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