+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2020 Vincent Wiemann <vw@derowe.com>
- *
- * This program is derived from ZyXEL's GPL U-Boot code.
- * Copyright (C) 2011-2011 ZyXEL Communications, Corp.
- */
-
-#define _POSIX_SOURCE
-#define _POSIX_C_SOURCE 199309L /* getopt */
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <time.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <string.h>
-#include <unistd.h>
-#include <netinet/in.h>
-#include <limits.h>
-#include "md5.h"
-
-#define ZYXEL_MAGIC 0xdeadbeaf
-#define MAX_MODELS 5
-#define CHECKSUM_SIZE sizeof(uint32_t)
-#define MAX_FILES 32
-#define MAX_FILENAME 64
-
-#define DATE_SIZE 32
-#define REV_SIZE 32
-
-#define error(fmt, ...) \
- do { \
- printf("Error: " fmt, ##__VA_ARGS__); \
- exit(1); \
- } while (0)
-
-enum {
- FILE_TYPE_BM = 1,
- FILE_TYPE_KERNEL,
- FILE_TYPE_CORE,
- FILE_TYPE_DB,
- FILE_TYPE_CONF,
- FILE_TYPE_WTP
-};
-
-struct file_type_tbl {
- int type;
- char *str;
-};
-
-struct file_type_tbl file_types[] = {
- { FILE_TYPE_BM, "bm" }, { FILE_TYPE_KERNEL, "kernel" },
- { FILE_TYPE_CORE, "core" }, { FILE_TYPE_DB, "db" },
- { FILE_TYPE_CONF, "conf", }, { FILE_TYPE_WTP, "wtp" }
-};
-static int FILE_TYPE_COUNT = sizeof(file_types) / sizeof(struct file_type_tbl);
-
-struct fw_header {
- uint32_t checksum; /* MD5-based checksum */
- uint32_t magic; /* 0xdeadbeaf */
- uint16_t version; /* version of the firmware archive */
- uint16_t files_count; /* number of files contained */
- uint16_t models_count; /* number of supported models */
- uint16_t models[MAX_MODELS]; /* supported models' IDs */
- uint32_t total_length; /* total length of the firmware archive */
- uint16_t files_offset; /* offset of the first file */
- uint16_t header_length; /* length of this header */
- uint16_t info_length; /* length of the file information header */
- uint16_t __padding1[3]; /* reserved for future use */
- char capwap_version[32]; /* e.g. "undefined" */
- char model_name[32]; /* e.g. "NWA512X-FAT" */
-} __attribute__((packed));
-
-struct fw_header_file {
- uint16_t type; /* file type (e.g. FILE_TYPE_KERNEL) */
- uint16_t flags; /* unknown */
- uint32_t length; /* length of the file */
- uint32_t checksum; /* checksum of the file */
- uint32_t flash_offset; /* write offset from beginning of flash */
- char filename[MAX_FILENAME]; /* original file name */
- char target[128]; /* target "file" name (e.g. "kernel", "zldfs") */
- char revision[REV_SIZE]; /* revision string */
- char date[32]; /* creation date string */
-} __attribute__((packed));
-
-struct fw_header_kernel {
- char bm_version[64];
- char kernel_version[64];
- char core_version[64];
- char capwap_version[32];
- char model_name[32];
- uint32_t bm_checksum;
- uint32_t kernel_checksum;
- uint32_t zld_checksum;
- uint32_t core_checksum;
- uint16_t max_models;
- uint16_t models[MAX_MODELS];
- char padding[512 - 64 * 4 - 4 * 4 - 2 - MAX_MODELS * 2 - 4];
- uint32_t baudrate;
-} __attribute__((packed));
-
-struct firmware_file {
- struct fw_header_file header;
- size_t offset;
- char filepath[PATH_MAX];
-};
-
-struct firmware {
- struct fw_header header;
- struct firmware_file *files;
- size_t files_count;
- struct fw_header_kernel kernel_header;
- char lower_endian;
-};
-
-static size_t get_file_size(FILE *fp)
-{
