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 "opkg_download.h"
23 #include "opkg_message.h"
25 #include "sprintf_alloc.h"
27 #include "file_util.h"
28 #include "opkg_defines.h"
29 #include "libbb/libbb.h"
32 #include <curl/curl.h>
35 #if defined(HAVE_SSLCURL) || defined(HAVE_OPENSSL)
36 #include <openssl/conf.h>
37 #include <openssl/evp.h>
38 #include <openssl/err.h>
39 #include <openssl/ssl.h>
42 #if defined(HAVE_GPGME)
44 #elif defined(HAVE_OPENSSL)
45 #include <openssl/bio.h>
46 #include <openssl/objects.h>
47 #include <openssl/x509.h>
48 #include <openssl/pem.h>
49 #include <openssl/hmac.h>
52 #ifdef HAVE_PATHFINDER
53 #include "opkg_pathfinder.h"
56 #if defined(HAVE_OPENSSL) || defined(HAVE_SSLCURL)
57 static void openssl_init(void);
61 static X509_STORE *setup_verify(opkg_conf_t *conf, char *CAfile, char *CApath);
66 * Make curl an instance variable so we don't have to instanciate it
69 static CURL *curl = NULL;
70 static CURL *opkg_curl_init(opkg_conf_t *conf, curl_progress_func cb, void *data);
74 str_starts_with(const char *str, const char *prefix)
76 return (strncmp(str, prefix, strlen(prefix)) == 0);
79 int opkg_download(opkg_conf_t *conf, const char *src,
80 const char *dest_file_name, curl_progress_func cb, void *data)
84 char *src_basec = xstrdup(src);
85 char *src_base = basename(src_basec);
86 char *tmp_file_location;
88 opkg_message(conf,OPKG_NOTICE,"Downloading %s\n", src);
90 if (str_starts_with(src, "file:")) {
91 const char *file_src = src + 5;
92 opkg_message(conf,OPKG_INFO,"Copying %s to %s...", file_src, dest_file_name);
93 err = file_copy(file_src, dest_file_name);
94 opkg_message(conf,OPKG_INFO,"Done\n");
99 sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
100 err = unlink(tmp_file_location);
101 if (err && errno != ENOENT) {
102 opkg_message(conf,OPKG_ERROR, "%s: ERROR: failed to unlink %s: %s\n",
103 __FUNCTION__, tmp_file_location, strerror(errno));
104 free(tmp_file_location);
109 if (conf->http_proxy) {
110 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: http_proxy = %s\n", conf->http_proxy);
111 setenv("http_proxy", conf->http_proxy, 1);
113 if (conf->ftp_proxy) {
114 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: ftp_proxy = %s\n", conf->ftp_proxy);
115 setenv("ftp_proxy", conf->ftp_proxy, 1);
117 if (conf->no_proxy) {
118 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: no_proxy = %s\n", conf->no_proxy);
119 setenv("no_proxy", conf->no_proxy, 1);
124 FILE * file = fopen (tmp_file_location, "w");
126 curl = opkg_curl_init (conf, cb, data);
129 curl_easy_setopt (curl, CURLOPT_URL, src);
130 curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
132 res = curl_easy_perform (curl);
137 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
138 opkg_message(conf, OPKG_ERROR, "Failed to download %s. \nerror detail: %s\n", src, curl_easy_strerror(res));
139 free(tmp_file_location);
147 free(tmp_file_location);
159 if (conf->http_proxy || conf->ftp_proxy) {
164 argv[i++] = tmp_file_location;
170 opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, res);
171 free(tmp_file_location);
178 err = file_move(tmp_file_location, dest_file_name);
180 free(tmp_file_location);
186 static int opkg_download_cache(opkg_conf_t *conf, const char *src,
187 const char *dest_file_name, curl_progress_func cb, void *data)
189 char *cache_name = xstrdup(src);
190 char *cache_location, *p;
193 if (!conf->cache || str_starts_with(src, "file:")) {
194 err = opkg_download(conf, src, dest_file_name, cb, data);
198 for (p = cache_name; *p; p++)
200 *p = ','; /* looks nicer than | or # */
202 sprintf_alloc(&cache_location, "%s/%s", conf->cache, cache_name);
203 if (file_exists(cache_location))
204 opkg_message(conf, OPKG_NOTICE, "Copying %s\n", cache_location);
206 err = opkg_download(conf, src, cache_location, cb, data);
208 (void) unlink(cache_location);
213 err = file_copy(cache_location, dest_file_name);
217 free(cache_location);
223 int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
227 char *stripped_filename;
229 if (pkg->src == NULL) {
230 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
231 pkg->name, pkg->parent->name);
234 if (pkg->filename == NULL) {
235 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) does not have a valid filename field.\n",pkg->name, pkg->parent->name);
239 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
241 /* XXX: BUG: The pkg->filename might be something like
242 "../../foo.opk". While this is correct, and exactly what we
243 want to use to construct url above, here we actually need to
244 use just the filename part, without any directory. */
246 stripped_filename = strrchr(pkg->filename, '/');
247 if ( ! stripped_filename )
248 stripped_filename = pkg->filename;
250 sprintf_alloc(&pkg->local_filename, "%s/%s", dir, stripped_filename);
252 err = opkg_download_cache(conf, url, pkg->local_filename, NULL, NULL);
259 * Downloads file from url, installs in package database, return package name.
