cloudflared-mirror/teamnet/api.go

110 lines
2.8 KiB
Go

package teamnet
import (
"encoding/json"
"fmt"
"net"
"time"
"github.com/google/uuid"
"github.com/pkg/errors"
)
// Route is a mapping from customer's IP space to a tunnel.
// Each route allows the customer to route eyeballs in their corporate network
// to certain private IP ranges. Each Route represents an IP range in their
// network, and says that eyeballs can reach that route using the corresponding
// tunnel.
type Route struct {
Network CIDR `json:"network"`
TunnelID uuid.UUID `json:"tunnel_id"`
Comment string `json:"comment"`
CreatedAt time.Time `json:"created_at"`
DeletedAt time.Time `json:"deleted_at"`
}
// CIDR is just a newtype wrapper around net.IPNet. It adds JSON unmarshalling.
type CIDR net.IPNet
func (c CIDR) String() string {
n := net.IPNet(c)
return n.String()
}
func (c CIDR) MarshalJSON() ([]byte, error) {
str := c.String()
json, err := json.Marshal(str)
if err != nil {
return nil, errors.Wrap(err, "error serializing CIDR into JSON")
}
return json, nil
}
// UnmarshalJSON parses a JSON string into net.IPNet
func (c *CIDR) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return errors.Wrap(err, "error parsing cidr string")
}
_, network, err := net.ParseCIDR(s)
if err != nil {
return errors.Wrap(err, "error parsing invalid network from backend")
}
if network == nil {
return fmt.Errorf("backend returned invalid network %s", s)
}
*c = CIDR(*network)
return nil
}
// NewRoute has all the parameters necessary to add a new route to the table.
type NewRoute struct {
Network net.IPNet
TunnelID uuid.UUID
Comment string
}
// MarshalJSON handles fields with non-JSON types (e.g. net.IPNet).
func (r NewRoute) MarshalJSON() ([]byte, error) {
return json.Marshal(&struct {
TunnelID uuid.UUID `json:"tunnel_id"`
Comment string `json:"comment"`
}{
TunnelID: r.TunnelID,
Comment: r.Comment,
})
}
// DetailedRoute is just a Route with some extra fields, e.g. TunnelName.
type DetailedRoute struct {
Network CIDR `json:"network"`
TunnelID uuid.UUID `json:"tunnel_id"`
Comment string `json:"comment"`
CreatedAt time.Time `json:"created_at"`
DeletedAt time.Time `json:"deleted_at"`
TunnelName string `json:"tunnel_name"`
}
// IsZero checks if DetailedRoute is the zero value.
func (r *DetailedRoute) IsZero() bool {
return r.TunnelID == uuid.Nil
}
// TableString outputs a table row summarizing the route, to be used
// when showing the user their routing table.
func (r DetailedRoute) TableString() string {
deletedColumn := "-"
if !r.DeletedAt.IsZero() {
deletedColumn = r.DeletedAt.Format(time.RFC3339)
}
return fmt.Sprintf(
"%s\t%s\t%s\t%s\t%s\t%s\t",
r.Network.String(),
r.Comment,
r.TunnelID,
r.TunnelName,
r.CreatedAt.Format(time.RFC3339),
deletedColumn,
)
}