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1 | // |
2 | // pkgutils | |
3 | // | |
4 | // Copyright (c) 2000-2005 Per Liden | |
5 | // | |
6 | // This program is free software; you can redistribute it and/or modify | |
7 | // it under the terms of the GNU General Public License as published by | |
8 | // the Free Software Foundation; either version 2 of the License, or | |
9 | // (at your option) any later version. | |
10 | // | |
11 | // This program is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | // | |
16 | // You should have received a copy of the GNU General Public License | |
17 | // along with this program; if not, write to the Free Software | |
18 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
19 | // USA. | |
20 | // | |
21 | ||
22 | #include "pkgutil.h" | |
23 | #include <iostream> | |
24 | #include <fstream> | |
25 | #include <iterator> | |
26 | #include <algorithm> | |
27 | #include <cstdio> | |
28 | #include <cstring> | |
29 | #include <cerrno> | |
30 | #include <csignal> | |
31 | #include <ext/stdio_filebuf.h> | |
32 | #include <pwd.h> | |
33 | #include <grp.h> | |
34 | #include <sys/types.h> | |
35 | #include <sys/stat.h> | |
36 | #include <sys/wait.h> | |
37 | #include <sys/file.h> | |
38 | #include <sys/param.h> | |
39 | #include <unistd.h> | |
40 | #include <fcntl.h> | |
41 | #include <zlib.h> | |
42 | #include <libgen.h> | |
c3434674 MCO |
43 | #include <archive.h> |
44 | #include <archive_entry.h> | |
9ac667e6 SR |
45 | |
46 | using __gnu_cxx::stdio_filebuf; | |
47 | ||
9ac667e6 SR |
48 | pkgutil::pkgutil(const string& name) |
49 | : utilname(name) | |
50 | { | |
51 | // Ignore signals | |
52 | struct sigaction sa; | |
53 | memset(&sa, 0, sizeof(sa)); | |
54 | sa.sa_handler = SIG_IGN; | |
55 | sigaction(SIGHUP, &sa, 0); | |
56 | sigaction(SIGINT, &sa, 0); | |
57 | sigaction(SIGQUIT, &sa, 0); | |
58 | sigaction(SIGTERM, &sa, 0); | |
59 | } | |
60 | ||
61 | void pkgutil::db_open(const string& path) | |
62 | { | |
63 | // Read database | |
64 | root = trim_filename(path + "/"); | |
65 | const string filename = root + PKG_DB; | |
66 | ||
67 | int fd = open(filename.c_str(), O_RDONLY); | |
68 | if (fd == -1) | |
69 | throw runtime_error_with_errno("could not open " + filename); | |
70 | ||
71 | stdio_filebuf<char> filebuf(fd, ios::in, getpagesize()); | |
72 | istream in(&filebuf); | |
73 | if (!in) | |
74 | throw runtime_error_with_errno("could not read " + filename); | |
75 | ||
76 | while (!in.eof()) { | |
77 | // Read record | |
78 | string name; | |
79 | pkginfo_t info; | |
80 | getline(in, name); | |
81 | getline(in, info.version); | |
82 | for (;;) { | |
83 | string file; | |
84 | getline(in, file); | |
85 | ||
86 | if (file.empty()) | |
87 | break; // End of record | |
88 | ||
89 | info.files.insert(info.files.end(), file); | |
90 | } | |
91 | if (!info.files.empty()) | |
92 | packages[name] = info; | |
93 | } | |
94 | ||
95 | #ifndef NDEBUG | |
96 | cerr << packages.size() << " packages found in database" << endl; | |
97 | #endif | |
98 | } | |
99 | ||
100 | void pkgutil::db_commit() | |
101 | { | |
102 | const string dbfilename = root + PKG_DB; | |
103 | const string dbfilename_new = dbfilename + ".incomplete_transaction"; | |
104 | const string dbfilename_bak = dbfilename + ".backup"; | |
105 | ||
106 | // Remove failed transaction (if it exists) | |
107 | if (unlink(dbfilename_new.c_str()) == -1 && errno != ENOENT) | |
108 | throw runtime_error_with_errno("could not remove " + dbfilename_new); | |
109 | ||
110 | // Write new database | |
111 | int fd_new = creat(dbfilename_new.c_str(), 0444); | |
112 | if (fd_new == -1) | |
113 | throw runtime_error_with_errno("could not create " + dbfilename_new); | |
114 | ||
115 | stdio_filebuf<char> filebuf_new(fd_new, ios::out, getpagesize()); | |
116 | ostream db_new(&filebuf_new); | |
