8 #include <sys/select.h>
10 #define SHOW_ME_VAPPEND_PRINTF
12 #include "libcitadel.h"
25 int ZEXPORT compress_gzip(Bytef * dest, size_t * destLen,
26 const Bytef * source, uLong sourceLen, int level);
30 * Private Structure for the Stringbuffer
33 char *buf; /**< the pointer to the dynamic buffer */
34 long BufSize; /**< how many spcae do we optain */
35 long BufUsed; /**< StNumber of Chars used excluding the trailing \0 */
36 int ConstBuf; /**< are we just a wrapper arround a static buffer and musn't we be changed? */
41 * \Brief Cast operator to Plain String
42 * Note: if the buffer is altered by StrBuf operations, this pointer may become
43 * invalid. So don't lean on it after altering the buffer!
44 * Since this operation is considered cheap, rather call it often than risking
45 * your pointer to become invalid!
46 * \param Str the string we want to get the c-string representation for
47 * \returns the Pointer to the Content. Don't mess with it!
49 inline const char *ChrPtr(const StrBuf *Str)
57 * \brief since we know strlen()'s result, provide it here.
58 * \param Str the string to return the length to
59 * \returns contentlength of the buffer
61 inline int StrLength(const StrBuf *Str)
63 return (Str != NULL) ? Str->BufUsed : 0;
67 * \brief local utility function to resize the buffer
68 * \param Buf the buffer whichs storage we should increase
69 * \param KeepOriginal should we copy the original buffer or just start over with a new one
70 * \param DestSize what should fit in after?
72 static int IncreaseBuf(StrBuf *Buf, int KeepOriginal, int DestSize)
75 size_t NewSize = Buf->BufSize * 2;
81 while (NewSize <= DestSize)
84 NewBuf= (char*) malloc(NewSize);
85 if (KeepOriginal && (Buf->BufUsed > 0))
87 memcpy(NewBuf, Buf->buf, Buf->BufUsed);
101 * Allocate a new buffer with default buffer size
102 * \returns the new stringbuffer
104 StrBuf* NewStrBuf(void)
108 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
109 NewBuf->buf = (char*) malloc(SIZ);
110 NewBuf->buf[0] = '\0';
111 NewBuf->BufSize = SIZ;
113 NewBuf->ConstBuf = 0;
118 * \brief Copy Constructor; returns a duplicate of CopyMe
119 * \params CopyMe Buffer to faxmilate
120 * \returns the new stringbuffer
122 StrBuf* NewStrBufDup(const StrBuf *CopyMe)
129 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
130 NewBuf->buf = (char*) malloc(CopyMe->BufSize);
131 memcpy(NewBuf->buf, CopyMe->buf, CopyMe->BufUsed + 1);
132 NewBuf->BufUsed = CopyMe->BufUsed;
133 NewBuf->BufSize = CopyMe->BufSize;
134 NewBuf->ConstBuf = 0;
139 * \brief create a new Buffer using an existing c-string
140 * this function should also be used if you want to pre-suggest
141 * the buffer size to allocate in conjunction with ptr == NULL
142 * \param ptr the c-string to copy; may be NULL to create a blank instance
143 * \param nChars How many chars should we copy; -1 if we should measure the length ourselves
144 * \returns the new stringbuffer
146 StrBuf* NewStrBufPlain(const char* ptr, int nChars)
152 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
154 CopySize = strlen((ptr != NULL)?ptr:"");
158 while (Siz <= CopySize)
161 NewBuf->buf = (char*) malloc(Siz);
162 NewBuf->BufSize = Siz;
164 memcpy(NewBuf->buf, ptr, CopySize);
165 NewBuf->buf[CopySize] = '\0';
166 NewBuf->BufUsed = CopySize;
169 NewBuf->buf[0] = '\0';
172 NewBuf->ConstBuf = 0;
177 * \brief Set an existing buffer from a c-string
178 * \param ptr c-string to put into
179 * \param nChars set to -1 if we should work 0-terminated
180 * \returns the new length of the string
182 int StrBufPlain(StrBuf *Buf, const char* ptr, int nChars)
184 size_t Siz = Buf->BufSize;
188 CopySize = strlen(ptr);
192 while (Siz <= CopySize)
195 if (Siz != Buf->BufSize)
196 IncreaseBuf(Buf, 0, Siz);
197 memcpy(Buf->buf, ptr, CopySize);
198 Buf->buf[CopySize] = '\0';
199 Buf->BufUsed = CopySize;
206 * \brief use strbuf as wrapper for a string constant for easy handling
207 * \param StringConstant a string to wrap
208 * \param SizeOfConstant should be sizeof(StringConstant)-1
210 StrBuf* _NewConstStrBuf(const char* StringConstant, size_t SizeOfStrConstant)
214 NewBuf = (StrBuf*) malloc(sizeof(StrBuf));
215 NewBuf->buf = (char*) StringConstant;
216 NewBuf->BufSize = SizeOfStrConstant;
217 NewBuf->BufUsed = SizeOfStrConstant;
218 NewBuf->ConstBuf = 1;
224 * \brief flush the content of a Buf; keep its struct
225 * \param buf Buffer to flush
227 int FlushStrBuf(StrBuf *buf)
239 * \brief Release a Buffer
240 * Its a double pointer, so it can NULL your pointer
241 * so fancy SIG11 appear instead of random results
242 * \param FreeMe Pointer Pointer to the buffer to free
244 void FreeStrBuf (StrBuf **FreeMe)
248 if (!(*FreeMe)->ConstBuf)
249 free((*FreeMe)->buf);
255 * \brief Release the buffer
256 * If you want put your StrBuf into a Hash, use this as Destructor.
