mirror of
https://github.com/curl/curl.git
synced 2026-04-13 12:41:42 +08:00
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
346 lines
9.3 KiB
C
346 lines
9.3 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_HTTP
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#include "urldata.h"
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#include <curl/curl.h>
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#include "http.h"
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#include "http1.h"
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#include "urlapi-int.h"
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/* The last 3 #include files should be in this order */
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#include "curl_printf.h"
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#include "curl_memory.h"
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#include "memdebug.h"
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#define H1_MAX_URL_LEN (8*1024)
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void Curl_h1_req_parse_init(struct h1_req_parser *parser, size_t max_line_len)
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{
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memset(parser, 0, sizeof(*parser));
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parser->max_line_len = max_line_len;
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curlx_dyn_init(&parser->scratch, max_line_len);
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}
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void Curl_h1_req_parse_free(struct h1_req_parser *parser)
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{
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if(parser) {
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Curl_http_req_free(parser->req);
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curlx_dyn_free(&parser->scratch);
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parser->req = NULL;
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parser->done = FALSE;
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}
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}
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static CURLcode trim_line(struct h1_req_parser *parser, int options)
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{
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DEBUGASSERT(parser->line);
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if(parser->line_len) {
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if(parser->line[parser->line_len - 1] == '\n')
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--parser->line_len;
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if(parser->line_len) {
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if(parser->line[parser->line_len - 1] == '\r')
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--parser->line_len;
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else if(options & H1_PARSE_OPT_STRICT)
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return CURLE_URL_MALFORMAT;
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}
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else if(options & H1_PARSE_OPT_STRICT)
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return CURLE_URL_MALFORMAT;
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}
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else if(options & H1_PARSE_OPT_STRICT)
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return CURLE_URL_MALFORMAT;
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if(parser->line_len > parser->max_line_len) {
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return CURLE_URL_MALFORMAT;
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}
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return CURLE_OK;
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}
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static ssize_t detect_line(struct h1_req_parser *parser,
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const char *buf, const size_t buflen,
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CURLcode *err)
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{
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const char *line_end;
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DEBUGASSERT(!parser->line);
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line_end = memchr(buf, '\n', buflen);
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if(!line_end) {
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*err = CURLE_AGAIN;
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return -1;
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}
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parser->line = buf;
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parser->line_len = line_end - buf + 1;
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*err = CURLE_OK;
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return (ssize_t)parser->line_len;
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}
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static ssize_t next_line(struct h1_req_parser *parser,
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const char *buf, const size_t buflen, int options,
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CURLcode *err)
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{
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ssize_t nread = 0;
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if(parser->line) {
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parser->line = NULL;
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parser->line_len = 0;
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curlx_dyn_reset(&parser->scratch);
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}
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nread = detect_line(parser, buf, buflen, err);
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if(nread >= 0) {
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if(curlx_dyn_len(&parser->scratch)) {
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/* append detected line to scratch to have the complete line */
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*err = curlx_dyn_addn(&parser->scratch, parser->line, parser->line_len);
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if(*err)
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return -1;
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parser->line = curlx_dyn_ptr(&parser->scratch);
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parser->line_len = curlx_dyn_len(&parser->scratch);
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}
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*err = trim_line(parser, options);
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if(*err)
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return -1;
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}
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else if(*err == CURLE_AGAIN) {
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/* no line end in `buf`, add it to our scratch */
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*err = curlx_dyn_addn(&parser->scratch, (const unsigned char *)buf,
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buflen);
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nread = (*err) ? -1 : (ssize_t)buflen;
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}
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return nread;
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}
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static CURLcode start_req(struct h1_req_parser *parser,
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const char *scheme_default, int options)
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{
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const char *p, *m, *target, *hv, *scheme, *authority, *path;
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size_t m_len, target_len, hv_len, scheme_len, authority_len, path_len;
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size_t i;
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CURLU *url = NULL;
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CURLcode result = CURLE_URL_MALFORMAT; /* Use this as default fail */
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DEBUGASSERT(!parser->req);
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/* line must match: "METHOD TARGET HTTP_VERSION" */
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p = memchr(parser->line, ' ', parser->line_len);
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if(!p || p == parser->line)
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goto out;
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m = parser->line;
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m_len = p - parser->line;
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target = p + 1;
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target_len = hv_len = 0;
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hv = NULL;
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/* URL may contain spaces so scan backwards */
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for(i = parser->line_len; i > m_len; --i) {
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if(parser->line[i] == ' ') {
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hv = &parser->line[i + 1];
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hv_len = parser->line_len - i;
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target_len = (hv - target) - 1;
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break;
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}
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}
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/* no SPACE found or empty TARGET or empty HTTP_VERSION */
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if(!target_len || !hv_len)
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goto out;
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(void)hv;
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/* The TARGET can be (rfc 9112, ch. 3.2):
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* origin-form: path + optional query
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* absolute-form: absolute URI
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* authority-form: host+port for CONNECT
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* asterisk-form: '*' for OPTIONS
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*
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* from TARGET, we derive `scheme` `authority` `path`
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* origin-form -- -- TARGET
