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f55a958f AL |
1 | // -*- mode: cpp; mode: fold -*- |
2 | // Description /*{{{*/ | |
b3d44315 | 3 | // $Id: deblistparser.cc,v 1.29.2.5 2004/01/06 01:43:44 mdz Exp $ |
f55a958f AL |
4 | /* ###################################################################### |
5 | ||
6 | Package Cache Generator - Generator for the cache structure. | |
7 | ||
8 | This builds the cache structure from the abstract package list parser. | |
9 | ||
10 | ##################################################################### */ | |
11 | /*}}}*/ | |
12 | // Include Files /*{{{*/ | |
ea542140 DK |
13 | #include <config.h> |
14 | ||
094a497d AL |
15 | #include <apt-pkg/deblistparser.h> |
16 | #include <apt-pkg/error.h> | |
17 | #include <apt-pkg/configuration.h> | |
424ff669 | 18 | #include <apt-pkg/cachefilter.h> |
45df0ad2 | 19 | #include <apt-pkg/aptconfiguration.h> |
cdcc6d34 | 20 | #include <apt-pkg/strutl.h> |
472ff00e | 21 | #include <apt-pkg/fileutl.h> |
204fbdcc | 22 | #include <apt-pkg/crc-16.h> |
a52f938b | 23 | #include <apt-pkg/md5.h> |
453b82a3 DK |
24 | #include <apt-pkg/mmap.h> |
25 | #include <apt-pkg/pkgcache.h> | |
26 | #include <apt-pkg/cacheiterators.h> | |
27 | #include <apt-pkg/tagfile.h> | |
5c0d3668 | 28 | #include <apt-pkg/macros.h> |
9c14e3d6 | 29 | |
453b82a3 DK |
30 | #include <stddef.h> |
31 | #include <string.h> | |
32 | #include <algorithm> | |
33 | #include <string> | |
34 | #include <vector> | |
e7b470ee | 35 | #include <ctype.h> |
f55a958f AL |
36 | /*}}}*/ |
37 | ||
8f3ba4e8 DK |
38 | using std::string; |
39 | ||
84de0cea MV |
40 | static debListParser::WordList PrioList[] = { |
41 | {"required",pkgCache::State::Required}, | |
42 | {"important",pkgCache::State::Important}, | |
43 | {"standard",pkgCache::State::Standard}, | |
44 | {"optional",pkgCache::State::Optional}, | |
45 | {"extra",pkgCache::State::Extra}, | |
67c3067f | 46 | {NULL, 0}}; |
b2e465d6 | 47 | |
f55a958f AL |
48 | // ListParser::debListParser - Constructor /*{{{*/ |
49 | // --------------------------------------------------------------------- | |
5dd4c8b8 DK |
50 | /* Provide an architecture and only this one and "all" will be accepted |
51 | in Step(), if no Architecture is given we will accept every arch | |
52 | we would accept in general with checkArchitecture() */ | |
53 | debListParser::debListParser(FileFd *File, string const &Arch) : Tags(File), | |
54 | Arch(Arch) { | |
33dd02e3 DK |
55 | if (Arch == "native") |
56 | this->Arch = _config->Find("APT::Architecture"); | |
dcfa253f DK |
57 | Architectures = APT::Configuration::getArchitectures(); |
58 | MultiArchEnabled = Architectures.size() > 1; | |
0149949b AL |
59 | } |
60 | /*}}}*/ | |
f55a958f AL |
61 | // ListParser::UniqFindTagWrite - Find the tag and write a unq string /*{{{*/ |
62 | // --------------------------------------------------------------------- | |
63 | /* */ | |
64 | unsigned long debListParser::UniqFindTagWrite(const char *Tag) | |
65 | { | |
66 | const char *Start; | |
67 | const char *Stop; | |
68 | if (Section.Find(Tag,Start,Stop) == false) | |
69 | return 0; | |
70 | return WriteUniqString(Start,Stop - Start); | |
71 | } | |
72 | /*}}}*/ | |
f55a958f AL |
73 | // ListParser::Package - Return the package name /*{{{*/ |
74 | // --------------------------------------------------------------------- | |
75 | /* This is to return the name of the package this section describes */ | |
5bf15716 | 76 | string debListParser::Package() { |
33dd02e3 DK |
77 | string const Result = Section.FindS("Package"); |
78 | if(unlikely(Result.empty() == true)) | |
79 | _error->Error("Encountered a section with no Package: header"); | |
80 | return Result; | |
5bf15716 DK |
81 | } |
82 | /*}}}*/ | |
83 | // ListParser::Architecture - Return the package arch /*{{{*/ | |
84 | // --------------------------------------------------------------------- | |
28166356 | 85 | /* This will return the Architecture of the package this section describes */ |
5bf15716 | 86 | string debListParser::Architecture() { |
99a2ea5a | 87 | return Section.FindS("Architecture"); |
f55a958f AL |
88 | } |
89 | /*}}}*/ | |
857e9c13 DK |
90 | // ListParser::ArchitectureAll /*{{{*/ |
91 | // --------------------------------------------------------------------- | |
92 | /* */ | |
93 | bool debListParser::ArchitectureAll() { | |
33dd02e3 | 94 | return Section.FindS("Architecture") == "all"; |
f55a958f AL |
95 | } |
96 | /*}}}*/ | |
97 | // ListParser::Version - Return the version string /*{{{*/ | |
98 | // --------------------------------------------------------------------- | |
99 | /* This is to return the string describing the version in debian form, | |
100 | epoch:upstream-release. If this returns the blank string then the | |
101 | entry is assumed to only describe package properties */ | |
102 | string debListParser::Version() | |
103 | { | |
b0b4efb9 | 104 | return Section.FindS("Version"); |
f55a958f AL |
105 | } |
106 | /*}}}*/ | |
e33dbfe5 | 107 | unsigned char debListParser::ParseMultiArch(bool const showErrors) /*{{{*/ |
0149949b | 108 | { |
e33dbfe5 | 109 | unsigned char MA; |
28166356 | 110 | string const MultiArch = Section.FindS("Multi-Arch"); |
