move logind code to separate file

1 files changed, 196 insertions, 0 deletions

diff --git a/logind.c b/logind.c
new file mode 100644
index 0000000..b426609
--- /dev/null
+++ b/logind.c
@@ -0,0 +1,196 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <inttypes.h>
+#include <time.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <errno.h>
+#include <termios.h>
+
+#include <sys/stat.h>
+
+#include "config.h"
+#ifdef HAVE_SYSTEMD
+# include <systemd/sd-bus.h>
+#endif
+
+#include "logind.h"
+#include "kbd.h"
+
+#ifdef HAVE_SYSTEMD
+
+/* ---------------------------------------------------------------------- */
+
+static sd_bus *logind_dbus = NULL;
+
+int logind_init(void)
+{
+    int r;
+
+    r = sd_bus_open_system(&logind_dbus);
+    if (r < 0) {
+        fprintf(stderr, "Failed to connect to system bus: %s\n", strerror(-r));
+        return -1;
+    }
+
+    r = logind_take_control();
+    if (r < 0) {
+        sd_bus_unref(logind_dbus);
+        logind_dbus = NULL;
+        return -1;
+    }
+
+    fprintf(stderr, "Opening input devices via logind.\n");
+    return 0;
+}
+
+int logind_take_control(void)
+{
+    sd_bus_error error = SD_BUS_ERROR_NULL;
+    sd_bus_message *m = NULL;
+    int r;
+
+    r = sd_bus_call_method(logind_dbus,
+                           "org.freedesktop.login1",
+                           "/org/freedesktop/login1/session/self",
+                           "org.freedesktop.login1.Session",
+                           "TakeControl",
+                           &error,
+                           &m,
+                           "b",
+                           false);
+    if (r < 0) {
+        fprintf(stderr, "TakeControl failed: %s\n", error.message);
+        sd_bus_error_free(&error);
+    }
+    sd_bus_message_unref(m);
+
+    return r;
+}
+
+int logind_open(const char *path, int flags, void *user_data)
+{
+    sd_bus_error error = SD_BUS_ERROR_NULL;
+    sd_bus_message *m = NULL;
+    struct stat st;
+    unsigned int maj, min;
+    int inactive;
+    int handle, fd, r;
+
+    r = stat(path, &st);
+    if (r < 0) {
+        fprintf(stderr, "stat %s failed: %s\n", path, strerror(errno));
+        libinput_deverror++;
+        return -1;
+    }
+
+    maj = major(st.st_rdev);
+    min = minor(st.st_rdev);
+    r = sd_bus_call_method(logind_dbus,
+                           "org.freedesktop.login1",
+                           "/org/freedesktop/login1/session/self",
+                           "org.freedesktop.login1.Session",
+                           "TakeDevice",
+                           &error,
+                           &m,
+                           "uu",
+                           maj,
+                           min);
+    if (r < 0) {
+        fprintf(stderr, "TakeDevice failed: %s\n", error.message);
+        sd_bus_error_free(&error);
+        libinput_deverror++;
+        return -1;
+    }
+
+    handle = -1;
+    inactive = -1;
+    r = sd_bus_message_read(m, "hb", &handle, &inactive);
+    if (r < 0) {
+        fd = -1;
+        fprintf(stderr, "Parsing TakeDevice reply failed: %s\n", strerror(-r));
+        libinput_deverror++;
+    } else {
+        fd = fcntl(handle, F_DUPFD_CLOEXEC, 0);
+        fprintf(stderr, "open %s: got fd %d via logind.\n",
+                path, fd);
+        libinput_devcount++;
+    }
+    sd_bus_message_unref(m);
+
+    return fd;
+}
+
+void logind_close(int fd, void *user_data)
+{
+    sd_bus_error error = SD_BUS_ERROR_NULL;
+    sd_bus_message *m = NULL;
+    struct stat st;
+    unsigned int maj, min;
+    int r;
+
+    r = fstat(fd, &st);
+    if (r < 0) {
+        fprintf(stderr, "fstat failed: %s\n", strerror(errno));
+        return;
+    }
+    close(fd);
+
+    maj = major(st.st_rdev);
+    min = minor(st.st_rdev);
+    r = sd_bus_call_method(logind_dbus,
+                           "org.freedesktop.login1",
+                           "/org/freedesktop/login1/session/self",
+                           "org.freedesktop.login1.Session",
+                           "ReleaseDevice",
+                           &error,
+                           &m,
+                           "uu",
+                           maj,
+                           min);
+    if (r < 0) {
+        fprintf(stderr, "ReleaseDevice failed: %s\n", error.message);
+        sd_bus_error_free(&error);
+    }
+    sd_bus_message_unref(m);
+    libinput_devcount--;
+    return;
+}
+
+#else
+
+/* ---------------------------------------------------------------------- */
+
+int logind_init(void)
+{
+    fprintf(stderr, "warning: compiled without logind support.\n");
+    return -1;
+}
+
+int logind_take_control(void)
+{
+    return -1;
+}
+
+int logind_open(const char *path, int flags, void *user_data)
+{
+    fprintf(stderr, "error: compiled without logind support.\n");
+    libinput_deverror++;
+    errno = ENOSYS;
+    return -1;
+}
+
+void logind_close(int fd, void *user_data)
+{
+}
+
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+const struct libinput_interface libinput_if_logind = {
+    .open_restricted  = logind_open,
+    .close_restricted = logind_close,
+};