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Bug #1870 New feature: support for pgsql listen/notify mechanism
Submitted: 1999-07-25 19:57 UTC Modified: 2002-06-16 08:35 UTC
From: bandit at freeside dot elte dot hu Assigned:
Status: Not a bug Package: PostgreSQL related
PHP Version: 3.0.11 OS: Linux
Private report: No CVE-ID: None
 [1999-07-25 19:57 UTC] bandit at freeside dot elte dot hu
diff -ur php-3.0.11/functions/pgsql.c php-3.0.11-ak/functions/pgsql.c
--- php-3.0.11/functions/pgsql.c	Mon Jul 26 01:31:14 1999
+++ php-3.0.11-ak/functions/pgsql.c	Mon Jul 26 01:31:25 1999
@@ -82,6 +82,8 @@
 	{"pg_loread",		php3_pgsql_lo_read,			NULL},
 	{"pg_lowrite",		php3_pgsql_lo_write,		NULL},
 	{"pg_loreadall",	php3_pgsql_lo_readall,		NULL},
+	{"pg_getnotify",	php3_pgsql_getnotify,		NULL},
+	{"pg_get_be_pid",	php3_pgsql_get_be_pid,		NULL},
 	{NULL, NULL, NULL}
 };
 
@@ -1491,6 +1493,110 @@
 }
 /* }}} */
 
+/* {{{ proto int pg_getnotify([int connection,] int block)
+   Retrieve a notify if there is one - block if blocking requested and there are no notifies readily available */
+void php3_pgsql_getnotify(INTERNAL_FUNCTION_PARAMETERS)
+{
+	pval *block,*pgsql_link;
+	int id,type,fd;
+	PGconn *pgsql;
+	PGnotify *notify;
+	fd_set rset;
+	
+	switch(ARG_COUNT(ht)) {
+		case 1:
+			if (getParameters(ht, 1, &block)==FAILURE) {
+				RETURN_FALSE;
+			}
+			id = php3_pgsql_module.default_link;
+			break;
+		case 2:
+			if (getParameters(ht, 2, &pgsql_link, &block)==FAILURE) {
+				RETURN_FALSE;
+			}
+			convert_to_long(pgsql_link);
+			id = pgsql_link->value.lval;
+			break;
+		default:
+			WRONG_PARAM_COUNT;
+			break;
+	}
+	
+	pgsql = (PGconn *) php3_list_find(id,&type);
+	if (type!=php3_pgsql_module.le_link && type!=php3_pgsql_module.le_plink) {
+		php3_error(E_WARNING,"%d is not a PostgresSQL link index",id);
+		RETURN_FALSE;
+	}
+	
+	PQconsumeInput(pgsql);
+	notify=PQnotifies(pgsql);
+	
+	convert_to_long(block);
+	if (!notify && block->value.lval) {
+	
+		fd = PQsocket(pgsql);
+
+		FD_ZERO(&rset);
+		FD_SET(fd,&rset);
+
+		if ( select(fd+1,&rset,NULL,NULL,NULL) == -1 ) {
+			php3_error(E_WARNING,"select() returned an error: %s",strerror(errno));
+			RETURN_FALSE;
+		}
+		
+		PQconsumeInput(pgsql);
+		notify=PQnotifies(pgsql);
+	}
+	
+	if (notify) {
+	
+		array_init(return_value);
+		
+		add_assoc_string(return_value,"notifyname",notify->relname,1);
+		add_assoc_long(return_value,"pid",notify->be_pid);
+		
+		free(notify);
+		
+	} else {
+		RETURN_FALSE;
+	}
+}
+/* }}} */
+
+/* {{{ proto int pg_get_be_pid([int connection,])
+   Get backend PID e.g. for comparing with PID in received notify */
+void php3_pgsql_get_be_pid(INTERNAL_FUNCTION_PARAMETERS)
+{
+	pval *pgsql_link;
+	int id,type;
+	PGconn *pgsql;
+	
+	switch(ARG_COUNT(ht)) {
+		case 0:
+			id = php3_pgsql_module.default_link;
+			break;
+		case 1:
+			if (getParameters(ht, 1, &pgsql_link)==FAILURE) {
+				RETURN_FALSE;
+			}
+			convert_to_long(pgsql_link);
+			id = pgsql_link->value.lval;
+			break;
+		default:
+			WRONG_PARAM_COUNT;
+			break;
+	}
+	
+	pgsql = (PGconn *) php3_list_find(id,&type);
+	if (type!=php3_pgsql_module.le_link && type!=php3_pgsql_module.le_plink) {
+		php3_error(E_WARNING,"%d is not a PostgresSQL link index",id);
+		RETURN_FALSE;
+	}
+
+	RETURN_LONG(PQbackendPID(pgsql));
+
+}
+/* }}} */
 
 /* {{{ proto void php3_info_pgsql(void)
    Show info about the pgsql module */
Only in php-3.0.11-ak/functions/: pgsql.c.orig
diff -ur php-3.0.11/functions/php3_pgsql.h php-3.0.11-ak/functions/php3_pgsql.h
--- php-3.0.11/functions/php3_pgsql.h	Sun Apr 25 03:29:22 1999
+++ php-3.0.11-ak/functions/php3_pgsql.h	Mon Jul 26 01:01:46 1999
@@ -81,6 +81,8 @@
 extern void php3_pgsql_lo_read(INTERNAL_FUNCTION_PARAMETERS);
 extern void php3_pgsql_lo_write(INTERNAL_FUNCTION_PARAMETERS);
 extern void php3_pgsql_lo_readall(INTERNAL_FUNCTION_PARAMETERS);
+extern void php3_pgsql_getnotify(INTERNAL_FUNCTION_PARAMETERS);
+extern void php3_pgsql_get_be_pid(INTERNAL_FUNCTION_PARAMETERS);
 
 void php3_pgsql_do_connect(INTERNAL_FUNCTION_PARAMETERS,int persistent);
 int php3_pgsql_get_default_link(INTERNAL_FUNCTION_PARAMETERS);

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 [2002-06-16 08:35 UTC] sander@php.net
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