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, CONNECTION_GSS_STARTUP,
  CONNECTION_CHECK_TARGET
}
 
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, PQERRORS_SQLSTATE }
 
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 * PQhostaddr (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)
 
int PQgssEncInUse (PGconn *conn)
 
void * PQgetgssctx (PGconn *conn)
 
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)
 
size_t PQresultMemorySize (const PGresult *res)
 
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 PrintAttNames, int TerseOutput, int colWidth)
 
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 518 of file libpq-fe.h.

◆ PQnoPasswordSupplied

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

Definition at line 522 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 272 of file libpq-fe.h.

Referenced by main().

Typedef Documentation

◆ PGcancel

typedef struct pg_cancel PGcancel

Definition at line 156 of file libpq-fe.h.

◆ PGconn

typedef struct pg_conn PGconn

Definition at line 143 of file libpq-fe.h.

◆ PGnotify

typedef struct pgNotify PGnotify

◆ PGresAttDesc

typedef struct pgresAttDesc PGresAttDesc

◆ PGresult

typedef struct pg_result PGresult

Definition at line 150 of file libpq-fe.h.

◆ pgthreadlock_t

typedef void(* pgthreadlock_t) (int acquire)

Definition at line 384 of file libpq-fe.h.

◆ pqbool

typedef char pqbool

Definition at line 178 of file libpq-fe.h.

◆ PQconninfoOption

◆ PQnoticeProcessor

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

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

◆ PQnoticeReceiver

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

Definition at line 174 of file libpq-fe.h.

◆ PQprintOpt

typedef struct _PQprintOpt 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 
CONNECTION_GSS_STARTUP 
CONNECTION_CHECK_TARGET 

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. */
70  CONNECTION_GSS_STARTUP, /* Negotiating GSSAPI. */
71  CONNECTION_CHECK_TARGET /* Check if we have a proper target connection */
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 84 of file libpq-fe.h.

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

◆ PGContextVisibility

Enumerator
PQSHOW_CONTEXT_NEVER 
PQSHOW_CONTEXT_ERRORS 
PQSHOW_CONTEXT_ALWAYS 

Definition at line 120 of file libpq-fe.h.

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

◆ PGPing

enum PGPing
Enumerator
PQPING_OK 
PQPING_REJECT 
PQPING_NO_RESPONSE 
PQPING_NO_ATTEMPT 

Definition at line 132 of file libpq-fe.h.

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

◆ PGTransactionStatusType

Enumerator
PQTRANS_IDLE 
PQTRANS_ACTIVE 
PQTRANS_INTRANS 
PQTRANS_INERROR 
PQTRANS_UNKNOWN 

Definition at line 103 of file libpq-fe.h.

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

◆ PGVerbosity

Enumerator
PQERRORS_TERSE 
PQERRORS_DEFAULT 
PQERRORS_VERBOSE 
PQERRORS_SQLSTATE 

Definition at line 112 of file libpq-fe.h.

113 {
114  PQERRORS_TERSE, /* single-line error messages */
115  PQERRORS_DEFAULT, /* recommended style */
116  PQERRORS_VERBOSE, /* all the facts, ma'am */
117  PQERRORS_SQLSTATE /* only error severity and SQLSTATE code */
118 } PGVerbosity;
PGVerbosity
Definition: libpq-fe.h:112

◆ PostgresPollingStatusType

Enumerator
PGRES_POLLING_FAILED 
PGRES_POLLING_READING 
PGRES_POLLING_WRITING 
PGRES_POLLING_OK 
PGRES_POLLING_ACTIVE 

Definition at line 74 of file libpq-fe.h.

75 {
77  PGRES_POLLING_READING, /* These two indicate that one may */
78  PGRES_POLLING_WRITING, /* use select before polling again. */
80  PGRES_POLLING_ACTIVE /* unused; keep for awhile for backwards
81  * compatibility */
PostgresPollingStatusType
Definition: libpq-fe.h:74

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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
Oid fn_lo_close
Definition: libpq-int.h:271
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int integer
Definition: libpq-fe.h:230
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, mode, 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 }
static PgChecksumMode mode
Definition: pg_checksums.c:61
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:2652
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
#define InvalidOid
Definition: postgres_ext.h:36
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
Oid fn_lo_creat
Definition: libpq-int.h:272
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int integer
Definition: libpq-fe.h:230
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:237
Oid fn_lo_create
Definition: libpq-int.h:273
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:2652
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
PQExpBufferData errorMessage
Definition: libpq-int.h:511
#define InvalidOid
Definition: postgres_ext.h:36
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
#define libpq_gettext(x)
Definition: libpq-int.h:790
int integer
Definition: libpq-fe.h:230
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, PG_STRERROR_R_BUFLEN, printfPQExpBuffer(), strerror_r, 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[PG_STRERROR_R_BUFLEN];
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  strerror_r(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  strerror_r(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) != 0 && result >= 0)
857  {
859  libpq_gettext("could not write to file \"%s\": %s\n"),
860  filename, strerror_r(errno, sebuf, sizeof(sebuf)));
861  result = -1;
862  }
863 
864  return result;
865 }
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:237
#define write(a, b, c)
Definition: win32.h:14
#define PG_STRERROR_R_BUFLEN
Definition: port.h:210
static int fd(const char *x, int i)
Definition: preproc-init.c:105
#define PG_BINARY
Definition: c.h:1216
#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:511
#define LO_BUFSIZE
Definition: fe-lobj.c:42
#define strerror_r
Definition: port.h:209
static char * filename
Definition: pg_dumpall.c:90
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:790

◆ 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:90

◆ 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:90

◆ 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:275
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int integer
Definition: libpq-fe.h:230
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:237
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
PG_INT64_TYPE pg_int64
Definition: postgres_ext.h:47
static pg_int64 lo_hton64(pg_int64 host64)
Definition: fe-lobj.c:1061
PQExpBufferData errorMessage
Definition: libpq-int.h:511
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
Oid fn_lo_lseek64
Definition: libpq-int.h:276
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int * ptr
Definition: libpq-fe.h:229
#define libpq_gettext(x)
Definition: libpq-int.h:790
int integer
Definition: libpq-fe.h:230
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, mode, 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 }
static PgChecksumMode mode
Definition: pg_checksums.c:61
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
Oid fn_lo_open
Definition: libpq-int.h:270
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int integer
Definition: libpq-fe.h:230
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:237
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
Oid fn_lo_read
Definition: libpq-int.h:281
static char * buf
Definition: pg_test_fsync.c:67
PQExpBufferData errorMessage
Definition: libpq-int.h:511
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
#define libpq_gettext(x)
Definition: libpq-int.h:790
int integer
Definition: libpq-fe.h:230
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
Oid fn_lo_tell
Definition: libpq-int.h:277
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int integer
Definition: libpq-fe.h:230
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:237
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
PG_INT64_TYPE pg_int64
Definition: postgres_ext.h:47
Oid fn_lo_tell64
Definition: libpq-int.h:278
PQExpBufferData errorMessage
Definition: libpq-int.h:511
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
#define libpq_gettext(x)
Definition: libpq-int.h:790
int integer
Definition: libpq-fe.h:230
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:237
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
Oid fn_lo_truncate
Definition: libpq-int.h:279
PQExpBufferData errorMessage
Definition: libpq-int.h:511
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
#define libpq_gettext(x)
Definition: libpq-int.h:790
int integer
Definition: libpq-fe.h:230
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:237
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
static pg_int64 lo_hton64(pg_int64 host64)
Definition: fe-lobj.c:1061
Oid fn_lo_truncate64
Definition: libpq-int.h:280
PQExpBufferData errorMessage
Definition: libpq-int.h:511
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int * ptr
Definition: libpq-fe.h:229
#define libpq_gettext(x)
Definition: libpq-int.h:790
int integer
Definition: libpq-fe.h:230
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:2652
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
Oid fn_lo_unlink
Definition: libpq-int.h:274
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int integer
Definition: libpq-fe.h:230
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, PQArgBlock::u, and unconstify.

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 *) unconstify(char *, 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:237
Oid fn_lo_write
Definition: libpq-int.h:282
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:2652
static int fd(const char *x, int i)
Definition: preproc-init.c:105
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
static char * buf
Definition: pg_test_fsync.c:67
#define unconstify(underlying_type, expr)
Definition: c.h:1188
PQExpBufferData errorMessage
Definition: libpq-int.h:511
void PQclear(PGresult *res)
Definition: fe-exec.c:694
union PQArgBlock::@163 u
int isint
Definition: libpq-fe.h:226
PGlobjfuncs * lobjfuncs
Definition: libpq-int.h:438
int * ptr
Definition: libpq-fe.h:229
#define libpq_gettext(x)
Definition: libpq-int.h:790
int integer
Definition: libpq-fe.h:230
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, fprintf, sort-test::key, 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:608
#define lengthof(array)
Definition: c.h:663
#define fprintf
Definition: port.h:196
#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:141
const char * name
Definition: encode.c:521
int errmsg(const char *fmt,...)
Definition: elog.c:822
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:41

◆ PQbackendPID()

int PQbackendPID ( const PGconn conn)

Definition at line 6643 of file fe-connect.c.

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

Referenced by get_prompt(), main(), and StartLogStreamer().

6644 {
6645  if (!conn || conn->status != CONNECTION_OK)
6646  return 0;
6647  return conn->be_pid;
6648 }
ConnStatusType status
Definition: libpq-int.h:385
int be_pid
Definition: libpq-int.h:431

◆ PQbinaryTuples()

int PQbinaryTuples ( const PGresult res)

Definition at line 2785 of file fe-exec.c.

References pg_result::binary.

Referenced by ProcessResult().

2786 {
2787  if (!res)
2788  return 0;
2789  return res->binary;
2790 }
int binary
Definition: libpq-int.h:179

◆ PQcancel()

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

Definition at line 4395 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(), DisconnectDatabase(), handle_sigint(), pgfdw_cancel_query(), setup_cancel_handler(), ShutdownWorkersHard(), sigTermHandler(), and try_complete_step().

4396 {
4397  if (!cancel)
4398  {
4399  strlcpy(errbuf, "PQcancel() -- no cancel object supplied", errbufsize);
4400  return false;
4401  }
4402 
4403  return internal_cancel(&cancel->raddr, cancel->be_pid, cancel->be_key,
4404  errbuf, errbufsize);
4405 }
static int internal_cancel(SockAddr *raddr, int be_pid, int be_key, char *errbuf, int errbufsize)
Definition: fe-connect.c:4291
int be_pid
Definition: libpq-int.h:524
int be_key
Definition: libpq-int.h:525
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
SockAddr raddr
Definition: libpq-int.h:523

◆ PQclear()

void PQclear ( PGresult res)

Definition at line 694 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(), _selectOutputSchema(), _selectTableAccessMethod(), _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_for_tables_with_oids(), 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(), do_lo_import(), do_lo_list(), do_sql_command(), 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(), execute_foreign_modify(), executeCommand(), executeMaintenanceCommand(), executeQueryOrDie(), ExecuteSqlCommand(), ExecuteSqlStatement(), executeStatement(), expand_dbname_patterns(), 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_parallel_object_list(), 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(), GetTableInfo(), getTables(), getTransforms(), getTriggers(), getTSConfigurations(), getTSDictionaries(), getTSParsers(), getTSTemplates(), getTypes(), handleCopyIn(), HandleEndOfCopyStream(), initGenerateDataClientSide(), 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(), listPartitionedTables(), 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(), materializeResult(), new_9_0_populate_pg_largeobject_metadata(), objectDescription(), old_11_check_for_sql_identifier_data_type_usage(), 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(), 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(), readCommandResponse(), receiveFileChunks(), ReceiveXlogStream(), ReconnectToServer(), reindex_all_databases(), RetrieveDataDirCreatePerm(), RetrieveWalSegSize(), run_permutation(), run_simple_command(), 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().

695 {
696  PGresult_data *block;
697  int i;
698 
699  if (!res)
700  return;
701 
702  for (i = 0; i < res->nEvents; i++)
703  {
704  /* only send DESTROY to successfully-initialized event procs */
705  if (res->events[i].resultInitialized)
706  {
708 
709  evt.result = res;
710  (void) res->events[i].proc(PGEVT_RESULTDESTROY, &evt,
711  res->events[i].passThrough);
712  }
713  free(res->events[i].name);
714  }
715 
716  if (res->events)
717  free(res->events);
718 
719  /* Free all the subsidiary blocks */
720  while ((block = res->curBlock) != NULL)
721  {
722  res->curBlock = block->next;
723  free(block);
724  }
725 
726  /* Free the top-level tuple pointer array */
727  if (res->tuples)
728  free(res->tuples);
729 
730  /* zero out the pointer fields to catch programming errors */
731  res->attDescs = NULL;
732  res->tuples = NULL;
733  res->paramDescs = NULL;
734  res->errFields = NULL;
735  res->events = NULL;
736  res->nEvents = 0;
737  /* res->curBlock was zeroed out earlier */
738 
739  /* Free the PGresult structure itself */
740  free(res);
741 }
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)

◆ PQcmdStatus()

char* PQcmdStatus ( PGresult res)

Definition at line 3040 of file fe-exec.c.

