lukaszraczylo/mcp-captcharesolver
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feat(stealth): make evasion script coherent with generated fingerprint

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- Convert assets/evasions.js to evasions.js.tmpl (Go text/template)
- Placeholders: WebGLVendor, WebGLRenderer, Platform, Languages
- Add navigator.platform spoof from fingerprint
- ScriptParams gains OS, Browser, Locale, Seed fields (fieldalignment ordered)
- ScriptResult gains Fingerprint field — returns the identity the script was rendered for
- StealthScript calls GenerateFingerprint and renders template; single call gives both script and coherent fingerprint
- languagesJS: locale to JS list (en-GB -> 'en-GB', 'en')
- Template parsed once at init via template.Must
- StealthScriptIn in tools.go gains OS, Browser, Locale, Seed pass-through
- Tests: added TestStealthScriptCoherence asserting rendered values match fingerprint
This commit is contained in:
lukaszraczylo
2026-06-07 14:29:13 +01:00
parent 5476aefb11
commit 22775d446e
4 changed files with 142 additions and 15 deletions
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internal/mcp/tools.go
+12 -2
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@@ -132,11 +132,21 @@ func (h *Handlers) solveRotation(ctx context.Context, _ *mcp.CallToolRequest, in
// ---- stealth tools ----
type StealthScriptIn struct {
Engine string `json:"engine,omitempty" jsonschema:"playwright | cdp | generic"`
Seed uint64 `json:"seed,omitempty" jsonschema:"use the same seed as generate_fingerprint to keep the injected script and applied profile consistent"`
OS string `json:"os,omitempty" jsonschema:"windows | macos | linux — use the same os/browser/locale/seed as generate_fingerprint, or read the returned fingerprint, to keep the injected script and applied profile consistent"`
Browser string `json:"browser,omitempty" jsonschema:"chrome"`
Locale string `json:"locale,omitempty" jsonschema:"BCP-47 locale e.g. en-US, en-GB — use the same locale as generate_fingerprint for a coherent profile"`
Engine string `json:"engine,omitempty" jsonschema:"playwright | cdp | generic"`
}
func (h *Handlers) stealthScript(_ context.Context, _ *mcp.CallToolRequest, in StealthScriptIn) (*mcp.CallToolResult, stealth.ScriptResult, error) {
return nil, stealth.StealthScript(stealth.ScriptParams{Engine: in.Engine}), nil
return nil, stealth.StealthScript(stealth.ScriptParams{
OS: in.OS,
Browser: in.Browser,
Locale: in.Locale,
Seed: in.Seed,
Engine: in.Engine,
}), nil
}
type FingerprintIn struct {