mirror of
https://github.com/mintycube/dwm.git
synced 2024-10-18 14:05:51 +02:00
Adding IPC v1.5.5 patch
This commit is contained in:
bakkeby
parent
4379517c25
commit
95611ca0bd
60
patch/ipc.c
Normal file
60
patch/ipc.c
Normal file
@ -0,0 +1,60 @@
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static int epoll_fd;
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static int dpy_fd;
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static Monitor *lastselmon;
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int
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handlexevent(struct epoll_event *ev)
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{
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if (ev->events & EPOLLIN) {
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XEvent ev;
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while (running && XPending(dpy)) {
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XNextEvent(dpy, &ev);
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if (handler[ev.type]) {
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handler[ev.type](&ev); /* call handler */
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ipc_send_events(mons, &lastselmon, selmon);
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}
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}
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} else if (ev-> events & EPOLLHUP)
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return -1;
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return 0;
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}
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void
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setlayoutsafe(const Arg *arg)
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{
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const Layout *ltptr = (Layout *)arg->v;
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if (ltptr == 0)
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setlayout(arg);
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for (int i = 0; i < LENGTH(layouts); i++) {
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if (ltptr == &layouts[i])
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setlayout(arg);
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}
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}
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void
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setupepoll(void)
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{
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epoll_fd = epoll_create1(0);
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dpy_fd = ConnectionNumber(dpy);
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struct epoll_event dpy_event;
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// Initialize struct to 0
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memset(&dpy_event, 0, sizeof(dpy_event));
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DEBUG("Display socket is fd %d\n", dpy_fd);
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if (epoll_fd == -1)
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fputs("Failed to create epoll file descriptor", stderr);
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dpy_event.events = EPOLLIN;
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dpy_event.data.fd = dpy_fd;
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if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, dpy_fd, &dpy_event)) {
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fputs("Failed to add display file descriptor to epoll", stderr);
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close(epoll_fd);
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exit(1);
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}
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if (ipc_init(ipcsockpath, epoll_fd, ipccommands, LENGTH(ipccommands)) < 0)
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fputs("Failed to initialize IPC\n", stderr);
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}
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5
patch/ipc.h
Normal file
5
patch/ipc.h
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@ -0,0 +1,5 @@
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#include <sys/epoll.h>
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static int handlexevent(struct epoll_event *ev);
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static void setlayoutsafe(const Arg *arg);
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static void setupepoll(void);
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66
patch/ipc/IPCClient.c
Normal file
66
patch/ipc/IPCClient.c
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@ -0,0 +1,66 @@
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#include "IPCClient.h"
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#include <string.h>
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#include <sys/epoll.h>
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#include "util.h"
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IPCClient *
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ipc_client_new(int fd)
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{
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IPCClient *c = (IPCClient *)malloc(sizeof(IPCClient));
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if (c == NULL) return NULL;
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// Initialize struct
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memset(&c->event, 0, sizeof(struct epoll_event));
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c->buffer_size = 0;
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c->buffer = NULL;
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c->fd = fd;
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c->event.data.fd = fd;
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c->next = NULL;
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c->prev = NULL;
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c->subscriptions = 0;
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return c;
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}
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void
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ipc_list_add_client(IPCClientList *list, IPCClient *nc)
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{
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DEBUG("Adding client with fd %d to list\n", nc->fd);
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if (*list == NULL) {
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// List is empty, point list at first client
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*list = nc;
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} else {
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IPCClient *c;
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// Go to last client in list
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for (c = *list; c && c->next; c = c->next)
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;
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c->next = nc;
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nc->prev = c;
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}
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}
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void
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ipc_list_remove_client(IPCClientList *list, IPCClient *c)
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{
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IPCClient *cprev = c->prev;
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IPCClient *cnext = c->next;
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if (cprev != NULL) cprev->next = c->next;
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if (cnext != NULL) cnext->prev = c->prev;
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if (c == *list) *list = c->next;
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}
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IPCClient *
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ipc_list_get_client(IPCClientList list, int fd)
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{
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for (IPCClient *c = list; c; c = c->next) {
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if (c->fd == fd) return c;
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}
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return NULL;
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}
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61
patch/ipc/IPCClient.h
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61
patch/ipc/IPCClient.h
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@ -0,0 +1,61 @@
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#ifndef IPC_CLIENT_H_
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#define IPC_CLIENT_H_
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/epoll.h>
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typedef struct IPCClient IPCClient;
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/**
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* This structure contains the details of an IPC Client and pointers for a
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* linked list
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*/
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struct IPCClient {
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int fd;
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int subscriptions;
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char *buffer;
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uint32_t buffer_size;
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struct epoll_event event;
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IPCClient *next;
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IPCClient *prev;
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};
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typedef IPCClient *IPCClientList;
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/**
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* Allocate memory for new IPCClient with the specified file descriptor and
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* initialize struct.
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*
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* @param fd File descriptor of IPC client
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*
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* @return Address to allocated IPCClient struct
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*/
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IPCClient *ipc_client_new(int fd);
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/**
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* Add an IPC Client to the specified list
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*
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* @param list Address of the list to add the client to
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* @param nc Address of the IPCClient
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*/
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void ipc_list_add_client(IPCClientList *list, IPCClient *nc);
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/**
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* Remove an IPCClient from the specified list
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*
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* @param list Address of the list to remove the client from
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* @param c Address of the IPCClient
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*/
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void ipc_list_remove_client(IPCClientList *list, IPCClient *c);
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/**
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* Get an IPCClient from the specified IPCClient list
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*
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* @param list List to remove the client from
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* @param fd File descriptor of the IPCClient
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*/
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IPCClient *ipc_list_get_client(IPCClientList list, int fd);
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#endif // IPC_CLIENT_H_
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548
patch/ipc/dwm-msg.c
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548
patch/ipc/dwm-msg.c
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@ -0,0 +1,548 @@
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#include <ctype.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include <yajl/yajl_gen.h>
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#define IPC_MAGIC "DWM-IPC"
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// clang-format off
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#define IPC_MAGIC_ARR { 'D', 'W', 'M', '-', 'I', 'P', 'C' }
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// clang-format on
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#define IPC_MAGIC_LEN 7 // Not including null char
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#define IPC_EVENT_TAG_CHANGE "tag_change_event"
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#define IPC_EVENT_CLIENT_FOCUS_CHANGE "client_focus_change_event"
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#define IPC_EVENT_LAYOUT_CHANGE "layout_change_event"
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#define IPC_EVENT_MONITOR_FOCUS_CHANGE "monitor_focus_change_event"
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#define IPC_EVENT_FOCUSED_TITLE_CHANGE "focused_title_change_event"
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#define IPC_EVENT_FOCUSED_STATE_CHANGE "focused_state_change_event"
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#define YSTR(str) yajl_gen_string(gen, (unsigned char *)str, strlen(str))
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#define YINT(num) yajl_gen_integer(gen, num)
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#define YDOUBLE(num) yajl_gen_double(gen, num)
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#define YBOOL(v) yajl_gen_bool(gen, v)
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#define YNULL() yajl_gen_null(gen)
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#define YARR(body) \
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{ \
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yajl_gen_array_open(gen); \
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body; \
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yajl_gen_array_close(gen); \
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}
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#define YMAP(body) \
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{ \
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yajl_gen_map_open(gen); \
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body; \
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yajl_gen_map_close(gen); \
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}
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typedef unsigned long Window;
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const char *DEFAULT_SOCKET_PATH = "/tmp/dwm.sock";
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static int sock_fd = -1;
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static unsigned int ignore_reply = 0;
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typedef enum IPCMessageType {
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IPC_TYPE_RUN_COMMAND = 0,
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IPC_TYPE_GET_MONITORS = 1,
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IPC_TYPE_GET_TAGS = 2,
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IPC_TYPE_GET_LAYOUTS = 3,
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IPC_TYPE_GET_DWM_CLIENT = 4,
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IPC_TYPE_SUBSCRIBE = 5,
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IPC_TYPE_EVENT = 6
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} IPCMessageType;
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// Every IPC message must begin with this
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typedef struct dwm_ipc_header {
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uint8_t magic[IPC_MAGIC_LEN];
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uint32_t size;
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uint8_t type;
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} __attribute((packed)) dwm_ipc_header_t;
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static int
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recv_message(uint8_t *msg_type, uint32_t *reply_size, uint8_t **reply)
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{
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uint32_t read_bytes = 0;
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const int32_t to_read = sizeof(dwm_ipc_header_t);
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char header[to_read];
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char *walk = header;
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// Try to read header
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while (read_bytes < to_read) {
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ssize_t n = read(sock_fd, header + read_bytes, to_read - read_bytes);
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if (n == 0) {
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if (read_bytes == 0) {
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fprintf(stderr, "Unexpectedly reached EOF while reading header.");
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fprintf(stderr,
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"Read %" PRIu32 " bytes, expected %" PRIu32 " total bytes.\n",
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read_bytes, to_read);
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return -2;
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} else {
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fprintf(stderr, "Unexpectedly reached EOF while reading header.");
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fprintf(stderr,
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"Read %" PRIu32 " bytes, expected %" PRIu32 " total bytes.\n",
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read_bytes, to_read);
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return -3;
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}
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} else if (n == -1) {
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return -1;
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}
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read_bytes += n;
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}
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// Check if magic string in header matches
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if (memcmp(walk, IPC_MAGIC, IPC_MAGIC_LEN) != 0) {
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fprintf(stderr, "Invalid magic string. Got '%.*s', expected '%s'\n",
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IPC_MAGIC_LEN, walk, IPC_MAGIC);
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return -3;
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}
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walk += IPC_MAGIC_LEN;
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// Extract reply size
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memcpy(reply_size, walk, sizeof(uint32_t));
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walk += sizeof(uint32_t);
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// Extract message type
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memcpy(msg_type, walk, sizeof(uint8_t));
