Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 1 | /* Routines for parsing an ipacces SDP firmware file */ |
| 2 | |
| 3 | /* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | */ |
| 21 | |
Holger Hans Peter Freyther | eb9766f | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 22 | #include <openbsc/debug.h> |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 23 | #include <openbsc/ipaccess.h> |
Holger Hans Peter Freyther | eb9766f | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 24 | |
Holger Hans Peter Freyther | 93e2976 | 2009-12-23 13:09:27 +0100 | [diff] [blame] | 25 | #include <arpa/inet.h> |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 26 | #include <sys/types.h> |
| 27 | #include <sys/stat.h> |
| 28 | #include <fcntl.h> |
| 29 | #include <unistd.h> |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <string.h> |
| 33 | |
Holger Hans Peter Freyther | 0a4deca | 2009-12-29 05:43:57 +0100 | [diff] [blame] | 34 | #define PART_LENGTH 138 |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 35 | |
Holger Hans Peter Freyther | eb9766f | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 36 | static_assert(sizeof(struct sdp_header_entry) == 138, right_entry); |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 37 | static_assert(sizeof(struct sdp_firmware) == 160, _right_header_length); |
Holger Hans Peter Freyther | eb9766f | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 38 | |
Holger Hans Peter Freyther | e4cef6c | 2009-12-23 13:03:12 +0100 | [diff] [blame] | 39 | /* more magic, the second "int" in the header */ |
Holger Hans Peter Freyther | b144886 | 2009-12-29 18:41:43 +0100 | [diff] [blame] | 40 | static char more_magic[] = { 0x10, 0x02 }; |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 41 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 42 | int ipacces_analyze_file(int fd, const unsigned int st_size, const unsigned int base_offset, struct llist_head *list) |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 43 | { |
Holger Hans Peter Freyther | 60f3027 | 2009-12-29 18:23:06 +0100 | [diff] [blame] | 44 | struct sdp_firmware *firmware_header = 0; |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 45 | struct sdp_header *header; |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 46 | char buf[4096]; |
Holger Hans Peter Freyther | 21c87d1 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 47 | int rc, i; |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 48 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 49 | rc = read(fd, buf, sizeof(*firmware_header)); |
Holger Hans Peter Freyther | 0306798 | 2009-12-24 10:19:51 +0100 | [diff] [blame] | 50 | if (rc < 0) { |
Holger Hans Peter Freyther | 1fe0a16 | 2009-12-29 14:27:10 +0100 | [diff] [blame] | 51 | perror("Can not read header start."); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 52 | return -1; |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 53 | } |
| 54 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 55 | firmware_header = (struct sdp_firmware *) &buf[0]; |
| 56 | if (strncmp(firmware_header->magic, " SDP", 4) != 0) { |
Holger Hans Peter Freyther | 0306798 | 2009-12-24 10:19:51 +0100 | [diff] [blame] | 57 | fprintf(stderr, "Wrong magic.\n"); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 58 | return -1; |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 59 | } |
| 60 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 61 | if (memcmp(firmware_header->more_magic, more_magic, 2) != 0) { |
Holger Hans Peter Freyther | 60f3027 | 2009-12-29 18:23:06 +0100 | [diff] [blame] | 62 | fprintf(stderr, "Wrong more magic. Got: 0x%x %x %x %x\n", |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 63 | firmware_header->more_magic[0] & 0xff, firmware_header->more_magic[1] & 0xff, |
| 64 | firmware_header->more_magic[2] & 0xff, firmware_header->more_magic[3] & 0xff); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 65 | return -1; |
Holger Hans Peter Freyther | 1fe0a16 | 2009-12-29 14:27:10 +0100 | [diff] [blame] | 66 | } |
