This file is indexed.

/usr/include/wvstreams/wvstrutils.h is in libwvstreams-dev 4.6.1-7.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
/* -*- Mode: C++ -*-
 * Worldvisions Weaver Software:
 *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
 *
 * Various little string functions...
 * 
 * FIXME: and some other assorted crap that belongs anywhere but here.
 */
#ifndef __WVSTRUTILS_H
#define __WVSTRUTILS_H

#include <sys/types.h> // for off_t
#include <time.h>
#include <ctype.h>
#include "wvstring.h"
#include "wvstringlist.h"
#include "wvhex.h"
#ifndef _WIN32
#include "wvregex.h"
#endif

/** \file
 * Various little string functions
 */


/**
 * Add character c to the end of a string after removing 
 * terminating carriage returns/linefeeds if any.
 * 
 * You need a buffer that's at least one character bigger than the 
 * current length of the string, including the terminating NULL. 
 */
char *terminate_string(char *string, char c);

/**
 * Trims whitespace from the beginning and end of the character string, 
 * including carriage return / linefeed characters. Modifies the string 
 * in place. Returns the new first character of the string, which points 
 * either at 'string' itself or some character contained therein.
 *
 * string is allowed to be NULL; returns NULL in that case.
 */
char *trim_string(char *string);

/**
 * Similar to above, but trims the string starting at the first occurrence of
 * c.
 */
char *trim_string(char *string, char c);

/**
 * return the string formed by concatenating string 'a' and string 'b' with
 * the 'sep' character between them.  For example,
 *     spacecat("xx", "yy", ";");
 * returns "xx;yy", and
 *    spacecat("xx;;", "yy", ";")
 * returns "xx;;;yy", and
 *    spacecat("xx;;", "yy", ";", true)
 * returns "xx;yy".
 *
 * This function is much faster than the more obvious WvString("%s;%s", a, b),
 * so it's useful when you're producing a *lot* of string data.
 */
WvString spacecat(WvStringParm a, WvStringParm b, char sep = ' ',
		  bool onesep = false);

    
/**
 * Replaces all whitespace characters in the string with non-breaking spaces
 * (&nbsp;) for use with web stuff.
 */
char *non_breaking(const char *string);

/**
 * Replace all instances of c1 with c2 for the first 'length' characters in 
 * 'string'. Ignores terminating NULL, so make sure you set 'length' correctly.
 */
void replace_char(void *string, char c1, char c2, int length);

/**
 * Snip off the first part of 'haystack' if it consists of 'needle'.
 */
char *snip_string(char *haystack, char *needle);

#ifndef _WIN32
/**
 * In-place modify a character string so that all contained letters are 
 * in lower case. Returns 'string'.
 */
char *strlwr(char *string);

/**
 * In-place modify a character string so that all contained letters are 
 * in upper case. Returns 'string'.
 */
char *strupr(char *string);

#endif

/** Returns true if all characters in 'string' are isalnum() (alphanumeric). */
bool is_word(const char *string);

/**
 * Produce a hexadecimal dump of the data buffer in 'buf' of length 'len'. 
 * It is formatted with 16 bytes per line; each line has an address offset, 
 * hex representation, and printable representation.
 *
 * This is used mostly for debugging purposes. You can send the returned 
 * WvString object directly to a WvLog or any other WvStream for output.
 */
WvString hexdump_buffer(const void *buf, size_t len, bool charRep = true);

/**
 * Returns true if 'c' is a newline or carriage return character. 
 * Increases code readability a bit.
 */
bool isnewline(char c);

/**
 * Converts escaped characters (things like %20 etc.) from web URLS
 * into their normal ASCII representations. If you happen to be
 * decoding PEM encoded stuff, or anything that has + signs in it that
 * you don't want encoded as spaces, then set no_space to true, and
 * it should "just work" for you.
 */
WvString url_decode(WvStringParm str, bool no_space = false);


/**
 * Converts all those pesky spaces, colons, and other nasties into nice 
 * unreadable Quasi-Unicode codes. The 'unsafe' parameter is a list of 
 * characters that are unsafe and should be escaped. If unspecified,
 * all characters which are not part of the uric character class defined
 * in RFC 2396 will be escaped. Note: The '%' character is always escaped, as 
 * otherwise the string would not be decodable.
 */
WvString url_encode(WvStringParm str, WvStringParm unsafe = "");
 

/**
 * Returns the difference between to dates in a human readable format
 */
WvString  diff_dates(time_t t1, time_t t2);


