#endif
#include "gnunet_common.h"
#include "gnunet_strings_lib.h"
+#include <unicase.h>
+#include <unistr.h>
+
+#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
+
+#define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", syscall)
/**
* (or number of bytes that would have been written)
*/
size_t
-GNUNET_STRINGS_buffer_fill (char *buffer,
- size_t size, unsigned int count, ...)
+GNUNET_STRINGS_buffer_fill (char *buffer, size_t size, unsigned int count, ...)
{
size_t needed;
size_t slen;
needed = 0;
va_start (ap, count);
while (count > 0)
+ {
+ s = va_arg (ap, const char *);
+
+ slen = strlen (s) + 1;
+ if (buffer != NULL)
{
- s = va_arg (ap, const char *);
- slen = strlen (s) + 1;
- if (buffer != NULL)
- {
- GNUNET_assert (needed + slen <= size);
- memcpy (&buffer[needed], s, slen);
- }
- needed += slen;
- count--;
+ GNUNET_assert (needed + slen <= size);
+ memcpy (&buffer[needed], s, slen);
}
+ needed += slen;
+ count--;
+ }
va_end (ap);
return needed;
}
* in the buffer, or 0 on error.
*/
unsigned int
-GNUNET_STRINGS_buffer_tokenize (const char *buffer,
- size_t size, unsigned int count, ...)
+GNUNET_STRINGS_buffer_tokenize (const char *buffer, size_t size,
+ unsigned int count, ...)
{
unsigned int start;
unsigned int needed;
needed = 0;
va_start (ap, count);
while (count > 0)
+ {
+ r = va_arg (ap, const char **);
+
+ start = needed;
+ while ((needed < size) && (buffer[needed] != '\0'))
+ needed++;
+ if (needed == size)
{
- r = va_arg (ap, const char **);
- start = needed;
- while ((needed < size) && (buffer[needed] != '\0'))
- needed++;
- if (needed == size)
- {
- va_end (ap);
- return 0; /* error */
- }
- *r = &buffer[start];
- needed++; /* skip 0-termination */
- count--;
+ va_end (ap);
+ return 0; /* error */
}
+ *r = &buffer[start];
+ needed++; /* skip 0-termination */
+ count--;
+ }
va_end (ap);
return needed;
}
char *ret;
if (size > 5 * 1024)
+ {
+ size = size / 1024;
+ unit = "KiB";
+ if (size > 5 * 1024)
{
size = size / 1024;
- unit = _( /* size unit */ "KiB");
+ unit = "MiB";
if (size > 5 * 1024)
+ {
+ size = size / 1024;
+ unit = "GiB";
+ if (size > 5 * 1024)
{
size = size / 1024;
- unit = _( /* size unit */ "MiB");
- if (size > 5 * 1024)
- {
- size = size / 1024;
- unit = _( /* size unit */ "GiB");
- if (size > 5 * 1024)
- {
- size = size / 1024;
- unit = _( /* size unit */ "TiB");
- }
- }
+ unit = "TiB";
}
+ }
}
+ }
ret = GNUNET_malloc (32);
GNUNET_snprintf (ret, 32, "%llu %s", size, unit);
return ret;
}
+/**
+ * Unit conversion table entry for 'convert_with_table'.
+ */
+struct ConversionTable
+{
+ /**
+ * Name of the unit (or NULL for end of table).
+ */
+ const char *name;
+
+ /**
+ * Factor to apply for this unit.
+ */
+ unsigned long long value;
+};
+
+
+/**
+ * Convert a string of the form "4 X 5 Y" into a numeric value
+ * by interpreting "X" and "Y" as units and then multiplying
+ * the numbers with the values associated with the respective
+ * unit from the conversion table.
