70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
// Copyright 2022 Google LLC
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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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#ifndef CONTRIB_LIBIDN2_LIBIDN2_SAPI_H_
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#define CONTRIB_LIBIDN2_LIBIDN2_SAPI_H_
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#include <idn2.h>
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#include <syscall.h>
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#include <cstdlib>
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#include "libidn2_sapi.sapi.h" // NOLINT(build/include)
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#include "absl/log/die_if_null.h"
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#include "sandboxed_api/util/fileops.h"
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class Idn2SapiSandbox : public IDN2Sandbox {
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public:
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std::unique_ptr<sandbox2::Policy> ModifyPolicy(
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sandbox2::PolicyBuilder*) override {
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return sandbox2::PolicyBuilder()
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.AllowSystemMalloc()
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.AllowRead()
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.AllowStat()
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.AllowWrite()
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.AllowExit()
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.AllowGetPIDs()
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.AllowSyscalls({
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__NR_futex,
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__NR_close,
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__NR_lseek,
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})
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.BlockSyscallWithErrno(__NR_openat, ENOENT)
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.BuildOrDie();
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}
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};
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class IDN2Lib {
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public:
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explicit IDN2Lib(Idn2SapiSandbox* sandbox)
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: sandbox_(ABSL_DIE_IF_NULL(sandbox)), api_(sandbox_) {}
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absl::StatusOr<std::string> idn2_register_u8(const char* ulabel,
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const char* alabel);
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absl::StatusOr<std::string> idn2_lookup_u8(const char* data);
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absl::StatusOr<std::string> idn2_to_ascii_8z(const char* ulabel);
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absl::StatusOr<std::string> idn2_to_unicode_8z8z(const char* ulabel);
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private:
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absl::StatusOr<std::string> SapiGeneric(
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const char* data,
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absl::StatusOr<int> (IDN2Api::*cb)(sapi::v::Ptr* input,
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sapi::v::Ptr* output, int flags));
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absl::StatusOr<std::string> ProcessErrors(const absl::StatusOr<int>& status,
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sapi::v::GenericPtr& ptr);
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Idn2SapiSandbox* sandbox_;
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IDN2Api api_;
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};
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#endif // CONTRIB_LIBIDN2_LIBIDN2_SAPI_H_
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