References pg_result::cmdStatus.

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

3041 {
3042  if (!res)
3043  return NULL;
3044  return res->cmdStatus;
3045 }
char cmdStatus[CMDSTATUS_LEN]
Definition: libpq-int.h:178

◆ PQcmdTuples()

char* PQcmdTuples ( PGresult res)

Definition at line 3110 of file fe-exec.c.

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

Referenced by ecpg_process_output(), execute_dml_stmt(), execute_foreign_modify(), and SetResultVariables().

3111 {
3112  char *p,
3113  *c;
3114 
3115  if (!res)
3116  return "";
3117 
3118  if (strncmp(res->cmdStatus, "INSERT ", 7) == 0)
3119  {
3120  p = res->cmdStatus + 7;
3121  /* INSERT: skip oid and space */
3122  while (*p && *p != ' ')
3123  p++;
3124  if (*p == 0)
3125  goto interpret_error; /* no space? */
3126  p++;
3127  }
3128  else if (strncmp(res->cmdStatus, "SELECT ", 7) == 0 ||
3129  strncmp(res->cmdStatus, "DELETE ", 7) == 0 ||
3130  strncmp(res->cmdStatus, "UPDATE ", 7) == 0)
3131  p = res->cmdStatus + 7;
3132  else if (strncmp(res->cmdStatus, "FETCH ", 6) == 0)
3133  p = res->cmdStatus + 6;
3134  else if (strncmp(res->cmdStatus, "MOVE ", 5) == 0 ||
3135  strncmp(res->cmdStatus, "COPY ", 5) == 0)
3136  p = res->cmdStatus + 5;
3137  else
3138  return "";
3139 
3140  /* check that we have an integer (at least one digit, nothing else) */
3141  for (c = p; *c; c++)
3142  {
3143  if (!isdigit((unsigned char) *c))
3144  goto interpret_error;
3145  }
3146  if (c == p)
3147  goto interpret_error;
3148 
3149  return p;
3150 
3151 interpret_error:
3153  "could not interpret result from server: %s",
3154  res->cmdStatus);
3155  return "";
3156 }
PGNoticeHooks noticeHooks
Definition: libpq-int.h:186
char * c
void pqInternalNotice(const PGNoticeHooks *hooks, const char *fmt,...)
Definition: fe-exec.c:871
char cmdStatus[CMDSTATUS_LEN]
Definition: libpq-int.h:178

◆ PQconndefaults()

PQconninfoOption* PQconndefaults ( void  )

Definition at line 1372 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().

1373 {
1374  PQExpBufferData errorBuf;
1375  PQconninfoOption *connOptions;
1376 
1377  /* We don't actually report any errors here, but callees want a buffer */
1378  initPQExpBuffer(&errorBuf);
1379  if (PQExpBufferDataBroken(errorBuf))
1380  return NULL; /* out of memory already :-( */
1381 
1382  connOptions = conninfo_init(&errorBuf);
1383  if (connOptions != NULL)
1384  {
1385  /* pass NULL errorBuf to ignore errors */
1386  if (!conninfo_add_defaults(connOptions, NULL))
1387  {
1388  PQconninfoFree(connOptions);
1389  connOptions = NULL;
1390  }
1391  }
1392 
1393  termPQExpBuffer(&errorBuf);
1394  return connOptions;
1395 }
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:131
static PQconninfoOption * conninfo_init(PQExpBuffer errorMessage)
Definition: fe-connect.c:5241
void PQconninfoFree(PQconninfoOption *connOptions)
Definition: fe-connect.c:6449
#define PQExpBufferDataBroken(buf)
Definition: pqexpbuffer.h:67
static bool conninfo_add_defaults(PQconninfoOption *options, PQExpBuffer errorMessage)
Definition: fe-connect.c:5677
void initPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:92

◆ PQconnectdb()

PGconn* PQconnectdb ( const char *  conninfo)

Definition at line 676 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().

677 {
678  PGconn *conn = PQconnectStart(conninfo);
679 
680  if (conn && conn->status != CONNECTION_BAD)
681  (void) connectDBComplete(conn);
682 
683  return conn;
684 }
PGconn * conn
Definition: streamutil.c:54
static int connectDBComplete(PGconn *conn)
Definition: fe-connect.c:2010
PGconn * PQconnectStart(const char *conninfo)
Definition: fe-connect.c:802
ConnStatusType status
Definition: libpq-int.h:385

◆ PQconnectdbParams()

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

Definition at line 620 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().

623 {
624  PGconn *conn = PQconnectStartParams(keywords, values, expand_dbname);
625 
626  if (conn && conn->status != CONNECTION_BAD)
627  (void) connectDBComplete(conn);
628 
629  return conn;
630 
631 }
PGconn * conn
Definition: streamutil.c:54
static int connectDBComplete(PGconn *conn)
Definition: fe-connect.c:2010
ConnStatusType status
Definition: libpq-int.h:385
static Datum values[MAXATTR]
Definition: bootstrap.c:167
PGconn * PQconnectStartParams(const char *const *keywords, const char *const *values, int expand_dbname)
Definition: fe-connect.c:723

◆ PQconnectionNeedsPassword()

int PQconnectionNeedsPassword ( const PGconn conn)

Definition at line 6651 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().

6652 {
6653  char *password;
6654 
6655  if (!conn)
6656  return false;
6657  password = PQpass(conn);
6658  if (conn->password_needed &&
6659  (password == NULL || password[0] == '\0'))
6660  return true;
6661  else
6662  return false;
6663 }
static char password[100]
Definition: streamutil.c:53
bool password_needed
Definition: libpq-int.h:414
char * PQpass(const PGconn *conn)
Definition: fe-connect.c:6483

◆ PQconnectionUsedPassword()

int PQconnectionUsedPassword ( const PGconn conn)

Definition at line 6666 of file fe-connect.c.

References pg_conn::password_needed.

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

6667 {
6668  if (!conn)
6669  return false;
6670  if (conn->password_needed)
6671  return true;
6672  else
6673  return false;
6674 }
bool password_needed
Definition: libpq-int.h:414

◆ PQconnectPoll()

PostgresPollingStatusType PQconnectPoll ( PGconn conn)

Definition at line 2192 of file fe-connect.c.

References SockAddr::addr, pg_conn::addr_cur, pg_conn::addrlist, pg_conn::addrlist_family, addrinfo::ai_addr, addrinfo::ai_addrlen, addrinfo::ai_family, addrinfo::ai_flags, addrinfo::ai_next, AI_NUMERICHOST, addrinfo::ai_socktype, appendPQExpBuffer(), appendPQExpBufferChar(), appendPQExpBufferStr(), pg_conn::appname, Assert, pg_conn::asyncStatus, AUTH_REQ_MD5, AUTH_REQ_OK, pg_conn::auth_req_received, CHT_HOST_ADDRESS, CHT_HOST_NAME, CHT_UNIX_SOCKET, connect, connectFailureMessage(), CONNECTION_AUTH_OK, CONNECTION_AWAITING_RESPONSE, CONNECTION_BAD, CONNECTION_CHECK_TARGET, CONNECTION_CHECK_WRITABLE, CONNECTION_CONSUME, CONNECTION_GSS_STARTUP, CONNECTION_MADE, CONNECTION_NEEDED, CONNECTION_OK, CONNECTION_SETENV, CONNECTION_SSL_STARTUP, CONNECTION_STARTED, connectNoDelay(), pg_conn::connhost, pg_conn::connip, PQExpBufferData::data, EINPROGRESS, EINTR, EnvironmentOptions, ERRCODE_APPNAME_UNKNOWN, pg_conn::errorMessage, EWOULDBLOCK, pg_conn::fbappname, free, gai_strerror, getHostaddr(), getpeereid(), pg_conn::gssencmode, 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, MAXPGPATH, MemSet, pg_conn::nconnhost, NEGOTIATE_GSS_CODE, NEGOTIATE_SSL_CODE, pg_conn::next_eo, NI_MAXHOST, parse_int_param(), PG_DIAG_SQLSTATE, pg_fe_sendauth(), pg_getaddrinfo_all(), pg_GSS_have_cred_cache(), pg_hton32, PG_PROTOCOL, PG_PROTOCOL_MAJOR, pg_set_noblock(), PG_STRERROR_R_BUFLEN, PGASYNC_BUSY, PGASYNC_IDLE, 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(), pqClearAsyncResult(), PQconsumeInput(), pqDropConnection(), pqDropServerData(), pqFlush(), pqGetc(), pqGetErrorNotice3(), pqGetInt(), pqGetpwuid(), PQgetResult(), pqGets_append(), PQgetvalue(), PQisBusy(), PQntuples(), pqPacketSend(), pqReadData(), PQresultErrorField(), PQresultStatus(), pqsecure_initialize(), pqsecure_open_client(), pqsecure_open_gss(), PQsendQuery(), pqSetenvPoll(), PQTRANS_IDLE, printfPQExpBuffer(), pg_conn::pversion, pg_conn::raddr, release_conn_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(), setTCPUserTimeout(), pg_conn::sigpipe_flag, pg_conn::sigpipe_so, snprintf, pg_conn::sock, SOCK_ERRNO, SOCK_STRERROR, socket, pg_conn::ssl_in_use, pg_conn::sslmode, pg_conn::status, STATUS_OK, strerror_r, pg_conn::sversion, pg_conn::target_session_attrs, termPQExpBuffer(), pg_conn::try_next_addr, pg_conn::try_next_host, pg_conn_host::type, UNIXSOCK_PATH, UNIXSOCK_PATH_BUFLEN, useKeepalives(), _internalPQconninfoOption::val, pg_conn::whichhost, and pg_conn::xactStatus.

