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);
122 FILE * file = fopen (tmp_file_location, "w");
124 curl = opkg_curl_init (conf, cb, data);
127 curl_easy_setopt (curl, CURLOPT_URL, src);
128 curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
130 res = curl_easy_perform (curl);
135 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
136 opkg_message(conf, OPKG_ERROR, "Failed to download %s. \nerror detail: %s\n", src, curl_easy_strerror(res));
137 free(tmp_file_location);
145 free(tmp_file_location);
154 wgetopts = getenv("OPKG_WGETOPTS");
155 sprintf_alloc(&wgetcmd, "wget -q %s%s -O \"%s\" \"%s\"",
156 (conf->http_proxy || conf->ftp_proxy) ? "-Y on " : "",
157 (wgetopts!=NULL) ? wgetopts : "",
158 tmp_file_location, src);
159 opkg_message(conf, OPKG_INFO, "Executing: %s\n", wgetcmd);
160 res = xsystem(wgetcmd);
163 opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, res);
164 free(tmp_file_location);
171 err = file_move(tmp_file_location, dest_file_name);
173 free(tmp_file_location);
183 static int opkg_download_cache(opkg_conf_t *conf, const char *src,
184 const char *dest_file_name, curl_progress_func cb, void *data)
186 char *cache_name = xstrdup(src);
187 char *cache_location, *p;
190 if (!conf->cache || str_starts_with(src, "file:")) {
191 err = opkg_download(conf, src, dest_file_name, cb, data);
195 for (p = cache_name; *p; p++)
197 *p = ','; /* looks nicer than | or # */
199 sprintf_alloc(&cache_location, "%s/%s", conf->cache, cache_name);
200 if (file_exists(cache_location))
201 opkg_message(conf, OPKG_NOTICE, "Copying %s\n", cache_location);
203 err = opkg_download(conf, src, cache_location, cb, data);
205 (void) unlink(cache_location);
210 err = file_copy(cache_location, dest_file_name);
214 free(cache_location);
220 int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
224 char *stripped_filename;
226 if (pkg->src == NULL) {
227 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
228 pkg->name, pkg->parent->name);
231 if (pkg->filename == NULL) {
232 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) does not have a valid filename field.\n",pkg->name, pkg->parent->name);
236 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
238 /* XXX: BUG: The pkg->filename might be something like
239 "../../foo.opk". While this is correct, and exactly what we
240 want to use to construct url above, here we actually need to
241 use just the filename part, without any directory. */
243 stripped_filename = strrchr(pkg->filename, '/');
244 if ( ! stripped_filename )
245 stripped_filename = pkg->filename;
247 sprintf_alloc(&pkg->local_filename, "%s/%s", dir, stripped_filename);
249 err = opkg_download_cache(conf, url, pkg->local_filename, NULL, NULL);
256 * Downloads file from url, installs in package database, return package name.
258 int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
265 if (str_starts_with(url, "http://")
266 || str_starts_with(url, "ftp://")) {
268 char *file_basec = xstrdup(url);
269 char *file_base = basename(file_basec);
271 sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
272 err = opkg_download(conf, url, tmp_file, NULL, NULL);
276 err = pkg_init_from_file(pkg, tmp_file);
283 } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
284 || strcmp(&url[strlen(url) - 4], IPKG_PKG_EXTENSION) == 0
285 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
287 err = pkg_init_from_file(pkg, url);
290 opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
291 pkg->provided_by_hand = 1;
299 if (!pkg->architecture) {
300 opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
304 pkg->dest = conf->default_dest;
305 pkg->state_want = SW_INSTALL;
306 pkg->state_flag |= SF_PREFER;
307 pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
310 *namep = xstrdup(pkg->name);
316 opkg_verify_file (opkg_conf_t *conf, char *text_file, char *sig_file)
318 #if defined HAVE_GPGME
319 if (conf->check_signature == 0 )
323 gpgme_data_t sig, text, key;
324 gpgme_error_t err = -1;
325 gpgme_verify_result_t result;
327 char *trusted_path = NULL;
329 err = gpgme_new (&ctx);
334 sprintf_alloc(&trusted_path, "%s/%s", conf->offline_root, "/etc/opkg/trusted.gpg");
335 err = gpgme_data_new_from_file (&key, trusted_path, 1);
341 err = gpgme_op_import (ctx, key);
344 gpgme_data_release (key);
347 gpgme_data_release (key);
349 err = gpgme_data_new_from_file (&sig, sig_file, 1);
356 err = gpgme_data_new_from_file (&text, text_file, 1);
359 gpgme_data_release (sig);
364 err = gpgme_op_verify (ctx, sig, text, NULL);
366 result = gpgme_op_verify_result (ctx);
370 /* see if any of the signitures matched */
371 s = result->signatures;
374 status = gpg_err_code (s->status);
375 if (status == GPG_ERR_NO_ERROR)
381 gpgme_data_release (sig);
382 gpgme_data_release (text);
386 #elif defined HAVE_OPENSSL
387 X509_STORE *store = NULL;
389 BIO *in = NULL, *indata = NULL;
391 // Sig check failed by default !
