8 #include <sys/select.h>
10 #include <sys/types.h>
11 #define SHOW_ME_VAPPEND_PRINTF
13 #include "libcitadel.h"
25 int ZEXPORT compress_gzip(Bytef * dest, size_t * destLen,
26 const Bytef * source, uLong sourceLen, int level);
28 int BaseStrBufSize = 64;
30 const char *StrBufNOTNULL = ((char*) NULL) - 1;
32 const char HexList[256][3] = {
33 "00","01","02","03","04","05","06","07","08","09","0A","0B","0C","0D","0E","0F",
34 "10","11","12","13","14","15","16","17","18","19","1A","1B","1C","1D","1E","1F",
35 "20","21","22","23","24","25","26","27","28","29","2A","2B","2C","2D","2E","2F",
36 "30","31","32","33","34","35","36","37","38","39","3A","3B","3C","3D","3E","3F",
37 "40","41","42","43","44","45","46","47","48","49","4A","4B","4C","4D","4E","4F",
38 "50","51","52","53","54","55","56","57","58","59","5A","5B","5C","5D","5E","5F",
39 "60","61","62","63","64","65","66","67","68","69","6A","6B","6C","6D","6E","6F",
40 "70","71","72","73","74","75","76","77","78","79","7A","7B","7C","7D","7E","7F",
41 "80","81","82","83","84","85","86","87","88","89","8A","8B","8C","8D","8E","8F",
42 "90","91","92","93","94","95","96","97","98","99","9A","9B","9C","9D","9E","9F",
43 "A0","A1","A2","A3","A4","A5","A6","A7","A8","A9","AA","AB","AC","AD","AE","AF",
44 "B0","B1","B2","B3","B4","B5","B6","B7","B8","B9","BA","BB","BC","BD","BE","BF",
45 "C0","C1","C2","C3","C4","C5","C6","C7","C8","C9","CA","CB","CC","CD","CE","CF",
46 "D0","D1","D2","D3","D4","D5","D6","D7","D8","D9","DA","DB","DC","DD","DE","DF",
47 "E0","E1","E2","E3","E4","E5","E6","E7","E8","E9","EA","EB","EC","ED","EE","EF",
48 "F0","F1","F2","F3","F4","F5","F6","F7","F8","F9","FA","FB","FC","FD","FE","FF"};
51 * @defgroup StrBuf Stringbuffer, A class for manipulating strings with dynamic buffers
52 * StrBuf is a versatile class, aiding the handling of dynamic strings
53 * * reduce de/reallocations
54 * * reduce the need to remeasure it
55 * * reduce scanning over the string (in @ref StrBuf_NextTokenizer "Tokenizers")
56 * * allow asyncroneous IO for line and Blob based operations
57 * * reduce the use of memove in those
58 * * Quick filling in several operations with append functions
62 * @defgroup StrBuf_DeConstructors Create/Destroy StrBufs
67 * @defgroup StrBuf_Cast Cast operators to interact with char* based code
69 * use these operators to interfere with code demanding char*;
70 * if you need to own the content, smash me. Avoid, since we loose the length information.
74 * @defgroup StrBuf_Filler Create/Replace/Append Content into a StrBuf
76 * operations to get your Strings into a StrBuf, manipulating them, or appending
79 * @defgroup StrBuf_NextTokenizer Fast tokenizer to pull tokens in sequence
81 * Quick tokenizer; demands of the user to pull its tokens in sequence
85 * @defgroup StrBuf_Tokenizer tokenizer Functions; Slow ones.
87 * versatile tokenizer; random access to tokens, but slower; Prefer the @ref StrBuf_NextTokenizer "Next Tokenizer"
91 * @defgroup StrBuf_BufferedIO Buffered IO with Asynchroneous reads and no unneeded memmoves (the fast ones)
93 * File IO to fill StrBufs; Works with work-buffer shared across several calls;
94 * External Cursor to maintain the current read position inside of the buffer
95 * the non-fast ones will use memove to keep the start of the buffer the read buffer (which is slower)
99 * @defgroup StrBuf_IO FileIO; Prefer @ref StrBuf_BufferedIO
105 * @defgroup StrBuf_DeEnCoder functions to translate the contents of a buffer
107 * these functions translate the content of a buffer into another representation;
108 * some are combined Fillers and encoders
112 * Private Structure for the Stringbuffer
115 char *buf; /**< the pointer to the dynamic buffer */
116 long BufSize; /**< how many spcae do we optain */
117 long BufUsed; /**< StNumber of Chars used excluding the trailing \\0 */
118 int ConstBuf; /**< are we just a wrapper arround a static buffer and musn't we be changed? */
120 long nIncreases; /**< for profiling; cound how many times we needed more */
121 char bt [SIZ]; /**< Stacktrace of last increase */
122 char bt_lastinc [SIZ]; /**< How much did we increase last time? */
127 static inline int Ctdl_GetUtf8SequenceLength(const char *CharS, const char *CharE);
128 static inline int Ctdl_IsUtf8SequenceStart(const char Char);
131 #ifdef HAVE_BACKTRACE
132 static void StrBufBacktrace(StrBuf *Buf, int which)
136 void *stack_frames[50];
141 pstart = pch = Buf->bt;
143 pstart = pch = Buf->bt_lastinc;
144 size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
145 strings = backtrace_symbols(stack_frames, size);
146 for (i = 0; i < size; i++) {
148 n = snprintf(pch, SIZ - (pch - pstart), "%s\\n", strings[i]);
150 n = snprintf(pch, SIZ - (pch - pstart), "%p\\n", stack_frames[i]);
161 * @ingroup StrBuf_Cast
162 * @brief Cast operator to Plain String
163 * @note if the buffer is altered by StrBuf operations, this pointer may become
164 * invalid. So don't lean on it after altering the buffer!
165 * Since this operation is considered cheap, rather call it often than risking
166 * your pointer to become invalid!
167 * @param Str the string we want to get the c-string representation for
168 * @returns the Pointer to the Content. Don't mess with it!
170 inline const char *ChrPtr(const StrBuf *Str)
178 * @ingroup StrBuf_Cast
179 * @brief since we know strlen()'s result, provide it here.
180 * @param Str the string to return the length to
181 * @returns contentlength of the buffer
183 inline int StrLength(const StrBuf *Str)
185 return (Str != NULL) ? Str->BufUsed : 0;
189 * @ingroup StrBuf_DeConstructors
190 * @brief local utility function to resize the buffer
191 * @param Buf the buffer whichs storage we should increase
192 * @param KeepOriginal should we copy the original buffer or just start over with a new one
193 * @param DestSize what should fit in after?
195 static int IncreaseBuf(StrBuf *Buf, int KeepOriginal, int DestSize)
198 size_t NewSize = Buf->BufSize * 2;
204 while (NewSize <= DestSize)
207 NewBuf= (char*) malloc(NewSize);
211 if (KeepOriginal && (Buf->BufUsed > 0))
213 memcpy(NewBuf, Buf->buf, Buf->BufUsed);
222 Buf->BufSize = NewSize;
225 #ifdef HAVE_BACKTRACE
226 StrBufBacktrace(Buf, 1);
233 * @ingroup StrBuf_DeConstructors
234 * @brief shrink an _EMPTY_ buffer if its Buffer superseeds threshhold to NewSize. Buffercontent is thoroughly ignored and flushed.
235 * @param Buf Buffer to shrink (has to be empty)
236 * @param ThreshHold if the buffer is bigger then this, its readjusted
237 * @param NewSize if we Shrink it, how big are we going to be afterwards?
239 void ReAdjustEmptyBuf(StrBuf *Buf, long ThreshHold, long NewSize)
241 if (Buf->BufUsed > ThreshHold) {
243 Buf->buf = (char*) malloc(NewSize);
245 Buf->BufSize = NewSize;
250 * @ingroup StrBuf_DeConstructors
251 * @brief shrink long term buffers to their real size so they don't waste memory
252 * @param Buf buffer to shrink
253 * @param Force if not set, will just executed if the buffer is much to big; set for lifetime strings
254 * @returns physical size of the buffer
256 long StrBufShrinkToFit(StrBuf *Buf, int Force)
259 (Buf->BufUsed + (Buf->BufUsed / 3) > Buf->BufSize))
261 char *TmpBuf = (char*) malloc(Buf->BufUsed + 1);
262 memcpy (TmpBuf, Buf->buf, Buf->BufUsed + 1);
263 Buf->BufSize = Buf->BufUsed + 1;
271 * @ingroup StrBuf_DeConstructors
272 * @brief Allocate a new buffer with default buffer size
273 * @returns the new stringbuffer
275 StrBuf* NewStrBuf(void)
279 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
280 NewBuf->buf = (char*) malloc(BaseStrBufSize);
281 NewBuf->buf[0] = '\0';
282 NewBuf->BufSize = BaseStrBufSize;
284 NewBuf->ConstBuf = 0;
286 NewBuf->nIncreases = 0;
287 NewBuf->bt[0] = '\0';
288 NewBuf->bt_lastinc[0] = '\0';
289 #ifdef HAVE_BACKTRACE
290 StrBufBacktrace(NewBuf, 0);
297 * @ingroup StrBuf_DeConstructors
298 * @brief Copy Constructor; returns a duplicate of CopyMe
299 * @param CopyMe Buffer to faxmilate
300 * @returns the new stringbuffer
302 StrBuf* NewStrBufDup(const StrBuf *CopyMe)
309 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
310 NewBuf->buf = (char*) malloc(CopyMe->BufSize);
311 memcpy(NewBuf->buf, CopyMe->buf, CopyMe->BufUsed + 1);
312 NewBuf->BufUsed = CopyMe->BufUsed;
313 NewBuf->BufSize = CopyMe->BufSize;
314 NewBuf->ConstBuf = 0;
316 NewBuf->nIncreases = 0;
317 NewBuf->bt[0] = '\0';
318 NewBuf->bt_lastinc[0] = '\0';
319 #ifdef HAVE_BACKTRACE
320 StrBufBacktrace(NewBuf, 0);
327 * @ingroup StrBuf_DeConstructors
328 * @brief create a new Buffer using an existing c-string
329 * this function should also be used if you want to pre-suggest
330 * the buffer size to allocate in conjunction with ptr == NULL
331 * @param ptr the c-string to copy; may be NULL to create a blank instance
332 * @param nChars How many chars should we copy; -1 if we should measure the length ourselves
