mirror of
https://github.com/lexborisov/Modest
synced 2024-11-22 13:51:39 +03:00
632 lines
17 KiB
C
632 lines
17 KiB
C
/*
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Copyright (C) 2016-2017 Alexander Borisov
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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Author: lex.borisov@gmail.com (Alexander Borisov)
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*/
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#include "myurl/host.h"
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#include "myurl/url.h"
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#include "myurl/resources.h"
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#include "mycore/utils/resources.h"
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myurl_host_t * myurl_host_create(myurl_t* url)
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{
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myurl_host_t *host = url->callback_malloc(sizeof(myurl_host_t), url->callback_ctx);
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if(host)
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memset(host, 0, sizeof(myurl_host_t));
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return host;
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}
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mystatus_t myurl_host_init(myurl_t* url)
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{
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return MyURL_STATUS_OK;
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}
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void myurl_host_clean(myurl_t* url, myurl_host_t* host)
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{
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if(host->type == MyURL_HOST_TYPE_DOMAIN)
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url->callback_free(host->value.domain.value, url->callback_ctx);
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if(host->type == MyURL_HOST_TYPE_OPAQUE)
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url->callback_free(host->value.opaque.value, url->callback_ctx);
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memset(host, 0, sizeof(myurl_host_t));
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}
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myurl_host_t * myurl_host_destroy(myurl_t* url, myurl_host_t* host, bool destroy_self)
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{
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if(host == NULL)
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return NULL;
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myurl_host_clean(url, host);
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if(destroy_self) {
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return url->callback_free(host, url->callback_ctx);
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}
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return host;
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}
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mystatus_t myurl_host_copy(myurl_t* url, myurl_host_t* host_from, myurl_host_t* host_to)
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{
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host_to->type = host_from->type;
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switch (host_from->type) {
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case MyURL_HOST_TYPE_DOMAIN:
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return myurl_utils_data_copy_set(url, host_from->value.domain.value, host_from->value.domain.length,
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&host_to->value.domain.value, &host_to->value.domain.length);
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default:
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break;
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}
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return MyURL_STATUS_OK;
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}
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/* Create Values */
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myurl_host_ipv_t * myurl_host_ipv6_entry_create(myurl_t* url)
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{
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myurl_host_ipv_t *ipv = url->callback_malloc(sizeof(myurl_host_ipv_t), url->callback_ctx);
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if(ipv)
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memset(ipv, 0, sizeof(myurl_host_ipv_t));
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return ipv;
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}
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/* Parsing */
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mystatus_t myurl_host_parser(myurl_t* url, myurl_host_t* host, const char* data, size_t data_size, bool is_special)
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{
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size_t data_length = 0;
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/* 1 */
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if(data[data_length] == '[') {
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if(data[ (data_size - 1) ] != ']') {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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data_length++;
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host->type = MyURL_HOST_TYPE_IPv6;
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return myurl_host_ipv6_parser(&host->value.ipv, &data[data_length], (data_size - 2));
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}
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/* 2 */
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if(is_special == false) {
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host->type = MyURL_HOST_TYPE_OPAQUE;
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return myurl_host_opaque_host_parser(url, &host->value.opaque, data, data_size);
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}
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/* 3 */
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char *domain = myurl_utils_data_copy(url, data, data_size);
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size_t domain_size = myurl_utils_percent_decode_bytes_in_data(domain, data_size);
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/* 4 */
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char* ascii_domain;
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size_t ascii_domain_size;
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mystatus_t status = myurl_host_domain_to_ascii(url, &ascii_domain, &ascii_domain_size, domain, domain_size,
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false, false, MyURL_HOST_IDNA_PROCESSING_OPTION_NONTRANSITIONAL);
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/* 5 */
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if(status != MyURL_STATUS_OK) {
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// parse error
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return status;
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}
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/* 6 */
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const unsigned char *u_ascii_domain = (const unsigned char*)ascii_domain;
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data_length = 0;
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while(data_length < ascii_domain_size) {
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if(myurl_resources_static_map_forbidden_host_code_point[ u_ascii_domain[data_length] ] != 0xff) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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data_length++;
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}
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/* 7 */
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bool failure;
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if(myurl_host_ipv4_parser(&host->value.ipv, ascii_domain, ascii_domain_size, &failure) == MyURL_STATUS_OK) {
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url->callback_free(ascii_domain, url->callback_ctx);
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host->type = MyURL_HOST_TYPE_IPv4;
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return MyURL_STATUS_OK;
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}
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if(failure) {
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// parse error
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url->callback_free(ascii_domain, url->callback_ctx);
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return MyURL_STATUS_ERROR;