- size_t pos = (size_t)ftell(fp);
- size_t file_size;
-
- fseek(fp, 0, SEEK_END);
- file_size = (size_t)ftell(fp);
- fseek(fp, (long int)pos, SEEK_SET);
-
- return file_size;
-}
-
-static void copy_from_to_file(FILE *fp_src, size_t src_offset, FILE *fp_dst,
- size_t dst_offset, size_t length)
-{
- int buf[512];
- size_t len;
-
- if (src_offset)
- fseek(fp_src, (long int)src_offset, SEEK_SET);
-
- if (dst_offset)
- fseek(fp_src, (long int)dst_offset, SEEK_SET);
-
- while (length) {
- if (length >= sizeof(buf)) {
- len = sizeof(buf);
- } else {
- len = length;
- }
-
- length -= len;
-
- if (fread(buf, len, 1, fp_src) != 1)
- error("Failed to read");
-
- if (fwrite(buf, len, 1, fp_dst) != 1)
- error("Failed to write");
- }
-}
-
-static void extract_to_file(FILE *fp_src, char *dst, size_t length,
- size_t offset)
-{
- FILE *fp_dst;
-
- if (!(fp_dst = fopen(dst, "wb")))
- error("Failed to open %s for writing", dst);
-
- copy_from_to_file(fp_src, offset, fp_dst, 0, length);
-
- fclose(fp_dst);
-}
-
-static void dump_firmware_header(struct fw_header *header_p)
-{
- int i;
-
- printf("FIRMWARE HEADER\n");
- printf("checksum = 0x%08x, magic = 0x%08x\n",
- header_p->checksum, header_p->magic);
- printf("version = 0x%04x, files_count = %12d\n",
- header_p->version, header_p->files_count);
- printf("models_count = %12d, total_length = %12d\n",
- header_p->models_count, header_p->total_length);
- printf("files_offset = 0x%04x, header_length = %12d\n",
- header_p->files_offset, header_p->header_length);
- printf("info_length = %12d, capwap_version = %12s\n",
- header_p->info_length, header_p->capwap_version);
- printf("model_name = %s\n", header_p->model_name);
- printf("models =");
- for (i = 0; i < header_p->models_count && i < MAX_MODELS; i++)
- printf(" 0x%04x", header_p->models[i]);
- printf("\n\n");
-}
-
-static int get_file_type_id(char *type)
-{
- struct file_type_tbl *ft = file_types;
- int i;
-
- for (i = 0; i < FILE_TYPE_COUNT; i++, ft++)
- if (!strcmp(type, ft->str))
- return ft->type;
-
- printf("Supported file types:\n");
- for (i = 0, ft = file_types; i < FILE_TYPE_COUNT; i++, ft++)
- printf("%8s (ID 0x%x)\n", ft->str, ft->type);
-
- error("Unknown file type \"%s\"\n", type);
-
- return 0;
-}
-
-static char *get_file_type_string(int type)
-{
- struct file_type_tbl *ft = file_types;
- int i;
-
- for (i = 0; i < FILE_TYPE_COUNT; i++, ft++)
- if (ft->type == type)
- return ft->str;
-
- return NULL;
-}
-
-static void dump_file_header(struct fw_header_file *file_header)
-{
- printf("\nfilename=%s, type=%s, flags=0x%x target=%s, revision=%s\n",
- file_header->filename, get_file_type_string(file_header->type),
- file_header->flags, file_header->target, file_header->revision);
- printf("date=%s, length=%u, checksum=0x%08x, flash_offset=0x%08x\n",
- file_header->date, file_header->length, file_header->checksum,
- file_header->flash_offset);
-}
-
-static void dump_kernel_header(struct fw_header_kernel *kernel_header)
-{
- int i;
-
- printf("KERNEL HEADER (%lu bytes)\n", sizeof(struct fw_header_kernel));
- printf("bm_version = %s\n", kernel_header->bm_version);
- printf("kernel_version = %s\n", kernel_header->kernel_version);
- printf("core_version = %s\n", kernel_header->core_version);
- printf("capwap_version = %s\n", kernel_header->capwap_version);
