Refactor Caddyfile adapter and module registration

Use piles from which to draw config values.

Module values can return their name, so now we can do two-way mapping
from value to name and name to value; whereas before we could only map
name to value. This was problematic with the Caddyfile adapter since
it receives values and needs to know the name to put in the config.

admin.go

@@ -95,9 +95,9 @@ func StartAdmin(initialConfigJSON []byte) error {
 	mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
 	///// END PPROF STUFF //////
 
-	for _, m := range GetModules("admin") {
-		routes := m.New().([]AdminRoute)
-		for _, route := range routes {
+	for _, m := range GetModules("admin.routers") {
+		adminrtr := m.New().(AdminRouter)
+		for _, route := range adminrtr.Routes() {
 			mux.Handle(route.Pattern, route)
 		}
 	}
@@ -146,6 +146,11 @@ func StopAdmin() error {
 	return nil
 }
 
+// AdminRouter is a type which can return routes for the admin API.
+type AdminRouter interface {
+	Routes() []AdminRoute
+}
+
 // AdminRoute represents a route for the admin endpoint.
 type AdminRoute struct {
 	http.Handler

caddyconfig/caddyfile/adapter.go

@@ -37,14 +37,12 @@ func (a Adapter) Adapt(body []byte, options map[string]string) ([]byte, []caddyc
 		options = make(map[string]string)
 	}
 
-	directives := a.ServerType.ValidDirectives()
-
 	filename := options["filename"]
 	if filename == "" {
 		filename = "Caddyfile"
 	}
 
-	serverBlocks, err := Parse(filename, bytes.NewReader(body), directives)
+	serverBlocks, err := Parse(filename, bytes.NewReader(body))
 	if err != nil {
 		return nil, nil, err
 	}
@@ -77,10 +75,6 @@ type Unmarshaler interface {
 
 // ServerType is a type that can evaluate a Caddyfile and set up a caddy config.
 type ServerType interface {
-	// ValidDirectives returns a list of the
-	// server type's recognized directives.
-	ValidDirectives() []string
-
 	// Setup takes the server blocks which
 	// contain tokens, as well as options
 	// (e.g. CLI flags) and creates a Caddy

caddyconfig/caddyfile/dispenser.go

@@ -31,6 +31,7 @@ type Dispenser struct {
 }
 
 // NewDispenser returns a Dispenser filled with the given tokens.
+// TODO: Get rid of the filename argument; it seems pointless here
 func NewDispenser(filename string, tokens []Token) *Dispenser {
 	return &Dispenser{
 		filename: filename,
@@ -51,15 +52,15 @@ func (d *Dispenser) Next() bool {
 }
 
 // Prev moves to the previous token. It does the inverse
-// of Next(). Generally, this should only be used in
-// special cases such as deleting a token from the slice
-// that d is iterating. In that case, without using Prev(),
-// the dispenser would be pointing at the wrong token since
-// deleting a token implicitly advances the cursor.
+// of Next(), except this function may decrement the cursor
+// to -1 so that the next call to Next() points to the
+// first token; this allows dispensing to "start over". This
+// method returns true if the cursor ends up pointing to a
+// valid token.
 func (d *Dispenser) Prev() bool {
-	if d.cursor > 0 {
+	if d.cursor > -1 {
 		d.cursor--
-		return true
+		return d.cursor > -1
 	}
 	return false
 }
@@ -223,8 +224,7 @@ func (d *Dispenser) RemainingArgs() []string {
 // "directive" whether that be to the end of the line or
 // the end of a block that starts at the end of the line.
 func (d *Dispenser) NewFromNextTokens() *Dispenser {
-	var tkns []Token
-	tkns = append(tkns, d.Token())
+	tkns := []Token{d.Token()}
 	for d.NextArg() {
 		tkns = append(tkns, d.Token())
 	}
@@ -245,10 +245,14 @@ func (d *Dispenser) NewFromNextTokens() *Dispenser {
 
 // Token returns the current token.
 func (d *Dispenser) Token() Token {
-	if d.cursor < 0 || d.cursor >= len(d.tokens) {
+	return d.TokenAt(d.cursor)
+}
+
+func (d *Dispenser) TokenAt(cursor int) Token {
+	if cursor < 0 || cursor >= len(d.tokens) {
 		return Token{}
 	}
-	return d.tokens[d.cursor]
+	return d.tokens[cursor]
 }
 
 // Cursor returns the current cursor (token index).
@@ -256,6 +260,10 @@ func (d *Dispenser) Cursor() int {
 	return d.cursor
 }
 
+func (d *Dispenser) Reset() {
+	d.cursor = -1
+}
+
 // ArgErr returns an argument error, meaning that another
 // argument was expected but not found. In other words,
 // a line break or open curly brace was encountered instead of

caddyconfig/caddyfile/parse.go

@@ -28,12 +28,12 @@ import (
 // Directives that do not appear in validDirectives will cause
 // an error. If you do not want to check for valid directives,
 // pass in nil instead.
-func Parse(filename string, input io.Reader, validDirectives []string) ([]ServerBlock, error) {
+func Parse(filename string, input io.Reader) ([]ServerBlock, error) {
 	tokens, err := allTokens(input)
 	if err != nil {
 		return nil, err
 	}
-	p := parser{Dispenser: NewDispenser(filename, tokens), validDirectives: validDirectives}
+	p := parser{Dispenser: NewDispenser(filename, tokens)}
 	return p.parseAll()
 }
 
@@ -56,9 +56,9 @@ func allTokens(input io.Reader) ([]Token, error) {
 type parser struct {
 	*Dispenser
 	block           ServerBlock // current server block being parsed
-	validDirectives []string    // a directive must be valid or it's an error
 	eof             bool        // if we encounter a valid EOF in a hard place
 	definedSnippets map[string][]Token
+	nesting         int
 }
 
 func (p *parser) parseAll() ([]ServerBlock, error) {
@@ -72,14 +72,16 @@ func (p *parser) parseAll() ([]ServerBlock, error) {
 		if len(p.block.Keys) > 0 {
 			blocks = append(blocks, p.block)
 		}
+		if p.nesting > 0 {
+			return blocks, p.EOFErr()
+		}
 	}
 
 	return blocks, nil
 }
 
 func (p *parser) parseOne() error {
-	p.block = ServerBlock{Tokens: make(map[string][]Token)}
-
+	p.block = ServerBlock{}
 	return p.begin()
 }
 
@@ -186,7 +188,7 @@ func (p *parser) blockContents() error {
 		return err
 	}
 
-	// Only look for close curly brace if there was an opening
+	// only look for close curly brace if there was an opening
 	if errOpenCurlyBrace == nil {
 		err = p.closeCurlyBrace()
 		if err != nil {
@@ -205,6 +207,7 @@ func (p *parser) directives() error {
 	for p.Next() {
 		// end of server block
 		if p.Val() == "}" {
+			// p.nesting has already been decremented
 			break
 		}
 
@@ -218,11 +221,15 @@ func (p *parser) directives() error {
 			continue
 		}
 
-		// normal case: parse a directive on this line
+		// normal case: parse a directive as a new segment
+		// (a "segment" is a line which starts with a directive
+		// and which ends at the end of the line or at the end of
+		// the block that is opened at the end of the line)
 		if err := p.directive(); err != nil {
 			return err
 		}
 	}
+
 	return nil
 }
 
@@ -345,25 +352,24 @@ func (p *parser) doSingleImport(importFile string) ([]Token, error) {
 // are loaded into the current server block for later use
 // by directive setup functions.
 func (p *parser) directive() error {
-	dir := replaceEnvVars(p.Val())
-	nesting := 0
+	// evaluate any env vars in directive token
+	p.tokens[p.cursor].Text = replaceEnvVars(p.tokens[p.cursor].Text)
 
-	if !p.validDirective(dir) {
-		return p.Errf("Unknown directive '%s'", dir)
-	}
+	// a segment is a list of tokens associated with this directive
+	var segment Segment
 
-	// The directive itself is appended as a relevant token
-	p.block.Tokens[dir] = append(p.block.Tokens[dir], p.tokens[p.cursor])
+	// the directive itself is appended as a relevant token
+	segment = append(segment, p.Token())
 
 	for p.Next() {
 		if p.Val() == "{" {
-			nesting++
-		} else if p.isNewLine() && nesting == 0 {
+			p.nesting++
+		} else if p.isNewLine() && p.nesting == 0 {
 			p.cursor-- // read too far
 			break
-		} else if p.Val() == "}" && nesting > 0 {
-			nesting--
-		} else if p.Val() == "}" && nesting == 0 {
+		} else if p.Val() == "}" && p.nesting > 0 {
+			p.nesting--
+		} else if p.Val() == "}" && p.nesting == 0 {
 			return p.Err("Unexpected '}' because no matching opening brace")
 		} else if p.Val() == "import" && p.isNewLine() {
 			if err := p.doImport(); err != nil {
@@ -373,12 +379,15 @@ func (p *parser) directive() error {
 			continue
 		}
 		p.tokens[p.cursor].Text = replaceEnvVars(p.tokens[p.cursor].Text)
-		p.block.Tokens[dir] = append(p.block.Tokens[dir], p.tokens[p.cursor])
+		segment = append(segment, p.Token())
 	}
 
-	if nesting > 0 {
+	p.block.Segments = append(p.block.Segments, segment)
+
+	if p.nesting > 0 {
 		return p.EOFErr()
 	}
+
 	return nil
 }
 
@@ -404,19 +413,6 @@ func (p *parser) closeCurlyBrace() error {
 	return nil
 }
 
-// validDirective returns true if dir is in p.validDirectives.
-func (p *parser) validDirective(dir string) bool {
-	if p.validDirectives == nil {
-		return true
-	}
-	for _, d := range p.validDirectives {
-		if d == dir {
-			return true
-		}
-	}
-	return false
-}
-
 // replaceEnvVars replaces environment variables that appear in the token
 // and understands both the $UNIX and %WINDOWS% syntaxes.
 func replaceEnvVars(s string) string {
@@ -447,13 +443,6 @@ func replaceEnvReferences(s, refStart, refEnd string) string {
 	return s
 }
 
-// ServerBlock associates any number of keys (usually addresses
-// of some sort) with tokens (grouped by directive name).
-type ServerBlock struct {
-	Keys   []string
-	Tokens map[string][]Token
-}
-
 func (p *parser) isSnippet() (bool, string) {
 	keys := p.block.Keys
 	// A snippet block is a single key with parens. Nothing else qualifies.
@@ -480,6 +469,7 @@ func (p *parser) snippetTokens() ([]Token, error) {
 			}
 		}
 		if p.Val() == "{" {
+			p.nesting++
 			count++
 		}
 		tokens = append(tokens, p.tokens[p.cursor])
@@ -490,3 +480,43 @@ func (p *parser) snippetTokens() ([]Token, error) {
 	}
 	return tokens, nil
 }
+
+// ServerBlock associates any number of keys from the
+// head of the server block with tokens, which are
+// grouped by segments.
+type ServerBlock struct {
+	Keys     []string
+	Segments []Segment
+}
+
+// DispenseDirective returns a dispenser that contains
+// all the tokens in the server block.
+func (sb ServerBlock) DispenseDirective(dir string) *Dispenser {
+	var tokens []Token
+	for _, seg := range sb.Segments {
+		if len(seg) > 0 && seg[0].Text == dir {
+			tokens = append(tokens, seg...)
+		}
+	}
+	return NewDispenser("", tokens)
+}
+
+// Segment is a list of tokens which begins with a directive
+// and ends at the end of the directive (either at the end of
+// the line, or at the end of a block it opens).
+type Segment []Token
+
+// Directive returns the directive name for the segment.
+// The directive name is the text of the first token.
+func (s Segment) Directive() string {
+	if len(s) > 0 {
+		return s[0].Text
+	}
+	return ""
+}
+
+// NewDispenser returns a dispenser for this
+// segment's tokens.
+func (s Segment) NewDispenser() *Dispenser {
+	return NewDispenser("", s)
+}

caddyconfig/caddyfile/parse_test.go

@@ -22,6 +22,8 @@ import (
 	"testing"
 )
 
+// TODO: re-enable all tests
+
 func TestAllTokens(t *testing.T) {
 	input := strings.NewReader("a b c\nd e")
 	expected := []string{"a", "b", "c", "d", "e"}
@@ -53,84 +55,67 @@ func TestParseOneAndImport(t *testing.T) {
 		input     string
 		shouldErr bool
 		keys      []string
-		tokens    map[string]int // map of directive name to number of tokens expected
+		numTokens []int // number of tokens to expect in each segment
 	}{
 		{`localhost`, false, []string{
 			"localhost",
-		}, map[string]int{}},
+		}, []int{}},
 
 		{`localhost
 		  dir1`, false, []string{
 			"localhost",
-		}, map[string]int{
-			"dir1": 1,
-		}},
+		}, []int{1}},
 
 		{`localhost:1234
 		  dir1 foo bar`, false, []string{
 			"localhost:1234",
-		}, map[string]int{
-			"dir1": 3,
-		}},
+		}, []int{3},
+		},
 
 		{`localhost {
 		    dir1
 		  }`, false, []string{
 			"localhost",
-		}, map[string]int{
-			"dir1": 1,
-		}},
+		}, []int{1}},
 
 		{`localhost:1234 {
 		    dir1 foo bar
 		    dir2
 		  }`, false, []string{
 			"localhost:1234",
-		}, map[string]int{
-			"dir1": 3,
-			"dir2": 1,
-		}},
+		}, []int{3, 1}},
 
 		{`http://localhost https://localhost
 		  dir1 foo bar`, false, []string{
 			"http://localhost",
 			"https://localhost",
-		}, map[string]int{
-			"dir1": 3,
-		}},
+		}, []int{3}},
 
