60bd22620a
Following commit 0aafd77fa4, replaced the internal usage of
FORMAT_OFF_T and FORMAT_OFF_TU with the external versions that we
expect API programmers to use.
This negates the need for separate definitions which were subtly
different under different platforms/compilers.
3529 lines
112 KiB
C
3529 lines
112 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifndef CURL_DISABLE_HTTP
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NET_IF_H
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#include <net/if.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#include "urldata.h"
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#include <curl/curl.h>
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#include "transfer.h"
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#include "sendf.h"
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#include "formdata.h"
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#include "progress.h"
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#include "curl_base64.h"
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#include "cookie.h"
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#include "strequal.h"
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#include "vtls/vtls.h"
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#include "http_digest.h"
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#include "curl_ntlm.h"
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#include "curl_ntlm_wb.h"
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#include "http_negotiate.h"
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#include "url.h"
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#include "share.h"
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#include "hostip.h"
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#include "http.h"
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#include "curl_memory.h"
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#include "select.h"
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#include "parsedate.h" /* for the week day and month names */
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#include "strtoofft.h"
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#include "multiif.h"
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#include "rawstr.h"
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#include "content_encoding.h"
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#include "http_proxy.h"
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#include "warnless.h"
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#include "non-ascii.h"
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#include "bundles.h"
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#include "pipeline.h"
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#include "http2.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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/* The last #include file should be: */
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#include "memdebug.h"
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/*
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* Forward declarations.
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*/
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static int http_getsock_do(struct connectdata *conn,
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curl_socket_t *socks,
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int numsocks);
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static int http_should_fail(struct connectdata *conn);
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#ifdef USE_SSL
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static CURLcode https_connecting(struct connectdata *conn, bool *done);
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static int https_getsock(struct connectdata *conn,
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curl_socket_t *socks,
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int numsocks);
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#else
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#define https_connecting(x,y) CURLE_COULDNT_CONNECT
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#endif
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/*
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* HTTP handler interface.
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*/
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const struct Curl_handler Curl_handler_http = {
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"HTTP", /* scheme */
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Curl_http_setup_conn, /* setup_connection */
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Curl_http, /* do_it */
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Curl_http_done, /* done */
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ZERO_NULL, /* do_more */
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Curl_http_connect, /* connect_it */
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ZERO_NULL, /* connecting */
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ZERO_NULL, /* doing */
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ZERO_NULL, /* proto_getsock */
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http_getsock_do, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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ZERO_NULL, /* disconnect */
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ZERO_NULL, /* readwrite */
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PORT_HTTP, /* defport */
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CURLPROTO_HTTP, /* protocol */
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PROTOPT_NONE /* flags */
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};
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#ifdef USE_SSL
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/*
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* HTTPS handler interface.
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*/
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const struct Curl_handler Curl_handler_https = {
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"HTTPS", /* scheme */
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Curl_http_setup_conn, /* setup_connection */
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Curl_http, /* do_it */
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Curl_http_done, /* done */
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ZERO_NULL, /* do_more */
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Curl_http_connect, /* connect_it */
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https_connecting, /* connecting */
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ZERO_NULL, /* doing */
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https_getsock, /* proto_getsock */
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http_getsock_do, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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ZERO_NULL, /* disconnect */
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ZERO_NULL, /* readwrite */
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PORT_HTTPS, /* defport */
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CURLPROTO_HTTP | CURLPROTO_HTTPS, /* protocol */
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PROTOPT_SSL /* flags */
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};
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#endif
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CURLcode Curl_http_setup_conn(struct connectdata *conn)
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{
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/* allocate the HTTP-specific struct for the SessionHandle, only to survive
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during this request */
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DEBUGASSERT(conn->data->req.protop == NULL);
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conn->data->req.protop = calloc(1, sizeof(struct HTTP));
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if(!conn->data->req.protop)
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return CURLE_OUT_OF_MEMORY;
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return CURLE_OK;
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}
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/*
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* checkheaders() checks the linked list of custom HTTP headers for a
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* particular header (prefix).
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*
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* Returns a pointer to the first matching header or NULL if none matched.
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*/
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char *Curl_checkheaders(struct SessionHandle *data, const char *thisheader)
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{
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struct curl_slist *head;
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size_t thislen = strlen(thisheader);
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for(head = data->set.headers; head; head=head->next) {
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if(Curl_raw_nequal(head->data, thisheader, thislen))
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return head->data;
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}
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return NULL;
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}
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/*
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* Strip off leading and trailing whitespace from the value in the
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* given HTTP header line and return a strdupped copy. Returns NULL in
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* case of allocation failure. Returns an empty string if the header value
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* consists entirely of whitespace.
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*/
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char *Curl_copy_header_value(const char *header)
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{
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const char *start;
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const char *end;
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char *value;
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size_t len;
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DEBUGASSERT(header);
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/* Find the end of the header name */
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while(*header && (*header != ':'))
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++header;
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if(*header)
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/* Skip over colon */
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++header;
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/* Find the first non-space letter */
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start = header;
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while(*start && ISSPACE(*start))
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start++;
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/* data is in the host encoding so
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use '\r' and '\n' instead of 0x0d and 0x0a */
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end = strchr(start, '\r');
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if(!end)
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end = strchr(start, '\n');
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if(!end)
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end = strchr(start, '\0');
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if(!end)
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return NULL;
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/* skip all trailing space letters */
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while((end > start) && ISSPACE(*end))
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end--;
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/* get length of the type */
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len = end - start + 1;
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value = malloc(len + 1);
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if(!value)
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return NULL;
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memcpy(value, start, len);
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value[len] = 0; /* zero terminate */
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return value;
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}
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/*
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* http_output_basic() sets up an Authorization: header (or the proxy version)
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* for HTTP Basic authentication.
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*
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* Returns CURLcode.
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*/
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static CURLcode http_output_basic(struct connectdata *conn, bool proxy)
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{
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size_t size = 0;
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char *authorization = NULL;
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struct SessionHandle *data = conn->data;
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char **userp;
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const char *user;
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const char *pwd;
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CURLcode error;
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if(proxy) {
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userp = &conn->allocptr.proxyuserpwd;
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user = conn->proxyuser;
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pwd = conn->proxypasswd;
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}
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else {
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userp = &conn->allocptr.userpwd;
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user = conn->user;
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pwd = conn->passwd;
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}
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snprintf(data->state.buffer, sizeof(data->state.buffer), "%s:%s", user, pwd);
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error = Curl_base64_encode(data,
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data->state.buffer, strlen(data->state.buffer),
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&authorization, &size);
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if(error)
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return error;
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if(!authorization)
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return CURLE_REMOTE_ACCESS_DENIED;
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Curl_safefree(*userp);
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*userp = aprintf("%sAuthorization: Basic %s\r\n",
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proxy?"Proxy-":"",
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authorization);
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free(authorization);
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if(!*userp)
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return CURLE_OUT_OF_MEMORY;
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return CURLE_OK;
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}
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/* pickoneauth() selects the most favourable authentication method from the
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* ones available and the ones we want.
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*
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* return TRUE if one was picked
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*/
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static bool pickoneauth(struct auth *pick)
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{
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bool picked;
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/* only deal with authentication we want */
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unsigned long avail = pick->avail & pick->want;
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picked = TRUE;
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/* The order of these checks is highly relevant, as this will be the order
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of preference in case of the existence of multiple accepted types. */
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if(avail & CURLAUTH_GSSNEGOTIATE)
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pick->picked = CURLAUTH_GSSNEGOTIATE;
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else if(avail & CURLAUTH_DIGEST)
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pick->picked = CURLAUTH_DIGEST;
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else if(avail & CURLAUTH_NTLM)
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pick->picked = CURLAUTH_NTLM;
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else if(avail & CURLAUTH_NTLM_WB)
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pick->picked = CURLAUTH_NTLM_WB;
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else if(avail & CURLAUTH_BASIC)
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pick->picked = CURLAUTH_BASIC;
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else {
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pick->picked = CURLAUTH_PICKNONE; /* we select to use nothing */
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picked = FALSE;
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}
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pick->avail = CURLAUTH_NONE; /* clear it here */
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return picked;
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}
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/*
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* Curl_http_perhapsrewind()
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*
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* If we are doing POST or PUT {
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* If we have more data to send {
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* If we are doing NTLM {
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* Keep sending since we must not disconnect
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* }
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* else {
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* If there is more than just a little data left to send, close
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* the current connection by force.
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* }
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* }
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* If we have sent any data {
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* If we don't have track of all the data {
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* call app to tell it to rewind
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* }
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* else {
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* rewind internally so that the operation can restart fine
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* }
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* }
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* }
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*/
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static CURLcode http_perhapsrewind(struct connectdata *conn)
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{
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struct SessionHandle *data = conn->data;
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struct HTTP *http = data->req.protop;
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curl_off_t bytessent;
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curl_off_t expectsend = -1; /* default is unknown */
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if(!http)
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/* If this is still NULL, we have not reach very far and we can safely
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skip this rewinding stuff */
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return CURLE_OK;
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switch(data->set.httpreq) {
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case HTTPREQ_GET:
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case HTTPREQ_HEAD:
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return CURLE_OK;
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default:
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break;
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}
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bytessent = http->writebytecount;
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if(conn->bits.authneg)
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/* This is a state where we are known to be negotiating and we don't send
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any data then. */
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expectsend = 0;
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else {
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/* figure out how much data we are expected to send */
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switch(data->set.httpreq) {
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case HTTPREQ_POST:
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if(data->set.postfieldsize != -1)
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expectsend = data->set.postfieldsize;
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else if(data->set.postfields)
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expectsend = (curl_off_t)strlen(data->set.postfields);
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break;
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case HTTPREQ_PUT:
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if(data->set.infilesize != -1)
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expectsend = data->set.infilesize;
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break;
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case HTTPREQ_POST_FORM:
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expectsend = http->postsize;
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break;
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default:
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break;
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}
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}
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conn->bits.rewindaftersend = FALSE; /* default */
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if((expectsend == -1) || (expectsend > bytessent)) {
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/* There is still data left to send */
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if((data->state.authproxy.picked == CURLAUTH_NTLM) ||
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(data->state.authhost.picked == CURLAUTH_NTLM) ||
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(data->state.authproxy.picked == CURLAUTH_NTLM_WB) ||
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(data->state.authhost.picked == CURLAUTH_NTLM_WB)) {
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if(((expectsend - bytessent) < 2000) ||
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(conn->ntlm.state != NTLMSTATE_NONE) ||
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(conn->proxyntlm.state != NTLMSTATE_NONE)) {
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/* The NTLM-negotiation has started *OR* there is just a little (<2K)
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data left to send, keep on sending. */
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/* rewind data when completely done sending! */
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if(!conn->bits.authneg) {
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conn->bits.rewindaftersend = TRUE;
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infof(data, "Rewind stream after send\n");
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}
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return CURLE_OK;
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}
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if(conn->bits.close)
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/* this is already marked to get closed */
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return CURLE_OK;
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infof(data, "NTLM send, close instead of sending %"
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CURL_FORMAT_CURL_OFF_T " bytes\n",
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(curl_off_t)(expectsend - bytessent));
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}
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/* This is not NTLM or many bytes left to send: close
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*/
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conn->bits.close = TRUE;
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data->req.size = 0; /* don't download any more than 0 bytes */
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/* There still is data left to send, but this connection is marked for
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closure so we can safely do the rewind right now */
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}
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if(bytessent)
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/* we rewind now at once since if we already sent something */
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return Curl_readrewind(conn);
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return CURLE_OK;
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}
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|
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/*
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* Curl_http_auth_act() gets called when all HTTP headers have been received
|
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* and it checks what authentication methods that are available and decides
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* which one (if any) to use. It will set 'newurl' if an auth method was
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* picked.
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*/
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CURLcode Curl_http_auth_act(struct connectdata *conn)
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{
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struct SessionHandle *data = conn->data;
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bool pickhost = FALSE;
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bool pickproxy = FALSE;
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CURLcode code = CURLE_OK;
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if(100 <= data->req.httpcode && 199 >= data->req.httpcode)
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/* this is a transient response code, ignore */
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return CURLE_OK;
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|
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if(data->state.authproblem)
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return data->set.http_fail_on_error?CURLE_HTTP_RETURNED_ERROR:CURLE_OK;
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|
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if(conn->bits.user_passwd &&
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((data->req.httpcode == 401) ||
|
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(conn->bits.authneg && data->req.httpcode < 300))) {
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pickhost = pickoneauth(&data->state.authhost);
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if(!pickhost)
|
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data->state.authproblem = TRUE;
|
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}
|
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if(conn->bits.proxy_user_passwd &&
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((data->req.httpcode == 407) ||
|
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(conn->bits.authneg && data->req.httpcode < 300))) {
|
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pickproxy = pickoneauth(&data->state.authproxy);
|
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if(!pickproxy)
|
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data->state.authproblem = TRUE;
|
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}
|
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|
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if(pickhost || pickproxy) {
|
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/* In case this is GSS auth, the newurl field is already allocated so
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we must make sure to free it before allocating a new one. As figured
|
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out in bug #2284386 */
|
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Curl_safefree(data->req.newurl);
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data->req.newurl = strdup(data->change.url); /* clone URL */
|
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if(!data->req.newurl)
|
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return CURLE_OUT_OF_MEMORY;
|
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|
|
if((data->set.httpreq != HTTPREQ_GET) &&
|
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(data->set.httpreq != HTTPREQ_HEAD) &&
|
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!conn->bits.rewindaftersend) {
|
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code = http_perhapsrewind(conn);
|
|
if(code)
|
|
return code;
|
|
}
|
|
}
|
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|
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else if((data->req.httpcode < 300) &&
|
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(!data->state.authhost.done) &&
|
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conn->bits.authneg) {
|
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/* no (known) authentication available,
|
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authentication is not "done" yet and
|
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no authentication seems to be required and
|
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we didn't try HEAD or GET */
|
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if((data->set.httpreq != HTTPREQ_GET) &&
|
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(data->set.httpreq != HTTPREQ_HEAD)) {
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data->req.newurl = strdup(data->change.url); /* clone URL */
|
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if(!data->req.newurl)
|
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return CURLE_OUT_OF_MEMORY;
|
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data->state.authhost.done = TRUE;
|
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}
|
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}
|
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if(http_should_fail(conn)) {
|
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failf (data, "The requested URL returned error: %d",
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data->req.httpcode);
|
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code = CURLE_HTTP_RETURNED_ERROR;
|
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}
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|
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return code;
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}
|
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|
|
|
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/*
|
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* Output the correct authentication header depending on the auth type
|
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* and whether or not it is to a proxy.
|
|
*/
|
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static CURLcode
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output_auth_headers(struct connectdata *conn,
|
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struct auth *authstatus,
|
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const char *request,
|
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const char *path,
|
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bool proxy)
|
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{
|
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struct SessionHandle *data = conn->data;
|
|
const char *auth=NULL;
|
|
CURLcode result = CURLE_OK;
|
|
#ifdef USE_HTTP_NEGOTIATE
|
|
struct negotiatedata *negdata = proxy?
