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/* release.c - the opkg package management system
Copyright (C) 2010,2011 Javier Palacios
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 <unistd.h>
#include <ctype.h>
#include "release.h"
#include "opkg_utils.h"
#include "libbb/libbb.h"
#include "opkg_download.h"
#include "sprintf_alloc.h"
#include "release_parse.h"
#include "parse_util.h"
#include "file_util.h"
static void
release_init(release_t *release)
{
release->name = NULL;
release->datestring = NULL;
release->architectures = NULL;
release->architectures_count = 0;
release->components = NULL;
release->components_count = 0;
release->complist = NULL;
release->complist_count = 0;
}
release_t *
release_new(void)
{
release_t *release;
release = xcalloc(1, sizeof(release_t));
release_init(release);
return release;
}
void
release_deinit(release_t *release)
{
int i;
free(release->name);
free(release->datestring);
for(i = 0; i < release->architectures_count; i++){
free(release->architectures[i]);
}
free(release->architectures);
for(i = 0; i < release->components_count; i++){
free(release->components[i]);
}
free(release->components);
for(i = 0; i < release->complist_count; i++){
free(release->complist[i]);
}
free(release->complist);
}
int
release_init_from_file(release_t *release, const char *filename)
{
int err = 0;
FILE *release_file;
release_file = fopen(filename, "r");
if (release_file == NULL) {
opkg_perror(ERROR, "Failed to open %s", filename);
return -1;
}
err=release_parse_from_stream(release, release_file);
if (!err) {
if (!release_arch_supported(release)) {
opkg_msg(ERROR, "No valid architecture found on Release file.\n");
err = -1;
}
}
return err;
}
const char *
item_in_list(const char *comp, char **complist, const unsigned int count)
{
int i;
if (!complist)
return comp;
for(i = 0; i < count; i++){
if (strcmp(comp, complist[i]) == 0)
return complist[i];
}
return NULL;
}
int
release_arch_supported(release_t *release)
{
nv_pair_list_elt_t *l;
list_for_each_entry(l , &conf->arch_list.head, node) {
nv_pair_t *nv = (nv_pair_t *)l->data;
if (item_in_list(nv->name, release->architectures, release->architectures_count)) {
opkg_msg(DEBUG, "Arch %s (priority %s) supported for dist %s.\n",
nv->name, nv->value, release->name);
return 1;
}
}
return 0;
}
int
release_comps_supported(release_t *release, const char *complist)
{
int ret = 1;
int i;
if (complist) {
release->complist = parse_list(complist, &release->complist_count, ' ', 1);
for(i = 0; i < release->complist_count; i++){
if (!item_in_list(release->complist[i], release->components, release->components_count)) {
opkg_msg(ERROR, "Component %s not supported for dist %s.\n",
release->complist[i], release->name);
ret = 0;
}
}
}
return ret;
}
const char **
release_comps(release_t *release, unsigned int *count)
{
char **comps = release->complist;
if (!comps) {
comps = release->components;
*count = release->components_count;
} else {
*count = release->complist_count;
}
return (const char **)comps;
}
int
release_download(release_t *release, pkg_src_t *dist, char *lists_dir, char *tmpdir)
{
int ret = 0;
unsigned int ncomp;
const char **comps = release_comps(release, &ncomp);
nv_pair_list_elt_t *l;
int i;
for(i = 0; i < ncomp; i++){
int err = 0;
char *prefix;
sprintf_alloc(&prefix, "%s/dists/%s/%s/binary", dist->value, dist->name,
comps[i]);
list_for_each_entry(l , &conf->arch_list.head, node) {
char *url;
char *tmp_file_name, *list_file_name;
char *subpath = NULL;
nv_pair_t *nv = (nv_pair_t *)l->data;
sprintf_alloc(&list_file_name, "%s/%s-%s-%s", lists_dir, dist->name, comps[i], nv->name);
sprintf_alloc(&tmp_file_name, "%s/%s-%s-%s%s", tmpdir, dist->name, comps[i], nv->name, ".gz");
sprintf_alloc(&subpath, "%s/binary-%s/%s", comps[i], nv->name, dist->gzip ? "Packages.gz" : "Packages");
if (dist->gzip) {
sprintf_alloc(&url, "%s-%s/Packages.gz", prefix, nv->name);
err = opkg_download(url, tmp_file_name, NULL, NULL, 1);
if (!err) {
err = release_verify_file(release, tmp_file_name, subpath);
if (err) {
unlink (tmp_file_name);
unlink (list_file_name);
}
}
if (!err) {
FILE *in, *out;
opkg_msg(NOTICE, "Inflating %s.\n", url);
in = fopen (tmp_file_name, "r");
out = fopen (list_file_name, "w");
if (in && out) {
err = unzip (in, out);
if (err)
opkg_msg(INFO, "Corrumpt file at %s.\n", url);
} else
err = 1;
if (in)
fclose (in);
if (out)
fclose (out);
unlink (tmp_file_name);
}
free(url);
}
if (err) {
sprintf_alloc(&url, "%s-%s/Packages", prefix, nv->name);
err = opkg_download(url, list_file_name, NULL, NULL, 1);
if (!err) {
err = release_verify_file(release, tmp_file_name, subpath);
if (err)
unlink (list_file_name);
}
free(url);
}
free(tmp_file_name);
free(list_file_name);
}
if(err)
ret = 1;
free(prefix);
}
return ret;
}
int
release_get_size(release_t *release, const char *pathname)
{
const cksum_t *cksum;
if (release->md5sums) {
cksum = cksum_list_find(release->md5sums, pathname);
return cksum->size;
}
#ifdef HAVE_SHA256
if (release->sha256sums) {
cksum = cksum_list_find(release->sha256sums, pathname);
return cksum->size;
}
#endif
return -1;
}
const char *
release_get_md5(release_t *release, const char *pathname)
{
const cksum_t *cksum;
if (release->md5sums) {
cksum = cksum_list_find(release->md5sums, pathname);
return cksum->value;
}
return '\0';
}
#ifdef HAVE_SHA256
const char *
release_get_sha256(release_t *release, const char *pathname)
{
const cksum_t *cksum;
if (release->sha256sums) {
cksum = cksum_list_find(release->sha256sums, pathname);
return cksum->value;
}
return '\0';
}
#endif
int
release_verify_file(release_t *release, const char* file_name, const char *pathname)
{
struct stat f_info;
char *f_md5 = NULL;
const char *md5 = release_get_md5(release, pathname);
#ifdef HAVE_SHA256
char *f_sha256 = NULL;
const char *sha256 = release_get_sha256(release, pathname);
#endif
int ret = 0;
if (stat(file_name, &f_info) || (f_info.st_size!=release_get_size(release, pathname))) {
opkg_msg(ERROR, "Size verification failed for %s - %s.\n", release->name, pathname);
ret = 1;
} else {
f_md5 = file_md5sum_alloc(file_name);
#ifdef HAVE_SHA256
f_sha256 = file_sha256sum_alloc(file_name);
#endif
if (md5 && strcmp(md5, f_md5)) {
opkg_msg(ERROR, "MD5 verification failed for %s - %s.\n", release->name, pathname);
ret = 1;
#ifdef HAVE_SHA256
} else if (sha256 && strcmp(sha256, f_sha256)) {
opkg_msg(ERROR, "SHA256 verification failed for %s - %s.\n", release->name, pathname);
ret = 1;
#endif
}
}
free(f_md5);
#ifdef HAVE_SHA256
free(f_sha256);
#endif
return ret;
}
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