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/*
* Copyright (C) 2004-2013 Savoir-Faire Linux Inc.
*
* Author: Tristan Matthews <tristan.matthews@savoirfairelinux.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 3 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Additional permission under GNU GPL version 3 section 7:
*
* If you modify this program, or any covered work, by linking or
* combining it with the OpenSSL project's OpenSSL library (or a
* modified version of that library), containing parts covered by the
* terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
* grants you additional permission to convey the resulting work.
* Corresponding Source for a non-source form of such a combination
* shall include the source code for the parts of OpenSSL used as well
* as that of the covered work.
*/
#include "sip_utils.h"
#include "logger.h"
#include "utf8_utils.h"
#include <pjsip.h>
#include <pjsip_ua.h>
#include <pjlib-util.h>
#include <pjnath.h>
#include <pjnath/stun_config.h>
#include <pj/string.h>
#include <pjsip/sip_types.h>
#include <pjsip/sip_uri.h>
#include <pj/list.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <vector>
#include <algorithm>
std::string
sip_utils::fetchHeaderValue(pjsip_msg *msg, const std::string &field)
{
pj_str_t name = pj_str((char*) field.c_str());
pjsip_generic_string_hdr *hdr = static_cast<pjsip_generic_string_hdr*>(pjsip_msg_find_hdr_by_name(msg, &name, NULL));
if (!hdr)
return "";
std::string value(hdr->hvalue.ptr, hdr->hvalue.slen);
size_t pos = value.find("\n");
if (pos != std::string::npos)
return value.substr(0, pos);
else
return "";
}
pjsip_route_hdr *
sip_utils::createRouteSet(const std::string &route, pj_pool_t *hdr_pool)
{
pjsip_route_hdr *route_set = pjsip_route_hdr_create(hdr_pool);
std::string host;
int port = 0;
size_t found = route.find(":");
if (found != std::string::npos) {
host = route.substr(0, found);
port = atoi(route.substr(found + 1, route.length() - found).c_str());
} else
host = route;
pjsip_route_hdr *routing = pjsip_route_hdr_create(hdr_pool);
pjsip_sip_uri *url = pjsip_sip_uri_create(hdr_pool, 0);
url->lr_param = 1;
routing->name_addr.uri = (pjsip_uri*) url;
pj_strdup2(hdr_pool, &url->host, host.c_str());
url->port = port;
DEBUG("Adding route %s", host.c_str());
pj_list_push_back(route_set, pjsip_hdr_clone(hdr_pool, routing));
return route_set;
}
// FIXME: replace with regex
std::string
sip_utils::parseDisplayName(const char * buffer)
{
// Start in From: in short and long form
const char* from_header = strstr(buffer, "\nFrom: ");
if (!from_header)
from_header = strstr(buffer, "\nf: ");
if (!from_header)
return "";
std::string temp(from_header);
// Cut at end of line
temp = temp.substr(0, temp.find("\n", 1));
size_t begin_displayName = temp.find("\"");
size_t end_displayName;
if (begin_displayName != std::string::npos) {
// parse between quotes
end_displayName = temp.find("\"", begin_displayName + 1);
if (end_displayName == std::string::npos)
return "";
} else {
// parse without quotes
end_displayName = temp.find("<");
if (end_displayName != std::string::npos) {
begin_displayName = temp.find_first_not_of(" ", temp.find(":"));
if (begin_displayName == std::string::npos)
return "";
// omit trailing/leading spaces
begin_displayName++;
end_displayName--;
if (end_displayName == begin_displayName)
return "";
} else {
return "";
}
}
std::string displayName = temp.substr(begin_displayName + 1,
end_displayName - begin_displayName - 1);
// Filter out invalid UTF-8 characters to avoid getting kicked from D-Bus
if (not utf8_validate(displayName)) {
return utf8_make_valid(displayName);
}
return displayName;
}
void
sip_utils::stripSipUriPrefix(std::string& sipUri)
{
// Remove sip: prefix
static const char SIP_PREFIX[] = "sip:";
size_t found = sipUri.find(SIP_PREFIX);
if (found != std::string::npos)
sipUri.erase(found, (sizeof SIP_PREFIX) - 1);
// URI may or may not be between brackets
found = sipUri.find("<");
if (found != std::string::npos)
sipUri.erase(found, 1);
found = sipUri.find("@");
if (found != std::string::npos)
sipUri.erase(found);
found = sipUri.find(">");
if (found != std::string::npos)
sipUri.erase(found, 1);
}
std::string
sip_utils::getHostFromUri(const std::string& sipUri)
{
std::string hostname(sipUri);
size_t found = hostname.find("@");
if (found != std::string::npos)
hostname.erase(0, found+1);
found = hostname.find(">");
if (found != std::string::npos)
hostname.erase(found, 1);
return hostname;
}
std::vector<std::string>
sip_utils::getIPList(const std::string &name)
{
std::vector<std::string> ipList;
if (name.empty())
return ipList;
//ERROR("sip_utils::getIPList %s", name.c_str());
struct addrinfo *result;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = AI_ADDRCONFIG;
/* resolve the domain name into a list of addresses */
const int error = getaddrinfo(name.c_str(), nullptr, &hints, &result);
if (error != 0) {
DEBUG("getaddrinfo on \"%s\" failed: %s", name.c_str(), gai_strerror(error));
return ipList;
}
for (struct addrinfo *res = result; res != nullptr; res = res->ai_next) {
void *ptr = 0;
std::vector<char> addrstr;
switch (res->ai_family) {
case AF_INET:
addrstr.resize(INET_ADDRSTRLEN);
ptr = &((struct sockaddr_in *) res->ai_addr)->sin_addr;
break;
case AF_INET6:
addrstr.resize(INET6_ADDRSTRLEN);
ptr = &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr;
break;
default:
ERROR("Unexpected address family type, skipping.");
continue;
}
inet_ntop(res->ai_family, ptr, addrstr.data(), addrstr.size());
// don't add duplicates, and don't use an std::set because
// we want this order preserved.
const std::string tmp(addrstr.begin(), addrstr.end());
if (std::find(ipList.begin(), ipList.end(), tmp) == ipList.end()) {
ipList.push_back(tmp);
}
}
freeaddrinfo(result);
return ipList;
}
void
sip_utils::addContactHeader(const pj_str_t *contact_str, pjsip_tx_data *tdata)
{
pjsip_contact_hdr *contact = pjsip_contact_hdr_create(tdata->pool);
contact->uri = pjsip_parse_uri(tdata->pool, contact_str->ptr,
contact_str->slen, PJSIP_PARSE_URI_AS_NAMEADDR);
// remove old contact header (if present)
pjsip_msg_find_remove_hdr(tdata->msg, PJSIP_H_CONTACT, NULL);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) contact);
}
void
sip_utils::sip_strerror(pj_status_t code)
{
char err_msg[PJ_ERR_MSG_SIZE];
pj_strerror(code, err_msg, sizeof err_msg);
ERROR("%d: %s", code, err_msg);
}
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