8f617600 | 111 | if (MultiArch.empty() == true || MultiArch == "no") |
e33dbfe5 | 112 | MA = pkgCache::Version::None; |
28166356 | 113 | else if (MultiArch == "same") { |
ca238ede | 114 | if (ArchitectureAll() == true) |
25396fb0 | 115 | { |
e33dbfe5 DK |
116 | if (showErrors == true) |
117 | _error->Warning("Architecture: all package '%s' can't be Multi-Arch: same", | |
118 | Section.FindS("Package").c_str()); | |
119 | MA = pkgCache::Version::None; | |
25396fb0 | 120 | } |
28166356 | 121 | else |
e33dbfe5 | 122 | MA = pkgCache::Version::Same; |
28166356 DK |
123 | } |
124 | else if (MultiArch == "foreign") | |
e33dbfe5 | 125 | MA = pkgCache::Version::Foreign; |
28166356 | 126 | else if (MultiArch == "allowed") |
e33dbfe5 | 127 | MA = pkgCache::Version::Allowed; |
28166356 DK |
128 | else |
129 | { | |
e33dbfe5 DK |
130 | if (showErrors == true) |
131 | _error->Warning("Unknown Multi-Arch type '%s' for package '%s'", | |
132 | MultiArch.c_str(), Section.FindS("Package").c_str()); | |
133 | MA = pkgCache::Version::None; | |
25396fb0 DK |
134 | } |
135 | ||
ca238ede | 136 | if (ArchitectureAll() == true) |
e33dbfe5 | 137 | MA |= pkgCache::Version::All; |
ca238ede | 138 | |
e33dbfe5 DK |
139 | return MA; |
140 | } | |
141 | /*}}}*/ | |
142 | // ListParser::NewVersion - Fill in the version structure /*{{{*/ | |
143 | // --------------------------------------------------------------------- | |
144 | /* */ | |
145 | bool debListParser::NewVersion(pkgCache::VerIterator &Ver) | |
146 | { | |
147 | // Parse the section | |
4ea471ec DK |
148 | unsigned long const idxSection = UniqFindTagWrite("Section"); |
149 | Ver->Section = idxSection; | |
e33dbfe5 | 150 | Ver->MultiArch = ParseMultiArch(true); |
0149949b | 151 | // Archive Size |
e2c66de5 | 152 | Ver->Size = Section.FindULL("Size"); |
0149949b | 153 | // Unpacked Size (in K) |
e2c66de5 | 154 | Ver->InstalledSize = Section.FindULL("Installed-Size"); |
0149949b AL |
155 | Ver->InstalledSize *= 1024; |
156 | ||
157 | // Priority | |
158 | const char *Start; | |
159 | const char *Stop; | |
160 | if (Section.Find("Priority",Start,Stop) == true) | |
b2e465d6 AL |
161 | { |
162 | if (GrabWord(string(Start,Stop-Start),PrioList,Ver->Priority) == false) | |
421c8d10 | 163 | Ver->Priority = pkgCache::State::Extra; |
0149949b | 164 | } |
dcb79bae | 165 | |
6c139d6e | 166 | if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false) |
dcb79bae | 167 | return false; |
8efa2a3b | 168 | if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false) |
dcb79bae | 169 | return false; |
6c139d6e | 170 | if (ParseDepends(Ver,"Suggests",pkgCache::Dep::Suggests) == false) |
dcb79bae | 171 | return false; |
6c139d6e | 172 | if (ParseDepends(Ver,"Recommends",pkgCache::Dep::Recommends) == false) |
dcb79bae | 173 | return false; |
6c139d6e | 174 | if (ParseDepends(Ver,"Conflicts",pkgCache::Dep::Conflicts) == false) |
dcb79bae | 175 | return false; |
308c7d30 IJ |
176 | if (ParseDepends(Ver,"Breaks",pkgCache::Dep::DpkgBreaks) == false) |
177 | return false; | |
f55ece0e | 178 | if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false) |
dcb79bae | 179 | return false; |
f8ae7e8b | 180 | if (ParseDepends(Ver,"Enhances",pkgCache::Dep::Enhances) == false) |
181 | return false; | |
dcb79bae | 182 | |
b2e465d6 AL |
183 | // Obsolete. |
184 | if (ParseDepends(Ver,"Optional",pkgCache::Dep::Suggests) == false) | |
185 | return false; | |
186 | ||
dcb79bae AL |
187 | if (ParseProvides(Ver) == false) |
188 | return false; | |
0149949b | 189 | |
f55a958f AL |
190 | return true; |
191 | } | |
192 | /*}}}*/ | |
a52f938b OS |
193 | // ListParser::Description - Return the description string /*{{{*/ |
194 | // --------------------------------------------------------------------- | |
195 | /* This is to return the string describing the package in debian | |
196 | form. If this returns the blank string then the entry is assumed to | |
197 | only describe package properties */ | |
198 | string debListParser::Description() | |
199 | { | |
45df0ad2 DK |
200 | string const lang = DescriptionLanguage(); |
201 | if (lang.empty()) | |
a52f938b OS |
202 | return Section.FindS("Description"); |
203 | else | |
45df0ad2 | 204 | return Section.FindS(string("Description-").append(lang).c_str()); |
a52f938b OS |
205 | } |
206 | /*}}}*/ | |
207 | // ListParser::DescriptionLanguage - Return the description lang string /*{{{*/ | |
208 | // --------------------------------------------------------------------- | |
209 | /* This is to return the string describing the language of | |
210 | description. If this returns the blank string then the entry is | |
211 | assumed to describe original description. */ | |
212 | string debListParser::DescriptionLanguage() | |
213 | { | |
45df0ad2 DK |
214 | if (Section.FindS("Description").empty() == false) |
215 | return ""; | |
216 | ||
85c26e8c | 217 | std::vector<string> const lang = APT::Configuration::getLanguages(true); |
45df0ad2 | 218 | for (std::vector<string>::const_iterator l = lang.begin(); |
f7f0d6c7 | 219 | l != lang.end(); ++l) |
45df0ad2 DK |
220 | if (Section.FindS(string("Description-").append(*l).c_str()).empty() == false) |
