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src/script/descriptor.cpp
| Show First 20 Lines • Show All 1,060 Lines • ▼ Show 20 Lines | if (ExtractDestination(script, dest)) { | ||||
| } | } | ||||
| } | } | ||||
| return std::make_unique<RawDescriptor>(script); | return std::make_unique<RawDescriptor>(script); | ||||
| } | } | ||||
| } // namespace | } // namespace | ||||
| std::unique_ptr<Descriptor> Parse(const std::string &descriptor, | /** | ||||
| FlatSigningProvider &out, | * Check a descriptor checksum, and update desc to be the checksum-less part. | ||||
| bool require_checksum) { | */ | ||||
| Span<const char> sp(descriptor.data(), descriptor.size()); | bool CheckChecksum(Span<const char> &sp, bool require_checksum, | ||||
| std::string *out_checksum = nullptr) { | |||||
| // Checksum checks | |||||
| auto check_split = Split(sp, '#'); | auto check_split = Split(sp, '#'); | ||||
| if (check_split.size() > 2) { | if (check_split.size() > 2) { | ||||
| // Multiple '#' symbols | // Multiple '#' symbols | ||||
| return nullptr; | return false; | ||||
| } | } | ||||
| if (check_split.size() == 1 && require_checksum) { | if (check_split.size() == 1 && require_checksum) { | ||||
| // Missing checksum | // Missing checksum | ||||
| return nullptr; | return false; | ||||
| } | } | ||||
| if (check_split.size() == 2) { | if (check_split.size() == 2) { | ||||
| if (check_split[1].size() != 8) { | if (check_split[1].size() != 8) { | ||||
| // Unexpected length for checksum | // Unexpected length for checksum | ||||
| return nullptr; | return false; | ||||
| } | |||||
| } | } | ||||
| auto checksum = DescriptorChecksum(check_split[0]); | auto checksum = DescriptorChecksum(check_split[0]); | ||||
| if (checksum.empty()) { | if (checksum.empty()) { | ||||
| // Invalid characters in payload | // Invalid characters in payload | ||||
| return nullptr; | return false; | ||||
| } | } | ||||
| if (check_split.size() == 2) { | |||||
| if (!std::equal(checksum.begin(), checksum.end(), | if (!std::equal(checksum.begin(), checksum.end(), | ||||
| check_split[1].begin())) { | check_split[1].begin())) { | ||||
| // Checksum mismatch | // Checksum mismatch | ||||
| return nullptr; | return false; | ||||
| } | |||||
| } | } | ||||
| if (out_checksum) { | |||||
| *out_checksum = std::move(checksum); | |||||
| } | } | ||||
| sp = check_split[0]; | sp = check_split[0]; | ||||
| return true; | |||||
| } | |||||
| std::unique_ptr<Descriptor> Parse(const std::string &descriptor, | |||||
| FlatSigningProvider &out, | |||||
| bool require_checksum) { | |||||
| Span<const char> sp(descriptor.data(), descriptor.size()); | |||||
| if (!CheckChecksum(sp, require_checksum)) { | |||||
| return nullptr; | |||||
| } | |||||
| auto ret = ParseScript(sp, ParseScriptContext::TOP, out); | auto ret = ParseScript(sp, ParseScriptContext::TOP, out); | ||||
| if (sp.size() == 0 && ret) { | if (sp.size() == 0 && ret) { | ||||
| return std::unique_ptr<Descriptor>(std::move(ret)); | return std::unique_ptr<Descriptor>(std::move(ret)); | ||||
| } | } | ||||
| return nullptr; | return nullptr; | ||||
| } | } | ||||
| std::unique_ptr<Descriptor> InferDescriptor(const CScript &script, | std::unique_ptr<Descriptor> InferDescriptor(const CScript &script, | ||||
| const SigningProvider &provider) { | const SigningProvider &provider) { | ||||
| return InferScript(script, ParseScriptContext::TOP, provider); | return InferScript(script, ParseScriptContext::TOP, provider); | ||||
| } | } | ||||