| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | // $Id: acquire-method.cc,v 1.15 1999/01/24 21:16:04 jgg Exp $ |
| 4 | /* ###################################################################### |
| 5 | |
| 6 | Acquire Method |
| 7 | |
| 8 | ##################################################################### */ |
| 9 | /*}}}*/ |
| 10 | // Include Files /*{{{*/ |
| 11 | #ifdef __GNUG__ |
| 12 | #pragma implementation "apt-pkg/acquire-method.h" |
| 13 | #endif |
| 14 | #include <apt-pkg/acquire-method.h> |
| 15 | #include <apt-pkg/error.h> |
| 16 | #include <apt-pkg/configuration.h> |
| 17 | #include <strutl.h> |
| 18 | #include <apt-pkg/fileutl.h> |
| 19 | |
| 20 | #include <stdio.h> |
| 21 | /*}}}*/ |
| 22 | |
| 23 | // AcqMethod::pkgAcqMethod - Constructor /*{{{*/ |
| 24 | // --------------------------------------------------------------------- |
| 25 | /* This constructs the initialization text */ |
| 26 | pkgAcqMethod::pkgAcqMethod(const char *Ver,unsigned long Flags) |
| 27 | { |
| 28 | char S[300] = ""; |
| 29 | char *End = S; |
| 30 | strcat(End,"100 Capabilities\n"); |
| 31 | sprintf(End+strlen(End),"Version: %s\n",Ver); |
| 32 | |
| 33 | if ((Flags & SingleInstance) == SingleInstance) |
| 34 | strcat(End,"Single-Instance: true\n"); |
| 35 | |
| 36 | if ((Flags & Pipeline) == Pipeline) |
| 37 | strcat(End,"Pipeline: true\n"); |
| 38 | |
| 39 | if ((Flags & SendConfig) == SendConfig) |
| 40 | strcat(End,"Send-Config: true\n"); |
| 41 | |
| 42 | if ((Flags & LocalOnly) == LocalOnly) |
| 43 | strcat(End,"Local-Only: true\n"); |
| 44 | strcat(End,"\n"); |
| 45 | |
| 46 | if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S)) |
| 47 | exit(100); |
| 48 | |
| 49 | SetNonBlock(STDIN_FILENO,true); |
| 50 | |
| 51 | Queue = 0; |
| 52 | QueueBack = 0; |
| 53 | } |
| 54 | /*}}}*/ |
| 55 | // AcqMethod::Fail - A fetch has failed /*{{{*/ |
| 56 | // --------------------------------------------------------------------- |
| 57 | /* */ |
| 58 | void pkgAcqMethod::Fail(bool Transient) |
| 59 | { |
| 60 | string Err = "Undetermined Error"; |
| 61 | if (_error->empty() == false) |
| 62 | _error->PopMessage(Err); |
| 63 | _error->Discard(); |
| 64 | Fail(Err,Transient); |
| 65 | } |
| 66 | /*}}}*/ |
| 67 | // AcqMethod::Fail - A fetch has failed /*{{{*/ |
| 68 | // --------------------------------------------------------------------- |
| 69 | /* */ |
| 70 | void pkgAcqMethod::Fail(string Err,bool Transient) |
| 71 | { |
| 72 | char S[1024]; |
| 73 | if (Queue != 0) |
| 74 | { |
| 75 | snprintf(S,sizeof(S),"400 URI Failure\nURI: %s\n" |
| 76 | "Message: %s\n",Queue->Uri.c_str(),Err.c_str()); |
| 77 | |
| 78 | // Dequeue |
| 79 | FetchItem *Tmp = Queue; |
| 80 | Queue = Queue->Next; |
| 81 | delete Tmp; |
| 82 | if (Tmp == QueueBack) |
| 83 | QueueBack = Queue; |
| 84 | } |
| 85 | else |
| 86 | snprintf(S,sizeof(S),"400 URI Failure\nURI: <UNKNOWN>\n" |
| 87 | "Message: %s\n",Err.c_str()); |
| 88 | |
| 89 | // Set the transient flag |
| 90 | if (Transient == true) |
| 91 | strcat(S,"Transient-Failure: true\n\n"); |
| 92 | else |
| 93 | strcat(S,"\n"); |
| 94 | |
| 95 | if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S)) |
| 96 | exit(100); |
| 97 | } |
| 98 | /*}}}*/ |
| 99 | // AcqMethod::URIStart - Indicate a download is starting /*{{{*/ |
| 100 | // --------------------------------------------------------------------- |
| 101 | /* */ |
