Rework source layout in preparation for modular sudo.

2010-02-20 09:14:01 -05:00
parent 28c24027ec
commit e90fa482f9
151 changed files with 0 additions and 0 deletions
--- a/plugins/sudoers/auth/kerb4.c
+++ b/plugins/sudoers/auth/kerb4.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 1999-2005, 2007 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+#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>
+#include <krb.h>
+
+#include "sudo.h"
+#include "sudo_auth.h"
+
+int
+kerb4_init(pw, promptp, auth)
+    struct passwd *pw;
+    char **promptp;
+    sudo_auth *auth;
+{
+    static char realm[REALM_SZ];
+
+    /* Don't try to verify root */
+    if (pw->pw_uid == 0)
+	return(AUTH_FAILURE);
+
+    /* Get the local realm, or retrun failure (no krb.conf) */
+    if (krb_get_lrealm(realm, 1) != KSUCCESS)
+	return(AUTH_FAILURE);
+
+    /* Stash a pointer to the realm (used in kerb4_verify) */
+    auth->data = (void *) realm;
+
+    return(AUTH_SUCCESS);
+}
+
+int
+kerb4_verify(pw, pass, auth)
+    struct passwd *pw;
+    char *pass;
+    sudo_auth *auth;
+{
+    char tkfile[sizeof(_PATH_SUDO_TIMEDIR) + 4 + MAX_UID_T_LEN];
+    char *realm = (char *) auth->data;
+    int error;
+
+    /*
+     * Set the ticket file to be in sudo sudo timedir so we don't
+     * wipe out other (real) kerberos tickets.
+     */
+    (void) snprintf(tkfile, sizeof(tkfile), "%s/tkt%lu",
+	_PATH_SUDO_TIMEDIR, (unsigned long) pw->pw_uid);
+    (void) krb_set_tkt_string(tkfile);
+
+    /* Convert the password to a ticket given. */
+    error = krb_get_pw_in_tkt(pw->pw_name, "", realm, "krbtgt", realm,
+	DEFAULT_TKT_LIFE, pass);
+
+    switch (error) {
+	case INTK_OK:
+	    dest_tkt();			/* we are done with the temp ticket */
+	    return(AUTH_SUCCESS);
+	    break;
+	case INTK_BADPW:
+	case KDC_PR_UNKNOWN:
+	    break;
+	default:
+	    (void) fprintf(stderr, "Warning: Kerberos error: %s\n",
+		krb_err_txt[error]);
+    }
+
+    return(AUTH_FAILURE);
+}