wm/src/wm.c

/*
The GPLv3 License (GPLv3)

Copyright (c) 2022 Akos Horvath

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "wm.h"
#include <X11/X.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/Xinerama.h>
#include <asm-generic/errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <assert.h>
#include "config.h"
#include "handler.h"
#include "client.h"
#include "util.h"

Monitor wm_monitor_open(Display *d, XineramaScreenInfo info)
{
    Monitor m = {
        .display = d,
        .info = info
    };

    return m;
}

void wm_monitors_open_all(Wm *wm, Display *d)
{
    DEBUG_PRINT("wm_monitors_open_all\n");
    int count;

    XineramaScreenInfo *xsi = XineramaQueryScreens(d, &count);
    if (!xsi) {
        printf("wm: Could not open display. Exiting.\n");
        exit(1);
    }
    
    wm->monitors = malloc(count * sizeof(Monitor));

    for (int i = 0; i < count; i++) {
        wm->monitors[i] = wm_monitor_open(d, xsi[i]);
        //TODO: cfg
        wm->monitors[i].wscount = 9;
        wm->monitors[i].workspaces = calloc(wm->monitors[i].wscount, sizeof(Workspace));
        wm->monitors[i].selws = 0;

        for (size_t j = 0; j < wm->monitors[i].wscount; j++) {
            Workspace *ws = &wm->monitors[i].workspaces[j];
            ws->index = j;
            ws->monitor = &wm->monitors[i];

            // TODO config
            snprintf(ws->name, WM_WS_NAME_LEN, "%ld", j);
            ws->tree = wm_treenode_new(NODE_CLIENT, NULL);
        }

        //wm->monitors[i].clients = &wm->root;
        wm->monitors[i].clients = NULL;
    }
    
    wm->smon = &wm->monitors[0];
    // wm->smon->clients = &wm->root;
    DEBUG_PRINT("smon width: %d\n", wm->smon->info.width);
}

Display* wm_connect_display()
{
    Display *d;
    if (!(d = XOpenDisplay(NULL)))
    {
        printf("wm: Could not open display. Exiting.\n");
        exit(1);
    }

    return d;
}

void wm_set_supported_atoms(Wm *wm)
{
    XChangeProperty(wm->display, wm->root.window,
        XInternAtom(wm->display, "_NET_NUMBER_OF_DESKTOPS", False), XA_CARDINAL,
        32, PropModeReplace, (unsigned char *) &wm->smon->wscount, 1);

    char *desktop_names[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9"};

    wm_client_set_atom(wm, &wm->root, "_NET_DESKTOP_NAMES",
                      (unsigned char*) desktop_names, XA_STRING, 9);

    Atom wm_supp[] = {
        XInternAtom(wm->display, "_NET_NUMBER_OF_DESKTOPS", False),
        XInternAtom(wm->display, "_NET_DESKTOP_GEOMETRY", False),
        XInternAtom(wm->display, "_NET_DESKTOP_VIEWPORT", False),
        XInternAtom(wm->display, "_NET_CURRENT_DESKTOP", False),
        XInternAtom(wm->display, "_NET_ACTIVE_WINDOW", False),
        XInternAtom(wm->display, "_NET_DESKTOP_NAMES", False),
    };

    XChangeProperty(wm->display, wm->root.window,
        XInternAtom(wm->display, "_NET_SUPPORTED", False), XA_ATOM, 32,
        PropModeReplace, (unsigned char *) &wm_supp, sizeof(wm_supp)/sizeof(long));
}

bool wm_window_is_dock(Wm *wm, Window w)
{
    // TODO: get atom new function
    unsigned char *prop_ret;
    Atom atom_ret;
    int format_ret;
    unsigned long nitems_ret;
    unsigned long bytes_remain_ret;
    int ret;

    ret = XGetWindowProperty(wm->display, w,
            XInternAtom(wm->display, "_NET_WM_WINDOW_TYPE", False), 0, (~0L), False,
            AnyPropertyType, &atom_ret,
            &format_ret, &nitems_ret, &bytes_remain_ret, &prop_ret);
    if (ret != Success || nitems_ret == 0) {
        fprintf(stderr, "wm: XGetWindowProperty failed\n");
        return false;
    }