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walk += sizeof(uint8_t);
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(*reply) = malloc(*reply_size);
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// Extract payload
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read_bytes = 0;
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while (read_bytes < *reply_size) {
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ssize_t n = read(sock_fd, *reply + read_bytes, *reply_size - read_bytes);
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if (n == 0) {
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fprintf(stderr, "Unexpectedly reached EOF while reading payload.");
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fprintf(stderr, "Read %" PRIu32 " bytes, expected %" PRIu32 " bytes.\n",
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read_bytes, *reply_size);
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free(*reply);
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return -2;
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} else if (n == -1) {
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if (errno == EINTR || errno == EAGAIN) continue;
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free(*reply);
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return -1;
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}
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read_bytes += n;
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}
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return 0;
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}
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static int
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read_socket(IPCMessageType *msg_type, uint32_t *msg_size, char **msg)
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{
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int ret = -1;
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while (ret != 0) {
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ret = recv_message((uint8_t *)msg_type, msg_size, (uint8_t **)msg);
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if (ret < 0) {
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// Try again (non-fatal error)
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if (ret == -1 && (errno == EINTR || errno == EAGAIN)) continue;
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fprintf(stderr, "Error receiving response from socket. ");
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fprintf(stderr, "The connection might have been lost.\n");
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exit(2);
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}
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}
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return 0;
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}
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static ssize_t
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write_socket(const void *buf, size_t count)
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{
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size_t written = 0;
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while (written < count) {
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const ssize_t n =
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write(sock_fd, ((uint8_t *)buf) + written, count - written);
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if (n == -1) {
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if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)
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continue;
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else
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return n;
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}
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written += n;
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}
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return written;
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}
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static void
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connect_to_socket()
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{
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struct sockaddr_un addr;
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int sock = socket(AF_UNIX, SOCK_STREAM, 0);
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// Initialize struct to 0
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memset(&addr, 0, sizeof(struct sockaddr_un));
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addr.sun_family = AF_UNIX;
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strcpy(addr.sun_path, DEFAULT_SOCKET_PATH);
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connect(sock, (const struct sockaddr *)&addr, sizeof(struct sockaddr_un));
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sock_fd = sock;
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}
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static int
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send_message(IPCMessageType msg_type, uint32_t msg_size, uint8_t *msg)
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{
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dwm_ipc_header_t header = {
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.magic = IPC_MAGIC_ARR, .size = msg_size, .type = msg_type};
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size_t header_size = sizeof(dwm_ipc_header_t);
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size_t total_size = header_size + msg_size;
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uint8_t buffer[total_size];
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// Copy header to buffer
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memcpy(buffer, &header, header_size);
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// Copy message to buffer
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memcpy(buffer + header_size, msg, header.size);
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write_socket(buffer, total_size);
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return 0;
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}
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static int
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is_float(const char *s)
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{
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size_t len = strlen(s);
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int is_dot_used = 0;
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int is_minus_used = 0;
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// Floats can only have one decimal point in between or digits
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// Optionally, floats can also be below zero (negative)
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for (int i = 0; i < len; i++) {
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if (isdigit(s[i]))
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continue;
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else if (!is_dot_used && s[i] == '.' && i != 0 && i != len - 1) {
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is_dot_used = 1;
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continue;
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} else if (!is_minus_used && s[i] == '-' && i == 0) {
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is_minus_used = 1;
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continue;
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} else
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return 0;
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}
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return 1;
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}
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static int
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is_unsigned_int(const char *s)
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{
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size_t len = strlen(s);
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// Unsigned int can only have digits
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for (int i = 0; i < len; i++) {
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if (isdigit(s[i]))
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continue;
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else
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return 0;
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}
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return 1;
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}
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static int
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is_signed_int(const char *s)
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{
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size_t len = strlen(s);
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// Signed int can only have digits and a negative sign at the start
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for (int i = 0; i < len; i++) {
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if (isdigit(s[i]))
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continue;
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else if (i == 0 && s[i] == '-') {
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continue;
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} else
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return 0;
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}
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return 1;
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}
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static void
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flush_socket_reply()
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{
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IPCMessageType reply_type;
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uint32_t reply_size;
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char *reply;
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read_socket(&reply_type, &reply_size, &reply);
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free(reply);
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}
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static void
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print_socket_reply()
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{
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IPCMessageType reply_type;
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uint32_t reply_size;
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char *reply;
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read_socket(&reply_type, &reply_size, &reply);
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printf("%.*s\n", reply_size, reply);
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fflush(stdout);
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free(reply);
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}
|
||||
|
||||
static int
|
||||
run_command(const char *name, char *args[], int argc)
|
||||
{
|
||||
const unsigned char *msg;
|
||||
size_t msg_size;
|
||||
|
||||
yajl_gen gen = yajl_gen_alloc(NULL);
|
||||
|
||||
// Message format:
|
||||
// {
|
||||
// "command": "<name>",
|
||||
// "args": [ ... ]
|
||||
// }
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("command"); YSTR(name);
|
||||
YSTR("args"); YARR(
|
||||
for (int i = 0; i < argc; i++) {
|
||||
if (is_signed_int(args[i])) {
|
||||
long long num = atoll(args[i]);
|
||||
YINT(num);
|
||||
} else if (is_float(args[i])) {
|
||||
float num = atof(args[i]);
|
||||
YDOUBLE(num);
|
||||
} else {
|
||||
YSTR(args[i]);
|
||||
}
|
||||
}
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
yajl_gen_get_buf(gen, &msg, &msg_size);
|
||||
|
||||
send_message(IPC_TYPE_RUN_COMMAND, msg_size, (uint8_t *)msg);
|
||||
|
||||
if (!ignore_reply)
|
||||
print_socket_reply();
|
||||
else
|
||||
flush_socket_reply();
|
||||
|
||||
yajl_gen_free(gen);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
get_monitors()
|
||||
{
|
||||
send_message(IPC_TYPE_GET_MONITORS, 1, (uint8_t *)"");
|
||||
print_socket_reply();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
get_tags()
|
||||
{
|
||||
send_message(IPC_TYPE_GET_TAGS, 1, (uint8_t *)"");
|
||||
print_socket_reply();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
get_layouts()
|
||||
{
|
||||
send_message(IPC_TYPE_GET_LAYOUTS, 1, (uint8_t *)"");
|
||||
print_socket_reply();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
get_dwm_client(Window win)
|
||||
{
|
||||
const unsigned char *msg;
|
||||
size_t msg_size;
|
||||
|
||||
yajl_gen gen = yajl_gen_alloc(NULL);
|
||||
|
||||
// Message format:
|
||||
// {
|
||||
// "client_window_id": "<win>"
|
||||
// }
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("client_window_id"); YINT(win);
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
yajl_gen_get_buf(gen, &msg, &msg_size);
|
||||
|
||||
send_message(IPC_TYPE_GET_DWM_CLIENT, msg_size, (uint8_t *)msg);
|
||||
|
||||
print_socket_reply();
|
||||
|
||||
yajl_gen_free(gen);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
subscribe(const char *event)
|
||||
{
|
||||
const unsigned char *msg;
|
||||
size_t msg_size;
|
||||
|
||||
yajl_gen gen = yajl_gen_alloc(NULL);
|
||||
|
||||
// Message format:
|
||||
// {
|
||||
// "event": "<event>",
|
||||
// "action": "subscribe"
|
||||
// }
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("event"); YSTR(event);
|
||||
YSTR("action"); YSTR("subscribe");
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
yajl_gen_get_buf(gen, &msg, &msg_size);
|
||||
|
||||
send_message(IPC_TYPE_SUBSCRIBE, msg_size, (uint8_t *)msg);
|
||||
|
||||
if (!ignore_reply)
|
||||
print_socket_reply();
|
||||
else
|
||||
flush_socket_reply();
|
||||
|
||||
yajl_gen_free(gen);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
usage_error(const char *prog_name, const char *format, ...)
|
||||
{
|
||||
va_list args;
|
||||
va_start(args, format);
|
||||
|
||||
fprintf(stderr, "Error: ");
|
||||
vfprintf(stderr, format, args);
|
||||
fprintf(stderr, "\nusage: %s <command> [...]\n", prog_name);
|
||||
fprintf(stderr, "Try '%s help'\n", prog_name);
|
||||
|
||||
va_end(args);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
static void
|
||||
print_usage(const char *name)
|
||||
{
|
||||
printf("usage: %s [options] <command> [...]\n", name);
|
||||
puts("");
|
||||
puts("Commands:");
|
||||
puts(" run_command <name> [args...] Run an IPC command");
|
||||
puts("");
|
||||
puts(" get_monitors Get monitor properties");
|
||||
puts("");
|
||||
puts(" get_tags Get list of tags");
|
||||
puts("");
|
||||
puts(" get_layouts Get list of layouts");
|
||||
puts("");
|
||||
puts(" get_dwm_client <window_id> Get dwm client proprties");
|
||||
puts("");
|
||||
puts(" subscribe [events...] Subscribe to specified events");
|
||||
puts(" Options: " IPC_EVENT_TAG_CHANGE ",");
|
||||
puts(" " IPC_EVENT_LAYOUT_CHANGE ",");
|
||||
puts(" " IPC_EVENT_CLIENT_FOCUS_CHANGE ",");
|
||||
puts(" " IPC_EVENT_MONITOR_FOCUS_CHANGE ",");
|
||||
puts(" " IPC_EVENT_FOCUSED_TITLE_CHANGE ",");
|
||||
puts(" " IPC_EVENT_FOCUSED_STATE_CHANGE);
|
||||
puts("");
|
||||
puts(" help Display this message");
|
||||
puts("");
|
||||
puts("Options:");
|
||||
puts(" --ignore-reply Don't print reply messages from");
|
||||
puts(" run_command and subscribe.");
|
||||
puts("");
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
const char *prog_name = argv[0];
|
||||
|
||||
connect_to_socket();
|
||||
if (sock_fd == -1) {
|
||||
fprintf(stderr, "Failed to connect to socket\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
int i = 1;
|
||||
if (strcmp(argv[i], "--ignore-reply") == 0) {
|
||||
ignore_reply = 1;
|
||||
i++;
|
||||
}
|
||||
|
||||
// if (i >= argc) usage_error(prog_name, "Expected an argument, got none");
|
||||
|
||||
if (!argc || strcmp(argv[i], "help") == 0)
|
||||
print_usage(prog_name);
|
||||
else if (strcmp(argv[i], "run_command") == 0) {
|
||||
if (++i >= argc) usage_error(prog_name, "No command specified");
|
||||
// Command name
|
||||
char *command = argv[i];
|
||||
// Command arguments are everything after command name
|
||||
char **command_args = argv + ++i;
|
||||
// Number of command arguments
|
||||
int command_argc = argc - i;
|
||||
run_command(command, command_args, command_argc);
|
||||
} else if (strcmp(argv[i], "get_monitors") == 0) {
|
||||
get_monitors();
|
||||
} else if (strcmp(argv[i], "get_tags") == 0) {
|
||||
get_tags();
|
||||
} else if (strcmp(argv[i], "get_layouts") == 0) {
|
||||
get_layouts();
|
||||
} else if (strcmp(argv[i], "get_dwm_client") == 0) {
|
||||
if (++i < argc) {
|
||||
if (is_unsigned_int(argv[i])) {
|
||||
Window win = atol(argv[i]);
|
||||
get_dwm_client(win);
|
||||
} else
|
||||
usage_error(prog_name, "Expected unsigned integer argument");
|
||||
} else
|
||||
usage_error(prog_name, "Expected the window id");
|
||||
} else if (strcmp(argv[i], "subscribe") == 0) {
|
||||
if (++i < argc) {
|
||||
for (int j = i; j < argc; j++) subscribe(argv[j]);
|
||||
} else
|
||||
usage_error(prog_name, "Expected event name");
|
||||
// Keep listening for events forever
|
||||
while (1) {
|
||||
print_socket_reply();
|
||||
}
|
||||
} else
|
||||
usage_error(prog_name, "Invalid argument '%s'", argv[i]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
1201
patch/ipc/ipc.c
Normal file
1201
patch/ipc/ipc.c
Normal file
@ -0,0 +1,1201 @@
|
||||
#include "ipc.h"
|
||||
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <inttypes.h>
|
||||
#include <stdarg.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys/epoll.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/un.h>
|
||||
#include <unistd.h>
|
||||
#include <yajl/yajl_gen.h>
|
||||
#include <yajl/yajl_tree.h>
|
||||
|
||||
#include "util.h"
|
||||
#include "yajl_dumps.h"
|
||||
|
||||
static struct sockaddr_un sockaddr;
|
||||
static struct epoll_event sock_epoll_event;
|
||||
static IPCClientList ipc_clients = NULL;
|
||||
static int epoll_fd = -1;
|
||||
static int sock_fd = -1;
|
||||
static IPCCommand *ipc_commands;
|
||||
static unsigned int ipc_commands_len;
|
||||
// Max size is 1 MB
|
||||
static const uint32_t MAX_MESSAGE_SIZE = 1000000;
|
||||
static const int IPC_SOCKET_BACKLOG = 5;
|
||||
|
||||
/**
|
||||
* Create IPC socket at specified path and return file descriptor to socket.
|
||||
* This initializes the static variable sockaddr.
|
||||
*/
|
||||
static int
|
||||
ipc_create_socket(const char *filename)
|
||||
{
|
||||
char *normal_filename;
|
||||
char *parent;
|
||||
const size_t addr_size = sizeof(struct sockaddr_un);
|
||||
const int sock_type = SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC;
|
||||
|
||||
normalizepath(filename, &normal_filename);
|
||||
|
||||
// In case socket file exists
|
||||
unlink(normal_filename);
|
||||
|
||||
// For portability clear the addr structure, since some implementations have
|
||||
// nonstandard fields in the structure
|
||||
memset(&sockaddr, 0, addr_size);
|
||||
|
||||
parentdir(normal_filename, &parent);
|
||||
// Create parent directories
|
||||
mkdirp(parent);
|
||||
free(parent);
|
||||
|
||||
sockaddr.sun_family = AF_LOCAL;
|
||||
strcpy(sockaddr.sun_path, normal_filename);
|
||||
free(normal_filename);
|
||||
|
||||
sock_fd = socket(AF_LOCAL, sock_type, 0);
|
||||
if (sock_fd == -1) {
|
||||
fputs("Failed to create socket\n", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
DEBUG("Created socket at %s\n", sockaddr.sun_path);
|
||||
|
||||
if (bind(sock_fd, (const struct sockaddr *)&sockaddr, addr_size) == -1) {
|
||||
fputs("Failed to bind socket\n", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
DEBUG("Socket binded\n");
|
||||
|
||||
if (listen(sock_fd, IPC_SOCKET_BACKLOG) < 0) {
|
||||
fputs("Failed to listen for connections on socket\n", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
DEBUG("Now listening for connections on socket\n");
|
||||
|
||||
return sock_fd;
|
||||
}
|
||||
|
||||
/**
|
||||
* Internal function used to receive IPC messages from a given file descriptor.
