8e79f2ee9c
Based on Nekogram. Key additions: - Rebrand to FoxiGram (app name, APK name, applicationId com.foxigram.app) - Embedded Xray (VLESS+Reality) proxy client via JNI libxray.so - Bundled hidden one-tap proxies (LTE + WiFi), read-only in UI - Auto-restore proxy on restart, rebind to active network (LTE/WiFi) - Server credentials externalized to git-ignored XrayServers.java (+ template) - libxray Go source included; compiled .so, keystore, google-services.json ignored
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
// Copyright 2023 The Chromium Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "ip_util.h"
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BSSL_NAMESPACE_BEGIN
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bool IsValidNetmask(der::Input mask) {
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if (mask.size() != kIPv4AddressSize && mask.size() != kIPv6AddressSize) {
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return false;
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}
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for (size_t i = 0; i < mask.size(); i++) {
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uint8_t b = mask[i];
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if (b != 0xff) {
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// b must be all ones followed by all zeros, so ~b must be all zeros
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// followed by all ones.
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uint8_t inv = ~b;
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if ((inv & (inv + 1)) != 0) {
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return false;
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}
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// The remaining bytes must be all zeros.
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for (size_t j = i + 1; j < mask.size(); j++) {
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if (mask[j] != 0) {
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return false;
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}
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}
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return true;
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}
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}
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return true;
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}
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bool IPAddressMatchesWithNetmask(der::Input addr1, der::Input addr2,
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der::Input mask) {
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if (addr1.size() != addr2.size() || addr1.size() != mask.size()) {
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return false;
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}
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for (size_t i = 0; i < addr1.size(); i++) {
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if ((addr1[i] & mask[i]) != (addr2[i] & mask[i])) {
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return false;
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}
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}
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return true;
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}
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BSSL_NAMESPACE_END
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