PostgreSQL Source Code  git master
fe-gssapi-common.c File Reference
#include "postgres_fe.h"
#include "fe-gssapi-common.h"
#include "libpq-int.h"
#include "pqexpbuffer.h"
Include dependency graph for fe-gssapi-common.c:

Go to the source code of this file.

Functions

static void pg_GSS_error_int (PQExpBuffer str, OM_uint32 stat, int type)
 
void pg_GSS_error (const char *mprefix, PGconn *conn, OM_uint32 maj_stat, OM_uint32 min_stat)
 
bool pg_GSS_have_cred_cache (gss_cred_id_t *cred_out)
 
int pg_GSS_load_servicename (PGconn *conn)
 

Function Documentation

◆ pg_GSS_error()

void pg_GSS_error ( const char *  mprefix,
PGconn conn,
OM_uint32  maj_stat,
OM_uint32  min_stat 
)

Definition at line 47 of file fe-gssapi-common.c.

References appendPQExpBuffer(), appendPQExpBufferChar(), pg_conn::errorMessage, and pg_GSS_error_int().

Referenced by pg_GSS_load_servicename().

49 {
50  appendPQExpBuffer(&conn->errorMessage, "%s:", mprefix);
51  pg_GSS_error_int(&conn->errorMessage, maj_stat, GSS_C_GSS_CODE);
53  pg_GSS_error_int(&conn->errorMessage, min_stat, GSS_C_MECH_CODE);
54  appendPQExpBufferChar(&conn->errorMessage, '\n');
55 }
void appendPQExpBuffer(PQExpBuffer str, const char *fmt,...)
Definition: pqexpbuffer.c:267
void appendPQExpBufferChar(PQExpBuffer str, char ch)
Definition: pqexpbuffer.c:380
PQExpBufferData errorMessage
Definition: libpq-int.h:571
static void pg_GSS_error_int(PQExpBuffer str, OM_uint32 stat, int type)

◆ pg_GSS_error_int()

static void pg_GSS_error_int ( PQExpBuffer  str,
OM_uint32  stat,
int  type 
)
static

Definition at line 26 of file fe-gssapi-common.c.

References appendBinaryPQExpBuffer(), and appendPQExpBufferChar().

Referenced by pg_GSS_error().

27 {
28  OM_uint32 lmin_s;
29  gss_buffer_desc lmsg;
30  OM_uint32 msg_ctx = 0;
31 
32  do
33  {
34  if (gss_display_status(&lmin_s, stat, type, GSS_C_NO_OID,
35  &msg_ctx, &lmsg) != GSS_S_COMPLETE)
36  break;
37  appendPQExpBufferChar(str, ' ');
38  appendBinaryPQExpBuffer(str, lmsg.value, lmsg.length);
39  gss_release_buffer(&lmin_s, &lmsg);
40  } while (msg_ctx);
41 }
void appendPQExpBufferChar(PQExpBuffer str, char ch)
Definition: pqexpbuffer.c:380
void appendBinaryPQExpBuffer(PQExpBuffer str, const char *data, size_t datalen)
Definition: pqexpbuffer.c:399

◆ pg_GSS_have_cred_cache()

bool pg_GSS_have_cred_cache ( gss_cred_id_t *  cred_out)

Definition at line 61 of file fe-gssapi-common.c.

Referenced by PQconnectPoll().

62 {
63  OM_uint32 major,
64  minor;
65  gss_cred_id_t cred = GSS_C_NO_CREDENTIAL;
66 
67  major = gss_acquire_cred(&minor, GSS_C_NO_NAME, 0, GSS_C_NO_OID_SET,
68  GSS_C_INITIATE, &cred, NULL, NULL);
69  if (major != GSS_S_COMPLETE)
70  {
71  *cred_out = NULL;
72  return false;
73  }
74  *cred_out = cred;
75  return true;
76 }

◆ pg_GSS_load_servicename()

int pg_GSS_load_servicename ( PGconn conn)

Definition at line 82 of file fe-gssapi-common.c.

References appendPQExpBufferStr(), pg_conn::errorMessage, free, pg_conn::krbsrvname, libpq_gettext, malloc, pg_GSS_error(), PQhost(), snprintf, STATUS_ERROR, and STATUS_OK.

Referenced by pqsecure_open_gss().

83 {
84  OM_uint32 maj_stat,
85  min_stat;
86  int maxlen;
87  gss_buffer_desc temp_gbuf;
88  char *host;
89 
90  if (conn->gtarg_nam != NULL)
91  /* Already taken care of - move along */
92  return STATUS_OK;
93 
94  host = PQhost(conn);
95  if (!(host && host[0] != '\0'))
96  {
98  libpq_gettext("host name must be specified\n"));
99  return STATUS_ERROR;
100  }
101 
102  /*
103  * Import service principal name so the proper ticket can be acquired by
104  * the GSSAPI system.
105  */
106  maxlen = strlen(conn->krbsrvname) + strlen(host) + 2;
107  temp_gbuf.value = (char *) malloc(maxlen);
108  if (!temp_gbuf.value)
109  {
111  libpq_gettext("out of memory\n"));
112  return STATUS_ERROR;
113  }
114  snprintf(temp_gbuf.value, maxlen, "%s@%s",
115  conn->krbsrvname, host);
116  temp_gbuf.length = strlen(temp_gbuf.value);
117 
118  maj_stat = gss_import_name(&min_stat, &temp_gbuf,
119  GSS_C_NT_HOSTBASED_SERVICE, &conn->gtarg_nam);
120  free(temp_gbuf.value);
121 
122  if (maj_stat != GSS_S_COMPLETE)
123  {
124  pg_GSS_error(libpq_gettext("GSSAPI name import error"),
125  conn,
126  maj_stat, min_stat);
127  return STATUS_ERROR;
128  }
129  return STATUS_OK;
130 }
void appendPQExpBufferStr(PQExpBuffer str, const char *data)
Definition: pqexpbuffer.c:369
#define STATUS_ERROR
Definition: c.h:1171
#define malloc(a)
Definition: header.h:50
char * krbsrvname
Definition: libpq-int.h:390
#define STATUS_OK
Definition: c.h:1170
PQExpBufferData errorMessage
Definition: libpq-int.h:571
char * PQhost(const PGconn *conn)
Definition: fe-connect.c:6623
#define free(a)
Definition: header.h:65
void pg_GSS_error(const char *mprefix, PGconn *conn, OM_uint32 maj_stat, OM_uint32 min_stat)
#define snprintf
Definition: port.h:216
#define libpq_gettext(x)
Definition: libpq-int.h:841