X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Futil%2Fstrings.c;h=535c998cd5641fb0a6cb9f0e19c3b2ab04823ee4;hb=31adcb0e020b7861ee7f306a6e2fac0df9b10290;hp=91d27d84e76717d4ee2d6017d0fe864745638c60;hpb=33f4f49804f7940a8ed95b3185bed27ad406c204;p=oweals%2Fgnunet.git
diff --git a/src/util/strings.c b/src/util/strings.c
index 91d27d84e..535c998cd 100644
--- a/src/util/strings.c
+++ b/src/util/strings.c
@@ -1,23 +1,22 @@
/*
This file is part of GNUnet.
- (C) 2005, 2006 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2005-2017 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
- by the Free Software Foundation; either version 2, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ 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.
+ Affero 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.
-*/
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see .
+ SPDX-License-Identifier: AGPL3.0-or-later
+*/
/**
* @file util/strings.c
* @brief string functions
@@ -29,15 +28,15 @@
#if HAVE_ICONV
#include
#endif
-#include "gnunet_common.h"
+#include "gnunet_crypto_lib.h"
#include "gnunet_strings_lib.h"
#include
#include
#include
-#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
+#define LOG(kind,...) GNUNET_log_from (kind, "util-strings", __VA_ARGS__)
-#define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", syscall)
+#define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util-strings", syscall)
/**
@@ -48,7 +47,7 @@
*
* 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.
*
@@ -79,7 +78,7 @@ GNUNET_STRINGS_buffer_fill (char *buffer, size_t size, unsigned int count, ...)
if (buffer != NULL)
{
GNUNET_assert (needed + slen <= size);
- memcpy (&buffer[needed], s, slen);
+ GNUNET_memcpy (&buffer[needed], s, slen);
}
needed += slen;
count--;
@@ -89,6 +88,37 @@ GNUNET_STRINGS_buffer_fill (char *buffer, size_t size, unsigned int count, ...)
}
+/**
+ * Convert a peer path to a human-readable string.
+ *
+ * @param pids array of PIDs to convert to a string
+ * @param num_pids length of the @a pids array
+ * @return string representing the array of @a pids
+ */
+char *
+GNUNET_STRINGS_pp2s (const struct GNUNET_PeerIdentity *pids,
+ unsigned int num_pids)
+{
+ char *buf;
+ size_t off;
+ size_t plen = num_pids * 5 + 1;
+
+ off = 0;
+ buf = GNUNET_malloc (plen);
+ for (unsigned int i = 0;
+ i < num_pids;
+ i++)
+ {
+ off += GNUNET_snprintf (&buf[off],
+ plen - off,
+ "%s%s",
+ GNUNET_i2s (&pids[i]),
+ (i == num_pids -1) ? "" : "-");
+ }
+ return buf;
+}
+
+
/**
* Given a buffer of a given size, find "count"
* 0-terminated strings in the buffer and assign
@@ -198,7 +228,7 @@ struct ConversionTable
* @param input input string to parse
* @param table table with the conversion of unit names to numbers
* @param output where to store the result
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
static int
convert_with_table (const char *input,
@@ -256,7 +286,7 @@ convert_with_table (const char *input,
*
* @param fancy_size human readable string (i.e. 1 MB)
* @param size set to the size in bytes
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
GNUNET_STRINGS_fancy_size_to_bytes (const char *fancy_size,
@@ -292,7 +322,7 @@ GNUNET_STRINGS_fancy_size_to_bytes (const char *fancy_size,
*
* @param fancy_time human readable string (i.e. 1 minute)
* @param rtime set to the relative time
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
GNUNET_STRINGS_fancy_time_to_relative (const char *fancy_time,
@@ -300,18 +330,28 @@ GNUNET_STRINGS_fancy_time_to_relative (const char *fancy_time,
{
static const struct ConversionTable table[] =
{
- { "ms", 1},
- { "s", 1000},
- { "\"", 1000},
- { "m", 60 * 1000},
- { "min", 60 * 1000},
- { "minutes", 60 * 1000},
- { "'", 60 * 1000},
- { "h", 60 * 60 * 1000},
- { "d", 24 * 60 * 60 * 1000},
- { "day", 24 * 60 * 60 * 1000},
- { "days", 24 * 60 * 60 * 1000},
- { "a", 31536000000LL /* year */ },
+ { "us", 1},
+ { "ms", 1000 },
+ { "s", 1000 * 1000LL },
+ { "second", 1000 * 1000LL },
+ { "seconds", 1000 * 1000LL },
+ { "\"", 1000 * 1000LL },
+ { "m", 60 * 1000 * 1000LL},
+ { "min", 60 * 1000 * 1000LL},
+ { "minute", 60 * 1000 * 1000LL},
+ { "minutes", 60 * 1000 * 1000LL},
+ { "'", 60 * 1000 * 1000LL},
+ { "h", 60 * 60 * 1000 * 1000LL},
+ { "hour", 60 * 60 * 1000 * 1000LL},
+ { "hours", 60 * 60 * 1000 * 1000LL},
+ { "d", 24 * 60 * 60 * 1000LL * 1000LL},
+ { "day", 24 * 60 * 60 * 1000LL * 1000LL},
+ { "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}
};
int ret;
@@ -325,18 +365,19 @@ GNUNET_STRINGS_fancy_time_to_relative (const char *fancy_time,
ret = convert_with_table (fancy_time,
table,
&val);
- rtime->rel_value = (uint64_t) val;
+ rtime->rel_value_us = (uint64_t) val;
return ret;
}
/**
* Convert a given fancy human-readable time to our internal
- * representation.
+ * representation. The human-readable time is expected to be
+ * in local time, whereas the returned value will be in UTC.
