The correct min buffer size is

INITIAL_EXPBUFFER_SIZE, not PQERRORMSG_LENGTH.

Backpatch only, the proper fix in HEAD is
to use PQExpBuffers everywhere.

diff --git a/src/interfaces/libpq/fe-auth.c b/src/interfaces/libpq/fe-auth.c
index d1f1a5c480cddae4cebbf572e7b5c49a2df65b6c..de2b6f72a741dae32852e40e764c2526f5b2941c 100644 (file)
--- a/src/interfaces/libpq/fe-auth.c
+++ b/src/interfaces/libpq/fe-auth.c
@@ -10,7 +10,7 @@
  * exceed INITIAL_EXPBUFFER_SIZE (currently 256 bytes).
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/interfaces/libpq/fe-auth.c,v 1.121.2.1 2007/07/12 14:13:06 mha Exp $
+ *       $PostgreSQL: pgsql/src/interfaces/libpq/fe-auth.c,v 1.121.2.2 2007/07/23 18:13:09 mha Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -141,7 +141,7 @@ pg_krb5_init(char *PQerrormsg, struct krb5_info * info)
        retval = krb5_init_context(&(info->pg_krb5_context));
        if (retval)
        {
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 "pg_krb5_init: krb5_init_context: %s\n",
                                 error_message(retval));
                return STATUS_ERROR;
@@ -150,7 +150,7 @@ pg_krb5_init(char *PQerrormsg, struct krb5_info * info)
        retval = krb5_cc_default(info->pg_krb5_context, &(info->pg_krb5_ccache));
        if (retval)
        {
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 "pg_krb5_init: krb5_cc_default: %s\n",
                                 error_message(retval));
                krb5_free_context(info->pg_krb5_context);
@@ -161,7 +161,7 @@ pg_krb5_init(char *PQerrormsg, struct krb5_info * info)
                                                                   &(info->pg_krb5_client));
        if (retval)
        {
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 "pg_krb5_init: krb5_cc_get_principal: %s\n",
                                 error_message(retval));
                krb5_cc_close(info->pg_krb5_context, info->pg_krb5_ccache);
@@ -172,7 +172,7 @@ pg_krb5_init(char *PQerrormsg, struct krb5_info * info)
        retval = krb5_unparse_name(info->pg_krb5_context, info->pg_krb5_client, &(info->pg_krb5_name));
        if (retval)
        {
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 "pg_krb5_init: krb5_unparse_name: %s\n",
                                 error_message(retval));
                krb5_free_principal(info->pg_krb5_context, info->pg_krb5_client);
@@ -237,7 +237,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *s
 
        if (!hostname)
        {
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 "pg_krb5_sendauth: hostname must be specified for Kerberos authentication\n");
                return STATUS_ERROR;
        }
@@ -250,7 +250,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *s
                                                                         KRB5_NT_SRV_HST, &server);
        if (retval)
        {
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 "pg_krb5_sendauth: krb5_sname_to_principal: %s\n",
                                 error_message(retval));
                pg_krb5_destroy(&info);
@@ -266,7 +266,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *s
        {
                char            sebuf[256];
 
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 libpq_gettext("could not set socket to blocking mode: %s\n"), pqStrerror(errno, sebuf, sizeof(sebuf)));
                krb5_free_principal(info.pg_krb5_context, server);
                pg_krb5_destroy(&info);
@@ -284,11 +284,11 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *s
                if (retval == KRB5_SENDAUTH_REJECTED && err_ret)
                {
 #if defined(HAVE_KRB5_ERROR_TEXT_DATA)
-                       snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                       snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                  libpq_gettext("Kerberos 5 authentication rejected: %*s\n"),
                                         (int) err_ret->text.length, err_ret->text.data);
 #elif defined(HAVE_KRB5_ERROR_E_DATA)
-                       snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                       snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                  libpq_gettext("Kerberos 5 authentication rejected: %*s\n"),
                                         (int) err_ret->e_data->length,
                                         (const char *) err_ret->e_data->data);
@@ -298,7 +298,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *s
                }
                else
                {
-                       snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                       snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                         "krb5_sendauth: %s\n", error_message(retval));
                }
 
@@ -314,7 +314,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *s
        {
                char            sebuf[256];
 
