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[apt.git] / apt-private / private-download.cc
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1// Include Files /*{{{*/
2#include <config.h>
3
4#include <apt-pkg/acquire.h>
5#include <apt-pkg/acquire-item.h>
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6#include <apt-pkg/cacheset.h>
7#include <apt-pkg/cmndline.h>
8#include <apt-pkg/clean.h>
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9#include <apt-pkg/configuration.h>
10#include <apt-pkg/error.h>
460601d5 11#include <apt-pkg/fileutl.h>
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12#include <apt-pkg/strutl.h>
13
9055d5e6 14#include <apt-private/private-cachefile.h>
453b82a3 15#include <apt-private/private-download.h>
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16#include <apt-private/private-output.h>
17#include <apt-private/private-utils.h>
2b0660b5 18#include <apt-private/acqprogress.h>
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19
20#include <fstream>
21#include <string>
22#include <vector>
23
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24#include <unistd.h>
25#include <sys/types.h>
26#include <pwd.h>
27#include <fcntl.h>
2c391d85 28#ifdef HAVE_VFS_H
9c81f8de 29#include <sys/vfs.h>
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30#else
31#ifdef HAVE_PARAMS_H
32#include <sys/params.h>
33#endif
34#include <sys/mount.h>
35#endif
9c81f8de 36#include <sys/statvfs.h>
30c8107e 37#include <sys/stat.h>
9c81f8de 38#include <errno.h>
460601d5 39
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40#include <apti18n.h>
41 /*}}}*/
42
43// CheckAuth - check if each download comes form a trusted source /*{{{*/
44bool CheckAuth(pkgAcquire& Fetcher, bool const PromptUser)
45{
9112f777 46 std::vector<std::string> UntrustedList;
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47 for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I < Fetcher.ItemsEnd(); ++I)
48 if (!(*I)->IsTrusted())
9112f777 49 UntrustedList.push_back((*I)->ShortDesc());
866893a6 50
9112f777 51 if (UntrustedList.empty())
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52 return true;
53
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54 return AuthPrompt(UntrustedList, PromptUser);
55}
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56 /*}}}*/
57bool AuthPrompt(std::vector<std::string> const &UntrustedList, bool const PromptUser)/*{{{*/
a3f1d60c 58{
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59 ShowList(c2out,_("WARNING: The following packages cannot be authenticated!"), UntrustedList,
60 [](std::string const&) { return true; },
61 [](std::string const&str) { return str; },
62 [](std::string const&) { return ""; });
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63
64 if (_config->FindB("APT::Get::AllowUnauthenticated",false) == true)
65 {
66 c2out << _("Authentication warning overridden.\n");
67 return true;
68 }
69
70 if (PromptUser == false)
71 return _error->Error(_("Some packages could not be authenticated"));
72
73 if (_config->FindI("quiet",0) < 2
74 && _config->FindB("APT::Get::Assume-Yes",false) == false)
75 {
fd789740 76 if (!YnPrompt(_("Install these packages without verification?"), false))
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77 return _error->Error(_("Some packages could not be authenticated"));
78
79 return true;
80 }
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81 else if (_config->FindB("APT::Get::Force-Yes",false) == true) {
82 _error->Warning(_("--force-yes is deprecated, use one of the options starting with --allow instead."));
866893a6 83 return true;
b381a482 84 }
866893a6 85
b381a482 86 return _error->Error(_("There were unauthenticated packages and -y was used without --allow-unauthenticated"));
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87}
88 /*}}}*/
89bool AcquireRun(pkgAcquire &Fetcher, int const PulseInterval, bool * const Failure, bool * const TransientNetworkFailure)/*{{{*/
90{
91 pkgAcquire::RunResult res;
92 if(PulseInterval > 0)
93 res = Fetcher.Run(PulseInterval);
94 else
95 res = Fetcher.Run();
96
97 if (res == pkgAcquire::Failed)
98 return false;
99
100 for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin();
101 I != Fetcher.ItemsEnd(); ++I)
102 {
103
104 if ((*I)->Status == pkgAcquire::Item::StatDone &&
105 (*I)->Complete == true)
106 continue;
107
108 if (TransientNetworkFailure != NULL && (*I)->Status == pkgAcquire::Item::StatIdle)
109 {
110 *TransientNetworkFailure = true;
111 continue;
112 }
113
114 ::URI uri((*I)->DescURI());
115 uri.User.clear();
116 uri.Password.clear();