 		{`http://localhost https://localhost {
 		    dir1 foo bar
 		  }`, false, []string{
 			"http://localhost",
 			"https://localhost",
-		}, map[string]int{
-			"dir1": 3,
-		}},
+		}, []int{3}},
 
 		{`http://localhost, https://localhost {
 		    dir1 foo bar
 		  }`, false, []string{
 			"http://localhost",
 			"https://localhost",
-		}, map[string]int{
-			"dir1": 3,
-		}},
+		}, []int{3}},
 
 		{`http://localhost, {
 		  }`, true, []string{
 			"http://localhost",
-		}, map[string]int{}},
+		}, []int{}},
 
 		{`host1:80, http://host2.com
 		  dir1 foo bar
 		  dir2 baz`, false, []string{
 			"host1:80",
 			"http://host2.com",
-		}, map[string]int{
-			"dir1": 3,
-			"dir2": 2,
-		}},
+		}, []int{3, 2}},
 
 		{`http://host1.com,
 		  http://host2.com,
@@ -138,7 +123,7 @@ func TestParseOneAndImport(t *testing.T) {
 			"http://host1.com",
 			"http://host2.com",
 			"https://host3.com",
-		}, map[string]int{}},
+		}, []int{}},
 
 		{`http://host1.com:1234, https://host2.com
 		  dir1 foo {
@@ -147,10 +132,7 @@ func TestParseOneAndImport(t *testing.T) {
 		  dir2`, false, []string{
 			"http://host1.com:1234",
 			"https://host2.com",
-		}, map[string]int{
-			"dir1": 6,
-			"dir2": 1,
-		}},
+		}, []int{6, 1}},
 
 		{`127.0.0.1
 		  dir1 {
@@ -160,34 +142,25 @@ func TestParseOneAndImport(t *testing.T) {
 		    foo bar
 		  }`, false, []string{
 			"127.0.0.1",
-		}, map[string]int{
-			"dir1": 5,
-			"dir2": 5,
-		}},
+		}, []int{5, 5}},
 
 		{`localhost
 		  dir1 {
 		    foo`, true, []string{
 			"localhost",
-		}, map[string]int{
-			"dir1": 3,
-		}},
+		}, []int{3}},
 
 		{`localhost
 		  dir1 {
 		  }`, false, []string{
 			"localhost",
-		}, map[string]int{
-			"dir1": 3,
-		}},
+		}, []int{3}},
 
 		{`localhost
 		  dir1 {
 		  } }`, true, []string{
 			"localhost",
-		}, map[string]int{
-			"dir1": 3,
-		}},
+		}, []int{}},
 
 		{`localhost
 		  dir1 {
@@ -197,48 +170,38 @@ func TestParseOneAndImport(t *testing.T) {
 		  }
 		  dir2 foo bar`, false, []string{
 			"localhost",
-		}, map[string]int{
-			"dir1": 7,
-			"dir2": 3,
-		}},
+		}, []int{7, 3}},
 
-		{``, false, []string{}, map[string]int{}},
+		{``, false, []string{}, []int{}},
 
 		{`localhost
 		  dir1 arg1
 		  import testdata/import_test1.txt`, false, []string{
 			"localhost",
-		}, map[string]int{
-			"dir1": 2,
-			"dir2": 3,
-			"dir3": 1,
-		}},
+		}, []int{2, 3, 1}},
 
 		{`import testdata/import_test2.txt`, false, []string{
 			"host1",
-		}, map[string]int{
-			"dir1": 1,
-			"dir2": 2,
-		}},
+		}, []int{1, 2}},
 
-		{`import testdata/import_test1.txt testdata/import_test2.txt`, true, []string{}, map[string]int{}},
+		{`import testdata/import_test1.txt testdata/import_test2.txt`, true, []string{}, []int{}},
 
-		{`import testdata/not_found.txt`, true, []string{}, map[string]int{}},
+		{`import testdata/not_found.txt`, true, []string{}, []int{}},
 
-		{`""`, false, []string{}, map[string]int{}},
+		{`""`, false, []string{}, []int{}},
 
-		{``, false, []string{}, map[string]int{}},
+		{``, false, []string{}, []int{}},
 
 		// test cases found by fuzzing!
-		{`import }{$"`, true, []string{}, map[string]int{}},
-		{`import /*/*.txt`, true, []string{}, map[string]int{}},
-		{`import /???/?*?o`, true, []string{}, map[string]int{}},
-		{`import /??`, true, []string{}, map[string]int{}},
-		{`import /[a-z]`, true, []string{}, map[string]int{}},
-		{`import {$}`, true, []string{}, map[string]int{}},
-		{`import {%}`, true, []string{}, map[string]int{}},
-		{`import {$$}`, true, []string{}, map[string]int{}},
-		{`import {%%}`, true, []string{}, map[string]int{}},
+		{`import }{$"`, true, []string{}, []int{}},
+		{`import /*/*.txt`, true, []string{}, []int{}},
+		{`import /???/?*?o`, true, []string{}, []int{}},
+		{`import /??`, true, []string{}, []int{}},
+		{`import /[a-z]`, true, []string{}, []int{}},
+		{`import {$}`, true, []string{}, []int{}},
+		{`import {%}`, true, []string{}, []int{}},
+		{`import {$$}`, true, []string{}, []int{}},
+		{`import {%%}`, true, []string{}, []int{}},
 	} {
 		result, err := testParseOne(test.input)
 
@@ -261,15 +224,16 @@ func TestParseOneAndImport(t *testing.T) {
 			}
 		}
 
-		if len(result.Tokens) != len(test.tokens) {
-			t.Errorf("Test %d: Expected %d directives, had %d",
-				i, len(test.tokens), len(result.Tokens))
+		if len(result.Segments) != len(test.numTokens) {
+			t.Errorf("Test %d: Expected %d segments, had %d",
+				i, len(test.numTokens), len(result.Segments))
 			continue
 		}
-		for directive, tokens := range result.Tokens {
-			if len(tokens) != test.tokens[directive] {
-				t.Errorf("Test %d, directive '%s': Expected %d tokens, counted %d",
-					i, directive, test.tokens[directive], len(tokens))
+
+		for j, seg := range result.Segments {
+			if len(seg) != test.numTokens[j] {
+				t.Errorf("Test %d, segment %d: Expected %d tokens, counted %d",
+					i, j, test.numTokens[j], len(seg))
 				continue
 			}
 		}
@@ -289,12 +253,12 @@ func TestRecursiveImport(t *testing.T) {
 			t.Errorf("got keys unexpected: expect localhost, got %v", got.Keys)
 			return false
 		}
-		if len(got.Tokens) != 2 {
-			t.Errorf("got wrong number of tokens: expect 2, got %d", len(got.Tokens))
+		if len(got.Segments) != 2 {
+			t.Errorf("got wrong number of segments: expect 2, got %d", len(got.Segments))
 			return false
 		}
-		if len(got.Tokens["dir1"]) != 1 || len(got.Tokens["dir2"]) != 2 {
-			t.Errorf("got unexpect tokens: %v", got.Tokens)
+		if len(got.Segments[0]) != 1 || len(got.Segments[1]) != 2 {
+			t.Errorf("got unexpect tokens: %v", got.Segments)
 			return false
 		}
 		return true
@@ -384,12 +348,12 @@ func TestDirectiveImport(t *testing.T) {
 			t.Errorf("got keys unexpected: expect localhost, got %v", got.Keys)
 			return false
 		}
-		if len(got.Tokens) != 2 {
-			t.Errorf("got wrong number of tokens: expect 2, got %d", len(got.Tokens))
+		if len(got.Segments) != 2 {
+			t.Errorf("got wrong number of segments: expect 2, got %d", len(got.Segments))
 			return false
 		}
-		if len(got.Tokens["dir1"]) != 1 || len(got.Tokens["proxy"]) != 8 {
-			t.Errorf("got unexpect tokens: %v", got.Tokens)
+		if len(got.Segments[0]) != 1 || len(got.Segments[1]) != 8 {
+			t.Errorf("got unexpect tokens: %v", got.Segments)
 			return false
 		}
 		return true
@@ -557,21 +521,21 @@ func TestEnvironmentReplacement(t *testing.T) {
 	if actual, expected := blocks[0].Keys[0], ":8080"; expected != actual {
 		t.Errorf("Expected key to be '%s' but was '%s'", expected, actual)
 	}
-	if actual, expected := blocks[0].Tokens["dir1"][1].Text, "foobar"; expected != actual {
+	if actual, expected := blocks[0].Segments[0][1].Text, "foobar"; expected != actual {
 		t.Errorf("Expected argument to be '%s' but was '%s'", expected, actual)
 	}
 
 	// combined windows env vars in argument
 	p = testParser(":{%PORT%}\ndir1 {%ADDRESS%}/{%FOOBAR%}")
 	blocks, _ = p.parseAll()
-	if actual, expected := blocks[0].Tokens["dir1"][1].Text, "servername.com/foobar"; expected != actual {
+	if actual, expected := blocks[0].Segments[0][1].Text, "servername.com/foobar"; expected != actual {
 		t.Errorf("Expected argument to be '%s' but was '%s'", expected, actual)
 	}
 
 	// malformed env var (windows)
 	p = testParser(":1234\ndir1 {%ADDRESS}")
 	blocks, _ = p.parseAll()
-	if actual, expected := blocks[0].Tokens["dir1"][1].Text, "{%ADDRESS}"; expected != actual {
+	if actual, expected := blocks[0].Segments[0][1].Text, "{%ADDRESS}"; expected != actual {
 		t.Errorf("Expected host to be '%s' but was '%s'", expected, actual)
 	}
 
@@ -585,22 +549,18 @@ func TestEnvironmentReplacement(t *testing.T) {
 	// in quoted field
 	p = testParser(":1234\ndir1 \"Test {$FOOBAR} test\"")
 	blocks, _ = p.parseAll()
-	if actual, expected := blocks[0].Tokens["dir1"][1].Text, "Test foobar test"; expected != actual {
+	if actual, expected := blocks[0].Segments[0][1].Text, "Test foobar test"; expected != actual {
 		t.Errorf("Expected argument to be '%s' but was '%s'", expected, actual)
 	}
 
 	// after end token
 	p = testParser(":1234\nanswer \"{{ .Name }} {$FOOBAR}\"")
 	blocks, _ = p.parseAll()
-	if actual, expected := blocks[0].Tokens["answer"][1].Text, "{{ .Name }} foobar"; expected != actual {
+	if actual, expected := blocks[0].Segments[0][1].Text, "{{ .Name }} foobar"; expected != actual {
 		t.Errorf("Expected argument to be '%s' but was '%s'", expected, actual)
 	}
 }
 
-func testParser(input string) parser {
-	return parser{Dispenser: newTestDispenser(input)}
-}
-
 func TestSnippets(t *testing.T) {
 	p := testParser(`
 		(common) {
@@ -617,7 +577,7 @@ func TestSnippets(t *testing.T) {
 	}
 	for _, b := range blocks {
 		t.Log(b.Keys)
-		t.Log(b.Tokens)
+		t.Log(b.Segments)
 	}
 	if len(blocks) != 1 {
 		t.Fatalf("Expect exactly one server block. Got %d.", len(blocks))
@@ -625,16 +585,15 @@ func TestSnippets(t *testing.T) {
 	if actual, expected := blocks[0].Keys[0], "http://example.com"; expected != actual {
 		t.Errorf("Expected server name to be '%s' but was '%s'", expected, actual)
 	}
-	if len(blocks[0].Tokens) != 2 {
-		t.Fatalf("Server block should have tokens from import")
+	if len(blocks[0].Segments) != 2 {
+		t.Fatalf("Server block should have tokens from import, got: %+v", blocks[0])
 	}
-	if actual, expected := blocks[0].Tokens["gzip"][0].Text, "gzip"; expected != actual {
+	if actual, expected := blocks[0].Segments[0][0].Text, "gzip"; expected != actual {
 		t.Errorf("Expected argument to be '%s' but was '%s'", expected, actual)
 	}
-	if actual, expected := blocks[0].Tokens["errors"][1].Text, "stderr"; expected != actual {
+	if actual, expected := blocks[0].Segments[1][1].Text, "stderr"; expected != actual {
 		t.Errorf("Expected argument to be '%s' but was '%s'", expected, actual)
 	}
-
 }
 
 func writeStringToTempFileOrDie(t *testing.T, str string) (pathToFile string) {
@@ -666,9 +625,9 @@ func TestImportedFilesIgnoreNonDirectiveImportTokens(t *testing.T) {
 	}
 	for _, b := range blocks {
 		t.Log(b.Keys)
-		t.Log(b.Tokens)
+		t.Log(b.Segments)
 	}
-	auth := blocks[0].Tokens["basicauth"]
+	auth := blocks[0].Segments[0]
 	line := auth[0].Text + " " + auth[1].Text + " " + auth[2].Text + " " + auth[3].Text
 	if line != "basicauth / import password" {
 		// Previously, it would be changed to:
@@ -701,7 +660,7 @@ func TestSnippetAcrossMultipleFiles(t *testing.T) {
 	}
 	for _, b := range blocks {
 		t.Log(b.Keys)
-		t.Log(b.Tokens)
+		t.Log(b.Segments)
 	}
 	if len(blocks) != 1 {
 		t.Fatalf("Expect exactly one server block. Got %d.", len(blocks))
@@ -709,10 +668,14 @@ func TestSnippetAcrossMultipleFiles(t *testing.T) {
 	if actual, expected := blocks[0].Keys[0], "http://example.com"; expected != actual {
 		t.Errorf("Expected server name to be '%s' but was '%s'", expected, actual)
 	}
-	if len(blocks[0].Tokens) != 1 {
+	if len(blocks[0].Segments) != 1 {
 		t.Fatalf("Server block should have tokens from import")
 	}
-	if actual, expected := blocks[0].Tokens["gzip"][0].Text, "gzip"; expected != actual {
+	if actual, expected := blocks[0].Segments[0][0].Text, "gzip"; expected != actual {
 		t.Errorf("Expected argument to be '%s' but was '%s'", expected, actual)
 	}
 }
+
+func testParser(input string) parser {
+	return parser{Dispenser: newTestDispenser(input)}
+}

