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9ac667e6 SR |
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 "pkgadd.h" | |
23 | #include <fstream> | |
24 | #include <iterator> | |
25 | #include <cstdio> | |
26 | #include <regex.h> | |
27 | #include <unistd.h> | |
28 | ||
29 | void pkgadd::run(int argc, char** argv) | |
30 | { | |
31 | // | |
32 | // Check command line options | |
33 | // | |
34 | string o_root; | |
35 | string o_package; | |
36 | bool o_upgrade = false; | |
37 | bool o_force = false; | |
38 | ||
39 | for (int i = 1; i < argc; i++) { | |
40 | string option(argv[i]); | |
41 | if (option == "-r" || option == "--root") { | |
42 | assert_argument(argv, argc, i); | |
43 | o_root = argv[i + 1]; | |
44 | i++; | |
45 | } else if (option == "-u" || option == "--upgrade") { | |
46 | o_upgrade = true; | |
47 | } else if (option == "-f" || option == "--force") { | |
48 | o_force = true; | |
49 | } else if (option[0] == '-' || !o_package.empty()) { | |
50 | throw runtime_error("invalid option " + option); | |
51 | } else { | |
52 | o_package = option; | |
53 | } | |
54 | } | |
55 | ||
56 | if (o_package.empty()) | |
57 | throw runtime_error("option missing"); | |
58 | ||
59 | // | |
60 | // Check UID | |
61 | // | |
62 | if (getuid()) | |
63 | throw runtime_error("only root can install/upgrade packages"); | |
64 | ||
65 | // | |
66 | // Install/upgrade package | |
67 | // | |
68 | { | |
69 | db_lock lock(o_root, true); | |
70 | db_open(o_root); | |
71 | ||
72 | pair<string, pkginfo_t> package = pkg_open(o_package); | |
73 | vector<rule_t> config_rules = read_config(); | |
74 | ||
75 | bool installed = db_find_pkg(package.first); | |
76 | if (installed && !o_upgrade) | |
77 | throw runtime_error("package " + package.first + " already installed (use -u to upgrade)"); | |
78 | else if (!installed && o_upgrade) | |
79 | throw runtime_error("package " + package.first + " not previously installed (skip -u to install)"); | |
80 | ||
3e5b7ed9 | 81 | set<string> non_install_files = apply_install_rules(package.first, package.second, config_rules); |
9ac667e6 SR |
82 | set<string> conflicting_files = db_find_conflicts(package.first, package.second); |
83 | ||
84 | if (!conflicting_files.empty()) { | |
85 | if (o_force) { | |
86 | set<string> keep_list; | |
87 | if (o_upgrade) // Don't remove files matching the rules in configuration | |
88 | keep_list = make_keep_list(conflicting_files, config_rules); | |
89 | db_rm_files(conflicting_files, keep_list); // Remove unwanted conflicts | |
90 | } else { | |
91 | copy(conflicting_files.begin(), conflicting_files.end(), ostream_iterator<string>(cerr, "\n")); | |
92 | throw runtime_error("listed file(s) already installed (use -f to ignore and overwrite)"); | |
93 | } | |
94 | } | |
95 | ||
96 | set<string> keep_list; | |
97 | ||
98 | if (o_upgrade) { | |
99 | keep_list = make_keep_list(package.second.files, config_rules); | |
100 | db_rm_pkg(package.first, keep_list); | |
101 | } | |
102 | ||
103 | db_add_pkg(package.first, package.second); | |
104 | db_commit(); | |
3e5b7ed9 | 105 | pkg_install(o_package, keep_list, non_install_files); |
9ac667e6 SR |
106 | ldconfig(); |
107 | } | |
108 | } | |
109 | ||
110 | void pkgadd::print_help() const | |
111 | { | |
112 | cout << "usage: " << utilname << " [options] <file>" << endl | |
113 | << "options:" << endl | |
114 | << " -u, --upgrade upgrade package with the same name" << endl | |
115 | << " -f, --force force install, overwrite conflicting files" << endl | |
116 | << " -r, --root <path> specify alternative installation root" << endl | |
117 | << " -v, --version print version and exit" << endl | |
118 | << " -h, --help print help and exit" << endl; | |
119 | } | |
120 | ||
121 | vector<rule_t> pkgadd::read_config() const | |
122 | { | |
123 | vector<rule_t> rules; | |
124 | unsigned int linecount = 0; | |
125 | const string filename = root + PKGADD_CONF; | |
126 | ifstream in(filename.c_str()); | |
127 | ||
128 | if (in) { | |
129 | while (!in.eof()) { | |
130 | string line; | |
131 | getline(in, line); | |
132 | linecount++; | |
133 | if (!line.empty() && line[0] != '#') { | |
134 | if (line.length() >= PKGADD_CONF_MAXLINE) | |
135 | throw runtime_error(filename + ":" + itos(linecount) + ": line too long, aborting"); | |
136 | ||
137 | char event[PKGADD_CONF_MAXLINE]; | |
138 | char pattern[PKGADD_CONF_MAXLINE]; | |
139 | char action[PKGADD_CONF_MAXLINE]; | |
140 | char dummy[PKGADD_CONF_MAXLINE]; | |
141 | if (sscanf(line.c_str(), "%s %s %s %s", event, pattern, action, dummy) != 3) | |