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

2193 {
2194  bool reset_connection_state_machine = false;
2195  bool need_new_connection = false;
2196  PGresult *res;
2197  char sebuf[PG_STRERROR_R_BUFLEN];
2198  int optval;
2199  PQExpBufferData savedMessage;
2200 
2201  if (conn == NULL)
2202  return PGRES_POLLING_FAILED;
2203 
2204  /* Get the new data */
2205  switch (conn->status)
2206  {
2207  /*
2208  * We really shouldn't have been polled in these two cases, but we
2209  * can handle it.
2210  */
2211  case CONNECTION_BAD:
2212  return PGRES_POLLING_FAILED;
2213  case CONNECTION_OK:
2214  return PGRES_POLLING_OK;
2215 
2216  /* These are reading states */
2218  case CONNECTION_AUTH_OK:
2219  {
2220  /* Load waiting data */
2221  int n = pqReadData(conn);
2222 
2223  if (n < 0)
2224  goto error_return;
2225  if (n == 0)
2226  return PGRES_POLLING_READING;
2227 
2228  break;
2229  }
2230 
2231  /* These are writing states, so we just proceed. */
2232  case CONNECTION_STARTED:
2233  case CONNECTION_MADE:
2234  break;
2235 
2236  /* We allow pqSetenvPoll to decide whether to proceed. */
2237  case CONNECTION_SETENV:
2238  break;
2239 
2240  /* Special cases: proceed without waiting. */
2242  case CONNECTION_NEEDED:
2244  case CONNECTION_CONSUME:
2246  break;
2247 
2248  default:
2250  libpq_gettext(
2251  "invalid connection state, "
2252  "probably indicative of memory corruption\n"
2253  ));
2254  goto error_return;
2255  }
2256 
2257 
2258 keep_going: /* We will come back to here until there is
2259  * nothing left to do. */
2260 
2261  /* Time to advance to next address, or next host if no more addresses? */
2262  if (conn->try_next_addr)
2263  {
2264  if (conn->addr_cur && conn->addr_cur->ai_next)
2265  {
2266  conn->addr_cur = conn->addr_cur->ai_next;
2267  reset_connection_state_machine = true;
2268  }
2269  else
2270  conn->try_next_host = true;
2271  conn->try_next_addr = false;
2272  }
2273 
2274  /* Time to advance to next connhost[] entry? */
2275  if (conn->try_next_host)
2276  {
2277  pg_conn_host *ch;
2278  struct addrinfo hint;
2279  int thisport;
2280  int ret;
2281  char portstr[MAXPGPATH];
2282 
2283  if (conn->whichhost + 1 >= conn->nconnhost)
2284  {
2285  /*
2286  * Oops, no more hosts. An appropriate error message is already
2287  * set up, so just set the right status.
2288  */
2289  goto error_return;
2290  }
2291  conn->whichhost++;
2292 
2293  /* Drop any address info for previous host */
2294  release_conn_addrinfo(conn);
2295 
2296  /*
2297  * Look up info for the new host. On failure, log the problem in
2298  * conn->errorMessage, then loop around to try the next host. (Note
2299  * we don't clear try_next_host until we've succeeded.)
2300  */
2301  ch = &conn->connhost[conn->whichhost];
2302 
2303  /* Initialize hint structure */
2304  MemSet(&hint, 0, sizeof(hint));
2305  hint.ai_socktype = SOCK_STREAM;
2306  conn->addrlist_family = hint.ai_family = AF_UNSPEC;
2307 
2308  /* Figure out the port number we're going to use. */
2309  if (ch->port == NULL || ch->port[0] == '\0')
2310  thisport = DEF_PGPORT;
2311  else
2312  {
2313  if (!parse_int_param(ch->port, &thisport, conn, "port"))
2314  goto error_return;
2315 
2316  if (thisport < 1 || thisport > 65535)
2317  {
2319  libpq_gettext("invalid port number: \"%s\"\n"),
2320  ch->port);
2321  goto keep_going;
2322  }
2323  }
2324  snprintf(portstr, sizeof(portstr), "%d", thisport);
2325 
2326  /* Use pg_getaddrinfo_all() to resolve the address */
2327  switch (ch->type)
2328  {
2329  case CHT_HOST_NAME:
2330  ret = pg_getaddrinfo_all(ch->host, portstr, &hint,
2331  &conn->addrlist);
2332  if (ret || !conn->addrlist)
2333  {
2335  libpq_gettext("could not translate host name \"%s\" to address: %s\n"),
2336  ch->host, gai_strerror(ret));
2337  goto keep_going;
2338  }
2339  break;
2340 
2341  case CHT_HOST_ADDRESS:
2342  hint.ai_flags = AI_NUMERICHOST;
2343  ret = pg_getaddrinfo_all(ch->hostaddr, portstr, &hint,
2344  &conn->addrlist);
2345  if (ret || !conn->addrlist)
2346  {
2348  libpq_gettext("could not parse network address \"%s\": %s\n"),
2349  ch->hostaddr, gai_strerror(ret));
2350  goto keep_going;
2351  }
2352  break;
2353 
2354  case CHT_UNIX_SOCKET:
2355 #ifdef HAVE_UNIX_SOCKETS
2356  conn->addrlist_family = hint.ai_family = AF_UNIX;
2357  UNIXSOCK_PATH(portstr, thisport, ch->host);
2358  if (strlen(portstr) >= UNIXSOCK_PATH_BUFLEN)
2359  {
2361  libpq_gettext("Unix-domain socket path \"%s\" is too long (maximum %d bytes)\n"),
2362  portstr,
2363  (int) (UNIXSOCK_PATH_BUFLEN - 1));
2364  goto keep_going;
2365  }
2366 
2367  /*
2368  * NULL hostname tells pg_getaddrinfo_all to parse the service
2369  * name as a Unix-domain socket path.
2370  */
2371  ret = pg_getaddrinfo_all(NULL, portstr, &hint,
2372  &conn->addrlist);
2373  if (ret || !conn->addrlist)
2374  {
2376  libpq_gettext("could not translate Unix-domain socket path \"%s\" to address: %s\n"),
2377  portstr, gai_strerror(ret));
2378  goto keep_going;
2379  }
2380 #else
2381  Assert(false);
2382 #endif
2383  break;
2384  }
2385 
2386  /* OK, scan this addrlist for a working server address */
2387  conn->addr_cur = conn->addrlist;
2388  reset_connection_state_machine = true;
2389  conn->try_next_host = false;
2390  }
2391 
2392  /* Reset connection state machine? */
2393  if (reset_connection_state_machine)
2394  {
2395  /*
2396  * (Re) initialize our connection control variables for a set of
2397  * connection attempts to a single server address. These variables
2398  * must persist across individual connection attempts, but we must
2399  * reset them when we start to consider a new server.
2400  */
2401  conn->pversion = PG_PROTOCOL(3, 0);
2402  conn->send_appname = true;
2403 #ifdef USE_SSL
2404  /* initialize these values based on SSL mode */
2405  conn->allow_ssl_try = (conn->sslmode[0] != 'd'); /* "disable" */
2406  conn->wait_ssl_try = (conn->sslmode[0] == 'a'); /* "allow" */
2407 #endif
2408 
2409  reset_connection_state_machine = false;
2410  need_new_connection = true;
2411  }
2412 
2413  /* Force a new connection (perhaps to the same server as before)? */
2414  if (need_new_connection)
2415  {
2416  /* Drop any existing connection */
2417  pqDropConnection(conn, true);
2418 
2419  /* Reset all state obtained from old server */
2420  pqDropServerData(conn);
2421 
2422  /* Drop any PGresult we might have, too */
2423  conn->asyncStatus = PGASYNC_IDLE;
2424  conn->xactStatus = PQTRANS_IDLE;
2425  pqClearAsyncResult(conn);
2426 
2427  /* Reset conn->status to put the state machine in the right state */
2428  conn->status = CONNECTION_NEEDED;
2429 
2430  need_new_connection = false;
2431  }
2432 
2433  /* Now try to advance the state machine for this connection */
2434  switch (conn->status)
2435  {
2436  case CONNECTION_NEEDED:
2437  {
2438  /*
2439  * Try to initiate a connection to one of the addresses
2440  * returned by pg_getaddrinfo_all(). conn->addr_cur is the
2441  * next one to try.
2442  *
2443  * The extra level of braces here is historical. It's not
2444  * worth reindenting this whole switch case to remove 'em.
2445  */
2446  {
2447  struct addrinfo *addr_cur = conn->addr_cur;
2448  char host_addr[NI_MAXHOST];
2449 
2450  /*
2451  * Advance to next possible host, if we've tried all of
2452  * the addresses for the current host.
2453  */
2454  if (addr_cur == NULL)
2455  {
2456  conn->try_next_host = true;
2457  goto keep_going;
2458  }
2459 
2460  /* Remember current address for possible error msg */
2461  memcpy(&conn->raddr.addr, addr_cur->ai_addr,
2462  addr_cur->ai_addrlen);
2463  conn->raddr.salen = addr_cur->ai_addrlen;
2464 
2465  /* set connip */
2466  if (conn->connip != NULL)
2467  {
2468  free(conn->connip);
2469  conn->connip = NULL;
2470  }
2471 
2472  getHostaddr(conn, host_addr, NI_MAXHOST);
2473  if (strlen(host_addr) > 0)
2474  conn->connip = strdup(host_addr);
2475 
2476  /*
2477  * purposely ignore strdup failure; not a big problem if
2478  * it fails anyway.
2479  */
2480 
2481  conn->sock = socket(addr_cur->ai_family, SOCK_STREAM, 0);
2482  if (conn->sock == PGINVALID_SOCKET)
2483  {
2484  /*
2485  * Silently ignore socket() failure if we have more
2486  * addresses to try; this reduces useless chatter in
2487  * cases where the address list includes both IPv4 and
2488  * IPv6 but kernel only accepts one family.
2489  */
2490  if (addr_cur->ai_next != NULL ||
2491  conn->whichhost + 1 < conn->nconnhost)
2492  {
2493  conn->try_next_addr = true;
2494  goto keep_going;
2495  }
2497  libpq_gettext("could not create socket: %s\n"),
2498  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2499  goto error_return;
2500  }
2501 
2502  /*
2503  * Select socket options: no delay of outgoing data for
2504  * TCP sockets, nonblock mode, close-on-exec. Try the
2505  * next address if any of this fails.
2506  */
2507  if (!IS_AF_UNIX(addr_cur->ai_family))
2508  {
2509  if (!connectNoDelay(conn))
2510  {
2511  /* error message already created */
2512  conn->try_next_addr = true;
2513  goto keep_going;
2514  }
2515  }
2516  if (!pg_set_noblock(conn->sock))
2517  {
2519  libpq_gettext("could not set socket to nonblocking mode: %s\n"),
2520  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2521  conn->try_next_addr = true;
2522  goto keep_going;
2523  }
2524 
2525 #ifdef F_SETFD
2526  if (fcntl(conn->sock, F_SETFD, FD_CLOEXEC) == -1)
2527  {
2529  libpq_gettext("could not set socket to close-on-exec mode: %s\n"),
2530  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2531  conn->try_next_addr = true;
2532  goto keep_going;
2533  }
2534 #endif /* F_SETFD */
2535 
2536  if (!IS_AF_UNIX(addr_cur->ai_family))
2537  {
2538 #ifndef WIN32
2539  int on = 1;
2540 #endif
2541  int usekeepalives = useKeepalives(conn);
2542  int err = 0;
2543 
2544  if (usekeepalives < 0)
2545  {
2547  libpq_gettext("keepalives parameter must be an integer\n"));
2548  err = 1;
2549  }
2550  else if (usekeepalives == 0)
2551  {
2552  /* Do nothing */
2553  }
2554 #ifndef WIN32
2555  else if (setsockopt(conn->sock,
2556  SOL_SOCKET, SO_KEEPALIVE,
2557  (char *) &on, sizeof(on)) < 0)
2558  {
2560  libpq_gettext("setsockopt(%s) failed: %s\n"),
2561  "SO_KEEPALIVE",
2562  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2563  err = 1;
2564  }
2565  else if (!setKeepalivesIdle(conn)
2566  || !setKeepalivesInterval(conn)
2567  || !setKeepalivesCount(conn))
2568  err = 1;
2569 #else /* WIN32 */
2570 #ifdef SIO_KEEPALIVE_VALS
2571  else if (!setKeepalivesWin32(conn))
2572  err = 1;
2573 #endif /* SIO_KEEPALIVE_VALS */
2574 #endif /* WIN32 */
2575  else if (!setTCPUserTimeout(conn))
2576  err = 1;
2577 
2578  if (err)
2579  {
2580  conn->try_next_addr = true;
2581  goto keep_going;
2582  }
2583  }
2584 
2585  /*----------
2586  * We have three methods of blocking SIGPIPE during
2587  * send() calls to this socket:
2588  *
2589  * - setsockopt(sock, SO_NOSIGPIPE)
2590  * - send(sock, ..., MSG_NOSIGNAL)
2591  * - setting the signal mask to SIG_IGN during send()
2592  *
2593  * The third method requires three syscalls per send,
2594  * so we prefer either of the first two, but they are
2595  * less portable. The state is tracked in the following
2596  * members of PGconn:
2597  *
2598  * conn->sigpipe_so - we have set up SO_NOSIGPIPE
2599  * conn->sigpipe_flag - we're specifying MSG_NOSIGNAL
2600  *
2601  * If we can use SO_NOSIGPIPE, then set sigpipe_so here
2602  * and we're done. Otherwise, set sigpipe_flag so that
2603  * we will try MSG_NOSIGNAL on sends. If we get an error
2604  * with MSG_NOSIGNAL, we'll clear that flag and revert to
2605  * signal masking.
2606  *----------
2607  */
2608  conn->sigpipe_so = false;
2609 #ifdef MSG_NOSIGNAL
2610  conn->sigpipe_flag = true;
2611 #else
2612  conn->sigpipe_flag = false;
2613 #endif /* MSG_NOSIGNAL */
2614 
2615 #ifdef SO_NOSIGPIPE
2616  optval = 1;
2617  if (setsockopt(conn->sock, SOL_SOCKET, SO_NOSIGPIPE,
2618  (char *) &optval, sizeof(optval)) == 0)
2619  {
2620  conn->sigpipe_so = true;
2621  conn->sigpipe_flag = false;
2622  }
2623 #endif /* SO_NOSIGPIPE */
2624 
2625  /*
2626  * Start/make connection. This should not block, since we
2627  * are in nonblock mode. If it does, well, too bad.
2628  */
2629  if (connect(conn->sock, addr_cur->ai_addr,
2630  addr_cur->ai_addrlen) < 0)
2631  {
2632  if (SOCK_ERRNO == EINPROGRESS ||
2633 #ifdef WIN32
2634  SOCK_ERRNO == EWOULDBLOCK ||
2635 #endif
2636  SOCK_ERRNO == EINTR)
2637  {
2638  /*
2639  * This is fine - we're in non-blocking mode, and
2640  * the connection is in progress. Tell caller to
