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1 | // |
2 | // pkgutils | |
3 | // | |
4 | // Copyright (c) 2000-2005 Per Liden | |
0a6aa15d | 5 | // Copyright (c) 2006-2010 by CRUX team (http://crux.nu) |
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6 | // |
7 | // This program is free software; you can redistribute it and/or modify | |
8 | // it under the terms of the GNU General Public License as published by | |
9 | // the Free Software Foundation; either version 2 of the License, or | |
10 | // (at your option) any later version. | |
11 | // | |
12 | // This program is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | // | |
17 | // You should have received a copy of the GNU General Public License | |
18 | // along with this program; if not, write to the Free Software | |
19 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
20 | // USA. | |
21 | // | |
22 | ||
23 | #include "pkgadd.h" | |
24 | #include <fstream> | |
25 | #include <iterator> | |
26 | #include <cstdio> | |
27 | #include <regex.h> | |
28 | #include <unistd.h> | |
29 | ||
30 | void pkgadd::run(int argc, char** argv) | |
31 | { | |
32 | // | |
33 | // Check command line options | |
34 | // | |
35 | string o_root; | |
8b010ae5 | 36 | string o_config; |
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37 | string o_package; |
38 | bool o_upgrade = false; | |
39 | bool o_force = false; | |
40 | ||
41 | for (int i = 1; i < argc; i++) { | |
42 | string option(argv[i]); | |
43 | if (option == "-r" || option == "--root") { | |
44 | assert_argument(argv, argc, i); | |
45 | o_root = argv[i + 1]; | |
46 | i++; | |
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47 | } else if (option == "-c" || option == "--config") { |
48 | assert_argument(argv, argc, i); | |
49 | o_config = argv[i + 1]; | |
50 | i++; | |
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51 | } else if (option == "-u" || option == "--upgrade") { |
52 | o_upgrade = true; | |
53 | } else if (option == "-f" || option == "--force") { | |
54 | o_force = true; | |
55 | } else if (option[0] == '-' || !o_package.empty()) { | |
56 | throw runtime_error("invalid option " + option); | |
57 | } else { | |
58 | o_package = option; | |
59 | } | |
60 | } | |
61 | ||
62 | if (o_package.empty()) | |
63 | throw runtime_error("option missing"); | |
64 | ||
65 | // | |
66 | // Check UID | |
67 | // | |
68 | if (getuid()) | |
69 | throw runtime_error("only root can install/upgrade packages"); | |
70 | ||
71 | // | |
72 | // Install/upgrade package | |
73 | // | |
74 | { | |
75 | db_lock lock(o_root, true); | |
76 | db_open(o_root); | |
77 | ||
78 | pair<string, pkginfo_t> package = pkg_open(o_package); | |
8b010ae5 | 79 | vector<rule_t> config_rules = read_config(o_config); |
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80 | |
81 | bool installed = db_find_pkg(package.first); | |
82 | if (installed && !o_upgrade) | |
83 | throw runtime_error("package " + package.first + " already installed (use -u to upgrade)"); | |
84 | else if (!installed && o_upgrade) | |
85 | throw runtime_error("package " + package.first + " not previously installed (skip -u to install)"); | |
86 | ||
87 | set<string> non_install_files = apply_install_rules(package.first, package.second, config_rules); | |
88 | set<string> conflicting_files = db_find_conflicts(package.first, package.second); | |
89 | ||
90 | if (!conflicting_files.empty()) { | |
91 | if (o_force) { | |
92 | set<string> keep_list; | |
