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
  20 #include <curl/curl.h>
  21 #include <gpgme.h>
  22
  23 #include "opkg.h"
  24 #include "opkg_download.h"
  25 #include "opkg_message.h"
  26
  27 #include "sprintf_alloc.h"
  28 #include "xsystem.h"
  29 #include "file_util.h"
  30 #include "str_util.h"
  31
  32 #ifdef OPKG_LIB
  33 #include "libopkg.h"
  34 opkg_download_progress_callback opkg_cb_download_progress = NULL;
  35 #endif
  36
  37 int
  38 curl_progress_func (char* url,
  39                     double t, /* dltotal */
  40                     double d, /* dlnow */
  41                     double ultotal,
  42                     double ulnow)
  43 {
  44     int i;
  45     int p = d*100/t;
  46
  47 #ifdef OPKG_LIB
  48     if (opkg_cb_download_progress)
  49     {
  50         static int prev = -1;
  51
  52         /* don't report the same percentage multiple times
  53          * (this can occur due to rounding) */
  54         if (prev == p)
  55             return 0;
  56         prev = p;
  57
  58         opkg_cb_download_progress (p, url);
  59         return 0;
  60     }
  61 #endif
  62
  63     /* skip progress bar if we haven't done started yet
  64      * this prevents drawing the progress bar if we receive an error such as
  65      * file not found */
  66     if (t == 0)
  67         return 0;
  68
  69     printf ("\r%3d%% |", p);
  70     for (i = 1; i < 73; i++)
  71     {
  72         if (i <= p * 0.73)
  73             printf ("=");
  74         else
  75             printf ("-");
  76     }
  77     printf ("|");
  78     fflush(stdout);
  79     return 0;
  80 }
  81
  82 int opkg_download(opkg_conf_t *conf, const char *src, const char *dest_file_name)
  83 {
  84     int err = 0;
  85
  86     char *src_basec = strdup(src);
  87     char *src_base = basename(src_basec);
  88     char *tmp_file_location;
  89
  90     opkg_message(conf,OPKG_NOTICE,"Downloading %s\n", src);
  91
  92     fflush(stdout);
  93
  94     if (str_starts_with(src, "file:")) {
  95         int ret;
  96         const char *file_src = src + 5;
  97         opkg_message(conf,OPKG_INFO,"Copying %s to %s...", file_src, dest_file_name);
  98         ret = file_copy(src + 5, dest_file_name);
  99         opkg_message(conf,OPKG_INFO,"Done\n");
 100         return ret;
 101     }
 102
 103     sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
 104     err = unlink(tmp_file_location);
 105     if (err && errno != ENOENT) {
 106         opkg_message(conf,OPKG_ERROR, "%s: ERROR: failed to unlink %s: %s\n",
 107                 __FUNCTION__, tmp_file_location, strerror(errno));
 108         free(tmp_file_location);
 109         return errno;
 110     }
 111
 112     if (conf->http_proxy) {
 113         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: http_proxy = %s\n", conf->http_proxy);
 114         setenv("http_proxy", conf->http_proxy, 1);
 115     }
 116     if (conf->ftp_proxy) {
 117         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: ftp_proxy = %s\n", conf->ftp_proxy);
 118         setenv("ftp_proxy", conf->ftp_proxy, 1);
 119     }
 120     if (conf->no_proxy) {
 121         opkg_message(conf,OPKG_DEBUG,"Setting environment variable: no_proxy = %s\n", conf->no_proxy);
 122         setenv("no_proxy", conf->no_proxy, 1);
 123     }
 124
 125     /* XXX: BUG rewrite to use execvp or else busybox's internal wget -Jamey 7/23/2002 */
 126 #if 0
 127     sprintf_alloc(&cmd, "wget --passive-ftp %s %s%s %s%s %s -P %s %s",
 128                   (conf->http_proxy || conf->ftp_proxy) ? "--proxy=on" : "",
 129                   conf->proxy_user ? "--proxy-user=" : "",
 130                   conf->proxy_user ? conf->proxy_user : "",
 131                   conf->proxy_passwd ? "--proxy-passwd=" : "",
 132                   conf->proxy_passwd ? conf->proxy_passwd : "",
 133                   conf->verbose_wget ? "" : "-q",
 134                   conf->tmp_dir,
 135                   src);
 136     err = xsystem(cmd);
 137     if (err) {
 138         if (err != -1) {
 139             opkg_message(conf,OPKG_ERROR, "%s: ERROR: Command failed with return value %d: `%s'\n",
 140                     __FUNCTION__, err, cmd);
 141         }
 142         unlink(tmp_file_location);
 143         free(tmp_file_location);
 144         free(src_basec);
 145         free(cmd);
 146         return EINVAL;
 147     }
 148     free(cmd);
 149 #endif
 150     CURL *curl;
 151     CURLcode res;
 152     FILE * file = fopen (tmp_file_location, "w");
 153
 154     curl = curl_easy_init ();
 155     if (curl)
 156     {
 157         curl_easy_setopt (curl, CURLOPT_URL, src);
 158         curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
 159         curl_easy_setopt (curl, CURLOPT_NOPROGRESS, 0);
 160         curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, src);
 161         curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, curl_progress_func);
 162         curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