*
* @param fancy_time human readable string (i.e. %Y-%m-%d %H:%M:%S)
* @param atime set to the absolute time
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
GNUNET_STRINGS_fancy_time_to_absolute (const char *fancy_time,
@@ -345,7 +386,8 @@ GNUNET_STRINGS_fancy_time_to_absolute (const char *fancy_time,
struct tm tv;
time_t t;
- if (0 == strcasecmp ("end of time", fancy_time))
+ if (0 == strcasecmp ("end of time",
+ fancy_time))
{
*atime = GNUNET_TIME_UNIT_FOREVER_ABS;
return GNUNET_OK;
@@ -363,10 +405,7 @@ GNUNET_STRINGS_fancy_time_to_absolute (const char *fancy_time,
(NULL == strptime (fancy_time, "%Y", &tv)) )
return GNUNET_SYSERR;
t = mktime (&tv);
- atime->abs_value = (uint64_t) ((uint64_t) t * 1000LL);
-#if LINUX
- atime->abs_value -= 1000LL * timezone;
-#endif
+ atime->abs_value_us = (uint64_t) ((uint64_t) t * 1000LL * 1000LL);
return GNUNET_OK;
}
@@ -375,12 +414,20 @@ GNUNET_STRINGS_fancy_time_to_absolute (const char *fancy_time,
* Convert the len characters long character sequence
* given in input that is in the given input charset
* to a string in given output charset.
+ *
+ * @param input input string
+ * @param len number of bytes in @a input
+ * @param input_charset character set used for @a input
+ * @param output_charset desired character set for the return value
* @return the converted string (0-terminated),
* if conversion fails, a copy of the orignal
* string is returned.
*/
char *
-GNUNET_STRINGS_conv (const char *input, size_t len, const char *input_charset, const char *output_charset)
+GNUNET_STRINGS_conv (const char *input,
+ size_t len,
+ const char *input_charset,
+ const char *output_charset)
{
char *ret;
uint8_t *u8_string;
@@ -388,10 +435,10 @@ GNUNET_STRINGS_conv (const char *input, size_t len, const char *input_charset, c
size_t u8_string_length;
size_t encoded_string_length;
- u8_string = u8_conv_from_encoding (input_charset,
- iconveh_error,
- input, len,
- NULL, NULL,
+ u8_string = u8_conv_from_encoding (input_charset,
+ iconveh_error,
+ input, len,
+ NULL, NULL,
&u8_string_length);
if (NULL == u8_string)
{
@@ -401,14 +448,14 @@ GNUNET_STRINGS_conv (const char *input, size_t len, const char *input_charset, c
if (0 == strcmp (output_charset, "UTF-8"))
{
ret = GNUNET_malloc (u8_string_length + 1);
- memcpy (ret, u8_string, u8_string_length);
+ GNUNET_memcpy (ret, u8_string, u8_string_length);
ret[u8_string_length] = '\0';
free (u8_string);
return ret;
}
- encoded_string = u8_conv_to_encoding (output_charset, iconveh_error,
- u8_string, u8_string_length,
- NULL, NULL,
+ encoded_string = u8_conv_to_encoding (output_charset, iconveh_error,
+ u8_string, u8_string_length,
+ NULL, NULL,
&encoded_string_length);
free (u8_string);
if (NULL == encoded_string)
@@ -417,15 +464,16 @@ GNUNET_STRINGS_conv (const char *input, size_t len, const char *input_charset, c
goto fail;
}
ret = GNUNET_malloc (encoded_string_length + 1);
- memcpy (ret, encoded_string, encoded_string_length);
+ GNUNET_memcpy (ret, encoded_string, encoded_string_length);
ret[encoded_string_length] = '\0';
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);
+ GNUNET_memcpy (ret, input, len);
ret[len] = '\0';
return ret;
}
@@ -435,12 +483,18 @@ GNUNET_STRINGS_conv (const char *input, size_t len, const char *input_charset, c
* Convert the len characters long character sequence
* given in input that is in the given charset
* to UTF-8.
+ *
+ * @param input the input string (not necessarily 0-terminated)
+ * @param len the number of bytes in the @a input
+ * @param charset character set to convert from
* @return the converted string (0-terminated),
* if conversion fails, a copy of the orignal
* string is returned.
*/
char *
-GNUNET_STRINGS_to_utf8 (const char *input, size_t len, const char *charset)
+GNUNET_STRINGS_to_utf8 (const char *input,
+ size_t len,
+ const char *charset)
{
return GNUNET_STRINGS_conv (input, len, charset, "UTF-8");
}
@@ -450,56 +504,63 @@ GNUNET_STRINGS_to_utf8 (const char *input, size_t len, const char *charset)
* Convert the len bytes-long UTF-8 string
* given in input to the given charset.
*
+ * @param input the input string (not necessarily 0-terminated)
+ * @param len the number of bytes in the @a input
+ * @param charset character set to convert to
* @return the converted string (0-terminated),
* if conversion fails, a copy of the orignal
* string is returned.
*/
char *
-GNUNET_STRINGS_from_utf8 (const char *input, size_t len, const char *charset)
+GNUNET_STRINGS_from_utf8 (const char *input,
+ size_t len,
+ const char *charset)
{
return GNUNET_STRINGS_conv (input, len, "UTF-8", charset);
}
/**
- * Convert the utf-8 input string to lowercase
- * Output needs to be allocated appropriately
+ * Convert the utf-8 input string to lowercase.
+ * Output needs to be allocated appropriately.
*
* @param input input string
* @param output output buffer
*/
void
-GNUNET_STRINGS_utf8_tolower(const char* input, char** output)
+GNUNET_STRINGS_utf8_tolower (const char *input,
+ char *output)
{
uint8_t *tmp_in;
size_t len;
tmp_in = u8_tolower ((uint8_t*)input, strlen ((char *) input),
NULL, UNINORM_NFD, NULL, &len);
- memcpy(*output, tmp_in, len);
- (*output)[len] = '\0';
+ GNUNET_memcpy(output, tmp_in, len);
+ output[len] = '\0';
free(tmp_in);
}
/**
- * Convert the utf-8 input string to uppercase
- * Output needs to be allocated appropriately
+ * Convert the utf-8 input string to uppercase.
+ * Output needs to be allocated appropriately.
