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-rw-r--r--src/ladmin/md5calc.c42
1 files changed, 41 insertions, 1 deletions
diff --git a/src/ladmin/md5calc.c b/src/ladmin/md5calc.c
index 49a4aaa..cf9d958 100644
--- a/src/ladmin/md5calc.c
+++ b/src/ladmin/md5calc.c
@@ -1,4 +1,4 @@
-// $Id: md5calc.c,v 1.1.1.1 2004/09/10 17:26:53 MagicalTux Exp $
+// $Id: md5calc.c,v 1.1.1.1 2004/09/10 17:26:54 MagicalTux Exp $
/***********************************************************
* md5 calculation algorithm
*
@@ -10,6 +10,7 @@
#include "md5calc.h"
#include <string.h>
#include <stdio.h>
+#include "mt_rand.h"
#ifndef UINT_MAX
#define UINT_MAX 4294967295U
@@ -291,3 +292,42 @@ void MD5_String (const char *string, char *output)
digest[8], digest[9], digest[10], digest[11],
digest[12], digest[13], digest[14], digest[15]);
}
+
+// Hash a password with a salt.
+char *MD5_saltcrypt(const char *key, const char *salt)
+{
+ char buf[66], *sbuf = buf+32;
+ static char obuf[33];
+
+ // hash the key then the salt
+ // buf ends up as a 64char null terminated string
+ MD5_String(key, buf);
+ MD5_String(salt, sbuf);
+
+ // Hash the buffer back into sbuf
+ MD5_String(buf, sbuf);
+
+ snprintf(obuf, 32, "!%s$%s", salt, sbuf);
+ return(obuf);
+}
+
+char *make_salt() {
+ static char salt[6];
+ int i;
+ for (i=0; i<5; i++)
+ salt[i] = (char)((mt_rand() % 78) + 48);
+ salt[5] = '\0';
+ return(salt);
+}
+
+int pass_ok(const char *password, const char *crypted) {
+ char buf[40], *salt=buf+1;
+
+ strncpy(buf, crypted, 40);
+ *strchr(buf, '$') = '\0';
+
+ if (!strcmp(crypted, MD5_saltcrypt(password, salt)))
+ return(1);
+
+ return(0);
+}