|
||||
*
|
||||
* Returns -1 on error reading (could be EAGAIN or EINTR)
|
||||
* Returns -2 if EOF before header could be read
|
||||
* Returns -3 if invalid IPC header
|
||||
* Returns -4 if message length exceeds MAX_MESSAGE_SIZE
|
||||
*/
|
||||
static int
|
||||
ipc_recv_message(int fd, uint8_t *msg_type, uint32_t *reply_size,
|
||||
uint8_t **reply)
|
||||
{
|
||||
uint32_t read_bytes = 0;
|
||||
const int32_t to_read = sizeof(dwm_ipc_header_t);
|
||||
char header[to_read];
|
||||
char *walk = header;
|
||||
|
||||
// Try to read header
|
||||
while (read_bytes < to_read) {
|
||||
const ssize_t n = read(fd, header + read_bytes, to_read - read_bytes);
|
||||
|
||||
if (n == 0) {
|
||||
if (read_bytes == 0) {
|
||||
fprintf(stderr, "Unexpectedly reached EOF while reading header.");
|
||||
fprintf(stderr,
|
||||
"Read %" PRIu32 " bytes, expected %" PRIu32 " total bytes.\n",
|
||||
read_bytes, to_read);
|
||||
return -2;
|
||||
} else {
|
||||
fprintf(stderr, "Unexpectedly reached EOF while reading header.");
|
||||
fprintf(stderr,
|
||||
"Read %" PRIu32 " bytes, expected %" PRIu32 " total bytes.\n",
|
||||
read_bytes, to_read);
|
||||
return -3;
|
||||
}
|
||||
} else if (n == -1) {
|
||||
// errno will still be set
|
||||
return -1;
|
||||
}
|
||||
|
||||
read_bytes += n;
|
||||
}
|
||||
|
||||
// Check if magic string in header matches
|
||||
if (memcmp(walk, IPC_MAGIC, IPC_MAGIC_LEN) != 0) {
|
||||
fprintf(stderr, "Invalid magic string. Got '%.*s', expected '%s'\n",
|
||||
IPC_MAGIC_LEN, walk, IPC_MAGIC);
|
||||
return -3;
|
||||
}
|
||||
|
||||
walk += IPC_MAGIC_LEN;
|
||||
|
||||
// Extract reply size
|
||||
memcpy(reply_size, walk, sizeof(uint32_t));
|
||||
walk += sizeof(uint32_t);
|
||||
|
||||
if (*reply_size > MAX_MESSAGE_SIZE) {
|
||||
fprintf(stderr, "Message too long: %" PRIu32 " bytes. ", *reply_size);
|
||||
fprintf(stderr, "Maximum message size is: %d\n", MAX_MESSAGE_SIZE);
|
||||
return -4;
|
||||
}
|
||||
|
||||
// Extract message type
|
||||
memcpy(msg_type, walk, sizeof(uint8_t));
|
||||
walk += sizeof(uint8_t);
|
||||
|
||||
if (*reply_size > 0)
|
||||
(*reply) = malloc(*reply_size);
|
||||
else
|
||||
return 0;
|
||||
|
||||
read_bytes = 0;
|
||||
while (read_bytes < *reply_size) {
|
||||
const ssize_t n = read(fd, *reply + read_bytes, *reply_size - read_bytes);
|
||||
|
||||
if (n == 0) {
|
||||
fprintf(stderr, "Unexpectedly reached EOF while reading payload.");
|
||||
fprintf(stderr, "Read %" PRIu32 " bytes, expected %" PRIu32 " bytes.\n",
|
||||
read_bytes, *reply_size);
|
||||
free(*reply);
|
||||
return -2;
|
||||
} else if (n == -1) {
|
||||
// TODO: Should we return and wait for another epoll event?
|
||||
// This would require saving the partial read in some way.
|
||||
if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK) continue;
|
||||
|
||||
free(*reply);
|
||||
return -1;
|
||||
}
|
||||
|
||||
read_bytes += n;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Internal function used to write a buffer to a file descriptor
|
||||
*
|
||||
* Returns number of bytes written if successful write
|
||||
* Returns 0 if no bytes were written due to EAGAIN or EWOULDBLOCK
|
||||
* Returns -1 on unknown error trying to write, errno will carry over from
|
||||
* write() call
|
||||
*/
|
||||
static ssize_t
|
||||
ipc_write_message(int fd, const void *buf, size_t count)
|
||||
{
|
||||
size_t written = 0;
|
||||
|
||||
while (written < count) {
|
||||
const ssize_t n = write(fd, (uint8_t *)buf + written, count - written);
|
||||
|
||||
if (n == -1) {
|
||||
if (errno == EAGAIN || errno == EWOULDBLOCK)
|
||||
return written;
|
||||
else if (errno == EINTR)
|
||||
continue;
|
||||
else
|
||||
return n;
|
||||
}
|
||||
|
||||
written += n;
|
||||
DEBUG("Wrote %zu/%zu to client at fd %d\n", written, count, fd);
|
||||
}
|
||||
|
||||
return written;
|
||||
}
|
||||
|
||||
/**
|
||||
* Initialization for generic event message. This is used to allocate the yajl
|
||||
* handle, set yajl options, and in the future any other initialization that
|
||||
* should occur for event messages.
|
||||
*/
|
||||
static void
|
||||
ipc_event_init_message(yajl_gen *gen)
|
||||
{
|
||||
*gen = yajl_gen_alloc(NULL);
|
||||
yajl_gen_config(*gen, yajl_gen_beautify, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepares buffers of IPC subscribers of specified event using buffer from yajl
|
||||
* handle.
|
||||
*/
|
||||
static void
|
||||
ipc_event_prepare_send_message(yajl_gen gen, IPCEvent event)
|
||||
{
|
||||
const unsigned char *buffer;
|
||||
size_t len = 0;
|
||||
|
||||
yajl_gen_get_buf(gen, &buffer, &len);
|
||||
len++; // For null char
|
||||
|
||||
for (IPCClient *c = ipc_clients; c; c = c->next) {
|
||||
if (c->subscriptions & event) {
|
||||
DEBUG("Sending selected client change event to fd %d\n", c->fd);
|
||||
ipc_prepare_send_message(c, IPC_TYPE_EVENT, len, (char *)buffer);
|
||||
}
|
||||
}
|
||||
|
||||
// Not documented, but this frees temp_buffer
|
||||
yajl_gen_free(gen);
|
||||
}
|
||||
|
||||
/**
|
||||
* Initialization for generic reply message. This is used to allocate the yajl
|
||||
* handle, set yajl options, and in the future any other initialization that
|
||||
* should occur for reply messages.
|
||||
*/
|
||||
static void
|
||||
ipc_reply_init_message(yajl_gen *gen)
|
||||
{
|
||||
*gen = yajl_gen_alloc(NULL);
|
||||
yajl_gen_config(*gen, yajl_gen_beautify, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepares the IPC client's buffer with a message using the buffer of the yajl
|
||||
* handle.
|
||||
*/
|
||||
static void
|
||||
ipc_reply_prepare_send_message(yajl_gen gen, IPCClient *c,
|
||||
IPCMessageType msg_type)
|
||||
{
|
||||
const unsigned char *buffer;
|
||||
size_t len = 0;
|
||||
|
||||
yajl_gen_get_buf(gen, &buffer, &len);
|
||||
len++; // For null char
|
||||
|
||||
ipc_prepare_send_message(c, msg_type, len, (const char *)buffer);
|
||||
|
||||
// Not documented, but this frees temp_buffer
|
||||
yajl_gen_free(gen);
|
||||
}
|
||||
|
||||
/**
|
||||
* Find the IPCCommand with the specified name
|
||||
*
|
||||
* Returns 0 if a command with the specified name was found
|
||||
* Returns -1 if a command with the specified name could not be found
|
||||
*/
|
||||
static int
|
||||
ipc_get_ipc_command(const char *name, IPCCommand *ipc_command)
|
||||
{
|
||||
for (int i = 0; i < ipc_commands_len; i++) {
|
||||
if (strcmp(ipc_commands[i].name, name) == 0) {
|
||||
*ipc_command = ipc_commands[i];
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse a IPC_TYPE_RUN_COMMAND message from a client. This function extracts
|
||||
* the arguments, argument count, argument types, and command name and returns
|
||||
* the parsed information as an IPCParsedCommand. If this function returns
|
||||
* successfully, the parsed_command must be freed using
|
||||
* ipc_free_parsed_command_members.
|
||||
*
|
||||
* Returns 0 if the message was successfully parsed
|
||||
* Returns -1 otherwise
|
||||
*/
|
||||
static int
|
||||
ipc_parse_run_command(char *msg, IPCParsedCommand *parsed_command)
|
||||
{
|
||||
char error_buffer[1000];
|
||||
yajl_val parent = yajl_tree_parse(msg, error_buffer, 1000);
|
||||
|
||||
if (parent == NULL) {
|
||||
fputs("Failed to parse command from client\n", stderr);
|
||||
fprintf(stderr, "%s\n", error_buffer);
|
||||
fprintf(stderr, "Tried to parse: %s\n", msg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Format:
|
||||
// {
|
||||
// "command": "<command name>"
|
||||
// "args": [ "arg1", "arg2", ... ]
|
||||
// }
|
||||
const char *command_path[] = {"command", 0};
|
||||
yajl_val command_val = yajl_tree_get(parent, command_path, yajl_t_string);
|
||||
|
||||
if (command_val == NULL) {
|
||||
fputs("No command key found in client message\n", stderr);
|
||||
yajl_tree_free(parent);
|
||||
return -1;
|
||||
}
|
||||
|
||||
const char *command_name = YAJL_GET_STRING(command_val);
|
||||
size_t command_name_len = strlen(command_name);
|
||||
parsed_command->name = (char *)malloc((command_name_len + 1) * sizeof(char));
|
||||
strcpy(parsed_command->name, command_name);
|
||||
|
||||
DEBUG("Received command: %s\n", parsed_command->name);
|
||||
|
||||
const char *args_path[] = {"args", 0};
|
||||
yajl_val args_val = yajl_tree_get(parent, args_path, yajl_t_array);
|
||||
|
||||
if (args_val == NULL) {
|
||||
fputs("No args key found in client message\n", stderr);
|
||||
yajl_tree_free(parent);
|
||||
return -1;
|
||||
}
|
||||
|
||||
unsigned int *argc = &parsed_command->argc;
|
||||
Arg **args = &parsed_command->args;
|
||||
ArgType **arg_types = &parsed_command->arg_types;
|
||||
|
||||
*argc = args_val->u.array.len;
|
||||
|
||||
// If no arguments are specified, make a dummy argument to pass to the
|
||||
// function. This is just the way dwm's void(Arg*) functions are setup.
|
||||
if (*argc == 0) {
|
||||
*args = (Arg *)malloc(sizeof(Arg));
|
||||
*arg_types = (ArgType *)malloc(sizeof(ArgType));
|
||||
(*arg_types)[0] = ARG_TYPE_NONE;
|
||||
(*args)[0].f = 0;
|
||||
(*argc)++;
|
||||
} else if (*argc > 0) {
|
||||
*args = (Arg *)calloc(*argc, sizeof(Arg));
|
||||
*arg_types = (ArgType *)malloc(*argc * sizeof(ArgType));
|
||||
|
||||
for (int i = 0; i < *argc; i++) {
|
||||
yajl_val arg_val = args_val->u.array.values[i];
|
||||
|
||||
if (YAJL_IS_NUMBER(arg_val)) {
|
||||
if (YAJL_IS_INTEGER(arg_val)) {
|
||||
// Any values below 0 must be a signed int
|
||||
if (YAJL_GET_INTEGER(arg_val) < 0) {
|
||||
(*args)[i].i = YAJL_GET_INTEGER(arg_val);
|
||||
(*arg_types)[i] = ARG_TYPE_SINT;
|
||||
DEBUG("i=%ld\n", (*args)[i].i);
|
||||
// Any values above 0 should be an unsigned int
|
||||
} else if (YAJL_GET_INTEGER(arg_val) >= 0) {
|
||||
(*args)[i].ui = YAJL_GET_INTEGER(arg_val);
|
||||
(*arg_types)[i] = ARG_TYPE_UINT;
|
||||
DEBUG("ui=%ld\n", (*args)[i].i);
|
||||
}
|
||||
// If the number is not an integer, it must be a float
|
||||
} else {
|
||||
(*args)[i].f = (float)YAJL_GET_DOUBLE(arg_val);
|
||||
(*arg_types)[i] = ARG_TYPE_FLOAT;
|
||||
DEBUG("f=%f\n", (*args)[i].f);
|
||||
// If argument is not a number, it must be a string
|
||||
}
|
||||
} else if (YAJL_IS_STRING(arg_val)) {
|
||||
char *arg_s = YAJL_GET_STRING(arg_val);
|
||||
size_t arg_s_size = (strlen(arg_s) + 1) * sizeof(char);
|
||||
(*args)[i].v = (char *)malloc(arg_s_size);
|
||||
(*arg_types)[i] = ARG_TYPE_STR;
|
||||
strcpy((char *)(*args)[i].v, arg_s);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
yajl_tree_free(parent);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Free the members of a IPCParsedCommand struct
|
||||
*/
|
||||
static void
|
||||
ipc_free_parsed_command_members(IPCParsedCommand *command)
|
||||
{
|
||||
for (int i = 0; i < command->argc; i++) {
|
||||
if (command->arg_types[i] == ARG_TYPE_STR) free((void *)command->args[i].v);
|
||||
}
|
||||
free(command->args);
|
||||
free(command->arg_types);
|
||||
free(command->name);
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if the given arguments are the correct length and type. Also do any
|
||||
* casting to correct the types.