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}
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host->type = MyURL_HOST_TYPE_DOMAIN;
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host->value.domain.value = ascii_domain;
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host->value.domain.length = ascii_domain_size;
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return MyURL_STATUS_OK;
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}
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mystatus_t myurl_host_domain_to_ascii(myurl_t* url, char** return_domain, size_t* return_domain_size,
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char* domain, size_t domain_size,
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bool UseSTD3ASCIIRules, bool VerifyDnsLength,
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myurl_host_idna_processing_option_t opt)
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{
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*return_domain = domain;
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*return_domain_size = domain_size;
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return MyURL_STATUS_OK;
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}
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mystatus_t myurl_host_opaque_host_parser(myurl_t* url, myurl_host_opaque_t* opaque, const char* data, size_t data_size)
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{
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// TODO: see this
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/* 1 */
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/* If input contains a forbidden host code point excluding "%", validation error, return failure. */
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size_t length = 0, offset = 0;
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const unsigned char *u_data = (const unsigned char*)data;
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while(length < data_size) {
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if(myurl_resources_static_map_forbidden_host_code_point[ u_data[length] ] != 0xff) {
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offset = length;
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while(offset) {
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offset--;
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if(data[offset] == '%') {
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break;
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}
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}
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if(offset == 0 && data[offset] != '%') {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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}
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length++;
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}
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/* 2 */
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length = 0;
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char *in_hex_val = myurl_utils_percent_encode(url, data, data_size, myurl_resources_static_map_C0, &length);
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if(in_hex_val == NULL) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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/* 3 */
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opaque->value = in_hex_val;
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opaque->length = length;
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return MyURL_STATUS_OK;
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}
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mystatus_t myurl_host_ipv4_number_parser(const char* data, size_t data_size, unsigned int* number, bool* validationErrorFlag)
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{
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size_t length = 0;
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/* 1 */
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unsigned int r = 10;
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/* 2 */
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if(data_size > 1) {
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if(*data == '0' && (data[1] == 'x' || data[1] == 'X')) {
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/* 2.1 */
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*validationErrorFlag = true;
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/* 2.2 */
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length += 2;
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/* 2.3 */
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r = 16;
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}
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else if(*data == '0') {
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/* 3.1 */
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*validationErrorFlag = true;
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/* 3.2 */
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length++;
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/* 3.3 */
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r = 8;
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}
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}
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*number = 0;
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if(r == 10) {
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while(length < data_size) {
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if(mycore_string_chars_num_map[ (unsigned char)data[length] ] == 0xff) {
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return MyURL_STATUS_ERROR;
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}
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*number = mycore_string_chars_num_map[ (unsigned char)data[length] ] + *number * r;
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length++;
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}
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}
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else if(r == 16) {
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while(length < data_size) {
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if(mycore_string_chars_hex_map[ (unsigned char)data[length] ] == 0xff) {
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return MyURL_STATUS_ERROR;
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}
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*number = mycore_string_chars_hex_map[ (unsigned char)data[length] ] + *number * r;
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length++;
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}
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}
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else {
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while(length < data_size) {
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if((unsigned char)data[length] < 0x30 || (unsigned char)data[length] > 0x37) {
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return MyURL_STATUS_ERROR;
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}
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*number = mycore_string_chars_num_map[ (unsigned char)data[length] ] + *number * r;
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length++;
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}
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}
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return MyURL_STATUS_OK;
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}
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mystatus_t myurl_host_ipv4_parser(myurl_host_ipv_t* ipv, const char* data, size_t data_size, bool* failure)
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{
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if(failure)
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*failure = false;
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size_t data_length = 0;
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memset(ipv, 0, sizeof(myurl_host_ipv_t));
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/* 1 */
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bool validationErrorFlag = false;
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/* 2 */
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size_t part_begin = data_length;
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size_t part_count = 0;
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while(data_length < data_size)
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{
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if(data[data_length] == '.')
