void-packages/lib/util.c

361 lines
6.6 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 <stdarg.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <limits.h>
#include <sys/utsname.h>
#include <xbps_api.h>
static bool question(bool, const char *, va_list);
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_STRING_LENGTH];
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;
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;
binfile = xbps_xasprintf("%s/%s/%s", repoloc, arch, filename);
if (binfile == NULL)
return EINVAL;
rv = xbps_check_file_hash(binfile, sha256);
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 -2; /* not installed */
}
/* Get version from installed package */
prop_dictionary_get_cstring_nocopy(dict, "version", &instver);
/* Compare installed and required version. */
rv = xbps_cmpver(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 '-' */
}
const char *
xbps_get_pkg_revision(const char *pkg)
{
const char *tmp;
assert(pkg != NULL);
/* Get the required revision */
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;
assert(path != NULL);
if (uname(&un) == -1)
return NULL;
return xbps_xasprintf("%s/%s/%s", path, un.machine, XBPS_PKGINDEX);
}
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)
{
if (rootdir == NULL)
rootdir = "";
return rootdir;
}
void
xbps_set_flags(int lflags)
{
flags = lflags;
}
int
xbps_get_flags(void)
{
return flags;
}
char *
xbps_xasprintf(const char *fmt, ...)
{
va_list ap;
char *buf;
va_start(ap, fmt);
if (vasprintf(&buf, fmt, ap) == -1)
return NULL;
va_end(ap);
return buf;
}
/*
* The following functions were taken from pacman (src/pacman/util.c)
* Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
*/
bool
xbps_yesno(const char *fmt, ...)
{
va_list ap;
bool res;
va_start(ap, fmt);
res = question(1, fmt, ap);
va_end(ap);
return res;
}
bool
xbps_noyes(const char *fmt, ...)
{
va_list ap;
bool res;
va_start(ap, fmt);
res = question(0, fmt, ap);
va_end(ap);
return res;
}
static char *
strtrim(char *str)
{
char *pch = str;
if (str == NULL || *str == '\0')
return str;
while (isspace((unsigned char)*pch))
pch++;
if (pch != str)
memmove(str, pch, (strlen(pch) + 1));
if (*str == '\0')
return str;
pch = (str + (strlen(str) - 1));
while (isspace((unsigned char)*pch))
pch--;
*++pch = '\0';
return str;
}
static bool
question(bool preset, const char *fmt, va_list ap)
{
char response[32];
vfprintf(stderr, fmt, ap);
if (preset)
fprintf(stderr, " %s ", "[Y/n]");
else
fprintf(stderr, " %s ", "[y/N]");
if (fgets(response, 32, stdin)) {
(void)strtrim(response);
if (strlen(response) == 0)
return preset;
if ((strcasecmp(response, "y") == 0) ||
(strcasecmp(response, "yes") == 0))
return true;
else if ((strcasecmp(response, "n") == 0) ||
(strcasecmp(response, "no") == 0))
return false;
}
return false;
}