2 This file is part of GNUnet.
3 (C) 2005-2013 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file util/strings.c
23 * @brief string functions
25 * @author Christian Grothoff
32 #include "gnunet_util_lib.h"
37 #define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
39 #define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", syscall)
43 * Fill a buffer of the given size with
44 * count 0-terminated strings (given as varargs).
45 * If "buffer" is NULL, only compute the amount of
46 * space required (sum of "strlen(arg)+1").
48 * Unlike using "snprintf" with "%s", this function
49 * will add 0-terminators after each string. The
50 * "GNUNET_string_buffer_tokenize" function can be
51 * used to parse the buffer back into individual
54 * @param buffer the buffer to fill with strings, can
55 * be NULL in which case only the necessary
56 * amount of space will be calculated
57 * @param size number of bytes available in buffer
58 * @param count number of strings that follow
59 * @param ... count 0-terminated strings to copy to buffer
60 * @return number of bytes written to the buffer
61 * (or number of bytes that would have been written)
64 GNUNET_STRINGS_buffer_fill (char *buffer, size_t size, unsigned int count, ...)
75 s = va_arg (ap, const char *);
77 slen = strlen (s) + 1;
80 GNUNET_assert (needed + slen <= size);
81 memcpy (&buffer[needed], s, slen);
92 * Given a buffer of a given size, find "count"
93 * 0-terminated strings in the buffer and assign
94 * the count (varargs) of type "const char**" to the
95 * locations of the respective strings in the
98 * @param buffer the buffer to parse
99 * @param size size of the buffer
100 * @param count number of strings to locate
101 * @return offset of the character after the last 0-termination
102 * in the buffer, or 0 on error.
105 GNUNET_STRINGS_buffer_tokenize (const char *buffer, size_t size,
106 unsigned int count, ...)
114 va_start (ap, count);
117 r = va_arg (ap, const char **);
120 while ((needed < size) && (buffer[needed] != '\0'))
125 return 0; /* error */
128 needed++; /* skip 0-termination */
137 * Convert a given filesize into a fancy human-readable format.
139 * @param size number of bytes
140 * @return fancy representation of the size (possibly rounded) for humans
143 GNUNET_STRINGS_byte_size_fancy (unsigned long long size)
145 const char *unit = _( /* size unit */ "b");
168 ret = GNUNET_malloc (32);
169 GNUNET_snprintf (ret, 32, "%llu %s", size, unit);
175 * Unit conversion table entry for 'convert_with_table'.
177 struct ConversionTable
180 * Name of the unit (or NULL for end of table).
185 * Factor to apply for this unit.
187 unsigned long long value;
192 * Convert a string of the form "4 X 5 Y" into a numeric value
193 * by interpreting "X" and "Y" as units and then multiplying
194 * the numbers with the values associated with the respective
195 * unit from the conversion table.
197 * @param input input string to parse
198 * @param table table with the conversion of unit names to numbers
199 * @param output where to store the result
200 * @return GNUNET_OK on success, GNUNET_SYSERR on error
203 convert_with_table (const char *input,
204 const struct ConversionTable *table,
205 unsigned long long *output)
207 unsigned long long ret;
210 unsigned long long last;
215 in = GNUNET_strdup (input);
216 for (tok = strtok (in, " "); tok != NULL; tok = strtok (NULL, " "))
221 while ((table[i].name != NULL) && (0 != strcasecmp (table[i].name, tok)))
223 if (table[i].name != NULL)
225 last *= table[i].value;
226 break; /* next tok */
233 last = strtoull (tok, &endptr, 10);
234 if ((0 != errno) || (endptr == tok))
237 return GNUNET_SYSERR; /* expected number */
239 if ('\0' == endptr[0])
240 break; /* next tok */
242 tok = endptr; /* and re-check (handles times like "10s") */
244 } while (GNUNET_YES);
254 * Convert a given fancy human-readable size to bytes.
