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feat: basic implementation for filter expressions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package formatter | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/expr-lang/expr" | ||
| ) | ||
|
|
||
| // filterExpr filters NMAPRun.Hosts by given expression | ||
| func filterExpr(r NMAPRun, code string) (NMAPRun, error) { | ||
| program, err := expr.Compile( | ||
| fmt.Sprintf("filter(Host, { %s })", code), | ||
| expr.Env(r), | ||
| ) | ||
|
|
||
| if err != nil { | ||
| return r, err | ||
| } | ||
|
|
||
| output, err := expr.Run(program, r) | ||
| if err != nil { | ||
| return r, err | ||
| } | ||
|
|
||
| hosts, err := convertToHosts(output) | ||
|
|
||
| if err != nil { | ||
| return r, err | ||
| } | ||
|
|
||
| r.Host = hosts | ||
| return r, nil | ||
| } | ||
|
|
||
| // convertToHosts converts output from expression engine to []Host | ||
| func convertToHosts(output interface{}) ([]Host, error) { | ||
| outputInterfaces, ok := output.([]interface{}) | ||
| if !ok { | ||
| return nil, fmt.Errorf("output is not []interface{}") | ||
| } | ||
|
|
||
| hosts := make([]Host, len(outputInterfaces)) | ||
| for i, v := range outputInterfaces { | ||
| host, ok := v.(Host) | ||
| if !ok { | ||
| return nil, fmt.Errorf("element is not Host") | ||
| } | ||
| hosts[i] = host | ||
| } | ||
|
|
||
| return hosts, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| package formatter | ||
|
|
||
| import ( | ||
| "reflect" | ||
| "testing" | ||
| ) | ||
|
|
||
| func Test_filterExpr(t *testing.T) { | ||
| type args struct { | ||
| nmapRUN NMAPRun | ||
| code string | ||
| } | ||
| tests := []struct { | ||
| name string | ||
| args args | ||
| want NMAPRun | ||
| wantErr bool | ||
| }{ | ||
| { | ||
| name: "Basic test", | ||
| args: args{ | ||
| nmapRUN: NMAPRun{ | ||
| Scanner: "", | ||
| Args: "", | ||
| Start: 0, | ||
| StartStr: "", | ||
| Version: "", | ||
| ScanInfo: ScanInfo{}, | ||
| Host: []Host{ | ||
| { | ||
| StartTime: 0, | ||
| EndTime: 0, | ||
| Port: []Port{ | ||
| { | ||
| Protocol: "http", | ||
| PortID: 80, | ||
| State: PortState{}, | ||
| Service: PortService{}, | ||
| Script: []Script{}, | ||
| }, | ||
| }, | ||
| HostAddress: []HostAddress{ | ||
| { | ||
| Address: "10.10.10.1", | ||
| AddressType: "ipv4", | ||
| Vendor: "", | ||
| }, | ||
| }, | ||
| HostNames: HostNames{}, | ||
| Status: HostStatus{ | ||
| State: "up", | ||
| Reason: "", | ||
| }, | ||
| OS: OS{}, | ||
| Trace: Trace{}, | ||
| Uptime: Uptime{}, | ||
| Distance: Distance{}, | ||
| TCPSequence: TCPSequence{}, | ||
| IPIDSequence: IPIDSequence{}, | ||
| TCPTSSequence: TCPTSSequence{}, | ||
| }, | ||
| { | ||
| StartTime: 0, | ||
| EndTime: 0, | ||
| Port: []Port{ | ||
| { | ||
| Protocol: "", | ||
| PortID: 22, | ||
| State: PortState{}, | ||
| Service: PortService{}, | ||
| Script: []Script{}, | ||
| }, | ||
| }, | ||
| HostAddress: []HostAddress{ | ||
| { | ||
| Address: "10.10.10.20", | ||
| AddressType: "ipv4", | ||
| Vendor: "", | ||
| }, | ||
| }, | ||
| HostNames: HostNames{}, | ||
| Status: HostStatus{}, | ||
| OS: OS{}, | ||
| Trace: Trace{}, | ||
| Uptime: Uptime{}, | ||
| Distance: Distance{}, | ||
| TCPSequence: TCPSequence{}, | ||
| IPIDSequence: IPIDSequence{}, | ||
| TCPTSSequence: TCPTSSequence{}, | ||
| }, | ||
| }, | ||
| Verbose: Verbose{}, | ||
| Debugging: Debugging{}, | ||
| RunStats: RunStats{}, | ||
| }, | ||
| code: `.Status.State == "up" && any(.Port, { .PortID in [80] })`, | ||
| }, | ||
| want: NMAPRun{ | ||
| Scanner: "", | ||
| Args: "", | ||
| Start: 0, | ||
| StartStr: "", | ||
| Version: "", | ||
| ScanInfo: ScanInfo{}, | ||
| Host: []Host{{StartTime: 0, EndTime: 0, Port: []Port{ | ||
| { | ||
| Protocol: "http", | ||
| PortID: 80, | ||
| State: PortState{}, | ||
| Service: PortService{}, | ||
| Script: []Script{}, | ||
| }, | ||
| }, HostAddress: []HostAddress{{Address: "10.10.10.1", AddressType: "ipv4", Vendor: ""}}, HostNames: HostNames{}, Status: HostStatus{State: "up", Reason: ""}, OS: OS{}, Trace: Trace{}, Uptime: Uptime{}, Distance: Distance{}, TCPSequence: TCPSequence{}, IPIDSequence: IPIDSequence{}, TCPTSSequence: TCPTSSequence{}}}, | ||
| Verbose: Verbose{}, | ||
| Debugging: Debugging{}, | ||
| RunStats: RunStats{}, | ||
| }, | ||
| wantErr: false, | ||
| }, | ||
| } | ||
| for _, tt := range tests { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| got, err := filterExpr(tt.args.nmapRUN, tt.args.code) | ||
| if (err != nil) != tt.wantErr { | ||
| t.Errorf("filterExpr() error = %v, wantErr %v", err, tt.wantErr) | ||
| return | ||
| } | ||
| if !reflect.DeepEqual(got, tt.want) { | ||
| t.Errorf("filterExpr() = %+v, want %+v", got, tt.want) | ||
| } | ||
| }) | ||
| } | ||
| } |
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