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 <getopt.h>
  29 #include <stdio.h>
  30 #include <ltdl.h>
  31
  32 #include <pulse/util.h>
  33 #include <pulse/i18n.h>
  34
  35 #include <pulsecore/modinfo.h>
  36 #include <pulsecore/core-util.h>
  37 #include <pulsecore/macro.h>
  38
  39 #include "dumpmodules.h"
  40
  41 #define PREFIX "module-"
  42
  43 static void short_info(const char *name, const char *path, pa_modinfo *i) {
  44     pa_assert(name);
  45     pa_assert(i);
  46
  47     printf("%-40s%s\n", name, i->description ? i->description : "n/a");
  48 }
  49
  50 static void long_info(const char *name, const char *path, pa_modinfo *i) {
  51     static int nl = 0;
  52     pa_assert(name);
  53     pa_assert(i);
  54
  55     if (nl)
  56         printf("\n");
  57
  58     nl = 1;
  59
  60     printf(_("Name: %s\n"), name);
  61
  62     if (!i->description && !i->version && !i->author && !i->usage)
  63         printf(_("No module information available\n"));
  64     else {
  65         if (i->version)
  66             printf(_("Version: %s\n"), i->version);
  67         if (i->description)
  68             printf(_("Description: %s\n"), i->description);
  69         if (i->author)
  70             printf(_("Author: %s\n"), i->author);
  71         if (i->usage)
  72             printf(_("Usage: %s\n"), i->usage);
  73         printf(_("Load Once: %s\n"), pa_yes_no(i->load_once));
  74     }
  75
  76     if (path)
  77         printf(_("Path: %s\n"), path);
  78 }
  79
  80 static void show_info(const char *name, const char *path, void (*info)(const char *name, const char *path, pa_modinfo*i)) {
  81     pa_modinfo *i;
  82
  83     pa_assert(name);
  84
  85     if ((i = pa_modinfo_get_by_name(path ? path : name))) {
  86         info(name, path, i);
  87         pa_modinfo_free(i);
  88     }
  89 }
  90
  91 extern const lt_dlsymlist lt_preloaded_symbols[];
  92
  93 static int is_preloaded(const char *name) {
  94     const lt_dlsymlist *l;
  95
  96     for (l = lt_preloaded_symbols; l->name; l++) {
  97         char buf[64], *e;
  98
  99         if (l->address)
 100             continue;
 101
 102         pa_snprintf(buf, sizeof(buf), "%s", l->name);
 103         if ((e = strrchr(buf, '.')))
 104             *e = 0;
 105
 106         if (!strcmp(name, buf))
 107             return 1;
 108     }
 109
 110     return 0;
 111 }
 112
 113 static int callback(const char *path, lt_ptr data) {
 114     const char *e;
 115     pa_daemon_conf *c = (data);
 116
 117     e = pa_path_get_filename(path);
 118
 119     if (strlen(e) <= sizeof(PREFIX)-1 || strncmp(e, PREFIX, sizeof(PREFIX)-1))
 120         return 0;
 121
 122     if (is_preloaded(e))
 123         return 0;
 124
 125     show_info(e, path, c->log_level >= PA_LOG_INFO ? long_info : short_info);
 126     return 0;
 127 }
 128
 129 void pa_dump_modules(pa_daemon_conf *c, int argc, char * const argv[]) {
 130     pa_assert(c);
 131
 132     if (argc > 0) {
 133         int i;
 134         for (i = 0; i < argc; i++)
 135             show_info(argv[i], NULL, long_info);
 136     } else {
 137         const lt_dlsymlist *l;
 138
 139         for (l = lt_preloaded_symbols; l->name; l++) {
 140             char buf[64], *e;
 141
 142             if (l->address)
 143                 continue;
 144
 145             if (strlen(l->name) <= sizeof(PREFIX)-1 || strncmp(l->name, PREFIX, sizeof(PREFIX)-1))
 146                 continue;
 147
 148             pa_snprintf(buf, sizeof(buf), "%s", l->name);
 149             if ((e = strrchr(buf, '.')))
 150                 *e = 0;
 151
 152             show_info(buf, NULL, c->log_level >= PA_LOG_INFO ? long_info : short_info);
 153         }
 154
 155         lt_dlforeachfile(NULL, callback, c);
 156     }
 157 }