1 files changed, 84 insertions, 8 deletions

diff --git a/authfile.c b/authfile.c
index 4368cb941..0a5bae96f 100644
--- a/authfile.c
+++ b/authfile.c
@@ -1,21 +1,42 @@
 /*
- *
- * authfile.c
- *
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
- *
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
  *                    All rights reserved
- *
- * Created: Mon Mar 27 03:52:05 1995 ylo
- *
  * This file contains functions for reading and writing identity files, and
  * for reading the passphrase from the user.
  *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose.  Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ *
+ *
+ * Copyright (c) 2000 Markus Friedl.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: authfile.c,v 1.17 2000/06/20 01:39:38 markus Exp $");
+RCSID("$OpenBSD: authfile.c,v 1.19 2000/09/07 20:27:49 deraadt Exp $");
 
 #include <openssl/bn.h>
 #include <openssl/dsa.h>
@@ -262,6 +283,7 @@ load_public_key_rsa(const char *filename, RSA * pub, char **comment_return)
         return 1;
 }
 
+/* load public key from private-key file */
 int
 load_public_key(const char *filename, Key * key, char **comment_return)
 {
@@ -497,3 +519,57 @@ load_private_key(const char *filename, const char *passphrase, Key *key,
         close(fd);
         return ret;
 }
+
+int
+do_load_public_key(const char *filename, Key *k, char **commentp)
+{
+        FILE *f;
+        unsigned int bits;
+        char line[1024];
+        char *cp;
+
+        f = fopen(filename, "r");
+        if (f != NULL) {
+                while (fgets(line, sizeof(line), f)) {
+                        line[sizeof(line)-1] = '\0';
+                        cp = line;
+                        switch(*cp){
+                        case '#':
+                        case '\n':
+                        case '\0':
+                                continue;
+                        }
+                        /* Skip leading whitespace. */
+                        for (; *cp && (*cp == ' ' || *cp == '\t'); cp++)
+                                ;
+                        if (*cp) {
+                                bits = key_read(k, &cp);
+                                if (bits != 0) {
+                                        if (commentp)
+                                                *commentp=xstrdup(filename);
+                                        fclose(f);
+                                        return 1;
+                                }
+                        }
+                }
+                fclose(f);
+        }
+        return 0;
+}
+
+/* load public key from pubkey file */
+int
+try_load_public_key(const char *filename, Key *k, char **commentp)
+{
+        char pub[MAXPATHLEN];
+
+        if (do_load_public_key(filename, k, commentp) == 1)
+                return 1;
+        if (strlcpy(pub, filename, sizeof pub) >= MAXPATHLEN)
+                return 0;
+        if (strlcat(pub, ".pub", sizeof pub) >= MAXPATHLEN)
+                return 0;
+        if (do_load_public_key(pub, k, commentp) == 1)
+                return 1;
+        return 0;
+}