257 * \param VFreeMe untyped pointer to a StrBuf. be shure to do the right thing [TM]
259 void HFreeStrBuf (void *VFreeMe)
261 StrBuf *FreeMe = (StrBuf*)VFreeMe;
264 if (!FreeMe->ConstBuf)
270 * \brief Wrapper around atol
272 long StrTol(const StrBuf *Buf)
277 return atol(Buf->buf);
283 * \brief Wrapper around atoi
285 int StrToi(const StrBuf *Buf)
289 if (Buf->BufUsed > 0)
290 return atoi(Buf->buf);
295 * \brief Checks to see if the string is a pure number
297 int StrBufIsNumber(const StrBuf *Buf) {
302 strtoll(Buf->buf, &pEnd, 10);
303 if (pEnd == NULL && ((Buf->buf)-pEnd) != 0) {
309 * \brief modifies a Single char of the Buf
310 * You can point to it via char* or a zero-based integer
311 * \param ptr char* to zero; use NULL if unused
312 * \param nThChar zero based pointer into the string; use -1 if unused
313 * \param PeekValue The Character to place into the position
315 long StrBufPeek(StrBuf *Buf, const char* ptr, long nThChar, char PeekValue)
320 nThChar = ptr - Buf->buf;
321 if ((nThChar < 0) || (nThChar > Buf->BufUsed))
323 Buf->buf[nThChar] = PeekValue;
328 * \brief Append a StringBuffer to the buffer
329 * \param Buf Buffer to modify
330 * \param AppendBuf Buffer to copy at the end of our buffer
331 * \param Offset Should we start copying from an offset?
333 void StrBufAppendBuf(StrBuf *Buf, const StrBuf *AppendBuf, unsigned long Offset)
335 if ((AppendBuf == NULL) || (Buf == NULL) || (AppendBuf->buf == NULL))
338 if (Buf->BufSize - Offset < AppendBuf->BufUsed + Buf->BufUsed)
341 AppendBuf->BufUsed + Buf->BufUsed);
343 memcpy(Buf->buf + Buf->BufUsed,
344 AppendBuf->buf + Offset,
345 AppendBuf->BufUsed - Offset);
346 Buf->BufUsed += AppendBuf->BufUsed - Offset;
347 Buf->buf[Buf->BufUsed] = '\0';
352 * \brief Append a C-String to the buffer
353 * \param Buf Buffer to modify
354 * \param AppendBuf Buffer to copy at the end of our buffer
355 * \param AppendSize number of bytes to copy; set to -1 if we should count it in advance
356 * \param Offset Should we start copying from an offset?
358 void StrBufAppendBufPlain(StrBuf *Buf, const char *AppendBuf, long AppendSize, unsigned long Offset)
361 long BufSizeRequired;
363 if ((AppendBuf == NULL) || (Buf == NULL))
367 aps = strlen(AppendBuf + Offset);
369 aps = AppendSize - Offset;
371 BufSizeRequired = Buf->BufUsed + aps + 1;
372 if (Buf->BufSize <= BufSizeRequired)
373 IncreaseBuf(Buf, (Buf->BufUsed > 0), BufSizeRequired);
375 memcpy(Buf->buf + Buf->BufUsed,
379 Buf->buf[Buf->BufUsed] = '\0';
384 * \brief Escape a string for feeding out as a URL while appending it to a Buffer
385 * \param outbuf the output buffer
386 * \param oblen the size of outbuf to sanitize
387 * \param strbuf the input buffer
389 void StrBufUrlescAppend(StrBuf *OutBuf, const StrBuf *In, const char *PlainIn)
391 const char *pch, *pche;
394 const char ec[] = " +#&;`'|*?-~<>^()[]{}/$\"\\";
395 int eclen = sizeof(ec) -1;
397 if (((In == NULL) && (PlainIn == NULL)) || (OutBuf == NULL) )
399 if (PlainIn != NULL) {
400 len = strlen(PlainIn);
406 pche = pch + In->BufUsed;
413 pt = OutBuf->buf + OutBuf->BufUsed;
414 pte = OutBuf->buf + OutBuf->BufSize - 4; /**< we max append 3 chars at once plus the \0 */
418 IncreaseBuf(OutBuf, 1, -1);
419 pte = OutBuf->buf + OutBuf->BufSize - 4; /**< we max append 3 chars at once plus the \0 */
420 pt = OutBuf->buf + OutBuf->BufUsed;
424 for (b = 0; b < eclen; ++b) {
431 sprintf(pt,"%%%02X", *pch);
433 OutBuf->BufUsed += 3;
445 * \brief Append a string, escaping characters which have meaning in HTML.
447 * \param Target target buffer
448 * \param Source source buffer; set to NULL if you just have a C-String
449 * \param PlainIn Plain-C string to append; set to NULL if unused
450 * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
451 * \param nolinebreaks if set to 1, linebreaks are removed from the string.
452 * if set to 2, linebreaks are replaced by <br/>
454 long StrEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn, int nbsp, int nolinebreaks)
456 const char *aptr, *eiptr;
460 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
463 if (PlainIn != NULL) {
465 len = strlen(PlainIn);
470 eiptr = aptr + Source->BufUsed;
471 len = Source->BufUsed;
477 bptr = Target->buf + Target->BufUsed;
478 eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
480 while (aptr < eiptr){
482 IncreaseBuf(Target, 1, -1);
483 eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
484 bptr = Target->buf + Target->BufUsed;
487 memcpy(bptr, "<", 4);
489 Target->BufUsed += 4;
491 else if (*aptr == '>') {
492 memcpy(bptr, ">", 4);
494 Target->BufUsed += 4;
496 else if (*aptr == '&') {
497 memcpy(bptr, "&", 5);
499 Target->BufUsed += 5;
501 else if (*aptr == '"') {
502 memcpy(bptr, """, 6);
504 Target->BufUsed += 6;
506 else if (*aptr == '\'') {
507 memcpy(bptr, "'", 5);
509 Target->BufUsed += 5;
511 else if (*aptr == LB) {
516 else if (*aptr == RB) {
521 else if (*aptr == QU) {
526 else if ((*aptr == 32) && (nbsp == 1)) {
527 memcpy(bptr, " ", 6);
529 Target->BufUsed += 6;
531 else if ((*aptr == '\n') && (nolinebreaks == 1)) {
532 *bptr='\0'; /* nothing */
534 else if ((*aptr == '\n') && (nolinebreaks == 2)) {
535 memcpy(bptr, "<br/>", 11);
537 Target->BufUsed += 11;
541 else if ((*aptr == '\r') && (nolinebreaks != 0)) {
542 *bptr='\0'; /* nothing */
552 if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
554 return Target->BufUsed;
558 * \brief Append a string, escaping characters which have meaning in HTML.
