void-packages/lib/install.c

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/*-
* Copyright (c) 2008 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 <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include <xbps_api.h>
int
xbps_install_binary_pkg_from_repolist(prop_object_t obj, void *arg,
bool *loop_done)
{
prop_dictionary_t repod, pkgrd;
const char *pkgname = arg, *version, *desc;
char *plist;
int rv = 0;
/*
* Get the dictionary from a repository's index file.
*/
plist = xbps_append_full_path(false,
prop_string_cstring_nocopy(obj), XBPS_PKGINDEX);
if (plist == NULL)
return EINVAL;
repod = prop_dictionary_internalize_from_file(plist);
if (repod == NULL) {
free(plist);
return EINVAL;
}
/*
* Get the package dictionary from current repository.
*/
pkgrd = xbps_find_pkg_in_dict(repod, pkgname);
if (pkgrd == NULL) {
free(plist);
prop_object_release(repod);
return XBPS_PKG_ENOTINREPO;
}
prop_dictionary_get_cstring_nocopy(pkgrd, "version", &version);
prop_dictionary_get_cstring_nocopy(pkgrd, "short_desc", &desc);
assert(version != NULL);
assert(desc != NULL);
/*
* Check if this package needs dependencies.
*/
if (!xbps_pkg_has_rundeps(pkgrd)) {
/* pkg has no deps, just install it. */
rv = xbps_unpack_binary_pkg(repod, pkgrd,
xbps_unpack_archive_cb);
if (rv == 0) {
rv = xbps_register_pkg(pkgname, version, desc);
if (rv == EEXIST)
rv = 0;
}
free(plist);
prop_object_release(repod);
*loop_done = true;
return rv;
}
/*
* Install all required dependencies.
*/
rv = xbps_install_pkg_deps(pkgrd);
if (rv != 0) {
free(plist);
prop_object_release(repod);
return rv;
}
/*
* Finally install the package, now that all
* required dependencies were installed.
*/
rv = xbps_unpack_binary_pkg(repod, pkgrd, xbps_unpack_archive_cb);
if (rv == 0) {
rv = xbps_register_pkg(pkgname, version, desc);
if (rv == EEXIST)
rv = 0;
}
free(plist);
prop_object_release(repod);
*loop_done = true;
return rv;
}
int
xbps_install_binary_pkg(const char *pkgname, const char *destdir)
{
prop_dictionary_t repolistd;
char *plist;
int rv = 0;
assert(pkgname != NULL);
if (destdir) {
if ((rv = chdir(destdir)) != 0)
return errno;
}
/*
* Get the dictionary with the list of registered
* repositories.
*/
plist = xbps_append_full_path(true, NULL, XBPS_REPOLIST);
if (plist == NULL)
return EINVAL;
repolistd = prop_dictionary_internalize_from_file(plist);
if (repolistd == NULL) {
free(plist);
return EINVAL;
}
/*
* Iterate over the repositories to find the binary packages
* required by this package.
*/
rv = xbps_callback_array_iter_in_dict(repolistd, "repository-list",
xbps_install_binary_pkg_from_repolist, (void *)pkgname);
free(plist);
prop_object_release(repolistd);
return rv;
}
static prop_dictionary_t
make_dict_from_pkg(const char *name, const char *ver, const char *desc)
{
prop_dictionary_t dict;
dict = prop_dictionary_create();
assert(dict != NULL);
prop_dictionary_set_cstring_nocopy(dict, "pkgname", name);
prop_dictionary_set_cstring_nocopy(dict, "version", ver);
prop_dictionary_set_cstring_nocopy(dict, "short_desc", desc);
return dict;
}
int
xbps_register_pkg(const char *pkgname, const char *version, const char *desc)
{
prop_dictionary_t dict, pkgd;
prop_array_t array;
char *plist;
int rv = 0;
assert(pkgname != NULL);
assert(version != NULL);
assert(desc != NULL);
plist = xbps_append_full_path(true, NULL, XBPS_REGPKGDB);
if (plist == NULL)
return EINVAL;
dict = prop_dictionary_internalize_from_file(plist);
if (dict == NULL) {
/* No packages registered yet. */
dict = prop_dictionary_create();
if (dict == NULL) {
free(plist);
return ENOMEM;
}
array = prop_array_create();
if (array == NULL) {
free(plist);
prop_object_release(dict);
return ENOMEM;
}
pkgd = make_dict_from_pkg(pkgname, version, desc);
if (!xbps_add_obj_to_array(array, pkgd)) {
prop_object_release(array);
prop_object_release(dict);
prop_object_release(pkgd);
free(plist);
return EINVAL;
}
if (!xbps_add_obj_to_dict(dict, array, "packages")) {
prop_object_release(array);
prop_object_release(dict);
free(plist);
return EINVAL;
}
} else {
/* Check if package is already registered. */
pkgd = xbps_find_pkg_in_dict(dict, pkgname);
if (pkgd != NULL) {
prop_object_release(dict);
free(plist);
return EEXIST;
}
pkgd = make_dict_from_pkg(pkgname, version, desc);
array = prop_dictionary_get(dict, "packages");
assert(array != NULL);
if (!xbps_add_obj_to_array(array, pkgd)) {
prop_object_release(pkgd);
prop_object_release(dict);
free(plist);
return EINVAL;
}
}
if (!prop_dictionary_externalize_to_file(dict, plist))
rv = errno;
prop_object_release(dict);
free(plist);
return rv;
}
/*
* Flags for extracting files in binary packages.
