/*
This file is part of GNUnet.
- (C) 2005-2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2005-2013 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#if HAVE_ICONV
#include <iconv.h>
#endif
-#include "gnunet_util_lib.h"
+#include "gnunet_crypto_lib.h"
+#include "gnunet_strings_lib.h"
#include <unicase.h>
#include <unistr.h>
#include <uniconv.h>
*
* Unlike using "snprintf" with "%s", this function
* will add 0-terminators after each string. The
- * "GNUNET_string_buffer_tokenize" function can be
+ * #GNUNET_string_buffer_tokenize() function can be
* used to parse the buffer back into individual
* strings.
*
{ "days", 24 * 60 * 60 * 1000LL * 1000LL},
{ "week", 7 * 24 * 60 * 60 * 1000LL * 1000LL},
{ "weeks", 7 * 24 * 60 * 60 * 1000LL * 1000LL},
+ { "year", 31536000000000LL /* year */ },
+ { "years", 31536000000000LL /* year */ },
{ "a", 31536000000000LL /* year */ },
{ NULL, 0}
};
return GNUNET_SYSERR;
t = mktime (&tv);
atime->abs_value_us = (uint64_t) ((uint64_t) t * 1000LL * 1000LL);
-#if WINDOWS
- {
- DWORD tzv;
- TIME_ZONE_INFORMATION tzi;
- tzv = GetTimeZoneInformation (&tzi);
- if (TIME_ZONE_ID_INVALID != tzv)
- {
- atime->abs_value_us -= 1000LL * 1000LL * tzi.Bias * 60LL;
- }
- }
-#endif
return GNUNET_OK;
}
free (encoded_string);
return ret;
fail:
- LOG (GNUNET_ERROR_TYPE_WARNING, _("Character sets requested were `%s'->`%s'\n"),
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Character sets requested were `%s'->`%s'\n"),
"UTF-8", output_charset);
ret = GNUNET_malloc (len + 1);
memcpy (ret, input, len);
/**
- * Get the numeric value corresponding to a character.
+ * Get the decoded value corresponding to a character according to Crockford
+ * Base32 encoding.
*
* @param a a character
* @return corresponding numeric value
static unsigned int
getValue__ (unsigned char a)
{
+ unsigned int dec;
+
+ switch (a)
+ {
+ case 'O':
+ case 'o':
+ a = '0';
+ break;
+ case 'i':
+ case 'I':
+ case 'l':
+ case 'L':
+ a = '1';
+ break;
+ /* also consider U to be V */
+ case 'u':
+ case 'U':
+ a = 'V';
+ break;
+ default:
+ break;
+ }
if ((a >= '0') && (a <= '9'))
return a - '0';
- if ((a >= 'A') && (a <= 'V'))
- return (a - 'A' + 10);
- if ((a >= 'a') && (a <= 'v'))
- return (a - 'a' + 10);
+ if ((a >= 'a') && (a <= 'z'))
+ a = toupper (a);
+ /* return (a - 'a' + 10); */
+ dec = 0;
+ if ((a >= 'A') && (a <= 'Z'))
+ {
+ if ('I' < a)
+ dec++;
+ if ('L' < a)
+ dec++;
+ if ('O' < a)
+ dec++;
+ if ('U' < a)
+ dec++;
+ return (a - 'A' + 10 - dec);
+ }
return -1;
}
/**
- * Convert binary data to ASCII encoding. The ASCII encoding is rather
- * GNUnet specific. It was chosen such that it only uses characters
- * in [0-9A-V], can be produced without complex arithmetics and uses a
- * small number of characters.
- * Does not append 0-terminator, but returns a pointer to the place where
- * it should be placed, if needed.
+ * Convert binary data to ASCII encoding using Crockford Base32 encoding.
+ * Returns a pointer to the byte after the last byte in the string, that
+ * is where the 0-terminator was placed if there was room.
*
* @param data data to encode
* @param size size of data (in bytes)
* @param out buffer to fill
* @param out_size size of the buffer. Must be large enough to hold
- * ((size*8) + (((size*8) % 5) > 0 ? 5 - ((size*8) % 5) : 0)) / 5 bytes
- * @return pointer to the next byte in 'out' or NULL on error.
+ * (size * 8 + 4) / 5 bytes
+ * @return pointer to the next byte in @a out or NULL on error.
*/
char *
-GNUNET_STRINGS_data_to_string (const void *data, size_t size, char *out, size_t out_size)
+GNUNET_STRINGS_data_to_string (const void *data,
+ size_t size,
+ char *out,
+ size_t out_size)
{
/**
* 32 characters for encoding
*/
- static char *encTable__ = "0123456789ABCDEFGHIJKLMNOPQRSTUV";
+ static char *encTable__ = "0123456789ABCDEFGHJKMNPQRSTVWXYZ";
unsigned int wpos;
unsigned int rpos;
unsigned int bits;
unsigned int vbit;
const unsigned char *udata;
- GNUNET_assert (data != NULL);
- GNUNET_assert (out != NULL);
udata = data;
- if (out_size < (((size*8) + ((size*8) % 5)) % 5))
+ if (out_size < (size * 8 + 4) / 5)
{
GNUNET_break (0);
return NULL;
out[wpos++] = encTable__[(bits >> (vbit - 5)) & 31];
vbit -= 5;
}
- GNUNET_assert (vbit == 0);
+ GNUNET_assert (0 == vbit);
if (wpos < out_size)
out[wpos] = '\0';
return &out[wpos];
/**
- * Convert ASCII encoding back to data
- * out_size must match exactly the size of the data before it was encoded.
+ * Return the base32crockford encoding of the given buffer.
+ *
+ * The returned string will be freshly allocated, and must be free'd
+ * with GNUNET_free().
+ *
+ * @param buffer with data
+ * @param size size of the buffer
+ * @return freshly allocated, null-terminated string
+ */
+char *
+GNUNET_STRINGS_data_to_string_alloc (const void *buf,
+ size_t size)
+{
+ char *str_buf;
+ size_t len = size * 8;
+ char *end;
+
+ if (len % 5 > 0)
+ len += 5 - len % 5;
+ len /= 5;
+ str_buf = GNUNET_malloc (len + 1);
+ end = GNUNET_STRINGS_data_to_string (buf, size, str_buf, len);
+ if (NULL == end)
+ {
+ GNUNET_free (str_buf);
+ return NULL;
+ }
+ *end = '\0';
+ return str_buf;
+}
+
+
+/**
+ * Convert Crockford Base32hex encoding back to data.
+ * @a out_size must match exactly the size of the data before it was encoded.
*
* @param enc the encoding
* @param enclen number of characters in @a enc (without 0-terminator, which can be missing)
{
vbit = encoded_len % 5; /* padding! */
shift = 5 - vbit;
- bits = (ret = getValue__ (enc[--rpos])) >> (5 - (encoded_len % 5));
+ bits = (ret = getValue__ (enc[--rpos])) >> shift;
}
else
{
projects / oweals / gnunet.git / blobdiff