caddyconfig/httpcaddyfile/addresses.go

@@ -22,7 +22,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
+	"github.com/caddyserver/caddy/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 	"github.com/mholt/certmagic"
 )
@@ -73,8 +73,8 @@ import (
 // repetition may be undesirable, so call consolidateAddrMappings() to map
 // multiple addresses to the same lists of server blocks (a many:many mapping).
 // (Doing this is essentially a map-reduce technique.)
-func (st *ServerType) mapAddressToServerBlocks(originalServerBlocks []caddyfile.ServerBlock) (map[string][]caddyfile.ServerBlock, error) {
-	sbmap := make(map[string][]caddyfile.ServerBlock)
+func (st *ServerType) mapAddressToServerBlocks(originalServerBlocks []serverBlock) (map[string][]serverBlock, error) {
+	sbmap := make(map[string][]serverBlock)
 
 	for i, sblock := range originalServerBlocks {
 		// within a server block, we need to map all the listener addresses
@@ -83,7 +83,7 @@ func (st *ServerType) mapAddressToServerBlocks(originalServerBlocks []caddyfile.
 		// key of a server block as its own, but without having to repeat its
 		// contents in cases where multiple keys really can be served together
 		addrToKeys := make(map[string][]string)
-		for j, key := range sblock.Keys {
+		for j, key := range sblock.block.Keys {
 			// a key can have multiple listener addresses if there are multiple
 			// arguments to the 'bind' directive (although they will all have
 			// the same port, since the port is defined by the key or is implicit
@@ -105,9 +105,12 @@ func (st *ServerType) mapAddressToServerBlocks(originalServerBlocks []caddyfile.
 		// server block are only the ones which use the address; but
 		// the contents (tokens) are of course the same
 		for addr, keys := range addrToKeys {
-			sbmap[addr] = append(sbmap[addr], caddyfile.ServerBlock{
+			sbmap[addr] = append(sbmap[addr], serverBlock{
+				block: caddyfile.ServerBlock{
 					Keys:     keys,
-				Tokens: sblock.Tokens,
+					Segments: sblock.block.Segments,
+				},
+				pile: sblock.pile,
 			})
 		}
 	}
@@ -123,7 +126,7 @@ func (st *ServerType) mapAddressToServerBlocks(originalServerBlocks []caddyfile.
 // entries are deleted from the addrToServerBlocks map. Essentially, each pairing (each
 // association from multiple addresses to multiple server blocks; i.e. each element of
 // the returned slice) becomes a server definition in the output JSON.
-func (st *ServerType) consolidateAddrMappings(addrToServerBlocks map[string][]caddyfile.ServerBlock) []sbAddrAssociation {
+func (st *ServerType) consolidateAddrMappings(addrToServerBlocks map[string][]serverBlock) []sbAddrAssociation {
 	var sbaddrs []sbAddrAssociation
 	for addr, sblocks := range addrToServerBlocks {
 		// we start with knowing that at least this address
@@ -151,11 +154,12 @@ func (st *ServerType) consolidateAddrMappings(addrToServerBlocks map[string][]ca
 	return sbaddrs
 }
 
-func (st *ServerType) listenerAddrsForServerBlockKey(sblock caddyfile.ServerBlock, key string) ([]string, error) {
-	addr, err := standardizeAddress(key)
+func (st *ServerType) listenerAddrsForServerBlockKey(sblock serverBlock, key string) ([]string, error) {
+	addr, err := ParseAddress(key)
 	if err != nil {
 		return nil, fmt.Errorf("parsing key: %v", err)
 	}
+	addr = addr.Normalize()
 
 	lnPort := defaultPort
 	if addr.Port != "" {
@@ -168,11 +172,8 @@ func (st *ServerType) listenerAddrsForServerBlockKey(sblock caddyfile.ServerBloc
 
 	// the bind directive specifies hosts, but is optional
 	var lnHosts []string
-	for i, token := range sblock.Tokens["bind"] {
-		if i == 0 {
-			continue
-		}
-		lnHosts = append(lnHosts, token.Text)
+	for _, cfgVal := range sblock.pile["bind"] {
+		lnHosts = append(lnHosts, cfgVal.Value.([]string)...)
 	}
 	if len(lnHosts) == 0 {
 		lnHosts = []string{""}
@@ -205,7 +206,53 @@ type Address struct {
 	Original, Scheme, Host, Port, Path string
 }
 
-// String returns a human-friendly print of the address.
+// ParseAddress parses an address string into a structured format with separate
+// scheme, host, port, and path portions, as well as the original input string.
+func ParseAddress(str string) (Address, error) {
+	httpPort, httpsPort := strconv.Itoa(certmagic.HTTPPort), strconv.Itoa(certmagic.HTTPSPort)
+
+	input := str
+
+	// Split input into components (prepend with // to force host portion by default)
+	if !strings.Contains(str, "//") && !strings.HasPrefix(str, "/") {
+		str = "//" + str
+	}
+
+	u, err := url.Parse(str)
+	if err != nil {
+		return Address{}, err
+	}
+
+	// separate host and port
+	host, port, err := net.SplitHostPort(u.Host)
+	if err != nil {
+		host, port, err = net.SplitHostPort(u.Host + ":")
+		if err != nil {
+			host = u.Host
+		}
+	}
+
+	// see if we can set port based off scheme
+	if port == "" {
+		if u.Scheme == "http" {
+			port = httpPort
+		} else if u.Scheme == "https" {
+			port = httpsPort
+		}
+	}
+
+	// error if scheme and port combination violate convention
+	if (u.Scheme == "http" && port == httpsPort) || (u.Scheme == "https" && port == httpPort) {
+		return Address{}, fmt.Errorf("[%s] scheme and port violate convention", input)
+	}
+
+	return Address{Original: input, Scheme: u.Scheme, Host: host, Port: port, Path: u.Path}, err
+}
+
+// TODO: which of the methods on Address are even used?
+
+// String returns a human-readable form of a. It will
+// be a cleaned-up and filled-out URL string.
 func (a Address) String() string {
 	if a.Host == "" && a.Port == "" {
 		return ""
@@ -235,16 +282,7 @@ func (a Address) String() string {
 	return s
 }
 
-// VHost returns a sensible concatenation of Host:Port/Path from a.
-// It's basically the a.Original but without the scheme.
-func (a Address) VHost() string {
-	if idx := strings.Index(a.Original, "://"); idx > -1 {
-		return a.Original[idx+3:]
-	}
-	return a.Original
-}
-
-// Normalize normalizes URL: turn scheme and host names into lower case
+// Normalize returns a normalized version of a.
 func (a Address) Normalize() Address {
 	path := a.Path
 	if !caseSensitivePath {
@@ -266,8 +304,8 @@ func (a Address) Normalize() Address {
 	}
 }
 
-// Key is similar to String, just replaces scheme and host values with modified values.
-// Unlike String it doesn't add anything default (scheme, port, etc)
+// Key returns a string form of a, much like String() does, but this
+// method doesn't add anything default that wasn't in the original.
 func (a Address) Key() string {
 	res := ""
 	if a.Scheme != "" {
@@ -276,75 +314,19 @@ func (a Address) Key() string {
 	if a.Host != "" {
 		res += a.Host
 	}
-	if a.Port != "" {
-		if strings.HasPrefix(a.Original[len(res):], ":"+a.Port) {
 	// insert port only if the original has its own explicit port
+	if a.Port != "" &&
+		len(a.Original) >= len(res) &&
+		strings.HasPrefix(a.Original[len(res):], ":"+a.Port) {
 		res += ":" + a.Port
 	}
-	}
 	if a.Path != "" {
 		res += a.Path
 	}
 	return res
 }
 
-// standardizeAddress parses an address string into a structured format with separate
-// scheme, host, port, and path portions, as well as the original input string.
-func standardizeAddress(str string) (Address, error) {
-	httpPort, httpsPort := strconv.Itoa(certmagic.HTTPPort), strconv.Itoa(certmagic.HTTPSPort)
-
-	input := str
-
-	// Split input into components (prepend with // to assert host by default)
-	if !strings.Contains(str, "//") && !strings.HasPrefix(str, "/") {
-		str = "//" + str
-	}
-	u, err := url.Parse(str)
-	if err != nil {
-		return Address{}, err
-	}
-
-	// separate host and port
-	host, port, err := net.SplitHostPort(u.Host)
-	if err != nil {
-		host, port, err = net.SplitHostPort(u.Host + ":")
-		if err != nil {
-			host = u.Host
-		}
-	}
-
-	// see if we can set port based off scheme
-	if port == "" {
-		if u.Scheme == "http" {
-			port = httpPort
-		} else if u.Scheme == "https" {
-			port = httpsPort
-		}
-	}
-
-	// repeated or conflicting scheme is confusing, so error
-	if u.Scheme != "" && (port == "http" || port == "https") {
-		return Address{}, fmt.Errorf("[%s] scheme specified twice in address", input)
-	}
-
-	// error if scheme and port combination violate convention
-	if (u.Scheme == "http" && port == httpsPort) || (u.Scheme == "https" && port == httpPort) {
-		return Address{}, fmt.Errorf("[%s] scheme and port violate convention", input)
-	}
-
-	// standardize http and https ports to their respective port numbers
-	if port == "http" {
-		u.Scheme = "http"
-		port = httpPort
-	} else if port == "https" {
-		u.Scheme = "https"
-		port = httpsPort
-	}
-
-	return Address{Original: input, Scheme: u.Scheme, Host: host, Port: port, Path: u.Path}, err
-}
-
 const (
 	defaultPort       = "2015"
-	caseSensitivePath = false
+	caseSensitivePath = false // TODO: Used?
 )

caddyconfig/httpcaddyfile/addresses_test.go

@@ -1,22 +1,11 @@
-// Copyright 2015 Matthew Holt and The Caddy Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 package httpcaddyfile
 
-import "testing"
+import (
+	"strings"
+	"testing"
+)
 
-func TestStandardizeAddress(t *testing.T) {
+func TestParseAddress(t *testing.T) {
 	for i, test := range []struct {
 		input                    string
 		scheme, host, port, path string
@@ -31,12 +20,13 @@ func TestStandardizeAddress(t *testing.T) {
 		{`[::1]`, "", "::1", "", "", false},
 		{`[::1]:1234`, "", "::1", "1234", "", false},
 		{`:`, "", "", "", "", false},
-		{`localhost:http`, "http", "localhost", "80", "", false},
-		{`localhost:https`, "https", "localhost", "443", "", false},
-		{`:http`, "http", "", "80", "", false},
-		{`:https`, "https", "", "443", "", false},
+		{`:http`, "", "", "", "", true},
+		{`:https`, "", "", "", "", true},
+		{`localhost:http`, "", "", "", "", true}, // using service name in port is verboten, as of Go 1.12.8
+		{`localhost:https`, "", "", "", "", true},
 		{`http://localhost:https`, "", "", "", "", true}, // conflict
 		{`http://localhost:http`, "", "", "", "", true},  // repeated scheme
+		{`host:https/path`, "", "", "", "", true},
 		{`http://localhost:443`, "", "", "", "", true}, // not conventional
 		{`https://localhost:80`, "", "", "", "", true}, // not conventional
 		{`http://localhost`, "http", "localhost", "80", "", false},
@@ -58,10 +48,9 @@ func TestStandardizeAddress(t *testing.T) {
 		{`http://host/path`, "http", "host", "80", "/path", false},
 		{`https://host:443/path/foo`, "https", "host", "443", "/path/foo", false},
 		{`host:80/path`, "", "host", "80", "/path", false},
-		{`host:https/path`, "https", "host", "443", "/path", false},
 		{`/path`, "", "", "", "/path", false},
 	} {
-		actual, err := standardizeAddress(test.input)
+		actual, err := ParseAddress(test.input)
 
 		if err != nil && !test.shouldErr {
 			t.Errorf("Test %d (%s): Expected no error, but had error: %v", i, test.input, err)
@@ -88,24 +77,6 @@ func TestStandardizeAddress(t *testing.T) {
 	}
 }
 
-func TestAddressVHost(t *testing.T) {
-	for i, test := range []struct {
-		addr     Address
-		expected string
-	}{
-		{Address{Original: "host:1234"}, "host:1234"},
-		{Address{Original: "host:1234/foo"}, "host:1234/foo"},
-		{Address{Original: "host/foo"}, "host/foo"},
-		{Address{Original: "http://host/foo"}, "host/foo"},
-		{Address{Original: "https://host/foo"}, "host/foo"},
-	} {
-		actual := test.addr.VHost()
-		if actual != test.expected {
-			t.Errorf("Test %d: expected '%s' but got '%s'", i, test.expected, actual)
-		}
-	}
-}
-
 func TestAddressString(t *testing.T) {
 	for i, test := range []struct {
 		addr     Address
@@ -127,3 +98,69 @@ func TestAddressString(t *testing.T) {
 		}
 	}
 }
+
+func TestKeyNormalization(t *testing.T) {
+	testCases := []struct {
+		input  string
+		expect string
+	}{
+		{
+			input:  "http://host:1234/path",
+			expect: "http://host:1234/path",
+		},
+		{
+			input:  "HTTP://A/ABCDEF",
+			expect: "http://a/ABCDEF",
+		},
+		{
+			input:  "A/ABCDEF",
+			expect: "a/ABCDEF",
+		},
+		{
+			input:  "A:2015/Path",
+			expect: "a:2015/Path",
+		},
+		{
+			input:  ":80",
+			expect: ":80",
+		},
+		{
+			input:  ":443",
+			expect: ":443",
+		},
+		{
+			input:  ":1234",
+			expect: ":1234",
+		},
+		{
+			input:  "",
+			expect: "",
+		},
+		{
+			input:  ":",
+			expect: "",
+		},
+		{
+			input:  "[::]",
+			expect: "::",
+		},
+	}
+	for i, tc := range testCases {
+		addr, err := ParseAddress(tc.input)
+		if err != nil {
+			t.Errorf("Test %d: Parsing address '%s': %v", i, tc.input, err)
+			continue
+		}
+		expect := tc.expect
+		if !caseSensitivePath {
+			// every other part of the address should be lowercased when normalized,
+			// so simply lower-case the whole thing to do case-insensitive comparison
+			// of the path as well
+			expect = strings.ToLower(expect)
+		}
+		if actual := addr.Normalize().Key(); actual != expect {
+			t.Errorf("Test %d: Normalized key for address '%s' was '%s' but expected '%s'", i, tc.input, actual, expect)
+		}
+
+	}
+}

caddyconfig/httpcaddyfile/builtins.go

@@ -19,81 +19,209 @@ import (
 	"fmt"
 	"html"
 	"net/http"
+	"reflect"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig"
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
-	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
+	"github.com/caddyserver/caddy/caddyconfig"
+	"github.com/caddyserver/caddy/modules/caddyhttp"
 	"github.com/caddyserver/caddy/v2/modules/caddytls"
 )
 
