+#include "../sysdep.h"
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <stdarg.h>
#include "libcitadel.h"
+#ifdef HAVE_ICONV
+#include <iconv.h>
+#endif
+
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+#endif
+
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+int ZEXPORT compress_gzip(Bytef * dest, size_t * destLen,
+ const Bytef * source, uLong sourceLen, int level);
+#endif
+
+/**
+ * Private Structure for the Stringbuffer
+ */
struct StrBuf {
- char *buf;
- long BufSize;
- long BufUsed;
- int ConstBuf;
+ char *buf; /**< the pointer to the dynamic buffer */
+ long BufSize; /**< how many spcae do we optain */
+ long BufUsed; /**< StNumber of Chars used excluding the trailing \0 */
+ int ConstBuf; /**< are we just a wrapper arround a static buffer and musn't we be changed? */
};
+/**
+ * \Brief Cast operator to Plain String
+ * Note: if the buffer is altered by StrBuf operations, this pointer may become
+ * invalid. So don't lean on it after altering the buffer!
+ * Since this operation is considered cheap, rather call it often than risking
+ * your pointer to become invalid!
+ * \param Str the string we want to get the c-string representation for
+ * \returns the Pointer to the Content. Don't mess with it!
+ */
inline const char *ChrPtr(const StrBuf *Str)
{
if (Str == NULL)
return Str->buf;
}
+/**
+ * \brief since we know strlen()'s result, provide it here.
+ * \param Str the string to return the length to
+ * \returns contentlength of the buffer
+ */
inline int StrLength(const StrBuf *Str)
{
return (Str != NULL) ? Str->BufUsed : 0;
}
+/**
+ * \brief local utility function to resize the buffer
+ * \param Buf the buffer whichs storage we should increase
+ * \param KeepOriginal should we copy the original buffer or just start over with a new one
+ * \param DestSize what should fit in after?
+ */
+static int IncreaseBuf(StrBuf *Buf, int KeepOriginal, int DestSize)
+{
+ char *NewBuf;
+ size_t NewSize = Buf->BufSize * 2;
+
+ if (Buf->ConstBuf)
+ return -1;
+
+ if (DestSize > 0)
+ while (NewSize <= DestSize)
+ NewSize *= 2;
+
+ NewBuf= (char*) malloc(NewSize);
+ if (KeepOriginal && (Buf->BufUsed > 0))
+ {
+ memcpy(NewBuf, Buf->buf, Buf->BufUsed);
+ }
+ else
+ {
+ NewBuf[0] = '\0';
+ Buf->BufUsed = 0;
+ }
+ free (Buf->buf);
+ Buf->buf = NewBuf;
+ Buf->BufSize *= 2;
+ return Buf->BufSize;
+}
+
+/**
+ * Allocate a new buffer with default buffer size
+ * \returns the new stringbuffer
+ */
StrBuf* NewStrBuf(void)
{
StrBuf *NewBuf;
return NewBuf;
}
+/**
+ * \brief Copy Constructor; returns a duplicate of CopyMe
+ * \params CopyMe Buffer to faxmilate
+ * \returns the new stringbuffer
+ */
StrBuf* NewStrBufDup(const StrBuf *CopyMe)
{
StrBuf *NewBuf;
memcpy(NewBuf->buf, CopyMe->buf, CopyMe->BufUsed + 1);
NewBuf->BufUsed = CopyMe->BufUsed;
NewBuf->BufSize = CopyMe->BufSize;
+ NewBuf->ConstBuf = 0;
return NewBuf;
}
+/**
+ * \brief create a new Buffer using an existing c-string
+ * this function should also be used if you want to pre-suggest
+ * the buffer size to allocate in conjunction with ptr == NULL
+ * \param ptr the c-string to copy; may be NULL to create a blank instance
+ * \param nChars How many chars should we copy; -1 if we should measure the length ourselves
+ * \returns the new stringbuffer
+ */
StrBuf* NewStrBufPlain(const char* ptr, int nChars)
{
StrBuf *NewBuf;
return NewBuf;
}
+/**
+ * \brief Set an existing buffer from a c-string
+ * \param ptr c-string to put into
+ * \param nChars set to -1 if we should work 0-terminated
+ * \returns the new length of the string
+ */
+int StrBufPlain(StrBuf *Buf, const char* ptr, int nChars)
+{
+ size_t Siz = Buf->BufSize;
+ size_t CopySize;
+
+ if (nChars < 0)
+ CopySize = strlen(ptr);
+ else
+ CopySize = nChars;
+
+ while (Siz <= CopySize)
+ Siz *= 2;
+
+ if (Siz != Buf->BufSize)
+ IncreaseBuf(Buf, 0, Siz);
+ memcpy(Buf->buf, ptr, CopySize);
+ Buf->buf[CopySize] = '\0';
+ Buf->BufUsed = CopySize;
+ Buf->ConstBuf = 0;
+ return CopySize;
+}
+
+/**
+ * \brief use strbuf as wrapper for a string constant for easy handling
+ * \param StringConstant a string to wrap
+ * \param SizeOfConstant should be sizeof(StringConstant)-1
+ */
StrBuf* _NewConstStrBuf(const char* StringConstant, size_t SizeOfStrConstant)
{
StrBuf *NewBuf;
}
-static int IncreaseBuf(StrBuf *Buf, int KeepOriginal, int DestSize)
-{
- char *NewBuf;
- size_t NewSize = Buf->BufSize * 2;
-
- if (Buf->ConstBuf)
- return -1;
-
- if (DestSize > 0)
- while (NewSize < DestSize)
- NewSize *= 2;
-
- NewBuf= (char*) malloc(NewSize);
- if (KeepOriginal)
- {
- memcpy(NewBuf, Buf->buf, Buf->BufUsed);
- }
- else
- {
- NewBuf[0] = '\0';
- Buf->BufUsed = 0;
- }
- free (Buf->buf);
- Buf->buf = NewBuf;
- Buf->BufSize *= 2;
- return Buf->BufSize;
-}
-
+/**
+ * \brief flush the content of a Buf; keep its struct
+ * \param buf Buffer to flush
+ */
int FlushStrBuf(StrBuf *buf)
{
+ if (buf == NULL)
+ return -1;
if (buf->ConstBuf)
return -1;
buf->buf[0] ='\0';
return 0;
}
+/**
+ * \brief Release a Buffer
+ * Its a double pointer, so it can NULL your pointer
+ * so fancy SIG11 appear instead of random results
+ * \param FreeMe Pointer Pointer to the buffer to free
+ */
void FreeStrBuf (StrBuf **FreeMe)
{
if (*FreeMe == NULL)
*FreeMe = NULL;
}
+/**
+ * \brief Release the buffer
+ * If you want put your StrBuf into a Hash, use this as Destructor.
