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Fix Kerberos authentication in wake of virtual-hosts changes --- need 

to call krb5_sname_to_principal() always.  Also, use krb_srvname rather
than the hardwired string 'postgres' as the appl_version string in the
krb5_sendauth/recvauth calls, to avoid breaking compatibility with PG
8.0.  Magnus Hagander
This commit is contained in:
Tom Lane 2005-10-08 19:32:58 +00:00
parent 4909357237
commit 18d0ca2d1b
3 changed files with 30 additions and 23 deletions
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47
src/backend/libpq/auth.c
View File

@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/libpq/auth.c,v 1.127 2005/07/25 04:52:31 tgl Exp $ * $PostgreSQL: pgsql/src/backend/libpq/auth.c,v 1.128 2005/10/08 19:32:57 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -119,6 +119,7 @@ static int
pg_krb5_init(void) pg_krb5_init(void)
{ {
krb5_error_code retval; krb5_error_code retval;
char *khostname;
if (pg_krb5_initialised) if (pg_krb5_initialised)
return STATUS_OK; return STATUS_OK;
@ -145,25 +146,31 @@ pg_krb5_init(void)
return STATUS_ERROR; return STATUS_ERROR;
} }
if (pg_krb_server_hostname) /*
* If no hostname was specified, pg_krb_server_hostname is already
* NULL. If it's set to blank, force it to NULL.
*/
khostname = pg_krb_server_hostname;
if (khostname && khostname[0] == '\0')
khostname = NULL;
retval = krb5_sname_to_principal(pg_krb5_context,
khostname,
pg_krb_srvnam,
KRB5_NT_SRV_HST,
&pg_krb5_server);
if (retval)
{ {
retval = krb5_sname_to_principal(pg_krb5_context, ereport(LOG,
pg_krb_server_hostname, pg_krb_srvnam, (errmsg("Kerberos sname_to_principal(\"%s\") returned error %d",
KRB5_NT_SRV_HST, &pg_krb5_server); pg_krb_srvnam, retval)));
if (retval) com_err("postgres", retval,
{ "while getting server principal for service \"%s\"",
ereport(LOG, pg_krb_srvnam);
(errmsg("Kerberos sname_to_principal(\"%s\") returned error %d", krb5_kt_close(pg_krb5_context, pg_krb5_keytab);
pg_krb_srvnam, retval))); krb5_free_context(pg_krb5_context);
com_err("postgres", retval, return STATUS_ERROR;
"while getting server principal for service \"%s\"", }
pg_krb_srvnam);
krb5_kt_close(pg_krb5_context, pg_krb5_keytab);
krb5_free_context(pg_krb5_context);
return STATUS_ERROR;
}
} else
pg_krb5_server = NULL;
pg_krb5_initialised = 1; pg_krb5_initialised = 1;
return STATUS_OK; return STATUS_OK;
@ -194,7 +201,7 @@ pg_krb5_recvauth(Port *port)
return ret; return ret;
retval = krb5_recvauth(pg_krb5_context, &auth_context, retval = krb5_recvauth(pg_krb5_context, &auth_context,
(krb5_pointer) & port->sock, "postgres", (krb5_pointer) & port->sock, pg_krb_srvnam,
pg_krb5_server, 0, pg_krb5_keytab, &ticket); pg_krb5_server, 0, pg_krb5_keytab, &ticket);
if (retval) if (retval)
{ {

2
src/backend/utils/misc/postgresql.conf.sample
View File

@ -70,7 +70,7 @@
# Kerberos # Kerberos
#krb_server_keyfile = '' #krb_server_keyfile = ''
#krb_srvname = 'postgres' #krb_srvname = 'postgres'
#krb_server_hostname = '(any)' # if not set, matches any keytab entry #krb_server_hostname = '' # empty string matches any keytab entry
#krb_caseins_users = off #krb_caseins_users = off
# - TCP Keepalives - # - TCP Keepalives -

4
src/interfaces/libpq/fe-auth.c
View File

@ -10,7 +10,7 @@
* exceed INITIAL_EXPBUFFER_SIZE (currently 256 bytes). * exceed INITIAL_EXPBUFFER_SIZE (currently 256 bytes).
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-auth.c,v 1.103 2005/06/30 01:59:20 neilc Exp $ * $PostgreSQL: pgsql/src/interfaces/libpq/fe-auth.c,v 1.104 2005/10/08 19:32:58 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -280,7 +280,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *s
} }
retval = krb5_sendauth(pg_krb5_context, &auth_context, retval = krb5_sendauth(pg_krb5_context, &auth_context,
(krb5_pointer) & sock, "postgres", (krb5_pointer) & sock, (char *) servicename,
pg_krb5_client, server, pg_krb5_client, server,
AP_OPTS_MUTUAL_REQUIRED, AP_OPTS_MUTUAL_REQUIRED,
NULL, 0, /* no creds, use ccache instead */ NULL, 0, /* no creds, use ccache instead */