256 * @param fancy_size human readable string (i.e. 1 MB)
257 * @param size set to the size in bytes
258 * @return GNUNET_OK on success, GNUNET_SYSERR on error
261 GNUNET_STRINGS_fancy_size_to_bytes (const char *fancy_size,
262 unsigned long long *size)
264 static const struct ConversionTable table[] =
269 { "MiB", 1024 * 1024},
270 { "MB", 1000 * 1000},
271 { "GiB", 1024 * 1024 * 1024},
272 { "GB", 1000 * 1000 * 1000},
273 { "TiB", 1024LL * 1024LL * 1024LL * 1024LL},
274 { "TB", 1000LL * 1000LL * 1000LL * 1024LL},
275 { "PiB", 1024LL * 1024LL * 1024LL * 1024LL * 1024LL},
276 { "PB", 1000LL * 1000LL * 1000LL * 1024LL * 1000LL},
277 { "EiB", 1024LL * 1024LL * 1024LL * 1024LL * 1024LL * 1024LL},
278 { "EB", 1000LL * 1000LL * 1000LL * 1024LL * 1000LL * 1000LL},
282 return convert_with_table (fancy_size,
289 * Convert a given fancy human-readable time to our internal
292 * @param fancy_time human readable string (i.e. 1 minute)
293 * @param rtime set to the relative time
294 * @return GNUNET_OK on success, GNUNET_SYSERR on error
297 GNUNET_STRINGS_fancy_time_to_relative (const char *fancy_time,
298 struct GNUNET_TIME_Relative *rtime)
300 static const struct ConversionTable table[] =
304 { "s", 1000 * 1000LL },
305 { "\"", 1000 * 1000LL },
306 { "m", 60 * 1000 * 1000LL},
307 { "min", 60 * 1000 * 1000LL},
308 { "minutes", 60 * 1000 * 1000LL},
309 { "'", 60 * 1000 * 1000LL},
310 { "h", 60 * 60 * 1000 * 1000LL},
311 { "d", 24 * 60 * 60 * 1000LL * 1000LL},
312 { "day", 24 * 60 * 60 * 1000LL * 1000LL},
313 { "days", 24 * 60 * 60 * 1000LL * 1000LL},
314 { "a", 31536000000000LL /* year */ },
318 unsigned long long val;
320 if (0 == strcasecmp ("forever", fancy_time))
322 *rtime = GNUNET_TIME_UNIT_FOREVER_REL;
325 ret = convert_with_table (fancy_time,
328 rtime->rel_value_us = (uint64_t) val;
334 * Convert a given fancy human-readable time to our internal
337 * @param fancy_time human readable string (i.e. %Y-%m-%d %H:%M:%S)
338 * @param atime set to the absolute time
339 * @return GNUNET_OK on success, GNUNET_SYSERR on error
342 GNUNET_STRINGS_fancy_time_to_absolute (const char *fancy_time,
343 struct GNUNET_TIME_Absolute *atime)
348 if (0 == strcasecmp ("end of time", fancy_time))
350 *atime = GNUNET_TIME_UNIT_FOREVER_ABS;
353 memset (&tv, 0, sizeof (tv));
354 if ( (NULL == strptime (fancy_time, "%a %b %d %H:%M:%S %Y", &tv)) &&
355 (NULL == strptime (fancy_time, "%c", &tv)) &&
356 (NULL == strptime (fancy_time, "%Ec", &tv)) &&
357 (NULL == strptime (fancy_time, "%Y-%m-%d %H:%M:%S", &tv)) &&
358 (NULL == strptime (fancy_time, "%Y-%m-%d %H:%M", &tv)) &&
359 (NULL == strptime (fancy_time, "%x", &tv)) &&
360 (NULL == strptime (fancy_time, "%Ex", &tv)) &&
361 (NULL == strptime (fancy_time, "%Y-%m-%d", &tv)) &&
362 (NULL == strptime (fancy_time, "%Y-%m", &tv)) &&
363 (NULL == strptime (fancy_time, "%Y", &tv)) )
364 return GNUNET_SYSERR;
366 atime->abs_value_us = (uint64_t) ((uint64_t) t * 1000LL * 1000LL);
368 atime->abs_value_us -= 1000LL * 1000LL * timezone;
375 * Convert the len characters long character sequence
376 * given in input that is in the given input charset
377 * to a string in given output charset.