+ * \param VFreeMe untyped pointer to a StrBuf. be shure to do the right thing [TM]
+ */
void HFreeStrBuf (void *VFreeMe)
{
StrBuf *FreeMe = (StrBuf*)VFreeMe;
free(FreeMe);
}
+/**
+ * \brief Wrapper around atol
+ */
long StrTol(const StrBuf *Buf)
{
+ if (Buf == NULL)
+ return 0;
if(Buf->BufUsed > 0)
return atol(Buf->buf);
else
return 0;
}
+/**
+ * \brief Wrapper around atoi
+ */
int StrToi(const StrBuf *Buf)
{
- if(Buf->BufUsed > 0)
+ if (Buf == NULL)
+ return 0;
+ if (Buf->BufUsed > 0)
return atoi(Buf->buf);
else
return 0;
}
-
-int StrBufPlain(StrBuf *Buf, const char* ptr, int nChars)
+/**
+ * \brief Checks to see if the string is a pure number
+ */
+int StrBufIsNumber(const StrBuf *Buf) {
+ if (Buf == NULL) {
+ return 0;
+ }
+ char * pEnd;
+ strtoll(Buf->buf, &pEnd, 10);
+ if (pEnd == NULL && ((Buf->buf)-pEnd) != 0) {
+ return 1;
+ }
+ return 0;
+}
+/**
+ * \brief modifies a Single char of the Buf
+ * You can point to it via char* or a zero-based integer
+ * \param ptr char* to zero; use NULL if unused
+ * \param nThChar zero based pointer into the string; use -1 if unused
+ * \param PeekValue The Character to place into the position
+ */
+long StrBufPeek(StrBuf *Buf, const char* ptr, long nThChar, char PeekValue)
{
- size_t Siz = Buf->BufSize;
- size_t CopySize;
-
- if (nChars < 0)
- CopySize = strlen(ptr);
- else
- CopySize = nChars;
-
- while (Siz <= CopySize)
- Siz *= 2;
-
- if (Siz != Buf->BufSize)
- IncreaseBuf(Buf, 0, Siz);
- memcpy(Buf->buf, ptr, CopySize);
- Buf->buf[CopySize] = '\0';
- Buf->BufUsed = CopySize;
- Buf->ConstBuf = 0;
- return CopySize;
+ if (Buf == NULL)
+ return -1;
+ if (ptr != NULL)
+ nThChar = ptr - Buf->buf;
+ if ((nThChar < 0) || (nThChar > Buf->BufUsed))
+ return -1;
+ Buf->buf[nThChar] = PeekValue;
+ return nThChar;
}
-void StrBufAppendBuf(StrBuf *Buf, const StrBuf *AppendBuf, size_t Offset)
+/**
+ * \brief Append a StringBuffer to the buffer
+ * \param Buf Buffer to modify
+ * \param AppendBuf Buffer to copy at the end of our buffer
+ * \param Offset Should we start copying from an offset?
+ */
+void StrBufAppendBuf(StrBuf *Buf, const StrBuf *AppendBuf, unsigned long Offset)
{
- if ((AppendBuf == NULL) || (Buf == NULL))
+ if ((AppendBuf == NULL) || (Buf == NULL) || (AppendBuf->buf == NULL))
return;
- if (Buf->BufSize - Offset < AppendBuf->BufUsed + Buf->BufUsed)
+ if (Buf->BufSize - Offset < AppendBuf->BufUsed + Buf->BufUsed + 1)
IncreaseBuf(Buf,
(Buf->BufUsed > 0),
AppendBuf->BufUsed + Buf->BufUsed);
}
-void StrBufAppendBufPlain(StrBuf *Buf, const char *AppendBuf, long AppendSize, size_t Offset)
+/**
+ * \brief Append a C-String to the buffer
+ * \param Buf Buffer to modify
+ * \param AppendBuf Buffer to copy at the end of our buffer
+ * \param AppendSize number of bytes to copy; set to -1 if we should count it in advance
+ * \param Offset Should we start copying from an offset?
+ */
+void StrBufAppendBufPlain(StrBuf *Buf, const char *AppendBuf, long AppendSize, unsigned long Offset)
{
long aps;
+ long BufSizeRequired;
if ((AppendBuf == NULL) || (Buf == NULL))
return;
else
aps = AppendSize - Offset;
- if (Buf->BufSize < Buf->BufUsed + aps)
- IncreaseBuf(Buf, (Buf->BufUsed > 0), Buf->BufUsed + aps);
+ BufSizeRequired = Buf->BufUsed + aps + 1;
+ if (Buf->BufSize <= BufSizeRequired)
+ IncreaseBuf(Buf, (Buf->BufUsed > 0), BufSizeRequired);
memcpy(Buf->buf + Buf->BufUsed,
AppendBuf + Offset,
}
-inline int StrBufNum_tokens(const StrBuf *source, char tok)
+/**
+ * \brief Escape a string for feeding out as a URL while appending it to a Buffer
+ * \param outbuf the output buffer
+ * \param oblen the size of outbuf to sanitize
+ * \param strbuf the input buffer
+ */
+void StrBufUrlescAppend(StrBuf *OutBuf, const StrBuf *In, const char *PlainIn)
{
- return num_tokens(source->buf, tok);
+ const char *pch, *pche;
+ char *pt, *pte;
+ int b, c, len;
+ const char ec[] = " +#&;`'|*?-~<>^()[]{}/$\"\\";
+ int eclen = sizeof(ec) -1;
+
+ if (((In == NULL) && (PlainIn == NULL)) || (OutBuf == NULL) )
+ return;
+ if (PlainIn != NULL) {
+ len = strlen(PlainIn);
+ pch = PlainIn;
+ pche = pch + len;
+ }
+ else {
+ pch = In->buf;
+ pche = pch + In->BufUsed;
+ len = In->BufUsed;
+ }
+
+ if (len == 0)
+ return;
+
+ pt = OutBuf->buf + OutBuf->BufUsed;
+ pte = OutBuf->buf + OutBuf->BufSize - 4; /**< we max append 3 chars at once plus the \0 */
+
+ while (pch < pche) {
+ if (pt >= pte) {
+ IncreaseBuf(OutBuf, 1, -1);
+ pte = OutBuf->buf + OutBuf->BufSize - 4; /**< we max append 3 chars at once plus the \0 */
+ pt = OutBuf->buf + OutBuf->BufUsed;
+ }
+
+ c = 0;
+ for (b = 0; b < eclen; ++b) {
+ if (*pch == ec[b]) {
+ c = 1;
+ b += eclen;
+ }
+ }
+ if (c == 1) {
+ sprintf(pt,"%%%02X", *pch);
+ pt += 3;
+ OutBuf->BufUsed += 3;
+ pch ++;
+ }
+ else {
+ *(pt++) = *(pch++);
+ OutBuf->BufUsed++;
+ }
+ }
+ *pt = '\0';
+}
+
+/*
+ * \brief Append a string, escaping characters which have meaning in HTML.
+ *
+ * \param Target target buffer
+ * \param Source source buffer; set to NULL if you just have a C-String
+ * \param PlainIn Plain-C string to append; set to NULL if unused
+ * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
+ * \param nolinebreaks if set to 1, linebreaks are removed from the string.
+ * if set to 2, linebreaks are replaced by <br/>
+ */
+long StrEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn, int nbsp, int nolinebreaks)
+{
+ const char *aptr, *eiptr;
+ char *bptr, *eptr;
+ long len;
+
+ if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
+ return -1;
+
+ if (PlainIn != NULL) {
+ aptr = PlainIn;
+ len = strlen(PlainIn);
+ eiptr = aptr + len;
+ }
+ else {
+ aptr = Source->buf;
+ eiptr = aptr + Source->BufUsed;
+ len = Source->BufUsed;
+ }
+
+ if (len == 0)
+ return -1;
+
+ bptr = Target->buf + Target->BufUsed;
+ eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
+
+ while (aptr < eiptr){
+ if(bptr >= eptr) {
+ IncreaseBuf(Target, 1, -1);
+ eptr = Target->buf + Target->BufSize - 11; /* our biggest unit to put in... */
+ bptr = Target->buf + Target->BufUsed;
+ }
+ if (*aptr == '<') {
+ memcpy(bptr, "<", 4);
+ bptr += 4;
+ Target->BufUsed += 4;
+ }
+ else if (*aptr == '>') {
+ memcpy(bptr, ">", 4);
+ bptr += 4;
+ Target->BufUsed += 4;
+ }
+ else if (*aptr == '&') {
+ memcpy(bptr, "&", 5);
+ bptr += 5;
+ Target->BufUsed += 5;
+ }
+ else if (*aptr == '"') {
+ memcpy(bptr, """, 6);
+ bptr += 6;
+ Target->BufUsed += 6;
+ }
+ else if (*aptr == '\'') {
+ memcpy(bptr, "'", 5);
+ bptr += 5;
+ Target->BufUsed += 5;
+ }
+ else if (*aptr == LB) {
+ *bptr = '<';
+ bptr ++;
+ Target->BufUsed ++;
+ }
+ else if (*aptr == RB) {
+ *bptr = '>';
+ bptr ++;
+ Target->BufUsed ++;
+ }
+ else if (*aptr == QU) {
+ *bptr ='"';
+ bptr ++;
+ Target->BufUsed ++;
+ }
+ else if ((*aptr == 32) && (nbsp == 1)) {
+ memcpy(bptr, " ", 6);
+ bptr += 6;
+ Target->BufUsed += 6;
+ }
+ else if ((*aptr == '\n') && (nolinebreaks == 1)) {
+ *bptr='\0'; /* nothing */
+ }
+ else if ((*aptr == '\n') && (nolinebreaks == 2)) {
+ memcpy(bptr, "<br/>", 11);
+ bptr += 11;
+ Target->BufUsed += 11;
+ }
+
+
+ else if ((*aptr == '\r') && (nolinebreaks != 0)) {
+ *bptr='\0'; /* nothing */
+ }
+ else{
+ *bptr = *aptr;
+ bptr++;
+ Target->BufUsed ++;
+ }
+ aptr ++;
+ }
+ *bptr = '\0';
+ if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
+ return -1;
+ return Target->BufUsed;
+}
+
+/*
+ * \brief Append a string, escaping characters which have meaning in HTML.
