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