diff options
Diffstat (limited to 'libcurl/src/lib/http_proxy.c')
| -rw-r--r-- | libcurl/src/lib/http_proxy.c | 590 |
1 files changed, 0 insertions, 590 deletions
diff --git a/libcurl/src/lib/http_proxy.c b/libcurl/src/lib/http_proxy.c deleted file mode 100644 index 4c45b9c..0000000 --- a/libcurl/src/lib/http_proxy.c +++ /dev/null @@ -1,590 +0,0 @@ -/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#if !defined(CURL_DISABLE_PROXY) && !defined(CURL_DISABLE_HTTP)
-
-#include "urldata.h"
-#include <curl/curl.h>
-#include "http_proxy.h"
-#include "sendf.h"
-#include "http.h"
-#include "url.h"
-#include "select.h"
-#include "rawstr.h"
-#include "progress.h"
-#include "non-ascii.h"
-#include "connect.h"
-#include "curl_printf.h"
-#include "curlx.h"
-
-#include "curl_memory.h"
-/* The last #include file should be: */
-#include "memdebug.h"
-
-CURL_STATIC CURLcode Curl_proxy_connect(struct connectdata *conn)
-{
- if(conn->bits.tunnel_proxy && conn->bits.httpproxy) {
-#ifndef CURL_DISABLE_PROXY
- /* for [protocol] tunneled through HTTP proxy */
- struct HTTP http_proxy;
- void *prot_save;
- CURLcode result;
-
- /* BLOCKING */
- /* We want "seamless" operations through HTTP proxy tunnel */
-
- /* Curl_proxyCONNECT is based on a pointer to a struct HTTP at the
- * member conn->proto.http; we want [protocol] through HTTP and we have
- * to change the member temporarily for connecting to the HTTP
- * proxy. After Curl_proxyCONNECT we have to set back the member to the
- * original pointer
- *
- * This function might be called several times in the multi interface case
- * if the proxy's CONNTECT response is not instant.
- */
- prot_save = conn->data->req.protop;
- memset(&http_proxy, 0, sizeof(http_proxy));
- conn->data->req.protop = &http_proxy;
- connkeep(conn, "HTTP proxy CONNECT");
- result = Curl_proxyCONNECT(conn, FIRSTSOCKET,
- conn->host.name, conn->remote_port);
- conn->data->req.protop = prot_save;
- if(CURLE_OK != result)
- return result;
- Curl_safefree(conn->allocptr.proxyuserpwd);
-#else
- return CURLE_NOT_BUILT_IN;
-#endif
- }
- /* no HTTP tunnel proxy, just return */
- return CURLE_OK;
-}
-
-/*
- * Curl_proxyCONNECT() requires that we're connected to a HTTP proxy. This
- * function will issue the necessary commands to get a seamless tunnel through
- * this proxy. After that, the socket can be used just as a normal socket.
- */
-
-CURL_STATIC CURLcode Curl_proxyCONNECT(struct connectdata *conn,
- int sockindex,
- const char *hostname,
- int remote_port)
-{
- int subversion=0;
- struct SessionHandle *data=conn->data;
- struct SingleRequest *k = &data->req;
- CURLcode result;
- curl_socket_t tunnelsocket = conn->sock[sockindex];
- curl_off_t cl=0;
- bool closeConnection = FALSE;
- bool chunked_encoding = FALSE;
- long check;
-
-#define SELECT_OK 0
-#define SELECT_ERROR 1
-#define SELECT_TIMEOUT 2
- int error = SELECT_OK;
-
- if(conn->tunnel_state[sockindex] == TUNNEL_COMPLETE)
- return CURLE_OK; /* CONNECT is already completed */
-
- conn->bits.proxy_connect_closed = FALSE;
-
- do {
- if(TUNNEL_INIT == conn->tunnel_state[sockindex]) {
- /* BEGIN CONNECT PHASE */
- char *host_port;
- Curl_send_buffer *req_buffer;
-
- infof(data, "Establish HTTP proxy tunnel to %s:%hu\n",
- hostname, remote_port);
-
- /* This only happens if we've looped here due to authentication
- reasons, and we don't really use the newly cloned URL here
- then. Just free() it. */
- free(data->req.newurl);
- data->req.newurl = NULL;
-
- /* initialize a dynamic send-buffer */
- req_buffer = Curl_add_buffer_init();
-
- if(!req_buffer)
- return CURLE_OUT_OF_MEMORY;
-
- host_port = aprintf("%s:%hu", hostname, remote_port);
- if(!host_port) {
- free(req_buffer);
- return CURLE_OUT_OF_MEMORY;
- }
-
- /* Setup the proxy-authorization header, if any */
- result = Curl_http_output_auth(conn, "CONNECT", host_port, TRUE);
-
- free(host_port);
-
- if(!result) {
- char *host=(char *)"";
- const char *proxyconn="";
- const char *useragent="";
- const char *http = (conn->proxytype == CURLPROXY_HTTP_1_0) ?
