PostgreSQL Source Code  git master
libpq-fe.h File Reference
#include <stdio.h>
#include "postgres_ext.h"
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Data Structures

struct  pgNotify
 
struct  _PQprintOpt
 
struct  _PQconninfoOption
 
struct  PQArgBlock
 
struct  pgresAttDesc
 

Macros

#define PG_COPYRES_ATTRS   0x01
 
#define PG_COPYRES_TUPLES   0x02 /* Implies PG_COPYRES_ATTRS */
 
#define PG_COPYRES_EVENTS   0x04
 
#define PG_COPYRES_NOTICEHOOKS   0x08
 
#define PQsetdb(M_PGHOST, M_PGPORT, M_PGOPT, M_PGTTY, M_DBNAME)   PQsetdbLogin(M_PGHOST, M_PGPORT, M_PGOPT, M_PGTTY, M_DBNAME, NULL, NULL)
 
#define PQfreeNotify(ptr)   PQfreemem(ptr)
 
#define PQnoPasswordSupplied   "fe_sendauth: no password supplied\n"
 

Typedefs

typedef struct pg_conn PGconn
 
typedef struct pg_result PGresult
 
typedef struct pg_cancel PGcancel
 
typedef struct pgNotify PGnotify
 
typedef void(* PQnoticeReceiver) (void *arg, const PGresult *res)
 
typedef void(* PQnoticeProcessor) (void *arg, const char *message)
 
typedef char pqbool
 
typedef struct _PQprintOpt PQprintOpt
 
typedef struct _PQconninfoOption PQconninfoOption
 
typedef struct pgresAttDesc PGresAttDesc
 
typedef void(* pgthreadlock_t) (int acquire)
 

Enumerations

enum  ConnStatusType {
  CONNECTION_OK, CONNECTION_BAD, CONNECTION_STARTED, CONNECTION_MADE,
  CONNECTION_AWAITING_RESPONSE, CONNECTION_AUTH_OK, CONNECTION_SETENV, CONNECTION_SSL_STARTUP,
  CONNECTION_NEEDED, CONNECTION_CHECK_WRITABLE, CONNECTION_CONSUME
}
 
enum  PostgresPollingStatusType {
  PGRES_POLLING_FAILED = 0, PGRES_POLLING_READING, PGRES_POLLING_WRITING, PGRES_POLLING_OK,
  PGRES_POLLING_ACTIVE
}
 
enum  ExecStatusType {
  PGRES_EMPTY_QUERY = 0, PGRES_COMMAND_OK, PGRES_TUPLES_OK, PGRES_COPY_OUT,
  PGRES_COPY_IN, PGRES_BAD_RESPONSE, PGRES_NONFATAL_ERROR, PGRES_FATAL_ERROR,
  PGRES_COPY_BOTH, PGRES_SINGLE_TUPLE
}
 
enum  PGTransactionStatusType {
  PQTRANS_IDLE, PQTRANS_ACTIVE, PQTRANS_INTRANS, PQTRANS_INERROR,
  PQTRANS_UNKNOWN
}
 
enum  PGVerbosity { PQERRORS_TERSE, PQERRORS_DEFAULT, PQERRORS_VERBOSE }
 
enum  PGContextVisibility { PQSHOW_CONTEXT_NEVER, PQSHOW_CONTEXT_ERRORS, PQSHOW_CONTEXT_ALWAYS }
 
enum  PGPing { PQPING_OK, PQPING_REJECT, PQPING_NO_RESPONSE, PQPING_NO_ATTEMPT }
 

Functions

PGconnPQconnectStart (const char *conninfo)
 
PGconnPQconnectStartParams (const char *const *keywords, const char *const *values, int expand_dbname)
 
PostgresPollingStatusType PQconnectPoll (PGconn *conn)
 
PGconnPQconnectdb (const char *conninfo)
 
PGconnPQconnectdbParams (const char *const *keywords, const char *const *values, int expand_dbname)
 
PGconnPQsetdbLogin (const char *pghost, const char *pgport, const char *pgoptions, const char *pgtty, const char *dbName, const char *login, const char *pwd)
 
void PQfinish (PGconn *conn)
 
PQconninfoOptionPQconndefaults (void)
 
PQconninfoOptionPQconninfoParse (const char *conninfo, char **errmsg)
 
PQconninfoOptionPQconninfo (PGconn *conn)
 
void PQconninfoFree (PQconninfoOption *connOptions)
 
int PQresetStart (PGconn *conn)
 
PostgresPollingStatusType PQresetPoll (PGconn *conn)
 
void PQreset (PGconn *conn)
 
PGcancelPQgetCancel (PGconn *conn)
 
void PQfreeCancel (PGcancel *cancel)
 
int PQcancel (PGcancel *cancel, char *errbuf, int errbufsize)
 
int PQrequestCancel (PGconn *conn)
 
char * PQdb (const PGconn *conn)
 
char * PQuser (const PGconn *conn)
 
char * PQpass (const PGconn *conn)
 
char * PQhost (const PGconn *conn)
 
char * PQport (const PGconn *conn)
 
char * PQtty (const PGconn *conn)
 
char * PQoptions (const PGconn *conn)
 
ConnStatusType PQstatus (const PGconn *conn)
 
PGTransactionStatusType PQtransactionStatus (const PGconn *conn)
 
const char * PQparameterStatus (const PGconn *conn, const char *paramName)
 
int PQprotocolVersion (const PGconn *conn)
 
int PQserverVersion (const PGconn *conn)
 
char * PQerrorMessage (const PGconn *conn)
 
int PQsocket (const PGconn *conn)
 
int PQbackendPID (const PGconn *conn)
 
int PQconnectionNeedsPassword (const PGconn *conn)
 
int PQconnectionUsedPassword (const PGconn *conn)
 
int PQclientEncoding (const PGconn *conn)
 
int PQsetClientEncoding (PGconn *conn, const char *encoding)
 
int PQsslInUse (PGconn *conn)
 
void * PQsslStruct (PGconn *conn, const char *struct_name)
 
const char * PQsslAttribute (PGconn *conn, const char *attribute_name)
 
const char *const * PQsslAttributeNames (PGconn *conn)
 
void * PQgetssl (PGconn *conn)
 
void PQinitSSL (int do_init)
 
void PQinitOpenSSL (int do_ssl, int do_crypto)
 
PGVerbosity PQsetErrorVerbosity (PGconn *conn, PGVerbosity verbosity)
 
PGContextVisibility PQsetErrorContextVisibility (PGconn *conn, PGContextVisibility show_context)
 
void PQtrace (PGconn *conn, FILE *debug_port)
 
void PQuntrace (PGconn *conn)
 
PQnoticeReceiver PQsetNoticeReceiver (PGconn *conn, PQnoticeReceiver proc, void *arg)
 
PQnoticeProcessor PQsetNoticeProcessor (PGconn *conn, PQnoticeProcessor proc, void *arg)
 
pgthreadlock_t PQregisterThreadLock (pgthreadlock_t newhandler)
 
PGresultPQexec (PGconn *conn, const char *query)
 
PGresultPQexecParams (PGconn *conn, const char *command, int nParams, const Oid *paramTypes, const char *const *paramValues, const int *paramLengths, const int *paramFormats, int resultFormat)
 
PGresultPQprepare (PGconn *conn, const char *stmtName, const char *query, int nParams, const Oid *paramTypes)
 
PGresultPQexecPrepared (PGconn *conn, const char *stmtName, int nParams, const char *const *paramValues, const int *paramLengths, const int *paramFormats, int resultFormat)
 
int PQsendQuery (PGconn *conn, const char *query)
 
int PQsendQueryParams (PGconn *conn, const char *command, int nParams, const Oid *paramTypes, const char *const *paramValues, const int *paramLengths, const int *paramFormats, int resultFormat)
 
int PQsendPrepare (PGconn *conn, const char *stmtName, const char *query, int nParams, const Oid *paramTypes)
 
int PQsendQueryPrepared (PGconn *conn, const char *stmtName, int nParams, const char *const *paramValues, const int *paramLengths, const int *paramFormats, int resultFormat)
 
int PQsetSingleRowMode (PGconn *conn)
 
PGresultPQgetResult (PGconn *conn)
 
int PQisBusy (PGconn *conn)
 
int PQconsumeInput (PGconn *conn)
 
PGnotifyPQnotifies (PGconn *conn)
 
int PQputCopyData (PGconn *conn, const char *buffer, int nbytes)
 
int PQputCopyEnd (PGconn *conn, const char *errormsg)
 
int PQgetCopyData (PGconn *conn, char **buffer, int async)
 
int PQgetline (PGconn *conn, char *string, int length)
 
int PQputline (PGconn *conn, const char *string)
 
int PQgetlineAsync (PGconn *conn, char *buffer, int bufsize)
 
int PQputnbytes (PGconn *conn, const char *buffer, int nbytes)
 
int PQendcopy (PGconn *conn)
 
int PQsetnonblocking (PGconn *conn, int arg)
 
int PQisnonblocking (const PGconn *conn)
 
int PQisthreadsafe (void)
 
PGPing PQping (const char *conninfo)
 
PGPing PQpingParams (const char *const *keywords, const char *const *values, int expand_dbname)
 
int PQflush (PGconn *conn)
 
PGresultPQfn (PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
 
ExecStatusType PQresultStatus (const PGresult *res)
 
char * PQresStatus (ExecStatusType status)
 
char * PQresultErrorMessage (const PGresult *res)
 
char * PQresultVerboseErrorMessage (const PGresult *res, PGVerbosity verbosity, PGContextVisibility show_context)
 
char * PQresultErrorField (const PGresult *res, int fieldcode)
 
int PQntuples (const PGresult *res)
 
int PQnfields (const PGresult *res)
 
int PQbinaryTuples (const PGresult *res)
 
char * PQfname (const PGresult *res, int field_num)
 
int PQfnumber (const PGresult *res, const char *field_name)
 
Oid PQftable (const PGresult *res, int field_num)
 
int PQftablecol (const PGresult *res, int field_num)
 
int PQfformat (const PGresult *res, int field_num)
 
Oid PQftype (const PGresult *res, int field_num)
 
int PQfsize (const PGresult *res, int field_num)
 
int PQfmod (const PGresult *res, int field_num)
 
char * PQcmdStatus (PGresult *res)
 
char * PQoidStatus (const PGresult *res)
 
Oid PQoidValue (const PGresult *res)
 
char * PQcmdTuples (PGresult *res)
 
char * PQgetvalue (const PGresult *res, int tup_num, int field_num)
 
int PQgetlength (const PGresult *res, int tup_num, int field_num)
 
int PQgetisnull (const PGresult *res, int tup_num, int field_num)
 
int PQnparams (const PGresult *res)
 
Oid PQparamtype (const PGresult *res, int param_num)
 
PGresultPQdescribePrepared (PGconn *conn, const char *stmt)
 
PGresultPQdescribePortal (PGconn *conn, const char *portal)
 
int PQsendDescribePrepared (PGconn *conn, const char *stmt)
 
int PQsendDescribePortal (PGconn *conn, const char *portal)
 
void PQclear (PGresult *res)
 
void PQfreemem (void *ptr)
 
PGresultPQmakeEmptyPGresult (PGconn *conn, ExecStatusType status)
 
PGresultPQcopyResult (const PGresult *src, int flags)
 
int PQsetResultAttrs (PGresult *res, int numAttributes, PGresAttDesc *attDescs)
 
void * PQresultAlloc (PGresult *res, size_t nBytes)
 
int PQsetvalue (PGresult *res, int tup_num, int field_num, char *value, int len)
 
size_t PQescapeStringConn (PGconn *conn, char *to, const char *from, size_t length, int *error)
 
char * PQescapeLiteral (PGconn *conn, const char *str, size_t len)
 
char * PQescapeIdentifier (PGconn *conn, const char *str, size_t len)
 
unsigned char * PQescapeByteaConn (PGconn *conn, const unsigned char *from, size_t from_length, size_t *to_length)
 
unsigned char * PQunescapeBytea (const unsigned char *strtext, size_t *retbuflen)
 
size_t PQescapeString (char *to, const char *from, size_t length)
 
unsigned char * PQescapeBytea (const unsigned char *from, size_t from_length, size_t *to_length)
 
void PQprint (FILE *fout, const PGresult *res, const PQprintOpt *ps)
 
void PQdisplayTuples (const PGresult *res, FILE *fp, int fillAlign, const char *fieldSep, int printHeader, int quiet)
 
void PQprintTuples (const PGresult *res, FILE *fout, int printAttName, int terseOutput, int width)
 
int lo_open (PGconn *conn, Oid lobjId, int mode)
 
int lo_close (PGconn *conn, int fd)
 
int lo_read (PGconn *conn, int fd, char *buf, size_t len)
 
int lo_write (PGconn *conn, int fd, const char *buf, size_t len)
 
int lo_lseek (PGconn *conn, int fd, int offset, int whence)
 
pg_int64 lo_lseek64 (PGconn *conn, int fd, pg_int64 offset, int whence)
 
Oid lo_creat (PGconn *conn, int mode)
 
Oid lo_create (PGconn *conn, Oid lobjId)
 
int lo_tell (PGconn *conn, int fd)
 
pg_int64 lo_tell64 (PGconn *conn, int fd)
 
int lo_truncate (PGconn *conn, int fd, size_t len)
 
int lo_truncate64 (PGconn *conn, int fd, pg_int64 len)
 
int lo_unlink (PGconn *conn, Oid lobjId)
 
Oid lo_import (PGconn *conn, const char *filename)
 
Oid lo_import_with_oid (PGconn *conn, const char *filename, Oid lobjId)
 
int lo_export (PGconn *conn, Oid lobjId, const char *filename)
 
int PQlibVersion (void)
 
int PQmblen (const char *s, int encoding)
 
int PQdsplen (const char *s, int encoding)
 
int PQenv2encoding (void)
 
char * PQencryptPassword (const char *passwd, const char *user)
 
char * PQencryptPasswordConn (PGconn *conn, const char *passwd, const char *user, const char *algorithm)
 
int pg_char_to_encoding (const char *name)
 
const char * pg_encoding_to_char (int encoding)
 
int pg_valid_server_encoding_id (int encoding)
 

Macro Definition Documentation

◆ PG_COPYRES_ATTRS

#define PG_COPYRES_ATTRS   0x01

Definition at line 34 of file libpq-fe.h.

Referenced by PQcopyResult(), and pqRowProcessor().

◆ PG_COPYRES_EVENTS

#define PG_COPYRES_EVENTS   0x04

Definition at line 36 of file libpq-fe.h.

Referenced by PQcopyResult(), and pqRowProcessor().

◆ PG_COPYRES_NOTICEHOOKS

#define PG_COPYRES_NOTICEHOOKS   0x08

Definition at line 37 of file libpq-fe.h.

Referenced by PQcopyResult(), and pqRowProcessor().

◆ PG_COPYRES_TUPLES

#define PG_COPYRES_TUPLES   0x02 /* Implies PG_COPYRES_ATTRS */

Definition at line 35 of file libpq-fe.h.

Referenced by PQcopyResult().

◆ PQfreeNotify

#define PQfreeNotify (   ptr)    PQfreemem(ptr)

Definition at line 508 of file libpq-fe.h.

◆ PQnoPasswordSupplied

#define PQnoPasswordSupplied   "fe_sendauth: no password supplied\n"

Definition at line 512 of file libpq-fe.h.

Referenced by pg_fe_sendauth(), and pg_SASL_init().

◆ PQsetdb

#define PQsetdb (   M_PGHOST,
  M_PGPORT,
  M_PGOPT,
  M_PGTTY,
  M_DBNAME 
)    PQsetdbLogin(M_PGHOST, M_PGPORT, M_PGOPT, M_PGTTY, M_DBNAME, NULL, NULL)

Definition at line 269 of file libpq-fe.h.

Referenced by main().

Typedef Documentation

◆ PGcancel

Definition at line 153 of file libpq-fe.h.

◆ PGconn

Definition at line 140 of file libpq-fe.h.

◆ PGnotify

◆ PGresAttDesc

◆ PGresult

Definition at line 147 of file libpq-fe.h.

◆ pgthreadlock_t

typedef void(* pgthreadlock_t) (int acquire)

Definition at line 374 of file libpq-fe.h.

◆ pqbool

Definition at line 175 of file libpq-fe.h.

◆ PQconninfoOption

◆ PQnoticeProcessor

typedef void(* PQnoticeProcessor) (void *arg, const char *message)

Definition at line 172 of file libpq-fe.h.

◆ PQnoticeReceiver

typedef void(* PQnoticeReceiver) (void *arg, const PGresult *res)

Definition at line 171 of file libpq-fe.h.

◆ PQprintOpt

Enumeration Type Documentation

◆ ConnStatusType

Enumerator
CONNECTION_OK 
CONNECTION_BAD 
CONNECTION_STARTED 
CONNECTION_MADE 
CONNECTION_AWAITING_RESPONSE 
CONNECTION_AUTH_OK 
CONNECTION_SETENV 
CONNECTION_SSL_STARTUP 
CONNECTION_NEEDED 
CONNECTION_CHECK_WRITABLE 
CONNECTION_CONSUME 

Definition at line 47 of file libpq-fe.h.

48 {
51  /* Non-blocking mode only below here */
52 
53  /*
54  * The existence of these should never be relied upon - they should only
55  * be used for user feedback or similar purposes.
56  */
57  CONNECTION_STARTED, /* Waiting for connection to be made. */
58  CONNECTION_MADE, /* Connection OK; waiting to send. */
59  CONNECTION_AWAITING_RESPONSE, /* Waiting for a response from the
60  * postmaster. */
61  CONNECTION_AUTH_OK, /* Received authentication; waiting for
62  * backend startup. */
63  CONNECTION_SETENV, /* Negotiating environment. */
64  CONNECTION_SSL_STARTUP, /* Negotiating SSL. */
65  CONNECTION_NEEDED, /* Internal state: connect() needed */
66  CONNECTION_CHECK_WRITABLE, /* Check if we could make a writable
67  * connection. */
68  CONNECTION_CONSUME /* Wait for any pending message and consume
69  * them. */
ConnStatusType
Definition: libpq-fe.h:47

◆ ExecStatusType

Enumerator
PGRES_EMPTY_QUERY 
PGRES_COMMAND_OK 
PGRES_TUPLES_OK 
PGRES_COPY_OUT 
PGRES_COPY_IN 
PGRES_BAD_RESPONSE 
PGRES_NONFATAL_ERROR 
PGRES_FATAL_ERROR 
PGRES_COPY_BOTH 
PGRES_SINGLE_TUPLE 

Definition at line 82 of file libpq-fe.h.

83 {
84  PGRES_EMPTY_QUERY = 0, /* empty query string was executed */
85  PGRES_COMMAND_OK, /* a query command that doesn't return
86  * anything was executed properly by the
87  * backend */
88  PGRES_TUPLES_OK, /* a query command that returns tuples was
89  * executed properly by the backend, PGresult
90  * contains the result tuples */
91  PGRES_COPY_OUT, /* Copy Out data transfer in progress */
92  PGRES_COPY_IN, /* Copy In data transfer in progress */
93  PGRES_BAD_RESPONSE, /* an unexpected response was recv'd from the
94  * backend */
95  PGRES_NONFATAL_ERROR, /* notice or warning message */
96  PGRES_FATAL_ERROR, /* query failed */
97  PGRES_COPY_BOTH, /* Copy In/Out data transfer in progress */
98  PGRES_SINGLE_TUPLE /* single tuple from larger resultset */
ExecStatusType
Definition: libpq-fe.h:82

◆ PGContextVisibility

Enumerator
PQSHOW_CONTEXT_NEVER 
PQSHOW_CONTEXT_ERRORS 
PQSHOW_CONTEXT_ALWAYS 

Definition at line 117 of file libpq-fe.h.

118 {
119  PQSHOW_CONTEXT_NEVER, /* never show CONTEXT field */
120  PQSHOW_CONTEXT_ERRORS, /* show CONTEXT for errors only (default) */
121  PQSHOW_CONTEXT_ALWAYS /* always show CONTEXT field */
PGContextVisibility
Definition: libpq-fe.h:117

◆ PGPing

enum PGPing
Enumerator
PQPING_OK 
PQPING_REJECT 
PQPING_NO_RESPONSE 
PQPING_NO_ATTEMPT 

Definition at line 129 of file libpq-fe.h.

130 {
131  PQPING_OK, /* server is accepting connections */
132  PQPING_REJECT, /* server is alive but rejecting connections */
133  PQPING_NO_RESPONSE, /* could not establish connection */
134  PQPING_NO_ATTEMPT /* connection not attempted (bad params) */
135 } PGPing;
PGPing
Definition: libpq-fe.h:129

◆ PGTransactionStatusType

Enumerator
PQTRANS_IDLE 
PQTRANS_ACTIVE 
PQTRANS_INTRANS 
PQTRANS_INERROR 
PQTRANS_UNKNOWN 

Definition at line 101 of file libpq-fe.h.

