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-rw-r--r--src/login/pam-module.c224
1 files changed, 85 insertions, 139 deletions
diff --git a/src/login/pam-module.c b/src/login/pam-module.c
index 3b6b163a47..3667425a8c 100644
--- a/src/login/pam-module.c
+++ b/src/login/pam-module.c
@@ -36,7 +36,7 @@
#include "audit.h"
#include "macro.h"
#include "strv.h"
-#include "dbus-common.h"
+#include "bus-util.h"
#include "def.h"
#include "socket-util.h"
#include "fileio.h"
@@ -181,19 +181,17 @@ _public_ PAM_EXTERN int pam_sm_open_session(
struct passwd *pw;
bool debug = false;
const char *username, *id, *object_path, *runtime_path, *service = NULL, *tty = NULL, *display = NULL, *remote_user = NULL, *remote_host = NULL, *seat = NULL, *type = NULL, *class = NULL, *class_pam = NULL, *cvtnr = NULL;
- DBusError error;
uint32_t uid, pid;
- DBusMessageIter iter, sub;
int session_fd = -1;
- DBusConnection *bus = NULL;
- DBusMessage *m = NULL, *reply = NULL;
- dbus_bool_t remote, existing;
- int r;
+ bool remote, existing;
uint32_t vtnr = 0;
+ int r;
- assert(handle);
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- dbus_error_init(&error);
+ assert(handle);
if (debug)
pam_syslog(handle, LOG_INFO, "pam-systemd initializing");
@@ -224,50 +222,27 @@ _public_ PAM_EXTERN int pam_sm_open_session(
if (streq_ptr(service, "systemd-user")) {
_cleanup_free_ char *p = NULL, *rt = NULL;
- if (asprintf(&p, "/run/systemd/users/%lu", (unsigned long) pw->pw_uid) < 0) {
- r = PAM_BUF_ERR;
- goto finish;
- }
+ if (asprintf(&p, "/run/systemd/users/%lu", (unsigned long) pw->pw_uid) < 0)
+ return PAM_BUF_ERR;
r = parse_env_file(p, NEWLINE,
"RUNTIME", &rt,
NULL);
- if (r < 0 && r != -ENOENT) {
- r = PAM_SESSION_ERR;
- goto finish;
- }
+ if (r < 0 && r != -ENOENT)
+ return PAM_SESSION_ERR;
if (rt) {
r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", rt, 0);
if (r != PAM_SUCCESS) {
pam_syslog(handle, LOG_ERR, "Failed to set runtime dir.");
- goto finish;
+ return r;
}
}
- r = PAM_SUCCESS;
- goto finish;
- }
-
- dbus_connection_set_change_sigpipe(FALSE);
-
- bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
- if (!bus) {
- pam_syslog(handle, LOG_ERR, "Failed to connect to system bus: %s", bus_error_message(&error));
- r = PAM_SESSION_ERR;
- goto finish;
+ return PAM_SUCCESS;
}
- m = dbus_message_new_method_call(
- "org.freedesktop.login1",
- "/org/freedesktop/login1",
- "org.freedesktop.login1.Manager",
- "CreateSession");
- if (!m) {
- pam_syslog(handle, LOG_ERR, "Could not allocate create session message.");
- r = PAM_BUF_ERR;
- goto finish;
- }
+ /* Otherwise, we ask logind to create a session for us */
uid = pw->pw_uid;
pid = getpid();
@@ -342,32 +317,12 @@ _public_ PAM_EXTERN int pam_sm_open_session(
!streq(remote_host, "localhost") &&
!streq(remote_host, "localhost.localdomain");
- if (!dbus_message_append_args(m,
- DBUS_TYPE_UINT32, &uid,
- DBUS_TYPE_UINT32, &pid,
- DBUS_TYPE_STRING, &service,
- DBUS_TYPE_STRING, &type,
- DBUS_TYPE_STRING, &class,
- DBUS_TYPE_STRING, &seat,
- DBUS_TYPE_UINT32, &vtnr,
- DBUS_TYPE_STRING, &tty,
- DBUS_TYPE_STRING, &display,
- DBUS_TYPE_BOOLEAN, &remote,
- DBUS_TYPE_STRING, &remote_user,
- DBUS_TYPE_STRING, &remote_host,
- DBUS_TYPE_INVALID)) {
- pam_syslog(handle, LOG_ERR, "Could not attach parameters to message.");
- r = PAM_BUF_ERR;
- goto finish;
- }
-
- dbus_message_iter_init_append(m, &iter);
+ /* Talk to logind over the message bug */
- if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sv)", &sub) ||
- !dbus_message_iter_close_container(&iter, &sub)) {
- pam_syslog(handle, LOG_ERR, "Could not attach parameters to message.");
- r = PAM_BUF_ERR;
- goto finish;
+ r = sd_bus_open_system(&bus);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to connect to system bus: %s", strerror(-r));
+ return PAM_SESSION_ERR;
}
if (debug)
@@ -375,23 +330,47 @@ _public_ PAM_EXTERN int pam_sm_open_session(
"uid=%u pid=%u service=%s type=%s class=%s seat=%s vtnr=%u tty=%s display=%s remote=%s remote_user=%s remote_host=%s",
uid, pid, service, type, class, seat, vtnr, tty, display, yes_no(remote), remote_user, remote_host);
- reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
- if (!reply) {
- pam_syslog(handle, LOG_ERR, "Failed to create session: %s", bus_error_message(&error));
- r = PAM_SESSION_ERR;
- goto finish;
