[tools] adds mkdapimg

Signed-off-by: Yoichi Shinoda <shinoda@jaist.ac.jp>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32822 3c298f89-4303-0410-b956-a3cf2f4a3e73

tools/firmware-utils/Makefile

@@ -57,6 +57,7 @@ define Host/Compile
 	$(call cc,mkedimaximg)
 	$(call cc,mkbrncmdline)
 	$(call cc,mkbrnimg)
+	$(call cc,mkdapimg)
 endef
 
 define Host/Install

tools/firmware-utils/src/mkdapimg.c

@@ -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);
+}