333 * @returns the new stringbuffer
335 StrBuf* NewStrBufPlain(const char* ptr, int nChars)
338 size_t Siz = BaseStrBufSize;
341 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
343 CopySize = strlen((ptr != NULL)?ptr:"");
347 while (Siz <= CopySize)
350 NewBuf->buf = (char*) malloc(Siz);
351 NewBuf->BufSize = Siz;
353 memcpy(NewBuf->buf, ptr, CopySize);
354 NewBuf->buf[CopySize] = '\0';
355 NewBuf->BufUsed = CopySize;
358 NewBuf->buf[0] = '\0';
361 NewBuf->ConstBuf = 0;
363 NewBuf->nIncreases = 0;
364 NewBuf->bt[0] = '\0';
365 NewBuf->bt_lastinc[0] = '\0';
366 #ifdef HAVE_BACKTRACE
367 StrBufBacktrace(NewBuf, 0);
374 * @ingroup StrBuf_DeConstructors
375 * @brief Set an existing buffer from a c-string
376 * @param Buf buffer to load
377 * @param ptr c-string to put into
378 * @param nChars set to -1 if we should work 0-terminated
379 * @returns the new length of the string
381 int StrBufPlain(StrBuf *Buf, const char* ptr, int nChars)
383 size_t Siz = Buf->BufSize;
387 CopySize = strlen(ptr);
391 while (Siz <= CopySize)
394 if (Siz != Buf->BufSize)
395 IncreaseBuf(Buf, 0, Siz);
396 memcpy(Buf->buf, ptr, CopySize);
397 Buf->buf[CopySize] = '\0';
398 Buf->BufUsed = CopySize;
405 * @ingroup StrBuf_DeConstructors
406 * @brief use strbuf as wrapper for a string constant for easy handling
407 * @param StringConstant a string to wrap
408 * @param SizeOfStrConstant should be sizeof(StringConstant)-1
410 StrBuf* _NewConstStrBuf(const char* StringConstant, size_t SizeOfStrConstant)
414 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
415 NewBuf->buf = (char*) StringConstant;
416 NewBuf->BufSize = SizeOfStrConstant;
417 NewBuf->BufUsed = SizeOfStrConstant;
418 NewBuf->ConstBuf = 1;
420 NewBuf->nIncreases = 0;
421 NewBuf->bt[0] = '\0';
422 NewBuf->bt_lastinc[0] = '\0';
429 * @ingroup StrBuf_DeConstructors
430 * @brief flush the content of a Buf; keep its struct
431 * @param buf Buffer to flush
433 int FlushStrBuf(StrBuf *buf)
445 * @ingroup StrBuf_DeConstructors
446 * @brief wipe the content of a Buf thoroughly (overwrite it -> expensive); keep its struct
447 * @param buf Buffer to wipe
449 int FLUSHStrBuf(StrBuf *buf)
455 if (buf->BufUsed > 0) {
456 memset(buf->buf, 0, buf->BufUsed);
463 int hFreeDbglog = -1;
466 * @ingroup StrBuf_DeConstructors
467 * @brief Release a Buffer
468 * Its a double pointer, so it can NULL your pointer
469 * so fancy SIG11 appear instead of random results
470 * @param FreeMe Pointer Pointer to the buffer to free
472 void FreeStrBuf (StrBuf **FreeMe)
477 if (hFreeDbglog == -1){
478 pid_t pid = getpid();
480 snprintf(path, SIZ, "/tmp/libcitadel_strbuf_realloc.log.%d", pid);
481 hFreeDbglog = open(path, O_APPEND|O_CREAT|O_WRONLY);
483 if ((*FreeMe)->nIncreases > 0)
487 n = snprintf(buf, SIZ * 3, "+|%ld|%ld|%ld|%s|%s|\n",
488 (*FreeMe)->nIncreases,
492 (*FreeMe)->bt_lastinc);
493 n = write(hFreeDbglog, buf, n);
499 n = snprintf(buf, 128, "_|0|%ld%ld|\n",
502 n = write(hFreeDbglog, buf, n);
505 if (!(*FreeMe)->ConstBuf)
506 free((*FreeMe)->buf);
512 * @ingroup StrBuf_DeConstructors
513 * @brief flatten a Buffer to the Char * we return
514 * Its a double pointer, so it can NULL your pointer
515 * so fancy SIG11 appear instead of random results
516 * The Callee then owns the buffer and is responsible for freeing it.
517 * @param SmashMe Pointer Pointer to the buffer to release Buf from and free
518 * @returns the pointer of the buffer; Callee owns the memory thereafter.
520 char *SmashStrBuf (StrBuf **SmashMe)
524 if (*SmashMe == NULL)
527 if (hFreeDbglog == -1){
528 pid_t pid = getpid();
530 snprintf(path, SIZ, "/tmp/libcitadel_strbuf_realloc.log.%d", pid);
531 hFreeDbglog = open(path, O_APPEND|O_CREAT|O_WRONLY);
533 if ((*SmashMe)->nIncreases > 0)
537 n = snprintf(buf, SIZ * 3, "S+|%ld|%ld|%ld|%s|%s|\n",
538 (*SmashMe)->nIncreases,
542 (*SmashMe)->bt_lastinc);
543 n = write(hFreeDbglog, buf, n);
549 n = snprintf(buf, 128, "S_|0|%ld%ld|\n",
551 (*SmashMe)->BufSize);
552 n = write(hFreeDbglog, buf, n);
555 Ret = (*SmashMe)->buf;
562 * @ingroup StrBuf_DeConstructors
563 * @brief Release the buffer
564 * If you want put your StrBuf into a Hash, use this as Destructor.
565 * @param VFreeMe untyped pointer to a StrBuf. be shure to do the right thing [TM]
567 void HFreeStrBuf (void *VFreeMe)
569 StrBuf *FreeMe = (StrBuf*)VFreeMe;
573 if (hFreeDbglog == -1){
574 pid_t pid = getpid();
576 snprintf(path, SIZ, "/tmp/libcitadel_strbuf_realloc.log.%d", pid);
577 hFreeDbglog = open(path, O_APPEND|O_CREAT|O_WRONLY);
579 if (FreeMe->nIncreases > 0)
583 n = snprintf(buf, SIZ * 3, "+|%ld|%ld|%ld|%s|%s|\n",
589 write(hFreeDbglog, buf, n);
595 n = snprintf(buf, 128, "_|%ld|%ld%ld|\n",
601 if (!FreeMe->ConstBuf)
608 * @brief Wrapper around atol
610 long StrTol(const StrBuf *Buf)
615 return atol(Buf->buf);
622 * @brief Wrapper around atoi
624 int StrToi(const StrBuf *Buf)
628 if (Buf->BufUsed > 0)
629 return atoi(Buf->buf);
636 * @brief Checks to see if the string is a pure number
638 int StrBufIsNumber(const StrBuf *Buf) {
643 strtoll(Buf->buf, &pEnd, 10);
644 if (pEnd == NULL && ((Buf->buf)-pEnd) != 0) {
651 * @brief modifies a Single char of the Buf
652 * You can point to it via char* or a zero-based integer
653 * @param Buf The buffer to manipulate
654 * @param ptr char* to zero; use NULL if unused
655 * @param nThChar zero based pointer into the string; use -1 if unused
656 * @param PeekValue The Character to place into the position
658 long StrBufPeek(StrBuf *Buf, const char* ptr, long nThChar, char PeekValue)
663 nThChar = ptr - Buf->buf;
664 if ((nThChar < 0) || (nThChar > Buf->BufUsed))
666 Buf->buf[nThChar] = PeekValue;
672 * @brief Append a StringBuffer to the buffer
673 * @param Buf Buffer to modify
674 * @param AppendBuf Buffer to copy at the end of our buffer
675 * @param Offset Should we start copying from an offset?
677 void StrBufAppendBuf(StrBuf *Buf, const StrBuf *AppendBuf, unsigned long Offset)
679 if ((AppendBuf == NULL) || (Buf == NULL) || (AppendBuf->buf == NULL))
682 if (Buf->BufSize - Offset < AppendBuf->BufUsed + Buf->BufUsed + 1)
685 AppendBuf->BufUsed + Buf->BufUsed);
687 memcpy(Buf->buf + Buf->BufUsed,
688 AppendBuf->buf + Offset,
689 AppendBuf->BufUsed - Offset);
690 Buf->BufUsed += AppendBuf->BufUsed - Offset;
691 Buf->buf[Buf->BufUsed] = '\0';
697 * @brief Append a C-String to the buffer
698 * @param Buf Buffer to modify
699 * @param AppendBuf Buffer to copy at the end of our buffer
700 * @param AppendSize number of bytes to copy; set to -1 if we should count it in advance
701 * @param Offset Should we start copying from an offset?
703 void StrBufAppendBufPlain(StrBuf *Buf, const char *AppendBuf, long AppendSize, unsigned long Offset)
706 long BufSizeRequired;
708 if ((AppendBuf == NULL) || (Buf == NULL))
712 aps = strlen(AppendBuf + Offset);
714 aps = AppendSize - Offset;
716 BufSizeRequired = Buf->BufUsed + aps + 1;
717 if (Buf->BufSize <= BufSizeRequired)
718 IncreaseBuf(Buf, (Buf->BufUsed > 0), BufSizeRequired);
720 memcpy(Buf->buf + Buf->BufUsed,
724 Buf->buf[Buf->BufUsed] = '\0';
729 * @brief Callback for cURL to append the webserver reply to a buffer
730 * @param ptr pre-defined by the cURL API; see man 3 curl for mre info
731 * @param size pre-defined by the cURL API; see man 3 curl for mre info
732 * @param nmemb pre-defined by the cURL API; see man 3 curl for mre info
733 * @param stream pre-defined by the cURL API; see man 3 curl for mre info
735 size_t CurlFillStrBuf_callback(void *ptr, size_t size, size_t nmemb, void *stream)
744 StrBufAppendBufPlain(Target, ptr, size * nmemb, 0);
750 * @ingroup StrBuf_DeEnCoder
751 * @brief Escape a string for feeding out as a URL while appending it to a Buffer
752 * @param OutBuf the output buffer
753 * @param In Buffer to encode
754 * @param PlainIn way in from plain old c strings
756 void StrBufUrlescAppend(StrBuf *OutBuf, const StrBuf *In, const char *PlainIn)
758 const char *pch, *pche;
762 if (((In == NULL) && (PlainIn == NULL)) || (OutBuf == NULL) )
764 if (PlainIn != NULL) {
765 len = strlen(PlainIn);
771 pche = pch + In->BufUsed;
778 pt = OutBuf->buf + OutBuf->BufUsed;
779 pte = OutBuf->buf + OutBuf->BufSize - 4; /**< we max append 3 chars at once plus the \0 */
783 IncreaseBuf(OutBuf, 1, -1);
784 pte = OutBuf->buf + OutBuf->BufSize - 4; /**< we max append 3 chars at once plus the \0 */
785 pt = OutBuf->buf + OutBuf->BufUsed;
788 if((*pch >= 'a' && *pch <= 'z') ||
789 (*pch >= '@' && *pch <= 'Z') || /* @ A-Z */
790 (*pch >= '0' && *pch <= ':') || /* 0-9 : */
791 (*pch == '!') || (*pch == '_') ||
792 (*pch == ',') || (*pch == '.') ||
800 *(pt + 1) = HexList[(unsigned char)*pch][0];
801 *(pt + 2) = HexList[(unsigned char)*pch][1];
803 OutBuf->BufUsed += 3;
811 * @ingroup StrBuf_DeEnCoder
812 * @brief Append a string, escaping characters which have meaning in HTML.
