1 /* vi: set noexpandtab sw=4 sts=4: */
2 /* opkg_download.c - the opkg package management system
3
4 Carl D. Worth
5
6 Copyright (C) 2001 University of Southern California
7 Copyright (C) 2008 OpenMoko Inc
8
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU General Public License as
11 published by the Free Software Foundation; either version 2, or (at
12 your option) any later version.
13
14 This program is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
18 */
19
20 #include <sys/wait.h>
21 #include <stdio.h>
22 #include <unistd.h>
23 #include <libgen.h>
24
25 #include "opkg_download.h"
26 #include "opkg_message.h"
27
28 #include "sprintf_alloc.h"
29 #include "xsystem.h"
30 #include "file_util.h"
31 #include "opkg_defines.h"
32 #include "libbb/libbb.h"
33
str_starts_with(const char * str,const char * prefix)34 static int str_starts_with(const char *str, const char *prefix)
35 {
36 return (strncmp(str, prefix, strlen(prefix)) == 0);
37 }
38
39 int
opkg_download(const char * src,const char * dest_file_name,const short hide_error)40 opkg_download(const char *src, const char *dest_file_name,
41 const short hide_error)
42 {
43 int err = 0;
44
45 char *src_basec = xstrdup(src);
46 char *src_base = basename(src_basec);
47 char *tmp_file_location;
48
49 opkg_msg(NOTICE, "Downloading %s\n", src);
50
51 if (str_starts_with(src, "file:")) {
52 char *file_src = urldecode_path(src + 5);
53 opkg_msg(INFO, "Copying %s to %s...", file_src, dest_file_name);
54 err = file_copy(file_src, dest_file_name);
55 opkg_msg(INFO, "Done.\n");
56 free(src_basec);
57 free(file_src);
58 return err;
59 }
60
61 sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
62 free(src_basec);
63 err = unlink(tmp_file_location);
64 if (err && errno != ENOENT) {
65 opkg_perror(ERROR, "Failed to unlink %s", tmp_file_location);
66 free(tmp_file_location);
67 return -1;
68 }
69
70 if (conf->http_proxy) {
71 opkg_msg(DEBUG,
72 "Setting environment variable: http_proxy = %s.\n",
73 conf->http_proxy);
74 setenv("http_proxy", conf->http_proxy, 1);
75 }
76 if (conf->ftp_proxy) {
77 opkg_msg(DEBUG,
78 "Setting environment variable: ftp_proxy = %s.\n",
79 conf->ftp_proxy);
80 setenv("ftp_proxy", conf->ftp_proxy, 1);
81 }
82 if (conf->no_proxy) {
83 opkg_msg(DEBUG,
84 "Setting environment variable: no_proxy = %s.\n",
85 conf->no_proxy);
86 setenv("no_proxy", conf->no_proxy, 1);
87 }
88
89 {
90 int res;
91 const char *argv[11];
92 int i = 0;
93
94 argv[i++] = "wget";
95 argv[i++] = "-q";
96 if (conf->no_check_certificate) {
97 argv[i++] = "--no-check-certificate";
98 }
99 if (conf->http_timeout) {
100 argv[i++] = "--timeout";
101 argv[i++] = conf->http_timeout;
102 }
103 if (conf->http_proxy || conf->ftp_proxy) {
104 argv[i++] = "-Y";
105 argv[i++] = "on";
106 }
107 argv[i++] = "-O";
108 argv[i++] = tmp_file_location;
109 argv[i++] = src;
110 argv[i++] = NULL;
111 res = xsystem(argv);
112
113 if (res) {
114 opkg_msg(ERROR,
115 "Failed to download %s, wget returned %d.\n",
116 src, res);
117 if (res == 4)
118 opkg_msg(ERROR,
119 "Check your network settings and connectivity.\n\n");
120 free(tmp_file_location);
121 return -1;
122 }
123 }
124
125 err = file_move(tmp_file_location, dest_file_name);
126
127 free(tmp_file_location);
128
129 return err;
130 }
131
132 static int
opkg_download_cache(const char * src,const char * dest_file_name)133 opkg_download_cache(const char *src, const char *dest_file_name)
134 {
135 char *cache_name = xstrdup(src);
136 char *cache_location, *p;
137 int err = 0;
138
139 if (!conf->cache || str_starts_with(src, "file:")) {
140 err = opkg_download(src, dest_file_name, 0);
141 goto out1;
142 }
143
144 if (!file_is_dir(conf->cache)) {
145 opkg_msg(ERROR, "%s is not a directory.\n", conf->cache);
146 err = 1;
147 goto out1;
148 }
149
150 for (p = cache_name; *p; p++)
151 if (*p == '/')
152 *p = ','; /* looks nicer than | or # */
153
154 sprintf_alloc(&cache_location, "%s/%s", conf->cache, cache_name);
155 if (file_exists(cache_location))
156 opkg_msg(NOTICE, "Copying %s.\n", cache_location);
157 else {
158 /* cache file with funky name not found, try simple name */
159 free(cache_name);
160 char *filename = strrchr(dest_file_name, '/');
161 if (filename)