    DEBUG_PRINT("XGetWindowProperty return values, window %d:\n", (int)w);
    // DEBUG_PRINT("actual atom return: %s\n", XGetAtomName(wm->display, atom_ret));
    DEBUG_PRINT("actual format return: %d\n", format_ret)
    DEBUG_PRINT("actual number of items return: %ld\n", nitems_ret)
    DEBUG_PRINT("bytes remaining: %ld\n", nitems_ret)
    //DEBUG_PRINT("property return dec: %d\n", prop_ret)
    for (size_t i = 0; i < nitems_ret; i++) {
    printf("property return str: %s\n",
            XGetAtomName(wm->display, ((Atom*)prop_ret)[i]));
        if (strcmp(XGetAtomName(wm->display, ((Atom*)prop_ret)[i]),
             "_NET_WM_WINDOW_TYPE_DOCK") == 0) {
            DEBUG_PRINT("%s", __func__)
            DEBUG_PRINT("returning true\n")
            return true;
        }
    }

    return false;
}

NodeType wm_split_to_nodetype(SplitMode mode)
{
    switch (mode) {
        case SPLIT_VERTICAL:
            return NODE_VERTICAL;
        case SPLIT_HORIZ:
            return NODE_HORIZONTAL;
        case SPLIT_TAB:
            return NODE_TAB;
        default:
            fprintf(stderr, "wm: unhandled split mode %d in %s, exiting.\n",
                    mode, __func__);
            abort();
    }
}

void wm_ws_tree_insert_client(Wm *wm, Workspace *ws, Client *client)
{
    DEBUG_PRINT("%s\n", __func__);
    int dock_y = 0;

    if (wm->dock != ULONG_MAX) {
        XWindowAttributes x;
        XGetWindowAttributes(wm->display, wm->dock, &x);

        dock_y = x.height;
    }

    if (wm_treenode_is_empty(&ws->tree) && ws->tree.client == NULL) {
        ws->tree.type = NODE_CLIENT;
        ws->tree.client = client;
        ws->tree.pos = (Rect) {
            .x = wm->config.border_width, .y = wm->config.border_width + dock_y ,
            .w = ws->monitor->info.width - wm->config.border_width*2,
            .h = ws->monitor->info.height - wm->config.border_width*2 - dock_y,
        };
        return;
    }

    TreeNode *focused_node = wm_treenode_ptr_find_focused_client_node(&ws->tree);
    assert(focused_node);

    Client *old_client = focused_node->client;
    focused_node->type = wm_split_to_nodetype(ws->split);

    TreeNode child1 = wm_treenode_new(NODE_CLIENT, focused_node);
    TreeNode child2 = wm_treenode_new(NODE_CLIENT, focused_node);

    wm_treenode_split_space(focused_node, &child1.pos, &child2.pos);
    child1.client = old_client;
    child2.client = client;

    wm_nodearray_push(&focused_node->children, child1);
    wm_nodearray_push(&focused_node->children, child2);
}

void wm_switch_ws(Wm *wm, size_t ws)
{
    if (ws > wm->smon->wscount)
        return;

    int wscc = 0;
    Client *c;

    PtrArray current_ws_clients = wm_treenode_find_client_nodes_ptr(
        &wm->smon->workspaces[wm->smon->selws].tree);

    for (size_t i = 0; i < current_ws_clients.size; i++) {
        c = ((TreeNode**)current_ws_clients.ptrs)[i]->client;
        assert(c);
        if (c->ws->index == wm->smon->selws) {
            DEBUG_PRINT("wm_switch_ws hide client selws: %ld\n", c->ws->index)
            wm_client_hide(wm, c);
        }
    }

    wm->smon->selws = ws;

    wm_client_set_atom(wm, &wm-> root, "_NET_CURRENT_DESKTOP",
                       (unsigned char*) &(ws), XA_CARDINAL, 1);

    PtrArray switch_ws_clients = wm_treenode_find_client_nodes_ptr(
        &wm->smon->workspaces[wm->smon->selws].tree);

    for (size_t i = 0; i < switch_ws_clients.size; i++) {
        c = ((TreeNode**)switch_ws_clients.ptrs)[i]->client;
        if (c->ws->index == wm->smon->selws) {
            wscc++;
            wm_client_show(wm, c);
        }
    }