378 * @return the converted string (0-terminated),
379 * if conversion fails, a copy of the orignal
380 * string is returned.
383 GNUNET_STRINGS_conv (const char *input,
385 const char *input_charset,
386 const char *output_charset)
390 char *encoded_string;
391 size_t u8_string_length;
392 size_t encoded_string_length;
394 u8_string = u8_conv_from_encoding (input_charset,
399 if (NULL == u8_string)
401 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "u8_conv_from_encoding");
404 if (0 == strcmp (output_charset, "UTF-8"))
406 ret = GNUNET_malloc (u8_string_length + 1);
407 memcpy (ret, u8_string, u8_string_length);
408 ret[u8_string_length] = '\0';
412 encoded_string = u8_conv_to_encoding (output_charset, iconveh_error,
413 u8_string, u8_string_length,
415 &encoded_string_length);
417 if (NULL == encoded_string)
419 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "u8_conv_to_encoding");
422 ret = GNUNET_malloc (encoded_string_length + 1);
423 memcpy (ret, encoded_string, encoded_string_length);
424 ret[encoded_string_length] = '\0';
425 free (encoded_string);
428 LOG (GNUNET_ERROR_TYPE_WARNING, _("Character sets requested were `%s'->`%s'\n"),
429 "UTF-8", output_charset);
430 ret = GNUNET_malloc (len + 1);
431 memcpy (ret, input, len);
438 * Convert the len characters long character sequence
439 * given in input that is in the given charset
441 * @return the converted string (0-terminated),
442 * if conversion fails, a copy of the orignal
443 * string is returned.
446 GNUNET_STRINGS_to_utf8 (const char *input, size_t len, const char *charset)
448 return GNUNET_STRINGS_conv (input, len, charset, "UTF-8");
453 * Convert the len bytes-long UTF-8 string
454 * given in input to the given charset.
456 * @return the converted string (0-terminated),
457 * if conversion fails, a copy of the orignal
458 * string is returned.
461 GNUNET_STRINGS_from_utf8 (const char *input, size_t len, const char *charset)
463 return GNUNET_STRINGS_conv (input, len, "UTF-8", charset);
468 * Convert the utf-8 input string to lowercase
469 * Output needs to be allocated appropriately
471 * @param input input string
472 * @param output output buffer
475 GNUNET_STRINGS_utf8_tolower(const char* input, char** output)
480 tmp_in = u8_tolower ((uint8_t*)input, strlen ((char *) input),
481 NULL, UNINORM_NFD, NULL, &len);
482 memcpy(*output, tmp_in, len);
483 (*output)[len] = '\0';
489 * Convert the utf-8 input string to uppercase
490 * Output needs to be allocated appropriately
492 * @param input input string
493 * @param output output buffer
496 GNUNET_STRINGS_utf8_toupper(const char* input, char** output)
501 tmp_in = u8_toupper ((uint8_t*)input, strlen ((char *) input),
502 NULL, UNINORM_NFD, NULL, &len);
503 memcpy(*output, tmp_in, len);
504 (*output)[len] = '\0';
510 * Complete filename (a la shell) from abbrevition.