+ *
+ * @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
+ */
+static int
+convert_with_table (const char *input,
+ const struct ConversionTable *table,
+ unsigned long long *output)
+{
+ unsigned long long ret;
+ char *in;
+ const char *tok;
+ unsigned long long last;
+ unsigned int i;
+
+ ret = 0;
+ last = 0;
+ in = GNUNET_strdup (input);
+ for (tok = strtok (in, " "); tok != NULL; tok = strtok (NULL, " "))
+ {
+ i = 0;
+ while ((table[i].name != NULL) && (0 != strcasecmp (table[i].name, tok)))
+ i++;
+ if (table[i].name != NULL)
+ last *= table[i].value;
+ else
+ {
+ ret += last;
+ last = 0;
+ if (1 != SSCANF (tok, "%llu", &last))
+ {
+ GNUNET_free (in);
+ return GNUNET_SYSERR; /* expected number */
+ }
+ }
+ }
+ ret += last;
+ *output = ret;
+ GNUNET_free (in);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Convert a given fancy human-readable size to bytes.
+ *
+ * @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
+ */
+int
+GNUNET_STRINGS_fancy_size_to_bytes (const char *fancy_size,
+ unsigned long long *size)
+{
+ static const struct ConversionTable table[] =
+ {
+ { "B", 1},
+ { "KiB", 1024},
+ { "kB", 1000},
+ { "MiB", 1024 * 1024},
+ { "MB", 1000 * 1000},
+ { "GiB", 1024 * 1024 * 1024},
+ { "GB", 1000 * 1000 * 1000},
+ { "TiB", 1024LL * 1024LL * 1024LL * 1024LL},
+ { "TB", 1000LL * 1000LL * 1000LL * 1024LL},
+ { "PiB", 1024LL * 1024LL * 1024LL * 1024LL * 1024LL},
+ { "PB", 1000LL * 1000LL * 1000LL * 1024LL * 1000LL},
+ { "EiB", 1024LL * 1024LL * 1024LL * 1024LL * 1024LL * 1024LL},
+ { "EB", 1000LL * 1000LL * 1000LL * 1024LL * 1000LL * 1000LL},
+ { NULL, 0}
+ };
+
+ return convert_with_table (fancy_size,
+ table,
+ size);
+}
+
+
+/**
+ * Convert a given fancy human-readable time to our internal
+ * representation.
+ *
+ * @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
+ */
+int
+GNUNET_STRINGS_fancy_time_to_relative (const char *fancy_time,
+ struct GNUNET_TIME_Relative *rtime)
+{
+ 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 */ },
+ { NULL, 0}
+ };
+ int ret;
+ unsigned long long val;
+
+ if (0 == strcasecmp ("forever", fancy_time))
+ {
+ *rtime = GNUNET_TIME_UNIT_FOREVER_REL;
+ return GNUNET_OK;
+ }
+ ret = convert_with_table (fancy_time,
+ table,
+ &val);
+ rtime->rel_value = (uint64_t) val;
+ return ret;
+}
+
+
+/**
+ * Convert a given fancy human-readable time to our internal
+ * representation.
+ *
+ * @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
+ */
+int
+GNUNET_STRINGS_fancy_time_to_absolute (const char *fancy_time,
+ struct GNUNET_TIME_Absolute *atime)
+{
+ struct tm tv;
+ time_t t;
+
+ if (0 == strcasecmp ("end of time", fancy_time))
+ {
+ *atime = GNUNET_TIME_UNIT_FOREVER_ABS;
+ return GNUNET_OK;
+ }
+ memset (&tv, 0, sizeof (tv));
+ if ( (NULL == strptime (fancy_time, "%a %b %d %H:%M:%S %Y", &tv)) &&
+ (NULL == strptime (fancy_time, "%c", &tv)) &&
+ (NULL == strptime (fancy_time, "%Ec", &tv)) &&
+ (NULL == strptime (fancy_time, "%Y-%m-%d %H:%M:%S", &tv)) &&
+ (NULL == strptime (fancy_time, "%Y-%m-%d %H:%M", &tv)) &&
+ (NULL == strptime (fancy_time, "%x", &tv)) &&
+ (NULL == strptime (fancy_time, "%Ex", &tv)) &&
+ (NULL == strptime (fancy_time, "%Y-%m-%d", &tv)) &&
+ (NULL == strptime (fancy_time, "%Y-%m", &tv)) &&
+ (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
+ return GNUNET_OK;
+}
+
+
/**
* Convert the len characters long character sequence
- * given in input that is in the given charset
- * to UTF-8.
