curl: Initial codedrop of curl-7.21.3.tar.gz
URL: http://curl.haxx.se/download/curl-7.21.3.tar.gz
diff --git a/curl-7.21.3/lib/sendf.c b/curl-7.21.3/lib/sendf.c
new file mode 100644
index 0000000..d04371f
--- /dev/null
+++ b/curl-7.21.3/lib/sendf.c
@@ -0,0 +1,700 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2010, 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 "setup.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h> /* required for send() & recv() prototypes */
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <curl/curl.h>
+#include "urldata.h"
+#include "sendf.h"
+#include "connect.h"
+#include "sslgen.h"
+#include "ssh.h"
+#include "multiif.h"
+#include "rtsp.h"
+
+#define _MPRINTF_REPLACE /* use the internal *printf() functions */
+#include <curl/mprintf.h>
+
+/* the krb4 functions only exists for FTP and if krb4 or gssapi is defined */
+#if !defined(CURL_DISABLE_FTP) && (defined(HAVE_KRB4) || defined(HAVE_GSSAPI))
+#include "krb4.h"
+#else
+#define Curl_sec_send(a,b,c,d) -1
+#define Curl_sec_read(a,b,c,d) -1
+#endif
+
+#include <string.h>
+#include "curl_memory.h"
+#include "strerror.h"
+#include "easyif.h" /* for the Curl_convert_from_network prototype */
+/* The last #include file should be: */
+#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 == TRUE) {
+ /* 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 */
+
+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.
+ */
+
+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 */
+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 res = 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 */
+ res = Curl_write(conn, sockfd, sptr, write_len, &bytes_written);
+
+ if(CURLE_OK != res)
+ 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 res;
+}
+
+/*
+ * 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.
+ */
+CURLcode Curl_write(struct connectdata *conn,
+ curl_socket_t sockfd,
+ const void *mem,
+ size_t len,
+ ssize_t *written)
+{
+ ssize_t bytes_written;
+ CURLcode curlcode = CURLE_OK;
+ int num = (sockfd == conn->sock[SECONDARYSOCKET]);
+
+ bytes_written = conn->send[num](conn, num, mem, len, &curlcode);
+
+ *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(curlcode) {
+ 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 (CURLcode)curlcode;
+ }
+}
+
+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()
+ */
+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 retcode;
+ int num = (sockfd == conn->sock[SECONDARYSOCKET]);
+
+ bytes_written = Curl_send_plain(conn, num, mem, len, &retcode);
+
+ *written = bytes_written;
+
+ return retcode;
+}
+
+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_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.
+ */
+CURLcode Curl_client_write(struct connectdata *conn,
+ int type,
+ char *ptr,
+ size_t len)
+{
+ struct SessionHandle *data = conn->data;
+ size_t wrote;
+
+ if(0 == len)
+ len = strlen(ptr);
+
+ /* 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;
+ }
+
+ if(type & CLIENTWRITE_BODY) {
+ if((conn->protocol&PROT_FTP) && conn->proto.ftpc.transfertype == 'A') {
+#ifdef CURL_DOES_CONVERSIONS
+ /* convert from the network encoding */
+ size_t rc;
+ rc = Curl_convert_from_network(data, ptr, len);
+ /* Curl_convert_from_network calls failf if unsuccessful */
+ if(rc != CURLE_OK)
+ return rc;
+#endif /* CURL_DOES_CONVERSIONS */
+
+#ifdef CURL_DO_LINEEND_CONV
+ /* convert end-of-line markers */
+ len = convert_lineends(data, ptr, len);
+#endif /* CURL_DO_LINEEND_CONV */
+ }
+ /* If the previous block of data ended with CR and this block of data is
+ just a NL, then the length might be zero */
+ if(len) {
+ wrote = data->set.fwrite_func(ptr, 1, len, data->set.out);
+ }
+ else {
+ wrote = len;
+ }
+
+ if(CURL_WRITEFUNC_PAUSE == wrote)
+ return pausewrite(data, type, ptr, len);
+
+ if(wrote != len) {
+ failf(data, "Failed writing body (%zu != %zu)", wrote, len);
+ return CURLE_WRITE_ERROR;
+ }
+ }
+
+ 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).
+ */
+ curl_write_callback writeit=
+ data->set.fwrite_header?data->set.fwrite_header:data->set.fwrite_func;
+
+ /* Note: The header is in the host encoding
+ regardless of the ftp transfer mode (ASCII/Image) */
+
+ wrote = writeit(ptr, 1, len, 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 != len) {
+ failf (data, "Failed writing header");
+ return CURLE_WRITE_ERROR;
+ }
+ }
+
+ return CURLE_OK;
+}
+
+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 curlcode = CURLE_RECV_ERROR;
+ ssize_t nread = 0;
+ size_t bytesfromsocket = 0;
+ char *buffertofill = NULL;
+ bool pipelining = (bool)(conn->data->multi &&
+ Curl_multi_canPipeline(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, &curlcode);
+ if(nread < 0)
+ return curlcode;
+
+ 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 everthing 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;
+}
+
+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";
+ case CURLINFO_DATA_IN:
+ t = "from";
+ break;
+ case CURLINFO_HEADER_OUT:
+ w = "Header";
+ 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;
+}