814 * @param Target target buffer
815 * @param Source source buffer; set to NULL if you just have a C-String
816 * @param PlainIn Plain-C string to append; set to NULL if unused
817 * @param nbsp If nonzero, spaces are converted to non-breaking spaces.
818 * @param nolinebreaks if set to 1, linebreaks are removed from the string.
819 * if set to 2, linebreaks are replaced by <br/>
821 long StrEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn, int nbsp, int nolinebreaks)
823 const char *aptr, *eiptr;
827 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
830 if (PlainIn != NULL) {
832 len = strlen(PlainIn);
837 eiptr = aptr + Source->BufUsed;
838 len = Source->BufUsed;
844 bptr = Target->buf + Target->BufUsed;
845 eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
847 while (aptr < eiptr){
849 IncreaseBuf(Target, 1, -1);
850 eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
851 bptr = Target->buf + Target->BufUsed;
854 memcpy(bptr, "<", 4);
856 Target->BufUsed += 4;
858 else if (*aptr == '>') {
859 memcpy(bptr, ">", 4);
861 Target->BufUsed += 4;
863 else if (*aptr == '&') {
864 memcpy(bptr, "&", 5);
866 Target->BufUsed += 5;
868 else if (*aptr == '"') {
869 memcpy(bptr, """, 6);
871 Target->BufUsed += 6;
873 else if (*aptr == '\'') {
874 memcpy(bptr, "'", 5);
876 Target->BufUsed += 5;
878 else if (*aptr == LB) {
883 else if (*aptr == RB) {
888 else if (*aptr == QU) {
893 else if ((*aptr == 32) && (nbsp == 1)) {
894 memcpy(bptr, " ", 6);
896 Target->BufUsed += 6;
898 else if ((*aptr == '\n') && (nolinebreaks == 1)) {
899 *bptr='\0'; /* nothing */
901 else if ((*aptr == '\n') && (nolinebreaks == 2)) {
902 memcpy(bptr, "<br/>", 11);
904 Target->BufUsed += 11;
908 else if ((*aptr == '\r') && (nolinebreaks != 0)) {
909 *bptr='\0'; /* nothing */
919 if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
921 return Target->BufUsed;
925 * @ingroup StrBuf_DeEnCoder
926 * @brief Append a string, escaping characters which have meaning in HTML.
927 * Converts linebreaks into blanks; escapes single quotes
928 * @param Target target buffer
929 * @param Source source buffer; set to NULL if you just have a C-String
930 * @param PlainIn Plain-C string to append; set to NULL if unused
932 void StrMsgEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn)
934 const char *aptr, *eiptr;
938 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
941 if (PlainIn != NULL) {
943 len = strlen(PlainIn);
948 eiptr = aptr + Source->BufUsed;
949 len = Source->BufUsed;
955 eptr = Target->buf + Target->BufSize - 8;
956 tptr = Target->buf + Target->BufUsed;
958 while (aptr < eiptr){
960 IncreaseBuf(Target, 1, -1);
961 eptr = Target->buf + Target->BufSize - 8;
962 tptr = Target->buf + Target->BufUsed;
969 else if (*aptr == '\r') {
973 else if (*aptr == '\'') {
979 Target->BufUsed += 5;
992 * @ingroup StrBuf_DeEnCoder
993 * @brief Append a string, escaping characters which have meaning in ICAL.
995 * @param Target target buffer
996 * @param Source source buffer; set to NULL if you just have a C-String
997 * @param PlainIn Plain-C string to append; set to NULL if unused
999 void StrIcalEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn)
1001 const char *aptr, *eiptr;
1005 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
1008 if (PlainIn != NULL) {
1010 len = strlen(PlainIn);
1015 eiptr = aptr + Source->BufUsed;
1016 len = Source->BufUsed;
1022 eptr = Target->buf + Target->BufSize - 8;
1023 tptr = Target->buf + Target->BufUsed;
1025 while (aptr < eiptr){
1026 if(tptr + 3 >= eptr) {
1027 IncreaseBuf(Target, 1, -1);
1028 eptr = Target->buf + Target->BufSize - 8;
1029 tptr = Target->buf + Target->BufUsed;
1032 if (*aptr == '\n') {
1039 else if (*aptr == '\r') {
1046 else if (*aptr == ',') {
1062 * @ingroup StrBuf_DeEnCoder
1063 * @brief Append a string, escaping characters which have meaning in JavaScript strings .
1065 * @param Target target buffer
1066 * @param Source source buffer; set to NULL if you just have a C-String
1067 * @param PlainIn Plain-C string to append; set to NULL if unused
1068 * @returns size of result or -1
1070 long StrECMAEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn)
1072 const char *aptr, *eiptr;
1076 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
1079 if (PlainIn != NULL) {
1081 len = strlen(PlainIn);
1086 eiptr = aptr + Source->BufUsed;
1087 len = Source->BufUsed;
1093 bptr = Target->buf + Target->BufUsed;
1094 eptr = Target->buf + Target->BufSize - 3; /* our biggest unit to put in... */
1096 while (aptr < eiptr){
1098 IncreaseBuf(Target, 1, -1);
1099 eptr = Target->buf + Target->BufSize - 3;
1100 bptr = Target->buf + Target->BufUsed;
1107 Target->BufUsed += 2;
1108 } else if (*aptr == '\\') {
1113 Target->BufUsed += 2;
1123 if ((bptr == eptr - 1 ) && !IsEmptyStr(aptr) )
1125 return Target->BufUsed;
1129 * @ingroup StrBuf_DeEnCoder
1130 * @brief Append a string, escaping characters which have meaning in HTML + json.
1132 * @param Target target buffer
1133 * @param Source source buffer; set to NULL if you just have a C-String
1134 * @param PlainIn Plain-C string to append; set to NULL if unused
1135 * @param nbsp If nonzero, spaces are converted to non-breaking spaces.
1136 * @param nolinebreaks if set to 1, linebreaks are removed from the string.
1137 * if set to 2, linebreaks are replaced by <br/>
1139 long StrHtmlEcmaEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn, int nbsp, int nolinebreaks)
1141 const char *aptr, *eiptr;
1144 int IsUtf8Sequence = 0;
1146 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
1149 if (PlainIn != NULL) {
1151 len = strlen(PlainIn);
1156 eiptr = aptr + Source->BufUsed;
1157 len = Source->BufUsed;
1163 bptr = Target->buf + Target->BufUsed;
1164 eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
1166 while (aptr < eiptr){
1168 IncreaseBuf(Target, 1, -1);
1169 eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
1170 bptr = Target->buf + Target->BufUsed;
1173 memcpy(bptr, "<", 4);
1175 Target->BufUsed += 4;
1177 else if (*aptr == '>') {
1178 memcpy(bptr, ">", 4);
1180 Target->BufUsed += 4;
1182 else if (*aptr == '&') {
1183 memcpy(bptr, "&", 5);
1185 Target->BufUsed += 5;
1187 else if (*aptr == LB) {
1192 else if (*aptr == RB) {
1197 else if ((*aptr == 32) && (nbsp == 1)) {
1198 memcpy(bptr, " ", 6);
1200 Target->BufUsed += 6;
1202 else if ((*aptr == '\n') && (nolinebreaks == 1)) {
1203 *bptr='\0'; /* nothing */
1205 else if ((*aptr == '\n') && (nolinebreaks == 2)) {
1206 memcpy(bptr, "<br/>", 11);
1208 Target->BufUsed += 11;
1211 else if ((*aptr == '\r') && (nolinebreaks != 0)) {
1212 *bptr='\0'; /* nothing */
1215 else if ((*aptr == '"') || (*aptr == QU)) {
1220 Target->BufUsed += 2;
1221 } else if (*aptr == '\\') {
1226 Target->BufUsed += 2;
1229 if (((unsigned char)*aptr) >= 0x20)
1231 IsUtf8Sequence = Ctdl_GetUtf8SequenceLength(aptr, eiptr);
1235 while (IsUtf8Sequence > 1){
1236 if(bptr + IsUtf8Sequence >= eptr) {
1237 IncreaseBuf(Target, 1, -1);
1238 eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
1239 bptr = Target->buf + Target->BufUsed - 1;
1253 if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
1255 return Target->BufUsed;
1261 * @brief extracts a substring from Source into dest
1262 * @param dest buffer to place substring into
1263 * @param Source string to copy substring from
1264 * @param Offset chars to skip from start
1265 * @param nChars number of chars to copy
1266 * @returns the number of chars copied; may be different from nChars due to the size of Source
1268 int StrBufSub(StrBuf *dest, const StrBuf *Source, unsigned long Offset, size_t nChars)
1270 size_t NCharsRemain;
1271 if (Offset > Source->BufUsed)
1276 if (Offset + nChars < Source->BufUsed)
1278 if (nChars >= dest->BufSize)
1279 IncreaseBuf(dest, 0, nChars + 1);
1280 memcpy(dest->buf, Source->buf + Offset, nChars);
1281 dest->BufUsed = nChars;
1282 dest->buf[dest->BufUsed] = '\0';
1285 NCharsRemain = Source->BufUsed - Offset;
1286 if (NCharsRemain >= dest->BufSize)
1287 IncreaseBuf(dest, 0, NCharsRemain + 1);
1288 memcpy(dest->buf, Source->buf + Offset, NCharsRemain);
1289 dest->BufUsed = NCharsRemain;
1290 dest->buf[dest->BufUsed] = '\0';
1291 return NCharsRemain;
1296 * @brief sprintf like function appending the formated string to the buffer
1297 * vsnprintf version to wrap into own calls
1298 * @param Buf Buffer to extend by format and Params
1299 * @param format printf alike format to add
1300 * @param ap va_list containing the items for format
1302 void StrBufVAppendPrintf(StrBuf *Buf, const char *format, va_list ap)
1310 if ((Buf == NULL) || (format == NULL))
1313 BufSize = Buf->BufSize;
1314 nWritten = Buf->BufSize + 1;
1315 Offset = Buf->BufUsed;
1316 newused = Offset + nWritten;
1318 while (newused >= BufSize) {
1320 nWritten = vsnprintf(Buf->buf + Offset,
1321 Buf->BufSize - Offset,
1324 newused = Offset + nWritten;
1325 if (newused >= Buf->BufSize) {
1326 IncreaseBuf(Buf, 1, newused);
1327 newused = Buf->BufSize + 1;
1330 Buf->BufUsed = Offset + nWritten;
1331 BufSize = Buf->BufSize;
1339 * @brief sprintf like function appending the formated string to the buffer
1340 * @param Buf Buffer to extend by format and Params
1341 * @param format printf alike format to add
1343 void StrBufAppendPrintf(StrBuf *Buf, const char *format, ...)
