--- /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 <linux/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 / commitdiff