- "1.0" : "1.1";
- char *hostheader= /* host:port with IPv6 support */
- aprintf("%s%s%s:%hu", conn->bits.ipv6_ip?"[":"",
- hostname, conn->bits.ipv6_ip?"]":"",
- remote_port);
- if(!hostheader) {
- free(req_buffer);
- return CURLE_OUT_OF_MEMORY;
- }
-
- if(!Curl_checkProxyheaders(conn, "Host:")) {
- host = aprintf("Host: %s\r\n", hostheader);
- if(!host) {
- free(hostheader);
- free(req_buffer);
- return CURLE_OUT_OF_MEMORY;
- }
- }
- if(!Curl_checkProxyheaders(conn, "Proxy-Connection:"))
- proxyconn = "Proxy-Connection: Keep-Alive\r\n";
-
- if(!Curl_checkProxyheaders(conn, "User-Agent:") &&
- data->set.str[STRING_USERAGENT])
- useragent = conn->allocptr.uagent;
-
- result =
- Curl_add_bufferf(req_buffer,
- "CONNECT %s HTTP/%s\r\n"
- "%s" /* Host: */
- "%s" /* Proxy-Authorization */
- "%s" /* User-Agent */
- "%s", /* Proxy-Connection */
- hostheader,
- http,
- host,
- conn->allocptr.proxyuserpwd?
- conn->allocptr.proxyuserpwd:"",
- useragent,
- proxyconn);
-
- if(host && *host)
- free(host);
- free(hostheader);
-
- if(!result)
- result = Curl_add_custom_headers(conn, TRUE, req_buffer);
-
- if(!result)
- /* CRLF terminate the request */
- result = Curl_add_bufferf(req_buffer, "\r\n");
-
- if(!result) {
- /* Send the connect request to the proxy */
- /* BLOCKING */
- result =
- Curl_add_buffer_send(req_buffer, conn,
- &data->info.request_size, 0, sockindex);
- }
- req_buffer = NULL;
- if(result)
- failf(data, "Failed sending CONNECT to proxy");
- }
-
- free(req_buffer);
- if(result)
- return result;
-
- conn->tunnel_state[sockindex] = TUNNEL_CONNECT;
- } /* END CONNECT PHASE */
-
- check = Curl_timeleft(data, NULL, TRUE);
- if(check <= 0) {
- failf(data, "Proxy CONNECT aborted due to timeout");
- return CURLE_RECV_ERROR;
- }
-
- if(0 == Curl_socket_ready(tunnelsocket, CURL_SOCKET_BAD, 0))
- /* return so we'll be called again polling-style */
- return CURLE_OK;
- else {
- DEBUGF(infof(data,
- "Read response immediately from proxy CONNECT\n"));
- }
-
- /* at this point, the tunnel_connecting phase is over. */
-
- { /* READING RESPONSE PHASE */
- size_t nread; /* total size read */
- int perline; /* count bytes per line */
- int keepon=TRUE;
- ssize_t gotbytes;
- char *ptr;
- char *line_start;
-
- ptr=data->state.buffer;
- line_start = ptr;
-
- nread=0;
- perline=0;
-
- while((nread<BUFSIZE) && (keepon && !error)) {
-
- check = Curl_timeleft(data, NULL, TRUE);
- if(check <= 0) {
- failf(data, "Proxy CONNECT aborted due to timeout");
- error = SELECT_TIMEOUT; /* already too little time */
- break;
- }
-
- /* loop every second at least, less if the timeout is near */
- switch (Curl_socket_ready(tunnelsocket, CURL_SOCKET_BAD,
- check<1000L?check:1000)) {
- case -1: /* select() error, stop reading */
- error = SELECT_ERROR;
- failf(data, "Proxy CONNECT aborted due to select/poll error");
- break;
- case 0: /* timeout */
- break;
- default:
- DEBUGASSERT(ptr+BUFSIZE-nread <= data->state.buffer+BUFSIZE+1);
- result = Curl_read(conn, tunnelsocket, ptr, BUFSIZE-nread,
- &gotbytes);
- if(result==CURLE_AGAIN)
- continue; /* go loop yourself */
- else if(result)
- keepon = FALSE;
- else if(gotbytes <= 0) {
- keepon = FALSE;
- if(data->set.proxyauth && data->state.authproxy.avail) {
- /* proxy auth was requested and there was proxy auth available,
- then deem this as "mere" proxy disconnect */
- conn->bits.proxy_connect_closed = TRUE;
- infof(data, "Proxy CONNECT connection closed");
- }
- else {
- error = SELECT_ERROR;
- failf(data, "Proxy CONNECT aborted");
- }
- }
- else {
- /*
- * We got a whole chunk of data, which can be anything from one
- * byte to a set of lines and possibly just a piece of the last
- * line.
