xbps/lib/plist_fetch.c

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/*-
* Copyright (c) 2009-2011 Juan Romero Pardines.
* Copyright (c) 2008, 2009 Joerg Sonnenberger <joerg (at) NetBSD.org>
* 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.
*-
* From: $NetBSD: pkg_io.c,v 1.9 2009/08/16 21:10:15 joerg Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "xbps_api_impl.h"
#include "fetch.h"
/**
* @file lib/plist_fetch.c
* @brief Package URL metadata files handling
* @defgroup plist_fetch Package URL metadata files handling
*/
struct fetch_archive {
struct url *url;
struct fetchIO *fetch;
char buffer[32768];
};
static int
fetch_archive_open(struct archive *a, void *client_data)
{
struct fetch_archive *f = client_data;
(void)a;
f->fetch = fetchGet(f->url, NULL);
if (f->fetch == NULL)
return ENOENT;
return 0;
}
static ssize_t
fetch_archive_read(struct archive *a, void *client_data, const void **buf)
{
struct fetch_archive *f = client_data;
(void)a;
*buf = f->buffer;
return fetchIO_read(f->fetch, f->buffer, sizeof(f->buffer));
}
static int
fetch_archive_close(struct archive *a, void *client_data)
{
struct fetch_archive *f = client_data;
(void)a;
if (f->fetch != NULL)
fetchIO_close(f->fetch);
free(f);
return 0;
}
static struct archive *
open_archive_by_url(struct url *url)
{
struct fetch_archive *f;
struct archive *a;
f = malloc(sizeof(struct fetch_archive));
if (f == NULL)
return NULL;
f->url = url;
if ((a = archive_read_new()) == NULL) {
free(f);
return NULL;
}
archive_read_support_compression_all(a);
archive_read_support_format_tar(a);
if (archive_read_open(a, f, fetch_archive_open, fetch_archive_read,
fetch_archive_close)) {
archive_read_finish(a);
return NULL;
}
return a;
}
static struct archive *
open_archive(const char *url)
{
struct url *u;
struct archive *a;
if (!xbps_check_is_repository_uri_remote(url)) {
if ((a = archive_read_new()) == NULL)
return NULL;
archive_read_support_compression_all(a);
archive_read_support_format_tar(a);
if (archive_read_open_filename(a, url,
ARCHIVE_READ_BLOCKSIZE)) {
archive_read_close(a);
return NULL;
}
return a;
}
if ((u = fetchParseURL(url)) == NULL)
return NULL;
a = open_archive_by_url(u);
fetchFreeURL(u);
return a;
}
prop_dictionary_t
xbps_dictionary_metadata_plist_by_url(const char *url, const char *plistf)
{
prop_dictionary_t plistd = NULL;
struct archive *a;
struct archive_entry *entry;
const char *curpath, *comptype;
int i = 0;
2011-01-25 08:44:33 +05:30
assert(url != NULL);
assert(plistf != NULL);
if ((a = open_archive(url)) == NULL)
return NULL;
/*
* Save compression type string for future use.
*/
comptype = archive_compression_name(a);
while ((archive_read_next_header(a, &entry)) == ARCHIVE_OK) {
curpath = archive_entry_pathname(entry);
if (strstr(curpath, plistf) == 0) {
archive_read_data_skip(a);
if (i >= 3) {
/*
* Archive does not contain required
* plist file, discard it completely.
*/
errno = ENOENT;
break;
}
i++;
continue;
}
plistd = xbps_dictionary_from_archive_entry(a, entry);
if (plistd == NULL) {
errno = EINVAL;
break;
}
prop_dictionary_set_cstring_nocopy(plistd,
"archive-compression-type", comptype);
break;
}
archive_read_finish(a);
return plistd;
}