Use srtp_shutdown when available

This allows the SRTP library to be shut down properly when the
functionality is offered by libsrtp.

Review: https://reviewboard.asterisk.org/r/2538/
(closes issue ASTERISK-21719)
........

Merged revisions 388768 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 388769 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@388770 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configure.ac

@@ -469,6 +469,7 @@ AST_EXT_LIB_SETUP_DEPENDENT([SPEEX_PREPROCESS], [speex_preprocess_ctl], [], [spe
 AST_EXT_LIB_SETUP([SQLITE], [SQLite], [sqlite])
 AST_EXT_LIB_SETUP([SQLITE3], [SQLite], [sqlite3])
 AST_EXT_LIB_SETUP([SRTP], [Secure RTP], [srtp])
+AST_EXT_LIB_SETUP_OPTIONAL([SRTP_SHUTDOWN], [SRTP Library Shutdown Function], [SRTP], [srtp])
 AST_EXT_LIB_SETUP([OPENSSL], [OpenSSL Secure Sockets Layer], [ssl])
 AST_EXT_LIB_SETUP([SUPPSERV], [mISDN Supplemental Services], [suppserv])
 AST_EXT_LIB_SETUP([FREETDS], [FreeTDS], [tds])
@@ -2179,6 +2180,7 @@ then
     CFLAGS="${saved_cflags}"
 fi
 
+AST_EXT_LIB_CHECK([SRTP_SHUTDOWN], [srtp], [srtp_shutdown], [srtp/srtp.h])
 
 for ver in 2.0 2.2 2.4 2.6; do
 	AST_PKG_CONFIG_CHECK([GMIME], gmime-$ver)

include/asterisk/autoconfig.h.in

@@ -294,7 +294,7 @@
 /* Define if your system has the GLOB_NOMAGIC headers. */
 #undef HAVE_GLOB_NOMAGIC
 
-/* Define to 1 if you have the GMime library. */
+/* Define if your system has the GMIME libraries. */
 #undef HAVE_GMIME
 
 /* Define to indicate the GSM library */
@@ -306,7 +306,7 @@
 /* Define to indicate that gsm.h has no prefix for its location */
 #undef HAVE_GSM_HEADER
 
-/* Define to 1 if you have the gtk2 library. */
+/* Define if your system has the GTK2 libraries. */
 #undef HAVE_GTK2
 
 /* Define to 1 if you have the Hoard Memory Allocator library. */
@@ -324,7 +324,7 @@
 /* Define to 1 if you have the Iksemel Jabber library. */
 #undef HAVE_IKSEMEL
 
-/* Define to 1 if you have the System iLBC library. */
+/* Define if your system has the ILBC libraries. */
 #undef HAVE_ILBC
 
 /* Define if your system has the UW IMAP Toolkit c-client library. */
@@ -376,7 +376,7 @@
 /* Define to 1 if you have the OpenLDAP library. */
 #undef HAVE_LDAP
 
-/* Define to 1 if you have the NetBSD Editline library library. */
+/* Define if your system has the LIBEDIT libraries. */
 #undef HAVE_LIBEDIT
 
 /* Define to 1 if you have the <libintl.h> header file. */
@@ -551,7 +551,7 @@
 /* Define to indicate presence of the pg_encoding_to_char API. */
 #undef HAVE_PGSQL_pg_encoding_to_char
 
-/* Define to 1 if you have the PJPROJECT library. */
+/* Define if your system has the PJPROJECT libraries. */
 #undef HAVE_PJPROJECT
 
 /* Define to 1 if your system defines IP_PKTINFO. */
@@ -765,6 +765,9 @@
 /* Define to 1 if you have the Secure RTP library. */
 #undef HAVE_SRTP
 
+/* Define to 1 if SRTP has the SRTP Library Shutdown Function feature. */
+#undef HAVE_SRTP_SHUTDOWN
+
 /* Define to 1 if you have the ISDN SS7 library. */
 #undef HAVE_SS7
 
@@ -854,19 +857,19 @@
 /* Define to 1 if you have the `strtoq' function. */
 #undef HAVE_STRTOQ
 