*
* @param input input string
* @param output output buffer
*/
void
-GNUNET_STRINGS_utf8_toupper(const char* input, char** output)
+GNUNET_STRINGS_utf8_toupper(const char *input,
+ char *output)
{
uint8_t *tmp_in;
size_t len;
tmp_in = u8_toupper ((uint8_t*)input, strlen ((char *) input),
NULL, UNINORM_NFD, NULL, &len);
- memcpy(*output, tmp_in, len);
- (*output)[len] = '\0';
- free(tmp_in);
+ GNUNET_memcpy (output, tmp_in, len);
+ output[len] = '\0';
+ free (tmp_in);
}
@@ -516,7 +577,6 @@ GNUNET_STRINGS_filename_expand (const char *fil)
char *buffer;
#ifndef MINGW
size_t len;
- size_t n;
char *fm;
const char *fil_ptr;
#else
@@ -573,7 +633,8 @@ GNUNET_STRINGS_filename_expand (const char *fil)
}
if (fm == NULL)
{
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "getcwd");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING,
+ "getcwd");
buffer = getenv ("PWD"); /* alternative */
if (buffer != NULL)
fm = GNUNET_strdup (buffer);
@@ -581,9 +642,9 @@ GNUNET_STRINGS_filename_expand (const char *fil)
if (fm == NULL)
fm = GNUNET_strdup ("./"); /* give up */
}
- n = strlen (fm) + 1 + strlen (fil_ptr) + 1;
- buffer = GNUNET_malloc (n);
- GNUNET_snprintf (buffer, n, "%s%s%s", fm,
+ GNUNET_asprintf (&buffer,
+ "%s%s%s",
+ fm,
(fm[strlen (fm) - 1] ==
DIR_SEPARATOR) ? "" : DIR_SEPARATOR_STR, fil_ptr);
GNUNET_free (fm);
@@ -594,23 +655,29 @@ GNUNET_STRINGS_filename_expand (const char *fil)
if ((lRet = plibc_conv_to_win_path (fil, fn)) != ERROR_SUCCESS)
{
SetErrnoFromWinError (lRet);
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "plibc_conv_to_win_path");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING,
+ "plibc_conv_to_win_path");
return NULL;
}
/* is the path relative? */
- if ((strncmp (fn + 1, ":\\", 2) != 0) && (strncmp (fn, "\\\\", 2) != 0))
+ if ( (0 != strncmp (fn + 1, ":\\", 2)) &&
+ (0 != strncmp (fn, "\\\\", 2)) )
{
char szCurDir[MAX_PATH + 1];
- lRet = GetCurrentDirectory (MAX_PATH + 1, szCurDir);
+ lRet = GetCurrentDirectory (MAX_PATH + 1,
+ szCurDir);
if (lRet + strlen (fn) + 1 > (MAX_PATH + 1))
{
SetErrnoFromWinError (ERROR_BUFFER_OVERFLOW);
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "GetCurrentDirectory");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING,
+ "GetCurrentDirectory");
return NULL;
}
- buffer = GNUNET_malloc (MAX_PATH + 1);
- GNUNET_snprintf (buffer, MAX_PATH + 1, "%s\\%s", szCurDir, fn);
+ GNUNET_asprintf (&buffer,
+ "%s\\%s",
+ szCurDir,
+ fn);
GNUNET_free (fn);
fn = buffer;
}
@@ -634,41 +701,48 @@ GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta,
int do_round)
{
static char buf[128];
- const char *unit = _( /* time unit */ "ms");
- uint64_t dval = delta.rel_value;
+ const char *unit = _( /* time unit */ "µs");
+ uint64_t dval = delta.rel_value_us;
- if (GNUNET_TIME_UNIT_FOREVER_REL.rel_value == delta.rel_value)
+ if (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == delta.rel_value_us)
return _("forever");
- if (0 == delta.rel_value)
+ if (0 == delta.rel_value_us)
return _("0 ms");
- if ( ( (GNUNET_YES == do_round) &&
- (dval > 5 * 1000) ) ||
+ if ( ( (GNUNET_YES == do_round) &&
+ (dval > 5 * 1000) ) ||
(0 == (dval % 1000) ))
{
dval = dval / 1000;
- unit = _( /* time unit */ "s");
+ unit = _( /* time unit */ "ms");
if ( ( (GNUNET_YES == do_round) &&
- (dval > 5 * 60) ) ||
- (0 == (dval % 60) ) )
+ (dval > 5 * 1000) ) ||
+ (0 == (dval % 1000) ))
{
- dval = dval / 60;
- unit = _( /* time unit */ "m");
+ dval = dval / 1000;
+ unit = _( /* time unit */ "s");
if ( ( (GNUNET_YES == do_round) &&
- (dval > 5 * 60) ) ||
- (0 == (dval % 60) ))
+ (dval > 5 * 60) ) ||
+ (0 == (dval % 60) ) )
{
- dval = dval / 60;
- unit = _( /* time unit */ "h");
- if ( ( (GNUNET_YES == do_round) &&
- (dval > 5 * 24) ) ||
- (0 == (dval % 24)) )
+ dval = dval / 60;
+ unit = _( /* time unit */ "m");
+ if ( ( (GNUNET_YES == do_round) &&
+ (dval > 5 * 60) ) ||
+ (0 == (dval % 60) ))
{
- dval = dval / 24;
- if (1 == dval)
- unit = _( /* time unit */ "day");
- else
- unit = _( /* time unit */ "days");
- }
+ dval = dval / 60;
+ unit = _( /* time unit */ "h");
+ if ( ( (GNUNET_YES == do_round) &&
+ (dval > 5 * 24) ) ||
+ (0 == (dval % 24)) )
+ {
+ dval = dval / 24;
+ if (1 == dval)
+ unit = _( /* time unit */ "day");
+ else
+ unit = _( /* time unit */ "days");
+ }
+ }
}
}
}
@@ -679,12 +753,13 @@ GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta,
/**
- * "asctime", except for GNUnet time.
- * This is one of the very few calls in the entire API that is
- * NOT reentrant!
+ * "asctime", except for GNUnet time. Converts a GNUnet internal
+ * absolute time (which is in UTC) to a string in local time.
+ * Note that the returned value will be overwritten if this function
+ * is called again.
*
- * @param t time to convert
- * @return absolute time in human-readable format
+ * @param t the absolute time to convert
+ * @return timestamp in human-readable form in local time
*/
const char *
GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t)
@@ -693,11 +768,38 @@ GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t)
time_t tt;
struct tm *tp;
- if (t.abs_value == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value)
+ if (t.abs_value_us == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
return _("end of time");
- tt = t.abs_value / 1000;
- tp = gmtime (&tt);
+ tt = t.abs_value_us / 1000LL / 1000LL;
+ tp = localtime (&tt);
+ /* This is hacky, but i don't know a way to detect libc character encoding.