- printf("model_name = %s\n", kernel_header->model_name);
- printf("bm_checksum = 0x%08x\n", kernel_header->bm_checksum);
- printf("kernel_checksum = 0x%08x\n", kernel_header->kernel_checksum);
- printf("zld_checksum = 0x%08x\n", kernel_header->zld_checksum);
- printf("core_checksum = 0x%08x\n", kernel_header->core_checksum);
- printf("max_models = %u\n", kernel_header->max_models);
- printf("models =");
- for (i = 0; i < 5; i++)
- printf(" 0x%04x", kernel_header->models[i]);
- printf("\n");
- printf("baudrate = %u\n", kernel_header->baudrate);
- printf("\n");
-}
-
-static void translate_fw_header(struct fw_header *header_p)
-{
- int i;
-
- header_p->magic = ntohl(header_p->magic);
- header_p->version = ntohs(header_p->version);
- header_p->files_count = ntohs(header_p->files_count);
- header_p->models_count = ntohs(header_p->models_count);
- for (i = 0; i < MAX_MODELS; i++)
- header_p->models[i] = ntohs(header_p->models[i]);
- header_p->total_length = ntohl(header_p->total_length);
- header_p->files_offset = ntohs(header_p->files_offset);
- header_p->header_length = ntohs(header_p->header_length);
- header_p->info_length = ntohs(header_p->info_length);
-}
-
-static void translate_file_header(struct fw_header_file *file_header)
-{
- file_header->type = ntohs(file_header->type);
- file_header->flags = ntohs(file_header->flags);
- file_header->length = ntohl(file_header->length);
- file_header->checksum = ntohl(file_header->checksum);
- file_header->flash_offset = ntohl(file_header->flash_offset);
-}
-
-static void translate_kernel_header(struct fw_header_kernel *kernel_header)
-{
- int i;
-
- kernel_header->bm_checksum = ntohl(kernel_header->bm_checksum);
- kernel_header->kernel_checksum = ntohl(kernel_header->kernel_checksum);
- /*kernel_header->zld_checksum = ntohl(kernel_header->zld_checksum);*/
- kernel_header->core_checksum = ntohl(kernel_header->core_checksum);
-
- kernel_header->max_models = ntohs(kernel_header->max_models);
- for (i = 0; i < MAX_MODELS; i++)
- kernel_header->models[i] = ntohs(kernel_header->models[i]);
- kernel_header->baudrate = ntohl(kernel_header->baudrate);
-}
-
-static void checksum_add_from_buf(MD5_CTX *ctx, void *buf,
- size_t length, size_t offset)
-{
- char *begin = &((char *)buf)[offset];
-
- MD5_Update(ctx, begin, length);
-}
-
-static void checksum_add_from_file(MD5_CTX *ctx, FILE *fp_src,
- size_t length, size_t offset)
-{
- int buf[512];
- size_t len;
-
- fseek(fp_src, (long int)offset, SEEK_SET);
- while (length) {
- if (length >= sizeof(buf)) {
- len = sizeof(buf);
- } else {
- len = length;
- }
-
- length -= len;
-
- if (fread(buf, len, 1, fp_src) != 1)
- error("Failed to read for checksum calculation");
-
- checksum_add_from_buf(ctx, buf, len, 0);
- }
-}
-
-static uint32_t checksum_finish(MD5_CTX *ctx)
-{
- unsigned char md5sum[16];
- uint32_t checksum = 0;
- int i;
-
- MD5_Final(md5sum, ctx);
-
- for (i = 0; i < 16; i += 4)
- checksum += ((uint32_t)md5sum[i] << 24 |
- (uint32_t)md5sum[i + 1] << 16 |
- (uint32_t)md5sum[i + 2] << 8 |
- (uint32_t)md5sum[i + 3]);
-
- if (checksum == 0)
- checksum = 1;
-
- return checksum;
-}
-
-static uint32_t checksum_calculate(FILE *fp, size_t kernel_offset)
-{
- struct fw_header_kernel dummy;
- MD5_CTX ctx;
- size_t file_size;
-
- fseek(fp, 0, SEEK_SET);