2641  * wait for write-ready on socket.
2642  */
2643  conn->status = CONNECTION_STARTED;
2644  return PGRES_POLLING_WRITING;
2645  }
2646  /* otherwise, trouble */
2647  }
2648  else
2649  {
2650  /*
2651  * Hm, we're connected already --- seems the "nonblock
2652  * connection" wasn't. Advance the state machine and
2653  * go do the next stuff.
2654  */
2655  conn->status = CONNECTION_STARTED;
2656  goto keep_going;
2657  }
2658 
2659  /*
2660  * This connection failed. Add the error report to
2661  * conn->errorMessage, then try the next address if any.
2662  */
2664  conn->try_next_addr = true;
2665  goto keep_going;
2666  }
2667  }
2668 
2669  case CONNECTION_STARTED:
2670  {
2671  ACCEPT_TYPE_ARG3 optlen = sizeof(optval);
2672 
2673  /*
2674  * Write ready, since we've made it here, so the connection
2675  * has been made ... or has failed.
2676  */
2677 
2678  /*
2679  * Now check (using getsockopt) that there is not an error
2680  * state waiting for us on the socket.
2681  */
2682 
2683  if (getsockopt(conn->sock, SOL_SOCKET, SO_ERROR,
2684  (char *) &optval, &optlen) == -1)
2685  {
2687  libpq_gettext("could not get socket error status: %s\n"),
2688  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2689  goto error_return;
2690  }
2691  else if (optval != 0)
2692  {
2693  /*
2694  * When using a nonblocking connect, we will typically see
2695  * connect failures at this point, so provide a friendly
2696  * error message.
2697  */
2698  connectFailureMessage(conn, optval);
2699 
2700  /*
2701  * Try the next address if any, just as in the case where
2702  * connect() returned failure immediately.
2703  */
2704  conn->try_next_addr = true;
2705  goto keep_going;
2706  }
2707 
2708  /* Fill in the client address */
2709  conn->laddr.salen = sizeof(conn->laddr.addr);
2710  if (getsockname(conn->sock,
2711  (struct sockaddr *) &conn->laddr.addr,
2712  &conn->laddr.salen) < 0)
2713  {
2715  libpq_gettext("could not get client address from socket: %s\n"),
2716  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2717  goto error_return;
2718  }
2719 
2720  /*
2721  * Make sure we can write before advancing to next step.
2722  */
2723  conn->status = CONNECTION_MADE;
2724  return PGRES_POLLING_WRITING;
2725  }
2726 
2727  case CONNECTION_MADE:
2728  {
2729  char *startpacket;
2730  int packetlen;
2731 
2732 #ifdef HAVE_UNIX_SOCKETS
2733 
2734  /*
2735  * Implement requirepeer check, if requested and it's a
2736  * Unix-domain socket.
2737  */
2738  if (conn->requirepeer && conn->requirepeer[0] &&
2739  IS_AF_UNIX(conn->raddr.addr.ss_family))
2740  {
2741  char pwdbuf[BUFSIZ];
2742  struct passwd pass_buf;
2743  struct passwd *pass;
2744  int passerr;
2745  uid_t uid;
2746  gid_t gid;
2747 
2748  errno = 0;
2749  if (getpeereid(conn->sock, &uid, &gid) != 0)
2750  {
2751  /*
2752  * Provide special error message if getpeereid is a
2753  * stub
2754  */
2755  if (errno == ENOSYS)
2757  libpq_gettext("requirepeer parameter is not supported on this platform\n"));
2758  else
2760  libpq_gettext("could not get peer credentials: %s\n"),
2761  strerror_r(errno, sebuf, sizeof(sebuf)));
2762  goto error_return;
2763  }
2764 
2765  passerr = pqGetpwuid(uid, &pass_buf, pwdbuf, sizeof(pwdbuf), &pass);
2766  if (pass == NULL)
2767  {
2768  if (passerr != 0)
2770  libpq_gettext("could not look up local user ID %d: %s\n"),
2771  (int) uid,
2772  strerror_r(passerr, sebuf, sizeof(sebuf)));
2773  else
2775  libpq_gettext("local user with ID %d does not exist\n"),
2776  (int) uid);
2777  goto error_return;
2778  }
2779 
2780  if (strcmp(pass->pw_name, conn->requirepeer) != 0)
2781  {
2783  libpq_gettext("requirepeer specifies \"%s\", but actual peer user name is \"%s\"\n"),
2784  conn->requirepeer, pass->pw_name);
2785  goto error_return;
2786  }
2787  }
2788 #endif /* HAVE_UNIX_SOCKETS */
2789 
2790  if (IS_AF_UNIX(conn->raddr.addr.ss_family))
2791  {
2792  /* Don't request SSL or GSSAPI over Unix sockets */
2793 #ifdef USE_SSL
2794  conn->allow_ssl_try = false;
2795 #endif
2796 #ifdef ENABLE_GSS
2797  conn->try_gss = false;
2798 #endif
2799  }
2800 
2801 #ifdef ENABLE_GSS
2802 
2803  /*
2804  * If GSSAPI is enabled and we have a credential cache, try to
2805  * set it up before sending startup messages. If it's already
2806  * operating, don't try SSL and instead just build the startup
2807  * packet.
2808  */
2809  if (conn->try_gss && !conn->gctx)
2810  conn->try_gss = pg_GSS_have_cred_cache(&conn->gcred);
2811  if (conn->try_gss && !conn->gctx)
2812  {
2814 
2815  if (pqPacketSend(conn, 0, &pv, sizeof(pv)) != STATUS_OK)
2816  {
2818  libpq_gettext("could not send GSSAPI negotiation packet: %s\n"),
2819  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2820  goto error_return;
2821  }
2822 
2823  /* Ok, wait for response */
2825  return PGRES_POLLING_READING;
2826  }
2827  else if (!conn->gctx && conn->gssencmode[0] == 'r')
2828  {
2830  libpq_gettext("GSSAPI encryption required but was impossible (possibly no credential cache, no server support, or using a local socket)\n"));
2831  goto error_return;
2832  }
2833 #endif
2834 
2835 #ifdef USE_SSL
2836 
2837  /*
2838  * If SSL is enabled and we haven't already got it running,
2839  * request it instead of sending the startup message.
2840  */
2841  if (conn->allow_ssl_try && !conn->wait_ssl_try &&
2842  !conn->ssl_in_use)
2843  {
2844  ProtocolVersion pv;
2845 
2846  /*
2847  * Send the SSL request packet.
2848  *
2849  * Theoretically, this could block, but it really
2850  * shouldn't since we only got here if the socket is
2851  * write-ready.
2852  */
2854  if (pqPacketSend(conn, 0, &pv, sizeof(pv)) != STATUS_OK)
2855  {
2857  libpq_gettext("could not send SSL negotiation packet: %s\n"),
2858  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2859  goto error_return;
2860  }
2861  /* Ok, wait for response */
2863  return PGRES_POLLING_READING;
2864  }
2865 #endif /* USE_SSL */
2866 
2867  /*
2868  * Build the startup packet.
2869  */
2870  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2871  startpacket = pqBuildStartupPacket3(conn, &packetlen,
2873  else
2874  startpacket = pqBuildStartupPacket2(conn, &packetlen,
2876  if (!startpacket)
2877  {
2878  /*
2879  * will not appendbuffer here, since it's likely to also
2880  * run out of memory
2881  */
2883  libpq_gettext("out of memory\n"));
2884  goto error_return;
2885  }
2886 
2887  /*
2888  * Send the startup packet.
2889  *
2890  * Theoretically, this could block, but it really shouldn't
2891  * since we only got here if the socket is write-ready.
2892  */
2893  if (pqPacketSend(conn, 0, startpacket, packetlen) != STATUS_OK)
2894  {
2896  libpq_gettext("could not send startup packet: %s\n"),
2897  SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
2898  free(startpacket);
2899  goto error_return;
2900  }
2901 
2902  free(startpacket);
2903 
2905  return PGRES_POLLING_READING;
2906  }
2907 
2908  /*
2909  * Handle SSL negotiation: wait for postmaster messages and
2910  * respond as necessary.
2911  */
2913  {
2914 #ifdef USE_SSL
2915  PostgresPollingStatusType pollres;
2916 
2917  /*
2918  * On first time through, get the postmaster's response to our
2919  * SSL negotiation packet.
2920  */
2921  if (!conn->ssl_in_use)
2922  {
2923  /*
2924  * We use pqReadData here since it has the logic to
2925  * distinguish no-data-yet from connection closure. Since
2926  * conn->ssl isn't set, a plain recv() will occur.
2927  */
2928  char SSLok;
2929  int rdresult;
2930 
2931  rdresult = pqReadData(conn);
2932  if (rdresult < 0)
2933  {
2934  /* errorMessage is already filled in */
2935  goto error_return;
2936  }
2937  if (rdresult == 0)
2938  {
2939  /* caller failed to wait for data */
2940  return PGRES_POLLING_READING;
2941  }
2942  if (pqGetc(&SSLok, conn) < 0)
2943  {
2944  /* should not happen really */
2945  return PGRES_POLLING_READING;
2946  }
2947  if (SSLok == 'S')
2948  {
2949  /* mark byte consumed */
2950  conn->inStart = conn->inCursor;
2951  /* Set up global SSL state if required */
2952  if (pqsecure_initialize(conn) != 0)
2953  goto error_return;
2954  }
2955  else if (SSLok == 'N')
2956  {
2957  /* mark byte consumed */
2958  conn->inStart = conn->inCursor;
2959  /* OK to do without SSL? */
2960  if (conn->sslmode[0] == 'r' || /* "require" */
2961  conn->sslmode[0] == 'v') /* "verify-ca" or
2962  * "verify-full" */
2963  {
2964  /* Require SSL, but server does not want it */
2966  libpq_gettext("server does not support SSL, but SSL was required\n"));
2967  goto error_return;
2968  }
2969  /* Otherwise, proceed with normal startup */
2970  conn->allow_ssl_try = false;
2971  conn->status = CONNECTION_MADE;
2972  return PGRES_POLLING_WRITING;
2973  }
2974  else if (SSLok == 'E')
2975  {
2976  /*
2977  * Server failure of some sort, such as failure to
2978  * fork a backend process. We need to process and
2979  * report the error message, which might be formatted
2980  * according to either protocol 2 or protocol 3.
2981  * Rather than duplicate the code for that, we flip
2982  * into AWAITING_RESPONSE state and let the code there
2983  * deal with it. Note we have *not* consumed the "E"
2984  * byte here.
2985  */
2987  goto keep_going;
2988  }
2989  else
2990  {
2992  libpq_gettext("received invalid response to SSL negotiation: %c\n"),
2993  SSLok);
2994  goto error_return;
2995  }
2996  }
2997 
2998  /*
2999  * Begin or continue the SSL negotiation process.
3000  */
3001  pollres = pqsecure_open_client(conn);
3002  if (pollres == PGRES_POLLING_OK)
3003  {
3004  /* SSL handshake done, ready to send startup packet */
3005  conn->status = CONNECTION_MADE;
3006  return PGRES_POLLING_WRITING;
3007  }
3008  if (pollres == PGRES_POLLING_FAILED)
3009  {
3010  /*
3011  * Failed ... if sslmode is "prefer" then do a non-SSL
3012  * retry
3013  */
3014  if (conn->sslmode[0] == 'p' /* "prefer" */
3015  && conn->allow_ssl_try /* redundant? */
3016  && !conn->wait_ssl_try) /* redundant? */
3017  {
3018  /* only retry once */
3019  conn->allow_ssl_try = false;
3020  need_new_connection = true;
3021  goto keep_going;
3022  }
3023  /* Else it's a hard failure */
3024  goto error_return;
3025  }
3026  /* Else, return POLLING_READING or POLLING_WRITING status */
3027  return pollres;
3028 #else /* !USE_SSL */
3029  /* can't get here */
3030  goto error_return;
3031 #endif /* USE_SSL */
3032  }
3033 
3035  {
3036 #ifdef ENABLE_GSS
3037  PostgresPollingStatusType pollres;
3038 
3039  /*
3040  * If we haven't yet, get the postmaster's response to our
3041  * negotiation packet
3042  */
3043  if (conn->try_gss && !conn->gctx)
3044  {
3045  char gss_ok;
3046  int rdresult = pqReadData(conn);
3047 
3048  if (rdresult < 0)
3049  /* pqReadData fills in error message */
3050  goto error_return;
3051  else if (rdresult == 0)
3052  /* caller failed to wait for data */
3053  return PGRES_POLLING_READING;
3054  if (pqGetc(&gss_ok, conn) < 0)
3055  /* shouldn't happen... */
3056  return PGRES_POLLING_READING;
3057 
3058  if (gss_ok == 'E')
3059  {
3060  /*
3061  * Server failure of some sort. Assume it's a
3062  * protocol version support failure, and let's see if
3063  * we can't recover (if it's not, we'll get a better
3064  * error message on retry). Server gets fussy if we
3065  * don't hang up the socket, though.
3066  */
3067  conn->try_gss = false;
3068  pqDropConnection(conn, true);
3069  conn->status = CONNECTION_NEEDED;
3070  goto keep_going;
3071  }
3072 
3073  /* mark byte consumed */
3074  conn->inStart = conn->inCursor;
3075 
3076  if (gss_ok == 'N')
3077  {
3078  /* Server doesn't want GSSAPI; fall back if we can */
3079  if (conn->gssencmode[0] == 'r')
3080  {
3082  libpq_gettext("server doesn't support GSSAPI encryption, but it was required\n"));
3083  goto error_return;
3084  }
3085 
3086  conn->try_gss = false;
3087  conn->status = CONNECTION_MADE;
3088  return PGRES_POLLING_WRITING;
3089  }
3090  else if (gss_ok != 'G')
3091  {
3093  libpq_gettext("received invalid response to GSSAPI negotiation: %c\n"),
3094  gss_ok);
3095  goto error_return;
3096  }
3097  }
3098 
3099  /* Begin or continue GSSAPI negotiation */
3100  pollres = pqsecure_open_gss(conn);
3101  if (pollres == PGRES_POLLING_OK)
3102  {
3103  /* All set for startup packet */
3104  conn->status = CONNECTION_MADE;
3105  return PGRES_POLLING_WRITING;
3106  }
3107  else if (pollres == PGRES_POLLING_FAILED &&
3108  conn->gssencmode[0] == 'p')
3109  {
3110  /*
3111  * We failed, but we can retry on "prefer". Have to drop
3112  * the current connection to do so, though.
3113  */
