src/daemon/dumpmodules.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <string.h>
  30 #include <getopt.h>
  31 #include <stdio.h>
  32 #include <ltdl.h>
  33
  34 #include <pulse/util.h>
  35
  36 #include <pulsecore/modinfo.h>
  37 #include <pulsecore/core-util.h>
  38 #include <pulsecore/macro.h>
  39
  40 #include "dumpmodules.h"
  41
  42 #define PREFIX "module-"
  43
  44 static void short_info(const char *name, PA_GCC_UNUSED const char *path, pa_modinfo *i) {
  45     pa_assert(name);
  46     pa_assert(i);
  47
  48     printf("%-40s%s\n", name, i->description ? i->description : "n/a");
  49 }
  50
  51 static void long_info(const char *name, const char *path, pa_modinfo *i) {
  52     static int nl = 0;
  53     pa_assert(name);
  54     pa_assert(i);
  55
  56     if (nl)
  57         printf("\n");
  58
  59     nl = 1;
  60
  61     printf("Name: %s\n", name);
  62
  63     if (!i->description && !i->version && !i->author && !i->usage)
  64         printf("No module information available\n");
  65     else {
  66         if (i->version)
  67             printf("Version: %s\n", i->version);
  68         if (i->description)
  69             printf("Description: %s\n", i->description);
  70         if (i->author)
  71             printf("Author: %s\n", i->author);
  72         if (i->usage)
  73             printf("Usage: %s\n", i->usage);
  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 }