261 int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
268 if (str_starts_with(url, "http://")
269 || str_starts_with(url, "ftp://")) {
271 char *file_basec = xstrdup(url);
272 char *file_base = basename(file_basec);
274 sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
275 err = opkg_download(conf, url, tmp_file, NULL, NULL);
279 err = pkg_init_from_file(conf, pkg, tmp_file);
286 } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
287 || strcmp(&url[strlen(url) - 4], IPKG_PKG_EXTENSION) == 0
288 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
290 err = pkg_init_from_file(conf, pkg, url);
293 opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
294 pkg->provided_by_hand = 1;
302 if (!pkg->architecture) {
303 opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
307 pkg->dest = conf->default_dest;
308 pkg->state_want = SW_INSTALL;
309 pkg->state_flag |= SF_PREFER;
310 pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
319 opkg_verify_file (opkg_conf_t *conf, char *text_file, char *sig_file)
321 #if defined HAVE_GPGME
322 if (conf->check_signature == 0 )
326 gpgme_data_t sig, text, key;
327 gpgme_error_t err = -1;
328 gpgme_verify_result_t result;
330 char *trusted_path = NULL;
332 err = gpgme_new (&ctx);
337 sprintf_alloc(&trusted_path, "%s/%s", conf->offline_root, "/etc/opkg/trusted.gpg");
338 err = gpgme_data_new_from_file (&key, trusted_path, 1);
344 err = gpgme_op_import (ctx, key);
347 gpgme_data_release (key);
350 gpgme_data_release (key);
352 err = gpgme_data_new_from_file (&sig, sig_file, 1);
359 err = gpgme_data_new_from_file (&text, text_file, 1);
362 gpgme_data_release (sig);
367 err = gpgme_op_verify (ctx, sig, text, NULL);
369 result = gpgme_op_verify_result (ctx);
373 /* see if any of the signitures matched */
374 s = result->signatures;
377 status = gpg_err_code (s->status);
378 if (status == GPG_ERR_NO_ERROR)
384 gpgme_data_release (sig);
385 gpgme_data_release (text);
389 #elif defined HAVE_OPENSSL
390 X509_STORE *store = NULL;
392 BIO *in = NULL, *indata = NULL;
394 // Sig check failed by default !
399 // Set-up the key store
400 if(!(store = setup_verify(conf, conf->signature_ca_file, conf->signature_ca_path))){
401 opkg_message(conf, OPKG_ERROR,
402 "Can't open CA certificates\n");
403 goto verify_file_end;
406 // Open a BIO to read the sig file
407 if (!(in = BIO_new_file(sig_file, "rb"))){
408 opkg_message(conf, OPKG_ERROR,
409 "Can't open signature file %s\n", sig_file);
410 goto verify_file_end;
413 // Read the PKCS7 block contained in the sig file
414 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
416 opkg_message(conf, OPKG_ERROR,
417 "Can't read signature file (Corrupted ?)\n");
418 goto verify_file_end;
420 #if defined(HAVE_PATHFINDER)
421 if(conf->check_x509_path){
422 if(!pkcs7_pathfinder_verify_signers(p7)){
423 opkg_message(conf, OPKG_ERROR, "pkcs7_pathfinder_verify_signers: "
424 "Path verification failed\n");
425 goto verify_file_end;
430 // Open the Package file to authenticate
431 if (!(indata = BIO_new_file(text_file, "rb"))){
432 opkg_message(conf, OPKG_ERROR,
433 "Can't open file %s\n", text_file);
434 goto verify_file_end;
437 // Let's verify the autenticity !