+ * Converts linebreaks into blanks; escapes single quotes
+ * \param Target target buffer
+ * \param Source source buffer; set to NULL if you just have a C-String
+ * \param PlainIn Plain-C string to append; set to NULL if unused
+ */
+void StrMsgEscAppend(StrBuf *Target, StrBuf *Source, const char *PlainIn)
+{
+ const char *aptr, *eiptr;
+ char *tptr, *eptr;
+ long len;
+
+ if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
+ return ;
+
+ if (PlainIn != NULL) {
+ aptr = PlainIn;
+ len = strlen(PlainIn);
+ eiptr = aptr + len;
+ }
+ else {
+ aptr = Source->buf;
+ eiptr = aptr + Source->BufUsed;
+ len = Source->BufUsed;
+ }
+
+ if (len == 0)
+ return;
+
+ eptr = Target->buf + Target->BufSize - 8;
+ tptr = Target->buf + Target->BufUsed;
+
+ while (aptr < eiptr){
+ if(tptr >= eptr) {
+ IncreaseBuf(Target, 1, -1);
+ eptr = Target->buf + Target->BufSize - 8;
+ tptr = Target->buf + Target->BufUsed;
+ }
+
+ if (*aptr == '\n') {
+ *tptr = ' ';
+ Target->BufUsed++;
+ }
+ else if (*aptr == '\r') {
+ *tptr = ' ';
+ Target->BufUsed++;
+ }
+ else if (*aptr == '\'') {
+ *(tptr++) = '&';
+ *(tptr++) = '#';
+ *(tptr++) = '3';
+ *(tptr++) = '9';
+ *tptr = ';';
+ Target->BufUsed += 5;
+ } else {
+ *tptr = *aptr;
+ Target->BufUsed++;
+ }
+ tptr++; aptr++;
+ }
+ *tptr = '\0';
}
+/*
+ * \brief Append a string, escaping characters which have meaning in JavaScript strings .
+ *
+ * \param Target target buffer
+ * \param Source source buffer; set to NULL if you just have a C-String
+ * \param PlainIn Plain-C string to append; set to NULL if unused
+ */
+long StrECMAEscAppend(StrBuf *Target, const StrBuf *Source, const char *PlainIn)
+{
+ const char *aptr, *eiptr;
+ char *bptr, *eptr;
+ long len;
+
+ if (((Source == NULL) && (PlainIn == NULL)) || (Target == NULL) )
+ return -1;
+
+ if (PlainIn != NULL) {
+ aptr = PlainIn;
+ len = strlen(PlainIn);
+ eiptr = aptr + len;
+ }
+ else {
+ aptr = Source->buf;
+ eiptr = aptr + Source->BufUsed;
+ len = Source->BufUsed;
+ }
+
+ if (len == 0)
+ return -1;
+
+ bptr = Target->buf + Target->BufUsed;
+ eptr = Target->buf + Target->BufSize - 3; /* our biggest unit to put in... */
-int StrBufSub(StrBuf *dest, const StrBuf *Source, size_t Offset, size_t nChars)
+ while (aptr < eiptr){
+ if(bptr >= eptr) {
+ IncreaseBuf(Target, 1, -1);
+ eptr = Target->buf + Target->BufSize - 3;
+ bptr = Target->buf + Target->BufUsed;
+ }
+ else if (*aptr == '"') {
+ memcpy(bptr, "\\\"", 2);
+ bptr += 2;
+ Target->BufUsed += 2;
+ } else if (*aptr == '\\') {
+ memcpy(bptr, "\\\\", 2);
+ bptr += 2;
+ Target->BufUsed += 2;
+ }
+ else{
+ *bptr = *aptr;
+ bptr++;
+ Target->BufUsed ++;
+ }
+ aptr ++;
+ }
+ *bptr = '\0';
+ if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
+ return -1;
+ return Target->BufUsed;
+}
+
+/**
+ * \brief extracts a substring from Source into dest
+ * \param dest buffer to place substring into
+ * \param Source string to copy substring from
+ * \param Offset chars to skip from start
+ * \param nChars number of chars to copy
+ * \returns the number of chars copied; may be different from nChars due to the size of Source
+ */
+int StrBufSub(StrBuf *dest, const StrBuf *Source, unsigned long Offset, size_t nChars)
{
size_t NCharsRemain;
if (Offset > Source->BufUsed)
}
if (Offset + nChars < Source->BufUsed)
{
- if (nChars > dest->BufSize)
+ if (nChars >= dest->BufSize)
IncreaseBuf(dest, 0, nChars + 1);
memcpy(dest->buf, Source->buf + Offset, nChars);
dest->BufUsed = nChars;
return nChars;
}
NCharsRemain = Source->BufUsed - Offset;
- if (NCharsRemain > dest->BufSize)
+ if (NCharsRemain >= dest->BufSize)
IncreaseBuf(dest, 0, NCharsRemain + 1);
memcpy(dest->buf, Source->buf + Offset, NCharsRemain);
dest->BufUsed = NCharsRemain;
return NCharsRemain;
}
-
+/**
+ * \brief sprintf like function appending the formated string to the buffer
+ * vsnprintf version to wrap into own calls
+ * \param Buf Buffer to extend by format and params
+ * \param format printf alike format to add
+ * \param ap va_list containing the items for format
+ */
void StrBufVAppendPrintf(StrBuf *Buf, const char *format, va_list ap)
{
+ va_list apl;
+ size_t BufSize = Buf->BufSize;
size_t nWritten = Buf->BufSize + 1;
size_t Offset = Buf->BufUsed;
size_t newused = Offset + nWritten;
- while (newused >= Buf->BufSize) {
+ while (newused >= BufSize) {
+ va_copy(apl, ap);
nWritten = vsnprintf(Buf->buf + Offset,
Buf->BufSize - Offset,
- format, ap);
+ format, apl);
+ va_end(apl);
newused = Offset + nWritten;
- if (newused >= Buf->BufSize)
- IncreaseBuf(Buf, 1, 0);
- else
- Buf->BufUsed = Offset + nWritten ;
+ if (newused >= Buf->BufSize) {
+ IncreaseBuf(Buf, 1, newused);
+ }
+ else {
+ Buf->BufUsed = Offset + nWritten;
+ BufSize = Buf->BufSize;
+ }
+
+ }
+}
+
+/**
+ * \brief sprintf like function appending the formated string to the buffer
+ * \param Buf Buffer to extend by format and params
+ * \param format printf alike format to add
+ * \param ap va_list containing the items for format
+ */
+void StrBufAppendPrintf(StrBuf *Buf, const char *format, ...)
