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Handle permission denied errors.

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This commit is contained in:
Robin E. R. Davies
2025-06-24 13:59:57 -04:00
parent 30938d967b
commit 98ee16bb82
10 changed files with 258 additions and 329 deletions
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src/FileMetadataFeature.cpp
+51 -44
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@@ -142,25 +142,27 @@ uint32_t FileMetadataFeature::getFileMetadata(
json_variant jsonData;
std::string result;
if (fs::exists(path))
try
{
try
if (fs::exists(path))
{
std::ifstream f(path);
json_reader reader(f);
reader.read(&jsonData);
result = jsonData.as_object()->at(std::string(key)).as_string();
}
catch (const std::exception &e)
else
{
Lv2Log::debug(SS("No metadata file found for " << absolute_path << " key: " << key));
return 0;
}
}
else
catch (const std::exception &e)
{
Lv2Log::debug(SS("No metadata file found for " << absolute_path << " key: " << key));
Lv2Log::debug(SS("Permission denied for " << absolute_path << " key: " << key));
return 0;
}
size_t len = result.length() + 1; // +1 for null terminator
if (len > fileMetadataSize || fileMetadata == nullptr)
{
@@ -168,7 +170,7 @@ uint32_t FileMetadataFeature::getFileMetadata(
return len;
}
memcpy(fileMetadata, result.c_str(), len);
Lv2Log::debug(SS("Get file metadata for " << absolute_path << " key: " << key << " value: " << result));
Lv2Log::debug(SS("Get file metadata for " << absolute_path << " key: " << key << " value: " << result));
return len;
}
PIPEDAL_FileMetadata_Status FileMetadataFeature::deleteFileMetadata(
@@ -181,52 +183,57 @@ PIPEDAL_FileMetadata_Status FileMetadataFeature::deleteFileMetadata(
}
Lv2Log::debug(SS("Delete file metadata for " << absolute_path << " key: " << key));
std::filesystem::path path{SS(absolute_path << ".mdata")};
try {
std::filesystem::path path{SS(absolute_path << ".mdata")};
if (!fs::exists(path))
{
return PIPEDAL_FILE_METADATA_NOT_FOUND; // Metadata file does not exist
}
if (!fs::exists(path))
{
return PIPEDAL_FILE_METADATA_NOT_FOUND; // Metadata file does not exist
}
json_variant jsonData;
try
{
std::ifstream f(path);
json_reader reader(f);
reader.read(&jsonData);
}
catch (const std::exception &e)
{
return PIPEDAL_FILE_METADATA_NOT_FOUND; // Failed to read existing metadata
}
json_variant jsonData;
try
{
std::ifstream f(path);
json_reader reader(f);
reader.read(&jsonData);
}
catch (const std::exception &e)
{
return PIPEDAL_FILE_METADATA_NOT_FOUND; // Failed to read existing metadata
}
auto obj = jsonData.as_object();
auto it = obj->find(std::string(key));
if (it == obj->end())
{
return PIPEDAL_FILE_METADATA_NOT_FOUND; // Key not found
}
auto obj = jsonData.as_object();
auto it = obj->find(std::string(key));
if (it == obj->end())
{
return PIPEDAL_FILE_METADATA_NOT_FOUND; // Key not found
}
obj->erase(it);
obj->erase(it);
if (obj->begin() == obj->end())
{
// If the object is empty, delete the metadata file
fs::remove(path);
return PIPEDAL_FILE_METADATA_SUCCESS; // Metadata deleted successfully
}
if (obj->begin() == obj->end())
{
// If the object is empty, delete the metadata file
fs::remove(path);
return PIPEDAL_FILE_METADATA_SUCCESS; // Metadata deleted successfully
}
std::ofstream f(path);
if (!f.is_open())
{
Lv2Log::error(SS("Failed to write metadata file " << path));
std::ofstream f(path);
if (!f.is_open())
{
Lv2Log::error(SS("Failed to write metadata file " << path));
return PIPEDAL_FILE_METADATA_PERMISSION_DENIED; // Failed to open existing metadata
}
json_writer writer(f);
writer.write(jsonData);
return PIPEDAL_FILE_METADATA_SUCCESS;
} catch (const std::exception &e) {
Lv2Log::error(SS("Exception while deleting metadata: " << e.what()));
return PIPEDAL_FILE_METADATA_PERMISSION_DENIED; // Failed to open existing metadata
}
json_writer writer(f);
writer.write(jsonData);
return PIPEDAL_FILE_METADATA_SUCCESS;
}
PIPEDAL_FileMetadata_Status FileMetadataFeature::S_setFileMetadata(