#include <sys/stat.h>
#include <pthread.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+
#include "main.h"
#include "utils.h"
#include "json.h"
+#include "window.h"
+#include "playlist.h"
#include <cx/map.h>
#include <cx/hash_map.h>
//include <ucx/properties.h>
#include <cx/buffer.h>
#include <cx/utils.h>
+#include <cx/printf.h>
#define CONFIG_BASE_DIR ".config"
#define UWP_CONFIG_DIR "uwplayer"
static char *uwp_config_dir;
+static int instance_socket = -1;
+
/*
* root json config object
*/
char* SettingsGetPlayerBin(void) {
return cxMapGet(uwp_settings, cx_hash_key_str(UWP_PLAYER_BIN));
}
+
+
+char *InstanceFilePath(Display *dp) {
+ cxmutstr instance_file = cx_asprintf("instance%s", DisplayString(dp));
+ char *path = util_concat_path(uwp_config_dir, instance_file.ptr);
+ free(instance_file.ptr);
+ return path;
+}
+
+int ConnectToInstance(const char *path) {
+ int fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if(!fd) {
+ return -1;
+ }
+
+ size_t path_len = strlen(path);
+
+ struct sockaddr_un addr;
+ if(path_len > sizeof(addr.sun_path)-1) {
+ return -1;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ memcpy(addr.sun_path, path, strlen(path) + 1);
+
+ if(connect(fd, (struct sockaddr*)&addr, sizeof(addr))) {
+ close(fd);
+ return -1;
+ }
+
+ return fd;
+}
+
+int CreateSingleInstanceSocket(Display *dp, Bool *already_running) {
+ char *instance_path = InstanceFilePath(dp);
+ size_t instance_path_len = strlen(instance_path);
+ *already_running = 0;
+
+ // check path
+ struct sockaddr_un addr;
+ if(instance_path_len > sizeof(addr.sun_path)-1) {
+ fprintf(stderr, "instance path '%s' too long for unix domain socket", instance_path);
+ free(instance_path);
+ return 1;
+ }
+
+ // check if the socket already exists and is open
+ struct stat s;
+ if(!stat(instance_path, &s)) {
+ int fd = ConnectToInstance(instance_path);
+ close(fd);
+ if(fd >= 0) {
+ *already_running = 1;
+ return 0; // instance already running
+ }
+
+ // instance not running but socket file exists
+ // remove socket before creating a new socket
+ unlink(instance_path);
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ memcpy(addr.sun_path, instance_path, instance_path_len+1);
+
+ free(instance_path);
+ instance_socket = socket(AF_UNIX, SOCK_STREAM, 0);
+ if(instance_socket < 0) {
+ fprintf(stderr, "cannot create instance socket: %s", strerror(errno));
+ return 1;
+ }
+
+ if(bind(instance_socket, (struct sockaddr*)&addr, sizeof(addr))) {
+ fprintf(stderr, "cannot bind instance socket: %s", strerror(errno));
+ return 1;
+ }
+
+ pthread_t tid;
+ if(pthread_create(&tid, NULL, instance_socket_thread, NULL)) {
+ close(instance_socket);
+ instance_socket = -1;
+ return -1;
+ }
+ pthread_detach(tid);
+
+ return 0;
+}
+
+static Boolean cmd_open(XtPointer data) {
+ MainWindow *win = GetMainWindow();
+ char *file = data;
+ printf("open %s\n", file);
+
+ PlayListClear(win);
+ PlayListAddFile(win, file);
+ PlayListPlayTrack(win, win->playlist.tracks->size-1);
+
+ free(data);
+ return 0;
+}
+
+static void process_msg(CxBuffer *msgbuf, size_t *rpos) {
+ cxstring msg = cx_strn(NULL, 0);
+ for(size_t i=*rpos;i<msgbuf->size;i++) {
+ if(msgbuf->space[i] == '\n') {
+ msg.ptr = msgbuf->space + *rpos;
+ msg.length = i - *rpos;
+ *rpos = i+1;
+ break;
+ }
+ }
+
+ if(msg.length > 0) {
+ if(cx_strprefix(msg, CX_STR("open "))) {
+ cxstring file = cx_strsubs(msg, 5);
+ cxmutstr mfile = cx_strdup(file);
+ AppExecProc(cmd_open, mfile.ptr);
+ } else {
+ fprintf(stderr, "unknown instance command: {%.*s}\n", (int)msg.length, msg.ptr);
+ }
+
+ if(*rpos < msgbuf->size) {
+ process_msg(msgbuf, rpos);
+ }
+ }
+}
+
+void* instance_socket_thread(void *data) {
+ listen(instance_socket, 8);
+
+ CxBuffer msgbuf;
+ cxBufferInit(&msgbuf, NULL, 1024, cxDefaultAllocator, CX_BUFFER_AUTO_EXTEND|CX_BUFFER_FREE_CONTENTS);
+
+ char buf[1024];
+
+ while(TRUE) {
+ printf("accept instance socket\n");
+ int fd = accept(instance_socket, NULL, 0);
+ if(fd < 0) {
+ break;
+ }
+ printf("accept instance connection\n");
+
+ msgbuf.pos = 0;
+ msgbuf.size = 0;
+ size_t rpos = 0;
+
+ ssize_t r;
+ while((r = read(fd, buf, 1024)) > 0) {
+ cxBufferWrite(buf, 1, r, &msgbuf);
+ process_msg(&msgbuf, &rpos);
+ }
+
+ printf("close instance connection\n");
+ close(fd);
+ }
+
+ cxBufferDestroy(&msgbuf);
+
+ printf("instance socket shutdown\n");
+
+ return NULL;
+}
+
+void ShutdownInstanceSocket(Display *dp) {
+ if(instance_socket < 0) {
+ return;
+ }
+
+ shutdown(instance_socket, SHUT_RDWR);
+ close(instance_socket);
+ instance_socket = -1;
+
+ char *instance_path = InstanceFilePath(dp);
+ unlink(instance_path);
+ free(instance_path);
+}