221 | return *l; | |
222 | ||
223 | return ""; | |
a52f938b OS |
224 | } |
225 | /*}}}*/ | |
226 | // ListParser::Description - Return the description_md5 MD5SumValue /*{{{*/ | |
227 | // --------------------------------------------------------------------- | |
770c32ec MV |
228 | /* This is to return the md5 string to allow the check if it is the right |
229 | description. If no Description-md5 is found in the section it will be | |
230 | calculated. | |
231 | */ | |
a52f938b OS |
232 | MD5SumValue debListParser::Description_md5() |
233 | { | |
fc691496 DK |
234 | string const value = Section.FindS("Description-md5"); |
235 | if (value.empty() == true) | |
770c32ec | 236 | { |
99359751 DK |
237 | std::string const desc = Description() + "\n"; |
238 | if (desc == "\n") | |
239 | return MD5SumValue(); | |
240 | ||
a52f938b | 241 | MD5Summation md5; |
99359751 | 242 | md5.Add(desc.c_str()); |
a52f938b | 243 | return md5.Result(); |
fc691496 DK |
244 | } |
245 | else if (likely(value.size() == 32)) | |
246 | { | |
247 | if (likely(value.find_first_not_of("0123456789abcdefABCDEF") == string::npos)) | |
248 | return MD5SumValue(value); | |
249 | _error->Error("Malformed Description-md5 line; includes invalid character '%s'", value.c_str()); | |
250 | return MD5SumValue(); | |
251 | } | |
252 | _error->Error("Malformed Description-md5 line; doesn't have the required length (32 != %d) '%s'", (int)value.size(), value.c_str()); | |
253 | return MD5SumValue(); | |
a52f938b OS |
254 | } |
255 | /*}}}*/ | |
f55a958f AL |
256 | // ListParser::UsePackage - Update a package structure /*{{{*/ |
257 | // --------------------------------------------------------------------- | |
258 | /* This is called to update the package with any new information | |
259 | that might be found in the section */ | |
32b9a14c DK |
260 | bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg, |
261 | pkgCache::VerIterator &Ver) | |
f55a958f AL |
262 | { |
263 | if (Pkg->Section == 0) | |
4ea471ec DK |
264 | { |
265 | unsigned long const idxSection = UniqFindTagWrite("Section"); | |
266 | Pkg->Section = idxSection; | |
267 | } | |
5dd4c8b8 | 268 | |
5dd4c8b8 | 269 | string const static myArch = _config->Find("APT::Architecture"); |
e5a91f7e DK |
270 | // Possible values are: "all", "native", "installed" and "none" |
271 | // The "installed" mode is handled by ParseStatus(), See #544481 and friends. | |
272 | string const static essential = _config->Find("pkgCacheGen::Essential", "all"); | |
273 | if (essential == "all" || | |
274 | (essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch())) | |
5dd4c8b8 DK |
275 | if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false) |
276 | return false; | |
138d4b3d | 277 | if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false) |
f55a958f | 278 | return false; |
138d4b3d AL |
279 | |
280 | if (strcmp(Pkg.Name(),"apt") == 0) | |
a552f37e DK |
281 | { |
282 | if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) || | |
283 | essential == "all") | |
284 | Pkg->Flags |= pkgCache::Flag::Essential | pkgCache::Flag::Important; | |
285 | else | |
286 | Pkg->Flags |= pkgCache::Flag::Important; | |
287 | } | |
288 | ||
f55a958f AL |
289 | if (ParseStatus(Pkg,Ver) == false) |
290 | return false; | |
291 | return true; | |
292 | } | |
293 | /*}}}*/ | |
204fbdcc AL |
294 | // ListParser::VersionHash - Compute a unique hash for this version /*{{{*/ |
295 | // --------------------------------------------------------------------- | |
296 | /* */ | |
297 | unsigned short debListParser::VersionHash() | |
298 | { | |
299 | const char *Sections[] ={"Installed-Size", | |
300 | "Depends", | |
301 | "Pre-Depends", | |
f78439bf AL |
302 | // "Suggests", |
303 | // "Recommends", | |
204fbdcc | 304 | "Conflicts", |
308c7d30 | 305 | "Breaks", |
204fbdcc AL |
306 | "Replaces",0}; |
307 | unsigned long Result = INIT_FCS; | |
418a471f | 308 | char S[1024]; |
d9682cf8 | 309 | for (const char * const *I = Sections; *I != 0; ++I) |
204fbdcc AL |
310 | { |
311 | const char *Start; | |
312 | const char *End; | |
313 | if (Section.Find(*I,Start,End) == false || End - Start >= (signed)sizeof(S)) | |
314 | continue; | |
315 | ||
316 | /* Strip out any spaces from the text, this undoes dpkgs reformatting | |
421c8d10 AL |
317 | of certain fields. dpkg also has the rather interesting notion of |
318 | reformatting depends operators < -> <= */ | |
470a5c38 | 319 | char *J = S; |
d9682cf8 | 320 | for (; Start != End; ++Start) |
421c8d10 | 321 | { |
d9682cf8 DK |
322 | if (isspace(*Start) != 0) |
323 | continue; | |
324 | *J++ = tolower_ascii(*Start); | |
325 | ||
326 | if ((*Start == '<' || *Start == '>') && Start[1] != *Start && Start[1] != '=') | |
470a5c38 | 327 | *J++ = '='; |
421c8d10 | 328 | } |
418a471f | 329 | |
470a5c38 | 330 | Result = AddCRC16(Result,S,J - S); |
204fbdcc AL |
331 | } |
332 | ||
333 | return Result; | |
334 | } | |
335 | /*}}}*/ | |
dcb79bae | 336 | // ListParser::ParseStatus - Parse the status field /*{{{*/ |
f55a958f AL |
337 | // --------------------------------------------------------------------- |
338 | /* Status lines are of the form, | |
