diff options
Diffstat (limited to 'libcurl/src/lib/sendf.c')
| -rw-r--r-- | libcurl/src/lib/sendf.c | 710 |
1 files changed, 0 insertions, 710 deletions
diff --git a/libcurl/src/lib/sendf.c b/libcurl/src/lib/sendf.c deleted file mode 100644 index 854606b..0000000 --- a/libcurl/src/lib/sendf.c +++ /dev/null @@ -1,710 +0,0 @@ -/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#include <curl/curl.h>
-
-#include "urldata.h"
-#include "sendf.h"
-#include "connect.h"
-#include "vtls/vtls.h"
-#include "ssh.h"
-#include "multiif.h"
-#include "non-ascii.h"
-#include "curl_printf.h"
-#include "strerror.h"
-
-/* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
-
-#ifdef CURL_DO_LINEEND_CONV
-/*
- * convert_lineends() changes CRLF (\r\n) end-of-line markers to a single LF
- * (\n), with special processing for CRLF sequences that are split between two
- * blocks of data. Remaining, bare CRs are changed to LFs. The possibly new
- * size of the data is returned.
- */
-static size_t convert_lineends(struct SessionHandle *data,
- char *startPtr, size_t size)
-{
- char *inPtr, *outPtr;
-
- /* sanity check */
- if((startPtr == NULL) || (size < 1)) {
- return size;
- }
-
- if(data->state.prev_block_had_trailing_cr) {
- /* The previous block of incoming data
- had a trailing CR, which was turned into a LF. */
- if(*startPtr == '\n') {
- /* This block of incoming data starts with the
- previous block's LF so get rid of it */
- memmove(startPtr, startPtr+1, size-1);
- size--;
- /* and it wasn't a bare CR but a CRLF conversion instead */
- data->state.crlf_conversions++;
- }
- data->state.prev_block_had_trailing_cr = FALSE; /* reset the flag */
- }
-
- /* find 1st CR, if any */
- inPtr = outPtr = memchr(startPtr, '\r', size);
- if(inPtr) {
- /* at least one CR, now look for CRLF */
- while(inPtr < (startPtr+size-1)) {
- /* note that it's size-1, so we'll never look past the last byte */
- if(memcmp(inPtr, "\r\n", 2) == 0) {
- /* CRLF found, bump past the CR and copy the NL */
- inPtr++;
- *outPtr = *inPtr;
- /* keep track of how many CRLFs we converted */
- data->state.crlf_conversions++;
- }
- else {
- if(*inPtr == '\r') {
- /* lone CR, move LF instead */
- *outPtr = '\n';
- }
- else {
- /* not a CRLF nor a CR, just copy whatever it is */
- *outPtr = *inPtr;
- }
- }
- outPtr++;
- inPtr++;
- } /* end of while loop */
-
- if(inPtr < startPtr+size) {
- /* handle last byte */
- if(*inPtr == '\r') {
- /* deal with a CR at the end of the buffer */
- *outPtr = '\n'; /* copy a NL instead */
- /* note that a CRLF might be split across two blocks */
- data->state.prev_block_had_trailing_cr = TRUE;
- }
- else {
- /* copy last byte */
- *outPtr = *inPtr;
- }
- outPtr++;
- }
- if(outPtr < startPtr+size)
- /* tidy up by null terminating the now shorter data */
- *outPtr = '\0';
-
- return (outPtr - startPtr);
- }
- return size;
-}
-#endif /* CURL_DO_LINEEND_CONV */
-
-/* Curl_infof() is for info message along the way */
-
-CURL_STATIC void Curl_infof(struct SessionHandle *data, const char *fmt, ...)
-{
- if(data && data->set.verbose) {
- va_list ap;
- size_t len;
- char print_buffer[2048 + 1];
- va_start(ap, fmt);
- vsnprintf(print_buffer, sizeof(print_buffer), fmt, ap);
- va_end(ap);
- len = strlen(print_buffer);
- Curl_debug(data, CURLINFO_TEXT, print_buffer, len, NULL);
- }
-}
-
-/* Curl_failf() is for messages stating why we failed.
- * The message SHALL NOT include any LF or CR.
- */
-
-CURL_STATIC void Curl_failf(struct SessionHandle *data, const char *fmt, ...)