|
||||
*
|
||||
* Returns 0 if the arguments were the correct length and types
|
||||
* Returns -1 if the argument count doesn't match
|
||||
* Returns -2 if the argument types don't match
|
||||
*/
|
||||
static int
|
||||
ipc_validate_run_command(IPCParsedCommand *parsed, const IPCCommand actual)
|
||||
{
|
||||
if (actual.argc != parsed->argc) return -1;
|
||||
|
||||
for (int i = 0; i < parsed->argc; i++) {
|
||||
ArgType ptype = parsed->arg_types[i];
|
||||
ArgType atype = actual.arg_types[i];
|
||||
|
||||
if (ptype != atype) {
|
||||
if (ptype == ARG_TYPE_UINT && atype == ARG_TYPE_PTR)
|
||||
// If this argument is supposed to be a void pointer, cast it
|
||||
parsed->args[i].v = (void *)parsed->args[i].ui;
|
||||
else if (ptype == ARG_TYPE_UINT && atype == ARG_TYPE_SINT)
|
||||
// If this argument is supposed to be a signed int, cast it
|
||||
parsed->args[i].i = parsed->args[i].ui;
|
||||
else
|
||||
return -2;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert event name to their IPCEvent equivalent enum value
|
||||
*
|
||||
* Returns 0 if a valid event name was given
|
||||
* Returns -1 otherwise
|
||||
*/
|
||||
static int
|
||||
ipc_event_stoi(const char *subscription, IPCEvent *event)
|
||||
{
|
||||
if (strcmp(subscription, "tag_change_event") == 0)
|
||||
*event = IPC_EVENT_TAG_CHANGE;
|
||||
else if (strcmp(subscription, "client_focus_change_event") == 0)
|
||||
*event = IPC_EVENT_CLIENT_FOCUS_CHANGE;
|
||||
else if (strcmp(subscription, "layout_change_event") == 0)
|
||||
*event = IPC_EVENT_LAYOUT_CHANGE;
|
||||
else if (strcmp(subscription, "monitor_focus_change_event") == 0)
|
||||
*event = IPC_EVENT_MONITOR_FOCUS_CHANGE;
|
||||
else if (strcmp(subscription, "focused_title_change_event") == 0)
|
||||
*event = IPC_EVENT_FOCUSED_TITLE_CHANGE;
|
||||
else if (strcmp(subscription, "focused_state_change_event") == 0)
|
||||
*event = IPC_EVENT_FOCUSED_STATE_CHANGE;
|
||||
else
|
||||
return -1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse a IPC_TYPE_SUBSCRIBE message from a client. This function extracts the
|
||||
* event name and the subscription action from the message.
|
||||
*
|
||||
* Returns 0 if message was successfully parsed
|
||||
* Returns -1 otherwise
|
||||
*/
|
||||
static int
|
||||
ipc_parse_subscribe(const char *msg, IPCSubscriptionAction *subscribe,
|
||||
IPCEvent *event)
|
||||
{
|
||||
char error_buffer[100];
|
||||
yajl_val parent = yajl_tree_parse((char *)msg, error_buffer, 100);
|
||||
|
||||
if (parent == NULL) {
|
||||
fputs("Failed to parse command from client\n", stderr);
|
||||
fprintf(stderr, "%s\n", error_buffer);
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Format:
|
||||
// {
|
||||
// "event": "<event name>"
|
||||
// "action": "<subscribe|unsubscribe>"
|
||||
// }
|
||||
const char *event_path[] = {"event", 0};
|
||||
yajl_val event_val = yajl_tree_get(parent, event_path, yajl_t_string);
|
||||
|
||||
if (event_val == NULL) {
|
||||
fputs("No 'event' key found in client message\n", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
const char *event_str = YAJL_GET_STRING(event_val);
|
||||
DEBUG("Received event: %s\n", event_str);
|
||||
|
||||
if (ipc_event_stoi(event_str, event) < 0) return -1;
|
||||
|
||||
const char *action_path[] = {"action", 0};
|
||||
yajl_val action_val = yajl_tree_get(parent, action_path, yajl_t_string);
|
||||
|
||||
if (action_val == NULL) {
|
||||
fputs("No 'action' key found in client message\n", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
const char *action = YAJL_GET_STRING(action_val);
|
||||
|
||||
if (strcmp(action, "subscribe") == 0)
|
||||
*subscribe = IPC_ACTION_SUBSCRIBE;
|
||||
else if (strcmp(action, "unsubscribe") == 0)
|
||||
*subscribe = IPC_ACTION_UNSUBSCRIBE;
|
||||
else {
|
||||
fputs("Invalid action specified for subscription\n", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
yajl_tree_free(parent);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse an IPC_TYPE_GET_DWM_CLIENT message from a client. This function
|
||||
* extracts the window id from the message.
|
||||
*
|
||||
* Returns 0 if message was successfully parsed
|
||||
* Returns -1 otherwise
|
||||
*/
|
||||
static int
|
||||
ipc_parse_get_dwm_client(const char *msg, Window *win)
|
||||
{
|
||||
char error_buffer[100];
|
||||
|
||||
yajl_val parent = yajl_tree_parse(msg, error_buffer, 100);
|
||||
|
||||
if (parent == NULL) {
|
||||
fputs("Failed to parse message from client\n", stderr);
|
||||
fprintf(stderr, "%s\n", error_buffer);
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Format:
|
||||
// {
|
||||
// "client_window_id": <client window id>
|
||||
// }
|
||||
const char *win_path[] = {"client_window_id", 0};
|
||||
yajl_val win_val = yajl_tree_get(parent, win_path, yajl_t_number);
|
||||
|
||||
if (win_val == NULL) {
|
||||
fputs("No client window id found in client message\n", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
*win = YAJL_GET_INTEGER(win_val);
|
||||
|
||||
yajl_tree_free(parent);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when an IPC_TYPE_RUN_COMMAND message is received from a client. This
|
||||
* function parses, executes the given command, and prepares a reply message to
|
||||
* the client indicating success/failure.
|
||||
*
|
||||
* NOTE: There is currently no check for argument validity beyond the number of
|
||||
* arguments given and types of arguments. There is also no way to check if the
|
||||
* function succeeded based on dwm's void(const Arg*) function types. Pointer
|
||||
* arguments can cause crashes if they are not validated in the function itself.
|
||||
*
|
||||
* Returns 0 if message was successfully parsed
|
||||
* Returns -1 on failure parsing message
|
||||
*/
|
||||
static int
|
||||
ipc_run_command(IPCClient *ipc_client, char *msg)
|
||||
{
|
||||
IPCParsedCommand parsed_command;
|
||||
IPCCommand ipc_command;
|
||||
|
||||
// Initialize struct
|
||||
memset(&parsed_command, 0, sizeof(IPCParsedCommand));
|
||||
|
||||
if (ipc_parse_run_command(msg, &parsed_command) < 0) {
|
||||
ipc_prepare_reply_failure(ipc_client, IPC_TYPE_RUN_COMMAND,
|
||||
"Failed to parse run command");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (ipc_get_ipc_command(parsed_command.name, &ipc_command) < 0) {
|
||||
ipc_prepare_reply_failure(ipc_client, IPC_TYPE_RUN_COMMAND,
|
||||
"Command %s not found", parsed_command.name);
|
||||
ipc_free_parsed_command_members(&parsed_command);
|
||||
return -1;
|
||||
}
|
||||
|
||||
int res = ipc_validate_run_command(&parsed_command, ipc_command);
|
||||
if (res < 0) {
|
||||
if (res == -1)
|
||||
ipc_prepare_reply_failure(ipc_client, IPC_TYPE_RUN_COMMAND,
|
||||
"%u arguments provided, %u expected",
|
||||
parsed_command.argc, ipc_command.argc);
|
||||
else if (res == -2)
|
||||
ipc_prepare_reply_failure(ipc_client, IPC_TYPE_RUN_COMMAND,
|
||||
"Type mismatch");
|
||||
ipc_free_parsed_command_members(&parsed_command);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (parsed_command.argc == 1)
|
||||
ipc_command.func.single_param(parsed_command.args);
|
||||
else if (parsed_command.argc > 1)
|
||||
ipc_command.func.array_param(parsed_command.args, parsed_command.argc);
|
||||
|
||||
DEBUG("Called function for command %s\n", parsed_command.name);
|
||||
|
||||
ipc_free_parsed_command_members(&parsed_command);
|
||||
|
||||
ipc_prepare_reply_success(ipc_client, IPC_TYPE_RUN_COMMAND);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when an IPC_TYPE_GET_MONITORS message is received from a client. It
|
||||
* prepares a reply with the properties of all of the monitors in JSON.
|
||||
*/
|
||||
static void
|
||||
ipc_get_monitors(IPCClient *c, Monitor *mons, Monitor *selmon)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_reply_init_message(&gen);
|
||||
dump_monitors(gen, mons, selmon);
|
||||
|
||||
ipc_reply_prepare_send_message(gen, c, IPC_TYPE_GET_MONITORS);
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when an IPC_TYPE_GET_TAGS message is received from a client. It
|
||||
* prepares a reply with info about all the tags in JSON.
|
||||
*/
|
||||
static void
|
||||
ipc_get_tags(IPCClient *c, const int tags_len)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_reply_init_message(&gen);
|
||||
|
||||
dump_tags(gen, tags_len);
|
||||
|
||||
ipc_reply_prepare_send_message(gen, c, IPC_TYPE_GET_TAGS);
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when an IPC_TYPE_GET_LAYOUTS message is received from a client. It
|
||||
* prepares a reply with a JSON array of available layouts
|
||||
*/
|
||||
static void
|
||||
ipc_get_layouts(IPCClient *c, const Layout layouts[], const int layouts_len)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_reply_init_message(&gen);
|
||||
|
||||
dump_layouts(gen, layouts, layouts_len);
|
||||
|
||||
ipc_reply_prepare_send_message(gen, c, IPC_TYPE_GET_LAYOUTS);
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when an IPC_TYPE_GET_DWM_CLIENT message is received from a client. It
|
||||
* prepares a JSON reply with the properties of the client with the specified
|
||||
* window XID.
|
||||
*
|
||||
* Returns 0 if the message was successfully parsed and if the client with the
|
||||
* specified window XID was found
|
||||
* Returns -1 if the message could not be parsed
|
||||
*/
|
||||
static int
|
||||
ipc_get_dwm_client(IPCClient *ipc_client, const char *msg, const Monitor *mons)
|
||||
{
|
||||
Window win;
|
||||
|
||||
if (ipc_parse_get_dwm_client(msg, &win) < 0) return -1;
|
||||
|
||||
// Find client with specified window XID
|
||||
for (const Monitor *m = mons; m; m = m->next)
|
||||
for (Client *c = m->clients; c; c = c->next)
|
||||
if (c->win == win) {
|
||||
yajl_gen gen;
|
||||
ipc_reply_init_message(&gen);
|
||||
|
||||
dump_client(gen, c);
|
||||
|
||||
ipc_reply_prepare_send_message(gen, ipc_client,
|
||||
IPC_TYPE_GET_DWM_CLIENT);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
ipc_prepare_reply_failure(ipc_client, IPC_TYPE_GET_DWM_CLIENT,
|
||||
"Client with window id %d not found", win);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when an IPC_TYPE_SUBSCRIBE message is received from a client. It
|
||||
* subscribes/unsubscribes the client from the specified event and replies with
|
||||
* the result.
|
||||
*
|
||||
* Returns 0 if the message was successfully parsed.
