[asterisk-commits] kharwell: branch 12 r399339 - /branches/12/res/res_pjsip_messaging.c

[SVN commits to the Asterisk project]

Author: kharwell
Date: Wed Sep 18 09:34:25 2013
New Revision: 399339

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=399339
Log:
res_pjsip_messaging: Register message technology as pjsip

pjsip's message technology was being registered as 'sip', which was causing it
to not load due it conflicting with chan_sip's registered 'sip' technology for
messaging.  It now registers as 'pjsip'.  However, due to this change the "to"
field for outgoing pjsip messages need to be prefixed with 'pjsip:' instead of
'sip:'.  Incoming messages to res_pjsip_messaging will automatically have their
"to" fields altered in order to accommodate the change.  Outgoing messages also
handle changing it back to 'sip' before being sent so the pjsip library will
properly handle it.

(closes issue ASTERISK-22445)
Reported by: Matt Jordan
Review: https://reviewboard.asterisk.org/r/2833/

Modified:
    branches/12/res/res_pjsip_messaging.c

Modified: branches/12/res/res_pjsip_messaging.c
URL: http://svnview.digium.com/svn/asterisk/branches/12/res/res_pjsip_messaging.c?view=diff&rev=399339&r1=399338&r2=399339
==============================================================================
--- branches/12/res/res_pjsip_messaging.c (original)
+++ branches/12/res/res_pjsip_messaging.c Wed Sep 18 09:34:25 2013
@@ -135,6 +135,8 @@
 
 	if ((*uri = strchr(name, '/'))) {
 		*(*uri)++ = '\0';
+	} else if ((*uri = strchr(name, '@'))) {
+		*(*uri) = '\0';
 	}
 
 	/* endpoint is required */
@@ -163,7 +165,6 @@
  */
 static void update_from(pjsip_tx_data *tdata, const char *from)
 {
-	/* static const pj_str_t hname = { "From", 4 }; */
 	pjsip_name_addr *from_name_addr;
 	pjsip_sip_uri *from_uri;
 	pjsip_uri *parsed;
@@ -206,6 +207,49 @@
 		}
 		pj_strdup2(tdata->pool, &from_uri->user, uri);
 	}
+}
+
+static char *scheme_sip_to_pjsip(pjsip_rx_data *rdata, char *buf, unsigned int size)
+{
+	char *res = buf;
+	pjsip_name_addr *name_addr = (pjsip_name_addr *)rdata->msg_info.to->uri;
+	pjsip_sip_uri *sip_uri = pjsip_uri_get_uri(name_addr->uri);
+
+	const pj_str_t *scheme = pjsip_uri_get_scheme(rdata->msg_info.to->uri);
+	size_t size_scheme = pj_strlen(scheme);
+	size_t size_user = pj_strlen(&sip_uri->user);
+	size_t size_host = pj_strlen(&sip_uri->host);
+
+	/* 5 = count of 'p' 'j' ':' '@' '\0' */
+	if (size < size_scheme + size_user + size_host + 5) {
+		/* won't fit */
+		ast_log(LOG_WARNING, "Unable to handle MESSAGE- incoming uri "
+			"too large for given buffer\n");
+		return NULL;
+	}
+
+	*buf++ = 'p';
+	*buf++ = 'j';
+
+	memcpy(buf, pj_strbuf(scheme), size_scheme);
+	buf += size_scheme;
+	*buf++ = ':';
+
+	memcpy(buf, pj_strbuf(&sip_uri->user), size_user);
+	buf += size_user;
+	*buf++ = '@';
+
+	memcpy(buf, pj_strbuf(&sip_uri->host), size_host);
+	buf += size_host;
+	*buf = '\0';
+
+	return res;
+}
+
+static char *scheme_pjsip_to_sip(const char *uri)
+{
+	ast_assert(!strncmp(uri, "pjsip", 5));
+	return ast_strdup(uri + 2);
 }
 
 /*!
@@ -273,8 +317,13 @@
 			}
 			sprintf((char*)value, "%d", max_forwards);
 			ast_sip_add_header(tdata, name, value);
-		}
-		else if (!is_msg_var_blocked(name)) {
+		} else if (!strcasecmp(name, "To")) {
+			char *to = scheme_pjsip_to_sip(value);
+			if (to) {
+				ast_sip_add_header(tdata, name, to);
+				ast_free(to);
+			}
+		} else if (!is_msg_var_blocked(name)) {
 			ast_sip_add_header(tdata, name, value);
 		}
 		ast_msg_var_unref_current(i);
@@ -283,7 +332,7 @@
 }
 
 /*!
- * \internal  
+ * \internal
  * \brief Copies any other request header data over to ast_msg structure.
  *
  * \param rdata The SIP request
@@ -373,11 +422,7 @@
 	CHECK_RES(ast_msg_set_exten(msg, "%s", buf));
 
 	/* to header */
-	name_addr = (pjsip_name_addr *)rdata->msg_info.to->uri;
-	if ((size = pjsip_uri_print(PJSIP_URI_IN_FROMTO_HDR, name_addr, buf, sizeof(buf)-1)) > 0) {
-		buf[size] = '\0';
-		CHECK_RES(ast_msg_set_to(msg, "%s", buf));
-	}
+	CHECK_RES(ast_msg_set_to(msg, "%s", scheme_sip_to_pjsip(rdata, buf, sizeof(buf))));
 
 	/* from header */
 	name_addr = (pjsip_name_addr *)rdata->msg_info.from->uri;
@@ -439,7 +484,7 @@
 	/* typecast to suppress const warning */
 	mdata->msg = ast_msg_ref((struct ast_msg*)msg);
 
-	mdata->to = ast_strdup(to);
+	mdata->to = scheme_pjsip_to_sip(to);
 	mdata->from = ast_strdup(from);
 
 	/* sometimes from can still contain the tag at this point, so remove it */
@@ -509,7 +554,7 @@
 }
 
 static const struct ast_msg_tech msg_tech = {
-	.name = "sip",
+	.name = "pjsip",
 	.msg_send = sip_msg_send,
 };