1351 if ((Buf == NULL) || (format == NULL))
1354 BufSize = Buf->BufSize;
1355 nWritten = Buf->BufSize + 1;
1356 Offset = Buf->BufUsed;
1357 newused = Offset + nWritten;
1359 while (newused >= BufSize) {
1360 va_start(arg_ptr, format);
1361 nWritten = vsnprintf(Buf->buf + Buf->BufUsed,
1362 Buf->BufSize - Buf->BufUsed,
1365 newused = Buf->BufUsed + nWritten;
1366 if (newused >= Buf->BufSize) {
1367 IncreaseBuf(Buf, 1, newused);
1368 newused = Buf->BufSize + 1;
1371 Buf->BufUsed += nWritten;
1372 BufSize = Buf->BufSize;
1380 * @brief sprintf like function putting the formated string into the buffer
1381 * @param Buf Buffer to extend by format and Parameters
1382 * @param format printf alike format to add
1384 void StrBufPrintf(StrBuf *Buf, const char *format, ...)
1389 if ((Buf == NULL) || (format == NULL))
1392 nWritten = Buf->BufSize + 1;
1393 while (nWritten >= Buf->BufSize) {
1394 va_start(arg_ptr, format);
1395 nWritten = vsnprintf(Buf->buf, Buf->BufSize, format, arg_ptr);
1397 if (nWritten >= Buf->BufSize) {
1398 IncreaseBuf(Buf, 0, 0);
1399 nWritten = Buf->BufSize + 1;
1402 Buf->BufUsed = nWritten ;
1408 * @ingroup StrBuf_Tokenizer
1409 * @brief Counts the numbmer of tokens in a buffer
1410 * @param source String to count tokens in
1411 * @param tok Tokenizer char to count
1412 * @returns numbers of tokenizer chars found
1414 int StrBufNum_tokens(const StrBuf *source, char tok)
1418 return num_tokens(source->buf, tok);
1422 * remove_token() - a tokenizer that kills, maims, and destroys
1425 * @ingroup StrBuf_Tokenizer
1426 * @brief a string tokenizer
1427 * @param Source StringBuffer to read into
1428 * @param parmnum n'th Parameter to remove
1429 * @param separator tokenizer character
1430 * @returns -1 if not found, else length of token.
1432 int StrBufRemove_token(StrBuf *Source, int parmnum, char separator)
1435 char *d, *s, *end; /* dest, source */
1438 /* Find desired @parameter */
1439 end = Source->buf + Source->BufUsed;
1441 while ((d <= end) &&
1444 /* End of string, bail! */
1449 if (*d == separator) {
1454 if ((d == NULL) || (d >= end))
1455 return 0; /* @Parameter not found */
1457 /* Find next @parameter */
1459 while ((s <= end) &&
1460 (*s && *s != separator))
1464 if (*s == separator)
1468 /* Hack and slash */
1473 memmove(d, s, Source->BufUsed - (s - Source->buf));
1474 Source->BufUsed += ReducedBy;
1475 Source->buf[Source->BufUsed] = '\0';
1477 else if (d == Source->buf) {
1479 Source->BufUsed = 0;
1483 Source->BufUsed += ReducedBy;
1496 * @ingroup StrBuf_Tokenizer
1497 * @brief a string tokenizer
1498 * @param dest Destination StringBuffer
1499 * @param Source StringBuffer to read into
1500 * @param parmnum n'th Parameter to extract
1501 * @param separator tokenizer character
1502 * @returns -1 if not found, else length of token.
1504 int StrBufExtract_token(StrBuf *dest, const StrBuf *Source, int parmnum, char separator)
1506 const char *s, *e; //* source * /
1507 int len = 0; //* running total length of extracted string * /
1508 int current_token = 0; //* token currently being processed * /
1511 dest->buf[0] = '\0';
1517 if ((Source == NULL) || (Source->BufUsed ==0)) {
1521 e = s + Source->BufUsed;
1524 //lprintf (CTDL_DEBUG, "test >: n: %d sep: %c source: %s \n willi \n", parmnum, separator, source);
1526 while ((s<e) && !IsEmptyStr(s)) {
1527 if (*s == separator) {
1530 if (len >= dest->BufSize) {
1531 dest->BufUsed = len;
1532 if (IncreaseBuf(dest, 1, -1) < 0) {
1537 if ( (current_token == parmnum) &&
1538 (*s != separator)) {
1539 dest->buf[len] = *s;
1542 else if (current_token > parmnum) {
1548 dest->buf[len] = '\0';
1549 dest->BufUsed = len;
1551 if (current_token < parmnum) {
1552 //lprintf (CTDL_DEBUG,"test <!: %s\n", dest);
1555 //lprintf (CTDL_DEBUG,"test <: %d; %s\n", len, dest);
1564 * @ingroup StrBuf_Tokenizer
1565 * @brief a string tokenizer to fetch an integer
1566 * @param Source String containing tokens
1567 * @param parmnum n'th Parameter to extract
1568 * @param separator tokenizer character
1569 * @returns 0 if not found, else integer representation of the token
1571 int StrBufExtract_int(const StrBuf* Source, int parmnum, char separator)
1581 if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
1588 * @ingroup StrBuf_Tokenizer
1589 * @brief a string tokenizer to fetch a long integer
1590 * @param Source String containing tokens
1591 * @param parmnum n'th Parameter to extract
1592 * @param separator tokenizer character
1593 * @returns 0 if not found, else long integer representation of the token
1595 long StrBufExtract_long(const StrBuf* Source, int parmnum, char separator)
1605 if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
1613 * @ingroup StrBuf_Tokenizer
1614 * @brief a string tokenizer to fetch an unsigned long
1615 * @param Source String containing tokens
1616 * @param parmnum n'th Parameter to extract
1617 * @param separator tokenizer character
1618 * @returns 0 if not found, else unsigned long representation of the token
1620 unsigned long StrBufExtract_unsigned_long(const StrBuf* Source, int parmnum, char separator)
1631 if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0) {
1635 return (unsigned long) atol(pnum);
1644 * @ingroup StrBuf_NextTokenizer
1645 * @brief a string tokenizer; Bounds checker
1646 * function to make shure whether StrBufExtract_NextToken and friends have reached the end of the string.
1647 * @param Source our tokenbuffer
1648 * @param pStart the token iterator pointer to inspect
1649 * @returns whether the revolving pointer is inside of the search range
1651 int StrBufHaveNextToken(const StrBuf *Source, const char **pStart)
1653 if ((Source == NULL) ||
1654 (*pStart == StrBufNOTNULL) ||
1655 (Source->BufUsed == 0))
1659 if (*pStart == NULL)
1663 else if (*pStart > Source->buf + Source->BufUsed)
1667 else if (*pStart <= Source->buf)
1676 * @ingroup StrBuf_NextTokenizer
1677 * @brief a string tokenizer
1678 * @param dest Destination StringBuffer
1679 * @param Source StringBuffer to read into
1680 * @param pStart pointer to the end of the last token. Feed with NULL on start.
1681 * @param separator tokenizer
1682 * @returns -1 if not found, else length of token.
1684 int StrBufExtract_NextToken(StrBuf *dest, const StrBuf *Source, const char **pStart, char separator)
1686 const char *s; /* source */
1687 const char *EndBuffer; /* end stop of source buffer */
1688 int current_token = 0; /* token currently being processed */
1689 int len = 0; /* running total length of extracted string */
1691 if ((Source == NULL) ||
1692 (Source->BufUsed == 0) )
1694 *pStart = StrBufNOTNULL;
1698 EndBuffer = Source->buf + Source->BufUsed;
1702 dest->buf[0] = '\0';
1707 *pStart = EndBuffer + 1;
1711 if (*pStart == NULL)
1713 *pStart = Source->buf; /* we're starting to examine this buffer. */
1715 else if ((*pStart < Source->buf) ||
1716 (*pStart > EndBuffer ) )
1718 return -1; /* no more tokens to find. */
1722 /* start to find the next token */
1723 while ((s <= EndBuffer) &&
1724 (current_token == 0) )
1726 if (*s == separator)
1728 /* we found the next token */
1732 if (len >= dest->BufSize)
1734 /* our Dest-buffer isn't big enough, increase it. */
1735 dest->BufUsed = len;
1737 if (IncreaseBuf(dest, 1, -1) < 0) {
1738 /* WHUT? no more mem? bail out. */
1745 if ( (current_token == 0 ) && /* are we in our target token? */
1746 (!IsEmptyStr(s) ) &&
1747 (separator != *s) ) /* don't copy the token itself */
1749 dest->buf[len] = *s; /* Copy the payload */
1750 ++len; /* remember the bigger size. */
1756 /* did we reach the end? */
1757 if ((s > EndBuffer)) {
1758 EndBuffer = StrBufNOTNULL;
1759 *pStart = EndBuffer;
1762 *pStart = s; /* remember the position for the next run */
1765 /* sanitize our extracted token */
1766 dest->buf[len] = '\0';
1767 dest->BufUsed = len;
1774 * @ingroup StrBuf_NextTokenizer
1775 * @brief a string tokenizer
1776 * @param Source StringBuffer to read from
1777 * @param pStart pointer to the end of the last token. Feed with NULL.
1778 * @param separator tokenizer character
1779 * @param nTokens number of tokens to fastforward over
1780 * @returns -1 if not found, else length of token.