+{
+ size_t BufSize = Buf->BufSize;
+ size_t nWritten = Buf->BufSize + 1;
+ size_t Offset = Buf->BufUsed;
+ size_t newused = Offset + nWritten;
+ va_list arg_ptr;
+
+ while (newused >= BufSize) {
+ va_start(arg_ptr, format);
+ nWritten = vsnprintf(Buf->buf + Buf->BufUsed,
+ Buf->BufSize - Buf->BufUsed,
+ format, arg_ptr);
+ va_end(arg_ptr);
+ newused = Buf->BufUsed + nWritten;
+ if (newused >= Buf->BufSize) {
+ IncreaseBuf(Buf, 1, newused);
+ }
+ else {
+ Buf->BufUsed += nWritten;
+ BufSize = Buf->BufSize;
+ }
}
}
+/**
+ * \brief sprintf like function putting the formated string into the buffer
+ * \param Buf Buffer to extend by format and params
+ * \param format printf alike format to add
+ * \param ap va_list containing the items for format
+ */
void StrBufPrintf(StrBuf *Buf, const char *format, ...)
{
size_t nWritten = Buf->BufSize + 1;
}
+/**
+ * \brief Counts the numbmer of tokens in a buffer
+ * \param Source String to count tokens in
+ * \param tok Tokenizer char to count
+ * \returns numbers of tokenizer chars found
+ */
+inline int StrBufNum_tokens(const StrBuf *source, char tok)
+{
+ if (source == NULL)
+ return 0;
+ return num_tokens(source->buf, tok);
+}
+
+/*
+ * remove_token() - a tokenizer that kills, maims, and destroys
+ */
+/**
+ * \brief a string tokenizer
+ * \param Source StringBuffer to read into
+ * \param parmnum n'th parameter to remove
+ * \param separator tokenizer param
+ * \returns -1 if not found, else length of token.
+ */
+int StrBufRemove_token(StrBuf *Source, int parmnum, char separator)
+{
+ int ReducedBy;
+ char *d, *s; /* dest, source */
+ int count = 0;
+
+ /* Find desired parameter */
+ d = Source->buf;
+ while (count < parmnum) {
+ /* End of string, bail! */
+ if (!*d) {
+ d = NULL;
+ break;
+ }
+ if (*d == separator) {
+ count++;
+ }
+ d++;
+ }
+ if (!d) return 0; /* Parameter not found */
+
+ /* Find next parameter */
+ s = d;
+ while (*s && *s != separator) {
+ s++;
+ }
+ if (*s == separator)
+ s++;
+ ReducedBy = d - s;
+
+ /* Hack and slash */
+ if (*s) {
+ memmove(d, s, Source->BufUsed - (s - Source->buf) + 1);
+ Source->BufUsed -= (ReducedBy + 1);
+ }
+ else if (d == Source->buf) {
+ *d = 0;
+ Source->BufUsed = 0;
+ }
+ else {
+ *--d = 0;
+ Source->BufUsed -= (ReducedBy + 1);
+ }
+ /*
+ while (*s) {
+ *d++ = *s++;
+ }
+ *d = 0;
+ */
+ return ReducedBy;
+}
+
+
+/**
+ * \brief a string tokenizer
+ * \param dest Destination StringBuffer
+ * \param Source StringBuffer to read into
+ * \param parmnum n'th parameter to extract
+ * \param separator tokenizer param
+ * \returns -1 if not found, else length of token.
+ */
+int StrBufExtract_token(StrBuf *dest, const StrBuf *Source, int parmnum, char separator)
+{
+ const char *s, *e; //* source * /
+ int len = 0; //* running total length of extracted string * /
+ int current_token = 0; //* token currently being processed * /
+
+ if (dest != NULL) {
+ dest->buf[0] = '\0';
+ dest->BufUsed = 0;
+ }
+ else
+ return(-1);
+
+ if ((Source == NULL) || (Source->BufUsed ==0)) {
+ return(-1);
+ }
+ s = Source->buf;
+ e = s + Source->BufUsed;
+
+ //cit_backtrace();
+ //lprintf (CTDL_DEBUG, "test >: n: %d sep: %c source: %s \n willi \n", parmnum, separator, source);
+
+ while ((s<e) && !IsEmptyStr(s)) {
+ if (*s == separator) {
+ ++current_token;
+ }
+ if (len >= dest->BufSize)
+ if (!IncreaseBuf(dest, 1, -1))
+ break;
+ if ( (current_token == parmnum) &&
+ (*s != separator)) {
+ dest->buf[len] = *s;
+ ++len;
+ }
+ else if (current_token > parmnum) {
+ break;
+ }
+ ++s;
+ }
+
+ dest->buf[len] = '\0';
+ dest->BufUsed = len;
+
+ if (current_token < parmnum) {
+ //lprintf (CTDL_DEBUG,"test <!: %s\n", dest);
+ return(-1);
+ }
+ //lprintf (CTDL_DEBUG,"test <: %d; %s\n", len, dest);
+ return(len);
+}
+
+
+
+
+
+/**
+ * \brief a string tokenizer to fetch an integer
+ * \param dest Destination StringBuffer
+ * \param parmnum n'th parameter to extract
+ * \param separator tokenizer param
+ * \returns 0 if not found, else integer representation of the token
+ */
+int StrBufExtract_int(const StrBuf* Source, int parmnum, char separator)
+{
+ StrBuf tmp;
+ char buf[64];
+
+ tmp.buf = buf;
+ buf[0] = '\0';
+ tmp.BufSize = 64;
+ tmp.BufUsed = 0;
+ tmp.ConstBuf = 1;
+ if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
+ return(atoi(buf));
+ else
+ return 0;
+}
+
+/**
+ * \brief a string tokenizer to fetch a long integer
+ * \param dest Destination StringBuffer
+ * \param parmnum n'th parameter to extract
+ * \param separator tokenizer param
+ * \returns 0 if not found, else long integer representation of the token
+ */
+long StrBufExtract_long(const StrBuf* Source, int parmnum, char separator)
+{
+ StrBuf tmp;
+ char buf[64];
+
+ tmp.buf = buf;
+ buf[0] = '\0';
+ tmp.BufSize = 64;
+ tmp.BufUsed = 0;
+ tmp.ConstBuf = 1;
+ if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
+ return(atoi(buf));
+ else
+ return 0;
+}
+
+
+/**
+ * \brief a string tokenizer to fetch an unsigned long
+ * \param dest Destination StringBuffer
+ * \param parmnum n'th parameter to extract
+ * \param separator tokenizer param
+ * \returns 0 if not found, else unsigned long representation of the token
+ */
+unsigned long StrBufExtract_unsigned_long(const StrBuf* Source, int parmnum, char separator)
+{
+ StrBuf tmp;
+ char buf[64];
+ char *pnum;
+
+ tmp.buf = buf;
+ buf[0] = '\0';
+ tmp.BufSize = 64;
+ tmp.BufUsed = 0;
+ tmp.ConstBuf = 1;
+ if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0) {
+ pnum = &buf[0];
+ if (*pnum == '-')
+ pnum ++;
+ return (unsigned long) atol(pnum);
+ }
+ else
+ return 0;
+}
+
+
+
/**
* \brief a string tokenizer
* \param dest Destination StringBuffer
* \param Source StringBuffer to read into
+ * \param pStart pointer to the end of the last token. Feed with NULL.
* \param separator tokenizer param
* \returns -1 if not found, else length of token.