|
|
&data->state.proxyneg:&data->state.negotiate;
|
|
#endif
|
|
|
|
#ifdef CURL_DISABLE_CRYPTO_AUTH
|
|
(void)request;
|
|
(void)path;
|
|
#endif
|
|
|
|
#ifdef USE_HTTP_NEGOTIATE
|
|
negdata->state = GSS_AUTHNONE;
|
|
if((authstatus->picked == CURLAUTH_GSSNEGOTIATE) &&
|
|
negdata->context && !GSS_ERROR(negdata->status)) {
|
|
auth="GSS-Negotiate";
|
|
result = Curl_output_negotiate(conn, proxy);
|
|
if(result)
|
|
return result;
|
|
authstatus->done = TRUE;
|
|
negdata->state = GSS_AUTHSENT;
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef USE_NTLM
|
|
if(authstatus->picked == CURLAUTH_NTLM) {
|
|
auth="NTLM";
|
|
result = Curl_output_ntlm(conn, proxy);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else
|
|
#endif
|
|
#if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
|
|
if(authstatus->picked == CURLAUTH_NTLM_WB) {
|
|
auth="NTLM_WB";
|
|
result = Curl_output_ntlm_wb(conn, proxy);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else
|
|
#endif
|
|
#ifndef CURL_DISABLE_CRYPTO_AUTH
|
|
if(authstatus->picked == CURLAUTH_DIGEST) {
|
|
auth="Digest";
|
|
result = Curl_output_digest(conn,
|
|
proxy,
|
|
(const unsigned char *)request,
|
|
(const unsigned char *)path);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else
|
|
#endif
|
|
if(authstatus->picked == CURLAUTH_BASIC) {
|
|
/* Basic */
|
|
if((proxy && conn->bits.proxy_user_passwd &&
|
|
!Curl_checkheaders(data, "Proxy-authorization:")) ||
|
|
(!proxy && conn->bits.user_passwd &&
|
|
!Curl_checkheaders(data, "Authorization:"))) {
|
|
auth="Basic";
|
|
result = http_output_basic(conn, proxy);
|
|
if(result)
|
|
return result;
|
|
}
|
|
/* NOTE: this function should set 'done' TRUE, as the other auth
|
|
functions work that way */
|
|
authstatus->done = TRUE;
|
|
}
|
|
|
|
if(auth) {
|
|
infof(data, "%s auth using %s with user '%s'\n",
|
|
proxy?"Proxy":"Server", auth,
|
|
proxy?(conn->proxyuser?conn->proxyuser:""):
|
|
(conn->user?conn->user:""));
|
|
authstatus->multi = (!authstatus->done) ? TRUE : FALSE;
|
|
}
|
|
else
|
|
authstatus->multi = FALSE;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/**
|
|
* Curl_http_output_auth() setups the authentication headers for the
|
|
* host/proxy and the correct authentication
|
|
* method. conn->data->state.authdone is set to TRUE when authentication is
|
|
* done.
|
|
*
|
|
* @param conn all information about the current connection
|
|
* @param request pointer to the request keyword
|
|
* @param path pointer to the requested path
|
|
* @param proxytunnel boolean if this is the request setting up a "proxy
|
|
* tunnel"
|
|
*
|
|
* @returns CURLcode
|
|
*/
|
|
CURLcode
|
|
Curl_http_output_auth(struct connectdata *conn,
|
|
const char *request,
|
|
const char *path,
|
|
bool proxytunnel) /* TRUE if this is the request setting
|
|
up the proxy tunnel */
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct auth *authhost;
|
|
struct auth *authproxy;
|
|
|
|
DEBUGASSERT(data);
|
|
|
|
authhost = &data->state.authhost;
|
|
authproxy = &data->state.authproxy;
|
|
|
|
if((conn->bits.httpproxy && conn->bits.proxy_user_passwd) ||
|
|
conn->bits.user_passwd)
|
|
/* continue please */ ;
|
|
else {
|
|
authhost->done = TRUE;
|
|
authproxy->done = TRUE;
|
|
return CURLE_OK; /* no authentication with no user or password */
|
|
}
|
|
|
|
if(authhost->want && !authhost->picked)
|
|
/* The app has selected one or more methods, but none has been picked
|
|
so far by a server round-trip. Then we set the picked one to the
|
|
want one, and if this is one single bit it'll be used instantly. */
|
|
authhost->picked = authhost->want;
|
|
|
|
if(authproxy->want && !authproxy->picked)
|
|
/* The app has selected one or more methods, but none has been picked so
|
|
far by a proxy round-trip. Then we set the picked one to the want one,
|
|
and if this is one single bit it'll be used instantly. */
|
|
authproxy->picked = authproxy->want;
|
|
|
|
#ifndef CURL_DISABLE_PROXY
|
|
/* Send proxy authentication header if needed */
|
|
if(conn->bits.httpproxy &&
|
|
(conn->bits.tunnel_proxy == proxytunnel)) {
|
|
result = output_auth_headers(conn, authproxy, request, path, TRUE);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else
|
|
#else
|
|
(void)proxytunnel;
|
|
#endif /* CURL_DISABLE_PROXY */
|
|
/* we have no proxy so let's pretend we're done authenticating
|
|
with it */
|
|
authproxy->done = TRUE;
|
|
|
|
/* To prevent the user+password to get sent to other than the original
|
|
host due to a location-follow, we do some weirdo checks here */
|
|
if(!data->state.this_is_a_follow ||
|
|
conn->bits.netrc ||
|
|
!data->state.first_host ||
|
|
data->set.http_disable_hostname_check_before_authentication ||
|
|
Curl_raw_equal(data->state.first_host, conn->host.name)) {
|
|
result = output_auth_headers(conn, authhost, request, path, FALSE);
|
|
}
|
|
else
|
|
authhost->done = TRUE;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* Curl_http_input_auth() deals with Proxy-Authenticate: and WWW-Authenticate:
|
|
* headers. They are dealt with both in the transfer.c main loop and in the
|
|
* proxy CONNECT loop.
|
|
*/
|
|
|
|
CURLcode Curl_http_input_auth(struct connectdata *conn, bool proxy,
|
|
const char *auth) /* the first non-space */
|
|
{
|
|
/*
|
|
* This resource requires authentication
|
|
*/
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
unsigned long *availp;
|
|
struct auth *authp;
|
|
|
|
if(proxy) {
|
|
availp = &data->info.proxyauthavail;
|
|
authp = &data->state.authproxy;
|
|
}
|
|
else {
|
|
availp = &data->info.httpauthavail;
|
|
authp = &data->state.authhost;
|
|
}
|
|
|
|
/*
|
|
* Here we check if we want the specific single authentication (using ==) and
|
|
* if we do, we initiate usage of it.
|
|
*
|
|
* If the provided authentication is wanted as one out of several accepted
|
|
* types (using &), we OR this authentication type to the authavail
|
|
* variable.
|
|
*
|
|
* Note:
|
|
*
|
|
* ->picked is first set to the 'want' value (one or more bits) before the
|
|
* request is sent, and then it is again set _after_ all response 401/407
|
|
* headers have been received but then only to a single preferred method
|
|
* (bit).
|
|
*
|
|
*/
|
|
|
|
while(*auth) {
|
|
#ifdef USE_HTTP_NEGOTIATE
|
|
if(checkprefix("GSS-Negotiate", auth) ||
|
|
checkprefix("Negotiate", auth)) {
|
|
int neg;
|
|
*availp |= CURLAUTH_GSSNEGOTIATE;
|
|
authp->avail |= CURLAUTH_GSSNEGOTIATE;
|
|
|
|
if(authp->picked == CURLAUTH_GSSNEGOTIATE) {
|
|
if(data->state.negotiate.state == GSS_AUTHSENT) {
|
|
/* if we sent GSS authentication in the outgoing request and we get
|
|
this back, we're in trouble */
|
|
infof(data, "Authentication problem. Ignoring this.\n");
|
|
data->state.authproblem = TRUE;
|
|
}
|
|
else {
|
|
neg = Curl_input_negotiate(conn, proxy, auth);
|
|
if(neg == 0) {
|
|
DEBUGASSERT(!data->req.newurl);
|
|
data->req.newurl = strdup(data->change.url);
|
|
if(!data->req.newurl)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
data->state.authproblem = FALSE;
|
|
/* we received GSS auth info and we dealt with it fine */
|
|
data->state.negotiate.state = GSS_AUTHRECV;
|
|
}
|
|
else
|
|
data->state.authproblem = TRUE;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef USE_NTLM
|
|
/* NTLM support requires the SSL crypto libs */
|
|
if(checkprefix("NTLM", auth)) {
|
|
*availp |= CURLAUTH_NTLM;
|
|
authp->avail |= CURLAUTH_NTLM;
|
|
if(authp->picked == CURLAUTH_NTLM ||
|
|
authp->picked == CURLAUTH_NTLM_WB) {
|
|
/* NTLM authentication is picked and activated */
|
|
CURLcode ntlm =
|
|
Curl_input_ntlm(conn, proxy, auth);
|
|
if(CURLE_OK == ntlm) {
|
|
data->state.authproblem = FALSE;
|
|
#ifdef NTLM_WB_ENABLED
|
|
if(authp->picked == CURLAUTH_NTLM_WB) {
|
|
*availp &= ~CURLAUTH_NTLM;
|
|
authp->avail &= ~CURLAUTH_NTLM;
|
|
*availp |= CURLAUTH_NTLM_WB;
|
|
authp->avail |= CURLAUTH_NTLM_WB;
|
|
|
|
/* Get the challenge-message which will be passed to
|
|
* ntlm_auth for generating the type 3 message later */
|
|
while(*auth && ISSPACE(*auth))
|
|
auth++;
|
|
if(checkprefix("NTLM", auth)) {
|
|
auth += strlen("NTLM");
|
|
while(*auth && ISSPACE(*auth))
|
|
auth++;
|
|
if(*auth)
|
|
if((conn->challenge_header = strdup(auth)) == NULL)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
else {
|
|
infof(data, "Authentication problem. Ignoring this.\n");
|
|
data->state.authproblem = TRUE;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
#ifndef CURL_DISABLE_CRYPTO_AUTH
|
|
if(checkprefix("Digest", auth)) {
|
|
if((authp->avail & CURLAUTH_DIGEST) != 0) {
|
|
infof(data, "Ignoring duplicate digest auth header.\n");
|
|
}
|
|
else {
|
|
CURLdigest dig;
|
|
*availp |= CURLAUTH_DIGEST;
|
|
authp->avail |= CURLAUTH_DIGEST;
|
|
|
|
/* We call this function on input Digest headers even if Digest
|
|
* authentication isn't activated yet, as we need to store the
|
|
* incoming data from this header in case we are gonna use
|
|
* Digest. */
|
|
dig = Curl_input_digest(conn, proxy, auth);
|
|
|
|
if(CURLDIGEST_FINE != dig) {
|
|
infof(data, "Authentication problem. Ignoring this.\n");
|
|
data->state.authproblem = TRUE;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
if(checkprefix("Basic", auth)) {
|
|
*availp |= CURLAUTH_BASIC;
|
|
authp->avail |= CURLAUTH_BASIC;
|
|
if(authp->picked == CURLAUTH_BASIC) {
|
|
/* We asked for Basic authentication but got a 40X back
|
|
anyway, which basically means our name+password isn't
|
|
valid. */
|
|
authp->avail = CURLAUTH_NONE;
|
|
infof(data, "Authentication problem. Ignoring this.\n");
|
|
data->state.authproblem = TRUE;
|
|
}
|
|
}
|
|
|
|
/* there may be multiple methods on one line, so keep reading */
|
|
while(*auth && *auth != ',') /* read up to the next comma */
|
|
auth++;
|
|
if(*auth == ',') /* if we're on a comma, skip it */
|
|
auth++;
|
|
while(*auth && ISSPACE(*auth))
|
|
auth++;
|
|
}
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/**
|
|
* http_should_fail() determines whether an HTTP response has gotten us
|
|
* into an error state or not.
|
|
*
|
|
* @param conn all information about the current connection
|
|
*
|
|
* @retval 0 communications should continue
|
|
*
|
|
* @retval 1 communications should not continue
|
|
*/
|
|
static int http_should_fail(struct connectdata *conn)
|
|
{
|
|
struct SessionHandle *data;
|
|
int httpcode;
|
|
|
|
DEBUGASSERT(conn);
|
|
data = conn->data;
|
|
DEBUGASSERT(data);
|
|
|
|
httpcode = data->req.httpcode;
|
|
|
|
/*
|
|
** If we haven't been asked to fail on error,
|
|
** don't fail.
|
|
*/
|
|
if(!data->set.http_fail_on_error)
|
|
return 0;
|
|
|
|
/*
|
|
** Any code < 400 is never terminal.
|
|
*/
|
|
if(httpcode < 400)
|
|
return 0;
|
|
|
|
if(data->state.resume_from &&
|
|
(data->set.httpreq==HTTPREQ_GET) &&
|
|
(httpcode == 416)) {
|
|
/* "Requested Range Not Satisfiable", just proceed and
|
|
pretend this is no error */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
** Any code >= 400 that's not 401 or 407 is always
|
|
** a terminal error
|
|
*/
|
|
if((httpcode != 401) &&
|
|
(httpcode != 407))
|
|
return 1;
|
|
|
|
/*
|
|
** All we have left to deal with is 401 and 407
|
|
*/
|
|
DEBUGASSERT((httpcode == 401) || (httpcode == 407));
|
|
|
|
/*
|
|
** Examine the current authentication state to see if this
|
|
** is an error. The idea is for this function to get
|
|
** called after processing all the headers in a response
|
|
** message. So, if we've been to asked to authenticate a
|
|
** particular stage, and we've done it, we're OK. But, if
|
|
** we're already completely authenticated, it's not OK to
|
|
** get another 401 or 407.
|
|
**
|
|
** It is possible for authentication to go stale such that
|
|
** the client needs to reauthenticate. Once that info is
|
|
** available, use it here.
|
|
*/
|
|
|
|
/*
|
|
** Either we're not authenticating, or we're supposed to
|
|
** be authenticating something else. This is an error.
|
|
*/
|
|
if((httpcode == 401) && !conn->bits.user_passwd)
|
|
return TRUE;
|
|
if((httpcode == 407) && !conn->bits.proxy_user_passwd)
|
|
return TRUE;
|
|
|
|
return data->state.authproblem;
|
|
}
|
|
|
|
/*
|
|
* readmoredata() is a "fread() emulation" to provide POST and/or request
|
|
* data. It is used when a huge POST is to be made and the entire chunk wasn't
|
|
* sent in the first send(). This function will then be called from the
|
|
* transfer.c loop when more data is to be sent to the peer.
|
|
*
|
|
* Returns the amount of bytes it filled the buffer with.
|
|
*/
|
|
static size_t readmoredata(char *buffer,
|
|
size_t size,
|
|
size_t nitems,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct HTTP *http = conn->data->req.protop;
|
|
size_t fullsize = size * nitems;
|
|
|
|
if(0 == http->postsize)
|
|
/* nothing to return */
|
|
return 0;
|
|
|
|
/* make sure that a HTTP request is never sent away chunked! */
|
|
conn->data->req.forbidchunk = (http->sending == HTTPSEND_REQUEST)?TRUE:FALSE;
|
|
|
|
if(http->postsize <= (curl_off_t)fullsize) {
|
|
memcpy(buffer, http->postdata, (size_t)http->postsize);
|
|
fullsize = (size_t)http->postsize;
|
|
|
|
if(http->backup.postsize) {
|
|
/* move backup data into focus and continue on that */
|
|
http->postdata = http->backup.postdata;
|
|
http->postsize = http->backup.postsize;
|
|
conn->fread_func = http->backup.fread_func;
|
|
conn->fread_in = http->backup.fread_in;
|
|
|
|
http->sending++; /* move one step up */
|
|
|
|
http->backup.postsize=0;
|
|
}
|
|
else
|
|
http->postsize = 0;
|
|
|
|
return fullsize;
|
|
}
|
|
|
|
memcpy(buffer, http->postdata, fullsize);
|
|
http->postdata += fullsize;
|
|
http->postsize -= fullsize;
|
|
|
|
return fullsize;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/* add_buffer functions */
|
|
|
|
/*
|
|
* Curl_add_buffer_init() sets up and returns a fine buffer struct
|
|
*/
|
|
Curl_send_buffer *Curl_add_buffer_init(void)
|
|
{
|
|
return calloc(1, sizeof(Curl_send_buffer));
|
|
}
|
|
|
|
/*
|
|
* Curl_add_buffer_send() sends a header buffer and frees all associated
|
|
* memory. Body data may be appended to the header data if desired.
