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Correctly get session path

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The old way of getting the session path was to simply append the session id to
the path "/org/freedesktop/login1/session/". However this is not the correct
path for newer systems like Fedora 26.

Instead, get the session path directly from the session manager from the id via
a dbus call to GetSession().

fixes #35
This commit is contained in:
Tony Crisci 2017-07-28 13:41:17 -04:00
parent b1ec0dce3a
commit 5eeb067838
1 changed files with 36 additions and 11 deletions
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47
session/logind.c
View file

@ -124,6 +124,36 @@ static bool logind_change_vt(struct wlr_session *base, unsigned vt) {
return ret >= 0;
}
static bool find_sesion_path(struct logind_session *session) {
int ret;
sd_bus_message *msg = NULL;
sd_bus_error error = SD_BUS_ERROR_NULL;
ret = sd_bus_call_method(session->bus, "org.freedesktop.login1",
"/org/freedesktop/login1", "org.freedesktop.login1.Manager",
"GetSession", &error, &msg, "s", session->id);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to get session path: %s", strerror(-ret));
goto out;
}
const char *path;
ret = sd_bus_message_read(msg, "o", &path);
if (ret < 0) {
wlr_log(L_ERROR, "Could not parse session path: %s", strerror(-ret));
goto out;
}
session->path = strdup(path);
out:
sd_bus_error_free(&error);
sd_bus_message_unref(msg);
return ret >= 0;
}
static bool session_activate(struct logind_session *session) {
int ret;
sd_bus_message *msg = NULL;
@ -315,22 +345,17 @@ static struct wlr_session *logind_session_start(struct wl_display *disp) {
snprintf(session->base.seat, sizeof(session->base.seat), "%s", seat);
free(seat);
const char *fmt = "/org/freedesktop/login1/session/%s";
int len = snprintf(NULL, 0, fmt, session->id);
session->path = malloc(len + 1);
if (!session->path) {
goto error;
}
sprintf(session->path, fmt, session->id);
ret = sd_bus_default_system(&session->bus);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to open D-Bus connection: %s", strerror(-ret));
goto error;
}
if (!find_sesion_path(session)) {
sd_bus_unref(session->bus);
goto error;
}
if (!add_signal_matches(session)) {
goto error_bus;
}
@ -357,9 +382,9 @@ static struct wlr_session *logind_session_start(struct wl_display *disp) {
error_bus:
sd_bus_unref(session->bus);
free(session->path);
error:
free(session->path);
free(session->id);
return NULL;
}