339 | Status: want flag status | |
340 | want = unknown, install, hold, deinstall, purge | |
341 | flag = ok, reinstreq, hold, hold-reinstreq | |
a005475e | 342 | status = not-installed, unpacked, half-configured, |
f55a958f AL |
343 | half-installed, config-files, post-inst-failed, |
344 | removal-failed, installed | |
345 | ||
346 | Some of the above are obsolete (I think?) flag = hold-* and | |
347 | status = post-inst-failed, removal-failed at least. | |
348 | */ | |
32b9a14c DK |
349 | bool debListParser::ParseStatus(pkgCache::PkgIterator &Pkg, |
350 | pkgCache::VerIterator &Ver) | |
f55a958f AL |
351 | { |
352 | const char *Start; | |
353 | const char *Stop; | |
354 | if (Section.Find("Status",Start,Stop) == false) | |
355 | return true; | |
6bc703c2 DK |
356 | |
357 | // UsePackage() is responsible for setting the flag in the default case | |
358 | bool const static essential = _config->Find("pkgCacheGen::Essential", "") == "installed"; | |
359 | if (essential == true && | |
360 | Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false) | |
361 | return false; | |
362 | ||
f55a958f AL |
363 | // Isolate the first word |
364 | const char *I = Start; | |
365 | for(; I < Stop && *I != ' '; I++); | |
366 | if (I >= Stop || *I != ' ') | |
367 | return _error->Error("Malformed Status line"); | |
368 | ||
369 | // Process the want field | |
6c139d6e AL |
370 | WordList WantList[] = {{"unknown",pkgCache::State::Unknown}, |
371 | {"install",pkgCache::State::Install}, | |
372 | {"hold",pkgCache::State::Hold}, | |
373 | {"deinstall",pkgCache::State::DeInstall}, | |
b2e465d6 | 374 | {"purge",pkgCache::State::Purge}, |
67c3067f | 375 | {NULL, 0}}; |
b2e465d6 | 376 | if (GrabWord(string(Start,I-Start),WantList,Pkg->SelectedState) == false) |
f55a958f AL |
377 | return _error->Error("Malformed 1st word in the Status line"); |
378 | ||
379 | // Isloate the next word | |
380 | I++; | |
381 | Start = I; | |
382 | for(; I < Stop && *I != ' '; I++); | |
383 | if (I >= Stop || *I != ' ') | |
384 | return _error->Error("Malformed status line, no 2nd word"); | |
385 | ||
386 | // Process the flag field | |
6c139d6e AL |
387 | WordList FlagList[] = {{"ok",pkgCache::State::Ok}, |
388 | {"reinstreq",pkgCache::State::ReInstReq}, | |
389 | {"hold",pkgCache::State::HoldInst}, | |
b2e465d6 | 390 | {"hold-reinstreq",pkgCache::State::HoldReInstReq}, |
67c3067f | 391 | {NULL, 0}}; |
b2e465d6 | 392 | if (GrabWord(string(Start,I-Start),FlagList,Pkg->InstState) == false) |
f55a958f AL |
393 | return _error->Error("Malformed 2nd word in the Status line"); |
394 | ||
395 | // Isloate the last word | |
396 | I++; | |
397 | Start = I; | |
398 | for(; I < Stop && *I != ' '; I++); | |
399 | if (I != Stop) | |
400 | return _error->Error("Malformed Status line, no 3rd word"); | |
401 | ||
402 | // Process the flag field | |
6c139d6e AL |
403 | WordList StatusList[] = {{"not-installed",pkgCache::State::NotInstalled}, |
404 | {"unpacked",pkgCache::State::UnPacked}, | |
405 | {"half-configured",pkgCache::State::HalfConfigured}, | |
406 | {"installed",pkgCache::State::Installed}, | |
6c139d6e AL |
407 | {"half-installed",pkgCache::State::HalfInstalled}, |
408 | {"config-files",pkgCache::State::ConfigFiles}, | |
9d06bc80 MV |
409 | {"triggers-awaited",pkgCache::State::TriggersAwaited}, |
410 | {"triggers-pending",pkgCache::State::TriggersPending}, | |
6c139d6e | 411 | {"post-inst-failed",pkgCache::State::HalfConfigured}, |
b2e465d6 | 412 | {"removal-failed",pkgCache::State::HalfInstalled}, |
67c3067f | 413 | {NULL, 0}}; |
b2e465d6 | 414 | if (GrabWord(string(Start,I-Start),StatusList,Pkg->CurrentState) == false) |
f55a958f AL |
415 | return _error->Error("Malformed 3rd word in the Status line"); |
416 | ||
417 | /* A Status line marks the package as indicating the current | |
418 | version as well. Only if it is actually installed.. Otherwise | |
419 | the interesting dpkg handling of the status file creates bogus | |
420 | entries. */ | |
6c139d6e AL |
421 | if (!(Pkg->CurrentState == pkgCache::State::NotInstalled || |
422 | Pkg->CurrentState == pkgCache::State::ConfigFiles)) | |
f55a958f AL |
423 | { |
424 | if (Ver.end() == true) | |
425 | _error->Warning("Encountered status field in a non-version description"); | |
426 | else | |
427 | Pkg->CurrentVer = Ver.Index(); | |
428 | } | |
429 | ||
dcb79bae AL |
430 | return true; |
431 | } | |
a1826878 | 432 | |
b2e465d6 AL |
433 | const char *debListParser::ConvertRelation(const char *I,unsigned int &Op) |
434 | { | |
435 | // Determine the operator | |
436 | switch (*I) | |
437 | { | |
438 | case '<': | |
439 | I++; | |
440 | if (*I == '=') | |
441 | { | |
442 | I++; | |
443 | Op = pkgCache::Dep::LessEq; | |
444 | break; | |
445 | } | |
446 | ||
447 | if (*I == '<') | |
448 | { | |
449 | I++; | |
450 | Op = pkgCache::Dep::Less; | |
451 | break; | |
452 | } | |
453 | ||
454 | // < is the same as <= and << is really Cs < for some reason | |
455 | Op = pkgCache::Dep::LessEq; | |
456 | break; | |
457 | ||
458 | case '>': | |
459 | I++; | |
460 | if (*I == '=') | |
461 | { | |
462 | I++; | |
463 | Op = pkgCache::Dep::GreaterEq; | |
464 | break; | |
465 | } | |
466 | ||