117 | for (packages_t::const_iterator i = packages.begin(); i != packages.end(); ++i) { | |
118 | if (!i->second.files.empty()) { | |
119 | db_new << i->first << "\n"; | |
120 | db_new << i->second.version << "\n"; | |
121 | copy(i->second.files.begin(), i->second.files.end(), ostream_iterator<string>(db_new, "\n")); | |
122 | db_new << "\n"; | |
123 | } | |
124 | } | |
125 | ||
126 | db_new.flush(); | |
127 | ||
128 | // Make sure the new database was successfully written | |
129 | if (!db_new) | |
130 | throw runtime_error("could not write " + dbfilename_new); | |
131 | ||
132 | // Synchronize file to disk | |
133 | if (fsync(fd_new) == -1) | |
134 | throw runtime_error_with_errno("could not synchronize " + dbfilename_new); | |
135 | ||
136 | // Relink database backup | |
137 | if (unlink(dbfilename_bak.c_str()) == -1 && errno != ENOENT) | |
138 | throw runtime_error_with_errno("could not remove " + dbfilename_bak); | |
139 | if (link(dbfilename.c_str(), dbfilename_bak.c_str()) == -1) | |
140 | throw runtime_error_with_errno("could not create " + dbfilename_bak); | |
141 | ||
142 | // Move new database into place | |
143 | if (rename(dbfilename_new.c_str(), dbfilename.c_str()) == -1) | |
144 | throw runtime_error_with_errno("could not rename " + dbfilename_new + " to " + dbfilename); | |
145 | ||
146 | #ifndef NDEBUG | |
147 | cerr << packages.size() << " packages written to database" << endl; | |
148 | #endif | |
149 | } | |
150 | ||
151 | void pkgutil::db_add_pkg(const string& name, const pkginfo_t& info) | |
152 | { | |
153 | packages[name] = info; | |
154 | } | |
155 | ||
156 | bool pkgutil::db_find_pkg(const string& name) | |
157 | { | |
158 | return (packages.find(name) != packages.end()); | |
159 | } | |
160 | ||
161 | void pkgutil::db_rm_pkg(const string& name) | |
162 | { | |
163 | set<string> files = packages[name].files; | |
164 | packages.erase(name); | |
165 | ||
166 | #ifndef NDEBUG | |
167 | cerr << "Removing package phase 1 (all files in package):" << endl; | |
168 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
169 | cerr << endl; | |
170 | #endif | |
171 | ||
172 | // Don't delete files that still have references | |
173 | for (packages_t::const_iterator i = packages.begin(); i != packages.end(); ++i) | |
174 | for (set<string>::const_iterator j = i->second.files.begin(); j != i->second.files.end(); ++j) | |
175 | files.erase(*j); | |
176 | ||
177 | #ifndef NDEBUG | |
178 | cerr << "Removing package phase 2 (files that still have references excluded):" << endl; | |
179 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
180 | cerr << endl; | |
181 | #endif | |
182 | ||
183 | // Delete the files | |
184 | for (set<string>::const_reverse_iterator i = files.rbegin(); i != files.rend(); ++i) { | |
185 | const string filename = root + *i; | |
186 | if (file_exists(filename) && remove(filename.c_str()) == -1) { | |
187 | const char* msg = strerror(errno); | |
188 | cerr << utilname << ": could not remove " << filename << ": " << msg << endl; | |
189 | } | |
190 | } | |
191 | } | |
192 | ||
193 | void pkgutil::db_rm_pkg(const string& name, const set<string>& keep_list) | |
194 | { | |
195 | set<string> files = packages[name].files; | |
196 | packages.erase(name); | |
197 | ||
198 | #ifndef NDEBUG | |
199 | cerr << "Removing package phase 1 (all files in package):" << endl; | |
200 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
201 | cerr << endl; | |
202 | #endif | |
203 | ||
204 | // Don't delete files found in the keep list | |
205 | for (set<string>::const_iterator i = keep_list.begin(); i != keep_list.end(); ++i) | |
206 | files.erase(*i); | |
207 | ||
208 | #ifndef NDEBUG | |
209 | cerr << "Removing package phase 2 (files that is in the keep list excluded):" << endl; | |
210 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
211 | cerr << endl; | |
212 | #endif | |
213 | ||