+ r = sd_bus_call_method(bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "CreateSession",
+ &error,
+ &reply,
+ "uussssussbssa(sv)",
+ uid,
+ pid,
+ service,
+ type,
+ class,
+ seat,
+ vtnr,
+ tty,
+ display,
+ remote,
+ remote_user,
+ remote_host,
+ 0);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to communicate with systemd-logind: %s", strerror(-r));
+ if (error.name || error.message)
+ pam_syslog(handle, LOG_ERR, "systemd-logind returned %s: %s",
+ error.name ?: "unknown error",
+ error.message ?: "no message");
+ return PAM_SYSTEM_ERR;
}
- if (!dbus_message_get_args(reply, &error,
- DBUS_TYPE_STRING, &id,
- DBUS_TYPE_OBJECT_PATH, &object_path,
- DBUS_TYPE_STRING, &runtime_path,
- DBUS_TYPE_UNIX_FD, &session_fd,
- DBUS_TYPE_STRING, &seat,
- DBUS_TYPE_UINT32, &vtnr,
- DBUS_TYPE_BOOLEAN, &existing,
- DBUS_TYPE_INVALID)) {
- pam_syslog(handle, LOG_ERR, "Failed to parse message: %s", bus_error_message(&error));
+ r = sd_bus_message_read(reply,
+ "soshsub",
+ &id,
+ &object_path,
+ &runtime_path,
+ &session_fd,
+ &seat,
+ &vtnr,
+ &existing);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR, "Failed to parse message: %s", strerror(-r));
r = PAM_SESSION_ERR;
goto finish;
}
@@ -436,35 +415,20 @@ _public_ PAM_EXTERN int pam_sm_open_session(
r = pam_set_data(handle, "systemd.existing", INT_TO_PTR(!!existing), NULL);
if (r != PAM_SUCCESS) {
pam_syslog(handle, LOG_ERR, "Failed to install existing flag.");
- return r;
+ goto finish;
}
if (session_fd >= 0) {
r = pam_set_data(handle, "systemd.session-fd", INT_TO_PTR(session_fd+1), NULL);
if (r != PAM_SUCCESS) {
pam_syslog(handle, LOG_ERR, "Failed to install session fd.");
- return r;
+ goto finish;
}
}
- session_fd = -1;
-
- r = PAM_SUCCESS;
+ return PAM_SUCCESS;
finish:
- dbus_error_free(&error);
-
- if (bus) {
- dbus_connection_close(bus);
- dbus_connection_unref(bus);
- }
-
- if (m)
- dbus_message_unref(m);
-
- if (reply)
- dbus_message_unref(reply);
-
if (session_fd >= 0)
close_nointr_nofail(session_fd);
@@ -478,14 +442,13 @@ _public_ PAM_EXTERN int pam_sm_close_session(
const void *p = NULL, *existing = NULL;
const char *id;
- DBusConnection *bus = NULL;
- DBusMessage *m = NULL, *reply = NULL;
- DBusError error;
int r;
- assert(handle);
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- dbus_error_init(&error);
+ assert(handle);
/* Only release session if it wasn't pre-existing when we
* tried to create it */
@@ -499,35 +462,31 @@ _public_ PAM_EXTERN int pam_sm_close_session(
* that it doesn't just go and slaughter us
* immediately after closing the fd */
- bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
- if (!bus) {
- pam_syslog(handle, LOG_ERR, "Failed to connect to system bus: %s", bus_error_message(&error));
+ r = sd_bus_open_system(&bus);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR,
+ "Failed to connect to system bus: %s", strerror(-r));
r = PAM_SESSION_ERR;
goto finish;
}
- m = dbus_message_new_method_call(
- "org.freedesktop.login1",
- "/org/freedesktop/login1",
- "org.freedesktop.login1.Manager",
- "ReleaseSession");
- if (!m) {
- pam_syslog(handle, LOG_ERR, "Could not allocate release session message.");
- r = PAM_BUF_ERR;
- goto finish;
- }
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, &id,
- DBUS_TYPE_INVALID)) {
- pam_syslog(handle, LOG_ERR, "Could not attach parameters to message.");
- r = PAM_BUF_ERR;
- goto finish;
- }
+ r = sd_bus_call_method(bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "ReleaseSession",
+ &error,
+ NULL,
+ "s",
+ id);
+ if (r < 0) {
+ pam_syslog(handle, LOG_ERR,
+ "Failed to release session: %s", strerror(-r));
+ if (error.name || error.message)
+ pam_syslog(handle, LOG_ERR, "systemd-logind returned %s: %s",
+ error.name ?: "unknown error",
+ error.message ?: "no message");
- reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
- if (!reply) {
- pam_syslog(handle, LOG_ERR, "Failed to release session: %s", bus_error_message(&error));
r = PAM_SESSION_ERR;
goto finish;
}
@@ -540,18 +499,5 @@ finish:
if (p)
close_nointr(PTR_TO_INT(p) - 1);
- dbus_error_free(&error);
-
- if (bus) {
- dbus_connection_close(bus);
- dbus_connection_unref(bus);
- }
-
- if (m)
- dbus_message_unref(m);
-
- if (reply)
- dbus_message_unref(reply);
-
return r;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 16:38:24 +0000