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234edfd0 AL |
1 | // -*- mode: cpp; mode: fold -*- |
2 | // Description /*{{{*/ | |
8eb5af51 | 3 | // $Id: apt-extracttemplates.cc,v 1.15 2003/07/26 00:00:11 mdz 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 /*{{{*/ | |
ea542140 DK |
16 | #include<config.h> |
17 | ||
3fc8f685 | 18 | #include <apt-pkg/init.h> |
5cbf1b49 | 19 | #include <apt-pkg/cmndline.h> |
3fc8f685 AL |
20 | #include <apt-pkg/pkgcache.h> |
21 | #include <apt-pkg/configuration.h> | |
22 | #include <apt-pkg/progress.h> | |
23 | #include <apt-pkg/sourcelist.h> | |
24 | #include <apt-pkg/pkgcachegen.h> | |
25 | #include <apt-pkg/version.h> | |
234edfd0 | 26 | #include <apt-pkg/tagfile.h> |
e7f56293 | 27 | #include <apt-pkg/debfile.h> |
234edfd0 AL |
28 | #include <apt-pkg/deblistparser.h> |
29 | #include <apt-pkg/error.h> | |
30 | #include <apt-pkg/strutl.h> | |
4decd43c | 31 | #include <apt-pkg/fileutl.h> |
472ff00e | 32 | #include <apt-pkg/pkgsystem.h> |
ea542140 | 33 | |
234edfd0 AL |
34 | #include <stdio.h> |
35 | #include <string.h> | |
36 | #include <stdlib.h> | |
37 | #include <unistd.h> | |
a00a9b44 DK |
38 | #include <locale.h> |
39 | ||
7e726255 | 40 | #include <fstream> |
234edfd0 | 41 | |
234edfd0 | 42 | #include "apt-extracttemplates.h" |
a00a9b44 DK |
43 | |
44 | #include <apti18n.h> | |
7e726255 | 45 | /*}}}*/ |
234edfd0 | 46 | |
8f312f45 AL |
47 | using namespace std; |
48 | ||
234edfd0 AL |
49 | pkgCache *DebFile::Cache = 0; |
50 | ||
51 | // DebFile::DebFile - Construct the DebFile object /*{{{*/ | |
52 | // --------------------------------------------------------------------- | |
53 | /* */ | |
54 | DebFile::DebFile(const char *debfile) | |
dcaa1185 DK |
55 | : File(debfile, FileFd::ReadOnly), Size(0), Control(NULL), ControlLen(0), |
56 | DepOp(0), PreDepOp(0), Config(0), Template(0), Which(None) | |
3fc8f685 | 57 | { |
3fc8f685 | 58 | } |
234edfd0 AL |
59 | /*}}}*/ |
60 | // DebFile::~DebFile - Destruct the DebFile object /*{{{*/ | |
61 | // --------------------------------------------------------------------- | |
62 | /* */ | |
63 | DebFile::~DebFile() | |
64 | { | |
65 | delete [] Control; | |
66 | delete [] Config; | |
67 | delete [] Template; | |
68 | } | |
69 | /*}}}*/ | |
70 | // DebFile::GetInstalledVer - Find out the installed version of a pkg /*{{{*/ | |
71 | // --------------------------------------------------------------------- | |
72 | /* */ | |
7e726255 | 73 | string DebFile::GetInstalledVer(const string &package) |
234edfd0 | 74 | { |
234edfd0 AL |
75 | pkgCache::PkgIterator Pkg = Cache->FindPkg(package); |
76 | if (Pkg.end() == false) | |
77 | { | |
78 | pkgCache::VerIterator V = Pkg.CurrentVer(); | |
7e726255 | 79 | if (V.end() == false) |
234edfd0 | 80 | { |
7e726255 | 81 | return V.VerStr(); |
234edfd0 AL |
82 | } |
83 | } | |
3fc8f685 | 84 | |
7e726255 | 85 | return string(); |
234edfd0 AL |
86 | } |
87 | /*}}}*/ | |
88 | // DebFile::Go - Start extracting a debian package /*{{{*/ | |
89 | // --------------------------------------------------------------------- | |
90 | /* */ | |
91 | bool DebFile::Go() | |
92 | { | |
e7f56293 GJ |
93 | debDebFile Deb(File); |
94 | ||
95 | return Deb.ExtractTarMember(*this, "control.tar"); | |
234edfd0 AL |
96 | } |
97 | /*}}}*/ | |
98 | // DebFile::DoItem examine element in package and mark /*{{{*/ | |