559 * Converts linebreaks into blanks; escapes single quotes
560 * \param Target target buffer
561 * \param Source source buffer; set to NULL if you just have a C-String
562 * \param PlainIn Plain-C string to append; set to NULL if unused
564 void StrMsgEscAppend(StrBuf *Target, StrBuf *Source, const char *PlainIn)
566 const char *aptr, *eiptr;
570 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
573 if (PlainIn != NULL) {
575 len = strlen(PlainIn);
580 eiptr = aptr + Source->BufUsed;
581 len = Source->BufUsed;
587 eptr = Target->buf + Target->BufSize - 6;
588 tptr = Target->buf + Target->BufUsed;
590 while (aptr < eiptr){
592 IncreaseBuf(Target, 1, -1);
593 eptr = Target->buf + Target->BufSize - 6;
594 tptr = Target->buf + Target->BufUsed;
601 else if (*aptr == '\r') {
605 else if (*aptr == '\'') {
611 Target->BufUsed += 5;
622 * \brief Append a string, escaping characters which have meaning in JavaScript strings .
624 * \param Target target buffer
625 * \param Source source buffer; set to NULL if you just have a C-String
626 * \param PlainIn Plain-C string to append; set to NULL if unused
628 long StrECMAEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn)
630 const char *aptr, *eiptr;
634 if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
637 if (PlainIn != NULL) {
639 len = strlen(PlainIn);
644 eiptr = aptr + Source->BufUsed;
645 len = Source->BufUsed;
651 bptr = Target->buf + Target->BufUsed;
652 eptr = Target->buf + Target->BufSize - 2; /* our biggest unit to put in... */
654 while (aptr < eiptr){
656 IncreaseBuf(Target, 1, -1);
657 eptr = Target->buf + Target->BufSize - 2;
658 bptr = Target->buf + Target->BufUsed;
660 else if (*aptr == '"') {
661 memcpy(bptr, "\\\"", 2);
663 Target->BufUsed += 2;
664 } else if (*aptr == '\\') {
665 memcpy(bptr, "\\\\", 2);
667 Target->BufUsed += 2;
677 if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
679 return Target->BufUsed;
683 * \brief extracts a substring from Source into dest
684 * \param dest buffer to place substring into
685 * \param Source string to copy substring from
686 * \param Offset chars to skip from start
687 * \param nChars number of chars to copy
688 * \returns the number of chars copied; may be different from nChars due to the size of Source
690 int StrBufSub(StrBuf *dest, const StrBuf *Source, unsigned long Offset, size_t nChars)
693 if (Offset > Source->BufUsed)
698 if (Offset + nChars < Source->BufUsed)
700 if (nChars > dest->BufSize)
701 IncreaseBuf(dest, 0, nChars + 1);
702 memcpy(dest->buf, Source->buf + Offset, nChars);
703 dest->BufUsed = nChars;
704 dest->buf[dest->BufUsed] = '\0';
707 NCharsRemain = Source->BufUsed - Offset;
708 if (NCharsRemain > dest->BufSize)
709 IncreaseBuf(dest, 0, NCharsRemain + 1);
710 memcpy(dest->buf, Source->buf + Offset, NCharsRemain);
711 dest->BufUsed = NCharsRemain;
712 dest->buf[dest->BufUsed] = '\0';
717 * \brief sprintf like function appending the formated string to the buffer
718 * vsnprintf version to wrap into own calls
719 * \param Buf Buffer to extend by format and params
720 * \param format printf alike format to add
721 * \param ap va_list containing the items for format
723 void StrBufVAppendPrintf(StrBuf *Buf, const char *format, va_list ap)
726 size_t BufSize = Buf->BufSize;
727 size_t nWritten = Buf->BufSize + 1;
728 size_t Offset = Buf->BufUsed;
729 size_t newused = Offset + nWritten;
731 while (newused >= BufSize) {
733 nWritten = vsnprintf(Buf->buf + Offset,
734 Buf->BufSize - Offset,
737 newused = Offset + nWritten;
738 if (newused >= Buf->BufSize) {
739 IncreaseBuf(Buf, 1, newused);
742 Buf->BufUsed = Offset + nWritten;
743 BufSize = Buf->BufSize;
750 * \brief sprintf like function appending the formated string to the buffer
751 * \param Buf Buffer to extend by format and params
752 * \param format printf alike format to add
753 * \param ap va_list containing the items for format
755 void StrBufAppendPrintf(StrBuf *Buf, const char *format, ...)
757 size_t BufSize = Buf->BufSize;
758 size_t nWritten = Buf->BufSize + 1;
759 size_t Offset = Buf->BufUsed;
760 size_t newused = Offset + nWritten;
763 while (newused >= BufSize) {
764 va_start(arg_ptr, format);
765 nWritten = vsnprintf(Buf->buf + Buf->BufUsed,
766 Buf->BufSize - Buf->BufUsed,
769 newused = Buf->BufUsed + nWritten;
770 if (newused >= Buf->BufSize) {
771 IncreaseBuf(Buf, 1, newused);
774 Buf->BufUsed += nWritten;
775 BufSize = Buf->BufSize;
782 * \brief sprintf like function putting the formated string into the buffer
783 * \param Buf Buffer to extend by format and params
784 * \param format printf alike format to add
785 * \param ap va_list containing the items for format
787 void StrBufPrintf(StrBuf *Buf, const char *format, ...)
789 size_t nWritten = Buf->BufSize + 1;
792 while (nWritten >= Buf->BufSize) {
793 va_start(arg_ptr, format);
794 nWritten = vsnprintf(Buf->buf, Buf->BufSize, format, arg_ptr);
796 Buf->BufUsed = nWritten ;
797 if (nWritten >= Buf->BufSize)
798 IncreaseBuf(Buf, 0, 0);
804 * \brief Counts the numbmer of tokens in a buffer
805 * \param Source String to count tokens in
806 * \param tok Tokenizer char to count
807 * \returns numbers of tokenizer chars found
809 inline int StrBufNum_tokens(const StrBuf *source, char tok)
813 return num_tokens(source->buf, tok);
817 * remove_token() - a tokenizer that kills, maims, and destroys
820 * \brief a string tokenizer
821 * \param Source StringBuffer to read into
822 * \param parmnum n'th parameter to remove
823 * \param separator tokenizer param
824 * \returns -1 if not found, else length of token.