438 if (PKCS7_verify(p7, NULL, store, indata, NULL, PKCS7_BINARY) != 1){
440 opkg_message(conf, OPKG_ERROR,
441 "Verification failure\n");
451 X509_STORE_free(store);
455 /* mute `unused variable' warnings. */
464 #if defined(HAVE_OPENSSL) || defined(HAVE_SSLCURL)
465 static void openssl_init(void){
469 OPENSSL_config(NULL);
470 OpenSSL_add_all_algorithms();
471 ERR_load_crypto_strings();
479 #if defined HAVE_OPENSSL
480 static X509_STORE *setup_verify(opkg_conf_t *conf, char *CAfile, char *CApath){
481 X509_STORE *store = NULL;
482 X509_LOOKUP *lookup = NULL;
484 if(!(store = X509_STORE_new())){
485 // Something bad is happening...
489 // adds the X509 file lookup method
490 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_file());
495 // Autenticating against one CA file
497 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
498 // Invalid CA => Bye bye
499 opkg_message(conf, OPKG_ERROR,
500 "Error loading file %s\n", CAfile);
504 X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
507 // Now look into CApath directory if supplied
508 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
514 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
515 opkg_message(conf, OPKG_ERROR,
516 "Error loading directory %s\n", CApath);
520 X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
529 X509_STORE_free(store);
537 void opkg_curl_cleanup(void){
539 curl_easy_cleanup (curl);
544 static CURL *opkg_curl_init(opkg_conf_t *conf, curl_progress_func cb, void *data){
547 curl = curl_easy_init();
552 if (conf->ssl_engine) {
554 /* use crypto engine */
555 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE, conf->ssl_engine) != CURLE_OK){
556 opkg_message(conf, OPKG_ERROR, "can't set crypto engine: '%s'\n",
562 /* set the crypto engine as default */
563 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT, 1L) != CURLE_OK){
564 opkg_message(conf, OPKG_ERROR, "can't set crypto engine as default\n");
571 /* cert & key can only be in PEM case in the same file */
572 if(conf->ssl_key_passwd){
573 if (curl_easy_setopt(curl, CURLOPT_SSLKEYPASSWD, conf->ssl_key_passwd) != CURLE_OK)
575 opkg_message(conf, OPKG_DEBUG, "Failed to set key password\n");
579 /* sets the client certificate and its type */
580 if(conf->ssl_cert_type){
581 if (curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, conf->ssl_cert_type) != CURLE_OK)
583 opkg_message(conf, OPKG_DEBUG, "Failed to set certificate format\n");
586 /* SSL cert name isn't mandatory */
588 curl_easy_setopt(curl, CURLOPT_SSLCERT, conf->ssl_cert);
591 /* sets the client key and its type */
592 if(conf->ssl_key_type){
593 if (curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, conf->ssl_key_type) != CURLE_OK)
595 opkg_message(conf, OPKG_DEBUG, "Failed to set key format\n");
599 if (curl_easy_setopt(curl, CURLOPT_SSLKEY, conf->ssl_key) != CURLE_OK)
601 opkg_message(conf, OPKG_DEBUG, "Failed to set key\n");
605 /* Should we verify the peer certificate ? */
606 if(conf->ssl_dont_verify_peer){
608 * CURLOPT_SSL_VERIFYPEER default is nonzero (curl => 7.10)
610 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
612 #ifdef HAVE_PATHFINDER
613 if(conf->check_x509_path){
614 if (curl_easy_setopt(curl, CURLOPT_SSL_CTX_FUNCTION, curl_ssl_ctx_function) != CURLE_OK){
615 opkg_message(conf, OPKG_DEBUG, "Failed to set ssl path verification callback\n");
617 curl_easy_setopt(curl, CURLOPT_SSL_CTX_DATA, NULL);
623 /* certification authority file and/or path */
624 if(conf->ssl_ca_file){
625 curl_easy_setopt(curl, CURLOPT_CAINFO, conf->ssl_ca_file);
627 if(conf->ssl_ca_path){
628 curl_easy_setopt(curl, CURLOPT_CAPATH, conf->ssl_ca_path);
632 curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
633 curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
634 if (conf->http_proxy || conf->ftp_proxy)
637 sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
639 curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
644 curl_easy_setopt (curl, CURLOPT_NOPROGRESS, (cb == NULL));
647 curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, data);
648 curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, cb);