Holger Hans Peter Freyther | 60f3027 | 2009-12-29 18:23:06 +0100 | [diff] [blame] | 67 | |
| 68 | |
| 69 | if (!firmware_header) |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 70 | return -1; |
Holger Hans Peter Freyther | 1fe0a16 | 2009-12-29 14:27:10 +0100 | [diff] [blame] | 71 | |
Holger Hans Peter Freyther | a983542 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 72 | if (ntohl(firmware_header->file_length) != st_size) { |
Holger Hans Peter Freyther | b7f5313 | 2009-12-27 14:03:11 +0100 | [diff] [blame] | 73 | fprintf(stderr, "The filesize and the header do not match.\n"); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 74 | return -1; |
Holger Hans Peter Freyther | b7f5313 | 2009-12-27 14:03:11 +0100 | [diff] [blame] | 75 | } |
Holger Hans Peter Freyther | eb9766f | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 76 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 77 | /* add the firmware */ |
| 78 | header = malloc(sizeof(*header)); |
| 79 | header->firmware_info = *firmware_header; |
Holger Hans Peter Freyther | f327f6f | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 80 | INIT_LLIST_HEAD(&header->header_list); |
| 81 | llist_add(&header->entry, list); |
Holger Hans Peter Freyther | b144886 | 2009-12-29 18:41:43 +0100 | [diff] [blame] | 82 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 83 | /* this semantic appears to be only the case for 0x0000 */ |
| 84 | if (firmware_header->more_more_magic != 0) |
| 85 | return -1; |
Holger Hans Peter Freyther | b144886 | 2009-12-29 18:41:43 +0100 | [diff] [blame] | 86 | |
Holger Hans Peter Freyther | eb9766f | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 87 | if (ntohs(firmware_header->part_length) % PART_LENGTH != 0) { |
| 88 | fprintf(stderr, "The part length seems to be wrong.\n"); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 89 | return -1; |
Holger Hans Peter Freyther | eb9766f | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 90 | } |
Holger Hans Peter Freyther | 21c87d1 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 91 | |
| 92 | /* look into each firmware now */ |
Holger Hans Peter Freyther | 1bc845e | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 93 | for (i = 0; i < ntohs(firmware_header->part_length) / PART_LENGTH; ++i) { |
| 94 | struct sdp_header_entry entry; |
Holger Hans Peter Freyther | 0a610e9 | 2009-12-30 06:13:36 +0100 | [diff] [blame^] | 95 | struct sdp_header_item *header_entry; |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 96 | unsigned int offset = base_offset + sizeof(struct sdp_firmware); |
Holger Hans Peter Freyther | 21c87d1 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 97 | offset += i * 138; |
Holger Hans Peter Freyther | 1bc845e | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 98 | |
| 99 | if (lseek(fd, offset, SEEK_SET) != offset) { |
| 100 | fprintf(stderr, "Can not seek to the offset: %u.\n", offset); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 101 | return -1; |
Holger Hans Peter Freyther | 1bc845e | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | rc = read(fd, &entry, sizeof(entry)); |
| 105 | if (rc != sizeof(entry)) { |
| 106 | fprintf(stderr, "Can not read the header entry.\n"); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 107 | return -1; |
Holger Hans Peter Freyther | 1bc845e | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 108 | } |
| 109 | |
Holger Hans Peter Freyther | a983542 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 110 | /* now we need to find the SDP file... */ |
| 111 | offset = ntohl(entry.start) + 4 + base_offset; |
| 112 | if (lseek(fd, offset, SEEK_SET) != offset) { |
| 113 | perror("can't seek to sdp"); |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 114 | return -1; |
Holger Hans Peter Freyther | a983542 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 115 | } |
| 116 | |
Holger Hans Peter Freyther | f327f6f | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 117 | header_entry = malloc(sizeof(*header_entry)); |
| 118 | header_entry->header_entry = entry; |
| 119 | llist_add(&header_entry->entry, &header->header_list); |