- file_size = get_file_size(fp);
-
- MD5_Init(&ctx);
-
- checksum_add_from_file(&ctx, fp, kernel_offset - CHECKSUM_SIZE,
- CHECKSUM_SIZE);
-
- /* use a zeroed out kernel version header */
- memset(&dummy, 0, sizeof(dummy));
- checksum_add_from_buf(&ctx, &dummy, sizeof(dummy), 0);
-
- checksum_add_from_file(&ctx, fp,
- file_size - kernel_offset - sizeof(dummy),
- kernel_offset + sizeof(dummy));
-
- return checksum_finish(&ctx);
-}
-
-static uint32_t checksum_calculate_file(char *filename)
-{
- MD5_CTX ctx;
- FILE *fp;
- size_t file_size;
-
- if (!(fp = fopen(filename, "rb")))
- error("Failed to open %s for writing\n", filename);
-
- file_size = get_file_size(fp);
-
- MD5_Init(&ctx);
-
- checksum_add_from_file(&ctx, fp, file_size, 0);
-
- fclose(fp);
-
- return checksum_finish(&ctx);
-}
-
-static void parse_firmware(struct firmware *fw, FILE *fp)
-{
- struct firmware_file *file;
- size_t file_size, file_offset, kernel_offset;
- uint32_t checksum = 0;
- int i;
-
- if (!fw)
- error("Failed to allocate firmware struct\n");
-
- file_size = get_file_size(fp);
-
- if (file_size < sizeof(fw->header))
- error("File too small\n");
-
- if (1 != fread(&fw->header, sizeof(fw->header), 1, fp))
- error("Failed to read firmware header\n");
-
- if (ntohl(fw->header.magic) == ZYXEL_MAGIC) {
- fw->lower_endian = 1;
- translate_fw_header(&fw->header);
- } else if (fw->header.magic != ZYXEL_MAGIC) {
- error("Unsupported magic. Expected 0x%x, but found 0x%x\n",
- ZYXEL_MAGIC, fw->header.magic);
- }
-
- if (fw->header.models_count != MAX_MODELS)
- error("Wrong number of models. Expected %u, but found %u\n",
- MAX_MODELS, fw->header.models_count);
-
- dump_firmware_header(&fw->header);
-
- if (fw->header.total_length != file_size)
- error("File size does not match. Expected %lu, but found %u\n",
- file_size, fw->header.total_length);
-
- file_offset = sizeof(fw->header) +
- fw->header.files_count * sizeof(struct fw_header_file);
-
- if (file_offset != fw->header.files_offset)
- error("File offset does not match definition in header\n");
-
- if (file_size < file_offset)
- error("File too small for %u file headers\n",
- fw->header.files_count);
-
- if (NULL == (fw->files = malloc(fw->header.files_count *
- sizeof(struct firmware_file))))
- error("Failed to allocate memory for %u file structs\n",
- fw->header.files_count);
-
- for (i = 0, file = fw->files; i < fw->header.files_count; i++, file++) {
- if (1 != fread(file, sizeof(struct fw_header_file), 1, fp))
- error("Failed to read file header #%u\n", i + 1);
-
- if (fw->lower_endian)
- translate_file_header(&file->header);
-
- if (file_offset + file->header.length > fw->header.total_length)
- error("File offset exceeds size of firmware archive\n");
-
- if (file->header.type == FILE_TYPE_KERNEL)
- kernel_offset = file_offset;
-
- file->offset = file_offset;
-
- file_offset += file->header.length;
- }
-
- if (!kernel_offset)
- error("Kernel image missing for checksum calculation\n");
-
- /* as we know the kernel offset, we can calculate the checksum
- * as it must be excluded from checksum calculation */
- checksum = checksum_calculate(fp, kernel_offset);
-
- if (fw->lower_endian)
- checksum = ntohl(checksum);
-
- if (checksum != fw->header.checksum)
- printf("WARN: Checksum mismatch. Calculated 0x%x\n", checksum);
-