467 | if (*I == '>') | |
468 | { | |
469 | I++; | |
470 | Op = pkgCache::Dep::Greater; | |
471 | break; | |
472 | } | |
473 | ||
474 | // > is the same as >= and >> is really Cs > for some reason | |
475 | Op = pkgCache::Dep::GreaterEq; | |
476 | break; | |
477 | ||
478 | case '=': | |
479 | Op = pkgCache::Dep::Equals; | |
480 | I++; | |
481 | break; | |
482 | ||
483 | // HACK around bad package definitions | |
484 | default: | |
485 | Op = pkgCache::Dep::Equals; | |
486 | break; | |
487 | } | |
488 | return I; | |
489 | } | |
a1826878 AL |
490 | /*}}}*/ |
491 | // ListParser::ParseDepends - Parse a dependency element /*{{{*/ | |
492 | // --------------------------------------------------------------------- | |
493 | /* This parses the dependency elements out of a standard string in place, | |
494 | bit by bit. */ | |
565ded7b JS |
495 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, |
496 | std::string &Package,std::string &Ver,unsigned int &Op) | |
497 | { return ParseDepends(Start, Stop, Package, Ver, Op, false, true, false); } | |
498 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, | |
499 | std::string &Package,std::string &Ver,unsigned int &Op, | |
500 | bool const &ParseArchFlags) | |
501 | { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, true, false); } | |
502 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, | |
503 | std::string &Package,std::string &Ver,unsigned int &Op, | |
504 | bool const &ParseArchFlags, bool const &StripMultiArch) | |
505 | { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, StripMultiArch, false); } | |
dcb79bae AL |
506 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, |
507 | string &Package,string &Ver, | |
41c81fd8 | 508 | unsigned int &Op, bool const &ParseArchFlags, |
565ded7b JS |
509 | bool const &StripMultiArch, |
510 | bool const &ParseRestrictionsList) | |
dcb79bae AL |
511 | { |
512 | // Strip off leading space | |
565ded7b | 513 | for (;Start != Stop && isspace(*Start) != 0; ++Start); |
dcb79bae AL |
514 | |
515 | // Parse off the package name | |
516 | const char *I = Start; | |
517 | for (;I != Stop && isspace(*I) == 0 && *I != '(' && *I != ')' && | |
565ded7b JS |
518 | *I != ',' && *I != '|' && *I != '[' && *I != ']' && |
519 | *I != '<' && *I != '>'; ++I); | |
dcb79bae AL |
520 | |
521 | // Malformed, no '(' | |
522 | if (I != Stop && *I == ')') | |
523 | return 0; | |
524 | ||
525 | if (I == Start) | |
526 | return 0; | |
527 | ||
528 | // Stash the package name | |
529 | Package.assign(Start,I - Start); | |
41c81fd8 DK |
530 | |
531 | // We don't want to confuse library users which can't handle MultiArch | |
550f6493 | 532 | string const arch = _config->Find("APT::Architecture"); |
41c81fd8 DK |
533 | if (StripMultiArch == true) { |
534 | size_t const found = Package.rfind(':'); | |
550f6493 DK |
535 | if (found != string::npos && |
536 | (strcmp(Package.c_str() + found, ":any") == 0 || | |
537 | strcmp(Package.c_str() + found, ":native") == 0 || | |
538 | strcmp(Package.c_str() + found + 1, arch.c_str()) == 0)) | |
41c81fd8 DK |
539 | Package = Package.substr(0,found); |
540 | } | |
541 | ||
dcb79bae AL |
542 | // Skip white space to the '(' |
543 | for (;I != Stop && isspace(*I) != 0 ; I++); | |
544 | ||
545 | // Parse a version | |
546 | if (I != Stop && *I == '(') | |
547 | { | |
548 | // Skip the '(' | |
549 | for (I++; I != Stop && isspace(*I) != 0 ; I++); | |
550 | if (I + 3 >= Stop) | |
551 | return 0; | |
b2e465d6 | 552 | I = ConvertRelation(I,Op); |
dcb79bae AL |
553 | |
554 | // Skip whitespace | |
555 | for (;I != Stop && isspace(*I) != 0; I++); | |
556 | Start = I; | |
404528bd DK |
557 | I = (const char*) memchr(I, ')', Stop - I); |
558 | if (I == NULL || Start == I) | |
559 | return 0; | |
dcb79bae | 560 | |
02f000a9 AL |
561 | // Skip trailing whitespace |
562 | const char *End = I; | |
563 | for (; End > Start && isspace(End[-1]); End--); | |
564 | ||
171c75f1 | 565 | Ver.assign(Start,End-Start); |
dcb79bae AL |
566 | I++; |
567 | } | |
568 | else | |
569 | { | |
171c75f1 | 570 | Ver.clear(); |
6c139d6e | 571 | Op = pkgCache::Dep::NoOp; |
dcb79bae AL |
572 | } |
573 | ||
574 | // Skip whitespace | |
575 | for (;I != Stop && isspace(*I) != 0; I++); | |
b2e465d6 AL |
576 | |
577 | if (ParseArchFlags == true) | |
578 | { | |
424ff669 | 579 | APT::CacheFilter::PackageArchitectureMatchesSpecification matchesArch(arch, false); |
9e10ad8a | 580 | |
b2e465d6 AL |
581 | // Parse an architecture |
582 | if (I != Stop && *I == '[') | |
583 | { | |
cd9694bf | 584 | ++I; |
b2e465d6 | 585 | // malformed |
cd9694bf DK |
586 | if (unlikely(I == Stop)) |
587 | return 0; | |
588 | ||
589 | const char *End = I; | |
590 | bool Found = false; | |
591 | bool NegArch = false; | |
592 | while (I != Stop) | |
b2e465d6 | 593 | { |
cd9694bf DK |
594 | // look for whitespace or ending ']' |
595 | for (;End != Stop && !isspace(*End) && *End != ']'; ++End); | |
596 | ||
597 | if (unlikely(End == Stop)) | |
b2e465d6 | 598 | return 0; |
9e10ad8a AL |
599 | |
600 | if (*I == '!') | |
cd9694bf | 601 | { |
9e10ad8a | 602 | NegArch = true; |
cd9694bf DK |
603 | ++I; |
604 | } | |
9e10ad8a | 605 | |
424ff669 DK |
