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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 | 20 | #include <apt-pkg/pkgcache.h> |
453b82a3 | 21 | #include <apt-pkg/cacheiterators.h> |
3fc8f685 | 22 | #include <apt-pkg/configuration.h> |
3fc8f685 AL |
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> |
453b82a3 DK |
33 | #include <apt-pkg/dirstream.h> |
34 | #include <apt-pkg/mmap.h> | |
ea542140 | 35 | |
ad7e0941 DK |
36 | #include <apt-private/private-cmndline.h> |
37 | ||
453b82a3 | 38 | #include <iostream> |
234edfd0 AL |
39 | #include <stdio.h> |
40 | #include <string.h> | |
234edfd0 | 41 | #include <unistd.h> |
8d50b63f | 42 | #include <stdlib.h> |
234edfd0 | 43 | |
234edfd0 | 44 | #include "apt-extracttemplates.h" |
a00a9b44 DK |
45 | |
46 | #include <apti18n.h> | |
7e726255 | 47 | /*}}}*/ |
234edfd0 | 48 | |
8f312f45 AL |
49 | using namespace std; |
50 | ||
234edfd0 AL |
51 | pkgCache *DebFile::Cache = 0; |
52 | ||
53 | // DebFile::DebFile - Construct the DebFile object /*{{{*/ | |
54 | // --------------------------------------------------------------------- | |
55 | /* */ | |
56 | DebFile::DebFile(const char *debfile) | |
387fb4ae | 57 | : File(debfile, FileFd::ReadOnly), Control(NULL), ControlLen(0), |
dcaa1185 | 58 | DepOp(0), PreDepOp(0), Config(0), Template(0), Which(None) |
3fc8f685 | 59 | { |
3fc8f685 | 60 | } |
234edfd0 AL |
61 | /*}}}*/ |
62 | // DebFile::~DebFile - Destruct the DebFile object /*{{{*/ | |
63 | // --------------------------------------------------------------------- | |
64 | /* */ | |
65 | DebFile::~DebFile() | |
66 | { | |
67 | delete [] Control; | |
68 | delete [] Config; | |
69 | delete [] Template; | |
70 | } | |
71 | /*}}}*/ | |
72 | // DebFile::GetInstalledVer - Find out the installed version of a pkg /*{{{*/ | |
73 | // --------------------------------------------------------------------- | |
74 | /* */ | |
7e726255 | 75 | string DebFile::GetInstalledVer(const string &package) |
234edfd0 | 76 | { |
234edfd0 AL |
77 | pkgCache::PkgIterator Pkg = Cache->FindPkg(package); |
78 | if (Pkg.end() == false) | |
79 | { | |
80 | pkgCache::VerIterator V = Pkg.CurrentVer(); | |
7e726255 | 81 | if (V.end() == false) |
234edfd0 | 82 | { |
7e726255 | 83 | return V.VerStr(); |
234edfd0 AL |
84 | } |
85 | } | |
3fc8f685 | 86 | |
7e726255 | 87 | return string(); |
234edfd0 AL |
88 | } |
89 | /*}}}*/ | |
90 | // DebFile::Go - Start extracting a debian package /*{{{*/ | |
91 | // --------------------------------------------------------------------- | |
92 | /* */ | |
93 | bool DebFile::Go() | |
94 | { | |
e7f56293 GJ |
95 | debDebFile Deb(File); |
96 | ||
97 | return Deb.ExtractTarMember(*this, "control.tar"); | |
234edfd0 AL |
98 | } |
99 | /*}}}*/ | |
100 | // DebFile::DoItem examine element in package and mark /*{{{*/ | |
101 | // --------------------------------------------------------------------- | |
102 | /* */ | |
103 | bool DebFile::DoItem(Item &I, int &Fd) | |
104 | { | |
105 | if (strcmp(I.Name, "control") == 0) | |
106 | { | |
107 | delete [] Control; | |
8710a36a DK |
108 | Control = new char[I.Size+3]; |
109 | Control[I.Size] = '\n'; | |
110 | Control[I.Size + 1] = '\n'; | |
111 | Control[I.Size + 2] = '\0'; | |
