diff options
author | Ben Lindstrom <mouring@eviladmin.org> | 2001-06-25 04:30:16 +0000 |
---|---|---|
committer | Ben Lindstrom <mouring@eviladmin.org> | 2001-06-25 04:30:16 +0000 |
commit | 83647ce474c37c8533e2aaf02f7366fbc0602ad9 (patch) | |
tree | 940fb5b1b82e7714a67188b8758d05674f935697 /auth.c | |
parent | 7d5ed3a07b0f00e961d636514ac42d4f1bc57a3e (diff) |
- markus@cvs.openbsd.org 2001/06/23 00:20:57
[auth2.c auth.c auth.h auth-rh-rsa.c]
*known_hosts2 is obsolete for hostbased authentication and
only used for backward compat. merge ssh1/2 hostkey check
and move it to auth.c
Diffstat (limited to 'auth.c')
-rw-r--r-- | auth.c | 43 |
1 files changed, 42 insertions, 1 deletions
@@ -23,7 +23,7 @@ */ #include "includes.h" -RCSID("$OpenBSD: auth.c,v 1.23 2001/05/24 11:12:42 markus Exp $"); +RCSID("$OpenBSD: auth.c,v 1.24 2001/06/23 00:20:57 markus Exp $"); #ifdef HAVE_LOGIN_H #include <login.h> @@ -46,6 +46,8 @@ RCSID("$OpenBSD: auth.c,v 1.23 2001/05/24 11:12:42 markus Exp $"); #include "canohost.h" #include "buffer.h" #include "bufaux.h" +#include "uidswap.h" +#include "tildexpand.h" /* import */ extern ServerOptions options; @@ -297,6 +299,45 @@ authorized_keys_file2(struct passwd *pw) return expand_filename(options.authorized_keys_file2, pw); } +/* return ok if key exists in sysfile or userfile */ +HostStatus +check_key_in_hostfiles(struct passwd *pw, Key *key, const char *host, + const char *sysfile, const char *userfile) +{ + Key *found; + char *user_hostfile; + struct stat st; + int host_status; + + /* Check if we know the host and its host key. */ + found = key_new(key->type); + host_status = check_host_in_hostfile(sysfile, host, key, found, NULL); + + if (host_status != HOST_OK && userfile != NULL) { + user_hostfile = tilde_expand_filename(userfile, pw->pw_uid); + if (options.strict_modes && + (stat(user_hostfile, &st) == 0) && + ((st.st_uid != 0 && st.st_uid != pw->pw_uid) || + (st.st_mode & 022) != 0)) { + log("Authentication refused for %.100s: " + "bad owner or modes for %.200s", + pw->pw_name, user_hostfile); + } else { + temporarily_use_uid(pw); + host_status = check_host_in_hostfile(user_hostfile, + host, key, found, NULL); + restore_uid(); + } + xfree(user_hostfile); + } + key_free(found); + + debug2("check_key_in_hostfiles: key %s for %s", host_status == HOST_OK ? + "ok" : "not found", host); + return host_status; +} + + /* * Check a given file for security. This is defined as all components * of the path to the file must either be owned by either the owner of |