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1 | // -*- mode: cpp; mode: fold -*- |
2 | // Description /*{{{*/ | |
08945efa | 3 | // $Id: apt-extracttemplates.cc,v 1.11 2002/09/21 21:29:13 jgg Exp $ |
234edfd0 AL |
4 | /* ###################################################################### |
5 | ||
6 | APT Extract Templates - Program to extract debconf config and template | |
7 | files | |
3fc8f685 | 8 | |
234edfd0 AL |
9 | This is a simple program to extract config and template information |
10 | from Debian packages. It can be used to speed up the preconfiguration | |
11 | process for debconf-enabled packages | |
12 | ||
13 | ##################################################################### */ | |
14 | /*}}}*/ | |
15 | // Include Files /*{{{*/ | |
3fc8f685 | 16 | #include <apt-pkg/init.h> |
5cbf1b49 | 17 | #include <apt-pkg/cmndline.h> |
3fc8f685 AL |
18 | #include <apt-pkg/pkgcache.h> |
19 | #include <apt-pkg/configuration.h> | |
20 | #include <apt-pkg/progress.h> | |
21 | #include <apt-pkg/sourcelist.h> | |
22 | #include <apt-pkg/pkgcachegen.h> | |
23 | #include <apt-pkg/version.h> | |
234edfd0 AL |
24 | #include <apt-pkg/tagfile.h> |
25 | #include <apt-pkg/extracttar.h> | |
26 | #include <apt-pkg/arfile.h> | |
27 | #include <apt-pkg/deblistparser.h> | |
28 | #include <apt-pkg/error.h> | |
29 | #include <apt-pkg/strutl.h> | |
4decd43c | 30 | #include <apt-pkg/fileutl.h> |
3fc8f685 | 31 | |
234edfd0 AL |
32 | #include <stdio.h> |
33 | #include <string.h> | |
34 | #include <stdlib.h> | |
35 | #include <unistd.h> | |
7e726255 | 36 | #include <fstream> |
234edfd0 | 37 | |
233c2b66 | 38 | #include <locale.h> |
234edfd0 AL |
39 | #include <config.h> |
40 | #include <apti18n.h> | |
41 | #include "apt-extracttemplates.h" | |
7e726255 | 42 | /*}}}*/ |
234edfd0 | 43 | |
4decd43c | 44 | #define TMPDIR "/tmp" |
3fc8f685 | 45 | |
234edfd0 AL |
46 | pkgCache *DebFile::Cache = 0; |
47 | ||
48 | // DebFile::DebFile - Construct the DebFile object /*{{{*/ | |
49 | // --------------------------------------------------------------------- | |
50 | /* */ | |
51 | DebFile::DebFile(const char *debfile) | |
7e726255 AL |
52 | : File(debfile, FileFd::ReadOnly), Control(0), DepOp(0), |
53 | PreDepOp(0), Config(0), Template(0), Which(None) | |
3fc8f685 | 54 | { |
3fc8f685 | 55 | } |
234edfd0 AL |
56 | /*}}}*/ |
57 | // DebFile::~DebFile - Destruct the DebFile object /*{{{*/ | |
58 | // --------------------------------------------------------------------- | |
59 | /* */ | |
60 | DebFile::~DebFile() | |
61 | { | |
62 | delete [] Control; | |
63 | delete [] Config; | |
64 | delete [] Template; | |
65 | } | |
66 | /*}}}*/ | |
67 | // DebFile::GetInstalledVer - Find out the installed version of a pkg /*{{{*/ | |
68 | // --------------------------------------------------------------------- | |
69 | /* */ | |
7e726255 | 70 | string DebFile::GetInstalledVer(const string &package) |
234edfd0 | 71 | { |
234edfd0 AL |
72 | pkgCache::PkgIterator Pkg = Cache->FindPkg(package); |
73 | if (Pkg.end() == false) | |
74 | { | |
75 | pkgCache::VerIterator V = Pkg.CurrentVer(); | |
7e726255 | 76 | if (V.end() == false) |
234edfd0 | 77 | { |
7e726255 | 78 | return V.VerStr(); |
234edfd0 AL |
79 | } |
80 | } | |
3fc8f685 | 81 | |
7e726255 | 82 | return string(); |
234edfd0 AL |
83 | } |
84 | /*}}}*/ | |
85 | // DebFile::Go - Start extracting a debian package /*{{{*/ | |
86 | // --------------------------------------------------------------------- | |
