4725a1b080
Skip empty fingerprints in SystemPromptLeakGuardrail to prevent blank
values from flagging every message. Replace overly broad "sk-" pattern
in SensitiveDataGuardrail with specific LLM provider prefixes
("sk-proj-" for OpenAI, "sk-ant-" for Anthropic) to avoid false
positives on common words like "risk-based" or "task-management".
Signed-off-by: Bryan Frimin <bryan@getprobo.com>
59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice appear in all copies.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
|
|
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
|
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
|
|
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
// PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
package guardrail
|
|
|
|
import (
|
|
"context"
|
|
"strings"
|
|
|
|
"go.probo.inc/probo/pkg/agent"
|
|
"go.probo.inc/probo/pkg/llm"
|
|
)
|
|
|
|
type SystemPromptLeakGuardrail struct {
|
|
fingerprints []string
|
|
}
|
|
|
|
func NewSystemPromptLeakGuardrail(fingerprints []string) *SystemPromptLeakGuardrail {
|
|
lowered := make([]string, 0, len(fingerprints))
|
|
for _, f := range fingerprints {
|
|
if f == "" {
|
|
continue
|
|
}
|
|
lowered = append(lowered, strings.ToLower(f))
|
|
}
|
|
|
|
return &SystemPromptLeakGuardrail{fingerprints: lowered}
|
|
}
|
|
|
|
func (g *SystemPromptLeakGuardrail) Name() string {
|
|
return "system-prompt-leak"
|
|
}
|
|
|
|
func (g *SystemPromptLeakGuardrail) Check(_ context.Context, message llm.Message) (*agent.GuardrailResult, error) {
|
|
text := strings.ToLower(message.Text())
|
|
|
|
for _, fp := range g.fingerprints {
|
|
if strings.Contains(text, fp) {
|
|
return &agent.GuardrailResult{
|
|
Tripwire: true,
|
|
Message: "response contains system prompt content",
|
|
}, nil
|
|
}
|
|
}
|
|
|
|
return &agent.GuardrailResult{Tripwire: false}, nil
|
|
}
|