| 120 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 121 | ipacces_analyze_file(fd, ntohl(entry.length), offset, list); |
Holger Hans Peter Freyther | 21c87d1 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 122 | } |
Holger Hans Peter Freyther | 4019a98 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 123 | |
| 124 | return 0; |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | int main(int argc, char** argv) |
| 128 | { |
| 129 | int i, fd; |
Holger Hans Peter Freyther | a983542 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 130 | struct stat stat; |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 131 | |
| 132 | for (i = 1; i < argc; ++i) { |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 133 | struct sdp_header *header; |
Holger Hans Peter Freyther | 0a610e9 | 2009-12-30 06:13:36 +0100 | [diff] [blame^] | 134 | struct sdp_header_item *sub_entry; |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 135 | struct llist_head entry; |
| 136 | INIT_LLIST_HEAD(&entry); |
| 137 | |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 138 | printf("Opening possible firmware '%s'\n", argv[i]); |
| 139 | fd = open(argv[i], O_RDONLY); |
| 140 | if (!fd) { |
| 141 | perror("nada"); |
| 142 | continue; |
| 143 | } |
| 144 | |
Holger Hans Peter Freyther | a983542 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 145 | /* verify the file */ |
| 146 | if (fstat(fd, &stat) == -1) { |
| 147 | perror("Can not stat the file"); |
| 148 | return EXIT_FAILURE; |
| 149 | } |
| 150 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 151 | ipacces_analyze_file(fd, stat.st_size, 0, &entry); |
| 152 | |
Holger Hans Peter Freyther | f327f6f | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 153 | llist_for_each_entry(header, &entry, entry) { |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 154 | printf("Printing header information:\n"); |
| 155 | printf("more_more_magic: 0x%x\n", ntohs(header->firmware_info.more_more_magic)); |
| 156 | printf("header_length: %u\n", ntohl(header->firmware_info.header_length)); |
| 157 | printf("file_length: %u\n", ntohl(header->firmware_info.file_length)); |
| 158 | printf("sw_part: %.20s\n", header->firmware_info.sw_part); |
| 159 | printf("text1: %.64s\n", header->firmware_info.text1); |
| 160 | printf("time: %.12s\n", header->firmware_info.time); |
| 161 | printf("date: %.14s\n", header->firmware_info.date); |
| 162 | printf("text2: %.10s\n", header->firmware_info.text2); |
| 163 | printf("version: %.20s\n", header->firmware_info.version); |
Holger Hans Peter Freyther | f327f6f | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 164 | printf("subitems...\n"); |
| 165 | |
| 166 | llist_for_each_entry(sub_entry, &header->header_list, entry) { |
| 167 | printf("\tsomething1: %u\n", sub_entry->header_entry.something1); |
| 168 | printf("\ttext1: %.64s\n", sub_entry->header_entry.text1); |
| 169 | printf("\ttime: %.12s\n", sub_entry->header_entry.time); |
| 170 | printf("\tdate: %.14s\n", sub_entry->header_entry.date); |
| 171 | printf("\ttext2: %.10s\n", sub_entry->header_entry.text2); |
| 172 | printf("\tversion: %.20s\n", sub_entry->header_entry.version); |
| 173 | printf("\tlength: %u\n", ntohl(sub_entry->header_entry.length)); |
| 174 | printf("\taddr1: 0x%x\n", ntohl(sub_entry->header_entry.addr1)); |
| 175 | printf("\taddr2: 0x%x\n", ntohl(sub_entry->header_entry.addr2)); |
| 176 | printf("\tstart: 0x%x\n", ntohl(sub_entry->header_entry.start)); |
| 177 | printf("\n\n"); |
| 178 | } |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 179 | printf("\n\n"); |
Holger Hans Peter Freyther | f327f6f | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 180 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 181 | } |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 182 | } |
| 183 | |
Holger Hans Peter Freyther | 4a00258 | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 184 | |
Holger Hans Peter Freyther | 2281797 | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 185 | return EXIT_SUCCESS; |
| 186 | } |