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"
49 #include "opkg_defines.h"
50 #include "libbb/libbb.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:")) {
92 const char *file_src = src + 5;
93 opkg_message(conf,OPKG_INFO,"Copying %s to %s...", file_src, dest_file_name);
94 ret = file_copy(src + 5, dest_file_name);
95 opkg_message(conf,OPKG_INFO,"Done\n");
100 sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
101 err = unlink(tmp_file_location);
102 if (err && errno != ENOENT) {
103 opkg_message(conf,OPKG_ERROR, "%s: ERROR: failed to unlink %s: %s\n",
104 __FUNCTION__, tmp_file_location, strerror(errno));
105 free(tmp_file_location);
110 if (conf->http_proxy) {
111 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: http_proxy = %s\n", conf->http_proxy);
112 setenv("http_proxy", conf->http_proxy, 1);
114 if (conf->ftp_proxy) {
115 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: ftp_proxy = %s\n", conf->ftp_proxy);
116 setenv("ftp_proxy", conf->ftp_proxy, 1);
118 if (conf->no_proxy) {
119 opkg_message(conf,OPKG_DEBUG,"Setting environment variable: no_proxy = %s\n", conf->no_proxy);
120 setenv("no_proxy", conf->no_proxy, 1);
125 FILE * file = fopen (tmp_file_location, "w");
127 curl = opkg_curl_init (conf, cb, data);
130 curl_easy_setopt (curl, CURLOPT_URL, src);
131 curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
133 res = curl_easy_perform (curl);
138 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
139 opkg_message(conf, OPKG_ERROR, "Failed to download %s. \nerror detail: %s\n", src, curl_easy_strerror(res));
140 free(tmp_file_location);
148 free(tmp_file_location);
160 if (conf->http_proxy || conf->ftp_proxy) {
165 argv[i++] = tmp_file_location;
171 opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, res);
172 free(tmp_file_location);
179 err = file_move(tmp_file_location, dest_file_name);
181 free(tmp_file_location);
191 static int opkg_download_cache(opkg_conf_t *conf, const char *src,
192 const char *dest_file_name, curl_progress_func cb, void *data)
194 char *cache_name = xstrdup(src);
195 char *cache_location, *p;
198 if (!conf->cache || str_starts_with(src, "file:")) {
199 err = opkg_download(conf, src, dest_file_name, cb, data);
203 for (p = cache_name; *p; p++)
205 *p = ','; /* looks nicer than | or # */
207 sprintf_alloc(&cache_location, "%s/%s", conf->cache, cache_name);
208 if (file_exists(cache_location))
209 opkg_message(conf, OPKG_NOTICE, "Copying %s\n", cache_location);
211 err = opkg_download(conf, src, cache_location, cb, data);
213 (void) unlink(cache_location);
218 err = file_copy(cache_location, dest_file_name);
222 free(cache_location);
228 int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
232 char *stripped_filename;
234 if (pkg->src == NULL) {
235 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
236 pkg->name, pkg->parent->name);
239 if (pkg->filename == NULL) {
240 opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) does not have a valid filename field.\n",pkg->name, pkg->parent->name);
244 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
246 /* XXX: BUG: The pkg->filename might be something like
247 "../../foo.opk". While this is correct, and exactly what we
248 want to use to construct url above, here we actually need to
249 use just the filename part, without any directory. */
251 stripped_filename = strrchr(pkg->filename, '/');
252 if ( ! stripped_filename )
253 stripped_filename = pkg->filename;
255 sprintf_alloc(&pkg->local_filename, "%s/%s", dir, stripped_filename);
257 err = opkg_download_cache(conf, url, pkg->local_filename, NULL, NULL);
264 * Downloads file from url, installs in package database, return package name.