-func (st *ServerType) parseRoot(
-	tkns []caddyfile.Token,
-	matcherDefs map[string]map[string]json.RawMessage,
-	warnings *[]caddyconfig.Warning,
-) ([]caddyhttp.Route, error) {
-	var routes []caddyhttp.Route
+func init() {
+	RegisterDirective("bind", parseBind)
+	RegisterDirective("root", parseRoot)
+	RegisterDirective("tls", parseTLS)
+	RegisterHandlerDirective("redir", parseRedir)
+}
 
-	matchersAndTokens, err := st.tokensToMatcherSets(tkns, matcherDefs, warnings)
+func parseBind(h Helper) ([]ConfigValue, error) {
+	var lnHosts []string
+	for h.Next() {
+		lnHosts = append(lnHosts, h.RemainingArgs()...)
+	}
+	return h.NewBindAddresses(lnHosts), nil
+}
+
+func parseRoot(h Helper) ([]ConfigValue, error) {
+	if !h.Next() {
+		return nil, h.ArgErr()
+	}
+
+	matcherSet, ok, err := h.MatcherToken()
 	if err != nil {
 		return nil, err
 	}
-
-	for _, mst := range matchersAndTokens {
-		d := caddyfile.NewDispenser("Caddyfile", mst.tokens)
-
-		var root string
-		for d.Next() {
-			if !d.NextArg() {
-				return nil, d.ArgErr()
+	if !ok {
+		// no matcher token; oops
+		h.Dispenser.Prev()
 	}
-			root = d.Val()
-			if d.NextArg() {
-				return nil, d.ArgErr()
+
+	if !h.NextArg() {
+		return nil, h.ArgErr()
 	}
+	root := h.Val()
+	if h.NextArg() {
+		return nil, h.ArgErr()
 	}
 
 	varsHandler := caddyhttp.VarsMiddleware{"root": root}
 	route := caddyhttp.Route{
-			Handle: []json.RawMessage{
-				caddyconfig.JSONModuleObject(varsHandler, "handler", "vars", warnings),
+		HandlersRaw: []json.RawMessage{
+			caddyconfig.JSONModuleObject(varsHandler, "handler", "vars", nil),
 		},
 	}
-		if mst.matcherSet != nil {
-			route.MatcherSets = []map[string]json.RawMessage{mst.matcherSet}
+	if matcherSet != nil {
+		route.MatcherSetsRaw = []map[string]json.RawMessage{matcherSet}
 	}
 
-		routes = append(routes, route)
-	}
-
-	return routes, nil
+	return h.NewVarsRoute(route), nil
 }
 
-func (st *ServerType) parseRedir(
-	tkns []caddyfile.Token,
-	matcherDefs map[string]map[string]json.RawMessage,
-	warnings *[]caddyconfig.Warning,
-) ([]caddyhttp.Route, error) {
-	var routes []caddyhttp.Route
+func parseTLS(h Helper) ([]ConfigValue, error) {
+	var configVals []ConfigValue
 
-	matchersAndTokens, err := st.tokensToMatcherSets(tkns, matcherDefs, warnings)
-	if err != nil {
-		return nil, err
+	cp := new(caddytls.ConnectionPolicy)
+	var fileLoader caddytls.FileLoader
+	var folderLoader caddytls.FolderLoader
+	var mgr caddytls.ACMEManagerMaker
+	var off bool
+
+	for h.Next() {
+		// file certificate loader
+		firstLine := h.RemainingArgs()
+		switch len(firstLine) {
+		case 0:
+		case 1:
+			if firstLine[0] == "off" {
+				off = true
+			} else {
+				mgr.Email = firstLine[0]
+			}
+		case 2:
+			fileLoader = append(fileLoader, caddytls.CertKeyFilePair{
+				Certificate: firstLine[0],
+				Key:         firstLine[1],
+				// TODO: add tags, for enterprise module's certificate selection
+			})
+		default:
+			return nil, h.ArgErr()
 		}
 
-	for _, mst := range matchersAndTokens {
-		var route caddyhttp.Route
+		var hasBlock bool
+		for h.NextBlock() {
+			hasBlock = true
 
-		d := caddyfile.NewDispenser("Caddyfile", mst.tokens)
+			switch h.Val() {
 
-		for d.Next() {
-			if !d.NextArg() {
-				return nil, d.ArgErr()
+			// connection policy
+			case "protocols":
+				args := h.RemainingArgs()
+				if len(args) == 0 {
+					return nil, h.SyntaxErr("one or two protocols")
 				}
-			to := d.Val()
+				if len(args) > 0 {
+					if _, ok := caddytls.SupportedProtocols[args[0]]; !ok {
+						return nil, h.Errf("Wrong protocol name or protocol not supported: '%s'", args[0])
+					}
+					cp.ProtocolMin = args[0]
+				}
+				if len(args) > 1 {
+					if _, ok := caddytls.SupportedProtocols[args[1]]; !ok {
+						return nil, h.Errf("Wrong protocol name or protocol not supported: '%s'", args[1])
+					}
+					cp.ProtocolMax = args[1]
+				}
+			case "ciphers":
+				for h.NextArg() {
+					if _, ok := caddytls.SupportedCipherSuites[h.Val()]; !ok {
+						return nil, h.Errf("Wrong cipher suite name or cipher suite not supported: '%s'", h.Val())
+					}
+					cp.CipherSuites = append(cp.CipherSuites, h.Val())
+				}
+			case "curves":
+				for h.NextArg() {
+					if _, ok := caddytls.SupportedCurves[h.Val()]; !ok {
+						return nil, h.Errf("Wrong curve name or curve not supported: '%s'", h.Val())
+					}
+					cp.Curves = append(cp.Curves, h.Val())
+				}
+			case "alpn":
+				args := h.RemainingArgs()
+				if len(args) == 0 {
+					return nil, h.ArgErr()
+				}
+				cp.ALPN = args
+
+			// certificate folder loader
+			case "load":
+				folderLoader = append(folderLoader, h.RemainingArgs()...)
+
+			// automation policy
+			case "ca":
+				arg := h.RemainingArgs()
+				if len(arg) != 1 {
+					return nil, h.ArgErr()
+				}
+				mgr.CA = arg[0]
+
+				// TODO: other properties for automation manager
+			}
+		}
+
+		// a naked tls directive is not allowed
+		if len(firstLine) == 0 && !hasBlock {
+			return nil, h.ArgErr()
+		}
+	}
+
+	// connection policy
+	configVals = append(configVals, ConfigValue{
+		Class: "tls.connection_policy",
+		Value: cp,
+	})
+
+	// certificate loaders
+	if len(fileLoader) > 0 {
+		configVals = append(configVals, ConfigValue{
+			Class: "tls.certificate_loader",
+			Value: fileLoader,
+		})
+	}
+	if len(folderLoader) > 0 {
+		configVals = append(configVals, ConfigValue{
+			Class: "tls.certificate_loader",
+			Value: folderLoader,
+		})
+	}
+
+	// automation policy
+	if off {
+		configVals = append(configVals, ConfigValue{
+			Class: "tls.off",
+			Value: true,
+		})
+	} else if !reflect.DeepEqual(mgr, caddytls.ACMEManagerMaker{}) {
+		configVals = append(configVals, ConfigValue{
+			Class: "tls.automation_manager",
+			Value: mgr,
+		})
+	}
+
+	return configVals, nil
+}
+
+func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
+	if !h.Next() {
+		return nil, h.ArgErr()
+	}
+
+	if !h.NextArg() {
+		return nil, h.ArgErr()
+	}
+	to := h.Val()
 
 	var code string
-			if d.NextArg() {
-				code = d.Val()
+	if h.NextArg() {
+		code = h.Val()
 	}
 	if code == "permanent" {
 		code = "301"
@@ -119,139 +247,9 @@ func (st *ServerType) parseRedir(
 		body = fmt.Sprintf(metaRedir, safeTo, safeTo, safeTo, safeTo)
 	}
 
-			handler := caddyhttp.StaticResponse{
+	return caddyhttp.StaticResponse{
 		StatusCode: caddyhttp.WeakString(code),
 		Headers:    http.Header{"Location": []string{to}},
 		Body:       body,
-			}
-
-			route.Handle = append(route.Handle,
-				caddyconfig.JSONModuleObject(handler, "handler", "static_response", warnings))
-		}
-
-		if mst.matcherSet != nil {
-			route.MatcherSets = []map[string]json.RawMessage{mst.matcherSet}
-		}
-
-		routes = append(routes, route)
-	}
-
-	return routes, nil
-}
-
-func (st *ServerType) parseTLSAutomationManager(d *caddyfile.Dispenser) (caddytls.ACMEManagerMaker, error) {
-	var m caddytls.ACMEManagerMaker
-
-	for d.Next() {
-		firstLine := d.RemainingArgs()
-		if len(firstLine) == 1 && firstLine[0] != "off" {
-			m.Email = firstLine[0]
-		}
-
-		var hasBlock bool
-		for d.NextBlock() {
-			hasBlock = true
-			switch d.Val() {
-			case "ca":
-				arg := d.RemainingArgs()
-				if len(arg) != 1 {
-					return m, d.ArgErr()
-				}
-				m.CA = arg[0]
-				// TODO: other properties
-			}
-		}
-
-		// a naked tls directive is not allowed
-		if len(firstLine) == 0 && !hasBlock {
-			return m, d.ArgErr()
-		}
-	}
-
-	return m, nil
-}
-
-func (st *ServerType) parseTLSCerts(d *caddyfile.Dispenser) (map[string]caddytls.CertificateLoader, error) {
-	var fileLoader caddytls.FileLoader
-	var folderLoader caddytls.FolderLoader
-
-	for d.Next() {
-		// file loader
-		firstLine := d.RemainingArgs()
-		if len(firstLine) == 2 {
-			fileLoader = append(fileLoader, caddytls.CertKeyFilePair{
-				Certificate: firstLine[0],
-				Key:         firstLine[1],
-				// TODO: tags, for enterprise module's certificate selection
-			})
-		}
-
-		// folder loader
-		for d.NextBlock() {
-			if d.Val() == "load" {
-				folderLoader = append(folderLoader, d.RemainingArgs()...)
-			}
-		}
-	}
-
-	// put configured loaders into the map
-	loaders := make(map[string]caddytls.CertificateLoader)
-	if len(fileLoader) > 0 {
-		loaders["load_files"] = fileLoader
-	}
-	if len(folderLoader) > 0 {
-		loaders["load_folders"] = folderLoader
-	}
-
-	return loaders, nil
-}
-
-func (st *ServerType) parseTLSConnPolicy(d *caddyfile.Dispenser) (*caddytls.ConnectionPolicy, error) {
-	cp := new(caddytls.ConnectionPolicy)
-
-	for d.Next() {
-		for d.NextBlock() {
-			switch d.Val() {
-			case "protocols":
-				args := d.RemainingArgs()
-				if len(args) == 0 {
-					return nil, d.SyntaxErr("one or two protocols")
-				}
-				if len(args) > 0 {
-					if _, ok := caddytls.SupportedProtocols[args[0]]; !ok {
-						return nil, d.Errf("Wrong protocol name or protocol not supported: '%s'", args[0])
-					}
-					cp.ProtocolMin = args[0]
-				}
-				if len(args) > 1 {
-					if _, ok := caddytls.SupportedProtocols[args[1]]; !ok {
-						return nil, d.Errf("Wrong protocol name or protocol not supported: '%s'", args[1])
-					}
-					cp.ProtocolMax = args[1]
-				}
-			case "ciphers":
-				for d.NextArg() {
-					if _, ok := caddytls.SupportedCipherSuites[d.Val()]; !ok {
-						return nil, d.Errf("Wrong cipher suite name or cipher suite not supported: '%s'", d.Val())
-					}
-					cp.CipherSuites = append(cp.CipherSuites, d.Val())
-				}
-			case "curves":
-				for d.NextArg() {
-					if _, ok := caddytls.SupportedCurves[d.Val()]; !ok {
-						return nil, d.Errf("Wrong curve name or curve not supported: '%s'", d.Val())
-					}
-					cp.Curves = append(cp.Curves, d.Val())
-				}
-			case "alpn":
-				args := d.RemainingArgs()
-				if len(args) == 0 {
-					return nil, d.ArgErr()
-				}
-				cp.ALPN = args
-			}
-		}
-	}
-
-	return cp, nil
+	}, nil
 }

