cloudflare/cloudflared
Publicmirrored from https://github.com/cloudflare/cloudflaredAvailable
cfapi/ip_route_filter.go
165lines · modecode
| 1 | package cfapi |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "net" |
| 6 | "net/url" |
| 7 | "strconv" |
| 8 | "time" |
| 9 | |
| 10 | "github.com/google/uuid" |
| 11 | "github.com/pkg/errors" |
| 12 | "github.com/urfave/cli/v2" |
| 13 | ) |
| 14 | |
| 15 | var ( |
| 16 | filterIpRouteDeleted = cli.BoolFlag{ |
| 17 | Name: "filter-is-deleted", |
| 18 | Usage: "If false (default), only show non-deleted routes. If true, only show deleted routes.", |
| 19 | } |
| 20 | filterIpRouteTunnelID = cli.StringFlag{ |
| 21 | Name: "filter-tunnel-id", |
| 22 | Usage: "Show only routes with the given tunnel ID.", |
| 23 | } |
| 24 | filterSubsetIpRoute = cli.StringFlag{ |
| 25 | Name: "filter-network-is-subset-of", |
| 26 | Aliases: []string{"nsub"}, |
| 27 | Usage: "Show only routes whose network is a subset of the given network.", |
| 28 | } |
| 29 | filterSupersetIpRoute = cli.StringFlag{ |
| 30 | Name: "filter-network-is-superset-of", |
| 31 | Aliases: []string{"nsup"}, |
| 32 | Usage: "Show only routes whose network is a superset of the given network.", |
| 33 | } |
| 34 | filterIpRouteComment = cli.StringFlag{ |
| 35 | Name: "filter-comment-is", |
| 36 | Usage: "Show only routes with this comment.", |
| 37 | } |
| 38 | filterIpRouteByVnet = cli.StringFlag{ |
| 39 | Name: "filter-virtual-network-id", |
| 40 | Usage: "Show only routes that are attached to the given virtual network ID.", |
| 41 | } |
| 42 | |
| 43 | // Flags contains all filter flags. |
| 44 | IpRouteFilterFlags = []cli.Flag{ |
| 45 | &filterIpRouteDeleted, |
| 46 | &filterIpRouteTunnelID, |
| 47 | &filterSubsetIpRoute, |
| 48 | &filterSupersetIpRoute, |
| 49 | &filterIpRouteComment, |
| 50 | &filterIpRouteByVnet, |
| 51 | } |
| 52 | ) |
| 53 | |
| 54 | // IpRouteFilter which routes get queried. |
| 55 | type IpRouteFilter struct { |
| 56 | queryParams url.Values |
| 57 | } |
| 58 | |
| 59 | // NewIpRouteFilterFromCLI parses CLI flags to discover which filters should get applied. |
| 60 | func NewIpRouteFilterFromCLI(c *cli.Context) (*IpRouteFilter, error) { |
| 61 | f := &IpRouteFilter{ |
| 62 | queryParams: url.Values{}, |
| 63 | } |
| 64 | |
| 65 | // Set deletion filter |
| 66 | if flag := filterIpRouteDeleted.Name; c.IsSet(flag) && c.Bool(flag) { |
| 67 | f.deleted() |
| 68 | } else { |
| 69 | f.notDeleted() |
| 70 | } |
| 71 | |
| 72 | if subset, err := cidrFromFlag(c, filterSubsetIpRoute); err != nil { |
| 73 | return nil, err |
| 74 | } else if subset != nil { |
| 75 | f.networkIsSupersetOf(*subset) |
| 76 | } |
| 77 | |
| 78 | if superset, err := cidrFromFlag(c, filterSupersetIpRoute); err != nil { |
| 79 | return nil, err |
| 80 | } else if superset != nil { |
| 81 | f.networkIsSupersetOf(*superset) |