266 int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
273 if (str_starts_with(url, "http://")
274 || str_starts_with(url, "ftp://")) {
276 char *file_basec = xstrdup(url);
277 char *file_base = basename(file_basec);
279 sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
280 err = opkg_download(conf, url, tmp_file, NULL, NULL);
284 err = pkg_init_from_file(conf, pkg, tmp_file);
291 } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
292 || strcmp(&url[strlen(url) - 4], IPKG_PKG_EXTENSION) == 0
293 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
295 err = pkg_init_from_file(conf, pkg, url);
298 opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
299 pkg->provided_by_hand = 1;
307 if (!pkg->architecture) {
308 opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
312 pkg->dest = conf->default_dest;
313 pkg->state_want = SW_INSTALL;
314 pkg->state_flag |= SF_PREFER;
315 pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
324 opkg_verify_file (opkg_conf_t *conf, char *text_file, char *sig_file)
326 #if defined HAVE_GPGME
327 if (conf->check_signature == 0 )
331 gpgme_data_t sig, text, key;
332 gpgme_error_t err = -1;
333 gpgme_verify_result_t result;
335 char *trusted_path = NULL;
337 err = gpgme_new (&ctx);
342 sprintf_alloc(&trusted_path, "%s/%s", conf->offline_root, "/etc/opkg/trusted.gpg");
343 err = gpgme_data_new_from_file (&key, trusted_path, 1);
349 err = gpgme_op_import (ctx, key);
352 gpgme_data_release (key);
355 gpgme_data_release (key);
357 err = gpgme_data_new_from_file (&sig, sig_file, 1);
364 err = gpgme_data_new_from_file (&text, text_file, 1);
367 gpgme_data_release (sig);
372 err = gpgme_op_verify (ctx, sig, text, NULL);
374 result = gpgme_op_verify_result (ctx);
378 /* see if any of the signitures matched */
379 s = result->signatures;
382 status = gpg_err_code (s->status);
383 if (status == GPG_ERR_NO_ERROR)
389 gpgme_data_release (sig);
390 gpgme_data_release (text);
394 #elif defined HAVE_OPENSSL
395 X509_STORE *store = NULL;
397 BIO *in = NULL, *indata = NULL;
399 // Sig check failed by default !
404 // Set-up the key store
405 if(!(store = setup_verify(conf, conf->signature_ca_file, conf->signature_ca_path))){
406 opkg_message(conf, OPKG_ERROR,
407 "Can't open CA certificates\n");
408 goto verify_file_end;
411 // Open a BIO to read the sig file
412 if (!(in = BIO_new_file(sig_file, "rb"))){
413 opkg_message(conf, OPKG_ERROR,
414 "Can't open signature file %s\n", sig_file);
415 goto verify_file_end;
418 // Read the PKCS7 block contained in the sig file
419 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
421 opkg_message(conf, OPKG_ERROR,
422 "Can't read signature file (Corrupted ?)\n");
423 goto verify_file_end;
425 #if defined(HAVE_PATHFINDER)
426 if(conf->check_x509_path){
427 if(!pkcs7_pathfinder_verify_signers(p7)){
428 opkg_message(conf, OPKG_ERROR, "pkcs7_pathfinder_verify_signers: "
429 "Path verification failed\n");
430 goto verify_file_end;
435 // Open the Package file to authenticate
436 if (!(indata = BIO_new_file(text_file, "rb"))){
437 opkg_message(conf, OPKG_ERROR,
438 "Can't open file %s\n", text_file);
439 goto verify_file_end;
442 // Let's verify the autenticity !
443 if (PKCS7_verify(p7, NULL, store, indata, NULL, PKCS7_BINARY) != 1){
445 opkg_message(conf, OPKG_ERROR,
446 "Verification failure\n");
456 X509_STORE_free(store);
460 /* mute `unused variable' warnings. */
469 #if defined(HAVE_OPENSSL) || defined(HAVE_SSLCURL)
470 static void openssl_init(void){
474 OPENSSL_config(NULL);
475 OpenSSL_add_all_algorithms();
476 ERR_load_crypto_strings();
484 #if defined HAVE_OPENSSL
485 static X509_STORE *setup_verify(opkg_conf_t *conf, char *CAfile, char *CApath){
486 X509_STORE *store = NULL;
487 X509_LOOKUP *lookup = NULL;
489 if(!(store = X509_STORE_new())){
490 // Something bad is happening...
