be-gssapi-common.c File Reference

#include "postgres.h"
#include "libpq/be-gssapi-common.h"

Include dependency graph for be-gssapi-common.c:

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Macros
#define	GSS_MEMORY_CACHE   "MEMORY:"

Functions
static void	pg_GSS_error_int (char *s, size_t len, OM_uint32 stat, int type)
void	pg_GSS_error (const char *errmsg, OM_uint32 maj_stat, OM_uint32 min_stat)
void	pg_store_delegated_credential (gss_cred_id_t cred)

Macro Definition Documentation

GSS_MEMORY_CACHE

#define GSS_MEMORY_CACHE   "MEMORY:"

Definition at line 102 of file be-gssapi-common.c.

Function Documentation

pg_GSS_error()

void pg_GSS_error	(	const char *	errmsg,
		OM_uint32	maj_stat,
		OM_uint32	min_stat
	)

Definition at line 75 of file be-gssapi-common.c.

{
    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)));
}

References COMMERROR, ereport, errdetail_internal(), errmsg(), errmsg_internal(), and pg_GSS_error_int().

Referenced by be_gssapi_read(), be_gssapi_write(), pg_GSS_read(), pg_GSS_write(), pg_store_delegated_credential(), pqsecure_open_gss(), and secure_open_gssapi().

pg_GSS_error_int()

static void pg_GSS_error_int ( char *  s, size_t  len, OM_uint32  stat, int  type  )

static

Definition at line 25 of file be-gssapi-common.c.

{
    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';
    }
}

References COMMERROR, elog, i, len, Min, and type.

Referenced by pg_GSS_error().

pg_store_delegated_credential()

void pg_store_delegated_credential

(

gss_cred_id_t

cred

)

Definition at line 104 of file be-gssapi-common.c.

{
    OM_uint32   major,
                minor;
    gss_OID_set mech;
    gss_cred_usage_t usage;
    gss_key_value_element_desc cc;
    gss_key_value_set_desc ccset;
 
    cc.key = "ccache";
    cc.value = GSS_MEMORY_CACHE;
    ccset.count = 1;
    ccset.elements = &cc;
 
    /* Make the delegated credential only available to current process */
    major = gss_store_cred_into(&minor,
                                cred,
                                GSS_C_INITIATE, /* credential only used for
                                                 * starting libpq connection */
                                GSS_C_NULL_OID, /* store all */
                                true,   /* overwrite */
                                true,   /* make default */
                                &ccset,
                                &mech,
                                &usage);
 
    if (major != GSS_S_COMPLETE)
    {
        pg_GSS_error("gss_store_cred", major, minor);
    }
 
    /* Credential stored, so we can release our credential handle. */
    major = gss_release_cred(&minor, &cred);
    if (major != GSS_S_COMPLETE)
    {
        pg_GSS_error("gss_release_cred", major, minor);
    }
 
    /*
     * Set KRB5CCNAME for this backend, so that later calls to
     * gss_acquire_cred will find the delegated credentials we stored.
     */
    setenv("KRB5CCNAME", GSS_MEMORY_CACHE, 1);
}

References GSS_MEMORY_CACHE, pg_GSS_error(), setenv, and usage().

Referenced by secure_open_gssapi().