93 | if (o_upgrade) // Don't remove files matching the rules in configuration | |
94 | keep_list = make_keep_list(conflicting_files, config_rules); | |
95 | db_rm_files(conflicting_files, keep_list); // Remove unwanted conflicts | |
96 | } else { | |
97 | copy(conflicting_files.begin(), conflicting_files.end(), ostream_iterator<string>(cerr, "\n")); | |
98 | throw runtime_error("listed file(s) already installed (use -f to ignore and overwrite)"); | |
99 | } | |
100 | } | |
101 | ||
102 | set<string> keep_list; | |
103 | ||
104 | if (o_upgrade) { | |
105 | keep_list = make_keep_list(package.second.files, config_rules); | |
106 | db_rm_pkg(package.first, keep_list); | |
107 | } | |
108 | ||
109 | db_add_pkg(package.first, package.second); | |
110 | db_commit(); | |
111 | pkg_install(o_package, keep_list, non_install_files); | |
112 | ldconfig(); | |
113 | } | |
114 | } | |
115 | ||
116 | void pkgadd::print_help() const | |
117 | { | |
118 | cout << "usage: " << utilname << " [options] <file>" << endl | |
119 | << "options:" << endl | |
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120 | << " -u, --upgrade upgrade package with the same name" << endl |
121 | << " -f, --force force install, overwrite conflicting files" << endl | |
122 | << " -r, --root <path> specify alternative installation root" << endl | |
123 | << " -c, --config <file> use alternate configuration file" << endl | |
124 | << " -v, --version print version and exit" << endl | |
125 | << " -h, --help print help and exit" << endl; | |
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126 | } |
127 | ||
8b010ae5 | 128 | vector<rule_t> pkgadd::read_config(string file) const |
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129 | { |
130 | vector<rule_t> rules; | |
131 | unsigned int linecount = 0; | |
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132 | string filename = root + PKGADD_CONF; |
133 | ||
134 | if (!file.empty()) filename = file; | |
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135 | ifstream in(filename.c_str()); |
136 | ||
137 | if (in) { | |
138 | while (!in.eof()) { | |
139 | string line; | |
140 | getline(in, line); | |
141 | linecount++; | |
142 | if (!line.empty() && line[0] != '#') { | |
143 | if (line.length() >= PKGADD_CONF_MAXLINE) | |
144 | throw runtime_error(filename + ":" + itos(linecount) + ": line too long, aborting"); | |
145 | ||
146 | char event[PKGADD_CONF_MAXLINE]; | |
147 | char pattern[PKGADD_CONF_MAXLINE]; | |
148 | char action[PKGADD_CONF_MAXLINE]; | |
149 | char dummy[PKGADD_CONF_MAXLINE]; | |
150 | if (sscanf(line.c_str(), "%s %s %s %s", event, pattern, action, dummy) != 3) | |
151 | throw runtime_error(filename + ":" + itos(linecount) + ": wrong number of arguments, aborting"); | |
152 | ||
153 | if (!strcmp(event, "UPGRADE") || !strcmp(event, "INSTALL")) { | |
154 | rule_t rule; | |
155 | rule.event = strcmp(event, "UPGRADE") ? INSTALL : UPGRADE; | |
156 | rule.pattern = pattern; | |
157 | if (!strcmp(action, "YES")) { | |
158 | rule.action = true; | |
159 | } else if (!strcmp(action, "NO")) { | |
160 | rule.action = false; | |
161 | } else | |
162 | throw runtime_error(filename + ":" + itos(linecount) + ": '" + | |
163 | string(action) + "' unknown action, should be YES or NO, aborting"); | |
164 | ||
165 | rules.push_back(rule); | |
166 | } else | |
167 | throw runtime_error(filename + ":" + itos(linecount) + ": '" + | |
168 | string(event) + "' unknown event, aborting"); | |
169 | } | |
170 | } | |
171 | in.close(); | |
172 | } | |
173 | ||