102 {
103  PQTRANS_IDLE, /* connection idle */
104  PQTRANS_ACTIVE, /* command in progress */
105  PQTRANS_INTRANS, /* idle, within transaction block */
106  PQTRANS_INERROR, /* idle, within failed transaction */
107  PQTRANS_UNKNOWN /* cannot determine status */
PGTransactionStatusType
Definition: libpq-fe.h:101

◆ PGVerbosity

Enumerator
PQERRORS_TERSE 
PQERRORS_DEFAULT 
PQERRORS_VERBOSE 

Definition at line 110 of file libpq-fe.h.

111 {
112  PQERRORS_TERSE, /* single-line error messages */
113  PQERRORS_DEFAULT, /* recommended style */
114  PQERRORS_VERBOSE /* all the facts, ma'am */
115 } PGVerbosity;
PGVerbosity
Definition: libpq-fe.h:110

◆ PostgresPollingStatusType

Enumerator
PGRES_POLLING_FAILED 
PGRES_POLLING_READING 
PGRES_POLLING_WRITING 
PGRES_POLLING_OK 
PGRES_POLLING_ACTIVE 

Definition at line 72 of file libpq-fe.h.

73 {
75  PGRES_POLLING_READING, /* These two indicate that one may */
76  PGRES_POLLING_WRITING, /* use select before polling again. */
78  PGRES_POLLING_ACTIVE /* unused; keep for awhile for backwards
79  * compatibility */
PostgresPollingStatusType
Definition: libpq-fe.h:72

Function Documentation

◆ lo_close()

int lo_close ( PGconn conn,
int  fd 
)

Definition at line 99 of file fe-lobj.c.

References fd(), pgLobjfuncs::fn_lo_close, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), and PQArgBlock::u.

Referenced by dumpBlobs(), EndRestoreBlob(), exportFile(), importFile(), lo_export(), lo_import_internal(), my_truncate(), overwrite(), and pickout().

100 {
101  PQArgBlock argv[1];
102  PGresult *res;
103  int retval;
104  int result_len;
105 
106  if (conn == NULL || conn->lobjfuncs == NULL)
107  {
108  if (lo_initialize(conn) < 0)
109  return -1;
110  }
111 
112  argv[0].isint = 1;
113  argv[0].len = 4;
114  argv[0].u.integer = fd;
115  res = PQfn(conn, conn->lobjfuncs->fn_lo_close,
116  &retval, &result_len, 1, argv, 1);
117  if (PQresultStatus(res) == PGRES_COMMAND_OK)
118  {
119  PQclear(res);
120  return retval;
121  }
122  else
123  {
124  PQclear(res);
125  return -1;
126  }
127 }
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
union PQArgBlock::@149 u
void PQclear(PGresult *res)
Definition: fe-exec.c:671
Oid fn_lo_close
Definition: libpq-int.h:268
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_creat()

Oid lo_creat ( PGconn conn,
int  mode 
)

Definition at line 465 of file fe-lobj.c.

References pgLobjfuncs::fn_lo_creat, PQArgBlock::integer, InvalidOid, PQArgBlock::isint, PQArgBlock::len, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), and PQArgBlock::u.

Referenced by importFile(), and lo_import_internal().

466 {
467  PQArgBlock argv[1];
468  PGresult *res;
469  int retval;
470  int result_len;
471 
472  if (conn == NULL || conn->lobjfuncs == NULL)
473  {
474  if (lo_initialize(conn) < 0)
475  return InvalidOid;
476  }
477 
478  argv[0].isint = 1;
479  argv[0].len = 4;
480  argv[0].u.integer = mode;
481  res = PQfn(conn, conn->lobjfuncs->fn_lo_creat,
482  &retval, &result_len, 1, argv, 1);
483  if (PQresultStatus(res) == PGRES_COMMAND_OK)
484  {
485  PQclear(res);
486  return (Oid) retval;
487  }
488  else
489  {
490  PQclear(res);
491  return InvalidOid;
492  }
493 }
unsigned int Oid
Definition: postgres_ext.h:31
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
union PQArgBlock::@149 u
#define InvalidOid
Definition: postgres_ext.h:36
void PQclear(PGresult *res)
Definition: fe-exec.c:671
Oid fn_lo_creat
Definition: libpq-int.h:269
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_create()

Oid lo_create ( PGconn conn,
Oid  lobjId 
)

Definition at line 504 of file fe-lobj.c.

References pg_conn::errorMessage, pgLobjfuncs::fn_lo_create, PQArgBlock::integer, InvalidOid, PQArgBlock::isint, PQArgBlock::len, libpq_gettext, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), printfPQExpBuffer(), and PQArgBlock::u.

Referenced by lo_import_internal(), and StartRestoreBlob().

505 {
506  PQArgBlock argv[1];
507  PGresult *res;
508  int retval;
509  int result_len;
510 
511  if (conn == NULL || conn->lobjfuncs == NULL)
512  {
513  if (lo_initialize(conn) < 0)
514  return InvalidOid;
515  }
516 
517  /* Must check this on-the-fly because it's not there pre-8.1 */
518  if (conn->lobjfuncs->fn_lo_create == 0)
519  {
521  libpq_gettext("cannot determine OID of function lo_create\n"));
522  return InvalidOid;
523  }
524 
525  argv[0].isint = 1;
526  argv[0].len = 4;
527  argv[0].u.integer = lobjId;
528  res = PQfn(conn, conn->lobjfuncs->fn_lo_create,
529  &retval, &result_len, 1, argv, 1);
530  if (PQresultStatus(res) == PGRES_COMMAND_OK)
531  {
532  PQclear(res);
533  return (Oid) retval;
534  }
535  else
536  {
537  PQclear(res);
538  return InvalidOid;
539  }
540 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
Oid fn_lo_create
Definition: libpq-int.h:270
unsigned int Oid
Definition: postgres_ext.h:31
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
union PQArgBlock::@149 u
PQExpBufferData errorMessage
Definition: libpq-int.h:494
#define InvalidOid
Definition: postgres_ext.h:36
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
#define libpq_gettext(x)
Definition: libpq-int.h:760
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_export()

int lo_export ( PGconn conn,
Oid  lobjId,
const char *  filename 
)

Definition at line 784 of file fe-lobj.c.

References buf, close, pg_conn::errorMessage, fd(), INV_READ, libpq_gettext, LO_BUFSIZE, lo_close(), lo_open(), lo_read(), PG_BINARY, pqStrerror(), printfPQExpBuffer(), and write.

Referenced by do_lo_export(), and main().

785 {
786  int result = 1;
787  int fd;
788  int nbytes,
789  tmp;
790  char buf[LO_BUFSIZE];
791  int lobj;
792  char sebuf[256];
793 
794  /*
795  * open the large object.
796  */
797  lobj = lo_open(conn, lobjId, INV_READ);
798  if (lobj == -1)
799  {
800  /* we assume lo_open() already set a suitable error message */
801  return -1;
802  }
803 
804  /*
805  * create the file to be written to
806  */
807  fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC | PG_BINARY, 0666);
808  if (fd < 0)
809  {
810  /* We must do lo_close before setting the errorMessage */
811  int save_errno = errno;
812 
813  (void) lo_close(conn, lobj);
815  libpq_gettext("could not open file \"%s\": %s\n"),
816  filename,
817  pqStrerror(save_errno, sebuf, sizeof(sebuf)));
818  return -1;
819  }
820 
821  /*
822  * read in from the large object and write to the file
823  */
824  while ((nbytes = lo_read(conn, lobj, buf, LO_BUFSIZE)) > 0)
825  {
826  tmp = write(fd, buf, nbytes);
827  if (tmp != nbytes)
828  {
829  /* We must do lo_close before setting the errorMessage */
830  int save_errno = errno;
831 
832  (void) lo_close(conn, lobj);
833  (void) close(fd);
835  libpq_gettext("could not write to file \"%s\": %s\n"),
836  filename,
837  pqStrerror(save_errno, sebuf, sizeof(sebuf)));
838  return -1;
839  }
840  }
841 
842  /*
843  * If lo_read() failed, we are now in an aborted transaction so there's no
844  * need for lo_close(); furthermore, if we tried it we'd overwrite the
845  * useful error result with a useless one. So skip lo_close() if we got a
846  * failure result.
847  */
848  if (nbytes < 0 ||
849  lo_close(conn, lobj) != 0)
850  {
851  /* assume lo_read() or lo_close() left a suitable error message */
852  result = -1;
853  }
854 
855  /* if we already failed, don't overwrite that msg with a close error */
856  if (close(fd) && result >= 0)
857  {
859  libpq_gettext("could not write to file \"%s\": %s\n"),
860  filename, pqStrerror(errno, sebuf, sizeof(sebuf)));
861  result = -1;
862  }
863 
864  return result;
865 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
#define write(a, b, c)
Definition: win32.h:14
char * pqStrerror(int errnum, char *strerrbuf, size_t buflen)
Definition: thread.c:61
static int fd(const char *x, int i)
Definition: preproc-init.c:105
#define PG_BINARY
Definition: c.h:1080
#define INV_READ
Definition: libpq-fs.h:22
int lo_close(PGconn *conn, int fd)
Definition: fe-lobj.c:99
static char * buf
Definition: pg_test_fsync.c:67
int lo_open(PGconn *conn, Oid lobjId, int mode)
Definition: fe-lobj.c:57
PQExpBufferData errorMessage
Definition: libpq-int.h:494
#define LO_BUFSIZE
Definition: fe-lobj.c:42
static char * filename
Definition: pg_dumpall.c:87
int lo_read(PGconn *conn, int fd, char *buf, size_t len)
Definition: fe-lobj.c:258
#define close(a)
Definition: win32.h:12
#define libpq_gettext(x)
Definition: libpq-int.h:760

◆ lo_import()

Oid lo_import ( PGconn conn,
const char *  filename 
)

Definition at line 668 of file fe-lobj.c.

References InvalidOid, and lo_import_internal().

Referenced by do_lo_import(), and main().

669 {
670  return lo_import_internal(conn, filename, InvalidOid);
671 }
static Oid lo_import_internal(PGconn *conn, const char *filename, Oid oid)
Definition: fe-lobj.c:689
#define InvalidOid
Definition: postgres_ext.h:36
static char * filename
Definition: pg_dumpall.c:87

◆ lo_import_with_oid()

Oid lo_import_with_oid ( PGconn conn,
const char *  filename,
Oid  lobjId 
)

Definition at line 683 of file fe-lobj.c.

References lo_import_internal().

684 {
685  return lo_import_internal(conn, filename, lobjId);
686 }
static Oid lo_import_internal(PGconn *conn, const char *filename, Oid oid)
Definition: fe-lobj.c:689
static char * filename
Definition: pg_dumpall.c:87

◆ lo_lseek()

int lo_lseek ( PGconn conn,
int  fd,
int  offset,
int  whence 
)

Definition at line 365 of file fe-lobj.c.

References fd(), pgLobjfuncs::fn_lo_lseek, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), and PQArgBlock::u.

Referenced by overwrite(), and pickout().

366 {
367  PQArgBlock argv[3];
368  PGresult *res;
369  int retval;
370  int result_len;
371 
372  if (conn == NULL || conn->lobjfuncs == NULL)
373  {
374  if (lo_initialize(conn) < 0)
375  return -1;
376  }
377 
378  argv[0].isint = 1;
379  argv[0].len = 4;
380  argv[0].u.integer = fd;
381 
382  argv[1].isint = 1;
383  argv[1].len = 4;
384  argv[1].u.integer = offset;
385 
386  argv[2].isint = 1;
387  argv[2].len = 4;
388  argv[2].u.integer = whence;
389 
390  res = PQfn(conn, conn->lobjfuncs->fn_lo_lseek,
391  &retval, &result_len, 1, argv, 3);
392  if (PQresultStatus(res) == PGRES_COMMAND_OK)
393  {
394  PQclear(res);
395  return retval;
396  }
397  else
398  {
399  PQclear(res);
400  return -1;
401  }
402 }
Oid fn_lo_lseek
Definition: libpq-int.h:272
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
union PQArgBlock::@149 u
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_lseek64()

pg_int64 lo_lseek64 ( PGconn conn,
int  fd,
pg_int64  offset,
int  whence 
)

Definition at line 409 of file fe-lobj.c.

References pg_conn::errorMessage, fd(), pgLobjfuncs::fn_lo_lseek64, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, libpq_gettext, lo_hton64(), lo_initialize(), lo_ntoh64(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), printfPQExpBuffer(), PQArgBlock::ptr, and PQArgBlock::u.

Referenced by overwrite(), and pickout().

410 {
411  PQArgBlock argv[3];
412  PGresult *res;
413  pg_int64 retval;
414  int result_len;
415 
416  if (conn == NULL || conn->lobjfuncs == NULL)
417  {
418  if (lo_initialize(conn) < 0)
419  return -1;
420  }
421 
422  if (conn->lobjfuncs->fn_lo_lseek64 == 0)
423  {
425  libpq_gettext("cannot determine OID of function lo_lseek64\n"));
426  return -1;
427  }
428 
429  argv[0].isint = 1;
430  argv[0].len = 4;
431  argv[0].u.integer = fd;
432 
433  offset = lo_hton64(offset);
434  argv[1].isint = 0;
435  argv[1].len = 8;
436  argv[1].u.ptr = (int *) &offset;
437 
438  argv[2].isint = 1;
439  argv[2].len = 4;
440  argv[2].u.integer = whence;
441 
442  res = PQfn(conn, conn->lobjfuncs->fn_lo_lseek64,
443  (void *) &retval, &result_len, 0, argv, 3);
444  if (PQresultStatus(res) == PGRES_COMMAND_OK && result_len == 8)
445  {
446  PQclear(res);
447  return lo_ntoh64(retval);
448  }
449  else
450  {
451  PQclear(res);
452  return -1;
453  }
454 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
PG_INT64_TYPE pg_int64
Definition: postgres_ext.h:47
union PQArgBlock::@149 u
static pg_int64 lo_hton64(pg_int64 host64)
Definition: fe-lobj.c:1061
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
Oid fn_lo_lseek64
Definition: libpq-int.h:273
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int * ptr
Definition: libpq-fe.h:226
#define libpq_gettext(x)
Definition: libpq-int.h:760
int integer
Definition: libpq-fe.h:227
static pg_int64 lo_ntoh64(pg_int64 net64)
Definition: fe-lobj.c:1086
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_open()

int lo_open ( PGconn conn,
Oid  lobjId,
int  mode 
)

Definition at line 57 of file fe-lobj.c.

References fd(), pgLobjfuncs::fn_lo_open, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), and PQArgBlock::u.

Referenced by dumpBlobs(), exportFile(), importFile(), lo_export(), lo_import_internal(), my_truncate(), overwrite(), pickout(), and StartRestoreBlob().

58 {
59  int fd;
60  int result_len;
61  PQArgBlock argv[2];
62  PGresult *res;
63 
64  if (conn == NULL || conn->lobjfuncs == NULL)
65  {
66  if (lo_initialize(conn) < 0)
67  return -1;
68  }
69 
70  argv[0].isint = 1;
71  argv[0].len = 4;
72  argv[0].u.integer = lobjId;
73 
74  argv[1].isint = 1;
75  argv[1].len = 4;
76  argv[1].u.integer = mode;
77 
78  res = PQfn(conn, conn->lobjfuncs->fn_lo_open, &fd, &result_len, 1, argv, 2);
79  if (PQresultStatus(res) == PGRES_COMMAND_OK)
80  {
81  PQclear(res);
82  return fd;
83  }
84  else
85  {
86  PQclear(res);
87  return -1;
88  }
89 }
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
Oid fn_lo_open
Definition: libpq-int.h:267
union PQArgBlock::@149 u
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_read()

int lo_read ( PGconn conn,
int  fd,
char *  buf,
size_t  len 
)

Definition at line 258 of file fe-lobj.c.

References pg_conn::errorMessage, fd(), pgLobjfuncs::fn_lo_read, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, libpq_gettext, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), printfPQExpBuffer(), and PQArgBlock::u.

Referenced by lo_export().

259 {
260  PQArgBlock argv[2];
261  PGresult *res;
262  int result_len;
263 
264  if (conn == NULL || conn->lobjfuncs == NULL)
265  {
266  if (lo_initialize(conn) < 0)
267  return -1;
268  }
269 
270  /*
271  * Long ago, somebody thought it'd be a good idea to declare this function
272  * as taking size_t ... but the underlying backend function only accepts a
273  * signed int32 length. So throw error if the given value overflows
274  * int32.
275  */
276  if (len > (size_t) INT_MAX)
277  {
279  libpq_gettext("argument of lo_read exceeds integer range\n"));
280  return -1;
281  }
282 
283  argv[0].isint = 1;
284  argv[0].len = 4;
285  argv[0].u.integer = fd;
286 
287  argv[1].isint = 1;
288  argv[1].len = 4;
289  argv[1].u.integer = (int) len;
290 
291  res = PQfn(conn, conn->lobjfuncs->fn_lo_read,
292  (void *) buf, &result_len, 0, argv, 2);
293  if (PQresultStatus(res) == PGRES_COMMAND_OK)
294  {
295  PQclear(res);
296  return result_len;
297  }
298  else
299  {
300  PQclear(res);
301  return -1;
302  }
303 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
Oid fn_lo_read
Definition: libpq-int.h:278
static char * buf
Definition: pg_test_fsync.c:67
union PQArgBlock::@149 u
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
#define libpq_gettext(x)
Definition: libpq-int.h:760
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_tell()

int lo_tell ( PGconn conn,
int  fd 
)

Definition at line 548 of file fe-lobj.c.

References fd(), pgLobjfuncs::fn_lo_tell, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), and PQArgBlock::u.

549 {
550  int retval;
551  PQArgBlock argv[1];
552  PGresult *res;
553  int result_len;
554 
555  if (conn == NULL || conn->lobjfuncs == NULL)
556  {
557  if (lo_initialize(conn) < 0)
558  return -1;
559  }
560 
561  argv[0].isint = 1;
562  argv[0].len = 4;
563  argv[0].u.integer = fd;
564 
565  res = PQfn(conn, conn->lobjfuncs->fn_lo_tell,
566  &retval, &result_len, 1, argv, 1);
567  if (PQresultStatus(res) == PGRES_COMMAND_OK)
568  {
569  PQclear(res);
570  return retval;
571  }
572  else
573  {
574  PQclear(res);
575  return -1;
576  }
577 }
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
union PQArgBlock::@149 u
Oid fn_lo_tell
Definition: libpq-int.h:274
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_tell64()

pg_int64 lo_tell64 ( PGconn conn,
int  fd 
)

Definition at line 584 of file fe-lobj.c.

References pg_conn::errorMessage, fd(), pgLobjfuncs::fn_lo_tell64, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, libpq_gettext, lo_initialize(), lo_ntoh64(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), printfPQExpBuffer(), and PQArgBlock::u.

Referenced by pickout().

585 {
586  pg_int64 retval;
587  PQArgBlock argv[1];
588  PGresult *res;
589  int result_len;
590 
591  if (conn == NULL || conn->lobjfuncs == NULL)
592  {
593  if (lo_initialize(conn) < 0)
594  return -1;
595  }
596 
597  if (conn->lobjfuncs->fn_lo_tell64 == 0)
598  {
600  libpq_gettext("cannot determine OID of function lo_tell64\n"));
601  return -1;
602  }
603 
604  argv[0].isint = 1;
605  argv[0].len = 4;
606  argv[0].u.integer = fd;
607 
608  res = PQfn(conn, conn->lobjfuncs->fn_lo_tell64,
609  (void *) &retval, &result_len, 0, argv, 1);
610  if (PQresultStatus(res) == PGRES_COMMAND_OK && result_len == 8)
611  {
612  PQclear(res);
613  return lo_ntoh64(retval);
614  }
615  else
616  {
617  PQclear(res);
618  return -1;
619  }
620 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
PG_INT64_TYPE pg_int64
Definition: postgres_ext.h:47
union PQArgBlock::@149 u
Oid fn_lo_tell64
Definition: libpq-int.h:275
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
#define libpq_gettext(x)
Definition: libpq-int.h:760
int integer
Definition: libpq-fe.h:227
static pg_int64 lo_ntoh64(pg_int64 net64)
Definition: fe-lobj.c:1086
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_truncate()

int lo_truncate ( PGconn conn,
int  fd,
size_t  len 
)

Definition at line 137 of file fe-lobj.c.

References pg_conn::errorMessage, fd(), pgLobjfuncs::fn_lo_truncate, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, libpq_gettext, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), printfPQExpBuffer(), and PQArgBlock::u.

