Snom patch: Last_ keywords extension

include/call.hpp

@@ -291,7 +291,7 @@ class call : virtual public task, virtual public listener, public virtual socket
 
     char * get_header_field_code(const char * msg, const char * code);
     char * get_last_header(const char * name);
-    char * get_last_request_uri();
+    char * get_last_header_uri(const char *name);
     unsigned long hash(const char * msg);
 
     typedef std::map <std::string, int> file_line_map;

include/sip_parser.hpp

@@ -26,6 +26,7 @@
 #define MAX_HEADER_LEN 2049
 
 char *get_call_id(const char *msg);
+char *get_param_tag(const char *msg, const char *name, const char *shortname);
 char *get_peer_tag(const char *msg);
 
 int get_method(char *msg);

regress/github-#0260/run

@@ -0,0 +1,34 @@
+#!/bin/sh
+# This regression test is a part of SIPp.
+# Author: Pietro Bertera, Snom Technology AG, 2016
+
+. "`dirname "$0"`/../functions"; init
+
+sippbg -m 1 -sf uas.xml -p 5070 -i 127.0.0.1 \
+    -timeout 4 -timeout_error -trace_logs \
+    -log_file log.log >/dev/null 2>&1
+
+job=$!
+
+sippfg -m 1 -sf uac.xml -i 127.0.0.1 -p 5060 127.0.0.1:5070 \
+    -timeout 4 -timeout_error >/dev/null 2>&1
+
+status=$?
+wait $job || status=1
+
+
+if test $status -ne 0; then
+    fail "process failure"
+elif ! grep -e ^LAST\ Contact\|Contact:\ \<sip:[email protected]:5060\> log.log > /dev/null; then
+    fail "[last_Contact] header not found"
+elif ! grep -e ^LAST\ Contact:\|Contact:\ \<sip:[email protected]:5060\> log.log > /dev/null; then
+    fail "[last_Contact:] header not found"
+elif ! grep -e ^LAST\ From:value\|\"Tom\ Jones\"\ \<sip:[email protected]\>\;tag=SIPpTag001$ log.log > /dev/null; then
+    fail "[last_From:value] not found"
+elif ! grep -e ^LAST\ To:uri\|sip:[email protected]$ log.log > /dev/null; then
+    fail "[last_To:uri] not found"
+elif ! grep -e ^LAST\ From:param.tag\|SIPpTag001$ log.log > /dev/null; then
+    fail "[last_From:param.tag] not found"
+fi
+
+ok

regress/github-#0260/uac.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE scenario SYSTEM "sipp.dtd">
+<scenario>
+  <send retrans="500" start_txn="invite">
+    <![CDATA[
+
+      INVITE sip:[service]@[remote_ip]:[remote_port] SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=justafake
+      From: "Tom Jones" <sip:[email protected]>;tag=SIPpTag00[call_number]
+      To: "Fromage" <sip:[email protected]>
+      Call-ID: [call_id]
+      CSeq: 1 INVITE
+      Contact: <sip:sipp@[local_ip]:[local_port]>
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <recv response="200" response_txn="invite" rrs="true"/>
+
+  <send retrans="500" ack_txn="invite">
+    <![CDATA[
+
+      ACK [next_url] SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=justafake
+      From: "Tom Jones" <sip:[email protected]>;tag=SIPpTag00[call_number]
+      To: "Fromage" <sip:[email protected]>[peer_tag_param]
+      Call-ID: [call_id]
+      CSeq: 1 ACK
+      Contact: sip:sipp@[local_ip]:[local_port]
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <recv request="BYE"/>
+
+  <send>
+    <![CDATA[
+
+      SIP/2.0 200 OK
+      [last_Via:]
+      [last_From:]
+      [last_To:]
+      [last_Call-ID:]
+      [last_CSeq:]
+      Contact: <sip:[local_ip]:[local_port];transport=[transport]>
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <timewait milliseconds="500"/>
+</scenario>

regress/github-#0260/uas.xml

@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE scenario SYSTEM "sipp.dtd">
+<scenario>
+  <recv request="INVITE"/>
+
+  <send retrans="500">
+    <![CDATA[
+
+      SIP/2.0 200 OK
+      [last_Contact]
+      [last_via]
+      From: [last_From:value]
+      To: [last_To:value];tag=[pid]SIPpTag00[call_number]
+      Call-ID: [last_Call-ID:value]
+      CSeq: [last_CSeq:value]
+      Contact: sip:sipp@[local_ip]:[local_port]
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <recv request="ACK" rrs="true">
+    <action>
+      <log message="LAST Contact|[last_Contact]" />
+      <log message="LAST Contact:|[last_Contact:]" />
+      <log message="LAST Contact:uri|[last_Contact:uri]"/>
+      <log message="LAST Via:value[last_Via:value]"/>
+      <log message="LAST From:value|[last_From:value]"/>
+      <log message="LAST To:value|[last_To:value]"/>
+      <log message="LAST To:uri|[last_To:uri]"/>
+      <log message="LAST From:param.tag|[last_From:param.tag]"/>
+    </action>
+  </recv>
+
+  <send retrans="500">
+    <![CDATA[
+
+      BYE [next_url] SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
+      From: [last_To:value]
+      To: [last_From:value]
+      Call-ID: [call_id]
+      CSeq: 2 BYE
+      Contact: sip:sipp@[local_ip]:[local_port]
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <recv response="200"/>
+
+  <timewait milliseconds="500"/>  
+</scenario>