    DEBUG_PRINT("wm_switch_ws focused ws client count: %d\n", wscc);

    wm_ptrarray_free(&current_ws_clients);
    wm_ptrarray_free(&switch_ws_clients);
}

// TODO maybe x,y is not 0, because of bar
void wm_mstack(Wm *wm, Monitor *m)
{
    DEBUG_PRINT("%s\n", __func__)
    RETURN_IF_NULL(m);

    Client *c;
    XWindowChanges ch;
    int cc_sws = 0;
    int n = 0;
    int sx = 0;
    int sy = 0;
    XEvent e;

    unsigned int value_mask = CWX | CWY | CWWidth | CWHeight;

    // TODO: function

    // FIXME: &root probably wrong
   
    if (wm->dock != ULONG_MAX) {
        XWindowAttributes x;
        XGetWindowAttributes(wm->display, wm->dock, &x);

        sx = x.x;
        sy = x.y+x.height;

        DEBUG_PRINT("%s dock sx x: %d y: %d\n", __func__, sx, sy)
    }

    for (c = m->clients; c; c = c->next) {
        if (c->ws->index == m->selws && c != &wm->root && !c->is_floating) {
            cc_sws++;
        }
    }

    DEBUG_PRINT("mstack cc_sws: %d\n", cc_sws)

    if (cc_sws <= 0) {
        DEBUG_PRINT("mstack cc_sws <= 0, returning\n")
        return;
    }

    // dynamic
    if (cc_sws == 1) {
        for (c = m->clients; c; c = c->next) {
            if (c->ws->index == m->selws && c != &wm->root)
                break;   
        }
        c->x = 0;
        c->y = sy;
        c->w = wm->smon->info.width-wm->config.border_width*2;
        c->h = (wm->smon->info.height-wm->config.border_width*2)-sy;
        ch = wm_client_to_xwchanges(c);
        DEBUG_PRINT("mstack client: %p\n", c);
        // XGetWMName(wm->display, c->window, &xt);
        DEBUG_PRINT("mstack window id: %ld\n", c->window);
        // DEBUG_PRINT("mstack wm_name: %s\n", xt.value)
        // DEBUG_PRINT("mstack client width: %d\n", ch.width)
        // DEBUG_PRINT("mstack client height: %d\n", ch.height)

        XConfigureWindow(wm->display, c->window, value_mask, &ch);
        wm_client_show(wm, c);
        wm_client_focus(wm, c);
    }
    else {
        // FIXME not working with dock
        for (c = m->clients; c; c = c->next) {
            if (c->ws->index == m->selws && c->window != wm->root.window && !c->is_floating) {
                if (n == 0) {
                    c->x = 0;
                    c->y = sy;
                    c->w = m->info.width*wm->config.ms_p-wm->config.border_width*2;
                    c->h = (m->info.height-wm->config.border_width*2)-sy;
                } else  {
                    c->x = (m->info.width*wm->config.ms_p);
                    c->y = ((n-1)*m->info.height/(cc_sws-1))+sy;
                    c->w = (m->info.width - m->info.width*wm->config.ms_p) - 
                            wm->config.border_width*2;
                    c->h = ((m->info.height)/(cc_sws-1)-wm->config.border_width*2);
                }
                n++;
                ch = wm_client_to_xwchanges(c);

                // TODO store wm name when client is created

                // FIXME vv RUNTIME MALLOC ABORT vv
                //XGetWMName(wm->display, c->window, &xt);
                DEBUG_PRINT("mstack client: %p\n", c);
                DEBUG_PRINT("mstack window id: %ld\n", c->window);
                // DEBUG_PRINT("mstack wm_name: %s\n", xt.value)
                // DEBUG_PRINT("mstack client x: %d ", ch.x)
                // DEBUG_PRINT("y: %d\n", ch.y)
                // DEBUG_PRINT("mstack client width: %d ", ch.width)
                // DEBUG_PRINT("height: %d\n", ch.height)

                XConfigureWindow(wm->display, c->window, value_mask, &ch);
                wm_client_show(wm, c);
                
                DEBUG_PRINT("%s %d. client next: %p\n", __func__, n, c->next)

                if (c->next == NULL)
                {
                    wm_client_focus(wm, c);
                }
            }
        }
    }


