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534 lines
11 KiB
534 lines
11 KiB
#include "AmSipDialog.h"
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#include "AmConfig.h"
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#include "AmSession.h"
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#include "AmUtils.h"
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#include "AmServer.h"
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AmSipDialog::~AmSipDialog()
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{
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DBG("callid = %s\n",callid.c_str());
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DBG("uac_trans.size() = %u\n",(unsigned int)uac_trans.size());
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if(uac_trans.size()){
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for(TransMap::iterator it = uac_trans.begin();
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it != uac_trans.end(); it++){
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DBG(" cseq = %i; method = %s\n",it->first,it->second.method.c_str());
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}
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}
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DBG("uas_trans.size() = %u\n",(unsigned int)uas_trans.size());
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if(uas_trans.size()){
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for(TransMap::iterator it = uas_trans.begin();
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it != uas_trans.end(); it++){
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DBG(" cseq = %i; method = %s\n",it->first,it->second.method.c_str());
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}
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}
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}
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void AmSipDialog::updateStatus(const AmSipRequest& req)
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{
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if(uas_trans.find(req.cseq) == uas_trans.end())
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uas_trans[req.cseq] = AmSipTransaction(req.method,req.cseq);
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remote_uri = req.from_uri;
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sip_ip = req.dstip;
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sip_port = req.port;
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if(callid.empty()){
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callid = req.callid;
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remote_tag = req.from_tag;
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user = req.user;
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domain = req.domain;
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local_uri = req.r_uri;
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remote_party = req.from;
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local_party = req.to;
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setRoute(req.route);
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next_hop = req.next_hop;
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}
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}
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/**
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*
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* update dialog status from UAC Request that we send (e.g. INVITE)
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*/
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void AmSipDialog::updateStatusFromLocalRequest(const AmSipRequest& req)
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{
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remote_uri = req.r_uri;
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if(callid.empty()){
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DBG("dialog callid is empty, updating from UACRequest\n");
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callid = req.callid;
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local_tag = req.from_tag;
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user = req.user;
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domain = req.domain;
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local_uri = req.from_uri;
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remote_party = req.to;
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local_party = req.from;
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// sip_ip = AmConfig::req.dstip;
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// sip_port = req.port;
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// setRoute(req.route);
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next_hop = req.next_hop;
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}
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}
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int AmSipDialog::updateStatusReply(const AmSipRequest& req, unsigned int code)
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{
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TransMap::iterator t_it = uas_trans.find(req.cseq);
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if(t_it == uas_trans.end()){
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ERROR("could not find any transaction matching request\n");
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ERROR("method=%s; callid=%s; local_tag=%s; remote_tag=%s; cseq=%i\n",
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req.method.c_str(),callid.c_str(),local_tag.c_str(),
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remote_tag.c_str(),req.cseq);
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return -1;
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}
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DBG("reply: transaction found!\n");
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AmSipTransaction& t = t_it->second;
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//t->reply_code = code;
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switch(status){
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case Disconnected:
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case Pending:
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if(t.method == "INVITE"){
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if(req.method == "CANCEL"){
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// wait for somebody
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// to answer 487
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return 0;
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}
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if(code < 200)
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status = Pending;
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else if(code < 300)
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status = Connected;
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else
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status = Disconnected;
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}
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break;
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case Connected:
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case Disconnecting:
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if(t.method == "BYE"){
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if((code < 300) && (code >= 200))
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status = Disconnected;
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}
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break;
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}
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if(code >= 200){
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DBG("req.method = %s; t.method = %s\n",
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req.method.c_str(),t.method.c_str());
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uas_trans.erase(t_it);
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}
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return 0;
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}
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void AmSipDialog::updateStatus(const AmSipReply& reply)
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{
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TransMap::iterator t_it = uac_trans.find(reply.cseq);
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if(t_it == uac_trans.end()){
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ERROR("could not find any transaction matching reply\n");
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return;
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}
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DBG("updateStatus(reply): transaction found!\n");
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AmSipTransaction& t = t_it->second;
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//t->reply_code = reply.code;
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if(remote_tag.empty() && !reply.remote_tag.empty())
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remote_tag = reply.remote_tag;
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// allow route overwritting
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if(status < Connected) {
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if(!reply.route.empty())
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setRoute(reply.route);
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next_hop = reply.next_hop;
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}
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remote_uri = reply.next_request_uri;
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switch(status){
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case Disconnecting:
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if( t.method == "INVITE" ){
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if(reply.code == 487){
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// CANCEL accepted
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status = Disconnected;
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}
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else {
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// CANCEL rejected
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sendRequest("BYE");
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}
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}
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break;
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case Pending:
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case Disconnected:
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if(t.method != "BYE"){
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if(reply.code < 200)
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status = Pending;
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else if(reply.code >= 300)
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status = Disconnected;
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else
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status = Connected;
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}
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break;
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default:
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break;
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}
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if(reply.code >= 200)
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uac_trans.erase(t_it);
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}
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string AmSipDialog::getContactHdr()
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{
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if(!contact_uri.empty())
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return contact_uri;
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contact_uri = "Contact: <sip:";
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if(user.empty() || !AmConfig::PrefixSep.empty())
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contact_uri += CONTACT_USER_PREFIX;
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if(!AmConfig::PrefixSep.empty())
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contact_uri += AmConfig::PrefixSep;
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if(!user.empty())
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contact_uri += user;
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contact_uri += "@";
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if(sip_ip.empty())
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contact_uri += "!!"; // Ser will replace that...