87 | /* */ | |
88 | bool DebFile::Go() | |
89 | { | |
90 | ARArchive AR(File); | |
7e726255 AL |
91 | if (_error->PendingError() == true) |
92 | return false; | |
93 | ||
234edfd0 AL |
94 | const ARArchive::Member *Member = AR.FindMember("control.tar.gz"); |
95 | if (Member == 0) | |
7e726255 | 96 | return _error->Error(_("%s not a valid DEB package."),File.Name().c_str()); |
234edfd0 AL |
97 | |
98 | if (File.Seek(Member->Start) == false) | |
234edfd0 | 99 | return false; |
234edfd0 AL |
100 | ExtractTar Tar(File, Member->Size); |
101 | return Tar.Go(*this); | |
102 | } | |
103 | /*}}}*/ | |
104 | // DebFile::DoItem examine element in package and mark /*{{{*/ | |
105 | // --------------------------------------------------------------------- | |
106 | /* */ | |
107 | bool DebFile::DoItem(Item &I, int &Fd) | |
108 | { | |
109 | if (strcmp(I.Name, "control") == 0) | |
110 | { | |
111 | delete [] Control; | |
112 | Control = new char[I.Size+1]; | |
113 | Control[I.Size] = 0; | |
114 | Which = IsControl; | |
115 | ControlLen = I.Size; | |
116 | // make it call the Process method below. this is so evil | |
117 | Fd = -2; | |
118 | } | |
119 | else if (strcmp(I.Name, "config") == 0) | |
120 | { | |
121 | delete [] Config; | |
122 | Config = new char[I.Size+1]; | |
123 | Config[I.Size] = 0; | |
124 | Which = IsConfig; | |
125 | Fd = -2; | |
126 | } | |
127 | else if (strcmp(I.Name, "templates") == 0) | |
128 | { | |
129 | delete [] Template; | |
130 | Template = new char[I.Size+1]; | |
131 | Template[I.Size] = 0; | |
132 | Which = IsTemplate; | |
133 | Fd = -2; | |
134 | } | |
135 | else | |
136 | { | |
7e726255 | 137 | // Ignore it |
234edfd0 AL |
138 | Fd = -1; |
139 | } | |
140 | return true; | |
141 | } | |
142 | /*}}}*/ | |
143 | // DebFile::Process examine element in package and copy /*{{{*/ | |
144 | // --------------------------------------------------------------------- | |
145 | /* */ | |
146 | bool DebFile::Process(Item &I, const unsigned char *data, | |
147 | unsigned long size, unsigned long pos) | |
148 | { | |
149 | switch (Which) | |
150 | { | |
151 | case IsControl: | |
152 | memcpy(Control + pos, data, size); | |
153 | break; | |
154 | case IsConfig: | |
155 | memcpy(Config + pos, data, size); | |
156 | break; | |
157 | case IsTemplate: | |
158 | memcpy(Template + pos, data, size); | |
159 | break; | |
160 | default: /* throw it away */ ; | |
161 | } | |
162 | return true; | |
163 | } | |
164 | /*}}}*/ | |
165 | // DebFile::ParseInfo - Parse control file for dependency info /*{{{*/ | |
166 | // --------------------------------------------------------------------- | |
167 | /* */ | |
168 | bool DebFile::ParseInfo() | |
169 | { | |
170 | if (Control == NULL) return false; | |
7e726255 | 171 | |
234edfd0 AL |
172 | pkgTagSection Section; |
173 | Section.Scan(Control, ControlLen); | |
174 | ||
175 | Package = Section.FindS("Package"); | |
176 | Version = GetInstalledVer(Package); | |
177 | ||
178 | const char *Start, *Stop; | |
179 | if (Section.Find("Depends", Start, Stop) == true) | |
180 | { | |
181 | while (1) | |
182 | { | |
183 | string P, V; | |
184 | unsigned int Op; | |
185 | Start = debListParser::ParseDepends(Start, Stop, P, V, Op); | |
186 | if (Start == 0) return false; | |
187 | if (P == "debconf") | |
188 | { | |
189 | DepVer = V; | |
190 | DepOp = Op; | |
191 | break; | |
192 | } | |
193 | if (Start == Stop) break; | |
194 | } | |
195 | } | |
196 | ||