214 | // Don't delete files that still have references | |
215 | for (packages_t::const_iterator i = packages.begin(); i != packages.end(); ++i) | |
216 | for (set<string>::const_iterator j = i->second.files.begin(); j != i->second.files.end(); ++j) | |
217 | files.erase(*j); | |
218 | ||
219 | #ifndef NDEBUG | |
220 | cerr << "Removing package phase 3 (files that still have references excluded):" << endl; | |
221 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
222 | cerr << endl; | |
223 | #endif | |
224 | ||
225 | // Delete the files | |
226 | for (set<string>::const_reverse_iterator i = files.rbegin(); i != files.rend(); ++i) { | |
227 | const string filename = root + *i; | |
228 | if (file_exists(filename) && remove(filename.c_str()) == -1) { | |
229 | if (errno == ENOTEMPTY) | |
230 | continue; | |
231 | const char* msg = strerror(errno); | |
232 | cerr << utilname << ": could not remove " << filename << ": " << msg << endl; | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
237 | void pkgutil::db_rm_files(set<string> files, const set<string>& keep_list) | |
238 | { | |
239 | // Remove all references | |
240 | for (packages_t::iterator i = packages.begin(); i != packages.end(); ++i) | |
241 | for (set<string>::const_iterator j = files.begin(); j != files.end(); ++j) | |
242 | i->second.files.erase(*j); | |
243 | ||
244 | #ifndef NDEBUG | |
245 | cerr << "Removing files:" << endl; | |
246 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
247 | cerr << endl; | |
248 | #endif | |
249 | ||
250 | // Don't delete files found in the keep list | |
251 | for (set<string>::const_iterator i = keep_list.begin(); i != keep_list.end(); ++i) | |
252 | files.erase(*i); | |
253 | ||
254 | // Delete the files | |
255 | for (set<string>::const_reverse_iterator i = files.rbegin(); i != files.rend(); ++i) { | |
256 | const string filename = root + *i; | |
257 | if (file_exists(filename) && remove(filename.c_str()) == -1) { | |
258 | if (errno == ENOTEMPTY) | |
259 | continue; | |
260 | const char* msg = strerror(errno); | |
261 | cerr << utilname << ": could not remove " << filename << ": " << msg << endl; | |
262 | } | |
263 | } | |
264 | } | |
265 | ||
266 | set<string> pkgutil::db_find_conflicts(const string& name, const pkginfo_t& info) | |
267 | { | |
268 | set<string> files; | |
269 | ||
270 | // Find conflicting files in database | |
271 | for (packages_t::const_iterator i = packages.begin(); i != packages.end(); ++i) { | |
272 | if (i->first != name) { | |
273 | set_intersection(info.files.begin(), info.files.end(), | |
274 | i->second.files.begin(), i->second.files.end(), | |
275 | inserter(files, files.end())); | |
276 | } | |
277 | } | |
278 | ||
279 | #ifndef NDEBUG | |
280 | cerr << "Conflicts phase 1 (conflicts in database):" << endl; | |
281 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
282 | cerr << endl; | |
283 | #endif | |
284 | ||
285 | // Find conflicting files in filesystem | |
286 | for (set<string>::iterator i = info.files.begin(); i != info.files.end(); ++i) { | |
287 | const string filename = root + *i; | |
288 | if (file_exists(filename) && files.find(*i) == files.end()) | |
289 | files.insert(files.end(), *i); | |
290 | } | |
291 | ||
292 | #ifndef NDEBUG | |
293 | cerr << "Conflicts phase 2 (conflicts in filesystem added):" << endl; | |
294 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
295 | cerr << endl; | |
296 | #endif | |
297 | ||
298 | // Exclude directories | |
299 | set<string> tmp = files; | |
300 | for (set<string>::const_iterator i = tmp.begin(); i != tmp.end(); ++i) { | |
301 | if ((*i)[i->length() - 1] == '/') | |
302 | files.erase(*i); | |
303 | } | |
304 | ||
305 | #ifndef NDEBUG | |
306 | cerr << "Conflicts phase 3 (directories excluded):" << endl; | |
307 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
308 | cerr << endl; | |
309 | #endif | |
