src/fs/fs_misc.c

   1 /*
   2      This file is part of GNUnet.
   3      Copyright (C) 2010, 2011, 2017 GNUnet e.V.
   4
   5      GNUnet is free software: you can redistribute it and/or modify it
   6      under the terms of the GNU General Public License as published
   7      by the Free Software Foundation, either version 3 of the License,
   8      or (at your option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      Affero General Public License for more details.
  14 */
  15 /**
  16  * @file fs/fs_misc.c
  17  * @brief misc. functions related to file-sharing in general
  18  * @author Christian Grothoff
  19  */
  20 #include "platform.h"
  21 #include "gnunet_constants.h"
  22 #include "gnunet_fs_service.h"
  23 #include "fs_api.h"
  24
  25
  26 /**
  27  * Suggest a filename based on given metadata.
  28  *
  29  * @param md given meta data
  30  * @return NULL if meta data is useless for suggesting a filename
  31  */
  32 char *
  33 GNUNET_FS_meta_data_suggest_filename (const struct GNUNET_CONTAINER_MetaData
  34                                       *md)
  35 {
  36   static const char *mimeMap[][2] = {
  37     {"application/bz2", ".bz2"},
  38     {"application/gnunet-directory", ".gnd"},
  39     {"application/java", ".class"},
  40     {"application/msword", ".doc"},
  41     {"application/nar", ".nar"},
  42     {"application/narinfo", ".narinfo"},
  43     {"application/ogg", ".ogg"},
  44     {"application/pdf", ".pdf"},
  45     {"application/pgp-keys", ".key"},
  46     {"application/pgp-signature", ".pgp"},
  47     {"application/postscript", ".ps"},
  48     {"application/rar", ".rar"},
  49     {"application/rtf", ".rtf"},
  50     {"application/xml", ".xml"},
  51     {"application/x-debian-package", ".deb"},
  52     {"application/x-dvi", ".dvi"},
  53     {"application/x-flac", ".flac"},
  54     {"application/x-gzip", ".gz"},
  55     {"application/x-java-archive", ".jar"},
  56     {"application/x-java-vm", ".class"},
  57     {"application/x-python-code", ".pyc"},
  58     {"application/x-redhat-package-manager", ".rpm"},
  59     {"application/x-rpm", ".rpm"},
  60     {"application/x-tar", ".tar"},
  61     {"application/x-tex-pk", ".pk"},
  62     {"application/x-texinfo", ".texinfo"},
  63     {"application/x-xcf", ".xcf"},
  64     {"application/x-xfig", ".xfig"},
  65     {"application/zip", ".zip"},
  66
  67     {"audio/midi", ".midi"},
  68     {"audio/mpeg", ".mp3"},
  69     {"audio/real", ".rm"},
  70     {"audio/x-wav", ".wav"},
  71
  72     {"image/gif", ".gif"},
  73     {"image/jpeg", ".jpg"},
  74     {"image/pcx", ".pcx"},
  75     {"image/png", ".png"},
  76     {"image/tiff", ".tiff"},
  77     {"image/x-ms-bmp", ".bmp"},
  78     {"image/x-xpixmap", ".xpm"},
  79
  80     {"text/css", ".css"},
  81     {"text/html", ".html"},
  82     {"text/plain", ".txt"},
  83     {"text/rtf", ".rtf"},
  84     {"text/x-c++hdr", ".h++"},
  85     {"text/x-c++src", ".c++"},
  86     {"text/x-chdr", ".h"},
  87     {"text/x-csrc", ".c"},
  88     {"text/x-java", ".java"},
  89     {"text/x-moc", ".moc"},
  90     {"text/x-pascal", ".pas"},
  91     {"text/x-perl", ".pl"},
  92     {"text/x-python", ".py"},
  93     {"text/x-tex", ".tex"},
  94
  95     {"video/avi", ".avi"},
  96     {"video/mpeg", ".mpeg"},
  97     {"video/quicktime", ".qt"},
  98     {"video/real", ".rm"},
  99     {"video/x-msvideo", ".avi"},
 100     {NULL, NULL},
 101   };
 102   char *ret;
 103   unsigned int i;
 104   char *mime;
 105   char *base;
 106   const char *ext;
 107
 108   ret =
 109       GNUNET_CONTAINER_meta_data_get_by_type (md,
 110                                               EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME);
 111   if (ret != NULL)
 112     return ret;
 113   ext = NULL;
 114   mime =
 115       GNUNET_CONTAINER_meta_data_get_by_type (md, EXTRACTOR_METATYPE_MIMETYPE);
 116   if (mime != NULL)
 117   {
 118     i = 0;
 119     while ((mimeMap[i][0] != NULL) && (0 != strcmp (mime, mimeMap[i][0])))
 120       i++;
 121     if (mimeMap[i][1] == NULL)
 122       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
 123                   _("Did not find mime type `%s' in extension list.\n"), mime);
 124     else
 125       ext = mimeMap[i][1];
 126     GNUNET_free (mime);
 127   }
 128   base =
 129       GNUNET_CONTAINER_meta_data_get_first_by_types (md,
 130                                                      EXTRACTOR_METATYPE_TITLE,
 131                                                      EXTRACTOR_METATYPE_BOOK_TITLE,
 132                                                      EXTRACTOR_METATYPE_ORIGINAL_TITLE,
 133                                                      EXTRACTOR_METATYPE_PACKAGE_NAME,
 134                                                      EXTRACTOR_METATYPE_URL,
 135                                                      EXTRACTOR_METATYPE_URI,
 136                                                      EXTRACTOR_METATYPE_DESCRIPTION,
 137                                                      EXTRACTOR_METATYPE_ISRC,
 138                                                      EXTRACTOR_METATYPE_JOURNAL_NAME,
 139                                                      EXTRACTOR_METATYPE_AUTHOR_NAME,
 140                                                      EXTRACTOR_METATYPE_SUBJECT,
 141                                                      EXTRACTOR_METATYPE_ALBUM,
 142                                                      EXTRACTOR_METATYPE_ARTIST,
 143                                                      EXTRACTOR_METATYPE_KEYWORDS,
 144                                                      EXTRACTOR_METATYPE_COMMENT,
 145                                                      EXTRACTOR_METATYPE_UNKNOWN,
 146                                                      -1);
 147   if ((base == NULL) && (ext == NULL))
 148     return NULL;
 149   if (base == NULL)
 150     return GNUNET_strdup (ext);
 151   if (ext == NULL)
 152     return base;
 153   GNUNET_asprintf (&ret, "%s%s", base, ext);
 154   GNUNET_free (base);
 155   return ret;
 156 }
 157
 158
 159 /* end of fs_misc.c */