code.delx.au - pulseaudio/blob - src/daemon/dumpmodules.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2.1 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include <ltdl.h>
  30
  31 #include <pulse/util.h>
  32
  33 #include <pulsecore/core-util.h>
  34 #include <pulsecore/i18n.h>
  35 #include <pulsecore/macro.h>
  36 #include <pulsecore/modinfo.h>
  37
  38 #include "dumpmodules.h"
  39
  40 #define PREFIX "module-"
  41
  42 static void short_info(const char *name, const char *path, pa_modinfo *i) {
  43     pa_assert(name);
  44     pa_assert(i);
  45
  46     printf("%-40s%s\n", name, i->description ? i->description : "n/a");
  47 }
  48
  49 static void long_info(const char *name, const char *path, pa_modinfo *i) {
  50     static int nl = 0;
  51     pa_assert(name);
  52     pa_assert(i);
  53
  54     if (nl)
  55         printf("\n");
  56
  57     nl = 1;
  58
  59     printf(_("Name: %s\n"), name);
  60
  61     if (!i->description && !i->version && !i->author && !i->usage)
  62         printf(_("No module information available\n"));
  63     else {
  64         if (i->version)
  65             printf(_("Version: %s\n"), i->version);
  66         if (i->description)
  67             printf(_("Description: %s\n"), i->description);
  68         if (i->author)
  69             printf(_("Author: %s\n"), i->author);
  70         if (i->usage)
  71             printf(_("Usage: %s\n"), i->usage);
  72         printf(_("Load Once: %s\n"), pa_yes_no(i->load_once));
  73         if (i->deprecated)
  74             printf(_("DEPRECATION WARNING: %s\n"), i->deprecated);
  75     }
  76
  77     if (path)
  78         printf(_("Path: %s\n"), path);
  79 }
  80
  81 static void show_info(const char *name, const char *path, void (*info)(const char *name, const char *path, pa_modinfo*i)) {
  82     pa_modinfo *i;
  83
  84     pa_assert(name);
  85
  86     if ((i = pa_modinfo_get_by_name(path ? path : name))) {
  87         info(name, path, i);
  88         pa_modinfo_free(i);
  89     }
  90 }
  91
  92 static int is_preloaded(const char *name) {
  93     const lt_dlsymlist *l;
  94
  95     for (l = lt_preloaded_symbols; l->name; l++) {
  96         char buf[64], *e;
  97
  98         if (l->address)
  99             continue;
 100
 101         pa_snprintf(buf, sizeof(buf), "%s", l->name);
 102         if ((e = strrchr(buf, '.')))
 103             *e = 0;
 104
 105         if (pa_streq(name, buf))
 106             return 1;
 107     }
 108
 109     return 0;
 110 }
 111
 112 static int callback(const char *path, lt_ptr data) {
 113     const char *e;
 114     pa_daemon_conf *c = (data);
 115
 116     e = pa_path_get_filename(path);
 117
 118     if (strlen(e) <= sizeof(PREFIX)-1 || strncmp(e, PREFIX, sizeof(PREFIX)-1))
 119         return 0;
 120
 121     if (is_preloaded(e))
 122         return 0;
 123
 124     show_info(e, path, c->log_level >= PA_LOG_INFO ? long_info : short_info);
 125     return 0;
 126 }
 127
 128 void pa_dump_modules(pa_daemon_conf *c, int argc, char * const argv[]) {
 129     pa_assert(c);
 130
 131     if (argc > 0) {
 132         int i;
 133         for (i = 0; i < argc; i++)
 134             show_info(argv[i], NULL, long_info);
 135     } else {
 136         const lt_dlsymlist *l;
 137
 138         for (l = lt_preloaded_symbols; l->name; l++) {
 139             char buf[64], *e;
 140
 141             if (l->address)
 142                 continue;
 143
 144             if (strlen(l->name) <= sizeof(PREFIX)-1 || strncmp(l->name, PREFIX, sizeof(PREFIX)-1))
 145                 continue;
 146
 147             pa_snprintf(buf, sizeof(buf), "%s", l->name);
 148             if ((e = strrchr(buf, '.')))
 149                 *e = 0;
 150
 151             show_info(buf, NULL, c->log_level >= PA_LOG_INFO ? long_info : short_info);
 152         }
 153
 154         lt_dlforeachfile(NULL, callback, c);
 155     }
 156 }