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else {
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#ifdef SUPPORT_IPV6
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if(sip_ip.find('.') != string::npos)
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contact_uri += sip_ip;
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else
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contact_uri += "[" + sip_ip + "]";
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#else
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contact_uri += sip_ip;
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#endif
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}
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if(!sip_port.empty())
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contact_uri += ":" + sip_port;
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contact_uri += ">\n";
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return contact_uri;
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}
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int AmSipDialog::reply(const AmSipRequest& req,
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unsigned int code,
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const string& reason,
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const string& content_type,
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const string& body,
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const string& hdrs)
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{
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string m_hdrs = hdrs;
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if(hdl)
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hdl->onSendReply(req,code,reason,
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content_type,body,m_hdrs);
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string reply_sock = "/tmp/" + AmSession::getNewId();
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string code_str = int2str(code);
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string msg =
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":t_reply:" + reply_sock + "\n" +
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code_str + "\n" +
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reason + "\n" +
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req.key + "\n" +
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local_tag + "\n";
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if(!m_hdrs.empty())
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msg += m_hdrs;
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msg += getContactHdr();
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if(!body.empty())
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msg += "Content-Type: " + content_type + "\n";
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msg += ".\n";
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if(!body.empty())
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msg += body;
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msg += ".\n\n";
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if(updateStatusReply(req,code))
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return -1;
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return AmServer::send_msg(msg,reply_sock, 500);
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}
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/* static */
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int AmSipDialog::reply_error(const AmSipRequest& req, unsigned int code,
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const string& reason, const string& hdrs)
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{
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string reply_sock = "/tmp/" + AmSession::getNewId();
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string code_str = int2str(code);
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string msg =
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":t_reply:" + reply_sock + "\n" +
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code_str + "\n" +
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reason + "\n" +
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req.key + "\n" +
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AmSession::getNewId() + "\n";
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if(!hdrs.empty())
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msg += hdrs;
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else
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msg += "\n";
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msg += ".\n.\n\n";
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return AmServer::send_msg(msg,reply_sock, 500);
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}
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int AmSipDialog::bye()
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{
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switch(status){
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case Disconnecting:
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case Connected:
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status = Disconnected;
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return sendRequest("BYE");
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case Pending:
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status = Disconnecting;
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if(getUACTransPending())
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return cancel();
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else {
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// missing AmSipRequest to be able
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// to send the reply on behalf of the app.
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ERROR("bye(): Dialog should have"
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" been terminated by the app !!!\n");
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}
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default:
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if(getUACTransPending())
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return cancel();
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else {
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DBG("bye(): we are not connected "
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"(status=%i). do nothing!\n",status);
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}
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return 0;
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}
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}
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int AmSipDialog::reinvite(const string& hdrs,
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const string& content_type,
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const string& body)
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{
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switch(status){
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case Connected:
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return sendRequest("INVITE", content_type, body, hdrs);
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case Disconnecting:
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case Pending:
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DBG("reinvite(): we are not yet connected."
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"(status=%i). do nothing!\n",status);
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return 0;
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default:
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DBG("reinvite(): we are not connected "
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"(status=%i). do nothing!\n",status);
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return 0;
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}
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}
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int AmSipDialog::invite(const string& hdrs,
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const string& content_type,
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const string& body)
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{
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switch(status){
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case Disconnected: {
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int res = sendRequest("INVITE", content_type, body, hdrs);
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status = Pending;
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return res;
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}; break;
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case Disconnecting:
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case Connected:
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case Pending:
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default:
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DBG("invite(): we are already connected."