+ * given in input that is in the given input charset
+ * to a string in given output charset.
* @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_conv (const char *input, size_t len, const char *input_charset, const char *output_charset)
{
char *ret;
+
#if ENABLE_NLS && HAVE_ICONV
size_t tmpSize;
size_t finSize;
char *itmp;
iconv_t cd;
- cd = iconv_open ("UTF-8", charset);
+ cd = iconv_open (output_charset, input_charset);
if (cd == (iconv_t) - 1)
- {
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "iconv_open");
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Character set requested was `%s'\n"), charset);
- ret = GNUNET_malloc (len + 1);
- memcpy (ret, input, len);
- ret[len] = '\0';
- return ret;
- }
+ {
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "iconv_open");
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("Character sets requested were `%s'->`%s'\n"),
+ input_charset, output_charset);
+ ret = GNUNET_malloc (len + 1);
+ memcpy (ret, input, len);
+ ret[len] = '\0';
+ return ret;
+ }
tmpSize = 3 * len + 4;
tmp = GNUNET_malloc (tmpSize);
itmp = tmp;
(char **) &input,
#endif
&len, &itmp, &finSize) == SIZE_MAX)
- {
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "iconv");
- iconv_close (cd);
- GNUNET_free (tmp);
- ret = GNUNET_malloc (len + 1);
- memcpy (ret, input, len);
- ret[len] = '\0';
- return ret;
- }
+ {
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "iconv");
+ iconv_close (cd);
+ GNUNET_free (tmp);
+ ret = GNUNET_malloc (len + 1);
+ memcpy (ret, input, len);
+ ret[len] = '\0';
+ return ret;
+ }
ret = GNUNET_malloc (tmpSize - finSize + 1);
memcpy (ret, tmp, tmpSize - finSize);
ret[tmpSize - finSize] = '\0';
GNUNET_free (tmp);
if (0 != iconv_close (cd))
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "iconv_close");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "iconv_close");
return ret;
#else
ret = GNUNET_malloc (len + 1);
}
+/**
+ * Convert the len characters long character sequence
+ * given in input that is in the given charset
+ * to UTF-8.
+ * @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)
+{
+ return GNUNET_STRINGS_conv (input, len, charset, "UTF-8");
+}
+
+
+/**
+ * Convert the len bytes-long UTF-8 string
+ * given in input to the given charset.
+ *
+ * @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)
+{
+ return GNUNET_STRINGS_conv (input, len, "UTF-8", charset);
+}
+
+
+/**
+ * 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)
+{
+ 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';
+ free(tmp_in);
+}
+
+
+/**
+ * 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)
+{
+ 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);
+}
+
+
/**
* Complete filename (a la shell) from abbrevition.
* @param fil the name of the file, may contain ~/ or
/* absolute path, just copy */
return GNUNET_strdup (fil);
if (fil[0] == '~')
+ {
+ fm = getenv ("HOME");
+ if (fm == NULL)
{
- fm = getenv ("HOME");
- if (fm == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _
- ("Failed to expand `$HOME': environment variable `HOME' not set"));
- return NULL;
- }
- fm = GNUNET_strdup (fm);
- /* do not copy '~' */
- fil_ptr = fil + 1;
-
- /* skip over dir seperator to be consistent */
- if (fil_ptr[0] == DIR_SEPARATOR)
- fil_ptr++;
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to expand `$HOME': environment variable `HOME' not set"));
+ return NULL;
}
+ fm = GNUNET_strdup (fm);
+ /* do not copy '~' */
+ fil_ptr = fil + 1;
+
+ /* skip over dir seperator to be consistent */
+ if (fil_ptr[0] == DIR_SEPARATOR)
+ fil_ptr++;
+ }
else
+ {
+ /* relative path */
+ fil_ptr = fil;
+ len = 512;
+ fm = NULL;
+ while (1)
{
- /* relative path */
- fil_ptr = fil;
- len = 512;
- fm = NULL;
- while (1)
- {