1782 int StrBufSkip_NTokenS(const StrBuf *Source, const char **pStart, char separator, int nTokens)
1784 const char *s, *EndBuffer; //* source * /
1785 int len = 0; //* running total length of extracted string * /
1786 int current_token = 0; //* token currently being processed * /
1788 if ((Source == NULL) ||
1789 (Source->BufUsed ==0)) {
1793 return Source->BufUsed;
1795 if (*pStart == NULL)
1796 *pStart = Source->buf;
1798 EndBuffer = Source->buf + Source->BufUsed;
1800 if ((*pStart < Source->buf) ||
1801 (*pStart > EndBuffer)) {
1809 //lprintf (CTDL_DEBUG, "test >: n: %d sep: %c source: %s \n willi \n", parmnum, separator, source);
1811 while ((s<EndBuffer) && !IsEmptyStr(s)) {
1812 if (*s == separator) {
1815 if (current_token >= nTokens) {
1827 * @ingroup StrBuf_NextTokenizer
1828 * @brief a string tokenizer to fetch an integer
1829 * @param Source StringBuffer to read from
1830 * @param pStart Cursor on the tokenstring
1831 * @param separator tokenizer character
1832 * @returns 0 if not found, else integer representation of the token
1834 int StrBufExtractNext_int(const StrBuf* Source, const char **pStart, char separator)
1844 if (StrBufExtract_NextToken(&tmp, Source, pStart, separator) > 0)
1851 * @ingroup StrBuf_NextTokenizer
1852 * @brief a string tokenizer to fetch a long integer
1853 * @param Source StringBuffer to read from
1854 * @param pStart Cursor on the tokenstring
1855 * @param separator tokenizer character
1856 * @returns 0 if not found, else long integer representation of the token
1858 long StrBufExtractNext_long(const StrBuf* Source, const char **pStart, char separator)
1868 if (StrBufExtract_NextToken(&tmp, Source, pStart, separator) > 0)
1876 * @ingroup StrBuf_NextTokenizer
1877 * @brief a string tokenizer to fetch an unsigned long
1878 * @param Source StringBuffer to read from
1879 * @param pStart Cursor on the tokenstring
1880 * @param separator tokenizer character
1881 * @returns 0 if not found, else unsigned long representation of the token
1883 unsigned long StrBufExtractNext_unsigned_long(const StrBuf* Source, const char **pStart, char separator)
1894 if (StrBufExtract_NextToken(&tmp, Source, pStart, separator) > 0) {
1898 return (unsigned long) atol(pnum);
1907 * @ingroup StrBuf_IO
1908 * @brief Read a line from socket
1909 * flushes and closes the FD on error
1910 * @param buf the buffer to get the input to
1911 * @param fd pointer to the filedescriptor to read
1912 * @param append Append to an existing string or replace?
1913 * @param Error strerror() on error
1914 * @returns numbers of chars read
1916 int StrBufTCP_read_line(StrBuf *buf, int *fd, int append, const char **Error)
1918 int len, rlen, slen;
1923 slen = len = buf->BufUsed;
1925 rlen = read(*fd, &buf->buf[len], 1);
1927 *Error = strerror(errno);
1934 if (buf->buf[len] == '\n')
1936 if (buf->buf[len] != '\r')
1938 if (len + 2 >= buf->BufSize) {
1940 buf->buf[len+1] = '\0';
1941 IncreaseBuf(buf, 1, -1);
1945 buf->buf[len] = '\0';
1950 * @ingroup StrBuf_BufferedIO
1951 * @brief Read a line from socket
1952 * flushes and closes the FD on error
1953 * @param Line the line to read from the fd / I/O Buffer
1954 * @param buf the buffer to get the input to
1955 * @param fd pointer to the filedescriptor to read
1956 * @param timeout number of successless selects until we bail out
1957 * @param selectresolution how long to wait on each select
1958 * @param Error strerror() on error
1959 * @returns numbers of chars read
1961 int StrBufTCP_read_buffered_line(StrBuf *Line,
1965 int selectresolution,
1969 int nSuccessLess = 0;
1976 if (buf->BufUsed > 0) {
1977 pch = strchr(buf->buf, '\n');
1980 len = pch - buf->buf;
1981 if (len > 0 && (*(pch - 1) == '\r') )
1983 StrBufSub(Line, buf, 0, len - rlen);
1984 StrBufCutLeft(buf, len + 1);
1989 if (buf->BufSize - buf->BufUsed < 10)
1990 IncreaseBuf(buf, 1, -1);
1992 fdflags = fcntl(*fd, F_GETFL);
1993 IsNonBlock = (fdflags & O_NONBLOCK) == O_NONBLOCK;
1995 while ((nSuccessLess < timeout) && (pch == NULL)) {
1997 tv.tv_sec = selectresolution;
2002 if (select(*fd + 1, NULL, &rfds, NULL, &tv) == -1) {
2003 *Error = strerror(errno);
2009 if (IsNonBlock && ! FD_ISSET(*fd, &rfds)) {
2014 &buf->buf[buf->BufUsed],
2015 buf->BufSize - buf->BufUsed - 1);
2017 *Error = strerror(errno);
2022 else if (rlen > 0) {
2024 buf->BufUsed += rlen;
2025 buf->buf[buf->BufUsed] = '\0';
2026 if (buf->BufUsed + 10 > buf->BufSize) {
2027 IncreaseBuf(buf, 1, -1);
2029 pch = strchr(buf->buf, '\n');
2036 len = pch - buf->buf;
2037 if (len > 0 && (*(pch - 1) == '\r') )
2039 StrBufSub(Line, buf, 0, len - rlen);
2040 StrBufCutLeft(buf, len + 1);
2047 static const char *ErrRBLF_PreConditionFailed="StrBufTCP_read_buffered_line_fast: Wrong arguments or invalid Filedescriptor";
2048 static const char *ErrRBLF_SelectFailed="StrBufTCP_read_buffered_line_fast: Select failed without reason";
2049 static const char *ErrRBLF_NotEnoughSentFromServer="StrBufTCP_read_buffered_line_fast: No complete line was sent from peer";
2051 * @ingroup StrBuf_BufferedIO
2052 * @brief Read a line from socket
2053 * flushes and closes the FD on error
2054 * @param Line Line to read from the fd / I/O Buffer
2055 * @param IOBuf the buffer to get the input to
2056 * @param Pos pointer to the current read position, should be NULL initialized!
2057 * @param fd pointer to the filedescriptor to read
2058 * @param timeout number of successless selects until we bail out
2059 * @param selectresolution how long to wait on each select
2060 * @param Error strerror() on error
2061 * @returns numbers of chars read
2063 int StrBufTCP_read_buffered_line_fast(StrBuf *Line,
2068 int selectresolution,
2071 const char *pche = NULL;
2072 const char *pos = NULL;
2074 int nSuccessLess = 0;
2076 const char *pch = NULL;
2081 if ((Line == NULL) ||
2088 *Error = ErrRBLF_PreConditionFailed;
2093 if ((IOBuf->BufUsed > 0) &&
2095 (pos < IOBuf->buf + IOBuf->BufUsed))
2097 pche = IOBuf->buf + IOBuf->BufUsed;
2099 while ((pch < pche) && (*pch != '\n'))
2101 if ((pch >= pche) || (*pch == '\0'))
2103 if ((pch != NULL) &&
2108 if (len > 0 && (*(pch - 1) == '\r') )
2110 StrBufSub(Line, IOBuf, (pos - IOBuf->buf), len - rlen);
2120 StrBufCutLeft(IOBuf, (pos - IOBuf->buf));
2124 if (IOBuf->BufSize - IOBuf->BufUsed < 10) {
2125 IncreaseBuf(IOBuf, 1, -1);
2129 fdflags = fcntl(*fd, F_GETFL);
2130 IsNonBlock = (fdflags & O_NONBLOCK) == O_NONBLOCK;
2133 while ((nSuccessLess < timeout) &&
2143 if (select((*fd) + 1, &rfds, NULL, NULL, &tv) == -1) {
2144 *Error = strerror(errno);
2148 *Error = ErrRBLF_SelectFailed;
2151 if (! FD_ISSET(*fd, &rfds) != 0) {
2157 &IOBuf->buf[IOBuf->BufUsed],
2158 IOBuf->BufSize - IOBuf->BufUsed - 1);
2160 *Error = strerror(errno);
2165 else if (rlen > 0) {
2167 IOBuf->BufUsed += rlen;
2168 IOBuf->buf[IOBuf->BufUsed] = '\0';
2169 if (IOBuf->BufUsed + 10 > IOBuf->BufSize) {
2170 IncreaseBuf(IOBuf, 1, -1);
2174 pche = IOBuf->buf + IOBuf->BufUsed;
2176 while ((pch < pche) && (*pch != '\n'))
2178 if ((pch >= pche) || (*pch == '\0'))
2187 if (len > 0 && (*(pch - 1) == '\r') )
2189 StrBufSub(Line, IOBuf, 0, len - rlen);
2190 *Pos = pos + len + 1;
2193 *Error = ErrRBLF_NotEnoughSentFromServer;
2198 static const char *ErrRBLF_BLOBPreConditionFailed="StrBufReadBLOB: Wrong arguments or invalid Filedescriptor";
2200 * @ingroup StrBuf_IO
2201 * @brief Input binary data from socket
2202 * flushes and closes the FD on error
2203 * @param Buf the buffer to get the input to
2204 * @param fd pointer to the filedescriptor to read
2205 * @param append Append to an existing string or replace?
2206 * @param nBytes the maximal number of bytes to read
2207 * @param Error strerror() on error
2208 * @returns numbers of chars read
2210 int StrBufReadBLOB(StrBuf *Buf, int *fd, int append, long nBytes, const char **Error)
2213 int len, rlen, slen;
2221 if ((Buf == NULL) || (*fd == -1))
2223 *Error = ErrRBLF_BLOBPreConditionFailed;
2228 if (Buf->BufUsed + nBytes >= Buf->BufSize)
2229 IncreaseBuf(Buf, 1, Buf->BufUsed + nBytes);
2231 ptr = Buf->buf + Buf->BufUsed;
2233 slen = len = Buf->BufUsed;
2235 fdflags = fcntl(*fd, F_GETFL);
2236 IsNonBlock = (fdflags & O_NONBLOCK) == O_NONBLOCK;
2238 while ((nRead < nBytes) &&
2248 if (select(*fd + 1, &rfds, NULL, NULL, &tv) == -1) {
2249 *Error = strerror(errno);
2253 *Error = ErrRBLF_SelectFailed;
2256 if (! FD_ISSET(*fd, &rfds) != 0) {
2262 if ((rlen = read(*fd,
2264 nBytes - nRead)) == -1) {
2267 *Error = strerror(errno);
2272 Buf->BufUsed += rlen;
2274 Buf->buf[Buf->BufUsed] = '\0';
2278 const char *ErrRBB_BLOBFPreConditionFailed = "StrBufReadBLOBBuffered: to many selects; aborting.";
2279 const char *ErrRBB_too_many_selects = "StrBufReadBLOBBuffered: to many selects; aborting.";
2281 * @ingroup StrBuf_BufferedIO
2282 * @brief Input binary data from socket
2283 * flushes and closes the FD on error
2284 * @param Blob put binary thing here
2285 * @param IOBuf the buffer to get the input to
2286 * @param Pos offset inside of IOBuf
2287 * @param fd pointer to the filedescriptor to read
2288 * @param append Append to an existing string or replace?