826 int StrBufRemove_token(StrBuf *Source, int parmnum, char separator)
829 char *d, *s; /* dest, source */
832 /* Find desired parameter */
834 while (count < parmnum) {
835 /* End of string, bail! */
840 if (*d == separator) {
845 if (!d) return 0; /* Parameter not found */
847 /* Find next parameter */
849 while (*s && *s != separator) {
858 memmove(d, s, Source->BufUsed - (s - Source->buf) + 1);
859 Source->BufUsed -= (ReducedBy + 1);
861 else if (d == Source->buf) {
867 Source->BufUsed -= (ReducedBy + 1);
880 * \brief a string tokenizer
881 * \param dest Destination StringBuffer
882 * \param Source StringBuffer to read into
883 * \param parmnum n'th parameter to extract
884 * \param separator tokenizer param
885 * \returns -1 if not found, else length of token.
887 int StrBufExtract_token(StrBuf *dest, const StrBuf *Source, int parmnum, char separator)
889 const char *s, *e; //* source * /
890 int len = 0; //* running total length of extracted string * /
891 int current_token = 0; //* token currently being processed * /
900 if ((Source == NULL) || (Source->BufUsed ==0)) {
904 e = s + Source->BufUsed;
907 //lprintf (CTDL_DEBUG, "test >: n: %d sep: %c source: %s \n willi \n", parmnum, separator, source);
909 while ((s<e) && !IsEmptyStr(s)) {
910 if (*s == separator) {
913 if (len >= dest->BufSize)
914 if (!IncreaseBuf(dest, 1, -1))
916 if ( (current_token == parmnum) &&
921 else if (current_token > parmnum) {
927 dest->buf[len] = '\0';
930 if (current_token < parmnum) {
931 //lprintf (CTDL_DEBUG,"test <!: %s\n", dest);
934 //lprintf (CTDL_DEBUG,"test <: %d; %s\n", len, dest);
940 * \brief a string tokenizer to fetch an integer
941 * \param dest Destination StringBuffer
942 * \param parmnum n'th parameter to extract
943 * \param separator tokenizer param
944 * \returns 0 if not found, else integer representation of the token
946 int StrBufExtract_int(const StrBuf* Source, int parmnum, char separator)
956 if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
963 * \brief a string tokenizer to fetch a long integer
964 * \param dest Destination StringBuffer
965 * \param parmnum n'th parameter to extract
966 * \param separator tokenizer param
967 * \returns 0 if not found, else long integer representation of the token
969 long StrBufExtract_long(const StrBuf* Source, int parmnum, char separator)
979 if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
987 * \brief a string tokenizer to fetch an unsigned long
988 * \param dest Destination StringBuffer
989 * \param parmnum n'th parameter to extract
990 * \param separator tokenizer param
991 * \returns 0 if not found, else unsigned long representation of the token
993 unsigned long StrBufExtract_unsigned_long(const StrBuf* Source, int parmnum, char separator)
1004 if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0) {
1008 return (unsigned long) atol(pnum);
1017 * \brief Read a line from socket
1018 * flushes and closes the FD on error
1019 * \param buf the buffer to get the input to
1020 * \param fd pointer to the filedescriptor to read
1021 * \param append Append to an existing string or replace?
1022 * \param Error strerror() on error
1023 * \returns numbers of chars read
1025 int StrBufTCP_read_line(StrBuf *buf, int *fd, int append, const char **Error)
1027 int len, rlen, slen;
1032 slen = len = buf->BufUsed;
1034 rlen = read(*fd, &buf->buf[len], 1);
1036 *Error = strerror(errno);
1043 if (buf->buf[len] == '\n')
1045 if (buf->buf[len] != '\r')
1047 if (!(len < buf->BufSize)) {
1049 buf->buf[len+1] = '\0';
1050 IncreaseBuf(buf, 1, -1);
1054 buf->buf[len] = '\0';
1059 * \brief Read a line from socket
1060 * flushes and closes the FD on error
1061 * \param buf the buffer to get the input to
1062 * \param fd pointer to the filedescriptor to read
1063 * \param append Append to an existing string or replace?
1064 * \param Error strerror() on error
1065 * \returns numbers of chars read
1067 int StrBufTCP_read_buffered_line(StrBuf *Line,
1071 int selectresolution,
1075 int nSuccessLess = 0;
1081 if (buf->BufUsed > 0) {
1082 pch = strchr(buf->buf, '\n');
1085 len = pch - buf->buf;
1086 if (len > 0 && (*(pch - 1) == '\r') )
1088 StrBufSub(Line, buf, 0, len - rlen);
1089 StrBufCutLeft(buf, len + 1);
1094 if (buf->BufSize - buf->BufUsed < 10)
1095 IncreaseBuf(buf, 1, -1);
1097 fdflags = fcntl(*fd, F_GETFL);
1098 if ((fdflags & O_NONBLOCK) == O_NONBLOCK)
1101 while ((nSuccessLess < timeout) && (pch == NULL)) {
1102 tv.tv_sec = selectresolution;
1107 if (select(*fd + 1, NULL, &rfds, NULL, &tv) == -1) {
1108 *Error = strerror(errno);
1113 if (FD_ISSET(*fd, &rfds)) {
1115 &buf->buf[buf->BufUsed],
1116 buf->BufSize - buf->BufUsed - 1);
1118 *Error = strerror(errno);
1123 else if (rlen > 0) {
1125 buf->BufUsed += rlen;
1126 buf->buf[buf->BufUsed] = '\0';
1127 if (buf->BufUsed + 10 > buf->BufSize) {
1128 IncreaseBuf(buf, 1, -1);
1130 pch = strchr(buf->buf, '\n');
1138 len = pch - buf->buf;
1139 if (len > 0 && (*(pch - 1) == '\r') )
1141 StrBufSub(Line, buf, 0, len - rlen);
1142 StrBufCutLeft(buf, len + 1);
1150 * \brief Input binary data from socket
1151 * flushes and closes the FD on error
1152 * \param buf the buffer to get the input to
1153 * \param fd pointer to the filedescriptor to read
1154 * \param append Append to an existing string or replace?
