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-rw-r--r--gpxe/src/hci/commands/digest_cmd.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/gpxe/src/hci/commands/digest_cmd.c b/gpxe/src/hci/commands/digest_cmd.c
new file mode 100644
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+++ b/gpxe/src/hci/commands/digest_cmd.c
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+/*
+ * Copyright (C) 2009 Daniel Verkamp <daniel@drv.nu>.
+ *
+ * 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 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.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <gpxe/command.h>
+#include <gpxe/image.h>
+#include <gpxe/crypto.h>
+
+#include <gpxe/md5.h>
+#include <gpxe/sha1.h>
+
+/**
+ * "digest" command syntax message
+ *
+ * @v argv Argument list
+ */
+static void digest_syntax ( char **argv ) {
+ printf ( "Usage:\n"
+ " %s <image name>\n"
+ "\n"
+ "Calculate the %s of an image\n",
+ argv[0], argv[0] );
+}
+
+/**
+ * The "digest" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @v digest Digest algorithm
+ * @ret rc Exit code
+ */
+static int digest_exec ( int argc, char **argv,
+ struct digest_algorithm *digest ) {
+ const char *image_name;
+ struct image *image;
+ uint8_t digest_ctx[digest->ctxsize];
+ uint8_t digest_out[digest->digestsize];
+ uint8_t buf[128];
+ size_t offset;
+ size_t len;
+ size_t frag_len;
+ int i;
+ unsigned j;
+
+ if ( argc < 2 ||
+ !strcmp ( argv[1], "--help" ) ||
+ !strcmp ( argv[1], "-h" ) ) {
+ digest_syntax ( argv );
+ return 1;
+ }
+
+ for ( i = 1 ; i < argc ; i++ ) {
+ image_name = argv[i];
+
+ /* find image */
+ image = find_image ( image_name );
+ if ( ! image ) {
+ printf ( "No such image: %s\n", image_name );
+ continue;
+ }
+ offset = 0;
+ len = image->len;
+
+ /* calculate digest */
+ digest_init ( digest, digest_ctx );
+ while ( len ) {
+ frag_len = len;
+ if ( frag_len > sizeof ( buf ) )
+ frag_len = sizeof ( buf );
+ copy_from_user ( buf, image->data, offset, frag_len );
+ digest_update ( digest, digest_ctx, buf, frag_len );
+ len -= frag_len;
+ offset += frag_len;
+ }
+ digest_final ( digest, digest_ctx, digest_out );
+
+ for ( j = 0 ; j < sizeof ( digest_out ) ; j++ )
+ printf ( "%02x", digest_out[j] );
+
+ printf ( " %s\n", image->name );
+ }
+
+ return 0;
+}
+
+static int md5sum_exec ( int argc, char **argv ) {
+ return digest_exec ( argc, argv, &md5_algorithm );
+}
+
+static int sha1sum_exec ( int argc, char **argv ) {
+ return digest_exec ( argc, argv, &sha1_algorithm );
+}
+
+struct command md5sum_command __command = {
+ .name = "md5sum",
+ .exec = md5sum_exec,
+};
+
+struct command sha1sum_command __command = {
+ .name = "sha1sum",
+ .exec = sha1sum_exec,
+};