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* absolute-form URL* URL* URL*
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* authority-form -- TARGET --
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* asterisk-form -- -- TARGET
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*/
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scheme = authority = path = NULL;
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scheme_len = authority_len = path_len = 0;
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if(target_len == 1 && target[0] == '*') {
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/* asterisk-form */
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path = target;
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path_len = target_len;
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}
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else if(!strncmp("CONNECT", m, m_len)) {
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/* authority-form */
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authority = target;
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authority_len = target_len;
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}
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else if(target[0] == '/') {
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/* origin-form */
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path = target;
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path_len = target_len;
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}
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else {
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/* origin-form OR absolute-form */
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CURLUcode uc;
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char tmp[H1_MAX_URL_LEN];
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/* default, unless we see an absolute URL */
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path = target;
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path_len = target_len;
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/* URL parser wants 0-termination */
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if(target_len >= sizeof(tmp))
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goto out;
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memcpy(tmp, target, target_len);
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tmp[target_len] = '\0';
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/* See if treating TARGET as an absolute URL makes sense */
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if(Curl_is_absolute_url(tmp, NULL, 0, FALSE)) {
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unsigned int url_options;
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url = curl_url();
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if(!url) {
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result = CURLE_OUT_OF_MEMORY;
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goto out;
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}
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url_options = (CURLU_NON_SUPPORT_SCHEME|
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CURLU_PATH_AS_IS|
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CURLU_NO_DEFAULT_PORT);
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if(!(options & H1_PARSE_OPT_STRICT))
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url_options |= CURLU_ALLOW_SPACE;
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uc = curl_url_set(url, CURLUPART_URL, tmp, url_options);
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if(uc) {
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goto out;
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}
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}
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if(!url && (options & H1_PARSE_OPT_STRICT)) {
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/* we should have an absolute URL or have seen `/` earlier */
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goto out;
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}
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}
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if(url) {
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result = Curl_http_req_make2(&parser->req, m, m_len, url, scheme_default);
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}
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else {
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if(!scheme && scheme_default) {
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scheme = scheme_default;
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scheme_len = strlen(scheme_default);
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}
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result = Curl_http_req_make(&parser->req, m, m_len, scheme, scheme_len,
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authority, authority_len, path, path_len);
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}
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out:
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curl_url_cleanup(url);
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return result;
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}
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ssize_t Curl_h1_req_parse_read(struct h1_req_parser *parser,
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const char *buf, size_t buflen,
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const char *scheme_default, int options,
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CURLcode *err)
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{
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ssize_t nread = 0, n;
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*err = CURLE_OK;
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while(!parser->done) {
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n = next_line(parser, buf, buflen, options, err);
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if(n < 0) {
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if(*err != CURLE_AGAIN) {
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nread = -1;
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}
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*err = CURLE_OK;
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goto out;
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}
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/* Consume this line */
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nread += (size_t)n;
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buf += (size_t)n;
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buflen -= (size_t)n;
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if(!parser->line) {
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/* consumed bytes, but line not complete */
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if(!buflen)
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goto out;
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}
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else if(!parser->req) {
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*err = start_req(parser, scheme_default, options);
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if(*err) {
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nread = -1;
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goto out;
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}
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}
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else if(parser->line_len == 0) {
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/* last, empty line, we are finished */
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if(!parser->req) {
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*err = CURLE_URL_MALFORMAT;
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nread = -1;
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goto out;
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}
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parser->done = TRUE;
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curlx_dyn_reset(&parser->scratch);
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/* last chance adjustments */
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}
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else {
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*err = Curl_dynhds_h1_add_line(&parser->req->headers,
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parser->line, parser->line_len);
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if(*err) {
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nread = -1;
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goto out;
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}
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}
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}
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out:
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return nread;
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}
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CURLcode Curl_h1_req_write_head(struct httpreq *req, int http_minor,
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struct dynbuf *dbuf)
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{
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CURLcode result;
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result = curlx_dyn_addf(dbuf, "%s %s%s%s%s HTTP/1.%d\r\n",
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req->method,
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req->scheme ? req->scheme : "",
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req->scheme ? "://" : "",
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req->authority ? req->authority : "",
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req->path ? req->path : "",
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http_minor);
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if(result)
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goto out;
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result = Curl_dynhds_h1_dprint(&req->headers, dbuf);
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if(result)
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goto out;
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result = curlx_dyn_addn(dbuf, STRCONST("\r\n"));
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out:
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return result;
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}
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#endif /* !CURL_DISABLE_HTTP */
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