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                libpq_gettext("could not restore non-blocking mode on socket: %s\n"),
                                 pqStrerror(errno, sebuf, sizeof(sebuf)));
                ret = STATUS_ERROR;
@@ -376,14 +376,14 @@ pg_local_sendauth(char *PQerrormsg, PGconn *conn)
        {
                char            sebuf[256];
 
-               snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+               snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 "pg_local_sendauth: sendmsg: %s\n",
                                 pqStrerror(errno, sebuf, sizeof(sebuf)));
                return STATUS_ERROR;
        }
        return STATUS_OK;
 #else
-       snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+       snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                         libpq_gettext("SCM_CRED authentication method not supported\n"));
        return STATUS_ERROR;
 #endif
@@ -469,7 +469,7 @@ pg_fe_sendauth(AuthRequest areq, PGconn *conn, const char *hostname,
                        break;
 
                case AUTH_REQ_KRB4:
-                       snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                       snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 libpq_gettext("Kerberos 4 authentication not supported\n"));
                        return STATUS_ERROR;
 
@@ -486,7 +486,7 @@ pg_fe_sendauth(AuthRequest areq, PGconn *conn, const char *hostname,
                        pgunlock_thread();
                        break;
 #else
-                       snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                       snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                 libpq_gettext("Kerberos 5 authentication not supported\n"));
                        return STATUS_ERROR;
 #endif
@@ -496,13 +496,13 @@ pg_fe_sendauth(AuthRequest areq, PGconn *conn, const char *hostname,
                case AUTH_REQ_PASSWORD:
                        if (password == NULL || *password == '\0')
                        {
-                               (void) snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                               (void) snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                                                PQnoPasswordSupplied);
                                return STATUS_ERROR;
                        }
                        if (pg_password_sendauth(conn, password, areq) != STATUS_OK)
                        {
-                               (void) snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                               (void) snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                                         "fe_sendauth: error sending password authentication\n");
                                return STATUS_ERROR;
                        }
@@ -514,7 +514,7 @@ pg_fe_sendauth(AuthRequest areq, PGconn *conn, const char *hostname,
                        break;
 
                default:
-                       snprintf(PQerrormsg, PQERRORMSG_LENGTH,
+                       snprintf(PQerrormsg, INITIAL_EXPBUFFER_SIZE,
                        libpq_gettext("authentication method %u not supported\n"), areq);
                        return STATUS_ERROR;
        }

diff --git a/src/interfaces/libpq/fe-connect.c b/src/interfaces/libpq/fe-connect.c
index 663076cf66859596fc6f8147c2c3093c239a74c0..d2a7c945a146c901fa2a1b76db40122fb18ba003 100644 (file)
--- a/src/interfaces/libpq/fe-connect.c
+++ b/src/interfaces/libpq/fe-connect.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.339.2.1 2007/03/08 19:27:48 mha Exp $
+ *       $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.339.2.2 2007/07/23 18:13:09 mha Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2977,7 +2977,7 @@ conninfo_parse(const char *conninfo, PQExpBuffer errorMessage)
        char       *cp2;
        PQconninfoOption *options;
        PQconninfoOption *option;
-       char            errortmp[PQERRORMSG_LENGTH];
+       char            errortmp[INITIAL_EXPBUFFER_SIZE];
 
        /* Make a working copy of PQconninfoOptions */
        options = malloc(sizeof(PQconninfoOptions));

diff --git a/src/interfaces/libpq/libpq-int.h b/src/interfaces/libpq/libpq-int.h
index e69200f5af9974e249c97415b5ae04b9b9d1a7e0..7ffe8a49bd180e831a042ccc47f47fb8c0f20eb1 100644 (file)
--- a/src/interfaces/libpq/libpq-int.h
+++ b/src/interfaces/libpq/libpq-int.h
@@ -12,7 +12,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/interfaces/libpq/libpq-int.h,v 1.116 2006/10/04 00:30:13 momjian Exp $
+ * $PostgreSQL: pgsql/src/interfaces/libpq/libpq-int.h,v 1.116.2.1 2007/07/23 18:13:10 mha Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -57,7 +57,6 @@ typedef int ssize_t;                  /* ssize_t doesn't exist in VC (at least not
 /*
  * POSTGRES backend dependent Constants.
  */
-#define PQERRORMSG_LENGTH 1024
 #define CMDSTATUS_LEN 40
 
 /*