SecurID API version 5 support from Michael Stroucken

1 files changed, 236 insertions, 0 deletions

diff --git a/auth/securid5.c b/auth/securid5.c
new file mode 100644
index 000000000..ad83a4cd4
--- /dev/null
+++ b/auth/securid5.c
@@ -0,0 +1,236 @@
+/*
+ * Copyright (c) 1999-2002 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 2002 Michael Stroucken <michael@stroucken.org>
+ * All rights reserved.
+ *
+ * This code is derived from software contributed by Michael Stroucken
+ * <michael@stroucken.org>
+ *
+ * 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.
+ *
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 4. Products derived from this software may not be called "Sudo" nor
+ *    may "Sudo" appear in their names without specific prior written
+ *    permission from the author.
+ *
+ * THIS SOFTWARE IS PROVIDED ``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 "config.h"
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdio.h>
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif /* STDC_HEADERS */
+#ifdef HAVE_STRING_H
+# include <string.h>
+#else
+# ifdef HAVE_STRINGS_H
+#  include <strings.h>
+# endif
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#include <pwd.h>
+
+/* Needed for SecurID v5.0 Authentication on UNIX */
+#define UNIX 1
+#include <acexport.h>
+#include <sdacmvls.h>
+
+#include "sudo.h"
+#include "sudo_auth.h"
+
+#ifndef lint
+/* static const char rcsid[] = "$Sudo$"; */
+#endif /* lint */
+
+/*
+ * securid_init - Initialises communications with ACE server
+ * Arguments in:
+ *     pw - UNUSED
+ *     promptp - UNUSED
+ *     auth - sudo authentication structure
+ *
+ * Results out:
+ *     auth - auth->data contains pointer to new SecurID handle
+ *     return code - Fatal if initialization unsuccessful, otherwise
+ *                   success.
+ */
+int
+securid_init(pw, promptp, auth)
+    struct passwd *pw;
+    char **promptp;
+    sudo_auth *auth;
+{
+    static SDI_HANDLE sd_dat;			/* SecurID handle */
+
+    auth->data = (VOID *) &sd_dat;		/* For method-specific data */
+
+    /* Start communications */
+    if (AceInitialize() != SD_FALSE)
+	return(AUTH_SUCCESS);
+
+    fprintf(stderr, "Failed to initialise ACE API library.\n");
+    return(AUTH_FATAL);
+}
+
+/*
+ * securid_setup - Initialises a SecurID transaction and locks out other
+ *     ACE servers
+ *
+ * Arguments in:
+ *     pw - struct passwd for username
+ *     promptp - UNUSED
+ *     auth - sudo authentication structure for SecurID handle
+ *
+ * Results out:
+ *     return code - Success if transaction started correctly, fatal
+ *                   otherwise
+ */
+int
+securid_setup(pw, promptp, auth)
+    struct passwd *pw;
+    char **promptp;
+    sudo_auth *auth;
+{
+    SDI_HANDLE *sd = (SDI_HANDLE *) auth->data;
+    int retval;
+
+    /* Re-initialize SecurID every time. */
+    if (SD_Init(sd) != ACM_OK) {
+	(void) fprintf(stderr, "%s: Cannot contact SecurID server\n", Argv[0]);
+	return(AUTH_FATAL);
+    }
+
+    /* Lock new PIN code */
+    retval = SD_Lock(*sd, pw->pw_name);
+
+    switch (retval) {
+        case ACE_UNDEFINED_USERNAME:
+		fprintf(stderr, "Invalid username length for SecurID\n");
+		return(AUTH_FATAL);
+
+	case ACE_ERR_INVALID_HANDLE:
+		fprintf(stderr, "Invalid Authentication Handle for SecurID\n");
+		return(AUTH_FATAL);
+
+	case ACM_ACCESS_DENIED:
+		fprintf(stderr, "SecurID communication has failed\n");
+		return(AUTH_FATAL);
+
+	case ACM_OK:
+		fprintf(stderr, "User ID locked for SecurID Authentication\n");
+		return(AUTH_SUCCESS);
+	}
+}
+
+/*
+ * securid_verify - Authenticates user and handles ACE responses
+ *
+ * Arguments in:
+ *     pw - struct passwd for username
+ *     pass - UNUSED
+ *     auth - sudo authentication structure for SecurID handle
+ *
+ * Results out:
+ *     return code - Success on successful authentication, failure on
+ *                   incorrect authentication, fatal on errors
+ */
+int
+securid_verify(pw, pass, auth)
+    struct passwd *pw;
+    char *pass;
+    sudo_auth *auth;
+{
+    SDI_HANDLE *sd = (SDI_HANDLE *) auth->data;
+    int rval;
+
+    pass = (char *) tgetpass("Enter your PASSCODE: ",
+	def_ival(I_PASSWD_TIMEOUT) * 60, tgetpass_flags);
+
+    /* Have ACE verify password */
+    switch (SD_Check(*sd, pass, pw->pw_name)) {
+	case ACE_UNDEFINED_PASSCODE:
+		fprintf(stderr, "Invalid passcode length for SecurID\n");
+		rval = AUTH_FATAL;
+		break;
+
+	case ACE_UNDEFINED_USERNAME:
+		fprintf(stderr, "Invalid username length for SecurID\n");
+		rval = AUTH_FATAL;
+		break;
+
+	case ACE_ERR_INVALID_HANDLE:
+		fprintf(stderr, "Invalid Authentication Handle for SecurID\n");
+		rval = AUTH_FATAL;
+
+	case ACM_ACCESS_DENIED:
+		rval = AUTH_FAILURE;
+		break;
+
+	case ACM_NEXT_CODE_REQUIRED:
+                /* Sometimes (when current token close to expire?)
+                   ACE challenges for the next token displayed
+                   (entered without the PIN) */
+        	pass = (char *) tgetpass("\
+!!! ATTENTION !!!\n\
+Wait for the token code to change, \n\
+then enter the new token code.\n", \
+		def_ival(I_PASSWD_TIMEOUT) * 60, tgetpass_flags);
+
+		if (SD_Next(*sd, pass) == ACM_OK) {
+			rval = AUTH_SUCCESS;
+			break;
+		}
+
+		rval = AUTH_FAILURE;
+		break;
+
+	case ACM_NEW_PIN_REQUIRED:
+                /*
+		 * This user's SecurID has not been activated yet,
+                 * or the pin has been reset
+		 */
+		/* XXX - Is setting up a new PIN within sudo's scope? */
+		SD_Pin(*sd, "");
+		fprintf(stderr, "Your SecurID access has not yet been set up.\n");
+		fprintf(stderr, "Please set up a PIN before you try to authenticate.\n");
+		rval = AUTH_FATAL;
+		break;
+    }
+
+    /* Free resources */
+    SD_Close(*sd);
+
+    /* Return stored state to calling process */
+    return(rval);
+}