Merge the pimp_my_sip branch into trunk.

The pimp_my_sip branch is being merged at this point because
it offers basic functionality, and from an API standpoint, things
are complete.

SIP work is *not* feature-complete; however, with the completion
of the SUBSCRIBE/NOTIFY API, all APIs (except a PUBLISH API) have
been created, and thus it is possible for developers to attempt
to create new SIP work.

API documentation can be found in the doxygen in the code, but
usability documentation is still lacking.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@386540 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_sip_outbound_authenticator_digest.c

@@ -0,0 +1,110 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2013, Digium, Inc.
+ *
+ * Mark Michelson <mmichelson@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+#include "asterisk.h"
+
+#include <pjsip.h>
+
+#include "asterisk/res_sip.h"
+#include "asterisk/logger.h"
+#include "asterisk/module.h"
+#include "asterisk/strings.h"
+
+static int set_outbound_authentication_credentials(pjsip_auth_clt_sess *auth_sess, const char **auth_strs, size_t num_auths)
+{
+	struct ast_sip_auth **auths = ast_alloca(num_auths * sizeof(*auths));
+	pjsip_cred_info *auth_creds = ast_alloca(num_auths * sizeof(*auth_creds));
+	int res = 0;
+	int i;
+
+	if (ast_sip_retrieve_auths(auth_strs, num_auths, auths)) {
+		res = -1;
+		goto cleanup;
+	}
+
+	for (i = 0; i < num_auths; ++i) {
+		pj_cstr(&auth_creds[i].realm, auths[i]->realm);
+		pj_cstr(&auth_creds[i].username, auths[i]->auth_user);
+		pj_cstr(&auth_creds[i].scheme, "digest");
+		switch (auths[i]->type) {
+		case AST_SIP_AUTH_TYPE_USER_PASS:
+			pj_cstr(&auth_creds[i].data, auths[i]->auth_pass);
+			auth_creds[i].data_type = PJSIP_CRED_DATA_PLAIN_PASSWD;
+			break;
+		case AST_SIP_AUTH_TYPE_MD5:
+			pj_cstr(&auth_creds[i].data, auths[i]->md5_creds);
+			auth_creds[i].data_type = PJSIP_CRED_DATA_DIGEST;
+			break;
+		}
+	}
+
+	pjsip_auth_clt_set_credentials(auth_sess, num_auths, auth_creds);
+
+cleanup:
+	ast_sip_cleanup_auths(auths, num_auths);
+	return res;
+}
+
+static int digest_create_request_with_auth(const char **auths, size_t num_auths, pjsip_rx_data *challenge,
+		pjsip_transaction *tsx, pjsip_tx_data **new_request)
+{
+	pjsip_auth_clt_sess auth_sess;
+
+	if (pjsip_auth_clt_init(&auth_sess, ast_sip_get_pjsip_endpoint(),
+				tsx->pool, 0) != PJ_SUCCESS) {
+		ast_log(LOG_WARNING, "Failed to initialize client authentication session\n");
+		return -1;
+	}
+
+	if (set_outbound_authentication_credentials(&auth_sess, auths, num_auths)) {
+		ast_log(LOG_WARNING, "Failed to set authentication credentials\n");
+		return -1;
+	}
+
+	if (pjsip_auth_clt_reinit_req(&auth_sess, challenge,
+				tsx->last_tx, new_request) != PJ_SUCCESS) {
+		ast_log(LOG_WARNING, "Failed to create new request with authentication credentials\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static struct ast_sip_outbound_authenticator digest_authenticator = {
+	.create_request_with_auth = digest_create_request_with_auth,
+};
+
+static int load_module(void)
+{
+	if (ast_sip_register_outbound_authenticator(&digest_authenticator)) {
+		return AST_MODULE_LOAD_DECLINE;
+	}
+	return AST_MODULE_LOAD_SUCCESS;
+}
+
+static int unload_module(void)
+{
+	ast_sip_unregister_outbound_authenticator(&digest_authenticator);
+	return 0;
+}
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "SIP authentication resource",
+		.load = load_module,
+		.unload = unload_module,
+		.load_pri = AST_MODPRI_CHANNEL_DEPEND,
+);