code.delx.au - pulseaudio/blob - polyp/main.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <unistd.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <signal.h>
  32 #include <stddef.h>
  33 #include <assert.h>
  34 #include <ltdl.h>
  35 #include <memblock.h>
  36
  37 #include "core.h"
  38 #include "mainloop.h"
  39 #include "module.h"
  40 #include "mainloop-signal.h"
  41 #include "cmdline.h"
  42 #include "cli-command.h"
  43 #include "util.h"
  44 #include "sioman.h"
  45 #include "xmalloc.h"
  46
  47 static struct pa_mainloop *mainloop;
  48
  49 static void exit_signal_callback(void *id, int sig, void *userdata) {
  50     struct pa_mainloop_api* m = pa_mainloop_get_api(mainloop);
  51     m->quit(m, 1);
  52     fprintf(stderr, __FILE__": got signal.\n");
  53 }
  54
  55 static void aux_signal_callback(void *id, int sig, void *userdata) {
  56     struct pa_core *c = userdata;
  57     assert(c);
  58     pa_module_load(c, sig == SIGUSR1 ? "module-cli" : "module-cli-protocol-unix", NULL);
  59 }
  60
  61 static void close_pipe(int p[2]) {
  62     if (p[0] != -1)
  63         close(p[0]);
  64     if (p[1] != -1)
  65         close(p[1]);
  66     p[0] = p[1] = -1;
  67 }
  68
  69 int main(int argc, char *argv[]) {
  70     struct pa_core *c;
  71     struct pa_cmdline *cmdline = NULL;
  72     struct pa_strbuf *buf = NULL;
  73     char *s;
  74     int r, retval = 1;
  75     int daemon_pipe[2] = { -1, -1 };
  76
  77     if (!(cmdline = pa_cmdline_parse(argc, argv))) {
  78         fprintf(stderr, __FILE__": failed to parse command line.\n");
  79         goto finish;
  80     }
  81
  82     if (cmdline->help) {
  83         pa_cmdline_help(argv[0]);
  84         retval = 0;
  85         goto finish;
  86     }
  87
  88     if (cmdline->daemonize) {
  89         pid_t child;
  90
  91         if (pa_stdio_acquire() < 0) {
  92             fprintf(stderr, __FILE__": failed to acquire stdio.\n");
  93             goto finish;
  94         }
  95
  96         if (pipe(daemon_pipe) < 0) {
  97             fprintf(stderr, __FILE__": failed to create pipe.\n");
  98             goto finish;
  99         }
 100
 101         if ((child = fork()) < 0) {
 102             fprintf(stderr, __FILE__": fork() failed: %s\n", strerror(errno));
 103             goto finish;
 104         }
 105
 106         if (child != 0) {
 107             /* Father */
 108
 109             close(daemon_pipe[1]);
 110             daemon_pipe[1] = -1;
 111
 112             if (pa_loop_read(daemon_pipe[0], &retval, sizeof(retval)) != sizeof(retval)) {
 113                 fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
 114                 retval = 1;
 115             }
 116
 117             goto finish;
 118         }
 119
 120         close(daemon_pipe[0]);
 121         daemon_pipe[0] = -1;
 122
 123         setsid();
 124         setpgrp();
 125     }
 126
 127     r = lt_dlinit();
 128     assert(r == 0);
 129 #ifdef DLSEARCHDIR
 130 /*    lt_dladdsearchdir(DLSEARCHDIR);*/
 131 #endif
 132
 133     mainloop = pa_mainloop_new();
 134     assert(mainloop);
 135
 136     r = pa_signal_init(pa_mainloop_get_api(mainloop));
 137     assert(r == 0);
 138     pa_signal_register(SIGINT, exit_signal_callback, NULL);
 139     signal(SIGPIPE, SIG_IGN);
 140
 141     c = pa_core_new(pa_mainloop_get_api(mainloop));
 142     assert(c);
 143
 144     pa_signal_register(SIGUSR1, aux_signal_callback, c);
 145     pa_signal_register(SIGUSR2, aux_signal_callback, c);
 146
 147     buf = pa_strbuf_new();
 148     assert(buf);
 149     r = pa_cli_command_execute(c, cmdline->cli_commands, buf, &cmdline->fail, &cmdline->verbose);
 150     fprintf(stderr, s = pa_strbuf_tostring_free(buf));
 151     pa_xfree(s);
 152
 153     if (r < 0 && cmdline->fail) {
 154         fprintf(stderr, __FILE__": failed to initialize daemon.\n");
 155         if (cmdline->daemonize)
 156             pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
 157     } else if (!c->modules || pa_idxset_ncontents(c->modules) == 0) {
 158         fprintf(stderr, __FILE__": daemon startup without any loaded modules, refusing to work.\n");
 159         if (cmdline->daemonize)
 160             pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
 161     } else {
 162         retval = 0;
 163         if (cmdline->daemonize)
 164             pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
 165         fprintf(stderr, __FILE__": mainloop entry.\n");
 166         if (pa_mainloop_run(mainloop, &retval) < 0)
 167             retval = 1;
 168         fprintf(stderr, __FILE__": mainloop exit.\n");
 169     }
 170
 171     pa_core_free(c);
 172
 173     pa_signal_done();
 174     pa_mainloop_free(mainloop);
 175
 176     lt_dlexit();
 177
 178 finish:
 179
 180     if (cmdline)
 181         pa_cmdline_free(cmdline);
 182
 183     close_pipe(daemon_pipe);
 184
 185     return retval;
 186 }