1155 * \param nBytes the maximal number of bytes to read
1156 * \param Error strerror() on error
1157 * \returns numbers of chars read
1159 int StrBufReadBLOB(StrBuf *Buf, int *fd, int append, long nBytes, const char **Error)
1163 int len, rlen, slen;
1167 if ((Buf == NULL) || (*fd == -1))
1171 if (Buf->BufUsed + nBytes > Buf->BufSize)
1172 IncreaseBuf(Buf, 1, Buf->BufUsed + nBytes);
1174 ptr = Buf->buf + Buf->BufUsed;
1176 slen = len = Buf->BufUsed;
1178 fdflags = fcntl(*fd, F_GETFL);
1180 while (nRead < nBytes) {
1181 if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
1184 if (select(*fd + 1, NULL, &wset, NULL, NULL) == -1) {
1185 *Error = strerror(errno);
1190 if ((rlen = read(*fd,
1192 nBytes - nRead)) == -1) {
1195 *Error = strerror(errno);
1200 Buf->BufUsed += rlen;
1202 Buf->buf[Buf->BufUsed] = '\0';
1207 * \brief Cut nChars from the start of the string
1208 * \param Buf Buffer to modify
1209 * \param nChars how many chars should be skipped?
1211 void StrBufCutLeft(StrBuf *Buf, int nChars)
1213 if (nChars >= Buf->BufUsed) {
1217 memmove(Buf->buf, Buf->buf + nChars, Buf->BufUsed - nChars);
1218 Buf->BufUsed -= nChars;
1219 Buf->buf[Buf->BufUsed] = '\0';
1223 * \brief Cut the trailing n Chars from the string
1224 * \param Buf Buffer to modify
1225 * \param nChars how many chars should be trunkated?
1227 void StrBufCutRight(StrBuf *Buf, int nChars)
1229 if (nChars >= Buf->BufUsed) {
1233 Buf->BufUsed -= nChars;
1234 Buf->buf[Buf->BufUsed] = '\0';
1238 * \brief Cut the string after n Chars
1239 * \param Buf Buffer to modify
1240 * \param AfternChars after how many chars should we trunkate the string?
1241 * \param At if non-null and points inside of our string, cut it there.
1243 void StrBufCutAt(StrBuf *Buf, int AfternChars, const char *At)
1246 AfternChars = At - Buf->buf;
1249 if ((AfternChars < 0) || (AfternChars >= Buf->BufUsed))
1251 Buf->BufUsed = AfternChars;
1252 Buf->buf[Buf->BufUsed] = '\0';
1257 * Strip leading and trailing spaces from a string; with premeasured and adjusted length.
1258 * buf - the string to modify
1259 * len - length of the string.
1261 void StrBufTrim(StrBuf *Buf)
1264 if ((Buf == NULL) || (Buf->BufUsed == 0)) return;
1266 while ((Buf->BufUsed > delta) && (isspace(Buf->buf[delta]))){
1269 if (delta > 0) StrBufCutLeft(Buf, delta);
1271 if (Buf->BufUsed == 0) return;
1272 while (isspace(Buf->buf[Buf->BufUsed - 1])){
1275 Buf->buf[Buf->BufUsed] = '\0';
1279 void StrBufUpCase(StrBuf *Buf)
1284 pche = pch + Buf->BufUsed;
1285 while (pch < pche) {
1286 *pch = toupper(*pch);
1292 void StrBufLowerCase(StrBuf *Buf)
1297 pche = pch + Buf->BufUsed;
1298 while (pch < pche) {
1299 *pch = tolower(*pch);
1306 * \brief unhide special chars hidden to the HTML escaper
1307 * \param target buffer to put the unescaped string in
1308 * \param source buffer to unescape
1310 void StrBufEUid_unescapize(StrBuf *target, const StrBuf *source)
1316 FlushStrBuf(target);
1318 if (source == NULL ||target == NULL)
1323 len = source->BufUsed;
1324 for (a = 0; a < len; ++a) {
1325 if (target->BufUsed >= target->BufSize)
1326 IncreaseBuf(target, 1, -1);
1328 if (source->buf[a] == '=') {
1329 hex[0] = source->buf[a + 1];
1330 hex[1] = source->buf[a + 2];
1333 sscanf(hex, "%02x", &b);
1334 target->buf[target->BufUsed] = b;
1335 target->buf[++target->BufUsed] = 0;
1339 target->buf[target->BufUsed] = source->buf[a];
1340 target->buf[++target->BufUsed] = 0;
1347 * \brief hide special chars from the HTML escapers and friends
1348 * \param target buffer to put the escaped string in
1349 * \param source buffer to escape
1351 void StrBufEUid_escapize(StrBuf *target, const StrBuf *source)
1356 FlushStrBuf(target);
1358 if (source == NULL ||target == NULL)
1363 len = source->BufUsed;
1364 for (i=0; i<len; ++i) {
1365 if (target->BufUsed + 4 >= target->BufSize)
1366 IncreaseBuf(target, 1, -1);
1367 if ( (isalnum(source->buf[i])) ||
1368 (source->buf[i]=='-') ||
1369 (source->buf[i]=='_') ) {
1370 target->buf[target->BufUsed++] = source->buf[i];
1373 sprintf(&target->buf[target->BufUsed],
1375 (0xFF &source->buf[i]));
1376 target->BufUsed += 3;
1379 target->buf[target->BufUsed + 1] = '\0';
1383 * \brief uses the same calling syntax as compress2(), but it