    DEBUG_PRINT("%s end\n", __func__)
    XSync(wm->display, False);
    while(XCheckMaskEvent(wm->display, EnterWindowMask, &e));

    wm_monitor_clients_border(wm, m);
}

void wm_layout(Wm *wm, Monitor *m)
{
    RETURN_IF_NULL(m);
    size_t i;

    DEBUG_PRINT("%s\n", __func__);

    Workspace *ws = &m->workspaces[m->selws];
    PtrArray clients = wm_treenode_find_client_nodes_ptr(&ws->tree);
    if (clients.size == 0)
        goto ret;

    for (i = 0; i < clients.size; i++) {
        TreeNode *node = clients.ptrs[i];
        Client *client = node->client;
        assert(client);

        client->x = node->pos.x;
        client->y = node->pos.y;
        client->w = node->pos.w;
        client->h = node->pos.h;

        unsigned int value_mask = CWX | CWY | CWWidth | CWHeight;
        XWindowChanges xwc = wm_client_to_xwchanges((client));
        XConfigureWindow(wm->display, client->window, value_mask, &xwc);
        wm_client_show(wm, client);
    }

    wm_client_focus(wm, ((TreeNode*)clients.ptrs[0])->client);

    XEvent e;
    XSync(wm->display, False);
    while(XCheckMaskEvent(wm->display, EnterWindowMask, &e));

    wm_monitor_clients_border(wm, m);

ret:
    wm_ptrarray_free(&clients);
}

Client *wm_get_last_client(Wm *wm, Monitor m)
{
    Client *c = m.clients;

    if (c == NULL)
        return NULL;
    
    while (c->next != NULL)
        c = c->next;

    return c;
}

void wm_mainloop(Wm *wm)
{
    // int s = DefaultScreen(wm->display);
    // Window w = XCreateSimpleWindow(wm->display, root.window, 10, 10, 300, 300,
    //            2, WhitePixel(wm->display, s), BlackPixel(wm->display, s));

    // XSelectInput(wm->display, w, KeyPressMask | KeyReleaseMask);
    // XMapWindow(wm->display, w);


    struct sockaddr s;
    socklen_t t = 108;
    getsockname(wm->socket_fd, &s, &t);

    // int accepted_socket;
    // char *buffer;


       //  accepted_socket = accept(wm->socket_fd, &s, &t);
       //  if (accepted_socket == -1) {
       //      if (errno == EAGAIN || errno == EWOULDBLOCK) {
       //          // fprintf(stderr, 
       //          //     "wm: accept failed, no waiting connections are present\n");
       //      } else {
       //          fprintf(stderr, "wm: accept failed\n");
       //      }
       //  }
       //  else {
       //      DEBUG_PRINT("accept success\n")
       //      len = recv(accepted_socket, buffer, 100, 0);
       //      if (len != -1) {
       //          DEBUG_PRINT("got %d bytes:", len)
       //          for (int i = 0; i < len; i++)
       //              DEBUG_PRINT("%c", buffer[i])
       //          DEBUG_PRINT("\n")
       //      } else {
       //          fprintf(stderr, "wm: recv failed\n");
       //          fprintf(stderr, "errno: %d\n", errno);
       //      }
       //  }
    while (wm->running) {
        XEvent e;
        XNextEvent(wm->display, &e);

        switch (e.type) {
            case CreateNotify:
                wm_create_handler(wm, e.xcreatewindow);
                break;
            case DestroyNotify:
                wm_destroy_handler(wm, e.xdestroywindow);
                break;
            case ReparentNotify:
                wm_reparent_handler(e.xreparent);
                break;
            case ConfigureRequest:
                wm_configure_handler(wm, e.xconfigurerequest);
                break;
            case KeyRelease:
                wm_keyrelease_handler(e.xkey);
                break;
            case KeyPress:
                wm_keypress_handler(wm, e.xkey);
                break;
            case MotionNotify:
                wm_motion_handler(wm, e.xmotion);
                break;
            case FocusIn:
                break;
            case FocusOut:
                break;
            case EnterNotify:
                DEBUG_PRINT("pointer entered window: %d\n",
                            (int)e.xcrossing.window);
                if (wm->config.focus_on_motion)
                    wm_client_focus(wm, wm_client_find(wm, e.xcrossing.window));
                break;
            case LeaveNotify:
                DEBUG_PRINT("pointer left window: %d\n",
                            (int)e.xcrossing.window);
                break;
            case ConfigureNotify:
                DEBUG_PRINT("ConfigureNotify: %d\n", (int)e.xconfigure.window)
                break;
            case MapRequest:
                DEBUG_PRINT("MapRequest: %d\n", (int)e.xmaprequest.window)
                wm_maprequest_handler(wm, e.xmaprequest);
                break;
            default:
                DEBUG_PRINT("default: %d\n", e.type);
        }
    }
}

