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 Affero 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      You should have received a copy of the GNU Affero General Public License
  16      along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18      SPDX-License-Identifier: AGPL3.0-or-later
  19 */
  20 /**
  21  * @file fs/fs_misc.c
  22  * @brief misc. functions related to file-sharing in general
  23  * @author Christian Grothoff
  24  */
  25 #include "platform.h"
  26 #include "gnunet_constants.h"
  27 #include "gnunet_fs_service.h"
  28 #include "fs_api.h"
  29
  30
  31 /**
  32  * Suggest a filename based on given metadata.
  33  *
  34  * @param md given meta data
  35  * @return NULL if meta data is useless for suggesting a filename
  36  */
  37 char *
  38 GNUNET_FS_meta_data_suggest_filename (const struct GNUNET_CONTAINER_MetaData
  39                                       *md)
  40 {
  41   static const char *mimeMap[][2] = {
  42     {"application/bz2", ".bz2"},
  43     {"application/gnunet-directory", ".gnd"},
  44     {"application/java", ".class"},
  45     {"application/msword", ".doc"},
  46     {"application/nar", ".nar"},
  47     {"application/narinfo", ".narinfo"},
  48     {"application/ogg", ".ogg"},
  49     {"application/pdf", ".pdf"},
  50     {"application/pgp-keys", ".key"},
  51     {"application/pgp-signature", ".pgp"},
  52     {"application/postscript", ".ps"},
  53     {"application/rar", ".rar"},
  54     {"application/rtf", ".rtf"},
  55     {"application/xml", ".xml"},
  56     {"application/x-debian-package", ".deb"},
  57     {"application/x-dvi", ".dvi"},
  58     {"application/x-flac", ".flac"},
  59     {"application/x-gzip", ".gz"},
  60     {"application/x-java-archive", ".jar"},
  61     {"application/x-java-vm", ".class"},
  62     {"application/x-python-code", ".pyc"},
  63     {"application/x-redhat-package-manager", ".rpm"},
  64     {"application/x-rpm", ".rpm"},
  65     {"application/x-tar", ".tar"},
  66     {"application/x-tex-pk", ".pk"},
  67     {"application/x-texinfo", ".texinfo"},
  68     {"application/x-xcf", ".xcf"},
  69     {"application/x-xfig", ".xfig"},
  70     {"application/zip", ".zip"},
  71
  72     {"audio/midi", ".midi"},
  73     {"audio/mpeg", ".mp3"},
  74     {"audio/real", ".rm"},
  75     {"audio/x-wav", ".wav"},
  76
  77     {"image/gif", ".gif"},
  78     {"image/jpeg", ".jpg"},
  79     {"image/pcx", ".pcx"},
  80     {"image/png", ".png"},
  81     {"image/tiff", ".tiff"},
  82     {"image/x-ms-bmp", ".bmp"},
  83     {"image/x-xpixmap", ".xpm"},
  84
  85     {"text/css", ".css"},
  86     {"text/html", ".html"},
  87     {"text/plain", ".txt"},
  88     {"text/rtf", ".rtf"},
  89     {"text/x-c++hdr", ".h++"},
  90     {"text/x-c++src", ".c++"},
  91     {"text/x-chdr", ".h"},
  92     {"text/x-csrc", ".c"},
  93     {"text/x-java", ".java"},
  94     {"text/x-moc", ".moc"},
  95     {"text/x-pascal", ".pas"},
  96     {"text/x-perl", ".pl"},
  97     {"text/x-python", ".py"},
  98     {"text/x-tex", ".tex"},
  99
 100     {"video/avi", ".avi"},
 101     {"video/mpeg", ".mpeg"},
 102     {"video/quicktime", ".qt"},
 103     {"video/real", ".rm"},
 104     {"video/x-msvideo", ".avi"},
 105     {NULL, NULL},
 106   };
 107   char *ret;
 108   unsigned int i;
 109   char *mime;
 110   char *base;
 111   const char *ext;
 112
 113   ret =
 114       GNUNET_CONTAINER_meta_data_get_by_type (md,
 115                                               EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME);
 116   if (ret != NULL)
 117     return ret;
 118   ext = NULL;
 119   mime =
 120       GNUNET_CONTAINER_meta_data_get_by_type (md, EXTRACTOR_METATYPE_MIMETYPE);
 121   if (mime != NULL)
 122   {
 123     i = 0;
 124     while ((mimeMap[i][0] != NULL) && (0 != strcmp (mime, mimeMap[i][0])))
 125       i++;
 126     if (mimeMap[i][1] == NULL)
 127       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
 128                   _("Did not find mime type `%s' in extension list.\n"), mime);
 129     else
 130       ext = mimeMap[i][1];
 131     GNUNET_free (mime);
 132   }
 133   base =
 134       GNUNET_CONTAINER_meta_data_get_first_by_types (md,
 135                                                      EXTRACTOR_METATYPE_TITLE,
 136                                                      EXTRACTOR_METATYPE_BOOK_TITLE,
 137                                                      EXTRACTOR_METATYPE_ORIGINAL_TITLE,
 138                                                      EXTRACTOR_METATYPE_PACKAGE_NAME,
 139                                                      EXTRACTOR_METATYPE_URL,
 140                                                      EXTRACTOR_METATYPE_URI,
 141                                                      EXTRACTOR_METATYPE_DESCRIPTION,
 142                                                      EXTRACTOR_METATYPE_ISRC,
 143                                                      EXTRACTOR_METATYPE_JOURNAL_NAME,
 144                                                      EXTRACTOR_METATYPE_AUTHOR_NAME,
 145                                                      EXTRACTOR_METATYPE_SUBJECT,
 146                                                      EXTRACTOR_METATYPE_ALBUM,
 147                                                      EXTRACTOR_METATYPE_ARTIST,
 148                                                      EXTRACTOR_METATYPE_KEYWORDS,
 149                                                      EXTRACTOR_METATYPE_COMMENT,
 150                                                      EXTRACTOR_METATYPE_UNKNOWN,
 151                                                      -1);
 152   if ((base == NULL) && (ext == NULL))
 153     return NULL;
 154   if (base == NULL)
 155     return GNUNET_strdup (ext);
 156   if (ext == NULL)
 157     return base;
 158   GNUNET_asprintf (&ret, "%s%s", base, ext);
 159   GNUNET_free (base);
 160   return ret;
 161 }
 162
 163
 164 /* end of fs_misc.c */