libopkg/opkg_download.c

   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 #include "config.h"
  20 #include <curl/curl.h>
  21 #ifdef HAVE_GPGME
  22 #include <gpgme.h>
  23 #endif
  24
  25 #include "includes.h"
  26 #include "opkg_download.h"
  27 #include "opkg_message.h"
  28 #include "opkg_state.h"
  29
  30 #include "sprintf_alloc.h"
  31 #include "xsystem.h"
  32 #include "file_util.h"
  33 #include "str_util.h"
  34 #include "opkg_defines.h"
  35
  36 int opkg_download(opkg_conf_t *conf, const char *src, const char *dest_file_name, curl_progress_func cb, void *data)
  37 {
  38     int err = 0;
  39
  40     char *src_basec = strdup(src);
  41     char *src_base = basename(src_basec);
  42     char *tmp_file_location;
  43
  44     opkg_message(conf,OPKG_NOTICE,"Downloading %s\n", src);
  45
  46     if (str_starts_with(src, "file:")) {
  47         int ret;
  48         const char *file_src = src + 5;
  49         opkg_message(conf,OPKG_INFO,"Copying %s to %s...", file_src, dest_file_name);
  50         ret = file_copy(src + 5, dest_file_name);
  51         opkg_message(conf,OPKG_INFO,"Done\n");
  52         free(src_basec);
  53         return ret;
  54     }
  55
  56     sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
  57     err = unlink(tmp_file_location);
  58     if (err && errno != ENOENT) {
  59         opkg_message(conf,OPKG_ERROR, "%s: ERROR: failed to unlink %s: %s\n",
  60                 __FUNCTION__, tmp_file_location, strerror(errno));
  61         free(tmp_file_location);
  62         free(src_basec);
  63         return errno;
  64     }
  65
  66     if (conf->http_proxy) {
  67         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: http_proxy = %s\n", conf->http_proxy);
  68         setenv("http_proxy", conf->http_proxy, 1);
  69     }
  70     if (conf->ftp_proxy) {
  71         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: ftp_proxy = %s\n", conf->ftp_proxy);
  72         setenv("ftp_proxy", conf->ftp_proxy, 1);
  73     }
  74     if (conf->no_proxy) {
  75         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: no_proxy = %s\n", conf->no_proxy);
  76         setenv("no_proxy", conf->no_proxy, 1);
  77     }
  78
  79     CURL *curl;
  80     CURLcode res;
  81     FILE * file = fopen (tmp_file_location, "w");
  82
  83     curl = curl_easy_init ();
  84     if (curl)
  85     {
  86         curl_easy_setopt (curl, CURLOPT_URL, src);
  87         curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
  88         curl_easy_setopt (curl, CURLOPT_NOPROGRESS, (cb == NULL));
  89         if (cb)
  90         {
  91                 curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, data);
  92                 curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, cb);
  93         }
  94         curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
  95         curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
  96         if (conf->http_proxy || conf->ftp_proxy)
  97         {
  98             char *userpwd;
  99             sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
 100                     conf->proxy_passwd);
 101             curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
 102             free (userpwd);
 103         }
 104         res = curl_easy_perform (curl);
 105         fclose (file);
 106         if (res)
 107         {
 108             long error_code;
 109             curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
 110             opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, error_code);
 111             free(tmp_file_location);
 112             free(src_basec);
 113             curl_easy_cleanup (curl);
 114             return res;
 115         }
 116         curl_easy_cleanup (curl);
 117
 118     }
 119     else
 120     {
 121         free(tmp_file_location);
 122         free(src_basec);
 123         return -1;
 124     }
 125
 126     err = file_move(tmp_file_location, dest_file_name);
 127
 128     free(tmp_file_location);
 129     free(src_basec);
 130
 131     if (err) {
 132         return err;
 133     }
 134
 135     return 0;
 136 }
 137
 138 int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
 139 {
 140     int err;
 141     char *url;
 142     char *pkgid;
 143     char *stripped_filename;
 144
 145     if (pkg->src == NULL) {
 146         opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
 147                 pkg->name, pkg->parent->name);
 148         return -1;
 149     }
 150
 151     sprintf_alloc (&pkgid, "%s;%s;%s;", pkg->name, pkg->version, pkg->architecture);
 152     opkg_set_current_state (conf, OPKG_STATE_DOWNLOADING_PKG, pkgid);
 153     free (pkgid);
 154
 155     sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 156
 157     /* XXX: BUG: The pkg->filename might be something like
 158        "../../foo.opk". While this is correct, and exactly what we
 159        want to use to construct url above, here we actually need to
 160        use just the filename part, without any directory. */
 161
 162     stripped_filename = strrchr(pkg->filename, '/');
 163     if ( ! stripped_filename )
 164         stripped_filename = pkg->filename;
 165
 166     sprintf_alloc(&pkg->local_filename, "%s/%s", dir, stripped_filename);
 167
 168     err = opkg_download(conf, url, pkg->local_filename, NULL, NULL);
 169     free(url);
 170
 171     opkg_set_current_state (conf, OPKG_STATE_NONE, NULL);
 172     return err;
 173 }
 174
 175 /*
 176  * Downloads file from url, installs in package database, return package name.
