CRepository::ResolveResult CRepository::ResolvePathAndHash(const AddonPtr& addon) const
{
std::string const& path = addon->Path();
auto dirIt = std::find_if(m_dirs.begin(), m_dirs.end(), [&path](DirInfo const& dir)
{
return URIUtils::PathHasParent(path, dir.datadir, true);
});
if (dirIt == m_dirs.end())
{
CLog::Log(LOGERROR, "Requested path {} not found in known repository directories", path);
return {};
}
if (dirIt->hashType == CDigest::Type::INVALID)
{
// We have a path, but need no hash
return {path, {}};
}
// Do not follow mirror redirect, we want the headers of the redirect response
CURL url{path};
url.SetProtocolOption("redirect-limit", "0");
CCurlFile file;
if (!file.Open(url))
{
CLog::Log(LOGERROR, "Could not fetch addon location and hash from {}", path);
return {};
}
std::string hashTypeStr = CDigest::TypeToString(dirIt->hashType);
// Return the location from the header so we don't have to look it up again
// (saves one request per addon install)
std::string location = file.GetRedirectURL();
// content-* headers are base64, convert to base16
TypedDigest hash{dirIt->hashType, StringUtils::ToHexadecimal(Base64::Decode(file.GetHttpHeader().GetValue(std::string("content-") + hashTypeStr)))};
if (hash.Empty())
{
// Expected hash, but none found -> fall back to old method
if (!FetchChecksum(path + "." + hashTypeStr, hash.value) || hash.Empty())
{
CLog::Log(LOGERROR, "Failed to find hash for {} from HTTP header and in separate file", path);
return {};
}
}
if (location.empty())
{
// Fall back to original URL if we do not get a redirect
location = path;
}
CLog::Log(LOGDEBUG, "Resolved addon path {} to {} hash {}", path, location, hash.value);
return {location, hash};
}
