firmware-utils: mkwrggimg: new tool for D-Link DAP-2695
authorStijn Tintel <stijn@linux-ipv6.be>
Sat, 6 Aug 2016 17:36:24 +0000 (19:36 +0200)
committerStijn Tintel <stijn@linux-ipv6.be>
Wed, 26 Oct 2016 22:50:42 +0000 (01:50 +0300)
Based on mkwrgimg.c.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: John Crispin <john@phrozen.org>
tools/firmware-utils/Makefile
tools/firmware-utils/src/mkwrggimg.c [new file with mode: 0644]

index 803ada4..320d1db 100644 (file)
@@ -57,6 +57,7 @@ define Host/Compile
        $(call cc,buffalo-tag buffalo-lib, -Wall)
        $(call cc,buffalo-tftp buffalo-lib, -Wall)
        $(call cc,mkwrgimg md5, -Wall)
+       $(call cc,mkwrggimg md5, -Wall)
        $(call cc,mkedimaximg)
        $(call cc,mkbrncmdline)
        $(call cc,mkbrnimg)
diff --git a/tools/firmware-utils/src/mkwrggimg.c b/tools/firmware-utils/src/mkwrggimg.c
new file mode 100644 (file)
index 0000000..a224b25
--- /dev/null
@@ -0,0 +1,282 @@
+/*
+ *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2016 Stijn Tintel <stijn@linux-ipv6.be>
+ *
+ *  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>
+#include <libgen.h>
+#include <getopt.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+#include "md5.h"
+
+#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 ", %s\n", \
+                       progname, ## __VA_ARGS__, strerror(save)); \
+} while (0)
+
+#define WRGG03_MAGIC   0x20080321
+
+struct wrgg03_header {
+       char            signature[32];
+       uint32_t        magic1;
+       uint32_t        magic2;
+       char            version[16];
+       char            model[16];
+       uint32_t        flag[2];
+       uint32_t        reserve[2];
+       char            buildno[16];
+       uint32_t        size;
+       uint32_t        offset;
+       char            devname[32];
+       char            digest[16];
+} __attribute__ ((packed));
+
+static char *progname;
+static char *ifname;
+static char *ofname;
+static char *signature;
+static char *version;
+static char *model;
+static uint32_t flag = 0;
+static uint32_t reserve = 0;
+static char *buildno;
+static uint32_t offset;
+static char *devname;
+static int big_endian;
+
+void usage(int status)
+{
+       FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
+
+       fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
+       fprintf(stream,
+"\n"
+"Options:\n"
+"  -b              create image in big endian format\n"
+"  -B <buildno>    build number\n"
+"  -i <file>       read input from the file <file>\n"
+"  -d <name>       set device name to <name>\n"
+"  -m <model>      model name\n"
+"  -o <file>       write output to the file <file>\n"
+"  -O <offset>     set offset to <offset>\n"
+"  -s <sig>        set image signature to <sig>\n"
+"  -h              show this screen\n"
+       );
+
+       exit(status);
+}
+
+static void put_u32(void *data, uint32_t val, int swap)
+{
+       unsigned char *p = data;
+
+       if (swap) {
+               p[0] = (val >> 24) & 0xff;
+               p[1] = (val >> 16) & 0xff;
+               p[2] = (val >> 8) & 0xff;
+               p[3] = val & 0xff;
+       } else {
+               p[3] = (val >> 24) & 0xff;
+               p[2] = (val >> 16) & 0xff;
+               p[1] = (val >> 8) & 0xff;
+               p[0] = val & 0xff;
+       }
+}
+
+static void get_digest(struct wrgg03_header *header, char *data, int size)
+{
+       MD5_CTX ctx;
+
+       MD5_Init(&ctx);
+
+       MD5_Update(&ctx, (char *)&header->offset, sizeof(header->offset));
+       MD5_Update(&ctx, (char *)&header->devname, sizeof(header->devname));
+       MD5_Update(&ctx, data, size);
+
+       MD5_Final(header->digest, &ctx);
+}
+
+int main(int argc, char *argv[])
+{
+       struct wrgg03_header *header;
+       char *buf;
+       struct stat st;
+       int buflen;
+       int err;
+       int res = EXIT_FAILURE;
+
+       FILE *outfile, *infile;
+
+       progname = basename(argv[0]);
+
+       while ( 1 ) {
+               int c;
+
+               c = getopt(argc, argv, "bd:i:m:o:s:v:B:O:h");
+               if (c == -1)
+                       break;
+
+               switch (c) {