- */
- int i;
-
- nread += gotbytes;
-
- if(keepon > TRUE) {
- /* This means we are currently ignoring a response-body */
-
- nread = 0; /* make next read start over in the read buffer */
- ptr=data->state.buffer;
- if(cl) {
- /* A Content-Length based body: simply count down the counter
- and make sure to break out of the loop when we're done! */
- cl -= gotbytes;
- if(cl<=0) {
- keepon = FALSE;
- break;
- }
- }
- else {
- /* chunked-encoded body, so we need to do the chunked dance
- properly to know when the end of the body is reached */
- CHUNKcode r;
- ssize_t tookcareof=0;
-
- /* now parse the chunked piece of data so that we can
- properly tell when the stream ends */
- r = Curl_httpchunk_read(conn, ptr, gotbytes, &tookcareof);
- if(r == CHUNKE_STOP) {
- /* we're done reading chunks! */
- infof(data, "chunk reading DONE\n");
- keepon = FALSE;
- /* we did the full CONNECT treatment, go COMPLETE */
- conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
- }
- else
- infof(data, "Read %zd bytes of chunk, continue\n",
- tookcareof);
- }
- }
- else
- for(i = 0; i < gotbytes; ptr++, i++) {
- perline++; /* amount of bytes in this line so far */
- if(*ptr == 0x0a) {
- char letter;
- int writetype;
-
- /* convert from the network encoding */
- result = Curl_convert_from_network(data, line_start,
- perline);
- /* Curl_convert_from_network calls failf if unsuccessful */
- if(result)
- return result;
-
- /* output debug if that is requested */
- if(data->set.verbose)
- Curl_debug(data, CURLINFO_HEADER_IN,
- line_start, (size_t)perline, conn);
-
- /* send the header to the callback */
- writetype = CLIENTWRITE_HEADER;
- if(data->set.include_header)
- writetype |= CLIENTWRITE_BODY;
-
- result = Curl_client_write(conn, writetype, line_start,
- perline);
-
- data->info.header_size += (long)perline;
- data->req.headerbytecount += (long)perline;
-
- if(result)
- return result;
-
- /* Newlines are CRLF, so the CR is ignored as the line isn't
- really terminated until the LF comes. Treat a following CR
- as end-of-headers as well.*/
-
- if(('\r' == line_start[0]) ||
- ('\n' == line_start[0])) {
- /* end of response-headers from the proxy */
- nread = 0; /* make next read start over in the read
- buffer */
- ptr=data->state.buffer;
- if((407 == k->httpcode) && !data->state.authproblem) {
- /* If we get a 407 response code with content length
- when we have no auth problem, we must ignore the
- whole response-body */
- keepon = 2;
-
- if(cl) {
- infof(data, "Ignore %" CURL_FORMAT_CURL_OFF_T
- " bytes of response-body\n", cl);
-
- /* remove the remaining chunk of what we already
- read */
- cl -= (gotbytes - i);
-
- if(cl<=0)
- /* if the whole thing was already read, we are done!
- */
- keepon=FALSE;
- }
- else if(chunked_encoding) {
- CHUNKcode r;
- /* We set ignorebody true here since the chunked
- decoder function will acknowledge that. Pay
- attention so that this is cleared again when this
- function returns! */
- k->ignorebody = TRUE;
- infof(data, "%zd bytes of chunk left\n", gotbytes-i);
-
- if(line_start[1] == '\n') {
- /* this can only be a LF if the letter at index 0
- was a CR */
- line_start++;
- i++;
- }
-
- /* now parse the chunked piece of data so that we can
- properly tell when the stream ends */
- r = Curl_httpchunk_read(conn, line_start+1,
- gotbytes -i, &gotbytes);
- if(r == CHUNKE_STOP) {
- /* we're done reading chunks! */
- infof(data, "chunk reading DONE\n");
- keepon = FALSE;
- /* we did the full CONNECT treatment, go to
- COMPLETE */
- conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
- }
- else
- infof(data, "Read %zd bytes of chunk, continue\n",
- gotbytes);
- }
- else {
- /* without content-length or chunked encoding, we
- can't keep the connection alive since the close is
- the end signal so we bail out at once instead */
- keepon=FALSE;
- }
- }
- else {
- keepon = FALSE;
- if(200 == data->info.httpproxycode) {
- if(gotbytes - (i+1))
- failf(data, "Proxy CONNECT followed by %zd bytes "
- "of opaque data. Data ignored (known bug #39)",
- gotbytes - (i+1));
- }
- }
- /* we did the full CONNECT treatment, go to COMPLETE */
- conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
- break; /* breaks out of for-loop, not switch() */