2289 * @param nBytes the maximal number of bytes to read
2290 * @param check whether we should search for '000\n' terminators in case of timeouts
2291 * @param Error strerror() on error
2292 * @returns numbers of chars read
2294 int StrBufReadBLOBBuffered(StrBuf *Blob,
2311 int nAlreadyRead = 0;
2319 if ((Blob == NULL) || (*fd == -1) || (IOBuf == NULL) || (Pos == NULL))
2323 *Error = ErrRBB_BLOBFPreConditionFailed;
2329 if (Blob->BufUsed + nBytes >= Blob->BufSize)
2330 IncreaseBuf(Blob, append, Blob->BufUsed + nBytes);
2335 len = pos - IOBuf->buf;
2336 rlen = IOBuf->BufUsed - len;
2339 if ((IOBuf->BufUsed > 0) &&
2341 (pos < IOBuf->buf + IOBuf->BufUsed))
2343 pche = IOBuf->buf + IOBuf->BufUsed;
2346 if (rlen < nBytes) {
2347 memcpy(Blob->buf + Blob->BufUsed, pos, rlen);
2348 Blob->BufUsed += rlen;
2349 Blob->buf[Blob->BufUsed] = '\0';
2350 nAlreadyRead = nRead = rlen;
2353 if (rlen >= nBytes) {
2354 memcpy(Blob->buf + Blob->BufUsed, pos, nBytes);
2355 Blob->BufUsed += nBytes;
2356 Blob->buf[Blob->BufUsed] = '\0';
2357 if (rlen == nBytes) {
2369 if (IOBuf->BufSize < nBytes - nRead)
2370 IncreaseBuf(IOBuf, 0, nBytes - nRead);
2373 slen = len = Blob->BufUsed;
2375 fdflags = fcntl(*fd, F_GETFL);
2376 IsNonBlock = (fdflags & O_NONBLOCK) == O_NONBLOCK;
2381 while ((nRead < nBytes) &&
2390 if (select(*fd + 1, &rfds, NULL, NULL, &tv) == -1) {
2391 *Error = strerror(errno);
2395 *Error = ErrRBLF_SelectFailed;
2398 if (! FD_ISSET(*fd, &rfds) != 0) {
2410 *Error = strerror(errno);
2413 else if (rlen == 0){
2415 if ((check == NNN_TERM) &&
2417 (strncmp(IOBuf->buf + IOBuf->BufUsed - 5, "\n000\n", 5) == 0))
2419 StrBufPlain(Blob, HKEY("\n000\n"));
2420 StrBufCutRight(Blob, 5);
2421 return Blob->BufUsed;
2423 if (nSelects > 10) {
2425 *Error = ErrRBB_too_many_selects;
2429 else if (rlen > 0) {
2432 IOBuf->BufUsed += rlen;
2435 if (nRead > nBytes) {
2436 *Pos = IOBuf->buf + nBytes;
2438 Blob->buf[Blob->BufUsed] = '\0';
2439 StrBufAppendBufPlain(Blob, IOBuf->buf, nBytes, 0);
2443 return nRead + nAlreadyRead;
2448 * @brief Cut nChars from the start of the string
2449 * @param Buf Buffer to modify
2450 * @param nChars how many chars should be skipped?
2452 void StrBufCutLeft(StrBuf *Buf, int nChars)
2454 if (nChars >= Buf->BufUsed) {
2458 memmove(Buf->buf, Buf->buf + nChars, Buf->BufUsed - nChars);
2459 Buf->BufUsed -= nChars;
2460 Buf->buf[Buf->BufUsed] = '\0';
2465 * @brief Cut the trailing n Chars from the string
2466 * @param Buf Buffer to modify
2467 * @param nChars how many chars should be trunkated?
2469 void StrBufCutRight(StrBuf *Buf, int nChars)
2471 if (nChars >= Buf->BufUsed) {
2475 Buf->BufUsed -= nChars;
2476 Buf->buf[Buf->BufUsed] = '\0';
2481 * @brief Cut the string after n Chars
2482 * @param Buf Buffer to modify
2483 * @param AfternChars after how many chars should we trunkate the string?
2484 * @param At if non-null and points inside of our string, cut it there.
2486 void StrBufCutAt(StrBuf *Buf, int AfternChars, const char *At)
2489 AfternChars = At - Buf->buf;
2492 if ((AfternChars < 0) || (AfternChars >= Buf->BufUsed))
2494 Buf->BufUsed = AfternChars;
2495 Buf->buf[Buf->BufUsed] = '\0';
2501 * @brief Strip leading and trailing spaces from a string; with premeasured and adjusted length.
2502 * @param Buf the string to modify
2504 void StrBufTrim(StrBuf *Buf)
2507 if ((Buf == NULL) || (Buf->BufUsed == 0)) return;
2509 while ((Buf->BufUsed > delta) && (isspace(Buf->buf[delta]))){
2512 if (delta > 0) StrBufCutLeft(Buf, delta);
2514 if (Buf->BufUsed == 0) return;
2515 while (isspace(Buf->buf[Buf->BufUsed - 1])){
2518 Buf->buf[Buf->BufUsed] = '\0';
2523 * @brief uppercase the contents of a buffer
2524 * @param Buf the buffer to translate
2526 void StrBufUpCase(StrBuf *Buf)
2531 pche = pch + Buf->BufUsed;
2532 while (pch < pche) {
2533 *pch = toupper(*pch);
2541 * @brief lowercase the contents of a buffer
2542 * @param Buf the buffer to translate
2544 void StrBufLowerCase(StrBuf *Buf)
2549 pche = pch + Buf->BufUsed;
2550 while (pch < pche) {
2551 *pch = tolower(*pch);
2558 * @brief removes double slashes from pathnames
2559 * @param Dir directory string to filter
2560 * @param RemoveTrailingSlash allows / disallows trailing slashes
2562 void StrBufStripSlashes(StrBuf *Dir, int RemoveTrailingSlash)
2568 while (!IsEmptyStr(a)) {
2580 if ((RemoveTrailingSlash) && (*(b - 1) != '/')){
2585 Dir->BufUsed = b - Dir->buf;
2589 * @ingroup StrBuf_DeEnCoder
2590 * @brief unhide special chars hidden to the HTML escaper
2591 * @param target buffer to put the unescaped string in
2592 * @param source buffer to unescape
2594 void StrBufEUid_unescapize(StrBuf *target, const StrBuf *source)
2600 FlushStrBuf(target);
2602 if (source == NULL ||target == NULL)
2607 len = source->BufUsed;
2608 for (a = 0; a < len; ++a) {
2609 if (target->BufUsed >= target->BufSize)
2610 IncreaseBuf(target, 1, -1);
2612 if (source->buf[a] == '=') {
2613 hex[0] = source->buf[a + 1];
2614 hex[1] = source->buf[a + 2];
2617 sscanf(hex, "%02x", &b);
2618 target->buf[target->BufUsed] = b;
2619 target->buf[++target->BufUsed] = 0;
2623 target->buf[target->BufUsed] = source->buf[a];
2624 target->buf[++target->BufUsed] = 0;
2631 * @ingroup StrBuf_DeEnCoder
2632 * @brief hide special chars from the HTML escapers and friends
2633 * @param target buffer to put the escaped string in
2634 * @param source buffer to escape
2636 void StrBufEUid_escapize(StrBuf *target, const StrBuf *source)
2641 FlushStrBuf(target);
2643 if (source == NULL ||target == NULL)
2648 len = source->BufUsed;
2649 for (i=0; i<len; ++i) {
2650 if (target->BufUsed + 4 >= target->BufSize)
2651 IncreaseBuf(target, 1, -1);
2652 if ( (isalnum(source->buf[i])) ||
2653 (source->buf[i]=='-') ||
2654 (source->buf[i]=='_') ) {
2655 target->buf[target->BufUsed++] = source->buf[i];
2658 sprintf(&target->buf[target->BufUsed],
2660 (0xFF &source->buf[i]));
2661 target->BufUsed += 3;
2664 target->buf[target->BufUsed + 1] = '\0';
2668 #define DEF_MEM_LEVEL 8 /*< memlevel??? */
2669 #define OS_CODE 0x03 /*< unix */
2672 * @ingroup StrBuf_DeEnCoder
2673 * @brief uses the same calling syntax as compress2(), but it
2674 * creates a stream compatible with HTTP "Content-encoding: gzip"
2675 * @param dest compressed buffer
2676 * @param destLen length of the compresed data
2677 * @param source source to encode
2678 * @param sourceLen length of source to encode
2679 * @param level compression level
2681 int ZEXPORT compress_gzip(Bytef * dest,
2683 const Bytef * source,
2687 const int gz_magic[2] = { 0x1f, 0x8b }; /* gzip magic header */
2689 /* write gzip header */
2690 snprintf((char *) dest, *destLen,
2691 "%c%c%c%c%c%c%c%c%c%c",
2692 gz_magic[0], gz_magic[1], Z_DEFLATED,
2693 0 /*flags */ , 0, 0, 0, 0 /*time */ , 0 /* xflags */ ,
2696 /* normal deflate */
2699 stream.next_in = (Bytef *) source;
2700 stream.avail_in = (uInt) sourceLen;
2701 stream.next_out = dest + 10L; // after header
2702 stream.avail_out = (uInt) * destLen;
2703 if ((uLong) stream.avail_out != *destLen)
2706 stream.zalloc = (alloc_func) 0;
2707 stream.zfree = (free_func) 0;
2708 stream.opaque = (voidpf) 0;
2710 err = deflateInit2(&stream, level, Z_DEFLATED, -MAX_WBITS,
2711 DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
2715 err = deflate(&stream, Z_FINISH);
2716 if (err != Z_STREAM_END) {
2717 deflateEnd(&stream);
2718 return err == Z_OK ? Z_BUF_ERROR : err;
2720 *destLen = stream.total_out + 10L;
2722 /* write CRC and Length */
2723 uLong crc = crc32(0L, source, sourceLen);
2725 for (n = 0; n < 4; ++n, ++*destLen) {
2726 dest[*destLen] = (int) (crc & 0xff);
2729 uLong len = stream.total_in;
2730 for (n = 0; n < 4; ++n, ++*destLen) {
2731 dest[*destLen] = (int) (len & 0xff);
2734 err = deflateEnd(&stream);
2741 * @ingroup StrBuf_DeEnCoder
2742 * @brief compress the buffer with gzip
2743 * Attention! If you feed this a Const String, you must maintain the uncompressed buffer yourself!
