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/* vi: set expandtab sw=4 sts=4: */
/* pkg_src.c - the opkg package management system
Carl D. Worth
Copyright (C) 2001 University of Southern California
SPDX-License-Identifier: GPL-2.0-or-later
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
*/
#include "config.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include "file_util.h"
#include "opkg_conf.h"
#include "opkg_download.h"
#include "opkg_message.h"
#include "opkg_verify.h"
#include "pkg_src.h"
#include "sprintf_alloc.h"
#include "xfuncs.h"
int pkg_src_init(pkg_src_t * src, const char *name, const char *base_url,
pkg_src_options_t *options, const char *extra_data, int gzip)
{
src->gzip = gzip;
src->name = xstrdup(name);
src->value = xstrdup(base_url);
src->options = xmalloc(sizeof(pkg_src_options_t));
if (options)
src->options->signature_verified = options->signature_verified;
else
src->options->signature_verified = 0;
if (extra_data)
src->extra_data = xstrdup(extra_data);
else
src->extra_data = NULL;
return 0;
}
void pkg_src_deinit(pkg_src_t * src)
{
free(src->name);
free(src->value);
free(src->options);
free(src->extra_data);
}
static int pkg_src_download(pkg_src_t * src)
{
int err = 0;
char *url;
char *feed;
const char *url_filename;
sprintf_alloc(&feed, "%s/%s", opkg_config->lists_dir, src->name);
url_filename = src->gzip ? "Packages.gz" : "Packages";
if (src->extra_data) /* debian style? */
sprintf_alloc(&url, "%s/%s/%s", src->value, src->extra_data,
url_filename);
else
sprintf_alloc(&url, "%s/%s", src->value, url_filename);
if (src->gzip) {
char *cache_location;
cache_location = opkg_download_cache(url, NULL, NULL);
if (!cache_location) {
err = -1;
goto cleanup;
}
if (opkg_config->compress_list_files) {
strcat(feed, ".gz");
err = file_copy(cache_location, feed);
} else {
err = file_decompress(cache_location, feed);
}
free(cache_location);
if (err) {
opkg_msg(ERROR, "Couldn't %s feed for source %s.",
(opkg_config->compress_list_files) ? "copy" : "decompress",
src->name);
goto cleanup;
}
} else {
err = opkg_download(url, feed, NULL, NULL);
if (err)
goto cleanup;
if (opkg_config->compress_list_files)
file_gz_compress(feed);
}
opkg_msg(DEBUG, "Downloaded package list for %s.\n", src->name);
cleanup:
free(feed);
free(url);
return err;
}
static int pkg_src_download_signature(pkg_src_t * src)
{
int err = 0;
char *url;
char *sigfile;
const char *sigext;
if (strcmp(opkg_config->signature_type, "gpg-asc") == 0)
sigext = "asc";
else
sigext = "sig";
sprintf_alloc(&sigfile, "%s/%s.%s", opkg_config->lists_dir, src->name,
sigext);
opkg_msg(DEBUG, "sigfile: %s\n", sigfile);
/* get the url for the sig file */
if (src->extra_data) /* debian style? */
sprintf_alloc(&url, "%s/%s/Packages.%s", src->value, src->extra_data,
sigext);
else
sprintf_alloc(&url, "%s/Packages.%s", src->value, sigext);
opkg_msg(DEBUG, "url: %s\n", url);
err = opkg_download(url, sigfile, NULL, NULL);
if (err) {
opkg_msg(ERROR, "Failed to download signature for %s.\n", src->name);
goto cleanup;
}
opkg_msg(DEBUG, "Downloaded signature for %s.\n", src->name);
cleanup:
free(sigfile);
free(url);
return err;
}
int pkg_src_verify(pkg_src_t * src)
{
int err = 0;
char *feed;
char *sigfile;
const char *sigext;
if (strcmp(opkg_config->signature_type, "gpg-asc") == 0)
sigext = "asc";
else
sigext = "sig";
sprintf_alloc(&feed, "%s/%s", opkg_config->lists_dir, src->name);
sprintf_alloc(&sigfile, "%s.%s", feed, sigext);
opkg_msg(DEBUG, "feed: %s\n", feed);
opkg_msg(DEBUG, "sigfile: %s\n", sigfile);
if (!file_exists(sigfile)) {
opkg_msg(ERROR,
"Signature file is missing for %s. "
"Perhaps you need to run 'opkg update'?\n", src->name);
err = -1;
goto cleanup;
}
err = opkg_verify_signature(feed, sigfile);
if (err) {
opkg_msg(ERROR, "Signature verification failed for %s.\n", src->name);
goto cleanup;
}
opkg_msg(DEBUG, "Signature verification passed for %s.\n", src->name);
src->options->signature_verified = 1;
cleanup:
if (err) {
/* Remove incorrect files. */
unlink(feed);
unlink(sigfile);
}
free(sigfile);
free(feed);
return err;
}
int pkg_src_update(pkg_src_t * src)
{
int err;
err = pkg_src_download(src);
if (err)
return err;
if (opkg_config->check_signature && !(src->options->signature_verified)) {
err = pkg_src_download_signature(src);
if (err)
return err;
/* pkg_src_verify deletes the downloaded files if they were
* incorrect, so we don't have to do that here. */
err = pkg_src_verify(src);
if (err)
return err;
}
opkg_msg(NOTICE, "Updated source '%s'.\n", src->name);
return 0;
}
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