99 | // --------------------------------------------------------------------- | |
100 | /* */ | |
101 | bool DebFile::DoItem(Item &I, int &Fd) | |
102 | { | |
103 | if (strcmp(I.Name, "control") == 0) | |
104 | { | |
105 | delete [] Control; | |
106 | Control = new char[I.Size+1]; | |
107 | Control[I.Size] = 0; | |
108 | Which = IsControl; | |
109 | ControlLen = I.Size; | |
110 | // make it call the Process method below. this is so evil | |
111 | Fd = -2; | |
112 | } | |
113 | else if (strcmp(I.Name, "config") == 0) | |
114 | { | |
115 | delete [] Config; | |
116 | Config = new char[I.Size+1]; | |
117 | Config[I.Size] = 0; | |
118 | Which = IsConfig; | |
119 | Fd = -2; | |
120 | } | |
121 | else if (strcmp(I.Name, "templates") == 0) | |
122 | { | |
123 | delete [] Template; | |
124 | Template = new char[I.Size+1]; | |
125 | Template[I.Size] = 0; | |
126 | Which = IsTemplate; | |
127 | Fd = -2; | |
128 | } | |
129 | else | |
130 | { | |
7e726255 | 131 | // Ignore it |
234edfd0 AL |
132 | Fd = -1; |
133 | } | |
134 | return true; | |
135 | } | |
136 | /*}}}*/ | |
137 | // DebFile::Process examine element in package and copy /*{{{*/ | |
138 | // --------------------------------------------------------------------- | |
139 | /* */ | |
65512241 | 140 | bool DebFile::Process(Item &/*I*/, const unsigned char *data, |
234edfd0 AL |
141 | unsigned long size, unsigned long pos) |
142 | { | |
143 | switch (Which) | |
144 | { | |
145 | case IsControl: | |
146 | memcpy(Control + pos, data, size); | |
147 | break; | |
148 | case IsConfig: | |
149 | memcpy(Config + pos, data, size); | |
150 | break; | |
151 | case IsTemplate: | |
152 | memcpy(Template + pos, data, size); | |
153 | break; | |
154 | default: /* throw it away */ ; | |
155 | } | |
156 | return true; | |
157 | } | |
158 | /*}}}*/ | |
159 | // DebFile::ParseInfo - Parse control file for dependency info /*{{{*/ | |
160 | // --------------------------------------------------------------------- | |
161 | /* */ | |
162 | bool DebFile::ParseInfo() | |
163 | { | |
164 | if (Control == NULL) return false; | |
7e726255 | 165 | |
234edfd0 AL |
166 | pkgTagSection Section; |
167 | Section.Scan(Control, ControlLen); | |
168 | ||
169 | Package = Section.FindS("Package"); | |
170 | Version = GetInstalledVer(Package); | |
171 | ||
172 | const char *Start, *Stop; | |
173 | if (Section.Find("Depends", Start, Stop) == true) | |
174 | { | |
175 | while (1) | |
176 | { | |
177 | string P, V; | |
178 | unsigned int Op; | |
179 | Start = debListParser::ParseDepends(Start, Stop, P, V, Op); | |
180 | if (Start == 0) return false; | |
181 | if (P == "debconf") | |
182 | { | |
183 | DepVer = V; | |
184 | DepOp = Op; | |
185 | break; | |
186 | } | |
187 | if (Start == Stop) break; | |
188 | } | |
189 | } | |
190 | ||
191 | if (Section.Find("Pre-Depends", Start, Stop) == true) | |
192 | { | |
193 | while (1) | |
194 | { | |
195 | string P, V; | |
196 | unsigned int Op; | |
197 | Start = debListParser::ParseDepends(Start, Stop, P, V, Op); | |
198 | if (Start == 0) return false; | |
199 | if (P == "debconf") | |
200 | { | |
201 | PreDepVer = V; | |
202 | PreDepOp = Op; | |
203 | break; | |
204 | } | |
205 | if (Start == Stop) break; | |
206 | } | |
207 | } | |
208 | ||
209 | return true; | |
210 | } | |
211 | /*}}}*/ | |
212 | // ShowHelp - show a short help text /*{{{*/ | |