- buffer = GNUNET_malloc (len);
- if (getcwd (buffer, len) != NULL)
- {
- fm = buffer;
- break;
- }
- if ((errno == ERANGE) && (len < 1024 * 1024 * 4))
- {
- len *= 2;
- GNUNET_free (buffer);
- continue;
- }
- GNUNET_free (buffer);
- break;
- }
- if (fm == NULL)
- {
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "getcwd");
- buffer = getenv ("PWD"); /* alternative */
- if (buffer != NULL)
- fm = GNUNET_strdup (buffer);
- }
- if (fm == NULL)
- fm = GNUNET_strdup ("./"); /* give up */
+ buffer = GNUNET_malloc (len);
+ if (getcwd (buffer, len) != NULL)
+ {
+ fm = buffer;
+ break;
+ }
+ if ((errno == ERANGE) && (len < 1024 * 1024 * 4))
+ {
+ len *= 2;
+ GNUNET_free (buffer);
+ continue;
+ }
+ GNUNET_free (buffer);
+ break;
+ }
+ if (fm == NULL)
+ {
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "getcwd");
+ buffer = getenv ("PWD"); /* alternative */
+ if (buffer != NULL)
+ fm = GNUNET_strdup (buffer);
}
+ 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_snprintf (buffer, n, "%s%s%s", fm,
(fm[strlen (fm) - 1] ==
DIR_SEPARATOR) ? "" : DIR_SEPARATOR_STR, fil_ptr);
GNUNET_free (fm);
fn = GNUNET_malloc (MAX_PATH + 1);
if ((lRet = plibc_conv_to_win_path (fil, fn)) != ERROR_SUCCESS)
- {
- SetErrnoFromWinError (lRet);
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING,
- "plibc_conv_to_win_path");
- return NULL;
- }
+ {
+ SetErrnoFromWinError (lRet);
+ 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))
+ {
+ char szCurDir[MAX_PATH + 1];
+
+ lRet = GetCurrentDirectory (MAX_PATH + 1, szCurDir);
+ if (lRet + strlen (fn) + 1 > (MAX_PATH + 1))
{
- char szCurDir[MAX_PATH + 1];
- lRet = GetCurrentDirectory (MAX_PATH + 1, szCurDir);
- if (lRet + strlen (fn) + 1 > (MAX_PATH + 1))
- {
- SetErrnoFromWinError (ERROR_BUFFER_OVERFLOW);
- GNUNET_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_free (fn);
- fn = buffer;
+ SetErrnoFromWinError (ERROR_BUFFER_OVERFLOW);
+ 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_free (fn);
+ fn = buffer;
+ }
return fn;
#endif
/**
* Give relative time in human-readable fancy format.
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
*
* @param delta time in milli seconds
+ * @param do_round are we allowed to round a bit?
* @return time as human-readable string
*/
-char *
-GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta)
+const char *
+GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta,
+ int do_round)
{
+ static char buf[128];
const char *unit = _( /* time unit */ "ms");
- char *ret;
uint64_t dval = delta.rel_value;
if (delta.rel_value == GNUNET_TIME_UNIT_FOREVER_REL.rel_value)
- return GNUNET_strdup (_("eternity"));
- if (dval > 5 * 1000)
+ return _("forever");
+ if ( ( (GNUNET_YES == do_round) &&
+ (dval > 5 * 1000) ) ||
+ (0 == (dval % 1000) ))
+ {
+ dval = dval / 1000;
+ unit = _( /* time unit */ "s");
+ if ( ( (GNUNET_YES == do_round) &&
+ (dval > 5 * 60) ) ||
+ (0 == (dval % 60) ) )
{
- dval = dval / 1000;
- unit = _( /* time unit */ "s");
- if (dval > 5 * 60)
- {
- dval = dval / 60;
- unit = _( /* time unit */ "m");
- if (dval > 5 * 60)
- {
- dval = dval / 60;
- unit = _( /* time unit */ "h");
- if (dval > 5 * 24)
- {
- dval = dval / 24;
- unit = _( /* time unit */ " days");
- }
- }
+ dval = dval / 60;
+ unit = _( /* time unit */ "m");
+ if ( ( (GNUNET_YES == do_round) &&
+ (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 / 24;
+ if (1 == dval)
+ unit = _( /* time unit */ "day");
+ else
+ unit = _( /* time unit */ "days");
}
+ }
}
- GNUNET_asprintf (&ret, "%llu %s", dval, unit);
- return ret;
+ }
+ GNUNET_snprintf (buf, sizeof (buf),
+ "%llu %s", dval, unit);
+ return buf;
}
/**
- * "man ctime_r", except for GNUnet time; also, unlike ctime, the
- * return value does not include the newline character.
