openwrt/upstream - upstream openwrt

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Diffstat (limited to 'package/libnl')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> * * This tool was based on: * TP-Link WR941 V2 firmware checksum fixing tool. * Copyright (C) 2008,2009 Wang Jian <lark@linux.net.cn> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. * */ #include <stdio.h> #include <stdlib.h> #include <stdint.h> #include <string.h> #include <unistd.h> /* for unlink() */ #include <libgen.h> #include <getopt.h> /* for getopt() */ #include <stdarg.h> #include <errno.h> #include <sys/stat.h> #include "md5.h" #if (__BYTE_ORDER == __BIG_ENDIAN) # define HOST_TO_BE32(x) (x) # define BE32_TO_HOST(x) (x) #else # define HOST_TO_BE32(x) bswap_32(x) # define BE32_TO_HOST(x) bswap_32(x) #endif #define HEADER_VERSION_V1 0x01000000 #define HWID_TL_MR3220_V1 0x32200001 #define HWID_TL_MR3420_V1 0x34200001 #define HWID_TL_WA901ND_V1 0x09010001 #define HWID_TL_WA901ND_V2 0x09010002 #define HWID_TL_WR741ND_V1 0x07410001 #define HWID_TL_WR740N_V1 0x07400001 #define HWID_TL_WR841N_V1_5 0x08410002 #define HWID_TL_WR841ND_V3 0x08410003 #define HWID_TL_WR841ND_V5 0x08410005 #define HWID_TL_WR841ND_V7 0x08410007 #define HWID_TL_WR941ND_V2 0x09410002 #define HWID_TL_WR941ND_V4 0x09410004 #define HWID_TL_WR1043ND_V1 0x10430001 #define MD5SUM_LEN 16 struct file_info { char *file_name; /* name of the file */ uint32_t file_size; /* length of the file */ }; struct fw_header { uint32_t version; /* header version */ char vendor_name[24]; char fw_version[36]; uint32_t hw_id; /* hardware id */ uint32_t hw_rev; /* hardware revision */ uint32_t unk1; uint8_t md5sum1[MD5SUM_LEN]; uint32_t unk2; uint8_t md5sum2[MD5SUM_LEN]; uint32_t unk3; uint32_t kernel_la; /* kernel load address */ uint32_t kernel_ep; /* kernel entry point */ uint32_t fw_length; /* total length of the firmware */ uint32_t kernel_ofs; /* kernel data offset */ uint32_t kernel_len; /* kernel data length */ uint32_t rootfs_ofs; /* rootfs data offset */ uint32_t rootfs_len; /* rootfs data length */ uint32_t boot_ofs; /* bootloader data offset */ uint32_t boot_len; /* bootloader data length */ uint8_t pad[360]; } __attribute__ ((packed)); struct board_info { char *id; uint32_t hw_id; uint32_t hw_rev; uint32_t fw_max_len; uint32_t kernel_la; uint32_t kernel_ep; uint32_t rootfs_ofs; }; /* * Globals */ static char *ofname; static char *progname; static char *vendor = "TP-LINK Technologies"; static char *version = "ver. 1.0"; static char *board_id; static struct board_info *board; static struct file_info kernel_info; static uint32_t kernel_la = 0; static uint32_t kernel_ep = 0; static struct file_info rootfs_info; static uint32_t rootfs_ofs = 0; static struct file_info boot_info; static int combined; static int strip_padding; static struct file_info inspect_info; static int extract = 0; char md5salt_normal[MD5SUM_LEN] = { 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb, 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38, }; char md5salt_boot[MD5SUM_LEN] = { 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa, 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42, }; static struct board_info boards[] = { { .id = "TL-MR3220v1", .hw_id = HWID_TL_MR3220_V1, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-MR3420v1", .hw_id = HWID_TL_MR3420_V1, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WA901NDv1", .hw_id = HWID_TL_WA901ND_V1, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WA901NDv2", .hw_id = HWID_TL_WA901ND_V2, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR741NDv1", .hw_id = HWID_TL_WR741ND_V1, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR740Nv1", .hw_id = HWID_TL_WR740N_V1, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR841Nv1.5", .hw_id = HWID_TL_WR841N_V1_5, .hw_rev = 2, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR841NDv3", .hw_id = HWID_TL_WR841ND_V3, .hw_rev = 3, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR841NDv5", .hw_id = HWID_TL_WR841ND_V5, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR841NDv7", .hw_id = HWID_TL_WR841ND_V7, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR941NDv2", .hw_id = HWID_TL_WR941ND_V2, .hw_rev = 2, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR941NDv4", .hw_id = HWID_TL_WR941ND_V4, .hw_rev = 1, .fw_max_len = 0x3c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { .id = "TL-WR1043NDv1", .hw_id = HWID_TL_WR1043ND_V1, .hw_rev = 1, .fw_max_len = 0x7c0000, .kernel_la = 0x80060000, .kernel_ep = 0x80060000, .rootfs_ofs = 0x140000, }, { /* terminating entry */ } }; /* * Message macros */ #define ERR(fmt, ...) do { \ fflush(0); \ fprintf(stderr, "[%s] *** error: " fmt "\n", \ progname, ## __VA_ARGS__ ); \ } while (0) #define ERRS(fmt, ...) do { \ int save = errno; \ fflush(0); \ fprintf(stderr, "[%s] *** error: " fmt "\n", \ progname, ## __VA_ARGS__, strerror(save)); \ } while (0) #define DBG(fmt, ...) do { \ fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \ } while (0) static struct board_info *find_board(char *id) { struct board_info *ret; struct board_info *board; ret = NULL; for (board = boards; board->id != NULL; board++){ if (strcasecmp(id, board->id) == 0) { ret = board; break; } }; return ret; } static struct board_info *find_board_by_hwid(uint32_t hw_id) { struct board_info *board; for (board = boards; board->id != NULL; board++) { if (hw_id == board->hw_id) return board; }; return NULL; } static void usage(int status) { FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout; struct board_info *board; fprintf(stream, "Usage: %s [OPTIONS...]\n", progname); fprintf(stream, "\n" "Options:\n" " -B <board> create image for the board specified with <board>\n" " -c use combined kernel image\n" " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n" " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n" " -k <file> read kernel image from the file <file>\n" " -r <file> read rootfs image from the file <file>\n" " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n" " -o <file> write output to the file <file>\n" " -s strip padding from the end of the image\n" " -N <vendor> set image vendor to <vendor>\n" " -V <version> set image version to <version>\n" " -i <file> inspect given firmware file <file>\n" " -x extract kernel and rootfs while inspecting (requires -i)\n" " -h show this screen\n" ); exit(status); } static int get_md5(char *data, int size, char *md5) { MD5_CTX ctx; MD5_Init(&ctx); MD5_Update(&ctx, data, size); MD5_Final(md5, &ctx); } static int get_file_stat(struct file_info *fdata) { struct stat st; int res; if (fdata->file_name == NULL) return 0; res = stat(fdata->file_name, &st); if (res){ ERRS("stat failed on %s", fdata->file_name); return res; } fdata->file_size = st.st_size; return 0; } static int read_to_buf(struct file_info *fdata, char *buf) { FILE *f; int ret = EXIT_FAILURE; f = fopen(fdata->file_name, "r"); if (f == NULL) { ERRS("could not open \"%s\" for reading", fdata->file_name); goto out; } errno = 0; fread(buf, fdata->file_size, 1, f); if (errno != 0) { ERRS("unable to read from file \"%s\"", fdata->file_name); goto out_close; } ret = EXIT_SUCCESS; out_close: fclose(f); out: return ret; } static int check_options(void) { int ret; if (inspect_info.file_name) { ret = get_file_stat(&inspect_info); if (ret) return ret; return 0; } else if (extract) { ERR("no firmware for inspection specified"); return -1; } if (board_id == NULL) { ERR("no board specified"); return -1; } board = find_board(board_id); if (board == NULL) { ERR("unknown/unsupported board id \"%s\"", board_id); return -1; } if (!kernel_la) kernel_la = board->kernel_la; if (!kernel_ep) kernel_ep = board->kernel_ep; if (!rootfs_ofs) rootfs_ofs = board->rootfs_ofs; if (kernel_info.file_name == NULL) { ERR("no kernel image specified"); return -1; } ret = get_file_stat(&kernel_info); if (ret) return ret; if (combined) { if (kernel_info.file_size > board->fw_max_len - sizeof(struct fw_header)) { ERR("kernel image is too big"); return -1; } } else { if (kernel_info.file_size > rootfs_ofs - sizeof(struct fw_header)) { ERR("kernel image is too big"); return -1; } if (rootfs_info.file_name == NULL) { ERR("no rootfs image specified"); return -1; } ret = get_file_stat(&rootfs_info); if (ret) return ret; if (rootfs_info.file_size > (board->fw_max_len - rootfs_ofs)) { ERR("rootfs image is too big"); return -1; } } if (ofname == NULL) { ERR("no output file specified"); return -1; } return 0; } static void