loginctl: convert to sd-bus

[elogind.git] / src / login / pam-module.c

diff --git a/src/login/pam-module.c b/src/login/pam-module.c
index 9362660bf906b2f56e1e7a300568fb7d4cc65b4b..f469244118cb64a76eff3d2b06546281870c2da4 100644 (file)
--- a/src/login/pam-module.c
+++ b/src/login/pam-module.c
@@ -178,19 +178,21 @@ _public_ PAM_EXTERN int pam_sm_open_session(
                 int flags,
                 int argc, const char **argv) {
 
-        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;
-        uint32_t uid, pid;
-        int session_fd = -1;
-        bool remote;
-        unsigned existing;
-        uint32_t vtnr = 0;
-        int r;
-
-        _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;
+        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;
+        _cleanup_bus_unref_ sd_bus *bus = NULL;
+        int session_fd = -1, existing, r;
+        uint32_t uid, pid, vtnr = 0;
+        bool debug = false, remote;
+        struct passwd *pw;
 
         assert(handle);
 
@@ -204,14 +206,14 @@ _public_ PAM_EXTERN int pam_sm_open_session(
         if (parse_argv(handle,
                        argc, argv,
                        &class_pam,
-                       &debug) < 0) {
-                r = PAM_SESSION_ERR;
-                goto finish;
-        }
+                       &debug) < 0)
+                return PAM_SESSION_ERR;
 
         r = get_user_data(handle, &username, &pw);
-        if (r != PAM_SUCCESS)
-                goto finish;
+        if (r != PAM_SUCCESS) {
+                pam_syslog(handle, LOG_ERR, "Failed to get user data.");
+                return r;
+        }
 
         /* Make sure we don't enter a loop by talking to
          * systemd-logind when it is actually waiting for the
@@ -318,7 +320,7 @@ _public_ PAM_EXTERN int pam_sm_open_session(
                 !streq(remote_host, "localhost") &&
                 !streq(remote_host, "localhost.localdomain");
 
-        /* Talk to logind over the message bug */
+        /* Talk to logind over the message bus */
 
         r = sd_bus_open_system(&bus);
         if (r < 0) {
@@ -372,8 +374,7 @@ _public_ PAM_EXTERN int pam_sm_open_session(
                                 &existing);
         if (r < 0) {
                 pam_syslog(handle, LOG_ERR, "Failed to parse message: %s", strerror(-r));
-                r = PAM_SESSION_ERR;
-                goto finish;
+                return PAM_SESSION_ERR;
         }
 
         if (debug)
@@ -384,56 +385,56 @@ _public_ PAM_EXTERN int pam_sm_open_session(
         r = pam_misc_setenv(handle, "XDG_SESSION_ID", id, 0);
         if (r != PAM_SUCCESS) {
                 pam_syslog(handle, LOG_ERR, "Failed to set session id.");
-                goto finish;
+                return r;
         }
 
         r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", runtime_path, 0);
         if (r != PAM_SUCCESS) {
                 pam_syslog(handle, LOG_ERR, "Failed to set runtime dir.");
-                goto finish;
+                return r;
         }
 
         if (!isempty(seat)) {
                 r = pam_misc_setenv(handle, "XDG_SEAT", seat, 0);
                 if (r != PAM_SUCCESS) {
                         pam_syslog(handle, LOG_ERR, "Failed to set seat.");
-                        goto finish;
+                        return r;
                 }
         }
 
         if (vtnr > 0) {
-                char buf[11];
+                char buf[DECIMAL_STR_MAX(vtnr)];
                 snprintf(buf, sizeof(buf), "%u", vtnr);
-                char_array_0(buf);
 
                 r = pam_misc_setenv(handle, "XDG_VTNR", buf, 0);
                 if (r != PAM_SUCCESS) {
                         pam_syslog(handle, LOG_ERR, "Failed to set virtual terminal number.");
-                        goto finish;
+                        return r;
                 }
         }
 
         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.");
-                goto finish;
+                return r;
         }
 
         if (session_fd >= 0) {
+                session_fd = dup(session_fd);
+                if (session_fd < 0) {
+                        pam_syslog(handle, LOG_ERR, "Failed to dup session fd: %m");
+                        return PAM_SESSION_ERR;
+                }
+
                 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.");
-                        goto finish;
+                        close_nointr_nofail(session_fd);
+                        return r;
                 }
         }
 
         return PAM_SUCCESS;
-
-finish:
-        if (session_fd >= 0)
-                close_nointr_nofail(session_fd);
-
-        return r;
 }
 
 _public_ PAM_EXTERN int pam_sm_close_session(
@@ -441,14 +442,13 @@ _public_ PAM_EXTERN int pam_sm_close_session(
                 int flags,
                 int argc, const char **argv) {
 
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        _cleanup_bus_unref_ sd_bus *bus = NULL;
         const void *p = NULL, *existing = NULL;
         const char *id;
         int r;
 
-        _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;
-
         assert(handle);
 
         /* Only release session if it wasn't pre-existing when we