197 | if (Section.Find("Pre-Depends", Start, Stop) == true) | |
198 | { | |
199 | while (1) | |
200 | { | |
201 | string P, V; | |
202 | unsigned int Op; | |
203 | Start = debListParser::ParseDepends(Start, Stop, P, V, Op); | |
204 | if (Start == 0) return false; | |
205 | if (P == "debconf") | |
206 | { | |
207 | PreDepVer = V; | |
208 | PreDepOp = Op; | |
209 | break; | |
210 | } | |
211 | if (Start == Stop) break; | |
212 | } | |
213 | } | |
214 | ||
215 | return true; | |
216 | } | |
217 | /*}}}*/ | |
218 | // ShowHelp - show a short help text /*{{{*/ | |
219 | // --------------------------------------------------------------------- | |
220 | /* */ | |
7e726255 | 221 | int ShowHelp(void) |
234edfd0 AL |
222 | { |
223 | ioprintf(cout,_("%s %s for %s %s compiled on %s %s\n"),PACKAGE,VERSION, | |
224 | COMMON_OS,COMMON_CPU,__DATE__,__TIME__); | |
225 | ||
7e726255 AL |
226 | if (_config->FindB("version") == true) |
227 | return 0; | |
5cbf1b49 | 228 | |
7e726255 | 229 | cout << |
234edfd0 AL |
230 | _("Usage: apt-extracttemplates file1 [file2 ...]\n" |
231 | "\n" | |
232 | "apt-extracttemplates is a tool to extract config and template info\n" | |
7e726255 AL |
233 | "from debian packages\n" |
234 | "\n" | |
235 | "Options:\n" | |
236 | " -h This help text\n" | |
237 | " -t Set the temp dir\n" | |
238 | " -c=? Read this configuration file\n" | |
239 | " -o=? Set an arbitary configuration option, eg -o dir::cache=/tmp\n"); | |
240 | return 0; | |
234edfd0 AL |
241 | } |
242 | /*}}}*/ | |
243 | // WriteFile - write the contents of the passed string to a file /*{{{*/ | |
244 | // --------------------------------------------------------------------- | |
245 | /* */ | |
7e726255 | 246 | string WriteFile(const char *prefix, const char *data) |
3fc8f685 AL |
247 | { |
248 | char fn[512]; | |
249 | static int i; | |
7512b6da | 250 | snprintf(fn, sizeof(fn), "%s/%s.%u%d", _config->Find("APT::ExtractTemplates::TempDir", TMPDIR).c_str(), prefix, getpid(), i++); |
4decd43c AL |
251 | FileFd f; |
252 | if (data == NULL) | |
253 | data = ""; | |
3fc8f685 | 254 | |
4decd43c | 255 | if (!f.Open(fn, FileFd::WriteTemp, 0600)) |
7e726255 AL |
256 | { |
257 | _error->Errno("ofstream::ofstream",_("Unable to write to %s"),fn); | |
258 | return string(); | |
259 | } | |
260 | ||
4decd43c AL |
261 | f.Write(data, strlen(data)); |
262 | f.Close(); | |
7e726255 | 263 | return fn; |
3fc8f685 | 264 | } |
234edfd0 AL |
265 | /*}}}*/ |
266 | // WriteConfig - write out the config data from a debian package file /*{{{*/ | |
267 | // --------------------------------------------------------------------- | |
268 | /* */ | |
269 | void WriteConfig(const DebFile &file) | |
3fc8f685 | 270 | { |
7e726255 AL |
271 | string templatefile = WriteFile("template", file.Template); |
272 | string configscript = WriteFile("config", file.Config); | |
3fc8f685 | 273 | |
7e726255 | 274 | if (templatefile.empty() == true || configscript.empty() == true) |
3fc8f685 | 275 | return; |
234edfd0 AL |
276 | cout << file.Package << " " << file.Version << " " |
277 | << templatefile << " " << configscript << endl; | |
234edfd0 AL |
278 | } |
279 | /*}}}*/ | |
280 | // InitCache - initialize the package cache /*{{{*/ | |
281 | // --------------------------------------------------------------------- | |
282 | /* */ | |
7e726255 AL |
283 | bool Go(CommandLine &CmdL) |
284 | { | |
3fc8f685 | 285 | // Initialize the apt cache |
7e726255 | 286 | MMap *Map = 0; |
3fc8f685 AL |
287 | pkgSourceList List; |
