--- /dev/null
+/*
+ * Copyright (c) 2015 Andreas Schneider <asn@samba.org>
+ * Copyright (c) 2015 Jakub Hrozek <jakub.hrozek@posteo.se>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef HAVE_SECURITY_PAM_APPL_H
+#include <security/pam_appl.h>
+#endif
+#ifdef HAVE_SECURITY_PAM_MODULES_H
+#include <security/pam_modules.h>
+#endif
+
+#include "config.h"
+
+/* GCC have printf type attribute check. */
+#ifdef HAVE_FUNCTION_ATTRIBUTE_FORMAT
+#define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
+#else
+#define PRINTF_ATTRIBUTE(a,b)
+#endif /* HAVE_FUNCTION_ATTRIBUTE_FORMAT */
+
+/*****************
+ * LOGGING
+ *****************/
+
+enum pwrap_dbglvl_e {
+ PWRAP_LOG_ERROR = 0,
+ PWRAP_LOG_WARN,
+ PWRAP_LOG_DEBUG,
+ PWRAP_LOG_TRACE
+};
+
+static void pwrap_log(enum pwrap_dbglvl_e dbglvl,
+ const char *function,
+ const char *format, ...) PRINTF_ATTRIBUTE(3, 4);
+# define PWRAP_LOG(dbglvl, ...) pwrap_log((dbglvl), __func__, __VA_ARGS__)
+
+static void pwrap_vlog(enum pwrap_dbglvl_e dbglvl,
+ const char *function,
+ const char *format,
+ va_list args) PRINTF_ATTRIBUTE(3, 0);
+
+static void pwrap_vlog(enum pwrap_dbglvl_e dbglvl,
+ const char *function,
+ const char *format,
+ va_list args)
+{
+ char buffer[1024];
+ const char *d;
+ unsigned int lvl = 0;
+ const char *prefix = "PWRAP";
+
+ d = getenv("PAM_WRAPPER_DEBUGLEVEL");
+ if (d != NULL) {
+ lvl = atoi(d);
+ }
+
+ if (lvl < dbglvl) {
+ return;
+ }
+
+ vsnprintf(buffer, sizeof(buffer), format, args);
+
+ switch (dbglvl) {
+ case PWRAP_LOG_ERROR:
+ prefix = "PWRAP_ERROR";
+ break;
+ case PWRAP_LOG_WARN:
+ prefix = "PWRAP_WARN";
+ break;
+ case PWRAP_LOG_DEBUG:
+ prefix = "PWRAP_DEBUG";
+ break;
+ case PWRAP_LOG_TRACE:
+ prefix = "PWRAP_TRACE";
+ break;
+ }
+
+ fprintf(stderr,
+ "%s(%d) - PAM_SET_ITEM %s: %s\n",
+ prefix,
+ (int)getpid(),
+ function,
+ buffer);
+}
+
+static void pwrap_log(enum pwrap_dbglvl_e dbglvl,
+ const char *function,
+ const char *format, ...)
+{
+ va_list va;
+
+ va_start(va, format);
+ pwrap_vlog(dbglvl, function, format, va);
+ va_end(va);
+}
+
+#define ITEM_FILE_KEY "item_file="
+
+static const char *envs[] = {
+#ifndef HAVE_OPENPAM
+ "PAM_SERVICE",
+#endif
+ "PAM_USER",
+ "PAM_USER_PROMPT",
+ "PAM_TTY",
+ "PAM_RUSER",
+ "PAM_RHOST",
+ "PAM_AUTHTOK",
+ "PAM_OLDAUTHTOK",
+#ifdef PAM_XDISPLAY
+ "PAM_XDISPLAY",
+#endif
+#ifdef PAM_AUTHTOK_TYPE
+ "PAM_AUTHTOK_TYPE",
+#endif
+ NULL
+};
+
+static const int items[] = {
+#ifndef HAVE_OPENPAM
+ PAM_SERVICE,
+#endif
+ PAM_USER,
+ PAM_USER_PROMPT,
+ PAM_TTY,
+ PAM_RUSER,
+ PAM_RHOST,
+ PAM_AUTHTOK,
+ PAM_OLDAUTHTOK,
+#ifdef PAM_XDISPLAY
+ PAM_XDISPLAY,
+#endif
+#ifdef PAM_AUTHTOK_TYPE
+ PAM_AUTHTOK_TYPE,
+#endif
+};
+
+static void pam_setitem_env(pam_handle_t *pamh)
+{
+ int i;
+ int rv;
+ const char *v;
+
+ for (i = 0; envs[i] != NULL; i++) {
+ v = getenv(envs[i]);
+ if (v == NULL) {
+ continue;
+ }
+
+ PWRAP_LOG(PWRAP_LOG_TRACE, "%s=%s", envs[i], v);
+
+ rv = pam_set_item(pamh, items[i], v);
+ if (rv != PAM_SUCCESS) {
+ continue;
+ }
+ }
+}
+
+PAM_EXTERN int
+pam_sm_authenticate(pam_handle_t *pamh, int flags,
+ int argc, const char *argv[])
+{
+ (void) flags; /* unused */
+ (void) argc; /* unused */
+ (void) argv; /* unused */
+
+ PWRAP_LOG(PWRAP_LOG_TRACE, "AUTHENTICATE");
+
+ pam_setitem_env(pamh);
+ return PAM_SUCCESS;
+}
+
+PAM_EXTERN int
+pam_sm_setcred(pam_handle_t *pamh, int flags,
+ int argc, const char *argv[])
+{
+ (void) flags; /* unused */
+ (void) argc; /* unused */
+ (void) argv; /* unused */
+
+ PWRAP_LOG(PWRAP_LOG_TRACE, "SETCRED");
+
+ pam_setitem_env(pamh);
+ return PAM_SUCCESS;
+}
+
+PAM_EXTERN int
+pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
+ int argc, const char *argv[])
+{
+ (void) flags; /* unused */
+ (void) argc; /* unused */
+ (void) argv; /* unused */
+
+ PWRAP_LOG(PWRAP_LOG_TRACE, "ACCT_MGMT");
+
+ pam_setitem_env(pamh);
+ return PAM_SUCCESS;
+}
+
+PAM_EXTERN int
+pam_sm_open_session(pam_handle_t *pamh, int flags,
+ int argc, const char *argv[])
+{
+ (void) flags; /* unused */
+ (void) argc; /* unused */
+ (void) argv; /* unused */
+
+ PWRAP_LOG(PWRAP_LOG_TRACE, "OPEN_SESSION");
+
+ pam_setitem_env(pamh);
+ return PAM_SUCCESS;
+}
+
+PAM_EXTERN int
+pam_sm_close_session(pam_handle_t *pamh, int flags,
+ int argc, const char *argv[])
+{
+ (void) flags; /* unused */
+ (void) argc; /* unused */
+ (void) argv; /* unused */
+
+ PWRAP_LOG(PWRAP_LOG_TRACE, "CLOSE_SESSION");
+
+ pam_setitem_env(pamh);
+ return PAM_SUCCESS;
+}
+
+PAM_EXTERN int
+pam_sm_chauthtok(pam_handle_t *pamh, int flags,
+ int argc, const char *argv[])
+{
+ (void) flags; /* unused */
+ (void) argc; /* unused */
+ (void) argv; /* unused */
+
+ PWRAP_LOG(PWRAP_LOG_TRACE, "CHAUTHTOK");
+
+ pam_setitem_env(pamh);
+ return PAM_SUCCESS;
+}
git.samba.org / bbaumbach / samba-autobuild / .git / blobdiff