1384 * creates a stream compatible with HTTP "Content-encoding: gzip"
1387 #define DEF_MEM_LEVEL 8 /*< memlevel??? */
1388 #define OS_CODE 0x03 /*< unix */
1389 int ZEXPORT compress_gzip(Bytef * dest, /*< compressed buffer*/
1390 size_t * destLen, /*< length of the compresed data */
1391 const Bytef * source, /*< source to encode */
1392 uLong sourceLen, /*< length of source to encode */
1393 int level) /*< compression level */
1395 const int gz_magic[2] = { 0x1f, 0x8b }; /* gzip magic header */
1397 /* write gzip header */
1398 snprintf((char *) dest, *destLen,
1399 "%c%c%c%c%c%c%c%c%c%c",
1400 gz_magic[0], gz_magic[1], Z_DEFLATED,
1401 0 /*flags */ , 0, 0, 0, 0 /*time */ , 0 /* xflags */ ,
1404 /* normal deflate */
1407 stream.next_in = (Bytef *) source;
1408 stream.avail_in = (uInt) sourceLen;
1409 stream.next_out = dest + 10L; // after header
1410 stream.avail_out = (uInt) * destLen;
1411 if ((uLong) stream.avail_out != *destLen)
1414 stream.zalloc = (alloc_func) 0;
1415 stream.zfree = (free_func) 0;
1416 stream.opaque = (voidpf) 0;
1418 err = deflateInit2(&stream, level, Z_DEFLATED, -MAX_WBITS,
1419 DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
1423 err = deflate(&stream, Z_FINISH);
1424 if (err != Z_STREAM_END) {
1425 deflateEnd(&stream);
1426 return err == Z_OK ? Z_BUF_ERROR : err;
1428 *destLen = stream.total_out + 10L;
1430 /* write CRC and Length */
1431 uLong crc = crc32(0L, source, sourceLen);
1433 for (n = 0; n < 4; ++n, ++*destLen) {
1434 dest[*destLen] = (int) (crc & 0xff);
1437 uLong len = stream.total_in;
1438 for (n = 0; n < 4; ++n, ++*destLen) {
1439 dest[*destLen] = (int) (len & 0xff);
1442 err = deflateEnd(&stream);
1449 * Attention! If you feed this a Const String, you must maintain the uncompressed buffer yourself!
1451 int CompressBuffer(StrBuf *Buf)
1454 char *compressed_data = NULL;
1455 size_t compressed_len, bufsize;
1458 bufsize = compressed_len = ((Buf->BufUsed * 101) / 100) + 100;
1459 compressed_data = malloc(compressed_len);
1461 /* Flush some space after the used payload so valgrind shuts up... */
1462 while ((i < 10) && (Buf->BufUsed + i < Buf->BufSize))
1463 Buf->buf[Buf->BufUsed + i++] = '\0';
1464 if (compress_gzip((Bytef *) compressed_data,
1467 (uLongf) Buf->BufUsed, Z_BEST_SPEED) == Z_OK) {
1470 Buf->buf = compressed_data;
1471 Buf->BufUsed = compressed_len;
1472 Buf->BufSize = bufsize;
1473 /* Flush some space after the used payload so valgrind shuts up... */
1475 while ((i < 10) && (Buf->BufUsed + i < Buf->BufSize))
1476 Buf->buf[Buf->BufUsed + i++] = '\0';
1479 free(compressed_data);
1481 #endif /* HAVE_ZLIB */
1486 * \brief decode a buffer from base 64 encoding; destroys original
1487 * \param Buf Buffor to transform
1489 int StrBufDecodeBase64(StrBuf *Buf)
1493 if (Buf == NULL) return -1;
1495 xferbuf = (char*) malloc(Buf->BufSize);
1496 siz = CtdlDecodeBase64(xferbuf,
1506 * \brief replace all chars >0x20 && < 0x7F with Mute
1507 * \param Mute char to put over invalid chars
1508 * \param Buf Buffor to transform
1510 int StrBufSanitizeAscii(StrBuf *Buf, const char Mute)
1514 if (Buf == NULL) return -1;
1516 while (pch < Buf->buf + Buf->BufUsed) {
1517 if ((*pch < 0x20) || (*pch > 0x7F))
1521 return Buf->BufUsed;
1526 * \brief remove escaped strings from i.e. the url string (like %20 for blanks)
1527 * \param Buf Buffer to translate
1528 * \param StripBlanks Reduce several blanks to one?
1530 long StrBufUnescape(StrBuf *Buf, int StripBlanks)
1536 while ((Buf->BufUsed > 0) && (isspace(Buf->buf[Buf->BufUsed - 1]))){
1537 Buf->buf[Buf->BufUsed - 1] = '\0';
1542 while (a < Buf->BufUsed) {
1543 if (Buf->buf[a] == '+')
1545 else if (Buf->buf[a] == '%') {
1546 /* don't let % chars through, rather truncate the input. */
1547 if (a + 2 > Buf->BufUsed) {
1552 hex[0] = Buf->buf[a + 1];
1553 hex[1] = Buf->buf[a + 2];
1556 sscanf(hex, "%02x", &b);
1557 Buf->buf[a] = (char) b;
1558 len = Buf->BufUsed - a - 2;
1560 memmove(&Buf->buf[a + 1], &Buf->buf[a + 3], len);
1572 * \brief RFC2047-encode a header field if necessary.
1573 * If no non-ASCII characters are found, the string
1574 * will be copied verbatim without encoding.
1576 * \param target Target buffer.
1577 * \param source Source string to be encoded.
1578 * \returns encoded length; -1 if non success.