288 | List.ReadMainList(); | |
289 | OpProgress Prog; | |
290 | pkgMakeStatusCache(List,Prog,&Map,true); | |
08945efa AL |
291 | if (Map == 0) |
292 | return false; | |
7e726255 AL |
293 | DebFile::Cache = new pkgCache(Map); |
294 | if (_error->PendingError() == true) | |
295 | return false; | |
5cbf1b49 | 296 | |
234edfd0 | 297 | // Find out what version of debconf is currently installed |
7e726255 AL |
298 | string debconfver = DebFile::GetInstalledVer("debconf"); |
299 | if (debconfver.empty() == true) | |
300 | return _error->Error( _("Cannot get debconf version. Is debconf installed?")); | |
3fc8f685 | 301 | |
234edfd0 | 302 | // Process each package passsed in |
5cbf1b49 | 303 | for (unsigned int I = 0; I != CmdL.FileSize(); I++) |
3fc8f685 | 304 | { |
7e726255 | 305 | // Will pick up the errors later.. |
5cbf1b49 | 306 | DebFile file(CmdL.FileList[I]); |
7e726255 | 307 | if (file.Go() == false) |
08945efa AL |
308 | { |
309 | _error->Error("Prior errors apply to %s",CmdL.FileList[I]); | |
310 | continue; | |
311 | } | |
312 | ||
234edfd0 | 313 | // Does the package have templates? |
3fc8f685 AL |
314 | if (file.Template != 0 && file.ParseInfo() == true) |
315 | { | |
234edfd0 AL |
316 | // Check to make sure debconf dependencies are |
317 | // satisfied | |
f034a64a | 318 | // cout << "Check " << file.DepVer << ',' << debconfver << endl; |
234edfd0 | 319 | if (file.DepVer != "" && |
418349f0 AL |
320 | DebFile::Cache->VS->CheckDep(debconfver.c_str(), |
321 | file.DepOp,file.DepVer.c_str() | |
322 | ) == false) | |
3fc8f685 | 323 | continue; |
234edfd0 | 324 | if (file.PreDepVer != "" && |
418349f0 AL |
325 | DebFile::Cache->VS->CheckDep(debconfver.c_str(), |
326 | file.PreDepOp,file.PreDepVer.c_str() | |
327 | ) == false) | |
3fc8f685 AL |
328 | continue; |
329 | ||
234edfd0 | 330 | WriteConfig(file); |
3fc8f685 AL |
331 | } |
332 | } | |
333 | ||
334 | ||
335 | delete Map; | |
336 | delete DebFile::Cache; | |
7e726255 AL |
337 | |
338 | return !_error->PendingError(); | |
339 | } | |
340 | /*}}}*/ | |
341 | ||
342 | int main(int argc, const char **argv) | |
343 | { | |
344 | CommandLine::Args Args[] = { | |
345 | {'h',"help","help",0}, | |
346 | {'v',"version","version",0}, | |
347 | {'t',"tempdir","APT::ExtractTemplates::TempDir",CommandLine::HasArg}, | |
348 | {'c',"config-file",0,CommandLine::ConfigFile}, | |
349 | {'o',"option",0,CommandLine::ArbItem}, | |
350 | {0,0,0,0}}; | |
67111687 AL |
351 | |
352 | // Set up gettext support | |
353 | setlocale(LC_ALL,""); | |
354 | textdomain(PACKAGE); | |
355 | ||
7e726255 AL |
356 | // Parse the command line and initialize the package library |
357 | CommandLine CmdL(Args,_config); | |
358 | if (pkgInitConfig(*_config) == false || | |
359 | CmdL.Parse(argc,argv) == false || | |
360 | pkgInitSystem(*_config,_system) == false) | |
361 | { | |
362 | _error->DumpErrors(); | |
363 | return 100; | |
364 | } | |
365 | ||
366 | // See if the help should be shown | |
367 | if (_config->FindB("help") == true || | |
368 | CmdL.FileSize() == 0) | |
369 | return ShowHelp(); | |
370 | ||
371 | Go(CmdL); | |
3fc8f685 | 372 | |
7e726255 AL |
373 | // Print any errors or warnings found during operation |
374 | if (_error->empty() == false) | |
375 | { | |
376 | // This goes to stderr.. | |
377 | bool Errors = _error->PendingError(); | |
378 | _error->DumpErrors(); | |
379 | return Errors == true?100:0; | |
380 | } | |
381 | ||
3fc8f685 AL |
382 | return 0; |
383 | } |