|
|
*
|
|
* Returns CURLcode
|
|
*/
|
|
CURLcode Curl_add_buffer_send(Curl_send_buffer *in,
|
|
struct connectdata *conn,
|
|
|
|
/* add the number of sent bytes to this
|
|
counter */
|
|
long *bytes_written,
|
|
|
|
/* how much of the buffer contains body data */
|
|
size_t included_body_bytes,
|
|
int socketindex)
|
|
|
|
{
|
|
ssize_t amount;
|
|
CURLcode res;
|
|
char *ptr;
|
|
size_t size;
|
|
struct HTTP *http = conn->data->req.protop;
|
|
size_t sendsize;
|
|
curl_socket_t sockfd;
|
|
size_t headersize;
|
|
|
|
DEBUGASSERT(socketindex <= SECONDARYSOCKET);
|
|
|
|
sockfd = conn->sock[socketindex];
|
|
|
|
/* The looping below is required since we use non-blocking sockets, but due
|
|
to the circumstances we will just loop and try again and again etc */
|
|
|
|
ptr = in->buffer;
|
|
size = in->size_used;
|
|
|
|
headersize = size - included_body_bytes; /* the initial part that isn't body
|
|
is header */
|
|
|
|
DEBUGASSERT(size > included_body_bytes);
|
|
|
|
res = Curl_convert_to_network(conn->data, ptr, headersize);
|
|
/* Curl_convert_to_network calls failf if unsuccessful */
|
|
if(res) {
|
|
/* conversion failed, free memory and return to the caller */
|
|
if(in->buffer)
|
|
free(in->buffer);
|
|
free(in);
|
|
return res;
|
|
}
|
|
|
|
if(conn->handler->flags & PROTOPT_SSL) {
|
|
/* We never send more than CURL_MAX_WRITE_SIZE bytes in one single chunk
|
|
when we speak HTTPS, as if only a fraction of it is sent now, this data
|
|
needs to fit into the normal read-callback buffer later on and that
|
|
buffer is using this size.
|
|
*/
|
|
|
|
sendsize= (size > CURL_MAX_WRITE_SIZE)?CURL_MAX_WRITE_SIZE:size;
|
|
|
|
/* OpenSSL is very picky and we must send the SAME buffer pointer to the
|
|
library when we attempt to re-send this buffer. Sending the same data
|
|
is not enough, we must use the exact same address. For this reason, we
|
|
must copy the data to the uploadbuffer first, since that is the buffer
|
|
we will be using if this send is retried later.
|
|
*/
|
|
memcpy(conn->data->state.uploadbuffer, ptr, sendsize);
|
|
ptr = conn->data->state.uploadbuffer;
|
|
}
|
|
else
|
|
sendsize = size;
|
|
|
|
res = Curl_write(conn, sockfd, ptr, sendsize, &amount);
|
|
|
|
if(CURLE_OK == res) {
|
|
/*
|
|
* Note that we may not send the entire chunk at once, and we have a set
|
|
* number of data bytes at the end of the big buffer (out of which we may
|
|
* only send away a part).
|
|
*/
|
|
/* how much of the header that was sent */
|
|
size_t headlen = (size_t)amount>headersize?headersize:(size_t)amount;
|
|
size_t bodylen = amount - headlen;
|
|
|
|
if(conn->data->set.verbose) {
|
|
/* this data _may_ contain binary stuff */
|
|
Curl_debug(conn->data, CURLINFO_HEADER_OUT, ptr, headlen, conn);
|
|
if(bodylen) {
|
|
/* there was body data sent beyond the initial header part, pass that
|
|
on to the debug callback too */
|
|
Curl_debug(conn->data, CURLINFO_DATA_OUT,
|
|
ptr+headlen, bodylen, conn);
|
|
}
|
|
}
|
|
if(bodylen)
|
|
/* since we sent a piece of the body here, up the byte counter for it
|
|
accordingly */
|
|
http->writebytecount += bodylen;
|
|
|
|
/* 'amount' can never be a very large value here so typecasting it so a
|
|
signed 31 bit value should not cause problems even if ssize_t is
|
|
64bit */
|
|
*bytes_written += (long)amount;
|
|
|
|
if(http) {
|
|
if((size_t)amount != size) {
|
|
/* The whole request could not be sent in one system call. We must
|
|
queue it up and send it later when we get the chance. We must not
|
|
loop here and wait until it might work again. */
|
|
|
|
size -= amount;
|
|
|
|
ptr = in->buffer + amount;
|
|
|
|
/* backup the currently set pointers */
|
|
http->backup.fread_func = conn->fread_func;
|
|
http->backup.fread_in = conn->fread_in;
|
|
http->backup.postdata = http->postdata;
|
|
http->backup.postsize = http->postsize;
|
|
|
|
/* set the new pointers for the request-sending */
|
|
conn->fread_func = (curl_read_callback)readmoredata;
|
|
conn->fread_in = (void *)conn;
|
|
http->postdata = ptr;
|
|
http->postsize = (curl_off_t)size;
|
|
|
|
http->send_buffer = in;
|
|
http->sending = HTTPSEND_REQUEST;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
http->sending = HTTPSEND_BODY;
|
|
/* the full buffer was sent, clean up and return */
|
|
}
|
|
else {
|
|
if((size_t)amount != size)
|
|
/* We have no continue-send mechanism now, fail. This can only happen
|
|
when this function is used from the CONNECT sending function. We
|
|
currently (stupidly) assume that the whole request is always sent
|
|
away in the first single chunk.
|
|
|
|
This needs FIXing.
|
|
*/
|
|
return CURLE_SEND_ERROR;
|
|
else
|
|
conn->writechannel_inuse = FALSE;
|
|
}
|
|
}
|
|
if(in->buffer)
|
|
free(in->buffer);
|
|
free(in);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
/*
|
|
* add_bufferf() add the formatted input to the buffer.
|
|
*/
|
|
CURLcode Curl_add_bufferf(Curl_send_buffer *in, const char *fmt, ...)
|
|
{
|
|
char *s;
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
s = vaprintf(fmt, ap); /* this allocs a new string to append */
|
|
va_end(ap);
|
|
|
|
if(s) {
|
|
CURLcode result = Curl_add_buffer(in, s, strlen(s));
|
|
free(s);
|
|
return result;
|
|
}
|
|
/* If we failed, we cleanup the whole buffer and return error */
|
|
if(in->buffer)
|
|
free(in->buffer);
|
|
free(in);
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
/*
|
|
* add_buffer() appends a memory chunk to the existing buffer
|
|
*/
|
|
CURLcode Curl_add_buffer(Curl_send_buffer *in, const void *inptr, size_t size)
|
|
{
|
|
char *new_rb;
|
|
size_t new_size;
|
|
|
|
if(~size < in->size_used) {
|
|
/* If resulting used size of send buffer would wrap size_t, cleanup
|
|
the whole buffer and return error. Otherwise the required buffer
|
|
size will fit into a single allocatable memory chunk */
|
|
Curl_safefree(in->buffer);
|
|
free(in);
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if(!in->buffer ||
|
|
((in->size_used + size) > (in->size_max - 1))) {
|
|
|
|
/* If current buffer size isn't enough to hold the result, use a
|
|
buffer size that doubles the required size. If this new size
|
|
would wrap size_t, then just use the largest possible one */
|
|
|
|
if((size > (size_t)-1/2) || (in->size_used > (size_t)-1/2) ||
|
|
(~(size*2) < (in->size_used*2)))
|
|
new_size = (size_t)-1;
|
|
else
|
|
new_size = (in->size_used+size)*2;
|
|
|
|
if(in->buffer)
|
|
/* we have a buffer, enlarge the existing one */
|
|
new_rb = realloc(in->buffer, new_size);
|
|
else
|
|
/* create a new buffer */
|
|
new_rb = malloc(new_size);
|
|
|
|
if(!new_rb) {
|
|
/* If we failed, we cleanup the whole buffer and return error */
|
|
Curl_safefree(in->buffer);
|
|
free(in);
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
in->buffer = new_rb;
|
|
in->size_max = new_size;
|
|
}
|
|
memcpy(&in->buffer[in->size_used], inptr, size);
|
|
|
|
in->size_used += size;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* end of the add_buffer functions */
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
/*
|
|
* Curl_compareheader()
|
|
*
|
|
* Returns TRUE if 'headerline' contains the 'header' with given 'content'.
|
|
* Pass headers WITH the colon.
|
|
*/
|
|
bool
|
|
Curl_compareheader(const char *headerline, /* line to check */
|
|
const char *header, /* header keyword _with_ colon */
|
|
const char *content) /* content string to find */
|
|
{
|
|
/* RFC2616, section 4.2 says: "Each header field consists of a name followed
|
|
* by a colon (":") and the field value. Field names are case-insensitive.
|
|
* The field value MAY be preceded by any amount of LWS, though a single SP
|
|
* is preferred." */
|
|
|
|
size_t hlen = strlen(header);
|
|
size_t clen;
|
|
size_t len;
|
|
const char *start;
|
|
const char *end;
|
|
|
|
if(!Curl_raw_nequal(headerline, header, hlen))
|
|
return FALSE; /* doesn't start with header */
|
|
|
|
/* pass the header */
|
|
start = &headerline[hlen];
|
|
|
|
/* pass all white spaces */
|
|
while(*start && ISSPACE(*start))
|
|
start++;
|
|
|
|
/* find the end of the header line */
|
|
end = strchr(start, '\r'); /* lines end with CRLF */
|
|
if(!end) {
|
|
/* in case there's a non-standard compliant line here */
|
|
end = strchr(start, '\n');
|
|
|
|
if(!end)
|
|
/* hm, there's no line ending here, use the zero byte! */
|
|
end = strchr(start, '\0');
|
|
}
|
|
|
|
len = end-start; /* length of the content part of the input line */
|
|
clen = strlen(content); /* length of the word to find */
|
|
|
|
/* find the content string in the rest of the line */
|
|
for(;len>=clen;len--, start++) {
|
|
if(Curl_raw_nequal(start, content, clen))
|
|
return TRUE; /* match! */
|
|
}
|
|
|
|
return FALSE; /* no match */
|
|
}
|
|
|
|
/*
|
|
* Curl_http_connect() performs HTTP stuff to do at connect-time, called from
|
|
* the generic Curl_connect().
|
|
*/
|
|
CURLcode Curl_http_connect(struct connectdata *conn, bool *done)
|
|
{
|
|
CURLcode result;
|
|
|
|
/* We default to persistent connections. We set this already in this connect
|
|
function to make the re-use checks properly be able to check this bit. */
|
|
conn->bits.close = FALSE;
|
|
|
|
/* the CONNECT procedure might not have been completed */
|
|
result = Curl_proxy_connect(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
if(conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT)
|
|
/* nothing else to do except wait right now - we're not done here. */
|
|
return CURLE_OK;
|
|
|
|
if(conn->given->flags & PROTOPT_SSL) {
|
|
/* perform SSL initialization */
|
|
result = https_connecting(conn, done);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else
|
|
*done = TRUE;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* this returns the socket to wait for in the DO and DOING state for the multi
|
|
interface and then we're always _sending_ a request and thus we wait for
|
|
the single socket to become writable only */
|
|
static int http_getsock_do(struct connectdata *conn,
|
|
curl_socket_t *socks,
|
|
int numsocks)
|
|
{
|
|
/* write mode */
|
|
(void)numsocks; /* unused, we trust it to be at least 1 */
|
|
socks[0] = conn->sock[FIRSTSOCKET];
|
|
return GETSOCK_WRITESOCK(0);
|
|
}
|
|
|
|
#ifdef USE_SSL
|
|
static CURLcode https_connecting(struct connectdata *conn, bool *done)
|
|
{
|
|
CURLcode result;
|
|
DEBUGASSERT((conn) && (conn->handler->flags & PROTOPT_SSL));
|
|
|
|
/* perform SSL initialization for this socket */
|
|
result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, done);
|
|
if(result)
|
|
conn->bits.close = TRUE; /* a failed connection is marked for closure
|
|
to prevent (bad) re-use or similar */
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
#if defined(USE_SSLEAY) || defined(USE_GNUTLS) || defined(USE_SCHANNEL) || \
|
|
defined(USE_DARWINSSL)
|
|
/* This function is for OpenSSL, GnuTLS, darwinssl, and schannel only.
|
|
It should be made to query the generic SSL layer instead. */
|
|
static int https_getsock(struct connectdata *conn,
|
|
curl_socket_t *socks,
|
|
int numsocks)
|
|
{
|
|
if(conn->handler->flags & PROTOPT_SSL) {
|
|
struct ssl_connect_data *connssl = &conn->ssl[FIRSTSOCKET];
|
|
|
|
if(!numsocks)
|
|
return GETSOCK_BLANK;
|
|
|
|
if(connssl->connecting_state == ssl_connect_2_writing) {
|
|
/* write mode */
|
|
socks[0] = conn->sock[FIRSTSOCKET];
|
|
return GETSOCK_WRITESOCK(0);
|
|
}
|
|
else if(connssl->connecting_state == ssl_connect_2_reading) {
|
|
/* read mode */
|
|
socks[0] = conn->sock[FIRSTSOCKET];
|
|
return GETSOCK_READSOCK(0);
|
|
}
|
|
}
|
|
return CURLE_OK;
|
|
}
|
|
#else
|
|
#ifdef USE_SSL
|
|
static int https_getsock(struct connectdata *conn,
|
|
curl_socket_t *socks,
|
|
int numsocks)
|
|
{
|
|
(void)conn;
|
|
(void)socks;
|
|
(void)numsocks;
|
|
return GETSOCK_BLANK;
|
|
}
|
|
#endif /* USE_SSL */
|
|
#endif /* USE_SSLEAY || USE_GNUTLS || USE_SCHANNEL */
|
|
|
|
/*
|
|
* Curl_http_done() gets called from Curl_done() after a single HTTP request
|
|
* has been performed.