1580 int StrBufRFC2047encode(StrBuf **target, const StrBuf *source)
1582 const char headerStr[] = "=?UTF-8?Q?";
1583 int need_to_encode = 0;
1587 if ((source == NULL) ||
1591 while ((i < source->BufUsed) &&
1592 (!IsEmptyStr (&source->buf[i])) &&
1593 (need_to_encode == 0)) {
1594 if (((unsigned char) source->buf[i] < 32) ||
1595 ((unsigned char) source->buf[i] > 126)) {
1601 if (!need_to_encode) {
1602 if (*target == NULL) {
1603 *target = NewStrBufPlain(source->buf, source->BufUsed);
1606 FlushStrBuf(*target);
1607 StrBufAppendBuf(*target, source, 0);
1609 return (*target)->BufUsed;
1611 if (*target == NULL)
1612 *target = NewStrBufPlain(NULL, sizeof(headerStr) + source->BufUsed * 2);
1613 else if (sizeof(headerStr) + source->BufUsed > (*target)->BufSize)
1614 IncreaseBuf(*target, sizeof(headerStr) + source->BufUsed, 0);
1615 memcpy ((*target)->buf, headerStr, sizeof(headerStr) - 1);
1616 (*target)->BufUsed = sizeof(headerStr) - 1;
1617 for (i=0; (i < source->BufUsed); ++i) {
1618 if ((*target)->BufUsed + 4 > (*target)->BufSize)
1619 IncreaseBuf(*target, 1, 0);
1620 ch = (unsigned char) source->buf[i];
1621 if ((ch < 32) || (ch > 126) || (ch == 61)) {
1622 sprintf(&(*target)->buf[(*target)->BufUsed], "=%02X", ch);
1623 (*target)->BufUsed += 3;
1626 (*target)->buf[(*target)->BufUsed] = ch;
1627 (*target)->BufUsed++;
1631 if ((*target)->BufUsed + 4 > (*target)->BufSize)
1632 IncreaseBuf(*target, 1, 0);
1634 (*target)->buf[(*target)->BufUsed++] = '?';
1635 (*target)->buf[(*target)->BufUsed++] = '=';
1636 (*target)->buf[(*target)->BufUsed] = '\0';
1637 return (*target)->BufUsed;;
1641 * \brief replaces all occurances of 'search' by 'replace'
1642 * \param buf Buffer to modify
1643 * \param search character to search
1644 * \param relpace character to replace search by
1646 void StrBufReplaceChars(StrBuf *buf, char search, char replace)
1651 for (i=0; i<buf->BufUsed; i++)
1652 if (buf->buf[i] == search)
1653 buf->buf[i] = replace;
1660 * Wrapper around iconv_open()
1661 * Our version adds aliases for non-standard Microsoft charsets
1662 * such as 'MS950', aliasing them to names like 'CP950'
1664 * tocode Target encoding
1665 * fromcode Source encoding
1667 void ctdl_iconv_open(const char *tocode, const char *fromcode, void *pic)
1670 iconv_t ic = (iconv_t)(-1) ;
1671 ic = iconv_open(tocode, fromcode);
1672 if (ic == (iconv_t)(-1) ) {
1673 char alias_fromcode[64];
1674 if ( (strlen(fromcode) == 5) && (!strncasecmp(fromcode, "MS", 2)) ) {
1675 safestrncpy(alias_fromcode, fromcode, sizeof alias_fromcode);
1676 alias_fromcode[0] = 'C';
1677 alias_fromcode[1] = 'P';
1678 ic = iconv_open(tocode, alias_fromcode);
1681 *(iconv_t *)pic = ic;
1687 static inline char *FindNextEnd (const StrBuf *Buf, char *bptr)
1690 /* Find the next ?Q? */
1691 if (Buf->BufUsed - (bptr - Buf->buf) < 6)
1694 end = strchr(bptr + 2, '?');
1699 if ((Buf->BufUsed - (end - Buf->buf) > 3) &&
1700 ((*(end + 1) == 'B') || (*(end + 1) == 'Q')) &&
1701 (*(end + 2) == '?')) {
1702 /* skip on to the end of the cluster, the next ?= */
1703 end = strstr(end + 3, "?=");
1706 /* sort of half valid encoding, try to find an end. */
1707 end = strstr(bptr, "?=");
1712 void StrBufConvert(StrBuf *ConvertBuf, StrBuf *TmpBuf, void *pic)
1717 char *ibuf; /**< Buffer of characters to be converted */
1718 char *obuf; /**< Buffer for converted characters */
1719 size_t ibuflen; /**< Length of input buffer */
1720 size_t obuflen; /**< Length of output buffer */
1723 if (ConvertBuf->BufUsed > TmpBuf->BufSize)
1724 IncreaseBuf(TmpBuf, 0, ConvertBuf->BufUsed);
1726 ic = *(iconv_t*)pic;
1727 ibuf = ConvertBuf->buf;
1728 ibuflen = ConvertBuf->BufUsed;
1730 obuflen = TmpBuf->BufSize;
1732 iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
1734 /* little card game: wheres the red lady? */
1735 ibuf = ConvertBuf->buf;
1736 BufSize = ConvertBuf->BufSize;
1738 ConvertBuf->buf = TmpBuf->buf;
1739 ConvertBuf->BufSize = TmpBuf->BufSize;
1740 ConvertBuf->BufUsed = TmpBuf->BufSize - obuflen;
1741 ConvertBuf->buf[ConvertBuf->BufUsed] = '\0';
1744 TmpBuf->BufSize = BufSize;
1745 TmpBuf->BufUsed = 0;
1746 TmpBuf->buf[0] = '\0';
1753 inline static void DecodeSegment(StrBuf *Target,
1754 const StrBuf *DecodeMe,
1758 StrBuf *ConvertBuf2,
1759 StrBuf *FoundCharset)
1764 iconv_t ic = (iconv_t)(-1);
1766 /* Now we handle foreign character sets properly encoded
1767 * in RFC2047 format.