-{
- va_list ap;
- size_t len;
- va_start(ap, fmt);
-
- vsnprintf(data->state.buffer, BUFSIZE, fmt, ap);
-
- if(data->set.errorbuffer && !data->state.errorbuf) {
- snprintf(data->set.errorbuffer, CURL_ERROR_SIZE, "%s", data->state.buffer);
- data->state.errorbuf = TRUE; /* wrote error string */
- }
- if(data->set.verbose) {
- len = strlen(data->state.buffer);
- if(len < BUFSIZE - 1) {
- data->state.buffer[len] = '\n';
- data->state.buffer[++len] = '\0';
- }
- Curl_debug(data, CURLINFO_TEXT, data->state.buffer, len, NULL);
- }
-
- va_end(ap);
-}
-
-/* Curl_sendf() sends formated data to the server */
-CURL_STATIC CURLcode Curl_sendf(curl_socket_t sockfd, struct connectdata *conn,
- const char *fmt, ...)
-{
- struct SessionHandle *data = conn->data;
- ssize_t bytes_written;
- size_t write_len;
- CURLcode result = CURLE_OK;
- char *s;
- char *sptr;
- va_list ap;
- va_start(ap, fmt);
- s = vaprintf(fmt, ap); /* returns an allocated string */
- va_end(ap);
- if(!s)
- return CURLE_OUT_OF_MEMORY; /* failure */
-
- bytes_written=0;
- write_len = strlen(s);
- sptr = s;
-
- for(;;) {
- /* Write the buffer to the socket */
- result = Curl_write(conn, sockfd, sptr, write_len, &bytes_written);
-
- if(result)
- break;
-
- if(data->set.verbose)
- Curl_debug(data, CURLINFO_DATA_OUT, sptr, (size_t)bytes_written, conn);
-
- if((size_t)bytes_written != write_len) {
- /* if not all was written at once, we must advance the pointer, decrease
- the size left and try again! */
- write_len -= bytes_written;
- sptr += bytes_written;
- }
- else
- break;
- }
-
- free(s); /* free the output string */
-
- return result;
-}
-
-/*
- * Curl_write() is an internal write function that sends data to the
- * server. Works with plain sockets, SCP, SSL or kerberos.
- *
- * If the write would block (CURLE_AGAIN), we return CURLE_OK and
- * (*written == 0). Otherwise we return regular CURLcode value.
- */
-CURL_STATIC CURLcode Curl_write(struct connectdata *conn,
- curl_socket_t sockfd,
- const void *mem,
- size_t len,
- ssize_t *written)
-{
- ssize_t bytes_written;
- CURLcode result = CURLE_OK;
- int num = (sockfd == conn->sock[SECONDARYSOCKET]);
-
- bytes_written = conn->send[num](conn, num, mem, len, &result);
-
- *written = bytes_written;
- if(bytes_written >= 0)
- /* we completely ignore the curlcode value when subzero is not returned */
- return CURLE_OK;
-
- /* handle CURLE_AGAIN or a send failure */
- switch(result) {
- case CURLE_AGAIN:
- *written = 0;
- return CURLE_OK;
-
- case CURLE_OK:
- /* general send failure */
- return CURLE_SEND_ERROR;
-
- default:
- /* we got a specific curlcode, forward it */
- return result;
- }
-}
-
-CURL_STATIC ssize_t Curl_send_plain(struct connectdata *conn, int num,
- const void *mem, size_t len, CURLcode *code)
-{
- curl_socket_t sockfd = conn->sock[num];
- ssize_t bytes_written = swrite(sockfd, mem, len);
-
- *code = CURLE_OK;
- if(-1 == bytes_written) {
- int err = SOCKERRNO;
-
- if(
-#ifdef WSAEWOULDBLOCK
- /* This is how Windows does it */
- (WSAEWOULDBLOCK == err)
-#else
- /* errno may be EWOULDBLOCK or on some systems EAGAIN when it returned
- due to its inability to send off data without blocking. We therefor
- treat both error codes the same here */
- (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err)
-#endif
- ) {
- /* this is just a case of EWOULDBLOCK */
- bytes_written=0;
- *code = CURLE_AGAIN;
- }
- else {
- failf(conn->data, "Send failure: %s",
- Curl_strerror(conn, err));
- conn->data->state.os_errno = err;
- *code = CURLE_SEND_ERROR;
- }
- }
- return bytes_written;
-}
-
-/*
- * Curl_write_plain() is an internal write function that sends data to the
- * server using plain sockets only. Otherwise meant to have the exact same