fill_header(char *buf, int len) { struct fw_header *hdr = (struct fw_header *)buf; memset(hdr, 0, sizeof(struct fw_header)); hdr->version = HOST_TO_BE32(HEADER_VERSION_V1); strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name)); strncpy(hdr->fw_version, version, sizeof(hdr->fw_version)); hdr->hw_id = HOST_TO_BE32(board->hw_id); hdr->hw_rev = HOST_TO_BE32(board->hw_rev); if (boot_info.file_size == 0) memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1)); else memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1)); hdr->kernel_la = HOST_TO_BE32(kernel_la); hdr->kernel_ep = HOST_TO_BE32(kernel_ep); hdr->fw_length = HOST_TO_BE32(board->fw_max_len); hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header)); hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size); if (!combined) { hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs); hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size); } get_md5(buf, len, hdr->md5sum1); } static int write_fw(char *data, int len) { FILE *f; int ret = EXIT_FAILURE; f = fopen(ofname, "w"); if (f == NULL) { ERRS("could not open \"%s\" for writing", ofname); goto out; } errno = 0; fwrite(data, len, 1, f); if (errno) { ERRS("unable to write output file"); goto out_flush; } DBG("firmware file \"%s\" completed", ofname); ret = EXIT_SUCCESS; out_flush: fflush(f); fclose(f); if (ret != EXIT_SUCCESS) { unlink(ofname); } out: return ret; } static int build_fw(void) { int buflen; char *buf; char *p; int ret = EXIT_FAILURE; int writelen = 0; buflen = board->fw_max_len; buf = malloc(buflen); if (!buf) { ERR("no memory for buffer\n"); goto out; } memset(buf, 0xff, buflen); p = buf + sizeof(struct fw_header); ret = read_to_buf(&kernel_info, p); if (ret) goto out_free_buf; writelen = kernel_info.file_size; if (!combined) { p = buf + rootfs_ofs; ret = read_to_buf(&rootfs_info, p); if (ret) goto out_free_buf; writelen = rootfs_ofs + rootfs_info.file_size; } if (!strip_padding) writelen = buflen; fill_header(buf, writelen); ret = write_fw(buf, writelen); if (ret) goto out_free_buf; ret = EXIT_SUCCESS; out_free_buf: free(buf); out: return ret; } /* Helper functions to inspect_fw() representing different output formats */ static inline void inspect_fw_pstr(char *label, char *str) { printf("%-23s: %s\n", label, str); } static inline void inspect_fw_phex(char *label, uint32_t val) { printf("%-23s: 0x%08x\n", label, val); } static inline void inspect_fw_phexpost(char *label, uint32_t val, char *post) { printf("%-23s: 0x%08x (%s)\n", label, val, post); } static inline void inspect_fw_phexdef(char *label, uint32_t val, uint32_t defval) { printf("%-23s: 0x%08x ", label, val); if (val == defval) printf("(== OpenWrt default)\n"); else printf("(OpenWrt default: 0x%08x)\n", defval); } static inline void inspect_fw_phexexp(char *label, uint32_t val, uint32_t expval) { printf("%-23s: 0x%08x ", label, val); if (val == expval) printf("(ok)\n"); else printf("(expected: 0x%08x)\n", expval); } static inline void inspect_fw_phexdec(char *label, uint32_t val) { printf("%-23s: 0x%08x / %8u bytes\n", label, val, val); } static inline void inspect_fw_phexdecdef(char *label, uint32_t val, uint32_t defval) { printf("%-23s: 0x%08x / %8u bytes ", label, val, val); if (val == defval) printf("(== OpenWrt default)\n"); else printf("(OpenWrt default: 0x%08x)\n", defval); } static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text) { int i; printf("%-23s:", label); for (i=0; i<MD5SUM_LEN; i++) printf(" %02x", val[i]); printf(" %s\n", text); } static int inspect_fw(void) { char *buf; struct fw_header *hdr; uint8_t md5sum[MD5SUM_LEN]; struct board_info *board; int ret = EXIT_FAILURE; buf = malloc(inspect_info.file_size); if (!buf) { ERR("no memory for buffer!\n"); goto out; } ret = read_to_buf(&inspect_info, buf); if (ret) goto out_free_buf; hdr = (struct fw_header *)buf; inspect_fw_pstr("File name", inspect_info.file_name); inspect_fw_phexdec("File size", inspect_info.file_size); if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) { ERR("file does not seem to have V1 header!