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/* This file is part of "reprepro"
* Copyright (C) 2006,2007 Bernhard R. Link
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include <config.h>
#include <errno.h>
#include <assert.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <archive.h>
#include <archive_entry.h>
#include "error.h"
#include "uncompression.h"
#include "ar.h"
#include "filelist.h"
#include "debfile.h"
#ifndef HAVE_LIBARCHIVE
#error Why did this file got compiled?
#endif
#if ARCHIVE_VERSION_NUMBER < 3000000
#define archive_read_free archive_read_finish
#endif
static retvalue read_data_tar(/*@out@*/char **list, /*@out@*/size_t *size, const char *debfile, struct ar_archive *ar, struct archive *tar) {
struct archive_entry *entry;
struct filelistcompressor c;
retvalue r;
int a, e;
r = filelistcompressor_setup(&c);
if (RET_WAS_ERROR(r))
return r;
archive_read_support_format_tar(tar);
archive_read_support_format_gnutar(tar);
a = archive_read_open(tar, ar,
ar_archivemember_open,
ar_archivemember_read,
ar_archivemember_close);
if (a != ARCHIVE_OK) {
filelistcompressor_cancel(&c);
e = archive_errno(tar);
if (e == -EINVAL) /* special code to say there is none */
fprintf(stderr,
"open data.tar within '%s' failed: %s\n",
debfile, archive_error_string(tar));
else
fprintf(stderr,
"open data.tar within '%s' failed: %d:%d:%s\n", debfile, a, e,
archive_error_string(tar));
return RET_ERROR;
}
while ((a=archive_read_next_header(tar, &entry)) == ARCHIVE_OK) {
const char *name = archive_entry_pathname(entry);
mode_t mode;
if (name[0] == '.')
name++;
if (name[0] == '/')
name++;
if (name[0] == '\0')
continue;
mode = archive_entry_mode(entry);
if (!S_ISDIR(mode)) {
r = filelistcompressor_add(&c, name, strlen(name));
if (RET_WAS_ERROR(r)) {
filelistcompressor_cancel(&c);
return r;
}
}
if (interrupted()) {
filelistcompressor_cancel(&c);
return RET_ERROR_INTERRUPTED;
}
a = archive_read_data_skip(tar);
if (a != ARCHIVE_OK) {
e = archive_errno(tar);
if (e == -EINVAL) {
r = RET_ERROR;
fprintf(stderr,
"Error skipping %s within data.tar from %s: %s\n",
archive_entry_pathname(entry),
debfile, archive_error_string(tar));
} else {
fprintf(stderr,
"Error %d skipping %s within data.tar from %s: %s\n",
e, archive_entry_pathname(entry),
debfile, archive_error_string(tar));
if (e != 0)
r = RET_ERRNO(e);
else
r = RET_ERROR;
}
filelistcompressor_cancel(&c);
return r;
}
}
if (a != ARCHIVE_EOF) {
e = archive_errno(tar);
if (e == -EINVAL) {
r = RET_ERROR;
fprintf(stderr,
"Error reading data.tar from %s: %s\n", debfile, archive_error_string(tar));
} else {
fprintf(stderr,
"Error %d reading data.tar from %s: %s\n",
e, debfile, archive_error_string(tar));
if (e != 0)
r = RET_ERRNO(e);
else
r = RET_ERROR;
}
filelistcompressor_cancel(&c);
return r;
}
return filelistcompressor_finish(&c, list, size);
}
retvalue getfilelist(/*@out@*/char **filelist, size_t *size, const char *debfile) {
struct ar_archive *ar;
retvalue r;
bool hadcandidate;
bool uncompressedretry = false;
retrylabel:
hadcandidate = false;
r = ar_open(&ar, debfile);
if (RET_WAS_ERROR(r))
return r;
assert (r != RET_NOTHING);
do {
char *filename;
enum compression c;
r = ar_nextmember(ar, &filename);
if (RET_IS_OK(r)) {
if (strncmp(filename, "data.tar", 8) != 0) {
free(filename);
continue;
}
hadcandidate = true;
for (c = 0 ; c < c_COUNT ; c++) {
if (strcmp(filename + 8,
uncompression_suffix[c]) == 0)
break;
}
if (c >= c_COUNT) {
free(filename);
continue;
}
if (uncompressedretry) c = c_none;
ar_archivemember_setcompression(ar, c);
if (uncompression_supported(c)) {
struct archive *tar;
int a;
tar = archive_read_new();
r = read_data_tar(filelist, size,
debfile, ar, tar);
a = archive_read_close(tar);
if (a != ARCHIVE_OK && !RET_WAS_ERROR(r)) {
int e = archive_errno(tar);
if (e == -EINVAL)
fprintf(stderr,
"reading data.tar within '%s' failed: %s\n",
debfile,
archive_error_string(
tar));
else
fprintf(stderr,
"reading data.tar within '%s' failed: %d:%d:%s\n", debfile, a, e,
archive_error_string(
tar));
r = RET_ERROR;
}
a = archive_read_free(tar);
if (a != ARCHIVE_OK && !RET_WAS_ERROR(r)) {
r = RET_ERROR;
}
if (r != RET_NOTHING) {
ar_close(ar);
free(filename);
if ((r == RET_ERROR) && (!uncompressedretry)) {
uncompressedretry = true;
fprintf(stderr,"retrying uncompressed\n");
goto retrylabel;
} else {
return r;
}
}
}
free(filename);
}
} while (RET_IS_OK(r));
ar_close(ar);
if (hadcandidate)
fprintf(stderr,
"Could not find a suitable data.tar file within '%s'!\n", debfile);
else
fprintf(stderr,
"Could not find a data.tar file within '%s'!\n", debfile);
return RET_ERROR_MISSING;
}
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