494 // adds the X509 file lookup method
495 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_file());
500 // Autenticating against one CA file
502 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
503 // Invalid CA => Bye bye
504 opkg_message(conf, OPKG_ERROR,
505 "Error loading file %s\n", CAfile);
509 X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
512 // Now look into CApath directory if supplied
513 lookup = X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
519 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
520 opkg_message(conf, OPKG_ERROR,
521 "Error loading directory %s\n", CApath);
525 X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
534 X509_STORE_free(store);
542 void opkg_curl_cleanup(void){
544 curl_easy_cleanup (curl);
549 static CURL *opkg_curl_init(opkg_conf_t *conf, curl_progress_func cb, void *data){
552 curl = curl_easy_init();
557 if (conf->ssl_engine) {
559 /* use crypto engine */
560 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE, conf->ssl_engine) != CURLE_OK){
561 opkg_message(conf, OPKG_ERROR, "can't set crypto engine: '%s'\n",
567 /* set the crypto engine as default */
568 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT, 1L) != CURLE_OK){
569 opkg_message(conf, OPKG_ERROR, "can't set crypto engine as default\n");
576 /* cert & key can only be in PEM case in the same file */
577 if(conf->ssl_key_passwd){
578 if (curl_easy_setopt(curl, CURLOPT_SSLKEYPASSWD, conf->ssl_key_passwd) != CURLE_OK)
580 opkg_message(conf, OPKG_DEBUG, "Failed to set key password\n");
584 /* sets the client certificate and its type */
585 if(conf->ssl_cert_type){
586 if (curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, conf->ssl_cert_type) != CURLE_OK)
588 opkg_message(conf, OPKG_DEBUG, "Failed to set certificate format\n");
591 /* SSL cert name isn't mandatory */
593 curl_easy_setopt(curl, CURLOPT_SSLCERT, conf->ssl_cert);
596 /* sets the client key and its type */
597 if(conf->ssl_key_type){
598 if (curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, conf->ssl_key_type) != CURLE_OK)
600 opkg_message(conf, OPKG_DEBUG, "Failed to set key format\n");
604 if (curl_easy_setopt(curl, CURLOPT_SSLKEY, conf->ssl_key) != CURLE_OK)
606 opkg_message(conf, OPKG_DEBUG, "Failed to set key\n");
610 /* Should we verify the peer certificate ? */
611 if(conf->ssl_dont_verify_peer){
613 * CURLOPT_SSL_VERIFYPEER default is nonzero (curl => 7.10)
615 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
617 #ifdef HAVE_PATHFINDER
618 if(conf->check_x509_path){
619 if (curl_easy_setopt(curl, CURLOPT_SSL_CTX_FUNCTION, curl_ssl_ctx_function) != CURLE_OK){
620 opkg_message(conf, OPKG_DEBUG, "Failed to set ssl path verification callback\n");
622 curl_easy_setopt(curl, CURLOPT_SSL_CTX_DATA, NULL);
628 /* certification authority file and/or path */
629 if(conf->ssl_ca_file){
630 curl_easy_setopt(curl, CURLOPT_CAINFO, conf->ssl_ca_file);
632 if(conf->ssl_ca_path){
633 curl_easy_setopt(curl, CURLOPT_CAPATH, conf->ssl_ca_path);
637 curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
638 curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
639 if (conf->http_proxy || conf->ftp_proxy)
642 sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
644 curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
649 curl_easy_setopt (curl, CURLOPT_NOPROGRESS, (cb == NULL));
652 curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, data);
653 curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, cb);