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/*
* libdpkg - Debian packaging suite library routines
* ar.c - primitives for ar handling
*
* Copyright © 2010 Guillem Jover <guillem@debian.org>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This 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, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <compat.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <stdint.h>
#include <unistd.h>
#include <dpkg/i18n.h>
#include <dpkg/dpkg.h>
#include <dpkg/fdio.h>
#include <dpkg/buffer.h>
#include <dpkg/ar.h>
void
dpkg_ar_normalize_name(struct ar_hdr *arh)
{
char *name = arh->ar_name;
int i;
/* Remove trailing spaces from the member name. */
for (i = sizeof(arh->ar_name) - 1; i >= 0 && name[i] == ' '; i--)
name[i] = '\0';
/* Remove optional slash terminator (on GNU-style archives). */
if (name[i] == '/')
name[i] = '\0';
}
off_t
dpkg_ar_member_get_size(const char *ar_name, struct ar_hdr *arh)
{
const char *str = arh->ar_size;
int len = sizeof(arh->ar_size);
off_t size = 0;
while (len && *str == ' ')
str++, len--;
while (len--) {
if (*str == ' ')
break;
if (*str < '0' || *str > '9')
ohshit(_("invalid character '%c' in archive '%.250s' "
"member '%.16s' size"),
*str, arh->ar_name, ar_name);
size *= 10;
size += *str++ - '0';
}
return size;
}
bool
dpkg_ar_member_is_illegal(struct ar_hdr *arh)
{
return memcmp(arh->ar_fmag, ARFMAG, sizeof(arh->ar_fmag)) != 0;
}
void
dpkg_ar_put_magic(const char *ar_name, int ar_fd)
{
if (fd_write(ar_fd, DPKG_AR_MAGIC, strlen(DPKG_AR_MAGIC)) < 0)
ohshite(_("unable to write file '%s'"), ar_name);
}
void
dpkg_ar_member_put_header(const char *ar_name, int ar_fd,
const char *name, off_t size)
{
char header[sizeof(struct ar_hdr) + 1];
int n;
n = sprintf(header, "%-16s%-12lu0 0 100644 %-10jd`\n",
name, time(NULL), (intmax_t)size);
if (n != sizeof(struct ar_hdr))
ohshit(_("generated corrupt ar header for '%s'"), ar_name);
if (fd_write(ar_fd, header, n) < 0)
ohshite(_("unable to write file '%s'"), ar_name);
}
void
dpkg_ar_member_put_mem(const char *ar_name, int ar_fd,
const char *name, const void *data, size_t size)
{
dpkg_ar_member_put_header(ar_name, ar_fd, name, size);
/* Copy data contents. */
if (fd_write(ar_fd, data, size) < 0)
ohshite(_("unable to write file '%s'"), ar_name);
if (size & 1)
if (fd_write(ar_fd, "\n", 1) < 0)
ohshite(_("unable to write file '%s'"), ar_name);
}
void
dpkg_ar_member_put_file(const char *ar_name, int ar_fd,
const char *name, int fd, off_t size)
{
if (size <= 0) {
struct stat st;
if (fstat(fd, &st))
ohshite(_("failed to fstat ar member file (%s)"), name);
size = st.st_size;
}
dpkg_ar_member_put_header(ar_name, ar_fd, name, size);
/* Copy data contents. */
fd_fd_copy(fd, ar_fd, size, _("ar member file (%s)"), name);
if (size & 1)
if (fd_write(ar_fd, "\n", 1) < 0)
ohshite(_("unable to write file '%s'"), ar_name);
}
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