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fix(caddy): parse thread and request counts as int - #2722
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Caddy seems to currently generally swallow error messages on startup (probably already fixed here?)
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num_threads,max_threads,max_requests, the workernumandmax_threadsoptions, andphp-server --worker file,Nare parsed withstrconv.ParseUint(s, 10, 32)and then converted toint. On 32-bit platforms (we shiplinux/386,linux/arm/v6andlinux/arm/v7images), values between 2^31 and 2^32-1 wrap to negative numbers:max_threads 4294967295becomes-1, which meansauto.These values are now parsed with
strconv.Atoithrough aparseNonNegativeInthelper. Nothing gets converted, so nothing can wrap, and out-of-range input returns a range error on every platform. Negative values are still rejected explicitly, because the runtime treats them as sentinels (auto thread count, default worker count). 64-bit builds accept the same values as before.Reported by CodeQL (
go/incorrect-integer-conversion) while setting it up in #2720.