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"(status=%i). do nothing!\n",status);
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return 0;
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}
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}
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int AmSipDialog::update(const string& hdrs)
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{
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switch(status){
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case Connected:
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return sendRequest("UPDATE", "", "", hdrs);
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case Disconnecting:
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case Pending:
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DBG("update(): we are not yet connected."
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"(status=%i). do nothing!\n",status);
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return 0;
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default:
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DBG("update(): we are not connected "
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"(status=%i). do nothing!\n",status);
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return 0;
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}
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}
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int AmSipDialog::cancel()
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{
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int cancel_cseq = -1;
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TransMap::reverse_iterator t;
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for(t = uac_trans.rbegin();
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t != uac_trans.rend(); t++) {
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if(t->second.method == "INVITE"){
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cancel_cseq = t->second.cseq;
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break;
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}
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}
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if(t == uac_trans.rend()){
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ERROR("could not find INVITE transaction to cancel\n");
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return -1;
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}
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string reply_sock = "/tmp/" + AmSession::getNewId();
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string msg = ":t_uac_cancel:" + reply_sock + "\n"
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+ callid + "\n"
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+ int2str(cancel_cseq) + "\n\n";
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return AmServer::send_msg(msg, reply_sock, 50000);
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}
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int AmSipDialog::sendRequest(const string& method,
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const string& content_type,
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const string& body,
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const string& hdrs)
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{
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string msg,ser_cmd;
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string m_hdrs = hdrs;
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if(hdl)
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hdl->onSendRequest(method,content_type,body,m_hdrs);
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msg = ":t_uac_dlg:" + AmConfig::ReplySocketName + "\n"
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+ method + "\n"
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+ remote_uri + "\n";
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if(next_hop.empty())
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msg += ".";
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else
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msg += next_hop;
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msg += "\n";
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msg += "From: " + local_party;
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if(!local_tag.empty())
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msg += ";tag=" + local_tag;
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msg += "\n";
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msg += "To: " + remote_party;
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if(!remote_tag.empty())
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msg += ";tag=" + remote_tag;
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msg += "\n";
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msg += "CSeq: " + int2str(cseq) + " " + method + "\n"
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+ "Call-ID: " + callid + "\n";
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msg += getContactHdr();
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if(!hdrs.empty()){
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msg += hdrs;
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if(hdrs[hdrs.length()-1] != '\n')
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msg += "\n";
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}
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if(!route.empty())
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msg += getRoute();
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if(!body.empty())
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msg += "Content-Type: " + content_type + "\n";
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msg += ".\n" // EoH
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+ body + ".\n\n";
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if (AmServer::send_msg_replyhandler(msg))
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return -1;
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uac_trans[cseq] = AmSipTransaction(method,cseq);
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// increment for next request
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cseq++;
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return 0;
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}
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bool AmSipDialog::match_cancel(const AmSipRequest& cancel_req)
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{
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TransMap::iterator t = uas_trans.find(cancel_req.cseq);
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if((t != uas_trans.end()) && (t->second.method == "INVITE"))
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return true;
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return false;
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}
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string AmSipDialog::get_uac_trans_method(unsigned int cseq)
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{
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TransMap::iterator t = uac_trans.find(cseq);
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if (t != uac_trans.end())
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return t->second.method;
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return "";
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}
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string AmSipDialog::getRoute()
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{
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string r_set("");
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for(vector<string>::iterator it = route.begin();
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it != route.end(); it++) {
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r_set += "Route: " + *it + "\n";
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}
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return r_set;
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}
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void AmSipDialog::setRoute(const string& n_route)
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{
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string m_route = n_route;
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if(!m_route.empty() && (m_route.find("Route: ")!=string::npos))
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m_route = m_route.substr(7/*sizeof("Route: ")*/);
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route.clear();
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while(!m_route.empty()){
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string::size_type comma_pos;
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comma_pos = m_route.find(',');
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//route += "Route: " + m_route.substr(0,comma_pos) + "\n";
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route.push_back(m_route.substr(0,comma_pos));
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if(comma_pos != string::npos)
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m_route = m_route.substr(comma_pos+1);
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else
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m_route = "";
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}
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}
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