/**
 * Returns an RFC822-compatible date made out of _when, or, if _when < 0, out of
 * the current time.
 */
WvString rfc822_date(time_t _when = -1);

/** Returns an RFC1123-compatible date made out of _when */
WvString rfc1123_date(time_t _when);

/** Return the local date (TZ applied) out of _when */
WvString local_date(time_t _when = -1);

/** Return the local time (in format of ISO 8601) out of _when */
WvString intl_time(time_t _when = -1);

/** Return the local date (in format of ISO 8601) out of _when */
WvString intl_date(time_t _when = -1);

/** Return the local date and time (in format of ISO 8601) out of _when */
WvString intl_datetime(time_t _when = -1);

time_t intl_gmtoff(time_t t);

#ifndef _WIN32
/**
 * Similar to crypt(), but this randomly selects its own salt.
 * This function is defined in strcrypt.cc.  It chooses to use the DES
 * engine.
 */
WvString passwd_crypt(const char *str);

#endif
/**
 * Similar to crypt(), but this randomly selects its own salt.
 * This function is defined in strcrypt.cc.  It chooses to use the MD5
 * engine.
 */
WvString passwd_md5(const char *str);

/**
 * Returns a string with a backslash in front of every non alphanumeric
 * character in s1.
 */
WvString backslash_escape(WvStringParm s1);

/** How many times does 'c' occur in "s"? */
int strcount(WvStringParm s, const char c);

/**
 * Example: encode_hostname_as_DN("www.fizzle.com")
 * will result in dc=www,dc=fizzle,dc=com,cn=www.fizzle.com
 */
WvString encode_hostname_as_DN(WvStringParm hostname);

/**
 * Given a hostname, turn it into a "nice" one.  It has to start with a
 * letter/number, END with a letter/number, have underscores converted to
 * hyphens, and have no more than one hyphen in a row.  If we can't do this
 * and have any sort of answer, return "UNKNOWN".
 */
WvString nice_hostname(WvStringParm name);

/**
 * Take a full path/file name and splits it up into respective pathname and
 * filename. This can also be useful for splitting the toplevel directory off a
 * path.
 */
WvString getfilename(WvStringParm fullname);
WvString getdirname(WvStringParm fullname);

/*
 * Possible rounding methods for numbers -- remember from school?
 */
enum RoundingMethod
{
    ROUND_DOWN,
    ROUND_DOWN_AT_POINT_FIVE,
    ROUND_UP_AT_POINT_FIVE,
    ROUND_UP
};

/**
 * Given a number of blocks and a blocksize (default==1 byte), return a 
 * WvString containing a human-readable representation of blocks*blocksize.
 * This function uses SI prefixes.
 */
WvString sizetoa(unsigned long long blocks, unsigned long blocksize = 1,
		 RoundingMethod rounding_method = ROUND_UP_AT_POINT_FIVE);

/**
 * Given a size in kilobyes, return a human readable size.
 * This function uses SI prefixes (1 MB = 1 000 KB = 1 000 000 B).
 */
WvString sizektoa(unsigned long long kbytes,
		  RoundingMethod rounding_method = ROUND_UP_AT_POINT_FIVE);

/**
 * Given a number of blocks and a blocksize (default==1 byte), return a 
 * WvString containing a human-readable representation of blocks*blocksize.
 * This function uses IEC prefixes.
 */
WvString sizeitoa(unsigned long long blocks, unsigned long blocksize = 1,
		  RoundingMethod rounding_method = ROUND_UP_AT_POINT_FIVE);

/**
 * Given a size in kilobytes, return a human readable size.
 * This function uses IEC prefixes.
 */
WvString sizekitoa(unsigned long long kbytes,
		   RoundingMethod rounding_method = ROUND_UP_AT_POINT_FIVE);

/** Given a number of seconds, returns a formatted human-readable string
 * saying how long the period is.
 */
WvString secondstoa(unsigned int total_seconds);

/**
 * Finds a string in an array and returns its index.
 * Returns -1 if not found.
 */
int lookup(const char *str, const char * const *table,
    bool case_sensitive = false);

/**
 * Splits a string and adds each substring to a collection.
 *   coll       : the collection of strings to add to
 *   _s         : the string to split
 *   splitchars : the set of delimiter characters
 *   limit      : the maximum number of elements to split
 */
template<class StringCollection>
void strcoll_split(StringCollection &coll, WvStringParm _s,
    const char *splitchars = " \t", int limit = 0)
{
    WvString s(_s);
    char *sptr = s.edit(), *eptr, oldc;
    