1769 StaticBuf.buf = SegmentStart;
1770 StaticBuf.BufUsed = SegmentEnd - SegmentStart;
1771 StaticBuf.BufSize = DecodeMe->BufSize - (SegmentStart - DecodeMe->buf);
1772 extract_token(charset, SegmentStart, 1, '?', sizeof charset);
1773 if (FoundCharset != NULL) {
1774 FlushStrBuf(FoundCharset);
1775 StrBufAppendBufPlain(FoundCharset, charset, -1, 0);
1777 extract_token(encoding, SegmentStart, 2, '?', sizeof encoding);
1778 StrBufExtract_token(ConvertBuf, &StaticBuf, 3, '?');
1780 *encoding = toupper(*encoding);
1781 if (*encoding == 'B') { /**< base64 */
1782 ConvertBuf2->BufUsed = CtdlDecodeBase64(ConvertBuf2->buf,
1784 ConvertBuf->BufUsed);
1786 else if (*encoding == 'Q') { /**< quoted-printable */
1790 while (pos < ConvertBuf->BufUsed)
1792 if (ConvertBuf->buf[pos] == '_')
1793 ConvertBuf->buf[pos] = ' ';
1797 ConvertBuf2->BufUsed = CtdlDecodeQuotedPrintable(
1800 ConvertBuf->BufUsed);
1803 StrBufAppendBuf(ConvertBuf2, ConvertBuf, 0);
1806 ctdl_iconv_open("UTF-8", charset, &ic);
1807 if (ic != (iconv_t)(-1) ) {
1808 StrBufConvert(ConvertBuf2, ConvertBuf, &ic);
1809 StrBufAppendBuf(Target, ConvertBuf2, 0);
1813 StrBufAppendBufPlain(Target, HKEY("(unreadable)"), 0);
1817 * Handle subjects with RFC2047 encoding such as:
1818 * =?koi8-r?B?78bP0s3Mxc7JxSDXz9rE1dvO2c3JINvB0sHNySDP?=
1820 void StrBuf_RFC822_to_Utf8(StrBuf *Target, const StrBuf *DecodeMe, const StrBuf* DefaultCharset, StrBuf *FoundCharset)
1822 StrBuf *ConvertBuf, *ConvertBuf2;
1823 char *start, *end, *next, *nextend, *ptr = NULL;
1824 iconv_t ic = (iconv_t)(-1) ;
1828 int illegal_non_rfc2047_encoding = 0;
1830 /* Sometimes, badly formed messages contain strings which were simply
1831 * written out directly in some foreign character set instead of
1832 * using RFC2047 encoding. This is illegal but we will attempt to
1833 * handle it anyway by converting from a user-specified default
1834 * charset to UTF-8 if we see any nonprintable characters.
1837 len = StrLength(DecodeMe);
1838 for (i=0; i<DecodeMe->BufUsed; ++i) {
1839 if ((DecodeMe->buf[i] < 32) || (DecodeMe->buf[i] > 126)) {
1840 illegal_non_rfc2047_encoding = 1;
1845 ConvertBuf = NewStrBufPlain(NULL, StrLength(DecodeMe));
1846 if ((illegal_non_rfc2047_encoding) &&
1847 (strcasecmp(ChrPtr(DefaultCharset), "UTF-8")) &&
1848 (strcasecmp(ChrPtr(DefaultCharset), "us-ascii")) )
1850 ctdl_iconv_open("UTF-8", ChrPtr(DefaultCharset), &ic);
1851 if (ic != (iconv_t)(-1) ) {
1852 StrBufConvert((StrBuf*)DecodeMe, ConvertBuf, &ic);///TODO: don't void const?
1857 /* pre evaluate the first pair */
1858 nextend = end = NULL;
1859 len = StrLength(DecodeMe);
1860 start = strstr(DecodeMe->buf, "=?");
1861 eptr = DecodeMe->buf + DecodeMe->BufUsed;
1863 end = FindNextEnd (DecodeMe, start);
1865 StrBufAppendBuf(Target, DecodeMe, 0);
1866 FreeStrBuf(&ConvertBuf);
1870 ConvertBuf2 = NewStrBufPlain(NULL, StrLength(DecodeMe));
1872 if (start != DecodeMe->buf)
1873 StrBufAppendBufPlain(Target, DecodeMe->buf, start - DecodeMe->buf, 0);
1875 * Since spammers will go to all sorts of absurd lengths to get their
1876 * messages through, there are LOTS of corrupt headers out there.
1877 * So, prevent a really badly formed RFC2047 header from throwing
1878 * this function into an infinite loop.
1880 while ((start != NULL) &&
1887 DecodeSegment(Target,
1895 next = strstr(end, "=?");
1897 if ((next != NULL) &&
1899 nextend = FindNextEnd(DecodeMe, next);
1900 if (nextend == NULL)
1903 /* did we find two partitions */
1904 if ((next != NULL) &&
1908 while ((ptr < next) &&
1914 /* did we find a gab just filled with blanks? */
1919 len - (next - start));
1921 /* now terminate the gab at the end */
1922 delta = (next - end) - 2; ////TODO: const!
1923 ((StrBuf*)DecodeMe)->BufUsed -= delta;
1924 ((StrBuf*)DecodeMe)->buf[DecodeMe->BufUsed] = '\0';
1926 /* move next to its new location. */
1931 /* our next-pair is our new first pair now. */
1937 nextend = DecodeMe->buf + DecodeMe->BufUsed;
1938 if ((end != NULL) && (end < nextend)) {
1940 while ( (ptr < nextend) &&
1947 StrBufAppendBufPlain(Target, end, nextend - end, 0);
1949 FreeStrBuf(&ConvertBuf);
1950 FreeStrBuf(&ConvertBuf2);
1955 long StrBuf_Utf8StrLen(StrBuf *Buf)
1957 return Ctdl_Utf8StrLen(Buf->buf);
1960 long StrBuf_Utf8StrCut(StrBuf *Buf, int maxlen)
1964 CutAt = Ctdl_Utf8StrCut(Buf->buf, maxlen);
1965 if (CutAt != NULL) {
1966 Buf->BufUsed = CutAt - Buf->buf;
1967 Buf->buf[Buf->BufUsed] = '\0';
1969 return Buf->BufUsed;
1974 int StrBufSipLine(StrBuf *LineBuf, StrBuf *Buf, const char **Ptr)
1976 const char *aptr, *ptr, *eptr;
1983 ptr = aptr = Buf->buf;
1987 optr = LineBuf->buf;
1988 eptr = Buf->buf + Buf->BufUsed;
1989 xptr = LineBuf->buf + LineBuf->BufSize;
1991 while ((*ptr != '\n') &&
1998 LineBuf->BufUsed = optr - LineBuf->buf;
1999 IncreaseBuf(LineBuf, 1, LineBuf->BufUsed + 1);
2000 optr = LineBuf->buf + LineBuf->BufUsed;
2001 xptr = LineBuf->buf + LineBuf->BufSize;
2004 LineBuf->BufUsed = optr - LineBuf->buf;
2013 return Buf->BufUsed - (ptr - Buf->buf);