1 | /*
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2 | * This program is free software; you can redistribute it and/or modify
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3 | * it under the terms of the GNU General Public License as published by
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4 | * the Free Software Foundation; either version 2 of the License, or
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5 | * (at your option) any later version.
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6 | *
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7 | * This program is distributed in the hope that it will be useful,
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8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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10 | * GNU Library General Public License for more details.
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11 | *
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12 | * You should have received a copy of the GNU General Public License
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13 | * along with this program; if not, write to the Free Software
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14 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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15 | */
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16 |
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17 | #include <stdlib.h>
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18 |
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19 | #include "libbb.h"
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20 | #include "unarchive.h"
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21 |
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22 | char get_header_tar_gz(archive_handle_t *archive_handle)
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23 | {
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24 | unsigned char magic[2];
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25 |
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26 | /* Cant lseek over pipe's */
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27 | archive_handle->seek = seek_by_char;
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28 |
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29 | archive_xread_all(archive_handle, &magic, 2);
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30 | if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
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31 | bb_error_msg_and_die("Invalid gzip magic");
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32 | }
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33 |
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34 | check_header_gzip(archive_handle->src_fd);
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35 |
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36 | archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
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37 | archive_handle->offset = 0;
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38 | while (get_header_tar(archive_handle) == EXIT_SUCCESS);
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39 |
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40 | /* Can only do one file at a time */
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41 | return(EXIT_FAILURE);
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42 | }
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