*/
-int StrBufExtract_token(StrBuf *dest, const StrBuf *Source, int parmnum, char separator)
+int StrBufExtract_NextToken(StrBuf *dest, const StrBuf *Source, const char **pStart, char separator)
{
- const char *s, *e; //* source * /
+ const char *s, *EndBuffer; //* source * /
int len = 0; //* running total length of extracted string * /
int current_token = 0; //* token currently being processed * /
+
+ if (dest != NULL) {
+ dest->buf[0] = '\0';
+ dest->BufUsed = 0;
+ }
+ else
+ return(-1);
- if ((Source == NULL) || (Source->BufUsed ==0)) {
+ if ((Source == NULL) ||
+ (Source->BufUsed ==0)) {
return(-1);
}
- s = Source->buf;
- e = s + Source->BufUsed;
- if (dest == NULL) {
- return(-1);
+ if (*pStart == NULL)
+ *pStart = Source->buf;
+
+ EndBuffer = Source->buf + Source->BufUsed;
+
+ if ((*pStart < Source->buf) ||
+ (*pStart > EndBuffer)) {
+ return (-1);
}
+
+ s = *pStart;
+
//cit_backtrace();
//lprintf (CTDL_DEBUG, "test >: n: %d sep: %c source: %s \n willi \n", parmnum, separator, source);
- dest->buf[0] = '\0';
- dest->BufUsed = 0;
- while ((s<e) && !IsEmptyStr(s)) {
+ while ((s<EndBuffer) && !IsEmptyStr(s)) {
if (*s == separator) {
++current_token;
}
if (len >= dest->BufSize)
- if (!IncreaseBuf(dest, 1, -1))
+ if (!IncreaseBuf(dest, 1, -1)) {
+ *pStart = EndBuffer + 1;
break;
- if ( (current_token == parmnum) &&
+ }
+ if ( (current_token == 0) &&
(*s != separator)) {
dest->buf[len] = *s;
++len;
}
- else if (current_token > parmnum) {
+ else if (current_token > 0) {
+ *pStart = s;
break;
}
++s;
}
-
+ *pStart = s;
+ (*pStart) ++;
+
dest->buf[len] = '\0';
dest->BufUsed = len;
-
- if (current_token < parmnum) {
//lprintf (CTDL_DEBUG,"test <!: %s\n", dest);
- return(-1);
- }
//lprintf (CTDL_DEBUG,"test <: %d; %s\n", len, dest);
return(len);
}
-/*
- * extract_int() - extract an int parm w/o supplying a buffer
+/**
+ * \brief a string tokenizer
+ * \param dest Destination StringBuffer
+ * \param Source StringBuffer to read into
+ * \param pStart pointer to the end of the last token. Feed with NULL.
+ * \param separator tokenizer param
+ * \returns -1 if not found, else length of token.
*/
-int StrBufExtract_int(const StrBuf* Source, int parmnum, char separator)
+int StrBufSkip_NTokenS(const StrBuf *Source, const char **pStart, char separator, int nTokens)
+{
+ const char *s, *EndBuffer; //* source * /
+ int len = 0; //* running total length of extracted string * /
+ int current_token = 0; //* token currently being processed * /
+
+ if ((Source == NULL) ||
+ (Source->BufUsed ==0)) {
+ return(-1);
+ }
+ if (nTokens == 0)
+ return Source->BufUsed;
+
+ if (*pStart == NULL)
+ *pStart = Source->buf;
+
+ EndBuffer = Source->buf + Source->BufUsed;
+
+ if ((*pStart < Source->buf) ||
+ (*pStart > EndBuffer)) {
+ return (-1);
+ }
+
+
+ s = *pStart;
+
+ //cit_backtrace();
+ //lprintf (CTDL_DEBUG, "test >: n: %d sep: %c source: %s \n willi \n", parmnum, separator, source);
+
+ while ((s<EndBuffer) && !IsEmptyStr(s)) {
+ if (*s == separator) {
+ ++current_token;
+ }
+ if (current_token >= nTokens) {
+ break;
+ }
+ ++s;
+ }
+ *pStart = s;
+ (*pStart) ++;
+
+ return(len);
+}
+
+/**
+ * \brief a string tokenizer to fetch an integer
+ * \param dest Destination StringBuffer
+ * \param parmnum n'th parameter to extract
+ * \param separator tokenizer param
+ * \returns 0 if not found, else integer representation of the token
+ */
+int StrBufExtractNext_int(const StrBuf* Source, const char **pStart, char separator)
{
StrBuf tmp;
char buf[64];
buf[0] = '\0';
tmp.BufSize = 64;
tmp.BufUsed = 0;
- if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
+ tmp.ConstBuf = 1;
+ if (StrBufExtract_NextToken(&tmp, Source, pStart, separator) > 0)
return(atoi(buf));
else
return 0;
}
-/*
- * extract_long() - extract an long parm w/o supplying a buffer
+/**
+ * \brief a string tokenizer to fetch a long integer
+ * \param dest Destination StringBuffer
+ * \param parmnum n'th parameter to extract
+ * \param separator tokenizer param
+ * \returns 0 if not found, else long integer representation of the token
*/
-long StrBufExtract_long(const StrBuf* Source, int parmnum, char separator)
+long StrBufExtractNext_long(const StrBuf* Source, const char **pStart, char separator)
{
StrBuf tmp;
char buf[64];
buf[0] = '\0';
tmp.BufSize = 64;
tmp.BufUsed = 0;
- if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
+ tmp.ConstBuf = 1;
+ if (StrBufExtract_NextToken(&tmp, Source, pStart, separator) > 0)
return(atoi(buf));
else
return 0;
}
-/*
- * extract_unsigned_long() - extract an unsigned long parm
+/**
+ * \brief a string tokenizer to fetch an unsigned long
+ * \param dest Destination StringBuffer
+ * \param parmnum n'th parameter to extract
+ * \param separator tokenizer param
+ * \returns 0 if not found, else unsigned long representation of the token
*/
-unsigned long StrBufExtract_unsigned_long(const StrBuf* Source, int parmnum, char separator)
+unsigned long StrBufExtractNext_unsigned_long(const StrBuf* Source, const char **pStart, char separator)
{
StrBuf tmp;
char buf[64];
+ char *pnum;
tmp.buf = buf;
buf[0] = '\0';
tmp.BufSize = 64;
tmp.BufUsed = 0;
- if (StrBufExtract_token(&tmp, Source, parmnum, separator) > 0)
- return(atoi(buf));
+ tmp.ConstBuf = 1;
+ if (StrBufExtract_NextToken(&tmp, Source, pStart, separator) > 0) {
+ pnum = &buf[0];
+ if (*pnum == '-')
+ pnum ++;
+ return (unsigned long) atol(pnum);
+ }
else
return 0;
}
/**
- * \brief Input binary data from socket
+ * \brief Read a line from socket
+ * flushes and closes the FD on error
* \param buf the buffer to get the input to
- * \param bytes the maximal number of bytes to read
+ * \param fd pointer to the filedescriptor to read
+ * \param append Append to an existing string or replace?
+ * \param Error strerror() on error
+ * \returns numbers of chars read
*/
int StrBufTCP_read_line(StrBuf *buf, int *fd, int append, const char **Error)
{
break;
if (buf->buf[len] != '\r')
len ++;
- if (!(len < buf->BufSize)) {
+ if (len >= buf->BufSize) {
buf->BufUsed = len;
buf->buf[len+1] = '\0';
IncreaseBuf(buf, 1, -1);
return len - slen;
}
+/**
+ * \brief Read a line from socket
+ * flushes and closes the FD on error
+ * \param buf the buffer to get the input to
+ * \param fd pointer to the filedescriptor to read
+ * \param append Append to an existing string or replace?
