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141 lines
3.3 KiB
141 lines
3.3 KiB
/*
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* Copyright 2010 John-Mark Bell <jmb@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include "utils/http.h"
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#include "utils/http/challenge_internal.h"
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#include "utils/http/generics.h"
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#include "utils/http/parameter_internal.h"
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#include "utils/http/primitives.h"
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/**
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* Representation of an HTTP challenge
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*/
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struct http_challenge {
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http__item base;
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lwc_string *scheme; /**< Challenge scheme */
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http_parameter *params; /**< Challenge parameters */
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};
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/**
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* Destroy an HTTP challenge
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*
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* \param self Challenge to destroy
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*/
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static void http_destroy_challenge(http_challenge *self)
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{
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lwc_string_unref(self->scheme);
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http_parameter_list_destroy(self->params);
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free(self);
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}
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/**
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* Parse an HTTP challenge
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*
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* \param input Pointer to current input byte. Updated on exit.
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* \param challenge Pointer to location to receive challenge
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* \return NSERROR_OK on success,
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* NSERROR_NOMEM on memory exhaustion,
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* NSERROR_NOT_FOUND if no parameter could be parsed
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*
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* The returned challenge is owned by the caller.
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*/
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nserror http__parse_challenge(const char **input, http_challenge **challenge)
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{
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const char *pos = *input;
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http_challenge *result;
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lwc_string *scheme;
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http_parameter *first = NULL;
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http_parameter *params = NULL;
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nserror error;
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/* challenge = auth-scheme 1*SP 1#auth-param
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* auth-scheme = token
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* auth-param = parameter
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*/
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error = http__parse_token(&pos, &scheme);
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if (error != NSERROR_OK)
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return error;
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if (*pos != ' ' && *pos != '\t') {
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lwc_string_unref(scheme);
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return NSERROR_NOT_FOUND;
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}
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http__skip_LWS(&pos);
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error = http__parse_parameter(&pos, &first);
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if (error != NSERROR_OK) {
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lwc_string_unref(scheme);
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return error;
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}
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http__skip_LWS(&pos);
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if (*pos == ',') {
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error = http__item_list_parse(&pos,
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http__parse_parameter, first, ¶ms);
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if (error != NSERROR_OK && error != NSERROR_NOT_FOUND) {
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lwc_string_unref(scheme);
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return error;
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}
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} else {
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params = first;
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}
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result = malloc(sizeof(*result));
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if (result == NULL) {
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http_parameter_list_destroy(params);
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lwc_string_unref(scheme);
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return NSERROR_NOMEM;
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}
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HTTP__ITEM_INIT(result, NULL, http_destroy_challenge);
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result->scheme = scheme;
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result->params = params;
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*challenge = result;
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*input = pos;
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return NSERROR_OK;
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}
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/* See challenge.h for documentation */
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const http_challenge *http_challenge_list_iterate(const http_challenge *cur,
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lwc_string **scheme, http_parameter **parameters)
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{
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if (cur == NULL)
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return NULL;
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*scheme = lwc_string_ref(cur->scheme);
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*parameters = cur->params;
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return (http_challenge *) cur->base.next;
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}
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/* See challenge.h for documentation */
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void http_challenge_list_destroy(http_challenge *list)
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{
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http__item_list_destroy(list);
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}
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