src/call.cpp

@@ -920,36 +920,69 @@ char * call::get_last_header(const char * name)
         ERROR("call::get_last_header: Header to parse bigger than %d (%zu)", MAX_HEADER_LEN, strlen(name));
     }
 
+    char header_name[MAX_HEADER_LEN];
+    const char *sep = strrchr(name, ':');
+
+    if (!sep){ /* [last_Header] */
+        sprintf(header_name, "%s:", name);
+        return get_header(last_recv_msg, header_name, false);
+    }
+
+    snprintf(header_name, len - strlen(sep) + 2, name);
+
+    /* [last_Header:] */
     if (name[len - 1] == ':') {
         return get_header(last_recv_msg, name, false);
+    }
+    char *value = get_header(last_recv_msg, header_name, true);
+
+    if (!strcmp(sep, ":value")) { /* [last_Header:value] */
+        ; /* done */
+    } else if (!strcmp(sep, ":uri")) { /* [last_Header:uri] */
+        char * uri = get_last_header_uri(header_name);
+        int uri_len = strlen(uri);
+        memmove(value, uri, uri_len);
+        value[uri_len] = '\0';
+        free(uri);
+    } else if (!strcmp(sep, ":param.tag")) { /* [last_Header:param.tag] */
+        snprintf(header_name, len - 9, "%s", name);
+        char * last_tag = get_param_tag(last_recv_msg, header_name, "");
+        int last_tag_len = strlen(last_tag);
+        memmove(value, last_tag, last_tag_len);
+        value[last_tag_len] = '\0';
     } else {
-        char with_colon[MAX_HEADER_LEN];
-        sprintf(with_colon, "%s:", name);
-        return get_header(last_recv_msg, with_colon, false);
+        ERROR("Token %s not valid in %s", sep, name);
     }
+    return value;
 }
 
-/* Return the last request URI from the To header. On any error returns the
+/* Return the last request URI from the header. On any error returns the
  * empty string.  The caller must free the result. */
-char * call::get_last_request_uri()
+char * call::get_last_header_uri(const char *name)
 {
     char * tmp;
     char * tmp2;
     char * last_request_uri;
+    char * last_header;
     int tmp_len;
 
-    char * last_To = get_last_header("To:");
-    if (!last_To) {
+    if (!name || !strlen(name)) {
+        return strdup("");
+    }
+
+    last_header = get_last_header(name);
+
+    if (!last_header) {
         return strdup("");
     }
 
-    tmp = strchr(last_To, '<');
+    tmp = strchr(last_header, '<');
     if (!tmp) {
         return strdup("");
     }
     tmp++;
 
-    tmp2 = strchr(last_To, '>');
+    tmp2 = strchr(last_header, '>');
     if (!tmp2) {
         return strdup("");
     }
@@ -2201,7 +2234,7 @@ char* call::createSendingMessage(SendingMessage *src, int P_index, char *msg_buf
             }
             break;
         case E_Message_Last_Request_URI: {
-            char * last_request_uri = get_last_request_uri();
+            char * last_request_uri = get_last_header_uri("To:");
             dest += sprintf(dest, "%s", last_request_uri);
             free(last_request_uri);
             break;

src/sip_parser.cpp

@@ -70,17 +70,17 @@ static const char *internal_hdrend(const char *ptr);
 
 /*************************** Mini SIP parser (externals) ***************/
 
-char * get_peer_tag(const char *msg)
+char * get_param_tag(const char *msg, const char *name, const char *shortname)
 {
     static char   tag[MAX_HEADER_LEN];
     const char  * to_hdr;
     const char  * ptr;
     int           tag_i = 0;
 
     /* Find start of header */
-    to_hdr = internal_find_header(msg, "To", "t", true);
+    to_hdr = internal_find_header(msg, name, shortname, true);
     if (!to_hdr) {
-        WARNING("No valid To: header in reply");
+        WARNING("No valid %s: header in reply", name);
         return NULL;
     }
 
@@ -109,6 +109,11 @@ char * get_peer_tag(const char *msg)
     return tag;
 }
 
+char * get_peer_tag(const char *msg)
+{
+    return get_param_tag(msg, "To", "t");
+}
+
 char * get_header_content(const char* message, const char * name)
 {
     return get_header(message, name, true);