X-Git-Url: http://git.vrable.net/?p=cumulus.git;a=blobdiff_plain;f=sha1.cc;h=7111f94ab40ad67fcb7745f90def6861728f0efe;hp=7a9c0fb52a377f27b5a747b9eb1223902ba645b9;hb=f38dd9bcb0caffd3fc9126b05788c936690e8288;hpb=25b6639fb1783e0061affa177e6d6d2131c457f5

diff --git a/sha1.cc b/sha1.cc
index 7a9c0fb..7111f94 100644
--- a/sha1.cc
+++ b/sha1.cc
@@ -1,38 +1,43 @@
 /* sha1.cc - Functions to compute SHA1 message digest of data streams
-   according to the NIST specification FIPS-180-1.
-
-   Copyright (C) 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
-   Copyright (C) 2006 Michael Vrable
-
-   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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Scott G. Miller
-   Credits:
-      Robert Klep <robert@ilse.nl>  -- Expansion function fix
-
-   Modified by Michael Vrable <mvrable@cs.ucsd.edu> to simplify the interface
-   and add an object-oriented wrapper.  Original code (in C) taken from GNU
-   coreutils (Debian package 5.97-5).
-*/
+ * according to the NIST specification FIPS-180-1.
+ * part of Cumulus: Smart Filesystem Backup to Dumb Servers
+ *
+ * Copyright (C) 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
+ * Copyright (C) 2006-2007  The Regents of the University of California
+ * Written by Scott G. Miller
+ * Additional Credits:
+ *    Robert Klep <robert@ilse.nl>  -- Expansion function fix
+ * Modifications by Michael Vrable <mvrable@cs.ucsd.edu> to integrate into
+ * Cumulus.
+ *
+ * Original code (in C) is taken from GNU coreutils (Debian package 5.97-5).
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
 
 #include "sha1.h"
 
 #include <stddef.h>
+#include <stdio.h>
 #include <string.h>
 #include <arpa/inet.h>
 
+#include <string.h>
+
+using std::string;
+
 /* SWAP does an endian swap on architectures that are little-endian,
    as SHA1 needs some data in a big-endian form.  */
 #define SWAP(n) htonl(n)
@@ -344,8 +349,46 @@ void SHA1Checksum::process(const void *data, size_t len)
     sha1_process_bytes(data, len, &ctx);
 }
 
+bool SHA1Checksum::process_file(const char *filename)
+{
+    FILE *f = fopen(filename, "rb");
+    if (f == NULL)
+        return false;
+
+    while (!feof(f)) {
+        char buf[4096];
+        size_t bytes = fread(buf, 1, sizeof(buf), f);
+
+        if (ferror(f)) {
+            fclose(f);
+            return false;
+        }
+
+        process(buf, bytes);
+    }
+
+    fclose(f);
+    return true;
+}
+
 const uint8_t *SHA1Checksum::checksum()
 {
     sha1_finish_ctx(&ctx, resbuf);
     return (const uint8_t *)resbuf;
 }
+
+string SHA1Checksum::checksum_str()
+{
+    uint8_t resbuf[20];
+    char hexbuf[4];
+    string result = "sha1=";
+
+    sha1_finish_ctx(&ctx, resbuf);
+
+    for (int i = 0; i < 20; i++) {
+        sprintf(hexbuf, "%02x", resbuf[i]);
+        result += hexbuf;
+    }
+
+    return result;
+}