| 102 | void pkgAcqMethod::URIStart(FetchResult &Res) |
| 103 | { |
| 104 | if (Queue == 0) |
| 105 | abort(); |
| 106 | |
| 107 | char S[1024] = ""; |
| 108 | char *End = S; |
| 109 | |
| 110 | End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str()); |
| 111 | if (Res.Size != 0) |
| 112 | End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size); |
| 113 | |
| 114 | if (Res.LastModified != 0) |
| 115 | End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n", |
| 116 | TimeRFC1123(Res.LastModified).c_str()); |
| 117 | |
| 118 | if (Res.ResumePoint != 0) |
| 119 | End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n", |
| 120 | Res.ResumePoint); |
| 121 | |
| 122 | strcat(End,"\n"); |
| 123 | if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S)) |
| 124 | exit(100); |
| 125 | } |
| 126 | /*}}}*/ |
| 127 | // AcqMethod::URIDone - A URI is finished /*{{{*/ |
| 128 | // --------------------------------------------------------------------- |
| 129 | /* */ |
| 130 | void pkgAcqMethod::URIDone(FetchResult &Res, FetchResult *Alt) |
| 131 | { |
| 132 | if (Queue == 0) |
| 133 | abort(); |
| 134 | |
| 135 | char S[1024] = ""; |
| 136 | char *End = S; |
| 137 | |
| 138 | End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",Queue->Uri.c_str()); |
| 139 | |
| 140 | if (Res.Filename.empty() == false) |
| 141 | End += snprintf(End,sizeof(S) - (End - S),"Filename: %s\n",Res.Filename.c_str()); |
| 142 | |
| 143 | if (Res.Size != 0) |
| 144 | End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size); |
| 145 | |
| 146 | if (Res.LastModified != 0) |
| 147 | End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n", |
| 148 | TimeRFC1123(Res.LastModified).c_str()); |
| 149 | |
| 150 | if (Res.MD5Sum.empty() == false) |
| 151 | End += snprintf(End,sizeof(S) - (End - S),"MD5-Hash: %s\n",Res.MD5Sum.c_str()); |
| 152 | |
| 153 | if (Res.ResumePoint != 0) |
| 154 | End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n", |
| 155 | Res.ResumePoint); |
| 156 | |
| 157 | if (Res.IMSHit == true) |
| 158 | strcat(End,"IMS-Hit: true\n"); |
| 159 | End = S + strlen(S); |
| 160 | |
| 161 | if (Alt != 0) |
| 162 | { |
| 163 | if (Alt->Filename.empty() == false) |
| 164 | End += snprintf(End,sizeof(S) - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str()); |
| 165 | |
| 166 | if (Alt->Size != 0) |
| 167 | End += snprintf(End,sizeof(S) - (End - S),"Alt-Size: %u\n",Alt->Size); |
| 168 | |
| 169 | if (Alt->LastModified != 0) |
| 170 | End += snprintf(End,sizeof(S) - (End - S),"Alt-Last-Modified: %s\n", |
| 171 | TimeRFC1123(Alt->LastModified).c_str()); |
| 172 | |
| 173 | if (Alt->MD5Sum.empty() == false) |
| 174 | End += snprintf(End,sizeof(S) - (End - S),"Alt-MD5-Hash: %s\n", |
| 175 | Alt->MD5Sum.c_str()); |
| 176 | |
| 177 | if (Alt->IMSHit == true) |
| 178 | strcat(End,"Alt-IMS-Hit: true\n"); |
| 179 | } |
| 180 | |
| 181 | strcat(End,"\n"); |
| 182 | if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S)) |
| 183 | exit(100); |
| 184 | |
| 185 | // Dequeue |
| 186 | FetchItem *Tmp = Queue; |
| 187 | Queue = Queue->Next; |
| 188 | delete Tmp; |
| 189 | if (Tmp == QueueBack) |
| 190 | QueueBack = Queue; |
| 191 | } |
| 192 | /*}}}*/ |
| 193 | // AcqMethod::MediaFail - Syncronous request for new media /*{{{*/ |
| 194 | // --------------------------------------------------------------------- |
| 195 | /* This sends a 403 Media Failure message to the APT and waits for it |