+ * Just expect utf8 from glibc these days.
+ * As for msvcrt, use the wide variant, which always returns utf16
+ * (otherwise we'd have to detect current codepage or use W32API character
+ * set conversion routines to convert to UTF8).
+ */
+#ifndef WINDOWS
strftime (buf, sizeof (buf), "%a %b %d %H:%M:%S %Y", tp);
+#else
+ {
+ static wchar_t wbuf[255];
+ uint8_t *conved;
+ size_t ssize;
+
+ wcsftime (wbuf, sizeof (wbuf) / sizeof (wchar_t),
+ L"%a %b %d %H:%M:%S %Y", tp);
+
+ ssize = sizeof (buf);
+ conved = u16_to_u8 (wbuf, sizeof (wbuf) / sizeof (wchar_t),
+ (uint8_t *) buf, &ssize);
+ if (conved != (uint8_t *) buf)
+ {
+ strncpy (buf, (char *) conved, sizeof (buf));
+ buf[255 - 1] = '\0';
+ free (conved);
+ }
+ }
+#endif
return buf;
}
@@ -718,6 +820,7 @@ GNUNET_STRINGS_get_short_name (const char *filename)
{
const char *short_fn = filename;
const char *ss;
+
while (NULL != (ss = strstr (short_fn, DIR_SEPARATOR_STR))
&& (ss[1] != '\0'))
short_fn = 1 + ss;
@@ -726,7 +829,8 @@ GNUNET_STRINGS_get_short_name (const char *filename)
/**
- * 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
@@ -734,46 +838,80 @@ GNUNET_STRINGS_get_short_name (const char *filename)
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 <= '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
+ * 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;
@@ -803,20 +941,55 @@ GNUNET_STRINGS_data_to_string (const void *data, size_t size, char *out, size_t
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 'enc' (without 0-terminator, which can be missing)
+ * @param enclen number of characters in @a enc (without 0-terminator, which can be missing)
* @param out location where to store the decoded data
- * @param out_size sizeof the output buffer
- * @return GNUNET_OK on success, GNUNET_SYSERR if result has the wrong encoding
+ * @param out_size size of the output buffer @a out
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR if result has the wrong encoding
*/
int
GNUNET_STRINGS_string_to_data (const char *enc, size_t enclen,
@@ -829,31 +1002,40 @@ GNUNET_STRINGS_string_to_data (const char *enc, size_t enclen,
int ret;
int shift;
unsigned char *uout;
- int encoded_len = out_size * 8;
+ unsigned int encoded_len = out_size * 8;
+ if (0 == enclen)
+ {
+ if (0 == out_size)
+ return GNUNET_OK;
+ return GNUNET_SYSERR;
+ }
uout = out;
- if (encoded_len % 5 > 0)
+ wpos = out_size;
+ rpos = enclen;
+ if ((encoded_len % 5) > 0)
{
vbit = encoded_len % 5; /* padding! */
shift = 5 - vbit;
+ bits = (ret = getValue__ (enc[--rpos])) >> shift;
}
else
{
- vbit = 0;
+ vbit = 5;
shift = 0;
+ bits = (ret = getValue__ (enc[--rpos]));
}
if ((encoded_len + shift) / 5 != enclen)
return GNUNET_SYSERR;
-
- wpos = out_size;
- rpos = enclen;
- bits = (ret = getValue__ (enc[--rpos])) >> (5 - encoded_len % 5);
if (-1 == ret)
return GNUNET_SYSERR;
while (wpos > 0)
{
if (0 == rpos)
+ {
+ GNUNET_break (0);
return GNUNET_SYSERR;
+ }
bits = ((ret = getValue__ (enc[--rpos])) << vbit) | bits;
if (-1 == ret)
return GNUNET_SYSERR;
@@ -889,11 +1071,13 @@ GNUNET_STRINGS_string_to_data (const char *enc, size_t enclen,
* (if they weren't NULL).
*/
int
-GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part,
- const char **path_part)
+GNUNET_STRINGS_parse_uri (const char *path,
+ char **scheme_part,
+ const char **path_part)
{
size_t len;
- int i, end;
+ size_t i;
+ int end;
int pp_state = 0;
const char *post_scheme_part = NULL;
len = strlen (path);
@@ -902,7 +1086,7 @@ GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part,
switch (pp_state)
{
case 0:
- if (path[i] == ':' && i > 0)
+ if ( (path[i] == ':') && (i > 0) )
{
pp_state += 1;
continue;
@@ -934,7 +1118,7 @@ GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part,
if (scheme_part)
{
*scheme_part = GNUNET_malloc (post_scheme_part - path + 1);
- memcpy (*scheme_part, path, post_scheme_part - path);
+ GNUNET_memcpy (*scheme_part, path, post_scheme_part - path);
(*scheme_part)[post_scheme_part - path] = '\0';
}
if (path_part)
@@ -944,22 +1128,24 @@ GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part,
/**
- * Check whether 'filename' is absolute or not, and if it's an URI
+ * Check whether @a filename is absolute or not, and if it's an URI
*
* @param filename filename to check
- * @param can_be_uri GNUNET_YES to check for being URI, GNUNET_NO - to
+ * @param can_be_uri #GNUNET_YES to check for being URI, #GNUNET_NO - to
* assume it's not URI
- * @param r_is_uri a pointer to an int that is set to GNUNET_YES if 'filename'
- * is URI and to GNUNET_NO otherwise. Can be NULL. If 'can_be_uri' is
- * not GNUNET_YES, *r_is_uri is set to GNUNET_NO.
+ * @param r_is_uri a pointer to an int that is set to #GNUNET_YES if @a filename
+ * is URI and to #GNUNET_NO otherwise. Can be NULL. If @a can_be_uri is
+ * not #GNUNET_YES, `* r_is_uri` is set to #GNUNET_NO.
* @param r_uri_scheme a pointer to a char * that is set to a pointer to URI scheme.
* The string is allocated by the function, and should be freed with
- * GNUNET_free (). Can be NULL.
- * @return GNUNET_YES if 'filename' is absolute, GNUNET_NO otherwise.
+ * GNUNET_free(). Can be NULL.
+ * @return #GNUNET_YES if @a filename is absolute, #GNUNET_NO otherwise.