| 82 | } |
| 83 | |
| 84 | if comment := c.String(filterIpRouteComment.Name); comment != "" { |
| 85 | f.commentIs(comment) |
| 86 | } |
| 87 | |
| 88 | if tunnelID := c.String(filterIpRouteTunnelID.Name); tunnelID != "" { |
| 89 | u, err := uuid.Parse(tunnelID) |
| 90 | if err != nil { |
| 91 | return nil, errors.Wrapf(err, "Couldn't parse UUID from %s", filterIpRouteTunnelID.Name) |
| 92 | } |
| 93 | f.tunnelID(u) |
| 94 | } |
| 95 | |
| 96 | if vnetId := c.String(filterIpRouteByVnet.Name); vnetId != "" { |
| 97 | u, err := uuid.Parse(vnetId) |
| 98 | if err != nil { |
| 99 | return nil, errors.Wrapf(err, "Couldn't parse UUID from %s", filterIpRouteByVnet.Name) |
| 100 | } |
| 101 | f.vnetID(u) |
| 102 | } |
| 103 | |
| 104 | if maxFetch := c.Int("max-fetch-size"); maxFetch > 0 { |
| 105 | f.MaxFetchSize(uint(maxFetch)) |
| 106 | } |
| 107 | |
| 108 | return f, nil |
| 109 | } |
| 110 | |
| 111 | // Parses a CIDR from the flag. If the flag was unset, returns (nil, nil). |
| 112 | func cidrFromFlag(c *cli.Context, flag cli.StringFlag) (*net.IPNet, error) { |
| 113 | if !c.IsSet(flag.Name) { |
| 114 | return nil, nil |
| 115 | } |
| 116 | |
| 117 | _, subset, err := net.ParseCIDR(c.String(flag.Name)) |
| 118 | if err != nil { |
| 119 | return nil, err |
| 120 | } else if subset == nil { |
| 121 | return nil, fmt.Errorf("Invalid CIDR supplied for %s", flag.Name) |
| 122 | } |
| 123 | |
| 124 | return subset, nil |
| 125 | } |
| 126 | |
| 127 | func (f *IpRouteFilter) commentIs(comment string) { |
| 128 | f.queryParams.Set("comment", comment) |
| 129 | } |
| 130 | |
| 131 | func (f *IpRouteFilter) notDeleted() { |
| 132 | f.queryParams.Set("is_deleted", "false") |
| 133 | } |
| 134 | |
| 135 | func (f *IpRouteFilter) deleted() { |
| 136 | f.queryParams.Set("is_deleted", "true") |
| 137 | } |
| 138 | |
| 139 | func (f *IpRouteFilter) networkIsSubsetOf(superset net.IPNet) { |
| 140 | f.queryParams.Set("network_subset", superset.String()) |
| 141 | } |
| 142 | |
| 143 | func (f *IpRouteFilter) networkIsSupersetOf(subset net.IPNet) { |
| 144 | f.queryParams.Set("network_superset", subset.String()) |
| 145 | } |
| 146 | |
| 147 | func (f *IpRouteFilter) existedAt(existedAt time.Time) { |
| 148 | f.queryParams.Set("existed_at", existedAt.Format(time.RFC3339)) |
| 149 | } |
| 150 | |
| 151 | func (f *IpRouteFilter) tunnelID(id uuid.UUID) { |
| 152 | f.queryParams.Set("tunnel_id", id.String()) |
| 153 | } |
| 154 | |
| 155 | func (f *IpRouteFilter) vnetID(id uuid.UUID) { |
| 156 | f.queryParams.Set("virtual_network_id", id.String()) |
| 157 | } |
| 158 | |
| 159 | func (f *IpRouteFilter) MaxFetchSize(max uint) { |
| 160 | f.queryParams.Set("per_page", strconv.Itoa(int(max))) |
| 161 | } |
| 162 | |
| 163 | func (f IpRouteFilter) Encode() string { |
| 164 | return f.queryParams.Encode() |
| 165 | } |
| 166 | |