|
|
*/
|
|
|
|
CURLcode Curl_http_done(struct connectdata *conn,
|
|
CURLcode status, bool premature)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
struct HTTP *http =data->req.protop;
|
|
|
|
Curl_unencode_cleanup(conn);
|
|
|
|
/* set the proper values (possibly modified on POST) */
|
|
conn->fread_func = data->set.fread_func; /* restore */
|
|
conn->fread_in = data->set.in; /* restore */
|
|
conn->seek_func = data->set.seek_func; /* restore */
|
|
conn->seek_client = data->set.seek_client; /* restore */
|
|
|
|
if(http == NULL)
|
|
return CURLE_OK;
|
|
|
|
if(http->send_buffer) {
|
|
Curl_send_buffer *buff = http->send_buffer;
|
|
|
|
free(buff->buffer);
|
|
free(buff);
|
|
http->send_buffer = NULL; /* clear the pointer */
|
|
}
|
|
|
|
if(HTTPREQ_POST_FORM == data->set.httpreq) {
|
|
data->req.bytecount = http->readbytecount + http->writebytecount;
|
|
|
|
Curl_formclean(&http->sendit); /* Now free that whole lot */
|
|
if(http->form.fp) {
|
|
/* a file being uploaded was left opened, close it! */
|
|
fclose(http->form.fp);
|
|
http->form.fp = NULL;
|
|
}
|
|
}
|
|
else if(HTTPREQ_PUT == data->set.httpreq)
|
|
data->req.bytecount = http->readbytecount + http->writebytecount;
|
|
|
|
if(status != CURLE_OK)
|
|
return (status);
|
|
|
|
if(!premature && /* this check is pointless when DONE is called before the
|
|
entire operation is complete */
|
|
!conn->bits.retry &&
|
|
!data->set.connect_only &&
|
|
((http->readbytecount +
|
|
data->req.headerbytecount -
|
|
data->req.deductheadercount)) <= 0) {
|
|
/* If this connection isn't simply closed to be retried, AND nothing was
|
|
read from the HTTP server (that counts), this can't be right so we
|
|
return an error here */
|
|
failf(data, "Empty reply from server");
|
|
return CURLE_GOT_NOTHING;
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
|
|
/*
|
|
* Determine if we should use HTTP 1.1 (OR BETTER) for this request. Reasons
|
|
* to avoid it include:
|
|
*
|
|
* - if the user specifically requested HTTP 1.0
|
|
* - if the server we are connected to only supports 1.0
|
|
* - if any server previously contacted to handle this request only supports
|
|
* 1.0.
|
|
*/
|
|
static bool use_http_1_1plus(const struct SessionHandle *data,
|
|
const struct connectdata *conn)
|
|
{
|
|
return ((data->set.httpversion >= CURL_HTTP_VERSION_1_1) ||
|
|
((data->set.httpversion != CURL_HTTP_VERSION_1_0) &&
|
|
((conn->httpversion == 11) ||
|
|
((conn->httpversion != 10) &&
|
|
(data->state.httpversion != 10))))) ? TRUE : FALSE;
|
|
}
|
|
|
|
/* check and possibly add an Expect: header */
|
|
static CURLcode expect100(struct SessionHandle *data,
|
|
struct connectdata *conn,
|
|
Curl_send_buffer *req_buffer)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
const char *ptr;
|
|
data->state.expect100header = FALSE; /* default to false unless it is set
|
|
to TRUE below */
|
|
if(use_http_1_1plus(data, conn)) {
|
|
/* if not doing HTTP 1.0 or disabled explicitly, we add a Expect:
|
|
100-continue to the headers which actually speeds up post operations
|
|
(as there is one packet coming back from the web server) */
|
|
ptr = Curl_checkheaders(data, "Expect:");
|
|
if(ptr) {
|
|
data->state.expect100header =
|
|
Curl_compareheader(ptr, "Expect:", "100-continue");
|
|
}
|
|
else {
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"Expect: 100-continue\r\n");
|
|
if(result == CURLE_OK)
|
|
data->state.expect100header = TRUE;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
CURLcode Curl_add_custom_headers(struct connectdata *conn,
|
|
Curl_send_buffer *req_buffer)
|
|
{
|
|
char *ptr;
|
|
struct curl_slist *headers=conn->data->set.headers;
|
|
|
|
while(headers) {
|
|
ptr = strchr(headers->data, ':');
|
|
if(ptr) {
|
|
/* we require a colon for this to be a true header */
|
|
|
|
ptr++; /* pass the colon */
|
|
while(*ptr && ISSPACE(*ptr))
|
|
ptr++;
|
|
|
|
if(*ptr) {
|
|
/* only send this if the contents was non-blank */
|
|
|
|
if(conn->allocptr.host &&
|
|
/* a Host: header was sent already, don't pass on any custom Host:
|
|
header as that will produce *two* in the same request! */
|
|
checkprefix("Host:", headers->data))
|
|
;
|
|
else if(conn->data->set.httpreq == HTTPREQ_POST_FORM &&
|
|
/* this header (extended by formdata.c) is sent later */
|
|
checkprefix("Content-Type:", headers->data))
|
|
;
|
|
else if(conn->bits.authneg &&
|
|
/* while doing auth neg, don't allow the custom length since
|
|
we will force length zero then */
|
|
checkprefix("Content-Length", headers->data))
|
|
;
|
|
else if(conn->allocptr.te &&
|
|
/* when asking for Transfer-Encoding, don't pass on a custom
|
|
Connection: */
|
|
checkprefix("Connection", headers->data))
|
|
;
|
|
else {
|
|
CURLcode result = Curl_add_bufferf(req_buffer, "%s\r\n",
|
|
headers->data);
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
ptr = strchr(headers->data, ';');
|
|
if(ptr) {
|
|
|
|
ptr++; /* pass the semicolon */
|
|
while(*ptr && ISSPACE(*ptr))
|
|
ptr++;
|
|
|
|
if(*ptr) {
|
|
/* this may be used for something else in the future */
|
|
}
|
|
else {
|
|
if(*(--ptr) == ';') {
|
|
CURLcode result;
|
|
|
|
/* send no-value custom header if terminated by semicolon */
|
|
*ptr = ':';
|
|
result = Curl_add_bufferf(req_buffer, "%s\r\n",
|
|
headers->data);
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
headers = headers->next;
|
|
}
|
|
return CURLE_OK;
|
|
}
|
|
|
|
CURLcode Curl_add_timecondition(struct SessionHandle *data,
|
|
Curl_send_buffer *req_buffer)
|
|
{
|
|
const struct tm *tm;
|
|
char *buf = data->state.buffer;
|
|
CURLcode result = CURLE_OK;
|
|
struct tm keeptime;
|
|
|
|
result = Curl_gmtime(data->set.timevalue, &keeptime);
|
|
if(result) {
|
|
failf(data, "Invalid TIMEVALUE");
|
|
return result;
|
|
}
|
|
tm = &keeptime;
|
|
|
|
/* The If-Modified-Since header family should have their times set in
|
|
* GMT as RFC2616 defines: "All HTTP date/time stamps MUST be
|
|
* represented in Greenwich Mean Time (GMT), without exception. For the
|
|
* purposes of HTTP, GMT is exactly equal to UTC (Coordinated Universal
|
|
* Time)." (see page 20 of RFC2616).
|
|
*/
|
|
|
|
/* format: "Tue, 15 Nov 1994 12:45:26 GMT" */
|
|
snprintf(buf, BUFSIZE-1,
|
|
"%s, %02d %s %4d %02d:%02d:%02d GMT",
|
|
Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
|
|
tm->tm_mday,
|
|
Curl_month[tm->tm_mon],
|
|
tm->tm_year + 1900,
|
|
tm->tm_hour,
|
|
tm->tm_min,
|
|
tm->tm_sec);
|
|
|
|
switch(data->set.timecondition) {
|
|
case CURL_TIMECOND_IFMODSINCE:
|
|
default:
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"If-Modified-Since: %s\r\n", buf);
|
|
break;
|
|
case CURL_TIMECOND_IFUNMODSINCE:
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"If-Unmodified-Since: %s\r\n", buf);
|
|
break;
|
|
case CURL_TIMECOND_LASTMOD:
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"Last-Modified: %s\r\n", buf);
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Curl_http() gets called from the generic Curl_do() function when a HTTP
|
|
* request is to be performed. This creates and sends a properly constructed
|
|
* HTTP request.
|
|
*/
|
|
CURLcode Curl_http(struct connectdata *conn, bool *done)
|
|
{
|
|
struct SessionHandle *data=conn->data;
|
|
CURLcode result=CURLE_OK;
|
|
struct HTTP *http;
|
|
const char *ppath = data->state.path;
|
|
bool paste_ftp_userpwd = FALSE;
|
|
char ftp_typecode[sizeof("/;type=?")] = "";
|
|
const char *host = conn->host.name;
|
|
const char *te = ""; /* transfer-encoding */
|
|
const char *ptr;
|
|
const char *request;
|
|
Curl_HttpReq httpreq = data->set.httpreq;
|
|
char *addcookies = NULL;
|
|
curl_off_t included_body = 0;
|
|
const char *httpstring;
|
|
Curl_send_buffer *req_buffer;
|
|
curl_off_t postsize = 0; /* curl_off_t to handle large file sizes */
|
|
int seekerr = CURL_SEEKFUNC_OK;
|
|
|
|
/* Always consider the DO phase done after this function call, even if there
|
|
may be parts of the request that is not yet sent, since we can deal with
|
|
the rest of the request in the PERFORM phase. */
|
|
*done = TRUE;
|
|
|
|
http = data->req.protop;
|
|
|
|
if(!data->state.this_is_a_follow) {
|
|
/* this is not a followed location, get the original host name */
|
|
if(data->state.first_host)
|
|
/* Free to avoid leaking memory on multiple requests*/
|
|
free(data->state.first_host);
|
|
|
|
data->state.first_host = strdup(conn->host.name);
|
|
if(!data->state.first_host)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
http->writebytecount = http->readbytecount = 0;
|
|
|
|
if((conn->handler->protocol&(CURLPROTO_HTTP|CURLPROTO_FTP)) &&
|
|
data->set.upload) {
|
|
httpreq = HTTPREQ_PUT;
|
|
}
|
|
|
|
/* Now set the 'request' pointer to the proper request string */
|
|
if(data->set.str[STRING_CUSTOMREQUEST])
|
|
request = data->set.str[STRING_CUSTOMREQUEST];
|
|
else {
|
|
if(data->set.opt_no_body)
|
|
request = "HEAD";
|
|
else {
|
|
DEBUGASSERT((httpreq > HTTPREQ_NONE) && (httpreq < HTTPREQ_LAST));
|
|
switch(httpreq) {
|
|
case HTTPREQ_POST:
|
|
case HTTPREQ_POST_FORM:
|
|
request = "POST";
|
|
break;
|
|
case HTTPREQ_PUT:
|
|
request = "PUT";
|
|
break;
|
|
default: /* this should never happen */
|
|
case HTTPREQ_GET:
|
|
request = "GET";
|
|
break;
|
|
case HTTPREQ_HEAD:
|
|
request = "HEAD";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* The User-Agent string might have been allocated in url.c already, because
|
|
it might have been used in the proxy connect, but if we have got a header
|
|
with the user-agent string specified, we erase the previously made string
|
|
here. */
|
|
if(Curl_checkheaders(data, "User-Agent:") && conn->allocptr.uagent) {
|
|
free(conn->allocptr.uagent);
|
|
conn->allocptr.uagent=NULL;
|
|
}
|
|
|
|
/* setup the authentication headers */
|
|
result = Curl_http_output_auth(conn, request, ppath, FALSE);
|
|
if(result)
|
|
return result;
|
|
|
|
if((data->state.authhost.multi || data->state.authproxy.multi) &&
|
|
(httpreq != HTTPREQ_GET) &&
|
|
(httpreq != HTTPREQ_HEAD)) {
|
|
/* Auth is required and we are not authenticated yet. Make a PUT or POST
|
|
with content-length zero as a "probe". */
|
|
conn->bits.authneg = TRUE;
|
|
}
|
|
else
|
|
conn->bits.authneg = FALSE;
|
|
|
|
Curl_safefree(conn->allocptr.ref);
|
|
if(data->change.referer && !Curl_checkheaders(data, "Referer:")) {
|
|
conn->allocptr.ref = aprintf("Referer: %s\r\n", data->change.referer);
|
|
if(!conn->allocptr.ref)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
else
|
|
conn->allocptr.ref = NULL;
|
|
|
|
if(data->set.str[STRING_COOKIE] && !Curl_checkheaders(data, "Cookie:"))
|
|
addcookies = data->set.str[STRING_COOKIE];
|
|
|
|
if(!Curl_checkheaders(data, "Accept-Encoding:") &&
|
|
data->set.str[STRING_ENCODING]) {
|
|
Curl_safefree(conn->allocptr.accept_encoding);
|
|
conn->allocptr.accept_encoding =
|
|
aprintf("Accept-Encoding: %s\r\n", data->set.str[STRING_ENCODING]);
|
|
if(!conn->allocptr.accept_encoding)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
#ifdef HAVE_LIBZ
|
|
/* we only consider transfer-encoding magic if libz support is built-in */
|
|
|
|
if(!Curl_checkheaders(data, "TE:") && data->set.http_transfer_encoding) {
|
|
/* When we are to insert a TE: header in the request, we must also insert
|
|
TE in a Connection: header, so we need to merge the custom provided
|
|
Connection: header and prevent the original to get sent. Note that if
|
|
the user has inserted his/hers own TE: header we don't do this magic
|
|
but then assume that the user will handle it all! */
|
|
char *cptr = Curl_checkheaders(data, "Connection:");
|
|
#define TE_HEADER "TE: gzip\r\n"
|
|
|
|
Curl_safefree(conn->allocptr.te);
|
|
|
|
/* Create the (updated) Connection: header */
|
|
conn->allocptr.te = cptr? aprintf("%s, TE\r\n" TE_HEADER, cptr):
|
|
strdup("Connection: TE\r\n" TE_HEADER);
|
|
|
|
if(!conn->allocptr.te)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
#endif
|
|
|
|
ptr = Curl_checkheaders(data, "Transfer-Encoding:");
|
|
if(ptr) {
|
|
/* Some kind of TE is requested, check if 'chunked' is chosen */
|
|
data->req.upload_chunky =
|
|
Curl_compareheader(ptr, "Transfer-Encoding:", "chunked");
|
|
}
|
|
else {
|
|
if((conn->handler->protocol&CURLPROTO_HTTP) &&
|
|
data->set.upload &&
|
|
(data->set.infilesize == -1)) {
|
|
if(conn->bits.authneg)
|
|
/* don't enable chunked during auth neg */
|
|
;
|
|
else if(use_http_1_1plus(data, conn)) {
|
|
/* HTTP, upload, unknown file size and not HTTP 1.0 */
|
|
data->req.upload_chunky = TRUE;
|
|
}
|
|
else {
|
|
failf(data, "Chunky upload is not supported by HTTP 1.0");
|
|
return CURLE_UPLOAD_FAILED;
|
|
}
|
|
}
|
|
else {
|
|
/* else, no chunky upload */
|
|
data->req.upload_chunky = FALSE;
|
|
}
|
|
|
|
if(data->req.upload_chunky)
|
|
te = "Transfer-Encoding: chunked\r\n";
|
|
}
|
|
|
|
Curl_safefree(conn->allocptr.host);
|
|
|
|
ptr = Curl_checkheaders(data, "Host:");
|
|
