adds mkdapimg
authorJohn Crispin <john@openwrt.org>
Tue, 24 Jul 2012 20:38:49 +0000 (20:38 +0000)
committerJohn Crispin <john@openwrt.org>
Tue, 24 Jul 2012 20:38:49 +0000 (20:38 +0000)
Signed-off-by: Yoichi Shinoda <shinoda@jaist.ac.jp>
SVN-Revision: 32822

tools/firmware-utils/Makefile
tools/firmware-utils/src/mkdapimg.c [new file with mode: 0644]

index 4364223..05b588f 100644 (file)
@@ -57,6 +57,7 @@ define Host/Compile
        $(call cc,mkedimaximg)
        $(call cc,mkbrncmdline)
        $(call cc,mkbrnimg)
+       $(call cc,mkdapimg)
 endef
 
 define Host/Install
diff --git a/tools/firmware-utils/src/mkdapimg.c b/tools/firmware-utils/src/mkdapimg.c
new file mode 100644 (file)
index 0000000..8b0359f
--- /dev/null
@@ -0,0 +1,191 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <stdarg.h>
+#include <getopt.h>
+#include <string.h>
+#include <errno.h>
+
+#include <netinet/in.h>        // htonl
+
+// Usage: mkdapimg [-p] [-m <model>] -s <sig> -i <input> -o <output>
+//
+// e.g.: mkdapimg -s RT3052-AP-DAP1350-3 -i sysupgarde.bin -o factory.bin
+//
+// If the model string <model> is not given, we will assume that
+// the leading characters upto the first "-" is the model.
+//
+// The "-p" (patch) option is used to patch the exisiting image with the
+// specified model and signature.
+// The "-x" (fix) option will recalculate the payload size and checksum
+// during the patch mode operation.
+
+// The img_hdr_struct was taken from the D-Link SDK:
+// DAP-1350_A1_FW1.11NA_GPL/GPL_Source_Code/Uboot/DAP-1350/httpd/header.h
+
+#define MAX_MODEL_NAME_LEN     20
+#define MAX_SIG_LEN            30
+
+struct img_hdr_struct {
+       uint32_t checksum;
+       char model[MAX_MODEL_NAME_LEN];
+       char sig[MAX_SIG_LEN];
+       uint8_t partition;       
+       uint8_t hdr_len;
+       uint8_t rsv1;
+       uint8_t rsv2;    
+       uint32_t flash_byte_cnt;  
+} imghdr ;
+
+char *progname;
+
+void
+perrexit(int code, char *msg)
+{
+       fprintf(stderr, "%s: %s: %s\n", progname, msg, strerror(errno));
+       exit(code);
+}
+
+void
+usage()
+{
+       fprintf(stderr, "usage: %s [-p] [-m model] -s signature -i input -o output\n", progname);
+       exit(1);
+}
+
+int
+main(int ac, char *av[])
+{
+       char model[MAX_MODEL_NAME_LEN+1];
+       char signature[MAX_SIG_LEN+1];
+       int patchmode = 0;
+       int fixmode = 0;
+
+       FILE *ifile, *ofile;
+       int c;
+       uint32_t cksum;
+       uint32_t bcnt;
+
+       progname = basename(av[0]);
+       memset(model, 0, sizeof(model));
+       memset(signature, 0, sizeof(signature));
+
+       while ( 1 ) {
+               int c;
+
+               c = getopt(ac, av, "pxm:s:i:o:");
+               if (c == -1)
+                       break;
+
+               switch (c) {
+               case 'p':
+                       patchmode = 1;
+                       break;
+               case 'x':
+                       fixmode = 1;
+                       break;
+               case 'm':
+                       if (strlen(optarg) > MAX_MODEL_NAME_LEN) {
+                               fprintf(stderr, "%s: model name exceeds %d chars\n",
+                                       progname, MAX_MODEL_NAME_LEN);
+                               exit(1);
+                       }
+                       strcpy(model, optarg);
+                       break;
+               case 's':
+                       if (strlen(optarg) > MAX_SIG_LEN) {
+                               fprintf(stderr, "%s: signature exceeds %d chars\n",
+                                       progname, MAX_SIG_LEN);
+                               exit(1);
+                       }
+                       strcpy(signature, optarg);
+                       break;
+               case 'i':
+                       if ((ifile = fopen(optarg, "r")) == NULL)
+                               perrexit(1, optarg);
+                       break;
+               case 'o':
+                       if ((ofile = fopen(optarg, "w")) == NULL)
+                               perrexit(1, optarg);
+                       break;
+               default:
+                       usage();
+               }
+       }
+
+       if (signature[0] == 0 || ifile == NULL || ofile == NULL) {
+               usage();
+       }
+
+       if (model[0] == 0) {
+               char *p = strchr(signature, '-');
+               if (p == NULL) {
+                       fprintf(stderr, "%s: model name unknown\n", progname);
+                       exit(1);
+               }
+               if (p - signature > MAX_MODEL_NAME_LEN) {
+                       *p = 0;
+                       fprintf(stderr, "%s: auto model name failed, string %s too long\n", progname, signature);
+                       exit(1);
+               }
+               strncpy(model, signature, p - signature);
+       }
+
+       if (patchmode) {
+               if (fread(&imghdr, sizeof(imghdr), 1, ifile) < 0)
+                       perrexit(2, "fread on input");
+       }
+
+       for (bcnt = 0, cksum = 0 ; (c = fgetc(ifile)) != EOF ; bcnt++)
+               cksum += c & 0xff;
+
+       if (fseek(ifile, patchmode ? sizeof(imghdr) : 0, SEEK_SET) < 0)
+               perrexit(2, "fseek on input");
+
+       if (patchmode == 0) {
+               // Fill in the header
+               memset(&imghdr, 0, sizeof(imghdr));
+               imghdr.checksum = htonl(cksum);
+               imghdr.partition = 0 ; // don't care?
+               imghdr.hdr_len = sizeof(imghdr);
+               imghdr.flash_byte_cnt = htonl(bcnt);
+       } else {
+               if (ntohl(imghdr.checksum) != cksum) {
+                       fprintf(stderr, "%s: patch mode, checksum mismatch\n",
+                               progname);
+                       if (fixmode) {
+                               fprintf(stderr, "%s: fixing\n", progname);
+                               imghdr.checksum = htonl(cksum);
+                       } else
+                               exit(3);
+               } else if (ntohl(imghdr.flash_byte_cnt) != bcnt) {
+                       fprintf(stderr, "%s: patch mode, size mismatch\n",
+                               progname);
+                       if (fixmode) {
+                               fprintf(stderr, "%s: fixing\n", progname);
+                               imghdr.flash_byte_cnt = htonl(bcnt);
+                       } else
+                               exit(3);
+               }
+       }
+
+       strncpy(imghdr.model, model, MAX_MODEL_NAME_LEN);
+       strncpy(imghdr.sig, signature, MAX_SIG_LEN);
+
+       if (fwrite(&imghdr, sizeof(imghdr), 1, ofile) < 0)
+               perrexit(2, "fwrite header on output");
+
+       while ((c = fgetc(ifile)) != EOF) {
+               if (fputc(c, ofile) == EOF)
+                       perrexit(2, "fputc on output");
+       }
+
+       if (ferror(ifile))
+               perrexit(2, "fgetc on input");
+
+
+       fclose(ofile);
+       fclose(ifile);
+}