Removed the chunked-io stuff from libcitadel. Nothing was using it and it isn't...
[citadel.git] / libcitadel / lib / stringbuf.c
index 0340ce4d44fb51e6edd50578e5d31c3a90eef890..770cb3eb575893357592c83869fc68a543ab9ad8 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1987-2013 by the citadel.org team
+ * Copyright (c) 1987-2018 by the citadel.org team
  *
  * This program is open source software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -256,7 +256,7 @@ void dbg_Init(StrBuf *Buf)
  * @param A First one
  * @param B second one
  */
-static inline void SwapBuffers(StrBuf *A, StrBuf *B)
+static inline void iSwapBuffers(StrBuf *A, StrBuf *B)
 {
        StrBuf C;
 
@@ -266,6 +266,12 @@ static inline void SwapBuffers(StrBuf *A, StrBuf *B)
 
 }
 
+void SwapBuffers(StrBuf *A, StrBuf *B)
+{
+       iSwapBuffers(A, B);
+}
+
+
 /** 
  * @ingroup StrBuf_Cast
  * @brief Cast operator to Plain String 
@@ -510,7 +516,7 @@ void NewStrBufDupAppendFlush(StrBuf **CreateRelpaceMe, StrBuf *CopyFlushMe, cons
                }
                else 
                        NewBuf = *CreateRelpaceMe;
-               SwapBuffers (NewBuf, CopyFlushMe);
+               iSwapBuffers (NewBuf, CopyFlushMe);
        }
        if (!KeepOriginal)
                FlushStrBuf(CopyFlushMe);
@@ -3047,7 +3053,7 @@ int StrBufStreamTranscode(eStreamType type, IOBuffer *Target, IOBuffer *In, cons
                     (stream->OutBuf.BufUsed != org_outbuf_len)
                            ))
                {
-                       SwapBuffers(Target->Buf, &stream->OutBuf);
+                       iSwapBuffers(Target->Buf, &stream->OutBuf);
                }
 
                if (stream->zstream.avail_in == 0)
@@ -3118,7 +3124,7 @@ int StrBufStreamTranscode(eStreamType type, IOBuffer *Target, IOBuffer *In, cons
 
                stream->OutBuf.BufUsed += stream->zstream.total_out + org_outbuf_len;
 
-               if (Target) SwapBuffers(Target->Buf, &stream->OutBuf);
+               if (Target) iSwapBuffers(Target->Buf, &stream->OutBuf);
 
                if (stream->zstream.avail_in == 0)
                {
@@ -3767,7 +3773,7 @@ TRYAGAIN:
                TmpBuf->buf[TmpBuf->BufUsed] = '\0';
                
                /* little card game: wheres the red lady? */
-               SwapBuffers(ConvertBuf, TmpBuf);
+               iSwapBuffers(ConvertBuf, TmpBuf);
                FlushStrBuf(TmpBuf);
        }
 #endif
@@ -4136,11 +4142,11 @@ long StrBuf_Utf8StrCut(StrBuf *Buf, int maxlen)
                        n++;
                        aptr++;
                }
-               if (n > maxlen) {
+               if (n >= maxlen) {
                        *aptr = '\0';
                        Buf->BufUsed = aptr - Buf->buf;
                        return Buf->BufUsed;
-               }                       
+               }
        }
        return Buf->BufUsed;
 
@@ -4500,421 +4506,6 @@ long IOBufferStrLength(IOBuffer *FB)
        return StrLength(FB->Buf) - (FB->ReadWritePointer - FB->Buf->buf);
 }
 
