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/*
Copyright (C) 2005-2009 Michel de Boer <michel@twinklephone.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <cassert>
#include "response.h"
#include "util.h"
#include "parse_ctrl.h"
#include "audits/memman.h"
t_response::t_response() : t_sip_message() {}
t_response::t_response(const t_response &r) : t_sip_message(r) ,
code(r.code),
reason(r.reason),
src_ip_port_request(r.src_ip_port_request)
{
}
t_response::t_response(int _code, string _reason) : t_sip_message() {
code = _code;
if (_reason == "") {
switch (code) {
case 100: reason = REASON_100; break;
case 180: reason = REASON_180; break;
case 181: reason = REASON_181; break;
case 182: reason = REASON_182; break;
case 183: reason = REASON_183; break;
case 200: reason = REASON_200; break;
case 202: reason = REASON_202; break;
case 300: reason = REASON_300; break;
case 301: reason = REASON_301; break;
case 302: reason = REASON_302; break;
case 305: reason = REASON_305; break;
case 380: reason = REASON_380; break;
case 400: reason = REASON_400; break;
case 401: reason = REASON_401; break;
case 402: reason = REASON_402; break;
case 403: reason = REASON_403; break;
case 404: reason = REASON_404; break;
case 405: reason = REASON_405; break;
case 406: reason = REASON_406; break;
case 407: reason = REASON_407; break;
case 408: reason = REASON_408; break;
case 410: reason = REASON_410; break;
case 412: reason = REASON_412; break;
case 413: reason = REASON_413; break;
case 414: reason = REASON_414; break;
case 415: reason = REASON_415; break;
case 416: reason = REASON_416; break;
case 420: reason = REASON_420; break;
case 421: reason = REASON_421; break;
case 423: reason = REASON_423; break;
case 480: reason = REASON_480; break;
case 481: reason = REASON_481; break;
case 482: reason = REASON_482; break;
case 483: reason = REASON_483; break;
case 484: reason = REASON_484; break;
case 485: reason = REASON_485; break;
case 486: reason = REASON_486; break;
case 487: reason = REASON_487; break;
case 488: reason = REASON_488; break;
case 489: reason = REASON_489; break;
case 491: reason = REASON_491; break;
case 493: reason = REASON_493; break;
case 500: reason = REASON_500; break;
case 501: reason = REASON_501; break;
case 502: reason = REASON_502; break;
case 503: reason = REASON_503; break;
case 504: reason = REASON_504; break;
case 505: reason = REASON_505; break;
case 513: reason = REASON_513; break;
case 600: reason = REASON_600; break;
case 603: reason = REASON_603; break;
case 604: reason = REASON_604; break;
case 606: reason = REASON_606; break;
default: reason = "Unknown Error";
}
} else {
reason = _reason;
}
}
int t_response::get_class(void) const {
return code / 100;
}
bool t_response::is_provisional(void) const {
return (get_class() == R_1XX);
}
bool t_response::is_final(void) const {
return (get_class() != R_1XX);
}
bool t_response::is_success(void) const {
return (get_class() == R_2XX);
}
string t_response::encode(bool add_content_length) {
string s;
s = "SIP/" + version + ' ' + int2str(code, "%3d") + ' ' + reason;
s += CRLF;
s += t_sip_message::encode(add_content_length);
return s;
}
list<string> t_response::encode_env(void) {
string s;
list<string> l = t_sip_message::encode_env();
s = "SIPSTATUS_CODE=";
s += int2str(code, "%3d");
l.push_back(s);
s = "SIPSTATUS_REASON=";
s += reason;
l.push_back(s);
return l;
}
t_sip_message *t_response::copy(void) const {
t_sip_message *m = new t_response(*this);
MEMMAN_NEW(m);
return m;
}
bool t_response::is_valid(bool &fatal, string &reason) const {
if (!t_sip_message::is_valid(fatal, reason)) return false;
fatal = false;
switch(hdr_cseq.method) {
case INVITE:
if (get_class() == R_2XX && !hdr_contact.is_populated()) {
reason = "Contact header missing";
return false;
}
break;
case SUBSCRIBE:
// RFC 3265 7.1, 7.2
/*
Some SIP servers do not send the mandatory Expires header.
For interoperability this deviation is allowed.
if (get_class()== R_2XX && !hdr_expires.is_populated()) {
reason = "Expires header missing";
return false;
}
*/
switch (code) {
case R_489_BAD_EVENT:
if (!hdr_allow_events.is_populated()) {
reason = "Allow-Events header missing";
return false;
}
break;
}
break;
case NOTIFY:
// RFC 3265 7.1, 7.2
switch (code) {
case R_489_BAD_EVENT:
if (!hdr_allow_events.is_populated()) {
reason = "Allow-Events header is missing";
return false;
}
break;
}
break;
default:
break;
}
if (hdr_rseq.is_populated()) {
// RFC 3262 7.1
// The value ranges from 1 to 2**32 - 1
if (hdr_rseq.resp_nr == 0) {
reason = "RSeq is zero";
return false;
}
}
return true;
}
bool t_response::must_authenticate(void) const {
return (code == R_401_UNAUTHORIZED &&
hdr_www_authenticate.is_populated() ||
code == R_407_PROXY_AUTH_REQUIRED &&
hdr_proxy_authenticate.is_populated());
}
void t_response::get_destination(t_ip_port &ip_port) const {
assert(hdr_via.is_populated());
if (src_ip_port_request.transport == "tcp") {
// RFC 3261 18.2.2
// For TCP the response should be sent on the connection on which
// the request was received. So the address returned here is the
// alternative destination when the connection is closed already.
ip_port = src_ip_port_request;
} else {
hdr_via.get_response_dst(ip_port);
}
}
void t_response::calc_local_ip(void) {
t_ip_port dst;
get_destination(dst);
if (dst.ipaddr != 0) {
local_ip_ = get_src_ip4_address_for_dst(dst.ipaddr);
}
}
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