1 /* 2 * libjingle 3 * Copyright 2004--2005, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "talk/examples/call/presencepushtask.h" 29 30 #include "talk/base/stringencode.h" 31 #include "talk/examples/call/muc.h" 32 #include "talk/xmpp/constants.h" 33 34 35 36 namespace buzz { 37 38 // string helper functions ----------------------------------------------------- 39 40 static bool 41 IsXmlSpace(int ch) { 42 return ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t'; 43 } 44 45 static bool ListContainsToken(const std::string & list, 46 const std::string & token) { 47 size_t i = list.find(token); 48 if (i == std::string::npos || token.empty()) 49 return false; 50 bool boundary_before = (i == 0 || IsXmlSpace(list[i - 1])); 51 bool boundary_after = (i == list.length() - token.length() || 52 IsXmlSpace(list[i + token.length()])); 53 return boundary_before && boundary_after; 54 } 55 56 57 bool PresencePushTask::HandleStanza(const XmlElement * stanza) { 58 if (stanza->Name() != QN_PRESENCE) 59 return false; 60 QueueStanza(stanza); 61 return true; 62 } 63 64 static bool IsUtf8FirstByte(int c) { 65 return (((c)&0x80)==0) || // is single byte 66 ((unsigned char)((c)-0xc0)<0x3e); // or is lead byte 67 } 68 69 int PresencePushTask::ProcessStart() { 70 const XmlElement * stanza = NextStanza(); 71 if (stanza == NULL) 72 return STATE_BLOCKED; 73 74 Jid from(stanza->Attr(QN_FROM)); 75 std::map<Jid, buzz::Muc*>::const_iterator elem = 76 client_->mucs().find(from.BareJid()); 77 if (elem == client_->mucs().end()) { 78 HandlePresence(from, stanza); 79 } else { 80 HandleMucPresence(elem->second, from, stanza); 81 } 82 83 return STATE_START; 84 } 85 86 void PresencePushTask::HandlePresence(const Jid& from, 87 const XmlElement* stanza) { 88 if (stanza->Attr(QN_TYPE) == STR_ERROR) 89 return; 90 91 Status s; 92 FillStatus(from, stanza, &s); 93 SignalStatusUpdate(s); 94 } 95 96 void PresencePushTask::HandleMucPresence(buzz::Muc* muc, 97 const Jid& from, 98 const XmlElement* stanza) { 99 if (from == muc->local_jid()) { 100 if (!stanza->HasAttr(QN_TYPE)) { 101 // We joined the MUC. 102 const XmlElement* elem = stanza->FirstNamed(QN_MUC_USER_X); 103 if (elem) { 104 elem = elem->FirstNamed(QN_MUC_USER_STATUS); 105 } 106 if (elem && (elem->Attr(QN_CODE) == "110" || 107 elem->Attr(QN_CODE) == "100")) { 108 SignalMucJoined(muc->jid()); 109 } 110 } else { 111 // We've been kicked. Bye. 112 int error = 0; 113 if (stanza->Attr(QN_TYPE) == STR_ERROR) { 114 const XmlElement* elem = stanza->FirstNamed(QN_ERROR); 115 if (elem && elem->HasAttr(QN_CODE)) { 116 error = atoi(elem->Attr(QN_CODE).c_str()); 117 } 118 } 119 SignalMucLeft(muc->jid(), error); 120 } 121 } else { 122 MucStatus s; 123 FillMucStatus(from, stanza, &s); 124 SignalMucStatusUpdate(muc->jid(), s); 125 } 126 } 127 128 void PresencePushTask::FillStatus(const Jid& from, const XmlElement* stanza, 129 Status* s) { 130 s->set_jid(from); 131 if (stanza->Attr(QN_TYPE) == STR_UNAVAILABLE) { 132 s->set_available(false); 133 } else { 134 s->set_available(true); 135 const XmlElement * status = stanza->FirstNamed(QN_STATUS); 136 if (status != NULL) { 137 s->set_status(status->BodyText()); 138 139 // Truncate status messages longer than 300 bytes 140 if (s->status().length() > 300) { 141 size_t len = 300; 142 143 // Be careful not to split legal utf-8 chars in half 