142 | throw runtime_error(filename + ":" + itos(linecount) + ": wrong number of arguments, aborting"); | |
143 | ||
3e5b7ed9 | 144 | if (!strcmp(event, "UPGRADE") || !strcmp(event, "INSTALL")) { |
9ac667e6 | 145 | rule_t rule; |
3e5b7ed9 | 146 | rule.event = strcmp(event, "UPGRADE") ? INSTALL : UPGRADE; |
9ac667e6 SR |
147 | rule.pattern = pattern; |
148 | if (!strcmp(action, "YES")) { | |
149 | rule.action = true; | |
150 | } else if (!strcmp(action, "NO")) { | |
151 | rule.action = false; | |
152 | } else | |
153 | throw runtime_error(filename + ":" + itos(linecount) + ": '" + | |
154 | string(action) + "' unknown action, should be YES or NO, aborting"); | |
155 | ||
156 | rules.push_back(rule); | |
157 | } else | |
158 | throw runtime_error(filename + ":" + itos(linecount) + ": '" + | |
159 | string(event) + "' unknown event, aborting"); | |
160 | } | |
161 | } | |
162 | in.close(); | |
163 | } | |
164 | ||
165 | #ifndef NDEBUG | |
166 | cerr << "Configuration:" << endl; | |
167 | for (vector<rule_t>::const_iterator j = rules.begin(); j != rules.end(); j++) { | |
168 | cerr << "\t" << (*j).pattern << "\t" << (*j).action << endl; | |
169 | } | |
170 | cerr << endl; | |
171 | #endif | |
172 | ||
173 | return rules; | |
174 | } | |
175 | ||
176 | set<string> pkgadd::make_keep_list(const set<string>& files, const vector<rule_t>& rules) const | |
177 | { | |
178 | set<string> keep_list; | |
1e0dfb6d TS |
179 | vector<rule_t> found; |
180 | ||
181 | find_rules(rules, UPGRADE, found); | |
9ac667e6 SR |
182 | |
183 | for (set<string>::const_iterator i = files.begin(); i != files.end(); i++) { | |
1e0dfb6d TS |
184 | for (vector<rule_t>::reverse_iterator j = found.rbegin(); j != found.rend(); j++) { |
185 | if (rule_applies_to_file(*j, *i)) { | |
186 | if (!(*j).action) | |
187 | keep_list.insert(keep_list.end(), *i); | |
188 | ||
189 | break; | |
9ac667e6 SR |
190 | } |
191 | } | |
192 | } | |
193 | ||
194 | #ifndef NDEBUG | |
195 | cerr << "Keep list:" << endl; | |
196 | for (set<string>::const_iterator j = keep_list.begin(); j != keep_list.end(); j++) { | |
197 | cerr << " " << (*j) << endl; | |
198 | } | |
199 | cerr << endl; | |
200 | #endif | |
201 | ||
202 | return keep_list; | |
203 | } | |
1e0dfb6d | 204 | |
3e5b7ed9 TS |
205 | set<string> pkgadd::apply_install_rules(const string& name, pkginfo_t& info, const vector<rule_t>& rules) |
206 | { | |
207 | // TODO: better algo(?) | |
208 | set<string> install_set; | |
209 | set<string> non_install_set; | |
210 | vector<rule_t> found; | |
211 | ||
212 | find_rules(rules, INSTALL, found); | |
213 | ||
214 | for (set<string>::const_iterator i = info.files.begin(); i != info.files.end(); i++) { | |
215 | bool install_file = true; | |
216 | ||
217 | for (vector<rule_t>::reverse_iterator j = found.rbegin(); j != found.rend(); j++) { | |
218 | if (rule_applies_to_file(*j, *i)) { | |
219 | install_file = (*j).action; | |
220 | break; | |
221 | } | |
222 | } | |
223 | ||
224 | if (install_file) | |
225 | install_set.insert(install_set.end(), *i); | |
226 | else | |
227 | non_install_set.insert(*i); | |
228 | } | |
229 | ||
230 | info.files.clear(); | |
231 | info.files = install_set; | |
232 | ||
233 | #ifndef NDEBUG | |
234 | cerr << "Install set:" << endl; | |
235 | for (set<string>::iterator j = info.files.begin(); j != info.files.end(); j++) { | |
236 | cerr << " " << (*j) << endl; | |
237 | } | |
238 | cerr << endl; | |
239 | ||
240 | cerr << "Non-Install set:" << endl; | |
241 | for (set<string>::iterator j = non_install_set.begin(); j != non_install_set.end(); j++) { | |
242 | cerr << " " << (*j) << endl; | |
243 | } | |
244 | cerr << endl; | |
245 | #endif | |
246 | ||
247 | return non_install_set; | |
248 | } | |
249 | ||
1e0dfb6d TS |
250 | void pkgadd::find_rules(const vector<rule_t>& rules, rule_event_t event, vector<rule_t>& found) const |
251 | { | |
252 | for (vector<rule_t>::const_iterator i = rules.begin(); i != rules.end(); i++) | |
253 | if (i->event == event) | |
254 | found.push_back(*i); | |
255 | } | |
256 | ||
257 | bool pkgadd::rule_applies_to_file(const rule_t& rule, const string& file) const | |
258 | { | |
259 | regex_t preg; | |
260 | bool ret; | |
261 | ||
262 | if (regcomp(&preg, rule.pattern.c_str(), REG_EXTENDED | REG_NOSUB)) | |
263 | throw runtime_error("error compiling regular expression '" + rule.pattern + "', aborting"); | |
264 | ||
265 | ret = !regexec(&preg, file.c_str(), 0, 0, 0); | |
266 | regfree(&preg); | |
267 | ||
268 | return ret; | |
269 | } |