-inline static void FDIOBufferFlush(FDIOBuffer *FDB)
-{
-       memset(FDB, 0, sizeof(FDIOBuffer));
-       FDB->OtherFD = -1;
-       FDB->SplicePipe[0] = -1;
-       FDB->SplicePipe[1] = -1;
-}
-
-void FDIOBufferInit(FDIOBuffer *FDB, IOBuffer *IO, int FD, long TotalSendSize)
-{
-       FDIOBufferFlush(FDB);
-
-       FDB->TotalSendSize = TotalSendSize;
-       if (TotalSendSize > 0)
-               FDB->ChunkSize = TotalSendSize;
-       else
-       {
-               TotalSendSize = SIZ * 10;
-               FDB->ChunkSize = TotalSendSize;
-       }
-       FDB->IOB = IO;
-
-#ifdef LINUX_SPLICE
-       if (EnableSplice)
-               pipe(FDB->SplicePipe);
-       else
-#endif
-               FDB->ChunkBuffer = NewStrBufPlain(NULL, TotalSendSize+ 1);
-
-       FDB->OtherFD = FD;
-}
-
-void FDIOBufferDelete(FDIOBuffer *FDB)
-{
-#ifdef LINUX_SPLICE
-       if (EnableSplice)
-       {
-               if (FDB->SplicePipe[0] > 0)
-                       close(FDB->SplicePipe[0]);
-               if (FDB->SplicePipe[1] > 0)
-                       close(FDB->SplicePipe[1]);
-       }
-       else
-#endif
-               FreeStrBuf(&FDB->ChunkBuffer);
-       
-       if (FDB->OtherFD > 0)
-               close(FDB->OtherFD);
-       FDIOBufferFlush(FDB);
-}
-
-int FileSendChunked(FDIOBuffer *FDB, const char **Err)
-{
-       ssize_t sent, pipesize;
-
-       if (FDB->TotalSendSize > 0)
-       {
-#ifdef LINUX_SPLICE
-               if (EnableSplice)
-               {
-                       if (FDB->PipeSize == 0)
-                       {
-                               pipesize = splice(FDB->OtherFD,
-                                                 &FDB->TotalSentAlready, 
-                                                 FDB->SplicePipe[1],
-                                                 NULL, 
-                                                 FDB->ChunkSendRemain, 
-                                                 SPLICE_F_MOVE);
-       
-                               if (pipesize == -1)
-                               {
-                                       *Err = strerror(errno);
-                                       return pipesize;
-                               }
-                               FDB->PipeSize = pipesize;
-                       }
-                       sent =  splice(FDB->SplicePipe[0],
-                                      NULL, 
-                                      FDB->IOB->fd,
-                                      NULL, 
-                                      FDB->PipeSize,
-                                      SPLICE_F_MORE | SPLICE_F_MOVE | SPLICE_F_NONBLOCK);
-                       if (sent == -1)
-                       {
-                               *Err = strerror(errno);
-                               return sent;
-                       }
-                       FDB->PipeSize -= sent;
-                       FDB->ChunkSendRemain -= sent;
-                       return sent;
-               }
-               else
-#endif
-               {
-                       char *pRead;
-                       long nRead = 0;
-
-                       pRead = FDB->ChunkBuffer->buf;
-                       while ((FDB->ChunkBuffer->BufUsed < FDB->TotalSendSize) && (nRead >= 0))
-                       {
-                               nRead = read(FDB->OtherFD, pRead, FDB->TotalSendSize - FDB->ChunkBuffer->BufUsed);
-                               if (nRead > 0) {
-                                       FDB->ChunkBuffer->BufUsed += nRead;
-                                       FDB->ChunkBuffer->buf[FDB->ChunkBuffer->BufUsed] = '\0';
-                               }
-                               else if (nRead == 0) {}
-                               else return nRead;
-                       }
-
-                       nRead = write(FDB->IOB->fd,
-                                     FDB->ChunkBuffer->buf     + FDB->TotalSentAlready,
-                                     FDB->ChunkBuffer->BufUsed - FDB->TotalSentAlready);
-
-                       if (nRead >= 0) {
-                               FDB->TotalSentAlready += nRead;
-                               FDB->ChunkSendRemain -= nRead;
-                               return FDB->ChunkSendRemain;
-                       }
-                       else {
-                               return nRead;
-                       }
-               }
-       }
-       else
-       {
-#ifdef LINUX_SPLICE
-               if (EnableSplice)
-               {
-                       if (FDB->PipeSize == 0)
-                       {
-                               pipesize = splice(FDB->OtherFD,
-                                                 &FDB->TotalSentAlready, 
-                                                 FDB->SplicePipe[1],
-                                                 NULL, 
-                                                 SIZ * 10, 
-                                                 SPLICE_F_MOVE);
-       
-                               if (pipesize == -1)
-                               {
-                                       *Err = strerror(errno);
-                                       return pipesize;
-                               }
-                               FDB->PipeSize = pipesize;