606 | std::string arch(I, End); |
607 | if (arch.empty() == false && matchesArch(arch.c_str()) == true) | |
cd9694bf | 608 | { |
424ff669 | 609 | Found = true; |
cd9694bf DK |
610 | if (I[-1] != '!') |
611 | NegArch = false; | |
612 | // we found a match, so fast-forward to the end of the wildcards | |
613 | for (; End != Stop && *End != ']'; ++End); | |
614 | } | |
615 | ||
b2e465d6 AL |
616 | if (*End++ == ']') { |
617 | I = End; | |
618 | break; | |
619 | } | |
cd9694bf | 620 | |
b2e465d6 AL |
621 | I = End; |
622 | for (;I != Stop && isspace(*I) != 0; I++); | |
cd9694bf | 623 | } |
9e10ad8a | 624 | |
cd9694bf | 625 | if (NegArch == true) |
9e10ad8a | 626 | Found = !Found; |
cd9694bf DK |
627 | |
628 | if (Found == false) | |
b2e465d6 AL |
629 | Package = ""; /* not for this arch */ |
630 | } | |
cd9694bf | 631 | |
b2e465d6 AL |
632 | // Skip whitespace |
633 | for (;I != Stop && isspace(*I) != 0; I++); | |
634 | } | |
635 | ||
565ded7b JS |
636 | if (ParseRestrictionsList == true) |
637 | { | |
ac81c0f9 | 638 | // Parse a restrictions formula which is in disjunctive normal form: |
639 | // (foo AND bar) OR (blub AND bla) | |
640 | ||
641 | std::vector<string> const profiles = APT::Configuration::getBuildProfiles(); | |
642 | ||
643 | // if the next character is a restriction list, then by default the | |
644 | // dependency does not apply and the conditions have to be checked | |
645 | // if the next character is not a restriction list, then by default the | |
646 | // dependency applies | |
647 | bool applies1 = (*I != '<'); | |
648 | while (I != Stop) | |
565ded7b | 649 | { |
ac81c0f9 | 650 | if (*I != '<') |
651 | break; | |
652 | ||
565ded7b JS |
653 | ++I; |
654 | // malformed | |
655 | if (unlikely(I == Stop)) | |
656 | return 0; | |
657 | ||
565ded7b | 658 | const char *End = I; |
565ded7b | 659 | |
ac81c0f9 | 660 | // if of the prior restriction list is already fulfilled, then |
661 | // we can just skip to the end of the current list | |
662 | if (applies1) { | |
663 | for (;End != Stop && *End != '>'; ++End); | |
664 | I = ++End; | |
665 | // skip whitespace | |
666 | for (;I != Stop && isspace(*I) != 0; I++); | |
667 | } else { | |
668 | bool applies2 = true; | |
669 | // all the conditions inside a restriction list have to be | |
670 | // met so once we find one that is not met, we can skip to | |
671 | // the end of this list | |
672 | while (I != Stop) | |
565ded7b | 673 | { |
ac81c0f9 | 674 | // look for whitespace or ending '>' |
675 | // End now points to the character after the current term | |
676 | for (;End != Stop && !isspace(*End) && *End != '>'; ++End); | |
565ded7b | 677 | |
ac81c0f9 | 678 | if (unlikely(End == Stop)) |
679 | return 0; | |
565ded7b | 680 | |
ac81c0f9 | 681 | bool NegRestriction = false; |
682 | if (*I == '!') | |
683 | { | |
684 | NegRestriction = true; | |
685 | ++I; | |
686 | } | |
687 | ||
688 | std::string restriction(I, End); | |
565ded7b JS |
689 | |
690 | if (restriction.empty() == false && profiles.empty() == false && | |
ac81c0f9 | 691 | std::find(profiles.begin(), profiles.end(), restriction) != profiles.end()) |
565ded7b | 692 | { |
ac81c0f9 | 693 | if (NegRestriction) { |
694 | applies2 = false; | |
695 | // since one of the terms does not apply we don't have to check the others | |
696 | for (; End != Stop && *End != '>'; ++End); | |
697 | } | |
698 | } else { | |
699 | if (!NegRestriction) { | |
700 | applies2 = false; | |
701 | // since one of the terms does not apply we don't have to check the others | |
702 | for (; End != Stop && *End != '>'; ++End); | |
703 | } | |
704 | } | |
705 | ||
706 | if (*End++ == '>') { | |
707 | I = End; | |
708 | // skip whitespace | |
709 | for (;I != Stop && isspace(*I) != 0; I++); | |
710 | break; | |
565ded7b | 711 | } |
565ded7b | 712 | |
565ded7b | 713 | I = End; |
ac81c0f9 | 714 | // skip whitespace |
715 | for (;I != Stop && isspace(*I) != 0; I++); | |
716 | } | |
717 | if (applies2) { | |
718 | applies1 = true; | |
565ded7b | 719 | } |
565ded7b | 720 | } |
565ded7b JS |
721 | } |
722 | ||
ac81c0f9 | 723 | if (applies1 == false) { |
724 | Package = ""; //not for this restriction | |
725 | } | |
565ded7b JS |
726 | } |
727 | ||
dcb79bae | 728 | if (I != Stop && *I == '|') |
6c139d6e | 729 | Op |= pkgCache::Dep::Or; |
dcb79bae AL |
730 | |
731 | if (I == Stop || *I == ',' || *I == '|') | |
732 | { | |
733 | if (I != Stop) | |
734 | for (I++; I != Stop && isspace(*I) != 0; I++); | |
735 | return I; | |
736 | } | |
737 | ||
738 | return 0; | |
739 | } | |
740 | /*}}}*/ | |
741 | // ListParser::ParseDepends - Parse a dependency list /*{{{*/ | |
742 | // --------------------------------------------------------------------- | |
743 | /* This is the higher level depends parser. It takes a tag and generates | |
744 | a complete depends tree for the given version. */ | |
32b9a14c | 745 | bool debListParser::ParseDepends(pkgCache::VerIterator &Ver, |
dcb79bae AL |
746 | const char *Tag,unsigned int Type) |
747 | { | |
748 | const char *Start; | |
749 | const char *Stop; | |
750 | if (Section.Find(Tag,Start,Stop) == false) | |
751 | return true; | |
306eacf6 | 752 | |
