modules/uac: avoid adding double quotes in uac_replace_* functions

- updated uac doc with a note and examples.

modules/uac/doc/uac_admin.xml

@@ -484,6 +484,10 @@ modparam("uac", "reg_contact_addr", "192.168.1.2:5080")
 			<para>
 			This function can be used from REQUEST_ROUTE and from BRANCH_ROUTE.
 			</para>
+			<para>NOTE: Previous versions of this function added double quotes automatically to 
+			display variable. That is no longer the case, if you expect that behavior, you will 
+			have to add the quotes by yourself.
+			</para>
 			<para>
 			If you set restore_mode to AUTO, the URI will be modified automatically in
 			all subsequent requests and replies in that dialog.
@@ -512,7 +516,8 @@ modparam("uac", "reg_contact_addr", "192.168.1.2:5080")
 # replace both display and uri
 uac_replace_from("$avp(s:display)","$avp(s:uri)");
 # replace only display and do not touch uri
-uac_replace_from("batman","");
+uac_replace_from("batman","");   # display is replaced with: batman
+uac_replace_from("\"batman\"","");  # display is replaced with: "batman"
 # remove display and replace uri
 uac_replace_from("","sip:[email protected]");
 # remove display and do not touch uri
@@ -580,6 +585,10 @@ uac_restore_from();
 			<para>
 			This function can be used from REQUEST_ROUTE and from BRANCH_ROUTE.
 			</para>
+			<para>NOTE: Previous versions of this function added double quotes automatically to 
+			display variable. That is no longer the case, if you expect that behavior, you will 
+			have to add the quotes by yourself.
+			</para>
 			<example>
 				<title><function>uac_replace_to</function> usage</title>
 				<programlisting format="linespecific">
@@ -587,7 +596,8 @@ uac_restore_from();
 # replace both display and uri
 uac_replace_to("$avp(display)","$avp(uri)");
 # replace only display and do not touch uri
-uac_replace_to("batman","");
+uac_replace_to("batman","");   # display is replaced with: batman
+uac_replace_to("\"batman\"","");  # display is replaced with: "batman"
 # remove display and replace uri
 uac_replace_to("","sip:[email protected]");
 # remove display and do not touch uri

modules/uac/uac.c

@@ -98,7 +98,6 @@ static int w_uac_auth(struct sip_msg* msg, char* str, char* str2);
 static int w_uac_reg_lookup(struct sip_msg* msg,  char* src, char* dst);
 static int w_uac_reg_request_to(struct sip_msg* msg,  char* src, char* mode_s);
 static int fixup_replace_uri(void** param, int param_no);
-static int fixup_replace_disp_uri(void** param, int param_no);
 static int mod_init(void);
 static void mod_destroy(void);
 static int child_init(int rank);
@@ -114,13 +113,13 @@ static pv_export_t mod_pvs[] = {
 
 /* Exported functions */
 static cmd_export_t cmds[]={
-	{"uac_replace_from",  (cmd_function)w_replace_from,  2, fixup_replace_disp_uri, 0,
+	{"uac_replace_from",  (cmd_function)w_replace_from,  2, fixup_replace_uri, 0,
 			REQUEST_ROUTE | BRANCH_ROUTE },
 	{"uac_replace_from",  (cmd_function)w_replace_from,  1, fixup_replace_uri, 0,
 			REQUEST_ROUTE | BRANCH_ROUTE },
 	{"uac_restore_from",  (cmd_function)w_restore_from,  0,                  0, 0,
 			REQUEST_ROUTE },
-	{"uac_replace_to",  (cmd_function)w_replace_to,  2, fixup_replace_disp_uri, 0,
+	{"uac_replace_to",  (cmd_function)w_replace_to,  2, fixup_replace_uri, 0,
 		 	REQUEST_ROUTE | BRANCH_ROUTE },
 	{"uac_replace_to",  (cmd_function)w_replace_to,  1, fixup_replace_uri, 0,
 			REQUEST_ROUTE | BRANCH_ROUTE },
@@ -415,51 +414,6 @@ static int fixup_replace_uri(void** param, int param_no)
 	return 0;
 }
 
-
-static int fixup_replace_disp_uri(void** param, int param_no)
-{
-	pv_elem_t *model;
-	char *p;
-	str s;
-
-	/* convert to str */
-	s.s = (char*)*param;
-	s.len = strlen(s.s);
-
-	model=NULL;
-	if (param_no==1)
-	{
-		if (s.len)
-		{
-			/* put " around display name */
-			p = (char*)pkg_malloc(s.len+3);
-			if (p==0)
-			{
-				LM_CRIT("no more pkg mem\n");
-				return E_OUT_OF_MEM;
-			}
-			p[0] = '\"';
-			memcpy(p+1, s.s, s.len);
-			p[s.len+1] = '\"';
-			p[s.len+2] = '\0';
-			pkg_free(s.s);
-			s.s = p;
-			s.len += 2;
-		}
-	}
-	if(pv_parse_format(&s ,&model)<0)
-	{
-		LM_ERR("wrong format [%s] for param no %d!\n", s.s, param_no);
-		pkg_free(s.s);
-		return E_UNSPEC;
-	}
-	*param = (void*)model;
-
-	return 0;
-}
-
-
-
 /************************** wrapper functions ******************************/
 
 static int w_restore_from(struct sip_msg *msg)