Holger Hans Peter Freyther | 65d67dc | 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 | 567b326 | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 22 | #include <openbsc/debug.h> |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 23 | #include <openbsc/ipaccess.h> |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 24 | #include <openbsc/talloc.h> |
Holger Hans Peter Freyther | 567b326 | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 25 | |
Holger Hans Peter Freyther | bf2bdc6 | 2009-12-23 13:09:27 +0100 | [diff] [blame] | 26 | #include <arpa/inet.h> |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 27 | #include <sys/types.h> |
| 28 | #include <sys/stat.h> |
| 29 | #include <fcntl.h> |
| 30 | #include <unistd.h> |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <string.h> |
| 34 | |
Holger Hans Peter Freyther | 46a920c | 2009-12-29 05:43:57 +0100 | [diff] [blame] | 35 | #define PART_LENGTH 138 |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 36 | |
Holger Hans Peter Freyther | 567b326 | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 37 | static_assert(sizeof(struct sdp_header_entry) == 138, right_entry); |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 38 | static_assert(sizeof(struct sdp_firmware) == 160, _right_header_length); |
Holger Hans Peter Freyther | 567b326 | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 39 | |
Holger Hans Peter Freyther | e0d2ff4 | 2009-12-23 13:03:12 +0100 | [diff] [blame] | 40 | /* more magic, the second "int" in the header */ |
Holger Hans Peter Freyther | 67b05d5 | 2009-12-29 18:41:43 +0100 | [diff] [blame] | 41 | static char more_magic[] = { 0x10, 0x02 }; |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 42 | |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 43 | /* talloc context */ |
| 44 | void *tall_firm_ctx; |
| 45 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 46 | int ipacces_analyze_file(int fd, const unsigned int st_size, const unsigned int base_offset, struct llist_head *list) |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 47 | { |
Holger Hans Peter Freyther | 1684e79 | 2009-12-29 18:23:06 +0100 | [diff] [blame] | 48 | struct sdp_firmware *firmware_header = 0; |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 49 | struct sdp_header *header; |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 50 | char buf[4096]; |
Holger Hans Peter Freyther | 07a4026 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 51 | int rc, i; |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 52 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 53 | rc = read(fd, buf, sizeof(*firmware_header)); |
Holger Hans Peter Freyther | 9094cba | 2009-12-24 10:19:51 +0100 | [diff] [blame] | 54 | if (rc < 0) { |
Holger Hans Peter Freyther | 1029f84 | 2009-12-29 14:27:10 +0100 | [diff] [blame] | 55 | perror("Can not read header start."); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 56 | return -1; |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 57 | } |
| 58 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 59 | firmware_header = (struct sdp_firmware *) &buf[0]; |
| 60 | if (strncmp(firmware_header->magic, " SDP", 4) != 0) { |
Holger Hans Peter Freyther | 9094cba | 2009-12-24 10:19:51 +0100 | [diff] [blame] | 61 | fprintf(stderr, "Wrong magic.\n"); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 62 | return -1; |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 63 | } |
| 64 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 65 | if (memcmp(firmware_header->more_magic, more_magic, 2) != 0) { |
Holger Hans Peter Freyther | 1684e79 | 2009-12-29 18:23:06 +0100 | [diff] [blame] | 66 | fprintf(stderr, "Wrong more magic. Got: 0x%x %x %x %x\n", |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 67 | firmware_header->more_magic[0] & 0xff, firmware_header->more_magic[1] & 0xff, |
| 68 | firmware_header->more_magic[2] & 0xff, firmware_header->more_magic[3] & 0xff); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 69 | return -1; |
Holger Hans Peter Freyther | 1029f84 | 2009-12-29 14:27:10 +0100 | [diff] [blame] | 70 | } |
Holger Hans Peter Freyther | 1684e79 | 2009-12-29 18:23:06 +0100 | [diff] [blame] | 71 | |