28166356 | 753 | string const pkgArch = Ver.Arch(); |
dcb79bae | 754 | |
8efa2a3b | 755 | while (1) |
dcb79bae | 756 | { |
0f485ee5 TG |
757 | string Package; |
758 | string Version; | |
759 | unsigned int Op; | |
760 | ||
565ded7b | 761 | Start = ParseDepends(Start, Stop, Package, Version, Op, false, false, false); |
dcb79bae AL |
762 | if (Start == 0) |
763 | return _error->Error("Problem parsing dependency %s",Tag); | |
0f485ee5 | 764 | size_t const found = Package.rfind(':'); |
306eacf6 | 765 | |
cef094c2 DK |
766 | // If negative is unspecific it needs to apply on all architectures |
767 | if (MultiArchEnabled == true && found == string::npos && | |
306eacf6 DK |
768 | (Type == pkgCache::Dep::Conflicts || |
769 | Type == pkgCache::Dep::DpkgBreaks || | |
770 | Type == pkgCache::Dep::Replaces)) | |
771 | { | |
dcfa253f DK |
772 | for (std::vector<std::string>::const_iterator a = Architectures.begin(); |
773 | a != Architectures.end(); ++a) | |
306eacf6 DK |
774 | if (NewDepends(Ver,Package,*a,Version,Op,Type) == false) |
775 | return false; | |
c919ad6e DK |
776 | if (NewDepends(Ver,Package,"none",Version,Op,Type) == false) |
777 | return false; | |
306eacf6 | 778 | } |
0f485ee5 TG |
779 | else if (MultiArchEnabled == true && found != string::npos && |
780 | strcmp(Package.c_str() + found, ":any") != 0) | |
781 | { | |
782 | string Arch = Package.substr(found+1, string::npos); | |
783 | Package = Package.substr(0, found); | |
784 | // Such dependencies are not supposed to be accepted … | |
785 | // … but this is probably the best thing to do. | |
786 | if (Arch == "native") | |
787 | Arch = _config->Find("APT::Architecture"); | |
788 | if (NewDepends(Ver,Package,Arch,Version,Op,Type) == false) | |
789 | return false; | |
790 | } | |
c919ad6e DK |
791 | else |
792 | { | |
793 | if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false) | |
794 | return false; | |
795 | if ((Type == pkgCache::Dep::Conflicts || | |
796 | Type == pkgCache::Dep::DpkgBreaks || | |
797 | Type == pkgCache::Dep::Replaces) && | |
798 | NewDepends(Ver, Package, | |
799 | (pkgArch != "none") ? "none" : _config->Find("APT::Architecture"), | |
800 | Version,Op,Type) == false) | |
801 | return false; | |
802 | } | |
8efa2a3b AL |
803 | if (Start == Stop) |
804 | break; | |
dcb79bae AL |
805 | } |
806 | return true; | |
807 | } | |
808 | /*}}}*/ | |
809 | // ListParser::ParseProvides - Parse the provides list /*{{{*/ | |
810 | // --------------------------------------------------------------------- | |
811 | /* */ | |
32b9a14c | 812 | bool debListParser::ParseProvides(pkgCache::VerIterator &Ver) |
dcb79bae AL |
813 | { |
814 | const char *Start; | |
815 | const char *Stop; | |
67e0766f | 816 | if (Section.Find("Provides",Start,Stop) == true) |
dcb79bae | 817 | { |
67e0766f DK |
818 | string Package; |
819 | string Version; | |
28166356 | 820 | string const Arch = Ver.Arch(); |
67e0766f DK |
821 | unsigned int Op; |
822 | ||
823 | while (1) | |
824 | { | |
825 | Start = ParseDepends(Start,Stop,Package,Version,Op); | |
826 | if (Start == 0) | |
827 | return _error->Error("Problem parsing Provides line"); | |
40faab46 DK |
828 | if (Op != pkgCache::Dep::NoOp && Op != pkgCache::Dep::Equals) { |
829 | _error->Warning("Ignoring Provides line with non-equal DepCompareOp for package %s", Package.c_str()); | |
04340db3 DK |
830 | } else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) { |
831 | if (NewProvidesAllArch(Ver, Package, Version) == false) | |
832 | return false; | |
67e0766f DK |
833 | } else { |
834 | if (NewProvides(Ver, Package, Arch, Version) == false) | |
835 | return false; | |
836 | } | |
837 | ||
838 | if (Start == Stop) | |
839 | break; | |
b63380b0 | 840 | } |
67e0766f | 841 | } |
dcb79bae | 842 | |
b4140ecf | 843 | if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed) |
4d174dc8 DK |
844 | { |
845 | string const Package = string(Ver.ParentPkg().Name()).append(":").append("any"); | |
60dcec6d | 846 | return NewProvidesAllArch(Ver, Package, Ver.VerStr()); |
dcb79bae | 847 | } |
894d672e | 848 | else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) |
60dcec6d | 849 | return NewProvidesAllArch(Ver, Ver.ParentPkg().Name(), Ver.VerStr()); |
dcb79bae | 850 | |
60dcec6d DK |
851 | return true; |
852 | } | |
853 | /*}}}*/ | |
854 | // ListParser::NewProvides - add provides for all architectures /*{{{*/ | |
855 | bool debListParser::NewProvidesAllArch(pkgCache::VerIterator &Ver, string const &Package, | |
856 | string const &Version) { | |
dcfa253f DK |
857 | for (std::vector<string>::const_iterator a = Architectures.begin(); |
858 | a != Architectures.end(); ++a) | |
67e0766f DK |
859 | { |
860 | if (NewProvides(Ver, Package, *a, Version) == false) | |
861 | return false; | |
dcb79bae | 862 | } |
f55a958f AL |
863 | return true; |
864 | } | |
865 | /*}}}*/ | |
866 | // ListParser::GrabWord - Matches a word and returns /*{{{*/ | |
867 | // --------------------------------------------------------------------- | |
868 | /* Looks for a word in a list of words - for ParseStatus */ | |
b2e465d6 | 869 | bool debListParser::GrabWord(string Word,WordList *List,unsigned char &Out) |
f55a958f | 870 | { |