*/
int
-GNUNET_STRINGS_path_is_absolute (const char *filename, int can_be_uri,
- int *r_is_uri, char **r_uri_scheme)
+GNUNET_STRINGS_path_is_absolute (const char *filename,
+ int can_be_uri,
+ int *r_is_uri,
+ char **r_uri_scheme)
{
#if WINDOWS
size_t len;
@@ -1018,12 +1204,12 @@ GNUNET_STRINGS_path_is_absolute (const char *filename, int can_be_uri,
/**
- * Perform 'checks' on 'filename'
- *
+ * Perform @a checks on @a filename.
+ *
* @param filename file to check
* @param checks checks to perform
- * @return GNUNET_YES if all checks pass, GNUNET_NO if at least one of them
- * fails, GNUNET_SYSERR when a check can't be performed
+ * @return #GNUNET_YES if all checks pass, #GNUNET_NO if at least one of them
+ * fails, #GNUNET_SYSERR when a check can't be performed
*/
int
GNUNET_STRINGS_check_filename (const char *filename,
@@ -1058,18 +1244,19 @@ GNUNET_STRINGS_check_filename (const char *filename,
/**
- * Tries to convert 'zt_addr' string to an IPv6 address.
+ * Tries to convert @a zt_addr string to an IPv6 address.
* The string is expected to have the format "[ABCD::01]:80".
- *
+ *
* @param zt_addr 0-terminated string. May be mangled by the function.
- * @param addrlen length of zt_addr (not counting 0-terminator).
+ * @param addrlen length of @a zt_addr (not counting 0-terminator).
* @param r_buf a buffer to fill. Initially gets filled with zeroes,
* then its sin6_port, sin6_family and sin6_addr are set appropriately.
- * @return GNUNET_OK if conversion succeded. GNUNET_SYSERR otherwise, in which
- * case the contents of r_buf are undefined.
+ * @return #GNUNET_OK if conversion succeded.
+ * #GNUNET_SYSERR otherwise, in which
+ * case the contents of @a r_buf are undefined.
*/
int
-GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr,
+GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr,
uint16_t addrlen,
struct sockaddr_in6 *r_buf)
{
@@ -1077,10 +1264,11 @@ GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr,
int ret;
char *port_colon;
unsigned int port;
+ char dummy[2];
if (addrlen < 6)
- return GNUNET_SYSERR;
- memcpy (zbuf, zt_addr, addrlen);
+ return GNUNET_SYSERR;
+ GNUNET_memcpy (zbuf, zt_addr, addrlen);
if ('[' != zbuf[0])
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
@@ -1101,7 +1289,10 @@ GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr,
_("IPv6 address did contain ']' before ':' to separate port number\n"));
return GNUNET_SYSERR;
}
- ret = SSCANF (port_colon, ":%u", &port);
+ ret = SSCANF (port_colon,
+ ":%u%1s",
+ &port,
+ dummy);
if ( (1 != ret) || (port > 65535) )
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
@@ -1131,24 +1322,34 @@ GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr,
/**
* Tries to convert 'zt_addr' string to an IPv4 address.
* The string is expected to have the format "1.2.3.4:80".
- *
+ *
* @param zt_addr 0-terminated string. May be mangled by the function.
- * @param addrlen length of zt_addr (not counting 0-terminator).
+ * @param addrlen length of @a zt_addr (not counting 0-terminator).
* @param r_buf a buffer to fill.
- * @return GNUNET_OK if conversion succeded. GNUNET_SYSERR otherwise, in which case
- * the contents of r_buf are undefined.
+ * @return #GNUNET_OK if conversion succeded.
+ * #GNUNET_SYSERR otherwise, in which case
+ * the contents of @a r_buf are undefined.
*/
int
-GNUNET_STRINGS_to_address_ipv4 (const char *zt_addr, uint16_t addrlen,
+GNUNET_STRINGS_to_address_ipv4 (const char *zt_addr,
+ uint16_t addrlen,
struct sockaddr_in *r_buf)
{
unsigned int temps[4];
unsigned int port;
unsigned int cnt;
+ char dummy[2];
if (addrlen < 9)
return GNUNET_SYSERR;
- cnt = SSCANF (zt_addr, "%u.%u.%u.%u:%u", &temps[0], &temps[1], &temps[2], &temps[3], &port);
+ cnt = SSCANF (zt_addr,
+ "%u.%u.%u.%u:%u%1s",
+ &temps[0],
+ &temps[1],
+ &temps[2],
+ &temps[3],
+ &port,
+ dummy);
if (5 != cnt)
return GNUNET_SYSERR;
for (cnt = 0; cnt < 4; cnt++)
@@ -1168,33 +1369,94 @@ GNUNET_STRINGS_to_address_ipv4 (const char *zt_addr, uint16_t addrlen,
/**
- * Tries to convert 'addr' string to an IP (v4 or v6) address.
+ * Tries to convert @a addr string to an IP (v4 or v6) address.
* Will automatically decide whether to treat 'addr' as v4 or v6 address.
- *
+ *
* @param addr a string, may not be 0-terminated.
- * @param addrlen number of bytes in addr (if addr is 0-terminated,
+ * @param addrlen number of bytes in @a addr (if addr is 0-terminated,
* 0-terminator should not be counted towards addrlen).
* @param r_buf a buffer to fill.
- * @return GNUNET_OK if conversion succeded. GNUNET_SYSERR otherwise, in which
- * case the contents of r_buf are undefined.
+ * @return #GNUNET_OK if conversion succeded. #GNUNET_SYSERR otherwise, in which
+ * case the contents of @a r_buf are undefined.
*/
int
-GNUNET_STRINGS_to_address_ip (const char *addr,
+GNUNET_STRINGS_to_address_ip (const char *addr,
uint16_t addrlen,
struct sockaddr_storage *r_buf)
{
if (addr[0] == '[')
- return GNUNET_STRINGS_to_address_ipv6 (addr, addrlen, (struct sockaddr_in6 *) r_buf);
- return GNUNET_STRINGS_to_address_ipv4 (addr, addrlen, (struct sockaddr_in *) r_buf);
+ return GNUNET_STRINGS_to_address_ipv6 (addr,
+ addrlen,
+ (struct sockaddr_in6 *) r_buf);
+ return GNUNET_STRINGS_to_address_ipv4 (addr,
+ addrlen,
+ (struct sockaddr_in *) r_buf);
+}
+
+
+/**
+ * Parse an address given as a string into a
+ * `struct sockaddr`.