-/* Define to 1 if `ifr_ifru.ifru_hwaddr' is member of `struct ifreq'. */
+/* Define to 1 if `ifr_ifru.ifru_hwaddr' is a member of `struct ifreq'. */
 #undef HAVE_STRUCT_IFREQ_IFR_IFRU_IFRU_HWADDR
 
-/* Define to 1 if `uid' is member of `struct sockpeercred'. */
+/* Define to 1 if `uid' is a member of `struct sockpeercred'. */
 #undef HAVE_STRUCT_SOCKPEERCRED_UID
 
-/* Define to 1 if `st_blksize' is member of `struct stat'. */
+/* Define to 1 if `st_blksize' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BLKSIZE
 
-/* Define to 1 if `cr_uid' is member of `struct ucred'. */
+/* Define to 1 if `cr_uid' is a member of `struct ucred'. */
 #undef HAVE_STRUCT_UCRED_CR_UID
 
-/* Define to 1 if `uid' is member of `struct ucred'. */
+/* Define to 1 if `uid' is a member of `struct ucred'. */
 #undef HAVE_STRUCT_UCRED_UID
 
 /* Define to 1 if you have the mISDN Supplemental Services library. */
@@ -1144,12 +1147,12 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
-/* Define to 1 if the C compiler supports function prototypes. */
-#undef PROTOTYPES
-
 /* Define to necessary symbol if this constant uses a non-standard name on
    your system. */
 #undef PTHREAD_CREATE_JOINABLE
@@ -1169,11 +1172,6 @@
 /* Define to the type of arg 5 for `select'. */
 #undef SELECT_TYPE_ARG5
 
-/* Define to 1 if the `setvbuf' function takes the buffering type as its
-   second argument and the buffer pointer as the third, as on System V before
-   release 3. */
-#undef SETVBUF_REVERSED
-
 /* The size of `char *', as computed by sizeof. */
 #undef SIZEOF_CHAR_P
 
@@ -1209,24 +1207,39 @@
 /* Define to a type of the same size as fd_set.fds_bits[[0]] */
 #undef TYPEOF_FD_SET_FDS_BITS
 
-/* Define to 1 if on AIX 3.
-   System headers sometimes define this.
-   We just want to avoid a redefinition error message.  */
+/* Enable extensions on AIX 3, Interix.  */
 #ifndef _ALL_SOURCE
 # undef _ALL_SOURCE
 #endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+
 
 /* Define to 1 if running on Darwin. */
 #undef _DARWIN_UNLIMITED_SELECT
 
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
 /* Number of bits in a file offset, on hosts where this is settable. */
 #undef _FILE_OFFSET_BITS
 
-/* Enable GNU extensions on systems that have them.  */
-#ifndef _GNU_SOURCE
-# undef _GNU_SOURCE
-#endif
-
 /* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */
 #undef _LARGEFILE_SOURCE
 
@@ -1243,20 +1256,6 @@
 /* Define to 1 if you need to in order for `stat' and other things to work. */
 #undef _POSIX_SOURCE
 
-/* Enable extensions on Solaris.  */
-#ifndef __EXTENSIONS__
-# undef __EXTENSIONS__
-#endif
-#ifndef _POSIX_PTHREAD_SEMANTICS
-# undef _POSIX_PTHREAD_SEMANTICS
-#endif
-#ifndef _TANDEM_SOURCE
-# undef _TANDEM_SOURCE
-#endif
-
-/* Define like PROTOTYPES; this can be used by system headers. */
-#undef __PROTOTYPES
-
 /* Define to empty if `const' does not conform to ANSI C. */
 #undef const
 

res/res_srtp.c

@@ -546,6 +546,9 @@ static void res_srtp_shutdown(void)
 {
 	srtp_install_event_handler(NULL);
 	ast_rtp_engine_unregister_srtp();
+#ifdef HAVE_SRTP_SHUTDOWN
+	srtp_shutdown();
+#endif
 	g_initialized = 0;
 }