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Change Parse descriptor argument to string_view

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Commit b3bf18f0ba changed the function
signature from Parse(const std::string& descriptor,...) to
Parse(std::span<const char> descriptor,...).

Calling this new version of Parse with a string literal will trigger
a confusing "Invalid characters in payload" due to the trailing "\0".

Switch to string_view and add a test.

Co-authored-by: MarcoFalke <*~=`'#}+{/-|&$^_@721217.xyz>
This commit is contained in:
Sjors Provoost
2025-11-20 13:44:30 +01:00
parent 1af46cff94
commit c0bfe72f6e
3 changed files with 15 additions and 5 deletions
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9
src/script/descriptor.cpp
View File

@@ -2743,12 +2743,13 @@ bool CheckChecksum(std::span<const char>& sp, bool require_checksum, std::string
return true;
}
std::vector<std::unique_ptr<Descriptor>> Parse(std::span<const char> descriptor, FlatSigningProvider& out, std::string& error, bool require_checksum)
std::vector<std::unique_ptr<Descriptor>> Parse(std::string_view descriptor, FlatSigningProvider& out, std::string& error, bool require_checksum)
{
if (!CheckChecksum(descriptor, require_checksum, error)) return {};
std::span<const char> sp{descriptor};
if (!CheckChecksum(sp, require_checksum, error)) return {};
uint32_t key_exp_index = 0;
auto ret = ParseScript(key_exp_index, descriptor, ParseScriptContext::TOP, out, error);
if (descriptor.empty() && !ret.empty()) {
auto ret = ParseScript(key_exp_index, sp, ParseScriptContext::TOP, out, error);
if (sp.empty() && !ret.empty()) {
std::vector<std::unique_ptr<Descriptor>> descs;
descs.reserve(ret.size());
for (auto& r : ret) {

2
src/script/descriptor.h
View File

@@ -175,7 +175,7 @@ struct Descriptor {
* If a parse error occurs, or the checksum is missing/invalid, or anything
* else is wrong, an empty vector is returned.
*/
std::vector<std::unique_ptr<Descriptor>> Parse(std::span<const char> descriptor, FlatSigningProvider& out, std::string& error, bool require_checksum = false);
std::vector<std::unique_ptr<Descriptor>> Parse(std::string_view descriptor, FlatSigningProvider& out, std::string& error, bool require_checksum = false);
/** Get the checksum for a `descriptor`.
*

9
src/test/descriptor_tests.cpp
View File

@@ -1262,4 +1262,13 @@ BOOST_AUTO_TEST_CASE(descriptor_test)
CheckUnparsable("tr(musig(tuus(oldepk(gg)ggggfgg)<,z(((((((((((((((((((((st)", "tr(musig(tuus(oldepk(gg)ggggfgg)<,z(((((((((((((((((((((st)","tr(): Too many ')' in musig() expression");
}
BOOST_AUTO_TEST_CASE(descriptor_literal_null_byte)
{
// Trailing '\0' string literal should be ignored.
FlatSigningProvider keys;
std::string err;
auto descs = Parse("pk(0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798)", keys, err, /*require_checksum=*/false);
BOOST_REQUIRE_MESSAGE(!descs.empty(), err);
}
BOOST_AUTO_TEST_SUITE_END()