3114  conn->try_gss = false;
3115  pqDropConnection(conn, true);
3116  conn->status = CONNECTION_NEEDED;
3117  goto keep_going;
3118  }
3119  return pollres;
3120 #else /* !ENABLE_GSS */
3121  /* unreachable */
3122  goto error_return;
3123 #endif /* ENABLE_GSS */
3124  }
3125 
3126  /*
3127  * Handle authentication exchange: wait for postmaster messages
3128  * and respond as necessary.
3129  */
3131  {
3132  char beresp;
3133  int msgLength;
3134  int avail;
3135  AuthRequest areq;
3136  int res;
3137 
3138  /*
3139  * Scan the message from current point (note that if we find
3140  * the message is incomplete, we will return without advancing
3141  * inStart, and resume here next time).
3142  */
3143  conn->inCursor = conn->inStart;
3144 
3145  /* Read type byte */
3146  if (pqGetc(&beresp, conn))
3147  {
3148  /* We'll come back when there is more data */
3149  return PGRES_POLLING_READING;
3150  }
3151 
3152  /*
3153  * Validate message type: we expect only an authentication
3154  * request or an error here. Anything else probably means
3155  * it's not Postgres on the other end at all.
3156  */
3157  if (!(beresp == 'R' || beresp == 'E'))
3158  {
3160  libpq_gettext(
3161  "expected authentication request from "
3162  "server, but received %c\n"),
3163  beresp);
3164  goto error_return;
3165  }
3166 
3167  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
3168  {
3169  /* Read message length word */
3170  if (pqGetInt(&msgLength, 4, conn))
3171  {
3172  /* We'll come back when there is more data */
3173  return PGRES_POLLING_READING;
3174  }
3175  }
3176  else
3177  {
3178  /* Set phony message length to disable checks below */
3179  msgLength = 8;
3180  }
3181 
3182  /*
3183  * Try to validate message length before using it.
3184  * Authentication requests can't be very large, although GSS
3185  * auth requests may not be that small. Errors can be a
3186  * little larger, but not huge. If we see a large apparent
3187  * length in an error, it means we're really talking to a
3188  * pre-3.0-protocol server; cope.
3189  */
3190  if (beresp == 'R' && (msgLength < 8 || msgLength > 2000))
3191  {
3193  libpq_gettext(
3194  "expected authentication request from "
3195  "server, but received %c\n"),
3196  beresp);
3197  goto error_return;
3198  }
3199 
3200  if (beresp == 'E' && (msgLength < 8 || msgLength > 30000))
3201  {
3202  /* Handle error from a pre-3.0 server */
3203  conn->inCursor = conn->inStart + 1; /* reread data */
3204  if (pqGets_append(&conn->errorMessage, conn))
3205  {
3206  /* We'll come back when there is more data */
3207  return PGRES_POLLING_READING;
3208  }
3209  /* OK, we read the message; mark data consumed */
3210  conn->inStart = conn->inCursor;
3211 
3212  /*
3213  * The postmaster typically won't end its message with a
3214  * newline, so add one to conform to libpq conventions.
3215  */
3216  appendPQExpBufferChar(&conn->errorMessage, '\n');
3217 
3218  /*
3219  * If we tried to open the connection in 3.0 protocol,
3220  * fall back to 2.0 protocol.
3221  */
3222  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
3223  {
3224  conn->pversion = PG_PROTOCOL(2, 0);
3225  need_new_connection = true;
3226  goto keep_going;
3227  }
3228 
3229  goto error_return;
3230  }
3231 
3232  /*
3233  * Can't process if message body isn't all here yet.
3234  *
3235  * (In protocol 2.0 case, we are assuming messages carry at
3236  * least 4 bytes of data.)
3237  */
3238  msgLength -= 4;
3239  avail = conn->inEnd - conn->inCursor;
3240  if (avail < msgLength)
3241  {
3242  /*
3243  * Before returning, try to enlarge the input buffer if
3244  * needed to hold the whole message; see notes in
3245  * pqParseInput3.
3246  */
3247  if (pqCheckInBufferSpace(conn->inCursor + (size_t) msgLength,
3248  conn))
3249  goto error_return;
3250  /* We'll come back when there is more data */
3251  return PGRES_POLLING_READING;
3252  }
3253 
3254  /* Handle errors. */
3255  if (beresp == 'E')
3256  {
3257  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
3258  {
3259  if (pqGetErrorNotice3(conn, true))
3260  {
3261  /* We'll come back when there is more data */
3262  return PGRES_POLLING_READING;
3263  }
3264  }
3265  else
3266  {
3267  if (pqGets_append(&conn->errorMessage, conn))
3268  {
3269  /* We'll come back when there is more data */
3270  return PGRES_POLLING_READING;
3271  }
3272  }
3273  /* OK, we read the message; mark data consumed */
3274  conn->inStart = conn->inCursor;
3275 
3276  /* Check to see if we should mention pgpassfile */
3277  pgpassfileWarning(conn);
3278 
3279 #ifdef ENABLE_GSS
3280 
3281  /*
3282  * If gssencmode is "prefer" and we're using GSSAPI, retry
3283  * without it.
3284  */
3285  if (conn->gssenc && conn->gssencmode[0] == 'p')
3286  {
3287  OM_uint32 minor;
3288 
3289  /* postmaster expects us to drop the connection */
3290  conn->try_gss = false;
3291  conn->gssenc = false;
3292  gss_delete_sec_context(&minor, &conn->gctx, NULL);
3293  pqDropConnection(conn, true);
3294  conn->status = CONNECTION_NEEDED;
3295  goto keep_going;
3296  }
3297 #endif
3298 
3299 #ifdef USE_SSL
3300 
3301  /*
3302  * if sslmode is "allow" and we haven't tried an SSL
3303  * connection already, then retry with an SSL connection
3304  */
3305  if (conn->sslmode[0] == 'a' /* "allow" */
3306  && !conn->ssl_in_use
3307  && conn->allow_ssl_try
3308  && conn->wait_ssl_try)
3309  {
3310  /* only retry once */
3311  conn->wait_ssl_try = false;
3312  need_new_connection = true;
3313  goto keep_going;
3314  }
3315 
3316  /*
3317  * if sslmode is "prefer" and we're in an SSL connection,
3318  * then do a non-SSL retry
3319  */
3320  if (conn->sslmode[0] == 'p' /* "prefer" */
3321  && conn->ssl_in_use
3322  && conn->allow_ssl_try /* redundant? */
3323  && !conn->wait_ssl_try) /* redundant? */
3324  {
3325  /* only retry once */
3326  conn->allow_ssl_try = false;
3327  need_new_connection = true;
3328  goto keep_going;
3329  }
3330 #endif
3331 
3332  goto error_return;
3333  }
3334 
3335  /* It is an authentication request. */
3336  conn->auth_req_received = true;
3337 
3338  /* Get the type of request. */
3339  if (pqGetInt((int *) &areq, 4, conn))
3340  {
3341  /* We'll come back when there are more data */
3342  return PGRES_POLLING_READING;
3343  }
3344  msgLength -= 4;
3345 
3346  /*
3347  * Ensure the password salt is in the input buffer, if it's an
3348  * MD5 request. All the other authentication methods that
3349  * contain extra data in the authentication request are only
3350  * supported in protocol version 3, in which case we already
3351  * read the whole message above.
3352  */
3353  if (areq == AUTH_REQ_MD5 && PG_PROTOCOL_MAJOR(conn->pversion) < 3)
3354  {
3355  msgLength += 4;
3356 
3357  avail = conn->inEnd - conn->inCursor;
3358  if (avail < 4)
3359  {
3360  /*
3361  * Before returning, try to enlarge the input buffer
3362  * if needed to hold the whole message; see notes in
3363  * pqParseInput3.
3364  */
3365  if (pqCheckInBufferSpace(conn->inCursor + (size_t) 4,
3366  conn))
3367  goto error_return;
3368  /* We'll come back when there is more data */
3369  return PGRES_POLLING_READING;
3370  }
3371  }
3372 
3373  /*
3374  * Process the rest of the authentication request message, and
3375  * respond to it if necessary.
3376  *
3377  * Note that conn->pghost must be non-NULL if we are going to
3378  * avoid the Kerberos code doing a hostname look-up.
3379  */
3380  res = pg_fe_sendauth(areq, msgLength, conn);
3381  conn->errorMessage.len = strlen(conn->errorMessage.data);
3382 
3383  /* OK, we have processed the message; mark data consumed */
3384  conn->inStart = conn->inCursor;
3385 
3386  if (res != STATUS_OK)
3387  goto error_return;
3388 
3389  /*
3390  * Just make sure that any data sent by pg_fe_sendauth is
3391  * flushed out. Although this theoretically could block, it
3392  * really shouldn't since we don't send large auth responses.
3393  */
3394  if (pqFlush(conn))
3395  goto error_return;
3396 
3397  if (areq == AUTH_REQ_OK)
3398  {
3399  /* We are done with authentication exchange */
3400  conn->status = CONNECTION_AUTH_OK;
3401 
3402  /*
3403  * Set asyncStatus so that PQgetResult will think that
3404  * what comes back next is the result of a query. See
3405  * below.
3406  */
3407  conn->asyncStatus = PGASYNC_BUSY;
3408  }
3409 
3410  /* Look to see if we have more data yet. */
3411  goto keep_going;
3412  }
3413 
3414  case CONNECTION_AUTH_OK:
3415  {
3416  /*
3417  * Now we expect to hear from the backend. A ReadyForQuery
3418  * message indicates that startup is successful, but we might
3419  * also get an Error message indicating failure. (Notice
3420  * messages indicating nonfatal warnings are also allowed by
3421  * the protocol, as are ParameterStatus and BackendKeyData
3422  * messages.) Easiest way to handle this is to let
3423  * PQgetResult() read the messages. We just have to fake it
3424  * out about the state of the connection, by setting
3425  * asyncStatus = PGASYNC_BUSY (done above).
3426  */
3427 
3428  if (PQisBusy(conn))
3429  return PGRES_POLLING_READING;
3430 
3431  res = PQgetResult(conn);
3432 
3433  /*
3434  * NULL return indicating we have gone to IDLE state is
3435  * expected
3436  */
3437  if (res)
3438  {
3439  if (res->resultStatus != PGRES_FATAL_ERROR)
3441  libpq_gettext("unexpected message from server during startup\n"));
3442  else if (conn->send_appname &&
3443  (conn->appname || conn->fbappname))
3444  {
3445  /*
3446  * If we tried to send application_name, check to see
3447  * if the error is about that --- pre-9.0 servers will
3448  * reject it at this stage of the process. If so,
3449  * close the connection and retry without sending
3450  * application_name. We could possibly get a false
3451  * SQLSTATE match here and retry uselessly, but there
3452  * seems no great harm in that; we'll just get the
3453  * same error again if it's unrelated.
3454  */
3455  const char *sqlstate;
3456 
3457  sqlstate = PQresultErrorField(res, PG_DIAG_SQLSTATE);
3458  if (sqlstate &&
3459  strcmp(sqlstate, ERRCODE_APPNAME_UNKNOWN) == 0)
3460  {
3461  PQclear(res);
3462  conn->send_appname = false;
3463  need_new_connection = true;
3464  goto keep_going;
3465  }
3466  }
3467 
3468  /*
3469  * if the resultStatus is FATAL, then conn->errorMessage
3470  * already has a copy of the error; needn't copy it back.
3471  * But add a newline if it's not there already, since
3472  * postmaster error messages may not have one.
3473  */
3474  if (conn->errorMessage.len <= 0 ||
3475  conn->errorMessage.data[conn->errorMessage.len - 1] != '\n')
3476  appendPQExpBufferChar(&conn->errorMessage, '\n');
3477  PQclear(res);
3478  goto error_return;
3479  }
3480 
3481  /* Fire up post-connection housekeeping if needed */
3482  if (PG_PROTOCOL_MAJOR(conn->pversion) < 3)
3483  {
3484  conn->status = CONNECTION_SETENV;
3486  conn->next_eo = EnvironmentOptions;
3487  return PGRES_POLLING_WRITING;
3488  }
3489 
3490  /* Almost there now ... */
3492  goto keep_going;
3493  }
3494 
3496  {
3497  /*
3498  * If a read-write connection is required, see if we have one.
3499  *
3500  * Servers before 7.4 lack the transaction_read_only GUC, but
3501  * by the same token they don't have any read-only mode, so we
3502  * may just skip the test in that case.
3503  */
3504  if (conn->sversion >= 70400 &&
3505  conn->target_session_attrs != NULL &&
3506  strcmp(conn->target_session_attrs, "read-write") == 0)
3507  {
3508  /*
3509  * Save existing error messages across the PQsendQuery
3510  * attempt. This is necessary because PQsendQuery is
3511  * going to reset conn->errorMessage, so we would lose
3512  * error messages related to previous hosts we have tried
3513  * and failed to connect to.
3514  */
3515  if (!saveErrorMessage(conn, &savedMessage))
3516  goto error_return;
3517 
3518  conn->status = CONNECTION_OK;
3519  if (!PQsendQuery(conn,
3520  "SHOW transaction_read_only"))
3521  {
3522  restoreErrorMessage(conn, &savedMessage);
3523  goto error_return;
3524  }
3526  restoreErrorMessage(conn, &savedMessage);
3527  return PGRES_POLLING_READING;
3528  }
3529 
3530  /* We can release the address list now. */
3531  release_conn_addrinfo(conn);
3532 
3533  /* We are open for business! */
3534  conn->status = CONNECTION_OK;
3535  return PGRES_POLLING_OK;
3536  }
3537 
3538  case CONNECTION_SETENV:
3539  {
3540  /*
3541  * Do post-connection housekeeping (only needed in protocol
3542  * 2.0).
3543  *
3544  * We pretend that the connection is OK for the duration of
3545  * these queries.
3546  */