- * proto as Curl_write()
- */
-CURL_STATIC CURLcode Curl_write_plain(struct connectdata *conn,
- curl_socket_t sockfd,
- const void *mem,
- size_t len,
- ssize_t *written)
-{
- ssize_t bytes_written;
- CURLcode result;
- int num = (sockfd == conn->sock[SECONDARYSOCKET]);
-
- bytes_written = Curl_send_plain(conn, num, mem, len, &result);
-
- *written = bytes_written;
-
- return result;
-}
-
-CURL_STATIC ssize_t Curl_recv_plain(struct connectdata *conn, int num, char *buf,
- size_t len, CURLcode *code)
-{
- curl_socket_t sockfd = conn->sock[num];
- ssize_t nread = sread(sockfd, buf, len);
-
- *code = CURLE_OK;
- if(-1 == nread) {
- int err = SOCKERRNO;
-
- if(
-#ifdef WSAEWOULDBLOCK
- /* This is how Windows does it */
- (WSAEWOULDBLOCK == err)
-#else
- /* errno may be EWOULDBLOCK or on some systems EAGAIN when it returned
- due to its inability to send off data without blocking. We therefor
- treat both error codes the same here */
- (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err)
-#endif
- ) {
- /* this is just a case of EWOULDBLOCK */
- *code = CURLE_AGAIN;
- }
- else {
- failf(conn->data, "Recv failure: %s",
- Curl_strerror(conn, err));
- conn->data->state.os_errno = err;
- *code = CURLE_RECV_ERROR;
- }
- }
- return nread;
-}
-
-static CURLcode pausewrite(struct SessionHandle *data,
- int type, /* what type of data */
- const char *ptr,
- size_t len)
-{
- /* signalled to pause sending on this connection, but since we have data
- we want to send we need to dup it to save a copy for when the sending
- is again enabled */
- struct SingleRequest *k = &data->req;
- char *dupl = malloc(len);
- if(!dupl)
- return CURLE_OUT_OF_MEMORY;
-
- memcpy(dupl, ptr, len);
-
- /* store this information in the state struct for later use */
- data->state.tempwrite = dupl;
- data->state.tempwritesize = len;
- data->state.tempwritetype = type;
-
- /* mark the connection as RECV paused */
- k->keepon |= KEEP_RECV_PAUSE;
-
- DEBUGF(infof(data, "Pausing with %zu bytes in buffer for type %02x\n",
- len, type));
-
- return CURLE_OK;
-}
-
-
-/* Curl_client_chop_write() writes chunks of data not larger than
- * CURL_MAX_WRITE_SIZE via client write callback(s) and
- * takes care of pause requests from the callbacks.
- */
-CURL_STATIC CURLcode Curl_client_chop_write(struct connectdata *conn,
- int type,
- char * ptr,
- size_t len)
-{
- struct SessionHandle *data = conn->data;
- curl_write_callback writeheader = NULL;
- curl_write_callback writebody = NULL;
-
- if (!len)
- return CURLE_OK;
-
- /* If reading is actually paused, we're forced to append this chunk of data
- to the already held data, but only if it is the same type as otherwise it
- can't work and it'll return error instead. */
- if(data->req.keepon & KEEP_RECV_PAUSE) {
- size_t newlen;
- char *newptr;
- if(type != data->state.tempwritetype)
- /* major internal confusion */
- return CURLE_RECV_ERROR;
-
- DEBUGASSERT(data->state.tempwrite);
-
- /* figure out the new size of the data to save */
- newlen = len + data->state.tempwritesize;
- /* allocate the new memory area */
- newptr = realloc(data->state.tempwrite, newlen);
- if(!newptr)
- return CURLE_OUT_OF_MEMORY;
- /* copy the new data to the end of the new area */
- memcpy(newptr + data->state.tempwritesize, ptr, len);
- /* update the pointer and the size */
- data->state.tempwrite = newptr;
- data->state.tempwritesize = newlen;
- return CURLE_OK;
- }
-
- /* Determine the callback(s) to use. */
- if(type & CLIENTWRITE_BODY)
- writebody = data->set.fwrite_func;
- if((type & CLIENTWRITE_HEADER) &&
- (data->set.fwrite_header || data->set.writeheader)) {
- /*
- * Write headers to the same callback or to the especially setup
- * header callback function (added after version 7.7.1).
