1 /* vi: set noexpandtab sw=4 sts=4: */
2 /* opkg_download.c - the opkg package management system
6 Copyright (C) 2001 University of Southern California
7 Copyright (C) 2008 OpenMoko Inc
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.
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.
22 #include <curl/curl.h>
25 #if defined(HAVE_SSLCURL) || defined(HAVE_OPENSSL)
26 #include <openssl/conf.h>
27 #include <openssl/evp.h>
28 #include <openssl/err.h>
29 #include <openssl/ssl.h>
32 #if defined(HAVE_GPGME)
34 #elif defined(HAVE_OPENSSL)
35 #include <openssl/bio.h>
36 #include <openssl/objects.h>
37 #include <openssl/x509.h>
38 #include <openssl/pem.h>
39 #include <openssl/hmac.h>
43 #include "opkg_download.h"
44 #include "opkg_message.h"
46 #include "sprintf_alloc.h"
48 #include "file_util.h"
50 #include "opkg_defines.h"
51 #include "libbb/libbb.h"
53 #ifdef HAVE_PATHFINDER
54 #include "opkg_pathfinder.h"
57 #if defined(HAVE_OPENSSL) || defined(HAVE_SSLCURL)
58 static void openssl_init(void);
62 static X509_STORE *setup_verify(opkg_conf_t *conf, char *CAfile, char *CApath);
67 * Make curl an instance variable so we don't have to instanciate it
70 static CURL *curl = NULL;
71 static void opkg_curl_cleanup(void);
72 static CURL *opkg_curl_init(opkg_conf_t *conf, curl_progress_func cb, void *data);
75 int opkg_download(opkg_conf_t *conf, const char *src,
76 const char *dest_file_name, curl_progress_func cb, void *data)
80 char *src_basec = xstrdup(src);
81 char *src_base = basename(src_basec);
82 char *tmp_file_location;
84 opkg_message(conf,OPKG_NOTICE,"Downloading %s\n", src);
86 if (str_starts_with(src, "file:")) {
88 const char *file_src = src + 5;
89 opkg_message(conf,OPKG_INFO,"Copying %s to %s...", file_src, dest_file_name);
90 ret = file_copy(src + 5, dest_file_name);
91 opkg_message(conf,OPKG_INFO,"Done\n");
96 sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
97 err = unlink(tmp_file_location);
98 if (err && errno != ENOENT) {
99 opkg_message(conf,OPKG_ERROR, "%s: ERROR: failed to unlink %s: %s\n",
100 __FUNCTION__, tmp_file_location, strerror(errno));
101 free(tmp_file_location);
106 if (conf->http_proxy) {
107 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: http_proxy = %s\n", conf->http_proxy);
108 setenv("http_proxy", conf->http_proxy, 1);
110 if (conf->ftp_proxy) {
111 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: ftp_proxy = %s\n", conf->ftp_proxy);
112 setenv("ftp_proxy", conf->ftp_proxy, 1);
114 if (conf->no_proxy) {
115 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: no_proxy = %s\n", conf->no_proxy);
116 setenv("no_proxy", conf->no_proxy, 1);
121 FILE * file = fopen (tmp_file_location, "w");
123 curl = opkg_curl_init (conf, cb, data);
126 curl_easy_setopt (curl, CURLOPT_URL, src);
127 curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
129 res = curl_easy_perform (curl);
134 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
135 opkg_message(conf, OPKG_ERROR, "Failed to download %s. \nerror detail: %s\n", src, curl_easy_strerror(res));
136 free(tmp_file_location);
144 free(tmp_file_location);
153 wgetopts = getenv("OPKG_WGETOPTS");
154 sprintf_alloc(&wgetcmd, "wget -q %s%s -O \"%s\" \"%s\"",
155 (conf->http_proxy || conf->ftp_proxy) ? "-Y on " : "",
156 (wgetopts!=NULL) ? wgetopts : "",
157 tmp_file_location, src);
158 opkg_message(conf, OPKG_INFO, "Executing: %s\n", wgetcmd);
159 res = xsystem(wgetcmd);
162 opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, res);
163 free(tmp_file_location);
170 err = file_move(tmp_file_location, dest_file_name);
172 free(tmp_file_location);
182 static int opkg_download_cache(opkg_conf_t *conf, const char *src,
183 const char *dest_file_name, curl_progress_func cb, void *data)
185 char *cache_name = xstrdup(src);
186 char *cache_location, *p;
189 if (!conf->cache || str_starts_with(src, "file:")) {
190 err = opkg_download(conf, src, dest_file_name, cb, data);
194 for (p = cache_name; *p; p++)
196 *p = ','; /* looks nicer than | or # */
198 sprintf_alloc(&cache_location, "%s/%s", conf->cache, cache_name);
199 if (file_exists(cache_location))
200 opkg_message(conf, OPKG_NOTICE, "Copying %s\n", cache_location);
202 err = opkg_download(conf, src, cache_location, cb, data);
204 (void) unlink(cache_location);
209 err = file_copy(cache_location, dest_file_name);
213 free(cache_location);
219 int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
223 char *stripped_filename;
225 if (pkg->src == NULL) {
226 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
227 pkg->name, pkg->parent->name);
230 if (pkg->filename == NULL) {
231 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) does not have a valid filename field.\n",pkg->name, pkg->parent->name);
235 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
237 /* XXX: BUG: The pkg->filename might be something like
238 "../../foo.opk". While this is correct, and exactly what we
239 want to use to construct url above, here we actually need to
240 use just the filename part, without any directory. */
242 stripped_filename = strrchr(pkg->filename, '/');
243 if ( ! stripped_filename )
244 stripped_filename = pkg->filename;
246 sprintf_alloc(&pkg->local_filename, "%s/%s", dir, stripped_filename);
248 err = opkg_download_cache(conf, url, pkg->local_filename, NULL, NULL);
255 * Downloads file from url, installs in package database, return package name.
