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/* |
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* Copyright 2010 John-Mark Bell |
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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 . |
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*/ |
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#include |
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#include |
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#include "utils/http.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 parameter |
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*/ |
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struct http_parameter { |
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http__item base; |
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lwc_string *name; /**< Parameter name */ |
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lwc_string *value; /**< Parameter value */ |
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}; |
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/** |
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* Destructor for an HTTP parameter |
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* |
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* \param self Parameter to destroy |
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*/ |
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static void http_destroy_parameter(http_parameter *self) |
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{ |
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lwc_string_unref(self->name); |
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lwc_string_unref(self->value); |
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free(self); |
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} |
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/** |
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* Parse an HTTP parameter |
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* |
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* \param input Pointer to current input byte. Updated on exit. |
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* \param parameter Pointer to location to receive on-heap parameter. |
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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 parameter is owned by the caller. |
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*/ |
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nserror http__parse_parameter(const char **input, http_parameter **parameter) |
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{ |
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const char *pos = *input; |
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lwc_string *name; |
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lwc_string *value; |
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http_parameter *param; |
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nserror error; |
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/* token "=" ( token | quoted-string ) */ |
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error = http__parse_token(&pos, &name); |
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if (error != NSERROR_OK) |
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return error; |
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http__skip_LWS(&pos); |
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if (*pos != '=') { |
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lwc_string_unref(name); |
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return NSERROR_NOT_FOUND; |
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} |
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pos++; |
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http__skip_LWS(&pos); |
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if (*pos == '"') |
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error = http__parse_quoted_string(&pos, &value); |
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else |
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error = http__parse_token(&pos, &value); |
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if (error != NSERROR_OK) { |
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lwc_string_unref(name); |
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return error; |
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} |
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param = malloc(sizeof(*param)); |
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if (param == NULL) { |
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lwc_string_unref(value); |
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lwc_string_unref(name); |
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return NSERROR_NOMEM; |
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} |
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HTTP__ITEM_INIT(param, NULL, http_destroy_parameter); |
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param->name = name; |
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param->value = value; |
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*parameter = param; |
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*input = pos; |
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return NSERROR_OK; |
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} |
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/* See parameter.h for documentation */ |
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nserror http_parameter_list_find_item(const http_parameter *list, |
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lwc_string *name, lwc_string **value) |
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{ |
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bool match; |
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while (list != NULL) { |
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if (lwc_string_caseless_isequal(name, list->name, |
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&match) == lwc_error_ok && match) |
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break; |
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list = (http_parameter *) list->base.next; |
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} |
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if (list == NULL) |
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return NSERROR_NOT_FOUND; |
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*value = lwc_string_ref(list->value); |
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return NSERROR_OK; |
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} |
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/* See parameter.h for documentation */ |
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const http_parameter *http_parameter_list_iterate(const http_parameter *cur, |
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lwc_string **name, lwc_string **value) |
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{ |
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if (cur == NULL) |
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return NULL; |
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*name = lwc_string_ref(cur->name); |
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*value = lwc_string_ref(cur->value); |
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return (http_parameter *) cur->base.next; |
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} |
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/* See parameter.h for documentation */ |
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void http_parameter_list_destroy(http_parameter *list) |
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{ |
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http__item_list_destroy(list); |
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} |
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