- */
- writeheader =
- data->set.fwrite_header? data->set.fwrite_header: data->set.fwrite_func;
- }
-
- /* Chop data, write chunks. */
- while(len) {
- size_t chunklen = len <= CURL_MAX_WRITE_SIZE? len: CURL_MAX_WRITE_SIZE;
-
- if(writebody) {
- size_t wrote = writebody(ptr, 1, chunklen, data->set.out);
-
- if(CURL_WRITEFUNC_PAUSE == wrote) {
- if(conn->handler->flags & PROTOPT_NONETWORK) {
- /* Protocols that work without network cannot be paused. This is
- actually only FILE:// just now, and it can't pause since the
- transfer isn't done using the "normal" procedure. */
- failf(data, "Write callback asked for PAUSE when not supported!");
- return CURLE_WRITE_ERROR;
- }
- else
- return pausewrite(data, type, ptr, len);
- }
- else if(wrote != chunklen) {
- failf(data, "Failed writing body (%zu != %zu)", wrote, chunklen);
- return CURLE_WRITE_ERROR;
- }
- }
-
- if(writeheader) {
- size_t wrote = writeheader(ptr, 1, chunklen, data->set.writeheader);
-
- if(CURL_WRITEFUNC_PAUSE == wrote)
- /* here we pass in the HEADER bit only since if this was body as well
- then it was passed already and clearly that didn't trigger the
- pause, so this is saved for later with the HEADER bit only */
- return pausewrite(data, CLIENTWRITE_HEADER, ptr, len);
-
- if(wrote != chunklen) {
- failf (data, "Failed writing header");
- return CURLE_WRITE_ERROR;
- }
- }
-
- ptr += chunklen;
- len -= chunklen;
- }
-
- return CURLE_OK;
-}
-
-
-/* Curl_client_write() sends data to the write callback(s)
-
- The bit pattern defines to what "streams" to write to. Body and/or header.
- The defines are in sendf.h of course.
-
- If CURL_DO_LINEEND_CONV is enabled, data is converted IN PLACE to the
- local character encoding. This is a problem and should be changed in
- the future to leave the original data alone.
- */
-CURL_STATIC CURLcode Curl_client_write(struct connectdata *conn,
- int type,
- char *ptr,
- size_t len)
-{
- struct SessionHandle *data = conn->data;
-
- if(0 == len)
- len = strlen(ptr);
-
- /* FTP data may need conversion. */
- if((type & CLIENTWRITE_BODY) &&
- (conn->handler->protocol & PROTO_FAMILY_FTP) &&
- conn->proto.ftpc.transfertype == 'A') {
- /* convert from the network encoding */
- CURLcode result = Curl_convert_from_network(data, ptr, len);
- /* Curl_convert_from_network calls failf if unsuccessful */
- if(result)
- return result;
-
-#ifdef CURL_DO_LINEEND_CONV
- /* convert end-of-line markers */
- len = convert_lineends(data, ptr, len);
-#endif /* CURL_DO_LINEEND_CONV */
- }
-
- return Curl_client_chop_write(conn, type, ptr, len);
-}
-
-CURL_STATIC CURLcode Curl_read_plain(curl_socket_t sockfd,
- char *buf,
- size_t bytesfromsocket,
- ssize_t *n)
-{
- ssize_t nread = sread(sockfd, buf, bytesfromsocket);
-
- if(-1 == nread) {
- int err = SOCKERRNO;
-#ifdef USE_WINSOCK
- if(WSAEWOULDBLOCK == err)
-#else
- if((EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err))
-#endif
- return CURLE_AGAIN;
- else
- return CURLE_RECV_ERROR;
- }
-
- /* we only return number of bytes read when we return OK */
- *n = nread;
- return CURLE_OK;
-}
-
-/*
- * Internal read-from-socket function. This is meant to deal with plain
- * sockets, SSL sockets and kerberos sockets.
- *
- * Returns a regular CURLcode value.
- */
-CURLcode Curl_read(struct connectdata *conn, /* connection data */
- curl_socket_t sockfd, /* read from this socket */
- char *buf, /* store read data here */
- size_t sizerequested, /* max amount to read */
- ssize_t *n) /* amount bytes read */
-{
- CURLcode result = CURLE_RECV_ERROR;
- ssize_t nread = 0;
- size_t bytesfromsocket = 0;
- char *buffertofill = NULL;
- bool pipelining = Curl_multi_pipeline_enabled(conn->data->multi);
-
- /* Set 'num' to 0 or 1, depending on which socket that has been sent here.
