mirror of
https://github.com/curl/curl.git
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255aac56f9
Move curlx_ functions into its own subdir. The idea is to use the curlx_ prefix proper on these functions, and use these same function names both in tool, lib and test suite source code. Stop the previous special #define setup for curlx_ names. The printf defines are now done for the library alone. Tests no longer use the printf defines. The tool code sets its own defines. The printf functions are not curlx, they are publicly available. The strcase defines are not curlx_ functions and should not be used by tool or server code. dynbuf, warnless, base64, strparse, timeval, timediff are now proper curlx functions. When libcurl is built statically, the functions from the library can be used as-is. The key is then that the functions must work as-is, without having to be recompiled for use in tool/tests. This avoids symbol collisions - when libcurl is built statically, we use those functions directly when building the tool/tests. When libcurl is shared, we build/link them separately for the tool/tests. Assisted-by: Jay Satiro Closes #17253
247 lines
7.6 KiB
C
247 lines
7.6 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) 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 https://curl.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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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifndef CURL_DISABLE_GOPHER
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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 "cfilters.h"
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#include "connect.h"
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#include "progress.h"
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#include "gopher.h"
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#include "select.h"
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#include "strdup.h"
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#include "vtls/vtls.h"
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#include "url.h"
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#include "escape.h"
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#include "curlx/warnless.h"
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#include "curl_printf.h"
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#include "curl_memory.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 CURLcode gopher_do(struct Curl_easy *data, bool *done);
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#ifdef USE_SSL
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static CURLcode gopher_connect(struct Curl_easy *data, bool *done);
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static CURLcode gopher_connecting(struct Curl_easy *data, bool *done);
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#endif
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/*
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* Gopher protocol handler.
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* This is also a nice simple template to build off for simple
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* connect-command-download protocols.
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*/
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const struct Curl_handler Curl_handler_gopher = {
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"gopher", /* scheme */
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ZERO_NULL, /* setup_connection */
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gopher_do, /* do_it */
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ZERO_NULL, /* done */
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ZERO_NULL, /* do_more */
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ZERO_NULL, /* 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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ZERO_NULL, /* 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, /* write_resp */
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ZERO_NULL, /* write_resp_hd */
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ZERO_NULL, /* connection_check */
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ZERO_NULL, /* attach connection */
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ZERO_NULL, /* follow */
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PORT_GOPHER, /* defport */
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CURLPROTO_GOPHER, /* protocol */
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CURLPROTO_GOPHER, /* family */
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PROTOPT_NONE /* flags */
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};
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#ifdef USE_SSL
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const struct Curl_handler Curl_handler_gophers = {
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"gophers", /* scheme */
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ZERO_NULL, /* setup_connection */
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gopher_do, /* do_it */
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ZERO_NULL, /* done */
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ZERO_NULL, /* do_more */
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gopher_connect, /* connect_it */
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gopher_connecting, /* connecting */
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ZERO_NULL, /* doing */
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ZERO_NULL, /* proto_getsock */
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ZERO_NULL, /* 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, /* write_resp */
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ZERO_NULL, /* write_resp_hd */
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ZERO_NULL, /* connection_check */
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ZERO_NULL, /* attach connection */
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ZERO_NULL, /* follow */
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PORT_GOPHER, /* defport */
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CURLPROTO_GOPHERS, /* protocol */
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CURLPROTO_GOPHER, /* family */
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PROTOPT_SSL /* flags */
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};
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static CURLcode gopher_connect(struct Curl_easy *data, bool *done)
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{
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(void)data;
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(void)done;
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return CURLE_OK;
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}
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static CURLcode gopher_connecting(struct Curl_easy *data, bool *done)
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{
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struct connectdata *conn = data->conn;
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CURLcode result;
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result = Curl_conn_connect(data, FIRSTSOCKET, TRUE, done);
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if(result)
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connclose(conn, "Failed TLS connection");
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*done = TRUE;
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return result;
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}
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#endif
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static CURLcode gopher_do(struct Curl_easy *data, bool *done)
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{
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CURLcode result = CURLE_OK;
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struct connectdata *conn = data->conn;
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curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
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char *gopherpath;
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char *path = data->state.up.path;
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char *query = data->state.up.query;
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char *sel = NULL;
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char *sel_org = NULL;
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timediff_t timeout_ms;
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ssize_t k;
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size_t amount, len;
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int what;
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*done = TRUE; /* unconditionally */
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/* path is guaranteed non-NULL */
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DEBUGASSERT(path);
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if(query)
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gopherpath = aprintf("%s?%s", path, query);
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else
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gopherpath = strdup(path);
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if(!gopherpath)
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return CURLE_OUT_OF_MEMORY;
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/* Create selector. Degenerate cases: / and /1 => convert to "" */
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if(strlen(gopherpath) <= 2) {
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sel = (char *)CURL_UNCONST("");
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len = strlen(sel);
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free(gopherpath);
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}
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else {
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char *newp;
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/* Otherwise, drop / and the first character (i.e., item type) ... */
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newp = gopherpath;
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newp += 2;
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/* ... and finally unescape */
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result = Curl_urldecode(newp, 0, &sel, &len, REJECT_ZERO);
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free(gopherpath);
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if(result)
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return result;
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sel_org = sel;
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}
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k = curlx_uztosz(len);
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for(;;) {
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/* Break out of the loop if the selector is empty because OpenSSL and/or
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LibreSSL fail with errno 0 if this is the case. */
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if(strlen(sel) < 1)
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break;
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result = Curl_xfer_send(data, sel, k, FALSE, &amount);
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if(!result) { /* Which may not have written it all! */
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result = Curl_client_write(data, CLIENTWRITE_HEADER, sel, amount);
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if(result)
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break;
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k -= amount;
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sel += amount;
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if(k < 1)
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break; /* but it did write it all */
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}
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else
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break;
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timeout_ms = Curl_timeleft(data, NULL, FALSE);
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if(timeout_ms < 0) {
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result = CURLE_OPERATION_TIMEDOUT;
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break;
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}
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if(!timeout_ms)
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timeout_ms = TIMEDIFF_T_MAX;
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/* Do not busyloop. The entire loop thing is a work-around as it causes a
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BLOCKING behavior which is a NO-NO. This function should rather be
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split up in a do and a doing piece where the pieces that are not
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possible to send now will be sent in the doing function repeatedly
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until the entire request is sent.
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*/
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what = SOCKET_WRITABLE(sockfd, timeout_ms);
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if(what < 0) {
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result = CURLE_SEND_ERROR;
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break;
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}
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else if(!what) {
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result = CURLE_OPERATION_TIMEDOUT;
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break;
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}
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}
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free(sel_org);
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if(!result)
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result = Curl_xfer_send(data, "\r\n", 2, FALSE, &amount);
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if(result) {
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failf(data, "Failed sending Gopher request");
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return result;
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}
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result = Curl_client_write(data, CLIENTWRITE_HEADER, "\r\n", 2);
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if(result)
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return result;
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Curl_xfer_setup1(data, CURL_XFER_RECV, -1, FALSE);
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return CURLE_OK;
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}
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#endif /* CURL_DISABLE_GOPHER */
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