if(ptr && (!data->state.this_is_a_follow ||
|
|
Curl_raw_equal(data->state.first_host, conn->host.name))) {
|
|
#if !defined(CURL_DISABLE_COOKIES)
|
|
/* If we have a given custom Host: header, we extract the host name in
|
|
order to possibly use it for cookie reasons later on. We only allow the
|
|
custom Host: header if this is NOT a redirect, as setting Host: in the
|
|
redirected request is being out on thin ice. Except if the host name
|
|
is the same as the first one! */
|
|
char *cookiehost = Curl_copy_header_value(ptr);
|
|
if(!cookiehost)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
if(!*cookiehost)
|
|
/* ignore empty data */
|
|
free(cookiehost);
|
|
else {
|
|
/* If the host begins with '[', we start searching for the port after
|
|
the bracket has been closed */
|
|
int startsearch = 0;
|
|
if(*cookiehost == '[') {
|
|
char *closingbracket;
|
|
/* since the 'cookiehost' is an allocated memory area that will be
|
|
freed later we cannot simply increment the pointer */
|
|
memmove(cookiehost, cookiehost + 1, strlen(cookiehost) - 1);
|
|
closingbracket = strchr(cookiehost, ']');
|
|
if(closingbracket)
|
|
*closingbracket = 0;
|
|
}
|
|
else {
|
|
char *colon = strchr(cookiehost + startsearch, ':');
|
|
if(colon)
|
|
*colon = 0; /* The host must not include an embedded port number */
|
|
}
|
|
Curl_safefree(conn->allocptr.cookiehost);
|
|
conn->allocptr.cookiehost = cookiehost;
|
|
}
|
|
#endif
|
|
|
|
conn->allocptr.host = NULL;
|
|
}
|
|
else {
|
|
/* When building Host: headers, we must put the host name within
|
|
[brackets] if the host name is a plain IPv6-address. RFC2732-style. */
|
|
|
|
if(((conn->given->protocol&CURLPROTO_HTTPS) &&
|
|
(conn->remote_port == PORT_HTTPS)) ||
|
|
((conn->given->protocol&CURLPROTO_HTTP) &&
|
|
(conn->remote_port == PORT_HTTP)) )
|
|
/* if(HTTPS on port 443) OR (HTTP on port 80) then don't include
|
|
the port number in the host string */
|
|
conn->allocptr.host = aprintf("Host: %s%s%s\r\n",
|
|
conn->bits.ipv6_ip?"[":"",
|
|
host,
|
|
conn->bits.ipv6_ip?"]":"");
|
|
else
|
|
conn->allocptr.host = aprintf("Host: %s%s%s:%hu\r\n",
|
|
conn->bits.ipv6_ip?"[":"",
|
|
host,
|
|
conn->bits.ipv6_ip?"]":"",
|
|
conn->remote_port);
|
|
|
|
if(!conn->allocptr.host)
|
|
/* without Host: we can't make a nice request */
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
#ifndef CURL_DISABLE_PROXY
|
|
if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
|
|
/* Using a proxy but does not tunnel through it */
|
|
|
|
/* The path sent to the proxy is in fact the entire URL. But if the remote
|
|
host is a IDN-name, we must make sure that the request we produce only
|
|
uses the encoded host name! */
|
|
if(conn->host.dispname != conn->host.name) {
|
|
char *url = data->change.url;
|
|
ptr = strstr(url, conn->host.dispname);
|
|
if(ptr) {
|
|
/* This is where the display name starts in the URL, now replace this
|
|
part with the encoded name. TODO: This method of replacing the host
|
|
name is rather crude as I believe there's a slight risk that the
|
|
user has entered a user name or password that contain the host name
|
|
string. */
|
|
size_t currlen = strlen(conn->host.dispname);
|
|
size_t newlen = strlen(conn->host.name);
|
|
size_t urllen = strlen(url);
|
|
|
|
char *newurl;
|
|
|
|
newurl = malloc(urllen + newlen - currlen + 1);
|
|
if(newurl) {
|
|
/* copy the part before the host name */
|
|
memcpy(newurl, url, ptr - url);
|
|
/* append the new host name instead of the old */
|
|
memcpy(newurl + (ptr - url), conn->host.name, newlen);
|
|
/* append the piece after the host name */
|
|
memcpy(newurl + newlen + (ptr - url),
|
|
ptr + currlen, /* copy the trailing zero byte too */
|
|
urllen - (ptr-url) - currlen + 1);
|
|
if(data->change.url_alloc) {
|
|
Curl_safefree(data->change.url);
|
|
data->change.url_alloc = FALSE;
|
|
}
|
|
data->change.url = newurl;
|
|
data->change.url_alloc = TRUE;
|
|
}
|
|
else
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
ppath = data->change.url;
|
|
if(checkprefix("ftp://", ppath)) {
|
|
if(data->set.proxy_transfer_mode) {
|
|
/* when doing ftp, append ;type=<a|i> if not present */
|
|
char *type = strstr(ppath, ";type=");
|
|
if(type && type[6] && type[7] == 0) {
|
|
switch (Curl_raw_toupper(type[6])) {
|
|
case 'A':
|
|
case 'D':
|
|
case 'I':
|
|
break;
|
|
default:
|
|
type = NULL;
|
|
}
|
|
}
|
|
if(!type) {
|
|
char *p = ftp_typecode;
|
|
/* avoid sending invalid URLs like ftp://example.com;type=i if the
|
|
* user specified ftp://example.com without the slash */
|
|
if(!*data->state.path && ppath[strlen(ppath) - 1] != '/') {
|
|
*p++ = '/';
|
|
}
|
|
snprintf(p, sizeof(ftp_typecode) - 1, ";type=%c",
|
|
data->set.prefer_ascii ? 'a' : 'i');
|
|
}
|
|
}
|
|
if(conn->bits.user_passwd && !conn->bits.userpwd_in_url)
|
|
paste_ftp_userpwd = TRUE;
|
|
}
|
|
}
|
|
#endif /* CURL_DISABLE_PROXY */
|
|
|
|
if(HTTPREQ_POST_FORM == httpreq) {
|
|
/* we must build the whole post sequence first, so that we have a size of
|
|
the whole transfer before we start to send it */
|
|
result = Curl_getformdata(data, &http->sendit, data->set.httppost,
|
|
Curl_checkheaders(data, "Content-Type:"),
|
|
&http->postsize);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
http->p_accept = Curl_checkheaders(data, "Accept:")?NULL:"Accept: */*\r\n";
|
|
|
|
if(( (HTTPREQ_POST == httpreq) ||
|
|
(HTTPREQ_POST_FORM == httpreq) ||
|
|
(HTTPREQ_PUT == httpreq) ) &&
|
|
data->state.resume_from) {
|
|
/**********************************************************************
|
|
* Resuming upload in HTTP means that we PUT or POST and that we have
|
|
* got a resume_from value set. The resume value has already created
|
|
* a Range: header that will be passed along. We need to "fast forward"
|
|
* the file the given number of bytes and decrease the assume upload
|
|
* file size before we continue this venture in the dark lands of HTTP.
|
|
*********************************************************************/
|
|
|
|
if(data->state.resume_from < 0 ) {
|
|
/*
|
|
* This is meant to get the size of the present remote-file by itself.
|
|
* We don't support this now. Bail out!
|
|
*/
|
|
data->state.resume_from = 0;
|
|
}
|
|
|
|
if(data->state.resume_from && !data->state.this_is_a_follow) {
|
|
/* do we still game? */
|
|
|
|
/* Now, let's read off the proper amount of bytes from the
|
|
input. */
|
|
if(conn->seek_func) {
|
|
seekerr = conn->seek_func(conn->seek_client, data->state.resume_from,
|
|
SEEK_SET);
|
|
}
|
|
|
|
if(seekerr != CURL_SEEKFUNC_OK) {
|
|
if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
|
|
failf(data, "Could not seek stream");
|
|
return CURLE_READ_ERROR;
|
|
}
|
|
/* when seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
|
|
else {
|
|
curl_off_t passed=0;
|
|
do {
|
|
size_t readthisamountnow =
|
|
(data->state.resume_from - passed > CURL_OFF_T_C(BUFSIZE)) ?
|
|
BUFSIZE : curlx_sotouz(data->state.resume_from - passed);
|
|
|
|
size_t actuallyread =
|
|
data->set.fread_func(data->state.buffer, 1, readthisamountnow,
|
|
data->set.in);
|
|
|
|
passed += actuallyread;
|
|
if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
|
|
/* this checks for greater-than only to make sure that the
|
|
CURL_READFUNC_ABORT return code still aborts */
|
|
failf(data, "Could only read %" CURL_FORMAT_CURL_OFF_T
|
|
" bytes from the input", passed);
|
|
return CURLE_READ_ERROR;
|
|
}
|
|
} while(passed < data->state.resume_from);
|
|
}
|
|
}
|
|
|
|
/* now, decrease the size of the read */
|
|
if(data->set.infilesize>0) {
|
|
data->set.infilesize -= data->state.resume_from;
|
|
|
|
if(data->set.infilesize <= 0) {
|
|
failf(data, "File already completely uploaded");
|
|
return CURLE_PARTIAL_FILE;
|
|
}
|
|
}
|
|
/* we've passed, proceed as normal */
|
|
}
|
|
}
|
|
if(data->state.use_range) {
|
|
/*
|
|
* A range is selected. We use different headers whether we're downloading
|
|
* or uploading and we always let customized headers override our internal
|
|
* ones if any such are specified.
|
|
*/
|
|
if(((httpreq == HTTPREQ_GET) || (httpreq == HTTPREQ_HEAD)) &&
|
|
!Curl_checkheaders(data, "Range:")) {
|
|
/* if a line like this was already allocated, free the previous one */
|
|
if(conn->allocptr.rangeline)
|
|
free(conn->allocptr.rangeline);
|
|
conn->allocptr.rangeline = aprintf("Range: bytes=%s\r\n",
|
|
data->state.range);
|
|
}
|
|
else if((httpreq != HTTPREQ_GET) &&
|
|
!Curl_checkheaders(data, "Content-Range:")) {
|
|
|
|
/* if a line like this was already allocated, free the previous one */
|
|
if(conn->allocptr.rangeline)
|
|
free(conn->allocptr.rangeline);
|
|
|
|
if(data->set.set_resume_from < 0) {
|
|
/* Upload resume was asked for, but we don't know the size of the
|
|
remote part so we tell the server (and act accordingly) that we
|
|
upload the whole file (again) */
|
|
conn->allocptr.rangeline =
|
|
aprintf("Content-Range: bytes 0-%" CURL_FORMAT_CURL_OFF_T
|
|
"/%" CURL_FORMAT_CURL_OFF_T "\r\n",
|
|
data->set.infilesize - 1, data->set.infilesize);
|
|
|
|
}
|
|
else if(data->state.resume_from) {
|
|
/* This is because "resume" was selected */
|
|
curl_off_t total_expected_size=
|
|
data->state.resume_from + data->set.infilesize;
|
|
conn->allocptr.rangeline =
|
|
aprintf("Content-Range: bytes %s%" CURL_FORMAT_CURL_OFF_T
|
|
"/%" CURL_FORMAT_CURL_OFF_T "\r\n",
|
|
data->state.range, total_expected_size-1,
|
|
total_expected_size);
|
|
}
|
|
else {
|
|
/* Range was selected and then we just pass the incoming range and
|
|
append total size */
|
|
conn->allocptr.rangeline =
|
|
aprintf("Content-Range: bytes %s/%" CURL_FORMAT_CURL_OFF_T "\r\n",
|
|
data->state.range, data->set.infilesize);
|
|
}
|
|
if(!conn->allocptr.rangeline)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
/* Use 1.1 unless the user specifically asked for 1.0 or the server only
|
|
supports 1.0 */
|
|
httpstring= use_http_1_1plus(data, conn)?"1.1":"1.0";
|
|
|
|
/* initialize a dynamic send-buffer */
|
|
req_buffer = Curl_add_buffer_init();
|
|
|
|
if(!req_buffer)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* add the main request stuff */
|
|
/* GET/HEAD/POST/PUT */
|
|
result = Curl_add_bufferf(req_buffer, "%s ", request);
|
|
if(result)
|
|
return result;
|
|
|
|
/* url */
|
|
if(paste_ftp_userpwd)
|
|
result = Curl_add_bufferf(req_buffer, "ftp://%s:%s@%s",
|
|
conn->user, conn->passwd,
|
|
ppath + sizeof("ftp://") - 1);
|
|
else
|
|
result = Curl_add_buffer(req_buffer, ppath, strlen(ppath));
|
|
if(result)
|
|
return result;
|
|
|
|
result =
|
|
Curl_add_bufferf(req_buffer,
|
|
"%s" /* ftp typecode (;type=x) */
|
|
" HTTP/%s\r\n" /* HTTP version */
|
|
"%s" /* proxyuserpwd */
|
|
"%s" /* userpwd */
|
|
"%s" /* range */
|
|
"%s" /* user agent */
|
|
"%s" /* host */
|
|
"%s" /* accept */
|
|
"%s" /* TE: */
|
|
"%s" /* accept-encoding */
|
|
"%s" /* referer */
|
|
"%s" /* Proxy-Connection */
|
|
"%s",/* transfer-encoding */
|
|
|
|
ftp_typecode,
|
|
httpstring,
|
|
conn->allocptr.proxyuserpwd?
|
|
conn->allocptr.proxyuserpwd:"",
|
|
conn->allocptr.userpwd?conn->allocptr.userpwd:"",
|
|
(data->state.use_range && conn->allocptr.rangeline)?
|
|
conn->allocptr.rangeline:"",
|
|
(data->set.str[STRING_USERAGENT] &&
|
|
*data->set.str[STRING_USERAGENT] &&
|
|
conn->allocptr.uagent)?
|
|
conn->allocptr.uagent:"",
|
|
(conn->allocptr.host?conn->allocptr.host:""),
|
|
http->p_accept?http->p_accept:"",
|
|
conn->allocptr.te?conn->allocptr.te:"",
|
|
(data->set.str[STRING_ENCODING] &&
|
|
*data->set.str[STRING_ENCODING] &&
|
|
conn->allocptr.accept_encoding)?
|
|
conn->allocptr.accept_encoding:"",
|
|
(data->change.referer && conn->allocptr.ref)?
|
|
conn->allocptr.ref:"" /* Referer: <data> */,
|
|
(conn->bits.httpproxy &&
|
|
!conn->bits.tunnel_proxy &&
|
|
!Curl_checkheaders(data, "Proxy-Connection:"))?
|
|
"Proxy-Connection: Keep-Alive\r\n":"",
|
|
te
|
|
);
|
|
|
|
/*
|
|
* Free userpwd now --- cannot reuse this for Negotiate and possibly NTLM
|
|
* with basic and digest, it will be freed anyway by the next request
|
|
*/
|
|
|
|
Curl_safefree (conn->allocptr.userpwd);
|
|
conn->allocptr.userpwd = NULL;
|
|
|
|
if(result)
|
|
return result;
|
|
|
|
if(!(conn->handler->flags&PROTOPT_SSL) &&
|
|
(data->set.httpversion == CURL_HTTP_VERSION_2_0)) {
|
|
/* append HTTP2 updrade magic stuff to the HTTP request if it isn't done
|
|
over SSL */
|
|
result = Curl_http2_request(req_buffer, conn);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
#if !defined(CURL_DISABLE_COOKIES)
|
|
if(data->cookies || addcookies) {
|
|
struct Cookie *co=NULL; /* no cookies from start */
|
|
int count=0;
|
|
|
|
if(data->cookies) {
|
|
Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
|
|
co = Curl_cookie_getlist(data->cookies,
|
|
conn->allocptr.cookiehost?
|
|
conn->allocptr.cookiehost:host,
|
|
data->state.path,
|
|
(conn->handler->protocol&CURLPROTO_HTTPS)?
