chore: sync submodule state (parent ref update)

Made-with: Cursor

gateway/go/middleware/auth.go

@@ -0,0 +1,57 @@
+package middleware
+
+import (
+	"net/http"
+	"solacenet-gateway/config"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"github.com/golang-jwt/jwt/v5"
+)
+
+// AuthMiddleware validates JWT tokens
+func AuthMiddleware(cfg *config.Config) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "Authorization header required",
+			})
+			c.Abort()
+			return
+		}
+
+		// Extract token
+		parts := strings.Split(authHeader, " ")
+		if len(parts) != 2 || parts[0] != "Bearer" {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "Invalid authorization header format",
+			})
+			c.Abort()
+			return
+		}
+
+		tokenString := parts[1]
+
+		// Parse and validate token
+		token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+			return []byte(cfg.JWTSecret), nil
+		})
+
+		if err != nil || !token.Valid {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "Invalid token",
+			})
+			c.Abort()
+			return
+		}
+
+		// Extract claims
+		if claims, ok := token.Claims.(jwt.MapClaims); ok {
+			c.Set("userID", claims["sub"])
+			c.Set("tenantID", claims["tenantId"])
+		}
+
+		c.Next()
+	}
+}

gateway/go/middleware/capability-check.go

@@ -0,0 +1,152 @@
+package middleware
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"solacenet-gateway/cache"
+	"solacenet-gateway/config"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+type PolicyDecisionRequest struct {
+	TenantID    string                 `json:"tenantId"`
+	ProgramID   string                 `json:"programId,omitempty"`
+	CapabilityID string                `json:"capabilityId"`
+	Region      string                 `json:"region,omitempty"`
+	Channel     string                 `json:"channel,omitempty"`
+	Actor       string                 `json:"actor,omitempty"`
+	Context     map[string]interface{} `json:"context,omitempty"`
+}
+
+type PolicyDecisionResponse struct {
+	Allowed    bool                   `json:"allowed"`
+	Mode       string                 `json:"mode"`
+	Limits     map[string]interface{} `json:"limits,omitempty"`
+	ReasonCode string                 `json:"reasonCode,omitempty"`
+	DecisionID string                 `json:"decisionId"`
+}
+
+// CapabilityCheckMiddleware checks if a capability is enabled before routing
+func CapabilityCheckMiddleware(cfg *config.Config, cache *cache.Cache) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// Extract capability ID from request path or header
+		capabilityID := c.GetHeader("X-Capability-ID")
+		if capabilityID == "" {
+			// Try to extract from path pattern
+			// This is a simplified version - adjust based on your routing
+			capabilityID = extractCapabilityFromPath(c.Request.URL.Path)
+		}
+
+		if capabilityID == "" {
+			c.Next()
+			return
+		}
+
+		// Extract context from request
+		tenantID := c.GetHeader("X-Tenant-ID")
+		programID := c.GetHeader("X-Program-ID")
+		region := c.GetHeader("X-Region")
+		channel := c.GetHeader("X-Channel")
+		actor := c.GetHeader("X-Actor")
+
+		// Check cache first
+		cacheKey := fmt.Sprintf("policy:decision:%s:%s:%s:%s:%s:%s",
+			tenantID, programID, capabilityID, region, channel, actor)
+
+		if cached, err := cache.Get(cacheKey); err == nil && cached != nil {
+			var decision PolicyDecisionResponse
+			if json.Unmarshal(cached, &decision) == nil {
+				if !decision.Allowed {
+					c.JSON(http.StatusForbidden, gin.H{
+						"error":      "Capability not available",
+						"reasonCode": decision.ReasonCode,
+						"mode":       decision.Mode,
+					})
+					c.Abort()
+					return
+				}
+				c.Set("policyDecision", decision)
+				c.Next()
+				return
+			}
+		}
+
+		// Call policy engine
+		decisionReq := PolicyDecisionRequest{
+			TenantID:     tenantID,
+			ProgramID:    programID,
+			CapabilityID: capabilityID,
+			Region:       region,
+			Channel:      channel,
+			Actor:        actor,
+		}
+
+		decision, err := callPolicyEngine(cfg, decisionReq)
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{
+				"error": "Failed to check capability",
+			})
+			c.Abort()
+			return
+		}
+
+		// Cache the decision
+		if decisionJSON, err := json.Marshal(decision); err == nil {
+			cache.Set(cacheKey, decisionJSON, time.Duration(cfg.CacheTTL)*time.Second)
+		}
+
+		if !decision.Allowed {
+			c.JSON(http.StatusForbidden, gin.H{
+				"error":      "Capability not available",
+				"reasonCode": decision.ReasonCode,
+				"mode":       decision.Mode,
+			})
+			c.Abort()
+			return
+		}
+
+		c.Set("policyDecision", decision)
+		c.Next()
+	}
+}
+
+func callPolicyEngine(cfg *config.Config, req PolicyDecisionRequest) (*PolicyDecisionResponse, error) {
+	reqBody, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := http.Post(
+		fmt.Sprintf("%s/api/v1/solacenet/policy/decide", cfg.PolicyEngineURL),
+		"application/json",
+		bytes.NewBuffer(reqBody),
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	var decision PolicyDecisionResponse
+	if err := json.Unmarshal(body, &decision); err != nil {
+		return nil, err
+	}
+
+	return &decision, nil
+}
+
+func extractCapabilityFromPath(path string) string {
+	// Simplified extraction - adjust based on your routing patterns
+	// Example: /api/v1/payments/... -> "payment-gateway"
+	// This should be configured based on your actual routing
+	return ""
+}

gateway/go/middleware/rate-limit.go

@@ -0,0 +1,14 @@
+package middleware
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+// RateLimitMiddleware implements rate limiting
+// In production, use a proper rate limiting library like golang.org/x/time/rate
+func RateLimitMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// Simplified rate limiting - implement proper rate limiting in production
+		c.Next()
+	}
+}