major rewrite of fs_download, hopefully fixing 1641

1 files changed, 165 insertions, 0 deletions

diff --git a/src/fs/fs_misc.c b/src/fs/fs_misc.c
new file mode 100644
index 000000000..e6c4eeea9
--- /dev/null
+++ b/src/fs/fs_misc.c
@@ -0,0 +1,165 @@
+/*
+     This file is part of GNUnet.
+     (C) 2010, 2011 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file fs/fs_misc.c
+ * @brief misc. functions related to file-sharing in general
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_constants.h"
+#include "gnunet_fs_service.h"
+#include "fs.h"
+
+
+/**
+ * Suggest a filename based on given metadata.
+ * 
+ * @param md given meta data
+ * @return NULL if meta data is useless for suggesting a filename
+ */
+char *
+GNUNET_FS_meta_data_suggest_filename (const struct GNUNET_CONTAINER_MetaData *md)
+{
+  static const char *mimeMap[][2] = {
+    {"application/bz2", ".bz2"},
+    {"application/gnunet-directory", ".gnd"},
+    {"application/java", ".class"},
+    {"application/msword", ".doc"},
+    {"application/ogg", ".ogg"},
+    {"application/pdf", ".pdf"},
+    {"application/pgp-keys", ".key"},
+    {"application/pgp-signature", ".pgp"},
+    {"application/postscript", ".ps"},
+    {"application/rar", ".rar"},
+    {"application/rtf", ".rtf"},
+    {"application/xml", ".xml"},
+    {"application/x-debian-package", ".deb"},
+    {"application/x-dvi", ".dvi"},
+    {"applixation/x-flac", ".flac"},
+    {"applixation/x-gzip", ".gz"},
+    {"application/x-java-archive", ".jar"},
+    {"application/x-java-vm", ".class"},
+    {"application/x-python-code", ".pyc"},
+    {"application/x-redhat-package-manager", ".rpm"},
+    {"application/x-rpm", ".rpm"},
+    {"application/x-tar", ".tar"},
+    {"application/x-tex-pk", ".pk"},
+    {"application/x-texinfo", ".texinfo"},
+    {"application/x-xcf", ".xcf"},
+    {"application/x-xfig", ".xfig"},
+    {"application/zip", ".zip"},
+    
+    {"audio/midi", ".midi"},
+    {"audio/mpeg", ".mp3"},
+    {"audio/real", ".rm"},
+    {"audio/x-wav", ".wav"},
+    
+    {"image/gif", ".gif"},
+    {"image/jpeg", ".jpg"},
+    {"image/pcx", ".pcx"},
+    {"image/png", ".png"},
+    {"image/tiff", ".tiff"},
+    {"image/x-ms-bmp", ".bmp"},
+    {"image/x-xpixmap", ".xpm"},
+    
+    {"text/css", ".css"},
+    {"text/html", ".html"},
+    {"text/plain", ".txt"},
+    {"text/rtf", ".rtf"},
+    {"text/x-c++hdr", ".h++"},
+    {"text/x-c++src", ".c++"},
+    {"text/x-chdr", ".h"},
+    {"text/x-csrc", ".c"},
+    {"text/x-java", ".java"},
+    {"text/x-moc", ".moc"},
+    {"text/x-pascal", ".pas"},
+    {"text/x-perl", ".pl"},
+    {"text/x-python", ".py"},
+    {"text/x-tex", ".tex"},
+    
+    {"video/avi", ".avi"},
+    {"video/mpeg", ".mpeg"},
+    {"video/quicktime", ".qt"},
+    {"video/real", ".rm"},
+    {"video/x-msvideo", ".avi"},
+    {NULL, NULL},
+  };
+  char *ret;
+  unsigned int i;
+  char *mime;
+  char *base;
+  const char *ext;
+
+  ret = GNUNET_CONTAINER_meta_data_get_by_type (md,
+                                                EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME);
+  if (ret != NULL)
+    return ret;  
+  ext = NULL;
+  mime = GNUNET_CONTAINER_meta_data_get_by_type (md,
+                                                 EXTRACTOR_METATYPE_MIMETYPE);
+  if (mime != NULL)
+    {
+      i = 0;
+      while ( (mimeMap[i][0] != NULL) && 
+              (0 != strcmp (mime, mimeMap[i][0])))
+        i++;
+      if (mimeMap[i][1] == NULL)
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | 
+                    GNUNET_ERROR_TYPE_BULK,
+                    _("Did not find mime type `%s' in extension list.\n"),
+                    mime);
+      else
+        ext = mimeMap[i][1];
+      GNUNET_free (mime);
+    }
+  base = GNUNET_CONTAINER_meta_data_get_first_by_types (md,
+                                                        EXTRACTOR_METATYPE_TITLE,
+                                                        EXTRACTOR_METATYPE_BOOK_TITLE,
+                                                        EXTRACTOR_METATYPE_ORIGINAL_TITLE,
+                                                        EXTRACTOR_METATYPE_PACKAGE_NAME,
+                                                        EXTRACTOR_METATYPE_URL,
+                                                        EXTRACTOR_METATYPE_URI, 
+                                                        EXTRACTOR_METATYPE_DESCRIPTION,
+                                                        EXTRACTOR_METATYPE_ISRC,
+                                                        EXTRACTOR_METATYPE_JOURNAL_NAME,
+                                                        EXTRACTOR_METATYPE_AUTHOR_NAME,
+                                                        EXTRACTOR_METATYPE_SUBJECT,
+                                                        EXTRACTOR_METATYPE_ALBUM,
+                                                        EXTRACTOR_METATYPE_ARTIST,
+                                                        EXTRACTOR_METATYPE_KEYWORDS,
+                                                        EXTRACTOR_METATYPE_COMMENT,
+                                                        EXTRACTOR_METATYPE_UNKNOWN,
+                                                        -1);
+  if ( (base == NULL) &&
+       (ext == NULL) )
+    return NULL;
+  if (base == NULL)
+    return GNUNET_strdup (ext);
+  if (ext == NULL)
+    return base;
+  GNUNET_asprintf (&ret,
+                   "%s%s",
+                   base,
+                   ext);
+  GNUNET_free (base);
+  return ret;
+}
+
+/* end of fs_misc.c */