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Diffstat (limited to 'src/fs/fs_misc.c')
| -rw-r--r-- | src/fs/fs_misc.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/src/fs/fs_misc.c b/src/fs/fs_misc.c new file mode 100644 index 0000000..89dc486 --- /dev/null +++ b/src/fs/fs_misc.c @@ -0,0 +1,231 @@ +/* + 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_api.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; +} + + +/** + * Return the current year (i.e. '2011'). + */ +unsigned int +GNUNET_FS_get_current_year () +{ + time_t tp; + struct tm *t; + + tp = time (NULL); + t = gmtime (&tp); + if (t == NULL) + return 0; + return t->tm_year + 1900; +} + + +/** + * Convert a year to an expiration time of January 1st of that year. + * + * @param year a year (after 1970, please ;-)). + * @return absolute time for January 1st of that year. + */ +struct GNUNET_TIME_Absolute +GNUNET_FS_year_to_time (unsigned int year) +{ + struct GNUNET_TIME_Absolute ret; + time_t tp; + struct tm t; + + memset (&t, 0, sizeof (t)); + if (year < 1900) + { + GNUNET_break (0); + return GNUNET_TIME_absolute_get (); /* now */ + } + t.tm_year = year - 1900; + t.tm_mday = 1; + t.tm_mon = 1; + t.tm_wday = 1; + t.tm_yday = 1; + tp = mktime (&t); + GNUNET_break (tp != (time_t) - 1); + ret.abs_value = tp * 1000LL; /* seconds to ms */ + return ret; +} + + +/** + * Convert an expiration time to the respective year (rounds) + * + * @param at absolute time + * @return year a year (after 1970), 0 on error + */ +unsigned int +GNUNET_FS_time_to_year (struct GNUNET_TIME_Absolute at) +{ + struct tm *t; + time_t tp; + + tp = at.abs_value / 1000; /* ms to seconds */ + t = gmtime (&tp); + if (t == NULL) + return 0; + return t->tm_year + 1900; + +} + + +/* end of fs_misc.c */ |