d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
244 lines
6.8 KiB
C++
244 lines
6.8 KiB
C++
/**************************************************************************/
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/* ip_address.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "ip_address.h"
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/*
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IPAddress::operator Variant() const {
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return operator String();
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}*/
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#include <stdio.h>
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#include <string.h>
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IPAddress::operator String() const {
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if (wildcard) {
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return "*";
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}
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if (!valid) {
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return "";
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}
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if (is_ipv4()) {
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// IPv4 address mapped to IPv6
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return itos(field8[12]) + "." + itos(field8[13]) + "." + itos(field8[14]) + "." + itos(field8[15]);
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}
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String ret;
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for (int i = 0; i < 8; i++) {
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if (i > 0) {
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ret = ret + ":";
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}
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uint16_t num = (field8[i * 2] << 8) + field8[i * 2 + 1];
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ret = ret + String::num_int64(num, 16);
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}
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return ret;
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}
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static void _parse_hex(const String &p_string, int p_start, uint8_t *p_dst) {
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uint16_t ret = 0;
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for (int i = p_start; i < p_start + 4; i++) {
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if (i >= p_string.length()) {
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break;
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}
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int n = 0;
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char32_t c = p_string[i];
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if (is_digit(c)) {
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n = c - '0';
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} else if (c >= 'a' && c <= 'f') {
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n = 10 + (c - 'a');
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} else if (c >= 'A' && c <= 'F') {
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n = 10 + (c - 'A');
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} else if (c == ':') {
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break;
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} else {
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ERR_FAIL_MSG("Invalid character in IPv6 address: " + p_string + ".");
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}
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ret = ret << 4;
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ret += n;
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}
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p_dst[0] = ret >> 8;
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p_dst[1] = ret & 0xff;
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}
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void IPAddress::_parse_ipv6(const String &p_string) {
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static const int parts_total = 8;
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int parts[parts_total] = { 0 };
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int parts_count = 0;
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bool part_found = false;
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bool part_skip = false;
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bool part_ipv4 = false;
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int parts_idx = 0;
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for (int i = 0; i < p_string.length(); i++) {
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char32_t c = p_string[i];
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if (c == ':') {
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if (i == 0) {
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continue; // next must be a ":"
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}
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if (!part_found) {
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part_skip = true;
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parts[parts_idx++] = -1;
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}
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part_found = false;
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} else if (c == '.') {
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part_ipv4 = true;
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} else if (is_hex_digit(c)) {
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if (!part_found) {
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parts[parts_idx++] = i;
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part_found = true;
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++parts_count;
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}
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} else {
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ERR_FAIL_MSG("Invalid character in IPv6 address: " + p_string + ".");
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}
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}
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int parts_extra = 0;
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if (part_skip) {
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parts_extra = parts_total - parts_count;
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}
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int idx = 0;
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for (int i = 0; i < parts_idx; i++) {
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if (parts[i] == -1) {
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for (int j = 0; j < parts_extra; j++) {
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field16[idx++] = 0;
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}
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continue;
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}
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if (part_ipv4 && i == parts_idx - 1) {
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_parse_ipv4(p_string, parts[i], (uint8_t *)&field16[idx]); // should be the last one
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} else {
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_parse_hex(p_string, parts[i], (uint8_t *)&(field16[idx++]));
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}
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}
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}
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void IPAddress::_parse_ipv4(const String &p_string, int p_start, uint8_t *p_ret) {
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String ip;
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if (p_start != 0) {
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ip = p_string.substr(p_start, p_string.length() - p_start);
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} else {
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ip = p_string;
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}
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int slices = ip.get_slice_count(".");
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ERR_FAIL_COND_MSG(slices != 4, "Invalid IP address string: " + ip + ".");
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for (int i = 0; i < 4; i++) {
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p_ret[i] = ip.get_slicec('.', i).to_int();
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}
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}
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void IPAddress::clear() {
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memset(&field8[0], 0, sizeof(field8));
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valid = false;
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wildcard = false;
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}
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bool IPAddress::is_ipv4() const {
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return (field32[0] == 0 && field32[1] == 0 && field16[4] == 0 && field16[5] == 0xffff);
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}
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const uint8_t *IPAddress::get_ipv4() const {
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ERR_FAIL_COND_V_MSG(!is_ipv4(), &(field8[12]), "IPv4 requested, but current IP is IPv6."); // Not the correct IPv4 (it's an IPv6), but we don't want to return a null pointer risking an engine crash.
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return &(field8[12]);
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}
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void IPAddress::set_ipv4(const uint8_t *p_ip) {
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clear();
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valid = true;
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field16[5] = 0xffff;
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field32[3] = *((const uint32_t *)p_ip);
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}
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const uint8_t *IPAddress::get_ipv6() const {
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return field8;
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}
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void IPAddress::set_ipv6(const uint8_t *p_buf) {
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clear();
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valid = true;
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for (int i = 0; i < 16; i++) {
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field8[i] = p_buf[i];
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}
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}
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IPAddress::IPAddress(const String &p_string) {
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clear();
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if (p_string == "*") {
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// Wildcard (not a valid IP)
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wildcard = true;
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} else if (p_string.find(":") >= 0) {
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// IPv6
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_parse_ipv6(p_string);
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valid = true;
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} else if (p_string.get_slice_count(".") == 4) {
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// IPv4 (mapped to IPv6 internally)
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field16[5] = 0xffff;
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_parse_ipv4(p_string, 0, &field8[12]);
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valid = true;
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} else {
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ERR_PRINT("Invalid IP address.");
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}
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}
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_FORCE_INLINE_ static void _32_to_buf(uint8_t *p_dst, uint32_t p_n) {
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p_dst[0] = (p_n >> 24) & 0xff;
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p_dst[1] = (p_n >> 16) & 0xff;
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p_dst[2] = (p_n >> 8) & 0xff;
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p_dst[3] = (p_n >> 0) & 0xff;
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}
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IPAddress::IPAddress(uint32_t p_a, uint32_t p_b, uint32_t p_c, uint32_t p_d, bool is_v6) {
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clear();
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valid = true;
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if (!is_v6) {
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// Mapped to IPv6
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field16[5] = 0xffff;
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field8[12] = p_a;
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field8[13] = p_b;
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field8[14] = p_c;
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field8[15] = p_d;
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} else {
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_32_to_buf(&field8[0], p_a);
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_32_to_buf(&field8[4], p_b);
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_32_to_buf(&field8[8], p_c);
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_32_to_buf(&field8[12], p_d);
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}
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}
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