95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* be-gssapi-common.c
|
|
* Common code for GSSAPI authentication and encryption
|
|
*
|
|
* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* IDENTIFICATION
|
|
* src/backend/libpq/be-gssapi-common.c
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "postgres.h"
|
|
|
|
#include "libpq/be-gssapi-common.h"
|
|
|
|
/*
|
|
* Fetch all errors of a specific type and append to "s" (buffer of size len).
|
|
* If we obtain more than one string, separate them with spaces.
|
|
* Call once for GSS_CODE and once for MECH_CODE.
|
|
*/
|
|
static void
|
|
pg_GSS_error_int(char *s, size_t len, OM_uint32 stat, int type)
|
|
{
|
|
gss_buffer_desc gmsg;
|
|
size_t i = 0;
|
|
OM_uint32 lmin_s,
|
|
msg_ctx = 0;
|
|
|
|
do
|
|
{
|
|
if (gss_display_status(&lmin_s, stat, type, GSS_C_NO_OID,
|
|
&msg_ctx, &gmsg) != GSS_S_COMPLETE)
|
|
break;
|
|
if (i > 0)
|
|
{
|
|
if (i < len)
|
|
s[i] = ' ';
|
|
i++;
|
|
}
|
|
if (i < len)
|
|
memcpy(s + i, gmsg.value, Min(len - i, gmsg.length));
|
|
i += gmsg.length;
|
|
gss_release_buffer(&lmin_s, &gmsg);
|
|
}
|
|
while (msg_ctx);
|
|
|
|
/* add nul termination */
|
|
if (i < len)
|
|
s[i] = '\0';
|
|
else
|
|
{
|
|
elog(COMMERROR, "incomplete GSS error report");
|
|
s[len - 1] = '\0';
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Report the GSSAPI error described by maj_stat/min_stat.
|
|
*
|
|
* errmsg should be an already-translated primary error message.
|
|
* The GSSAPI info is appended as errdetail.
|
|
*
|
|
* The error is always reported with elevel COMMERROR; we daren't try to
|
|
* send it to the client, as that'd likely lead to infinite recursion
|
|
* when elog.c tries to write to the client.
|
|
*
|
|
* To avoid memory allocation, total error size is capped (at 128 bytes for
|
|
* each of major and minor). No known mechanisms will produce error messages
|
|
* beyond this cap.
|
|
*/
|
|
void
|
|
pg_GSS_error(const char *errmsg,
|
|
OM_uint32 maj_stat, OM_uint32 min_stat)
|
|
{
|
|
char msg_major[128],
|
|
msg_minor[128];
|
|
|
|
/* Fetch major status message */
|
|
pg_GSS_error_int(msg_major, sizeof(msg_major), maj_stat, GSS_C_GSS_CODE);
|
|
|
|
/* Fetch mechanism minor status message */
|
|
pg_GSS_error_int(msg_minor, sizeof(msg_minor), min_stat, GSS_C_MECH_CODE);
|
|
|
|
/*
|
|
* errmsg_internal, since translation of the first part must be done
|
|
* before calling this function anyway.
|
|
*/
|
|
ereport(COMMERROR,
|
|
(errmsg_internal("%s", errmsg),
|
|
errdetail_internal("%s: %s", msg_major, msg_minor)));
|
|
}
|