+ * \param Error strerror() on error
+ * \returns numbers of chars read
+ */
+int StrBufTCP_read_buffered_line(StrBuf *Line,
+ StrBuf *buf,
+ int *fd,
+ int timeout,
+ int selectresolution,
+ const char **Error)
+{
+ int len, rlen;
+ int nSuccessLess = 0;
+ fd_set rfds;
+ char *pch = NULL;
+ int fdflags;
+ struct timeval tv;
+
+ if (buf->BufUsed > 0) {
+ pch = strchr(buf->buf, '\n');
+ if (pch != NULL) {
+ rlen = 0;
+ len = pch - buf->buf;
+ if (len > 0 && (*(pch - 1) == '\r') )
+ rlen ++;
+ StrBufSub(Line, buf, 0, len - rlen);
+ StrBufCutLeft(buf, len + 1);
+ return len - rlen;
+ }
+ }
+
+ if (buf->BufSize - buf->BufUsed < 10)
+ IncreaseBuf(buf, 1, -1);
+
+ fdflags = fcntl(*fd, F_GETFL);
+ if ((fdflags & O_NONBLOCK) == O_NONBLOCK)
+ return -1;
+
+ while ((nSuccessLess < timeout) && (pch == NULL)) {
+ tv.tv_sec = selectresolution;
+ tv.tv_usec = 0;
+
+ FD_ZERO(&rfds);
+ FD_SET(*fd, &rfds);
+ if (select(*fd + 1, NULL, &rfds, NULL, &tv) == -1) {
+ *Error = strerror(errno);
+ close (*fd);
+ *fd = -1;
+ return -1;
+ }
+ if (FD_ISSET(*fd, &rfds)) {
+ rlen = read(*fd,
+ &buf->buf[buf->BufUsed],
+ buf->BufSize - buf->BufUsed - 1);
+ if (rlen < 1) {
+ *Error = strerror(errno);
+ close(*fd);
+ *fd = -1;
+ return -1;
+ }
+ else if (rlen > 0) {
+ nSuccessLess = 0;
+ buf->BufUsed += rlen;
+ buf->buf[buf->BufUsed] = '\0';
+ if (buf->BufUsed + 10 > buf->BufSize) {
+ IncreaseBuf(buf, 1, -1);
+ }
+ pch = strchr(buf->buf, '\n');
+ continue;
+ }
+ }
+ nSuccessLess ++;
+ }
+ if (pch != NULL) {
+ rlen = 0;
+ len = pch - buf->buf;
+ if (len > 0 && (*(pch - 1) == '\r') )
+ rlen ++;
+ StrBufSub(Line, buf, 0, len - rlen);
+ StrBufCutLeft(buf, len + 1);
+ return len - rlen;
+ }
+ return -1;
+
+}
+
/**
* \brief Input binary data from socket
+ * flushes and closes the FD on error
* \param buf the buffer to get the input to
- * \param bytes the maximal number of bytes to read
+ * \param fd pointer to the filedescriptor to read
+ * \param append Append to an existing string or replace?
+ * \param nBytes the maximal number of bytes to read
+ * \param Error strerror() on error
+ * \returns numbers of chars read
*/
int StrBufReadBLOB(StrBuf *Buf, int *fd, int append, long nBytes, const char **Error)
{
return -1;
if (!append)
FlushStrBuf(Buf);
- if (Buf->BufUsed + nBytes > Buf->BufSize)
+ if (Buf->BufUsed + nBytes >= Buf->BufSize)
IncreaseBuf(Buf, 1, Buf->BufUsed + nBytes);
ptr = Buf->buf + Buf->BufUsed;
return rlen;
}
nRead += rlen;
+ ptr += rlen;
Buf->BufUsed += rlen;
}
Buf->buf[Buf->BufUsed] = '\0';
return nRead;
}
+/**
+ * \brief Cut nChars from the start of the string
+ * \param Buf Buffer to modify
+ * \param nChars how many chars should be skipped?
+ */
void StrBufCutLeft(StrBuf *Buf, int nChars)
{
if (nChars >= Buf->BufUsed) {
Buf->buf[Buf->BufUsed] = '\0';
}
+/**
+ * \brief Cut the trailing n Chars from the string
+ * \param Buf Buffer to modify
+ * \param nChars how many chars should be trunkated?
+ */
void StrBufCutRight(StrBuf *Buf, int nChars)
{
if (nChars >= Buf->BufUsed) {
Buf->buf[Buf->BufUsed] = '\0';
}
+/**
+ * \brief Cut the string after n Chars
+ * \param Buf Buffer to modify
+ * \param AfternChars after how many chars should we trunkate the string?
+ * \param At if non-null and points inside of our string, cut it there.
+ */
+void StrBufCutAt(StrBuf *Buf, int AfternChars, const char *At)
+{
+ if (At != NULL){
+ AfternChars = At - Buf->buf;
+ }
+
+ if ((AfternChars < 0) || (AfternChars >= Buf->BufUsed))
+ return;
+ Buf->BufUsed = AfternChars;
+ Buf->buf[Buf->BufUsed] = '\0';
+}
+
/*
- * string conversion function
+ * Strip leading and trailing spaces from a string; with premeasured and adjusted length.
+ * buf - the string to modify
+ * len - length of the string.
+ */
+void StrBufTrim(StrBuf *Buf)
+{
+ int delta = 0;
+ if ((Buf == NULL) || (Buf->BufUsed == 0)) return;
+
+ while ((Buf->BufUsed > delta) && (isspace(Buf->buf[delta]))){
+ delta ++;
+ }
+ if (delta > 0) StrBufCutLeft(Buf, delta);
+
+ if (Buf->BufUsed == 0) return;
+ while (isspace(Buf->buf[Buf->BufUsed - 1])){
+ Buf->BufUsed --;
+ }
+ Buf->buf[Buf->BufUsed] = '\0';
+}
+
+
+void StrBufUpCase(StrBuf *Buf)
+{
+ char *pch, *pche;
+
+ pch = Buf->buf;
+ pche = pch + Buf->BufUsed;
+ while (pch < pche) {
+ *pch = toupper(*pch);
+ pch ++;
+ }
+}
+
+
+void StrBufLowerCase(StrBuf *Buf)
+{
+ char *pch, *pche;
+
+ pch = Buf->buf;
+ pche = pch + Buf->BufUsed;
+ while (pch < pche) {
+ *pch = tolower(*pch);
+ pch ++;
+ }
+}
+
+
+/**
+ * \brief unhide special chars hidden to the HTML escaper
+ * \param target buffer to put the unescaped string in
+ * \param source buffer to unescape
*/
void StrBufEUid_unescapize(StrBuf *target, const StrBuf *source)
{
}
-/*
- * string conversion function
+/**
+ * \brief hide special chars from the HTML escapers and friends
+ * \param target buffer to put the escaped string in
+ * \param source buffer to escape
*/
void StrBufEUid_escapize(StrBuf *target, const StrBuf *source)
{
#ifdef HAVE_ZLIB
char *compressed_data = NULL;
size_t compressed_len, bufsize;
+ int i = 0;
bufsize = compressed_len = ((Buf->BufUsed * 101) / 100) + 100;
compressed_data = malloc(compressed_len);
+ /* Flush some space after the used payload so valgrind shuts up... */
+ while ((i < 10) && (Buf->BufUsed + i < Buf->BufSize))
+ Buf->buf[Buf->BufUsed + i++] = '\0';
if (compress_gzip((Bytef *) compressed_data,
&compressed_len,
(Bytef *) Buf->buf,
(uLongf) Buf->BufUsed, Z_BEST_SPEED) == Z_OK) {
- if (!ConstBuf)
+ if (!Buf->ConstBuf)
free(Buf->buf);
Buf->buf = compressed_data;
Buf->BufUsed = compressed_len;
Buf->BufSize = bufsize;
+ /* Flush some space after the used payload so valgrind shuts up... */
+ i = 0;
+ while ((i < 10) && (Buf->BufUsed + i < Buf->BufSize))
+ Buf->buf[Buf->BufUsed + i++] = '\0';
return 1;
} else {
free(compressed_data);
return 0;
}
+/**
+ * \brief decode a buffer from base 64 encoding; destroys original
+ * \param Buf Buffor to transform
+ */
int StrBufDecodeBase64(StrBuf *Buf)
{
char *xferbuf;
return siz;
}
+/**
+ * \brief replace all chars >0x20 && < 0x7F with Mute
+ * \param Mute char to put over invalid chars
+ * \param Buf Buffor to transform
+ */
+int StrBufSanitizeAscii(StrBuf *Buf, const char Mute)
+{
+ unsigned char *pch;
+
+ if (Buf == NULL) return -1;
+ pch = (unsigned char *)Buf->buf;
+ while (pch < (unsigned char *)Buf->buf + Buf->BufUsed) {
+ if ((*pch < 0x20) || (*pch > 0x7F))
+ *pch = Mute;
+ pch ++;
+ }
+ return Buf->BufUsed;
+}
+
-/*
- * remove escaped strings from i.e. the url string (like %20 for blanks)
+/**
+ * \brief remove escaped strings from i.e. the url string (like %20 for blanks)
+ * \param Buf Buffer to translate
+ * \param StripBlanks Reduce several blanks to one?