138 {
139  PQArgBlock argv[2];
140  PGresult *res;
141  int retval;
142  int result_len;
143 
144  if (conn == NULL || conn->lobjfuncs == NULL)
145  {
146  if (lo_initialize(conn) < 0)
147  return -1;
148  }
149 
150  /* Must check this on-the-fly because it's not there pre-8.3 */
151  if (conn->lobjfuncs->fn_lo_truncate == 0)
152  {
154  libpq_gettext("cannot determine OID of function lo_truncate\n"));
155  return -1;
156  }
157 
158  /*
159  * Long ago, somebody thought it'd be a good idea to declare this function
160  * as taking size_t ... but the underlying backend function only accepts a
161  * signed int32 length. So throw error if the given value overflows
162  * int32. (A possible alternative is to automatically redirect the call
163  * to lo_truncate64; but if the caller wanted to rely on that backend
164  * function being available, he could have called lo_truncate64 for
165  * himself.)
166  */
167  if (len > (size_t) INT_MAX)
168  {
170  libpq_gettext("argument of lo_truncate exceeds integer range\n"));
171  return -1;
172  }
173 
174  argv[0].isint = 1;
175  argv[0].len = 4;
176  argv[0].u.integer = fd;
177 
178  argv[1].isint = 1;
179  argv[1].len = 4;
180  argv[1].u.integer = (int) len;
181 
182  res = PQfn(conn, conn->lobjfuncs->fn_lo_truncate,
183  &retval, &result_len, 1, argv, 2);
184 
185  if (PQresultStatus(res) == PGRES_COMMAND_OK)
186  {
187  PQclear(res);
188  return retval;
189  }
190  else
191  {
192  PQclear(res);
193  return -1;
194  }
195 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
Oid fn_lo_truncate
Definition: libpq-int.h:276
union PQArgBlock::@149 u
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
#define libpq_gettext(x)
Definition: libpq-int.h:760
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_truncate64()

int lo_truncate64 ( PGconn conn,
int  fd,
pg_int64  len 
)

Definition at line 205 of file fe-lobj.c.

References pg_conn::errorMessage, fd(), pgLobjfuncs::fn_lo_truncate64, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, libpq_gettext, lo_hton64(), lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), printfPQExpBuffer(), PQArgBlock::ptr, and PQArgBlock::u.

Referenced by my_truncate().

206 {
207  PQArgBlock argv[2];
208  PGresult *res;
209  int retval;
210  int result_len;
211 
212  if (conn == NULL || conn->lobjfuncs == NULL)
213  {
214  if (lo_initialize(conn) < 0)
215  return -1;
216  }
217 
218  if (conn->lobjfuncs->fn_lo_truncate64 == 0)
219  {
221  libpq_gettext("cannot determine OID of function lo_truncate64\n"));
222  return -1;
223  }
224 
225  argv[0].isint = 1;
226  argv[0].len = 4;
227  argv[0].u.integer = fd;
228 
229  len = lo_hton64(len);
230  argv[1].isint = 0;
231  argv[1].len = 8;
232  argv[1].u.ptr = (int *) &len;
233 
234  res = PQfn(conn, conn->lobjfuncs->fn_lo_truncate64,
235  &retval, &result_len, 1, argv, 2);
236 
237  if (PQresultStatus(res) == PGRES_COMMAND_OK)
238  {
239  PQclear(res);
240  return retval;
241  }
242  else
243  {
244  PQclear(res);
245  return -1;
246  }
247 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
union PQArgBlock::@149 u
static pg_int64 lo_hton64(pg_int64 host64)
Definition: fe-lobj.c:1061
Oid fn_lo_truncate64
Definition: libpq-int.h:277
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int * ptr
Definition: libpq-fe.h:226
#define libpq_gettext(x)
Definition: libpq-int.h:760
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_unlink()

int lo_unlink ( PGconn conn,
Oid  lobjId 
)

Definition at line 628 of file fe-lobj.c.

References pgLobjfuncs::fn_lo_unlink, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), and PQArgBlock::u.

Referenced by do_lo_unlink(), and vacuumlo().

629 {
630  PQArgBlock argv[1];
631  PGresult *res;
632  int result_len;
633  int retval;
634 
635  if (conn == NULL || conn->lobjfuncs == NULL)
636  {
637  if (lo_initialize(conn) < 0)
638  return -1;
639  }
640 
641  argv[0].isint = 1;
642  argv[0].len = 4;
643  argv[0].u.integer = lobjId;
644 
645  res = PQfn(conn, conn->lobjfuncs->fn_lo_unlink,
646  &retval, &result_len, 1, argv, 1);
647  if (PQresultStatus(res) == PGRES_COMMAND_OK)
648  {
649  PQclear(res);
650  return retval;
651  }
652  else
653  {
654  PQclear(res);
655  return -1;
656  }
657 }
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
union PQArgBlock::@149 u
void PQclear(PGresult *res)
Definition: fe-exec.c:671
Oid fn_lo_unlink
Definition: libpq-int.h:271
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ lo_write()

int lo_write ( PGconn conn,
int  fd,
const char *  buf,
size_t  len 
)

Definition at line 312 of file fe-lobj.c.

References pg_conn::errorMessage, fd(), pgLobjfuncs::fn_lo_write, PQArgBlock::integer, PQArgBlock::isint, PQArgBlock::len, libpq_gettext, lo_initialize(), pg_conn::lobjfuncs, PGRES_COMMAND_OK, PQclear(), PQfn(), PQresultStatus(), printfPQExpBuffer(), PQArgBlock::ptr, and PQArgBlock::u.

Referenced by lo_import_internal().

313 {
314  PQArgBlock argv[2];
315  PGresult *res;
316  int result_len;
317  int retval;
318 
319  if (conn == NULL || conn->lobjfuncs == NULL)
320  {
321  if (lo_initialize(conn) < 0)
322  return -1;
323  }
324 
325  /*
326  * Long ago, somebody thought it'd be a good idea to declare this function
327  * as taking size_t ... but the underlying backend function only accepts a
328  * signed int32 length. So throw error if the given value overflows
329  * int32.
330  */
331  if (len > (size_t) INT_MAX)
332  {
334  libpq_gettext("argument of lo_write exceeds integer range\n"));
335  return -1;
336  }
337 
338  argv[0].isint = 1;
339  argv[0].len = 4;
340  argv[0].u.integer = fd;
341 
342  argv[1].isint = 0;
343  argv[1].len = (int) len;
344  argv[1].u.ptr = (int *) buf;
345 
346  res = PQfn(conn, conn->lobjfuncs->fn_lo_write,
347  &retval, &result_len, 1, argv, 2);
348  if (PQresultStatus(res) == PGRES_COMMAND_OK)
349  {
350  PQclear(res);
351  return retval;
352  }
353  else
354  {
355  PQclear(res);
356  return -1;
357  }
358 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
Oid fn_lo_write
Definition: libpq-int.h:279
PGresult * PQfn(PGconn *conn, int fnid, int *result_buf, int *result_len, int result_is_int, const PQArgBlock *args, int nargs)
Definition: fe-exec.c:2607
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
static char * buf
Definition: pg_test_fsync.c:67
union PQArgBlock::@149 u
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int isint
Definition: libpq-fe.h:223
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:427
int * ptr
Definition: libpq-fe.h:226
#define libpq_gettext(x)
Definition: libpq-int.h:760
int integer
Definition: libpq-fe.h:227
static int lo_initialize(PGconn *conn)
Definition: fe-lobj.c:876

◆ pg_char_to_encoding()

int pg_char_to_encoding ( const char *  name)

Definition at line 551 of file encnames.c.

References clean_encoding_name(), ereport, errcode(), errmsg(), ERROR, lengthof, NAMEDATALEN, and pg_encname_tbl.

Referenced by CreateConversionCommand(), length_in_encoding(), main(), PG_char_to_encoding(), pg_convert(), pg_get_utf8_id(), pg_valid_client_encoding(), pg_valid_server_encoding(), PQenv2encoding(), pqSaveParameterStatus(), ProcessCopyOptions(), processEncodingEntry(), and to_ascii_encname().

552 {
553  unsigned int nel = lengthof(pg_encname_tbl);
554  const pg_encname *base = pg_encname_tbl,
555  *last = base + nel - 1,
556  *position;
557  int result;
558  char buff[NAMEDATALEN],
559  *key;
560 
561  if (name == NULL || *name == '\0')
562  return -1;
563 
564  if (strlen(name) >= NAMEDATALEN)
565  {
566 #ifdef FRONTEND
567  fprintf(stderr, "encoding name too long\n");
568  return -1;
569 #else
570  ereport(ERROR,
571  (errcode(ERRCODE_NAME_TOO_LONG),
572  errmsg("encoding name too long")));
573 #endif
574  }
575  key = clean_encoding_name(name, buff);
576 
577  while (last >= base)
578  {
579  position = base + ((last - base) >> 1);
580  result = key[0] - position->name[0];
581 
582  if (result == 0)
583  {
584  result = strcmp(key, position->name);
585  if (result == 0)
586  return position->encoding;
587  }
588  if (result < 0)
589  last = position - 1;
590  else
591  base = position + 1;
592  }
593  return -1;
594 }
int errcode(int sqlerrcode)
Definition: elog.c:575
#define lengthof(array)
Definition: c.h:629
#define NAMEDATALEN
#define ERROR
Definition: elog.h:43
static const pg_encname pg_encname_tbl[]
Definition: encnames.c:38
#define ereport(elevel, rest)
Definition: elog.h:122
const char * name
Definition: encode.c:521
int errmsg(const char *fmt,...)
Definition: elog.c:797
static char * clean_encoding_name(const char *key, char *newkey)
Definition: encnames.c:525

◆ pg_encoding_to_char()

◆ pg_valid_server_encoding_id()

int pg_valid_server_encoding_id ( int  encoding)

Definition at line 515 of file encnames.c.

References PG_VALID_BE_ENCODING.

Referenced by setup_locale_encoding().

516 {
518 }
#define PG_VALID_BE_ENCODING(_enc)
Definition: pg_wchar.h:295
int32 encoding
Definition: pg_database.h:33

◆ PQbackendPID()

int PQbackendPID ( const PGconn conn)

Definition at line 6142 of file fe-connect.c.

References pg_conn::be_pid, CONNECTION_OK, and pg_conn::status.

Referenced by get_prompt(), and StartLogStreamer().

6143 {
6144  if (!conn || conn->status != CONNECTION_OK)
6145  return 0;
6146  return conn->be_pid;
6147 }
ConnStatusType status
Definition: libpq-int.h:380
int be_pid
Definition: libpq-int.h:420

◆ PQbinaryTuples()

int PQbinaryTuples ( const PGresult res)

Definition at line 2740 of file fe-exec.c.

References pg_result::binary.

Referenced by ProcessResult().

2741 {
2742  if (!res)
2743  return 0;
2744  return res->binary;
2745 }
int binary
Definition: libpq-int.h:179

◆ PQcancel()

int PQcancel ( PGcancel cancel,
char *  errbuf,
int  errbufsize 
)

Definition at line 3914 of file fe-connect.c.

References pg_cancel::be_key, pg_cancel::be_pid, internal_cancel(), pg_cancel::raddr, and strlcpy().

Referenced by dblink_cancel_query(), DisconnectDatabase(), handle_sigint(), pgfdw_cancel_query(), setup_cancel_handler(), ShutdownWorkersHard(), sigTermHandler(), and try_complete_step().

3915 {
3916  if (!cancel)
3917  {
3918  strlcpy(errbuf, "PQcancel() -- no cancel object supplied", errbufsize);
3919  return false;
3920  }
3921 
3922  return internal_cancel(&cancel->raddr, cancel->be_pid, cancel->be_key,
3923  errbuf, errbufsize);
3924 }
static int internal_cancel(SockAddr *raddr, int be_pid, int be_key, char *errbuf, int errbufsize)
Definition: fe-connect.c:3810
int be_pid
Definition: libpq-int.h:507
int be_key
Definition: libpq-int.h:508
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
SockAddr raddr
Definition: libpq-int.h:506

◆ PQclear()

void PQclear ( PGresult res)

Definition at line 671 of file fe-exec.c.

References pg_result::attDescs, pg_result::curBlock, pg_result::errFields, pg_result::events, free, i, PGEvent::name, pg_result::nEvents, pgresult_data::next, pg_result::paramDescs, PGEvent::passThrough, PGEVT_RESULTDESTROY, PGEvent::proc, PGEventResultDestroy::result, PGEvent::resultInitialized, and pg_result::tuples.

Referenced by _check_database_version(), _doSetSessionAuth(), _doSetWithOids(), _selectOutputSchema(), _selectTablespace(), add_tablespace_footer(), appendQualifiedRelation(), BaseBackup(), binary_upgrade_set_pg_class_oids(), binary_upgrade_set_type_oids_by_rel_oid(), binary_upgrade_set_type_oids_by_type_oid(), buildMatViewRefreshDependencies(), buildShSecLabels(), check_for_isn_and_int8_passing_mismatch(), check_for_jsonb_9_4_usage(), check_for_pg_role_prefix(), check_for_prepared_transactions(), check_for_reg_data_type_usage(), check_is_install_user(), check_loadable_libraries(), check_prepare_conn(), check_proper_datallowconn(), ClearOrSaveResult(), close_cursor(), cluster_all_databases(), connectDatabase(), ConnectDatabase(), connectToServer(), convertTSFunction(), create_cursor(), CreateReplicationSlot(), createViewAsClause(), dblink_close(), dblink_exec(), dblink_fetch(), dblink_open(), dblink_res_error(), deallocate_one(), describeAccessMethods(), describeAggregates(), describeFunctions(), describeOneTableDetails(), describeOneTSConfig(), describeOneTSParser(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTableDetails(), describeTablespaces(), describeTypes(), descriptor_free(), discard_response(), do_lo_import(), do_lo_list(), do_sql_command(), doCustom(), dropDBs(), DropReplicationSlot(), dropRoles(), dropTablespaces(), dumpAgg(), dumpBaseType(), dumpBlobs(), dumpCollation(), dumpCompositeType(), dumpCompositeTypeColComments(), dumpConversion(), dumpDatabase(), dumpDatabaseConfig(), dumpDatabases(), dumpDomain(), dumpEnumType(), dumpFunc(), dumpGroups(), dumpOpclass(), dumpOpfamily(), dumpOpr(), dumpRangeType(), dumpRoleMembership(), dumpRoles(), dumpRule(), dumpSearchPath(), dumpSequence(), dumpSequenceData(), dumpStatisticsExt(), dumpTable(), dumpTableData_copy(), dumpTableData_insert(), dumpTableSchema(), dumpTablespaces(), dumpTSConfig(), dumpTSDictionary(), dumpUserConfig(), dumpUserMappings(), ecpg_autostart_transaction(), ecpg_check_PQresult(), ecpg_is_type_an_array(), ecpg_process_output(), ECPGdescribe(), ECPGsetcommit(), ECPGtrans(), EndDBCopyMode(), exec_command_password(), ExecQueryUsingCursor(), executeCommand(), executeMaintenanceCommand(), executeQueryOrDie(), ExecuteSqlCommand(), ExecuteSqlStatement(), executeStatement(), expand_schema_name_patterns(), expand_table_name_patterns(), fail_lo_xact(), fetch_more_data(), findLastBuiltinOid_V71(), finish_foreign_modify(), finish_lo_xact(), get_create_object_cmd(), get_db_infos(), get_language_name(), get_loadable_libraries(), get_rel_infos(), get_remote_estimate(), get_returning_data(), get_synchronized_snapshot(), get_tablespace_paths(), getAccessMethods(), getAggregates(), getBlobs(), getCasts(), getCollations(), GetConnection(), getConstraints(), getConversions(), getCopyStart(), getDefaultACLs(), getDependencies(), getDomainConstraints(), getEventTriggers(), getExtendedStatistics(), getExtensionMembership(), getExtensions(), getForeignDataWrappers(), getForeignServers(), getFormattedTypeName(), getFuncs(), getIndexes(), getInherits(), getNamespaces(), getOpclasses(), getOperators(), getOpfamilies(), getParamDescriptions(), getPolicies(), getProcLangs(), getPublications(), getPublicationTables(), getRowDescriptions(), getRules(), getSubscriptions(), getTableAttrs(), getTables(), getTransforms(), getTriggers(), getTSConfigurations(), getTSDictionaries(), getTSParsers(), getTSTemplates(), getTypes(), handleCopyIn(), HandleEndOfCopyStream(), initGenerateData(), libpq_executeFileMap(), libpqConnect(), libpqGetFile(), libpqProcessFileList(), libpqrcv_create_slot(), libpqrcv_endstreaming(), libpqrcv_exec(), libpqrcv_identify_system(), libpqrcv_PQexec(), libpqrcv_readtimelinehistoryfile(), libpqrcv_receive(), libpqrcv_startstreaming(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDefaultACLs(), listDomains(), listEventTriggers(), listExtensionContents(), listExtensions(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listOneExtensionContents(), listPublications(), listSchemas(), listTables(), listTSConfigs(), listTSConfigsVerbose(), listTSDictionaries(), listTSParsers(), listTSParsersVerbose(), listTSTemplates(), listUserMappings(), lo_close(), lo_creat(), lo_create(), lo_initialize(), lo_lseek(), lo_lseek64(), lo_open(), lo_read(), lo_tell(), lo_tell64(), lo_truncate(), lo_truncate64(), lo_unlink(), lo_write(), lockTableForWorker(), lookup_object_oid(), main(), materializeQueryResult(), materializeResult(), new_9_0_populate_pg_largeobject_metadata(), objectDescription(), old_9_3_check_for_line_data_type_usage(), old_9_6_check_for_unknown_data_type_usage(), old_9_6_invalidate_hash_indexes(), permissionsList(), pg_attribute_noreturn(), pgfdw_cancel_query(), pgfdw_exec_cleanup_query(), pgfdw_get_cleanup_result(), pgfdw_get_result(), pgfdw_report_error(), pgfdw_xact_callback(), postgresAcquireSampleRowsFunc(), postgresAnalyzeForeignTable(), postgresEndDirectModify(), postgresExecForeignDelete(), postgresExecForeignInsert(), postgresExecForeignUpdate(), postgresImportForeignSchema(), postgresReScanForeignScan(), pqClearAsyncResult(), PQconnectPoll(), PQcopyResult(), PQencryptPasswordConn(), pqEndcopy2(), pqEndcopy3(), PQexecFinish(), PQexecStart(), pqGetErrorNotice2(), pqGetErrorNotice3(), pqInternalNotice(), PQmakeEmptyPGresult(), pqRowProcessor(), PQsetClientEncoding(), pqSetenvPoll(), prepare_common(), prepare_foreign_modify(), processExtensionTables(), ProcessQueryResult(), ProcessResult(), PSQLexecWatch(), receiveFileChunks(), ReceiveXlogStream(), ReconnectToServer(), reindex_all_databases(), RetrieveDataDirCreatePerm(), RetrieveWalSegSize(), run_permutation(), run_simple_query(), RunIdentifySystem(), sendCommand(), SendQuery(), set_frozenxids(), setup_connection(), sql_conn(), sql_exec(), start_lo_xact(), store_returning_result(), storeQueryResult(), StreamLogicalLog(), try_complete_step(), tryExecuteStatement(), vacuum_all_databases(), vacuum_one_database(), and vacuumlo().

672 {
673  PGresult_data *block;
674  int i;
675 
676  if (!res)
677  return;
678 
679  for (i = 0; i < res->nEvents; i++)
680  {
681  /* only send DESTROY to successfully-initialized event procs */
682  if (res->events[i].resultInitialized)
683  {
685 
686  evt.result = res;
687  (void) res->events[i].proc(PGEVT_RESULTDESTROY, &evt,
688  res->events[i].passThrough);
689  }
690  free(res->events[i].name);
691  }
692 
693  if (res->events)
694  free(res->events);
695 
696  /* Free all the subsidiary blocks */
697  while ((block = res->curBlock) != NULL)
698  {
699  res->curBlock = block->next;
700  free(block);
701  }
702 
703  /* Free the top-level tuple pointer array */
704  if (res->tuples)
705  free(res->tuples);
706 
707  /* zero out the pointer fields to catch programming errors */
708  res->attDescs = NULL;
709  res->tuples = NULL;
710  res->paramDescs = NULL;
711  res->errFields = NULL;
712  res->events = NULL;
713  res->nEvents = 0;
714  /* res->curBlock was zeroed out earlier */
715 
716  /* Free the PGresult structure itself */
717  free(res);
718 }
PGMessageField * errFields
Definition: libpq-int.h:197
bool resultInitialized
Definition: libpq-int.h:164
PGresult_data * next
Definition: libpq-int.h:105
int nEvents
Definition: libpq-int.h:188
PGresAttDesc * attDescs
Definition: libpq-int.h:171
PGresAttValue ** tuples
Definition: libpq-int.h:172
PGresult_data * curBlock
Definition: libpq-int.h:208
#define free(a)
Definition: header.h:65
PGresParamDesc * paramDescs
Definition: libpq-int.h:176
PGEventProc proc
Definition: libpq-int.h:160
int i
void * passThrough
Definition: libpq-int.h:162
PGEvent * events
Definition: libpq-int.h:187
char * name
Definition: libpq-int.h:161

◆ PQclientEncoding()

int PQclientEncoding ( const PGconn conn)

Definition at line 6176 of file fe-connect.c.