511 * @param fil the name of the file, may contain ~/ or
512 * be relative to the current directory
513 * @returns the full file name,
514 * NULL is returned on error
517 GNUNET_STRINGS_filename_expand (const char *fil)
534 if (fil[0] == DIR_SEPARATOR)
535 /* absolute path, just copy */
536 return GNUNET_strdup (fil);
539 fm = getenv ("HOME");
542 LOG (GNUNET_ERROR_TYPE_WARNING,
543 _("Failed to expand `$HOME': environment variable `HOME' not set"));
546 fm = GNUNET_strdup (fm);
547 /* do not copy '~' */
550 /* skip over dir seperator to be consistent */
551 if (fil_ptr[0] == DIR_SEPARATOR)
562 buffer = GNUNET_malloc (len);
563 if (getcwd (buffer, len) != NULL)
568 if ((errno == ERANGE) && (len < 1024 * 1024 * 4))
571 GNUNET_free (buffer);
574 GNUNET_free (buffer);
579 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "getcwd");
580 buffer = getenv ("PWD"); /* alternative */
582 fm = GNUNET_strdup (buffer);
585 fm = GNUNET_strdup ("./"); /* give up */
587 n = strlen (fm) + 1 + strlen (fil_ptr) + 1;
588 buffer = GNUNET_malloc (n);
589 GNUNET_snprintf (buffer, n, "%s%s%s", fm,
590 (fm[strlen (fm) - 1] ==
591 DIR_SEPARATOR) ? "" : DIR_SEPARATOR_STR, fil_ptr);
595 fn = GNUNET_malloc (MAX_PATH + 1);
597 if ((lRet = plibc_conv_to_win_path (fil, fn)) != ERROR_SUCCESS)
599 SetErrnoFromWinError (lRet);
600 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "plibc_conv_to_win_path");
603 /* is the path relative? */
604 if ((strncmp (fn + 1, ":\\", 2) != 0) && (strncmp (fn, "\\\\", 2) != 0))
606 char szCurDir[MAX_PATH + 1];
608 lRet = GetCurrentDirectory (MAX_PATH + 1, szCurDir);
609 if (lRet + strlen (fn) + 1 > (MAX_PATH + 1))
611 SetErrnoFromWinError (ERROR_BUFFER_OVERFLOW);
612 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "GetCurrentDirectory");
615 buffer = GNUNET_malloc (MAX_PATH + 1);
616 GNUNET_snprintf (buffer, MAX_PATH + 1, "%s\\%s", szCurDir, fn);
627 * Give relative time in human-readable fancy format.
628 * This is one of the very few calls in the entire API that is
631 * @param delta time in milli seconds
632 * @param do_round are we allowed to round a bit?
633 * @return time as human-readable string
636 GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta,
639 static char buf[128];
640 const char *unit = _( /* time unit */ "µs");
641 uint64_t dval = delta.rel_value_us;
643 if (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == delta.rel_value_us)
645 if (0 == delta.rel_value_us)
647 if ( ( (GNUNET_YES == do_round) &&
648 (dval > 5 * 1000) ) ||
649 (0 == (dval % 1000) ))
652 unit = _( /* time unit */ "ms");
653 if ( ( (GNUNET_YES == do_round) &&
654 (dval > 5 * 1000) ) ||
655 (0 == (dval % 1000) ))
658 unit = _( /* time unit */ "s");
659 if ( ( (GNUNET_YES == do_round) &&
661 (0 == (dval % 60) ) )
664 unit = _( /* time unit */ "m");
665 if ( ( (GNUNET_YES == do_round) &&
670 unit = _( /* time unit */ "h");
671 if ( ( (GNUNET_YES == do_round) &&
677 unit = _( /* time unit */ "day");
679 unit = _( /* time unit */ "days");
685 GNUNET_snprintf (buf, sizeof (buf),
686 "%llu %s", dval, unit);
692 * "asctime", except for GNUnet time.
693 * This is one of the very few calls in the entire API that is
696 * @param t time to convert
697 * @return absolute time in human-readable format
700 GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t)
702 static char buf[255];
706 if (t.abs_value_us == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
707 return _("end of time");
708 tt = t.abs_value_us / 1000LL / 1000LL;
710 strftime (buf, sizeof (buf), "%a %b %d %H:%M:%S %Y", tp);
717 * Returns a pointer to a part of filename (allocates nothing)!
719 * @param filename filename to extract basename from
720 * @return short (base) name of the file (that is, everything following the
721 * last directory separator in filename. If filename ends with a
722 * directory separator, the result will be a zero-length string.
