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Signed-off-by: David Papp <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| package promptguard | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "crypto/sha256" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "github.com/google/uuid" | ||
| "log" | ||
| "net/http" | ||
|
|
||
| "github.com/go-chi/chi/v5" | ||
| "github.com/openshieldai/openshield/lib" | ||
| ) | ||
|
|
||
| type AnalyzeRequest struct { | ||
| Text string `json:"text"` | ||
| Threshold float64 `json:"threshold"` | ||
| } | ||
|
|
||
| type AnalyzeResponse struct { | ||
| Score float64 `json:"score"` | ||
| Details struct { | ||
| BenignProbability float64 `json:"benign_probability"` | ||
| InjectionProbability float64 `json:"injection_probability"` | ||
| JailbreakProbability float64 `json:"jailbreak_probability"` | ||
| } `json:"details"` | ||
| } | ||
|
|
||
| func SetupRoutes(r chi.Router) { | ||
| r.Post("/promptguard/analyze", lib.AuthOpenShieldMiddleware(AnalyzeHandler)) | ||
| } | ||
|
|
||
| func AnalyzeHandler(w http.ResponseWriter, r *http.Request) { | ||
| var req AnalyzeRequest | ||
| if err := json.NewDecoder(r.Body).Decode(&req); err != nil { | ||
| lib.ErrorResponse(w, fmt.Errorf("error reading request body: %v", err)) | ||
| return | ||
| } | ||
|
|
||
| if req.Text == "" { | ||
| lib.ErrorResponse(w, fmt.Errorf("text field is required")) | ||
| return | ||
| } | ||
|
|
||
| performAuditLogging(r, "promptguard_analyze", "input", []byte(req.Text)) | ||
|
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| resp, err := callPromptGuardService(r.Context(), req) | ||
| if err != nil { | ||
| lib.ErrorResponse(w, fmt.Errorf("error calling PromptGuard service: %v", err)) | ||
| return | ||
| } | ||
|
|
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| respBytes, _ := json.Marshal(resp) | ||
| performAuditLogging(r, "promptguard_analyze", "output", respBytes) | ||
|
|
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| json.NewEncoder(w).Encode(resp) | ||
| } | ||
|
|
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| func callPromptGuardService(ctx context.Context, req AnalyzeRequest) (*AnalyzeResponse, error) { | ||
| config := lib.GetConfig() | ||
| promptGuardURL := config.Services.PromptGuard.BaseUrl + "/analyze" | ||
|
|
||
| reqBody, err := json.Marshal(req) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error marshaling request: %v", err) | ||
| } | ||
|
|
||
| httpReq, err := http.NewRequestWithContext(ctx, "POST", promptGuardURL, bytes.NewBuffer(reqBody)) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error creating request: %v", err) | ||
| } | ||
|
|
||
| httpReq.Header.Set("Content-Type", "application/json") | ||
|
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| client := &http.Client{} | ||
| resp, err := client.Do(httpReq) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error making request: %v", err) | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| if resp.StatusCode != http.StatusOK { | ||
| return nil, fmt.Errorf("service returned status %d", resp.StatusCode) | ||
| } | ||
|
|
||
| var result AnalyzeResponse | ||
| if err := json.NewDecoder(resp.Body).Decode(&result); err != nil { | ||
| return nil, fmt.Errorf("error decoding response: %v", err) | ||
| } | ||
|
|
||
| return &result, nil | ||
| } | ||
|
|
||
| func performAuditLogging(r *http.Request, logType string, messageType string, body []byte) { | ||
| apiKeyId := r.Context().Value("apiKeyId").(uuid.UUID) | ||
|
|
||
| productID, err := getProductIDFromAPIKey(apiKeyId) | ||
| if err != nil { | ||
| hashedApiKeyId := sha256.Sum256([]byte(apiKeyId.String())) | ||
| log.Printf("Failed to retrieve ProductID for apiKeyId %x: %v", hashedApiKeyId, err) | ||
| return | ||
| } | ||
|
|
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| lib.AuditLogs(string(body), logType, apiKeyId, messageType, productID, r) | ||
| } | ||
|
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| func getProductIDFromAPIKey(apiKeyId uuid.UUID) (uuid.UUID, error) { | ||
| var productIDStr string | ||
| err := lib.DB().Table("api_keys").Where("id = ?", apiKeyId).Pluck("product_id", &productIDStr).Error | ||
| if err != nil { | ||
| return uuid.Nil, err | ||
| } | ||
|
|
||
| productID, err := uuid.Parse(productIDStr) | ||
| if err != nil { | ||
| return uuid.Nil, errors.New("failed to parse product_id as UUID") | ||
| } | ||
|
|
||
| return productID, nil | ||
| } |
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