3547  conn->status = CONNECTION_OK;
3548 
3549  switch (pqSetenvPoll(conn))
3550  {
3551  case PGRES_POLLING_OK: /* Success */
3552  break;
3553 
3554  case PGRES_POLLING_READING: /* Still going */
3555  conn->status = CONNECTION_SETENV;
3556  return PGRES_POLLING_READING;
3557 
3558  case PGRES_POLLING_WRITING: /* Still going */
3559  conn->status = CONNECTION_SETENV;
3560  return PGRES_POLLING_WRITING;
3561 
3562  default:
3563  goto error_return;
3564  }
3565 
3566  /* Almost there now ... */
3568  goto keep_going;
3569  }
3570 
3571  case CONNECTION_CONSUME:
3572  {
3573  conn->status = CONNECTION_OK;
3574  if (!PQconsumeInput(conn))
3575  goto error_return;
3576 
3577  if (PQisBusy(conn))
3578  {
3579  conn->status = CONNECTION_CONSUME;
3580  return PGRES_POLLING_READING;
3581  }
3582 
3583  /*
3584  * Call PQgetResult() again to consume NULL result.
3585  */
3586  res = PQgetResult(conn);
3587  if (res != NULL)
3588  {
3589  PQclear(res);
3590  conn->status = CONNECTION_CONSUME;
3591  goto keep_going;
3592  }
3593 
3594  /* We can release the address list now. */
3595  release_conn_addrinfo(conn);
3596 
3597  /* We are open for business! */
3598  conn->status = CONNECTION_OK;
3599  return PGRES_POLLING_OK;
3600  }
3602  {
3603  const char *displayed_host;
3604  const char *displayed_port;
3605 
3606  if (!saveErrorMessage(conn, &savedMessage))
3607  goto error_return;
3608 
3609  conn->status = CONNECTION_OK;
3610  if (!PQconsumeInput(conn))
3611  {
3612  restoreErrorMessage(conn, &savedMessage);
3613  goto error_return;
3614  }
3615 
3616  if (PQisBusy(conn))
3617  {
3619  restoreErrorMessage(conn, &savedMessage);
3620  return PGRES_POLLING_READING;
3621  }
3622 
3623  res = PQgetResult(conn);
3624  if (res && (PQresultStatus(res) == PGRES_TUPLES_OK) &&
3625  PQntuples(res) == 1)
3626  {
3627  char *val;
3628 
3629  val = PQgetvalue(res, 0, 0);
3630  if (strncmp(val, "on", 2) == 0)
3631  {
3632  /* Not writable; fail this connection. */
3633  PQclear(res);
3634  restoreErrorMessage(conn, &savedMessage);
3635 
3636  /* Append error report to conn->errorMessage. */
3637  if (conn->connhost[conn->whichhost].type == CHT_HOST_ADDRESS)
3638  displayed_host = conn->connhost[conn->whichhost].hostaddr;
3639  else
3640  displayed_host = conn->connhost[conn->whichhost].host;
3641  displayed_port = conn->connhost[conn->whichhost].port;
3642  if (displayed_port == NULL || displayed_port[0] == '\0')
3643  displayed_port = DEF_PGPORT_STR;
3644 
3646  libpq_gettext("could not make a writable "
3647  "connection to server "
3648  "\"%s:%s\"\n"),
3649  displayed_host, displayed_port);
3650 
3651  /* Close connection politely. */
3652  conn->status = CONNECTION_OK;
3653  sendTerminateConn(conn);
3654 
3655  /*
3656  * Try next host if any, but we don't want to consider
3657  * additional addresses for this host.
3658  */
3659  conn->try_next_host = true;
3660  goto keep_going;
3661  }
3662 
3663  /* Session is read-write, so we're good. */
3664  PQclear(res);
3665  termPQExpBuffer(&savedMessage);
3666 
3667  /*
3668  * Finish reading any remaining messages before being
3669  * considered as ready.
3670  */
3671  conn->status = CONNECTION_CONSUME;
3672  goto keep_going;
3673  }
3674 
3675  /*
3676  * Something went wrong with "SHOW transaction_read_only". We
3677  * should try next addresses.
3678  */
3679  if (res)
3680  PQclear(res);
3681  restoreErrorMessage(conn, &savedMessage);
3682 
3683  /* Append error report to conn->errorMessage. */
3684  if (conn->connhost[conn->whichhost].type == CHT_HOST_ADDRESS)
3685  displayed_host = conn->connhost[conn->whichhost].hostaddr;
3686  else
3687  displayed_host = conn->connhost[conn->whichhost].host;
3688  displayed_port = conn->connhost[conn->whichhost].port;
3689  if (displayed_port == NULL || displayed_port[0] == '\0')
3690  displayed_port = DEF_PGPORT_STR;
3692  libpq_gettext("test \"SHOW transaction_read_only\" failed "
3693  "on server \"%s:%s\"\n"),
3694  displayed_host, displayed_port);
3695 
3696  /* Close connection politely. */
3697  conn->status = CONNECTION_OK;
3698  sendTerminateConn(conn);
3699 
3700  /* Try next address */
3701  conn->try_next_addr = true;
3702  goto keep_going;
3703  }
3704 
3705  default:
3707  libpq_gettext("invalid connection state %d, "
3708  "probably indicative of memory corruption\n"),
3709  conn->status);
3710  goto error_return;
3711  }
3712 
3713  /* Unreachable */
3714 
3715 error_return:
3716 
3717  /*
3718  * We used to close the socket at this point, but that makes it awkward
3719  * for those above us if they wish to remove this socket from their own
3720  * records (an fd_set for example). We'll just have this socket closed
3721  * when PQfinish is called (which is compulsory even after an error, since
3722  * the connection structure must be freed).
3723  */
3724  conn->status = CONNECTION_BAD;
3725  return PGRES_POLLING_FAILED;
3726 }
int pqFlush(PGconn *conn)
Definition: fe-misc.c:997
bool sigpipe_flag
Definition: libpq-int.h:416
char * gssencmode
Definition: libpq-int.h:487
#define NEGOTIATE_GSS_CODE
Definition: pqcomm.h:206
int inEnd
Definition: libpq-int.h:445
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:237
#define UNIXSOCK_PATH(path, port, sockdir)
Definition: pqcomm.h:70
int inStart
Definition: libpq-int.h:443
static void release_conn_addrinfo(PGconn *conn)
Definition: fe-connect.c:4042
struct addrinfo * addr_cur
Definition: libpq-int.h:424
char * PQgetvalue(const PGresult *res, int tup_num, int field_num)
Definition: fe-exec.c:3163
static int connectNoDelay(PGconn *conn)
Definition: fe-connect.c:1539
int pg_fe_sendauth(AuthRequest areq, int payloadlen, PGconn *conn)
Definition: fe-auth.c:863
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:131
int getpeereid(int sock, uid_t *uid, gid_t *gid)
Definition: getpeereid.c:35
#define UNIXSOCK_PATH_BUFLEN
Definition: pqcomm.h:86
bool sigpipe_so
Definition: libpq-int.h:415
char * pqBuildStartupPacket2(PGconn *conn, int *packetlen, const PQEnvironmentOption *options)
void appendPQExpBufferStr(PQExpBuffer str, const char *data)
Definition: pqexpbuffer.c:369
#define AUTH_REQ_OK
Definition: pqcomm.h:165
int pqCheckInBufferSpace(size_t bytes_needed, PGconn *conn)
Definition: fe-misc.c:407
#define PG_STRERROR_R_BUFLEN
Definition: port.h:210
static void pgpassfileWarning(PGconn *conn)
Definition: fe-connect.c:7002
char * requirepeer
Definition: libpq-int.h:364
char * host
Definition: libpq-int.h:312
struct sockaddr_storage addr
Definition: pqcomm.h:64
static int setKeepalivesIdle(PGconn *conn)
Definition: fe-connect.c:1737
#define MemSet(start, val, len)
Definition: c.h:956
int pqGetInt(int *result, size_t bytes, PGconn *conn)
Definition: fe-misc.c:266
static bool saveErrorMessage(PGconn *conn, PQExpBuffer savedMessage)
Definition: fe-connect.c:2129
#define connect(s, name, namelen)
Definition: win32_port.h:435
static void sendTerminateConn(PGconn *conn)
Definition: fe-connect.c:4057
void pqDropConnection(PGconn *conn, bool flushInput)
Definition: fe-connect.c:453
#define PG_PROTOCOL_MAJOR(v)
Definition: pqcomm.h:104
#define AI_NUMERICHOST
Definition: getaddrinfo.h:73
int PQntuples(const PGresult *res)
Definition: fe-exec.c:2769
#define PG_DIAG_SQLSTATE
Definition: postgres_ext.h:57
uint32 AuthRequest
Definition: pqcomm.h:179
struct addrinfo * addrlist
Definition: libpq-int.h:423
#define AUTH_REQ_MD5
Definition: pqcomm.h:170
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
pg_conn_host_type type
Definition: libpq-int.h:311
PostgresPollingStatusType pqSetenvPoll(PGconn *conn)
Definition: fe-protocol2.c:47
static void getHostaddr(PGconn *conn, char *host_addr, int host_addr_len)
Definition: fe-connect.c:1566
#define gai_strerror
Definition: getaddrinfo.h:146
int pg_getaddrinfo_all(const char *hostname, const char *servname, const struct addrinfo *hintp, struct addrinfo **result)
Definition: ip.c:57
static bool parse_int_param(const char *value, int *result, PGconn *conn, const char *context)
Definition: fe-connect.c:1691
int sversion
Definition: libpq-int.h:412
#define SOCK_STRERROR
Definition: libpq-int.h:804
int PQsendQuery(PGconn *conn, const char *query)
Definition: fe-exec.c:1234
PGAsyncStatusType asyncStatus
Definition: libpq-int.h:386
#define NI_MAXHOST
Definition: getaddrinfo.h:88
PGSetenvStatusType setenv_state
Definition: libpq-int.h:426
static int setTCPUserTimeout(PGconn *conn)
Definition: fe-connect.c:1892
static int useKeepalives(PGconn *conn)
Definition: fe-connect.c:1672
#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:803
int pqGetErrorNotice3(PGconn *conn, bool isError)
Definition: fe-protocol3.c:873
#define MAXPGPATH
void appendPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:267
bool try_next_host
Definition: libpq-int.h:422
#define ERRCODE_APPNAME_UNKNOWN
Definition: fe-connect.c:91
char * hostaddr
Definition: libpq-int.h:313
pg_conn_host * connhost
Definition: libpq-int.h:403
int pqReadData(PGconn *conn)
Definition: fe-misc.c:628
bool ssl_in_use
Definition: libpq-int.h:469
const PQEnvironmentOption * next_eo
Definition: libpq-int.h:427
static void restoreErrorMessage(PGconn *conn, PQExpBuffer savedMessage)
Definition: fe-connect.c:2151
char * appname
Definition: libpq-int.h:343
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:371
static void pqDropServerData(PGconn *conn)
Definition: fe-connect.c:527
#define STATUS_OK
Definition: c.h:1114
pgsocket sock
Definition: libpq-int.h:407
uint32 ProtocolVersion
Definition: pqcomm.h:113
int pqGetc(char *result, PGconn *conn)
Definition: fe-misc.c:93
static void connectFailureMessage(PGconn *conn, int errorno)
Definition: fe-connect.c:1598
#define socket(af, type, protocol)
Definition: win32_port.h:431
SockAddr raddr
Definition: libpq-int.h:410
#define PGINVALID_SOCKET
Definition: port.h:33
int addrlist_family
Definition: libpq-int.h:425
int pqsecure_initialize(PGconn *conn)
Definition: fe-secure.c:168
int PQconsumeInput(PGconn *conn)
Definition: fe-exec.c:1704
void appendPQExpBufferChar(PQExpBuffer str, char ch)
Definition: pqexpbuffer.c:380
char * sslmode
Definition: libpq-int.h:358
PQExpBufferData errorMessage
Definition: libpq-int.h:511
bool try_next_addr
Definition: libpq-int.h:421
void PQclear(PGresult *res)
Definition: fe-exec.c:694
#define free(a)
Definition: header.h:65
char * PQresultErrorField(const PGresult *res, int fieldcode)
Definition: fe-exec.c:2754
#define Assert(condition)
Definition: c.h:733
bool pg_set_noblock(pgsocket sock)
Definition: noblock.c:25
char * connip
Definition: libpq-int.h:404
int PQisBusy(PGconn *conn)
Definition: fe-exec.c:1754
char * pqBuildStartupPacket3(PGconn *conn, int *packetlen, const PQEnvironmentOption *options)
#define strerror_r
Definition: port.h:209
ProtocolVersion pversion
Definition: libpq-int.h:411
ConnStatusType status
Definition: libpq-int.h:385
bool auth_req_received
Definition: libpq-int.h:413
int uid_t
Definition: win32_port.h:230
static int setKeepalivesInterval(PGconn *conn)
Definition: fe-connect.c:1771
SockAddr laddr
Definition: libpq-int.h:409
PostgresPollingStatusType
Definition: libpq-fe.h:74
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:68
bool pg_GSS_have_cred_cache(gss_cred_id_t *cred_out)
int pqPacketSend(PGconn *conn, char pack_type, const void *buf, size_t buf_len)
Definition: fe-connect.c:4464
int gid_t
Definition: win32_port.h:231
#define EINPROGRESS
Definition: win32_port.h:335
char * fbappname
Definition: libpq-int.h:344
#define EWOULDBLOCK
Definition: win32_port.h:329
size_t ai_addrlen
Definition: getaddrinfo.h:104
PostgresPollingStatusType pqsecure_open_gss(PGconn *conn)
void pqClearAsyncResult(PGconn *conn)
Definition: fe-exec.c:749
int inCursor
Definition: libpq-int.h:444
#define EINTR
Definition: win32_port.h:323
char * port
Definition: libpq-int.h:314
#define NEGOTIATE_SSL_CODE
Definition: pqcomm.h:205
int nconnhost
Definition: libpq-int.h:401
#define snprintf
Definition: port.h:192
#define PG_PROTOCOL(m, n)
Definition: pqcomm.h:106
int pqGets_append(PQExpBuffer buf, PGconn *conn)
Definition: fe-misc.c:168
long val
Definition: informix.c:684
PGresult * PQgetResult(PGconn *conn)
Definition: fe-exec.c:1778
struct sockaddr * ai_addr
Definition: getaddrinfo.h:105
static int setKeepalivesCount(PGconn *conn)
Definition: fe-connect.c:1806
int whichhost
Definition: libpq-int.h:402
#define libpq_gettext(x)
Definition: libpq-int.h:790
bool send_appname
Definition: libpq-int.h:428
PGTransactionStatusType xactStatus
Definition: libpq-int.h:387
static const PQEnvironmentOption EnvironmentOptions[]
Definition: fe-connect.c:359
int ai_family
Definition: getaddrinfo.h:101