- fseek(fp, (long int)kernel_offset, SEEK_SET);
- if (1 != fread(&fw->kernel_header, sizeof(fw->kernel_header), 1, fp))
- error("Failed to read kernel header\n");
-
- if (fw->lower_endian)
- translate_kernel_header(&fw->kernel_header);
-
- dump_kernel_header(&fw->kernel_header);
-}
-
-static void extract_firmware(struct firmware *fw, char *filename)
-{
- struct firmware_file *file;
- FILE *fp;
- int i;
-
- if (!(fp = fopen(filename, "rb")))
- error("Failed to open firmware archive for extraction %s\n",
- filename);
-
- parse_firmware(fw, fp);
-
- printf("Extracting files...");
-
- for (i = 0, file = fw->files; i < fw->header.files_count; i++, file++) {
- dump_file_header(&file->header);
- if (file->header.type == FILE_TYPE_KERNEL) {
- /* strip kernel header */
- extract_to_file(
- fp, file->header.filename,
- file->header.length -
- sizeof(struct fw_header_kernel),
- file->offset + sizeof(struct fw_header_kernel));
- } else {
- extract_to_file(fp, file->header.filename,
- file->header.length, file->offset);
- }
-
- printf("Calculated file checksum is 0x%08x\n",
- checksum_calculate_file(file->header.filename));
- }
-
- free(fw->files);
- fclose(fp);
-}
-
-static void init_fw_header(struct firmware *fw)
-{
- int i;
-
- for (i = 0; i < MAX_MODELS; i++)
- fw->header.models[i] = 0xffff;
-
- fw->kernel_header.baudrate = 115200;
- fw->kernel_header.max_models = MAX_MODELS;
- /* ZyXEL messed up their code and included a 32 bit pointer */
- fw->header.header_length = sizeof(fw->header) + 4;
- fw->header.magic = ZYXEL_MAGIC;
-}
-
-static void write_headers(FILE *fp, struct firmware *fw)
-{
- struct firmware_file *file;
- unsigned int i;
-
- fseek(fp, 0, SEEK_SET);
-
- if (1 != fwrite(&fw->header, sizeof(fw->header), 1, fp))
- error("Failed to write firmware header\n");
-
- for (i = 0, file = fw->files; i < fw->files_count; i++, file++)
- if (1 !=
- fwrite(&file->header, sizeof(struct fw_header_file), 1, fp))
- error("Failed to write file header #%u\n", i + 1);
-}
-
-static void usage(char *progname)
-{
- printf("Usage: %s\n"
- " For extraction:\n"
- " -e <file> extract firmware <file>\n\n"
- " For creation:\n"
- " -v <version> set hexadecimal firmware <version>\n"
- " -b <checksum> set hexadecimal bootmanager <checksum>\n"
- " -c <version> set capwap <version> string\n"
- " -m <model> set <model> string\n"
- " -d <model_id> set (up to %u) hexadecimal <model_id>\n"
- " (multiple input files)\n"
- " -i <file> add input <file>\n"
- " -o <offset> set hexadecimal flash offset for file\n"
- " -r <revision> set revision string for file\n"
- " -t <type> choose file <type>\n"
- " -x <target> set (partition) <target> of file\n"
- " <output_filename>\n",
- progname, MAX_MODELS);
- exit(1);
-}
-
-int main(int argc, char *argv[])
-{
- struct firmware fw;
- struct firmware_file *file;
- struct firmware_file *core_file = NULL;
- struct stat attr;
- static const char *optstr = "e:v:b:c:m:d:i:o:r:t:x:h";
- const char *capwap_version = "undefined";
- const char *separator = " | ";
- char *filename;
- FILE *fp_src, *fp_dst;
- size_t kernel_offset = 0;
- unsigned int i;
- int opt;
-
- memset(&fw, 0, sizeof(fw));
- init_fw_header(&fw);
-
- if (argc < 1)
- usage(argv[0]);
-
- opt = getopt(argc, argv, optstr);
- if (opt == -1)
- usage(argv[0]);
- while (opt != -1) {