+ * "asctime", except for GNUnet time.
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
*
* @param t time to convert
* @return absolute time in human-readable format
*/
-char *
+const char *
GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t)
{
+ static char buf[255];
time_t tt;
- char *ret;
+ struct tm *tp;
if (t.abs_value == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value)
return GNUNET_strdup (_("end of time"));
tt = t.abs_value / 1000;
-#ifdef ctime_r
- ret = ctime_r (&tt, GNUNET_malloc (32));
-#else
- ret = GNUNET_strdup (ctime (&tt));
+ tp = gmtime (&tt);
+ strftime (buf, sizeof (buf), "%a %b %d %H:%M:%S %Y", tp);
+ return GNUNET_strdup (buf);
+}
+
+
+/**
+ * "man basename"
+ * Returns a pointer to a part of filename (allocates nothing)!
+ *
+ * @param filename filename to extract basename from
+ * @return short (base) name of the file (that is, everything following the
+ * last directory separator in filename. If filename ends with a
+ * directory separator, the result will be a zero-length string.
+ * If filename has no directory separators, the result is filename
+ * itself.
+ */
+const char *
+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;
+ return short_fn;
+}
+
+
+/**
+ * Get the numeric value corresponding to a character.
+ *
+ * @param a a character
+ * @return corresponding numeric value
+ */
+static unsigned int
+getValue__ (unsigned char a)
+{
+ if ((a >= '0') && (a <= '9'))
+ return a - '0';
+ if ((a >= 'A') && (a <= 'V'))
+ return (a - 'A' + 10);
+ 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.
+ *
+ * @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.
+ */
+char *
+GNUNET_STRINGS_data_to_string (const unsigned char *data, size_t size, char *out, size_t out_size)
+{
+ /**
+ * 32 characters for encoding
+ */
+ static char *encTable__ = "0123456789ABCDEFGHIJKLMNOPQRSTUV";
+ unsigned int wpos;
+ unsigned int rpos;
+ unsigned int bits;
+ unsigned int vbit;
+
+ GNUNET_assert (data != NULL);
+ GNUNET_assert (out != NULL);
+ if (out_size < (((size*8) + ((size*8) % 5)) % 5))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ vbit = 0;
+ wpos = 0;
+ rpos = 0;
+ bits = 0;
+ while ((rpos < size) || (vbit > 0))
+ {
+ if ((rpos < size) && (vbit < 5))
+ {
+ bits = (bits << 8) | data[rpos++]; /* eat 8 more bits */
+ vbit += 8;
+ }
+ if (vbit < 5)
+ {
+ bits <<= (5 - vbit); /* zero-padding */
+ GNUNET_assert (vbit == ((size * 8) % 5));
+ vbit = 5;
+ }
+ if (wpos >= out_size)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ out[wpos++] = encTable__[(bits >> (vbit - 5)) & 31];
+ vbit -= 5;
+ }
+ if (wpos != out_size)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ GNUNET_assert (vbit == 0);
+ return &out[wpos];
+}
+
+
+/**
+ * Convert ASCII encoding back to data
+ * 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 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
+ */
+int
+GNUNET_STRINGS_string_to_data (const char *enc, size_t enclen,
+ unsigned char *out, size_t out_size)
+{
+ unsigned int rpos;
+ unsigned int wpos;
+ unsigned int bits;
+ unsigned int vbit;
+ int ret;
+ int shift;
+ int encoded_len = out_size * 8;
+ if (encoded_len % 5 > 0)
+ {
+ vbit = encoded_len % 5; /* padding! */
+ shift = 5 - vbit;
+ }
+ else
+ {
+ vbit = 0;
+ shift = 0;
+ }
+ 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)
+ {
+ GNUNET_assert (rpos > 0);
+ bits = ((ret = getValue__ (enc[--rpos])) << vbit) | bits;
+ if (-1 == ret)
+ return GNUNET_SYSERR;
+ vbit += 5;
+ if (vbit >= 8)
+ {
+ out[--wpos] = (unsigned char) bits;
+ bits >>= 8;
+ vbit -= 8;
+ }
+ }
+ GNUNET_assert (rpos == 0);
+ GNUNET_assert (vbit == 0);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Parse a path that might be an URI.