- }
-
- /* keep a backup of the position we are about to blank */
- letter = line_start[perline];
- line_start[perline]=0; /* zero terminate the buffer */
- if((checkprefix("WWW-Authenticate:", line_start) &&
- (401 == k->httpcode)) ||
- (checkprefix("Proxy-authenticate:", line_start) &&
- (407 == k->httpcode))) {
-
- bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
- char *auth = Curl_copy_header_value(line_start);
- if(!auth)
- return CURLE_OUT_OF_MEMORY;
-
- result = Curl_http_input_auth(conn, proxy, auth);
-
- free(auth);
-
- if(result)
- return result;
- }
- else if(checkprefix("Content-Length:", line_start)) {
- cl = curlx_strtoofft(line_start +
- strlen("Content-Length:"), NULL, 10);
- }
- else if(Curl_compareheader(line_start,
- "Connection:", "close"))
- closeConnection = TRUE;
- else if(Curl_compareheader(line_start,
- "Transfer-Encoding:",
- "chunked")) {
- infof(data, "CONNECT responded chunked\n");
- chunked_encoding = TRUE;
- /* init our chunky engine */
- Curl_httpchunk_init(conn);
- }
- else if(Curl_compareheader(line_start,
- "Proxy-Connection:", "close"))
- closeConnection = TRUE;
- else if(2 == sscanf(line_start, "HTTP/1.%d %d",
- &subversion,
- &k->httpcode)) {
- /* store the HTTP code from the proxy */
- data->info.httpproxycode = k->httpcode;
- }
- /* put back the letter we blanked out before */
- line_start[perline]= letter;
-
- perline=0; /* line starts over here */
- line_start = ptr+1; /* this skips the zero byte we wrote */
- }
- }
- }
- break;
- } /* switch */
- if(Curl_pgrsUpdate(conn))
- return CURLE_ABORTED_BY_CALLBACK;
- } /* while there's buffer left and loop is requested */
-
- if(error)
- return CURLE_RECV_ERROR;
-
- if(data->info.httpproxycode != 200) {
- /* Deal with the possibly already received authenticate
- headers. 'newurl' is set to a new URL if we must loop. */
- result = Curl_http_auth_act(conn);
- if(result)
- return result;
-
- if(conn->bits.close)
- /* the connection has been marked for closure, most likely in the
- Curl_http_auth_act() function and thus we can kill it at once
- below
- */
- closeConnection = TRUE;
- }
-
- if(closeConnection && data->req.newurl) {
- /* Connection closed by server. Don't use it anymore */
- Curl_closesocket(conn, conn->sock[sockindex]);
- conn->sock[sockindex] = CURL_SOCKET_BAD;
- break;
- }
- } /* END READING RESPONSE PHASE */
-
- /* If we are supposed to continue and request a new URL, which basically
- * means the HTTP authentication is still going on so if the tunnel
- * is complete we start over in INIT state */
- if(data->req.newurl &&
- (TUNNEL_COMPLETE == conn->tunnel_state[sockindex])) {
- conn->tunnel_state[sockindex] = TUNNEL_INIT;
- infof(data, "TUNNEL_STATE switched to: %d\n",
- conn->tunnel_state[sockindex]);
- }
-
- } while(data->req.newurl);
-
- if(200 != data->req.httpcode) {
- if(closeConnection && data->req.newurl) {
- conn->bits.proxy_connect_closed = TRUE;
- infof(data, "Connect me again please\n");
- }
- else {
- free(data->req.newurl);
- data->req.newurl = NULL;
- /* failure, close this connection to avoid re-use */
- connclose(conn, "proxy CONNECT failure");
- Curl_closesocket(conn, conn->sock[sockindex]);
- conn->sock[sockindex] = CURL_SOCKET_BAD;
- }
-
- /* to back to init state */
- conn->tunnel_state[sockindex] = TUNNEL_INIT;
-
- if(conn->bits.proxy_connect_closed)
- /* this is not an error, just part of the connection negotiation */
- return CURLE_OK;
- else {
- failf(data, "Received HTTP code %d from proxy after CONNECT",
- data->req.httpcode);
- return CURLE_RECV_ERROR;
- }
- }
-
- conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
-
- /* If a proxy-authorization header was used for the proxy, then we should
- make sure that it isn't accidentally used for the document request
- after we've connected. So let's free and clear it here. */
- Curl_safefree(conn->allocptr.proxyuserpwd);
- conn->allocptr.proxyuserpwd = NULL;
-
- data->state.authproxy.done = TRUE;
-
- infof (data, "Proxy replied OK to CONNECT request\n");
- data->req.ignorebody = FALSE; /* put it (back) to non-ignore state */
- conn->bits.rewindaftersend = FALSE; /* make sure this isn't set for the
- document request */
- return CURLE_OK;
-}
-#endif /* CURL_DISABLE_PROXY */
|