void wm_init(Wm *wm)
{
    XSetWindowAttributes xa;
    Display *d;

    signal(SIGINT, wm_sigint_handler);

    wm->config = (Config) {0};
    wm_cfg_init_def(&wm->config);

    char path[PATH_MAX] = {0};
    const char* file = "/.config/wm.conf";
    strncat(path, getenv("HOME"), PATH_MAX - 1);
    strncat(path, file, (PATH_MAX - strlen(file)) - 1);

    ConfigFile configfile = {0};
    wm_configfile_init(&configfile, path);
    wm_configfile_read(&configfile, &wm->config);

    DEBUG_PRINT("wm_init\n")
    DEBUG_PRINT("pid: %ld\n", ((long)getpid()))
    d = wm_connect_display();
    wm->display = d;
    wm_monitors_open_all(wm, d);

    char *display_string = DisplayString(wm->display);
    setenv("DISPLAY", display_string, 1);

    // TODO: only testing
    // wm_socket_init();

    wm->root.window = XRootWindow(wm->display, DefaultScreen(wm->display));

    DEBUG_PRINT("root window: %ld\n", wm->root.window);

    XSync(d, false);

    xa.event_mask = StructureNotifyMask | StructureNotifyMask |
                    SubstructureNotifyMask | SubstructureRedirectMask |
                    ButtonPressMask | PropertyChangeMask;

    XChangeWindowAttributes(wm->display, wm->root.window, CWEventMask, &xa);
    XSelectInput(wm->display, wm->root.window, xa.event_mask);

    // DEBUG_PRINT("root window id: %d\n", (root.window))

    // XUngrabKey(wm->display, AnyKey, AnyModifier, root.window);

    wm_grab_keys(wm);

    //XSetErrorHandler(&wm_other_wm_handler);
    
    // if (wm->other_wm) {
    //     printf("wm: Detected other window manager. Exiting.\n");
    //     exit(1);
    // }
   
    wm_set_supported_atoms(wm);

    //XSetErrorHandler(&wm_xerror_handler);

    wm->dock = ULONG_MAX;

    wm->running = true;
    wm_mainloop(wm);

    wm_configfile_free(&configfile);
    wm_exit(wm);
}

void wm_exit(Wm *wm)
{
    DEBUG_PRINT("%s\n", __func__);
    Client *c;

    XUngrabKey(wm->display, AnyKey, AnyModifier, wm->root.window);

    // todo add clients to root client linked list
    for (c = wm->smon->clients; c; c = c->next) {
        XKillClient(wm->display, c->window);
    }
    for (c = wm->smon->clients; c; c = c->next) {
        wm_client_free(wm, c);
    }

    DEBUG_PRINT("%s1\n", __func__);
    XCloseDisplay(wm->display);
    exit(EXIT_SUCCESS);
}

void wm_grab_keys(Wm *wm)
{
    RETURN_IF_NULL(wm->config.keybinds)
    Keybind k;

    // from dwm
    {
        int i, j;
        XModifierKeymap *modmap;

        unsigned int numlockmask = 0;
        modmap = XGetModifierMapping(wm->display);
        for (i = 0; i < 8; i++)
            for (j = 0; j < modmap->max_keypermod; j++)
                if (modmap->modifiermap[i * modmap->max_keypermod + j]
                    == XKeysymToKeycode(wm->display, XK_Num_Lock))
                    numlockmask = (1 << i);
        XFreeModifiermap(modmap);
    }

    // from dwm
    unsigned int modifiers[] = { 0, LockMask, 0|LockMask };