caddyconfig/httpcaddyfile/directives.go

@@ -0,0 +1,182 @@
+// Copyright 2015 Matthew Holt and The Caddy Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package httpcaddyfile
+
+import (
+	"encoding/json"
+
+	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
+)
+
+// defaultDirectiveOrder specifies the order
+// to apply directives in HTTP routes.
+// TODO: finish the ability to customize this
+var defaultDirectiveOrder = []string{
+	"rewrite",
+	"try_files",
+	"headers",
+	"encode",
+	"templates",
+	"redir",
+	"static_response", // TODO: "reply" or "respond"?
+	"reverse_proxy",
+	"file_server",
+}
+
+// RegisterDirective registers a unique directive dir with an
+// associated unmarshaling (setup) function. When directive dir
+// is encountered in a Caddyfile, setupFunc will be called to
+// unmarshal its tokens.
+func RegisterDirective(dir string, setupFunc UnmarshalFunc) {
+	if _, ok := registeredDirectives[dir]; ok {
+		panic("directive " + dir + " already registered")
+	}
+	registeredDirectives[dir] = setupFunc
+}
+
+// RegisterHandlerDirective is like RegisterDirective, but for
+// directives which specifically output only an HTTP handler.
+func RegisterHandlerDirective(dir string, setupFunc UnmarshalHandlerFunc) {
+	RegisterDirective(dir, func(h Helper) ([]ConfigValue, error) {
+		if !h.Next() {
+			return nil, h.ArgErr()
+		}
+
+		matcherSet, ok, err := h.MatcherToken()
+		if err != nil {
+			return nil, err
+		}
+		if ok {
+			h.Dispenser.Delete() // strip matcher token
+		}
+
+		h.Dispenser.Reset() // pretend this lookahead never happened
+		val, err := setupFunc(h)
+		if err != nil {
+			return nil, err
+		}
+
+		return h.NewRoute(matcherSet, val), nil
+	})
+}
+
+// Helper is a type which helps setup a value from
+// Caddyfile tokens.
+type Helper struct {
+	*caddyfile.Dispenser
+	warnings    *[]caddyconfig.Warning
+	matcherDefs map[string]map[string]json.RawMessage
+}
+
+// JSON converts val into JSON. Any errors are added to warnings.
+func (h Helper) JSON(val interface{}, warnings *[]caddyconfig.Warning) json.RawMessage {
+	return caddyconfig.JSON(val, h.warnings)
+}
+
+// MatcherToken assumes the current token is (possibly) a matcher, and
+// if so, returns the matcher set along with a true value. If the current
+// token is not a matcher, nil and false is returned. Note that a true
+// value may be returned with a nil matcher set if it is a catch-all.
+func (h Helper) MatcherToken() (map[string]json.RawMessage, bool, error) {
+	if !h.NextArg() {
+		return nil, false, nil
+	}
+	return matcherSetFromMatcherToken(h.Dispenser.Token(), h.matcherDefs, h.warnings)
+}
+
+// NewRoute returns config values relevant to creating a new HTTP route.
+func (h Helper) NewRoute(matcherSet map[string]json.RawMessage,
+	handler caddyhttp.MiddlewareHandler) []ConfigValue {
+	mod, err := caddy.GetModule(caddy.GetModuleName(handler))
+	if err != nil {
+		// TODO: append to warnings
+	}
+	var matcherSetsRaw []map[string]json.RawMessage
+	if matcherSet != nil {
+		matcherSetsRaw = append(matcherSetsRaw, matcherSet)
+	}
+	return []ConfigValue{
+		{
+			Class: "route",
+			Value: caddyhttp.Route{
+				MatcherSetsRaw: matcherSetsRaw,
+				HandlersRaw:    []json.RawMessage{caddyconfig.JSONModuleObject(handler, "handler", mod.ID(), h.warnings)},
+			},
+		},
+	}
+}
+
+// NewBindAddresses returns config values relevant to adding
+// listener bind addresses to the config.
+func (h Helper) NewBindAddresses(addrs []string) []ConfigValue {
+	return []ConfigValue{{Class: "bind", Value: addrs}}
+}
+
+// NewVarsRoute returns config values relevant to adding a
+// "vars" wrapper route to the config.
+func (h Helper) NewVarsRoute(route caddyhttp.Route) []ConfigValue {
+	return []ConfigValue{{Class: "var", Value: route}}
+}
+
+// ConfigValue represents a value to be added to the final
+// configuration, or a value to be consulted when building
+// the final configuration.
+type ConfigValue struct {
+	// The kind of value this is. As the config is
+	// being built, the adapter will look in the
+	// "pile" for values belonging to a certain
+	// class when it is setting up a certain part
+	// of the config. The associated value will be
+	// type-asserted and placed accordingly.
+	Class string
+
+	// The value to be used when building the config.
+	// Generally its type is associated with the
+	// name of the Class.
+	Value interface{}
+
+	directive string
+}
+
+// serverBlock pairs a Caddyfile server block
+// with a "pile" of config values, keyed by class
+// name.
+type serverBlock struct {
+	block caddyfile.ServerBlock
+	pile  map[string][]ConfigValue // config values obtained from directives
+}
+
+type (
+	// UnmarshalFunc is a function which can unmarshal Caddyfile
+	// tokens into zero or more config values using a Helper type.
+	// These are passed in a call to RegisterDirective.
+	UnmarshalFunc func(h Helper) ([]ConfigValue, error)
+
+	// UnmarshalHandlerFunc is like UnmarshalFunc, except the
+	// output of the unmarshaling is an HTTP handler. This
+	// function does not need to deal with HTTP request matching
+	// which is abstracted away. Since writing HTTP handlers
+	// with Caddyfile support is very common, this is a more
+	// convenient way to add a handler to the chain since a lot
+	// of the details common to HTTP handlers are taken care of
+	// for you. These are passed to a call to
+	// RegisterHandlerDirective.
+	UnmarshalHandlerFunc func(h Helper) (caddyhttp.MiddlewareHandler, error)
+)
+
+var registeredDirectives = make(map[string]UnmarshalFunc)

caddyconfig/httpcaddyfile/handlers.go

@@ -17,7 +17,6 @@ package httpcaddyfile
 import (
 	"encoding/json"
 	"fmt"
-	"log"
 
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/caddyconfig"
@@ -55,38 +54,3 @@ func (st *ServerType) parseMatcherDefinitions(d *caddyfile.Dispenser) (map[strin
 	}
 	return matchers, nil
 }
-
-// directiveBuckets returns a list of middleware/handler directives.
-// Buckets are ordered, and directives should be evaluated in their
-// bucket order. Within a bucket, directives are not ordered. Hence,
-// the return value has a slice of buckets, where each bucket is a
-// map, which is a strongly-typed reminder that directives within a
-// bucket are not ordered.
-func directiveBuckets() []map[string]struct{} {
-	directiveBuckets := []map[string]struct{}{
-		// prefer odd-numbered buckets; evens are there for contingencies
-		{}, // 0
-		{}, // 1 - keep empty unless necessary
-		{}, // 2
-		{}, // 3 - first handlers, last responders
-		{}, // 4
-		{}, // 5 - middle of chain
-		{}, // 6
-		{}, // 7 - last handlers, first responders
-		{}, // 8
-		{}, // 9 - keep empty unless necessary
-		{}, // 10
-	}
-	for _, mod := range caddy.GetModules("http.handlers") {
-		if hd, ok := mod.New().(HandlerDirective); ok {
-			bucket := hd.Bucket()
-			if bucket < 0 || bucket >= len(directiveBuckets) {
-				log.Printf("[ERROR] directive %s: bucket out of range [0-%d): %d; skipping",
-					mod.Name, len(directiveBuckets), bucket)
-				continue
-			}
-			directiveBuckets[bucket][mod.ID()] = struct{}{}
-		}
-	}
-	return directiveBuckets
-}

caddyconfig/httpcaddyfile/httptype.go

@@ -17,17 +17,18 @@ package httpcaddyfile
 import (
 	"encoding/json"
 	"fmt"
+	"log"
 	"reflect"
+	"sort"
 	"strconv"
 	"strings"
 
-	"github.com/mholt/certmagic"
-
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/caddyconfig"
 	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 	"github.com/caddyserver/caddy/v2/modules/caddytls"
+	"github.com/mholt/certmagic"
 )
 
 func init() {
@@ -38,24 +39,57 @@ func init() {
 type ServerType struct {
 }
 
-// ValidDirectives returns the list of known directives.
-func (ServerType) ValidDirectives() []string {
-	dirs := []string{"matcher", "root", "tls", "redir"} // TODO: put special-case (hard-coded, or non-handler) directives here
-	for _, mod := range caddy.GetModules("http.handlers") {
-		if _, ok := mod.New().(HandlerDirective); ok {
-			dirs = append(dirs, mod.ID())
-		}
-	}
-	return dirs
-}
+// TODO: error on unrecognized directives
 
 // Setup makes a config from the tokens.
 func (st ServerType) Setup(originalServerBlocks []caddyfile.ServerBlock,
 	options map[string]string) (*caddy.Config, []caddyconfig.Warning, error) {
 	var warnings []caddyconfig.Warning
 
+	var serverBlocks []serverBlock
+	for _, sblock := range originalServerBlocks {
+		serverBlocks = append(serverBlocks, serverBlock{
+			block: sblock,
+			pile:  make(map[string][]ConfigValue),
+		})
+	}
+
+	for _, sb := range serverBlocks {
+		// extract matcher definitions
+		d := sb.block.DispenseDirective("matcher")
+		matcherDefs, err := st.parseMatcherDefinitions(d)
+		if err != nil {
+			return nil, nil, err
+		}
+
+		for _, segment := range sb.block.Segments {
+			dir := segment.Directive()
+			if dir == "matcher" {
+				// TODO: This is a special case because we pre-processed it; handle this better
+				continue
+			}
+			if dirFunc, ok := registeredDirectives[dir]; ok {
+				results, err := dirFunc(Helper{
+					Dispenser:   segment.NewDispenser(),
+					warnings:    &warnings,
+					matcherDefs: matcherDefs,
+				})
+				if err != nil {
+					return nil, warnings, fmt.Errorf("parsing caddyfile tokens for '%s': %v", dir, err)
+				}
+				for _, result := range results {
+					result.directive = dir
+					sb.pile[result.Class] = append(sb.pile[result.Class], result)
+				}
+			} else {
+				// TODO: this should be an error
+				log.Printf("%s not registered", dir)
+			}
+		}
+	}
+
 	// map
-	sbmap, err := st.mapAddressToServerBlocks(originalServerBlocks)
+	sbmap, err := st.mapAddressToServerBlocks(serverBlocks)
 	if err != nil {
 		return nil, warnings, err
 	}
@@ -63,6 +97,22 @@ func (st ServerType) Setup(originalServerBlocks []caddyfile.ServerBlock,
 	// reduce
 	pairings := st.consolidateAddrMappings(sbmap)
 
+	// TODO: shorthand placeholders
+	// for _, p := range pairings {
+	// 	for _, sblock := range p.serverBlocks {
+	// 		for _, tokens := range sblock.Tokens {
+	// 			for i := 0; i < len(tokens); i++ {
+	// 				switch tokens[i].Text {
+	// 				case "{uri}":
+	// 					tokens[i].Text = "{http.request.uri}"
+	// 				case "{path}":
+	// 					tokens[i].Text = "{http.request.uri.path}"
+	// 				}
+	// 			}
+	// 		}
+	// 	}
+	// }
+
 	// each pairing of listener addresses to list of server
 	// blocks is basically a server definition
 	servers, err := st.serversFromPairings(pairings, &warnings)
@@ -81,45 +131,33 @@ func (st ServerType) Setup(originalServerBlocks []caddyfile.ServerBlock,
 	tlsApp := caddytls.TLS{Certificates: make(map[string]json.RawMessage)}
 	for _, p := range pairings {
 		for _, sblock := range p.serverBlocks {
-			if tkns, ok := sblock.Tokens["tls"]; ok {
-				// extract all unique hostnames from the server block
-				// keys, then convert to a slice for use in the TLS app
-				hostMap := make(map[string]struct{})
-				for _, sblockKey := range sblock.Keys {
-					addr, err := standardizeAddress(sblockKey)
-					if err != nil {
-						return nil, warnings, fmt.Errorf("parsing server block key: %v", err)
-					}
-					hostMap[addr.Host] = struct{}{}
-				}
-				sblockHosts := make([]string, 0, len(hostMap))
-				for host := range hostMap {
-					sblockHosts = append(sblockHosts, host)
-				}
-
-				// parse tokens to get ACME manager config
-				acmeMgr, err := st.parseTLSAutomationManager(caddyfile.NewDispenser("Caddyfile", tkns))
+			// tls automation policies
+			if mmVals, ok := sblock.pile["tls.automation_manager"]; ok {
+				for _, mmVal := range mmVals {
+					mm := mmVal.Value.(caddytls.ManagerMaker)
+					sblockHosts, err := st.autoHTTPSHosts(sblock)
 					if err != nil {
 						return nil, warnings, err
 					}
-
 					tlsApp.Automation.Policies = append(tlsApp.Automation.Policies, caddytls.AutomationPolicy{
 						Hosts:         sblockHosts,
-					ManagementRaw: caddyconfig.JSONModuleObject(acmeMgr, "module", "acme", &warnings),
+						ManagementRaw: caddyconfig.JSONModuleObject(mm, "module", mm.(caddy.Module).CaddyModule().ID(), &warnings),
 					})
-
-				// parse tokens to get certificates to be loaded manually
-				certLoaders, err := st.parseTLSCerts(caddyfile.NewDispenser("Caddyfile", tkns))
-				if err != nil {
-					return nil, nil, err
 				}
-				for loaderName, loader := range certLoaders {
+			}
+
+			// tls certificate loaders
+			if clVals, ok := sblock.pile["tls.certificate_loader"]; ok {
+				for _, clVal := range clVals {
+					loader := clVal.Value.(caddytls.CertificateLoader)
+					loaderName := caddy.GetModuleName(loader)
 					tlsApp.Certificates[loaderName] = caddyconfig.JSON(loader, &warnings)
 				}
-
 			}
 		}
 	}
+	// consolidate automation policies that are the exact same
+	tlsApp.Automation.Policies = consolidateAutomationPolicies(tlsApp.Automation.Policies)
 