*/
long StrBufUnescape(StrBuf *Buf, int StripBlanks)
{
}
if (*target == NULL)
*target = NewStrBufPlain(NULL, sizeof(headerStr) + source->BufUsed * 2);
- else if (sizeof(headerStr) + source->BufUsed > (*target)->BufSize)
+ else if (sizeof(headerStr) + source->BufUsed >= (*target)->BufSize)
IncreaseBuf(*target, sizeof(headerStr) + source->BufUsed, 0);
memcpy ((*target)->buf, headerStr, sizeof(headerStr) - 1);
(*target)->BufUsed = sizeof(headerStr) - 1;
for (i=0; (i < source->BufUsed); ++i) {
- if ((*target)->BufUsed + 4 > (*target)->BufSize)
+ if ((*target)->BufUsed + 4 >= (*target)->BufSize)
IncreaseBuf(*target, 1, 0);
ch = (unsigned char) source->buf[i];
if ((ch < 32) || (ch > 126) || (ch == 61)) {
}
}
- if ((*target)->BufUsed + 4 > (*target)->BufSize)
+ if ((*target)->BufUsed + 4 >= (*target)->BufSize)
IncreaseBuf(*target, 1, 0);
(*target)->buf[(*target)->BufUsed++] = '?';
return (*target)->BufUsed;;
}
+/**
+ * \brief replaces all occurances of 'search' by 'replace'
+ * \param buf Buffer to modify
+ * \param search character to search
+ * \param relpace character to replace search by
+ */
void StrBufReplaceChars(StrBuf *buf, char search, char replace)
{
long i;
buf->buf[i] = replace;
}
+
+
+
+/*
+ * Wrapper around iconv_open()
+ * Our version adds aliases for non-standard Microsoft charsets
+ * such as 'MS950', aliasing them to names like 'CP950'
+ *
+ * tocode Target encoding
+ * fromcode Source encoding
+ */
+void ctdl_iconv_open(const char *tocode, const char *fromcode, void *pic)
+{
+#ifdef HAVE_ICONV
+ iconv_t ic = (iconv_t)(-1) ;
+ ic = iconv_open(tocode, fromcode);
+ if (ic == (iconv_t)(-1) ) {
+ char alias_fromcode[64];
+ if ( (strlen(fromcode) == 5) && (!strncasecmp(fromcode, "MS", 2)) ) {
+ safestrncpy(alias_fromcode, fromcode, sizeof alias_fromcode);
+ alias_fromcode[0] = 'C';
+ alias_fromcode[1] = 'P';
+ ic = iconv_open(tocode, alias_fromcode);
+ }
+ }
+ *(iconv_t *)pic = ic;
+#endif
+}
+
+
+
+static inline char *FindNextEnd (const StrBuf *Buf, char *bptr)
+{
+ char * end;
+ /* Find the next ?Q? */
+ if (Buf->BufUsed - (bptr - Buf->buf) < 6)
+ return NULL;
+
+ end = strchr(bptr + 2, '?');
+
+ if (end == NULL)
+ return NULL;
+
+ if ((Buf->BufUsed - (end - Buf->buf) > 3) &&
+ ((*(end + 1) == 'B') || (*(end + 1) == 'Q')) &&
+ (*(end + 2) == '?')) {
+ /* skip on to the end of the cluster, the next ?= */
+ end = strstr(end + 3, "?=");
+ }
+ else
+ /* sort of half valid encoding, try to find an end. */
+ end = strstr(bptr, "?=");
+ return end;
+}
+
+
+void StrBufConvert(StrBuf *ConvertBuf, StrBuf *TmpBuf, void *pic)
+{
+#ifdef HAVE_ICONV
+ int BufSize;
+ iconv_t ic;
+ char *ibuf; /**< Buffer of characters to be converted */
+ char *obuf; /**< Buffer for converted characters */
+ size_t ibuflen; /**< Length of input buffer */
+ size_t obuflen; /**< Length of output buffer */
+
+
+ if (ConvertBuf->BufUsed >= TmpBuf->BufSize)
+ IncreaseBuf(TmpBuf, 0, ConvertBuf->BufUsed);
+
+ ic = *(iconv_t*)pic;
+ ibuf = ConvertBuf->buf;
+ ibuflen = ConvertBuf->BufUsed;
+ obuf = TmpBuf->buf;
+ obuflen = TmpBuf->BufSize;
+
+ iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
+
+ /* little card game: wheres the red lady? */
+ ibuf = ConvertBuf->buf;
+ BufSize = ConvertBuf->BufSize;
+
+ ConvertBuf->buf = TmpBuf->buf;
+ ConvertBuf->BufSize = TmpBuf->BufSize;
+ ConvertBuf->BufUsed = TmpBuf->BufSize - obuflen;
+ ConvertBuf->buf[ConvertBuf->BufUsed] = '\0';
+
+ TmpBuf->buf = ibuf;
+ TmpBuf->BufSize = BufSize;
+ TmpBuf->BufUsed = 0;
+ TmpBuf->buf[0] = '\0';
+#endif
+}
+
+
+
+
+inline static void DecodeSegment(StrBuf *Target,
+ const StrBuf *DecodeMe,
+ char *SegmentStart,
+ char *SegmentEnd,
+ StrBuf *ConvertBuf,
+ StrBuf *ConvertBuf2,
+ StrBuf *FoundCharset)
+{
+ StrBuf StaticBuf;
+ char charset[128];
+ char encoding[16];
+ iconv_t ic = (iconv_t)(-1);
+
+ /* Now we handle foreign character sets properly encoded
+ * in RFC2047 format.