 163         if (conf->http_proxy || conf->ftp_proxy)
 164         {
 165             char *userpwd;
 166             sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
 167                     conf->proxy_passwd);
 168             curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
 169             free (userpwd);
 170         }
 171         res = curl_easy_perform (curl);
 172         curl_easy_cleanup (curl);
 173         fclose (file);
 174         if (res)
 175         {
 176             long error_code;
 177             curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
 178             opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, error_code);
 179             return res;
 180         }
 181
 182     }
 183     else
 184         return -1;
 185
 186     printf ("\n");
 187
 188     err = file_move(tmp_file_location, dest_file_name);
 189
 190     free(tmp_file_location);
 191     free(src_basec);
 192
 193     if (err) {
 194         return err;
 195     }
 196
 197     return 0;
 198 }
 199
 200 int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
 201 {
 202     int err;
 203     char *url;
 204
 205     if (pkg->src == NULL) {
 206         opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
 207                 pkg->name, pkg->parent->name);
 208         return -1;
 209     }
 210
 211     sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 212
 213     /* XXX: BUG: The pkg->filename might be something like
 214        "../../foo.ipk". While this is correct, and exactly what we
 215        want to use to construct url above, here we actually need to
 216        use just the filename part, without any directory. */
 217     sprintf_alloc(&pkg->local_filename, "%s/%s", dir, pkg->filename);
 218
 219     err = opkg_download(conf, url, pkg->local_filename);
 220     free(url);
 221
 222     return err;
 223 }
 224
 225 /*
 226  * Downloads file from url, installs in package database, return package name.
 227  */
 228 int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
 229 {
 230      int err = 0;
 231      pkg_t *pkg;
 232      pkg = pkg_new();
 233      if (pkg == NULL)
 234           return ENOMEM;
 235
 236      if (str_starts_with(url, "http://")
 237          || str_starts_with(url, "ftp://")) {
 238           char *tmp_file;
 239           char *file_basec = strdup(url);
 240           char *file_base = basename(file_basec);
 241
 242           sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
 243           err = opkg_download(conf, url, tmp_file);
 244           if (err)
 245                return err;
 246
 247           err = pkg_init_from_file(pkg, tmp_file);
 248           if (err)
 249                return err;
 250           pkg->local_filename = strdup(tmp_file);
 251
 252           free(tmp_file);
 253           free(file_basec);
 254
 255      } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
 256                 || strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
 257
 258           err = pkg_init_from_file(pkg, url);
 259           if (err)
 260                return err;
 261           pkg->local_filename = strdup(url);
 262           opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
 263           pkg->provided_by_hand = 1;
 264
 265      } else {
 266        pkg_deinit(pkg);
 267        free(pkg);
 268        return 0;
 269      }
 270
 271      if (!pkg->architecture) {
 272           opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
 273           return -EINVAL;
 274      }
 275
 276      pkg->dest = conf->default_dest;
 277      pkg->state_want = SW_INSTALL;
 278      pkg->state_flag |= SF_PREFER;
 279      pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
 280      if ( pkg == NULL ){
 281         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 282         return 0;
 283      }
 284      if (namep) {
 285           *namep = strdup(pkg->name);
 286      }
 287      return 0;
 288 }
 289
 290 int
 291 opkg_verify_file (char *text_file, char *sig_file)
 292 {
 293     int status = -1;
 294     gpgme_ctx_t ctx;
 295     gpgme_data_t sig, text;
 296     gpgme_error_t err = -1;
 297     gpgme_verify_result_t result;
 298     gpgme_signature_t s;
 299
 300     err = gpgme_new (&ctx);
 301
 302     if (err)
 303         return -1;
 304
 305     err = gpgme_data_new_from_file (&sig, sig_file, 1);
 306     if (err)
 307         return -1;
 308
 309     err = gpgme_data_new_from_file (&text, text_file, 1);
 310     if (err)
 311         return -1;
 312
 313     err = gpgme_op_verify (ctx, sig, text, NULL);
 314
 315     result = gpgme_op_verify_result (ctx);
 316
 317     /* see if any of the signitures matched */
 318     s = result->signatures;
 319     while (s)
 320     {
 321         status = gpg_err_code (s->status);
 322         if (status == GPG_ERR_NO_ERROR)
 323             break;
 324         s = s->next;
 325     }
 326
 327     gpgme_data_release (sig);
 328     gpgme_data_release (text);
 329     gpgme_release (ctx);
 330
 331     return status;
 332 }