References pg_conn::client_encoding, CONNECTION_OK, and pg_conn::status.

Referenced by appendQualifiedRelation(), appendStringLiteralConn(), dblink_connect(), dblink_get_conn(), exec_command_encoding(), main(), processSQLNamePattern(), SendQuery(), setup_connection(), and SyncVariables().

6177 {
6178  if (!conn || conn->status != CONNECTION_OK)
6179  return -1;
6180  return conn->client_encoding;
6181 }
ConnStatusType status
Definition: libpq-int.h:380
int client_encoding
Definition: libpq-int.h:423

◆ PQcmdStatus()

char* PQcmdStatus ( PGresult res)

Definition at line 2995 of file fe-exec.c.

References pg_result::cmdStatus.

Referenced by dblink_exec(), ecpg_process_output(), materializeQueryResult(), materializeResult(), PrintQueryResults(), PrintQueryStatus(), PSQLexecWatch(), and SendQuery().

2996 {
2997  if (!res)
2998  return NULL;
2999  return res->cmdStatus;
3000 }
char cmdStatus[CMDSTATUS_LEN]
Definition: libpq-int.h:178

◆ PQcmdTuples()

char* PQcmdTuples ( PGresult res)

Definition at line 3065 of file fe-exec.c.

References pg_result::cmdStatus, pg_result::noticeHooks, and pqInternalNotice().

Referenced by ecpg_process_output(), execute_dml_stmt(), postgresExecForeignDelete(), postgresExecForeignInsert(), postgresExecForeignUpdate(), and SetResultVariables().

3066 {
3067  char *p,
3068  *c;
3069 
3070  if (!res)
3071  return "";
3072 
3073  if (strncmp(res->cmdStatus, "INSERT ", 7) == 0)
3074  {
3075  p = res->cmdStatus + 7;
3076  /* INSERT: skip oid and space */
3077  while (*p && *p != ' ')
3078  p++;
3079  if (*p == 0)
3080  goto interpret_error; /* no space? */
3081  p++;
3082  }
3083  else if (strncmp(res->cmdStatus, "SELECT ", 7) == 0 ||
3084  strncmp(res->cmdStatus, "DELETE ", 7) == 0 ||
3085  strncmp(res->cmdStatus, "UPDATE ", 7) == 0)
3086  p = res->cmdStatus + 7;
3087  else if (strncmp(res->cmdStatus, "FETCH ", 6) == 0)
3088  p = res->cmdStatus + 6;
3089  else if (strncmp(res->cmdStatus, "MOVE ", 5) == 0 ||
3090  strncmp(res->cmdStatus, "COPY ", 5) == 0)
3091  p = res->cmdStatus + 5;
3092  else
3093  return "";
3094 
3095  /* check that we have an integer (at least one digit, nothing else) */
3096  for (c = p; *c; c++)
3097  {
3098  if (!isdigit((unsigned char) *c))
3099  goto interpret_error;
3100  }
3101  if (c == p)
3102  goto interpret_error;
3103 
3104  return p;
3105 
3106 interpret_error:
3108  "could not interpret result from server: %s",
3109  res->cmdStatus);
3110  return "";
3111 }
PGNoticeHooks noticeHooks
Definition: libpq-int.h:186
char * c
void pqInternalNotice(const PGNoticeHooks *hooks, const char *fmt,...)
Definition: fe-exec.c:822
char cmdStatus[CMDSTATUS_LEN]
Definition: libpq-int.h:178

◆ PQconndefaults()

PQconninfoOption* PQconndefaults ( void  )

Definition at line 1230 of file fe-connect.c.

References conninfo_add_defaults(), conninfo_init(), initPQExpBuffer(), PQconninfoFree(), PQExpBufferDataBroken, and termPQExpBuffer().

Referenced by check_pghost_envvar(), dblink_fdw_validator(), get_connect_string(), InitPgFdwOptions(), and main().

1231 {
1232  PQExpBufferData errorBuf;
1233  PQconninfoOption *connOptions;
1234 
1235  /* We don't actually report any errors here, but callees want a buffer */
1236  initPQExpBuffer(&errorBuf);
1237  if (PQExpBufferDataBroken(errorBuf))
1238  return NULL; /* out of memory already :-( */
1239 
1240  connOptions = conninfo_init(&errorBuf);
1241  if (connOptions != NULL)
1242  {
1243  /* pass NULL errorBuf to ignore errors */
1244  if (!conninfo_add_defaults(connOptions, NULL))
1245  {
1246  PQconninfoFree(connOptions);
1247  connOptions = NULL;
1248  }
1249  }
1250 
1251  termPQExpBuffer(&errorBuf);
1252  return connOptions;
1253 }
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:128
static PQconninfoOption * conninfo_init(PQExpBuffer errorMessage)
Definition: fe-connect.c:4757
void PQconninfoFree(PQconninfoOption *connOptions)
Definition: fe-connect.c:5965
#define PQExpBufferDataBroken(buf)
Definition: pqexpbuffer.h:67
static bool conninfo_add_defaults(PQconninfoOption *options, PQExpBuffer errorMessage)
Definition: fe-connect.c:5193
void initPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:89

◆ PQconnectdb()

PGconn* PQconnectdb ( const char *  conninfo)

Definition at line 592 of file fe-connect.c.

References conn, connectDBComplete(), CONNECTION_BAD, PQconnectStart(), and pg_conn::status.

Referenced by dblink_connect(), dblink_get_conn(), get_db_conn(), libpqConnect(), and main().

593 {
594  PGconn *conn = PQconnectStart(conninfo);
595 
596  if (conn && conn->status != CONNECTION_BAD)
597  (void) connectDBComplete(conn);
598 
599  return conn;
600 }
PGconn * conn
Definition: streamutil.c:55
static int connectDBComplete(PGconn *conn)
Definition: fe-connect.c:1841
PGconn * PQconnectStart(const char *conninfo)
Definition: fe-connect.c:718
ConnStatusType status
Definition: libpq-int.h:380

◆ PQconnectdbParams()

PGconn* PQconnectdbParams ( const char *const *  keywords,
const char *const *  values,
int  expand_dbname 
)

Definition at line 536 of file fe-connect.c.

References conn, connectDBComplete(), CONNECTION_BAD, PQconnectStartParams(), and pg_conn::status.

Referenced by _connectDB(), connect_pg_server(), connectDatabase(), ConnectDatabase(), do_connect(), doConnect(), ECPGconnect(), GetConnection(), main(), sql_conn(), and vacuumlo().

539 {
540  PGconn *conn = PQconnectStartParams(keywords, values, expand_dbname);
541 
542  if (conn && conn->status != CONNECTION_BAD)
543  (void) connectDBComplete(conn);
544 
545  return conn;
546 
547 }
PGconn * conn
Definition: streamutil.c:55
static int connectDBComplete(PGconn *conn)
Definition: fe-connect.c:1841
ConnStatusType status
Definition: libpq-int.h:380
static Datum values[MAXATTR]
Definition: bootstrap.c:164
PGconn * PQconnectStartParams(const char *const *keywords, const char *const *values, int expand_dbname)
Definition: fe-connect.c:639

◆ PQconnectionNeedsPassword()

int PQconnectionNeedsPassword ( const PGconn conn)

Definition at line 6150 of file fe-connect.c.

References password, pg_conn::password_needed, and PQpass().

Referenced by _connectDB(), connectDatabase(), ConnectDatabase(), do_connect(), doConnect(), GetConnection(), main(), sql_conn(), and vacuumlo().

6151 {
6152  char *password;
6153 
6154  if (!conn)
6155  return false;
6156  password = PQpass(conn);
6157  if (conn->password_needed &&
6158  (password == NULL || password[0] == '\0'))
6159  return true;
6160  else
6161  return false;
6162 }
static char password[100]
Definition: streamutil.c:54
bool password_needed
Definition: libpq-int.h:408
char * PQpass(const PGconn *conn)
Definition: fe-connect.c:5999

◆ PQconnectionUsedPassword()

int PQconnectionUsedPassword ( const PGconn conn)

Definition at line 6165 of file fe-connect.c.

References pg_conn::password_needed.

Referenced by _connectDB(), connect_pg_server(), ConnectDatabase(), and dblink_security_check().

6166 {
6167  if (!conn)
6168  return false;
6169  if (conn->password_needed)
6170  return true;
6171  else
6172  return false;
6173 }
bool password_needed
Definition: libpq-int.h:408

◆ PQconnectPoll()

PostgresPollingStatusType PQconnectPoll ( PGconn conn)

Definition at line 2003 of file fe-connect.c.

References SockAddr::addr, pg_conn::addr_cur, pg_conn_host::addrlist, addrinfo::ai_addr, addrinfo::ai_addrlen, addrinfo::ai_family, addrinfo::ai_next, appendPQExpBuffer(), appendPQExpBufferChar(), appendPQExpBufferStr(), pg_conn::appname, pg_conn::asyncStatus, AUTH_REQ_MD5, AUTH_REQ_OK, pg_conn::auth_req_received, CHT_HOST_ADDRESS, connect, connectFailureMessage(), CONNECTION_AUTH_OK, CONNECTION_AWAITING_RESPONSE, CONNECTION_BAD, CONNECTION_CHECK_WRITABLE, CONNECTION_CONSUME, CONNECTION_MADE, CONNECTION_NEEDED, CONNECTION_OK, CONNECTION_SETENV, CONNECTION_SSL_STARTUP, CONNECTION_STARTED, connectNoDelay(), pg_conn::connhost, PQExpBufferData::data, EINPROGRESS, EINTR, EnvironmentOptions, ERRCODE_APPNAME_UNKNOWN, pg_conn::errorMessage, EWOULDBLOCK, pg_conn::fbappname, free, getpeereid(), pg_conn_host::host, pg_conn_host::hostaddr, pg_conn::inCursor, pg_conn::inEnd, pg_conn::inStart, IS_AF_UNIX, pg_conn::laddr, PQExpBufferData::len, libpq_gettext, pg_conn::nconnhost, NEGOTIATE_SSL_CODE, pg_conn::next_eo, PG_DIAG_SQLSTATE, pg_fe_sendauth(), pg_hton32, PG_PROTOCOL, PG_PROTOCOL_MAJOR, pg_set_noblock(), PGASYNC_BUSY, PGINVALID_SOCKET, pgpassfileWarning(), PGRES_FATAL_ERROR, PGRES_POLLING_FAILED, PGRES_POLLING_OK, PGRES_POLLING_READING, PGRES_POLLING_WRITING, PGRES_TUPLES_OK, pg_conn_host::port, pqBuildStartupPacket2(), pqBuildStartupPacket3(), pqCheckInBufferSpace(), PQclear(), PQconsumeInput(), pqDropConnection(), pqFlush(), pqGetc(), pqGetErrorNotice3(), pqGetInt(), pqGetpwuid(), PQgetResult(), pqGets_append(), PQgetvalue(), PQisBusy(), PQntuples(), pqPacketSend(), pqReadData(), PQresultErrorField(), PQresultStatus(), pqsecure_initialize(), pqsecure_open_client(), PQsendQuery(), pqSetenvPoll(), pqStrerror(), printfPQExpBuffer(), pg_conn::pversion, pg_conn::raddr, release_all_addrinfo(), pg_conn::requirepeer, restoreErrorMessage(), pg_result::resultStatus, SockAddr::salen, saveErrorMessage(), pg_conn::send_appname, sendTerminateConn(), pg_conn::setenv_state, SETENV_STATE_CLIENT_ENCODING_SEND, setKeepalivesCount(), setKeepalivesIdle(), setKeepalivesInterval(), pg_conn::sigpipe_flag, pg_conn::sigpipe_so, pg_conn::sock, SOCK_ERRNO, SOCK_STRERROR, socket, pg_conn::ssl_in_use, pg_conn::sslmode, pg_conn::status, STATUS_OK, pg_conn::target_session_attrs, termPQExpBuffer(), pg_conn_host::type, useKeepalives(), _internalPQconninfoOption::val, and pg_conn::whichhost.

Referenced by connectDBComplete(), connectDBStart(), libpqrcv_connect(), and PQresetPoll().

