From 1a477ecb462094ad9e13320a9234716ead038b9c Mon Sep 17 00:00:00 2001
From: Sebastian Harl <sh@tokkee.org>
Date: Sat, 23 Nov 2013 15:54:26 +0100
Subject: [PATCH] amqp plugin: Added support for rabbitmq-c 0.4.x.

Upstream introduced a new socket interface and deprecated the old one. This
leads to compiler errors when using GCC and -Werror.
---
 configure.in | 32 ++++++++++++++++++++++++++++++++
 src/amqp.c   | 51 ++++++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 80 insertions(+), 3 deletions(-)

diff --git a/configure.in b/configure.in
index ff791d6c..81b26116 100644
--- a/configure.in
+++ b/configure.in
@@ -3528,6 +3528,38 @@ fi
 CPPFLAGS="$SAVE_CPPFLAGS"
 LDFLAGS="$SAVE_LDFLAGS"
 AM_CONDITIONAL(BUILD_WITH_LIBRABBITMQ, test "x$with_librabbitmq" = "xyes")
+
+with_amqp_tcp_socket="no"
+if test "x$with_librabbitmq" = "xyes"
+then
+	SAVE_CPPFLAGS="$CPPFLAGS"
+	SAVE_LDFLAGS="$LDFLAGS"
+	CPPFLAGS="$CPPFLAGS $with_librabbitmq_cppflags"
+	LDFLAGS="$LDFLAGS $with_librabbitmq_ldflags -lrabbitmq"
+
+	AC_CHECK_HEADERS(amqp_tcp_socket.h amqp_socket.h)
+	AC_CHECK_FUNC(amqp_tcp_socket_new, [with_amqp_tcp_socket="yes"], [with_amqp_tcp_socket="no"])
+	if test "x$with_amqp_tcp_socket" = "xyes"
+	then
+		AC_DEFINE(HAVE_AMQP_TCP_SOCKET, 1,
+				[Define if librabbitmq provides the new TCP socket interface.])
+	fi
+
+	AC_CHECK_DECLS(amqp_socket_close,
+				[amqp_socket_close_decl="yes"], [amqp_socket_close_decl="no"],
+				[[
+#include <amqp.h>
+#ifdef HAVE_AMQP_TCP_SOCKET_H
+# include <amqp_tcp_socket.h>
+#endif
+#ifdef HAVE_AMQP_SOCKET_H
+# include <amqp_socket.h>
+#endif
+				]])
+
+	CPPFLAGS="$SAVE_CPPFLAGS"
+	LDFLAGS="$SAVE_LDFLAGS"
+fi
 # }}}
 
 # --with-librouteros {{{
diff --git a/src/amqp.c b/src/amqp.c
index 767a8776..bebaea7c 100644
--- a/src/amqp.c
+++ b/src/amqp.c
@@ -38,6 +38,18 @@
 #include <amqp.h>
 #include <amqp_framing.h>
 
+#ifdef HAVE_AMQP_TCP_SOCKET_H
+# include <amqp_tcp_socket.h>
+#endif
+#ifdef HAVE_AMQP_SOCKET_H
+# include <amqp_socket.h>
+#endif
+#if defined HAVE_DECL_AMQP_SOCKET_CLOSE && !HAVE_DECL_AMQP_SOCKET_CLOSE
+/* rabbitmq-c does not currently ship amqp_socket.h
+ * and, thus, does not define this function. */
+int amqp_socket_close(amqp_socket_t *);
+#endif
+
 /* Defines for the delivery mode. I have no idea why they're not defined by the
  * library.. */
 #define CAMQP_DM_VOLATILE   1
@@ -390,8 +402,12 @@ static int camqp_setup_queue (camqp_config_t *conf) /* {{{ */
 static int camqp_connect (camqp_config_t *conf) /* {{{ */
 {
     amqp_rpc_reply_t reply;
-    int sockfd;
     int status;
+#ifdef HAVE_AMQP_TCP_SOCKET
+    amqp_socket_t *socket;
+#else
+    int sockfd;
+#endif
 
     if (conf->connection != NULL)
         return (0);
@@ -403,6 +419,34 @@ static int camqp_connect (camqp_config_t *conf) /* {{{ */
         return (ENOMEM);
     }
 
+#ifdef HAVE_AMQP_TCP_SOCKET
+# define CLOSE_SOCKET() amqp_socket_close (socket)
+    /* TODO: add support for SSL using amqp_ssl_socket_new
+     *       and related functions */
+    socket = amqp_tcp_socket_new (conf->connection);
+    if (! socket)
+    {
+        ERROR ("amqp plugin: amqp_tcp_socket_new failed.");
+        amqp_destroy_connection (conf->connection);
+        conf->connection = NULL;
+        return (ENOMEM);
+    }
+
+    status = amqp_socket_open (socket, CONF(conf, host), conf->port);
+    if (status < 0)
+    {
+        char errbuf[1024];
+        status *= -1;
+        ERROR ("amqp plugin: amqp_socket_open failed: %s",
+                sstrerror (status, errbuf, sizeof (errbuf)));
+        CLOSE_SOCKET ();
+        amqp_destroy_connection (conf->connection);
+        conf->connection = NULL;
+        return (status);
+    }
+#else /* HAVE_AMQP_TCP_SOCKET */
+# define CLOSE_SOCKET close(sockfd)
+    /* this interface is deprecated as of rabbitmq-c 0.4 */
     sockfd = amqp_open_socket (CONF(conf, host), conf->port);
     if (sockfd < 0)
     {
@@ -415,6 +459,7 @@ static int camqp_connect (camqp_config_t *conf) /* {{{ */
         return (status);
     }
     amqp_set_sockfd (conf->connection, sockfd);
+#endif
 
     reply = amqp_login (conf->connection, CONF(conf, vhost),
             /* channel max = */      0,
@@ -427,7 +472,7 @@ static int camqp_connect (camqp_config_t *conf) /* {{{ */
         ERROR ("amqp plugin: amqp_login (vhost = %s, user = %s) failed.",
                 CONF(conf, vhost), CONF(conf, user));
         amqp_destroy_connection (conf->connection);
-        close (sockfd);
+        CLOSE_SOCKET ();
         conf->connection = NULL;
         return (1);
     }
@@ -440,7 +485,7 @@ static int camqp_connect (camqp_config_t *conf) /* {{{ */
         ERROR ("amqp plugin: amqp_channel_open failed.");
         amqp_connection_close (conf->connection, AMQP_REPLY_SUCCESS);
         amqp_destroy_connection (conf->connection);
-        close(sockfd);
+        CLOSE_SOCKET ();
         conf->connection = NULL;
         return (1);
     }
-- 
2.11.0