-                               if (pipesize == 0)
-                                       return -1;
-                       }
-                       sent =  splice(FDB->SplicePipe[0],
-                                      NULL, 
-                                      FDB->IOB->fd,
-                                      NULL, 
-                                      FDB->PipeSize,
-                                      SPLICE_F_MORE | SPLICE_F_MOVE | SPLICE_F_NONBLOCK);
-                       if (sent == -1)
-                       {
-                               *Err = strerror(errno);
-                               return sent;
-                       }
-                       FDB->PipeSize -= sent;
-                       FDB->ChunkSendRemain -= sent;
-                       return sent;
-               }
-               else
-#endif
-               {
-                       char *pRead;
-                       long nRead = 0;
-
-                       pRead = FDB->ChunkBuffer->buf;
-                       while ((FDB->ChunkSendRemain == 0) && 
-                              (FDB->ChunkBuffer->BufUsed < FDB->ChunkBuffer->BufSize) &&
-                              (nRead >= 0))
-                       {
-                               FDB->TotalSentAlready = 0;
-                               nRead = read(FDB->OtherFD, pRead, FDB->ChunkBuffer->BufSize - FDB->ChunkBuffer->BufUsed);
-                               if (nRead > 0) {
-                                       FDB->ChunkBuffer->BufUsed += nRead;
-                                       FDB->ChunkBuffer->buf[FDB->ChunkBuffer->BufUsed] = '\0';
-                                       FDB->ChunkSendRemain += nRead;
-                               }
-                               else if (nRead == 0)
-                               {
-                                       return -1;
-                               }
-                               else
-                               {
-                                       *Err = strerror(errno);
-                                       return nRead;
-                               }
-                       }
-
-                       nRead = write(FDB->IOB->fd,
-                                     FDB->ChunkBuffer->buf     + FDB->TotalSentAlready,
-                                     FDB->ChunkBuffer->BufUsed - FDB->TotalSentAlready);
-
-                       if (nRead >= 0) {
-                               FDB->TotalSentAlready += nRead;
-                               FDB->ChunkSendRemain -= nRead;
-                               if (FDB->ChunkSendRemain == 0)
-                               {
-                                       FDB->ChunkBuffer->BufUsed = 0;
-                                       FDB->TotalSentAlready = 0;
-                               }
-                               return FDB->ChunkSendRemain;
-                       }
-                       else {
-                               return nRead;
-                       }
-               }
-       }
-}
-
-int FileRecvChunked(FDIOBuffer *FDB, const char **Err)
-{
-       ssize_t sent, pipesize;
-
-#ifdef LINUX_SPLICE
-       if (EnableSplice)
-       {
-               if (FDB->PipeSize == 0)
-               {
-                       pipesize = splice(FDB->IOB->fd,
-                                         NULL, 
-                                         FDB->SplicePipe[1],
-                                         NULL, 
-                                         FDB->ChunkSendRemain, 
-                                         SPLICE_F_MORE | SPLICE_F_MOVE|SPLICE_F_NONBLOCK);
-
-                       if (pipesize == -1)
-                       {
-                               *Err = strerror(errno);
-                               return pipesize;
-                       }
-                       FDB->PipeSize = pipesize;
-               }
-       
-               sent = splice(FDB->SplicePipe[0],
-                             NULL, 
-                             FDB->OtherFD,
-                             &FDB->TotalSentAlready, 
-                             FDB->PipeSize,
-                             SPLICE_F_MORE | SPLICE_F_MOVE);
-
-               if (sent == -1)
-               {
-                       *Err = strerror(errno);
-                       return sent;
-               }
-               FDB->PipeSize -= sent;
-               FDB->ChunkSendRemain -= sent;
-               return sent;
-       }
-       else
-#endif
-       {
-               sent = read(FDB->IOB->fd, FDB->ChunkBuffer->buf, FDB->ChunkSendRemain);
-               if (sent > 0) {
-                       int nWritten = 0;
-                       int rc; 
-               
-                       FDB->ChunkBuffer->BufUsed = sent;
-
-                       while (nWritten < FDB->ChunkBuffer->BufUsed) {
-                               rc =  write(FDB->OtherFD, FDB->ChunkBuffer->buf + nWritten, FDB->ChunkBuffer->BufUsed - nWritten);
-                               if (rc < 0) {
-                                       *Err = strerror(errno);
-                                       return rc;
-                               }
-                               nWritten += rc;
-
-                       }
-                       FDB->ChunkBuffer->BufUsed = 0;