|
|
TRUE:FALSE);
|
|
Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
|
|
}
|
|
if(co) {
|
|
struct Cookie *store=co;
|
|
/* now loop through all cookies that matched */
|
|
while(co) {
|
|
if(co->value) {
|
|
if(0 == count) {
|
|
result = Curl_add_bufferf(req_buffer, "Cookie: ");
|
|
if(result)
|
|
break;
|
|
}
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"%s%s=%s", count?"; ":"",
|
|
co->name, co->value);
|
|
if(result)
|
|
break;
|
|
count++;
|
|
}
|
|
co = co->next; /* next cookie please */
|
|
}
|
|
Curl_cookie_freelist(store, FALSE); /* free the cookie list */
|
|
}
|
|
if(addcookies && (CURLE_OK == result)) {
|
|
if(!count)
|
|
result = Curl_add_bufferf(req_buffer, "Cookie: ");
|
|
if(CURLE_OK == result) {
|
|
result = Curl_add_bufferf(req_buffer, "%s%s",
|
|
count?"; ":"",
|
|
addcookies);
|
|
count++;
|
|
}
|
|
}
|
|
if(count && (CURLE_OK == result))
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
|
|
|
if(result)
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
if(data->set.timecondition) {
|
|
result = Curl_add_timecondition(data, req_buffer);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
result = Curl_add_custom_headers(conn, req_buffer);
|
|
if(result)
|
|
return result;
|
|
|
|
http->postdata = NULL; /* nothing to post at this point */
|
|
Curl_pgrsSetUploadSize(data, 0); /* upload size is 0 atm */
|
|
|
|
/* If 'authdone' is FALSE, we must not set the write socket index to the
|
|
Curl_transfer() call below, as we're not ready to actually upload any
|
|
data yet. */
|
|
|
|
switch(httpreq) {
|
|
|
|
case HTTPREQ_POST_FORM:
|
|
if(!http->sendit || conn->bits.authneg) {
|
|
/* nothing to post! */
|
|
result = Curl_add_bufferf(req_buffer, "Content-Length: 0\r\n\r\n");
|
|
if(result)
|
|
return result;
|
|
|
|
result = Curl_add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size, 0, FIRSTSOCKET);
|
|
if(result)
|
|
failf(data, "Failed sending POST request");
|
|
else
|
|
/* setup variables for the upcoming transfer */
|
|
Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount,
|
|
-1, NULL);
|
|
break;
|
|
}
|
|
|
|
if(Curl_FormInit(&http->form, http->sendit)) {
|
|
failf(data, "Internal HTTP POST error!");
|
|
return CURLE_HTTP_POST_ERROR;
|
|
}
|
|
|
|
/* Get the currently set callback function pointer and store that in the
|
|
form struct since we might want the actual user-provided callback later
|
|
on. The conn->fread_func pointer itself will be changed for the
|
|
multipart case to the function that returns a multipart formatted
|
|
stream. */
|
|
http->form.fread_func = conn->fread_func;
|
|
|
|
/* Set the read function to read from the generated form data */
|
|
conn->fread_func = (curl_read_callback)Curl_FormReader;
|
|
conn->fread_in = &http->form;
|
|
|
|
http->sending = HTTPSEND_BODY;
|
|
|
|
if(!data->req.upload_chunky &&
|
|
!Curl_checkheaders(data, "Content-Length:")) {
|
|
/* only add Content-Length if not uploading chunked */
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"Content-Length: %" CURL_FORMAT_CURL_OFF_T
|
|
"\r\n", http->postsize);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
result = expect100(data, conn, req_buffer);
|
|
if(result)
|
|
return result;
|
|
|
|
{
|
|
|
|
/* Get Content-Type: line from Curl_formpostheader.
|
|
*/
|
|
char *contentType;
|
|
size_t linelength=0;
|
|
contentType = Curl_formpostheader((void *)&http->form,
|
|
&linelength);
|
|
if(!contentType) {
|
|
failf(data, "Could not get Content-Type header line!");
|
|
return CURLE_HTTP_POST_ERROR;
|
|
}
|
|
|
|
result = Curl_add_buffer(req_buffer, contentType, linelength);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
/* make the request end in a true CRLF */
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
|
if(result)
|
|
return result;
|
|
|
|
/* set upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, http->postsize);
|
|
|
|
/* fire away the whole request to the server */
|
|
result = Curl_add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size, 0, FIRSTSOCKET);
|
|
if(result)
|
|
failf(data, "Failed sending POST request");
|
|
else
|
|
/* setup variables for the upcoming transfer */
|
|
Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
|
|
&http->readbytecount, FIRSTSOCKET,
|
|
&http->writebytecount);
|
|
|
|
if(result) {
|
|
Curl_formclean(&http->sendit); /* free that whole lot */
|
|
return result;
|
|
}
|
|
|
|
/* convert the form data */
|
|
result = Curl_convert_form(data, http->sendit);
|
|
if(result) {
|
|
Curl_formclean(&http->sendit); /* free that whole lot */
|
|
return result;
|
|
}
|
|
|
|
break;
|
|
|
|
case HTTPREQ_PUT: /* Let's PUT the data to the server! */
|
|
|
|
if(conn->bits.authneg)
|
|
postsize = 0;
|
|
else
|
|
postsize = data->set.infilesize;
|
|
|
|
if((postsize != -1) && !data->req.upload_chunky &&
|
|
!Curl_checkheaders(data, "Content-Length:")) {
|
|
/* only add Content-Length if not uploading chunked */
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"Content-Length: %" CURL_FORMAT_CURL_OFF_T
|
|
"\r\n", postsize);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
result = expect100(data, conn, req_buffer);
|
|
if(result)
|
|
return result;
|
|
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers */
|
|
if(result)
|
|
return result;
|
|
|
|
/* set the upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, postsize);
|
|
|
|
/* this sends the buffer and frees all the buffer resources */
|
|
result = Curl_add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size, 0, FIRSTSOCKET);
|
|
if(result)
|
|
failf(data, "Failed sending PUT request");
|
|
else
|
|
/* prepare for transfer */
|
|
Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
|
|
&http->readbytecount, postsize?FIRSTSOCKET:-1,
|
|
postsize?&http->writebytecount:NULL);
|
|
if(result)
|
|
return result;
|
|
break;
|
|
|
|
case HTTPREQ_POST:
|
|
/* this is the simple POST, using x-www-form-urlencoded style */
|
|
|
|
if(conn->bits.authneg)
|
|
postsize = 0;
|
|
else {
|
|
/* figure out the size of the postfields */
|
|
postsize = (data->set.postfieldsize != -1)?
|
|
data->set.postfieldsize:
|
|
(data->set.postfields? (curl_off_t)strlen(data->set.postfields):-1);
|
|
}
|
|
if(!data->req.upload_chunky) {
|
|
/* We only set Content-Length and allow a custom Content-Length if
|
|
we don't upload data chunked, as RFC2616 forbids us to set both
|
|
kinds of headers (Transfer-Encoding: chunked and Content-Length) */
|
|
|
|
if(conn->bits.authneg || !Curl_checkheaders(data, "Content-Length:")) {
|
|
/* we allow replacing this header if not during auth negotiation,
|
|
although it isn't very wise to actually set your own */
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"Content-Length: %" CURL_FORMAT_CURL_OFF_T
|
|
"\r\n", postsize);
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
|
|
if(!Curl_checkheaders(data, "Content-Type:")) {
|
|
result = Curl_add_bufferf(req_buffer,
|
|
"Content-Type: application/"
|
|
"x-www-form-urlencoded\r\n");
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
/* For really small posts we don't use Expect: headers at all, and for
|
|
the somewhat bigger ones we allow the app to disable it. Just make
|
|
sure that the expect100header is always set to the preferred value
|
|
here. */
|
|
ptr = Curl_checkheaders(data, "Expect:");
|
|
if(ptr) {
|
|
data->state.expect100header =
|
|
Curl_compareheader(ptr, "Expect:", "100-continue");
|
|
}
|
|
else if(postsize > TINY_INITIAL_POST_SIZE || postsize < 0) {
|
|
result = expect100(data, conn, req_buffer);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else
|
|
data->state.expect100header = FALSE;
|
|
|
|
if(data->set.postfields) {
|
|
|
|
if(!data->state.expect100header &&
|
|
(postsize < MAX_INITIAL_POST_SIZE)) {
|
|
/* if we don't use expect: 100 AND
|
|
postsize is less than MAX_INITIAL_POST_SIZE
|
|
|
|
then append the post data to the HTTP request header. This limit
|
|
is no magic limit but only set to prevent really huge POSTs to
|
|
get the data duplicated with malloc() and family. */
|
|
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
|
if(result)
|
|
return result;
|
|
|
|
if(!data->req.upload_chunky) {
|
|
/* We're not sending it 'chunked', append it to the request
|
|
already now to reduce the number if send() calls */
|
|
result = Curl_add_buffer(req_buffer, data->set.postfields,
|
|
(size_t)postsize);
|
|
included_body = postsize;
|
|
}
|
|
else {
|
|
if(postsize) {
|
|
/* Append the POST data chunky-style */
|
|
result = Curl_add_bufferf(req_buffer, "%x\r\n", (int)postsize);
|
|
if(CURLE_OK == result) {
|
|
result = Curl_add_buffer(req_buffer, data->set.postfields,
|
|
(size_t)postsize);
|
|
if(CURLE_OK == result)
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
|
included_body = postsize + 2;
|
|
}
|
|
}
|
|
if(CURLE_OK == result)
|
|
result = Curl_add_buffer(req_buffer,
|
|
"\x30\x0d\x0a\x0d\x0a", 5);
|
|
/* 0 CR LF CR LF */
|
|
included_body += 5;
|
|
}
|
|
if(result)
|
|
return result;
|
|
/* Make sure the progress information is accurate */
|
|
Curl_pgrsSetUploadSize(data, postsize);
|
|
}
|
|
else {
|
|
/* A huge POST coming up, do data separate from the request */
|
|
http->postsize = postsize;
|
|
http->postdata = data->set.postfields;
|
|
|
|
http->sending = HTTPSEND_BODY;
|
|
|
|
conn->fread_func = (curl_read_callback)readmoredata;
|
|
conn->fread_in = (void *)conn;
|
|
|
|
/* set the upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, http->postsize);
|
|
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
else {
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
|
if(result)
|
|
return result;
|
|
|
|
if(data->req.upload_chunky && conn->bits.authneg) {
|
|
/* Chunky upload is selected and we're negotiating auth still, send
|
|
end-of-data only */
|
|
result = Curl_add_buffer(req_buffer,
|
|
"\x30\x0d\x0a\x0d\x0a", 5);
|
|
/* 0 CR LF CR LF */
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
else if(data->set.postfieldsize) {
|
|
/* set the upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, postsize?postsize:-1);
|
|
|
|
/* set the pointer to mark that we will send the post body using the
|
|
read callback, but only if we're not in authenticate
|
|
negotiation */
|
|
if(!conn->bits.authneg) {
|
|
http->postdata = (char *)&http->postdata;
|
|
http->postsize = postsize;
|
|
}
|
|
}
|
|
}
|
|
/* issue the request */
|
|
result = Curl_add_buffer_send(req_buffer, conn, &data->info.request_size,
|
|
(size_t)included_body, FIRSTSOCKET);
|
|
|
|
if(result)
|
|
failf(data, "Failed sending HTTP POST request");
|
|
else
|
|
Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
|
|
&http->readbytecount, http->postdata?FIRSTSOCKET:-1,
|
|
http->postdata?&http->writebytecount:NULL);
|
|
break;
|
|
|
|
default:
|
|
result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
|
if(result)
|
|
return result;
|
|
|
|
/* issue the request */
|
|
result = Curl_add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size, 0, FIRSTSOCKET);
|
|
|
|
if(result)
|
|
failf(data, "Failed sending HTTP request");
|
|
else
|
|
/* HTTP GET/HEAD download: */
|
|
Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount,
|
|
http->postdata?FIRSTSOCKET:-1,
|
|
http->postdata?&http->writebytecount:NULL);
|
|
}
|
|
if(result)
|
|
return result;
|
|
|
|
if(http->writebytecount) {
|
|
/* if a request-body has been sent off, we make sure this progress is noted
|
|
properly */
|
|
Curl_pgrsSetUploadCounter(data, http->writebytecount);
|
|
if(Curl_pgrsUpdate(conn))
|
|
result = CURLE_ABORTED_BY_CALLBACK;
|
|
|
|
if(http->writebytecount >= postsize) {
|
|
/* already sent the entire request body, mark the "upload" as
|
|
complete */
|
|
infof(data, "upload completely sent off: %" CURL_FORMAT_CURL_OFF_T
|
|
" out of %" CURL_FORMAT_CURL_OFF_T " bytes\n",
|
|
http->writebytecount, postsize);
|
|
data->req.upload_done = TRUE;
|
|
data->req.keepon &= ~KEEP_SEND; /* we're done writing */
|
|
data->req.exp100 = EXP100_SEND_DATA; /* already sent */
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* checkhttpprefix()
|
|
*
|
|
* Returns TRUE if member of the list matches prefix of string
|
|
*/
|
|
static bool
|
|
checkhttpprefix(struct SessionHandle *data,
|
|
const char *s)
|
|
{
|
|
struct curl_slist *head = data->set.http200aliases;
|
|
bool rc = FALSE;
|
|
#ifdef CURL_DOES_CONVERSIONS
|
|
/* convert from the network encoding using a scratch area */
|
|
char *scratch = strdup(s);
|
|
if(NULL == scratch) {
|
|
failf (data, "Failed to allocate memory for conversion!");
|
|
return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
|
|
}
|
|
if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s)+1)) {
|
|
/* Curl_convert_from_network calls failf if unsuccessful */
|
|
free(scratch);
|
|
return FALSE; /* can't return CURLE_foobar so return FALSE */
|
|
}
|
|
s = scratch;
|
|
#endif /* CURL_DOES_CONVERSIONS */
|
|
|
|
while(head) {
|
|
if(checkprefix(head->data, s)) {
|
|
rc = TRUE;
|
|
break;
|
|
}
|
|
head = head->next;
|
|
}
|
|
|
|
if(!rc && (checkprefix("HTTP/", s)))
|
|
rc = TRUE;
|
|
|
|
#ifdef CURL_DOES_CONVERSIONS
|
|
free(scratch);
|
|
#endif /* CURL_DOES_CONVERSIONS */
|
|
return rc;
|
|
}
|
|
|
|
#ifndef CURL_DISABLE_RTSP
|
|
static bool
|
|
checkrtspprefix(struct SessionHandle *data,
|
|
const char *s)
|
|
{
|
|
|
|
#ifdef CURL_DOES_CONVERSIONS
|
|
/* convert from the network encoding using a scratch area */
|
|
char *scratch = strdup(s);
|
|
if(NULL == scratch) {
|
|
failf (data, "Failed to allocate memory for conversion!");
|
|
return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
|
|
}
|
|
if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s)+1)) {
|
|
/* Curl_convert_from_network calls failf if unsuccessful */
|
|
free(scratch);
|
|
return FALSE; /* can't return CURLE_foobar so return FALSE */
|
|
}
|
|
s = scratch;
|
|
#else
|
|
(void)data; /* unused */
|
|
#endif /* CURL_DOES_CONVERSIONS */
|
|
if(checkprefix("RTSP/", s))
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
#endif /* CURL_DISABLE_RTSP */
|
|
|
|
static bool
|
|
checkprotoprefix(struct SessionHandle *data, struct connectdata *conn,
|
|
const char *s)
|
|
{
|
|
#ifndef CURL_DISABLE_RTSP
|
|
if(conn->handler->protocol & CURLPROTO_RTSP)
|
|
return checkrtspprefix(data, s);
|
|
#else
|
|
(void)conn;
|
|
#endif /* CURL_DISABLE_RTSP */
|
|
|
|
return checkhttpprefix(data, s);
|
|
}
|
|
|
|
/*
|
|
* header_append() copies a chunk of data to the end of the already received
|
|
* header. We make sure that the full string fit in the allocated header
|
|
* buffer, or else we enlarge it.