 	// annnd the top-level config, then we're done!
 	cfg := &caddy.Config{AppsRaw: make(map[string]json.RawMessage)}
@@ -140,10 +178,11 @@ func (st *ServerType) hostsFromServerBlockKeys(sb caddyfile.ServerBlock) ([]stri
 	// first get each unique hostname
 	hostMap := make(map[string]struct{})
 	for _, sblockKey := range sb.Keys {
-		addr, err := standardizeAddress(sblockKey)
+		addr, err := ParseAddress(sblockKey)
 		if err != nil {
 			return nil, fmt.Errorf("parsing server block key: %v", err)
 		}
+		addr = addr.Normalize()
 		hostMap[addr.Host] = struct{}{}
 	}
 
@@ -167,59 +206,40 @@ func (st *ServerType) serversFromPairings(pairings []sbAddrAssociation, warnings
 		}
 
 		for _, sblock := range p.serverBlocks {
-			matcherSetsEnc, err := st.compileEncodedMatcherSets(sblock)
+			matcherSetsEnc, err := st.compileEncodedMatcherSets(sblock.block)
 			if err != nil {
-				return nil, fmt.Errorf("server block %v: compiling matcher sets: %v", sblock.Keys, err)
-			}
-
-			// extract matcher definitions
-			d := caddyfile.NewDispenser("Caddyfile", sblock.Tokens["matcher"])
-			matcherDefs, err := st.parseMatcherDefinitions(d)
-			if err != nil {
-				return nil, err
+				return nil, fmt.Errorf("server block %v: compiling matcher sets: %v", sblock.block.Keys, err)
 			}
 
+			// if there are user-defined variables, then siteVarSubroute will
+			// wrap the handlerSubroute; otherwise handlerSubroute will be the
+			// site's primary subroute.
 			siteVarSubroute, handlerSubroute := new(caddyhttp.Subroute), new(caddyhttp.Subroute)
 
-			// built-in directives
+			// tls: connection policies and toggle auto HTTPS
 
-			// root: path to root of site
-			if tkns, ok := sblock.Tokens["root"]; ok {
-				routes, err := st.parseRoot(tkns, matcherDefs, warnings)
+			autoHTTPSQualifiedHosts, err := st.autoHTTPSHosts(sblock)
 			if err != nil {
 				return nil, err
 			}
-				siteVarSubroute.Routes = append(siteVarSubroute.Routes, routes...)
-			}
-
-			// tls: off and conn policies
-			if tkns, ok := sblock.Tokens["tls"]; ok {
-				// get the hosts for this server block...
-				hosts, err := st.hostsFromServerBlockKeys(sblock)
-				if err != nil {
-					return nil, err
-				}
-
-				// ...and of those, which ones qualify for auto HTTPS
-				var autoHTTPSQualifiedHosts []string
-				for _, h := range hosts {
-					if certmagic.HostQualifies(h) {
-						autoHTTPSQualifiedHosts = append(autoHTTPSQualifiedHosts, h)
-					}
-				}
-
-				if len(tkns) == 2 && tkns[1].Text == "off" {
+			if _, ok := sblock.pile["tls.off"]; ok {
 				// tls off: disable TLS (and automatic HTTPS) for server block's names
 				if srv.AutoHTTPS == nil {
 					srv.AutoHTTPS = new(caddyhttp.AutoHTTPSConfig)
 				}
 				srv.AutoHTTPS.Skip = append(srv.AutoHTTPS.Skip, autoHTTPSQualifiedHosts...)
-				} else {
+			} else if cpVals, ok := sblock.pile["tls.connection_policy"]; ok {
 				// tls connection policies
-					cp, err := st.parseTLSConnPolicy(caddyfile.NewDispenser("Caddyfile", tkns))
+				for _, cpVal := range cpVals {
+					cp := cpVal.Value.(*caddytls.ConnectionPolicy)
+					// only create if there is a non-empty policy
+					if !reflect.DeepEqual(cp, new(caddytls.ConnectionPolicy)) {
+						// make sure the policy covers all hostnames from the block
+						hosts, err := st.hostsFromServerBlockKeys(sblock.block)
 						if err != nil {
 							return nil, err
 						}
+
 						// TODO: are matchers needed if every hostname of the config is matched?
 						cp.Matchers = map[string]json.RawMessage{
 							"sni": caddyconfig.JSON(hosts, warnings), // make sure to match all hosts, not just auto-HTTPS-qualified ones
@@ -227,61 +247,34 @@ func (st *ServerType) serversFromPairings(pairings []sbAddrAssociation, warnings
 						srv.TLSConnPolicies = append(srv.TLSConnPolicies, cp)
 					}
 				}
+				// TODO: consolidate equal conn policies
+			}
+
+			// vars: special routes that will have to wrap the normal handlers
+			// so that these variables can be used across their matchers too
+			for _, cfgVal := range sblock.pile["var"] {
+				siteVarSubroute.Routes = append(siteVarSubroute.Routes, cfgVal.Value.(caddyhttp.Route))
+			}
 
 			// set up each handler directive
-			for _, dirBucket := range directiveBuckets() {
-				for dir := range dirBucket {
-					// keep in mind that multiple occurrences of the directive may appear here
-					tkns, ok := sblock.Tokens[dir]
-					if !ok {
-						continue
+			dirRoutes := sblock.pile["route"]
+			// TODO: The ordering here depends on... if there is a list of
+			// directives to use, then sort by that, otherwise just use in
+			// the order they appear in the slice (which is the order they
+			// appeared in the Caddyfile)
+			sortByList := true
+			if sortByList {
+				dirPositions := make(map[string]int)
+				for i, dir := range defaultDirectiveOrder {
+					dirPositions[dir] = i
 				}
-
-					// extract matcher sets from matcher tokens, if any
-					matcherSetsMap, err := st.tokensToMatcherSets(tkns, matcherDefs, warnings)
-
-					mod, err := caddy.GetModule("http.handlers." + dir)
-					if err != nil {
-						return nil, fmt.Errorf("getting handler module '%s': %v", mod.Name, err)
+				sort.SliceStable(dirRoutes, func(i, j int) bool {
+					iDir, jDir := dirRoutes[i].directive, dirRoutes[j].directive
+					return dirPositions[iDir] < dirPositions[jDir]
+				})
 			}
-
-					// the tokens have been divided by matcher set for us,
-					// so iterate each one and set them up
-					for _, mst := range matcherSetsMap {
-						unm, ok := mod.New().(caddyfile.Unmarshaler)
-						if !ok {
-							return nil, fmt.Errorf("handler module '%s' is not a Caddyfile unmarshaler", mod.Name)
-						}
-						err = unm.UnmarshalCaddyfile(caddyfile.NewDispenser(d.File(), mst.tokens))
-						if err != nil {
-							return nil, err
-						}
-						handler, ok := unm.(caddyhttp.MiddlewareHandler)
-						if !ok {
-							return nil, fmt.Errorf("handler module '%s' does not implement caddyhttp.MiddlewareHandler interface", mod.Name)
-						}
-
-						route := caddyhttp.Route{
-							Handle: []json.RawMessage{
-								caddyconfig.JSONModuleObject(handler, "handler", dir, warnings),
-							},
-						}
-						if mst.matcherSet != nil {
-							route.MatcherSets = []map[string]json.RawMessage{mst.matcherSet}
-						}
-						handlerSubroute.Routes = append(handlerSubroute.Routes, route)
-					}
-
-				}
-			}
-
-			// redir: static responses that redirect
-			if tkns, ok := sblock.Tokens["redir"]; ok {
-				routes, err := st.parseRedir(tkns, matcherDefs, warnings)
-				if err != nil {
-					return nil, err
-				}
-				handlerSubroute.Routes = append(handlerSubroute.Routes, routes...)
+			for _, r := range dirRoutes {
+				handlerSubroute.Routes = append(handlerSubroute.Routes, r.Value.(caddyhttp.Route))
 			}
 
 			// the route that contains the site's handlers will
@@ -298,7 +291,7 @@ func (st *ServerType) serversFromPairings(pairings []sbAddrAssociation, warnings
 				siteSubroute.Routes = append(
 					siteVarSubroute.Routes,
 					caddyhttp.Route{
-						Handle: []json.RawMessage{
+						HandlersRaw: []json.RawMessage{
 							caddyconfig.JSONModuleObject(subSubRoute, "handler", "subroute", warnings),
 						},
 					},
@@ -308,8 +301,8 @@ func (st *ServerType) serversFromPairings(pairings []sbAddrAssociation, warnings
 			siteSubroute.Routes = consolidateRoutes(siteSubroute.Routes)
 
 			srv.Routes = append(srv.Routes, caddyhttp.Route{
-				MatcherSets: matcherSetsEnc,
-				Handle: []json.RawMessage{
+				MatcherSetsRaw: matcherSetsEnc,
+				HandlersRaw: []json.RawMessage{
 					caddyconfig.JSONModuleObject(siteSubroute, "handler", "subroute", warnings),
 				},
 			})
@@ -323,16 +316,32 @@ func (st *ServerType) serversFromPairings(pairings []sbAddrAssociation, warnings
 	return servers, nil
 }
 
+func (st ServerType) autoHTTPSHosts(sb serverBlock) ([]string, error) {
+	// get the hosts for this server block...
+	hosts, err := st.hostsFromServerBlockKeys(sb.block)
+	if err != nil {
+		return nil, err
+	}
+	// ...and of those, which ones qualify for auto HTTPS
+	var autoHTTPSQualifiedHosts []string
+	for _, h := range hosts {
+		if certmagic.HostQualifies(h) {
+			autoHTTPSQualifiedHosts = append(autoHTTPSQualifiedHosts, h)
+		}
+	}
+	return autoHTTPSQualifiedHosts, nil
+}
+
 // consolidateRoutes combines routes with the same properties
 // (same matchers, same Terminal and Group settings) for a
 // cleaner overall output.
 func consolidateRoutes(routes caddyhttp.RouteList) caddyhttp.RouteList {
 	for i := 0; i < len(routes)-1; i++ {
-		if reflect.DeepEqual(routes[i].MatcherSets, routes[i+1].MatcherSets) &&
+		if reflect.DeepEqual(routes[i].MatcherSetsRaw, routes[i+1].MatcherSetsRaw) &&
 			routes[i].Terminal == routes[i+1].Terminal &&
 			routes[i].Group == routes[i+1].Group {
 			// keep the handlers in the same order, then splice out repetitive route
-			routes[i].Handle = append(routes[i].Handle, routes[i+1].Handle...)
+			routes[i].HandlersRaw = append(routes[i].HandlersRaw, routes[i+1].HandlersRaw...)
 			routes = append(routes[:i+1], routes[i+2:]...)
 			i--
 		}
@@ -340,53 +349,26 @@ func consolidateRoutes(routes caddyhttp.RouteList) caddyhttp.RouteList {
 	return routes
 }
 
-func (st *ServerType) tokensToMatcherSets(
-	tkns []caddyfile.Token,
-	matcherDefs map[string]map[string]json.RawMessage,
-	warnings *[]caddyconfig.Warning,
-) (map[string]matcherSetAndTokens, error) {
-	m := make(map[string]matcherSetAndTokens)
-
-	for len(tkns) > 0 {
-		d := caddyfile.NewDispenser("Caddyfile", tkns)
-		d.Next() // consume directive token
-
-		// look for matcher; it should be the next argument
-		var matcherToken caddyfile.Token
-		var matcherSet map[string]json.RawMessage
-		if d.NextArg() {
-			var ok bool
-			var err error
-			matcherSet, ok, err = st.matcherSetFromMatcherToken(d.Token(), matcherDefs, warnings)
-			if err != nil {
-				return nil, err
+// consolidateAutomationPolicies combines automation policies that are the same,
+// for a cleaner overall output.
+func consolidateAutomationPolicies(aps []caddytls.AutomationPolicy) []caddytls.AutomationPolicy {
+	for i := 0; i < len(aps); i++ {
+		for j := 0; j < len(aps); j++ {
+			if j == i {
+				continue
 			}
-			if ok {
-				// found a matcher; save it, then splice it out
-				// since we don't want to parse it again
-				matcherToken = d.Token()
-				tkns = d.Delete()
+			if reflect.DeepEqual(aps[i].ManagementRaw, aps[j].ManagementRaw) {
+				aps[i].Hosts = append(aps[i].Hosts, aps[j].Hosts...)
 			}
-			d.RemainingArgs() // advance to end of line
-		}
-		for d.NextBlock() {
-			// skip entire block including any nested blocks; all
-			// we care about is accessing next directive occurrence
-			for d.Nested() {
-				d.NextBlock()
+			aps = append(aps[:j], aps[j+1:]...)
+			i--
+			break
 		}
 	}
-		end := d.Cursor() + 1
-		m[matcherToken.Text] = matcherSetAndTokens{
-			matcherSet: matcherSet,
-			tokens:     append(m[matcherToken.Text].tokens, tkns[:end]...),
-		}
-		tkns = tkns[end:]
-	}
-	return m, nil
+	return aps
 }
 
-func (st *ServerType) matcherSetFromMatcherToken(
+func matcherSetFromMatcherToken(
 	tkn caddyfile.Token,
 	matcherDefs map[string]map[string]json.RawMessage,
 	warnings *[]caddyconfig.Warning,
@@ -424,10 +406,11 @@ func (st *ServerType) compileEncodedMatcherSets(sblock caddyfile.ServerBlock) ([
 	var matcherPairs []*hostPathPair
 
 	for _, key := range sblock.Keys {
-		addr, err := standardizeAddress(key)
+		addr, err := ParseAddress(key)
 		if err != nil {
 			return nil, fmt.Errorf("server block %v: parsing and standardizing address '%s': %v", sblock.Keys, key, err)
 		}
+		addr = addr.Normalize()
 
