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New dependency/install/unpack WIP code.

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This implementation will be faster and resolv the dependency chain
correctly taking into account indirect/direct deps and priority.

--HG--
extra : convert_revision : cc4ec186f06f944fa8825b176344c4d612658f85
This commit is contained in:
Juan RP 2009-02-07 13:27:24 +01:00
parent 3f72a92c98
commit 61f0b09698
12 changed files with 712 additions and 512 deletions
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218
lib/unpack.c Normal file
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/*-
* 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 <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include <xbps_api.h>
static int unpack_archive_init(prop_dictionary_t, const char *, const char *);
static int unpack_archive_fini(struct archive *, const char *,
prop_dictionary_t);
int
xbps_unpack_binary_pkg(prop_dictionary_t repo, prop_dictionary_t pkg,
const char *destdir,
void (*cb_print)(prop_dictionary_t))
{
prop_string_t filename, repoloc;
char *binfile;
int rv = 0;
assert(pkg != NULL);
/* Append filename to the full path for binary pkg */
filename = prop_dictionary_get(pkg, "filename");
if (repo)
repoloc = prop_dictionary_get(repo, "location-local");
else
repoloc = prop_dictionary_get(pkg, "location-local");
binfile = xbps_append_full_path(false,
prop_string_cstring_nocopy(repoloc),
prop_string_cstring_nocopy(filename));
if (binfile == NULL)
return EINVAL;
if (cb_print)
(*cb_print)(pkg);
rv = unpack_archive_init(pkg, destdir, binfile);
free(binfile);
return rv;
}
static int
unpack_archive_init(prop_dictionary_t pkg, const char *destdir,
const char *binfile)
{
struct archive *ar;
int pkg_fd, rv;
assert(pkg != NULL);
assert(binfile != NULL);
if ((pkg_fd = open(binfile, O_RDONLY)) == -1)
return errno;
ar = archive_read_new();
if (ar == NULL) {
(void)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);
/* 2048 is arbitrary... dunno what value is better. */
if ((rv = archive_read_open_fd(ar, pkg_fd, 2048)) != 0) {
archive_read_finish(ar);
(void)close(pkg_fd);
return rv;
}
rv = unpack_archive_fini(ar, destdir, pkg);
/*
* 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);
(void)close(pkg_fd);
return rv;
}
/*
* Flags for extracting files in binary packages.
* TODO: change this for non root users.
*/
#define EXTRACT_FLAGS ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM | \
ARCHIVE_EXTRACT_TIME | \
ARCHIVE_EXTRACT_SECURE_NODOTDOT | \
ARCHIVE_EXTRACT_SECURE_SYMLINKS | \
ARCHIVE_EXTRACT_UNLINK
/*
* TODO: remove printfs and return appropiate errors to be interpreted by
* the consumer.
*/
static int
unpack_archive_fini(struct archive *ar, const char *destdir,
prop_dictionary_t pkg)
{
struct archive_entry *entry;
size_t len;
const char *prepost = "./XBPS_PREPOST_INSTALL";
const char *pkgname, *version;
char *buf;
int rv = 0;
bool actgt = false;
assert(ar != NULL);
assert(pkg != NULL);
prop_dictionary_get_cstring_nocopy(pkg, "pkgname", &pkgname);
prop_dictionary_get_cstring_nocopy(pkg, "version", &version);
/*
* This length is '.%s/metadata/%s/prepost-inst' not
* including nul.
*/
len = strlen(XBPS_META_PATH) + strlen(pkgname) + 24;
buf = malloc(len + 1);
if (buf == NULL)
return ENOMEM;
if (snprintf(buf, len + 1, ".%s/metadata/%s/prepost-inst",
XBPS_META_PATH, pkgname) < 0) {
free(buf);
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(prepost, archive_entry_pathname(entry)) == 0) {
actgt = true;
archive_entry_set_pathname(entry, buf);
if ((rv = archive_read_extract(ar, entry,
EXTRACT_FLAGS)) != 0)
break;
if ((rv = xbps_file_exec(buf, destdir, "pre",
pkgname, version, NULL)) != 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,
EXTRACT_FLAGS)) != 0) {
printf("\ncouldn't unpack %s (%s), exiting!\n",
archive_entry_pathname(entry), strerror(errno));
(void)fflush(stdout);
break;
}
}
if (rv == 0 && actgt) {
/*
* Run the post installaction action target, if package
* contains the script.
*/
if ((rv = xbps_file_exec(buf, destdir, "post",
pkgname, version, NULL)) != 0) {
printf("%s: postinst action target error %s\n",
pkgname, strerror(errno));
(void)fflush(stdout);
}
}
free(buf);
return rv;
}