\n"); goto out_free_buf; } inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header)); if (BE32_TO_HOST(hdr->unk1) != 0) inspect_fw_phexdec("Unknown value 1", hdr->unk1); memcpy(md5sum, hdr->md5sum1, sizeof(md5sum)); if (BE32_TO_HOST(hdr->boot_len) == 0) memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum)); else memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum)); get_md5(buf, inspect_info.file_size, hdr->md5sum1); if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) { inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)"); inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, ""); } else { inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)"); } if (BE32_TO_HOST(hdr->unk2) != 0) inspect_fw_phexdec("Unknown value 2", hdr->unk2); inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2, "(purpose yet unknown, unchecked here)"); if (BE32_TO_HOST(hdr->unk3) != 0) inspect_fw_phexdec("Unknown value 3", hdr->unk3); printf("\n"); inspect_fw_pstr("Vendor name", hdr->vendor_name); inspect_fw_pstr("Firmware version", hdr->fw_version); board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id)); if (board) { inspect_fw_phexpost("Hardware ID", BE32_TO_HOST(hdr->hw_id), board->id); inspect_fw_phexexp("Hardware Revision", BE32_TO_HOST(hdr->hw_rev), board->hw_rev); } else { inspect_fw_phexpost("Hardware ID", BE32_TO_HOST(hdr->hw_id), "unknown"); inspect_fw_phex("Hardware Revision", BE32_TO_HOST(hdr->hw_rev)); } printf("\n"); inspect_fw_phexdec("Kernel data offset", BE32_TO_HOST(hdr->kernel_ofs)); inspect_fw_phexdec("Kernel data length", BE32_TO_HOST(hdr->kernel_len)); if (board) { inspect_fw_phexdef("Kernel load address", BE32_TO_HOST(hdr->kernel_la), board->kernel_la); inspect_fw_phexdef("Kernel entry point", BE32_TO_HOST(hdr->kernel_ep), board->kernel_ep); inspect_fw_phexdecdef("Rootfs data offset", BE32_TO_HOST(hdr->rootfs_ofs), board->rootfs_ofs); } else { inspect_fw_phex("Kernel load address", BE32_TO_HOST(hdr->kernel_la)); inspect_fw_phex("Kernel entry point", BE32_TO_HOST(hdr->kernel_ep)); inspect_fw_phexdec("Rootfs data offset", BE32_TO_HOST(hdr->rootfs_ofs)); } inspect_fw_phexdec("Rootfs data length", BE32_TO_HOST(hdr->rootfs_len)); inspect_fw_phexdec("Boot loader data offset", BE32_TO_HOST(hdr->boot_ofs)); inspect_fw_phexdec("Boot loader data length", BE32_TO_HOST(hdr->boot_len)); inspect_fw_phexdec("Total firmware length", BE32_TO_HOST(hdr->fw_length)); if (extract) { FILE *fp; char *filename; printf("\n"); filename = malloc(strlen(inspect_info.file_name) + 8); sprintf(filename, "%s-kernel", inspect_info.file_name); printf("Extracting kernel to \"%s\"...\n", filename); fp = fopen(filename, "w"); if (fp) { if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs), BE32_TO_HOST(hdr->kernel_len), 1, fp)) { ERR("error in fwrite(): %s", strerror(errno)); } fclose(fp); } else { ERR("error in fopen(): %s", strerror(errno)); } free(filename); filename = malloc(strlen(inspect_info.file_name) + 8); sprintf(filename, "%s-rootfs", inspect_info.file_name); printf("Extracting rootfs to \"%s\"...\n", filename); fp = fopen(filename, "w"); if (fp) { if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs), BE32_TO_HOST(hdr->rootfs_len), 1, fp)) { ERR("error in fwrite(): %s", strerror(errno)); } fclose(fp); } else { ERR("error in fopen(): %s", strerror(errno)); } free(filename); } out_free_buf: free(buf); out: return ret; } int main(int argc, char *argv[]) { int ret = EXIT_FAILURE; int err; FILE *outfile; progname = basename(argv[0]); while ( 1 ) { int c; c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs"); if (c == -1) break; switch (c) { case 'B': board_id = optarg; break; case 'E': sscanf(optarg, "0x%x", &kernel_ep); break; case 'L': sscanf(optarg, "0x%x", &kernel_la); break; case 'V': version = optarg; break; case 'N': vendor = optarg; break; case 'c': combined++; break; case 'k': kernel_info.file_name = optarg; break; case 'r': rootfs_info.file_name = optarg; break; case 'R': sscanf(optarg, "0x%x", &rootfs_ofs); break; case 'o': ofname = optarg; break; case 's': strip_padding = 1; break; case 'i': inspect_info.file_name = optarg; break; case 'x': extract = 1; break; case 'h': usage(EXIT_SUCCESS); break; default: usage(EXIT_FAILURE); break; } } ret = check_options(); if (ret) goto out; if (!inspect_info.file_name) ret = build_fw(); else ret = inspect_fw(); out: return ret; }


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