+               case 'b':
+                       big_endian = 1;
+                       break;
+               case 'B':
+                       buildno = optarg;
+                       break;
+               case 'd':
+                       devname = optarg;
+                       break;
+               case 'i':
+                       ifname = optarg;
+                       break;
+               case 'm':
+                       model = optarg;
+                       break;
+               case 'o':
+                       ofname = optarg;
+                       break;
+               case 's':
+                       signature = optarg;
+                       break;
+               case 'v':
+                       version = optarg;
+                       break;
+               case 'O':
+                       offset = strtoul(optarg, NULL, 0);
+                       break;
+               case 'h':
+                       usage(EXIT_SUCCESS);
+                       break;
+
+               default:
+                       usage(EXIT_FAILURE);
+                       break;
+               }
+       }
+
+       if (signature == NULL) {
+               ERR("no signature specified");
+               goto err;
+       }
+
+       if (ifname == NULL) {
+               ERR("no input file specified");
+               goto err;
+       }
+
+       if (ofname == NULL) {
+               ERR("no output file specified");
+               goto err;
+       }
+
+       if (devname == NULL) {
+               ERR("no device name specified");
+               goto err;
+       }
+
+       if (model == NULL) {
+               ERR("no model name specified");
+               goto err;
+       }
+
+       if (buildno == NULL) {
+               ERR("no build number specified");
+               goto err;
+       }
+
+       if (version == NULL) {
+               ERR("no version specified");
+               goto err;
+       }
+
+       err = stat(ifname, &st);
+       if (err){
+               ERRS("stat failed on %s", ifname);
+               goto err;
+       }
+
+       buflen = st.st_size + sizeof(struct wrgg03_header);
+       buf = malloc(buflen);
+       if (!buf) {
+               ERR("no memory for buffer\n");
+               goto err;
+       }
+
+       infile = fopen(ifname, "r");
+       if (infile == NULL) {
+               ERRS("could not open \"%s\" for reading", ifname);
+               goto err_free;
+       }
+
+       errno = 0;
+       fread(buf + sizeof(struct wrgg03_header), st.st_size, 1, infile);
+       if (errno != 0) {
+               ERRS("unable to read from file %s", ifname);
+               goto close_in;
+       }
+
+       header = (struct wrgg03_header *) buf;
+       memset(header, '\0', sizeof(struct wrgg03_header));
+
+       strncpy(header->signature, signature, sizeof(header->signature));
+       put_u32(&header->magic1, WRGG03_MAGIC, 0);
+       put_u32(&header->magic2, WRGG03_MAGIC, 0);
+       strncpy(header->version, version, sizeof(header->version));
+       strncpy(header->model, model, sizeof(header->model));
+       put_u32(&header->flag, flag, 0);
+       put_u32(&header->reserve, reserve, 0);
+       strncpy(header->buildno, buildno, sizeof(header->buildno));
+       put_u32(&header->size, st.st_size, big_endian);
+       put_u32(&header->offset, offset, big_endian);
+       strncpy(header->devname, devname, sizeof(header->devname));
+
+       get_digest(header, buf + sizeof(struct wrgg03_header), st.st_size);
+
+       outfile = fopen(ofname, "w");
+       if (outfile == NULL) {
+               ERRS("could not open \"%s\" for writing", ofname);
+               goto close_in;
+       }
+
+       errno = 0;
+       fwrite(buf, buflen, 1, outfile);
+       if (errno) {
+               ERRS("unable to write to file %s", ofname);
+               goto close_out;
+       }
+
+       fflush(outfile);
+
+       res = EXIT_SUCCESS;
+
+close_out:
+       fclose(outfile);
+       if (res != EXIT_SUCCESS)
+               unlink(ofname);
+close_in:
+       fclose(infile);
+err_free:
+       free(buf);
+err:
+       return res;
+}