[PATCH] add support for BSD-style MD5 checksums

[Joe Orton]

The BSD 'md5' program outputs lines like

MD5 (base.tgz) = 21df9ae7c9968b1bf2e2465945c53a5c

This patch allows md5sum to parse these lines.

Regards,

joe

--- md5sum.c.orig       Tue Apr 24 08:19:50 2001
+++ md5sum.c    Tue Apr 24 08:40:10 2001
@@ -155,17 +155,62 @@
   exit (status == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
 }
 
+#define ISWHITE(c) ((c) == ' ' || (c) == '\t')
+
+static int
+bsd_split_3 (char *s, size_t s_len, unsigned char **u, int *binary, char **w)
+{
+    size_t i, j;
+    
+    i = 0;
+    while (ISWHITE (s[i]))
+       ++i;
+
+    /* skip "MD5 (" */
+    i += 5;
+    *w = &s[i];
+    
+    /* Find end of filename. The BSD 'md5' does not escape filenames, so
+     * search backwards for the last ')'. */
+    j = s_len - 1;
+    while (s[j] != ')' && j > i)
+       j--;
+    
+    if (s[j] != ')')
+       return 1;
+    
+    s[j++] = '\0';
+
+    while (ISWHITE(s[j]))
+       j++;
+    
+    if (s[j] != '=')
+       return 1;
+    
+    j++;
+
+    while (ISWHITE(s[j]))
+       j++;
+
+    *binary = 0;
+
+    *u = (unsigned char *) &s[j];
+    return 0;
+}
+
 static int
 split_3 (char *s, size_t s_len, unsigned char **u, int *binary, char **w)
 {
   size_t i;
   int escaped_filename = 0;
 
-#define ISWHITE(c) ((c) == ' ' || (c) == '\t')
-
   i = 0;
   while (ISWHITE (s[i]))
     ++i;
+
+  /* Check for BSD-style checksum line. */
+  if (strncmp(&s[i], "MD5 (", 5) == 0)
+      return bsd_split_3(s, s_len, u, binary, w);
 
   /* The line must have at least `min_digest_line_length - 1' (or one more, if
      the first is a backslash) more characters to contain correct message 
digest