|
||||
* Returns -1 if the message could not be parsed
|
||||
*/
|
||||
static int
|
||||
ipc_subscribe(IPCClient *c, const char *msg)
|
||||
{
|
||||
IPCSubscriptionAction action = IPC_ACTION_SUBSCRIBE;
|
||||
IPCEvent event = 0;
|
||||
|
||||
if (ipc_parse_subscribe(msg, &action, &event)) {
|
||||
ipc_prepare_reply_failure(c, IPC_TYPE_SUBSCRIBE, "Event does not exist");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (action == IPC_ACTION_SUBSCRIBE) {
|
||||
DEBUG("Subscribing client on fd %d to %d\n", c->fd, event);
|
||||
c->subscriptions |= event;
|
||||
} else if (action == IPC_ACTION_UNSUBSCRIBE) {
|
||||
DEBUG("Unsubscribing client on fd %d to %d\n", c->fd, event);
|
||||
c->subscriptions ^= event;
|
||||
} else {
|
||||
ipc_prepare_reply_failure(c, IPC_TYPE_SUBSCRIBE,
|
||||
"Invalid subscription action");
|
||||
return -1;
|
||||
}
|
||||
|
||||
ipc_prepare_reply_success(c, IPC_TYPE_SUBSCRIBE);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
ipc_init(const char *socket_path, const int p_epoll_fd, IPCCommand commands[],
|
||||
const int commands_len)
|
||||
{
|
||||
// Initialize struct to 0
|
||||
memset(&sock_epoll_event, 0, sizeof(sock_epoll_event));
|
||||
|
||||
int socket_fd = ipc_create_socket(socket_path);
|
||||
if (socket_fd < 0) return -1;
|
||||
|
||||
ipc_commands = commands;
|
||||
ipc_commands_len = commands_len;
|
||||
|
||||
epoll_fd = p_epoll_fd;
|
||||
|
||||
// Wake up to incoming connection requests
|
||||
sock_epoll_event.data.fd = socket_fd;
|
||||
sock_epoll_event.events = EPOLLIN;
|
||||
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, socket_fd, &sock_epoll_event)) {
|
||||
fputs("Failed to add sock file descriptor to epoll", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return socket_fd;
|
||||
}
|
||||
|
||||
void
|
||||
ipc_cleanup()
|
||||
{
|
||||
IPCClient *c = ipc_clients;
|
||||
// Free clients and their buffers
|
||||
while (c) {
|
||||
ipc_drop_client(c);
|
||||
c = ipc_clients;
|
||||
}
|
||||
|
||||
// Stop waking up for socket events
|
||||
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, sock_fd, &sock_epoll_event);
|
||||
|
||||
// Uninitialize all static variables
|
||||
epoll_fd = -1;
|
||||
sock_fd = -1;
|
||||
ipc_commands = NULL;
|
||||
ipc_commands_len = 0;
|
||||
memset(&sock_epoll_event, 0, sizeof(struct epoll_event));
|
||||
memset(&sockaddr, 0, sizeof(struct sockaddr_un));
|
||||
|
||||
// Delete socket
|
||||
unlink(sockaddr.sun_path);
|
||||
|
||||
shutdown(sock_fd, SHUT_RDWR);
|
||||
close(sock_fd);
|
||||
}
|
||||
|
||||
int
|
||||
ipc_get_sock_fd()
|
||||
{
|
||||
return sock_fd;
|
||||
}
|
||||
|
||||
IPCClient *
|
||||
ipc_get_client(int fd)
|
||||
{
|
||||
return ipc_list_get_client(ipc_clients, fd);
|
||||
}
|
||||
|
||||
int
|
||||
ipc_is_client_registered(int fd)
|
||||
{
|
||||
return (ipc_get_client(fd) != NULL);
|
||||
}
|
||||
|
||||
int
|
||||
ipc_accept_client()
|
||||
{
|
||||
int fd = -1;
|
||||
|
||||
struct sockaddr_un client_addr;
|
||||
socklen_t len = 0;
|
||||
|
||||
// For portability clear the addr structure, since some implementations
|
||||
// have nonstandard fields in the structure
|
||||
memset(&client_addr, 0, sizeof(struct sockaddr_un));
|
||||
|
||||
fd = accept(sock_fd, (struct sockaddr *)&client_addr, &len);
|
||||
if (fd < 0 && errno != EINTR) {
|
||||
fputs("Failed to accept IPC connection from client", stderr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
|
||||
shutdown(fd, SHUT_RDWR);
|
||||
close(fd);
|
||||
fputs("Failed to set flags on new client fd", stderr);
|
||||
}
|
||||
|
||||
IPCClient *nc = ipc_client_new(fd);
|
||||
if (nc == NULL) return -1;
|
||||
|
||||
// Wake up to messages from this client
|
||||
nc->event.data.fd = fd;
|
||||
nc->event.events = EPOLLIN | EPOLLHUP;
|
||||
epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &nc->event);
|
||||
|
||||
ipc_list_add_client(&ipc_clients, nc);
|
||||
|
||||
DEBUG("%s%d\n", "New client at fd: ", fd);
|
||||
|
||||
return fd;
|
||||
}
|
||||
|
||||
int
|
||||
ipc_drop_client(IPCClient *c)
|
||||
{
|
||||
int fd = c->fd;
|
||||
shutdown(fd, SHUT_RDWR);
|
||||
int res = close(fd);
|
||||
|
||||
if (res == 0) {
|
||||
struct epoll_event ev;
|
||||
|
||||
// Stop waking up to messages from this client
|
||||
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, fd, &ev);
|
||||
ipc_list_remove_client(&ipc_clients, c);
|
||||
|
||||
free(c->buffer);
|
||||
free(c);
|
||||
|
||||
DEBUG("Successfully removed client on fd %d\n", fd);
|
||||
} else if (res < 0 && res != EINTR) {
|
||||
fprintf(stderr, "Failed to close fd %d\n", fd);
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
int
|
||||
ipc_read_client(IPCClient *c, IPCMessageType *msg_type, uint32_t *msg_size,
|
||||
char **msg)
|
||||
{
|
||||
int fd = c->fd;
|
||||
int ret =
|
||||
ipc_recv_message(fd, (uint8_t *)msg_type, msg_size, (uint8_t **)msg);
|
||||
|
||||
if (ret < 0) {
|
||||
// This will happen if these errors occur while reading header
|
||||
if (ret == -1 &&
|
||||
(errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK))
|
||||
return -2;
|
||||
|
||||
fprintf(stderr, "Error reading message: dropping client at fd %d\n", fd);
|
||||
ipc_drop_client(c);
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Make sure receive message is null terminated to avoid parsing issues
|
||||
if (*msg_size > 0) {
|
||||
size_t len = *msg_size;
|
||||
nullterminate(msg, &len);
|
||||
*msg_size = len;
|
||||
}
|
||||
|
||||
DEBUG("[fd %d] ", fd);
|
||||
if (*msg_size > 0)
|
||||
DEBUG("Received message: '%.*s' ", *msg_size, *msg);
|
||||
else
|
||||
DEBUG("Received empty message ");
|
||||
DEBUG("Message type: %" PRIu8 " ", (uint8_t)*msg_type);
|
||||
DEBUG("Message size: %" PRIu32 "\n", *msg_size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
ipc_write_client(IPCClient *c)
|
||||
{
|
||||
const ssize_t n = ipc_write_message(c->fd, c->buffer, c->buffer_size);
|
||||
|
||||
if (n < 0) return n;
|
||||
|
||||
// TODO: Deal with client timeouts
|
||||
|
||||
if (n == c->buffer_size) {
|
||||
c->buffer_size = 0;
|
||||
free(c->buffer);
|
||||
// No dangling pointers!
|
||||
c->buffer = NULL;
|
||||
// Stop waking up when client is ready to receive messages
|
||||
if (c->event.events & EPOLLOUT) {
|
||||
c->event.events -= EPOLLOUT;
|
||||
epoll_ctl(epoll_fd, EPOLL_CTL_MOD, c->fd, &c->event);
|
||||
}
|
||||
return n;
|
||||
}
|
||||
|
||||
// Shift unwritten buffer to beginning of buffer and reallocate
|
||||
c->buffer_size -= n;
|
||||
memmove(c->buffer, c->buffer + n, c->buffer_size);
|
||||
c->buffer = (char *)realloc(c->buffer, c->buffer_size);
|
||||
|
||||
return n;
|
||||
}
|
||||
|
||||
void
|
||||
ipc_prepare_send_message(IPCClient *c, const IPCMessageType msg_type,
|
||||
const uint32_t msg_size, const char *msg)
|
||||
{
|
||||
dwm_ipc_header_t header = {
|
||||
.magic = IPC_MAGIC_ARR, .type = msg_type, .size = msg_size};
|
||||
|
||||
uint32_t header_size = sizeof(dwm_ipc_header_t);
|
||||
uint32_t packet_size = header_size + msg_size;
|
||||
|
||||
if (c->buffer == NULL)
|
||||
c->buffer = (char *)malloc(c->buffer_size + packet_size);
|
||||
else
|
||||
c->buffer = (char *)realloc(c->buffer, c->buffer_size + packet_size);
|
||||
|
||||
// Copy header to end of client buffer
|
||||
memcpy(c->buffer + c->buffer_size, &header, header_size);
|
||||
c->buffer_size += header_size;
|
||||
|
||||
// Copy message to end of client buffer
|
||||
memcpy(c->buffer + c->buffer_size, msg, msg_size);
|
||||
c->buffer_size += msg_size;
|
||||
|
||||
// Wake up when client is ready to receive messages
|
||||
c->event.events |= EPOLLOUT;
|
||||
epoll_ctl(epoll_fd, EPOLL_CTL_MOD, c->fd, &c->event);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_prepare_reply_failure(IPCClient *c, IPCMessageType msg_type,
|
||||
const char *format, ...)
