* @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,
*
* @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,
{ "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},
{ "a", 31536000000000LL /* year */ },
{ NULL, 0}
};
return GNUNET_SYSERR;
t = mktime (&tv);
atime->abs_value_us = (uint64_t) ((uint64_t) t * 1000LL * 1000LL);
-#if LINUX
- atime->abs_value_us -= 1000LL * 1000LL * timezone;
-#elif defined 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;
}
* @param input input string
* @param len number of bytes in @a input
* @param input_charset character set used for @a input
- * @param ouptut_charset desired character set for the return value
+ * @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.
/**
- * 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';
+ 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);
+ memcpy (output, tmp_in, len);
+ output[len] = '\0';
+ free (tmp_in);
}
* 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)
if (t.abs_value_us == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
return _("end of time");
tt = t.abs_value_us / 1000LL / 1000LL;
- tp = gmtime (&tt);
+ 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;
}
return a - '0';
if ((a >= 'A') && (a <= 'V'))
return (a - 'A' + 10);
+ if ((a >= 'a') && (a <= 'v'))
+ return (a - 'a' + 10);
return -1;
}
* 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 size of 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,
/**
- * 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;
/**
- * 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,
* 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,
* 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,
/**
- * 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
+ * @return #GNUNET_OK if conversion succeded. GNUNET_SYSERR otherwise, in which
* case the contents of r_buf are undefined.
*/
int
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);
}
/**
* 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;
* 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)
#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
+ * <tt>(network[/netmask][:SPORT[-DPORT]];)*</tt> (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;
+
+ 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",
+ &temps[0],
+ &temps[1],
+ &temps[2],
+ &temps[3],
+ &temps[4],
+ &temps[5],
+ &temps[6],
+ &temps[7]);
+ 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",
+ &temps[0],
+ &temps[1],
+ &temps[2],
+ &temps[3],
+ &slash);
+ 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",
+ &temps[0],
+ &temps[1],
+ &temps[2],
+ &temps[3]);
+ 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 <tt>(network[/netmask[:SPORT[-DPORT]]];)*</tt>
+ * (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;
+
+ 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", &bits)) || (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 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_encode (const char *data,
+ size_t len,
+ char **output)
+{
+ size_t i;
+ char c;
+ size_t ret;
+ char *opt;
+
+ ret = 0;
+ opt = GNUNET_malloc (2 + (len * 4 / 3) + 8);
+ *output = opt;
+ for (i = 0; i < len; ++i)
+ {
+ 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;
+ }
+ }
+ opt[ret++] = FILLCHAR;
+ 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, char **output)
+{
+ size_t i;
+ char c;
+ char c1;
+ 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 (i = 0; i < len; ++i)
+ {
+ 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:
+ return ret;
+}
+
+
+
+
+
/* end of strings.c */
projects / oweals / gnunet.git / blobdiff