2004 {
2005  PGresult *res;
2006  char sebuf[256];
2007  int optval;
2008  PQExpBufferData savedMessage;
2009 
2010  if (conn == NULL)
2011  return PGRES_POLLING_FAILED;
2012 
2013  /* Get the new data */
2014  switch (conn->status)
2015  {
2016  /*
2017  * We really shouldn't have been polled in these two cases, but we
2018  * can handle it.
2019  */
2020  case CONNECTION_BAD:
2021  return PGRES_POLLING_FAILED;
2022  case CONNECTION_OK:
2023  return PGRES_POLLING_OK;
2024 
2025  /* These are reading states */
2027  case CONNECTION_AUTH_OK:
2028  {
2029  /* Load waiting data */
2030  int n = pqReadData(conn);
2031 
2032  if (n < 0)
2033  goto error_return;
2034  if (n == 0)
2035  return PGRES_POLLING_READING;
2036 
2037  break;
2038  }
2039 
2040  /* These are writing states, so we just proceed. */
2041  case CONNECTION_STARTED:
2042  case CONNECTION_MADE:
2043  break;
2044 
2045  /* We allow pqSetenvPoll to decide whether to proceed. */
2046  case CONNECTION_SETENV:
2047  break;
2048 
2049  /* Special cases: proceed without waiting. */
2051  case CONNECTION_NEEDED:
2053  case CONNECTION_CONSUME:
2054  break;
2055 
2056  default:
2058  libpq_gettext(
2059  "invalid connection state, "
2060  "probably indicative of memory corruption\n"
2061  ));
2062  goto error_return;
2063  }
2064 
2065 
2066 keep_going: /* We will come back to here until there is
2067  * nothing left to do. */
2068  switch (conn->status)
2069  {
2070  case CONNECTION_NEEDED:
2071  {
2072  /*
2073  * Try to initiate a connection to one of the addresses
2074  * returned by pg_getaddrinfo_all(). conn->addr_cur is the
2075  * next one to try. We fail when we run out of addresses.
2076  */
2077  for (;;)
2078  {
2079  struct addrinfo *addr_cur;
2080 
2081  /*
2082  * Advance to next possible host, if we've tried all of
2083  * the addresses for the current host.
2084  */
2085  if (conn->addr_cur == NULL)
2086  {
2087  if (++conn->whichhost >= conn->nconnhost)
2088  {
2089  conn->whichhost = 0;
2090  break;
2091  }
2092  conn->addr_cur =
2093  conn->connhost[conn->whichhost].addrlist;
2094  }
2095 
2096  /* Remember current address for possible error msg */
2097  addr_cur = conn->addr_cur;
2098  memcpy(&conn->raddr.addr, addr_cur->ai_addr,
2099  addr_cur->ai_addrlen);
2100  conn->raddr.salen = addr_cur->ai_addrlen;
2101 
2102  conn->sock = socket(addr_cur->ai_family, SOCK_STREAM, 0);
2103  if (conn->sock == PGINVALID_SOCKET)
2104  {
2105  /*
2106  * ignore socket() failure if we have more addresses
2107  * to try
2108  */
2109  if (addr_cur->ai_next != NULL ||
2110  conn->whichhost + 1 < conn->nconnhost)
2111  {
2112  conn->addr_cur = addr_cur->ai_next;
2113  continue;
2114  }
2116  libpq_gettext("could not create socket: %s\n"),
2117  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2118  break;
2119  }
2120 
2121  /*
2122  * Select socket options: no delay of outgoing data for
2123  * TCP sockets, nonblock mode, close-on-exec. Fail if any
2124  * of this fails.
2125  */
2126  if (!IS_AF_UNIX(addr_cur->ai_family))
2127  {
2128  if (!connectNoDelay(conn))
2129  {
2130  pqDropConnection(conn, true);
2131  conn->addr_cur = addr_cur->ai_next;
2132  continue;
2133  }
2134  }
2135  if (!pg_set_noblock(conn->sock))
2136  {
2138  libpq_gettext("could not set socket to nonblocking mode: %s\n"),
2139  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2140  pqDropConnection(conn, true);
2141  conn->addr_cur = addr_cur->ai_next;
2142  continue;
2143  }
2144 
2145 #ifdef F_SETFD
2146  if (fcntl(conn->sock, F_SETFD, FD_CLOEXEC) == -1)
2147  {
2149  libpq_gettext("could not set socket to close-on-exec mode: %s\n"),
2150  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2151  pqDropConnection(conn, true);
2152  conn->addr_cur = addr_cur->ai_next;
2153  continue;
2154  }
2155 #endif /* F_SETFD */
2156 
2157  if (!IS_AF_UNIX(addr_cur->ai_family))
2158  {
2159 #ifndef WIN32
2160  int on = 1;
2161 #endif
2162  int usekeepalives = useKeepalives(conn);
2163  int err = 0;
2164 
2165  if (usekeepalives < 0)
2166  {
2168  libpq_gettext("keepalives parameter must be an integer\n"));
2169  err = 1;
2170  }
2171  else if (usekeepalives == 0)
2172  {
2173  /* Do nothing */
2174  }
2175 #ifndef WIN32
2176  else if (setsockopt(conn->sock,
2177  SOL_SOCKET, SO_KEEPALIVE,
2178  (char *) &on, sizeof(on)) < 0)
2179  {
2181  libpq_gettext("setsockopt(%s) failed: %s\n"),
2182  "SO_KEEPALIVE",
2183  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2184  err = 1;
2185  }
2186  else if (!setKeepalivesIdle(conn)
2187  || !setKeepalivesInterval(conn)
2188  || !setKeepalivesCount(conn))
2189  err = 1;
2190 #else /* WIN32 */
2191 #ifdef SIO_KEEPALIVE_VALS
2192  else if (!setKeepalivesWin32(conn))
2193  err = 1;
2194 #endif /* SIO_KEEPALIVE_VALS */
2195 #endif /* WIN32 */
2196 
2197  if (err)
2198  {
2199  pqDropConnection(conn, true);
2200  conn->addr_cur = addr_cur->ai_next;
2201  continue;
2202  }
2203  }
2204 
2205  /*----------
2206  * We have three methods of blocking SIGPIPE during
2207  * send() calls to this socket:
2208  *
2209  * - setsockopt(sock, SO_NOSIGPIPE)
2210  * - send(sock, ..., MSG_NOSIGNAL)
2211  * - setting the signal mask to SIG_IGN during send()
2212  *
2213  * The third method requires three syscalls per send,
2214  * so we prefer either of the first two, but they are
2215  * less portable. The state is tracked in the following
2216  * members of PGconn:
2217  *
2218  * conn->sigpipe_so - we have set up SO_NOSIGPIPE
2219  * conn->sigpipe_flag - we're specifying MSG_NOSIGNAL
2220  *
2221  * If we can use SO_NOSIGPIPE, then set sigpipe_so here
2222  * and we're done. Otherwise, set sigpipe_flag so that
2223  * we will try MSG_NOSIGNAL on sends. If we get an error
2224  * with MSG_NOSIGNAL, we'll clear that flag and revert to
2225  * signal masking.
2226  *----------
2227  */
2228  conn->sigpipe_so = false;
2229 #ifdef MSG_NOSIGNAL
2230  conn->sigpipe_flag = true;
2231 #else
2232  conn->sigpipe_flag = false;
2233 #endif /* MSG_NOSIGNAL */
2234 
2235 #ifdef SO_NOSIGPIPE
2236  optval = 1;
2237  if (setsockopt(conn->sock, SOL_SOCKET, SO_NOSIGPIPE,
2238  (char *) &optval, sizeof(optval)) == 0)
2239  {
2240  conn->sigpipe_so = true;
2241  conn->sigpipe_flag = false;
2242  }
2243 #endif /* SO_NOSIGPIPE */
2244 
2245  /*
2246  * Start/make connection. This should not block, since we
2247  * are in nonblock mode. If it does, well, too bad.
2248  */
2249  if (connect(conn->sock, addr_cur->ai_addr,
2250  addr_cur->ai_addrlen) < 0)
2251  {
2252  if (SOCK_ERRNO == EINPROGRESS ||
2253 #ifdef WIN32
2254  SOCK_ERRNO == EWOULDBLOCK ||
2255 #endif
2256  SOCK_ERRNO == EINTR)
2257  {
2258  /*
2259  * This is fine - we're in non-blocking mode, and
2260  * the connection is in progress. Tell caller to
2261  * wait for write-ready on socket.
2262  */
2263  conn->status = CONNECTION_STARTED;
2264  return PGRES_POLLING_WRITING;
2265  }
2266  /* otherwise, trouble */
2267  }
2268  else
2269  {
2270  /*
2271  * Hm, we're connected already --- seems the "nonblock
2272  * connection" wasn't. Advance the state machine and
2273  * go do the next stuff.
2274  */
2275  conn->status = CONNECTION_STARTED;
2276  goto keep_going;
2277  }
2278 
2279  /*
2280  * This connection failed --- set up error report, then
2281  * close socket (do it this way in case close() affects
2282  * the value of errno...). We will ignore the connect()
2283  * failure and keep going if there are more addresses.
2284  */
2286  pqDropConnection(conn, true);
2287 
2288  /*
2289  * Try the next address, if any.
2290  */
2291  conn->addr_cur = addr_cur->ai_next;
2292  } /* loop over addresses */
2293 
2294  /*
2295  * Oops, no more addresses. An appropriate error message is
2296  * already set up, so just set the right status.
2297  */
2298  goto error_return;
2299  }
2300 
2301  case CONNECTION_STARTED:
2302  {
2303  ACCEPT_TYPE_ARG3 optlen = sizeof(optval);
2304 
2305  /*
2306  * Write ready, since we've made it here, so the connection
2307  * has been made ... or has failed.
2308  */
2309 
2310  /*
2311  * Now check (using getsockopt) that there is not an error
2312  * state waiting for us on the socket.
2313  */
2314 
2315  if (getsockopt(conn->sock, SOL_SOCKET, SO_ERROR,
2316  (char *) &optval, &optlen) == -1)
2317  {
2319  libpq_gettext("could not get socket error status: %s\n"),
2320  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2321  goto error_return;
2322  }
2323  else if (optval != 0)
2324  {
2325  /*
2326  * When using a nonblocking connect, we will typically see
2327  * connect failures at this point, so provide a friendly
2328  * error message.
2329  */
2330  connectFailureMessage(conn, optval);
2331  pqDropConnection(conn, true);
2332 
2333  /*
2334  * If more addresses remain, keep trying, just as in the
2335  * case where connect() returned failure immediately.
2336  */
2337  if (conn->addr_cur->ai_next != NULL ||
2338  conn->whichhost + 1 < conn->nconnhost)
2339  {
2340  conn->addr_cur = conn->addr_cur->ai_next;
2341  conn->status = CONNECTION_NEEDED;
2342  goto keep_going;
2343  }
2344  goto error_return;
2345  }
2346 
2347  /* Fill in the client address */
2348  conn->laddr.salen = sizeof(conn->laddr.addr);
2349  if (getsockname(conn->sock,
2350  (struct sockaddr *) &conn->laddr.addr,
2351  &conn->laddr.salen) < 0)
2352  {
2354  libpq_gettext("could not get client address from socket: %s\n"),
2355  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2356  goto error_return;
2357  }
2358 
2359  /*
2360  * Make sure we can write before advancing to next step.
2361  */
2362  conn->status = CONNECTION_MADE;
2363  return PGRES_POLLING_WRITING;
2364  }
2365 
2366  case CONNECTION_MADE:
2367  {
2368  char *startpacket;
2369  int packetlen;
2370 
2371 #ifdef HAVE_UNIX_SOCKETS
2372 
2373  /*
2374  * Implement requirepeer check, if requested and it's a
2375  * Unix-domain socket.
2376  */
2377  if (conn->requirepeer && conn->requirepeer[0] &&
2378  IS_AF_UNIX(conn->raddr.addr.ss_family))
2379  {
2380  char pwdbuf[BUFSIZ];
2381  struct passwd pass_buf;
2382  struct passwd *pass;
2383  int passerr;
2384  uid_t uid;
2385  gid_t gid;
2386 
2387  errno = 0;
2388  if (getpeereid(conn->sock, &uid, &gid) != 0)
2389  {
2390  /*
2391  * Provide special error message if getpeereid is a
2392  * stub
2393  */
2394  if (errno == ENOSYS)
2396  libpq_gettext("requirepeer parameter is not supported on this platform\n"));
2397  else
2399  libpq_gettext("could not get peer credentials: %s\n"),
2400  pqStrerror(errno, sebuf, sizeof(sebuf)));
2401  goto error_return;
2402  }
2403 
2404  passerr = pqGetpwuid(uid, &pass_buf, pwdbuf, sizeof(pwdbuf), &pass);
2405  if (pass == NULL)
2406  {
2407  if (passerr != 0)
2409  libpq_gettext("could not look up local user ID %d: %s\n"),
2410  (int) uid,
2411  pqStrerror(passerr, sebuf, sizeof(sebuf)));
2412  else
2414  libpq_gettext("local user with ID %d does not exist\n"),
2415  (int) uid);
2416  goto error_return;
2417  }
2418 
2419  if (strcmp(pass->pw_name, conn->requirepeer) != 0)
2420  {
2422  libpq_gettext("requirepeer specifies \"%s\", but actual peer user name is \"%s\"\n"),
2423  conn->requirepeer, pass->pw_name);
2424  goto error_return;
2425  }
2426  }
2427 #endif /* HAVE_UNIX_SOCKETS */
2428 
2429 #ifdef USE_SSL
2430 
2431  /*
2432  * If SSL is enabled and we haven't already got it running,
2433  * request it instead of sending the startup message.
2434  */
2435  if (IS_AF_UNIX(conn->raddr.addr.ss_family))
2436  {
2437  /* Don't bother requesting SSL over a Unix socket */
2438  conn->allow_ssl_try = false;
2439  }
2440  if (conn->allow_ssl_try && !conn->wait_ssl_try &&
2441  !conn->ssl_in_use)
2442  {
2443  ProtocolVersion pv;
2444 
2445  /*
2446  * Send the SSL request packet.
2447  *
2448  * Theoretically, this could block, but it really
2449  * shouldn't since we only got here if the socket is
2450  * write-ready.
2451  */
2453  if (pqPacketSend(conn, 0, &pv, sizeof(pv)) != STATUS_OK)
2454  {
2456  libpq_gettext("could not send SSL negotiation packet: %s\n"),
2457  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2458  goto error_return;
2459  }
2460  /* Ok, wait for response */
2462  return PGRES_POLLING_READING;
2463  }
2464 #endif /* USE_SSL */
2465 
2466  /*
2467  * Build the startup packet.
2468  */
2469  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2470  startpacket = pqBuildStartupPacket3(conn, &packetlen,
2472  else
2473  startpacket = pqBuildStartupPacket2(conn, &packetlen,
2475  if (!startpacket)
2476  {
2477  /*
2478  * will not appendbuffer here, since it's likely to also
2479  * run out of memory
2480  */
2482  libpq_gettext("out of memory\n"));
2483  goto error_return;
2484  }
2485 
2486  /*
2487  * Send the startup packet.
2488  *
2489  * Theoretically, this could block, but it really shouldn't
2490  * since we only got here if the socket is write-ready.
2491  */
2492  if (pqPacketSend(conn, 0, startpacket, packetlen) != STATUS_OK)
2493  {
2495  libpq_gettext("could not send startup packet: %s\n"),
2496  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2497  free(startpacket);
2498  goto error_return;
2499  }
2500 
2501  free(startpacket);
2502 
2504  return PGRES_POLLING_READING;
2505  }
2506 
2507  /*
2508  * Handle SSL negotiation: wait for postmaster messages and
2509  * respond as necessary.
2510  */
2512  {
2513 #ifdef USE_SSL
2514  PostgresPollingStatusType pollres;
2515 
2516  /*
2517  * On first time through, get the postmaster's response to our
2518  * SSL negotiation packet.
2519  */
2520  if (!conn->ssl_in_use)
2521  {
2522  /*
2523  * We use pqReadData here since it has the logic to
2524  * distinguish no-data-yet from connection closure. Since
2525  * conn->ssl isn't set, a plain recv() will occur.
2526  */
2527  char SSLok;
2528  int rdresult;
2529 
2530  rdresult = pqReadData(conn);
2531  if (rdresult < 0)
2532  {
2533  /* errorMessage is already filled in */
2534  goto error_return;
2535  }
2536  if (rdresult == 0)
2537  {
2538  /* caller failed to wait for data */
2539  return PGRES_POLLING_READING;
2540  }
2541  if (pqGetc(&SSLok, conn) < 0)
2542  {
2543  /* should not happen really */
2544  return PGRES_POLLING_READING;
2545  }
2546  if (SSLok == 'S')
2547  {
2548  /* mark byte consumed */
2549  conn->inStart = conn->inCursor;
2550  /* Set up global SSL state if required */
2551  if (pqsecure_initialize(conn) != 0)
2552  goto error_return;
2553  }
2554  else if (SSLok == 'N')
2555  {
2556  /* mark byte consumed */
2557  conn->inStart = conn->inCursor;
2558  /* OK to do without SSL? */
2559  if (conn->sslmode[0] == 'r' || /* "require" */
2560  conn->sslmode[0] == 'v') /* "verify-ca" or
2561  * "verify-full" */
2562  {
2563  /* Require SSL, but server does not want it */
2565  libpq_gettext("server does not support SSL, but SSL was required\n"));
2566  goto error_return;
2567  }
2568  /* Otherwise, proceed with normal startup */
2569  conn->allow_ssl_try = false;
2570  conn->status = CONNECTION_MADE;
2571  return PGRES_POLLING_WRITING;
2572  }
2573  else if (SSLok == 'E')
2574  {
2575  /*
2576  * Server failure of some sort, such as failure to
2577  * fork a backend process. We need to process and
2578  * report the error message, which might be formatted
2579  * according to either protocol 2 or protocol 3.
2580  * Rather than duplicate the code for that, we flip
2581  * into AWAITING_RESPONSE state and let the code there
2582  * deal with it. Note we have *not* consumed the "E"
2583  * byte here.
2584  */
2586  goto keep_going;
2587  }
2588  else
2589  {
2591  libpq_gettext("received invalid response to SSL negotiation: %c\n"),
2592  SSLok);
2593  goto error_return;
2594  }
2595  }
2596 
2597  /*
2598  * Begin or continue the SSL negotiation process.
2599  */
2600  pollres = pqsecure_open_client(conn);
2601  if (pollres == PGRES_POLLING_OK)
2602  {
2603  /* SSL handshake done, ready to send startup packet */
2604  conn->status = CONNECTION_MADE;
2605  return PGRES_POLLING_WRITING;
2606  }
2607  if (pollres == PGRES_POLLING_FAILED)
2608  {
2609  /*
2610  * Failed ... if sslmode is "prefer" then do a non-SSL
2611  * retry
2612  */
2613  if (conn->sslmode[0] == 'p' /* "prefer" */
2614  && conn->allow_ssl_try /* redundant? */
2615  && !conn->wait_ssl_try) /* redundant? */
2616  {
2617  /* only retry once */
2618  conn->allow_ssl_try = false;
2619  /* Must drop the old connection */
2620  pqDropConnection(conn, true);
2621  conn->status = CONNECTION_NEEDED;
2622  goto keep_going;
2623  }
2624  }
2625  return pollres;
2626 #else /* !USE_SSL */
2627  /* can't get here */
2628  goto error_return;
2629 #endif /* USE_SSL */
2630  }
2631 
2632  /*
2633  * Handle authentication exchange: wait for postmaster messages
2634  * and respond as necessary.
2635  */
2637  {
2638  char beresp;
2639  int msgLength;
2640  int avail;
2641  AuthRequest areq;
2642  int res;
2643 
2644  /*
2645  * Scan the message from current point (note that if we find
2646  * the message is incomplete, we will return without advancing
2647  * inStart, and resume here next time).
2648  */
2649  conn->inCursor = conn->inStart;
2650 
2651  /* Read type byte */
2652  if (pqGetc(&beresp, conn))
2653  {
2654  /* We'll come back when there is more data */
2655  return PGRES_POLLING_READING;
2656  }
2657 
2658  /*
2659  * Validate message type: we expect only an authentication
2660  * request or an error here. Anything else probably means
2661  * it's not Postgres on the other end at all.
2662  */
2663  if (!(beresp == 'R' || beresp == 'E'))
2664  {
2666  libpq_gettext(
2667  "expected authentication request from "
2668  "server, but received %c\n"),
2669  beresp);
2670  goto error_return;
2671  }
2672 
2673  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2674  {
2675  /* Read message length word */
2676  if (pqGetInt(&msgLength, 4, conn))
2677  {
2678  /* We'll come back when there is more data */
2679  return PGRES_POLLING_READING;
2680  }
2681  }
2682  else
2683  {
2684  /* Set phony message length to disable checks below */
2685  msgLength = 8;
2686  }
2687 
2688  /*
2689  * Try to validate message length before using it.
2690  * Authentication requests can't be very large, although GSS
2691  * auth requests may not be that small. Errors can be a
2692  * little larger, but not huge. If we see a large apparent
2693  * length in an error, it means we're really talking to a
2694  * pre-3.0-protocol server; cope.
2695  */
2696  if (beresp == 'R' && (msgLength < 8 || msgLength > 2000))
2697  {
2699  libpq_gettext(
2700  "expected authentication request from "
2701  "server, but received %c\n"),
2702  beresp);
2703  goto error_return;
2704  }
2705 
2706  if (beresp == 'E' && (msgLength < 8 || msgLength > 30000))
2707  {
2708  /* Handle error from a pre-3.0 server */
2709  conn->inCursor = conn->inStart + 1; /* reread data */
2710  if (pqGets_append(&conn->errorMessage, conn))
2711  {
2712  /* We'll come back when there is more data */
2713  return PGRES_POLLING_READING;
2714  }
2715  /* OK, we read the message; mark data consumed */
2716  conn->inStart = conn->inCursor;
2717 
2718  /*
2719  * The postmaster typically won't end its message with a
2720  * newline, so add one to conform to libpq conventions.
2721  */
2722  appendPQExpBufferChar(&conn->errorMessage, '\n');
2723 
2724  /*
2725  * If we tried to open the connection in 3.0 protocol,
2726  * fall back to 2.0 protocol.
2727  */
2728  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2729  {
2730  conn->pversion = PG_PROTOCOL(2, 0);
2731  /* Must drop the old connection */
2732  pqDropConnection(conn, true);
2733  conn->status = CONNECTION_NEEDED;
2734  goto keep_going;
2735  }
2736 
2737  goto error_return;
2738  }
2739 
2740  /*
2741  * Can't process if message body isn't all here yet.
2742  *
2743  * (In protocol 2.0 case, we are assuming messages carry at
2744  * least 4 bytes of data.)
2745  */
2746  msgLength -= 4;
2747  avail = conn->inEnd - conn->inCursor;
2748  if (avail < msgLength)
2749  {
2750  /*
2751  * Before returning, try to enlarge the input buffer if
2752  * needed to hold the whole message; see notes in
2753  * pqParseInput3.
2754  */
2755  if (pqCheckInBufferSpace(conn->inCursor + (size_t) msgLength,
2756  conn))
2757  goto error_return;
2758  /* We'll come back when there is more data */
2759  return PGRES_POLLING_READING;
2760  }
2761 
2762  /* Handle errors. */
2763  if (beresp == 'E')
2764  {
2765  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2766  {
2767  if (pqGetErrorNotice3(conn, true))
2768  {
2769  /* We'll come back when there is more data */
2770  return PGRES_POLLING_READING;
2771  }
2772  }
2773  else
2774  {
2775  if (pqGets_append(&conn->errorMessage, conn))
2776  {
2777  /* We'll come back when there is more data */
2778  return PGRES_POLLING_READING;
2779  }
2780  }
2781  /* OK, we read the message; mark data consumed */
2782  conn->inStart = conn->inCursor;
2783 
2784 #ifdef USE_SSL
2785 
2786  /*
2787  * if sslmode is "allow" and we haven't tried an SSL
2788  * connection already, then retry with an SSL connection
2789  */
2790  if (conn->sslmode[0] == 'a' /* "allow" */
2791  && !conn->ssl_in_use
2792  && conn->allow_ssl_try
2793  && conn->wait_ssl_try)
2794  {
2795  /* only retry once */
2796  conn->wait_ssl_try = false;
2797  /* Must drop the old connection */
2798  pqDropConnection(conn, true);
2799  conn->status = CONNECTION_NEEDED;
2800  goto keep_going;
2801  }
2802 
2803  /*
2804  * if sslmode is "prefer" and we're in an SSL connection,
2805  * then do a non-SSL retry
2806  */
2807  if (conn->sslmode[0] == 'p' /* "prefer" */
2808  && conn->allow_ssl_try
2809  && !conn->wait_ssl_try) /* redundant? */
2810  {
2811  /* only retry once */
2812  conn->allow_ssl_try = false;
2813  /* Must drop the old connection */
2814  pqDropConnection(conn, true);
2815  conn->status = CONNECTION_NEEDED;
2816  goto keep_going;
2817  }
2818 #endif
2819 
2820  goto error_return;
2821  }
2822 
2823  /* It is an authentication request. */
2824  conn->auth_req_received = true;
2825 
2826  /* Get the type of request. */
2827  if (pqGetInt((int *) &areq, 4, conn))
2828  {
2829  /* We'll come back when there are more data */
2830  return PGRES_POLLING_READING;
2831  }
2832  msgLength -= 4;
2833 
2834  /*
2835  * Ensure the password salt is in the input buffer, if it's an
2836  * MD5 request. All the other authentication methods that
2837  * contain extra data in the authentication request are only
2838  * supported in protocol version 3, in which case we already
2839  * read the whole message above.
2840  */
2841  if (areq == AUTH_REQ_MD5 && PG_PROTOCOL_MAJOR(conn->pversion) < 3)
2842  {
2843  msgLength += 4;
2844 
2845  avail = conn->inEnd - conn->inCursor;
2846  if (avail < 4)
2847  {
2848  /*
2849  * Before returning, try to enlarge the input buffer
2850  * if needed to hold the whole message; see notes in
2851  * pqParseInput3.
2852  */
2853  if (pqCheckInBufferSpace(conn->inCursor + (size_t) 4,
2854  conn))
2855  goto error_return;
2856  /* We'll come back when there is more data */
2857  return PGRES_POLLING_READING;
2858  }
2859  }
2860 
2861  /*
2862  * Process the rest of the authentication request message, and
2863  * respond to it if necessary.
2864  *
2865  * Note that conn->pghost must be non-NULL if we are going to
2866  * avoid the Kerberos code doing a hostname look-up.
2867  */
2868  res = pg_fe_sendauth(areq, msgLength, conn);
2869  conn->errorMessage.len = strlen(conn->errorMessage.data);
2870 
2871  /* OK, we have processed the message; mark data consumed */
2872  conn->inStart = conn->inCursor;
2873 
2874  if (res != STATUS_OK)
2875  goto error_return;
2876 
2877  /*
2878  * Just make sure that any data sent by pg_fe_sendauth is
2879  * flushed out. Although this theoretically could block, it
2880  * really shouldn't since we don't send large auth responses.
2881  */
2882  if (pqFlush(conn))
2883  goto error_return;
2884 
2885  if (areq == AUTH_REQ_OK)
2886  {
2887  /* We are done with authentication exchange */
2888  conn->status = CONNECTION_AUTH_OK;
2889 
2890  /*
2891  * Set asyncStatus so that PQgetResult will think that
2892  * what comes back next is the result of a query. See
2893  * below.
2894  */
2895  conn->asyncStatus = PGASYNC_BUSY;
2896  }
2897 
2898  /* Look to see if we have more data yet. */
2899  goto keep_going;
2900  }
2901 
2902  case CONNECTION_AUTH_OK:
2903  {
2904  /*
2905  * Now we expect to hear from the backend. A ReadyForQuery
2906  * message indicates that startup is successful, but we might
2907  * also get an Error message indicating failure. (Notice
2908  * messages indicating nonfatal warnings are also allowed by
2909  * the protocol, as are ParameterStatus and BackendKeyData
2910  * messages.) Easiest way to handle this is to let
2911  * PQgetResult() read the messages. We just have to fake it
2912  * out about the state of the connection, by setting
2913  * asyncStatus = PGASYNC_BUSY (done above).
2914  */
2915 
2916  if (PQisBusy(conn))
2917  return PGRES_POLLING_READING;
2918 
2919  res = PQgetResult(conn);
2920 
2921  /*
2922  * NULL return indicating we have gone to IDLE state is
2923  * expected
2924  */
2925  if (res)
2926  {
2927  if (res->resultStatus != PGRES_FATAL_ERROR)
2929  libpq_gettext("unexpected message from server during startup\n"));
2930  else if (conn->send_appname &&
2931  (conn->appname || conn->fbappname))
2932  {
2933  /*
2934  * If we tried to send application_name, check to see
2935  * if the error is about that --- pre-9.0 servers will
2936  * reject it at this stage of the process. If so,
2937  * close the connection and retry without sending
2938  * application_name. We could possibly get a false
2939  * SQLSTATE match here and retry uselessly, but there
2940  * seems no great harm in that; we'll just get the
2941  * same error again if it's unrelated.
2942  */
2943  const char *sqlstate;
2944 
2945  sqlstate = PQresultErrorField(res, PG_DIAG_SQLSTATE);
2946  if (sqlstate &&
2947  strcmp(sqlstate, ERRCODE_APPNAME_UNKNOWN) == 0)
2948  {
2949  PQclear(res);
2950  conn->send_appname = false;
2951  /* Must drop the old connection */
2952  pqDropConnection(conn, true);
2953  conn->status = CONNECTION_NEEDED;
2954  goto keep_going;
2955  }
2956  }
2957 
2958  /*
2959  * if the resultStatus is FATAL, then conn->errorMessage
2960  * already has a copy of the error; needn't copy it back.
2961  * But add a newline if it's not there already, since
2962  * postmaster error messages may not have one.
2963  */
2964  if (conn->errorMessage.len <= 0 ||
2965  conn->errorMessage.data[conn->errorMessage.len - 1] != '\n')
2966  appendPQExpBufferChar(&conn->errorMessage, '\n');
2967  PQclear(res);
2968  goto error_return;
2969  }
2970 
2971  /* Fire up post-connection housekeeping if needed */
2972  if (PG_PROTOCOL_MAJOR(conn->pversion) < 3)
2973  {
2974  conn->status = CONNECTION_SETENV;
2976  conn->next_eo = EnvironmentOptions;
2977  return PGRES_POLLING_WRITING;
2978  }
2979 
2980  /*
2981  * If a read-write connection is required, see if we have one.
2982  */
2983  if (conn->target_session_attrs != NULL &&
2984  strcmp(conn->target_session_attrs, "read-write") == 0)
2985  {
2986  /*
2987  * We are yet to make a connection. Save all existing
2988  * error messages until we make a successful connection
2989  * state. This is important because PQsendQuery is going
2990  * to reset conn->errorMessage and we will lose error
2991  * messages related to previous hosts we have tried to
2992  * connect and failed.
2993  */
2994  if (!saveErrorMessage(conn, &savedMessage))
2995  goto error_return;
2996 
2997  conn->status = CONNECTION_OK;
2998  if (!PQsendQuery(conn,
2999  "SHOW transaction_read_only"))
3000  {
3001  restoreErrorMessage(conn, &savedMessage);
3002  goto error_return;
3003  }
3005  restoreErrorMessage(conn, &savedMessage);
3006  return PGRES_POLLING_READING;
3007  }
3008 
3009  /* We can release the address lists now. */
3010  release_all_addrinfo(conn);
3011 
3012  /* We are open for business! */
3013  conn->status = CONNECTION_OK;
3014  return PGRES_POLLING_OK;
3015  }
3016 
3017  case CONNECTION_SETENV:
3018 
3019  /*
3020  * Do post-connection housekeeping (only needed in protocol 2.0).
3021  *
3022  * We pretend that the connection is OK for the duration of these
3023  * queries.
3024  */
3025  conn->status = CONNECTION_OK;
3026 
3027  switch (pqSetenvPoll(conn))
3028  {
3029  case PGRES_POLLING_OK: /* Success */
3030  break;
3031 
3032  case PGRES_POLLING_READING: /* Still going */
3033  conn->status = CONNECTION_SETENV;
3034  return PGRES_POLLING_READING;
3035 
3036  case PGRES_POLLING_WRITING: /* Still going */
3037  conn->status = CONNECTION_SETENV;
3038  return PGRES_POLLING_WRITING;
3039 
3040  default:
3041  goto error_return;
3042  }
3043 
3044  /*
3045  * If a read-write connection is requested check for same.
3046  */
3047  if (conn->target_session_attrs != NULL &&
3048  strcmp(conn->target_session_attrs, "read-write") == 0)
3049  {
3050  if (!saveErrorMessage(conn, &savedMessage))
3051  goto error_return;
3052 
3053  conn->status = CONNECTION_OK;
3054  if (!PQsendQuery(conn,
3055  "SHOW transaction_read_only"))
3056  {
3057  restoreErrorMessage(conn, &savedMessage);
3058  goto error_return;
3059  }
3061  restoreErrorMessage(conn, &savedMessage);
3062  return PGRES_POLLING_READING;
3063  }
3064 
3065  /* We can release the address lists now. */
3066  release_all_addrinfo(conn);
3067 
3068  /* We are open for business! */
3069  conn->status = CONNECTION_OK;
3070  return PGRES_POLLING_OK;
3071 
3072  case CONNECTION_CONSUME:
3073  {
3074  conn->status = CONNECTION_OK;
3075  if (!PQconsumeInput(conn))
3076  goto error_return;
3077 
3078  if (PQisBusy(conn))
3079  {
3080  conn->status = CONNECTION_CONSUME;
3081  restoreErrorMessage(conn, &savedMessage);
3082  return PGRES_POLLING_READING;
3083  }
3084 
3085  /*
3086  * Call PQgetResult() again to consume NULL result.
3087  */
3088  res = PQgetResult(conn);
3089  if (res != NULL)
3090  {
3091  PQclear(res);
3092  conn->status = CONNECTION_CONSUME;
3093  goto keep_going;
3094  }
3095 
3096  /* We are open for business! */
3097  conn->status = CONNECTION_OK;
3098  return PGRES_POLLING_OK;
3099  }
3101  {
3102  const char *displayed_host;
3103  const char *displayed_port;
3104 
3105  if (!saveErrorMessage(conn, &savedMessage))
3106  goto error_return;
3107 
3108  conn->status = CONNECTION_OK;
3109  if (!PQconsumeInput(conn))
3110  {
3111  restoreErrorMessage(conn, &savedMessage);
3112  goto error_return;
3113  }
3114 
3115  if (PQisBusy(conn))
3116  {
3118  restoreErrorMessage(conn, &savedMessage);
3119  return PGRES_POLLING_READING;
3120  }
3121 
3122  res = PQgetResult(conn);
3123  if (res && (PQresultStatus(res) == PGRES_TUPLES_OK) &&
3124  PQntuples(res) == 1)
3125  {
3126  char *val;
3127 
3128  val = PQgetvalue(res, 0, 0);
3129  if (strncmp(val, "on", 2) == 0)
3130  {
3131  const char *displayed_host;
3132  const char *displayed_port;
3133 
3134  if (conn->connhost[conn->whichhost].type == CHT_HOST_ADDRESS)
3135  displayed_host = conn->connhost[conn->whichhost].hostaddr;
3136  else
3137  displayed_host = conn->connhost[conn->whichhost].host;
3138  displayed_port = conn->connhost[conn->whichhost].port;
3139  if (displayed_port == NULL || displayed_port[0] == '\0')
3140  displayed_port = DEF_PGPORT_STR;
3141 
3142  PQclear(res);
3143  restoreErrorMessage(conn, &savedMessage);
3144 
3145  /* Not writable; close connection. */
3147  libpq_gettext("could not make a writable "
3148  "connection to server "
3149  "\"%s:%s\"\n"),
3150  displayed_host, displayed_port);
3151  conn->status = CONNECTION_OK;
3152  sendTerminateConn(conn);
3153  pqDropConnection(conn, true);
3154 
3155  /* Skip any remaining addresses for this host. */
3156  conn->addr_cur = NULL;
3157  if (conn->whichhost + 1 < conn->nconnhost)
3158  {
3159  conn->status = CONNECTION_NEEDED;
3160  goto keep_going;
3161  }
3162 
3163  /* No more addresses to try. So we fail. */
3164  goto error_return;
3165  }
3166  PQclear(res);
3167  termPQExpBuffer(&savedMessage);
3168 
3169  /* We can release the address lists now. */
3170  release_all_addrinfo(conn);
3171 
3172  /*
3173  * Finish reading any remaining messages before being
3174  * considered as ready.
3175  */
3176  conn->status = CONNECTION_CONSUME;
3177  goto keep_going;
3178  }
3179 
3180  /*
3181  * Something went wrong with "SHOW transaction_read_only". We
3182  * should try next addresses.
3183  */
3184  if (res)
3185  PQclear(res);
3186  restoreErrorMessage(conn, &savedMessage);
3187 
3188  if (conn->connhost[conn->whichhost].type == CHT_HOST_ADDRESS)
3189  displayed_host = conn->connhost[conn->whichhost].hostaddr;
3190  else
3191  displayed_host = conn->connhost[conn->whichhost].host;
3192  displayed_port = conn->connhost[conn->whichhost].port;
3193  if (displayed_port == NULL || displayed_port[0] == '\0')
3194  displayed_port = DEF_PGPORT_STR;
3196  libpq_gettext("test \"SHOW transaction_read_only\" failed "
3197  "on server \"%s:%s\"\n"),
3198  displayed_host, displayed_port);
3199  conn->status = CONNECTION_OK;
3200  sendTerminateConn(conn);
3201  pqDropConnection(conn, true);
3202 
3203  if (conn->addr_cur->ai_next != NULL ||
3204  conn->whichhost + 1 < conn->nconnhost)
3205  {
3206  conn->addr_cur = conn->addr_cur->ai_next;
3207  conn->status = CONNECTION_NEEDED;
3208  goto keep_going;
3209  }
3210 
3211  /* No more addresses to try. So we fail. */
3212  goto error_return;
3213  }
3214 
3215  default:
3217  libpq_gettext("invalid connection state %d, "
3218  "probably indicative of memory corruption\n"),
3219  conn->status);
3220  goto error_return;
3221  }
3222 
3223  /* Unreachable */
3224 
3225 error_return:
3226 
3227  pgpassfileWarning(conn);
3228 
3229  /*
3230  * We used to close the socket at this point, but that makes it awkward
3231  * for those above us if they wish to remove this socket from their own
3232  * records (an fd_set for example). We'll just have this socket closed
3233  * when PQfinish is called (which is compulsory even after an error, since
3234  * the connection structure must be freed).
3235  */
3236  conn->status = CONNECTION_BAD;
3237  return PGRES_POLLING_FAILED;
3238 }
int pqFlush(PGconn *conn)
Definition: fe-misc.c:961
bool sigpipe_flag
Definition: libpq-int.h:411
int inEnd
Definition: libpq-int.h:434
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
int inStart
Definition: libpq-int.h:432
struct addrinfo * addr_cur
Definition: libpq-int.h:414
char * PQgetvalue(const PGresult *res, int tup_num, int field_num)
Definition: fe-exec.c:3118
static int connectNoDelay(PGconn *conn)
Definition: fe-connect.c:1397
int pg_fe_sendauth(AuthRequest areq, int payloadlen, PGconn *conn)
Definition: fe-auth.c:836
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:128
int getpeereid(int sock, uid_t *uid, gid_t *gid)
Definition: getpeereid.c:35
bool sigpipe_so
Definition: libpq-int.h:410
char * pqBuildStartupPacket2(PGconn *conn, int *packetlen, const PQEnvironmentOption *options)
void appendPQExpBufferStr(PQExpBuffer str, const char *data)
Definition: pqexpbuffer.c:385
#define AUTH_REQ_OK
Definition: pqcomm.h:165
int pqCheckInBufferSpace(size_t bytes_needed, PGconn *conn)
Definition: fe-misc.c:408
static void pgpassfileWarning(PGconn *conn)
Definition: fe-connect.c:6507
char * requirepeer
Definition: libpq-int.h:359
char * host
Definition: libpq-int.h:308
struct sockaddr_storage addr
Definition: pqcomm.h:64
char * pqStrerror(int errnum, char *strerrbuf, size_t buflen)
Definition: thread.c:61
static void release_all_addrinfo(PGconn *conn)
Definition: fe-connect.c:3530
static int setKeepalivesIdle(PGconn *conn)
Definition: fe-connect.c:1539
int pqGetInt(int *result, size_t bytes, PGconn *conn)
Definition: fe-misc.c:267
static bool saveErrorMessage(PGconn *conn, PQExpBuffer savedMessage)
Definition: fe-connect.c:1947
#define connect(s, name, namelen)
Definition: win32_port.h:446
static void sendTerminateConn(PGconn *conn)
Definition: fe-connect.c:3558
void pqDropConnection(PGconn *conn, bool flushInput)
Definition: fe-connect.c:431
#define PG_PROTOCOL_MAJOR(v)
Definition: pqcomm.h:104
int PQntuples(const PGresult *res)
Definition: fe-exec.c:2724
#define PG_DIAG_SQLSTATE
Definition: postgres_ext.h:57
uint32 AuthRequest
Definition: pqcomm.h:179
#define AUTH_REQ_MD5
Definition: pqcomm.h:170
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
pg_conn_host_type type
Definition: libpq-int.h:307
PostgresPollingStatusType pqSetenvPoll(PGconn *conn)
Definition: fe-protocol2.c:49
#define SOCK_STRERROR
Definition: libpq-int.h:774
int PQsendQuery(PGconn *conn, const char *query)
Definition: fe-exec.c:1183
PGAsyncStatusType asyncStatus
Definition: libpq-int.h:381
PGSetenvStatusType setenv_state
Definition: libpq-int.h:415
static int useKeepalives(PGconn *conn)
Definition: fe-connect.c:1521
#define pg_hton32(x)
Definition: pg_bswap.h:121
#define IS_AF_UNIX(fam)
Definition: ip.h:24
#define SOCK_ERRNO
Definition: libpq-int.h:773
int pqGetErrorNotice3(PGconn *conn, bool isError)
Definition: fe-protocol3.c:875
void appendPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:262
#define ERRCODE_APPNAME_UNKNOWN
Definition: fe-connect.c:91
char * hostaddr
Definition: libpq-int.h:309
pg_conn_host * connhost
Definition: libpq-int.h:398
int pqReadData(PGconn *conn)
Definition: fe-misc.c:629
bool ssl_in_use
Definition: libpq-int.h:458
const PQEnvironmentOption * next_eo
Definition: libpq-int.h:416
static void restoreErrorMessage(PGconn *conn, PQExpBuffer savedMessage)
Definition: fe-connect.c:1967
char * appname
Definition: libpq-int.h:339
PostgresPollingStatusType pqsecure_open_client(PGconn *conn)
Definition: fe-secure.c:183
ACCEPT_TYPE_ARG3 salen
Definition: pqcomm.h:65
char * target_session_attrs
Definition: libpq-int.h:366
#define STATUS_OK
Definition: c.h:1008
pgsocket sock
Definition: libpq-int.h:401
uint32 ProtocolVersion
Definition: pqcomm.h:113
int pqGetc(char *result, PGconn *conn)
Definition: fe-misc.c:94
static void connectFailureMessage(PGconn *conn, int errorno)
Definition: fe-connect.c:1425
#define socket(af, type, protocol)
Definition: win32_port.h:442
SockAddr raddr
Definition: libpq-int.h:404
#define PGINVALID_SOCKET
Definition: port.h:33
int pqsecure_initialize(PGconn *conn)
Definition: fe-secure.c:168
int PQconsumeInput(PGconn *conn)
Definition: fe-exec.c:1682
void appendPQExpBufferChar(PQExpBuffer str, char ch)
Definition: pqexpbuffer.c:396
char * sslmode
Definition: libpq-int.h:353
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
#define free(a)
Definition: header.h:65
char * PQresultErrorField(const PGresult *res, int fieldcode)
Definition: fe-exec.c:2709
struct addrinfo * addrlist
Definition: libpq-int.h:315
bool pg_set_noblock(pgsocket sock)
Definition: noblock.c:25
int PQisBusy(PGconn *conn)
Definition: fe-exec.c:1732
char * pqBuildStartupPacket3(PGconn *conn, int *packetlen, const PQEnvironmentOption *options)
ProtocolVersion pversion
Definition: libpq-int.h:405
ConnStatusType status
Definition: libpq-int.h:380
bool auth_req_received
Definition: libpq-int.h:407
int uid_t
Definition: win32_port.h:241
static int setKeepalivesInterval(PGconn *conn)
Definition: fe-connect.c:1571
SockAddr laddr
Definition: libpq-int.h:403
PostgresPollingStatusType
Definition: libpq-fe.h:72
struct addrinfo * ai_next
Definition: getaddrinfo.h:107
int pqGetpwuid(uid_t uid, struct passwd *resultbuf, char *buffer, size_t buflen, struct passwd **result)
Definition: thread.c:95
int pqPacketSend(PGconn *conn, char pack_type, const void *buf, size_t buf_len)
Definition: fe-connect.c:3983
int gid_t
Definition: win32_port.h:242
#define EINPROGRESS
Definition: win32_port.h:346
char * fbappname
Definition: libpq-int.h:340
#define EWOULDBLOCK
Definition: win32_port.h:340
size_t ai_addrlen
Definition: getaddrinfo.h:104
int inCursor
Definition: libpq-int.h:433
#define EINTR
Definition: win32_port.h:334
char * port
Definition: libpq-int.h:310
#define NEGOTIATE_SSL_CODE
Definition: pqcomm.h:205
int nconnhost
Definition: libpq-int.h:396
#define PG_PROTOCOL(m, n)
Definition: pqcomm.h:106
int pqGets_append(PQExpBuffer buf, PGconn *conn)
Definition: fe-misc.c:169
long val
Definition: informix.c:689
PGresult * PQgetResult(PGconn *conn)
Definition: fe-exec.c:1753
struct sockaddr * ai_addr
Definition: getaddrinfo.h:105
static int setKeepalivesCount(PGconn *conn)
Definition: fe-connect.c:1604
int whichhost
Definition: libpq-int.h:397
#define libpq_gettext(x)
Definition: libpq-int.h:760
bool send_appname
Definition: libpq-int.h:417
static const PQEnvironmentOption EnvironmentOptions[]
Definition: fe-connect.c:338
int ai_family
Definition: getaddrinfo.h:101

