Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // Copyright (C) 2001,2002,2003,2004,2005 Federico Montesino <fedemp@altern.org> |
| 2 | // |
| 3 | // This program is free software; you can redistribute it and/or modify |
| 4 | // it under the terms of the GNU General Public License as published by |
| 5 | // the Free Software Foundation; either version 2 of the License, or |
| 6 | // (at your option) any later version. |
| 7 | // |
| 8 | // This program is distributed in the hope that it will be useful, |
| 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | // GNU General Public License for more details. |
| 12 | // |
| 13 | // You should have received a copy of the GNU General Public License |
| 14 | // along with this program; if not, write to the Free Software |
| 15 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 16 | // |
| 17 | // As a special exception, you may use this file as part of a free software |
| 18 | // library without restriction. Specifically, if other files instantiate |
| 19 | // templates or use macros or inline functions from this file, or you compile |
| 20 | // this file and link it with other files to produce an executable, this |
| 21 | // file does not by itself cause the resulting executable to be covered by |
| 22 | // the GNU General Public License. This exception does not however |
| 23 | // invalidate any other reasons why the executable file might be covered by |
| 24 | // the GNU General Public License. |
| 25 | // |
| 26 | // This exception applies only to the code released under the name GNU |
| 27 | // ccRTP. If you copy code from other releases into a copy of GNU |
| 28 | // ccRTP, as the General Public License permits, the exception does |
| 29 | // not apply to the code that you add in this way. To avoid misleading |
| 30 | // anyone as to the status of such modified files, you must delete |
| 31 | // this exception notice from them. |
| 32 | // |
| 33 | // If you write modifications of your own for GNU ccRTP, it is your choice |
| 34 | // whether to permit this exception to apply to your modifications. |
| 35 | // If you do not wish that, delete this exception notice. |
| 36 | // |
| 37 | |
| 38 | /** |
| 39 | * @file control.cpp |
| 40 | * |
| 41 | * @short SDESItemsHolder, RTPSource and Participant classes implementation. |
| 42 | **/ |
| 43 | |
| 44 | #include "private.h" |
| 45 | #include <ccrtp/sources.h> |
| 46 | |
Alexandre Lision | ddd731e | 2014-01-31 11:50:08 -0500 | [diff] [blame] | 47 | NAMESPACE_COMMONCPP |
Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 48 | |
| 49 | static void |
| 50 | findusername(std::string &username); |
| 51 | |
Alexandre Lision | ddd731e | 2014-01-31 11:50:08 -0500 | [diff] [blame] | 52 | #ifndef _MSWINDOWS_ |
Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 53 | static void |
| 54 | findusername(std::string &username) |
| 55 | { |
| 56 | // LOGNAME environment var has two advantages: |
| 57 | // 1) avoids problems of getlogin(3) and cuserid(3) |
| 58 | // 2) unlike getpwuid, takes into account user |
| 59 | // customization of the environment. |
| 60 | // Try both LOGNAME and USER env. var. |
| 61 | const char *user = Process::getEnv("LOGNAME"); |
| 62 | if ( !user || !strcmp(user,"") ) |
| 63 | user = Process::getEnv("USER"); |
| 64 | if ( !user || !strcmp(user,"") ) |
| 65 | username = Process::getUser(); |
| 66 | |
| 67 | if ( user ) |
| 68 | username = user; |
| 69 | else |
| 70 | username = ""; |
| 71 | } |
| 72 | |
| 73 | #else |
| 74 | |
| 75 | static void |
| 76 | findusername(std::string &username) |
| 77 | { |
| 78 | unsigned long len = 0; |
| 79 | if ( GetUserName(NULL,&len) && (len > 0) ) { |
| 80 | char *n = new char[len]; |
| 81 | GetUserName(n,&len); |
| 82 | username = n; |
| 83 | delete [] n; |
| 84 | } else { |
| 85 | username = ""; |
| 86 | } |
| 87 | } |
| 88 | #endif // #ifndef WIN32 |
| 89 | |
| 90 | void |
| 91 | SDESItemsHolder::setItem(SDESItemType item, const std::string& val) |
| 92 | { |
| 93 | if ( item > SDESItemTypeEND && item <= SDESItemTypeH323CADDR ) { |
| 94 | sdesItems[item] = val; |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | const std::string& |
| 99 | SDESItemsHolder::getItem(SDESItemType type) const |