|
||||
{
|
||||
yajl_gen gen;
|
||||
va_list args;
|
||||
|
||||
// Get output size
|
||||
va_start(args, format);
|
||||
size_t len = vsnprintf(NULL, 0, format, args);
|
||||
va_end(args);
|
||||
char *buffer = (char *)malloc((len + 1) * sizeof(char));
|
||||
|
||||
ipc_reply_init_message(&gen);
|
||||
|
||||
va_start(args, format);
|
||||
vsnprintf(buffer, len + 1, format, args);
|
||||
va_end(args);
|
||||
dump_error_message(gen, buffer);
|
||||
|
||||
ipc_reply_prepare_send_message(gen, c, msg_type);
|
||||
fprintf(stderr, "[fd %d] Error: %s\n", c->fd, buffer);
|
||||
|
||||
free(buffer);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_prepare_reply_success(IPCClient *c, IPCMessageType msg_type)
|
||||
{
|
||||
const char *success_msg = "{\"result\":\"success\"}";
|
||||
const size_t msg_len = strlen(success_msg) + 1; // +1 for null char
|
||||
|
||||
ipc_prepare_send_message(c, msg_type, msg_len, success_msg);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_tag_change_event(int mon_num, TagState old_state, TagState new_state)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_event_init_message(&gen);
|
||||
dump_tag_event(gen, mon_num, old_state, new_state);
|
||||
ipc_event_prepare_send_message(gen, IPC_EVENT_TAG_CHANGE);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_client_focus_change_event(int mon_num, Client *old_client,
|
||||
Client *new_client)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_event_init_message(&gen);
|
||||
dump_client_focus_change_event(gen, old_client, new_client, mon_num);
|
||||
ipc_event_prepare_send_message(gen, IPC_EVENT_CLIENT_FOCUS_CHANGE);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_layout_change_event(const int mon_num, const char *old_symbol,
|
||||
const Layout *old_layout, const char *new_symbol,
|
||||
const Layout *new_layout)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_event_init_message(&gen);
|
||||
dump_layout_change_event(gen, mon_num, old_symbol, old_layout, new_symbol,
|
||||
new_layout);
|
||||
ipc_event_prepare_send_message(gen, IPC_EVENT_LAYOUT_CHANGE);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_monitor_focus_change_event(const int last_mon_num, const int new_mon_num)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_event_init_message(&gen);
|
||||
dump_monitor_focus_change_event(gen, last_mon_num, new_mon_num);
|
||||
ipc_event_prepare_send_message(gen, IPC_EVENT_MONITOR_FOCUS_CHANGE);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_focused_title_change_event(const int mon_num, const Window client_id,
|
||||
const char *old_name, const char *new_name)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_event_init_message(&gen);
|
||||
dump_focused_title_change_event(gen, mon_num, client_id, old_name, new_name);
|
||||
ipc_event_prepare_send_message(gen, IPC_EVENT_FOCUSED_TITLE_CHANGE);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_focused_state_change_event(const int mon_num, const Window client_id,
|
||||
const ClientState *old_state,
|
||||
const ClientState *new_state)
|
||||
{
|
||||
yajl_gen gen;
|
||||
ipc_event_init_message(&gen);
|
||||
dump_focused_state_change_event(gen, mon_num, client_id, old_state,
|
||||
new_state);
|
||||
ipc_event_prepare_send_message(gen, IPC_EVENT_FOCUSED_STATE_CHANGE);
|
||||
}
|
||||
|
||||
void
|
||||
ipc_send_events(Monitor *mons, Monitor **lastselmon, Monitor *selmon)
|
||||
{
|
||||
for (Monitor *m = mons; m; m = m->next) {
|
||||
unsigned int urg = 0, occ = 0, tagset = 0;
|
||||
|
||||
for (Client *c = m->clients; c; c = c->next) {
|
||||
occ |= c->tags;
|
||||
|
||||
if (c->isurgent) urg |= c->tags;
|
||||
}
|
||||
tagset = m->tagset[m->seltags];
|
||||
|
||||
TagState new_state = {.selected = tagset, .occupied = occ, .urgent = urg};
|
||||
|
||||
if (memcmp(&m->tagstate, &new_state, sizeof(TagState)) != 0) {
|
||||
ipc_tag_change_event(m->num, m->tagstate, new_state);
|
||||
m->tagstate = new_state;
|
||||
}
|
||||
|
||||
if (m->lastsel != m->sel) {
|
||||
ipc_client_focus_change_event(m->num, m->lastsel, m->sel);
|
||||
m->lastsel = m->sel;
|
||||
}
|
||||
|
||||
if (strcmp(m->ltsymbol, m->lastltsymbol) != 0 ||
|
||||
m->lastlt != m->lt[m->sellt]) {
|
||||
ipc_layout_change_event(m->num, m->lastltsymbol, m->lastlt, m->ltsymbol,
|
||||
m->lt[m->sellt]);
|
||||
strcpy(m->lastltsymbol, m->ltsymbol);
|
||||
m->lastlt = m->lt[m->sellt];
|
||||
}
|
||||
|
||||
if (*lastselmon != selmon) {
|
||||
if (*lastselmon != NULL)
|
||||
ipc_monitor_focus_change_event((*lastselmon)->num, selmon->num);
|
||||
*lastselmon = selmon;
|
||||
}
|
||||
|
||||
Client *sel = m->sel;
|
||||
if (!sel) continue;
|
||||
ClientState *o = &m->sel->prevstate;
|
||||
ClientState n = {.oldstate = sel->oldstate,
|
||||
.isfixed = sel->isfixed,
|
||||
.isfloating = sel->isfloating,
|
||||
.isfullscreen = sel->isfullscreen,
|
||||
.isurgent = sel->isurgent,
|
||||
.neverfocus = sel->neverfocus};
|
||||
if (memcmp(o, &n, sizeof(ClientState)) != 0) {
|
||||
ipc_focused_state_change_event(m->num, m->sel->win, o, &n);
|
||||
*o = n;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
ipc_handle_client_epoll_event(struct epoll_event *ev, Monitor *mons,
|
||||
Monitor **lastselmon, Monitor *selmon, const int tags_len,
|
||||
const Layout *layouts, const int layouts_len)
|
||||
{
|
||||
int fd = ev->data.fd;
|
||||
IPCClient *c = ipc_get_client(fd);
|
||||
|
||||
if (ev->events & EPOLLHUP) {
|
||||
DEBUG("EPOLLHUP received from client at fd %d\n", fd);
|
||||
ipc_drop_client(c);
|
||||
} else if (ev->events & EPOLLOUT) {
|
||||
DEBUG("Sending message to client at fd %d...\n", fd);
|
||||
if (c->buffer_size) ipc_write_client(c);
|
||||
} else if (ev->events & EPOLLIN) {
|
||||
IPCMessageType msg_type = 0;
|
||||
uint32_t msg_size = 0;
|
||||
char *msg = NULL;
|
||||
|
||||
DEBUG("Received message from fd %d\n", fd);
|
||||
if (ipc_read_client(c, &msg_type, &msg_size, &msg) < 0) return -1;
|
||||
|
||||
if (msg_type == IPC_TYPE_GET_MONITORS)
|
||||
ipc_get_monitors(c, mons, selmon);
|
||||
else if (msg_type == IPC_TYPE_GET_TAGS)
|
||||
ipc_get_tags(c, tags_len);
|
||||
else if (msg_type == IPC_TYPE_GET_LAYOUTS)
|
||||
ipc_get_layouts(c, layouts, layouts_len);
|
||||
else if (msg_type == IPC_TYPE_RUN_COMMAND) {
|
||||
if (ipc_run_command(c, msg) < 0) return -1;
|
||||
ipc_send_events(mons, lastselmon, selmon);
|
||||
} else if (msg_type == IPC_TYPE_GET_DWM_CLIENT) {
|
||||
if (ipc_get_dwm_client(c, msg, mons) < 0) return -1;
|
||||
} else if (msg_type == IPC_TYPE_SUBSCRIBE) {
|
||||
if (ipc_subscribe(c, msg) < 0) return -1;
|
||||
} else {
|
||||
fprintf(stderr, "Invalid message type received from fd %d", fd);
|
||||
ipc_prepare_reply_failure(c, msg_type, "Invalid message type: %d",
|
||||
msg_type);
|
||||
}
|
||||
free(msg);
|
||||
} else {
|
||||
fprintf(stderr, "Epoll event returned %d from fd %d\n", ev->events, fd);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
ipc_handle_socket_epoll_event(struct epoll_event *ev)
|
||||
{
|
||||
if (!(ev->events & EPOLLIN)) return -1;
|
||||
|
||||
// EPOLLIN means incoming client connection request
|
||||
fputs("Received EPOLLIN event on socket\n", stderr);
|
||||
int new_fd = ipc_accept_client();
|
||||
|
||||
return new_fd;
|
||||
}
|
||||
319
patch/ipc/ipc.h
Normal file
319
patch/ipc/ipc.h
Normal file
@ -0,0 +1,319 @@
|
||||
#ifndef IPC_H_
|
||||
#define IPC_H_
|
||||
|
||||
#include <stdint.h>
|
||||
#include <sys/epoll.h>
|
||||
#include <yajl/yajl_gen.h>
|
||||
|
||||
#include "IPCClient.h"
|
||||
|
||||
// clang-format off
|
||||
#define IPC_MAGIC "DWM-IPC"
|
||||
#define IPC_MAGIC_ARR { 'D', 'W', 'M', '-', 'I', 'P', 'C'}
|
||||
#define IPC_MAGIC_LEN 7 // Not including null char
|
||||
|
||||
#define IPCCOMMAND(FUNC, ARGC, TYPES) \
|
||||
{ #FUNC, {FUNC }, ARGC, (ArgType[ARGC])TYPES }
|
||||
// clang-format on
|
||||
|
||||
typedef enum IPCMessageType {
|
||||
IPC_TYPE_RUN_COMMAND = 0,
|
||||
IPC_TYPE_GET_MONITORS = 1,
|
||||
IPC_TYPE_GET_TAGS = 2,
|
||||
IPC_TYPE_GET_LAYOUTS = 3,
|
||||
IPC_TYPE_GET_DWM_CLIENT = 4,
|
||||
IPC_TYPE_SUBSCRIBE = 5,
|
||||
IPC_TYPE_EVENT = 6
|
||||
} IPCMessageType;
|
||||
|
||||
typedef enum IPCEvent {
|
||||
IPC_EVENT_TAG_CHANGE = 1 << 0,
|
||||
IPC_EVENT_CLIENT_FOCUS_CHANGE = 1 << 1,
|
||||
IPC_EVENT_LAYOUT_CHANGE = 1 << 2,
|
||||
IPC_EVENT_MONITOR_FOCUS_CHANGE = 1 << 3,
|
||||
IPC_EVENT_FOCUSED_TITLE_CHANGE = 1 << 4,
|
||||
IPC_EVENT_FOCUSED_STATE_CHANGE = 1 << 5
|
||||
} IPCEvent;
|
||||
|
||||
typedef enum IPCSubscriptionAction {
|
||||
IPC_ACTION_UNSUBSCRIBE = 0,
|
||||
IPC_ACTION_SUBSCRIBE = 1
|
||||
} IPCSubscriptionAction;
|
||||
|
||||
/**
|
||||
* Every IPC packet starts with this structure
|
||||
*/
|
||||
typedef struct dwm_ipc_header {
|
||||
uint8_t magic[IPC_MAGIC_LEN];
|
||||
uint32_t size;
|
||||
uint8_t type;
|
||||
} __attribute((packed)) dwm_ipc_header_t;
|
||||
|
||||
typedef enum ArgType {
|
||||
ARG_TYPE_NONE = 0,
|
||||
ARG_TYPE_UINT = 1,
|
||||
ARG_TYPE_SINT = 2,
|
||||
ARG_TYPE_FLOAT = 3,
|
||||
ARG_TYPE_PTR = 4,
|
||||
ARG_TYPE_STR = 5
|
||||
} ArgType;
|
||||
|
||||
/**
|
||||
* An IPCCommand function can have either of these function signatures
|
||||
*/
|
||||
typedef union ArgFunction {
|
||||
void (*single_param)(const Arg *);
|
||||
void (*array_param)(const Arg *, int);
|
||||
} ArgFunction;
|
||||
|
||||
typedef struct IPCCommand {
|
||||
char *name;
|
||||
ArgFunction func;
|
||||
unsigned int argc;
|
||||
ArgType *arg_types;
|
||||
} IPCCommand;
|
||||
|
||||
typedef struct IPCParsedCommand {
|
||||
char *name;
|
||||
Arg *args;
|
||||
ArgType *arg_types;
|
||||
unsigned int argc;
|
||||
} IPCParsedCommand;
|
||||
|
||||
/**
|
||||
* Initialize the IPC socket and the IPC module
|
||||
*
|
||||
* @param socket_path Path to create the socket at
|
||||
* @param epoll_fd File descriptor for epoll
|
||||
* @param commands Address of IPCCommands array defined in config.h
|
||||
* @param commands_len Length of commands[] array
|
||||
*
|
||||
* @return int The file descriptor of the socket if it was successfully created,
|
||||
* -1 otherwise
|
||||
*/
|
||||
int ipc_init(const char *socket_path, const int p_epoll_fd,
|
||||
IPCCommand commands[], const int commands_len);
|
||||
|
||||
/**
|
||||
* Uninitialize the socket and module. Free allocated memory and restore static
|
||||
* variables to their state before ipc_init
|
||||
*/
|
||||
void ipc_cleanup();
|
||||
|
||||
/**
|
||||
* Get the file descriptor of the IPC socket
|
||||
*
|
||||
* @return int File descriptor of IPC socket, -1 if socket not created.
|
||||
*/
|
||||
int ipc_get_sock_fd();
|
||||
|
||||
/**
|
||||
* Get address to IPCClient with specified file descriptor
|
||||
*
|
||||
* @param fd File descriptor of IPC Client
|
||||
*
|
||||
* @return Address to IPCClient with specified file descriptor, -1 otherwise
|
||||
*/
|
||||
IPCClient *ipc_get_client(int fd);
|
||||
|
||||
/**
|
||||
* Check if an IPC client exists with the specified file descriptor
|
||||
*
|
||||
* @param fd File descriptor
|
||||
*
|
||||
* @return int 1 if client exists, 0 otherwise
|
||||
*/
|
||||
int ipc_is_client_registered(int fd);
|
||||
|
||||
/**
|
||||
* Disconnect an IPCClient from the socket and remove the client from the list
|
||||
* of known connected clients
|
||||
*
|
||||
* @param c Address of IPCClient
|
||||
*
|
||||
* @return 0 if the client's file descriptor was closed successfully, the
|
||||
* result of executing close() on the file descriptor otherwise.
|
||||
*/
|
||||
int ipc_drop_client(IPCClient *c);
|
||||
|
||||
/**
|
||||
* Accept an IPC Client requesting to connect to the socket and add it to the
|
||||
* list of clients
|
||||
*
|
||||
* @return File descriptor of new client, -1 on error
|
||||
*/
|
||||
int ipc_accept_client();
|
||||
|
||||
/**
|
||||
* Read an incoming message from an accepted IPC client
|
||||
*
|
||||
* @param c Address of IPCClient
|
||||
* @param msg_type Address to IPCMessageType variable which will be assigned
|
||||
* the message type of the received message
|
||||
* @param msg_size Address to uint32_t variable which will be assigned the size
|
||||
* of the received message
|
||||
* @param msg Address to char* variable which will be assigned the address of
|
||||
* the received message. This must be freed using free().
|
||||
*
|
||||
* @return 0 on success, -1 on error reading message, -2 if reading the message
|
||||
* resulted in EAGAIN, EINTR, or EWOULDBLOCK.