-                       FDB->TotalSentAlready += sent;
-                       FDB->ChunkSendRemain -= sent;
-                       return FDB->ChunkSendRemain;
-               }
-               else if (sent < 0) {
-                       *Err = strerror(errno);
-                       return sent;
-               }
-               return 0;
-       }
-}
-
-int FileMoveChunked(FDIOBuffer *FDB, const char **Err)
-{
-       ssize_t sent, pipesize;
-
-#ifdef LINUX_SPLICE
-       if (EnableSplice)
-       {
-               if (FDB->PipeSize == 0)
-               {
-                       pipesize = splice(FDB->IOB->fd,
-                                         &FDB->TotalReadAlready, 
-                                         FDB->SplicePipe[1],
-                                         NULL, 
-                                         FDB->ChunkSendRemain, 
-                                         SPLICE_F_MORE | SPLICE_F_MOVE|SPLICE_F_NONBLOCK);
-                       
-                       if (pipesize == -1)
-                       {
-                               *Err = strerror(errno);
-                               return pipesize;
-                       }
-                       FDB->PipeSize = pipesize;
-               }
-               
-               sent = splice(FDB->SplicePipe[0],
-                             NULL, 
-                             FDB->OtherFD,
-                             &FDB->TotalSentAlready, 
-                             FDB->PipeSize,
-                             SPLICE_F_MORE | SPLICE_F_MOVE);
-               
-               if (sent == -1)
-               {
-                       *Err = strerror(errno);
-                       return sent;
-               }
-               FDB->PipeSize -= sent;
-               FDB->ChunkSendRemain -= sent;
-               return sent;
-       }
-       else
-#endif 
-       {
-               sent = read(FDB->IOB->fd, FDB->ChunkBuffer->buf, FDB->ChunkSendRemain);
-               if (sent > 0) {
-                       int nWritten = 0;
-                       int rc; 
-               
-                       FDB->ChunkBuffer->BufUsed = sent;
-
-                       while (nWritten < FDB->ChunkBuffer->BufUsed) {
-                               rc =  write(FDB->OtherFD, FDB->ChunkBuffer->buf + nWritten, FDB->ChunkBuffer->BufUsed - nWritten);
-                               if (rc < 0) {
-                                       *Err = strerror(errno);
-                                       return rc;
-                               }
-                               nWritten += rc;
-
-                       }
-                       FDB->ChunkBuffer->BufUsed = 0;
-                       FDB->TotalSentAlready += sent;
-                       FDB->ChunkSendRemain -= sent;
-                       return FDB->ChunkSendRemain;
-               }
-               else if (sent < 0) {
-                       *Err = strerror(errno);
-                       return sent;
-               }
-               return 0;
-       }
-}
-
-eReadState WriteIOBAlreadyRead(FDIOBuffer *FDB, const char **Error)
-{
-       int IsNonBlock;
-       int fdflags;
-       long rlen;
-       long should_write;
-       int nSuccessLess = 0;
-       struct timeval tv;
-       fd_set rfds;
-
-       fdflags = fcntl(FDB->OtherFD, F_GETFL);
-       IsNonBlock = (fdflags & O_NONBLOCK) == O_NONBLOCK;
-
-       while ((FDB->IOB->ReadWritePointer - FDB->IOB->Buf->buf < FDB->IOB->Buf->BufUsed) &&
-              (FDB->ChunkSendRemain > 0))
-       {
-               if (IsNonBlock){
-                       tv.tv_sec = 1; /* selectresolution; */
-                       tv.tv_usec = 0;
-                       
-                       FD_ZERO(&rfds);
-                       FD_SET(FDB->OtherFD, &rfds);
-                       if (select(FDB->OtherFD + 1, NULL, &rfds, NULL, &tv) == -1) {
-                               *Error = strerror(errno);
-                               return eReadFail;
-                       }
-               }
-               if (IsNonBlock && !  FD_ISSET(FDB->OtherFD, &rfds)) {
-                       nSuccessLess ++;
-                       continue;
-               }
-
-               should_write = FDB->IOB->Buf->BufUsed - 
-                       (FDB->IOB->ReadWritePointer - FDB->IOB->Buf->buf);
-               if (should_write > FDB->ChunkSendRemain)
-                       should_write = FDB->ChunkSendRemain;
-
-               rlen = write(FDB->OtherFD, 
-                            FDB->IOB->ReadWritePointer, 
-                            should_write);
-               if (rlen < 1) {
-                       *Error = strerror(errno);
-                                               
-                       return eReadFail;
-               }
-               FDB->TotalSentAlready += rlen;
-               FDB->IOB->ReadWritePointer += rlen;
-               FDB->ChunkSendRemain -= rlen;
-       }
-       if (FDB->IOB->ReadWritePointer >= FDB->IOB->Buf->buf + FDB->IOB->Buf->BufUsed)
-       {
-               FlushStrBuf(FDB->IOB->Buf);
-               FDB->IOB->ReadWritePointer = NULL;
-       }
-
-       if (FDB->ChunkSendRemain == 0)
-               return eReadSuccess;
-       else 
-               return eMustReadMore;
-}
 
