vp-build/lib/util.c
Juan RP 9f108b4cd2 xbps-bin: implemented (WIP) "autoupdate" target.
Some parts in the library related to findings pkgs in repositories
has been improved vastly by caching the dictionary once.

Duplicated code has been added in xbps-bin/install.c, but will
be fixed soon.

--HG--
extra : convert_revision : 2924012a8589a2a6ecaa3863b5091049006c0ef3
2009-05-17 04:09:26 +02:00

361 lines
6.7 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_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;
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_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 '-' */
}
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;
}