- if (optarg == NULL)
- usage(argv[0]);
-
- switch (opt) {
- case 'e':
- extract_firmware(&fw, optarg);
- exit(0);
- case 'v':
- fw.header.version = (uint16_t)strtol(optarg, NULL, 16);
- if (!fw.header.version)
- error("Invalid version number\n");
- break;
- case 'b':
- fw.kernel_header.bm_checksum =
- (uint32_t)strtol(optarg, NULL, 16);
- break;
- case 'c':
- strncpy(fw.header.capwap_version, optarg,
- sizeof(fw.header.capwap_version) - 1);
- break;
- case 'm':
- strncpy(fw.header.model_name, optarg,
- sizeof(fw.header.model_name) - 1);
- break;
- case 'd':
- if (fw.header.models_count == MAX_MODELS)
- error("Max. number of supported models is %u\n",
- MAX_MODELS);
-
- fw.header.models[fw.header.models_count] =
- (uint16_t)strtol(optarg, NULL, 16);
- fw.header.models_count++;
- break;
- case 'i':
- filename = optarg;
-
- if (!fw.files &&
- NULL == (fw.files = malloc(
- MAX_FILES *
- sizeof(struct firmware_file))))
- error("Failed to allocate %u file structs\n",
- MAX_FILES);
-
- if (fw.files_count == MAX_FILES)
- error("Maximum number of files reached (%u)\n",
- MAX_FILES);
-
- if (stat(optarg, &attr))
- error("Stat failed on %s\n", optarg);
-
- strftime(fw.files[fw.files_count].header.date,
- DATE_SIZE - 1, "%Y-%m-%d %H:%M:%S",
- localtime(&attr.st_mtime));
-
- strncpy(fw.files[fw.files_count].filepath, optarg,
- PATH_MAX - 1);
-
- filename = strrchr(optarg, '/');
- if (!filename)
- filename = optarg;
-
- strncpy(fw.files[fw.files_count].header.filename,
- filename, MAX_FILENAME - 1);
-
- fw.files_count++;
- break;
- case 'o':
- if (!fw.files_count)
- error("Specify offset after filename\n");
-
- fw.files[fw.files_count - 1].header.flash_offset =
- (uint32_t)strtol(optarg, NULL, 16);
- break;
- case 'r':
- if (!fw.files_count)
- error("Specify file revision after filename\n");
-
- strncpy(fw.files[fw.files_count - 1].header.revision,
- optarg, REV_SIZE - 1);
- break;
- case 't':
- if (!fw.files_count)
- error("Specify file type after filename!\n");
-
- fw.files[fw.files_count - 1].header.type =
- get_file_type_id(optarg);
- break;
- case 'x':
- if (!fw.files_count)
- error("Specify file target after filename!\n");
- strncpy(fw.files[fw.files_count - 1].header.target,
- optarg, sizeof(fw.files[0].header.target) - 1);
- break;
- case 'h':
- default:
- usage(argv[0]);
- }
-
- opt = getopt(argc, argv, optstr);
- }
-
- if (!fw.header.models_count)
- error("Supported model IDs missing (option -d)\n");
-
- if (!fw.header.version)
- error("Version number missing (e.g. -v 0x100)\n");
-
- if (!fw.kernel_header.bm_checksum)
- error("Bootmanager checksum is missing (option -b)\n");
-
- if (!strlen(fw.header.model_name))
- error("Model name missing (option -m)\n");
-
- if (!strlen(fw.header.capwap_version))
- strncpy(fw.header.capwap_version, capwap_version,
- sizeof(fw.header.capwap_version) - 1);
-
- fw.header.models_count = MAX_MODELS;
- fw.header.files_count = fw.files_count;
- memcpy(fw.kernel_header.models, fw.header.models,
- sizeof(fw.header.models));
-
- for (i = 0; i < fw.files_count; i++) {
- if (!fw.files[i].header.type)
- error("No file or type specified for file %s\n",
- fw.files[i].filepath);
-
- if (!strlen(fw.files[i].header.target))
- error("Target missing for %s (e.g. -x zldfs)\n",
- fw.files[i].filepath);
-
- if (!strlen(fw.files[i].header.revision))