◆ PQconnectStart()

PGconn* PQconnectStart ( const char *  conninfo)

Definition at line 802 of file fe-connect.c.

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

Referenced by PQconnectdb(), and PQping().

803 {
804  PGconn *conn;
805 
806  /*
807  * Allocate memory for the conn structure
808  */
809  conn = makeEmptyPGconn();
810  if (conn == NULL)
811  return NULL;
812 
813  /*
814  * Parse the conninfo string
815  */
816  if (!connectOptions1(conn, conninfo))
817  return conn;
818 
819  /*
820  * Compute derived options
821  */
822  if (!connectOptions2(conn))
823  return conn;
824 
825  /*
826  * Connect to the database
827  */
828  if (!connectDBStart(conn))
829  {
830  /* Just in case we failed to set it in connectDBStart */
831  conn->status = CONNECTION_BAD;
832  }
833 
834  return conn;
835 }
static bool connectOptions1(PGconn *conn, const char *conninfo)
Definition: fe-connect.c:888
PGconn * conn
Definition: streamutil.c:54
static int connectDBStart(PGconn *conn)
Definition: fe-connect.c:1931
static PGconn * makeEmptyPGconn(void)
Definition: fe-connect.c:3801
ConnStatusType status
Definition: libpq-int.h:385
static bool connectOptions2(PGconn *conn)
Definition: fe-connect.c:986

◆ PQconnectStartParams()

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

Definition at line 723 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().

726 {
727  PGconn *conn;
728  PQconninfoOption *connOptions;
729 
730  /*
731  * Allocate memory for the conn structure
732  */
733  conn = makeEmptyPGconn();
734  if (conn == NULL)
735  return NULL;
736 
737  /*
738  * Parse the conninfo arrays
739  */
740  connOptions = conninfo_array_parse(keywords, values,
741  &conn->errorMessage,
742  true, expand_dbname);
743  if (connOptions == NULL)
744  {
745  conn->status = CONNECTION_BAD;
746  /* errorMessage is already set */
747  return conn;
748  }
749 
750  /*
751  * Move option values into conn structure
752  */
753  if (!fillPGconn(conn, connOptions))
754  {
755  PQconninfoFree(connOptions);
756  return conn;
757  }
758 
759  /*
760  * Free the option info - all is in conn now
761  */
762  PQconninfoFree(connOptions);
763 
764  /*
765  * Compute derived options
766  */
767  if (!connectOptions2(conn))
768  return conn;
769 
770  /*
771  * Connect to the database
772  */
773  if (!connectDBStart(conn))
774  {
775  /* Just in case we failed to set it in connectDBStart */
776  conn->status = CONNECTION_BAD;
777  }
778 
779  return conn;
780 }
PGconn * conn
Definition: streamutil.c:54
static int connectDBStart(PGconn *conn)
Definition: fe-connect.c:1931
void PQconninfoFree(PQconninfoOption *connOptions)
Definition: fe-connect.c:6449
static PGconn * makeEmptyPGconn(void)
Definition: fe-connect.c:3801
PQExpBufferData errorMessage
Definition: libpq-int.h:511
static bool fillPGconn(PGconn *conn, PQconninfoOption *connOptions)
Definition: fe-connect.c:846
ConnStatusType status
Definition: libpq-int.h:385
static Datum values[MAXATTR]
Definition: bootstrap.c:167
static bool connectOptions2(PGconn *conn)
Definition: fe-connect.c:986
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:5513

◆ PQconninfo()

PQconninfoOption* PQconninfo ( PGconn conn)

Definition at line 6408 of file fe-connect.c.

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

Referenced by GenerateRecoveryConfig(), has_hostaddr(), and libpqrcv_get_conninfo().

6409 {
6410  PQExpBufferData errorBuf;
6411  PQconninfoOption *connOptions;
6412 
6413  if (conn == NULL)
6414  return NULL;
6415 
6416  /* We don't actually report any errors here, but callees want a buffer */
6417  initPQExpBuffer(&errorBuf);
6418  if (PQExpBufferDataBroken(errorBuf))
6419  return NULL; /* out of memory already :-( */
6420 
6421  connOptions = conninfo_init(&errorBuf);
6422 
6423  if (connOptions != NULL)
6424  {
6426 
6427  for (option = PQconninfoOptions; option->keyword; option++)
6428  {
6429  char **connmember;
6430 
6431  if (option->connofs < 0)
6432  continue;
6433 
6434  connmember = (char **) ((char *) conn + option->connofs);
6435 
6436  if (*connmember)
6437  conninfo_storeval(connOptions, option->keyword, *connmember,
6438  &errorBuf, true, false);
6439  }
6440  }
6441 
6442  termPQExpBuffer(&errorBuf);
6443 
6444  return connOptions;
6445 }
static PQconninfoOption * conninfo_storeval(PQconninfoOption *connOptions, const char *keyword, const char *value, PQExpBuffer errorMessage, bool ignoreMissing, bool uri_decode)
Definition: fe-connect.c:6325
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:131
static PQconninfoOption * conninfo_init(PQExpBuffer errorMessage)
Definition: fe-connect.c:5241
static const internalPQconninfoOption PQconninfoOptions[]
Definition: fe-connect.c:193
#define PQExpBufferDataBroken(buf)
Definition: pqexpbuffer.h:67
void initPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:92

◆ PQconninfoFree()

void PQconninfoFree ( PQconninfoOption connOptions)

Definition at line 6449 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(), GenerateRecoveryConfig(), GetConnection(), has_hostaddr(), libpqrcv_check_conninfo(), libpqrcv_get_conninfo(), PQconndefaults(), and PQconnectStartParams().

6450 {
6452 
6453  if (connOptions == NULL)
6454  return;
6455 
6456  for (option = connOptions; option->keyword != NULL; option++)
6457  {
6458  if (option->val != NULL)
6459  free(option->val);
6460  }
6461  free(connOptions);
6462 }
#define free(a)
Definition: header.h:65

◆ PQconninfoParse()

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

Definition at line 5219 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().

5220 {
5221  PQExpBufferData errorBuf;
5222  PQconninfoOption *connOptions;
5223 
5224  if (errmsg)
5225  *errmsg = NULL; /* default */
5226  initPQExpBuffer(&errorBuf);
5227  if (PQExpBufferDataBroken(errorBuf))
5228  return NULL; /* out of memory already :-( */
5229  connOptions = parse_connection_string(conninfo, &errorBuf, false);
5230  if (connOptions == NULL && errmsg)
5231  *errmsg = errorBuf.data;
5232  else
5233  termPQExpBuffer(&errorBuf);
5234  return connOptions;
5235 }
void termPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:131
static PQconninfoOption * parse_connection_string(const char *conninfo, PQExpBuffer errorMessage, bool use_defaults)
Definition: fe-connect.c:5281
#define PQExpBufferDataBroken(buf)
Definition: pqexpbuffer.h:67
int errmsg(const char *fmt,...)
Definition: elog.c:822
void initPQExpBuffer(PQExpBuffer str)
Definition: pqexpbuffer.c:92

◆ PQconsumeInput()

int PQconsumeInput ( PGconn conn)

Definition at line 1704 of file fe-exec.c.