*/
#define EXTRACT_FLAGS ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM | \
ARCHIVE_EXTRACT_TIME | \
ARCHIVE_EXTRACT_SECURE_NODOTDOT | \
ARCHIVE_EXTRACT_SECURE_SYMLINKS | \
ARCHIVE_EXTRACT_UNLINK
int
xbps_unpack_archive_cb(struct archive *ar, const char *pkgname)
{
struct archive_entry *entry;
char buf[PATH_MAX];
int rv = 0, flags;
bool actgt = false;
if (geteuid() == 0)
flags = EXTRACT_FLAGS;
else
flags = 0;
if (snprintf(buf, sizeof(buf) - 1, ".%s/metadata/%s/prepost-action.sh",
XBPS_META_PATH, pkgname) < 0)
return -1;
while (archive_read_next_header(ar, &entry) == ARCHIVE_OK) {
/*
* Run the pre installation action target if there's a script
* before writing data to disk.
*/
if (strcmp(buf, archive_entry_pathname(entry)) == 0) {
actgt = true;
if ((rv = archive_read_extract(ar, entry, flags)) != 0)
break;
if ((rv = xbps_file_exec(buf, "preinst")) != 0) {
printf("%s: preinst action target error %s\n",
pkgname, strerror(errno));
(void)fflush(stdout);
break;
}
/* pass to the next entry if successful */
continue;
}
/*
* Extract all data from the archive now.
*/
if ((rv = archive_read_extract(ar, entry, flags)) != 0) {
printf("\ncouldn't unpack %s (%s), exiting!\n",
archive_entry_pathname(entry), strerror(errno));
(void)fflush(stdout);
archive_entry_free(entry);
break;
}
}
if (rv == 0 && actgt) {
/*
* Run the post installaction action target, if package
* contains the script.
*/
if ((rv = xbps_file_exec(buf, "postinst")) != 0) {
printf("%s: postinst action target error %s\n",
pkgname, strerror(errno));
(void)fflush(stdout);
}
}
return rv;
}
int
xbps_unpack_binary_pkg(prop_dictionary_t repo, prop_dictionary_t pkg,
int (*cb)(struct archive *, const char *))
{
prop_string_t pkgname, version, filename, repoloc;
struct archive *ar;
char *binfile;
int pkg_fd, rv;
assert(pkg != NULL);
assert(repo != NULL);
assert(cb != NULL);
/* Append filename to the full path for binary pkg */
filename = prop_dictionary_get(pkg, "filename");
repoloc = prop_dictionary_get(repo, "location-local");
binfile= xbps_append_full_path(false,
prop_string_cstring_nocopy(repoloc),
prop_string_cstring_nocopy(filename));
if (binfile == NULL)
return EINVAL;
if ((pkg_fd = open(binfile, O_RDONLY)) == -1) {
free(binfile);
return errno;
}
pkgname = prop_dictionary_get(pkg, "pkgname");
version = prop_dictionary_get(pkg, "version");
printf("Installing %s-%s (%s) ...\n",
prop_string_cstring_nocopy(pkgname),
prop_string_cstring_nocopy(version),
prop_string_cstring_nocopy(filename));
(void)fflush(stdout);
ar = archive_read_new();
if (ar == NULL) {
free(binfile);
close(pkg_fd);
return ENOMEM;
}
/* Enable support for all format and compression methods */
archive_read_support_compression_all(ar);
archive_read_support_format_all(ar);
if ((rv = archive_read_open_fd(ar, pkg_fd, 2048)) != 0) {
archive_read_finish(ar);
free(binfile);
close(pkg_fd);
return rv;
}
rv = (*cb)(ar, prop_string_cstring_nocopy(pkgname));
/*
* If installation of package was successful, make sure the package
* is really on storage (if possible).
*/
if (rv == 0)
if ((rv = fdatasync(pkg_fd)) == -1)
rv = errno;
archive_read_finish(ar);
close(pkg_fd);
free(binfile);
return rv;
}