From 008d0be72b2f160382c6e880765e96b64a050c65 Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 12:04:58 +0100 Subject: imported original firmware WRT54GL_v4.30.11_11_US --- release/src/router/busybox/archival/rpm2cpio.c | 107 +++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 release/src/router/busybox/archival/rpm2cpio.c (limited to 'release/src/router/busybox/archival/rpm2cpio.c') diff --git a/release/src/router/busybox/archival/rpm2cpio.c b/release/src/router/busybox/archival/rpm2cpio.c new file mode 100644 index 00000000..bb9f6957 --- /dev/null +++ b/release/src/router/busybox/archival/rpm2cpio.c @@ -0,0 +1,107 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini rpm2cpio implementation for busybox + * + * Copyright (C) 2001 by Laurence Anderson + * + * This program 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include +#include /* For ntohl & htonl function */ +#include +#include +#include +#include "busybox.h" +#include "unarchive.h" + +#define RPM_MAGIC "\355\253\356\333" +#define RPM_HEADER_MAGIC "\216\255\350" + +struct rpm_lead { + unsigned char magic[4]; + u_int8_t major, minor; + u_int16_t type; + u_int16_t archnum; + char name[66]; + u_int16_t osnum; + u_int16_t signature_type; + char reserved[16]; +}; + +struct rpm_header { + char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */ + u_int8_t version; /* 1 byte version number */ + u_int32_t reserved; /* 4 bytes reserved */ + u_int32_t entries; /* Number of entries in header (4 bytes) */ + u_int32_t size; /* Size of store (4 bytes) */ +}; + +void skip_header(int rpm_fd) +{ + struct rpm_header header; + + bb_xread_all(rpm_fd, &header, sizeof(struct rpm_header)); + if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) { + bb_error_msg_and_die("Invalid RPM header magic"); /* Invalid magic */ + } + if (header.version != 1) { + bb_error_msg_and_die("Unsupported RPM header version"); /* This program only supports v1 headers */ + } + header.entries = ntohl(header.entries); + header.size = ntohl(header.size); + lseek (rpm_fd, 16 * header.entries, SEEK_CUR); /* Seek past index entries */ + lseek (rpm_fd, header.size, SEEK_CUR); /* Seek past store */ +} + +/* No getopt required */ +extern int rpm2cpio_main(int argc, char **argv) +{ + struct rpm_lead lead; + int rpm_fd; + unsigned char magic[2]; + + if (argc == 1) { + rpm_fd = fileno(stdin); + } else { + rpm_fd = bb_xopen(argv[1], O_RDONLY); + } + + bb_xread_all(rpm_fd, &lead, sizeof(struct rpm_lead)); + if (strncmp((char *) &lead.magic, RPM_MAGIC, 4) != 0) { + bb_error_msg_and_die("Invalid RPM magic"); /* Just check the magic, the rest is irrelevant */ + } + + /* Skip the signature header */ + skip_header(rpm_fd); + lseek(rpm_fd, (8 - (lseek(rpm_fd, 0, SEEK_CUR) % 8)) % 8, SEEK_CUR); + + /* Skip the main header */ + skip_header(rpm_fd); + + bb_xread_all(rpm_fd, &magic, 2); + if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) { + bb_error_msg_and_die("Invalid gzip magic"); + } + + check_header_gzip(rpm_fd); + if (inflate(rpm_fd, fileno(stdout)) != 0) { + bb_error_msg("Error inflating"); + } + check_trailer_gzip(rpm_fd); + + close(rpm_fd); + + return 0; +} -- cgit v1.2.3-54-g00ecf