144 while (!IsUtf8FirstByte(s->status()[len]) && len > 0) { 145 len -= 1; 146 } 147 std::string truncated(s->status(), 0, len); 148 s->set_status(truncated); 149 } 150 } 151 152 const XmlElement * priority = stanza->FirstNamed(QN_PRIORITY); 153 if (priority != NULL) { 154 int pri; 155 if (talk_base::FromString(priority->BodyText(), &pri)) { 156 s->set_priority(pri); 157 } 158 } 159 160 const XmlElement * show = stanza->FirstNamed(QN_SHOW); 161 if (show == NULL || show->FirstChild() == NULL) { 162 s->set_show(Status::SHOW_ONLINE); 163 } 164 else { 165 if (show->BodyText() == "away") { 166 s->set_show(Status::SHOW_AWAY); 167 } 168 else if (show->BodyText() == "xa") { 169 s->set_show(Status::SHOW_XA); 170 } 171 else if (show->BodyText() == "dnd") { 172 s->set_show(Status::SHOW_DND); 173 } 174 else if (show->BodyText() == "chat") { 175 s->set_show(Status::SHOW_CHAT); 176 } 177 else { 178 s->set_show(Status::SHOW_ONLINE); 179 } 180 } 181 182 const XmlElement * caps = stanza->FirstNamed(QN_CAPS_C); 183 if (caps != NULL) { 184 std::string node = caps->Attr(QN_NODE); 185 std::string ver = caps->Attr(QN_VER); 186 std::string exts = caps->Attr(QN_EXT); 187 188 s->set_know_capabilities(true); 189 190 if (node == GOOGLE_CLIENT_NODE) { 191 s->set_is_google_client(true); 192 s->set_version(ver); 193 } 194 195 if (ListContainsToken(exts, "voice-v1")) { 196 s->set_phone_capability(true); 197 } 198 if (ListContainsToken(exts, "video-v1")) { 199 s->set_video_capability(true); 200 } 201 } 202 203 const XmlElement* delay = stanza->FirstNamed(kQnDelayX); 204 if (delay != NULL) { 205 // Ideally we would parse this according to the Psuedo ISO-8601 rules 206 // that are laid out in JEP-0082: 207 // http://www.jabber.org/jeps/jep-0082.html 208 std::string stamp = delay->Attr(kQnStamp); 209 s->set_sent_time(stamp); 210 } 211 } 212 } 213 214 void PresencePushTask::FillMucStatus(const Jid& from, const XmlElement* stanza, 215 MucStatus* s) { 216 // First get the normal user status info. Happily, this is in the same 217 // format as it is for user presence. 218 FillStatus(from, stanza, s); 219 220 // Now look for src IDs, which will be present if this user is in a 221 // multiway call to this MUC. 222 const XmlElement* xstanza = stanza->FirstNamed(QN_MUC_USER_X); 223 if (xstanza) { 224 const XmlElement* media; 225 for (media = xstanza->FirstNamed(QN_GOOGLE_MUC_USER_MEDIA); 226 media; media = media->NextNamed(QN_GOOGLE_MUC_USER_MEDIA)) { 227 228 const XmlElement* type = media->FirstNamed(QN_GOOGLE_MUC_USER_TYPE); 229 if (!type) continue; // Shouldn't happen 230 231 const XmlElement* src_id = media->FirstNamed(QN_GOOGLE_MUC_USER_SRC_ID); 232 if (!src_id) continue; // Shouldn't happen 233 234 char *endptr; 235 uint32 src_id_num = strtoul(src_id->BodyText().c_str(), &endptr, 10); 236 if (src_id->BodyText().c_str()[0] == '\0' || endptr[0] != '\0') { 237 // String is not composed exclusively of leading whitespace plus a 238 // number (shouldn't happen). Ignore it. 239 continue; 240 } 241 // Else it's valid. Set it. 242 243 if (type->BodyText() == "audio") { 244 // This is the audio media element. Get the src-id. 245 s->set_audio_src_id(src_id_num); 246 } else if (type->BodyText() == "video") { 247 // This is the video media element. Get the src-id. 248 s->set_video_src_id(src_id_num); 249 } 250 } 251 } 252 } 253 254 } 255