    // Simple if statement to catch (and add) empty (but not NULL) strings.
    if (sptr && !*sptr )
    {	
	WvString *emptyString = new WvString("");
	coll.add(emptyString, true);
    }
    
    // Needed to catch delimeters at the beginning of the string.
    bool firstrun = true;

    while (sptr && *sptr)
    {
	--limit;

	if (firstrun)
	{   
	    firstrun = false;
	}
	else
	{
	    sptr += strspn(sptr, splitchars);
	}

	if (limit)
	{
	    eptr = sptr + strcspn(sptr, splitchars);
	}
	else
	{
	    eptr = sptr + strlen(sptr);
	}
	
	oldc = *eptr;
	*eptr = 0;
	
	WvString *newstr = new WvString(sptr);
        coll.add(newstr, true);
	
	*eptr = oldc;
	sptr = eptr;
    }
}


/**
 * Splits a string and adds each substring to a collection.
 *   this behaves differently in that it actually delimits the 
 *   pieces as fields and returns them, it doesn't treat multiple
 *   delimeters as one and skip them.
 *
 *   ie., parm1::parm2 -> 'parm1','','parm2' when delimited with ':'
 *
 *   coll       : the collection of strings to add to
 *   _s         : the string to split
 *   splitchars : the set of delimiter characters
 *   limit      : the maximum number of elements to split
 */
template<class StringCollection>
void strcoll_splitstrict(StringCollection &coll, WvStringParm _s,
    const char *splitchars = " \t", int limit = 0)
{
    WvString s(_s);
    char *cur = s.edit();

    if (!cur) return;

    for (;;)
    {
        --limit;
        if (!limit)
        {
            coll.add(new WvString(cur), true);
            break;
        }

        int len = strcspn(cur, splitchars);

        char tmp = cur[len];
        cur[len] = 0;
        coll.add(new WvString(cur), true);
        cur[len] = tmp;

        if (!cur[len]) break;
        cur += len + 1;
    }
}


#ifndef _WIN32 // don't have regex on win32
/**
 * Splits a string and adds each substring to a collection.
 *   coll       : the collection of strings to add to
 *   _s         : the string to split
 *   splitchars : the set of delimiter characters
 *   limit      : the maximum number of elements to split
 */
template<class StringCollection>
void strcoll_split(StringCollection &coll, WvStringParm s,
    const WvRegex &regex, int limit = 0)
{
    int start = 0;
    int match_start, match_end;
    int count = 0;
    
    while ((limit == 0 || count < limit)
    	    && regex.continuable_match(&s[start], match_start, match_end)
    	    && match_end > 0)
    {
    	WvString *substr = new WvString;
    	int len = match_start;
    	substr->setsize(len+1);
    	memcpy(substr->edit(), &s[start], len);
    	substr->edit()[len] = '\0';
    	coll.add(substr, true);
    	start += match_end;
    	++count;
    }
    
    if (limit == 0 || count < limit)
    {
    	WvString *last = new WvString(&s[start]);
    	last->unique();
    	coll.add(last, true);
    }
}
#endif


/**
 * Concatenates all strings in a collection and returns the result.
 *   coll      : the collection of strings to read from
 *   joinchars : the delimiter string to insert between strings
 */
template<class StringCollection>
WvString strcoll_join(const StringCollection &coll,
    const char *joinchars = " \t")
{
    size_t joinlen = strlen(joinchars);
    size_t totlen = 1;
    typename StringCollection::Iter s(
        const_cast<StringCollection&>(coll));
    for (s.rewind(); s.next(); )
    {
        if (s->cstr())
            totlen += strlen(s->cstr());
        totlen += joinlen;
    }
    totlen -= joinlen; // no join chars at tail
    
    WvString total;
    total.setsize(totlen);

    char *te = total.edit();
    te[0] = 0;
    bool first = true;
    for (s.rewind(); s.next(); )
    {
        if (first)
            first = false;
        else
            strcat(te, joinchars);
        if (s->cstr()) 
            strcat(te, s->cstr());
    }
    return total;
}

/**
 * Replace any instances of "a" with "b" in "s".  Kind of like sed, only
 * much dumber.
 */
WvString strreplace(WvStringParm s, WvStringParm a, WvStringParm b);

/** Replace any consecutive instances of character c with a single one */
WvString undupe(WvStringParm s, char c);