+ *
+ * @param addr the address
+ * @param[out] af set to the parsed address family (i.e. AF_INET)
+ * @param[out] sa set to the parsed address
+ * @return 0 on error, otherwise number of bytes in @a sa
+ */
+size_t
+GNUNET_STRINGS_parse_socket_addr (const char *addr,
+ uint8_t *af,
+ struct sockaddr **sa)
+{
+ char *cp = GNUNET_strdup (addr);
+
+ *af = AF_UNSPEC;
+ if ('[' == *addr)
+ {
+ /* IPv6 */
+ *sa = GNUNET_malloc (sizeof (struct sockaddr_in6));
+ if (GNUNET_OK !=
+ GNUNET_STRINGS_to_address_ipv6 (cp,
+ strlen (cp),
+ (struct sockaddr_in6 *) *sa))
+ {
+ GNUNET_free (*sa);
+ *sa = NULL;
+ GNUNET_free (cp);
+ return 0;
+ }
+ *af = AF_INET6;
+ GNUNET_free (cp);
+ return sizeof (struct sockaddr_in6);
+ }
+ else
+ {
+ /* IPv4 */
+ *sa = GNUNET_malloc (sizeof (struct sockaddr_in));
+ if (GNUNET_OK !=
+ GNUNET_STRINGS_to_address_ipv4 (cp,
+ strlen (cp),
+ (struct sockaddr_in *) *sa))
+ {
+ GNUNET_free (*sa);
+ *sa = NULL;
+ GNUNET_free (cp);
+ return 0;
+ }
+ *af = AF_INET;
+ GNUNET_free (cp);
+ return sizeof (struct sockaddr_in);
+ }
}
/**
* Makes a copy of argv that consists of a single memory chunk that can be
- * freed with a single call to GNUNET_free ();
+ * freed with a single call to GNUNET_free();
*/
static char *const *
-_make_continuous_arg_copy (int argc, char *const *argv)
+_make_continuous_arg_copy (int argc,
+ char *const *argv)
{
size_t argvsize = 0;
int i;
@@ -1221,16 +1483,19 @@ _make_continuous_arg_copy (int argc, char *const *argv)
* other than W32.
* Returned argv has u8argv[u8argc] == NULL.
* Returned argv is a single memory block, and can be freed with a single
- * GNUNET_free () call.
+ * GNUNET_free() call.
*
* @param argc argc (as given by main())
* @param argv argv (as given by main())
* @param u8argc a location to store new argc in (though it's th same as argc)
* @param u8argv a location to store new argv in
- * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
*/
int
-GNUNET_STRINGS_get_utf8_args (int argc, char *const *argv, int *u8argc, char *const **u8argv)
+GNUNET_STRINGS_get_utf8_args (int argc,
+ char *const *argv,
+ int *u8argc,
+ char *const **u8argv)
{
#if WINDOWS
wchar_t *wcmd;
@@ -1253,7 +1518,7 @@ GNUNET_STRINGS_get_utf8_args (int argc, char *const *argv, int *u8argc, char *co
size_t strl;
/* Hopefully it will allocate us NUL-terminated strings... */
split_u8argv[i] = (char *) u16_to_u8 (wargv[i], wcslen (wargv[i]) + 1, NULL, &strl);
- if (split_u8argv == NULL)
+ if (NULL == split_u8argv[i])
{
int j;
for (j = 0; j < i; j++)
@@ -1279,4 +1544,557 @@ GNUNET_STRINGS_get_utf8_args (int argc, char *const *argv, int *u8argc, char *co
#endif
}
+
+/**
+ * Parse the given port policy. The format is
+ * "[!]SPORT[-DPORT]".
+ *
+ * @param port_policy string to parse
+ * @param pp policy to fill in
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR if the
+ * @a port_policy is malformed
+ */
+static int
+parse_port_policy (const char *port_policy,
+ struct GNUNET_STRINGS_PortPolicy *pp)
+{
+ const char *pos;
+ int s;
+ int e;
+ char eol[2];
+
+ pos = port_policy;
+ if ('!' == *pos)
+ {
+ pp->negate_portrange = GNUNET_YES;
+ pos++;
+ }
+ if (2 == sscanf (pos,
+ "%u-%u%1s",
+ &s,
+ &e,
+ eol))
+ {
+ if ( (0 == s) ||
+ (s > 0xFFFF) ||
+ (e < s) ||
+ (e > 0xFFFF) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Port not in range\n"));
+ return GNUNET_SYSERR;
+ }
+ pp->start_port = (uint16_t) s;
+ pp->end_port = (uint16_t) e;
+ return GNUNET_OK;
+ }
+ if (1 == sscanf (pos,
+ "%u%1s",
+ &s,
+ eol))
+ {
+ if ( (0 == s) ||
+ (s > 0xFFFF) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Port not in range\n"));
+ return GNUNET_SYSERR;
+ }
+
+ pp->start_port = (uint16_t) s;
+ pp->end_port = (uint16_t) s;
+ return GNUNET_OK;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Malformed port policy `%s'\n"),
+ port_policy);
+ return GNUNET_SYSERR;
+}
+
+
+/**
+ * Parse an IPv4 network policy. The argument specifies a list of
+ * subnets. The format is
+ * (network[/netmask][:SPORT[-DPORT]];)* (no whitespace, must
+ * be terminated with a semicolon). The network must be given in
+ * dotted-decimal notation. The netmask can be given in CIDR notation
+ * (/16) or in dotted-decimal (/255.255.0.0).