    XUngrabKey(wm->display, AnyKey, AnyModifier, wm->root.window);

    for (int i = 0; i < wm->config.kb_count; i++) {
        k = wm->config.keybinds[i];
        for (int j = 0; j < 3; j++)
            XGrabKey(wm->display, XKeysymToKeycode(wm->display, k.keysym),
                    k.mask | modifiers[j], wm->root.window, True, GrabModeAsync,
                    GrabModeAsync);
    }
}

void wm_kb_spawn(Wm *wm, Arg *args)
{
    RETURN_IF_NULL(args)
    RETURN_IF_NULL(args->sl)

    DEBUG_PRINT("args sl 1: %s\n", args->sl[args->count-1])
    DEBUG_PRINT("args sl 0: %s\n", args->sl[0])
    DEBUG_PRINT("args count: %d\n", args->count)

    if (args->sl[args->count-1] != NULL) {
        fprintf(stderr, "%s recieved non null-terminated args. Returning\n",
                __func__);
    }

    if (fork() == 0) {
        if (wm->display)
            close(ConnectionNumber(wm->display));
        setsid();
        execvp(args->sl[0], &(args->sl[1]));

        exit(0);
    }
}

void wm_kb_exit(Wm* wm, Arg *args)
{
    wm->running = false;
}

void wm_kb_kill(Wm *wm, Arg *args)
{
    Client *c;

    c = wm_client_get_focused(wm);
    RETURN_IF_NULL(c)

    wm_client_kill(wm, c);
}

void wm_kb_switch_ws(Wm *wm, Arg *args)
{
    RETURN_IF_NULL(args)

    wm_switch_ws(wm, args->i);
}

void wm_kb_focus_dir(Wm *wm, Arg *args)
{
    Client *c;
    RETURN_IF_NULL(args)
    
    c = wm_client_get_focused(wm);

    wm_client_focus_dir(wm, c, args->i);
}

void wm_kb_switch_split_mode(Wm *wm, Arg *args)
{
    RETURN_IF_NULL(args)

    wm->smon->workspaces[wm->smon->selws].split = args->i;
}

struct sockaddr wm_socket_init(Wm *wm)
{
    struct sockaddr_un sock_addr;
    int ret;

    ret = wm->socket_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0);

    if (ret == -1) {
        fprintf(stderr, "wm: could not create socket. Exiting.\n");
        exit(EXIT_FAILURE);
    }

    sock_addr.sun_family = AF_UNIX;

    snprintf(sock_addr.sun_path, sizeof(sock_addr.sun_path),
             "/tmp/wm_socket_%c", DisplayString(wm->display)[1]);

    ret = bind(wm->socket_fd, (struct sockaddr *) &sock_addr, sizeof(sock_addr));
    
    if (ret == -1) {
        fprintf(stderr, "wm: could not bind to socket. Exiting.\n");
        exit(EXIT_FAILURE);
    }

    ret = listen(wm->socket_fd, 512);

    if (ret == -1) {
        fprintf(stderr, "wm: could not listen to socket. Exiting.\n");
        exit(EXIT_FAILURE);
    }
}

void wm_socket_cleanup(Wm *wm)
{
    struct sockaddr s;
    socklen_t t = 108;
    getsockname(wm->socket_fd, &s, &t);
    DEBUG_PRINT("socket cleanup path: %s\n", s.sa_data)
    remove(s.sa_data);
}

void wm_sigint_handler(Wm *wm, int signum)
{
    wm_socket_cleanup(wm);
    exit(1);
}

// TODO: maybe move some parts to wmc
void wm_settings_message_parse(Wm *wm, char *c, int len)
{
    if (len <= 0)
        return;

    int op; /* 0 = set, 1 = get */
    size_t i = 0;
    char ret[50];
    char *token;
    char tokens[20][50];
    char *settings[] = {"border-width", "border-color", "focused-border-color",
                        "msfact", "focus-on-motion"};

    while((token = strtok(c, " ")) != NULL) {
        DEBUG_PRINT("message_parse token: %s\n", token)
        strncpy(tokens[i], token, 50);
    }

    if (strcmp(tokens[1], "set") == 0) {
        op = 0;
    } else if (strcmp(c, "get") == 0) {
        op = 1;
    } else {
        return;
    }

    for (i = 0; i < sizeof(settings)/sizeof(char*); i++) {
        if (strcmp(tokens[1], settings[i])) {
            if (op == 1) {
                // wm_settings_get(settings[i], &ret);
            } else {
                // wm_settings_set(settings[i]);
            }
        }
    }
}