144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/*
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* Copyright (c) 2014, 2015, 2016, 2017, 2022 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* display.c
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* Display server.
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*/
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#include <err.h>
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#include <locale.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 <unistd.h>
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#include "arrow.inc"
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#include "display.h"
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#include "framebuffer.h"
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#include "server.h"
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uint32_t arrow_buffer[48 * 48];
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struct framebuffer arrow_framebuffer = { 48, arrow_buffer, 48, 48 };
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static void ready(void)
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{
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const char* readyfd_env = getenv("READYFD");
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if ( !readyfd_env )
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return;
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int readyfd = atoi(readyfd_env);
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char c = '\n';
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write(readyfd, &c, 1);
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close(readyfd);
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unsetenv("READYFD");
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}
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static void compact_arguments(int* argc, char*** argv)
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{
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for ( int i = 0; i < *argc; i++ )
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{
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while ( i < *argc && !(*argv)[i] )
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{
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for ( int n = i; n < *argc; n++ )
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(*argv)[n] = (*argv)[n+1];
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(*argc)--;
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}
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}
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}
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int main(int argc, char* argv[])
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{
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for ( int i = 1; i < argc; i++ )
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{
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const char* arg = argv[i];
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if ( arg[0] != '-' || !arg[1] )
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continue;
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argv[i] = NULL;
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if ( !strcmp(arg, "--") )
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break;
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if ( arg[1] != '-' )
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{
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char c;
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while ( (c = *++arg) ) switch ( c )
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{
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default:
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errx(1, "unknown option -- '%c'", c);
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}
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}
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else
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errx(1, "unknown option: %s", arg);
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}
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compact_arguments(&argc, &argv);
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memcpy(arrow_buffer, arrow, sizeof(arrow));
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setlocale(LC_ALL, "");
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setvbuf(stdout, NULL, _IOLBF, 0);
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if ( getpgid(0) != getpid() )
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errx(1, "This program must be run in its own process group");
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struct display display;
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display_initialize(&display);
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struct server server;
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server_initialize(&server, &display);
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if ( setenv("DISPLAY_SOCKET", server.server_path, 1) < 0 )
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err(1, "setenv");
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ready();
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char* home_session = NULL;
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char** session_argv = NULL;
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if ( 1 < argc )
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session_argv = argv + 1;
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else
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{
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const char* home = getenv("HOME");
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if ( home && asprintf(&home_session, "%s/.displayrc", home) < 0 )
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err(1, "malloc");
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const char* session_path = NULL;
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if ( !access(home_session, F_OK) )
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session_path = home_session;
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else if ( !access("/etc/displayrc", F_OK) )
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session_path = "/etc/displayrc";
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else if ( !access("/etc/default/displayrc", F_OK) )
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session_path = "/etc/default/displayrc";
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if ( session_path )
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session_argv = (char**) (const char*[]) {session_path, NULL};
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}
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if ( session_argv )
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{
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pid_t pid = fork();
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if ( pid < 0 )
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warn("fork");
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else if ( pid == 0 )
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{
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execvp(session_argv[0], session_argv);
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warn("%s", session_argv[0]);
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_exit(127);
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}
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}
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free(home_session);
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server_mainloop(&server);
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return 0;
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}
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