Add browser extension gRPC bridge

internal/browserbridge/client.go

@@ -0,0 +1,59 @@
+package browserbridge
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"strings"
+
+	keepassgov1 "git.julianfamily.org/keepassgo/proto/keepassgo/v1"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/metadata"
+)
+
+type GRPCClient struct {
+	client keepassgov1.VaultServiceClient
+}
+
+func Dial(ctx context.Context, conn Connection) (*grpc.ClientConn, *GRPCClient, context.Context, error) {
+	if strings.TrimSpace(conn.GRPCAddress) == "" {
+		conn.GRPCAddress = DefaultGRPCAddress
+	}
+	if strings.TrimSpace(conn.BearerToken) == "" {
+		return nil, nil, nil, fmt.Errorf("browser bridge bearer token is required")
+	}
+	address := strings.TrimSpace(conn.GRPCAddress)
+	grpcConn, err := grpc.NewClient("passthrough:///"+address,
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithContextDialer(func(context.Context, string) (net.Conn, error) {
+			return net.Dial("tcp", address)
+		}),
+	)
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("dial gRPC host %s: %w", address, err)
+	}
+	ctx = metadata.AppendToOutgoingContext(ctx, "authorization", "Bearer "+strings.TrimSpace(conn.BearerToken))
+	return grpcConn, &GRPCClient{client: keepassgov1.NewVaultServiceClient(grpcConn)}, ctx, nil
+}
+
+func (c *GRPCClient) Status(ctx context.Context) (*keepassgov1.GetSessionStatusResponse, error) {
+	return c.client.GetSessionStatus(ctx, &keepassgov1.GetSessionStatusRequest{})
+}
+
+func (c *GRPCClient) FindBrowserLogins(ctx context.Context, pageURL string) ([]*keepassgov1.BrowserLoginMatch, error) {
+	resp, err := c.client.FindBrowserLogins(ctx, &keepassgov1.FindBrowserLoginsRequest{
+		PageUrl: strings.TrimSpace(pageURL),
+	})
+	if err != nil {
+		return nil, err
+	}
+	return resp.GetMatches(), nil
+}
+
+func (c *GRPCClient) GetBrowserCredential(ctx context.Context, entryID, pageURL string) (*keepassgov1.GetBrowserCredentialResponse, error) {
+	return c.client.GetBrowserCredential(ctx, &keepassgov1.GetBrowserCredentialRequest{
+		Id:      strings.TrimSpace(entryID),
+		PageUrl: strings.TrimSpace(pageURL),
+	})
+}