libopkg/opkg_download.c

   1 /* vi: set noexpandtab sw=4 sts=4: */
   2 /* opkg_download.c - the itsy 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 "opkg.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
  35 #ifdef OPKG_LIB
  36 #include "libopkg.h"
  37 opkg_download_progress_callback opkg_cb_download_progress = NULL;
  38 #endif
  39
  40 int
  41 curl_progress_func (char* url,
  42                     double t, /* dltotal */
  43                     double d, /* dlnow */
  44                     double ultotal,
  45                     double ulnow)
  46 {
  47     int i;
  48     int p = (t) ? d*100/t : 0;
  49
  50 #ifdef OPKG_LIB
  51     if (opkg_cb_download_progress)
  52     {
  53         static int prev = -1;
  54
  55         /* don't report the same percentage multiple times
  56          * (this can occur due to rounding) */
  57         if (prev == p)
  58             return 0;
  59         prev = p;
  60
  61         opkg_cb_download_progress (p, url);
  62         return 0;
  63     }
  64 #endif
  65
  66     /* skip progress bar if we haven't done started yet
  67      * this prevents drawing the progress bar if we receive an error such as
  68      * file not found */
  69     if (t == 0)
  70         return 0;
  71
  72     printf ("\r%3d%% |", p);
  73     for (i = 1; i < 73; i++)
  74     {
  75         if (i <= p * 0.73)
  76             printf ("=");
  77         else
  78             printf ("-");
  79     }
  80     printf ("|");
  81     fflush(stdout);
  82     return 0;
  83 }
  84
  85 int opkg_download(opkg_conf_t *conf, const char *src, const char *dest_file_name)
  86 {
  87     int err = 0;
  88
  89     char *src_basec = strdup(src);
  90     char *src_base = basename(src_basec);
  91     char *tmp_file_location;
  92
  93     opkg_message(conf,OPKG_NOTICE,"Downloading %s\n", src);
  94
  95     fflush(stdout);
  96
  97     if (str_starts_with(src, "file:")) {
  98         int ret;
  99         const char *file_src = src + 5;
 100         opkg_message(conf,OPKG_INFO,"Copying %s to %s...", file_src, dest_file_name);
 101         ret = file_copy(src + 5, dest_file_name);
 102         opkg_message(conf,OPKG_INFO,"Done\n");
 103         return ret;
 104     }
 105
 106     sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
 107     err = unlink(tmp_file_location);
 108     if (err && errno != ENOENT) {
 109         opkg_message(conf,OPKG_ERROR, "%s: ERROR: failed to unlink %s: %s\n",
 110                 __FUNCTION__, tmp_file_location, strerror(errno));
 111         free(tmp_file_location);
 112         return errno;
 113     }
 114
 115     if (conf->http_proxy) {
 116         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: http_proxy = %s\n", conf->http_proxy);
 117         setenv("http_proxy", conf->http_proxy, 1);
 118     }
 119     if (conf->ftp_proxy) {
 120         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: ftp_proxy = %s\n", conf->ftp_proxy);
 121         setenv("ftp_proxy", conf->ftp_proxy, 1);
 122     }
 123     if (conf->no_proxy) {
 124         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: no_proxy = %s\n", conf->no_proxy);
 125         setenv("no_proxy", conf->no_proxy, 1);
 126     }
 127
 128     /* XXX: BUG rewrite to use execvp or else busybox's internal wget -Jamey 7/23/2002 */
 129 #if 0
 130     sprintf_alloc(&cmd, "wget --passive-ftp %s %s%s %s%s %s -P %s %s",
 131                   (conf->http_proxy || conf->ftp_proxy) ? "--proxy=on" : "",
 132                   conf->proxy_user ? "--proxy-user=" : "",
 133                   conf->proxy_user ? conf->proxy_user : "",
 134                   conf->proxy_passwd ? "--proxy-passwd=" : "",
 135                   conf->proxy_passwd ? conf->proxy_passwd : "",
 136                   conf->verbose_wget ? "" : "-q",
 137                   conf->tmp_dir,
 138                   src);
 139     err = xsystem(cmd);
 140     if (err) {
 141         if (err != -1) {
 142             opkg_message(conf,OPKG_ERROR, "%s: ERROR: Command failed with return value %d: `%s'\n",
 143                     __FUNCTION__, err, cmd);
 144         }
 145         unlink(tmp_file_location);
 146         free(tmp_file_location);
 147         free(src_basec);
 148         free(cmd);
 149         return EINVAL;
 150     }
 151     free(cmd);
 152 #endif
 153     CURL *curl;
 154     CURLcode res;
 155     FILE * file = fopen (tmp_file_location, "w");
 156
 157     curl = curl_easy_init ();
 158     if (curl)
 159     {
 160         curl_easy_setopt (curl, CURLOPT_URL, src);
 161         curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
 162         curl_easy_setopt (curl, CURLOPT_NOPROGRESS, 0);
 163         curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, src);
 164         curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, curl_progress_func);
 165         curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
 166         if (conf->http_proxy || conf->ftp_proxy)
 167         {
 168             char *userpwd;
 169             sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
 170                     conf->proxy_passwd);
 171             curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
