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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser 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   PulseAudio 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 Lesser General Public License
  17   along with PulseAudio; 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 <stdio.h>
  27 #include <assert.h>
  28 #include <unistd.h>
  29
  30 #include <pulsecore/module.h>
  31 #include <pulsecore/iochannel.h>
  32 #include <pulsecore/cli.h>
  33 #include <pulsecore/sioman.h>
  34 #include <pulsecore/log.h>
  35 #include <pulsecore/modargs.h>
  36
  37 #include "module-cli-symdef.h"
  38
  39 PA_MODULE_AUTHOR("Lennart Poettering")
  40 PA_MODULE_DESCRIPTION("Command line interface")
  41 PA_MODULE_VERSION(PACKAGE_VERSION)
  42 PA_MODULE_USAGE("exit_on_eof=<exit daemon after EOF?>")
  43
  44 static const char* const valid_modargs[] = {
  45     "exit_on_eof",
  46     NULL
  47 };
  48
  49 static void eof_and_unload_cb(pa_cli*c, void *userdata) {
  50     pa_module *m = userdata;
  51
  52     assert(c);
  53     assert(m);
  54
  55     pa_module_unload_request(m);
  56 }
  57
  58 static void eof_and_exit_cb(pa_cli*c, void *userdata) {
  59     pa_module *m = userdata;
  60
  61     assert(c);
  62     assert(m);
  63
  64     m->core->mainloop->quit(m->core->mainloop, 0);
  65 }
  66
  67 int pa__init(pa_core *c, pa_module*m) {
  68     pa_iochannel *io;
  69     pa_modargs *ma;
  70     int exit_on_eof = 0;
  71
  72     assert(c);
  73     assert(m);
  74
  75     if (c->running_as_daemon) {
  76         pa_log_info(__FILE__": Running as daemon, refusing to load this module.");
  77         return 0;
  78     }
  79
  80     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
  81         pa_log(__FILE__": failed to parse module arguments.");
  82         goto fail;
  83     }
  84
  85     if (pa_modargs_get_value_boolean(ma, "exit_on_eof", &exit_on_eof) < 0) {
  86         pa_log(__FILE__": exit_on_eof= expects boolean argument.");
  87         goto fail;
  88     }
  89
  90     if (pa_stdio_acquire() < 0) {
  91         pa_log(__FILE__": STDIN/STDUSE already in use.");
  92         goto fail;
  93     }
  94
  95     io = pa_iochannel_new(c->mainloop, STDIN_FILENO, STDOUT_FILENO);
  96     assert(io);
  97     pa_iochannel_set_noclose(io, 1);
  98
  99     m->userdata = pa_cli_new(c, io, m);
 100     assert(m->userdata);
 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_core *c, pa_module*m) {
 117     assert(c);
 118     assert(m);
 119
 120     if (c->running_as_daemon == 0) {
 121         pa_cli_free(m->userdata);
 122         pa_stdio_release();
 123     }
 124 }