174 | #ifndef NDEBUG | |
175 | cerr << "Configuration:" << endl; | |
176 | for (vector<rule_t>::const_iterator j = rules.begin(); j != rules.end(); j++) { | |
177 | cerr << "\t" << (*j).pattern << "\t" << (*j).action << endl; | |
178 | } | |
179 | cerr << endl; | |
180 | #endif | |
181 | ||
182 | return rules; | |
183 | } | |
184 | ||
185 | set<string> pkgadd::make_keep_list(const set<string>& files, const vector<rule_t>& rules) const | |
186 | { | |
187 | set<string> keep_list; | |
188 | vector<rule_t> found; | |
189 | ||
190 | find_rules(rules, UPGRADE, found); | |
191 | ||
192 | for (set<string>::const_iterator i = files.begin(); i != files.end(); i++) { | |
193 | for (vector<rule_t>::reverse_iterator j = found.rbegin(); j != found.rend(); j++) { | |
194 | if (rule_applies_to_file(*j, *i)) { | |
195 | if (!(*j).action) | |
196 | keep_list.insert(keep_list.end(), *i); | |
197 | ||
198 | break; | |
199 | } | |
200 | } | |
201 | } | |
202 | ||
203 | #ifndef NDEBUG | |
204 | cerr << "Keep list:" << endl; | |
205 | for (set<string>::const_iterator j = keep_list.begin(); j != keep_list.end(); j++) { | |
206 | cerr << " " << (*j) << endl; | |
207 | } | |
208 | cerr << endl; | |
209 | #endif | |
210 | ||
211 | return keep_list; | |
212 | } | |
213 | ||
214 | set<string> pkgadd::apply_install_rules(const string& name, pkginfo_t& info, const vector<rule_t>& rules) | |
215 | { | |
216 | // TODO: better algo(?) | |
217 | set<string> install_set; | |
218 | set<string> non_install_set; | |
219 | vector<rule_t> found; | |
220 | ||
221 | find_rules(rules, INSTALL, found); | |
222 | ||
223 | for (set<string>::const_iterator i = info.files.begin(); i != info.files.end(); i++) { | |
224 | bool install_file = true; | |
225 | ||
226 | for (vector<rule_t>::reverse_iterator j = found.rbegin(); j != found.rend(); j++) { | |
227 | if (rule_applies_to_file(*j, *i)) { | |
228 | install_file = (*j).action; | |
229 | break; | |
230 | } | |
231 | } | |
232 | ||
233 | if (install_file) | |
234 | install_set.insert(install_set.end(), *i); | |
235 | else | |
236 | non_install_set.insert(*i); | |
237 | } | |
238 | ||
239 | info.files.clear(); | |
240 | info.files = install_set; | |
241 | ||
242 | #ifndef NDEBUG | |
243 | cerr << "Install set:" << endl; | |
244 | for (set<string>::iterator j = info.files.begin(); j != info.files.end(); j++) { | |
245 | cerr << " " << (*j) << endl; | |
246 | } | |
247 | cerr << endl; | |
248 | ||
249 | cerr << "Non-Install set:" << endl; | |
250 | for (set<string>::iterator j = non_install_set.begin(); j != non_install_set.end(); j++) { | |
251 | cerr << " " << (*j) << endl; | |
252 | } | |
253 | cerr << endl; | |
254 | #endif | |
255 | ||
256 | return non_install_set; | |
257 | } | |
258 | ||
259 | void pkgadd::find_rules(const vector<rule_t>& rules, rule_event_t event, vector<rule_t>& found) const | |
260 | { | |
261 | for (vector<rule_t>::const_iterator i = rules.begin(); i != rules.end(); i++) | |
262 | if (i->event == event) | |
263 | found.push_back(*i); | |
264 | } | |
265 | ||
266 | bool pkgadd::rule_applies_to_file(const rule_t& rule, const string& file) const | |
267 | { | |
268 | regex_t preg; | |
269 | bool ret; | |
270 | ||
271 | if (regcomp(&preg, rule.pattern.c_str(), REG_EXTENDED | REG_NOSUB)) | |
272 | throw runtime_error("error compiling regular expression '" + rule.pattern + "', aborting"); | |
273 | ||
274 | ret = !regexec(&preg, file.c_str(), 0, 0, 0); | |
275 | regfree(&preg); | |
276 | ||
277 | return ret; | |
278 | } |