Browse Source
* Added matcher to determine what protocol the request is being made by - grpc, tls, http * Added ability to run caddyscript in a matcher to evaluate the http request * Added TLS field to caddyscript request time * Added a library to manipulate and compare a new caddyscript time type * Library for regex in starlarkmaster
dev
6 years ago
9 changed files with 341 additions and 12 deletions
@ -0,0 +1,72 @@ |
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package caddyscript |
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import ( |
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"fmt" |
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"net/http" |
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"go.starlark.net/starlark" |
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) |
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// HTTPRequest represents an http request type in caddyscript.
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type HTTPRequest struct{ Req *http.Request } |
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// AttrNames defines what properties and methods are available on the HTTPRequest type.
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func (r HTTPRequest) AttrNames() []string { |
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return []string{"header", "query", "url", "method", "host", "tls"} |
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} |
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func (r HTTPRequest) Freeze() {} |
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func (r HTTPRequest) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: HTTPRequest") } |
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func (r HTTPRequest) String() string { return fmt.Sprint(r.Req) } |
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func (r HTTPRequest) Type() string { return "HTTPRequest" } |
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func (r HTTPRequest) Truth() starlark.Bool { return true } |
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// Header handles returning a header key.
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func (r HTTPRequest) Header(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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var key string |
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err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &key) |
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if err != nil { |
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return starlark.None, fmt.Errorf("get request header: %v", err.Error()) |
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} |
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return starlark.String(r.Req.Header.Get(key)), nil |
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} |
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// Attr defines what happens when props or methods are called on the HTTPRequest type.
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func (r HTTPRequest) Attr(name string) (starlark.Value, error) { |
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switch name { |
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case "tls": |
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tls := new(starlark.Dict) |
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tls.SetKey(starlark.String("cipher_suite"), starlark.MakeUint(uint(r.Req.TLS.CipherSuite))) |
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tls.SetKey(starlark.String("did_resume"), starlark.Bool(r.Req.TLS.DidResume)) |
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tls.SetKey(starlark.String("handshake_complete"), starlark.Bool(r.Req.TLS.HandshakeComplete)) |
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tls.SetKey(starlark.String("negotiated_protocol"), starlark.String(r.Req.TLS.NegotiatedProtocol)) |
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tls.SetKey(starlark.String("negotiated_protocol_is_mutual"), starlark.Bool(r.Req.TLS.NegotiatedProtocolIsMutual)) |
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tls.SetKey(starlark.String("server_name"), starlark.String(r.Req.TLS.ServerName)) |
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tls.SetKey(starlark.String("version"), starlark.String(r.Req.TLS.Version)) |
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return tls, nil |
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case "header": |
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b := starlark.NewBuiltin("Header", r.Header) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "query": |
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qVals := r.Req.URL.Query() |
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query := starlark.NewDict(len(qVals)) |
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for k, v := range qVals { |
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query.SetKey(starlark.String(k), starlark.String(v[0])) |
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} |
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return query, nil |
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case "url": |
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return starlark.String(r.Req.URL.Path), nil |
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case "method": |
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return starlark.String(r.Req.Method), nil |
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case "host": |
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return starlark.String(r.Req.Host), nil |
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} |
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return nil, nil |
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} |
@ -0,0 +1,11 @@ |
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package caddyscript |
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import ( |
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"fmt" |
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"go.starlark.net/starlark" |
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) |
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func invalidReciever(v starlark.Value, want string) (starlark.Value, error) { |
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return starlark.None, fmt.Errorf("invalid receiver: receiver set to type %v, want %v", v.Type(), want) |
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} |
@ -0,0 +1,50 @@ |
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package caddyscript |
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import ( |
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"fmt" |
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"regexp" |
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"go.starlark.net/starlark" |
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) |
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// Regexp represents a regexp type for caddyscript.
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type Regexp struct{} |
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// AttrNames defines what properties and methods are available on the Time type.
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func (r Regexp) AttrNames() []string { |
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return []string{"match_string"} |
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} |
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// Attr defines what happens when props or methods are called on the Time type.
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func (r Regexp) Attr(name string) (starlark.Value, error) { |
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switch name { |
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case "match_string": |
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b := starlark.NewBuiltin("match_string", r.MatchString) |
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b = b.BindReceiver(r) |
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return b, nil |
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} |
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return nil, nil |
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} |
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// MatchString reports whether the string s contains any match of the regular expression pattern. More complicated queries need to use Compile and the full Regexp interface.