396 // Set-up the key store
397 if(!(store = setup_verify(conf, conf->signature_ca_file, conf->signature_ca_path))){
398 opkg_message(conf, OPKG_ERROR,
399 "Can't open CA certificates\n");
400 goto verify_file_end;
403 // Open a BIO to read the sig file
404 if (!(in = BIO_new_file(sig_file, "rb"))){
405 opkg_message(conf, OPKG_ERROR,
406 "Can't open signature file %s\n", sig_file);
407 goto verify_file_end;
410 // Read the PKCS7 block contained in the sig file
411 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
413 opkg_message(conf, OPKG_ERROR,
414 "Can't read signature file (Corrupted ?)\n");
415 goto verify_file_end;
417 #if defined(HAVE_PATHFINDER)
418 if(conf->check_x509_path){
419 if(!pkcs7_pathfinder_verify_signers(p7)){
420 opkg_message(conf, OPKG_ERROR, "pkcs7_pathfinder_verify_signers: "
421 "Path verification failed\n");
422 goto verify_file_end;
427 // Open the Package file to authenticate
428 if (!(indata = BIO_new_file(text_file, "rb"))){
429 opkg_message(conf, OPKG_ERROR,
430 "Can't open file %s\n", text_file);
431 goto verify_file_end;
434 // Let's verify the autenticity !
435 if (PKCS7_verify(p7, NULL, store, indata, NULL, PKCS7_BINARY) != 1){
437 opkg_message(conf, OPKG_ERROR,
438 "Verification failure\n");
448 X509_STORE_free(store);
452 /* mute `unused variable' warnings. */
461 #if defined(HAVE_OPENSSL) || defined(HAVE_SSLCURL)
462 static void openssl_init(void){
466 OPENSSL_config(NULL);
467 OpenSSL_add_all_algorithms();
468 ERR_load_crypto_strings();
476 #if defined HAVE_OPENSSL
477 static X509_STORE *setup_verify(opkg_conf_t *conf, char *CAfile, char *CApath){
478 X509_STORE *store = NULL;
479 X509_LOOKUP *lookup = NULL;
481 if(!(store = X509_STORE_new())){
482 // Something bad is happening...
486 // adds the X509 file lookup method
487 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_file());
492 // Autenticating against one CA file
494 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
495 // Invalid CA => Bye bye
496 opkg_message(conf, OPKG_ERROR,
497 "Error loading file %s\n", CAfile);
501 X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
504 // Now look into CApath directory if supplied
505 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
511 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
512 opkg_message(conf, OPKG_ERROR,
513 "Error loading directory %s\n", CApath);
517 X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
526 X509_STORE_free(store);
534 static void opkg_curl_cleanup(void){
536 curl_easy_cleanup (curl);
541 static CURL *opkg_curl_init(opkg_conf_t *conf, curl_progress_func cb, void *data){
544 curl = curl_easy_init();
549 if (conf->ssl_engine) {
551 /* use crypto engine */
552 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE, conf->ssl_engine) != CURLE_OK){
553 opkg_message(conf, OPKG_ERROR, "can't set crypto engine: '%s'\n",
559 /* set the crypto engine as default */
560 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT, 1L) != CURLE_OK){
561 opkg_message(conf, OPKG_ERROR, "can't set crypto engine as default\n");
568 /* cert & key can only be in PEM case in the same file */
569 if(conf->ssl_key_passwd){
570 if (curl_easy_setopt(curl, CURLOPT_SSLKEYPASSWD, conf->ssl_key_passwd) != CURLE_OK)
572 opkg_message(conf, OPKG_DEBUG, "Failed to set key password\n");
576 /* sets the client certificate and its type */
577 if(conf->ssl_cert_type){
578 if (curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, conf->ssl_cert_type) != CURLE_OK)
580 opkg_message(conf, OPKG_DEBUG, "Failed to set certificate format\n");
583 /* SSL cert name isn't mandatory */
585 curl_easy_setopt(curl, CURLOPT_SSLCERT, conf->ssl_cert);
588 /* sets the client key and its type */
589 if(conf->ssl_key_type){
590 if (curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, conf->ssl_key_type) != CURLE_OK)
592 opkg_message(conf, OPKG_DEBUG, "Failed to set key format\n");
596 if (curl_easy_setopt(curl, CURLOPT_SSLKEY, conf->ssl_key) != CURLE_OK)
598 opkg_message(conf, OPKG_DEBUG, "Failed to set key\n");
602 /* Should we verify the peer certificate ? */
603 if(conf->ssl_dont_verify_peer){
605 * CURLOPT_SSL_VERIFYPEER default is nonzero (curl => 7.10)
607 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
609 #ifdef HAVE_PATHFINDER
610 if(conf->check_x509_path){
611 if (curl_easy_setopt(curl, CURLOPT_SSL_CTX_FUNCTION, curl_ssl_ctx_function) != CURLE_OK){
612 opkg_message(conf, OPKG_DEBUG, "Failed to set ssl path verification callback\n");
614 curl_easy_setopt(curl, CURLOPT_SSL_CTX_DATA, NULL);
620 /* certification authority file and/or path */
621 if(conf->ssl_ca_file){
622 curl_easy_setopt(curl, CURLOPT_CAINFO, conf->ssl_ca_file);
624 if(conf->ssl_ca_path){
625 curl_easy_setopt(curl, CURLOPT_CAPATH, conf->ssl_ca_path);
629 curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
630 curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
631 if (conf->http_proxy || conf->ftp_proxy)
634 sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
636 curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
640 /* add curl cleanup callback */
641 if(!atexit(opkg_curl_cleanup)){
642 opkg_message(conf,OPKG_DEBUG, "Failed to register atexit curl cleanup function\n");
647 curl_easy_setopt (curl, CURLOPT_NOPROGRESS, (cb == NULL));
650 curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, data);
651 curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, cb);