◆ PQconnectStart()

PGconn* PQconnectStart ( const char *  conninfo)

Definition at line 718 of file fe-connect.c.

References conn, connectDBStart(), CONNECTION_BAD, connectOptions1(), connectOptions2(), makeEmptyPGconn(), and pg_conn::status.

Referenced by PQconnectdb(), and PQping().

719 {
720  PGconn *conn;
721 
722  /*
723  * Allocate memory for the conn structure
724  */
725  conn = makeEmptyPGconn();
726  if (conn == NULL)
727  return NULL;
728 
729  /*
730  * Parse the conninfo string
731  */
732  if (!connectOptions1(conn, conninfo))
733  return conn;
734 
735  /*
736  * Compute derived options
737  */
738  if (!connectOptions2(conn))
739  return conn;
740 
741  /*
742  * Connect to the database
743  */
744  if (!connectDBStart(conn))
745  {
746  /* Just in case we failed to set it in connectDBStart */
747  conn->status = CONNECTION_BAD;
748  }
749 
750  return conn;
751 }
static bool connectOptions1(PGconn *conn, const char *conninfo)
Definition: fe-connect.c:804
PGconn * conn
Definition: streamutil.c:55
static int connectDBStart(PGconn *conn)
Definition: fe-connect.c:1688
static PGconn * makeEmptyPGconn(void)
Definition: fe-connect.c:3313
ConnStatusType status
Definition: libpq-int.h:380
static bool connectOptions2(PGconn *conn)
Definition: fe-connect.c:902

◆ PQconnectStartParams()

PGconn* PQconnectStartParams ( const char *const *  keywords,
const char *const *  values,
int  expand_dbname 
)

Definition at line 639 of file fe-connect.c.

References conn, connectDBStart(), CONNECTION_BAD, connectOptions2(), conninfo_array_parse(), pg_conn::errorMessage, fillPGconn(), makeEmptyPGconn(), PQconninfoFree(), and pg_conn::status.

Referenced by libpqrcv_connect(), PQconnectdbParams(), and PQpingParams().