234edfd0 | 112 | Which = IsControl; |
8710a36a | 113 | ControlLen = I.Size + 3; |
234edfd0 AL |
114 | // make it call the Process method below. this is so evil |
115 | Fd = -2; | |
116 | } | |
117 | else if (strcmp(I.Name, "config") == 0) | |
118 | { | |
119 | delete [] Config; | |
120 | Config = new char[I.Size+1]; | |
121 | Config[I.Size] = 0; | |
122 | Which = IsConfig; | |
123 | Fd = -2; | |
124 | } | |
125 | else if (strcmp(I.Name, "templates") == 0) | |
126 | { | |
127 | delete [] Template; | |
128 | Template = new char[I.Size+1]; | |
129 | Template[I.Size] = 0; | |
130 | Which = IsTemplate; | |
131 | Fd = -2; | |
132 | } | |
133 | else | |
134 | { | |
7e726255 | 135 | // Ignore it |
234edfd0 AL |
136 | Fd = -1; |
137 | } | |
138 | return true; | |
139 | } | |
140 | /*}}}*/ | |
141 | // DebFile::Process examine element in package and copy /*{{{*/ | |
142 | // --------------------------------------------------------------------- | |
143 | /* */ | |
65512241 | 144 | bool DebFile::Process(Item &/*I*/, const unsigned char *data, |
3621b1c7 | 145 | unsigned long long size, unsigned long long pos) |
234edfd0 AL |
146 | { |
147 | switch (Which) | |
148 | { | |
149 | case IsControl: | |
150 | memcpy(Control + pos, data, size); | |
151 | break; | |
152 | case IsConfig: | |
153 | memcpy(Config + pos, data, size); | |
154 | break; | |
155 | case IsTemplate: | |
156 | memcpy(Template + pos, data, size); | |
157 | break; | |
158 | default: /* throw it away */ ; | |
159 | } | |
160 | return true; | |
161 | } | |
162 | /*}}}*/ | |
163 | // DebFile::ParseInfo - Parse control file for dependency info /*{{{*/ | |
164 | // --------------------------------------------------------------------- | |
165 | /* */ | |
166 | bool DebFile::ParseInfo() | |
167 | { | |
168 | if (Control == NULL) return false; | |
8710a36a | 169 | |
234edfd0 | 170 | pkgTagSection Section; |
8710a36a DK |
171 | if (Section.Scan(Control, ControlLen) == false) |
172 | return false; | |
234edfd0 AL |
173 | |
174 | Package = Section.FindS("Package"); | |
175 | Version = GetInstalledVer(Package); | |
176 | ||
177 | const char *Start, *Stop; | |
178 | if (Section.Find("Depends", Start, Stop) == true) | |
179 | { | |
180 | while (1) | |
181 | { | |
182 | string P, V; | |
183 | unsigned int Op; | |
184 | Start = debListParser::ParseDepends(Start, Stop, P, V, Op); | |
185 | if (Start == 0) return false; | |
186 | if (P == "debconf") | |
187 | { | |
188 | DepVer = V; | |
189 | DepOp = Op; | |
190 | break; | |
191 | } | |
192 | if (Start == Stop) break; | |
193 | } | |
194 | } | |
195 | ||
196 | if (Section.Find("Pre-Depends", Start, Stop) == true) | |
197 | { | |
198 | while (1) | |
199 | { | |
200 | string P, V; | |
201 | unsigned int Op; | |
202 | Start = debListParser::ParseDepends(Start, Stop, P, V, Op); | |
203 | if (Start == 0) return false; | |
204 | if (P == "debconf") | |
205 | { | |
206 | PreDepVer = V; | |
207 | PreDepOp = Op; | |
208 | break; | |
209 | } | |
210 | if (Start == Stop) break; | |
211 | } | |
212 | } | |
213 | ||
214 | return true; | |
215 | } | |
216 | /*}}}*/ | |
217 | // ShowHelp - show a short help text /*{{{*/ | |
218 | // --------------------------------------------------------------------- | |
219 | /* */ | |