|
|
*/
|
|
static CURLcode header_append(struct SessionHandle *data,
|
|
struct SingleRequest *k,
|
|
size_t length)
|
|
{
|
|
if(k->hbuflen + length >= data->state.headersize) {
|
|
/* We enlarge the header buffer as it is too small */
|
|
char *newbuff;
|
|
size_t hbufp_index;
|
|
size_t newsize;
|
|
|
|
if(k->hbuflen + length > CURL_MAX_HTTP_HEADER) {
|
|
/* The reason to have a max limit for this is to avoid the risk of a bad
|
|
server feeding libcurl with a never-ending header that will cause
|
|
reallocs infinitely */
|
|
failf (data, "Avoided giant realloc for header (max is %d)!",
|
|
CURL_MAX_HTTP_HEADER);
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
newsize=CURLMAX((k->hbuflen+ length)*3/2, data->state.headersize*2);
|
|
hbufp_index = k->hbufp - data->state.headerbuff;
|
|
newbuff = realloc(data->state.headerbuff, newsize);
|
|
if(!newbuff) {
|
|
failf (data, "Failed to alloc memory for big header!");
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
data->state.headersize=newsize;
|
|
data->state.headerbuff = newbuff;
|
|
k->hbufp = data->state.headerbuff + hbufp_index;
|
|
}
|
|
memcpy(k->hbufp, k->str_start, length);
|
|
k->hbufp += length;
|
|
k->hbuflen += length;
|
|
*k->hbufp = 0;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
static void print_http_error(struct SessionHandle *data)
|
|
{
|
|
struct SingleRequest *k = &data->req;
|
|
char *beg = k->p;
|
|
|
|
/* make sure that data->req.p points to the HTTP status line */
|
|
if(!strncmp(beg, "HTTP", 4)) {
|
|
|
|
/* skip to HTTP status code */
|
|
beg = strchr(beg, ' ');
|
|
if(beg && *++beg) {
|
|
|
|
/* find trailing CR */
|
|
char end_char = '\r';
|
|
char *end = strchr(beg, end_char);
|
|
if(!end) {
|
|
/* try to find LF (workaround for non-compliant HTTP servers) */
|
|
end_char = '\n';
|
|
end = strchr(beg, end_char);
|
|
}
|
|
|
|
if(end) {
|
|
/* temporarily replace CR or LF by NUL and print the error message */
|
|
*end = '\0';
|
|
failf(data, "The requested URL returned error: %s", beg);
|
|
|
|
/* restore the previously replaced CR or LF */
|
|
*end = end_char;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* fall-back to printing the HTTP status code only */
|
|
failf(data, "The requested URL returned error: %d", k->httpcode);
|
|
}
|
|
|
|
/*
|
|
* Read any HTTP header lines from the server and pass them to the client app.
|
|
*/
|
|
CURLcode Curl_http_readwrite_headers(struct SessionHandle *data,
|
|
struct connectdata *conn,
|
|
ssize_t *nread,
|
|
bool *stop_reading)
|
|
{
|
|
CURLcode result;
|
|
struct SingleRequest *k = &data->req;
|
|
|
|
/* header line within buffer loop */
|
|
do {
|
|
size_t rest_length;
|
|
size_t full_length;
|
|
int writetype;
|
|
|
|
/* str_start is start of line within buf */
|
|
k->str_start = k->str;
|
|
|
|
/* data is in network encoding so use 0x0a instead of '\n' */
|
|
k->end_ptr = memchr(k->str_start, 0x0a, *nread);
|
|
|
|
if(!k->end_ptr) {
|
|
/* Not a complete header line within buffer, append the data to
|
|
the end of the headerbuff. */
|
|
result = header_append(data, k, *nread);
|
|
if(result)
|
|
return result;
|
|
|
|
if(!k->headerline && (k->hbuflen>5)) {
|
|
/* make a first check that this looks like a protocol header */
|
|
if(!checkprotoprefix(data, conn, data->state.headerbuff)) {
|
|
/* this is not the beginning of a protocol first header line */
|
|
k->header = FALSE;
|
|
k->badheader = HEADER_ALLBAD;
|
|
break;
|
|
}
|
|
}
|
|
|
|
break; /* read more and try again */
|
|
}
|
|
|
|
/* decrease the size of the remaining (supposed) header line */
|
|
rest_length = (k->end_ptr - k->str)+1;
|
|
*nread -= (ssize_t)rest_length;
|
|
|
|
k->str = k->end_ptr + 1; /* move past new line */
|
|
|
|
full_length = k->str - k->str_start;
|
|
|
|
result = header_append(data, k, full_length);
|
|
if(result)
|
|
return result;
|
|
|
|
k->end_ptr = k->hbufp;
|
|
k->p = data->state.headerbuff;
|
|
|
|
/****
|
|
* We now have a FULL header line that p points to
|
|
*****/
|
|
|
|
if(!k->headerline) {
|
|
/* the first read header */
|
|
if((k->hbuflen>5) &&
|
|
!checkprotoprefix(data, conn, data->state.headerbuff)) {
|
|
/* this is not the beginning of a protocol first header line */
|
|
k->header = FALSE;
|
|
if(*nread)
|
|
/* since there's more, this is a partial bad header */
|
|
k->badheader = HEADER_PARTHEADER;
|
|
else {
|
|
/* this was all we read so it's all a bad header */
|
|
k->badheader = HEADER_ALLBAD;
|
|
*nread = (ssize_t)rest_length;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* headers are in network encoding so
|
|
use 0x0a and 0x0d instead of '\n' and '\r' */
|
|
if((0x0a == *k->p) || (0x0d == *k->p)) {
|
|
size_t headerlen;
|
|
/* Zero-length header line means end of headers! */
|
|
|
|
#ifdef CURL_DOES_CONVERSIONS
|
|
if(0x0d == *k->p) {
|
|
*k->p = '\r'; /* replace with CR in host encoding */
|
|
k->p++; /* pass the CR byte */
|
|
}
|
|
if(0x0a == *k->p) {
|
|
*k->p = '\n'; /* replace with LF in host encoding */
|
|
k->p++; /* pass the LF byte */
|
|
}
|
|
#else
|
|
if('\r' == *k->p)
|
|
k->p++; /* pass the \r byte */
|
|
if('\n' == *k->p)
|
|
k->p++; /* pass the \n byte */
|
|
#endif /* CURL_DOES_CONVERSIONS */
|
|
|
|
if(100 <= k->httpcode && 199 >= k->httpcode) {
|
|
/*
|
|
* We have made a HTTP PUT or POST and this is 1.1-lingo
|
|
* that tells us that the server is OK with this and ready
|
|
* to receive the data.
|
|
* However, we'll get more headers now so we must get
|
|
* back into the header-parsing state!
|
|
*/
|
|
k->header = TRUE;
|
|
k->headerline = 0; /* restart the header line counter */
|
|
|
|
/* if we did wait for this do enable write now! */
|
|
if(k->exp100) {
|
|
k->exp100 = EXP100_SEND_DATA;
|
|
k->keepon |= KEEP_SEND;
|
|
}
|
|
}
|
|
else {
|
|
k->header = FALSE; /* no more header to parse! */
|
|
|
|
if((k->size == -1) && !k->chunk && !conn->bits.close &&
|
|
(conn->httpversion >= 11) &&
|
|
!(conn->handler->protocol & CURLPROTO_RTSP) &&
|
|
data->set.httpreq != HTTPREQ_HEAD) {
|
|
/* On HTTP 1.1, when connection is not to get closed, but no
|
|
Content-Length nor Content-Encoding chunked have been
|
|
received, according to RFC2616 section 4.4 point 5, we
|
|
assume that the server will close the connection to
|
|
signal the end of the document. */
|
|
infof(data, "no chunk, no close, no size. Assume close to "
|
|
"signal end\n");
|
|
conn->bits.close = TRUE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* When all the headers have been parsed, see if we should give
|
|
* up and return an error.
|
|
*/
|
|
if(http_should_fail(conn)) {
|
|
failf (data, "The requested URL returned error: %d",
|
|
k->httpcode);
|
|
return CURLE_HTTP_RETURNED_ERROR;
|
|
}
|
|
|
|
/* now, only output this if the header AND body are requested:
|
|
*/
|
|
writetype = CLIENTWRITE_HEADER;
|
|
if(data->set.include_header)
|
|
writetype |= CLIENTWRITE_BODY;
|
|
|
|
headerlen = k->p - data->state.headerbuff;
|
|
|
|
result = Curl_client_write(conn, writetype,
|
|
data->state.headerbuff,
|
|
headerlen);
|
|
if(result)
|
|
return result;
|
|
|
|
data->info.header_size += (long)headerlen;
|
|
data->req.headerbytecount += (long)headerlen;
|
|
|
|
data->req.deductheadercount =
|
|
(100 <= k->httpcode && 199 >= k->httpcode)?data->req.headerbytecount:0;
|
|
|
|
if(!*stop_reading) {
|
|
/* Curl_http_auth_act() checks what authentication methods
|
|
* that are available and decides which one (if any) to
|
|
* use. It will set 'newurl' if an auth method was picked. */
|
|
result = Curl_http_auth_act(conn);
|
|
|
|
if(result)
|
|
return result;
|
|
|
|
if(k->httpcode >= 300) {
|
|
if((!conn->bits.authneg) && !conn->bits.close &&
|
|
!conn->bits.rewindaftersend) {
|
|
/*
|
|
* General treatment of errors when about to send data. Including :
|
|
* "417 Expectation Failed", while waiting for 100-continue.
|
|
*
|
|
* The check for close above is done simply because of something
|
|
* else has already deemed the connection to get closed then
|
|
* something else should've considered the big picture and we
|
|
* avoid this check.
|
|
*
|
|
* rewindaftersend indicates that something has told libcurl to
|
|
* continue sending even if it gets discarded
|
|
*/
|
|
|
|
switch(data->set.httpreq) {
|
|
case HTTPREQ_PUT:
|
|
case HTTPREQ_POST:
|
|
case HTTPREQ_POST_FORM:
|
|
/* We got an error response. If this happened before the whole
|
|
* request body has been sent we stop sending and mark the
|
|
* connection for closure after we've read the entire response.
|
|
*/
|
|
if(!k->upload_done) {
|
|
infof(data, "HTTP error before end of send, stop sending\n");
|
|
conn->bits.close = TRUE; /* close after this */
|
|
k->upload_done = TRUE;
|
|
k->keepon &= ~KEEP_SEND; /* don't send */
|
|
if(data->state.expect100header)
|
|
k->exp100 = EXP100_FAILED;
|
|
}
|
|
break;
|
|
|
|
default: /* default label present to avoid compiler warnings */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(conn->bits.rewindaftersend) {
|
|
/* We rewind after a complete send, so thus we continue
|
|
sending now */
|
|
infof(data, "Keep sending data to get tossed away!\n");
|
|
k->keepon |= KEEP_SEND;
|
|
}
|
|
}
|
|
|
|
if(!k->header) {
|
|
/*
|
|
* really end-of-headers.
|
|
*
|
|
* If we requested a "no body", this is a good time to get
|
|
* out and return home.
|
|
*/
|
|
if(data->set.opt_no_body)
|
|
*stop_reading = TRUE;
|
|
else {
|
|
/* If we know the expected size of this document, we set the
|
|
maximum download size to the size of the expected
|
|
document or else, we won't know when to stop reading!
|
|
|
|
Note that we set the download maximum even if we read a
|
|
"Connection: close" header, to make sure that
|
|
"Content-Length: 0" still prevents us from attempting to
|
|
read the (missing) response-body.
|
|
*/
|
|
/* According to RFC2616 section 4.4, we MUST ignore
|
|
Content-Length: headers if we are now receiving data
|
|
using chunked Transfer-Encoding.
|
|
*/
|
|
if(k->chunk)
|
|
k->maxdownload = k->size = -1;
|
|
}
|
|
if(-1 != k->size) {
|
|
/* We do this operation even if no_body is true, since this
|
|
data might be retrieved later with curl_easy_getinfo()
|
|
and its CURLINFO_CONTENT_LENGTH_DOWNLOAD option. */
|
|
|
|
Curl_pgrsSetDownloadSize(data, k->size);
|
|
k->maxdownload = k->size;
|
|
}
|
|
|
|
/* If max download size is *zero* (nothing) we already
|
|
have nothing and can safely return ok now! */
|
|
if(0 == k->maxdownload)
|
|
*stop_reading = TRUE;
|
|
|
|
if(*stop_reading) {
|
|
/* we make sure that this socket isn't read more now */
|
|
k->keepon &= ~KEEP_RECV;
|
|
}
|
|
|
|
if(data->set.verbose)
|
|
Curl_debug(data, CURLINFO_HEADER_IN,
|
|
k->str_start, headerlen, conn);
|
|
break; /* exit header line loop */
|
|
}
|
|
|
|
/* We continue reading headers, so reset the line-based
|
|
header parsing variables hbufp && hbuflen */
|
|
k->hbufp = data->state.headerbuff;
|
|
k->hbuflen = 0;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Checks for special headers coming up.
|
|
*/
|
|
|
|
if(!k->headerline++) {
|
|
/* This is the first header, it MUST be the error code line
|
|
or else we consider this to be the body right away! */
|
|
int httpversion_major;
|
|
int rtspversion_major;
|
|
int nc = 0;
|
|
#ifdef CURL_DOES_CONVERSIONS
|
|
#define HEADER1 scratch
|
|
#define SCRATCHSIZE 21
|
|
CURLcode res;
|
|
char scratch[SCRATCHSIZE+1]; /* "HTTP/major.minor 123" */
|
|
/* We can't really convert this yet because we
|
|
don't know if it's the 1st header line or the body.
|
|
So we do a partial conversion into a scratch area,
|
|
leaving the data at k->p as-is.
|
|
*/
|
|
strncpy(&scratch[0], k->p, SCRATCHSIZE);
|
|
scratch[SCRATCHSIZE] = 0; /* null terminate */
|
|
res = Curl_convert_from_network(data,
|
|
&scratch[0],
|
|
SCRATCHSIZE);
|
|
if(res)
|
|
/* Curl_convert_from_network calls failf if unsuccessful */
|
|
return res;
|
|
#else
|
|
#define HEADER1 k->p /* no conversion needed, just use k->p */
|
|
#endif /* CURL_DOES_CONVERSIONS */
|
|
|
|
if(conn->handler->protocol & CURLPROTO_HTTP) {
|
|
nc = sscanf(HEADER1,
|
|
" HTTP/%d.%d %3d",
|
|
&httpversion_major,
|
|
&conn->httpversion,
|
|
&k->httpcode);
|
|
if(nc==3) {
|
|
conn->httpversion += 10 * httpversion_major;
|
|
}
|
|
else {
|
|
/* this is the real world, not a Nirvana
|
|
NCSA 1.5.x returns this crap when asked for HTTP/1.1
|
|
*/
|
|
nc=sscanf(HEADER1, " HTTP %3d", &k->httpcode);
|
|
conn->httpversion = 10;
|
|
|
|
/* If user has set option HTTP200ALIASES,
|
|
compare header line against list of aliases
|
|
*/
|
|
if(!nc) {
|
|
if(checkhttpprefix(data, k->p)) {
|
|
nc = 1;
|
|
k->httpcode = 200;
|
|
conn->httpversion = 10;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if(conn->handler->protocol & CURLPROTO_RTSP) {
|
|
nc = sscanf(HEADER1,
|
|
" RTSP/%d.%d %3d",
|
|
&rtspversion_major,
|
|
&conn->rtspversion,
|
|
&k->httpcode);
|
|
if(nc==3) {
|
|
conn->rtspversion += 10 * rtspversion_major;
|
|
conn->httpversion = 11; /* For us, RTSP acts like HTTP 1.1 */
|
|
}
|
|
else {
|
|
/* TODO: do we care about the other cases here? */
|
|
nc = 0;
|
|
}
|
|
}
|
|
|
|
if(nc) {
|
|
data->info.httpcode = k->httpcode;
|
|
|
|
data->info.httpversion = conn->httpversion;
|
|
if(!data->state.httpversion ||
|
|
data->state.httpversion > conn->httpversion)
|
|
/* store the lowest server version we encounter */
|
|
data->state.httpversion = conn->httpversion;
|
|
|
|
/*
|
|
* This code executes as part of processing the header. As a
|
|
* result, it's not totally clear how to interpret the
|
|
* response code yet as that depends on what other headers may
|
|
* be present. 401 and 407 may be errors, but may be OK
|
|
* depending on how authentication is working. Other codes
|
|
* are definitely errors, so give up here.
