xK/xF.c

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/*
* xF.c: a toothless IRC client frontend
*
* Copyright (c) 2022, Přemysl Eric Janouch <p@janouch.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "config.h"
#define PROGRAM_NAME "xF"
#include "common.c"
#include "xC-proto.c"
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/XKBlib.h>
#include <X11/Xft/Xft.h>
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static struct
{
bool polling;
struct connector connector;
int socket;
}
g;
static void
on_connector_connecting (void *user_data, const char *address)
{
(void) user_data;
print_status ("connecting to %s...", address);
}
static void
on_connector_error (void *user_data, const char *error)
{
(void) user_data;
print_status ("connection failed: %s", error);
}
static void
on_connector_failure (void *user_data)
{
(void) user_data;
exit_fatal ("giving up");
}
static void
on_connector_connected (void *user_data, int socket, const char *hostname)
{
(void) user_data;
(void) hostname;
g.polling = false;
g.socket = socket;
}
static void
protocol_test (const char *host, const char *port)
{
struct poller poller = {};
poller_init (&poller);
connector_init (&g.connector, &poller);
g.connector.on_connecting = on_connector_connecting;
g.connector.on_error = on_connector_error;
g.connector.on_connected = on_connector_connected;
g.connector.on_failure = on_connector_failure;
connector_add_target (&g.connector, host, port);
g.polling = true;
while (g.polling)
poller_run (&poller);
connector_free (&g.connector);
struct str s = str_make ();
str_pack_u32 (&s, 0);
struct relay_command_message m = {};
m.data.hello.command = RELAY_COMMAND_HELLO;
m.data.hello.version = RELAY_VERSION;
if (!relay_command_message_serialize (&m, &s))
exit_fatal ("serialization failed");
uint32_t len = htonl (s.len - sizeof len);
memcpy (s.str, &len, sizeof len);
if (errno = 0, write (g.socket, s.str, s.len) != (ssize_t) s.len)
exit_fatal ("short send or error: %s", strerror (errno));
char buf[1 << 20] = "";
while (errno = 0, read (g.socket, &len, sizeof len) == sizeof len)
{
len = ntohl (len);
if (errno = 0, read (g.socket, buf, MIN (len, sizeof buf)) != len)
exit_fatal ("short read or error: %s", strerror (errno));
struct msg_unpacker r = msg_unpacker_make (buf, len);
struct relay_event_message m = {};
if (!relay_event_message_deserialize (&m, &r))
exit_fatal ("deserialization failed");
if (msg_unpacker_get_available (&r))
exit_fatal ("trailing data");
printf ("event: %d\n", m.data.event);
relay_event_message_free (&m);
}
exit_fatal ("short read or error: %s", strerror (errno));
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
int
main (int argc, char *argv[])
{
static const struct opt opts[] =
{
{ 'h', "help", NULL, 0, "display this help and exit" },
{ 'V', "version", NULL, 0, "output version information and exit" },
{ 0, NULL, NULL, 0, NULL }
};
struct opt_handler oh = opt_handler_make (argc, argv, opts,
"HOST:PORT", "X11 frontend for xC.");
int c;
while ((c = opt_handler_get (&oh)) != -1)
switch (c)
{
case 'h':
opt_handler_usage (&oh, stdout);
exit (EXIT_SUCCESS);
case 'V':
printf (PROGRAM_NAME " " PROGRAM_VERSION "\n");
exit (EXIT_SUCCESS);
default:
print_error ("wrong options");
opt_handler_usage (&oh, stderr);
exit (EXIT_FAILURE);
}
argc -= optind;
argv += optind;
if (argc != 1)
{
opt_handler_usage (&oh, stderr);
exit (EXIT_FAILURE);
}
opt_handler_free (&oh);
char *address = xstrdup (argv[0]);
const char *port = NULL, *host = tokenize_host_port (address, &port);
if (!port)
exit_fatal ("missing port number/service name");
// TODO: Actually implement an X11-based user interface.
protocol_test (host, port);
return 0;
}