723 * If filename has no directory separators, the result is filename
727 GNUNET_STRINGS_get_short_name (const char *filename)
729 const char *short_fn = filename;
731 while (NULL != (ss = strstr (short_fn, DIR_SEPARATOR_STR))
739 * Get the numeric value corresponding to a character.
741 * @param a a character
742 * @return corresponding numeric value
745 getValue__ (unsigned char a)
747 if ((a >= '0') && (a <= '9'))
749 if ((a >= 'A') && (a <= 'V'))
750 return (a - 'A' + 10);
756 * Convert binary data to ASCII encoding. The ASCII encoding is rather
757 * GNUnet specific. It was chosen such that it only uses characters
758 * in [0-9A-V], can be produced without complex arithmetics and uses a
759 * small number of characters.
760 * Does not append 0-terminator, but returns a pointer to the place where
761 * it should be placed, if needed.
763 * @param data data to encode
764 * @param size size of data (in bytes)
765 * @param out buffer to fill
766 * @param out_size size of the buffer. Must be large enough to hold
767 * ((size*8) + (((size*8) % 5) > 0 ? 5 - ((size*8) % 5) : 0)) / 5 bytes
768 * @return pointer to the next byte in 'out' or NULL on error.
771 GNUNET_STRINGS_data_to_string (const void *data, size_t size, char *out, size_t out_size)
774 * 32 characters for encoding
776 static char *encTable__ = "0123456789ABCDEFGHIJKLMNOPQRSTUV";
781 const unsigned char *udata;
783 GNUNET_assert (data != NULL);
784 GNUNET_assert (out != NULL);
786 if (out_size < (((size*8) + ((size*8) % 5)) % 5))
795 while ((rpos < size) || (vbit > 0))
797 if ((rpos < size) && (vbit < 5))
799 bits = (bits << 8) | udata[rpos++]; /* eat 8 more bits */
804 bits <<= (5 - vbit); /* zero-padding */
805 GNUNET_assert (vbit == ((size * 8) % 5));
808 if (wpos >= out_size)
813 out[wpos++] = encTable__[(bits >> (vbit - 5)) & 31];
816 GNUNET_assert (vbit == 0);
824 * Convert ASCII encoding back to data
825 * out_size must match exactly the size of the data before it was encoded.
827 * @param enc the encoding
828 * @param enclen number of characters in 'enc' (without 0-terminator, which can be missing)
829 * @param out location where to store the decoded data
830 * @param out_size size of the output buffer
831 * @return GNUNET_OK on success, GNUNET_SYSERR if result has the wrong encoding
834 GNUNET_STRINGS_string_to_data (const char *enc, size_t enclen,
835 void *out, size_t out_size)
844 unsigned int encoded_len = out_size * 8;
850 return GNUNET_SYSERR;
855 if ((encoded_len % 5) > 0)
857 vbit = encoded_len % 5; /* padding! */
859 bits = (ret = getValue__ (enc[--rpos])) >> (5 - (encoded_len % 5));
865 bits = (ret = getValue__ (enc[--rpos]));
867 if ((encoded_len + shift) / 5 != enclen)
868 return GNUNET_SYSERR;
870 return GNUNET_SYSERR;
876 return GNUNET_SYSERR;
878 bits = ((ret = getValue__ (enc[--rpos])) << vbit) | bits;
880 return GNUNET_SYSERR;
884 uout[--wpos] = (unsigned char) bits;
891 return GNUNET_SYSERR;
897 * Parse a path that might be an URI.
899 * @param path path to parse. Must be NULL-terminated.
900 * @param scheme_part a pointer to 'char *' where a pointer to a string that
901 * represents the URI scheme will be stored. Can be NULL. The string is
902 * allocated by the function, and should be freed by GNUNET_free() when
903 * it is no longer needed.
904 * @param path_part a pointer to 'const char *' where a pointer to the path
905 * part of the URI will be stored. Can be NULL. Points to the same block
906 * of memory as 'path', and thus must not be freed. Might point to '\0',
907 * if path part is zero-length.
