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7e83775e3a
Only apply repl.ReplaceAll() on values from literal variable names
(e.g. map outputs), not on values resolved from placeholder keys
(e.g. {http.request.header.*}). The placeholder path already resolves
the value via repl.Get(), so a second expansion allows user-controlled
input containing {env.*} or {file.*} to be evaluated, leaking
environment variables and file contents.
Add regression test to verify placeholder-sourced values are not
re-expanded.
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| .. | ||
| caddyevents | ||
| caddyfs | ||
| caddyhttp | ||
| caddypki | ||
| caddytls | ||
| filestorage | ||
| internal/network | ||
| logging | ||
| metrics | ||
| standard | ||