257 int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
264 if (str_starts_with(url, "http://")
265 || str_starts_with(url, "ftp://")) {
267 char *file_basec = xstrdup(url);
268 char *file_base = basename(file_basec);
270 sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
271 err = opkg_download(conf, url, tmp_file, NULL, NULL);
275 err = pkg_init_from_file(pkg, tmp_file);
282 } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
283 || strcmp(&url[strlen(url) - 4], IPKG_PKG_EXTENSION) == 0
284 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
286 err = pkg_init_from_file(pkg, url);
289 opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
290 pkg->provided_by_hand = 1;
298 if (!pkg->architecture) {
299 opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
303 pkg->dest = conf->default_dest;
304 pkg->state_want = SW_INSTALL;
305 pkg->state_flag |= SF_PREFER;
306 pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
315 opkg_verify_file (opkg_conf_t *conf, char *text_file, char *sig_file)
317 #if defined HAVE_GPGME
318 if (conf->check_signature == 0 )
322 gpgme_data_t sig, text, key;
323 gpgme_error_t err = -1;
324 gpgme_verify_result_t result;
326 char *trusted_path = NULL;
328 err = gpgme_new (&ctx);
333 sprintf_alloc(&trusted_path, "%s/%s", conf->offline_root, "/etc/opkg/trusted.gpg");
334 err = gpgme_data_new_from_file (&key, trusted_path, 1);
340 err = gpgme_op_import (ctx, key);
343 gpgme_data_release (key);
346 gpgme_data_release (key);
348 err = gpgme_data_new_from_file (&sig, sig_file, 1);
355 err = gpgme_data_new_from_file (&text, text_file, 1);
358 gpgme_data_release (sig);
363 err = gpgme_op_verify (ctx, sig, text, NULL);
365 result = gpgme_op_verify_result (ctx);
369 /* see if any of the signitures matched */
370 s = result->signatures;
373 status = gpg_err_code (s->status);
374 if (status == GPG_ERR_NO_ERROR)
380 gpgme_data_release (sig);
381 gpgme_data_release (text);
385 #elif defined HAVE_OPENSSL
386 X509_STORE *store = NULL;
388 BIO *in = NULL, *indata = NULL;
390 // Sig check failed by default !
395 // Set-up the key store
396 if(!(store = setup_verify(conf, conf->signature_ca_file, conf->signature_ca_path))){
397 opkg_message(conf, OPKG_ERROR,
398 "Can't open CA certificates\n");
399 goto verify_file_end;
402 // Open a BIO to read the sig file
403 if (!(in = BIO_new_file(sig_file, "rb"))){
404 opkg_message(conf, OPKG_ERROR,
405 "Can't open signature file %s\n", sig_file);
406 goto verify_file_end;
409 // Read the PKCS7 block contained in the sig file
410 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
412 opkg_message(conf, OPKG_ERROR,
413 "Can't read signature file (Corrupted ?)\n");
414 goto verify_file_end;
416 #if defined(HAVE_PATHFINDER)
417 if(conf->check_x509_path){
418 if(!pkcs7_pathfinder_verify_signers(p7)){
419 opkg_message(conf, OPKG_ERROR, "pkcs7_pathfinder_verify_signers: "
420 "Path verification failed\n");
421 goto verify_file_end;
426 // Open the Package file to authenticate
427 if (!(indata = BIO_new_file(text_file, "rb"))){
428 opkg_message(conf, OPKG_ERROR,
429 "Can't open file %s\n", text_file);
430 goto verify_file_end;
433 // Let's verify the autenticity !