|
||||
*/
|
||||
int ipc_read_client(IPCClient *c, IPCMessageType *msg_type, uint32_t *msg_size,
|
||||
char **msg);
|
||||
|
||||
/**
|
||||
* Write any pending buffer of the client to the client's socket
|
||||
*
|
||||
* @param c Client whose buffer to write
|
||||
*
|
||||
* @return Number of bytes written >= 0, -1 otherwise. errno will still be set
|
||||
* from the write operation.
|
||||
*/
|
||||
ssize_t ipc_write_client(IPCClient *c);
|
||||
|
||||
/**
|
||||
* Prepare a message in the specified client's buffer.
|
||||
*
|
||||
* @param c Client to prepare message for
|
||||
* @param msg_type Type of message to prepare
|
||||
* @param msg_size Size of the message in bytes. Should not exceed
|
||||
* MAX_MESSAGE_SIZE
|
||||
* @param msg Message to prepare (not including header). This pointer can be
|
||||
* freed after the function invocation.
|
||||
*/
|
||||
void ipc_prepare_send_message(IPCClient *c, const IPCMessageType msg_type,
|
||||
const uint32_t msg_size, const char *msg);
|
||||
|
||||
/**
|
||||
* Prepare an error message in the specified client's buffer
|
||||
*
|
||||
* @param c Client to prepare message for
|
||||
* @param msg_type Type of message
|
||||
* @param format Format string following vsprintf
|
||||
* @param ... Arguments for format string
|
||||
*/
|
||||
void ipc_prepare_reply_failure(IPCClient *c, IPCMessageType msg_type,
|
||||
const char *format, ...);
|
||||
|
||||
/**
|
||||
* Prepare a success message in the specified client's buffer
|
||||
*
|
||||
* @param c Client to prepare message for
|
||||
* @param msg_type Type of message
|
||||
*/
|
||||
void ipc_prepare_reply_success(IPCClient *c, IPCMessageType msg_type);
|
||||
|
||||
/**
|
||||
* Send a tag_change_event to all subscribers. Should be called only when there
|
||||
* has been a tag state change.
|
||||
*
|
||||
* @param mon_num The index of the monitor (Monitor.num property)
|
||||
* @param old_state The old tag state
|
||||
* @param new_state The new (now current) tag state
|
||||
*/
|
||||
void ipc_tag_change_event(const int mon_num, TagState old_state,
|
||||
TagState new_state);
|
||||
|
||||
/**
|
||||
* Send a client_focus_change_event to all subscribers. Should be called only
|
||||
* when the client focus changes.
|
||||
*
|
||||
* @param mon_num The index of the monitor (Monitor.num property)
|
||||
* @param old_client The old DWM client selection (Monitor.oldsel)
|
||||
* @param new_client The new (now current) DWM client selection
|
||||
*/
|
||||
void ipc_client_focus_change_event(const int mon_num, Client *old_client,
|
||||
Client *new_client);
|
||||
|
||||
/**
|
||||
* Send a layout_change_event to all subscribers. Should be called only
|
||||
* when there has been a layout change.
|
||||
*
|
||||
* @param mon_num The index of the monitor (Monitor.num property)
|
||||
* @param old_symbol The old layout symbol
|
||||
* @param old_layout Address to the old Layout
|
||||
* @param new_symbol The new (now current) layout symbol
|
||||
* @param new_layout Address to the new Layout
|
||||
*/
|
||||
void ipc_layout_change_event(const int mon_num, const char *old_symbol,
|
||||
const Layout *old_layout, const char *new_symbol,
|
||||
const Layout *new_layout);
|
||||
|
||||
/**
|
||||
* Send a monitor_focus_change_event to all subscribers. Should be called only
|
||||
* when the monitor focus changes.
|
||||
*
|
||||
* @param last_mon_num The index of the previously selected monitor
|
||||
* @param new_mon_num The index of the newly selected monitor
|
||||
*/
|
||||
void ipc_monitor_focus_change_event(const int last_mon_num,
|
||||
const int new_mon_num);
|
||||
|
||||
/**
|
||||
* Send a focused_title_change_event to all subscribers. Should only be called
|
||||
* if a selected client has a title change.
|
||||
*
|
||||
* @param mon_num Index of the client's monitor
|
||||
* @param client_id Window XID of client
|
||||
* @param old_name Old name of the client window
|
||||
* @param new_name New name of the client window
|
||||
*/
|
||||
void ipc_focused_title_change_event(const int mon_num, const Window client_id,
|
||||
const char *old_name, const char *new_name);
|
||||
|
||||
/**
|
||||
* Send a focused_state_change_event to all subscribers. Should only be called
|
||||
* if a selected client has a state change.
|
||||
*
|
||||
* @param mon_num Index of the client's monitor
|
||||
* @param client_id Window XID of client
|
||||
* @param old_state Old state of the client
|
||||
* @param new_state New state of the client
|
||||
*/
|
||||
void ipc_focused_state_change_event(const int mon_num, const Window client_id,
|
||||
const ClientState *old_state,
|
||||
const ClientState *new_state);
|
||||
/**
|
||||
* Check to see if an event has occured and call the *_change_event functions
|
||||
* accordingly
|
||||
*
|
||||
* @param mons Address of Monitor pointing to start of linked list
|
||||
* @param lastselmon Address of pointer to previously selected monitor
|
||||
* @param selmon Address of selected Monitor
|
||||
*/
|
||||
void ipc_send_events(Monitor *mons, Monitor **lastselmon, Monitor *selmon);
|
||||
|
||||
/**
|
||||
* Handle an epoll event caused by a registered IPC client. Read, process, and
|
||||
* handle any received messages from clients. Write pending buffer to client if
|
||||
* the client is ready to receive messages. Drop clients that have sent an
|
||||
* EPOLLHUP.
|
||||
*
|
||||
* @param ev Associated epoll event returned by epoll_wait
|
||||
* @param mons Address of Monitor pointing to start of linked list
|
||||
* @param selmon Address of selected Monitor
|
||||
* @param lastselmon Address of pointer to previously selected monitor
|
||||
* @param tags Array of tag names
|
||||
* @param tags_len Length of tags array
|
||||
* @param layouts Array of available layouts
|
||||
* @param layouts_len Length of layouts array
|
||||
*
|
||||
* @return 0 if event was successfully handled, -1 on any error receiving
|
||||
* or handling incoming messages or unhandled epoll event.
|
||||
*/
|
||||
int ipc_handle_client_epoll_event(struct epoll_event *ev, Monitor *mons,
|
||||
Monitor **lastselmon, Monitor *selmon, const int tags_len,
|
||||
const Layout *layouts, const int layouts_len);
|
||||
|
||||
/**
|
||||
* Handle an epoll event caused by the IPC socket. This function only handles an
|
||||
* EPOLLIN event indicating a new client requesting to connect to the socket.
|
||||
*
|
||||
* @param ev Associated epoll event returned by epoll_wait
|
||||
*
|
||||
* @return 0, if the event was successfully handled, -1 if not an EPOLLIN event
|
||||
* or if a new IPC client connection request could not be accepted.
|
||||
*/
|
||||
int ipc_handle_socket_epoll_event(struct epoll_event *ev);
|
||||
|
||||
#endif /* IPC_H_ */
|
||||
135
patch/ipc/util.c
Normal file
135
patch/ipc/util.c
Normal file
@ -0,0 +1,135 @@
|
||||
#include <errno.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
int
|
||||
normalizepath(const char *path, char **normal)
|
||||
{
|
||||
size_t len = strlen(path);
|
||||
*normal = (char *)malloc((len + 1) * sizeof(char));
|
||||
const char *walk = path;
|
||||
const char *match;
|
||||
size_t newlen = 0;
|
||||
|
||||
while ((match = strchr(walk, '/'))) {
|
||||
// Copy everything between match and walk
|
||||
strncpy(*normal + newlen, walk, match - walk);
|
||||
newlen += match - walk;
|
||||
walk += match - walk;
|
||||
|
||||
// Skip all repeating slashes
|
||||
while (*walk == '/')
|
||||
walk++;
|
||||
|
||||
// If not last character in path
|
||||
if (walk != path + len)
|
||||
(*normal)[newlen++] = '/';
|
||||
}
|
||||
|
||||
(*normal)[newlen++] = '\0';
|
||||
|
||||
// Copy remaining path
|
||||
strcat(*normal, walk);
|
||||
newlen += strlen(walk);
|
||||
|
||||
*normal = (char *)realloc(*normal, newlen * sizeof(char));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
parentdir(const char *path, char **parent)
|
||||
{
|
||||
char *normal;
|
||||
char *walk;
|
||||
|
||||
normalizepath(path, &normal);
|
||||
|
||||
// Pointer to last '/'
|
||||
if (!(walk = strrchr(normal, '/'))) {
|
||||
free(normal);
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Get path up to last '/'
|
||||
size_t len = walk - normal;
|
||||
*parent = (char *)malloc((len + 1) * sizeof(char));
|
||||
|
||||
// Copy path up to last '/'
|
||||
strncpy(*parent, normal, len);
|
||||
// Add null char
|
||||
(*parent)[len] = '\0';
|
||||
|
||||
free(normal);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
mkdirp(const char *path)
|
||||
{
|
||||
char *normal;
|
||||
char *walk;
|
||||
size_t normallen;
|
||||
|
||||
normalizepath(path, &normal);
|
||||
normallen = strlen(normal);
|
||||
walk = normal;
|
||||
|
||||
while (walk < normal + normallen + 1) {
|
||||
// Get length from walk to next /
|
||||
size_t n = strcspn(walk, "/");
|
||||
|
||||
// Skip path /
|
||||
if (n == 0) {
|
||||
walk++;
|
||||
continue;
|
||||
}
|
||||
|
||||
// Length of current path segment
|
||||
size_t curpathlen = walk - normal + n;
|
||||
char curpath[curpathlen + 1];
|
||||
struct stat s;
|
||||
|
||||
// Copy path segment to stat
|
||||
strncpy(curpath, normal, curpathlen);
|
||||
strcpy(curpath + curpathlen, "");
|
||||
int res = stat(curpath, &s);
|
||||
|
||||
if (res < 0) {
|
||||
if (errno == ENOENT) {
|
||||
DEBUG("Making directory %s\n", curpath);
|
||||
if (mkdir(curpath, 0700) < 0) {
|
||||
fprintf(stderr, "Failed to make directory %s\n", curpath);
|
||||
perror("");
|
||||
free(normal);
|
||||
return -1;
|
||||
}
|
||||
} else {
|
||||
fprintf(stderr, "Error statting directory %s\n", curpath);
|
||||
perror("");
|
||||
free(normal);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
// Continue to next path segment
|
||||
walk += n;
|
||||
}
|
||||
|
||||
free(normal);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
nullterminate(char **str, size_t *len)
|
||||
{
|
||||
if ((*str)[*len - 1] == '\0')
|
||||
return 0;
|
||||
|
||||
(*len)++;
|
||||
*str = (char*)realloc(*str, *len * sizeof(char));
|
||||
(*str)[*len - 1] = '\0';
|
||||
|
||||
return 0;
|
||||
}
|
||||
4
patch/ipc/util.h
Normal file
4
patch/ipc/util.h
Normal file
@ -0,0 +1,4 @@
|
||||
int normalizepath(const char *path, char **normal);
|
||||
int mkdirp(const char *path);
|
||||
int parentdir(const char *path, char **parent);
|
||||
int nullterminate(char **str, size_t *len);
|
||||
351
patch/ipc/yajl_dumps.c
Normal file
351
patch/ipc/yajl_dumps.c
Normal file
@ -0,0 +1,351 @@
|
||||
#include "yajl_dumps.h"
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
int
|
||||
dump_tag(yajl_gen gen, const char *name, const int tag_mask)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("bit_mask"); YINT(tag_mask);
|
||||
YSTR("name"); YSTR(name);
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_tags(yajl_gen gen, int tags_len)