162 cache_name = xstrdup(filename + 1); // strip leading '/'
163 else
164 cache_name = xstrdup(dest_file_name);
165 free(cache_location);
166 sprintf_alloc(&cache_location, "%s/%s", conf->cache,
167 cache_name);
168 if (file_exists(cache_location))
169 opkg_msg(NOTICE, "Copying %s.\n", cache_location);
170 else {
171 err = opkg_download(src, cache_location, 0);
172 if (err) {
173 (void)unlink(cache_location);
174 goto out2;
175 }
176 }
177 }
178
179 err = file_copy(cache_location, dest_file_name);
180
181 out2:
182 free(cache_location);
183 out1:
184 free(cache_name);
185 return err;
186 }
187
opkg_download_pkg(pkg_t * pkg,const char * dir)188 int opkg_download_pkg(pkg_t * pkg, const char *dir)
189 {
190 int err;
191 char *url;
192 char *local_filename;
193 char *stripped_filename;
194 char *urlencoded_path;
195 char *filename;
196
197 if (pkg->src == NULL) {
198 opkg_msg(ERROR,
199 "Package %s is not available from any configured src.\n",
200 pkg->name);
201 return -1;
202 }
203
204 filename = pkg_get_string(pkg, PKG_FILENAME);
205
206 if (filename == NULL) {
207 opkg_msg(ERROR,
208 "Package %s does not have a valid filename field.\n",
209 pkg->name);
210 return -1;
211 }
212
213 urlencoded_path = urlencode_path(filename);
214 sprintf_alloc(&url, "%s/%s", pkg->src->value, urlencoded_path);
215 free(urlencoded_path);
216
217 /* The filename might be something like
218 "../../foo.opk". While this is correct, and exactly what we
219 want to use to construct url above, here we actually need to
220 use just the filename part, without any directory. */
221
222 stripped_filename = strrchr(filename, '/');
223 if (!stripped_filename)
224 stripped_filename = filename;
225
226 sprintf_alloc(&local_filename, "%s/%s", dir, stripped_filename);
227 pkg_set_string(pkg, PKG_LOCAL_FILENAME, local_filename);
228
229 err = opkg_download_cache(url, local_filename);
230 free(url);
231
232 return err;
233 }
234
235 /*
236 * Downloads file from url, installs in package database, return package name.
237 */
opkg_prepare_url_for_install(const char * url,char ** namep)238 int opkg_prepare_url_for_install(const char *url, char **namep)
239 {
240 int err = 0;
241 pkg_t *pkg;
242 abstract_pkg_t *ab_pkg;
243
244 pkg = pkg_new();
245
246 if (str_starts_with(url, "http://")
247 || str_starts_with(url, "ftp://")) {
248 char *tmp_file;
249 char *file_basec = xstrdup(url);
250 char *file_base = basename(file_basec);
251
252 sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
253 err = opkg_download(url, tmp_file, 0);
254 if (err)
255 return err;
256
257 err = pkg_init_from_file(pkg, tmp_file);
258 if (err)
259 return err;
260
261 free(tmp_file);
262 free(file_basec);
263
264 } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
265 || strcmp(&url[strlen(url) - 4], IPKG_PKG_EXTENSION) == 0
266 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
267
268 err = pkg_init_from_file(pkg, url);
269 if (err)
270 return err;
271 opkg_msg(DEBUG2, "Package %s provided by hand (%s).\n",
272 pkg->name, pkg_get_string(pkg, PKG_LOCAL_FILENAME));
273 pkg->provided_by_hand = 1;
274
275 } else {
276 ab_pkg = ensure_abstract_pkg_by_name(url);
277
278 if (!(ab_pkg->state_flag & SF_NEED_DETAIL)) {
279 opkg_msg(DEBUG, "applying abpkg flag to %s\n", ab_pkg->name);
280 ab_pkg->state_flag |= SF_NEED_DETAIL;
281 }
282
283 pkg_deinit(pkg);
284 free(pkg);
285 return 0;
286 }
287
288 pkg->dest = conf->default_dest;
289 pkg->state_want = SW_INSTALL;
290 pkg->state_flag |= SF_PREFER;
291 hash_insert_pkg(pkg, 1);
292
293 if (namep) {
294 *namep = xstrdup(pkg->name);
295 }
296 return 0;
297 }
298
opkg_verify_file(char * text_file,char * sig_file)299 int opkg_verify_file(char *text_file, char *sig_file)
300 {
301 #if defined HAVE_USIGN
302 int status = -1;
303 int pid;
304
305 if (conf->check_signature == 0)
306 return 0;
307
308 pid = fork();
309 if (pid < 0)
310 return -1;
311
312 if (!pid) {
313 execl("/usr/sbin/opkg-key", "opkg-key", "verify", sig_file,
314 text_file, NULL);
315 exit(255);
316 }
317
318 waitpid(pid, &status, 0);
319 if (!WIFEXITED(status) || WEXITSTATUS(status))
320 return -1;
321
322 return 0;
323 #else
324 /* mute `unused variable' warnings. */
325 (void)sig_file;
326 (void)text_file;
327 (void)conf;
328 return 0;
329 #endif
330 }
331