310 | ||
311 | // If this is an upgrade, remove files already owned by this package | |
312 | if (packages.find(name) != packages.end()) { | |
313 | for (set<string>::const_iterator i = packages[name].files.begin(); i != packages[name].files.end(); ++i) | |
314 | files.erase(*i); | |
315 | ||
316 | #ifndef NDEBUG | |
317 | cerr << "Conflicts phase 4 (files already owned by this package excluded):" << endl; | |
318 | copy(files.begin(), files.end(), ostream_iterator<string>(cerr, "\n")); | |
319 | cerr << endl; | |
320 | #endif | |
321 | } | |
322 | ||
323 | return files; | |
324 | } | |
325 | ||
326 | pair<string, pkgutil::pkginfo_t> pkgutil::pkg_open(const string& filename) const | |
327 | { | |
328 | pair<string, pkginfo_t> result; | |
329 | unsigned int i; | |
c3434674 MCO |
330 | struct archive* archive; |
331 | struct archive_entry* entry; | |
9ac667e6 SR |
332 | |
333 | // Extract name and version from filename | |
334 | string basename(filename, filename.rfind('/') + 1); | |
335 | string name(basename, 0, basename.find(VERSION_DELIM)); | |
336 | string version(basename, 0, basename.rfind(PKG_EXT)); | |
337 | version.erase(0, version.find(VERSION_DELIM) == string::npos ? string::npos : version.find(VERSION_DELIM) + 1); | |
338 | ||
339 | if (name.empty() || version.empty()) | |
340 | throw runtime_error("could not determine name and/or version of " + basename + ": Invalid package name"); | |
341 | ||
342 | result.first = name; | |
343 | result.second.version = version; | |
344 | ||
c3434674 MCO |
345 | archive = archive_read_new(); |
346 | archive_read_support_compression_all(archive); | |
347 | archive_read_support_format_all(archive); | |
348 | ||
349 | if (archive_read_open_filename(archive, | |
350 | const_cast<char*>(filename.c_str()), | |
351 | ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) | |
25f9975c | 352 | throw runtime_error_with_errno("could not open " + filename, archive_errno(archive)); |
9ac667e6 | 353 | |
c3434674 MCO |
354 | for (i = 0; archive_read_next_header(archive, &entry) == |
355 | ARCHIVE_OK; ++i) { | |
c3434674 MCO |
356 | |
357 | result.second.files.insert(result.second.files.end(), | |
358 | archive_entry_pathname(entry)); | |
359 | ||
7f84e1cc | 360 | mode_t mode = archive_entry_mode(entry); |
c3434674 | 361 | |
7f84e1cc | 362 | if (S_ISREG(mode) && |
c3434674 | 363 | archive_read_data_skip(archive) != ARCHIVE_OK) |
25f9975c | 364 | throw runtime_error_with_errno("could not read " + filename, archive_errno(archive)); |
9ac667e6 SR |
365 | } |
366 | ||
367 | if (i == 0) { | |
c3434674 | 368 | if (archive_errno(archive) == 0) |
9ac667e6 SR |
369 | throw runtime_error("empty package"); |
370 | else | |
371 | throw runtime_error("could not read " + filename); | |
372 | } | |
373 | ||
c3434674 | 374 | archive_read_finish(archive); |
9ac667e6 SR |
375 | |
376 | return result; | |
377 | } | |
378 | ||
3e5b7ed9 | 379 | void pkgutil::pkg_install(const string& filename, const set<string>& keep_list, const set<string>& non_install_list) const |
9ac667e6 | 380 | { |
c3434674 MCO |
381 | struct archive* archive; |
382 | struct archive_entry* entry; | |
9ac667e6 SR |
383 | unsigned int i; |
384 | ||
c3434674 MCO |
385 | archive = archive_read_new(); |
386 | archive_read_support_compression_all(archive); | |
387 | archive_read_support_format_all(archive); | |
388 | ||
389 | if (archive_read_open_filename(archive, | |
390 | const_cast<char*>(filename.c_str()), | |
391 | ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) | |
25f9975c | 392 | throw runtime_error_with_errno("could not open " + filename, archive_errno(archive)); |
9ac667e6 | 393 | |
c3434674 MCO |
394 | chdir(root.c_str()); |
395 | ||
396 | for (i = 0; archive_read_next_header(archive, &entry) == | |
397 | ARCHIVE_OK; ++i) { | |
398 | string archive_filename = archive_entry_pathname(entry); | |
9ac667e6 SR |
