--- /dev/null
+/*
+ * Copyright (c) 1996, 1998-2005, 2010-2011
+ * 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.
+ * 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.
+ *
+ * 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.
+ */
+/*
+ * The code below basically comes from the examples supplied on
+ * the OSF DCE 1.0.3 manpages for the sec_login routines, with
+ * enough additional polishing to make the routine work with the
+ * rest of sudo.
+ *
+ * This code is known to work on HP 700 and 800 series systems
+ * running HP-UX 9.X and 10.X, with either HP's version 1.2.1 of DCE.
+ * (aka, OSF DCE 1.0.3) or with HP's version 1.4 of DCE (aka, OSF
+ * DCE 1.1).
+ */
+
+#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>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#include <pwd.h>
+
+#include <dce/rpc.h>
+#include <dce/sec_login.h>
+#include <dce/dce_error.h> /* required to call dce_error_inq_text routine */
+
+#include "sudoers.h"
+#include "sudo_auth.h"
+
+static int check_dce_status(error_status_t, char *);
+
+int
+sudo_dce_verify(struct passwd *pw, char *plain_pw, sudo_auth *auth)
+{
+ struct passwd temp_pw;
+ sec_passwd_rec_t password_rec;
+ sec_login_handle_t login_context;
+ boolean32 reset_passwd;
+ sec_login_auth_src_t auth_src;
+ error_status_t status;
+ debug_decl(sudo_dce_verify, SUDO_DEBUG_AUTH)
+
+ /*
+ * Create the local context of the DCE principal necessary
+ * to perform authenticated network operations. The network
+ * identity set up by this operation cannot be used until it
+ * is validated via sec_login_validate_identity().
+ */
+ if (sec_login_setup_identity((unsigned_char_p_t) pw->pw_name,
+ sec_login_no_flags, &login_context, &status)) {
+
+ if (check_dce_status(status, "sec_login_setup_identity(1):"))
+ debug_return_int(AUTH_FAILURE);
+
+ password_rec.key.key_type = sec_passwd_plain;
+ password_rec.key.tagged_union.plain = (idl_char *) plain_pw;
+ password_rec.pepper = NULL;
+ password_rec.version_number = sec_passwd_c_version_none;
+
+ /* Validate the login context with the password */
+ if (sec_login_validate_identity(login_context, &password_rec,
+ &reset_passwd, &auth_src, &status)) {
+
+ if (check_dce_status(status, "sec_login_validate_identity(1):"))
+ debug_return_int(AUTH_FAILURE);
+
+ /*
+ * Certify that the DCE Security Server used to set
+ * up and validate a login context is legitimate. Makes
+ * sure that we didn't get spoofed by another DCE server.
+ */
+ if (!sec_login_certify_identity(login_context, &status)) {
+ (void) fprintf(stderr, "Whoa! Bogus authentication server!\n");
+ (void) check_dce_status(status,"sec_login_certify_identity(1):");
+ debug_return_int(AUTH_FAILURE);
+ }
+ if (check_dce_status(status, "sec_login_certify_identity(2):"))
+ debug_return_int(AUTH_FAILURE);
+
+ /*
+ * Sets the network credentials to those specified
+ * by the now validated login context.
+ */
+ sec_login_set_context(login_context, &status);
+ if (check_dce_status(status, "sec_login_set_context:"))
+ debug_return_int(AUTH_FAILURE);
+
+ /*
+ * Oops, your credentials were no good. Possibly
+ * caused by clock times out of adjustment between
+ * DCE client and DCE security server...
+ */
+ if (auth_src != sec_login_auth_src_network) {
+ (void) fprintf(stderr,
+ "You have no network credentials.\n");
+ debug_return_int(AUTH_FAILURE);
+ }
+ /* Check if the password has aged and is thus no good */
+ if (reset_passwd) {
+ (void) fprintf(stderr,
+ "Your DCE password needs resetting.\n");
+ debug_return_int(AUTH_FAILURE);
+ }
+
+ /*
+ * We should be a valid user by this point. Pull the
+ * user's password structure from the DCE security
+ * server just to make sure. If we get it with no
+ * problems, then we really are legitimate...
+ */
+ sec_login_get_pwent(login_context, (sec_login_passwd_t) &temp_pw,
+ &status);
+ if (check_dce_status(status, "sec_login_get_pwent:"))
+ debug_return_int(AUTH_FAILURE);
+
+ /*
+ * If we get to here, then the pwent above properly fetched
+ * the password structure from the DCE registry, so the user
+ * must be valid. We don't really care what the user's
+ * registry password is, just that the user could be
+ * validated. In fact, if we tried to compare the local
+ * password to the DCE entry at this point, the operation
+ * would fail if the hidden password feature is turned on,
+ * because the password field would contain an asterisk.
+ * Also go ahead and destroy the user's DCE login context
+ * before we leave here (and don't bother checking the
+ * status), in order to clean up credentials files in
+ * /opt/dcelocal/var/security/creds. By doing this, we are
+ * assuming that the user will not need DCE authentication
+ * later in the program, only local authentication. If this
+ * is not true, then the login_context will have to be
+ * returned to the calling program, and the context purged
+ * somewhere later in the program.
+ */
+ sec_login_purge_context(&login_context, &status);
+ debug_return_int(AUTH_SUCCESS);
+ } else {
+ if(check_dce_status(status, "sec_login_validate_identity(2):"))
+ debug_return_int(AUTH_FAILURE);
+ sec_login_purge_context(&login_context, &status);
+ if(check_dce_status(status, "sec_login_purge_context:"))
+ debug_return_int(AUTH_FAILURE);
+ }
+ }
+ (void) check_dce_status(status, "sec_login_setup_identity(2):");
+ debug_return_int(AUTH_FAILURE);
+}
+
+/* Returns 0 for DCE "ok" status, 1 otherwise */
+static int
+check_dce_status(error_status_t input_status, char *comment)
+{
+ int error_stat;
+ unsigned char error_string[dce_c_error_string_len];
+ debug_decl(check_dce_status, SUDO_DEBUG_AUTH)
+
+ if (input_status == rpc_s_ok)
+ debug_return_bool(0);
+ dce_error_inq_text(input_status, error_string, &error_stat);
+ (void) fprintf(stderr, "%s %s\n", comment, error_string);
+ debug_return_bool(1);
+}
projects / debian / sudo / blobdiff