+ *
+ * @param routeListX a string specifying the IPv4 subnets
+ * @return the converted list, terminated with all zeros;
+ * NULL if the synatx is flawed
+ */
+struct GNUNET_STRINGS_IPv4NetworkPolicy *
+GNUNET_STRINGS_parse_ipv4_policy (const char *routeListX)
+{
+ unsigned int count;
+ unsigned int i;
+ unsigned int j;
+ unsigned int len;
+ int cnt;
+ unsigned int pos;
+ unsigned int temps[8];
+ int slash;
+ struct GNUNET_STRINGS_IPv4NetworkPolicy *result;
+ int colon;
+ int end;
+ char *routeList;
+ char dummy[2];
+
+ if (NULL == routeListX)
+ return NULL;
+ len = strlen (routeListX);
+ if (0 == len)
+ return NULL;
+ routeList = GNUNET_strdup (routeListX);
+ count = 0;
+ for (i = 0; i < len; i++)
+ if (routeList[i] == ';')
+ count++;
+ result = GNUNET_malloc (sizeof (struct GNUNET_STRINGS_IPv4NetworkPolicy) * (count + 1));
+ i = 0;
+ pos = 0;
+ while (i < count)
+ {
+ for (colon = pos; ':' != routeList[colon]; colon++)
+ if ( (';' == routeList[colon]) ||
+ ('\0' == routeList[colon]) )
+ break;
+ for (end = colon; ';' != routeList[end]; end++)
+ if ('\0' == routeList[end])
+ break;
+ if ('\0' == routeList[end])
+ break;
+ routeList[end] = '\0';
+ if (':' == routeList[colon])
+ {
+ routeList[colon] = '\0';
+ if (GNUNET_OK != parse_port_policy (&routeList[colon + 1],
+ &result[i].pp))
+ break;
+ }
+ cnt =
+ SSCANF (&routeList[pos],
+ "%u.%u.%u.%u/%u.%u.%u.%u%1s",
+ &temps[0],
+ &temps[1],
+ &temps[2],
+ &temps[3],
+ &temps[4],
+ &temps[5],
+ &temps[6],
+ &temps[7],
+ dummy);
+ if (8 == cnt)
+ {
+ for (j = 0; j < 8; j++)
+ if (temps[j] > 0xFF)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid format for IP: `%s'\n"),
+ &routeList[pos]);
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL;
+ }
+ result[i].network.s_addr =
+ htonl ((temps[0] << 24) + (temps[1] << 16) + (temps[2] << 8) +
+ temps[3]);
+ result[i].netmask.s_addr =
+ htonl ((temps[4] << 24) + (temps[5] << 16) + (temps[6] << 8) +
+ temps[7]);
+ pos = end + 1;
+ i++;
+ continue;
+ }
+ /* try second notation */
+ cnt =
+ SSCANF (&routeList[pos],
+ "%u.%u.%u.%u/%u%1s",
+ &temps[0],
+ &temps[1],
+ &temps[2],
+ &temps[3],
+ &slash,
+ dummy);
+ if (5 == cnt)
+ {
+ for (j = 0; j < 4; j++)
+ if (temps[j] > 0xFF)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid format for IP: `%s'\n"),
+ &routeList[pos]);
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL;
+ }
+ result[i].network.s_addr =
+ htonl ((temps[0] << 24) + (temps[1] << 16) + (temps[2] << 8) +
+ temps[3]);
+ if ((slash <= 32) && (slash >= 0))
+ {
+ result[i].netmask.s_addr = 0;
+ while (slash > 0)
+ {
+ result[i].netmask.s_addr =
+ (result[i].netmask.s_addr >> 1) + 0x80000000;
+ slash--;
+ }
+ result[i].netmask.s_addr = htonl (result[i].netmask.s_addr);
+ pos = end + 1;
+ i++;
+ continue;
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid network notation ('/%d' is not legal in IPv4 CIDR)."),
+ slash);
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL; /* error */
+ }
+ }
+ /* try third notation */
+ slash = 32;
+ cnt =
+ SSCANF (&routeList[pos],
+ "%u.%u.%u.%u%1s",
+ &temps[0],
+ &temps[1],
+ &temps[2],
+ &temps[3],
+ dummy);
+ if (4 == cnt)
+ {
+ for (j = 0; j < 4; j++)
+ if (temps[j] > 0xFF)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid format for IP: `%s'\n"),
+ &routeList[pos]);
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL;
+ }
+ result[i].network.s_addr =
+ htonl ((temps[0] << 24) + (temps[1] << 16) + (temps[2] << 8) +
+ temps[3]);
+ result[i].netmask.s_addr = 0;
+ while (slash > 0)
+ {
+ result[i].netmask.s_addr = (result[i].netmask.s_addr >> 1) + 0x80000000;
+ slash--;
+ }
+ result[i].netmask.s_addr = htonl (result[i].netmask.s_addr);
+ pos = end + 1;
+ i++;
+ continue;
+ }
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid format for IP: `%s'\n"),
+ &routeList[pos]);
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL; /* error */
+ }
+ if (pos < strlen (routeList))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid format: `%s'\n"),
+ &routeListX[pos]);
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL; /* oops */
+ }
+ GNUNET_free (routeList);
+ return result; /* ok */
+}
+
+
+/**
+ * Parse an IPv6 network policy. The argument specifies a list of
+ * subnets. The format is (network[/netmask[:SPORT[-DPORT]]];)*
+ * (no whitespace, must be terminated with a semicolon). The network
+ * must be given in colon-hex notation. The netmask must be given in
+ * CIDR notation (/16) or can be omitted to specify a single host.
+ * Note that the netmask is mandatory if ports are specified.
