xbps/lib/archive.c

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/*-
* Copyright (c) 2008-2014 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 "xbps_api_impl.h"
char HIDDEN *
xbps_archive_get_file(struct archive *ar, struct archive_entry *entry)
{
size_t buflen;
ssize_t nbytes = -1;
char *buf;
assert(ar != NULL);
assert(entry != NULL);
buflen = (size_t)archive_entry_size(entry);
buf = malloc(buflen+1);
if (buf == NULL)
return NULL;
nbytes = archive_read_data(ar, buf, buflen);
if ((size_t)nbytes != buflen) {
free(buf);
return NULL;
}
buf[buflen] = '\0';
return buf;
}
xbps_dictionary_t HIDDEN
xbps_archive_get_dictionary(struct archive *ar, struct archive_entry *entry)
{
xbps_dictionary_t d = NULL;
char *buf;
if ((buf = xbps_archive_get_file(ar, entry)) == NULL)
return NULL;
/* If blob is already a dictionary we are done */
d = xbps_dictionary_internalize(buf);
free(buf);
return d;
}
int
xbps_archive_append_buf(struct archive *ar, const void *buf, const size_t buflen,
const char *fname, const mode_t mode, const char *uname, const char *gname)
{
struct archive_entry *entry;
assert(ar);
assert(buf);
assert(fname);
assert(uname);
assert(gname);
entry = archive_entry_new();
if (entry == NULL)
return archive_errno(ar);
archive_entry_set_filetype(entry, AE_IFREG);
archive_entry_set_perm(entry, mode);
archive_entry_set_uname(entry, uname);
archive_entry_set_gname(entry, gname);
archive_entry_set_pathname(entry, fname);
archive_entry_set_size(entry, buflen);
if (archive_write_header(ar, entry) != ARCHIVE_OK) {
archive_entry_free(entry);
return archive_errno(ar);
}
if (archive_write_data(ar, buf, buflen) != ARCHIVE_OK) {
archive_entry_free(entry);
return archive_errno(ar);
}
if (archive_write_finish_entry(ar) != ARCHIVE_OK) {
archive_entry_free(entry);
return archive_errno(ar);
}
archive_entry_free(entry);
return 0;
}