| 72 | |
| 73 | if (!firmware_header) |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 74 | return -1; |
Holger Hans Peter Freyther | 1029f84 | 2009-12-29 14:27:10 +0100 | [diff] [blame] | 75 | |
Holger Hans Peter Freyther | e29be15 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 76 | if (ntohl(firmware_header->file_length) != st_size) { |
Holger Hans Peter Freyther | 30b9ecd | 2009-12-27 14:03:11 +0100 | [diff] [blame] | 77 | fprintf(stderr, "The filesize and the header do not match.\n"); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 78 | return -1; |
Holger Hans Peter Freyther | 30b9ecd | 2009-12-27 14:03:11 +0100 | [diff] [blame] | 79 | } |
Holger Hans Peter Freyther | 567b326 | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 80 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 81 | /* add the firmware */ |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 82 | header = talloc_zero(list, struct sdp_header); |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 83 | header->firmware_info = *firmware_header; |
Holger Hans Peter Freyther | c9f8a6d | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 84 | INIT_LLIST_HEAD(&header->header_list); |
| 85 | llist_add(&header->entry, list); |
Holger Hans Peter Freyther | 67b05d5 | 2009-12-29 18:41:43 +0100 | [diff] [blame] | 86 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 87 | /* this semantic appears to be only the case for 0x0000 */ |
| 88 | if (firmware_header->more_more_magic != 0) |
| 89 | return -1; |
Holger Hans Peter Freyther | 67b05d5 | 2009-12-29 18:41:43 +0100 | [diff] [blame] | 90 | |
Holger Hans Peter Freyther | 567b326 | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 91 | if (ntohs(firmware_header->part_length) % PART_LENGTH != 0) { |
| 92 | fprintf(stderr, "The part length seems to be wrong.\n"); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 93 | return -1; |
Holger Hans Peter Freyther | 567b326 | 2009-12-29 06:01:36 +0100 | [diff] [blame] | 94 | } |
Holger Hans Peter Freyther | 07a4026 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 95 | |
| 96 | /* look into each firmware now */ |
Holger Hans Peter Freyther | ebdcee2 | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 97 | for (i = 0; i < ntohs(firmware_header->part_length) / PART_LENGTH; ++i) { |
| 98 | struct sdp_header_entry entry; |
Holger Hans Peter Freyther | 0183edd | 2009-12-30 06:13:36 +0100 | [diff] [blame] | 99 | struct sdp_header_item *header_entry; |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 100 | unsigned int offset = base_offset + sizeof(struct sdp_firmware); |
Holger Hans Peter Freyther | 07a4026 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 101 | offset += i * 138; |
Holger Hans Peter Freyther | ebdcee2 | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 102 | |
| 103 | if (lseek(fd, offset, SEEK_SET) != offset) { |
| 104 | fprintf(stderr, "Can not seek to the offset: %u.\n", offset); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 105 | return -1; |
Holger Hans Peter Freyther | ebdcee2 | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | rc = read(fd, &entry, sizeof(entry)); |
| 109 | if (rc != sizeof(entry)) { |
| 110 | fprintf(stderr, "Can not read the header entry.\n"); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 111 | return -1; |
Holger Hans Peter Freyther | ebdcee2 | 2009-12-29 08:27:21 +0100 | [diff] [blame] | 112 | } |
| 113 | |
Holger Hans Peter Freyther | e29be15 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 114 | /* now we need to find the SDP file... */ |
| 115 | offset = ntohl(entry.start) + 4 + base_offset; |
| 116 | if (lseek(fd, offset, SEEK_SET) != offset) { |
| 117 | perror("can't seek to sdp"); |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 118 | return -1; |
Holger Hans Peter Freyther | e29be15 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 119 | } |
| 120 | |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 121 | header_entry = talloc_zero(header, struct sdp_header_item); |
Holger Hans Peter Freyther | c9f8a6d | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 122 | header_entry->header_entry = entry; |