213 | // --------------------------------------------------------------------- | |
214 | /* */ | |
c3ccac92 | 215 | static int ShowHelp(void) |
234edfd0 | 216 | { |
9179f697 | 217 | ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION, |
5b28c804 | 218 | COMMON_ARCH,__DATE__,__TIME__); |
234edfd0 | 219 | |
7e726255 AL |
220 | if (_config->FindB("version") == true) |
221 | return 0; | |
5cbf1b49 | 222 | |
7e726255 | 223 | cout << |
234edfd0 AL |
224 | _("Usage: apt-extracttemplates file1 [file2 ...]\n" |
225 | "\n" | |
226 | "apt-extracttemplates is a tool to extract config and template info\n" | |
7e726255 AL |
227 | "from debian packages\n" |
228 | "\n" | |
229 | "Options:\n" | |
230 | " -h This help text\n" | |
231 | " -t Set the temp dir\n" | |
232 | " -c=? Read this configuration file\n" | |
a2884e32 | 233 | " -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"); |
7e726255 | 234 | return 0; |
234edfd0 AL |
235 | } |
236 | /*}}}*/ | |
237 | // WriteFile - write the contents of the passed string to a file /*{{{*/ | |
238 | // --------------------------------------------------------------------- | |
239 | /* */ | |
c3ccac92 | 240 | static string WriteFile(const char *package, const char *prefix, const char *data) |
3fc8f685 AL |
241 | { |
242 | char fn[512]; | |
243 | static int i; | |
8eb5af51 | 244 | |
68e01721 | 245 | std::string tempdir = GetTempDir(); |
8eb5af51 | 246 | snprintf(fn, sizeof(fn), "%s/%s.%s.%u%d", |
68e01721 MV |
247 | _config->Find("APT::ExtractTemplates::TempDir", |
248 | tempdir.c_str()).c_str(), | |
8eb5af51 | 249 | package, prefix, getpid(), i++); |
4decd43c AL |
250 | FileFd f; |
251 | if (data == NULL) | |
252 | data = ""; | |
3fc8f685 | 253 | |
4decd43c | 254 | if (!f.Open(fn, FileFd::WriteTemp, 0600)) |
7e726255 AL |
255 | { |
256 | _error->Errno("ofstream::ofstream",_("Unable to write to %s"),fn); | |
257 | return string(); | |
258 | } | |
259 | ||
4decd43c AL |
260 | f.Write(data, strlen(data)); |
261 | f.Close(); | |
7e726255 | 262 | return fn; |
3fc8f685 | 263 | } |
234edfd0 AL |
264 | /*}}}*/ |
265 | // WriteConfig - write out the config data from a debian package file /*{{{*/ | |
266 | // --------------------------------------------------------------------- | |
267 | /* */ | |
c3ccac92 | 268 | static void WriteConfig(const DebFile &file) |
3fc8f685 | 269 | { |
a5eef4f7 AL |
270 | string templatefile = WriteFile(file.Package.c_str(), "template", file.Template); |
271 | string configscript = WriteFile(file.Package.c_str(), "config", file.Config); | |
3fc8f685 | 272 | |
7e726255 | 273 | if (templatefile.empty() == true || configscript.empty() == true) |
3fc8f685 | 274 | return; |
234edfd0 AL |
275 | cout << file.Package << " " << file.Version << " " |
276 | << templatefile << " " << configscript << endl; | |
234edfd0 AL |
277 | } |
278 | /*}}}*/ | |
279 | // InitCache - initialize the package cache /*{{{*/ | |
280 | // --------------------------------------------------------------------- | |
281 | /* */ | |
c3ccac92 | 282 | static bool Go(CommandLine &CmdL) |
7e726255 | 283 | { |
3fc8f685 | 284 | // Initialize the apt cache |
7e726255 | 285 | MMap *Map = 0; |
3fc8f685 AL |
286 | pkgSourceList List; |
287 | List.ReadMainList(); | |
ea4b220b | 288 | pkgCacheGenerator::MakeStatusCache(List,NULL,&Map,true); |
08945efa AL |
289 | if (Map == 0) |
290 | return false; | |