 177  */
 178 int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
 179 {
 180      int err = 0;
 181      pkg_t *pkg;
 182      pkg = pkg_new();
 183      if (pkg == NULL)
 184           return ENOMEM;
 185
 186      if (str_starts_with(url, "http://")
 187          || str_starts_with(url, "ftp://")) {
 188           char *tmp_file;
 189           char *file_basec = strdup(url);
 190           char *file_base = basename(file_basec);
 191
 192           sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
 193           err = opkg_download(conf, url, tmp_file, NULL, NULL);
 194           if (err)
 195                return err;
 196
 197           err = pkg_init_from_file(pkg, tmp_file);
 198           if (err)
 199                return err;
 200           pkg->local_filename = strdup(tmp_file);
 201
 202           free(tmp_file);
 203           free(file_basec);
 204
 205      } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
 206                 || strcmp(&url[strlen(url) - 4], IPKG_PKG_EXTENSION) == 0
 207                 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
 208
 209           err = pkg_init_from_file(pkg, url);
 210           if (err)
 211                return err;
 212           pkg->local_filename = strdup(url);
 213           opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
 214           pkg->provided_by_hand = 1;
 215
 216      } else {
 217        pkg_deinit(pkg);
 218        free(pkg);
 219        return 0;
 220      }
 221
 222      if (!pkg->architecture) {
 223           opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
 224           return -EINVAL;
 225      }
 226
 227      pkg->dest = conf->default_dest;
 228      pkg->state_want = SW_INSTALL;
 229      pkg->state_flag |= SF_PREFER;
 230      pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
 231      if ( pkg == NULL ){
 232         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 233         return 0;
 234      }
 235      if (namep) {
 236           *namep = strdup(pkg->name);
 237      }
 238      return 0;
 239 }
 240
 241 int
 242 opkg_verify_file (opkg_conf_t *conf, char *text_file, char *sig_file)
 243 {
 244 #ifdef HAVE_GPGME
 245     int status = -1;
 246     gpgme_ctx_t ctx;
 247     gpgme_data_t sig, text, key;
 248     gpgme_error_t err = -1;
 249     gpgme_verify_result_t result;
 250     gpgme_signature_t s;
 251     char *trusted_path = NULL;
 252
 253     err = gpgme_new (&ctx);
 254
 255     if (err)
 256         return -1;
 257
 258     sprintf_alloc(&trusted_path, "%s/%s", conf->offline_root, "/etc/opkg/trusted.gpg");
 259     err = gpgme_data_new_from_file (&key, trusted_path, 1);
 260     free (trusted_path);
 261     if (err)
 262     {
 263       return -1;
 264     }
 265     err = gpgme_op_import (ctx, key);
 266     if (err)
 267     {
 268       gpgme_data_release (key);
 269       return -1;
 270     }
 271     gpgme_data_release (key);
 272
 273     err = gpgme_data_new_from_file (&sig, sig_file, 1);
 274     if (err)
 275     {
 276         gpgme_release (ctx);
 277         return -1;
 278     }
 279
 280     err = gpgme_data_new_from_file (&text, text_file, 1);
 281     if (err)
 282     {
 283         gpgme_data_release (sig);
 284         gpgme_release (ctx);
 285         return -1;
 286     }
 287
 288     err = gpgme_op_verify (ctx, sig, text, NULL);
 289
 290     result = gpgme_op_verify_result (ctx);
 291     if (!result)
 292         return -1;
 293
 294     /* see if any of the signitures matched */
 295     s = result->signatures;
 296     while (s)
 297     {
 298         status = gpg_err_code (s->status);
 299         if (status == GPG_ERR_NO_ERROR)
 300             break;
 301         s = s->next;
 302     }
 303
 304
 305     gpgme_data_release (sig);
 306     gpgme_data_release (text);
 307     gpgme_release (ctx);
 308
 309     return status;
 310 #else
 311     opkg_message (conf, OPKG_NOTICE, "Signature check for %s was skipped because GPG support was not enabled in this build\n");
 312     return 0;
 313 #endif
 314 }