chan_sip: Increase some scratch buffer sizes dealing with caller id.

* Eliminated an unnecessary initialization in check_user_full().

(closes issue ASTERISK-22477)
Reported by: Michael Shepelev
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Merged revisions 400013 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 400014 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 400015 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@400016 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -18701,9 +18701,9 @@ static enum check_auth_result check_user_full(struct sip_pvt *p, struct sip_requ
 					      int sipmethod, const char *uri, enum xmittype reliable,
 					      struct ast_sockaddr *addr, struct sip_peer **authpeer)
 {
-	char from[256] = "", *of, *name, *unused_password, *domain;
+	char from[256], *of, *name, *unused_password, *domain;
 	enum check_auth_result res = AUTH_DONT_KNOW;
-	char calleridname[50];
+	char calleridname[256];
 	char *uri2 = ast_strdupa(uri);
 
 	terminate_uri(uri2);	/* trim extra stuff */

channels/sip/reqresp_parser.c

@@ -806,7 +806,7 @@ AST_TEST_DEFINE(get_calleridname_test)
 int get_name_and_number(const char *hdr, char **name, char **number)
 {
 	char header[256];
-	char tmp_name[50];
+	char tmp_name[256];
 	char *tmp_number = NULL;
 	char *hostport = NULL;
 	char *dummy = NULL;