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 */