Merge branch 'collectd-4.10' into collectd-5.1

[collectd.git] / src / network.c

diff --git a/src/network.c b/src/network.c
index 0b299d6..4a54246 100644 (file)
--- a/src/network.c
+++ b/src/network.c
@@ -1,6 +1,6 @@
 /**
  * collectd - src/network.c
- * Copyright (C) 2005-2010  Florian octo Forster
+ * Copyright (C) 2005-2013  Florian octo Forster
  * Copyright (C) 2009       Aman Gupta
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -18,7 +18,7 @@
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
  * Authors:
- *   Florian octo Forster <octo at verplant.org>
+ *   Florian octo Forster <octo at collectd.org>
  *   Aman Gupta <aman at tmm1.net>
  **/
 
@@ -59,7 +59,23 @@
 
 #if HAVE_LIBGCRYPT
 # include <pthread.h>
+# if defined __APPLE__
+/* default xcode compiler throws warnings even when deprecated functionality
+ * is not used. -Werror breaks the build because of erroneous warnings.
+ * http://stackoverflow.com/questions/10556299/compiler-warnings-with-libgcrypt-v1-5-0/12830209#12830209
+ */
+#  pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+# endif
+/* FreeBSD's copy of libgcrypt extends the existing GCRYPT_NO_DEPRECATED
+ * to properly hide all deprecated functionality.
+ * http://svnweb.freebsd.org/ports/head/security/libgcrypt/files/patch-src__gcrypt.h.in
+ */
+# define GCRYPT_NO_DEPRECATED
 # include <gcrypt.h>
+# if defined __APPLE__
+/* Re enable deprecation warnings */
+#  pragma GCC diagnostic warning "-Wdeprecated-declarations"
+# endif
 GCRY_THREAD_OPTION_PTHREAD_IMPL;
 #endif
 
@@ -477,6 +493,20 @@ static int network_dispatch_notification (notification_t *n) /* {{{ */
 } /* }}} int network_dispatch_notification */
 
 #if HAVE_LIBGCRYPT
+static void network_init_gcrypt (void) /* {{{ */
+{
+  /* http://lists.gnupg.org/pipermail/gcrypt-devel/2003-August/000458.html
+   * Because you can't know in a library whether another library has
+   * already initialized the library */
+  if (gcry_control (GCRYCTL_ANY_INITIALIZATION_P))
+    return;
+
+  gcry_check_version (NULL); /* before calling any other functions */
+  gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
+  gcry_control (GCRYCTL_INIT_SECMEM, 32768);
+  gcry_control (GCRYCTL_INITIALIZATION_FINISHED);
+} /* }}} void network_init_gcrypt */
+
 static gcry_cipher_hd_t network_get_aes256_cypher (sockent_t *se, /* {{{ */
     const void *iv, size_t iv_size, const char *username)
 {
@@ -662,7 +692,7 @@ static int write_part_number (char **ret_buffer, int *ret_buffer_len,
 
        part_header_t pkg_head;
        uint64_t pkg_value;
-       
+
        int offset;
 
        packet_len = sizeof (pkg_head) + sizeof (pkg_value);
@@ -2013,6 +2043,8 @@ static int sockent_open (sockent_t *se) /* {{{ */
        {
                if (se->data.client.security_level > SECURITY_LEVEL_NONE)
                {
+                       network_init_gcrypt ();
+
                        if ((se->data.client.username == NULL)
                                        || (se->data.client.password == NULL))
                        {
@@ -2031,6 +2063,8 @@ static int sockent_open (sockent_t *se) /* {{{ */
        {
                if (se->data.server.security_level > SECURITY_LEVEL_NONE)
                {
+                       network_init_gcrypt ();
+
                        if (se->data.server.auth_file == NULL)
                        {
                                ERROR ("network plugin: Server socket with "
@@ -2718,7 +2752,7 @@ static int add_to_buffer (char *buffer, int buffer_size, /* {{{ */
                        return (-1);
                sstrncpy (vl_def->type_instance, vl->type_instance, sizeof (vl_def->type_instance));
        }
-       
+
        if (write_part_values (&buffer, &buffer_size, ds, vl) != 0)
                return (-1);
 
@@ -3355,9 +3389,7 @@ static int network_init (void)
        have_init = 1;
 
 #if HAVE_LIBGCRYPT
-       gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
-       gcry_control (GCRYCTL_INIT_SECMEM, 32768, 0);
-       gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
+       network_init_gcrypt ();
 #endif
 
        if (network_config_stats != 0)
@@ -3431,7 +3463,7 @@ static int network_init (void)
        return (0);
 } /* int network_init */
 
-/* 
+/*
  * The flush option of the network plugin cannot flush individual identifiers.
  * All the values are added to a buffer and sent when the buffer is full, the
  * requested value may or may not be in there, it's not worth finding out. We