2744 * @param Buf buffer whose content is to be gzipped
2746 int CompressBuffer(StrBuf *Buf)
2749 char *compressed_data = NULL;
2750 size_t compressed_len, bufsize;
2753 bufsize = compressed_len = Buf->BufUsed + (Buf->BufUsed / 100) + 100;
2754 compressed_data = malloc(compressed_len);
2756 if (compressed_data == NULL)
2758 /* Flush some space after the used payload so valgrind shuts up... */
2759 while ((i < 10) && (Buf->BufUsed + i < Buf->BufSize))
2760 Buf->buf[Buf->BufUsed + i++] = '\0';
2761 if (compress_gzip((Bytef *) compressed_data,
2764 (uLongf) Buf->BufUsed, Z_BEST_SPEED) == Z_OK) {
2767 Buf->buf = compressed_data;
2768 Buf->BufUsed = compressed_len;
2769 Buf->BufSize = bufsize;
2770 /* Flush some space after the used payload so valgrind shuts up... */
2772 while ((i < 10) && (Buf->BufUsed + i < Buf->BufSize))
2773 Buf->buf[Buf->BufUsed + i++] = '\0';
2776 free(compressed_data);
2778 #endif /* HAVE_ZLIB */
2783 * @ingroup StrBuf_DeEnCoder
2784 * @brief decode a buffer from base 64 encoding; destroys original
2785 * @param Buf Buffor to transform
2787 int StrBufDecodeBase64(StrBuf *Buf)
2791 if (Buf == NULL) return -1;
2793 xferbuf = (char*) malloc(Buf->BufSize);
2794 siz = CtdlDecodeBase64(xferbuf,
2804 * @ingroup StrBuf_DeEnCoder
2805 * @brief decode a buffer from base 64 encoding; destroys original
2806 * @param Buf Buffor to transform
2808 int StrBufDecodeHex(StrBuf *Buf)
2811 char *pch, *pche, *pchi;
2813 if (Buf == NULL) return -1;
2815 pch = pchi = Buf->buf;
2816 pche = pch + Buf->BufUsed;
2818 while (pchi < pche){
2819 ch = decode_hex(pchi);
2826 Buf->BufUsed = pch - Buf->buf;
2827 return Buf->BufUsed;
2831 * @ingroup StrBuf_DeEnCoder
2832 * @brief replace all chars >0x20 && < 0x7F with Mute
2833 * @param Mute char to put over invalid chars
2834 * @param Buf Buffor to transform
2836 int StrBufSanitizeAscii(StrBuf *Buf, const char Mute)
2840 if (Buf == NULL) return -1;
2841 pch = (unsigned char *)Buf->buf;
2842 while (pch < (unsigned char *)Buf->buf + Buf->BufUsed) {
2843 if ((*pch < 0x20) || (*pch > 0x7F))
2847 return Buf->BufUsed;
2852 * @ingroup StrBuf_DeEnCoder
2853 * @brief remove escaped strings from i.e. the url string (like %20 for blanks)
2854 * @param Buf Buffer to translate
2855 * @param StripBlanks Reduce several blanks to one?
2857 long StrBufUnescape(StrBuf *Buf, int StripBlanks)
2863 while ((Buf->BufUsed > 0) && (isspace(Buf->buf[Buf->BufUsed - 1]))){
2864 Buf->buf[Buf->BufUsed - 1] = '\0';
2869 while (a < Buf->BufUsed) {
2870 if (Buf->buf[a] == '+')
2872 else if (Buf->buf[a] == '%') {
2873 /* don't let % chars through, rather truncate the input. */
2874 if (a + 2 > Buf->BufUsed) {
2879 hex[0] = Buf->buf[a + 1];
2880 hex[1] = Buf->buf[a + 2];
2883 sscanf(hex, "%02x", &b);
2884 Buf->buf[a] = (char) b;
2885 len = Buf->BufUsed - a - 2;
2887 memmove(&Buf->buf[a + 1], &Buf->buf[a + 3], len);
2899 * @ingroup StrBuf_DeEnCoder
2900 * @brief RFC2047-encode a header field if necessary.
2901 * If no non-ASCII characters are found, the string
2902 * will be copied verbatim without encoding.
2904 * @param target Target buffer.
2905 * @param source Source string to be encoded.
2906 * @returns encoded length; -1 if non success.
2908 int StrBufRFC2047encode(StrBuf **target, const StrBuf *source)
2910 const char headerStr[] = "=?UTF-8?Q?";
2911 int need_to_encode = 0;
2915 if ((source == NULL) ||
2919 while ((i < source->BufUsed) &&
2920 (!IsEmptyStr (&source->buf[i])) &&
2921 (need_to_encode == 0)) {
2922 if (((unsigned char) source->buf[i] < 32) ||
2923 ((unsigned char) source->buf[i] > 126)) {
2929 if (!need_to_encode) {
2930 if (*target == NULL) {
2931 *target = NewStrBufPlain(source->buf, source->BufUsed);
2934 FlushStrBuf(*target);
2935 StrBufAppendBuf(*target, source, 0);
2937 return (*target)->BufUsed;
2939 if (*target == NULL)
2940 *target = NewStrBufPlain(NULL, sizeof(headerStr) + source->BufUsed * 2);
2941 else if (sizeof(headerStr) + source->BufUsed >= (*target)->BufSize)
2942 IncreaseBuf(*target, sizeof(headerStr) + source->BufUsed, 0);
2943 memcpy ((*target)->buf, headerStr, sizeof(headerStr) - 1);
2944 (*target)->BufUsed = sizeof(headerStr) - 1;
2945 for (i=0; (i < source->BufUsed); ++i) {
2946 if ((*target)->BufUsed + 4 >= (*target)->BufSize)
2947 IncreaseBuf(*target, 1, 0);
2948 ch = (unsigned char) source->buf[i];
2949 if ((ch < 32) || (ch > 126) || (ch == 61)) {
2950 sprintf(&(*target)->buf[(*target)->BufUsed], "=%02X", ch);
2951 (*target)->BufUsed += 3;
2954 (*target)->buf[(*target)->BufUsed] = ch;
2955 (*target)->BufUsed++;
2959 if ((*target)->BufUsed + 4 >= (*target)->BufSize)
2960 IncreaseBuf(*target, 1, 0);
2962 (*target)->buf[(*target)->BufUsed++] = '?';
2963 (*target)->buf[(*target)->BufUsed++] = '=';
2964 (*target)->buf[(*target)->BufUsed] = '\0';
2965 return (*target)->BufUsed;;
2970 * @brief replaces all occurances of 'search' by 'replace'
2971 * @param buf Buffer to modify
2972 * @param search character to search
2973 * @param replace character to replace search by
2975 void StrBufReplaceChars(StrBuf *buf, char search, char replace)
2980 for (i=0; i<buf->BufUsed; i++)
2981 if (buf->buf[i] == search)
2982 buf->buf[i] = replace;
2989 * @ingroup StrBuf_DeEnCoder
2990 * @brief Wrapper around iconv_open()
2991 * Our version adds aliases for non-standard Microsoft charsets
2992 * such as 'MS950', aliasing them to names like 'CP950'
2994 * @param tocode Target encoding
2995 * @param fromcode Source encoding
2996 * @param pic anonimized pointer to iconv struct
2998 void ctdl_iconv_open(const char *tocode, const char *fromcode, void *pic)
3001 iconv_t ic = (iconv_t)(-1) ;
3002 ic = iconv_open(tocode, fromcode);
3003 if (ic == (iconv_t)(-1) ) {
3004 char alias_fromcode[64];
3005 if ( (strlen(fromcode) == 5) && (!strncasecmp(fromcode, "MS", 2)) ) {
3006 safestrncpy(alias_fromcode, fromcode, sizeof alias_fromcode);
3007 alias_fromcode[0] = 'C';
3008 alias_fromcode[1] = 'P';
3009 ic = iconv_open(tocode, alias_fromcode);
3012 *(iconv_t *)pic = ic;
3018 * @ingroup StrBuf_DeEnCoder
3019 * @brief find one chunk of a RFC822 encoded string
3020 * @param Buffer where to search
3021 * @param bptr where to start searching
3022 * @returns found position, NULL if none.
3024 static inline char *FindNextEnd (const StrBuf *Buf, char *bptr)
3027 /* Find the next ?Q? */
3028 if (Buf->BufUsed - (bptr - Buf->buf) < 6)
3031 end = strchr(bptr + 2, '?');
3036 if ((Buf->BufUsed - (end - Buf->buf) > 3) &&
3037 ((*(end + 1) == 'B') || (*(end + 1) == 'Q')) &&
3038 (*(end + 2) == '?')) {
3039 /* skip on to the end of the cluster, the next ?= */
3040 end = strstr(end + 3, "?=");
3043 /* sort of half valid encoding, try to find an end. */
3044 end = strstr(bptr, "?=");
3050 * @brief swaps the contents of two StrBufs
3051 * this is to be used to have cheap switched between a work-buffer and a target buffer
3052 * @param A First one
3053 * @param B second one
3055 static inline void SwapBuffers(StrBuf *A, StrBuf *B)
3059 memcpy(&C, A, sizeof(*A));
3060 memcpy(A, B, sizeof(*B));
3061 memcpy(B, &C, sizeof(C));
3067 * @ingroup StrBuf_DeEnCoder
3068 * @brief convert one buffer according to the preselected iconv pointer PIC
3069 * @param ConvertBuf buffer we need to translate
3070 * @param TmpBuf To share a workbuffer over several iterations. prepare to have it filled with useless stuff afterwards.
3071 * @param pic Pointer to the iconv-session Object
3073 void StrBufConvert(StrBuf *ConvertBuf, StrBuf *TmpBuf, void *pic)
3079 char *ibuf; /**< Buffer of characters to be converted */
3080 char *obuf; /**< Buffer for converted characters */
3081 size_t ibuflen; /**< Length of input buffer */
3082 size_t obuflen; /**< Length of output buffer */
3085 /* since we're converting to utf-8, one glyph may take up to 6 bytes */
3086 if (ConvertBuf->BufUsed * 6 >= TmpBuf->BufSize)
3087 IncreaseBuf(TmpBuf, 0, ConvertBuf->BufUsed * 6);
3089 ic = *(iconv_t*)pic;
3090 ibuf = ConvertBuf->buf;
3091 ibuflen = ConvertBuf->BufUsed;
3093 obuflen = TmpBuf->BufSize;
3095 siz = iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
3098 if (errno == E2BIG) {
3100 IncreaseBuf(TmpBuf, 0, 0);
3105 else if (errno == EILSEQ){
3106 /* hm, invalid utf8 sequence... what to do now? */
3107 /* An invalid multibyte sequence has been encountered in the input */
3109 else if (errno == EINVAL) {
3110 /* An incomplete multibyte sequence has been encountered in the input. */
3113 FlushStrBuf(TmpBuf);
3116 TmpBuf->BufUsed = TmpBuf->BufSize - obuflen;
3117 TmpBuf->buf[TmpBuf->BufUsed] = '\0';
3119 /* little card game: wheres the red lady? */
3120 SwapBuffers(ConvertBuf, TmpBuf);
3121 FlushStrBuf(TmpBuf);
3128 * @ingroup StrBuf_DeEnCoder
3129 * @brief catches one RFC822 encoded segment, and decodes it.
3130 * @param Target buffer to fill with result
3131 * @param DecodeMe buffer with stuff to process
3132 * @param SegmentStart points to our current segment in DecodeMe
3133 * @param SegmentEnd Points to the end of our current segment in DecodeMe
3134 * @param ConvertBuf Workbuffer shared between several iterations. Random content; needs to be valid
3135 * @param ConvertBuf2 Workbuffer shared between several iterations. Random content; needs to be valid
3136 * @param FoundCharset Characterset to default decoding to; if we find another we will overwrite it.