+ *
+ * @param routeListX a string specifying the policy
+ * @return the converted list, 0-terminated, NULL if the synatx is flawed
+ */
+struct GNUNET_STRINGS_IPv6NetworkPolicy *
+GNUNET_STRINGS_parse_ipv6_policy (const char *routeListX)
+{
+ unsigned int count;
+ unsigned int i;
+ unsigned int len;
+ unsigned int pos;
+ int start;
+ int slash;
+ int ret;
+ char *routeList;
+ struct GNUNET_STRINGS_IPv6NetworkPolicy *result;
+ unsigned int bits;
+ unsigned int off;
+ int save;
+ int colon;
+ char dummy[2];
+
+ if (NULL == routeListX)
+ return NULL;
+ len = strlen (routeListX);
+ if (0 == len)
+ return NULL;
+ routeList = GNUNET_strdup (routeListX);
+ count = 0;
+ for (i = 0; i < len; i++)
+ if (';' == routeList[i])
+ count++;
+ if (';' != routeList[len - 1])
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid network notation (does not end with ';': `%s')\n"),
+ routeList);
+ GNUNET_free (routeList);
+ return NULL;
+ }
+
+ result = GNUNET_malloc (sizeof (struct GNUNET_STRINGS_IPv6NetworkPolicy) * (count + 1));
+ i = 0;
+ pos = 0;
+ while (i < count)
+ {
+ start = pos;
+ while (';' != routeList[pos])
+ pos++;
+ slash = pos;
+ while ((slash >= start) && (routeList[slash] != '/'))
+ slash--;
+
+ if (slash < start)
+ {
+ memset (&result[i].netmask,
+ 0xFF,
+ sizeof (struct in6_addr));
+ slash = pos;
+ }
+ else
+ {
+ routeList[pos] = '\0';
+ for (colon = pos; ':' != routeList[colon]; colon--)
+ if ('/' == routeList[colon])
+ break;
+ if (':' == routeList[colon])
+ {
+ routeList[colon] = '\0';
+ if (GNUNET_OK != parse_port_policy (&routeList[colon + 1],
+ &result[i].pp))
+ {
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL;
+ }
+ }
+ ret = inet_pton (AF_INET6, &routeList[slash + 1], &result[i].netmask);
+ if (ret <= 0)
+ {
+ save = errno;
+ if ( (1 != SSCANF (&routeList[slash + 1],
+ "%u%1s",
+ &bits,
+ dummy)) ||
+ (bits > 128) )
+ {
+ if (0 == ret)
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Wrong format `%s' for netmask\n"),
+ &routeList[slash + 1]);
+ else
+ {
+ errno = save;
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "inet_pton");
+ }
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL;
+ }
+ off = 0;
+ while (bits > 8)
+ {
+ result[i].netmask.s6_addr[off++] = 0xFF;
+ bits -= 8;
+ }
+ while (bits > 0)
+ {
+ result[i].netmask.s6_addr[off] =
+ (result[i].netmask.s6_addr[off] >> 1) + 0x80;
+ bits--;
+ }
+ }
+ }
+ routeList[slash] = '\0';
+ ret = inet_pton (AF_INET6, &routeList[start], &result[i].network);
+ if (ret <= 0)
+ {
+ if (0 == ret)
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Wrong format `%s' for network\n"),
+ &routeList[slash + 1]);
+ else
+ LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR,
+ "inet_pton");
+ GNUNET_free (result);
+ GNUNET_free (routeList);
+ return NULL;
+ }
+ pos++;
+ i++;
+ }
+ GNUNET_free (routeList);
+ return result;
+}
+
+
+
+/** ******************** Base64 encoding ***********/
+
+#define FILLCHAR '='
+static char *cvt =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz" "0123456789+/";
+
+
+/**
+ * Encode into Base64.
+ *
+ * @param in the data to encode
+ * @param len the length of the input
+ * @param output where to write the output (*output should be NULL,
+ * is allocated)
+ * @return the size of the output
+ */
+size_t
+GNUNET_STRINGS_base64_encode (const void *in,
+ size_t len,
+ char **output)
+{
+ const char *data = in;
+ size_t ret;
+ char *opt;
+
+ ret = 0;
+ opt = GNUNET_malloc (2 + (len * 4 / 3) + 8);
+ for (size_t i = 0; i < len; ++i)
+ {
+ char c;
+
+ c = (data[i] >> 2) & 0x3f;
+ opt[ret++] = cvt[(int) c];
+ c = (data[i] << 4) & 0x3f;
+ if (++i < len)
+ c |= (data[i] >> 4) & 0x0f;
+ opt[ret++] = cvt[(int) c];
+ if (i < len)
+ {
+ c = (data[i] << 2) & 0x3f;
+ if (++i < len)
+ c |= (data[i] >> 6) & 0x03;
+ opt[ret++] = cvt[(int) c];
+ }
+ else
+ {
+ ++i;
+ opt[ret++] = FILLCHAR;
+ }
+ if (i < len)
+ {
+ c = data[i] & 0x3f;
+ opt[ret++] = cvt[(int) c];
+ }
+ else
+ {
+ opt[ret++] = FILLCHAR;
+ }
+ }
+ *output = opt;
+ return ret;
+}
+
+#define cvtfind(a)( (((a) >= 'A')&&((a) <= 'Z'))? (a)-'A'\
+ :(((a)>='a')&&((a)<='z')) ? (a)-'a'+26\
+ :(((a)>='0')&&((a)<='9')) ? (a)-'0'+52\
+ :((a) == '+') ? 62\
+ :((a) == '/') ? 63 : -1)
+
+
+/**
+ * Decode from Base64.
+ *
+ * @param data the data to encode
+ * @param len the length of the input
+ * @param output where to write the output (*output should be NULL,
+ * is allocated)
+ * @return the size of the output
+ */
+size_t
+GNUNET_STRINGS_base64_decode (const char *data,
+ size_t len,
+ void **out)
+{
+ char *output;
+ size_t ret = 0;
+
+#define CHECK_CRLF while (data[i] == '\r' || data[i] == '\n') {\
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK, "ignoring CR/LF\n"); \
+ i++; \
+ if (i >= len) goto END; \
+ }
+
+ output = GNUNET_malloc ((len * 3 / 4) + 8);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "base64_decode decoding len=%d\n",
+ (int) len);
+ for (size_t i = 0; i < len; ++i)
+ {
+ char c;
+ char c1;
+
+ CHECK_CRLF;
+ if (FILLCHAR == data[i])
+ break;
+ c = (char) cvtfind (data[i]);
+ ++i;
+ CHECK_CRLF;
+ c1 = (char) cvtfind (data[i]);
+ c = (c << 2) | ((c1 >> 4) & 0x3);
+ output[ret++] = c;
+ if (++i < len)
+ {
+ CHECK_CRLF;
+ c = data[i];
+ if (FILLCHAR == c)
+ break;
+ c = (char) cvtfind (c);
+ c1 = ((c1 << 4) & 0xf0) | ((c >> 2) & 0xf);
+ output[ret++] = c1;
+ }
+ if (++i < len)
+ {
+ CHECK_CRLF;
+ c1 = data[i];
+ if (FILLCHAR == c1)
+ break;
+
+ c1 = (char) cvtfind (c1);
+ c = ((c << 6) & 0xc0) | c1;
+ output[ret++] = c;
+ }
+ }
+END:
+ *out = output;
+ return ret;
+}
+
+
/* end of strings.c */