|
||||
{
|
||||
// clang-format off
|
||||
YARR(
|
||||
for (int i = 0; i < tags_len; i++)
|
||||
dump_tag(gen, tagicon(mons, i), 1 << i);
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_client(yajl_gen gen, Client *c)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("name"); YSTR(c->name);
|
||||
YSTR("tags"); YINT(c->tags);
|
||||
YSTR("window_id"); YINT(c->win);
|
||||
YSTR("monitor_number"); YINT(c->mon->num);
|
||||
|
||||
YSTR("geometry"); YMAP(
|
||||
YSTR("current"); YMAP (
|
||||
YSTR("x"); YINT(c->x);
|
||||
YSTR("y"); YINT(c->y);
|
||||
YSTR("width"); YINT(c->w);
|
||||
YSTR("height"); YINT(c->h);
|
||||
)
|
||||
YSTR("old"); YMAP(
|
||||
YSTR("x"); YINT(c->oldx);
|
||||
YSTR("y"); YINT(c->oldy);
|
||||
YSTR("width"); YINT(c->oldw);
|
||||
YSTR("height"); YINT(c->oldh);
|
||||
)
|
||||
)
|
||||
|
||||
YSTR("size_hints"); YMAP(
|
||||
YSTR("base"); YMAP(
|
||||
YSTR("width"); YINT(c->basew);
|
||||
YSTR("height"); YINT(c->baseh);
|
||||
)
|
||||
YSTR("step"); YMAP(
|
||||
YSTR("width"); YINT(c->incw);
|
||||
YSTR("height"); YINT(c->inch);
|
||||
)
|
||||
YSTR("max"); YMAP(
|
||||
YSTR("width"); YINT(c->maxw);
|
||||
YSTR("height"); YINT(c->maxh);
|
||||
)
|
||||
YSTR("min"); YMAP(
|
||||
YSTR("width"); YINT(c->minw);
|
||||
YSTR("height"); YINT(c->minh);
|
||||
)
|
||||
YSTR("aspect_ratio"); YMAP(
|
||||
YSTR("min"); YDOUBLE(c->mina);
|
||||
YSTR("max"); YDOUBLE(c->maxa);
|
||||
)
|
||||
)
|
||||
|
||||
YSTR("border_width"); YMAP(
|
||||
YSTR("current"); YINT(c->bw);
|
||||
YSTR("old"); YINT(c->oldbw);
|
||||
)
|
||||
|
||||
YSTR("states"); YMAP(
|
||||
YSTR("is_fixed"); YBOOL(c->isfixed);
|
||||
YSTR("is_floating"); YBOOL(c->isfloating);
|
||||
YSTR("is_urgent"); YBOOL(c->isurgent);
|
||||
YSTR("never_focus"); YBOOL(c->neverfocus);
|
||||
YSTR("old_state"); YBOOL(c->oldstate);
|
||||
YSTR("is_fullscreen"); YBOOL(c->isfullscreen);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_monitor(yajl_gen gen, Monitor *mon, int is_selected)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("master_factor"); YDOUBLE(mon->mfact);
|
||||
YSTR("num_master"); YINT(mon->nmaster);
|
||||
YSTR("num"); YINT(mon->num);
|
||||
YSTR("is_selected"); YBOOL(is_selected);
|
||||
|
||||
YSTR("monitor_geometry"); YMAP(
|
||||
YSTR("x"); YINT(mon->mx);
|
||||
YSTR("y"); YINT(mon->my);
|
||||
YSTR("width"); YINT(mon->mw);
|
||||
YSTR("height"); YINT(mon->mh);
|
||||
)
|
||||
|
||||
YSTR("window_geometry"); YMAP(
|
||||
YSTR("x"); YINT(mon->wx);
|
||||
YSTR("y"); YINT(mon->wy);
|
||||
YSTR("width"); YINT(mon->ww);
|
||||
YSTR("height"); YINT(mon->wh);
|
||||
)
|
||||
|
||||
YSTR("tagset"); YMAP(
|
||||
YSTR("current"); YINT(mon->tagset[mon->seltags]);
|
||||
YSTR("old"); YINT(mon->tagset[mon->seltags ^ 1]);
|
||||
)
|
||||
|
||||
YSTR("tag_state"); dump_tag_state(gen, mon->tagstate);
|
||||
|
||||
YSTR("clients"); YMAP(
|
||||
YSTR("selected"); YINT(mon->sel ? mon->sel->win : 0);
|
||||
YSTR("stack"); YARR(
|
||||
for (Client* c = mon->stack; c; c = c->snext)
|
||||
YINT(c->win);
|
||||
)
|
||||
YSTR("all"); YARR(
|
||||
for (Client* c = mon->clients; c; c = c->next)
|
||||
YINT(c->win);
|
||||
)
|
||||
)
|
||||
|
||||
YSTR("layout"); YMAP(
|
||||
YSTR("symbol"); YMAP(
|
||||
YSTR("current"); YSTR(mon->ltsymbol);
|
||||
YSTR("old"); YSTR(mon->lastltsymbol);
|
||||
)
|
||||
YSTR("address"); YMAP(
|
||||
YSTR("current"); YINT((uintptr_t)mon->lt[mon->sellt]);
|
||||
YSTR("old"); YINT((uintptr_t)mon->lt[mon->sellt ^ 1]);
|
||||
)
|
||||
)
|
||||
|
||||
YSTR("bar"); YMAP(
|
||||
YSTR("y"); YINT(mon->bar->by);
|
||||
YSTR("is_shown"); YBOOL(mon->showbar);
|
||||
YSTR("is_top"); YBOOL(mon->bar->topbar);
|
||||
YSTR("window_id"); YINT(mon->bar->win);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_monitors(yajl_gen gen, Monitor *mons, Monitor *selmon)
|
||||
{
|
||||
// clang-format off
|
||||
YARR(
|
||||
for (Monitor *mon = mons; mon; mon = mon->next) {
|
||||
if (mon == selmon)
|
||||
dump_monitor(gen, mon, 1);
|
||||
else
|
||||
dump_monitor(gen, mon, 0);
|
||||
}
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_layouts(yajl_gen gen, const Layout layouts[], const int layouts_len)
|
||||
{
|
||||
// clang-format off
|
||||
YARR(
|
||||
for (int i = 0; i < layouts_len; i++) {
|
||||
YMAP(
|
||||
// Check for a NULL pointer. The cycle layouts patch adds an entry at
|
||||
// the end of the layouts array with a NULL pointer for the symbol
|
||||
YSTR("symbol"); YSTR((layouts[i].symbol ? layouts[i].symbol : ""));
|
||||
YSTR("address"); YINT((uintptr_t)(layouts + i));
|
||||
)
|
||||
}
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_tag_state(yajl_gen gen, TagState state)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("selected"); YINT(state.selected);
|
||||
YSTR("occupied"); YINT(state.occupied);
|
||||
YSTR("urgent"); YINT(state.urgent);
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_tag_event(yajl_gen gen, int mon_num, TagState old_state,
|
||||
TagState new_state)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("tag_change_event"); YMAP(
|
||||
YSTR("monitor_number"); YINT(mon_num);
|
||||
YSTR("old_state"); dump_tag_state(gen, old_state);
|
||||
YSTR("new_state"); dump_tag_state(gen, new_state);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_client_focus_change_event(yajl_gen gen, Client *old_client,
|
||||
Client *new_client, int mon_num)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("client_focus_change_event"); YMAP(
|
||||
YSTR("monitor_number"); YINT(mon_num);
|
||||
YSTR("old_win_id"); old_client == NULL ? YNULL() : YINT(old_client->win);
|
||||
YSTR("new_win_id"); new_client == NULL ? YNULL() : YINT(new_client->win);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_layout_change_event(yajl_gen gen, const int mon_num,
|
||||
const char *old_symbol, const Layout *old_layout,
|
||||
const char *new_symbol, const Layout *new_layout)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("layout_change_event"); YMAP(
|
||||
YSTR("monitor_number"); YINT(mon_num);
|
||||
YSTR("old_symbol"); YSTR(old_symbol);
|
||||
YSTR("old_address"); YINT((uintptr_t)old_layout);
|
||||
YSTR("new_symbol"); YSTR(new_symbol);
|
||||
YSTR("new_address"); YINT((uintptr_t)new_layout);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_monitor_focus_change_event(yajl_gen gen, const int last_mon_num,
|
||||
const int new_mon_num)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("monitor_focus_change_event"); YMAP(
|
||||
YSTR("old_monitor_number"); YINT(last_mon_num);
|
||||
YSTR("new_monitor_number"); YINT(new_mon_num);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_focused_title_change_event(yajl_gen gen, const int mon_num,
|
||||
const Window client_id, const char *old_name,
|
||||
const char *new_name)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("focused_title_change_event"); YMAP(
|
||||
YSTR("monitor_number"); YINT(mon_num);
|
||||
YSTR("client_window_id"); YINT(client_id);
|
||||
YSTR("old_name"); YSTR(old_name);
|
||||
YSTR("new_name"); YSTR(new_name);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_client_state(yajl_gen gen, const ClientState *state)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("old_state"); YBOOL(state->oldstate);
|
||||
YSTR("is_fixed"); YBOOL(state->isfixed);
|
||||
YSTR("is_floating"); YBOOL(state->isfloating);
|
||||
YSTR("is_fullscreen"); YBOOL(state->isfullscreen);
|
||||
YSTR("is_urgent"); YBOOL(state->isurgent);
|
||||
YSTR("never_focus"); YBOOL(state->neverfocus);
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_focused_state_change_event(yajl_gen gen, const int mon_num,
|
||||
const Window client_id,
|
||||
const ClientState *old_state,
|
||||
const ClientState *new_state)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("focused_state_change_event"); YMAP(
|
||||
YSTR("monitor_number"); YINT(mon_num);
|
||||
YSTR("client_window_id"); YINT(client_id);
|
||||
YSTR("old_state"); dump_client_state(gen, old_state);
|
||||
YSTR("new_state"); dump_client_state(gen, new_state);
|
||||
)
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
dump_error_message(yajl_gen gen, const char *reason)
|
||||
{
|
||||
// clang-format off
|
||||
YMAP(
|
||||
YSTR("result"); YSTR("error");
|
||||
YSTR("reason"); YSTR(reason);
|
||||
)
|
||||
// clang-format on
|
||||
|
||||
return 0;
|
||||
}
|
||||
65
patch/ipc/yajl_dumps.h
Normal file
65
patch/ipc/yajl_dumps.h
Normal file
@ -0,0 +1,65 @@
|
||||
#ifndef YAJL_DUMPS_H_
|
||||
#define YAJL_DUMPS_H_
|
||||
|
||||
#include <string.h>
|
||||
#include <yajl/yajl_gen.h>
|
||||
|
||||
#define YSTR(str) yajl_gen_string(gen, (unsigned char *)str, strlen(str))
|
||||
#define YINT(num) yajl_gen_integer(gen, num)
|
||||
#define YDOUBLE(num) yajl_gen_double(gen, num)
|
||||
#define YBOOL(v) yajl_gen_bool(gen, v)
|
||||
#define YNULL() yajl_gen_null(gen)
|
||||
#define YARR(body) \
|
||||
{ \
|
||||
yajl_gen_array_open(gen); \
|
||||
body; \
|
||||
yajl_gen_array_close(gen); \
|
||||
}
|
||||
#define YMAP(body) \
|
||||
{ \
|
||||
yajl_gen_map_open(gen); \
|
||||
body; \
|
||||
yajl_gen_map_close(gen); \
|
||||
}
|
||||
|
||||
int dump_tag(yajl_gen gen, const char *name, const int tag_mask);
|
||||
|
||||
int dump_tags(yajl_gen gen, int tags_len);
|
||||
|
||||
int dump_client(yajl_gen gen, Client *c);
|
||||
|
||||
int dump_monitor(yajl_gen gen, Monitor *mon, int is_selected);
|
||||
|
||||
int dump_monitors(yajl_gen gen, Monitor *mons, Monitor *selmon);
|
||||
|
||||
int dump_layouts(yajl_gen gen, const Layout layouts[], const int layouts_len);
|
||||
|
||||
int dump_tag_state(yajl_gen gen, TagState state);
|
||||
|
||||
int dump_tag_event(yajl_gen gen, int mon_num, TagState old_state,
|
||||
TagState new_state);
|
||||
|
||||
int dump_client_focus_change_event(yajl_gen gen, Client *old_client,
|
||||
Client *new_client, int mon_num);
|
||||
|
||||
int dump_layout_change_event(yajl_gen gen, const int mon_num,
|
||||
const char *old_symbol, const Layout *old_layout,
|
||||
const char *new_symbol, const Layout *new_layout);
|
||||
|
||||
int dump_monitor_focus_change_event(yajl_gen gen, const int last_mon_num,
|
||||
const int new_mon_num);
|
||||
|
||||
int dump_focused_title_change_event(yajl_gen gen, const int mon_num,
|
||||
const Window client_id,
|
||||
const char *old_name, const char *new_name);
|
||||
|
||||
int dump_client_state(yajl_gen gen, const ClientState *state);
|
||||
|
||||
int dump_focused_state_change_event(yajl_gen gen, const int mon_num,
|
||||
const Window client_id,
|
||||
const ClientState *old_state,
|
||||
const ClientState *new_state);
|
||||
|
||||
int dump_error_message(yajl_gen gen, const char *reason);
|
||||
|
||||
#endif // YAJL_DUMPS_H_
|
||||
Loading…
Reference in New Issue
Block a user