434 if (PKCS7_verify(p7, NULL, store, indata, NULL, PKCS7_BINARY) != 1){
436 opkg_message(conf, OPKG_ERROR,
437 "Verification failure\n");
447 X509_STORE_free(store);
451 /* mute `unused variable' warnings. */
460 #if defined(HAVE_OPENSSL) || defined(HAVE_SSLCURL)
461 static void openssl_init(void){
465 OPENSSL_config(NULL);
466 OpenSSL_add_all_algorithms();
467 ERR_load_crypto_strings();
475 #if defined HAVE_OPENSSL
476 static X509_STORE *setup_verify(opkg_conf_t *conf, char *CAfile, char *CApath){
477 X509_STORE *store = NULL;
478 X509_LOOKUP *lookup = NULL;
480 if(!(store = X509_STORE_new())){
481 // Something bad is happening...
485 // adds the X509 file lookup method
486 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_file());
491 // Autenticating against one CA file
493 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
494 // Invalid CA => Bye bye
495 opkg_message(conf, OPKG_ERROR,
496 "Error loading file %s\n", CAfile);
500 X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
503 // Now look into CApath directory if supplied
504 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
510 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
511 opkg_message(conf, OPKG_ERROR,
512 "Error loading directory %s\n", CApath);
516 X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
525 X509_STORE_free(store);
533 static void opkg_curl_cleanup(void){
535 curl_easy_cleanup (curl);
540 static CURL *opkg_curl_init(opkg_conf_t *conf, curl_progress_func cb, void *data){
543 curl = curl_easy_init();
548 if (conf->ssl_engine) {
550 /* use crypto engine */
551 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE, conf->ssl_engine) != CURLE_OK){
552 opkg_message(conf, OPKG_ERROR, "can't set crypto engine: '%s'\n",
558 /* set the crypto engine as default */
559 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT, 1L) != CURLE_OK){
560 opkg_message(conf, OPKG_ERROR, "can't set crypto engine as default\n");
567 /* cert & key can only be in PEM case in the same file */
568 if(conf->ssl_key_passwd){
569 if (curl_easy_setopt(curl, CURLOPT_SSLKEYPASSWD, conf->ssl_key_passwd) != CURLE_OK)
571 opkg_message(conf, OPKG_DEBUG, "Failed to set key password\n");
575 /* sets the client certificate and its type */
576 if(conf->ssl_cert_type){
577 if (curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, conf->ssl_cert_type) != CURLE_OK)
579 opkg_message(conf, OPKG_DEBUG, "Failed to set certificate format\n");
582 /* SSL cert name isn't mandatory */
584 curl_easy_setopt(curl, CURLOPT_SSLCERT, conf->ssl_cert);
587 /* sets the client key and its type */
588 if(conf->ssl_key_type){
589 if (curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, conf->ssl_key_type) != CURLE_OK)
591 opkg_message(conf, OPKG_DEBUG, "Failed to set key format\n");
595 if (curl_easy_setopt(curl, CURLOPT_SSLKEY, conf->ssl_key) != CURLE_OK)
597 opkg_message(conf, OPKG_DEBUG, "Failed to set key\n");
601 /* Should we verify the peer certificate ? */
602 if(conf->ssl_dont_verify_peer){
604 * CURLOPT_SSL_VERIFYPEER default is nonzero (curl => 7.10)
606 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
608 #ifdef HAVE_PATHFINDER
609 if(conf->check_x509_path){
610 if (curl_easy_setopt(curl, CURLOPT_SSL_CTX_FUNCTION, curl_ssl_ctx_function) != CURLE_OK){
611 opkg_message(conf, OPKG_DEBUG, "Failed to set ssl path verification callback\n");
613 curl_easy_setopt(curl, CURLOPT_SSL_CTX_DATA, NULL);
619 /* certification authority file and/or path */
620 if(conf->ssl_ca_file){
621 curl_easy_setopt(curl, CURLOPT_CAINFO, conf->ssl_ca_file);
623 if(conf->ssl_ca_path){
624 curl_easy_setopt(curl, CURLOPT_CAPATH, conf->ssl_ca_path);
628 curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
629 curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
630 if (conf->http_proxy || conf->ftp_proxy)
633 sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
635 curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
639 /* add curl cleanup callback */
640 if(!atexit(opkg_curl_cleanup)){
641 opkg_message(conf,OPKG_DEBUG, "Failed to register atexit curl cleanup function\n");
646 curl_easy_setopt (curl, CURLOPT_NOPROGRESS, (cb == NULL));
649 curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, data);
650 curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, cb);