code.delx.au - pulseaudio/blob - src/modules/module-cli.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <unistd.h>
  30
  31 #include <pulsecore/module.h>
  32 #include <pulsecore/iochannel.h>
  33 #include <pulsecore/cli.h>
  34 #include <pulsecore/sioman.h>
  35 #include <pulsecore/log.h>
  36 #include <pulsecore/modargs.h>
  37 #include <pulsecore/macro.h>
  38
  39 #include "module-cli-symdef.h"
  40
  41 PA_MODULE_AUTHOR("Lennart Poettering");
  42 PA_MODULE_DESCRIPTION("Command line interface");
  43 PA_MODULE_VERSION(PACKAGE_VERSION);
  44 PA_MODULE_LOAD_ONCE(TRUE);
  45 PA_MODULE_USAGE("exit_on_eof=<exit daemon after EOF?>");
  46
  47 static const char* const valid_modargs[] = {
  48     "exit_on_eof",
  49     NULL
  50 };
  51
  52 static void eof_and_unload_cb(pa_cli*c, void *userdata) {
  53     pa_module *m = userdata;
  54
  55     pa_assert(c);
  56     pa_assert(m);
  57
  58     pa_module_unload_request(m);
  59 }
  60
  61 static void eof_and_exit_cb(pa_cli*c, void *userdata) {
  62     pa_module *m = userdata;
  63
  64     pa_assert(c);
  65     pa_assert(m);
  66
  67     m->core->mainloop->quit(m->core->mainloop, 0);
  68 }
  69
  70 int pa__init(pa_module*m) {
  71     pa_iochannel *io;
  72     pa_modargs *ma;
  73     int exit_on_eof = 0;
  74
  75     pa_assert(m);
  76
  77     if (m->core->running_as_daemon) {
  78         pa_log_info("Running as daemon, refusing to load this module.");
  79         return 0;
  80     }
  81
  82     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
  83         pa_log("failed to parse module arguments.");
  84         goto fail;
  85     }
  86
  87     if (pa_modargs_get_value_boolean(ma, "exit_on_eof", &exit_on_eof) < 0) {
  88         pa_log("exit_on_eof= expects boolean argument.");
  89         goto fail;
  90     }
  91
  92     if (pa_stdio_acquire() < 0) {
  93         pa_log("STDIN/STDUSE already in use.");
  94         goto fail;
  95     }
  96
  97     io = pa_iochannel_new(m->core->mainloop, STDIN_FILENO, STDOUT_FILENO);
  98     pa_iochannel_set_noclose(io, 1);
  99
 100     m->userdata = pa_cli_new(m->core, io, m);
 101
 102     pa_cli_set_eof_callback(m->userdata, exit_on_eof ? eof_and_exit_cb : eof_and_unload_cb, m);
 103
 104     pa_modargs_free(ma);
 105
 106     return 0;
 107
 108 fail:
 109
 110     if (ma)
 111         pa_modargs_free(ma);
 112
 113     return -1;
 114 }
 115
 116 void pa__done(pa_module*m) {
 117     pa_assert(m);
 118
 119     if (m->core->running_as_daemon == 0) {
 120         pa_cli_free(m->userdata);
 121         pa_stdio_release();
 122     }
 123 }