1 files changed, 112 insertions, 0 deletions

diff --git a/usr.sbin/ppp/auth.c b/usr.sbin/ppp/auth.c
new file mode 100644
index 0000000..d6a5f72
--- /dev/null
+++ b/usr.sbin/ppp/auth.c
@@ -0,0 +1,112 @@
+/*
+ *			PPP Secret Key Module
+ *
+ *	    Written by Toshiharu OHNO (tony-o@iij.ad.jp)
+ *
+ *   Copyright (C) 1994, Internet Initiative Japan, Inc. All rights reserverd.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the Internet Initiative Japan, Inc.  The name of the
+ * IIJ may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * $Id:$
+ *
+ *	TODO:
+ *		o Imprement check against with registerd IP addresses.
+ */
+#include "fsm.h"
+#include "ipcp.h"
+
+extern FILE *OpenSecret();
+extern void CloseSecret();
+
+int
+AuthValidate(fname, system, key)
+char *fname, *system, *key;
+{
+  FILE *fp;
+  int n;
+  char *vector[20];
+  char buff[200];
+  char passwd[100];
+
+  fp = OpenSecret(fname);
+  if (fp == NULL)
+    return(0);
+  while (fgets(buff, sizeof(buff), fp)) {
+    if (buff[0] == '#')
+      continue;
+    buff[strlen(buff)-1] = 0;
+    bzero(vector, sizeof(vector));
+    n = MakeArgs(buff, &vector);
+    if (n < 2)
+      continue;
+    if (strcmp(vector[0], system) == 0) {
+      ExpandString(vector[1], passwd, 0);
+      if (strcmp(passwd, key) == 0) {
+	CloseSecret(fp);
+        bzero(&DefHisAddress, sizeof(DefHisAddress));
+        n -= 2;
+        if (n > 0) {
+	  ParseAddr(n--, &vector[2],
+	    &DefHisAddress.ipaddr, &DefHisAddress.mask, &DefHisAddress.width);
+	}
+	IpcpInit();
+	return(1);	/* Valid */
+      }
+    }
+  }
+  CloseSecret(fp);
+  return(0);		/* Invalid */
+}
+
+char *
+AuthGetSecret(fname, system, len, setaddr)
+char *fname, *system;
+int len, setaddr;
+{
+  FILE *fp;
+  int n;
+  char *vector[20];
+  char buff[200];
+  static char passwd[100];
+
+  fp = OpenSecret(fname);
+  if (fp == NULL)
+    return(NULL);
+  while (fgets(buff, sizeof(buff), fp)) {
+    if (buff[0] == '#')
+      continue;
+    buff[strlen(buff)-1] = 0;
+    bzero(vector, sizeof(vector));
+    n = MakeArgs(buff, &vector);
+    if (n < 2)
+      continue;
+    if (strlen(vector[0]) == len && strncmp(vector[0], system, len) == 0) {
+      ExpandString(vector[1], passwd, 0);
+      if (setaddr) {
+        bzero(&DefHisAddress, sizeof(DefHisAddress));
+      }
+      n -= 2;
+      if (n > 0 && setaddr) {
+#ifdef DEBUG
+	LogPrintf(LOG_LCP, "*** n = %d, %s\n", n, vector[2]);
+#endif
+	ParseAddr(n--, &vector[2],
+	  &DefHisAddress.ipaddr, &DefHisAddress.mask, &DefHisAddress.width);
+	IpcpInit();
+      }
+      return(passwd);
+    }
+  }
+  CloseSecret(fp);
+  return(NULL);		/* Invalid */
+}