 		// choose a matcher pair that should be shared by this
 		// server block; if none exists yet, create one
@@ -504,14 +487,6 @@ func encodeMatcherSet(matchers map[string]caddyhttp.RequestMatcher) (map[string]
 	return msEncoded, nil
 }
 
-// HandlerDirective implements a directive for an HTTP handler,
-// in that it can unmarshal its own configuration from Caddyfile
-// tokens and also specify which directive bucket it belongs in.
-type HandlerDirective interface {
-	caddyfile.Unmarshaler
-	Bucket() int
-}
-
 // tryInt tries to convert str to an integer. If it fails, it downgrades
 // the error to a warning and returns 0.
 func tryInt(str string, warnings *[]caddyconfig.Warning) int {
@@ -535,7 +510,7 @@ type matcherSetAndTokens struct {
 // served on those addresses.
 type sbAddrAssociation struct {
 	addresses    []string
-	serverBlocks []caddyfile.ServerBlock
+	serverBlocks []serverBlock
 }
 
 // Interface guard

context.go

@@ -99,11 +99,16 @@ func (ctx Context) LoadModule(name string, rawMsg json.RawMessage) (interface{},
 		return nil, fmt.Errorf("module '%s' has no constructor", mod.Name)
 	}
 
-	val := mod.New()
+	val := mod.New().(interface{})
 
-	// value must be a pointer for unmarshaling into concrete type
+	// value must be a pointer for unmarshaling into concrete type, even if
+	// the module's concrete type is a slice or map; New() *should* return
+	// a pointer, otherwise unmarshaling errors or panics will occur
 	if rv := reflect.ValueOf(val); rv.Kind() != reflect.Ptr {
-		val = reflect.New(rv.Type()).Elem().Addr().Interface()
+		log.Printf("[WARNING] ModuleInfo.New() for module '%s' did not return a pointer,"+
+			" so we are using reflection to make a pointer instead; please fix this by"+
+			" using new(Type) or &Type notation in your module's New() function.", name)
+		val = reflect.New(rv.Type()).Elem().Addr().Interface().(Module)
 	}
 
 	// fill in its config only if there is a config to fill in

modules.go

@@ -23,48 +23,76 @@ import (
 	"sync"
 )
 
-// Module represents a Caddy module.
-type Module struct {
+// Module is a type that is used as a Caddy module.
+type Module interface {
+	// This method indicates the type is a Caddy
+	// module. The returned ModuleInfo must have
+	// both a name and a constructor function.
+	// This method must not have any side-effects.
+	CaddyModule() ModuleInfo
+}
+
+// ModuleInfo represents a registered Caddy module.
+type ModuleInfo struct {
 	// Name is the full name of the module. It
 	// must be unique and properly namespaced.
 	Name string
 
-	// New returns a new, empty instance of
-	// the module's type. The host module
-	// which loads this module will likely
-	// invoke methods on the returned value.
-	// It must return a pointer; if not, it
-	// is converted into one.
-	New func() interface{}
-}
-
-// ID returns a module's ID, which is the
-// last element of its name.
-func (m Module) ID() string {
-	if m.Name == "" {
-		return ""
-	}
-	parts := strings.Split(m.Name, ".")
-	return parts[len(parts)-1]
+	// New returns a pointer to a new, empty
+	// instance of the module's type. The host
+	// module which instantiates this module will
+	// likely type-assert and invoke methods on
+	// the returned value. This function must not
+	// have any side-effects.
+	New func() Module
 }
 
 // Namespace returns the module's namespace (scope)
 // which is all but the last element of its name.
-func (m Module) Namespace() string {
-	lastDot := strings.LastIndex(m.Name, ".")
+// If there is no explicit namespace in the name,
+// the whole name is considered the namespace.
+func (mi ModuleInfo) Namespace() string {
+	lastDot := strings.LastIndex(mi.Name, ".")
 	if lastDot < 0 {
-		return ""
+		return mi.Name
 	}
-	return m.Name[:lastDot]
+	return mi.Name[:lastDot]
 }
 
-func (m Module) String() string { return m.Name }
+// ID returns a module's ID, which is the
+// last element of its name.
+func (mi ModuleInfo) ID() string {
+	if mi.Name == "" {
+		return ""
+	}
+	parts := strings.Split(mi.Name, ".")
+	return parts[len(parts)-1]
+}
 
-// RegisterModule registers a module. Modules must call
-// this function in the init phase of runtime.
-func RegisterModule(mod Module) error {
-	if mod.Name == "caddy" {
-		return fmt.Errorf("modules cannot be named 'caddy'")
+func (mi ModuleInfo) String() string { return mi.Name }
+
+// RegisterModule registers a module by receiving a
+// plain/empty value of the module. For registration to
+// be properly recorded, this should be called in the
+// init phase of runtime. Typically, the module package
+// will do this as a side-effect of being imported.
+// This function returns an error if the module's info
+// is incomplete or invalid, or if the module is
+// already registered.
+func RegisterModule(instance Module) error {
+	mod := instance.CaddyModule()
+
+	if mod.Name == "" {
+		return fmt.Errorf("missing ModuleInfo.Name")
+	}
+	if mod.Name == "caddy" || mod.Name == "admin" {
+		return fmt.Errorf("module name '%s' is reserved", mod.Name)
+	}
+	if mod.New == nil {
+		return fmt.Errorf("missing ModuleInfo.New")
+	}
+	if val := mod.New(); val == nil {
+		return fmt.Errorf("ModuleInfo.New must return a non-nil module instance")
 	}
 
 	modulesMu.Lock()
@@ -77,18 +105,27 @@ func RegisterModule(mod Module) error {
 	return nil
 }
 
-// GetModule returns a module by its full name.
-func GetModule(name string) (Module, error) {
+// GetModule returns module information from its full name.
+func GetModule(name string) (ModuleInfo, error) {
 	modulesMu.Lock()
 	defer modulesMu.Unlock()
-
 	m, ok := modules[name]
 	if !ok {
-		return Module{}, fmt.Errorf("module not registered: %s", name)
+		return ModuleInfo{}, fmt.Errorf("module not registered: %s", name)
 	}
 	return m, nil
 }
 
+// GetModuleName returns a module's name from an instance of its value.
+// If the value is not a module, an empty name will be returned.
+func GetModuleName(instance interface{}) string {
+	var name string
+	if mod, ok := instance.(Module); ok {
+		name = mod.CaddyModule().Name
+	}
+	return name
+}
+
 // GetModules returns all modules in the given scope/namespace.
 // For example, a scope of "foo" returns modules named "foo.bar",
 // "foo.loo", but not "bar", "foo.bar.loo", etc. An empty scope
@@ -98,7 +135,7 @@ func GetModule(name string) (Module, error) {
 //
 // Because modules are registered to a map, the returned slice
 // will be sorted to keep it deterministic.
-func GetModules(scope string) []Module {
+func GetModules(scope string) []ModuleInfo {
 	modulesMu.Lock()
 	defer modulesMu.Unlock()
 
@@ -110,7 +147,7 @@ func GetModules(scope string) []Module {
 		scopeParts = []string{}
 	}
 
-	var mods []Module
+	var mods []ModuleInfo
 iterateModules:
 	for name, m := range modules {
 		modParts := strings.Split(name, ".")
@@ -223,6 +260,6 @@ func strictUnmarshalJSON(data []byte, v interface{}) error {
 }
 
 var (
-	modules   = make(map[string]Module)
+	modules   = make(map[string]ModuleInfo)
 	modulesMu sync.Mutex
 )

modules/caddyhttp/caddyhttp.go

@@ -37,10 +37,7 @@ import (
 func init() {
 	weakrand.Seed(time.Now().UnixNano())
 
-	err := caddy.RegisterModule(caddy.Module{
-		Name: "http",
-		New:  func() interface{} { return new(App) },
-	})
+	err := caddy.RegisterModule(App{})
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -58,6 +55,14 @@ type App struct {
 	ctx caddy.Context
 }
 
+// CaddyModule returns the Caddy module information.
+func (App) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http",
+		New:  func() caddy.Module { return new(App) },
+	}
+}
+
 // Provision sets up the app.
 func (app *App) Provision(ctx caddy.Context) error {
 	app.ctx = ctx
@@ -227,7 +232,7 @@ func (app *App) automaticHTTPS() error {
 		// find all qualifying domain names, de-duplicated
 		domainSet := make(map[string]struct{})
 		for _, route := range srv.Routes {
-			for _, matcherSet := range route.matcherSets {
+			for _, matcherSet := range route.MatcherSets {
 				for _, m := range matcherSet {
 					if hm, ok := m.(*MatchHost); ok {
 						for _, d := range *hm {
@@ -331,13 +336,13 @@ func (app *App) automaticHTTPS() error {
 				redirTo += "{http.request.uri}"
 
 				redirRoutes = append(redirRoutes, Route{
-					matcherSets: []MatcherSet{
+					MatcherSets: []MatcherSet{
 						{
 							MatchProtocol("http"),
 							MatchHost(domains),
 						},
 					},
-					handlers: []MiddlewareHandler{
+					Handlers: []MiddlewareHandler{
 						StaticResponse{
 							StatusCode: WeakString(strconv.Itoa(http.StatusTemporaryRedirect)), // TODO: use permanent redirect instead
 							Headers: http.Header{

modules/caddyhttp/caddylog/log.go

@@ -24,10 +24,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.log",
-		New:  func() interface{} { return new(Log) },
-	})
+	caddy.RegisterModule(Log{})
 }
 
 // Log implements a simple logging middleware.
@@ -36,6 +33,14 @@ type Log struct {
 	counter  int
 }
 
+// CaddyModule returns the Caddy module information.
+func (Log) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.log",
+		New:  func() caddy.Module { return new(Log) },
+	}
+}
+
 func (l *Log) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	start := time.Now()
 

modules/caddyhttp/encode/brotli/brotli.go

@@ -19,16 +19,13 @@ import (
 	"strconv"
 
 	"github.com/andybalholm/brotli"
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.encoders.brotli",
-		New:  func() interface{} { return new(Brotli) },
-	})
+	caddy.RegisterModule(Brotli{})
 }
 
 // Brotli can create brotli encoders. Note that brotli
@@ -37,6 +34,14 @@ type Brotli struct {
 	Quality *int `json:"quality,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Brotli) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.encoders.brotli",
+		New:  func() caddy.Module { return new(Brotli) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens.
 func (b *Brotli) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {

modules/caddyhttp/encode/caddyfile.go

@@ -22,8 +22,25 @@ import (
 	"github.com/caddyserver/caddy/v2/caddyconfig"
 	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("encode", parseCaddyfile)
+}
+
+// TODO: This is a good example of why UnmarshalCaddyfile is still a good idea... hmm.
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	enc := new(Encode)
+	err := enc.UnmarshalCaddyfile(h.Dispenser)
+	if err != nil {
+		return nil, err
+	}
+	return enc, nil
+}
+
+// TODO: Keep UnmarshalCaddyfile pattern?
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     encode [<matcher>] <formats...> {
@@ -78,8 +95,5 @@ func (enc *Encode) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	return nil
 }
 
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (enc Encode) Bucket() int { return 3 }
-
 // Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Encode)(nil)
+var _ caddyfile.Unmarshaler = (*Encode)(nil)

modules/caddyhttp/encode/encode.go

@@ -35,10 +35,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.encode",
-		New:  func() interface{} { return new(Encode) },
-	})
+	caddy.RegisterModule(Encode{})
 }
 
 // Encode is a middleware which can encode responses.
@@ -50,6 +47,14 @@ type Encode struct {
 	writerPools map[string]*sync.Pool // TODO: these pools do not get reused through config reloads...
 }
 
+// CaddyModule returns the Caddy module information.
+func (Encode) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.encode",
+		New:  func() caddy.Module { return new(Encode) },
+	}
+}
+
 // Provision provisions enc.
 func (enc *Encode) Provision(ctx caddy.Context) error {
 	for modName, rawMsg := range enc.EncodingsRaw {

modules/caddyhttp/encode/gzip/gzip.go

@@ -20,16 +20,13 @@ import (
 	"fmt"
 	"strconv"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.encoders.gzip",
-		New:  func() interface{} { return new(Gzip) },
-	})
+	caddy.RegisterModule(Gzip{})
 }
 
 // Gzip can create gzip encoders.
@@ -37,6 +34,14 @@ type Gzip struct {
 	Level int `json:"level,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Gzip) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.encoders.gzip",
+		New:  func() caddy.Module { return new(Gzip) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens.
 func (g *Gzip) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {

modules/caddyhttp/encode/zstd/zstd.go

@@ -15,22 +15,27 @@
 package caddyzstd
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
 	"github.com/klauspost/compress/zstd"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.encoders.zstd",
-		New:  func() interface{} { return new(Zstd) },
-	})
+	caddy.RegisterModule(Zstd{})
 }
 
 // Zstd can create Zstandard encoders.
 type Zstd struct{}
 
+// CaddyModule returns the Caddy module information.
+func (Zstd) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.encoders.zstd",
+		New:  func() caddy.Module { return new(Zstd) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens.
 func (z *Zstd) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	return nil

modules/caddyhttp/fileserver/caddyfile.go

@@ -15,59 +15,58 @@
 package fileserver
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
+	"encoding/json"
+
+	"github.com/caddyserver/caddy/modules/caddyhttp/rewrite"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
-//
-//     file_server [<matcher>] [browse] {
-//         hide <files...>
-//         index <files...>
-//         browse [<template_file>]
-//         root <path>
-//     }
-//
-// If browse is given on the first line, it can't be used in the block also.
-// The default root is the one given by the root directive.
-func (fsrv *FileServer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		args := d.RemainingArgs()
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("file_server", parseCaddyfile)
+	httpcaddyfile.RegisterDirective("try_files", parseTryFiles)
+}
+
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	var fsrv FileServer
+
+	for h.Next() {
+		args := h.RemainingArgs()
 		switch len(args) {
 		case 0:
 		case 1:
 			if args[0] != "browse" {
-				return d.ArgErr()
+				return nil, h.ArgErr()
 			}
 			fsrv.Browse = new(Browse)
 		default:
-			return d.ArgErr()
+			return nil, h.ArgErr()
 		}
 