- error("Revision missing for %s\n",
- fw.files[i].filepath);
- }
-
- filename = argv[optind];
- if (!(fp_dst = fopen(filename, "w+b")))
- error("Failed to open %s for writing\n", filename);
-
- write_headers(fp_dst, &fw);
-
- fw.header.info_length = sizeof(struct fw_header_file);
- fw.header.files_offset =
- sizeof(fw.header) + fw.files_count * fw.header.info_length;
- if ((size_t)ftell(fp_dst) != fw.header.files_offset)
- error("Oops. Something went wrong writing the file headers");
-
- fw.header.total_length = fw.header.files_offset;
- for (i = 0, file = fw.files; i < fw.files_count; i++, file++) {
- file->header.checksum = checksum_calculate_file(file->filepath);
-
- if (!(fp_src = fopen(file->filepath, "rb")))
- error("Failed to open %s for writing\n", filename);
-
- file->offset = fw.header.total_length;
-
- file->header.length = get_file_size(fp_src);
-
- if (file->header.type == FILE_TYPE_KERNEL)
- if (1 != fwrite(&fw.kernel_header,
- sizeof(fw.kernel_header), 1, fp_dst))
- error("Failed to write kernel header\n");
-
- copy_from_to_file(fp_src, 0, fp_dst, 0, file->header.length);
-
- if (file->header.type == FILE_TYPE_KERNEL) {
- file->header.length += sizeof(fw.kernel_header);
- kernel_offset = file->offset;
- fw.kernel_header.kernel_checksum =
- file->header.checksum;
- if (strlen(file->header.revision) + strlen(separator) +
- strlen(file->header.date) >=
- sizeof(fw.kernel_header.kernel_version))
- error("Kernel file revision too long\n");
-
- strcat(fw.kernel_header.kernel_version,
- file->header.revision);
- strcat(fw.kernel_header.kernel_version, separator);
- strcat(fw.kernel_header.kernel_version,
- file->header.date);
- } else if (file->header.type == FILE_TYPE_CORE) {
- core_file = file;
- }
-
- fw.header.total_length += file->header.length;
-
- translate_file_header(&file->header);
-
- fclose(fp_src);
- }
-
- /* update headers with correct lengths and endianness */
- translate_fw_header(&fw.header);
-
- write_headers(fp_dst, &fw);
-
- if (!kernel_offset)
- error("Kernel image needed for checksum calculation\n");
-
- /* update headers with correct checksum */
- fw.header.checksum = htonl(checksum_calculate(fp_dst, kernel_offset));
- fseek(fp_dst, 0, SEEK_SET);
- fwrite(&fw.header.checksum, sizeof(fw.header.checksum), 1, fp_dst);
-
- fw.kernel_header.zld_checksum = fw.header.checksum;
- strncpy(fw.kernel_header.model_name, fw.header.model_name,
- sizeof(fw.kernel_header.model_name) - 1);
- strncpy(fw.kernel_header.capwap_version, fw.header.capwap_version,
- sizeof(fw.kernel_header.capwap_version) - 1);
-
- translate_kernel_header(&fw.kernel_header);
-
- if (core_file) {
- fw.kernel_header.core_checksum = core_file->header.checksum;
-
- if (strlen(core_file->header.revision) + strlen(separator) +
- strlen(core_file->header.date) >=
- sizeof(fw.kernel_header.core_version))
- error("Core file revision string too long\n");
-
- strcat(fw.kernel_header.core_version,
- core_file->header.revision);
- strcat(fw.kernel_header.core_version, separator);
- strcat(fw.kernel_header.core_version, core_file->header.date);
- }
-
- fseek(fp_dst, (long int)kernel_offset, SEEK_SET);
- fwrite(&fw.kernel_header, sizeof(fw.kernel_header), 1, fp_dst);
-
- fclose(fp_dst);
-
- exit(0);
-}
projects / openwrt / openwrt.git / blobdiff