b2e465d6 | 871 | for (unsigned int C = 0; List[C].Str != 0; C++) |
f55a958f AL |
872 | { |
873 | if (strcasecmp(Word.c_str(),List[C].Str) == 0) | |
874 | { | |
875 | Out = List[C].Val; | |
876 | return true; | |
877 | } | |
878 | } | |
879 | return false; | |
880 | } | |
881 | /*}}}*/ | |
882 | // ListParser::Step - Move to the next section in the file /*{{{*/ | |
883 | // --------------------------------------------------------------------- | |
1e3f4083 | 884 | /* This has to be careful to only process the correct architecture */ |
f55a958f AL |
885 | bool debListParser::Step() |
886 | { | |
dcb79bae | 887 | iOffset = Tags.Offset(); |
0149949b | 888 | while (Tags.Step(Section) == true) |
ddc1d8d0 AL |
889 | { |
890 | /* See if this is the correct Architecture, if it isn't then we | |
891 | drop the whole section. A missing arch tag only happens (in theory) | |
892 | inside the Status file, so that is a positive return */ | |
5dd4c8b8 | 893 | string const Architecture = Section.FindS("Architecture"); |
9c14e3d6 | 894 | |
dd13742e | 895 | if (Arch.empty() == true || Arch == "any" || MultiArchEnabled == false) |
5dd4c8b8 DK |
896 | { |
897 | if (APT::Configuration::checkArchitecture(Architecture) == true) | |
898 | return true; | |
c919ad6e DK |
899 | /* parse version stanzas without an architecture only in the status file |
900 | (and as misfortune bycatch flat-archives) */ | |
901 | if ((Arch.empty() == true || Arch == "any") && Architecture.empty() == true) | |
902 | return true; | |
5dd4c8b8 DK |
903 | } |
904 | else | |
905 | { | |
906 | if (Architecture == Arch) | |
907 | return true; | |
0149949b | 908 | |
28166356 | 909 | if (Architecture == "all" && Arch == _config->Find("APT::Architecture")) |
5dd4c8b8 DK |
910 | return true; |
911 | } | |
dcb79bae AL |
912 | |
913 | iOffset = Tags.Offset(); | |
0149949b AL |
914 | } |
915 | return false; | |
f55a958f AL |
916 | } |
917 | /*}}}*/ | |
b0b4efb9 AL |
918 | // ListParser::LoadReleaseInfo - Load the release information /*{{{*/ |
919 | // --------------------------------------------------------------------- | |
920 | /* */ | |
32b9a14c | 921 | bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI, |
f2152f03 | 922 | FileFd &File, string component) |
b0b4efb9 | 923 | { |
f2152f03 MV |
924 | // apt-secure does no longer download individual (per-section) Release |
925 | // file. to provide Component pinning we use the section name now | |
2b803d40 DK |
926 | map_ptrloc const storage = WriteUniqString(component); |
927 | FileI->Component = storage; | |
f2152f03 | 928 | |
233d79a5 | 929 | pkgTagFile TagFile(&File, File.Size()); |
e9737c7f DK |
930 | pkgTagSection Section; |
931 | if (_error->PendingError() == true || TagFile.Step(Section) == false) | |
fe0f7911 DK |
932 | return false; |
933 | ||
e9737c7f DK |
934 | std::string data; |
935 | #define APT_INRELEASE(TAG, STORE) \ | |
936 | data = Section.FindS(TAG); \ | |
937 | if (data.empty() == false) \ | |
938 | { \ | |
939 | map_ptrloc const storage = WriteUniqString(data); \ | |
940 | STORE = storage; \ | |
fe0f7911 | 941 | } |
e9737c7f DK |
942 | APT_INRELEASE("Suite", FileI->Archive) |
943 | APT_INRELEASE("Component", FileI->Component) | |
944 | APT_INRELEASE("Version", FileI->Version) | |
945 | APT_INRELEASE("Origin", FileI->Origin) | |
946 | APT_INRELEASE("Codename", FileI->Codename) | |
947 | APT_INRELEASE("Label", FileI->Label) | |
948 | #undef APT_INRELEASE | |
949 | Section.FindFlag("NotAutomatic", FileI->Flags, pkgCache::Flag::NotAutomatic); | |
950 | Section.FindFlag("ButAutomaticUpgrades", FileI->Flags, pkgCache::Flag::ButAutomaticUpgrades); | |
f2152f03 | 951 | |
b0b4efb9 AL |
952 | return !_error->PendingError(); |
953 | } | |
954 | /*}}}*/ | |
b2e465d6 AL |
955 | // ListParser::GetPrio - Convert the priority from a string /*{{{*/ |
956 | // --------------------------------------------------------------------- | |
957 | /* */ | |
958 | unsigned char debListParser::GetPrio(string Str) | |
959 | { | |
960 | unsigned char Out; | |
961 | if (GrabWord(Str,PrioList,Out) == false) | |
962 | Out = pkgCache::State::Extra; | |
963 | ||
964 | return Out; | |
965 | } | |
966 | /*}}}*/ | |
68134bda DK |
967 | #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) |
968 | bool debListParser::SameVersion(unsigned short const Hash, /*{{{*/ | |
969 | pkgCache::VerIterator const &Ver) | |
970 | { | |
971 | if (pkgCacheGenerator::ListParser::SameVersion(Hash, Ver) == false) | |
972 | return false; | |
973 | // status file has no (Download)Size, but all others are fair game | |
974 | // status file is parsed last, so the first version we encounter is | |
975 | // probably also the version we have downloaded | |
976 | unsigned long long const Size = Section.FindULL("Size"); | |
977 | if (Size != 0 && Size != Ver->Size) | |
978 | return false; | |
979 | // available everywhere, but easier to check here than to include in VersionHash | |
980 | unsigned char MultiArch = ParseMultiArch(false); | |
981 | if (MultiArch != Ver->MultiArch) | |
982 | return false; | |
983 | // for all practical proposes (we can check): same version | |
984 | return true; | |
985 | } | |
986 | /*}}}*/ | |
987 | #endif |