908 * @return GNUNET_YES if it's an URI, GNUNET_NO otherwise. If 'path' is not
909 * an URI, '* scheme_part' and '*path_part' will remain unchanged
910 * (if they weren't NULL).
913 GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part,
914 const char **path_part)
919 const char *post_scheme_part = NULL;
921 for (end = 0, i = 0; !end && i < len; i++)
926 if (path[i] == ':' && i > 0)
931 if (!((path[i] >= 'A' && path[i] <= 'Z') || (path[i] >= 'a' && path[i] <= 'z')
932 || (path[i] >= '0' && path[i] <= '9') || path[i] == '+' || path[i] == '-'
933 || (path[i] == '.')))
946 post_scheme_part = &path[i];
953 if (post_scheme_part == NULL)
957 *scheme_part = GNUNET_malloc (post_scheme_part - path + 1);
958 memcpy (*scheme_part, path, post_scheme_part - path);
959 (*scheme_part)[post_scheme_part - path] = '\0';
962 *path_part = post_scheme_part;
968 * Check whether 'filename' is absolute or not, and if it's an URI
970 * @param filename filename to check
971 * @param can_be_uri GNUNET_YES to check for being URI, GNUNET_NO - to
972 * assume it's not URI
973 * @param r_is_uri a pointer to an int that is set to GNUNET_YES if 'filename'
974 * is URI and to GNUNET_NO otherwise. Can be NULL. If 'can_be_uri' is
975 * not GNUNET_YES, *r_is_uri is set to GNUNET_NO.
976 * @param r_uri_scheme a pointer to a char * that is set to a pointer to URI scheme.
977 * The string is allocated by the function, and should be freed with
978 * GNUNET_free (). Can be NULL.
979 * @return GNUNET_YES if 'filename' is absolute, GNUNET_NO otherwise.
982 GNUNET_STRINGS_path_is_absolute (const char *filename, int can_be_uri,
983 int *r_is_uri, char **r_uri_scheme)
988 const char *post_scheme_path;
991 /* consider POSIX paths to be absolute too, even on W32,
992 * as plibc expansion will fix them for us.
994 if (filename[0] == '/')
998 is_uri = GNUNET_STRINGS_parse_uri (filename, &uri, &post_scheme_path);
1004 *r_uri_scheme = uri;
1006 GNUNET_free_non_null (uri);
1008 len = strlen(post_scheme_path);
1009 /* Special check for file:///c:/blah
1010 * We want to parse 'c:/', not '/c:/'
1012 if (post_scheme_path[0] == '/' && len >= 3 && post_scheme_path[2] == ':')
1013 post_scheme_path = &post_scheme_path[1];
1015 return GNUNET_STRINGS_path_is_absolute (post_scheme_path, GNUNET_NO, NULL, NULL);
1021 *r_is_uri = GNUNET_NO;
1024 len = strlen (filename);
1026 ((filename[0] >= 'A' && filename[0] <= 'Z')
1027 || (filename[0] >= 'a' && filename[0] <= 'z'))
1028 && filename[1] == ':' && (filename[2] == '/' || filename[2] == '\\'))
1035 #define _IFMT 0170000 /* type of file */
1036 #define _IFLNK 0120000 /* symbolic link */
1037 #define S_ISLNK(m) (((m)&_IFMT) == _IFLNK)
1042 * Perform 'checks' on 'filename'
1044 * @param filename file to check
1045 * @param checks checks to perform
1046 * @return GNUNET_YES if all checks pass, GNUNET_NO if at least one of them
1047 * fails, GNUNET_SYSERR when a check can't be performed
1050 GNUNET_STRINGS_check_filename (const char *filename,
1051 enum GNUNET_STRINGS_FilenameCheck checks)
1054 if ( (NULL == filename) || (filename[0] == '\0') )
1055 return GNUNET_SYSERR;
1056 if (0 != (checks & GNUNET_STRINGS_CHECK_IS_ABSOLUTE))
1057 if (!GNUNET_STRINGS_path_is_absolute (filename, GNUNET_NO, NULL, NULL))
1059 if (0 != (checks & (GNUNET_STRINGS_CHECK_EXISTS
1060 | GNUNET_STRINGS_CHECK_IS_DIRECTORY
1061 | GNUNET_STRINGS_CHECK_IS_LINK)))
1063 if (0 != STAT (filename, &st))
1065 if (0 != (checks & GNUNET_STRINGS_CHECK_EXISTS))
1068 return GNUNET_SYSERR;
1071 if (0 != (checks & GNUNET_STRINGS_CHECK_IS_DIRECTORY))
1072 if (!S_ISDIR (st.st_mode))
1074 if (0 != (checks & GNUNET_STRINGS_CHECK_IS_LINK))
1075 if (!S_ISLNK (st.st_mode))
1082 * Tries to convert 'zt_addr' string to an IPv6 address.