+ *
+ * @param path path to parse. Must be NULL-terminated.
+ * @param scheme_part a pointer to 'char *' where a pointer to a string that
+ * represents the URI scheme will be stored. Can be NULL. The string is
+ * allocated by the function, and should be freed by GNUNET_free() when
+ * it is no longer needed.
+ * @param path_part a pointer to 'const char *' where a pointer to the path
+ * part of the URI will be stored. Can be NULL. Points to the same block
+ * of memory as 'path', and thus must not be freed. Might point to '\0',
+ * if path part is zero-length.
+ * @return GNUNET_YES if it's an URI, GNUNET_NO otherwise. If 'path' is not
+ * an URI, '* scheme_part' and '*path_part' will remain unchanged
+ * (if they weren't NULL).
+ */
+int
+GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part,
+ const char **path_part)
+{
+ size_t len;
+ int i, end;
+ int pp_state = 0;
+ const char *post_scheme_part = NULL;
+ len = strlen (path);
+ for (end = 0, i = 0; !end && i < len; i++)
+ {
+ switch (pp_state)
+ {
+ case 0:
+ if (path[i] == ':' && i > 0)
+ {
+ pp_state += 1;
+ continue;
+ }
+ if (!((path[i] >= 'A' && path[i] <= 'Z') || (path[i] >= 'a' && path[i] <= 'z')
+ || (path[i] >= '0' && path[i] <= '9') || path[i] == '+' || path[i] == '-'
+ || (path[i] == '.')))
+ end = 1;
+ break;
+ case 1:
+ case 2:
+ if (path[i] == '/')
+ {
+ pp_state += 1;
+ continue;
+ }
+ end = 1;
+ break;
+ case 3:
+ post_scheme_part = &path[i];
+ end = 1;
+ break;
+ default:
+ end = 1;
+ }
+ }
+ if (post_scheme_part == NULL)
+ return GNUNET_NO;
+ if (scheme_part)
+ {
+ *scheme_part = GNUNET_malloc (post_scheme_part - path + 1);
+ memcpy (*scheme_part, path, post_scheme_part - path);
+ (*scheme_part)[post_scheme_part - path] = '\0';
+ }
+ if (path_part)
+ *path_part = post_scheme_part;
+ return GNUNET_YES;
+}
+
+
+/**
+ * Check whether '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
+ * 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_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.
+ */
+int
+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;
#endif
- ret[strlen (ret) - 1] = '\0';
- return ret;
+ const char *post_scheme_path;
+ int is_uri;
+ char * uri;
+ /* consider POSIX paths to be absolute too, even on W32,
+ * as plibc expansion will fix them for us.