399 | string reject_dir = trim_filename(root + string("/") + string(PKG_REJECTED)); |
400 | string original_filename = trim_filename(root + string("/") + archive_filename); | |
401 | string real_filename = original_filename; | |
402 | ||
3e5b7ed9 TS |
403 | // Check if file is filtered out via INSTALL |
404 | if (non_install_list.find(archive_filename) != non_install_list.end()) { | |
7f84e1cc | 405 | mode_t mode; |
c3434674 | 406 | |
22131995 TS |
407 | cout << utilname << ": ignoring " << archive_filename << endl; |
408 | ||
7f84e1cc | 409 | mode = archive_entry_mode(entry); |
c3434674 | 410 | |
7f84e1cc | 411 | if (S_ISREG(mode)) |
c3434674 | 412 | archive_read_data_skip(archive); |
3e5b7ed9 TS |
413 | |
414 | continue; | |
415 | } | |
416 | ||
9ac667e6 SR |
417 | // Check if file should be rejected |
418 | if (file_exists(real_filename) && keep_list.find(archive_filename) != keep_list.end()) | |
419 | real_filename = trim_filename(reject_dir + string("/") + archive_filename); | |
420 | ||
c3434674 MCO |
421 | archive_entry_set_pathname(entry, const_cast<char*> |
422 | (real_filename.c_str())); | |
423 | ||
9ac667e6 | 424 | // Extract file |
25efd91b | 425 | if (archive_read_extract(archive, entry, ARCHIVE_EXTRACT_OWNER && ARCHIVE_EXTRACT_PERM) != |
c3434674 | 426 | ARCHIVE_OK) { |
9ac667e6 SR |
427 | // If a file fails to install we just print an error message and |
428 | // continue trying to install the rest of the package. | |
c3434674 | 429 | const char* msg = archive_error_string(archive); |
9ac667e6 SR |
430 | cerr << utilname << ": could not install " + archive_filename << ": " << msg << endl; |
431 | continue; | |
432 | } | |
433 | ||
434 | // Check rejected file | |
435 | if (real_filename != original_filename) { | |
436 | bool remove_file = false; | |
7f84e1cc | 437 | mode_t mode = archive_entry_mode(entry); |
9ac667e6 SR |
438 | |
439 | // Directory | |
7f84e1cc | 440 | if (S_ISDIR(mode)) |
9ac667e6 SR |
441 | remove_file = permissions_equal(real_filename, original_filename); |
442 | // Other files | |
443 | else | |
444 | remove_file = permissions_equal(real_filename, original_filename) && | |
445 | (file_empty(real_filename) || file_equal(real_filename, original_filename)); | |
446 | ||
447 | // Remove rejected file or signal about its existence | |
448 | if (remove_file) | |
449 | file_remove(reject_dir, real_filename); | |
450 | else | |
451 | cout << utilname << ": rejecting " << archive_filename << ", keeping existing version" << endl; | |
452 | } | |
453 | } | |
454 | ||
455 | if (i == 0) { | |
c3434674 | 456 | if (archive_errno(archive) == 0) |
9ac667e6 SR |
457 | throw runtime_error("empty package"); |
458 | else | |
459 | throw runtime_error("could not read " + filename); | |
460 | } | |
461 | ||
c3434674 | 462 | archive_read_finish(archive); |
9ac667e6 SR |
463 | } |
464 | ||
465 | void pkgutil::ldconfig() const | |
466 | { | |
467 | // Only execute ldconfig if /etc/ld.so.conf exists | |
468 | if (file_exists(root + LDCONFIG_CONF)) { | |
469 | pid_t pid = fork(); | |
470 | ||
471 | if (pid == -1) | |
472 | throw runtime_error_with_errno("fork() failed"); | |
473 | ||
474 | if (pid == 0) { | |
5401bd45 | 475 | execl(LDCONFIG, LDCONFIG, "-r", root.c_str(), (char *) 0); |
9ac667e6 SR |
476 | const char* msg = strerror(errno); |
477 | cerr << utilname << ": could not execute " << LDCONFIG << ": " << msg << endl; | |
478 | exit(EXIT_FAILURE); | |
479 | } else { | |
480 | if (waitpid(pid, 0, 0) == -1) | |
481 | throw runtime_error_with_errno("waitpid() failed"); | |
482 | } | |
483 | } | |
484 | } | |
485 | ||
486 | void pkgutil::pkg_footprint(string& filename) const | |
487 | { | |
fa6b0879 | 488 | unsigned int i; |
c3434674 MCO |
489 | struct archive* archive; |
490 | struct archive_entry* entry; | |
9ac667e6 | 491 | |
80db05ef TS |
492 | map<string, mode_t> hardlink_target_modes; |