| 196 | to be ackd */ |
| 197 | bool pkgAcqMethod::MediaFail(string Required,string Drive) |
| 198 | { |
| 199 | char S[1024]; |
| 200 | snprintf(S,sizeof(S),"403 Media Failure\nMedia: %s\nDrive: %s\n\n", |
| 201 | Required.c_str(),Drive.c_str()); |
| 202 | |
| 203 | if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S)) |
| 204 | exit(100); |
| 205 | |
| 206 | vector<string> MyMessages; |
| 207 | |
| 208 | /* Here we read messages until we find a 603, each non 603 message is |
| 209 | appended to the main message list for later processing */ |
| 210 | while (1) |
| 211 | { |
| 212 | if (WaitFd(STDIN_FILENO) == false) |
| 213 | return false; |
| 214 | |
| 215 | if (ReadMessages(STDIN_FILENO,MyMessages) == false) |
| 216 | return false; |
| 217 | |
| 218 | string Message = MyMessages.front(); |
| 219 | MyMessages.erase(MyMessages.begin()); |
| 220 | |
| 221 | // Fetch the message number |
| 222 | char *End; |
| 223 | int Number = strtol(Message.c_str(),&End,10); |
| 224 | if (End == Message.c_str()) |
| 225 | { |
| 226 | cerr << "Malformed message!" << endl; |
| 227 | exit(100); |
| 228 | } |
| 229 | |
| 230 | // Change ack |
| 231 | if (Number == 603) |
| 232 | { |
| 233 | while (MyMessages.empty() == false) |
| 234 | { |
| 235 | Messages.push_back(MyMessages.front()); |
| 236 | MyMessages.erase(MyMessages.begin()); |
| 237 | } |
| 238 | |
| 239 | return !StringToBool(LookupTag(Message,"Fail"),false); |
| 240 | } |
| 241 | |
| 242 | Messages.push_back(Message); |
| 243 | } |
| 244 | } |
| 245 | /*}}}*/ |
| 246 | // AcqMethod::Configuration - Handle the configuration message /*{{{*/ |
| 247 | // --------------------------------------------------------------------- |
| 248 | /* This parses each configuration entry and puts it into the _config |
| 249 | Configuration class. */ |
| 250 | bool pkgAcqMethod::Configuration(string Message) |
| 251 | { |
| 252 | ::Configuration &Cnf = *_config; |
| 253 | |
| 254 | const char *I = Message.begin(); |
| 255 | |
| 256 | unsigned int Length = strlen("Config-Item"); |
| 257 | for (; I + Length < Message.end(); I++) |
| 258 | { |
| 259 | // Not a config item |
| 260 | if (I[Length] != ':' || stringcasecmp(I,I+Length,"Config-Item") != 0) |
| 261 | continue; |
| 262 | |
| 263 | I += Length + 1; |
| 264 | |
| 265 | for (; I < Message.end() && *I == ' '; I++); |
| 266 | const char *Equals = I; |
| 267 | for (; Equals < Message.end() && *Equals != '='; Equals++); |
| 268 | const char *End = Equals; |
| 269 | for (; End < Message.end() && *End != '\n'; End++); |
| 270 | if (End == Equals) |
| 271 | return false; |
| 272 | |
| 273 | Cnf.Set(string(I,Equals-I),string(Equals+1,End-Equals-1)); |
| 274 | I = End; |
| 275 | } |
| 276 | |
| 277 | return true; |
| 278 | } |
| 279 | /*}}}*/ |
| 280 | // AcqMethod::Run - Run the message engine /*{{{*/ |
| 281 | // --------------------------------------------------------------------- |
| 282 | /* */ |
| 283 | int pkgAcqMethod::Run(bool Single) |
| 284 | { |
| 285 | while (1) |
| 286 | { |
| 287 | // Block if the message queue is empty |
| 288 | if (Messages.empty() == true) |
| 289 | { |
| 290 | if (Single == false) |
| 291 | if (WaitFd(STDIN_FILENO) == false) |
| 292 | return 0; |
| 293 | |
| 294 | if (ReadMessages(STDIN_FILENO,Messages) == false) |
| 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | // Single mode exits if the message queue is empty |
