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MT#59962 Add support of AmIceCandidate

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Introduce AmIceCandidate implementation.

Will be required for later usage, e.g. in AmStunServer

Change-Id: I6eb5687e37aab93cbde49af48abca64ca9d13c1d
mr13.5
Donat Zenichev 10 months ago
parent c2524be47a
commit 257fcd3f7e
7 changed files with 330 additions and 0 deletions
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53
core/AmIceCandidate.cpp
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@ -0,0 +1,53 @@
/*
* Copyright (C) 2002-2003 Fhg Fokus
*
* This file is part of SEMS, a free SIP media server.
*
* SEMS 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 released under
* the GPL with the additional exemption that compiling, linking,
* and/or using OpenSSL is allowed.
*
* For a license to use the SEMS software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* SEMS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "AmIceCandidate.h"
#include <string>
/** \brief ICE candidates */
AmIceCandidate::AmIceCandidate(string foundation, int component_id, string transport, string address, unsigned int port)
{
this->foundation = foundation;
this->component_id = component_id;
this->transport = transport;
this->address = address;
this->port = port;
this->type = string("host");
setPriority();
};
void AmIceCandidate::setPriority()
{
int precedence = 65535;
priority = (1 << 24)*(126) +
(1 << 8)*(precedence) +
(1 << 0)*(256 - component_id);
};

51
core/AmIceCandidate.h
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@ -0,0 +1,51 @@
/*
* Copyright (C) 2002-2003 Fhg Fokus
*
* This file is part of SEMS, a free SIP media server.
*
* SEMS 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 released under
* the GPL with the additional exemption that compiling, linking,
* and/or using OpenSSL is allowed.
*
* For a license to use the SEMS software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* SEMS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __AmIceCandidate__
#define __AmIceCandidate__
#include <string>
using std::string;
/** \brief ICE candidate */
class AmIceCandidate
{
public:
string foundation;
int component_id;
string transport;
int priority;
string address;
unsigned int port;
string type;
AmIceCandidate(string foundation, int component_id, string transport, string address, unsigned int port);
void setPriority();
};
#endif

30
core/AmSdp.cpp
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@ -335,6 +335,22 @@ bool AmSdp::parse(const string& sdp_copy)
return parsed;
}
string SdpIceCandidate::print() const
{
string buf = "a=candidate:";
buf += candidate->foundation + " ";
buf += int2str(candidate->component_id) + " ";
buf += candidate->transport + " ";
buf += int2str(candidate->priority) + " ";
buf += candidate->address + " ";
buf += int2str(candidate->port) + " ";
buf += "typ " + candidate->type;
buf += CRLF;
return buf;
}
void AmSdp::print(string& body) const
{
string out_buf = "v="+int2str(version)+"\r\n"
@ -451,6 +467,20 @@ void AmSdp::print(string& body) const
case SdpMedia::DirBoth: out_buf += "a=direction:both\r\n"; break;
case SdpMedia::DirUndefined: break;
}
// add ICE credentials
if (!media_it->ice_username.empty() && !media_it->ice_password.empty()) {
out_buf += "a=ice-ufrag:" + media_it->ice_username + "\r\n";
out_buf += "a=ice-pwd:" + media_it->ice_password + "\r\n";
}
// add ICE candidates
for (std::vector<SdpIceCandidate>::const_iterator ice_it = media_it->iceCandidates.begin();
ice_it != media_it->iceCandidates.end();
ice_it++)
{
out_buf += ice_it->print();
}
}
body = std::move(out_buf);

18
core/AmSdp.h
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@ -38,6 +38,7 @@
#include <memory>
using std::string;
#include "AmIceCandidate.h"
#define COMFORT_NOISE_PAYLOAD_TYPE 13 // RFC 3389
#define DYNAMIC_PAYLOAD_TYPE_START 96 // range: 96->127, see RFC 1890
@ -165,6 +166,18 @@ struct SdpAttribute
bool operator == (const SdpAttribute& other) const;
};
struct SdpIceCandidate {
SdpIceCandidate(AmIceCandidate* candidate)
{
this->candidate = candidate;
}
AmIceCandidate* candidate;
string print() const;
};
/** \brief m=... line in SDP */
struct SdpMedia
{
@ -183,6 +196,9 @@ struct SdpMedia
Direction dir; // a=direction
string fmt; // format in case proto != RTP/AVP or RTP/SAVP
string ice_username;
string ice_password;
// sendrecv|sendonly|recvonly|inactive
bool send;
bool recv;
@ -191,6 +207,8 @@ struct SdpMedia
std::vector<SdpAttribute> attributes; // unknown attributes
std::vector<SdpIceCandidate> iceCandidates;
bool operator == (const SdpMedia& other) const;
SdpMedia() : port(0), nports(0), conn(), dir(DirUndefined), type(MT_NONE), transport(TP_NONE), send(true), recv(true) {}

73
core/crc32calc.h
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@ -0,0 +1,73 @@
/*
* Copyright (C) 2002-2003 Fhg Fokus
*
* This file is part of SEMS, a free SIP media server.
*
* SEMS 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 released under
* the GPL with the additional exemption that compiling, linking,
* and/or using OpenSSL is allowed.
*
* For a license to use the SEMS software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* SEMS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __crc32calc_h__
#define __crc32calc_h__
static DWORD table[256];
static bool inited;
class CRC32Calc
{
public:
CRC32Calc()
{
//Check if inited globally
if (!inited)
{
for (DWORD i = 0; i < 256; ++i) {
DWORD c = i;
for (DWORD j = 0; j < 8; ++j) {
if (c & 1) {
c = 0xEDB88320 ^ (c >> 1);
} else {
c >>= 1;
}
}
table[i] = c;
}
//Initied
inited = true;
}
crc = 0;
}
DWORD Update(BYTE *data, DWORD size)
{
DWORD c = crc ^ 0xFFFFFFFF;
for (DWORD i = 0; i < size; ++i)
c = table[(c ^ data[i]) & 0xFF] ^ (c >> 8);
crc = c ^ 0xFFFFFFFF;
return crc;
}
private:
DWORD crc;
};
#endif

66
core/ice_utils.cpp
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@ -0,0 +1,66 @@
/*
* Copyright (C) 2002-2003 Fhg Fokus
*
* This file is part of SEMS, a free SIP media server.
*
* SEMS 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 released under
* the GPL with the additional exemption that compiling, linking,
* and/or using OpenSSL is allowed.
*
* For a license to use the SEMS software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* SEMS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ice_utils.h"
#include "AmUtils.h"
using std::string;
string getIceToken(const int min, const int max)
{
string token;
int len = (((int)get_random() & max) | min);
static const char ice_char[] =
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"+/";
for (int i = 0; i < len; ++i) {
token += ice_char[get_random() % (sizeof(ice_char) - 1)];
}
return token;
}
string createIceUsername()
{
return getIceToken(4, 10);
}
string createIcePassword()
{
return getIceToken(22, 30);
}
string createIceFoundation()
{
return getIceToken(1, 20);
}

39
core/ice_utils.h
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@ -0,0 +1,39 @@
/*
* Copyright (C) 2002-2003 Fhg Fokus
*
* This file is part of SEMS, a free SIP media server.
*
* SEMS 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 released under
* the GPL with the additional exemption that compiling, linking,
* and/or using OpenSSL is allowed.
*
* For a license to use the SEMS software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* SEMS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ice_utils_h__
#define __ice_utils_h___
#include <string>
std::string getIceToken(const int min, const int max);
std::string createIceUsername();
std::string createIcePassword();
std::string createIceFoundation();
#endif
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