117 std::string descUri = std::string(uri);
3f760434 118 _error->Error(_("Failed to fetch %s %s"), descUri.c_str(),
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119 (*I)->ErrorText.c_str());
120
121 if (Failure != NULL)
122 *Failure = true;
123 }
124
125 return true;
126}
127 /*}}}*/
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128bool CheckFreeSpaceBeforeDownload(std::string const &Dir, unsigned long long FetchBytes)/*{{{*/
129{
130 uint32_t const RAMFS_MAGIC = 0x858458f6;
131 /* Check for enough free space, but only if we are actually going to
132 download */
133 if (_config->FindB("APT::Get::Print-URIs", false) == true ||
134 _config->FindB("APT::Get::Download", true) == false)
135 return true;
136
137 struct statvfs Buf;
138 if (statvfs(Dir.c_str(),&Buf) != 0) {
139 if (errno == EOVERFLOW)
140 return _error->WarningE("statvfs",_("Couldn't determine free space in %s"),
141 Dir.c_str());
142 else
143 return _error->Errno("statvfs",_("Couldn't determine free space in %s"),
144 Dir.c_str());
145 }
146 else
147 {
148 unsigned long long const FreeBlocks = _config->Find("APT::Sandbox::User").empty() ? Buf.f_bfree : Buf.f_bavail;
149 if (FreeBlocks < (FetchBytes / Buf.f_bsize))
150 {
151 struct statfs Stat;
152 if (statfs(Dir.c_str(),&Stat) != 0
f9de4208 153#ifdef HAVE_STRUCT_STATFS_F_TYPE
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154 || Stat.f_type != RAMFS_MAGIC
155#endif
156 )
157 return _error->Error(_("You don't have enough free space in %s."),
158 Dir.c_str());
159 }
160 }
161 return true;
162}
163 /*}}}*/
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164
165aptAcquireWithTextStatus::aptAcquireWithTextStatus() : pkgAcquire::pkgAcquire(),
166 Stat(std::cout, ScreenWidth, _config->FindI("quiet",0))
167{
168 SetLog(&Stat);
169}
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170
171// DoDownload - download a binary /*{{{*/
172bool DoDownload(CommandLine &CmdL)
173{
174 CacheFile Cache;
175 if (Cache.ReadOnlyOpen() == false)
176 return false;
177
178 APT::CacheSetHelper helper;
179 APT::VersionSet verset = APT::VersionSet::FromCommandLine(Cache,
180 CmdL.FileList + 1, APT::CacheSetHelper::CANDIDATE, helper);
181
182 if (verset.empty() == true)
183 return false;
184
185 pkgRecords Recs(Cache);
186 pkgSourceList *SrcList = Cache.GetSourceList();
187
188 // reuse the usual acquire methods for deb files, but don't drop them into
189 // the usual directories - keep everything in the current directory
190 aptAcquireWithTextStatus Fetcher;
191 std::vector<std::string> storefile(verset.size());
192 std::string const cwd = SafeGetCWD();
193 _config->Set("Dir::Cache::Archives", cwd);
194 int i = 0;
195 for (APT::VersionSet::const_iterator Ver = verset.begin();
196 Ver != verset.end(); ++Ver, ++i)
197 {
198 pkgAcquire::Item *I = new pkgAcqArchive(&Fetcher, SrcList, &Recs, *Ver, storefile[i]);
199 if (storefile[i].empty())
200 continue;
201 std::string const filename = cwd + flNotDir(storefile[i]);
202 storefile[i].assign(filename);
203 I->DestFile.assign(filename);
204 }
205
206 // Just print out the uris and exit if the --print-uris flag was used
207 if (_config->FindB("APT::Get::Print-URIs") == true)
208 {
209 pkgAcquire::UriIterator I = Fetcher.UriBegin();
210 for (; I != Fetcher.UriEnd(); ++I)
211 std::cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
212 I->Owner->FileSize << ' ' << I->Owner->HashSum() << std::endl;
213 return true;
214 }
215
216 if (_error->PendingError() == true || CheckAuth(Fetcher, false) == false)
217 return false;
218
219 bool Failed = false;
220 if (AcquireRun(Fetcher, 0, &Failed, NULL) == false)
221 return false;
222
223 // copy files in local sources to the current directory
224 for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); ++I)
225 {
226 std::string const filename = cwd + flNotDir((*I)->DestFile);
227 if ((*I)->Local == true &&
228 filename != (*I)->DestFile &&
229 (*I)->Status == pkgAcquire::Item::StatDone)
230 {
231 std::ifstream src((*I)->DestFile.c_str(), std::ios::binary);
232 std::ofstream dst(filename.c_str(), std::ios::binary);
233 dst << src.rdbuf();
30c8107e 234 chmod(filename.c_str(), 0644);
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235 }
236 }
237 return Failed == false;
238}
239 /*}}}*/
240// DoChangelog - Get changelog from the command line /*{{{*/
241bool DoChangelog(CommandLine &CmdL)
242{
243 CacheFile Cache;
244 if (Cache.ReadOnlyOpen() == false)
245 return false;
246
247 APT::CacheSetHelper helper;
248 APT::VersionList verset = APT::VersionList::FromCommandLine(Cache,
