/*
* LyXServer monitor. To send command to a running instance of LyX
* and receive information from LyX.
*
* To build it type:
* > gcc -g server_monitor.c -o monitor -lforms -L/usr/X11/lib -lX11 -lm
* > ./monitor
* Before you run lyx uncomment the line "\serverpipe" from your
* ~/.lyx/lyxrc file, according with your home path.
*
* Created: 970531
* Copyright (C) 1997 Alejandro Aguilar Sierra ([email protected])
* Updated: 980104
* Copyright (C) 1998 Asger Alstrup ([email protected])
*/
/* Form definition file generated with fdesign. */
#include "forms.h"
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
int lyx_listen = 0;
int pipein=-1, pipeout=-1;
char pipename[100];
char const *clientname = "monitor";
/**** Forms and Objects ****/
typedef struct {
FL_FORM *server;
void *vdata;
long ldata;
FL_OBJECT *pipename;
FL_OBJECT *command;
FL_OBJECT *arg;
FL_OBJECT *info;
FL_OBJECT *client;
FL_OBJECT *submit;
FL_OBJECT *notify;
} FD_server;
enum { LS_DUMMY=1, LS_OPEN, LS_CLOSE, LS_SUBMIT };
static FD_server *fd_server;
void closepipe();
void server_cb(FL_OBJECT *ob, long data);
FD_server *create_form_server(void)
{
FL_OBJECT *obj;
FD_server *fdui = (FD_server *) fl_calloc(1, sizeof(*fdui));
fdui->server = fl_bgn_form(FL_NO_BOX, 620, 260);
obj = fl_add_box(FL_UP_BOX,0,0,620,260,"");
fdui->pipename = obj = fl_add_input(FL_NORMAL_INPUT,110,10,190,40,"Pipe name");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_callback(obj,server_cb,0);
fl_set_object_shortcut(obj,"#P",1);
fdui->client = obj = fl_add_input(FL_NORMAL_INPUT,410,10,190,40,"Client name");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_callback(obj,server_cb,0);
fl_set_object_shortcut(obj,"#N",1);
fdui->command = obj = fl_add_input(FL_NORMAL_INPUT,110,60,190,40,"Command");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_callback(obj,server_cb,0);
fl_set_object_shortcut(obj,"#C",1);
fdui->arg = obj = fl_add_input(FL_NORMAL_INPUT,410,60,190,40,"Argument");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_callback(obj,server_cb,0);
fl_set_object_shortcut(obj,"#A",1);
obj = fl_add_text(FL_NORMAL_TEXT,10,110,100,40,"Info");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lalign(obj,FL_ALIGN_RIGHT|FL_ALIGN_INSIDE);
fdui->info = obj = fl_add_text(FL_NORMAL_TEXT,110,110,490,40,"");
fl_set_object_boxtype(obj,FL_DOWN_BOX);
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lalign(obj,FL_ALIGN_LEFT|FL_ALIGN_INSIDE);
obj = fl_add_text(FL_NORMAL_TEXT,10,160,100,40,"Notify");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lalign(obj,FL_ALIGN_RIGHT|FL_ALIGN_INSIDE);
fdui->notify = obj = fl_add_text(FL_NORMAL_TEXT,110,160,490,40,"");
fl_set_object_boxtype(obj,FL_DOWN_BOX);
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lalign(obj,FL_ALIGN_LEFT|FL_ALIGN_INSIDE);
obj = fl_add_button(FL_NORMAL_BUTTON,10,210,140,40,"Open pipes");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lstyle(obj,FL_BOLD_STYLE);
fl_set_object_callback(obj,server_cb,LS_OPEN);
fl_set_object_shortcut(obj,"#O",1);
obj = fl_add_button(FL_NORMAL_BUTTON,160,210,140,40,"Close pipes");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lstyle(obj,FL_BOLD_STYLE);
fl_set_object_callback(obj,server_cb,LS_CLOSE);
fl_set_object_shortcut(obj,"#l",1);
fdui->submit = obj = fl_add_button(FL_NORMAL_BUTTON,310,210,170,40,"Submit Command");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lstyle(obj,FL_BOLD_STYLE);
fl_set_object_callback(obj,server_cb,LS_SUBMIT);
