1 files changed, 143 insertions, 0 deletions
diff --git a/ubi-utils/src/ubicrc32.c b/ubi-utils/src/ubicrc32.c
new file mode 100644
index 0000000..fb4ef49
--- /dev/null
+++ b/ubi-utils/src/ubicrc32.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Oliver Lohmann
+ *
+ * Calculate CRC32 with UBI start value for a given binary image.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <argp.h>
+#include <unistd.h>
+#include <errno.h>
+#include <mtd/ubi-header.h>
+
+#include "config.h"
+#include "crc32.h"
+
+#define BUFSIZE 4096
+
+const char *argp_program_version = PACKAGE_VERSION;
+const char *argp_program_bug_address = PACKAGE_BUGREPORT;
+static char doc[] = "\nVersion: " PACKAGE_VERSION "\n\tBuilt on "
+	BUILD_CPU" "BUILD_OS" at "__DATE__" "__TIME__"\n"
+	"\n"
+	"ubicrc32 - calculates the UBI CRC32 value and prints it to stdout.\n";
+
+static const char copyright [] __attribute__((unused)) =
+	"FIXME: insert license type"; /* FIXME */
+
+
+static struct argp_option options[] = {
+	{ name: "copyright", key: 'c', arg: NULL,    flags: 0,
+	  doc: "Print copyright information.",
+	  group: 1 },
+
+	{ name: NULL, key: 0, arg: NULL, flags: 0, doc: NULL, group: 0 },
+};
+
+typedef struct myargs {
+	FILE* fp_in;
+
+	char *arg1;
+	char **options;			/* [STRING...] */
+} myargs;
+
+static error_t
+parse_opt(int key, char *arg, struct argp_state *state)
+{
+	int err = 0;
+
+	myargs *args = state->input;
+
+	switch (key) {
+	case 'c':
+		fprintf(stderr, "%s\n", copyright);
+		exit(0);
+		break;
+	case ARGP_KEY_ARG:
+		args->fp_in = fopen(arg, "rb");
+		if ((args->fp_in) == NULL) {
+			fprintf(stderr,
+			"Cannot open file %s for input\n", arg);
+			exit(1);
+		}
+		args->arg1 = arg;
+		args->options = &state->argv[state->next];
+		state->next = state->argc;
+		break;
+	case ARGP_KEY_END:
+		if (err) {
+			fprintf(stderr, "\n");
+			argp_usage(state);
+			exit(1);
+		}
+		break;
+	default:
+		return(ARGP_ERR_UNKNOWN);
+	}
+
+	return 0;
+}
+
+static struct argp argp = {
+	options:     options,
+	parser:	     parse_opt,
+	args_doc:    "[file]",
+	doc:	     doc,
+	children:    NULL,
+	help_filter: NULL,
+	argp_domain: NULL,
+};
+
+int
+main(int argc, char **argv) {
+	int rc = 0;
+	uint32_t crc32_table[256];
+	uint8_t buf[BUFSIZE];
+	size_t read;
+	uint32_t crc32;
+
+	myargs args = {
+		.fp_in = stdin,
+		.arg1 = NULL,
+		.options = NULL,
+	};
+
+	argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, &args);
+
+	init_crc32_table(crc32_table);
+	crc32 = UBI_CRC32_INIT;
+	while (!feof(args.fp_in)) {
+		read = fread(buf, 1, BUFSIZE, args.fp_in);
+		if (ferror(args.fp_in)) {
+			fprintf(stderr, "I/O Error.");
+			exit(EXIT_FAILURE);
+		}
+		crc32 = clc_crc32(crc32_table, crc32, buf, read);
+	}
+
+	if (args.fp_in != stdin) {
+		fclose(args.fp_in);
+	}
+
+	fprintf(stdout, "0x%08x\n", crc32);
+	return rc;
+}