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_USAGE("exit_on_eof=<exit daemon after EOF?>")
  45
  46 static const char* const valid_modargs[] = {
  47     "exit_on_eof",
  48     NULL
  49 };
  50
  51 static void eof_and_unload_cb(pa_cli*c, void *userdata) {
  52     pa_module *m = userdata;
  53
  54     pa_assert(c);
  55     pa_assert(m);
  56
  57     pa_module_unload_request(m);
  58 }
  59
  60 static void eof_and_exit_cb(pa_cli*c, void *userdata) {
  61     pa_module *m = userdata;
  62
  63     pa_assert(c);
  64     pa_assert(m);
  65
  66     m->core->mainloop->quit(m->core->mainloop, 0);
  67 }
  68
  69 int pa__init(pa_module*m) {
  70     pa_iochannel *io;
  71     pa_modargs *ma;
  72     int exit_on_eof = 0;
  73
  74     pa_assert(m);
  75
  76     if (m->core->running_as_daemon) {
  77         pa_log_info("Running as daemon, refusing to load this module.");
  78         return 0;
  79     }
  80
  81     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
  82         pa_log("failed to parse module arguments.");
  83         goto fail;
  84     }
  85
  86     if (pa_modargs_get_value_boolean(ma, "exit_on_eof", &exit_on_eof) < 0) {
  87         pa_log("exit_on_eof= expects boolean argument.");
  88         goto fail;
  89     }
  90
  91     if (pa_stdio_acquire() < 0) {
  92         pa_log("STDIN/STDUSE already in use.");
  93         goto fail;
  94     }
  95
  96     io = pa_iochannel_new(m->core->mainloop, STDIN_FILENO, STDOUT_FILENO);
  97     pa_iochannel_set_noclose(io, 1);
  98
  99     m->userdata = pa_cli_new(m->core, io, m);
 100
 101     pa_cli_set_eof_callback(m->userdata, exit_on_eof ? eof_and_exit_cb : eof_and_unload_cb, m);
 102
 103     pa_modargs_free(ma);
 104
 105     return 0;
 106
 107 fail:
 108
 109     if (ma)
 110         pa_modargs_free(ma);
 111
 112     return -1;
 113 }
 114
 115 void pa__done(pa_module*m) {
 116     pa_assert(m);
 117
 118     if (m->core->running_as_daemon == 0) {
 119         pa_cli_free(m->userdata);
 120         pa_stdio_release();
 121     }
 122 }