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{
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/* 4 */
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if(part_count == 3) {
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return MyURL_STATUS_ERROR;
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}
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/* 6.1 */
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if((data_length - part_begin) == 0) {
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return MyURL_STATUS_ERROR;
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}
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if(myurl_host_ipv4_number_parser(&data[part_begin], (data_length - part_begin), &ipv->pieces[part_count], &validationErrorFlag)) {
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return MyURL_STATUS_ERROR;
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}
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part_begin = data_length + 1;
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part_count++;
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}
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data_length++;
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}
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if(data_length - part_begin) {
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if(myurl_host_ipv4_number_parser(&data[part_begin], (data_length - part_begin), &ipv->pieces[part_count], &validationErrorFlag)) {
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return MyURL_STATUS_ERROR;
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}
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part_count++;
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}
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if(part_count == 0) {
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return MyURL_STATUS_ERROR;
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}
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/* 7 */
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// if(validationErrorFlag) {
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// // parse error
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// }
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/* 8 */
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for(size_t i = 0; i < part_count; i++) {
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if(ipv->pieces[i] > 255) {
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// parse error
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/* if not last */
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if(i != (part_count - 1)) {
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if(failure)
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*failure = true;
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return MyURL_STATUS_ERROR;
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}
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}
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}
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/* 9 */
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if(ipv->pieces[(part_count - 1)] >= mycore_power(256, (5 - part_count))) {
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if(failure)
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*failure = true;
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return MyURL_STATUS_ERROR;
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}
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/* 10 */
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part_count--;
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unsigned int ipv4 = ipv->pieces[part_count];
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/* calc end char count */
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for(size_t i = 0; i < part_count; i++) {
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size_t n = mycore_power(256, (3 - i));
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ipv4 += ipv->pieces[i] * n;
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}
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ipv->pieces[0] = ipv4;
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ipv->type = MyURL_HOST_TYPE_IP_v4;
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return MyURL_STATUS_OK;
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}
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mystatus_t myurl_host_ipv6_parser(myurl_host_ipv_t* ipv, const char* data, size_t data_size)
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{
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size_t data_length = 0;
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const unsigned char *u_data = (const unsigned char*)data;
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/* 1 */
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memset(ipv, 0, sizeof(myurl_host_ipv_t));
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/* 2 */
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unsigned int *piece = ipv->pieces;
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unsigned int *piece_pointer = ipv->pieces;
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/* 3 */
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unsigned int *compress_pointer = NULL;
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ipv->type = MyURL_HOST_TYPE_IP_v6;
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/* 5 */
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if(data[data_length] == ':') {
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data_length++;
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/* 5.1 */
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if(data_length >= data_size || data[data_length] != ':') {
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return MyURL_STATUS_ERROR;
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}
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/* 5.2 */
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data_length++;
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/* 5.3 */
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piece_pointer++;
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piece = piece_pointer;
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compress_pointer = piece_pointer;
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}
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/* 6 */
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while(data_length < data_size)
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{
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/* 6.1 */
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if(piece_pointer == &ipv->pieces[8]) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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/* 6.2 */
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if(data[data_length] == ':') {
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/* 6.2.1 */
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if(compress_pointer != NULL) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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/* 6.2.2 */
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data_length++;
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piece_pointer++;
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piece = piece_pointer;
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compress_pointer = piece_pointer;