| 100 | { |
| 101 | if ( type > SDESItemTypeEND && type <= SDESItemTypeH323CADDR ) { |
| 102 | return sdesItems[type]; |
| 103 | } else |
| 104 | return sdesItems[SDESItemTypeCNAME]; |
| 105 | } |
| 106 | |
| 107 | SyncSource::SyncSource(uint32 ssrc) : |
| 108 | state(stateUnknown), SSRC(ssrc), participant(NULL), |
| 109 | networkAddress("0"), dataTransportPort(0), controlTransportPort(0) |
| 110 | {} |
| 111 | |
| 112 | SyncSource::~SyncSource() |
| 113 | { |
| 114 | activeSender = false; |
| 115 | state = statePrevalid; |
| 116 | } |
| 117 | |
| 118 | Participant::Participant(const std::string& cname) : SDESItemsHolder() |
| 119 | { |
| 120 | SDESItemsHolder::setItem(SDESItemTypeCNAME,cname); |
| 121 | } |
| 122 | |
| 123 | Participant::~Participant() |
| 124 | {} |
| 125 | |
| 126 | const size_t RTPApplication::defaultParticipantsNum = 11; |
| 127 | |
| 128 | RTPApplication& defaultApplication() |
| 129 | { |
| 130 | // default application CNAME is automatically assigned. |
| 131 | static RTPApplication defApp(""); |
| 132 | |
| 133 | return defApp; |
| 134 | } |
| 135 | |
| 136 | RTPApplication::RTPApplication(const std::string& cname) : |
| 137 | SDESItemsHolder(), participants( new Participant* [defaultParticipantsNum] ), |
| 138 | firstPart(NULL), lastPart(NULL) |
| 139 | { |
| 140 | // guess CNAME, in the form of user@host_fqn |
| 141 | if ( cname.length() > 0 ) |
| 142 | SDESItemsHolder::setItem(SDESItemTypeCNAME,cname); |
| 143 | else |
| 144 | findCNAME(); |
| 145 | } |
| 146 | |
| 147 | RTPApplication::~RTPApplication() |
| 148 | { |
| 149 | ParticipantLink *p; |
| 150 | while ( NULL != firstPart ) { |
| 151 | p = firstPart; |
| 152 | firstPart = firstPart->getNext(); |
| 153 | #ifdef CCXX_EXCEPTIONS |
| 154 | try { |
| 155 | #endif |
| 156 | delete p; |
| 157 | #ifdef CCXX_EXCEPTIONS |
| 158 | } catch (...) {} |
| 159 | #endif |
| 160 | } |
| 161 | lastPart = NULL; |
| 162 | #ifdef CCXX_EXCEPTIONS |
| 163 | try { |
| 164 | #endif |
| 165 | delete [] participants; |
| 166 | #ifdef CCXX_EXCEPTIONS |
| 167 | } catch (...) {} |
| 168 | #endif |
| 169 | } |
| 170 | |
| 171 | // TODO: it should be implemented using the participant iterators |
| 172 | const Participant* |
| 173 | RTPApplication::getParticipant(const std::string& cname) const |
| 174 | { |
| 175 | ParticipantLink* pl = firstPart; |
| 176 | while ( (NULL != pl) && |
| 177 | ( pl->getParticipant()->getSDESItem(SDESItemTypeCNAME) |
| 178 | != cname) ) { |
| 179 | pl = pl->getNext(); |
| 180 | } |
| 181 | if ( pl ) { |
| 182 | return pl->getParticipant(); |
| 183 | } else { |
| 184 | return NULL; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | void |
| 189 | RTPApplication::addParticipant(Participant& part) |
| 190 | { |
| 191 | ParticipantLink* pl = new ParticipantLink(part,NULL); |
| 192 | if ( NULL == firstPart ) |
| 193 | firstPart = lastPart = pl; |
| 194 | else |
| 195 | lastPart->setNext(pl); |
| 196 | lastPart = pl; |
| 197 | } |
| 198 | |
| 199 | void |
| 200 | RTPApplication::removeParticipant(ParticipantLink* pl) |
| 201 | { |
| 202 | if ( NULL == pl ) |
| 203 | return; |
| 204 | if ( pl->getPrev() ) |
| 205 | pl->getPrev()->setNext(pl->getNext()); |
| 206 | if ( pl->getNext() ) |
| 207 | pl->getNext()->setPrev(pl->getPrev()); |
| 208 | delete pl; |
| 209 | } |
| 210 | |
| 211 | void |
| 212 | RTPApplication::findCNAME() |
| 213 | { |
| 214 | // build string username@host_fqn |
| 215 | std::string username; |
| 216 | findusername(username); |
| 217 | |
| 218 | // First create an InetHostAddress object, otherwise the |
| 219 | // object will be destructed and the hostname corrupted. |
| 220 | InetHostAddress iha; |
| 221 | const char *p = iha.getHostname(); |
| 222 | // Returned hostname can be NULL |
| 223 | std::string hname; |
| 224 | if (p) hname = p; |
| 225 | |
| 226 | setSDESItem(SDESItemTypeCNAME, |
| 227 | username + "@" + hname); |
| 228 | } |
| 229 | |
Alexandre Lision | ddd731e | 2014-01-31 11:50:08 -0500 | [diff] [blame] | 230 | END_NAMESPACE |
Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 231 | |
| 232 | /** EMACS ** |
| 233 | * Local variables: |
| 234 | * mode: c++ |
| 235 | * c-basic-offset: 4 |
| 236 | * End: |
| 237 | */ |