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 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
  34 #include <pulsecore/modinfo.h>
  35 #include <pulsecore/core-util.h>
  36 #include <pulsecore/macro.h>
  37
  38 #include "dumpmodules.h"
  39
  40 #define PREFIX "module-"
  41
  42 static void short_info(const char *name, PA_GCC_UNUSED 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     }
  74
  75     if (path)
  76         printf("Path: %s\n", path);
  77 }
  78
  79 static void show_info(const char *name, const char *path, void (*info)(const char *name, const char *path, pa_modinfo*i)) {
  80     pa_modinfo *i;
  81
  82     pa_assert(name);
  83
  84     if ((i = pa_modinfo_get_by_name(path ? path : name))) {
  85         info(name, path, i);
  86         pa_modinfo_free(i);
  87     }
  88 }
  89
  90 extern const lt_dlsymlist lt_preloaded_symbols[];
  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 (!strcmp(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 }