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func (r Regexp) MatchString(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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var pattern, match string |
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err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 2, &pattern, &match) |
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if err != nil { |
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return starlark.None, fmt.Errorf("could not unpack args: %v", err.Error()) |
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} |
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matched, err := regexp.MatchString(pattern, match) |
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if err != nil { |
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return starlark.False, fmt.Errorf("matchstring: %v", err.Error()) |
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} |
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return starlark.Bool(matched), nil |
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} |
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func (r Regexp) Freeze() {} |
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func (r Regexp) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: Regexp") } |
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func (r Regexp) String() string { return fmt.Sprint(r) } |
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func (r Regexp) Type() string { return "Regexp" } |
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func (r Regexp) Truth() starlark.Bool { return true } |
@ -0,0 +1,130 @@ |
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package caddyscript |
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import ( |
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"fmt" |
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ti "time" |
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"go.starlark.net/starlark" |
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) |
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// Time represents a time type for caddyscript.
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type Time struct { |
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value int64 // time since epoch in nanoseconds
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} |
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// AttrNames defines what properties and methods are available on the Time type.
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func (r Time) AttrNames() []string { |
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return []string{"now", "parse", "add", "subtract", "minute", "hour", "day", "value"} |
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} |
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// Attr defines what happens when props or methods are called on the Time type.
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func (r Time) Attr(name string) (starlark.Value, error) { |
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switch name { |
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case "now": |
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b := starlark.NewBuiltin("now", r.Now) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "parse_duration": |
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b := starlark.NewBuiltin("parse_duration", r.ParseDuration) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "add": |
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b := starlark.NewBuiltin("add", r.Add) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "subtract": |
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b := starlark.NewBuiltin("subtract", r.Subtract) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "minute": |
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b := starlark.NewBuiltin("minute", r.Minute) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "hour": |
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b := starlark.NewBuiltin("hour", r.Hour) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "day": |
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b := starlark.NewBuiltin("day", r.Day) |
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b = b.BindReceiver(r) |
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return b, nil |
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case "value": |
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return starlark.MakeInt64(r.value), nil |
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} |
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return nil, nil |
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} |
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func (r Time) Freeze() {} |
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func (r Time) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: Time") } |
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func (r Time) String() string { return fmt.Sprint(r.value) } |
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func (r Time) Type() string { return "Time" } |
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func (r Time) Truth() starlark.Bool { return true } |
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// Hour returns the current hour of a unix timestamp in range [0, 23].
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func (r Time) Hour(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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t := ti.Unix(0, r.value) |
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return starlark.MakeInt(t.Hour()), nil |
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} |
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// Minute returns the current minute of the hour for a unix timestamp in range [0, 59].
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func (r Time) Minute(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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t := ti.Unix(0, r.value) |
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return starlark.MakeInt(t.Minute()), nil |
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} |
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// Day returns the current day in a week of a unix timestamp... [Sunday = 0...]
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func (r Time) Day(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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t := ti.Unix(0, r.value) |
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return starlark.MakeInt(int(t.Weekday())), nil |
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} |
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// Now returns the current time as a unix timestamp.
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func (r Time) Now(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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val := ti.Now().UnixNano() |
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r.value = val |
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return r, nil |
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} |
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// ParseDuration parses a go duration string to a time type.
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func (r Time) ParseDuration(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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var dur string |
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err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &dur) |
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if err != nil { |
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return starlark.None, fmt.Errorf("could not unpack args: %v", err.Error()) |
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} |
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if parsed, err := ti.ParseDuration(dur); err == nil { |
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val := parsed.Nanoseconds() |
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r.value = val |
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return r, nil |
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} |
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return starlark.None, fmt.Errorf("time.parse_duration: argument cannot be parsed as a valid go time duration") |
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} |
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// Add adds time to a time type.
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func (r Time) Add(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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var t Time |
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err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &t) |
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if err != nil { |
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return starlark.None, fmt.Errorf("could not unpack args: %v", err.Error()) |
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} |
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val := r.value + t.value |
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r.value = val |
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return r, nil |
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} |
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// Subtract adds time to a time type.
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func (r Time) Subtract(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { |
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var t Time |
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err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &t) |
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if err != nil { |
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return starlark.None, fmt.Errorf("could not unpack args: %v", err.Error()) |
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} |
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val := r.value - t.value |
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r.value = val |
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return r, nil |
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} |
@ -0,0 +1,18 @@ |
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package caddyscript |
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import ( |
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"net/http" |
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caddyscript "bitbucket.org/lightcodelabs/caddy2/internal/caddyscript/lib" |
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"go.starlark.net/starlark" |
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) |
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// MatcherEnv sets up the global context for the matcher caddyscript environment.
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func MatcherEnv(r *http.Request) starlark.StringDict { |
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env := make(starlark.StringDict) |
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env["req"] = caddyscript.HTTPRequest{Req: r} |
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env["time"] = caddyscript.Time{} |
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env["regexp"] = caddyscript.Regexp{} |
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return env |
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} |
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