| 123 | llist_add(&header_entry->entry, &header->header_list); |
| 124 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 125 | ipacces_analyze_file(fd, ntohl(entry.length), offset, list); |
Holger Hans Peter Freyther | 07a4026 | 2009-12-29 08:09:54 +0100 | [diff] [blame] | 126 | } |
Holger Hans Peter Freyther | 8f99562 | 2009-12-30 04:47:27 +0100 | [diff] [blame] | 127 | |
| 128 | return 0; |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | int main(int argc, char** argv) |
| 132 | { |
| 133 | int i, fd; |
Holger Hans Peter Freyther | e29be15 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 134 | struct stat stat; |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 135 | |
| 136 | for (i = 1; i < argc; ++i) { |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 137 | struct sdp_header *header; |
Holger Hans Peter Freyther | 0183edd | 2009-12-30 06:13:36 +0100 | [diff] [blame] | 138 | struct sdp_header_item *sub_entry; |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 139 | struct llist_head *entry; |
| 140 | |
| 141 | entry = talloc_zero(tall_firm_ctx, struct llist_head); |
| 142 | INIT_LLIST_HEAD(entry); |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 143 | |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 144 | printf("Opening possible firmware '%s'\n", argv[i]); |
| 145 | fd = open(argv[i], O_RDONLY); |
| 146 | if (!fd) { |
| 147 | perror("nada"); |
| 148 | continue; |
| 149 | } |
| 150 | |
Holger Hans Peter Freyther | e29be15 | 2009-12-29 13:02:19 +0100 | [diff] [blame] | 151 | /* verify the file */ |
| 152 | if (fstat(fd, &stat) == -1) { |
| 153 | perror("Can not stat the file"); |
| 154 | return EXIT_FAILURE; |
| 155 | } |
| 156 | |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 157 | ipacces_analyze_file(fd, stat.st_size, 0, entry); |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 158 | |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 159 | llist_for_each_entry(header, entry, entry) { |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 160 | printf("Printing header information:\n"); |
| 161 | printf("more_more_magic: 0x%x\n", ntohs(header->firmware_info.more_more_magic)); |
| 162 | printf("header_length: %u\n", ntohl(header->firmware_info.header_length)); |
| 163 | printf("file_length: %u\n", ntohl(header->firmware_info.file_length)); |
| 164 | printf("sw_part: %.20s\n", header->firmware_info.sw_part); |
| 165 | printf("text1: %.64s\n", header->firmware_info.text1); |
| 166 | printf("time: %.12s\n", header->firmware_info.time); |
| 167 | printf("date: %.14s\n", header->firmware_info.date); |
| 168 | printf("text2: %.10s\n", header->firmware_info.text2); |
| 169 | printf("version: %.20s\n", header->firmware_info.version); |
Holger Hans Peter Freyther | c9f8a6d | 2009-12-30 06:10:56 +0100 | [diff] [blame] | 170 | printf("subitems...\n"); |
| 171 | |
| 172 | llist_for_each_entry(sub_entry, &header->header_list, entry) { |
| 173 | printf("\tsomething1: %u\n", sub_entry->header_entry.something1); |
| 174 | printf("\ttext1: %.64s\n", sub_entry->header_entry.text1); |
| 175 | printf("\ttime: %.12s\n", sub_entry->header_entry.time); |
| 176 | printf("\tdate: %.14s\n", sub_entry->header_entry.date); |
| 177 | printf("\ttext2: %.10s\n", sub_entry->header_entry.text2); |
| 178 | printf("\tversion: %.20s\n", sub_entry->header_entry.version); |
| 179 | printf("\tlength: %u\n", ntohl(sub_entry->header_entry.length)); |
| 180 | printf("\taddr1: 0x%x\n", ntohl(sub_entry->header_entry.addr1)); |
| 181 | printf("\taddr2: 0x%x\n", ntohl(sub_entry->header_entry.addr2)); |
| 182 | printf("\tstart: 0x%x\n", ntohl(sub_entry->header_entry.start)); |
| 183 | printf("\n\n"); |
| 184 | } |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 185 | printf("\n\n"); |
| 186 | } |
Holger Hans Peter Freyther | af351a2 | 2009-12-30 06:40:36 +0100 | [diff] [blame^] | 187 | |
| 188 | talloc_free(entry); |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 189 | } |
| 190 | |
Holger Hans Peter Freyther | 4a98cad | 2009-12-30 05:56:49 +0100 | [diff] [blame] | 191 | |
Holger Hans Peter Freyther | 65d67dc | 2009-12-23 12:52:30 +0100 | [diff] [blame] | 192 | return EXIT_SUCCESS; |
| 193 | } |