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