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

Referenced by advanceConnectionState(), CopyStreamReceive(), dblink_get_notify(), dblink_is_busy(), ecpg_process_output(), libpqrcv_PQgetResult(), libpqrcv_receive(), main(), ParallelSlotsGetIdle(), pgfdw_get_cleanup_result(), pgfdw_get_result(), PQconnectPoll(), PrintNotifications(), StreamLogicalLog(), and try_complete_step().

1705 {
1706  if (!conn)
1707  return 0;
1708 
1709  /*
1710  * for non-blocking connections try to flush the send-queue, otherwise we
1711  * may never get a response for something that may not have already been
1712  * sent because it's in our write buffer!
1713  */
1714  if (pqIsnonblocking(conn))
1715  {
1716  if (pqFlush(conn) < 0)
1717  return 0;
1718  }
1719 
1720  /*
1721  * Load more data, if available. We do this no matter what state we are
1722  * in, since we are probably getting called because the application wants
1723  * to get rid of a read-select condition. Note that we will NOT block
1724  * waiting for more input.
1725  */
1726  if (pqReadData(conn) < 0)
1727  return 0;
1728 
1729  /* Parsing of the data waits till later. */
1730  return 1;
1731 }
int pqFlush(PGconn *conn)
Definition: fe-misc.c:997
#define pqIsnonblocking(conn)
Definition: libpq-int.h:784
int pqReadData(PGconn *conn)
Definition: fe-misc.c:628

◆ PQcopyResult()

PGresult* PQcopyResult ( const PGresult src,
int  flags 
)

Definition at line 294 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::memorySize, 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().

295 {
296  PGresult *dest;
297  int i;
298 
299  if (!src)
300  return NULL;
301 
302  dest = PQmakeEmptyPGresult(NULL, PGRES_TUPLES_OK);
303  if (!dest)
304  return NULL;
305 
306  /* Always copy these over. Is cmdStatus really useful here? */
307  dest->client_encoding = src->client_encoding;
308  strcpy(dest->cmdStatus, src->cmdStatus);
309 
310  /* Wants attrs? */
311  if (flags & (PG_COPYRES_ATTRS | PG_COPYRES_TUPLES))
312  {
313  if (!PQsetResultAttrs(dest, src->numAttributes, src->attDescs))
314  {
315  PQclear(dest);
316  return NULL;
317  }
318  }
319 
320  /* Wants to copy tuples? */
321  if (flags & PG_COPYRES_TUPLES)
322  {
323  int tup,
324  field;
325 
326  for (tup = 0; tup < src->ntups; tup++)
327  {
328  for (field = 0; field < src->numAttributes; field++)
329  {
330  if (!PQsetvalue(dest, tup, field,
331  src->tuples[tup][field].value,
332  src->tuples[tup][field].len))
333  {
334  PQclear(dest);
335  return NULL;
336  }
337  }
338  }
339  }
340 
341  /* Wants to copy notice hooks? */
342  if (flags & PG_COPYRES_NOTICEHOOKS)
343  dest->noticeHooks = src->noticeHooks;
344 
345  /* Wants to copy PGEvents? */
346  if ((flags & PG_COPYRES_EVENTS) && src->nEvents > 0)
347  {
348  dest->events = dupEvents(src->events, src->nEvents,
349  &dest->memorySize);
350  if (!dest->events)
351  {
352  PQclear(dest);
353  return NULL;
354  }
355  dest->nEvents = src->nEvents;
356  }
357 
358  /* Okay, trigger PGEVT_RESULTCOPY event */
359  for (i = 0; i < dest->nEvents; i++)
360  {
361  if (src->events[i].resultInitialized)
362  {
363  PGEventResultCopy evt;
364 
365  evt.src = src;
366  evt.dest = dest;
367  if (!dest->events[i].proc(PGEVT_RESULTCOPY, &evt,
368  dest->events[i].passThrough))
369  {
370  PQclear(dest);
371  return NULL;
372  }
373  dest->events[i].resultInitialized = true;
374  }
375  }
376 
377  return dest;
378 }
size_t memorySize
Definition: libpq-int.h:212
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:431
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:229
PGresult * PQmakeEmptyPGresult(PGconn *conn, ExecStatusType status)
Definition: fe-exec.c:141
int numAttributes
Definition: libpq-int.h:170
#define PG_COPYRES_ATTRS
Definition: libpq-fe.h:34
void PQclear(PGresult *res)
Definition: fe-exec.c:694
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
static PGEvent * dupEvents(PGEvent *events, int count, size_t *memSize)
Definition: fe-exec.c:387
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 2175 of file fe-exec.c.

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

2176 {
2177  if (!PQexecStart(conn))
2178  return NULL;
2179  if (!PQsendDescribe(conn, 'P', portal))
2180  return NULL;
2181  return PQexecFinish(conn);
2182 }
static int PQsendDescribe(PGconn *conn, char desc_type, const char *desc_target)
Definition: fe-exec.c:2220
static PGresult * PQexecFinish(PGconn *conn)
Definition: fe-exec.c:2095
static bool PQexecStart(PGconn *conn)
Definition: fe-exec.c:2021

◆ PQdescribePrepared()

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

Definition at line 2156 of file fe-exec.c.

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

Referenced by DescribeQuery(), and ECPGdescribe().

2157 {
2158  if (!PQexecStart(conn))
2159  return NULL;
2160  if (!PQsendDescribe(conn, 'S', stmt))
2161  return NULL;
2162  return PQexecFinish(conn);
2163 }
static int PQsendDescribe(PGconn *conn, char desc_type, const char *desc_target)
Definition: fe-exec.c:2220
static PGresult * PQexecFinish(PGconn *conn)
Definition: fe-exec.c:2095
static bool PQexecStart(PGconn *conn)
Definition: fe-exec.c:2021

◆ 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(), fprintf, free, i, libpq_gettext, malloc, PQfname(), PQgetlength(), PQgetvalue(), PQnfields(), PQntuples(), and generate_unaccent_rules::stdout.

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:3174
int PQnfields(const PGresult *res)
Definition: fe-exec.c:2777
char * PQgetvalue(const PGresult *res, int tup_num, int field_num)
Definition: fe-exec.c:3163
char * PQfname(const PGresult *res, int field_num)
Definition: fe-exec.c:2855
int PQntuples(const PGresult *res)
Definition: fe-exec.c:2769
#define fprintf
Definition: port.h:196
#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:790

◆ PQdsplen()

int PQdsplen ( const char *  s,
int  encoding 
)

Definition at line 1226 of file fe-misc.c.

References pg_encoding_dsplen().

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

1227 {
1228  return pg_encoding_dsplen(encoding, s);
1229 }
int pg_encoding_dsplen(int encoding, const char *mbstr)
Definition: wchar.c:1844
int32 encoding
Definition: pg_database.h:41

◆ PQencryptPassword()

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

Definition at line 1147 of file fe-auth.c.

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

1148 {
1149  char *crypt_pwd;
1150 
1151  crypt_pwd = malloc(MD5_PASSWD_LEN + 1);
1152  if (!crypt_pwd)
1153  return NULL;
1154 
1155  if (!pg_md5_encrypt(passwd, user, strlen(user), crypt_pwd))
1156  {
1157  free(crypt_pwd);
1158  return NULL;
1159  }
1160 
1161  return crypt_pwd;
1162 }
#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:20
#define free(a)
Definition: header.h:65
static char * user
Definition: pg_regress.c:94

◆ PQencryptPasswordConn()

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

Definition at line 1189 of file fe-auth.c.

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

Referenced by exec_command_password(), and main().

1191 {
1192 #define MAX_ALGORITHM_NAME_LEN 50
1193  char algobuf[MAX_ALGORITHM_NAME_LEN + 1];
1194  char *crypt_pwd = NULL;
1195 
1196  if (!conn)
1197  return NULL;
1198 
1199  /* If no algorithm was given, ask the server. */
1200  if (algorithm == NULL)
1201  {
1202  PGresult *res;
1203  char *val;
1204 
1205  res = PQexec(conn, "show password_encryption");
1206  if (res == NULL)
1207  {
1208  /* PQexec() should've set conn->errorMessage already */
1209  return NULL;
1210  }
1211  if (PQresultStatus(res) != PGRES_TUPLES_OK)
1212  {
1213  /* PQexec() should've set conn->errorMessage already */
1214  PQclear(res);
1215  return NULL;
1216  }
1217  if (PQntuples(res) != 1 || PQnfields(res) != 1)
1218  {
1219  PQclear(res);
1221  libpq_gettext("unexpected shape of result set returned for SHOW\n"));
1222  return NULL;
1223  }
1224  val = PQgetvalue(res, 0, 0);
1225 
1226  if (strlen(val) > MAX_ALGORITHM_NAME_LEN)
1227  {
1228  PQclear(res);
1230  libpq_gettext("password_encryption value too long\n"));
1231  return NULL;
1232  }
1233  strcpy(algobuf, val);
1234  PQclear(res);
1235 
1236  algorithm = algobuf;
1237  }
1238 
1239  /*
1240  * Also accept "on" and "off" as aliases for "md5", because
1241  * password_encryption was a boolean before PostgreSQL 10. We refuse to
1242  * send the password in plaintext even if it was "off".
1243  */
1244  if (strcmp(algorithm, "on") == 0 ||
1245  strcmp(algorithm, "off") == 0)
1246  algorithm = "md5";
1247 
1248  /*
1249  * Ok, now we know what algorithm to use
1250  */
1251  if (strcmp(algorithm, "scram-sha-256") == 0)
1252  {
1253  crypt_pwd = pg_fe_scram_build_secret(passwd);
1254  }
1255  else if (strcmp(algorithm, "md5") == 0)
1256  {
1257  crypt_pwd = malloc(MD5_PASSWD_LEN + 1);
1258  if (crypt_pwd)
1259  {
1260  if (!pg_md5_encrypt(passwd, user, strlen(user), crypt_pwd))
1261  {
1262  free(crypt_pwd);
1263  crypt_pwd = NULL;
1264  }
1265  }
1266  }
1267  else
1268  {
1270  libpq_gettext("unrecognized password encryption algorithm \"%s\"\n"),
1271  algorithm);
1272  return NULL;
1273  }
1274 
1275  if (!crypt_pwd)
1277  libpq_gettext("out of memory\n"));
1278 
1279  return crypt_pwd;
1280 }
int PQnfields(const PGresult *res)
Definition: fe-exec.c:2777
void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:237
char * PQgetvalue(const PGresult *res, int tup_num, int field_num)
Definition: fe-exec.c:3163
int PQntuples(const PGresult *res)
Definition: fe-exec.c:2769
ExecStatusType PQresultStatus(const PGresult *res)
Definition: fe-exec.c:2692
#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
char * pg_fe_scram_build_secret(const char *password)
PQExpBufferData errorMessage
Definition: libpq-int.h:511
void PQclear(PGresult *res)
Definition: fe-exec.c:694
#define MD5_PASSWD_LEN
Definition: md5.h:20
#define free(a)
Definition: header.h:65
static char * user
Definition: pg_regress.c:94
PGresult * PQexec(PGconn *conn, const char *query)
Definition: fe-exec.c:1939
long val
Definition: informix.c:684
#define libpq_gettext(x)
Definition: libpq-int.h:790

◆ PQendcopy()

int PQendcopy ( PGconn conn)

Definition at line 2618 of file fe-exec.c.

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

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

2619 {
2620  if (!conn)
2621  return 0;
2622 
2623  if (PG_PROTOCOL_MAJOR(conn->pversion) >= 3)
2624  return pqEndcopy3(conn);
2625  else
2626  return pqEndcopy2(conn);
2627 }
#define PG_PROTOCOL_MAJOR(v)
Definition: pqcomm.h:104
int pqEndcopy3(PGconn *conn)
ProtocolVersion pversion
Definition: libpq-int.h:411
int pqEndcopy2(PGconn *conn)

◆ PQenv2encoding()

int PQenv2encoding ( void  )

Definition at line 1235 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().

1236 {
1237  char *str;
1238  int encoding = PG_SQL_ASCII;
1239 
1240  str = getenv("PGCLIENTENCODING");
1241  if (str && *str != '\0')
1242  {
1243  encoding = pg_char_to_encoding(str);
1244  if (encoding < 0)
1245  encoding = PG_SQL_ASCII;
1246  }
1247  return encoding;
1248 }
int pg_char_to_encoding(const char *name)
Definition: encnames.c:551
int32 encoding
Definition: pg_database.h:41

◆ PQerrorMessage()