1083 * The string is expected to have the format "[ABCD::01]:80".
1085 * @param zt_addr 0-terminated string. May be mangled by the function.
1086 * @param addrlen length of zt_addr (not counting 0-terminator).
1087 * @param r_buf a buffer to fill. Initially gets filled with zeroes,
1088 * then its sin6_port, sin6_family and sin6_addr are set appropriately.
1089 * @return GNUNET_OK if conversion succeded. GNUNET_SYSERR otherwise, in which
1090 * case the contents of r_buf are undefined.
1093 GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr,
1095 struct sockaddr_in6 *r_buf)
1097 char zbuf[addrlen + 1];
1103 return GNUNET_SYSERR;
1104 memcpy (zbuf, zt_addr, addrlen);
1107 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1108 _("IPv6 address did not start with `['\n"));
1109 return GNUNET_SYSERR;
1111 zbuf[addrlen] = '\0';
1112 port_colon = strrchr (zbuf, ':');
1113 if (NULL == port_colon)
1115 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1116 _("IPv6 address did contain ':' to separate port number\n"));
1117 return GNUNET_SYSERR;
1119 if (']' != *(port_colon - 1))
1121 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1122 _("IPv6 address did contain ']' before ':' to separate port number\n"));
1123 return GNUNET_SYSERR;
1125 ret = SSCANF (port_colon, ":%u", &port);
1126 if ( (1 != ret) || (port > 65535) )
1128 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1129 _("IPv6 address did contain a valid port number after the last ':'\n"));
1130 return GNUNET_SYSERR;
1132 *(port_colon-1) = '\0';
1133 memset (r_buf, 0, sizeof (struct sockaddr_in6));
1134 ret = inet_pton (AF_INET6, &zbuf[1], &r_buf->sin6_addr);
1137 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1138 _("Invalid IPv6 address `%s': %s\n"),
1141 return GNUNET_SYSERR;
1143 r_buf->sin6_port = htons (port);
1144 r_buf->sin6_family = AF_INET6;
1145 #if HAVE_SOCKADDR_IN_SIN_LEN
1146 r_buf->sin6_len = (u_char) sizeof (struct sockaddr_in6);
1153 * Tries to convert 'zt_addr' string to an IPv4 address.
1154 * The string is expected to have the format "1.2.3.4:80".
1156 * @param zt_addr 0-terminated string. May be mangled by the function.
1157 * @param addrlen length of zt_addr (not counting 0-terminator).
1158 * @param r_buf a buffer to fill.
1159 * @return GNUNET_OK if conversion succeded. GNUNET_SYSERR otherwise, in which case
1160 * the contents of r_buf are undefined.