7e726255 AL |
291 | DebFile::Cache = new pkgCache(Map); |
292 | if (_error->PendingError() == true) | |
293 | return false; | |
5cbf1b49 | 294 | |
234edfd0 | 295 | // Find out what version of debconf is currently installed |
7e726255 AL |
296 | string debconfver = DebFile::GetInstalledVer("debconf"); |
297 | if (debconfver.empty() == true) | |
298 | return _error->Error( _("Cannot get debconf version. Is debconf installed?")); | |
3fc8f685 | 299 | |
234edfd0 | 300 | // Process each package passsed in |
5cbf1b49 | 301 | for (unsigned int I = 0; I != CmdL.FileSize(); I++) |
3fc8f685 | 302 | { |
7e726255 | 303 | // Will pick up the errors later.. |
5cbf1b49 | 304 | DebFile file(CmdL.FileList[I]); |
7e726255 | 305 | if (file.Go() == false) |
08945efa AL |
306 | { |
307 | _error->Error("Prior errors apply to %s",CmdL.FileList[I]); | |
308 | continue; | |
309 | } | |
310 | ||
234edfd0 | 311 | // Does the package have templates? |
3fc8f685 AL |
312 | if (file.Template != 0 && file.ParseInfo() == true) |
313 | { | |
234edfd0 AL |
314 | // Check to make sure debconf dependencies are |
315 | // satisfied | |
f034a64a | 316 | // cout << "Check " << file.DepVer << ',' << debconfver << endl; |
234edfd0 | 317 | if (file.DepVer != "" && |
418349f0 AL |
318 | DebFile::Cache->VS->CheckDep(debconfver.c_str(), |
319 | file.DepOp,file.DepVer.c_str() | |
320 | ) == false) | |
3fc8f685 | 321 | continue; |
234edfd0 | 322 | if (file.PreDepVer != "" && |
418349f0 AL |
323 | DebFile::Cache->VS->CheckDep(debconfver.c_str(), |
324 | file.PreDepOp,file.PreDepVer.c_str() | |
325 | ) == false) | |
3fc8f685 AL |
326 | continue; |
327 | ||
234edfd0 | 328 | WriteConfig(file); |
3fc8f685 AL |
329 | } |
330 | } | |
331 | ||
332 | ||
333 | delete Map; | |
334 | delete DebFile::Cache; | |
7e726255 AL |
335 | |
336 | return !_error->PendingError(); | |
337 | } | |
338 | /*}}}*/ | |
92fcbfc1 | 339 | int main(int argc, const char **argv) /*{{{*/ |
7e726255 AL |
340 | { |
341 | CommandLine::Args Args[] = { | |
342 | {'h',"help","help",0}, | |
343 | {'v',"version","version",0}, | |
344 | {'t',"tempdir","APT::ExtractTemplates::TempDir",CommandLine::HasArg}, | |
345 | {'c',"config-file",0,CommandLine::ConfigFile}, | |
346 | {'o',"option",0,CommandLine::ArbItem}, | |
347 | {0,0,0,0}}; | |
67111687 AL |
348 | |
349 | // Set up gettext support | |
350 | setlocale(LC_ALL,""); | |
351 | textdomain(PACKAGE); | |
352 | ||
7e726255 AL |
353 | // Parse the command line and initialize the package library |
354 | CommandLine CmdL(Args,_config); | |
355 | if (pkgInitConfig(*_config) == false || | |
356 | CmdL.Parse(argc,argv) == false || | |
357 | pkgInitSystem(*_config,_system) == false) | |
358 | { | |
359 | _error->DumpErrors(); | |
360 | return 100; | |
361 | } | |
362 | ||
363 | // See if the help should be shown | |
364 | if (_config->FindB("help") == true || | |
365 | CmdL.FileSize() == 0) | |
366 | return ShowHelp(); | |
367 | ||
368 | Go(CmdL); | |
3fc8f685 | 369 | |
7e726255 AL |
370 | // Print any errors or warnings found during operation |
371 | if (_error->empty() == false) | |
372 | { | |
373 | // This goes to stderr.. | |
374 | bool Errors = _error->PendingError(); | |
375 | _error->DumpErrors(); | |
376 | return Errors == true?100:0; | |
377 | } | |
378 | ||
3fc8f685 AL |
379 | return 0; |
380 | } | |
92fcbfc1 | 381 | /*}}}*/ |