MFB: Make quote() in PostgreSQL use PQescapeByteaConn() whenever possible

for binary strings.

ext/pdo_pgsql/config.m4

@@ -83,6 +83,7 @@ if test "$PHP_PDO_PGSQL" != "no"; then
   LDFLAGS="$LDFLAGS -L$PGSQL_LIBDIR"
   AC_CHECK_LIB(pq, PQescapeString,AC_DEFINE(HAVE_PQESCAPE,1,[PostgreSQL 7.2.0 or later]))
   AC_CHECK_LIB(pq, PQescapeStringConn, AC_DEFINE(HAVE_PQESCAPE_CONN,1,[PostgreSQL 8.1.4 or later]))
+  AC_CHECK_LIB(pq, PQescapeByteaConn, AC_DEFINE(HAVE_PQESCAPE_BYTEA_CONN,1,[PostgreSQL 8.1.4 or later]))
   AC_CHECK_LIB(pq, PQsetnonblocking,AC_DEFINE(HAVE_PQSETNONBLOCKING,1,[PostgreSQL 7.0.x or later]))
   AC_CHECK_LIB(pq, PQcmdTuples,AC_DEFINE(HAVE_PQCMDTUPLES,1,[Broken libpq under windows]))
   AC_CHECK_LIB(pq, PQoidValue,AC_DEFINE(HAVE_PQOIDVALUE,1,[Older PostgreSQL]))

ext/pdo_pgsql/pgsql_driver.c

@@ -251,11 +251,16 @@ static long pgsql_handle_doer(pdo_dbh_t *dbh, const char *sql, long sql_len TSRM
 static int pgsql_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, int unquotedlen, char **quoted, int *quotedlen, enum pdo_param_type paramtype TSRMLS_DC)
 {
 	unsigned char *escaped;
+	pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
 	
 	switch (paramtype) {
 		case PDO_PARAM_LOB:
 			/* escapedlen returned by PQescapeBytea() accounts for trailing 0 */
+#ifdef HAVE_PQESCAPE_BYTEA_CONN
+			escaped = PQescapeByteaConn(H->server, unquoted, unquotedlen, quotedlen);
+#else
 			escaped = PQescapeBytea(unquoted, unquotedlen, quotedlen);
+#endif
 			*quotedlen += 1;
 			*quoted = emalloc(*quotedlen + 1);
 			memcpy((*quoted)+1, escaped, *quotedlen-2);
@@ -264,9 +269,7 @@ static int pgsql_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, int unquote
 			(*quoted)[*quotedlen] = '\0';
 			free(escaped);
 			break;
-		default: {
-			pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
-
+		default:
 			*quoted = safe_emalloc(2, unquotedlen, 3);
 			(*quoted)[0] = '\'';
 #ifndef HAVE_PQESCAPE_CONN
@@ -277,7 +280,6 @@ static int pgsql_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, int unquote
 			(*quoted)[*quotedlen + 1] = '\'';
 			(*quoted)[*quotedlen + 2] = '\0';
 			*quotedlen += 2;
-		}
 	}
 	return 1;
 }