ad7e0941 | 220 | static bool ShowHelp(CommandLine &) |
234edfd0 | 221 | { |
249aec3b | 222 | ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH); |
234edfd0 | 223 | |
ad7e0941 DK |
224 | if (_config->FindB("version") == true) |
225 | return true; | |
5cbf1b49 | 226 | |
ad7e0941 | 227 | cout << |
234edfd0 AL |
228 | _("Usage: apt-extracttemplates file1 [file2 ...]\n" |
229 | "\n" | |
230 | "apt-extracttemplates is a tool to extract config and template info\n" | |
7e726255 AL |
231 | "from debian packages\n" |
232 | "\n" | |
233 | "Options:\n" | |
234 | " -h This help text\n" | |
235 | " -t Set the temp dir\n" | |
236 | " -c=? Read this configuration file\n" | |
a2884e32 | 237 | " -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"); |
ad7e0941 | 238 | return true; |
234edfd0 AL |
239 | } |
240 | /*}}}*/ | |
241 | // WriteFile - write the contents of the passed string to a file /*{{{*/ | |
242 | // --------------------------------------------------------------------- | |
243 | /* */ | |
c3ccac92 | 244 | static string WriteFile(const char *package, const char *prefix, const char *data) |
3fc8f685 AL |
245 | { |
246 | char fn[512]; | |
8eb5af51 | 247 | |
68e01721 | 248 | std::string tempdir = GetTempDir(); |
8d50b63f | 249 | snprintf(fn, sizeof(fn), "%s/%s.%s.XXXXXX", |
68e01721 MV |
250 | _config->Find("APT::ExtractTemplates::TempDir", |
251 | tempdir.c_str()).c_str(), | |
8d50b63f | 252 | package, prefix); |
4decd43c AL |
253 | FileFd f; |
254 | if (data == NULL) | |
255 | data = ""; | |
8d50b63f MV |
256 | int fd = mkstemp(fn); |
257 | if (fd < 0) { | |
258 | _error->Errno("ofstream::ofstream",_("Unable to mkstemp %s"),fn); | |
259 | return string(); | |
260 | } | |
261 | if (!f.OpenDescriptor(fd, FileFd::WriteOnly, FileFd::None, true)) | |
7e726255 AL |
262 | { |
263 | _error->Errno("ofstream::ofstream",_("Unable to write to %s"),fn); | |
264 | return string(); | |
265 | } | |
4decd43c AL |
266 | f.Write(data, strlen(data)); |
267 | f.Close(); | |
7e726255 | 268 | return fn; |
3fc8f685 | 269 | } |
234edfd0 AL |
270 | /*}}}*/ |
271 | // WriteConfig - write out the config data from a debian package file /*{{{*/ | |
272 | // --------------------------------------------------------------------- | |
273 | /* */ | |
c3ccac92 | 274 | static void WriteConfig(const DebFile &file) |
3fc8f685 | 275 | { |
a5eef4f7 AL |
276 | string templatefile = WriteFile(file.Package.c_str(), "template", file.Template); |
277 | string configscript = WriteFile(file.Package.c_str(), "config", file.Config); | |
3fc8f685 | 278 | |
7e726255 | 279 | if (templatefile.empty() == true || configscript.empty() == true) |
3fc8f685 | 280 | return; |
234edfd0 AL |
281 | cout << file.Package << " " << file.Version << " " |
282 | << templatefile << " " << configscript << endl; | |
234edfd0 AL |
283 | } |
284 | /*}}}*/ | |
285 | // InitCache - initialize the package cache /*{{{*/ | |
286 | // --------------------------------------------------------------------- | |
287 | /* */ | |
c3ccac92 | 288 | static bool Go(CommandLine &CmdL) |
7e726255 | 289 | { |
3fc8f685 | 290 | // Initialize the apt cache |
7e726255 | 291 | MMap *Map = 0; |
3fc8f685 AL |
292 | pkgSourceList List; |
293 | List.ReadMainList(); | |