- If it is the second socket, we set num to 1. Otherwise to 0. This lets
- us use the correct ssl handle. */
- int num = (sockfd == conn->sock[SECONDARYSOCKET]);
-
- *n=0; /* reset amount to zero */
-
- /* If session can pipeline, check connection buffer */
- if(pipelining) {
- size_t bytestocopy = CURLMIN(conn->buf_len - conn->read_pos,
- sizerequested);
-
- /* Copy from our master buffer first if we have some unread data there*/
- if(bytestocopy > 0) {
- memcpy(buf, conn->master_buffer + conn->read_pos, bytestocopy);
- conn->read_pos += bytestocopy;
- conn->bits.stream_was_rewound = FALSE;
-
- *n = (ssize_t)bytestocopy;
- return CURLE_OK;
- }
- /* If we come here, it means that there is no data to read from the buffer,
- * so we read from the socket */
- bytesfromsocket = CURLMIN(sizerequested, BUFSIZE * sizeof (char));
- buffertofill = conn->master_buffer;
- }
- else {
- bytesfromsocket = CURLMIN((long)sizerequested,
- conn->data->set.buffer_size ?
- conn->data->set.buffer_size : BUFSIZE);
- buffertofill = buf;
- }
-
- nread = conn->recv[num](conn, num, buffertofill, bytesfromsocket, &result);
- if(nread < 0)
- return result;
-
- if(pipelining) {
- memcpy(buf, conn->master_buffer, nread);
- conn->buf_len = nread;
- conn->read_pos = nread;
- }
-
- *n += nread;
-
- return CURLE_OK;
-}
-
-/* return 0 on success */
-static int showit(struct SessionHandle *data, curl_infotype type,
- char *ptr, size_t size)
-{
- static const char s_infotype[CURLINFO_END][3] = {
- "* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
-
-#ifdef CURL_DOES_CONVERSIONS
- char buf[BUFSIZE+1];
- size_t conv_size = 0;
-
- switch(type) {
- case CURLINFO_HEADER_OUT:
- /* assume output headers are ASCII */
- /* copy the data into my buffer so the original is unchanged */
- if(size > BUFSIZE) {
- size = BUFSIZE; /* truncate if necessary */
- buf[BUFSIZE] = '\0';
- }
- conv_size = size;
- memcpy(buf, ptr, size);
- /* Special processing is needed for this block if it
- * contains both headers and data (separated by CRLFCRLF).
- * We want to convert just the headers, leaving the data as-is.
- */
- if(size > 4) {
- size_t i;
- for(i = 0; i < size-4; i++) {
- if(memcmp(&buf[i], "\x0d\x0a\x0d\x0a", 4) == 0) {
- /* convert everything through this CRLFCRLF but no further */
- conv_size = i + 4;
- break;
- }
- }
- }
-
- Curl_convert_from_network(data, buf, conv_size);
- /* Curl_convert_from_network calls failf if unsuccessful */
- /* we might as well continue even if it fails... */
- ptr = buf; /* switch pointer to use my buffer instead */
- break;
- default:
- /* leave everything else as-is */
- break;
- }
-#endif /* CURL_DOES_CONVERSIONS */
-
- if(data->set.fdebug)
- return (*data->set.fdebug)(data, type, ptr, size,
- data->set.debugdata);
-
- switch(type) {
- case CURLINFO_TEXT:
- case CURLINFO_HEADER_OUT:
- case CURLINFO_HEADER_IN:
- fwrite(s_infotype[type], 2, 1, data->set.err);
- fwrite(ptr, size, 1, data->set.err);
-#ifdef CURL_DOES_CONVERSIONS
- if(size != conv_size) {
- /* we had untranslated data so we need an explicit newline */
- fwrite("\n", 1, 1, data->set.err);
- }
-#endif
- break;
- default: /* nada */
- break;
- }
- return 0;
-}
-
-CURL_STATIC int Curl_debug(struct SessionHandle *data, curl_infotype type,
- char *ptr, size_t size,
- struct connectdata *conn)
-{
- int rc;
- if(data->set.printhost && conn && conn->host.dispname) {
- char buffer[160];
- const char *t=NULL;
- const char *w="Data";
- switch (type) {
- case CURLINFO_HEADER_IN:
- w = "Header";
- /* FALLTHROUGH */
- case CURLINFO_DATA_IN:
- t = "from";
- break;
- case CURLINFO_HEADER_OUT:
- w = "Header";
- /* FALLTHROUGH */
- case CURLINFO_DATA_OUT:
- t = "to";
- break;
- default:
- break;
- }
-
- if(t) {
- snprintf(buffer, sizeof(buffer), "[%s %s %s]", w, t,
- conn->host.dispname);
- rc = showit(data, CURLINFO_TEXT, buffer, strlen(buffer));
- if(rc)
- return rc;
- }
- }
- rc = showit(data, type, ptr, size);
- return rc;
-}
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