+ */
+ if (filename[0] == '/')
+ return GNUNET_YES;
+ if (can_be_uri)
+ {
+ is_uri = GNUNET_STRINGS_parse_uri (filename, &uri, &post_scheme_path);
+ if (r_is_uri)
+ *r_is_uri = is_uri;
+ if (is_uri)
+ {
+ if (r_uri_scheme)
+ *r_uri_scheme = uri;
+ else
+ GNUNET_free_non_null (uri);
+#if WINDOWS
+ len = strlen(post_scheme_path);
+ /* Special check for file:///c:/blah
+ * We want to parse 'c:/', not '/c:/'
+ */
+ if (post_scheme_path[0] == '/' && len >= 3 && post_scheme_path[2] == ':')
+ post_scheme_path = &post_scheme_path[1];
+#endif
+ return GNUNET_STRINGS_path_is_absolute (post_scheme_path, GNUNET_NO, NULL, NULL);
+ }
+ }
+ else
+ {
+ is_uri = GNUNET_NO;
+ if (r_is_uri)
+ *r_is_uri = GNUNET_NO;
+ }
+#if WINDOWS
+ len = strlen (filename);
+ if (len >= 3 &&
+ ((filename[0] >= 'A' && filename[0] <= 'Z')
+ || (filename[0] >= 'a' && filename[0] <= 'z'))
+ && filename[1] == ':' && (filename[2] == '/' || filename[2] == '\\'))
+ return GNUNET_YES;
+#endif
+ return GNUNET_NO;
+}
+
+#if MINGW
+#define _IFMT 0170000 /* type of file */
+#define _IFLNK 0120000 /* symbolic link */
+#define S_ISLNK(m) (((m)&_IFMT) == _IFLNK)
+#endif
+
+
+/**
+ * Perform 'checks' on '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
+ */
+int
+GNUNET_STRINGS_check_filename (const char *filename,
+ enum GNUNET_STRINGS_FilenameCheck checks)
+{
+ struct stat st;
+ if ( (NULL == filename) || (filename[0] == '\0') )
+ return GNUNET_SYSERR;
+ if (0 != (checks & GNUNET_STRINGS_CHECK_IS_ABSOLUTE))
+ if (!GNUNET_STRINGS_path_is_absolute (filename, GNUNET_NO, NULL, NULL))
+ return GNUNET_NO;
+ if (0 != (checks & (GNUNET_STRINGS_CHECK_EXISTS
+ | GNUNET_STRINGS_CHECK_IS_DIRECTORY
+ | GNUNET_STRINGS_CHECK_IS_LINK)))
+ {
+ if (0 != STAT (filename, &st))
+ {
+ if (0 != (checks & GNUNET_STRINGS_CHECK_EXISTS))
+ return GNUNET_NO;
+ else
+ return GNUNET_SYSERR;
+ }
+ }
+ if (0 != (checks & GNUNET_STRINGS_CHECK_IS_DIRECTORY))
+ if (!S_ISDIR (st.st_mode))
+ return GNUNET_NO;
+ if (0 != (checks & GNUNET_STRINGS_CHECK_IS_LINK))
+ if (!S_ISLNK (st.st_mode))
+ return GNUNET_NO;
+ return GNUNET_YES;
+}
+
+
+/**
+ * Tries to convert '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 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.
+ */
+int
+GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr,
+ uint16_t addrlen,
+ struct sockaddr_in6 *r_buf)
+{
+ char zbuf[addrlen + 1];
+ int ret;
+ char *port_colon;
+ unsigned int port;
+
+ if (addrlen < 6)
+ return GNUNET_SYSERR;
+ memcpy (zbuf, zt_addr, addrlen);
+ if ('[' != zbuf[0])
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("IPv6 address did not start with `['\n"));
+ return GNUNET_SYSERR;
+ }
+ zbuf[addrlen] = '\0';
+ port_colon = strrchr (zbuf, ':');
+ if (NULL == port_colon)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("IPv6 address did contain ':' to separate port number\n"));
+ return GNUNET_SYSERR;
+ }
+ if (']' != *(port_colon - 1))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("IPv6 address did contain ']' before ':' to separate port number\n"));
+ return GNUNET_SYSERR;
+ }
+ ret = SSCANF (port_colon, ":%u", &port);
+ if ( (1 != ret) || (port > 65535) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("IPv6 address did contain a valid port number after the last ':'\n"));
+ return GNUNET_SYSERR;
+ }
+ *(port_colon-1) = '\0';
+ memset (r_buf, 0, sizeof (struct sockaddr_in6));
+ ret = inet_pton (AF_INET6, &zbuf[1], &r_buf->sin6_addr);
+ if (ret <= 0)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Invalid IPv6 address `%s': %s\n"),
+ &zbuf[1],
+ STRERROR (errno));
+ return GNUNET_SYSERR;
+ }
+ r_buf->sin6_port = htons (port);
+ r_buf->sin6_family = AF_INET6;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ r_buf->sin6_len = (u_char) sizeof (struct sockaddr_in6);
+#endif
+ return GNUNET_OK;
+}
+
+
+/**
+ * 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 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.