/** Do gethostname() without a fixed-length buffer */
WvString hostname();

/** Get the fqdn of the local host, using gethostbyname() and gethostname() */
WvString fqdomainname();

/** Get the current working directory without a fixed-length buffer */
WvString wvgetcwd();

/**
 * Inserts SI-style spacing into a number
 * (eg passing 9876543210 returns "9 876 543 210")
 */
WvString metriculate(const off_t i);

/**
 * Returns everything in line (exclusively) after a.
 * If a is not in line, "" is returned.
 */
WvString afterstr(WvStringParm line, WvStringParm a);

/**
 * Returns everything in line (exclusively) before 'a'.
 * If a is not in line, line is returned.
 */
WvString beforestr(WvStringParm line, WvStringParm a);

/**
 * Returns the string of length len starting at pos in line.
 * Error checking prevents seg fault.
 * If pos > line.len()-1 return ""
 * if pos+len > line.len() simply return from pos to end of line
 */
WvString substr(WvString line, unsigned int pos, unsigned int len);

/** 
 * Removes any trailing punctuation ('.', '?', or '!') from the line, and
 * returns it in a new string.  Does not modify line.
 */
WvString depunctuate(WvStringParm line);

// Converts a string in decimal to an arbitrary numeric type
template<class T>
bool wvstring_to_num(WvStringParm str, T &n)
{
    bool neg = false;
    n = 0;

    for (const char *p = str; *p; ++p)
    {
        if (isdigit(*p))
        {
            n = n * T(10) + T(*p - '0');
        }
        else if ((const char *)str == p
                && *p == '-')
        {
            neg = true;
        }
        else return false;
    }

    if (neg)
    	n = -n;

    return true;
}

/*
 * Before using the C-style string escaping functions below, please consider
 * using the functions in wvtclstring.h instead; they usualy lead to much more
 * human readable and manageable results, and allow representation of
 * lists of strings.
 */

struct CStrExtraEscape
{
    char ch;
    const char *esc;
};
extern const CStrExtraEscape CSTR_TCLSTR_ESCAPES[];

/// Converts data into a C-style string constant.
//
// If data is NULL, returns WvString::null; otherwise, returns an allocated
// WvString containing the C-style string constant that represents the data.
//
// All printable characters including space except " and \ are represented with
// escaping.
//
// The usual C escapes are performed, such as \n, \r, \", \\ and \0.
//
// All other characters are escaped in uppercase hex form, eg. \x9E
//
// The extra_escapes parameter allows for additional characters beyond
// the usual ones escaped in C; setting it to CSTR_TCLSTR_ESCAPES will
// escape { and } as \< and \>, which allows the resulting strings to be
// TCL-string coded without ridiculous double-escaping.
//
WvString cstr_escape(const void *data, size_t size,
        const CStrExtraEscape extra_escapes[] = NULL);

/// Converts a C-style string constant into data.
// 
// This function does *not* include the trailing null that a C compiler would --
//   if you want this null, put \0 at the end of the C-style string
// 
// If cstr is correctly formatted and max_size is large enough for the
// resulting data, returns true and size will equal the size of the
// resulting data.  If data is not NULL it will contain this data.
//
// If cstr is correctly formatted but max_size is too small for the resulting
// data, returns false and size will equal the minimum value of min_size
// for this function to have returned true.  If data is non-NULL it will
// contain the first max_size bytes of resulting data.
// 
// If cstr is incorrectly formatted, returns false and size will equal 0.
//
// This functions works just as well on multiple, whitespace-separated
// C-style strings as well.  This allows you to concatenate strings produced
// by cstr_escape, and the result of cstr_unescape will be the data blocks
// concatenated together.  This implies that the empty string corresponds
// to a valid data block of length zero; however, a null string still returns
// an error.
//
// The extra_escapes parameter must match that used in the call to 
// cstr_escape used to produce the escaped strings.
//
bool cstr_unescape(WvStringParm cstr, void *data, size_t max_size, size_t &size,
        const CStrExtraEscape extra_escapes[] = NULL);

static inline bool is_int(const char *str)
{
    if (!str)
        return false;
    
    if (*str == '-')
        ++str;
    
    if (!*str)
        return false;
    
    while (*str)
    	if (!isdigit(*str++))
    	    return false;
    	    
    return true;
}

/// Converts a pointer into a string, like glibc's %p formatter would
/// do.
WvString ptr2str(void* ptr);

#endif // __WVSTRUTILS_H