249 CmdL.FileList + 1, APT::CacheSetHelper::CANDIDATE, helper);
250 if (verset.empty() == true)
251 return false;
252
253 bool const downOnly = _config->FindB("APT::Get::Download-Only", false);
254 bool const printOnly = _config->FindB("APT::Get::Print-URIs", false);
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255 if (printOnly)
256 _config->CndSet("Acquire::Changelogs::AlwaysOnline", true);
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257
258 aptAcquireWithTextStatus Fetcher;
259 for (APT::VersionList::const_iterator Ver = verset.begin();
260 Ver != verset.end();
261 ++Ver)
262 {
263 if (printOnly)
264 new pkgAcqChangelog(&Fetcher, Ver, "/dev/null");
265 else if (downOnly)
266 new pkgAcqChangelog(&Fetcher, Ver, ".");
267 else
268 new pkgAcqChangelog(&Fetcher, Ver);
269 }
270
271 if (printOnly == false)
272 {
273 bool Failed = false;
274 if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)
275 return false;
276 }
277
278 if (downOnly == false || printOnly == true)
279 {
280 bool Failed = false;
281 for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); ++I)
282 {
283 if (printOnly)
284 {
285 if ((*I)->ErrorText.empty() == false)
286 {
287 Failed = true;
288 _error->Error("%s", (*I)->ErrorText.c_str());
289 }
290 else
291 std::cout << '\'' << (*I)->DescURI() << "' " << flNotDir((*I)->DestFile) << std::endl;
292 }
293 else
294 DisplayFileInPager((*I)->DestFile);
295 }
296 return Failed == false;
297 }
298
299 return true;
300}
301 /*}}}*/
302
303// DoClean - Remove download archives /*{{{*/
304bool DoClean(CommandLine &)
305{
306 std::string const archivedir = _config->FindDir("Dir::Cache::archives");
307 std::string const listsdir = _config->FindDir("Dir::state::lists");
308
309 if (_config->FindB("APT::Get::Simulate") == true)
310 {
311 std::string const pkgcache = _config->FindFile("Dir::cache::pkgcache");
312 std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
313 std::cout << "Del " << archivedir << "* " << archivedir << "partial/*"<< std::endl
314 << "Del " << listsdir << "partial/*" << std::endl
315 << "Del " << pkgcache << " " << srcpkgcache << std::endl;
316 return true;
317 }
318
319 pkgAcquire Fetcher;
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320 if (archivedir.empty() == false && FileExists(archivedir) == true &&
321 Fetcher.GetLock(archivedir) == true)
dffc17ba 322 {
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323 Fetcher.Clean(archivedir);
324 Fetcher.Clean(archivedir + "partial/");
325 }
9055d5e6 326
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327 if (listsdir.empty() == false && FileExists(listsdir) == true &&
328 Fetcher.GetLock(listsdir) == true)
dffc17ba 329 {
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330 Fetcher.Clean(listsdir + "partial/");
331 }
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332
333 pkgCacheFile::RemoveCaches();
334
335 return true;
336}
337 /*}}}*/
338// DoAutoClean - Smartly remove downloaded archives /*{{{*/
339// ---------------------------------------------------------------------
340/* This is similar to clean but it only purges things that cannot be
341 downloaded, that is old versions of cached packages. */
342 class LogCleaner : public pkgArchiveCleaner
343{
344 protected:
345 virtual void Erase(const char *File, std::string Pkg, std::string Ver,struct stat &St) APT_OVERRIDE
346 {
347 c1out << "Del " << Pkg << " " << Ver << " [" << SizeToStr(St.st_size) << "B]" << std::endl;
348
349 if (_config->FindB("APT::Get::Simulate") == false)
ce1f3a2c 350 RemoveFile("Cleaner::Erase", File);
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351 };
352};
353bool DoAutoClean(CommandLine &)
354{
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355 std::string const archivedir = _config->FindDir("Dir::Cache::Archives");
356 if (FileExists(archivedir) == false)
357 return true;
358
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359 // Lock the archive directory
360 FileFd Lock;
361 if (_config->FindB("Debug::NoLocking",false) == false)
362 {
dffc17ba 363 int lock_fd = GetLock(flCombine(archivedir, "lock"));
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364 if (lock_fd < 0)
365 return _error->Error(_("Unable to lock the download directory"));
366 Lock.Fd(lock_fd);
367 }
368
369 CacheFile Cache;
370 if (Cache.Open() == false)
371 return false;
372
373 LogCleaner Cleaner;
374
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375 return Cleaner.Go(archivedir, *Cache) &&
376 Cleaner.Go(flCombine(archivedir, "partial/"), *Cache);
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377}
378 /*}}}*/