[digest] md5sum and sha1sum commands
authorDaniel Verkamp <daniel@drv.nu>
Thu, 26 Mar 2009 22:04:31 +0000 (17:04 -0500)
committerMichael Brown <mcb30@etherboot.org>
Fri, 27 Mar 2009 04:29:54 +0000 (04:29 +0000)
Modified-by: Michael Brown <mcb30@etherboot.org>
Signed-off-by: Michael Brown <mcb30@etherboot.org>
src/config/general.h
src/core/config.c
src/hci/commands/digest_cmd.c [new file with mode: 0644]

index ee72d57..6dffdd6 100644 (file)
 #define SANBOOT_CMD            /* SAN boot commands */
 #define LOGIN_CMD              /* Login command */
 #undef TIME_CMD                /* Time commands */
+#undef DIGEST_CMD              /* Image crypto digest commands */
 
 /*
  * Obscure configuration options
index 59bd8fa..0662a3a 100644 (file)
@@ -199,6 +199,9 @@ REQUIRE_OBJECT ( login_cmd );
 #ifdef TIME_CMD
 REQUIRE_OBJECT ( time_cmd );
 #endif
+#ifdef DIGEST_CMD
+REQUIRE_OBJECT ( digest_cmd );
+#endif
 
 /*
  * Drag in miscellaneous objects
diff --git a/src/hci/commands/digest_cmd.c b/src/hci/commands/digest_cmd.c
new file mode 100644 (file)
index 0000000..bc6e551
--- /dev/null
@@ -0,0 +1,120 @@
+/*
+ * 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,
+};