493 | ||
494 | // We first do a run over the archive and remember the modes | |
495 | // of regular files. | |
496 | // In the second run, we print the footprint - using the stored | |
497 | // modes for hardlinks. | |
498 | // | |
499 | // FIXME the code duplication here is butt ugly | |
500 | archive = archive_read_new(); | |
501 | archive_read_support_compression_all(archive); | |
502 | archive_read_support_format_all(archive); | |
503 | ||
504 | if (archive_read_open_filename(archive, | |
505 | const_cast<char*>(filename.c_str()), | |
506 | ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) | |
507 | throw runtime_error_with_errno("could not open " + filename, archive_errno(archive)); | |
508 | ||
509 | for (i = 0; archive_read_next_header(archive, &entry) == | |
510 | ARCHIVE_OK; ++i) { | |
511 | ||
512 | mode_t mode = archive_entry_mode(entry); | |
513 | ||
514 | if (!archive_entry_hardlink(entry)) { | |
515 | const char *s = archive_entry_pathname(entry); | |
516 | ||
517 | hardlink_target_modes[s] = mode; | |
518 | } | |
519 | ||
520 | if (S_ISREG(mode) && archive_read_data_skip(archive)) | |
521 | throw runtime_error_with_errno("could not read " + filename, archive_errno(archive)); | |
522 | } | |
523 | ||
524 | archive_read_finish(archive); | |
525 | ||
526 | // Too bad, there doesn't seem to be a way to reuse our archive | |
527 | // instance | |
c3434674 MCO |
528 | archive = archive_read_new(); |
529 | archive_read_support_compression_all(archive); | |
530 | archive_read_support_format_all(archive); | |
531 | ||
532 | if (archive_read_open_filename(archive, | |
533 | const_cast<char*>(filename.c_str()), | |
534 | ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) | |
25f9975c | 535 | throw runtime_error_with_errno("could not open " + filename, archive_errno(archive)); |
9ac667e6 | 536 | |
c3434674 MCO |
537 | for (i = 0; archive_read_next_header(archive, &entry) == |
538 | ARCHIVE_OK; ++i) { | |
7f84e1cc | 539 | mode_t mode = archive_entry_mode(entry); |
c3434674 | 540 | |
9ac667e6 | 541 | // Access permissions |
7f84e1cc | 542 | if (S_ISLNK(mode)) { |
9ac667e6 SR |
543 | // Access permissions on symlinks differ among filesystems, e.g. XFS and ext2 have different. |
544 | // To avoid getting different footprints we always use "lrwxrwxrwx". | |
545 | cout << "lrwxrwxrwx"; | |
546 | } else { | |
80db05ef TS |
547 | const char *h = archive_entry_hardlink(entry); |
548 | ||
549 | if (h) | |
550 | cout << mtos(hardlink_target_modes[h]); | |
551 | else | |
552 | cout << mtos(mode); | |
9ac667e6 SR |
553 | } |
554 | ||
555 | cout << '\t'; | |
556 | ||
557 | // User | |
c3434674 | 558 | uid_t uid = archive_entry_uid(entry); |
9ac667e6 SR |
559 | struct passwd* pw = getpwuid(uid); |
560 | if (pw) | |
561 | cout << pw->pw_name; | |
562 | else | |
563 | cout << uid; | |
564 | ||
565 | cout << '/'; | |
566 | ||
567 | // Group | |
c3434674 | 568 | gid_t gid = archive_entry_gid(entry); |
9ac667e6 SR |
569 | struct group* gr = getgrgid(gid); |
570 | if (gr) | |
571 | cout << gr->gr_name; | |
572 | else | |
573 | cout << gid; | |
574 | ||
575 | // Filename | |
c3434674 | 576 | cout << '\t' << archive_entry_pathname(entry); |
9ac667e6 SR |
577 | |
578 | // Special cases | |
7f84e1cc | 579 | if (S_ISLNK(mode)) { |
9ac667e6 | 580 | // Symlink |
c3434674 | 581 | cout << " -> " << archive_entry_symlink(entry); |
7f84e1cc TS |
582 | } else if (S_ISCHR(mode) || |
583 | S_ISBLK(mode)) { | |
9ac667e6 | 584 | // Device |
c3434674 MCO |
585 | cout << " (" << archive_entry_rdevmajor(entry) |
586 | << ", " << archive_entry_rdevminor(entry) | |
587 | << ")"; | |
7f84e1cc | 588 | } else if (S_ISREG(mode) && |
c3434674 | 589 | archive_entry_size(entry) == 0) { |
9ac667e6 SR |
590 | // Empty regular file |
591 | cout << " (EMPTY)"; | |
592 | } | |
593 | ||
594 | cout << '\n'; | |
595 | ||
