#include "stdio-util.h"
#include "strv.h"
#include "terminal-util.h"
+#include "user-util.h"
+#include "userdb.h"
#define LOGIN_SLOW_BUS_CALL_TIMEOUT_USEC (2*USEC_PER_MINUTE)
return 0;
}
-static int get_user_data(
+static int acquire_user_record(
pam_handle_t *handle,
- const char **ret_username,
- struct passwd **ret_pw) {
+ UserRecord **ret_record) {
- const char *username = NULL;
- struct passwd *pw = NULL;
+ _cleanup_(user_record_unrefp) UserRecord *ur = NULL;
+ const char *username = NULL, *json = NULL;
int r;
assert(handle);
- assert(ret_username);
- assert(ret_pw);
r = pam_get_user(handle, &username, NULL);
if (r != PAM_SUCCESS) {
if (isempty(username)) {
pam_syslog(handle, LOG_ERR, "User name not valid.");
- return PAM_AUTH_ERR;
+ return PAM_SERVICE_ERR;
}
- pw = pam_modutil_getpwnam(handle, username);
- if (!pw) {
- pam_syslog(handle, LOG_ERR, "Failed to get user data.");
- return PAM_USER_UNKNOWN;
+ /* If pam_systemd_homed (or some other module) already acqired the user record we can reuse it
+ * here. */
+ r = pam_get_data(handle, "systemd-user-record", (const void**) &json);
+ if (r != PAM_SUCCESS || !json) {
+ _cleanup_free_ char *formatted = NULL;
+
+ if (!IN_SET(r, PAM_SUCCESS, PAM_NO_MODULE_DATA)) {
+ pam_syslog(handle, LOG_ERR, "Failed to get PAM user record data: %s", pam_strerror(handle, r));
+ return r;
+ }
+
+ /* Request the record ourselves */
+ r = userdb_by_name(username, 0, &ur);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to get user record: %s", strerror_safe(r));
+ return PAM_USER_UNKNOWN;
+ }
+
+ r = json_variant_format(ur->json, 0, &formatted);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to format user JSON: %s", strerror_safe(r));
+ return PAM_SERVICE_ERR;
+ }
+
+ /* And cache it for everyone else */
+ r = pam_set_data(handle, "systemd-user-record", formatted, pam_cleanup_free);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to set PAM user record data: %s", pam_strerror(handle, r));
+ return r;
+ }
+
+ TAKE_PTR(formatted);
+ } else {
+ _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+
+ /* Parse cached record */
+ r = json_parse(json, JSON_PARSE_SENSITIVE, &v, NULL, NULL);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to parse JSON user record: %s", strerror_safe(r));
+ return PAM_SERVICE_ERR;
+ }
+
+ ur = user_record_new();
+ if (!ur)
+ return pam_log_oom(handle);
+
+ r = user_record_load(ur, v, USER_RECORD_LOAD_REFUSE_SECRET);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to load user record: %s", strerror_safe(r));
+ return PAM_SERVICE_ERR;
+ }
+
+ /* Safety check if cached record actually matches what we are looking for */
+ if (!streq_ptr(username, ur->user_name)) {
+ pam_syslog(handle, LOG_ERR, "Acquired user record does not match user name.");
+ return PAM_SERVICE_ERR;
+ }
+ }
+
+ if (!uid_is_valid(ur->uid)) {
+ pam_syslog(handle, LOG_ERR, "Acquired user record does not have a UID.");
+ return PAM_SERVICE_ERR;
}
- *ret_pw = pw;
- *ret_username = username;
+ if (ret_record)
+ *ret_record = TAKE_PTR(ur);
return PAM_SUCCESS;
}
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
const char
- *username, *id, *object_path, *runtime_path,
+ *id, *object_path, *runtime_path,
*service = NULL,
*tty = NULL, *display = NULL,
*remote_user = NULL, *remote_host = NULL,
*class_pam = NULL, *type_pam = NULL, *cvtnr = NULL, *desktop = NULL, *desktop_pam = NULL,
*memory_max = NULL, *tasks_max = NULL, *cpu_weight = NULL, *io_weight = NULL, *runtime_max_sec = NULL;
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_(user_record_unrefp) UserRecord *ur = NULL;
int session_fd = -1, existing, r;
bool debug = false, remote;
- struct passwd *pw;
uint32_t vtnr = 0;
uid_t original_uid;
if (debug)
pam_syslog(handle, LOG_DEBUG, "pam-systemd initializing");
- r = get_user_data(handle, &username, &pw);
+ r = acquire_user_record(handle, &ur);
if (r != PAM_SUCCESS)
return r;
if (streq_ptr(service, "systemd-user")) {
char rt[STRLEN("/run/user/") + DECIMAL_STR_MAX(uid_t)];
- xsprintf(rt, "/run/user/"UID_FMT, pw->pw_uid);
- if (validate_runtime_directory(handle, rt, pw->pw_uid)) {
+ xsprintf(rt, "/run/user/"UID_FMT, ur->uid);
+ if (validate_runtime_directory(handle, rt, ur->uid)) {
r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", rt, 0);
if (r != PAM_SUCCESS) {
pam_syslog(handle, LOG_ERR, "Failed to set runtime dir: %s", pam_strerror(handle, r));
}
}
- r = export_legacy_dbus_address(handle, pw->pw_uid, rt);
+ r = export_legacy_dbus_address(handle, ur->uid, rt);
if (r != PAM_SUCCESS)
return r;
if (debug) {
pam_syslog(handle, LOG_DEBUG, "Asking logind to create session: "
"uid="UID_FMT" pid="PID_FMT" service=%s type=%s class=%s desktop=%s seat=%s vtnr=%"PRIu32" tty=%s display=%s remote=%s remote_user=%s remote_host=%s",
- pw->pw_uid, getpid_cached(),
+ ur->uid, getpid_cached(),
strempty(service),
type, class, strempty(desktop),
strempty(seat), vtnr, strempty(tty), strempty(display),
return pam_bus_log_create_error(handle, r);
r = sd_bus_message_append(m, "uusssssussbss",
- (uint32_t) pw->pw_uid,
+ (uint32_t) ur->uid,
0,
service,
type,
if (r != PAM_SUCCESS)
return r;
- if (original_uid == pw->pw_uid) {
+ if (original_uid == ur->uid) {
/* Don't set $XDG_RUNTIME_DIR if the user we now
* authenticated for does not match the original user
* of the session. We do this in order not to result
* in privileged apps clobbering the runtime directory
* unnecessarily. */
- if (validate_runtime_directory(handle, runtime_path, pw->pw_uid)) {
+ if (validate_runtime_directory(handle, runtime_path, ur->uid)) {
r = update_environment(handle, "XDG_RUNTIME_DIR", runtime_path);
if (r != PAM_SUCCESS)
return r;
}
- r = export_legacy_dbus_address(handle, pw->pw_uid, runtime_path);
+ r = export_legacy_dbus_address(handle, ur->uid, runtime_path);
if (r != PAM_SUCCESS)
return r;
}
projects / thirdparty / systemd.git / commitdiff