+ */
+ StaticBuf.buf = SegmentStart;
+ StaticBuf.BufUsed = SegmentEnd - SegmentStart;
+ StaticBuf.BufSize = DecodeMe->BufSize - (SegmentStart - DecodeMe->buf);
+ extract_token(charset, SegmentStart, 1, '?', sizeof charset);
+ if (FoundCharset != NULL) {
+ FlushStrBuf(FoundCharset);
+ StrBufAppendBufPlain(FoundCharset, charset, -1, 0);
+ }
+ extract_token(encoding, SegmentStart, 2, '?', sizeof encoding);
+ StrBufExtract_token(ConvertBuf, &StaticBuf, 3, '?');
+
+ *encoding = toupper(*encoding);
+ if (*encoding == 'B') { /**< base64 */
+ ConvertBuf2->BufUsed = CtdlDecodeBase64(ConvertBuf2->buf,
+ ConvertBuf->buf,
+ ConvertBuf->BufUsed);
+ }
+ else if (*encoding == 'Q') { /**< quoted-printable */
+ long pos;
+
+ pos = 0;
+ while (pos < ConvertBuf->BufUsed)
+ {
+ if (ConvertBuf->buf[pos] == '_')
+ ConvertBuf->buf[pos] = ' ';
+ pos++;
+ }
+
+ ConvertBuf2->BufUsed = CtdlDecodeQuotedPrintable(
+ ConvertBuf2->buf,
+ ConvertBuf->buf,
+ ConvertBuf->BufUsed);
+ }
+ else {
+ StrBufAppendBuf(ConvertBuf2, ConvertBuf, 0);
+ }
+
+ ctdl_iconv_open("UTF-8", charset, &ic);
+ if (ic != (iconv_t)(-1) ) {
+ StrBufConvert(ConvertBuf2, ConvertBuf, &ic);
+ StrBufAppendBuf(Target, ConvertBuf2, 0);
+ iconv_close(ic);
+ }
+ else {
+ StrBufAppendBufPlain(Target, HKEY("(unreadable)"), 0);
+ }
+}
+/*
+ * Handle subjects with RFC2047 encoding such as:
+ * =?koi8-r?B?78bP0s3Mxc7JxSDXz9rE1dvO2c3JINvB0sHNySDP?=
+ */
+void StrBuf_RFC822_to_Utf8(StrBuf *Target, const StrBuf *DecodeMe, const StrBuf* DefaultCharset, StrBuf *FoundCharset)
+{
+ StrBuf *ConvertBuf, *ConvertBuf2;
+ char *start, *end, *next, *nextend, *ptr = NULL;
+ iconv_t ic = (iconv_t)(-1) ;
+ const char *eptr;
+ int passes = 0;
+ int i, len, delta;
+ int illegal_non_rfc2047_encoding = 0;
+
+ /* Sometimes, badly formed messages contain strings which were simply
+ * written out directly in some foreign character set instead of
+ * using RFC2047 encoding. This is illegal but we will attempt to
+ * handle it anyway by converting from a user-specified default
+ * charset to UTF-8 if we see any nonprintable characters.
+ */
+
+ len = StrLength(DecodeMe);
+ for (i=0; i<DecodeMe->BufUsed; ++i) {
+ if ((DecodeMe->buf[i] < 32) || (DecodeMe->buf[i] > 126)) {
+ illegal_non_rfc2047_encoding = 1;
+ break;
+ }
+ }
+
+ ConvertBuf = NewStrBufPlain(NULL, StrLength(DecodeMe));
+ if ((illegal_non_rfc2047_encoding) &&
+ (strcasecmp(ChrPtr(DefaultCharset), "UTF-8")) &&
+ (strcasecmp(ChrPtr(DefaultCharset), "us-ascii")) )
+ {
+ ctdl_iconv_open("UTF-8", ChrPtr(DefaultCharset), &ic);
+ if (ic != (iconv_t)(-1) ) {
+ StrBufConvert((StrBuf*)DecodeMe, ConvertBuf, &ic);///TODO: don't void const?
+ iconv_close(ic);
+ }
+ }
+
+ /* pre evaluate the first pair */
+ nextend = end = NULL;
+ len = StrLength(DecodeMe);
+ start = strstr(DecodeMe->buf, "=?");
+ eptr = DecodeMe->buf + DecodeMe->BufUsed;
+ if (start != NULL)
+ end = FindNextEnd (DecodeMe, start);
+ else {
+ StrBufAppendBuf(Target, DecodeMe, 0);
+ FreeStrBuf(&ConvertBuf);
+ return;
+ }
+
+ ConvertBuf2 = NewStrBufPlain(NULL, StrLength(DecodeMe));
+
+ if (start != DecodeMe->buf)
+ StrBufAppendBufPlain(Target, DecodeMe->buf, start - DecodeMe->buf, 0);
+ /*
+ * Since spammers will go to all sorts of absurd lengths to get their
+ * messages through, there are LOTS of corrupt headers out there.
+ * So, prevent a really badly formed RFC2047 header from throwing
+ * this function into an infinite loop.
+ */
+ while ((start != NULL) &&
+ (end != NULL) &&
+ (start < eptr) &&
+ (end < eptr) &&
+ (passes < 20))
+ {
+ passes++;
+ DecodeSegment(Target,
+ DecodeMe,
+ start,
+ end,
+ ConvertBuf,
+ ConvertBuf2,
+ FoundCharset);
+
+ next = strstr(end, "=?");
+ nextend = NULL;
+ if ((next != NULL) &&
+ (next < eptr))
+ nextend = FindNextEnd(DecodeMe, next);
+ if (nextend == NULL)
+ next = NULL;
+
+ /* did we find two partitions */
+ if ((next != NULL) &&
+ ((next - end) > 2))
+ {
+ ptr = end + 2;
+ while ((ptr < next) &&
+ (isspace(*ptr) ||
+ (*ptr == '\r') ||
+ (*ptr == '\n') ||
+ (*ptr == '\t')))
+ ptr ++;
+ /* did we find a gab just filled with blanks? */
+ if (ptr == next)
+ {
+ memmove (end + 2,
+ next,
+ len - (next - start));
+
+ /* now terminate the gab at the end */
+ delta = (next - end) - 2; ////TODO: const!
+ ((StrBuf*)DecodeMe)->BufUsed -= delta;
+ ((StrBuf*)DecodeMe)->buf[DecodeMe->BufUsed] = '\0';
+
+ /* move next to its new location. */
+ next -= delta;
+ nextend -= delta;
+ }
+ }
+ /* our next-pair is our new first pair now. */
+ ptr = end + 2;
+ start = next;
+ end = nextend;
+ }
+ end = ptr;
+ nextend = DecodeMe->buf + DecodeMe->BufUsed;
+ if ((end != NULL) && (end < nextend)) {
+ ptr = end;
+ while ( (ptr < nextend) &&
+ (isspace(*ptr) ||
+ (*ptr == '\r') ||
+ (*ptr == '\n') ||
+ (*ptr == '\t')))
+ ptr ++;
+ if (ptr < nextend)
+ StrBufAppendBufPlain(Target, end, nextend - end, 0);
+ }
+ FreeStrBuf(&ConvertBuf);
+ FreeStrBuf(&ConvertBuf2);
+}
+
+
+
+long StrBuf_Utf8StrLen(StrBuf *Buf)
+{
+ return Ctdl_Utf8StrLen(Buf->buf);
+}
+
+long StrBuf_Utf8StrCut(StrBuf *Buf, int maxlen)
+{
+ char *CutAt;
+
+ CutAt = Ctdl_Utf8StrCut(Buf->buf, maxlen);
+ if (CutAt != NULL) {
+ Buf->BufUsed = CutAt - Buf->buf;
+ Buf->buf[Buf->BufUsed] = '\0';
+ }
+ return Buf->BufUsed;
+}
+
+
+
+int StrBufSipLine(StrBuf *LineBuf, StrBuf *Buf, const char **Ptr)
+{
+ const char *aptr, *ptr, *eptr;
+ char *optr, *xptr;
+
+ if (Buf == NULL)
+ return 0;
+
+ if (*Ptr==NULL)
+ ptr = aptr = Buf->buf;
+ else
+ ptr = aptr = *Ptr;
+
+ optr = LineBuf->buf;
+ eptr = Buf->buf + Buf->BufUsed;
+ xptr = LineBuf->buf + LineBuf->BufSize - 1;
+
+ while ((*ptr != '\n') &&
+ (*ptr != '\r') &&
+ (ptr < eptr))
+ {
+ *optr = *ptr;
+ optr++; ptr++;
+ if (optr == xptr) {
+ LineBuf->BufUsed = optr - LineBuf->buf;
+ IncreaseBuf(LineBuf, 1, LineBuf->BufUsed + 1);
+ optr = LineBuf->buf + LineBuf->BufUsed;
+ xptr = LineBuf->buf + LineBuf->BufSize - 1;
+ }
+ }
+ LineBuf->BufUsed = optr - LineBuf->buf;
+ *optr = '\0';
+ if (*ptr == '\r')
+ ptr ++;
+ if (*ptr == '\n')
+ ptr ++;
+
+ *Ptr = ptr;
+
+ return Buf->BufUsed - (ptr - Buf->buf);
+}
projects / citadel.git / blobdiff