3138 inline static void DecodeSegment(StrBuf *Target,
3139 const StrBuf *DecodeMe,
3143 StrBuf *ConvertBuf2,
3144 StrBuf *FoundCharset)
3150 iconv_t ic = (iconv_t)(-1);
3154 /* Now we handle foreign character sets properly encoded
3155 * in RFC2047 format.
3157 StaticBuf.buf = SegmentStart;
3158 StaticBuf.BufUsed = SegmentEnd - SegmentStart;
3159 StaticBuf.BufSize = DecodeMe->BufSize - (SegmentStart - DecodeMe->buf);
3160 extract_token(charset, SegmentStart, 1, '?', sizeof charset);
3161 if (FoundCharset != NULL) {
3162 FlushStrBuf(FoundCharset);
3163 StrBufAppendBufPlain(FoundCharset, charset, -1, 0);
3165 extract_token(encoding, SegmentStart, 2, '?', sizeof encoding);
3166 StrBufExtract_token(ConvertBuf, &StaticBuf, 3, '?');
3168 *encoding = toupper(*encoding);
3169 if (*encoding == 'B') { /**< base64 */
3170 ConvertBuf2->BufUsed = CtdlDecodeBase64(ConvertBuf2->buf,
3172 ConvertBuf->BufUsed);
3174 else if (*encoding == 'Q') { /**< quoted-printable */
3178 while (pos < ConvertBuf->BufUsed)
3180 if (ConvertBuf->buf[pos] == '_')
3181 ConvertBuf->buf[pos] = ' ';
3185 ConvertBuf2->BufUsed = CtdlDecodeQuotedPrintable(
3188 ConvertBuf->BufUsed);
3191 StrBufAppendBuf(ConvertBuf2, ConvertBuf, 0);
3194 ctdl_iconv_open("UTF-8", charset, &ic);
3195 if (ic != (iconv_t)(-1) ) {
3197 StrBufConvert(ConvertBuf2, ConvertBuf, &ic);
3198 StrBufAppendBuf(Target, ConvertBuf2, 0);
3203 StrBufAppendBufPlain(Target, HKEY("(unreadable)"), 0);
3209 * @ingroup StrBuf_DeEnCoder
3210 * @brief Handle subjects with RFC2047 encoding such as:
3211 * =?koi8-r?B?78bP0s3Mxc7JxSDXz9rE1dvO2c3JINvB0sHNySDP?=
3212 * @param Target where to put the decoded string to
3213 * @param DecodeMe buffer with encoded string
3214 * @param DefaultCharset if we don't find one, which should we use?
3215 * @param FoundCharset overrides DefaultCharset if non-empty; If we find a charset inside of the string,
3216 * put it here for later use where no string might be known.
3218 void StrBuf_RFC822_to_Utf8(StrBuf *Target, const StrBuf *DecodeMe, const StrBuf* DefaultCharset, StrBuf *FoundCharset)
3220 StrBuf *DecodedInvalidBuf = NULL;
3221 StrBuf *ConvertBuf, *ConvertBuf2;
3222 const StrBuf *DecodeMee = DecodeMe;
3223 char *start, *end, *next, *nextend, *ptr = NULL;
3225 iconv_t ic = (iconv_t)(-1) ;
3230 int illegal_non_rfc2047_encoding = 0;
3232 /* Sometimes, badly formed messages contain strings which were simply
3233 * written out directly in some foreign character set instead of
3234 * using RFC2047 encoding. This is illegal but we will attempt to
3235 * handle it anyway by converting from a user-specified default
3236 * charset to UTF-8 if we see any nonprintable characters.
3239 len = StrLength(DecodeMe);
3240 for (i=0; i<DecodeMe->BufUsed; ++i) {
3241 if ((DecodeMe->buf[i] < 32) || (DecodeMe->buf[i] > 126)) {
3242 illegal_non_rfc2047_encoding = 1;
3247 ConvertBuf = NewStrBufPlain(NULL, StrLength(DecodeMe));
3248 if ((illegal_non_rfc2047_encoding) &&
3249 (strcasecmp(ChrPtr(DefaultCharset), "UTF-8")) &&
3250 (strcasecmp(ChrPtr(DefaultCharset), "us-ascii")) )
3253 ctdl_iconv_open("UTF-8", ChrPtr(DefaultCharset), &ic);
3254 if (ic != (iconv_t)(-1) ) {
3255 DecodedInvalidBuf = NewStrBufDup(DecodeMe);
3256 StrBufConvert(DecodedInvalidBuf, ConvertBuf, &ic);///TODO: don't void const?
3257 DecodeMee = DecodedInvalidBuf;
3263 /* pre evaluate the first pair */
3264 nextend = end = NULL;
3265 len = StrLength(DecodeMee);
3266 start = strstr(DecodeMee->buf, "=?");
3267 eptr = DecodeMee->buf + DecodeMee->BufUsed;
3269 end = FindNextEnd (DecodeMee, start);
3271 StrBufAppendBuf(Target, DecodeMee, 0);
3272 FreeStrBuf(&ConvertBuf);
3273 FreeStrBuf(&DecodedInvalidBuf);
3277 ConvertBuf2 = NewStrBufPlain(NULL, StrLength(DecodeMee));
3279 if (start != DecodeMee->buf) {
3282 nFront = start - DecodeMee->buf;
3283 StrBufAppendBufPlain(Target, DecodeMee->buf, nFront, 0);
3287 * Since spammers will go to all sorts of absurd lengths to get their
3288 * messages through, there are LOTS of corrupt headers out there.
3289 * So, prevent a really badly formed RFC2047 header from throwing
3290 * this function into an infinite loop.
3292 while ((start != NULL) &&
3299 DecodeSegment(Target,
3307 next = strstr(end, "=?");
3309 if ((next != NULL) &&
3311 nextend = FindNextEnd(DecodeMee, next);
3312 if (nextend == NULL)
3315 /* did we find two partitions */
3316 if ((next != NULL) &&
3320 while ((ptr < next) &&
3326 /* did we find a gab just filled with blanks? */
3329 long gap = next - start;
3334 /* now terminate the gab at the end */
3335 delta = (next - end) - 2; ////TODO: const!
3336 ((StrBuf*)DecodeMee)->BufUsed -= delta;
3337 ((StrBuf*)DecodeMee)->buf[DecodeMee->BufUsed] = '\0';
3339 /* move next to its new location. */
3344 /* our next-pair is our new first pair now. */
3350 nextend = DecodeMee->buf + DecodeMee->BufUsed;
3351 if ((end != NULL) && (end < nextend)) {
3353 while ( (ptr < nextend) &&
3360 StrBufAppendBufPlain(Target, end, nextend - end, 0);
3362 FreeStrBuf(&ConvertBuf);
3363 FreeStrBuf(&ConvertBuf2);
3364 FreeStrBuf(&DecodedInvalidBuf);
3369 * @brief evaluate the length of an utf8 special character sequence
3370 * @param Char the character to examine
3371 * @returns width of utf8 chars in bytes
3373 static inline int Ctdl_GetUtf8SequenceLength(const char *CharS, const char *CharE)
3378 while ((n < 8) && ((test & *CharS) != 0)) {
3382 if ((n > 6) || ((CharE - CharS) < n))
3389 * @brief detect whether this char starts an utf-8 encoded char
3390 * @param Char character to inspect
3391 * @returns yes or no
3393 static inline int Ctdl_IsUtf8SequenceStart(const char Char)
3395 /** 11??.???? indicates an UTF8 Sequence. */
3396 return ((Char & 0xC0) != 0);
3401 * @brief measure the number of glyphs in an UTF8 string...
3402 * @param Buf string to measure
3403 * @returns the number of glyphs in Buf
3405 long StrBuf_Utf8StrLen(StrBuf *Buf)
3411 if ((Buf == NULL) || (Buf->BufUsed == 0))
3414 eptr = Buf->buf + Buf->BufUsed;
3415 while ((aptr < eptr) && (*aptr != '\0')) {
3416 if (Ctdl_IsUtf8SequenceStart(*aptr)){
3417 m = Ctdl_GetUtf8SequenceLength(aptr, eptr);
3418 while ((aptr < eptr) && (*aptr++ != '\0')&& (m-- > 0) );
3431 * @brief cuts a string after maxlen glyphs
3432 * @param Buf string to cut to maxlen glyphs
3433 * @param maxlen how long may the string become?
3434 * @returns current length of the string
3436 long StrBuf_Utf8StrCut(StrBuf *Buf, int maxlen)
3442 eptr = Buf->buf + Buf->BufUsed;
3443 while ((aptr < eptr) && (*aptr != '\0')) {
3444 if (Ctdl_IsUtf8SequenceStart(*aptr)){
3445 m = Ctdl_GetUtf8SequenceLength(aptr, eptr);
3446 while ((*aptr++ != '\0') && (m-- > 0));
3455 Buf->BufUsed = aptr - Buf->buf;
3456 return Buf->BufUsed;
3459 return Buf->BufUsed;
3466 * @brief extract a "next line" from Buf; Ptr to persist across several iterations
3467 * @param LineBuf your line will be copied here.
3468 * @param Buf BLOB with lines of text...
3469 * @param Ptr moved arround to keep the next-line across several iterations
3470 * has to be &NULL on start; will be &NotNULL on end of buffer
3471 * @returns size of copied buffer
3473 int StrBufSipLine(StrBuf *LineBuf, StrBuf *Buf, const char **Ptr)
3475 const char *aptr, *ptr, *eptr;
3478 if ((Buf == NULL) || (*Ptr == StrBufNOTNULL)) {
3479 *Ptr = StrBufNOTNULL;
3483 FlushStrBuf(LineBuf);
3485 ptr = aptr = Buf->buf;
3489 optr = LineBuf->buf;
3490 eptr = Buf->buf + Buf->BufUsed;
3491 xptr = LineBuf->buf + LineBuf->BufSize - 1;
3493 while ((ptr <= eptr) &&
3500 LineBuf->BufUsed = optr - LineBuf->buf;
3501 IncreaseBuf(LineBuf, 1, LineBuf->BufUsed + 1);
3502 optr = LineBuf->buf + LineBuf->BufUsed;
3503 xptr = LineBuf->buf + LineBuf->BufSize - 1;
3507 if ((ptr >= eptr) && (optr > LineBuf->buf))
3509 LineBuf->BufUsed = optr - LineBuf->buf;
3511 if ((ptr <= eptr) && (*ptr == '\r'))
3513 if ((ptr <= eptr) && (*ptr == '\n'))
3520 *Ptr = StrBufNOTNULL;
3523 return Buf->BufUsed - (ptr - Buf->buf);