7f84e1cc | 596 | if (S_ISREG(mode) && archive_read_data_skip(archive)) |
fa6b0879 TS |
597 | throw runtime_error_with_errno("could not read " + filename, archive_errno(archive)); |
598 | } | |
9ac667e6 | 599 | |
fa6b0879 | 600 | if (i == 0) { |
c3434674 | 601 | if (archive_errno(archive) == 0) |
fa6b0879 TS |
602 | throw runtime_error("empty package"); |
603 | else | |
604 | throw runtime_error("could not read " + filename); | |
605 | } | |
9ac667e6 | 606 | |
c3434674 | 607 | archive_read_finish(archive); |
9ac667e6 SR |
608 | } |
609 | ||
610 | void pkgutil::print_version() const | |
611 | { | |
612 | cout << utilname << " (pkgutils) " << VERSION << endl; | |
613 | } | |
614 | ||
615 | db_lock::db_lock(const string& root, bool exclusive) | |
616 | : dir(0) | |
617 | { | |
618 | const string dirname = trim_filename(root + string("/") + PKG_DIR); | |
619 | ||
620 | if (!(dir = opendir(dirname.c_str()))) | |
621 | throw runtime_error_with_errno("could not read directory " + dirname); | |
622 | ||
623 | if (flock(dirfd(dir), (exclusive ? LOCK_EX : LOCK_SH) | LOCK_NB) == -1) { | |
624 | if (errno == EWOULDBLOCK) | |
625 | throw runtime_error("package database is currently locked by another process"); | |
626 | else | |
627 | throw runtime_error_with_errno("could not lock directory " + dirname); | |
628 | } | |
629 | } | |
630 | ||
631 | db_lock::~db_lock() | |
632 | { | |
633 | if (dir) { | |
634 | flock(dirfd(dir), LOCK_UN); | |
635 | closedir(dir); | |
636 | } | |
637 | } | |
638 | ||
639 | void assert_argument(char** argv, int argc, int index) | |
640 | { | |
641 | if (argc - 1 < index + 1) | |
642 | throw runtime_error("option " + string(argv[index]) + " requires an argument"); | |
643 | } | |
644 | ||
645 | string itos(unsigned int value) | |
646 | { | |
647 | static char buf[20]; | |
648 | sprintf(buf, "%u", value); | |
649 | return buf; | |
650 | } | |
651 | ||
652 | string mtos(mode_t mode) | |
653 | { | |
654 | string s; | |
655 | ||
656 | // File type | |
657 | switch (mode & S_IFMT) { | |
658 | case S_IFREG: s += '-'; break; // Regular | |
659 | case S_IFDIR: s += 'd'; break; // Directory | |
660 | case S_IFLNK: s += 'l'; break; // Symbolic link | |
661 | case S_IFCHR: s += 'c'; break; // Character special | |
662 | case S_IFBLK: s += 'b'; break; // Block special | |
663 | case S_IFSOCK: s += 's'; break; // Socket | |
664 | case S_IFIFO: s += 'p'; break; // Fifo | |
665 | default: s += '?'; break; // Unknown | |
666 | } | |
667 | ||
668 | // User permissions | |
669 | s += (mode & S_IRUSR) ? 'r' : '-'; | |
670 | s += (mode & S_IWUSR) ? 'w' : '-'; | |
671 | switch (mode & (S_IXUSR | S_ISUID)) { | |
672 | case S_IXUSR: s += 'x'; break; | |
673 | case S_ISUID: s += 'S'; break; | |
674 | case S_IXUSR | S_ISUID: s += 's'; break; | |
675 | default: s += '-'; break; | |
676 | } | |
677 | ||
678 | // Group permissions | |
679 | s += (mode & S_IRGRP) ? 'r' : '-'; | |
680 | s += (mode & S_IWGRP) ? 'w' : '-'; | |
681 | switch (mode & (S_IXGRP | S_ISGID)) { | |
682 | case S_IXGRP: s += 'x'; break; | |
683 | case S_ISGID: s += 'S'; break; | |
684 | case S_IXGRP | S_ISGID: s += 's'; break; | |
685 | default: s += '-'; break; | |
686 | } | |
687 | ||
688 | // Other permissions | |
689 | s += (mode & S_IROTH) ? 'r' : '-'; | |
690 | s += (mode & S_IWOTH) ? 'w' : '-'; | |
691 | switch (mode & (S_IXOTH | S_ISVTX)) { | |
692 | case S_IXOTH: s += 'x'; break; | |
693 | case S_ISVTX: s += 'T'; break; | |
694 | case S_IXOTH | S_ISVTX: s += 't'; break; | |
695 | default: s += '-'; break; | |
696 | } | |
697 | ||
698 | return s; | |
699 | } | |
700 | ||
701 | int unistd_gzopen(char* pathname, int flags, mode_t mode) | |
702 | { | |
703 | char* gz_mode; | |
704 | ||
705 | switch (flags & O_ACCMODE) { | |
706 | case O_WRONLY: | |
707 | gz_mode = "w"; | |
708 | break; | |
709 | ||
710 | case O_RDONLY: | |
711 | gz_mode = "r"; | |