| 299 | if (Single == true && Messages.empty() == true) |
| 300 | return 0; |
| 301 | |
| 302 | string Message = Messages.front(); |
| 303 | Messages.erase(Messages.begin()); |
| 304 | |
| 305 | // Fetch the message number |
| 306 | char *End; |
| 307 | int Number = strtol(Message.c_str(),&End,10); |
| 308 | if (End == Message.c_str()) |
| 309 | { |
| 310 | cerr << "Malformed message!" << endl; |
| 311 | return 100; |
| 312 | } |
| 313 | |
| 314 | switch (Number) |
| 315 | { |
| 316 | case 601: |
| 317 | if (Configuration(Message) == false) |
| 318 | return 100; |
| 319 | break; |
| 320 | |
| 321 | case 600: |
| 322 | { |
| 323 | FetchItem *Tmp = new FetchItem; |
| 324 | |
| 325 | Tmp->Uri = LookupTag(Message,"URI"); |
| 326 | Tmp->DestFile = LookupTag(Message,"FileName"); |
| 327 | if (StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified) == false) |
| 328 | Tmp->LastModified = 0; |
| 329 | Tmp->IndexFile = StringToBool(LookupTag(Message,"Index-File"),false); |
| 330 | Tmp->Next = 0; |
| 331 | |
| 332 | // Append it to the list |
| 333 | FetchItem **I = &Queue; |
| 334 | for (; *I != 0; I = &(*I)->Next); |
| 335 | *I = Tmp; |
| 336 | if (QueueBack == 0) |
| 337 | QueueBack = Tmp; |
| 338 | |
| 339 | // Notify that this item is to be fetched. |
| 340 | if (Fetch(Tmp) == false) |
| 341 | Fail(); |
| 342 | |
| 343 | break; |
| 344 | } |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | return 0; |
| 349 | } |
| 350 | /*}}}*/ |
| 351 | // AcqMethod::Log - Send a log message /*{{{*/ |
| 352 | // --------------------------------------------------------------------- |
| 353 | /* */ |
| 354 | void pkgAcqMethod::Log(const char *Format,...) |
| 355 | { |
| 356 | string CurrentURI = "<UNKNOWN>"; |
| 357 | if (Queue != 0) |
| 358 | CurrentURI = Queue->Uri; |
| 359 | |
| 360 | va_list args; |
| 361 | va_start(args,Format); |
| 362 | |
| 363 | // sprintf the description |
| 364 | char S[1024]; |
| 365 | unsigned int Len = snprintf(S,sizeof(S),"101 Log\nURI: %s\n" |
| 366 | "Message: ",CurrentURI.c_str()); |
| 367 | |
| 368 | vsnprintf(S+Len,sizeof(S)-Len,Format,args); |
| 369 | strcat(S,"\n\n"); |
| 370 | |
| 371 | if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S)) |
| 372 | exit(100); |
| 373 | } |
| 374 | /*}}}*/ |
| 375 | // AcqMethod::Status - Send a status message /*{{{*/ |
| 376 | // --------------------------------------------------------------------- |
| 377 | /* */ |
| 378 | void pkgAcqMethod::Status(const char *Format,...) |
| 379 | { |
| 380 | string CurrentURI = "<UNKNOWN>"; |
| 381 | if (Queue != 0) |
| 382 | CurrentURI = Queue->Uri; |
| 383 | |
| 384 | va_list args; |
| 385 | va_start(args,Format); |
| 386 | |
| 387 | // sprintf the description |
| 388 | char S[1024]; |
| 389 | unsigned int Len = snprintf(S,sizeof(S),"102 Status\nURI: %s\n" |
| 390 | "Message: ",CurrentURI.c_str()); |
| 391 | |
| 392 | vsnprintf(S+Len,sizeof(S)-Len,Format,args); |
| 393 | strcat(S,"\n\n"); |
| 394 | |
| 395 | if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S)) |
| 396 | exit(100); |
| 397 | } |
| 398 | /*}}}*/ |
| 399 | |
| 400 | // AcqMethod::FetchResult::FetchResult - Constructor /*{{{*/ |
| 401 | // --------------------------------------------------------------------- |
| 402 | /* */ |
| 403 | pkgAcqMethod::FetchResult::FetchResult() : LastModified(0), |
| 404 | IMSHit(false), Size(0), ResumePoint(0) |
| 405 | { |
| 406 | } |
| 407 | /*}}}*/ |
| 408 | |