1163 GNUNET_STRINGS_to_address_ipv4 (const char *zt_addr, uint16_t addrlen,
1164 struct sockaddr_in *r_buf)
1166 unsigned int temps[4];
1171 return GNUNET_SYSERR;
1172 cnt = SSCANF (zt_addr, "%u.%u.%u.%u:%u", &temps[0], &temps[1], &temps[2], &temps[3], &port);
1174 return GNUNET_SYSERR;
1175 for (cnt = 0; cnt < 4; cnt++)
1176 if (temps[cnt] > 0xFF)
1177 return GNUNET_SYSERR;
1179 return GNUNET_SYSERR;
1180 r_buf->sin_family = AF_INET;
1181 r_buf->sin_port = htons (port);
1182 r_buf->sin_addr.s_addr = htonl ((temps[0] << 24) + (temps[1] << 16) +
1183 (temps[2] << 8) + temps[3]);
1184 #if HAVE_SOCKADDR_IN_SIN_LEN
1185 r_buf->sin_len = (u_char) sizeof (struct sockaddr_in);
1192 * Tries to convert 'addr' string to an IP (v4 or v6) address.
1193 * Will automatically decide whether to treat 'addr' as v4 or v6 address.
1195 * @param addr a string, may not be 0-terminated.
1196 * @param addrlen number of bytes in addr (if addr is 0-terminated,
1197 * 0-terminator should not be counted towards addrlen).
1198 * @param r_buf a buffer to fill.
1199 * @return GNUNET_OK if conversion succeded. GNUNET_SYSERR otherwise, in which
1200 * case the contents of r_buf are undefined.
1203 GNUNET_STRINGS_to_address_ip (const char *addr,
1205 struct sockaddr_storage *r_buf)
1208 return GNUNET_STRINGS_to_address_ipv6 (addr, addrlen, (struct sockaddr_in6 *) r_buf);
1209 return GNUNET_STRINGS_to_address_ipv4 (addr, addrlen, (struct sockaddr_in *) r_buf);
1214 * Makes a copy of argv that consists of a single memory chunk that can be
1215 * freed with a single call to GNUNET_free ();
1217 static char *const *
1218 _make_continuous_arg_copy (int argc, char *const *argv)
1220 size_t argvsize = 0;
1224 for (i = 0; i < argc; i++)
1225 argvsize += strlen (argv[i]) + 1 + sizeof (char *);
1226 new_argv = GNUNET_malloc (argvsize + sizeof (char *));
1227 p = (char *) &new_argv[argc + 1];
1228 for (i = 0; i < argc; i++)
1231 strcpy (p, argv[i]);
1232 p += strlen (argv[i]) + 1;
1234 new_argv[argc] = NULL;
1235 return (char *const *) new_argv;
1240 * Returns utf-8 encoded arguments.
1241 * Does nothing (returns a copy of argc and argv) on any platform
1243 * Returned argv has u8argv[u8argc] == NULL.
1244 * Returned argv is a single memory block, and can be freed with a single
1245 * GNUNET_free () call.
1247 * @param argc argc (as given by main())
1248 * @param argv argv (as given by main())
1249 * @param u8argc a location to store new argc in (though it's th same as argc)
1250 * @param u8argv a location to store new argv in
1251 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
1254 GNUNET_STRINGS_get_utf8_args (int argc, char *const *argv, int *u8argc, char *const **u8argv)
1261 char **split_u8argv;
1263 wcmd = GetCommandLineW ();
1265 return GNUNET_SYSERR;
1266 wargv = CommandLineToArgvW (wcmd, &wargc);
1268 return GNUNET_SYSERR;
1270 split_u8argv = GNUNET_malloc (argc * sizeof (char *));
1272 for (i = 0; i < wargc; i++)
1275 /* Hopefully it will allocate us NUL-terminated strings... */
1276 split_u8argv[i] = (char *) u16_to_u8 (wargv[i], wcslen (wargv[i]) + 1, NULL, &strl);
1277 if (NULL == split_u8argv[i])
1280 for (j = 0; j < i; j++)
1281 free (split_u8argv[j]);
1282 GNUNET_free (split_u8argv);
1284 return GNUNET_SYSERR;
1288 *u8argv = _make_continuous_arg_copy (wargc, split_u8argv);
1291 for (i = 0; i < wargc; i++)
1292 free (split_u8argv[i]);
1293 free (split_u8argv);
1296 char *const *new_argv = (char *const *) _make_continuous_arg_copy (argc, argv);
1303 /* end of strings.c */