642 {
643  PGconn *conn;
644  PQconninfoOption *connOptions;
645 
646  /*
647  * Allocate memory for the conn structure
648  */
649  conn = makeEmptyPGconn();
650  if (conn == NULL)
651  return NULL;
652 
653  /*
654  * Parse the conninfo arrays
655  */
656  connOptions = conninfo_array_parse(keywords, values,
657  &conn->errorMessage,
658  true, expand_dbname);
659  if (connOptions == NULL)
660  {
661  conn->status = CONNECTION_BAD;
662  /* errorMessage is already set */
663  return conn;
664  }
665 
666  /*
667  * Move option values into conn structure
668  */
669  if (!fillPGconn(conn, connOptions))
670  {
671  PQconninfoFree(connOptions);
672  return conn;
673  }
674 
675  /*
676  * Free the option info - all is in conn now
677  */
678  PQconninfoFree(connOptions);
679 
680  /*
681  * Compute derived options
682  */
683  if (!connectOptions2(conn))
684  return conn;
685 
686  /*
687  * Connect to the database
688  */
689  if (!connectDBStart(conn))
690  {
691  /* Just in case we failed to set it in connectDBStart */
692  conn->status = CONNECTION_BAD;
693  }
694 
695  return conn;
696 }
PGconn * conn
Definition: streamutil.c:55
static int connectDBStart(PGconn *conn)
Definition: fe-connect.c:1688
void PQconninfoFree(PQconninfoOption *connOptions)
Definition: fe-connect.c:5965
static PGconn * makeEmptyPGconn(void)
Definition: fe-connect.c:3313
PQExpBufferData errorMessage
Definition: libpq-int.h:494
static bool fillPGconn(PGconn *conn, PQconninfoOption *connOptions)
Definition: fe-connect.c:762
ConnStatusType status
Definition: libpq-int.h:380
static Datum values[MAXATTR]
Definition: bootstrap.c:164
static bool connectOptions2(PGconn *conn)
Definition: fe-connect.c:902
static PQconninfoOption * conninfo_array_parse(const char *const *keywords, const char *const *values, PQExpBuffer errorMessage, bool use_defaults, int expand_dbname)
Definition: fe-connect.c:5029

◆ PQconninfo()

PQconninfoOption* PQconninfo ( PGconn conn)

Definition at line 5924 of file fe-connect.c.

References conninfo_init(), conninfo_storeval(), _internalPQconninfoOption::connofs, initPQExpBuffer(), _internalPQconninfoOption::keyword, PQExpBufferDataBroken, and termPQExpBuffer().

Referenced by exec_command_conninfo(), GenerateRecoveryConf(), and libpqrcv_get_conninfo().

5925 {
5926  PQExpBufferData errorBuf;
5927  PQconninfoOption *connOptions;
5928 
5929  if (conn == NULL)
5930  return NULL;
5931 
5932  /* We don't actually report any errors here, but callees want a buffer */
5933  initPQExpBuffer(&errorBuf);
5934  if (PQExpBufferDataBroken(errorBuf))
5935  return NULL; /* out of memory already :-( */
5936 
5937  connOptions = conninfo_init(&errorBuf);
5938 
5939  if (connOptions != NULL)
5940  {
5942 
5943  for (option = PQconninfoOptions; option->keyword; option++)
5944  {
5945  char **connmember;
5946 
5947  if (option->connofs < 0)
5948  continue;
5949 
5950  connmember = (char **) ((char *) conn + option->connofs);
5951 
5952  if (*connmember)
5953  conninfo_storeval(connOptions, option->keyword, *connmember,
5954  &errorBuf, true, false);
5955  }
5956  }
5957 
5958  termPQExpBuffer(&errorBuf);
5959 
5960  return connOptions;
5961 }
static PQconninfoOption * conninfo_storeval(PQconninfoOption *connOptions, const char *keyword, const char *value, PQExpBuffer errorMessage, bool ignoreMissing, bool uri_decode)
Definition: fe-connect.c:5841
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:128
static PQconninfoOption * conninfo_init(PQExpBuffer errorMessage)
Definition: fe-connect.c:4757
static const internalPQconninfoOption PQconninfoOptions[]
Definition: fe-connect.c:183
#define PQExpBufferDataBroken(buf)
Definition: pqexpbuffer.h:67
void initPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:89

◆ PQconninfoFree()

void PQconninfoFree ( PQconninfoOption connOptions)

Definition at line 5965 of file fe-connect.c.

References free, _PQconninfoOption::keyword, and _PQconninfoOption::val.

Referenced by check_pghost_envvar(), connectDatabase(), connectOptions1(), conninfo_array_parse(), conninfo_parse(), conninfo_uri_parse(), dblink_connstr_check(), exec_command_conninfo(), GenerateRecoveryConf(), GetConnection(), libpqrcv_check_conninfo(), libpqrcv_get_conninfo(), PQconndefaults(), and PQconnectStartParams().

5966 {
5968 
5969  if (connOptions == NULL)
5970  return;
5971 
5972  for (option = connOptions; option->keyword != NULL; option++)
5973  {
5974  if (option->val != NULL)
5975  free(option->val);
5976  }
5977  free(connOptions);
5978 }
#define free(a)
Definition: header.h:65

◆ PQconninfoParse()

PQconninfoOption* PQconninfoParse ( const char *  conninfo,
char **  errmsg 
)

Definition at line 4735 of file fe-connect.c.

References PQExpBufferData::data, initPQExpBuffer(), parse_connection_string(), PQExpBufferDataBroken, and termPQExpBuffer().

Referenced by connectDatabase(), dblink_connstr_check(), GetConnection(), libpqrcv_check_conninfo(), and main().

4736 {
4737  PQExpBufferData errorBuf;
4738  PQconninfoOption *connOptions;
4739 
4740  if (errmsg)
4741  *errmsg = NULL; /* default */
4742  initPQExpBuffer(&errorBuf);
4743  if (PQExpBufferDataBroken(errorBuf))
4744  return NULL; /* out of memory already :-( */
4745  connOptions = parse_connection_string(conninfo, &errorBuf, false);
4746  if (connOptions == NULL && errmsg)
4747  *errmsg = errorBuf.data;
4748  else
4749  termPQExpBuffer(&errorBuf);
4750  return connOptions;
4751 }
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:128
static PQconninfoOption * parse_connection_string(const char *conninfo, PQExpBuffer errorMessage, bool use_defaults)
Definition: fe-connect.c:4797
#define PQExpBufferDataBroken(buf)
Definition: pqexpbuffer.h:67
int errmsg(const char *fmt,...)
Definition: elog.c:797
void initPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:89

◆ PQconsumeInput()

int PQconsumeInput ( PGconn conn)

Definition at line 1682 of file fe-exec.c.

References pqFlush(), pqIsnonblocking, and pqReadData().

Referenced by CopyStreamReceive(), dblink_get_notify(), dblink_is_busy(), doCustom(), GetIdleSlot(), libpqrcv_PQexec(), libpqrcv_receive(), main(), pgfdw_get_cleanup_result(), pgfdw_get_result(), PQconnectPoll(), StreamLogicalLog(), and try_complete_step().

1683 {
1684  if (!conn)
1685  return 0;
1686 
1687  /*
1688  * for non-blocking connections try to flush the send-queue, otherwise we
1689  * may never get a response for something that may not have already been
1690  * sent because it's in our write buffer!
1691  */
1692  if (pqIsnonblocking(conn))
1693  {
1694  if (pqFlush(conn) < 0)
1695  return 0;
1696  }
1697 
1698  /*
1699  * Load more data, if available. We do this no matter what state we are
1700  * in, since we are probably getting called because the application wants
1701  * to get rid of a read-select condition. Note that we will NOT block
1702  * waiting for more input.
1703  */
1704  if (pqReadData(conn) < 0)
1705  return 0;
1706 
1707  /* Parsing of the data waits till later. */
1708  return 1;
1709 }
int pqFlush(PGconn *conn)
Definition: fe-misc.c:961
#define pqIsnonblocking(conn)
Definition: libpq-int.h:754
int pqReadData(PGconn *conn)
Definition: fe-misc.c:629

◆ PQcopyResult()

PGresult* PQcopyResult ( const PGresult src,
int  flags 
)

Definition at line 293 of file fe-exec.c.

References pg_result::attDescs, pg_result::client_encoding, pg_result::cmdStatus, PGEventResultCopy::dest, generate_unaccent_rules::dest, dupEvents(), pg_result::events, i, pgresAttValue::len, pg_result::nEvents, pg_result::noticeHooks, pg_result::ntups, pg_result::numAttributes, PGEvent::passThrough, PG_COPYRES_ATTRS, PG_COPYRES_EVENTS, PG_COPYRES_NOTICEHOOKS, PG_COPYRES_TUPLES, PGEVT_RESULTCOPY, PGRES_TUPLES_OK, PQclear(), PQmakeEmptyPGresult(), PQsetResultAttrs(), PQsetvalue(), PGEvent::proc, PGEvent::resultInitialized, PGEventResultCopy::src, pg_result::tuples, and pgresAttValue::value.

Referenced by pqRowProcessor().

294 {
295  PGresult *dest;
296  int i;
297 
298  if (!src)
299  return NULL;
300 
301  dest = PQmakeEmptyPGresult(NULL, PGRES_TUPLES_OK);
302  if (!dest)
303  return NULL;
304 
305  /* Always copy these over. Is cmdStatus really useful here? */
306  dest->client_encoding = src->client_encoding;
307  strcpy(dest->cmdStatus, src->cmdStatus);
308 
309  /* Wants attrs? */
310  if (flags & (PG_COPYRES_ATTRS | PG_COPYRES_TUPLES))
311  {
312  if (!PQsetResultAttrs(dest, src->numAttributes, src->attDescs))
313  {
314  PQclear(dest);
315  return NULL;
316  }
317  }
318 
319  /* Wants to copy tuples? */
320  if (flags & PG_COPYRES_TUPLES)
321  {
322  int tup,
323  field;
324 
325  for (tup = 0; tup < src->ntups; tup++)
326  {
327  for (field = 0; field < src->numAttributes; field++)
328  {
329  if (!PQsetvalue(dest, tup, field,
330  src->tuples[tup][field].value,
331  src->tuples[tup][field].len))
332  {
333  PQclear(dest);
334  return NULL;
335  }
336  }
337  }
338  }
339 
340  /* Wants to copy notice hooks? */
341  if (flags & PG_COPYRES_NOTICEHOOKS)
342  dest->noticeHooks = src->noticeHooks;
343 
344  /* Wants to copy PGEvents? */
345  if ((flags & PG_COPYRES_EVENTS) && src->nEvents > 0)
346  {
347  dest->events = dupEvents(src->events, src->nEvents);
348  if (!dest->events)
349  {
350  PQclear(dest);
351  return NULL;
352  }
353  dest->nEvents = src->nEvents;
354  }
355 
356  /* Okay, trigger PGEVT_RESULTCOPY event */
357  for (i = 0; i < dest->nEvents; i++)
358  {
359  if (src->events[i].resultInitialized)
360  {
361  PGEventResultCopy evt;
362 
363  evt.src = src;
364  evt.dest = dest;
365  if (!dest->events[i].proc(PGEVT_RESULTCOPY, &evt,
366  dest->events[i].passThrough))
367  {
368  PQclear(dest);
369  return NULL;
370  }
371  dest->events[i].resultInitialized = true;
372  }
373  }
374 
375  return dest;
376 }
static PGEvent * dupEvents(PGEvent *events, int count)
Definition: fe-exec.c:384
const PGresult * src
Definition: libpq-events.h:60
bool resultInitialized
Definition: libpq-int.h:164
int PQsetvalue(PGresult *res, int tup_num, int field_num, char *value, int len)
Definition: fe-exec.c:424
int nEvents
Definition: libpq-int.h:188
PGresAttDesc * attDescs
Definition: libpq-int.h:171
#define PG_COPYRES_TUPLES
Definition: libpq-fe.h:35
PGresAttValue ** tuples
Definition: libpq-int.h:172
#define PG_COPYRES_EVENTS
Definition: libpq-fe.h:36
PGNoticeHooks noticeHooks
Definition: libpq-int.h:186
#define PG_COPYRES_NOTICEHOOKS
Definition: libpq-fe.h:37
int PQsetResultAttrs(PGresult *res, int numAttributes, PGresAttDesc *attDescs)
Definition: fe-exec.c:228
PGresult * PQmakeEmptyPGresult(PGconn *conn, ExecStatusType status)
Definition: fe-exec.c:142
int numAttributes
Definition: libpq-int.h:170
#define PG_COPYRES_ATTRS
Definition: libpq-fe.h:34
void PQclear(PGresult *res)
Definition: fe-exec.c:671
int ntups
Definition: libpq-int.h:169
PGEventProc proc
Definition: libpq-int.h:160
char cmdStatus[CMDSTATUS_LEN]
Definition: libpq-int.h:178
int i
void * passThrough
Definition: libpq-int.h:162
char * value
Definition: libpq-int.h:138
PGEvent * events
Definition: libpq-int.h:187
PGresult * dest
Definition: libpq-events.h:61
int client_encoding
Definition: libpq-int.h:189

◆ PQdb()

◆ PQdescribePortal()

PGresult* PQdescribePortal ( PGconn conn,
const char *  portal 
)

Definition at line 2133 of file fe-exec.c.

References PQexecFinish(), PQexecStart(), and PQsendDescribe().

2134 {
2135  if (!PQexecStart(conn))
2136  return NULL;
2137  if (!PQsendDescribe(conn, 'P', portal))
2138  return NULL;
2139  return PQexecFinish(conn);
2140 }
static int PQsendDescribe(PGconn *conn, char desc_type, const char *desc_target)
Definition: fe-exec.c:2178
static PGresult * PQexecFinish(PGconn *conn)
Definition: fe-exec.c:2053
static bool PQexecStart(PGconn *conn)
Definition: fe-exec.c:1979

◆ PQdescribePrepared()

PGresult* PQdescribePrepared ( PGconn conn,
const char *  stmt 
)

Definition at line 2114 of file fe-exec.c.

References PQexecFinish(), PQexecStart(), and PQsendDescribe().

Referenced by DescribeQuery(), and ECPGdescribe().

2115 {
2116  if (!PQexecStart(conn))
2117  return NULL;
2118  if (!PQsendDescribe(conn, 'S', stmt))
2119  return NULL;
2120  return PQexecFinish(conn);
2121 }
static int PQsendDescribe(PGconn *conn, char desc_type, const char *desc_target)
Definition: fe-exec.c:2178
static PGresult * PQexecFinish(PGconn *conn)
Definition: fe-exec.c:2053
static bool PQexecStart(PGconn *conn)
Definition: fe-exec.c:1979

◆ PQdisplayTuples()

void PQdisplayTuples ( const PGresult res,
FILE *  fp,
int  fillAlign,
const char *  fieldSep,
int  printHeader,
int  quiet 
)

Definition at line 578 of file fe-print.c.

References DEFAULT_FIELD_SEP, fill(), free, i, libpq_gettext, malloc, PQfname(), PQgetlength(), PQgetvalue(), PQnfields(), and PQntuples().

585 {
586 #define DEFAULT_FIELD_SEP " "
587 
588  int i,
589  j;
590  int nFields;
591  int nTuples;
592  int *fLength = NULL;
593 
594  if (fieldSep == NULL)
595  fieldSep = DEFAULT_FIELD_SEP;
596 
597  /* Get some useful info about the results */
598  nFields = PQnfields(res);
599  nTuples = PQntuples(res);
600 
601  if (fp == NULL)
602  fp = stdout;
603 
604  /* Figure the field lengths to align to */
605  /* will be somewhat time consuming for very large results */
606  if (fillAlign)
607  {
608  fLength = (int *) malloc(nFields * sizeof(int));
609  if (!fLength)
610  {
611  fprintf(stderr, libpq_gettext("out of memory\n"));
612  abort();
613  }
614 
615  for (j = 0; j < nFields; j++)
616  {
617  fLength[j] = strlen(PQfname(res, j));
618  for (i = 0; i < nTuples; i++)
619  {
620  int flen = PQgetlength(res, i, j);
621 
622  if (flen > fLength[j])
623  fLength[j] = flen;
624  }
625  }
626  }
627 
628  if (printHeader)
629  {
630  /* first, print out the attribute names */
631  for (i = 0; i < nFields; i++)
632  {
633  fputs(PQfname(res, i), fp);
634  if (fillAlign)
635  fill(strlen(PQfname(res, i)), fLength[i], ' ', fp);
636  fputs(fieldSep, fp);
637  }
638  fprintf(fp, "\n");
639 
640  /* Underline the attribute names */
641  for (i = 0; i < nFields; i++)
642  {
643  if (fillAlign)
644  fill(0, fLength[i], '-', fp);
645  fputs(fieldSep, fp);
646  }
647  fprintf(fp, "\n");
648  }
649 
650  /* next, print out the instances */
651  for (i = 0; i < nTuples; i++)
652  {
653  for (j = 0; j < nFields; j++)
654  {
655  fprintf(fp, "%s", PQgetvalue(res, i, j));
656  if (fillAlign)
657  fill(strlen(PQgetvalue(res, i, j)), fLength[j], ' ', fp);
658  fputs(fieldSep, fp);
659  }
660  fprintf(fp, "\n");
661  }
662 
663  if (!quiet)
664  fprintf(fp, "\nQuery returned %d row%s.\n", PQntuples(res),
665  (PQntuples(res) == 1) ? "" : "s");
666 
667  fflush(fp);
668 
669  if (fLength)
670  free(fLength);
671 }
static void fill(int length, int max, char filler, FILE *fp)
Definition: fe-print.c:761
int PQgetlength(const PGresult *res, int tup_num, int field_num)
Definition: fe-exec.c:3129
int PQnfields(const PGresult *res)
Definition: fe-exec.c:2732
char * PQgetvalue(const PGresult *res, int tup_num, int field_num)
Definition: fe-exec.c:3118
char * PQfname(const PGresult *res, int field_num)
Definition: fe-exec.c:2810
int PQntuples(const PGresult *res)
Definition: fe-exec.c:2724
#define malloc(a)
Definition: header.h:50
#define free(a)
Definition: header.h:65
#define DEFAULT_FIELD_SEP
int i
#define libpq_gettext(x)
Definition: libpq-int.h:760

◆ PQdsplen()

int PQdsplen ( const char *  s,
int  encoding 
)

Definition at line 1190 of file fe-misc.c.

References pg_encoding_dsplen().

Referenced by pg_wcsformat(), pg_wcssize(), pg_wcswidth(), and strlen_max_width().

1191 {
1192  return pg_encoding_dsplen(encoding, s);
1193 }
int pg_encoding_dsplen(int encoding, const char *mbstr)
Definition: wchar.c:1796
int32 encoding
Definition: pg_database.h:33

◆ PQencryptPassword()

char* PQencryptPassword ( const char *  passwd,
const char *  user 
)

Definition at line 1117 of file fe-auth.c.

References free, malloc, MD5_PASSWD_LEN, and pg_md5_encrypt().

1118 {
1119  char *crypt_pwd;
1120 
1121  crypt_pwd = malloc(MD5_PASSWD_LEN + 1);
1122  if (!crypt_pwd)
1123  return NULL;
1124 
1125  if (!pg_md5_encrypt(passwd, user, strlen(user), crypt_pwd))
1126  {
1127  free(crypt_pwd);
1128  return NULL;
1129  }
1130 
1131  return crypt_pwd;
1132 }
#define malloc(a)
Definition: header.h:50
bool pg_md5_encrypt(const char *passwd, const char *salt, size_t salt_len, char *buf)
Definition: md5.c:323
#define MD5_PASSWD_LEN
Definition: md5.h:19
#define free(a)
Definition: header.h:65
static char * user
Definition: pg_regress.c:93

◆ PQencryptPasswordConn()

char* PQencryptPasswordConn ( PGconn conn,
const char *  passwd,
const char *  user,
const char *  algorithm 
)

Definition at line 1159 of file fe-auth.c.

References pg_conn::errorMessage, free, libpq_gettext, malloc, MAX_ALGORITHM_NAME_LEN, MD5_PASSWD_LEN, pg_fe_scram_build_verifier(), pg_md5_encrypt(), PGRES_TUPLES_OK, PQclear(), PQexec(), PQgetvalue(), PQnfields(), PQntuples(), PQresultStatus(), printfPQExpBuffer(), and val.

Referenced by exec_command_password(), and main().

