back-sock by Brian Candler (B.Candler@pobox.com) ITS#4094 (untested)

[openldap] / servers / slapd / back-sock / opensock.c

diff --git a/servers/slapd/back-sock/opensock.c b/servers/slapd/back-sock/opensock.c
new file mode 100644 (file)
index 0000000..64d3231
--- /dev/null
+++ b/servers/slapd/back-sock/opensock.c
@@ -0,0 +1,66 @@
+/* opensock.c - open a unix domain socket */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2007 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/errno.h>
+#include <ac/string.h>
+#include <ac/socket.h>
+#include <ac/unistd.h>
+
+#include "slap.h"
+#include "back-sock.h"
+
+/*
+ * FIXME: count the number of concurrent open sockets (since each thread
+ * may open one). Perhaps block here if a soft limit is reached, and fail
+ * if a hard limit reached
+ */
+
+FILE *
+opensock(
+    const char *sockpath
+)
+{
+       int     fd;
+       FILE    *fp;
+       struct sockaddr_un sockun;
+
+       fd = socket(PF_UNIX, SOCK_STREAM, 0);
+       if ( fd < 0 ) {
+               Debug( LDAP_DEBUG_ANY, "socket create failed\n", 0, 0, 0 );
+               return( NULL );
+       }
+
+       sockun.sun_family = AF_UNIX;
+       sprintf(sockun.sun_path, "%.*s", (int)(sizeof(sockun.sun_path)-1),
+               sockpath);
+       if ( connect( fd, (struct sockaddr *)&sockun, sizeof(sockun) ) < 0 ) {
+               Debug( LDAP_DEBUG_ANY, "socket connect(%s) failed\n",
+                       sockpath ? sockpath : "<null>", 0, 0 );
+               return( NULL );
+       }
+
+       if ( ( fp = fdopen( fd, "r+" ) ) == NULL ) {
+               Debug( LDAP_DEBUG_ANY, "fdopen failed\n", 0, 0, 0 );
+               close( fd );
+               return( NULL );
+       }
+
+       return( fp );
+}