712 | break; | |
713 | ||
714 | case O_RDWR: | |
715 | default: | |
716 | errno = EINVAL; | |
717 | return -1; | |
718 | } | |
719 | ||
720 | int fd; | |
721 | gzFile gz_file; | |
722 | ||
723 | if ((fd = open(pathname, flags, mode)) == -1) | |
724 | return -1; | |
725 | ||
726 | if ((flags & O_CREAT) && fchmod(fd, mode)) | |
727 | return -1; | |
728 | ||
729 | if (!(gz_file = gzdopen(fd, gz_mode))) { | |
730 | errno = ENOMEM; | |
731 | return -1; | |
732 | } | |
733 | ||
734 | return (int)gz_file; | |
735 | } | |
736 | ||
737 | string trim_filename(const string& filename) | |
738 | { | |
739 | string search("//"); | |
740 | string result = filename; | |
741 | ||
742 | for (string::size_type pos = result.find(search); pos != string::npos; pos = result.find(search)) | |
743 | result.replace(pos, search.size(), "/"); | |
744 | ||
745 | return result; | |
746 | } | |
747 | ||
748 | bool file_exists(const string& filename) | |
749 | { | |
750 | struct stat buf; | |
751 | return !lstat(filename.c_str(), &buf); | |
752 | } | |
753 | ||
754 | bool file_empty(const string& filename) | |
755 | { | |
756 | struct stat buf; | |
757 | ||
758 | if (lstat(filename.c_str(), &buf) == -1) | |
759 | return false; | |
760 | ||
761 | return (S_ISREG(buf.st_mode) && buf.st_size == 0); | |
762 | } | |
763 | ||
764 | bool file_equal(const string& file1, const string& file2) | |
765 | { | |
766 | struct stat buf1, buf2; | |
767 | ||
768 | if (lstat(file1.c_str(), &buf1) == -1) | |
769 | return false; | |
770 | ||
771 | if (lstat(file2.c_str(), &buf2) == -1) | |
772 | return false; | |
773 | ||
774 | // Regular files | |
775 | if (S_ISREG(buf1.st_mode) && S_ISREG(buf2.st_mode)) { | |
776 | ifstream f1(file1.c_str()); | |
777 | ifstream f2(file2.c_str()); | |
778 | ||
779 | if (!f1 || !f2) | |
780 | return false; | |
781 | ||
782 | while (!f1.eof()) { | |
783 | char buffer1[4096]; | |
784 | char buffer2[4096]; | |
785 | f1.read(buffer1, 4096); | |
786 | f2.read(buffer2, 4096); | |
787 | if (f1.gcount() != f2.gcount() || | |
788 | memcmp(buffer1, buffer2, f1.gcount()) || | |
789 | f1.eof() != f2.eof()) | |
790 | return false; | |
791 | } | |
792 | ||
793 | return true; | |
794 | } | |
795 | // Symlinks | |
796 | else if (S_ISLNK(buf1.st_mode) && S_ISLNK(buf2.st_mode)) { | |
797 | char symlink1[MAXPATHLEN]; | |
798 | char symlink2[MAXPATHLEN]; | |
799 | ||
800 | memset(symlink1, 0, MAXPATHLEN); | |
801 | memset(symlink2, 0, MAXPATHLEN); | |
802 | ||
803 | if (readlink(file1.c_str(), symlink1, MAXPATHLEN - 1) == -1) | |
804 | return false; | |
805 | ||
806 | if (readlink(file2.c_str(), symlink2, MAXPATHLEN - 1) == -1) | |
807 | return false; | |
808 | ||
809 | return !strncmp(symlink1, symlink2, MAXPATHLEN); | |
810 | } | |
811 | // Character devices | |
812 | else if (S_ISCHR(buf1.st_mode) && S_ISCHR(buf2.st_mode)) { | |
813 | return buf1.st_dev == buf2.st_dev; | |
814 | } | |
815 | // Block devices | |
816 | else if (S_ISBLK(buf1.st_mode) && S_ISBLK(buf2.st_mode)) { | |
817 | return buf1.st_dev == buf2.st_dev; | |
818 | } | |
819 | ||
820 | return false; | |
821 | } | |
822 | ||
823 | bool permissions_equal(const string& file1, const string& file2) | |
824 | { | |
825 | struct stat buf1; | |
826 | struct stat buf2; | |
827 | ||
828 | if (lstat(file1.c_str(), &buf1) == -1) | |
829 | return false; | |
830 | ||
831 | if (lstat(file2.c_str(), &buf2) == -1) | |
832 | return false; | |
833 | ||
834 | return(buf1.st_mode == buf2.st_mode) && | |
835 | (buf1.st_uid == buf2.st_uid) && | |
836 | (buf1.st_gid == buf2.st_gid); | |
837 | } | |
838 | ||
839 | void file_remove(const string& basedir, const string& filename) | |
840 | { | |
841 | if (filename != basedir && !remove(filename.c_str())) { | |
842 | char* path = strdup(filename.c_str()); | |
843 | file_remove(basedir, dirname(path)); | |
844 | free(path); | |
845 | } | |
846 | } |