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patterns: Disallow application/octet-stream to be used as MIME type

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WerWolv
2023-01-09 08:38:19 +01:00
parent c1359a71d6
commit dbcb13f473
4 changed files with 23 additions and 5 deletions
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2
lib/libimhex/include/hex/helpers/magic.hpp
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@@ -21,4 +21,6 @@ namespace hex::magic {
std::string getMIMEType(const std::vector<u8> &data);
std::string getMIMEType(prv::Provider *provider, size_t size = 100_KiB);
bool isValidMIMEType(const std::string &mimeType);
}

14
lib/libimhex/source/helpers/magic.cpp
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@@ -96,4 +96,18 @@ namespace hex::magic {
return getMIMEType(buffer);
}
bool isValidMIMEType(const std::string &mimeType) {
// MIME types always contain a slash
if (!mimeType.contains("/"))
return false;
// The MIME type "application/octet-stream" is a fallback type for arbitrary binary data.
// Specifying this in a pattern would make it get suggested for every single unknown binary that's being loaded.
// We don't want that, so we ignore it here
if (mimeType == "application/octet-stream")
return false;
return true;
}
}