1161 {
1162 #define MAX_ALGORITHM_NAME_LEN 50
1163  char algobuf[MAX_ALGORITHM_NAME_LEN + 1];
1164  char *crypt_pwd = NULL;
1165 
1166  if (!conn)
1167  return NULL;
1168 
1169  /* If no algorithm was given, ask the server. */
1170  if (algorithm == NULL)
1171  {
1172  PGresult *res;
1173  char *val;
1174 
1175  res = PQexec(conn, "show password_encryption");
1176  if (res == NULL)
1177  {
1178  /* PQexec() should've set conn->errorMessage already */
1179  return NULL;
1180  }
1181  if (PQresultStatus(res) != PGRES_TUPLES_OK)
1182  {
1183  /* PQexec() should've set conn->errorMessage already */
1184  PQclear(res);
1185  return NULL;
1186  }
1187  if (PQntuples(res) != 1 || PQnfields(res) != 1)
1188  {
1189  PQclear(res);
1191  libpq_gettext("unexpected shape of result set returned for SHOW\n"));
1192  return NULL;
1193  }
1194  val = PQgetvalue(res, 0, 0);
1195 
1196  if (strlen(val) > MAX_ALGORITHM_NAME_LEN)
1197  {
1198  PQclear(res);
1200  libpq_gettext("password_encryption value too long\n"));
1201  return NULL;
1202  }
1203  strcpy(algobuf, val);
1204  PQclear(res);
1205 
1206  algorithm = algobuf;
1207  }
1208 
1209  /*
1210  * Also accept "on" and "off" as aliases for "md5", because
1211  * password_encryption was a boolean before PostgreSQL 10. We refuse to
1212  * send the password in plaintext even if it was "off".
1213  */
1214  if (strcmp(algorithm, "on") == 0 ||
1215  strcmp(algorithm, "off") == 0)
1216  algorithm = "md5";
1217 
1218  /*
1219  * Ok, now we know what algorithm to use
1220  */
1221  if (strcmp(algorithm, "scram-sha-256") == 0)
1222  {
1223  crypt_pwd = pg_fe_scram_build_verifier(passwd);
1224  }
1225  else if (strcmp(algorithm, "md5") == 0)
1226  {
1227  crypt_pwd = malloc(MD5_PASSWD_LEN + 1);
1228  if (crypt_pwd)
1229  {
1230  if (!pg_md5_encrypt(passwd, user, strlen(user), crypt_pwd))
1231  {
1232  free(crypt_pwd);
1233  crypt_pwd = NULL;
1234  }
1235  }
1236  }
1237  else
1238  {
1240  libpq_gettext("unrecognized password encryption algorithm \"%s\"\n"),
1241  algorithm);
1242  return NULL;
1243  }
1244 
1245  if (!crypt_pwd)
1247  libpq_gettext("out of memory\n"));
1248 
1249  return crypt_pwd;
1250 }
int PQnfields(const PGresult *res)
Definition: fe-exec.c:2732
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:234
char * PQgetvalue(const PGresult *res, int tup_num, int field_num)
Definition: fe-exec.c:3118
int PQntuples(const PGresult *res)
Definition: fe-exec.c:2724
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2647
#define malloc(a)
Definition: header.h:50
#define MAX_ALGORITHM_NAME_LEN
bool pg_md5_encrypt(const char *passwd, const char *salt, size_t salt_len, char *buf)
Definition: md5.c:323
PQExpBufferData errorMessage
Definition: libpq-int.h:494
void PQclear(PGresult *res)
Definition: fe-exec.c:671
#define MD5_PASSWD_LEN
Definition: md5.h:19
#define free(a)
Definition: header.h:65
char * pg_fe_scram_build_verifier(const char *password)
static char * user
Definition: pg_regress.c:93
PGresult * PQexec(PGconn *conn, const char *query)
Definition: fe-exec.c:1897
long val
Definition: informix.c:689
#define libpq_gettext(x)
Definition: libpq-int.h:760

◆ PQendcopy()

int PQendcopy ( PGconn conn)

Definition at line 2573 of file fe-exec.c.

References PG_PROTOCOL_MAJOR, pqEndcopy2(), pqEndcopy3(), and pg_conn::pversion.

Referenced by ecpg_check_PQresult(), initGenerateData(), and libpqrcv_endstreaming().

2574 {
2575  if (!conn)
2576  return 0;
2577 
2578  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2579  return pqEndcopy3(conn);
2580  else
2581  return pqEndcopy2(conn);
2582 }
#define PG_PROTOCOL_MAJOR(v)
Definition: pqcomm.h:104
int pqEndcopy3(PGconn *conn)
ProtocolVersion pversion
Definition: libpq-int.h:405
int pqEndcopy2(PGconn *conn)

◆ PQenv2encoding()

int PQenv2encoding ( void  )

Definition at line 1199 of file fe-misc.c.

References dgettext, dngettext, encoding, libpq_gettext, libpq_ngettext, pg_char_to_encoding(), PG_SQL_ASCII, PG_TEXTDOMAIN, and generate_unaccent_rules::str.

Referenced by main().

1200 {
1201  char *str;
1202  int encoding = PG_SQL_ASCII;
1203 
1204  str = getenv("PGCLIENTENCODING");
1205  if (str && *str != '\0')
1206  {
1207  encoding = pg_char_to_encoding(str);
1208  if (encoding < 0)
1209  encoding = PG_SQL_ASCII;
1210  }
1211  return encoding;
1212 }
int pg_char_to_encoding(const char *name)
Definition: encnames.c:551
int32 encoding
Definition: pg_database.h:33

◆ PQerrorMessage()

char* PQerrorMessage ( const PGconn conn)

Definition at line 6116 of file fe-connect.c.

References PQExpBufferData::data, pg_conn::errorMessage, and libpq_gettext.

Referenced by _connectDB(), _doSetSessionAuth(), _doSetWithOids(), _selectOutputSchema(), _selectTablespace(), AcceptResult(), BaseBackup(), check_loadable_libraries(), check_prepare_conn(), CheckCopyStreamStop(), cluster_one_database(), connect_pg_server(), connectDatabase(), ConnectDatabase(), connectToServer(), CopyStreamPoll(), CopyStreamReceive(), CreateReplicationSlot(), dblink_connect(), dblink_error_message(), dblink_get_conn(), dblink_res_error(), dblink_send_query(), DescribeQuery(), die_on_query_failure(), do_connect(), do_lo_export(), do_lo_import(), do_lo_unlink(), doConnect(), doCustom(), DropReplicationSlot(), dumpBlobs(), dumpTableData_copy(), ecpg_check_PQresult(), ecpg_raise_backend(), ECPGconnect(), EndDBCopyMode(), exec_command_password(), executeCommand(), executeQuery(), executeQueryOrDie(), ExecuteSqlCommand(), ExecuteSqlCommandBuf(), executeStatement(), fetch_file_range(), GetConnection(), handleCopyIn(), handleCopyOut(), HandleEndOfCopyStream(), initGenerateData(), libpq_executeFileMap(), libpqConnect(), libpqrcv_connect(), libpqrcv_create_slot(), libpqrcv_endstreaming(), libpqrcv_exec(), libpqrcv_identify_system(), libpqrcv_readtimelinehistoryfile(), libpqrcv_receive(), libpqrcv_send(), libpqrcv_startstreaming(), main(), my_truncate(), overwrite(), pg_attribute_noreturn(), pgfdw_report_error(), pickout(), ProcessQueryResult(), ProcessXLogDataMsg(), psql_get_variable(), ReceiveAndUnpackTarFile(), receiveFileChunks(), ReceiveTarFile(), ReceiveXlogStream(), reindex_one_database(), reindex_system_catalogs(), RetrieveDataDirCreatePerm(), RetrieveWalSegSize(), run_permutation(), run_vacuum_command(), RunIdentifySystem(), sendCommand(), sendFeedback(), SendQuery(), sql_conn(), sql_exec(), start_postmaster(), StartRestoreBlob(), storeQueryResult(), StreamLogicalLog(), threadRun(), try_complete_step(), tryExecuteStatement(), and vacuumlo().

6117 {
6118  if (!conn)
6119  return libpq_gettext("connection pointer is NULL\n");
6120 
6121  return conn->errorMessage.data;
6122 }
PQExpBufferData errorMessage
Definition: libpq-int.h:494
#define libpq_gettext(x)
Definition: libpq-int.h:760

◆ PQescapeBytea()

unsigned char* PQescapeBytea ( const unsigned char *  from,
size_t  from_length,
size_t *  to_length 
)

Definition at line 3681 of file fe-exec.c.

References PQescapeByteaInternal(), and static_std_strings.

3682 {
3683  return PQescapeByteaInternal(NULL, from, from_length, to_length,
3685  false /* can't use hex */ );
3686 }
static bool static_std_strings
Definition: fe-exec.c:51
static unsigned char * PQescapeByteaInternal(PGconn *conn, const unsigned char *from, size_t from_length, size_t *to_length, bool std_strings, bool use_hex)
Definition: fe-exec.c:3572

◆ PQescapeByteaConn()

unsigned char* PQescapeByteaConn ( PGconn conn,
const unsigned char *  from,
size_t  from_length,
size_t *  to_length 
)

Definition at line 3669 of file fe-exec.c.

References PQescapeByteaInternal(), pg_conn::std_strings, and pg_conn::sversion.

3672 {
3673  if (!conn)
3674  return NULL;
3675  return PQescapeByteaInternal(conn, from, from_length, to_length,
3676  conn->std_strings,
3677  (conn->sversion >= 90000));
3678 }
int sversion
Definition: libpq-int.h:406
bool std_strings
Definition: libpq-int.h:424
static unsigned char * PQescapeByteaInternal(PGconn *conn, const unsigned char *from, size_t from_length, size_t *to_length, bool std_strings, bool use_hex)
Definition: fe-exec.c:3572

◆ PQescapeIdentifier()

char* PQescapeIdentifier ( PGconn conn,
const char *  str,
size_t  len 
)

Definition at line 3525 of file fe-exec.c.

References PQescapeInternal().

Referenced by initCreatePKeys(), initCreateTables(), psql_get_variable(), stringlist_to_identifierstr(), and vacuumlo().

3526 {
3527  return PQescapeInternal(conn, str, len, true);
3528 }
static char * PQescapeInternal(PGconn *conn, const char *str, size_t len, bool as_ident)
Definition: fe-exec.c:3398

◆ PQescapeLiteral()

char* PQescapeLiteral ( PGconn conn,
const char *  str,
size_t  len 
)

Definition at line 3519 of file fe-exec.c.

References PQescapeInternal().

Referenced by DescribeQuery(), libpqrcv_startstreaming(), and psql_get_variable().

3520 {
3521  return PQescapeInternal(conn, str, len, false);
3522 }
static char * PQescapeInternal(PGconn *conn, const char *str, size_t len, bool as_ident)
Definition: fe-exec.c:3398

◆ PQescapeString()

size_t PQescapeString ( char *  to,
const char *  from,
size_t  length 
)

Definition at line 3383 of file fe-exec.c.

References PQescapeStringInternal(), static_client_encoding, and static_std_strings.

Referenced by get_comma_elts(), and quote_postgres().

3384 {
3385  return PQescapeStringInternal(NULL, to, from, length, NULL,
3388 }
static bool static_std_strings
Definition: fe-exec.c:51
int length(const List *list)
Definition: list.c:1333
static int static_client_encoding
Definition: fe-exec.c:50
static size_t PQescapeStringInternal(PGconn *conn, char *to, const char *from, size_t length, int *error, int encoding, bool std_strings)
Definition: fe-exec.c:3290

◆ PQescapeStringConn()

size_t PQescapeStringConn ( PGconn conn,
char *  to,
const char *  from,
size_t  length,
int *  error 
)

Definition at line 3365 of file fe-exec.c.

References pg_conn::client_encoding, PQescapeStringInternal(), and pg_conn::std_strings.

Referenced by appendStringLiteralConn(), BaseBackup(), check_loadable_libraries(), and do_lo_import().

3368 {
3369  if (!conn)
3370  {
3371  /* force empty-string result */
3372  *to = '\0';
3373  if (error)
3374  *error = 1;
3375  return 0;
3376  }
3377  return PQescapeStringInternal(conn, to, from, length, error,
3378  conn->client_encoding,
3379  conn->std_strings);
3380 }
int length(const List *list)
Definition: list.c:1333
static void error(void)
Definition: sql-dyntest.c:147
bool std_strings
Definition: libpq-int.h:424
static size_t PQescapeStringInternal(PGconn *conn, char *to, const char *from, size_t length, int *error, int encoding, bool std_strings)
Definition: fe-exec.c:3290
int client_encoding
Definition: libpq-int.h:423

◆ PQexec()

PGresult* PQexec ( PGconn conn,
const char *  query 
)

Definition at line 1897 of file fe-exec.c.

References PQexecFinish(), PQexecStart(), and PQsendQuery().

Referenced by _doSetSessionAuth(), _doSetWithOids(), _selectOutputSchema(), _selectTablespace(), check_loadable_libraries(), check_prepare_conn(), CreateReplicationSlot(), dblink_close(), dblink_exec(), dblink_fetch(), dblink_open(), deallocate_one(), DescribeQuery(), DropReplicationSlot(), ecpg_autostart_transaction(), ecpg_execute(), ecpg_is_type_an_array(), ECPGsetcommit(), ECPGtrans(), ExecQueryUsingCursor(), executeCommand(), executeMaintenanceCommand(), executeQuery(), executeQueryOrDie(), ExecuteSqlCommand(), ExecuteSqlQuery(), ExecuteSqlStatement(), executeStatement(), get_create_object_cmd(), GetConnection(), initGenerateData(), libpq_executeFileMap(), libpqConnect(), libpqProcessFileList(), lo_initialize(), lockTableForWorker(), lookup_object_oid(), main(), pgfdw_xact_callback(), PQencryptPasswordConn(), PQsetClientEncoding(), PSQLexec(), PSQLexecWatch(), ReceiveXlogStream(), RetrieveDataDirCreatePerm(), RetrieveWalSegSize(), run_permutation(), run_simple_query(), RunIdentifySystem(), SendQuery(), sql_conn(), sql_exec(), StreamLogicalLog(), tryExecuteStatement(), and vacuumlo().

1898 {
1899  if (!PQexecStart(conn))
1900  return NULL;
1901  if (!PQsendQuery(conn, query))
1902  return NULL;
1903  return PQexecFinish(conn);
1904 }
int PQsendQuery(PGconn *conn, const char *query)
Definition: fe-exec.c:1183
static PGresult * PQexecFinish(PGconn *conn)
Definition: fe-exec.c:2053
static bool PQexecStart(PGconn *conn)
Definition: fe-exec.c:1979

◆ PQexecParams()

PGresult* PQexecParams ( PGconn conn,
const char *  command,
int  nParams,
const Oid paramTypes,
const char *const *  paramValues,
const int *  paramLengths,
const int *  paramFormats,
int  resultFormat 
)

Definition at line 1911 of file fe-exec.c.

References PQexecFinish(), PQexecStart(), and PQsendQueryParams().

Referenced by ecpg_execute(), libpqGetFile(), and main().

1919 {
1920  if (!PQexecStart(conn))
1921  return NULL;
1922  if (!PQsendQueryParams(conn, command,
1923  nParams, paramTypes, paramValues, paramLengths,
1924  paramFormats, resultFormat))
1925  return NULL;
1926  return PQexecFinish(conn);
1927 }
int PQsendQueryParams(PGconn *conn, const char *command, int nParams, const Oid *paramTypes, const char *const *paramValues, const int *paramLengths, const int *paramFormats, int resultFormat)
Definition: fe-exec.c:1234
static PGresult * PQexecFinish(PGconn *conn)
Definition: fe-exec.c:2053
static bool PQexecStart(PGconn *conn)
Definition: fe-exec.c:1979

◆ PQexecPrepared()

PGresult* PQexecPrepared ( PGconn conn,
const char *  stmtName,
int  nParams,
const char *const *  paramValues,
const int *  paramLengths,
const int *  paramFormats,
int  resultFormat 
)

Definition at line 1958 of file fe-exec.c.

References PQexecFinish(), PQexecStart(), and PQsendQueryPrepared().

Referenced by ecpg_execute(), and try_complete_step().

1965 {
1966  if (!PQexecStart(conn))
1967  return NULL;
1968  if (!PQsendQueryPrepared(conn, stmtName,
1969  nParams, paramValues, paramLengths,
1970  paramFormats, resultFormat))
1971  return NULL;
1972  return PQexecFinish(conn);
1973 }
static PGresult * PQexecFinish(PGconn *conn)
Definition: fe-exec.c:2053
int PQsendQueryPrepared(PGconn *conn, const char *stmtName, int nParams, const char *const *paramValues, const int *paramLengths, const int *paramFormats, int resultFormat)
Definition: fe-exec.c:1376
static bool PQexecStart(PGconn *conn)
Definition: fe-exec.c:1979

◆ PQfformat()

int PQfformat ( const PGresult res,
int  field_num 
)

Definition at line 2951 of file fe-exec.c.

References pg_result::attDescs, check_field_number(), and pgresAttDesc::format.

Referenced by ecpg_get_data(), ecpg_store_result(), and receiveFileChunks().

2952 {
2953  if (!check_field_number(res, field_num))
2954  return 0;
2955  if (res->attDescs)
2956  return res->attDescs[field_num].format;
2957  else
2958  return 0;
2959 }
PGresAttDesc * attDescs
Definition: libpq-int.h:171
static int check_field_number(const PGresult *res, int field_num)
Definition: fe-exec.c:2753

◆ PQfinish()

void PQfinish ( PGconn conn)

Definition at line 3638 of file fe-connect.c.

References closePGconn(), and freePGconn().

Referenced by _connectDB(), appendQualifiedRelation(), BaseBackup(), check_for_isn_and_int8_passing_mismatch(), check_for_jsonb_9_4_usage(), check_for_pg_role_prefix(), check_for_prepared_transactions(), check_for_reg_data_type_usage(), check_is_install_user(), check_loadable_libraries(), check_proper_datallowconn(), CheckConnection(), cluster_all_databases(), cluster_one_database(), connect_pg_server(), connectDatabase(), ConnectDatabase(), connectToServer(), createNewConnection(), dblink_connect(), dblink_disconnect(), dblink_exec(), dblink_get_conn(), dblink_record_internal(), dblink_security_check(), disconnect_and_exit(), disconnect_pg_server(), DisconnectDatabase(), do_connect(), doConnect(), dumpTablespaces(), ecpg_finish(), executeCommand(), executeQuery(), executeQueryOrDie(), exit_nicely(), finishCon(), get_db_infos(), get_loadable_libraries(), get_rel_infos(), get_tablespace_paths(), GetConnection(), libpqrcv_disconnect(), LogStreamerMain(), main(), new_9_0_populate_pg_largeobject_metadata(), old_9_3_check_for_line_data_type_usage(), old_9_6_check_for_unknown_data_type_usage(), old_9_6_invalidate_hash_indexes(), PQping(), PQpingParams(), ReconnectToServer(), reindex_all_databases(), reindex_one_database(), reindex_system_catalogs(), run_vacuum_command(), runInitSteps(), set_frozenxids(), sql_conn(), sql_exec(), start_postmaster(), StreamLog(), StreamLogicalLog(), vacuum_all_databases(), and vacuumlo().

3639 {
3640  if (conn)
3641  {
3642  closePGconn(conn);
3643  freePGconn(conn);
3644  }
3645 }
static void closePGconn(PGconn *conn)
Definition: fe-connect.c:3585
static void freePGconn(PGconn *conn)
Definition: fe-connect.c:3409

◆ PQflush()

int PQflush ( PGconn conn)

Definition at line 3238 of file fe-exec.c.

References pqFlush().

Referenced by CheckCopyStreamStop(), HandleEndOfCopyStream(), libpqrcv_endstreaming(), libpqrcv_send(), prepareToTerminate(), ProcessXLogDataMsg(), and sendFeedback().

3239 {
3240  return pqFlush(conn);
3241 }
int pqFlush(PGconn *conn)
Definition: fe-misc.c:961

◆ PQfmod()

int PQfmod ( const PGresult res,
int  field_num 
)

Definition at line 2984 of file fe-exec.c.

References pg_result::attDescs, pgresAttDesc::atttypmod, and check_field_number().

Referenced by DescribeQuery(), and ECPGget_desc().

2985 {
2986  if (!check_field_number(res, field_num))
2987  return 0;
2988  if (res->attDescs)
2989  return res->attDescs[field_num].atttypmod;
2990  else
2991  return 0;
2992 }
PGresAttDesc * attDescs
Definition: libpq-int.h:171
int atttypmod
Definition: libpq-fe.h:243
static int check_field_number(const PGresult *res, int field_num)
Definition: fe-exec.c:2753

◆ PQfn()

PGresult* PQfn ( PGconn conn,
int  fnid,
int *  result_buf,
int *  result_len,
int  result_is_int,
const PQArgBlock args,
int  nargs 
)

Definition at line 2607 of file fe-exec.c.

References pg_conn::asyncStatus, pg_conn::errorMessage, libpq_gettext, PG_PROTOCOL_MAJOR, PGASYNC_IDLE, PGINVALID_SOCKET, pqFunctionCall2(), pqFunctionCall3(), printfPQExpBuffer(), pg_conn::pversion, resetPQExpBuffer(), pg_conn::result, and pg_conn::sock.

Referenced by lo_close(), lo_creat(), lo_create(), lo_lseek(), lo_lseek64(), lo_open(), lo_read(), lo_tell(), lo_tell64(), lo_truncate(), lo_truncate64(), lo_unlink(), and lo_write().

2614 {
2615  *result_len = 0;
2616 
2617  if (!conn)
2618  return NULL;
2619 
2620  /* clear the error string */
2622 
2623  if (conn->sock == PGINVALID_SOCKET || conn->asyncStatus != PGASYNC_IDLE ||
2624  conn->result != NULL)
2625  {
2627  libpq_gettext("connection in wrong state\n"));
2628  return NULL;
2629  }
2630 
2631  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2632  return pqFunctionCall3(conn, fnid,
2633  result_buf, result_len,
2634  result_is_int,
2635