1 files changed, 60 insertions, 0 deletions
diff --git a/main/sip_api.c b/main/sip_api.c
new file mode 100644
index 000000000..b87a7fdbb
--- /dev/null
+++ b/main/sip_api.c
@@ -0,0 +1,60 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2012, 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 "asterisk/sip_api.h"
+#include "asterisk/logger.h"
+
+static const struct ast_sip_api_tech *api_provider;
+
+int ast_sipinfo_send(struct ast_channel *chan,
+		struct ast_variable *headers,
+		const char *content_type,
+		const char *content,
+		const char *useragent_filter)
+{
+	if (!api_provider) {
+		ast_log(LOG_WARNING, "Unable to send custom SIP INFO. No API provider registered\n");
+		return -1;
+	}
+
+	return api_provider->sipinfo_send(chan, headers, content_type, content, useragent_filter);
+}
+
+int ast_sip_api_provider_register(const struct ast_sip_api_tech *provider)
+{
+	if (api_provider) {
+		ast_log(LOG_WARNING, "SIP provider %s has already registered. Not registering provider %s\n",
+				api_provider->name, provider->name);
+		return -1;
+	}
+
+	if (provider->version != AST_SIP_API_VERSION) {
+		ast_log(LOG_WARNING, "SIP API provider version mismatch: Current version is %d but provider "
+				"uses version %d\n", AST_SIP_API_VERSION, provider->version);
+		return -1;
+	}
+
+	api_provider = provider;
+	return 0;
+}
+
+void ast_sip_api_provider_unregister(void)
+{
+	api_provider = NULL;
+}