ea4b220b | 294 | pkgCacheGenerator::MakeStatusCache(List,NULL,&Map,true); |
08945efa AL |
295 | if (Map == 0) |
296 | return false; | |
7e726255 AL |
297 | DebFile::Cache = new pkgCache(Map); |
298 | if (_error->PendingError() == true) | |
299 | return false; | |
5cbf1b49 | 300 | |
234edfd0 | 301 | // Find out what version of debconf is currently installed |
7e726255 AL |
302 | string debconfver = DebFile::GetInstalledVer("debconf"); |
303 | if (debconfver.empty() == true) | |
304 | return _error->Error( _("Cannot get debconf version. Is debconf installed?")); | |
3fc8f685 | 305 | |
234edfd0 | 306 | // Process each package passsed in |
5cbf1b49 | 307 | for (unsigned int I = 0; I != CmdL.FileSize(); I++) |
3fc8f685 | 308 | { |
7e726255 | 309 | // Will pick up the errors later.. |
5cbf1b49 | 310 | DebFile file(CmdL.FileList[I]); |
7e726255 | 311 | if (file.Go() == false) |
08945efa AL |
312 | { |
313 | _error->Error("Prior errors apply to %s",CmdL.FileList[I]); | |
314 | continue; | |
315 | } | |
316 | ||
234edfd0 | 317 | // Does the package have templates? |
3fc8f685 AL |
318 | if (file.Template != 0 && file.ParseInfo() == true) |
319 | { | |
234edfd0 AL |
320 | // Check to make sure debconf dependencies are |
321 | // satisfied | |
f034a64a | 322 | // cout << "Check " << file.DepVer << ',' << debconfver << endl; |
234edfd0 | 323 | if (file.DepVer != "" && |
418349f0 AL |
324 | DebFile::Cache->VS->CheckDep(debconfver.c_str(), |
325 | file.DepOp,file.DepVer.c_str() | |
326 | ) == false) | |
3fc8f685 | 327 | continue; |
234edfd0 | 328 | if (file.PreDepVer != "" && |
418349f0 AL |
329 | DebFile::Cache->VS->CheckDep(debconfver.c_str(), |
330 | file.PreDepOp,file.PreDepVer.c_str() | |
331 | ) == false) | |
3fc8f685 AL |
332 | continue; |
333 | ||
234edfd0 | 334 | WriteConfig(file); |
3fc8f685 AL |
335 | } |
336 | } | |
337 | ||
338 | ||
339 | delete Map; | |
340 | delete DebFile::Cache; | |
7e726255 AL |
341 | |
342 | return !_error->PendingError(); | |
343 | } | |
344 | /*}}}*/ | |
92fcbfc1 | 345 | int main(int argc, const char **argv) /*{{{*/ |
7e726255 AL |
346 | { |
347 | CommandLine::Args Args[] = { | |
348 | {'h',"help","help",0}, | |
349 | {'v',"version","version",0}, | |
350 | {'t',"tempdir","APT::ExtractTemplates::TempDir",CommandLine::HasArg}, | |
351 | {'c',"config-file",0,CommandLine::ConfigFile}, | |
352 | {'o',"option",0,CommandLine::ArbItem}, | |
353 | {0,0,0,0}}; | |
67111687 AL |
354 | |
355 | // Set up gettext support | |
356 | setlocale(LC_ALL,""); | |
357 | textdomain(PACKAGE); | |
358 | ||
7e726255 | 359 | // Parse the command line and initialize the package library |
ad7e0941 DK |
360 | CommandLine::Dispatch Cmds[] = {{NULL, NULL}}; |
361 | CommandLine CmdL; | |
362 | ParseCommandLine(CmdL, Cmds, Args, &_config, &_system, argc, argv, ShowHelp); | |
363 | ||
7e726255 | 364 | Go(CmdL); |
3fc8f685 | 365 | |
7e726255 AL |
366 | // Print any errors or warnings found during operation |
367 | if (_error->empty() == false) | |
368 | { | |
369 | // This goes to stderr.. | |
370 | bool Errors = _error->PendingError(); | |
371 | _error->DumpErrors(); | |
372 | return Errors == true?100:0; | |
373 | } | |
374 | ||
3fc8f685 AL |
375 | return 0; |
376 | } | |
92fcbfc1 | 377 | /*}}}*/ |