 172             free (userpwd);
 173         }
 174         res = curl_easy_perform (curl);
 175         curl_easy_cleanup (curl);
 176         fclose (file);
 177         if (res)
 178         {
 179             long error_code;
 180             curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
 181             opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, error_code);
 182             return res;
 183         }
 184
 185     }
 186     else
 187         return -1;
 188
 189     printf ("\n");
 190
 191     err = file_move(tmp_file_location, dest_file_name);
 192
 193     free(tmp_file_location);
 194     free(src_basec);
 195
 196     if (err) {
 197         return err;
 198     }
 199
 200     return 0;
 201 }
 202
 203 int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
 204 {
 205     int err;
 206     char *url;
 207     char *pkgid;
 208
 209     if (pkg->src == NULL) {
 210         opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
 211                 pkg->name, pkg->parent->name);
 212         return -1;
 213     }
 214
 215     sprintf_alloc (&pkgid, "%s;%s;%s;", pkg->name, pkg->version, pkg->architecture);
 216     opkg_set_current_state (conf, OPKG_STATE_DOWNLOADING_PKG, pkgid);
 217     free (pkgid);
 218
 219     sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 220
 221     /* XXX: BUG: The pkg->filename might be something like
 222        "../../foo.ipk". While this is correct, and exactly what we
 223        want to use to construct url above, here we actually need to
 224        use just the filename part, without any directory. */
 225     sprintf_alloc(&pkg->local_filename, "%s/%s", dir, pkg->filename);
 226
 227     err = opkg_download(conf, url, pkg->local_filename);
 228     free(url);
 229
 230     opkg_set_current_state (conf, OPKG_STATE_NONE, NULL);
 231     return err;
 232 }
 233
 234 /*
 235  * Downloads file from url, installs in package database, return package name.
 236  */
 237 int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
 238 {
 239      int err = 0;
 240      pkg_t *pkg;
 241      pkg = pkg_new();
 242      if (pkg == NULL)
 243           return ENOMEM;
 244
 245      if (str_starts_with(url, "http://")
 246          || str_starts_with(url, "ftp://")) {
 247           char *tmp_file;
 248           char *file_basec = strdup(url);
 249           char *file_base = basename(file_basec);
 250
 251           sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
 252           err = opkg_download(conf, url, tmp_file);
 253           if (err)
 254                return err;
 255
 256           err = pkg_init_from_file(pkg, tmp_file);
 257           if (err)
 258                return err;
 259           pkg->local_filename = strdup(tmp_file);
 260
 261           free(tmp_file);
 262           free(file_basec);
 263
 264      } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
 265                 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
 266
 267           err = pkg_init_from_file(pkg, url);
 268           if (err)
 269                return err;
 270           pkg->local_filename = strdup(url);
 271           opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
 272           pkg->provided_by_hand = 1;
 273
 274      } else {
 275        pkg_deinit(pkg);
 276        free(pkg);
 277        return 0;
 278      }
 279
 280      if (!pkg->architecture) {
 281           opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
 282           return -EINVAL;
 283      }
 284
 285      pkg->dest = conf->default_dest;
 286      pkg->state_want = SW_INSTALL;
 287      pkg->state_flag |= SF_PREFER;
 288      pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
 289      if ( pkg == NULL ){
 290         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 291         return 0;
 292      }
 293      if (namep) {
 294           *namep = strdup(pkg->name);
 295      }
 296      return 0;
 297 }
 298
 299 int
 300 opkg_verify_file (char *text_file, char *sig_file)
 301 {
 302 #ifdef HAVE_GPGME
 303     int status = -1;
 304     gpgme_ctx_t ctx;
 305     gpgme_data_t sig, text;
 306     gpgme_error_t err = -1;
 307     gpgme_verify_result_t result;
 308     gpgme_signature_t s;
 309
 310     err = gpgme_new (&ctx);
 311
 312     if (err)
 313         return -1;
 314
 315     err = gpgme_data_new_from_file (&sig, sig_file, 1);
 316     if (err)
 317         return -1;
 318
 319     err = gpgme_data_new_from_file (&text, text_file, 1);
 320     if (err)
 321         return -1;
 322
 323     err = gpgme_op_verify (ctx, sig, text, NULL);
 324
 325     result = gpgme_op_verify_result (ctx);
 326
 327     /* see if any of the signitures matched */
 328     s = result->signatures;
 329     while (s)
 330     {
 331         status = gpg_err_code (s->status);
 332         if (status == GPG_ERR_NO_ERROR)
 333             break;
 334         s = s->next;
 335     }
 336
 337     gpgme_data_release (sig);
 338     gpgme_data_release (text);
 339     gpgme_release (ctx);
 340
 341     return status;
 342 #else
 343     printf ("Signature check skipped because GPG support was not enabled in this build\n");
 344     return 0;
 345 #endif
 346 }