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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2020, 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 https://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"
#ifndef CURL_DISABLE_GEMINI
#include "urldata.h"
#include <curl/curl.h>
#include "transfer.h"
#include "sendf.h"
#include "connect.h"
#include "progress.h"
#include "gemini.h"
#include "select.h"
#include "strdup.h"
#include "url.h"
#include "escape.h"
#include "warnless.h"
#include "curl_printf.h"
#include "curl_memory.h"
#include "vtls/vtls.h"
/* The last #include file should be: */
#include "memdebug.h"
/*
* Forward declarations.
*/
static CURLcode gemini_do(struct connectdata *conn, bool *done);
static CURLcode gemini_connecting(struct connectdata *conn, bool *done);
CURLcode Curl_gemini_connect(struct connectdata *conn, bool *done);
/*
* Gemini protocol handler.
*/
const struct Curl_handler Curl_handler_gemini = {
"GEMINI", /* scheme */
ZERO_NULL, /* setup_connection */
gemini_do, /* do_it */
ZERO_NULL, /* done */
ZERO_NULL, /* do_more */
Curl_gemini_connect, /* connect_it */
gemini_connecting, /* connecting */
ZERO_NULL, /* doing */
ZERO_NULL, /* proto_getsock */
ZERO_NULL, /* doing_getsock */
ZERO_NULL, /* domore_getsock */
ZERO_NULL, /* perform_getsock */
ZERO_NULL, /* disconnect */
ZERO_NULL, /* readwrite */
ZERO_NULL, /* connection_check */
PORT_GEMINI, /* defport */
CURLPROTO_GEMINI, /* protocol */
PROTOPT_NONE /* flags */
};
static CURLcode gemini_do(struct connectdata *conn, bool *done)
{
CURLcode result = CURLE_OK;
struct Curl_easy *data = conn->data;
curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
timediff_t timeout_ms;
ssize_t amount, k;
size_t len;
int what;
char *req = NULL;
char *u = NULL;
*done = TRUE; /* unconditionally */
/* format the request URL */
if (curl_url_get(data->state.uh, CURLUPART_URL, &u, 0) != CURLUE_OK)
return CURLE_URL_MALFORMAT;
/* build the request line */
req = aprintf("%s\r\n", u);
if (!req)
return CURLE_OUT_OF_MEMORY;
len = strlen(req);
/* We use Curl_write instead of Curl_sendf to make sure the entire buffer is
sent, which could be sizeable with long selectors. */
k = curlx_uztosz(len);
for(;;) {
result = Curl_write(conn, sockfd, req, k, &amount);
if(!result) { /* Which may not have written it all! */
result = Curl_client_write(conn, CLIENTWRITE_HEADER, req, amount);
if(result)
break;
k -= amount;
req += amount;
if(k < 1)
break; /* but it did write it all */
}
else
break;
timeout_ms = Curl_timeleft(conn->data, NULL, FALSE);
if(timeout_ms < 0) {
result = CURLE_OPERATION_TIMEDOUT;
break;
}
if(!timeout_ms)
timeout_ms = TIMEDIFF_T_MAX;
/* Don't busyloop. The entire loop thing is a work-around as it causes a
BLOCKING behavior which is a NO-NO. This function should rather be
split up in a do and a doing piece where the pieces that aren't
possible to send now will be sent in the doing function repeatedly
until the entire request is sent.
*/
what = SOCKET_WRITABLE(sockfd, timeout_ms);
if(what < 0) {
result = CURLE_SEND_ERROR;
break;
}
else if(!what) {
result = CURLE_OPERATION_TIMEDOUT;
break;
}
}
Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
return CURLE_OK;
}
static CURLcode gemini_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)
connclose(conn, "Failed TLS connection");
return result;
}
/*
* Curl_http_connect() performs HTTP stuff to do at connect-time, called from
* the generic Curl_connect().
*/
CURLcode Curl_gemini_connect(struct connectdata *conn, bool *done)
{
CURLcode result;
/* perform SSL initialization */
result = gemini_connecting(conn, done);
if(result)
return result;
return CURLE_OK;
}
#endif /*CURL_DISABLE_GEMINI*/
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