fl_set_object_shortcut(obj,"#S",1);
obj = fl_add_button(FL_NORMAL_BUTTON,490,210,120,40,"Done");
fl_set_object_lsize(obj,FL_NORMAL_SIZE);
fl_set_object_lstyle(obj,FL_BOLD_STYLE);
fl_set_object_shortcut(obj,"#D^[",1);
fl_end_form();
fdui->server->fdui = fdui;
return fdui;
}
/*---------------------------------------*/
void io_cb(int fd, void *data)
{
int n;
char s[255];
n = read(fd, &s[0], 200);
if (n>=0)
s[n] = 0;
fprintf(stderr, "monitor: Coming: %s\n", s);
if (strncmp(s, "LYXSRV:", 7)==0) {
if (strstr(s, "bye")) {
lyx_listen = 0;
fprintf(stderr, "monitor: LyX has closed connection!\n");
closepipe();
return;
}
if (strstr(s, "hello")) {
lyx_listen = 1;
fprintf(stderr, "monitor: LyX is listening!\n");
fl_set_object_lcol(fd_server->submit,FL_BLACK);
fl_activate_object(fd_server->submit);
}
}
if (s[0]=='I')
fl_set_object_label(fd_server->info, s);
else
fl_set_object_label(fd_server->notify, s);
}
void openpipe()
{
char buf[100];
clientname = fl_get_input(fd_server->client);
if (pipein==-1) {
char *pipename = strdup(fl_get_input(fd_server->pipename));
char s[255];
fprintf(stderr, "monitor: Opening pipes ");
strcpy(s, pipename);
strcat(s, ".in");
fprintf(stderr, "[%s] and ", s);
pipein = open(s, O_RDWR);
strcpy(s, pipename);
strcat(s, ".out");
fprintf(stderr, "[%s]\n", s);
pipeout = open(s, O_RDONLY|O_NONBLOCK);
fprintf(stderr, "monitor: Opened %d %d\n", pipein, pipeout);
if (pipein<0 || pipeout<0) {
perror("monitor: Couldn't open the pipes");
pipein = pipeout = -1;
return;
}
fl_add_io_callback(pipeout, FL_READ, io_cb, 0);
// greet LyX
sprintf(buf, "LYXSRV:%s:hello", clientname);
write(pipein, buf, strlen(buf));
free(pipename);
} else
fprintf(stderr, "monitor: Pipes already opened, close them first\n");
}
void closepipe()
{
char buf[100];
if (pipein==-1 && pipeout==-1) {
fprintf(stderr, "monitor: Pipes are not opened\n");
return;
}
if (pipein>=0) {
close(pipein);
}
if (pipeout>=0) {
if (lyx_listen) {
lyx_listen = 0;
/* Say goodbye */
sprintf(buf, "LYXSRV:%s:bye\n", clientname);
write(pipeout, buf, strlen(buf));
}
close(pipeout);
fl_remove_io_callback(pipeout, FL_READ, io_cb);
}
pipein = pipeout = -1;
fl_set_object_lcol(fd_server->submit,FL_INACTIVE);
fl_deactivate_object(fd_server->submit);
}
void submit()
{
char s[255];
const char *clientname = fl_get_input(fd_server->client);
const char *argument = fl_get_input(fd_server->arg);
const char *command = fl_get_input(fd_server->command);
sprintf(s, "LYXCMD:%s:%s:%s\n", clientname, command, argument);
fprintf(stderr, "monitor: command: %s\n", s);
if (pipein>=0)
write(pipein, s, strlen(s));
else
fprintf(stderr, "monitor: Pipe is not opened\n");
}
/* callbacks for form server */
void server_cb(FL_OBJECT *ob, long data)
{
switch (data) {
case 0: break;
case LS_OPEN:
openpipe();
break;
case LS_CLOSE:
closepipe();
break;
case LS_SUBMIT:
submit();
break;
case LS_DUMMY:
break;
}
}
int main(int argc, char *argv[])
{
fl_initialize(&argc, argv, 0, 0, 0);
fd_server = create_form_server();
strcpy(pipename, getenv("HOME"));
strcat(pipename, "/.lyxpipe"),
/* fill-in form initialization code */
fl_set_input(fd_server->pipename, pipename);
fl_set_input(fd_server->client, clientname);
fl_deactivate_object(fd_server->submit);
fl_set_object_lcol(fd_server->submit,FL_INACTIVE);
/* show the first form */
fl_show_form(fd_server->server,FL_PLACE_MOUSE,FL_FULLBORDER,"LyX Server Monitor");
fl_do_forms();
if (pipein != -1)
closepipe();
return 0;
}
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