+ */
+int
+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;
+
+ if (addrlen < 9)
+ return GNUNET_SYSERR;
+ cnt = SSCANF (zt_addr, "%u.%u.%u.%u:%u", &temps[0], &temps[1], &temps[2], &temps[3], &port);
+ if (5 != cnt)
+ return GNUNET_SYSERR;
+ for (cnt = 0; cnt < 4; cnt++)
+ if (temps[cnt] > 0xFF)
+ return GNUNET_SYSERR;
+ if (port > 65535)
+ return GNUNET_SYSERR;
+ r_buf->sin_family = AF_INET;
+ r_buf->sin_port = htons (port);
+ r_buf->sin_addr.s_addr = htonl ((temps[0] << 24) + (temps[1] << 16) +
+ (temps[2] << 8) + temps[3]);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ r_buf->sin_len = (u_char) sizeof (struct sockaddr_in);
+#endif
+ return GNUNET_OK;
+}
+
+
+/**
+ * Tries to convert '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,
+ * 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.
+ */
+int
+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);
}
+/**
+ * Makes a copy of argv that consists of a single memory chunk that can be
+ * freed with a single call to GNUNET_free ();
+ */
+static char *const *
+_make_continuous_arg_copy (int argc, char *const *argv)
+{
+ size_t argvsize = 0;
+ int i;
+ char **new_argv;
+ char *p;
+ for (i = 0; i < argc; i++)
+ argvsize += strlen (argv[i]) + 1 + sizeof (char *);
+ new_argv = GNUNET_malloc (argvsize + sizeof (char *));
+ p = (char *) &new_argv[argc + 1];
+ for (i = 0; i < argc; i++)
+ {
+ new_argv[i] = p;
+ strcpy (p, argv[i]);
+ p += strlen (argv[i]) + 1;
+ }
+ new_argv[argc] = NULL;
+ return (char *const *) new_argv;
+}
+
+
+/**
+ * Returns utf-8 encoded arguments.
+ * Does nothing (returns a copy of argc and argv) on any platform
+ * 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.
+ *
+ * @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
+ */
+int
+GNUNET_STRINGS_get_utf8_args (int argc, char *const *argv, int *u8argc, char *const **u8argv)
+{
+#if WINDOWS
+ wchar_t *wcmd;
+ wchar_t **wargv;
+ int wargc;
+ int i;
+ char **split_u8argv;
+
+ wcmd = GetCommandLineW ();
+ if (NULL == wcmd)
+ return GNUNET_SYSERR;
+ wargv = CommandLineToArgvW (wcmd, &wargc);
+ if (NULL == wargv)
+ return GNUNET_SYSERR;
+
+ split_u8argv = GNUNET_malloc (argc * sizeof (char *));
+
+ for (i = 0; i < wargc; i++)
+ {
+ 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)
+ {
+ int j;
+ for (j = 0; j < i; j++)
+ free (split_u8argv[j]);
+ GNUNET_free (split_u8argv);
+ LocalFree (wargv);
+ return GNUNET_SYSERR;
+ }
+ }
+
+ *u8argv = _make_continuous_arg_copy (wargc, split_u8argv);
+ *u8argc = wargc;
+
+ for (i = 0; i < wargc; i++)
+ free (split_u8argv[i]);
+ free (split_u8argv);
+ return GNUNET_OK;
+#else
+ char *const *new_argv = (char *const *) _make_continuous_arg_copy (argc, argv);
+ *u8argv = new_argv;
+ *u8argc = argc;
+ return GNUNET_OK;
+#endif
+}
/* end of strings.c */
projects / oweals / gnunet.git / blobdiff