 /*******************************************************************************
  *           File I/O; Prefer buffered read since its faster!                  *
@@ -4968,6 +4559,7 @@ int StrBufTCP_read_line(StrBuf *buf, int *fd, int append, const char **Error)
        return len - slen;
 }
 
+
 /**
  * @ingroup StrBuf_BufferedIO
  * @brief Read a line from socket
@@ -5616,3 +5208,44 @@ void StrBufStripSlashes(StrBuf *Dir, int RemoveTrailingSlash)
 }
 
 
+/*
+ * Decode a quoted-printable encoded StrBuf buffer "in place"
+ * This is possible because the decoded will always be shorter than the encoded
+ * so we don't have to worry about the buffer being to small.
+ */
+void StrBufDecodeQP(StrBuf *Buf)
+{
+       if (!Buf) {                             // sanity check #1
+               return;
+       }
+
+       int source_len = StrLength(Buf);
+       if (source_len < 1) {                   // sanity check #2
+               return;
+       }
+
+       int spos = 0;                           // source position
+       int tpos = 0;                           // target position
+
+       while (spos < source_len) {
+               if (!strncmp(&Buf->buf[spos], "=\r\n", 3)) {
+                       spos += 3;
+               }
+               else if (!strncmp(&Buf->buf[spos], "=\n", 2)) {
+                       spos += 2;
+               }
+               else if (Buf->buf[spos] == '=') {
+                       ++spos;
+                       int ch;
+                       sscanf(&Buf->buf[spos], "%02x", &ch);
+                       Buf->buf[tpos++] = ch;
+                       spos +=2;
+               }
+               else {
+                       Buf->buf[tpos++] = Buf->buf[spos++];
+               }
+       }
+
+       Buf->buf[tpos] = 0;
+       Buf->BufUsed = tpos;
+}