|
|
*/
|
|
if(data->set.http_fail_on_error && (k->httpcode >= 400) &&
|
|
((k->httpcode != 401) || !conn->bits.user_passwd) &&
|
|
((k->httpcode != 407) || !conn->bits.proxy_user_passwd) ) {
|
|
|
|
if(data->state.resume_from &&
|
|
(data->set.httpreq==HTTPREQ_GET) &&
|
|
(k->httpcode == 416)) {
|
|
/* "Requested Range Not Satisfiable", just proceed and
|
|
pretend this is no error */
|
|
}
|
|
else {
|
|
/* serious error, go home! */
|
|
print_http_error(data);
|
|
return CURLE_HTTP_RETURNED_ERROR;
|
|
}
|
|
}
|
|
|
|
if(conn->httpversion == 10) {
|
|
/* Default action for HTTP/1.0 must be to close, unless
|
|
we get one of those fancy headers that tell us the
|
|
server keeps it open for us! */
|
|
infof(data, "HTTP 1.0, assume close after body\n");
|
|
conn->bits.close = TRUE;
|
|
}
|
|
else if(conn->httpversion >= 11 &&
|
|
!conn->bits.close) {
|
|
struct connectbundle *cb_ptr;
|
|
|
|
/* If HTTP version is >= 1.1 and connection is persistent
|
|
server supports pipelining. */
|
|
DEBUGF(infof(data,
|
|
"HTTP 1.1 or later with persistent connection, "
|
|
"pipelining supported\n"));
|
|
/* Activate pipelining if needed */
|
|
cb_ptr = conn->bundle;
|
|
if(cb_ptr) {
|
|
if(!Curl_pipeline_site_blacklisted(data, conn))
|
|
cb_ptr->server_supports_pipelining = TRUE;
|
|
}
|
|
}
|
|
|
|
switch(k->httpcode) {
|
|
case 204:
|
|
/* (quote from RFC2616, section 10.2.5): The server has
|
|
* fulfilled the request but does not need to return an
|
|
* entity-body ... The 204 response MUST NOT include a
|
|
* message-body, and thus is always terminated by the first
|
|
* empty line after the header fields. */
|
|
/* FALLTHROUGH */
|
|
case 304:
|
|
/* (quote from RFC2616, section 10.3.5): The 304 response
|
|
* MUST NOT contain a message-body, and thus is always
|
|
* terminated by the first empty line after the header
|
|
* fields. */
|
|
if(data->set.timecondition)
|
|
data->info.timecond = TRUE;
|
|
k->size=0;
|
|
k->maxdownload=0;
|
|
k->ignorecl = TRUE; /* ignore Content-Length headers */
|
|
break;
|
|
default:
|
|
/* nothing */
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
k->header = FALSE; /* this is not a header line */
|
|
break;
|
|
}
|
|
}
|
|
|
|
result = Curl_convert_from_network(data, k->p, strlen(k->p));
|
|
/* Curl_convert_from_network calls failf if unsuccessful */
|
|
if(result)
|
|
return result;
|
|
|
|
/* Check for Content-Length: header lines to get size */
|
|
if(!k->ignorecl && !data->set.ignorecl &&
|
|
checkprefix("Content-Length:", k->p)) {
|
|
curl_off_t contentlength = curlx_strtoofft(k->p+15, NULL, 10);
|
|
if(data->set.max_filesize &&
|
|
contentlength > data->set.max_filesize) {
|
|
failf(data, "Maximum file size exceeded");
|
|
return CURLE_FILESIZE_EXCEEDED;
|
|
}
|
|
if(contentlength >= 0) {
|
|
k->size = contentlength;
|
|
k->maxdownload = k->size;
|
|
/* we set the progress download size already at this point
|
|
just to make it easier for apps/callbacks to extract this
|
|
info as soon as possible */
|
|
Curl_pgrsSetDownloadSize(data, k->size);
|
|
}
|
|
else {
|
|
/* Negative Content-Length is really odd, and we know it
|
|
happens for example when older Apache servers send large
|
|
files */
|
|
conn->bits.close = TRUE;
|
|
infof(data, "Negative content-length: %" CURL_FORMAT_CURL_OFF_T
|
|
", closing after transfer\n", contentlength);
|
|
}
|
|
}
|
|
/* check for Content-Type: header lines to get the MIME-type */
|
|
else if(checkprefix("Content-Type:", k->p)) {
|
|
char *contenttype = Curl_copy_header_value(k->p);
|
|
if(!contenttype)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
if(!*contenttype)
|
|
/* ignore empty data */
|
|
free(contenttype);
|
|
else {
|
|
Curl_safefree(data->info.contenttype);
|
|
data->info.contenttype = contenttype;
|
|
}
|
|
}
|
|
else if(checkprefix("Server:", k->p)) {
|
|
char *server_name = Curl_copy_header_value(k->p);
|
|
|
|
/* Turn off pipelining if the server version is blacklisted */
|
|
if(conn->bundle && conn->bundle->server_supports_pipelining) {
|
|
if(Curl_pipeline_server_blacklisted(data, server_name))
|
|
conn->bundle->server_supports_pipelining = FALSE;
|
|
}
|
|
Curl_safefree(server_name);
|
|
}
|
|
else if((conn->httpversion == 10) &&
|
|
conn->bits.httpproxy &&
|
|
Curl_compareheader(k->p,
|
|
"Proxy-Connection:", "keep-alive")) {
|
|
/*
|
|
* When a HTTP/1.0 reply comes when using a proxy, the
|
|
* 'Proxy-Connection: keep-alive' line tells us the
|
|
* connection will be kept alive for our pleasure.
|
|
* Default action for 1.0 is to close.
|
|
*/
|
|
conn->bits.close = FALSE; /* don't close when done */
|
|
infof(data, "HTTP/1.0 proxy connection set to keep alive!\n");
|
|
}
|
|
else if((conn->httpversion == 11) &&
|
|
conn->bits.httpproxy &&
|
|
Curl_compareheader(k->p,
|
|
"Proxy-Connection:", "close")) {
|
|
/*
|
|
* We get a HTTP/1.1 response from a proxy and it says it'll
|
|
* close down after this transfer.
|
|
*/
|
|
conn->bits.close = TRUE; /* close when done */
|
|
infof(data, "HTTP/1.1 proxy connection set close!\n");
|
|
}
|
|
else if((conn->httpversion == 10) &&
|
|
Curl_compareheader(k->p, "Connection:", "keep-alive")) {
|
|
/*
|
|
* A HTTP/1.0 reply with the 'Connection: keep-alive' line
|
|
* tells us the connection will be kept alive for our
|
|
* pleasure. Default action for 1.0 is to close.
|
|
*
|
|
* [RFC2068, section 19.7.1] */
|
|
conn->bits.close = FALSE; /* don't close when done */
|
|
infof(data, "HTTP/1.0 connection set to keep alive!\n");
|
|
}
|
|
else if(Curl_compareheader(k->p, "Connection:", "close")) {
|
|
/*
|
|
* [RFC 2616, section 8.1.2.1]
|
|
* "Connection: close" is HTTP/1.1 language and means that
|
|
* the connection will close when this request has been
|
|
* served.
|
|
*/
|
|
conn->bits.close = TRUE; /* close when done */
|
|
}
|
|
else if(checkprefix("Transfer-Encoding:", k->p)) {
|
|
/* One or more encodings. We check for chunked and/or a compression
|
|
algorithm. */
|
|
/*
|
|
* [RFC 2616, section 3.6.1] A 'chunked' transfer encoding
|
|
* means that the server will send a series of "chunks". Each
|
|
* chunk starts with line with info (including size of the
|
|
* coming block) (terminated with CRLF), then a block of data
|
|
* with the previously mentioned size. There can be any amount
|
|
* of chunks, and a chunk-data set to zero signals the
|
|
* end-of-chunks. */
|
|
|
|
char *start;
|
|
|
|
/* Find the first non-space letter */
|
|
start = k->p + 18;
|
|
|
|
for(;;) {
|
|
/* skip whitespaces and commas */
|
|
while(*start && (ISSPACE(*start) || (*start == ',')))
|
|
start++;
|
|
|
|
if(checkprefix("chunked", start)) {
|
|
k->chunk = TRUE; /* chunks coming our way */
|
|
|
|
/* init our chunky engine */
|
|
Curl_httpchunk_init(conn);
|
|
|
|
start += 7;
|
|
}
|
|
|
|
if(k->auto_decoding)
|
|
/* TODO: we only support the first mentioned compression for now */
|
|
break;
|
|
|
|
if(checkprefix("identity", start)) {
|
|
k->auto_decoding = IDENTITY;
|
|
start += 8;
|
|
}
|
|
else if(checkprefix("deflate", start)) {
|
|
k->auto_decoding = DEFLATE;
|
|
start += 7;
|
|
}
|
|
else if(checkprefix("gzip", start)) {
|
|
k->auto_decoding = GZIP;
|
|
start += 4;
|
|
}
|
|
else if(checkprefix("x-gzip", start)) {
|
|
k->auto_decoding = GZIP;
|
|
start += 6;
|
|
}
|
|
else if(checkprefix("compress", start)) {
|
|
k->auto_decoding = COMPRESS;
|
|
start += 8;
|
|
}
|
|
else if(checkprefix("x-compress", start)) {
|
|
k->auto_decoding = COMPRESS;
|
|
start += 10;
|
|
}
|
|
else
|
|
/* unknown! */
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
else if(checkprefix("Content-Encoding:", k->p) &&
|
|
data->set.str[STRING_ENCODING]) {
|
|
/*
|
|
* Process Content-Encoding. Look for the values: identity,
|
|
* gzip, deflate, compress, x-gzip and x-compress. x-gzip and
|
|
* x-compress are the same as gzip and compress. (Sec 3.5 RFC
|
|
* 2616). zlib cannot handle compress. However, errors are
|
|
* handled further down when the response body is processed
|
|
*/
|
|
char *start;
|
|
|
|
/* Find the first non-space letter */
|
|
start = k->p + 17;
|
|
while(*start && ISSPACE(*start))
|
|
start++;
|
|
|
|
/* Record the content-encoding for later use */
|
|
if(checkprefix("identity", start))
|
|
k->auto_decoding = IDENTITY;
|
|
else if(checkprefix("deflate", start))
|
|
k->auto_decoding = DEFLATE;
|
|
else if(checkprefix("gzip", start)
|
|
|| checkprefix("x-gzip", start))
|
|
k->auto_decoding = GZIP;
|
|
else if(checkprefix("compress", start)
|
|
|| checkprefix("x-compress", start))
|
|
k->auto_decoding = COMPRESS;
|
|
}
|
|
else if(checkprefix("Content-Range:", k->p)) {
|
|
/* Content-Range: bytes [num]-
|
|
Content-Range: bytes: [num]-
|
|
Content-Range: [num]-
|
|
|
|
The second format was added since Sun's webserver
|
|
JavaWebServer/1.1.1 obviously sends the header this way!
|
|
The third added since some servers use that!
|
|
*/
|
|
|
|
char *ptr = k->p + 14;
|
|
|
|
/* Move forward until first digit */
|
|
while(*ptr && !ISDIGIT(*ptr))
|
|
ptr++;
|
|
|
|
k->offset = curlx_strtoofft(ptr, NULL, 10);
|
|
|
|
if(data->state.resume_from == k->offset)
|
|
/* we asked for a resume and we got it */
|
|
k->content_range = TRUE;
|
|
}
|
|
#if !defined(CURL_DISABLE_COOKIES)
|
|
else if(data->cookies &&
|
|
checkprefix("Set-Cookie:", k->p)) {
|
|
Curl_share_lock(data, CURL_LOCK_DATA_COOKIE,
|
|
CURL_LOCK_ACCESS_SINGLE);
|
|
Curl_cookie_add(data,
|
|
data->cookies, TRUE, k->p+11,
|
|
/* If there is a custom-set Host: name, use it
|
|
here, or else use real peer host name. */
|
|
conn->allocptr.cookiehost?
|
|
conn->allocptr.cookiehost:conn->host.name,
|
|
data->state.path);
|
|
Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
|
|
}
|
|
#endif
|
|
else if(checkprefix("Last-Modified:", k->p) &&
|
|
(data->set.timecondition || data->set.get_filetime) ) {
|
|
time_t secs=time(NULL);
|
|
k->timeofdoc = curl_getdate(k->p+strlen("Last-Modified:"),
|
|
&secs);
|
|
if(data->set.get_filetime)
|
|
data->info.filetime = (long)k->timeofdoc;
|
|
}
|
|
else if((checkprefix("WWW-Authenticate:", k->p) &&
|
|
(401 == k->httpcode)) ||
|
|
(checkprefix("Proxy-authenticate:", k->p) &&
|
|
(407 == k->httpcode))) {
|
|
|
|
bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
|
|
char *auth = Curl_copy_header_value(k->p);
|
|
if(!auth)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
result = Curl_http_input_auth(conn, proxy, auth);
|
|
|
|
Curl_safefree(auth);
|
|
|
|
if(result)
|
|
return result;
|
|
}
|
|
else if((k->httpcode >= 300 && k->httpcode < 400) &&
|
|
checkprefix("Location:", k->p) &&
|
|
!data->req.location) {
|
|
/* this is the URL that the server advises us to use instead */
|
|
char *location = Curl_copy_header_value(k->p);
|
|
if(!location)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
if(!*location)
|
|
/* ignore empty data */
|
|
free(location);
|
|
else {
|
|
data->req.location = location;
|
|
|
|
if(data->set.http_follow_location) {
|
|
DEBUGASSERT(!data->req.newurl);
|
|
data->req.newurl = strdup(data->req.location); /* clone */
|
|
if(!data->req.newurl)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* some cases of POST and PUT etc needs to rewind the data
|
|
stream at this point */
|
|
result = http_perhapsrewind(conn);
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
else if(conn->handler->protocol & CURLPROTO_RTSP) {
|
|
result = Curl_rtsp_parseheader(conn, k->p);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* End of header-checks. Write them to the client.
|
|
*/
|
|
|
|
writetype = CLIENTWRITE_HEADER;
|
|
if(data->set.include_header)
|
|
writetype |= CLIENTWRITE_BODY;
|
|
|
|
if(data->set.verbose)
|
|
Curl_debug(data, CURLINFO_HEADER_IN,
|
|
k->p, (size_t)k->hbuflen, conn);
|
|
|
|
result = Curl_client_write(conn, writetype, k->p, k->hbuflen);
|
|
if(result)
|
|
return result;
|
|
|
|
data->info.header_size += (long)k->hbuflen;
|
|
data->req.headerbytecount += (long)k->hbuflen;
|
|
|
|
/* reset hbufp pointer && hbuflen */
|
|
k->hbufp = data->state.headerbuff;
|
|
k->hbuflen = 0;
|
|
}
|
|
while(!*stop_reading && *k->str); /* header line within buffer */
|
|
|
|
/* We might have reached the end of the header part here, but
|
|
there might be a non-header part left in the end of the read
|
|
buffer. */
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
#endif /* CURL_DISABLE_HTTP */
|