vp-build/lib/util.c
Juan RP c72bbb0a5b Add func that returns a malloc'ed buffer with the hash string of a file.
--HG--
extra : convert_revision : 66d886c413e0a909ccd678fe1ebdda44ab6fef8a
2009-04-03 12:10:28 +02:00

317 lines
6.1 KiB
C

/*-
* Copyright (c) 2008-2009 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <sys/utsname.h>
#include <xbps_api.h>
static const char *rootdir;
static int flags;
char *
xbps_get_file_hash(const char *file)
{
SHA256_CTX ctx;
char *hash;
uint8_t buf[BUFSIZ * 20], digest[SHA256_DIGEST_LENGTH * 2 + 1];
ssize_t bytes;
int fd;
if ((fd = open(file, O_RDONLY)) == -1)
return NULL;
SHA256_Init(&ctx);
while ((bytes = read(fd, buf, sizeof(buf))) > 0)
SHA256_Update(&ctx, buf, (size_t)bytes);
hash = strdup(SHA256_End(&ctx, digest));
(void)close(fd);
return hash;
}
int
xbps_check_file_hash(const char *path, const char *sha256)
{
char *res;
res = xbps_get_file_hash(path);
if (res == NULL)
return errno;
if (strcmp(sha256, res)) {
free(res);
return ERANGE;
}
free(res);
return 0;
}
int
xbps_check_pkg_file_hash(prop_dictionary_t pkgd, const char *repoloc)
{
const char *sha256, *arch, *filename;
char *binfile, *path;
int rv = 0;
assert(repoloc != NULL);
if (!prop_dictionary_get_cstring_nocopy(pkgd, "filename", &filename))
return EINVAL;
if (!prop_dictionary_get_cstring_nocopy(pkgd, "filename-sha256",
&sha256))
return EINVAL;
if (!prop_dictionary_get_cstring_nocopy(pkgd, "architecture", &arch))
return EINVAL;
path = xbps_append_full_path(false, repoloc, arch);
if (path == NULL)
return EINVAL;
binfile = xbps_append_full_path(false, path, filename);
if (binfile == NULL) {
free(path);
return EINVAL;
}
free(path);
printf("Checking SHA256 for %s ... ", filename);
(void)fflush(stdout);
rv = xbps_check_file_hash(binfile, sha256);
if (rv != 0 && rv != ERANGE)
printf("failed (%s)\n", strerror(rv));
else if (rv == ERANGE)
printf("failed! aborting installation.\n");
else if (rv == 0)
printf("ok.\n");
(void)fflush(stdout);
free(binfile);
return rv;
}
int
xbps_check_is_installed_pkg(const char *pkg)
{
prop_dictionary_t dict;
const char *reqver, *instver;
char *pkgname;
int rv = 0;
assert(pkg != NULL);
pkgname = xbps_get_pkg_name(pkg);
reqver = xbps_get_pkg_version(pkg);
dict = xbps_find_pkg_installed_from_plist(pkgname);
if (dict == NULL) {
free(pkgname);
return -1; /* not installed */
}
/* Get version from installed package */
prop_dictionary_get_cstring_nocopy(dict, "version", &instver);
/* Compare installed and required version. */
rv = xbps_cmpver_versions(instver, reqver);
free(pkgname);
prop_object_release(dict);
return rv;
}
bool
xbps_check_is_installed_pkgname(const char *pkgname)
{
prop_dictionary_t pkgd;
assert(pkgname != NULL);
pkgd = xbps_find_pkg_installed_from_plist(pkgname);
if (pkgd) {
prop_object_release(pkgd);
return true;
}
return false;
}
const char *
xbps_get_pkg_version(const char *pkg)
{
const char *tmp;
assert(pkg != NULL);
/* Get the required version */
tmp = strrchr(pkg, '-');
if (tmp == NULL)
return NULL;
return tmp + 1; /* skip first '-' */
}
char *
xbps_get_pkg_name(const char *pkg)
{
const char *tmp;
char *pkgname;
size_t len = 0;
assert(pkg != NULL);
/* Get package name */
tmp = strrchr(pkg, '-');
if (tmp == NULL)
return NULL;
len = strlen(pkg) - strlen(tmp) + 1;
pkgname = malloc(len);
memcpy(pkgname, pkg, len - 1);
pkgname[len - 1] = '\0';
return pkgname;
}
char *
xbps_get_pkg_index_plist(const char *path)
{
struct utsname un;
char *plist, *p;
assert(path != NULL);
if (uname(&un) == -1)
return NULL;
p = xbps_append_full_path(false, path, un.machine);
if (p == NULL)
return NULL;
plist = xbps_append_full_path(false, p, XBPS_PKGINDEX);
if (plist == NULL) {
free(p);
return NULL;
}
free(p);
return plist;
}
bool
xbps_pkg_has_rundeps(prop_dictionary_t pkg)
{
prop_array_t array;
assert(pkg != NULL);
array = prop_dictionary_get(pkg, "run_depends");
if (array && prop_array_count(array) > 0)
return true;
return false;
}
void
xbps_set_rootdir(const char *dir)
{
assert(dir != NULL);
rootdir = dir;
}
const char *
xbps_get_rootdir(void)
{
return rootdir;
}
void
xbps_set_flags(int lflags)
{
flags = lflags;
}
int
xbps_get_flags(void)
{
return flags;
}
char *
xbps_append_full_path(bool use_rootdir, const char *basedir, const char *plist)
{
const char *env;
char *buf = NULL;
size_t len = 0;
assert(plist != NULL);
if (basedir)
env = basedir;
else
env = XBPS_META_PATH;
if (rootdir && use_rootdir) {
len = strlen(rootdir) + strlen(env) + strlen(plist) + 2;
buf = malloc(len + 1);
if (buf == NULL) {
errno = ENOMEM;
return NULL;
}
if (snprintf(buf, len + 1, "%s/%s/%s",
rootdir, env, plist) < 0) {
errno = ENOSPC;
return NULL;
}
} else {
len = strlen(env) + strlen(plist) + 1;
buf = malloc(len + 1);
if (buf == NULL) {
errno = ENOMEM;
return NULL;
}
if (snprintf(buf, len + 1, "%s/%s", env, plist) < 0) {
errno = ENOSPC;
return NULL;
}
}
return buf;
}