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continue;
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}
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/* 6.3 and 6.4 */
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unsigned int num = 0;
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size_t i = 0;
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while((i < 4) && (data_length < data_size)) {
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if(mycore_string_chars_hex_map[ u_data[data_length] ] != 0xff) {
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num <<= 4;
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num |= mycore_string_chars_hex_map[ u_data[data_length] ];
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}
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else
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break;
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data_length++;
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i++;
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}
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/* 6.5 */
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if(data_length < data_size)
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{
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if(data[data_length] == '.') {
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/* 6.5.1 */
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if(i == 0) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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/* 6.5.2 */
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data_length -= i;
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/* 6.5.3 */
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if(myurl_host_ipv6_ipv4_parser(ipv, &data[data_length], (data_size - data_length), &piece_pointer)) {
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return MyURL_STATUS_ERROR;
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}
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break;
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}
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else if(data[data_length] == ':') {
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/* 6.5.1 */
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data_length++;
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/* 6.5.2 */
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if(data_length >= data_size) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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}
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else {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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}
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/* 6.6 */
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*piece = num;
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/* 6.7 */
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piece_pointer++;
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piece = piece_pointer;
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}
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/* 11 */
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/* 11.1 */
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if(compress_pointer) {
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unsigned int swaps = (unsigned int)(piece_pointer - compress_pointer);
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size_t i = 7;
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/* 11.2 and 11.3 */
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while(i && swaps > 0) {
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unsigned int *tmp = compress_pointer + (swaps - 1);
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unsigned int num = *tmp;
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*tmp = ipv->pieces[i];
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ipv->pieces[i] = num;
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swaps--;
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i--;
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}
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return MyURL_STATUS_OK;
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}
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/* 12 */
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if(compress_pointer == NULL && piece_pointer != &ipv->pieces[8]) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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return MyURL_STATUS_OK;
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}
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mystatus_t myurl_host_ipv6_ipv4_parser(myurl_host_ipv_t* ipv, const char* data, size_t data_size, unsigned int** piece_pointer)
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{
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size_t data_length = 0;
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const unsigned char *u_data = (const unsigned char*)data;
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/* 8 */
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if((*piece_pointer - ipv->pieces) > 6) {
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// parse error
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return MyURL_STATUS_ERROR;
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}
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/* 9 */
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unsigned int numbersSeen = 0;
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/* 10 */
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while(data_length < data_size)
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{
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/* 10.1 */
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int value = -1;
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/* 10.2 */
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if(numbersSeen > 0)
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{
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if(data[data_length] != '.' || numbersSeen >= 4) {
|
|
// parse error
|
|
return MyURL_STATUS_ERROR;
|
|
}
|
|
|
|
data_length++;
|
|
|
|
if(data_length >= data_size)
|
|
return MyURL_STATUS_ERROR;
|
|
}
|
|
|
|
/* 10.3 */
|
|
if(mycore_string_chars_num_map[ u_data[data_length] ] == 0xff) {
|
|
// parse error
|
|
return MyURL_STATUS_ERROR;
|
|
}
|
|
|
|
/* 10.4 */
|
|
while(data_length < data_size && mycore_string_chars_num_map[ u_data[data_length] ] != 0xff)
|
|
{
|
|
/* 10.4.1 */
|
|
unsigned int number = mycore_string_chars_num_map[ u_data[data_length] ];
|
|
|
|
/* 10.4.2 */
|
|
if(value == -1) {
|
|
value = (int)number;
|
|
}
|
|
else if(value == 0) {
|
|
// parse error
|
|
return MyURL_STATUS_ERROR;
|
|
}
|
|
else {
|
|
value = value * 10 + number;
|
|
}
|
|
|
|
/* 10.4.3 */
|
|
if(value > 255) {
|
|
// parse error
|
|
return MyURL_STATUS_ERROR;
|
|
}
|
|
|
|
/* 10.4.2 */
|
|
data_length++;
|
|
}
|
|
|
|
/* 10.5 */
|
|
**piece_pointer = **piece_pointer * 0x100 + value;
|
|
|
|
/* 10.6 */
|
|
numbersSeen++;
|
|
|
|
/* 10.7 */ // maybe: (numbersSeen % 2 == 0) ?
|
|
if(numbersSeen == 2 || numbersSeen == 4) {
|
|
(*piece_pointer)++;
|
|
}
|
|
|
|
/* 10.8 */
|
|
if(data_length >= data_size && numbersSeen != 4) {
|
|
// parse error
|
|
return MyURL_STATUS_ERROR;
|
|
}
|
|
}
|
|
|
|
return MyURL_STATUS_OK;
|
|
}
|
|
|
|
|