-		for d.NextBlock() {
-			switch d.Val() {
+		for h.NextBlock() {
+			switch h.Val() {
 			case "hide":
-				fsrv.Hide = d.RemainingArgs()
+				fsrv.Hide = h.RemainingArgs()
 				if len(fsrv.Hide) == 0 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "index":
-				fsrv.IndexNames = d.RemainingArgs()
+				fsrv.IndexNames = h.RemainingArgs()
 				if len(fsrv.Hide) == 0 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "root":
-				if !d.Args(&fsrv.Root) {
-					return d.ArgErr()
+				if !h.Args(&fsrv.Root) {
+					return nil, h.ArgErr()
 				}
 			case "browse":
 				if fsrv.Browse != nil {
-					return d.Err("browsing is already configured")
+					return nil, h.Err("browsing is already configured")
 				}
 				fsrv.Browse = new(Browse)
-				d.Args(&fsrv.Browse.TemplateFile)
+				h.Args(&fsrv.Browse.TemplateFile)
 			default:
-				return d.Errf("unknown subdirective '%s'", d.Val())
+				return nil, h.Errf("unknown subdirective '%s'", h.Val())
 			}
 		}
 	}
@@ -77,11 +76,29 @@ func (fsrv *FileServer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 		fsrv.Root = "{http.var.root}"
 	}
 
-	return nil
+	return &fsrv, nil
 }
 
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (fsrv FileServer) Bucket() int { return 7 }
+func parseTryFiles(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error) {
+	if !h.Next() {
+		return nil, h.ArgErr()
+	}
 
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*FileServer)(nil)
+	try := h.RemainingArgs()
+	if len(try) == 0 {
+		return nil, h.ArgErr()
+	}
+
+	handler := rewrite.Rewrite{
+		URI: "{http.matchers.file.relative}{http.request.uri.query}",
+	}
+
+	matcherSet := map[string]json.RawMessage{
+		"file": h.JSON(MatchFile{
+			Root:     "{http.var.root}",
+			TryFiles: try,
+		}, nil),
+	}
+
+	return h.NewRoute(matcherSet, handler), nil
+}

modules/caddyhttp/fileserver/matcher.go

@@ -20,16 +20,13 @@ import (
 	"os"
 	"time"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.file",
-		New:  func() interface{} { return new(MatchFile) },
-	})
+	caddy.RegisterModule(MatchFile{})
 }
 
 // MatchFile is an HTTP request matcher that can match
@@ -52,12 +49,20 @@ type MatchFile struct {
 	TryPolicy string `json:"try_policy,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchFile) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.file",
+		New:  func() caddy.Module { return new(MatchFile) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the matcher from Caddyfile tokens. Syntax:
 //
 //     file {
 //         root <path>
 //         try_files <files...>
-//         try_policy <first_exist|smallest_size|largest_size|most_recent_modified>
+//         try_policy first_exist|smallest_size|largest_size|most_recent_modified
 //     }
 //
 func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
@@ -82,6 +87,9 @@ func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 			}
 		}
 	}
+	if m.Root == "" {
+		m.Root = "{http.var.root}"
+	}
 	return nil
 }
 
@@ -121,7 +129,7 @@ func (m MatchFile) Match(r *http.Request) bool {
 func (m MatchFile) selectFile(r *http.Request) (rel, abs string, matched bool) {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 
-	root := repl.ReplaceAll(m.Root, "")
+	root := repl.ReplaceAll(m.Root, ".")
 
 	// if list of files to try was omitted entirely,
 	// assume URL path

modules/caddyhttp/fileserver/staticfiles.go

@@ -36,10 +36,7 @@ import (
 func init() {
 	weakrand.Seed(time.Now().UnixNano())
 
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.file_server",
-		New:  func() interface{} { return new(FileServer) },
-	})
+	caddy.RegisterModule(FileServer{})
 }
 
 // FileServer implements a static file server responder for Caddy.
@@ -50,6 +47,14 @@ type FileServer struct {
 	Browse     *Browse  `json:"browse,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (FileServer) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.file_server",
+		New:  func() caddy.Module { return new(FileServer) },
+	}
+}
+
 // Provision sets up the static files responder.
 func (fsrv *FileServer) Provision(ctx caddy.Context) error {
 	if fsrv.IndexNames == nil {

modules/caddyhttp/headers/caddyfile.go

@@ -18,11 +18,15 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("headers", parseCaddyfile)
+}
+
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     headers [<matcher>] [[+|-]<field> <value>] {
 //         [+][<field>] [<value>]
@@ -31,62 +35,57 @@ import (
 //
 // Either a block can be opened or a single header field can be configured
 // in the first line, but not both in the same directive.
-func (h *Headers) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	hdr := new(Headers)
+	for h.Next() {
 		// first see if headers are in the initial line
 		var hasArgs bool
-		if d.NextArg() {
+		if h.NextArg() {
 			hasArgs = true
-			field := d.Val()
-			d.NextArg()
-			value := d.Val()
-			h.processCaddyfileLine(field, value)
+			field := h.Val()
+			h.NextArg()
+			value := h.Val()
+			processCaddyfileLine(hdr, field, value)
 		}
 
 		// if not, they should be in a block
-		for d.NextBlock() {
+		for h.NextBlock() {
 			if hasArgs {
-				return d.Err("cannot specify headers in both arguments and block")
+				return nil, h.Err("cannot specify headers in both arguments and block")
 			}
-			field := d.Val()
+			field := h.Val()
 			var value string
-			if d.NextArg() {
-				value = d.Val()
+			if h.NextArg() {
+				value = h.Val()
 			}
-			h.processCaddyfileLine(field, value)
+			processCaddyfileLine(hdr, field, value)
 		}
 	}
-	return nil
+	return hdr, nil
 }
 
-func (h *Headers) processCaddyfileLine(field, value string) {
+func processCaddyfileLine(hdr *Headers, field, value string) {
 	if strings.HasPrefix(field, "+") {
-		if h.Response == nil {
-			h.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
+		if hdr.Response == nil {
+			hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
 		}
-		if h.Response.Add == nil {
-			h.Response.Add = make(http.Header)
+		if hdr.Response.Add == nil {
+			hdr.Response.Add = make(http.Header)
 		}
-		h.Response.Add.Set(field[1:], value)
+		hdr.Response.Add.Set(field[1:], value)
 	} else if strings.HasPrefix(field, "-") {
-		if h.Response == nil {
-			h.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
+		if hdr.Response == nil {
+			hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
 		}
-		h.Response.Delete = append(h.Response.Delete, field[1:])
-		h.Response.Deferred = true
+		hdr.Response.Delete = append(hdr.Response.Delete, field[1:])
+		hdr.Response.Deferred = true
 	} else {
-		if h.Response == nil {
-			h.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
+		if hdr.Response == nil {
+			hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
 		}
-		if h.Response.Set == nil {
-			h.Response.Set = make(http.Header)
+		if hdr.Response.Set == nil {
+			hdr.Response.Set = make(http.Header)
 		}
-		h.Response.Set.Set(field, value)
+		hdr.Response.Set.Set(field, value)
 	}
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (h Headers) Bucket() int { return 3 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Headers)(nil)

modules/caddyhttp/headers/headers.go

@@ -23,10 +23,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.headers",
-		New:  func() interface{} { return new(Headers) },
-	})
+	caddy.RegisterModule(Headers{})
 }
 
 // Headers is a middleware which can mutate HTTP headers.
@@ -35,6 +32,14 @@ type Headers struct {
 	Response *RespHeaderOps `json:"response,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Headers) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.headers",
+		New:  func() caddy.Module { return new(Headers) },
+	}
+}
+
 // HeaderOps defines some operations to
 // perform on HTTP headers.
 type HeaderOps struct {

modules/caddyhttp/markdown/markdown.go

@@ -28,16 +28,21 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.markdown",
-		New:  func() interface{} { return new(Markdown) },
-	})
+	caddy.RegisterModule(Markdown{})
 }
 
 // Markdown is a middleware for rendering a Markdown response body.
 type Markdown struct {
 }
 
+// CaddyModule returns the Caddy module information.
+func (Markdown) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.markdown",
+		New:  func() caddy.Module { return new(Markdown) },
+	}
+}
+
 func (m Markdown) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	buf := bufPool.Get().(*bytes.Buffer)
 	buf.Reset()

modules/caddyhttp/matchers.go

@@ -80,50 +80,25 @@ type (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
+	caddy.RegisterModule(MatchHost{})
+	caddy.RegisterModule(MatchPath{})
+	caddy.RegisterModule(MatchPathRE{})
+	caddy.RegisterModule(MatchMethod{})
+	caddy.RegisterModule(MatchQuery{})
+	caddy.RegisterModule(MatchHeader{})
+	caddy.RegisterModule(MatchHeaderRE{})
+	caddy.RegisterModule(new(MatchProtocol))
+	caddy.RegisterModule(MatchRemoteIP{})
+	caddy.RegisterModule(MatchNegate{})
+	caddy.RegisterModule(new(MatchStarlarkExpr))
+}
+
+// CaddyModule returns the Caddy module information.
+func (MatchHost) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
 		Name: "http.matchers.host",
-		New:  func() interface{} { return new(MatchHost) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.path",
-		New:  func() interface{} { return new(MatchPath) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.path_regexp",
-		New:  func() interface{} { return new(MatchPathRE) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.method",
-		New:  func() interface{} { return new(MatchMethod) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.query",
-		New:  func() interface{} { return new(MatchQuery) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.header",
-		New:  func() interface{} { return new(MatchHeader) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.header_regexp",
-		New:  func() interface{} { return new(MatchHeaderRE) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.protocol",
-		New:  func() interface{} { return new(MatchProtocol) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.remote_ip",
-		New:  func() interface{} { return new(MatchRemoteIP) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.not",
-		New:  func() interface{} { return new(MatchNegate) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.starlark_expr",
-		New:  func() interface{} { return new(MatchStarlarkExpr) },
-	})
+		New:  func() caddy.Module { return new(MatchHost) },
+	}
 }
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
@@ -165,6 +140,14 @@ outer:
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchPath) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.path",
+		New:  func() caddy.Module { return new(MatchPath) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchPath) Match(r *http.Request) bool {
 	for _, matchPath := range m {
@@ -186,19 +169,39 @@ func (m MatchPath) Match(r *http.Request) bool {
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchPath) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+	for d.Next() {
 		*m = d.RemainingArgs()
+	}
 	return nil
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchPathRE) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.path_regexp",
+		New:  func() caddy.Module { return new(MatchPathRE) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchPathRE) Match(r *http.Request) bool {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 	return m.MatchRegexp.Match(r.URL.Path, repl, "path_regexp")
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchMethod) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.method",
+		New:  func() caddy.Module { return new(MatchMethod) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchMethod) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+	for d.Next() {
 		*m = d.RemainingArgs()
+	}
 	return nil
 }
 
@@ -212,6 +215,14 @@ func (m MatchMethod) Match(r *http.Request) bool {
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchQuery) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.query",
+		New:  func() caddy.Module { return new(MatchQuery) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchQuery) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {
@@ -237,6 +248,14 @@ func (m MatchQuery) Match(r *http.Request) bool {
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchHeader) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.header",
+		New:  func() caddy.Module { return new(MatchHeader) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchHeader) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {
@@ -270,6 +289,14 @@ func (m MatchHeader) Match(r *http.Request) bool {
 	return true
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchHeaderRE) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.header_regexp",
+		New:  func() caddy.Module { return new(MatchHeaderRE) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchHeaderRE) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	if *m == nil {
@@ -319,6 +346,14 @@ func (m MatchHeaderRE) Validate() error {
 	return nil
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchProtocol) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.protocol",
+		New:  func() caddy.Module { return new(MatchProtocol) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchProtocol) Match(r *http.Request) bool {
 	switch string(m) {
@@ -334,14 +369,24 @@ func (m MatchProtocol) Match(r *http.Request) bool {
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchProtocol) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+	for d.Next() {
 		var proto string
 		if !d.Args(&proto) {
 			return d.Err("expected exactly one protocol")
 		}
 		*m = MatchProtocol(proto)
+	}
 	return nil
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchNegate) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.not",
+		New:  func() caddy.Module { return new(MatchNegate) },
+	}
+}
+
 // UnmarshalJSON unmarshals data into m's unexported map field.
 // This is done because we cannot embed the map directly into
 // the struct, but we need a struct because we need another
@@ -375,9 +420,19 @@ func (m MatchNegate) Match(r *http.Request) bool {
 	return !m.matchers.Match(r)
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchRemoteIP) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.remote_ip",
+		New:  func() caddy.Module { return new(MatchRemoteIP) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchRemoteIP) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+	for d.Next() {
 		m.Ranges = d.RemainingArgs()
+	}
 	return nil
 }
 
@@ -442,6 +497,14 @@ func (m MatchRemoteIP) Match(r *http.Request) bool {
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchStarlarkExpr) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.starlark_expr", // TODO: Rename to 'starlark'?
+		New:  func() caddy.Module { return new(MatchStarlarkExpr) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchStarlarkExpr) Match(r *http.Request) bool {
 	input := string(m)
@@ -513,8 +576,17 @@ func (mre *MatchRegexp) Match(input string, repl caddy.Replacer, scope string) b
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (mre *MatchRegexp) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	if !d.Args(&mre.Name, &mre.Pattern) {
-		return fmt.Errorf("missing arguments")
+	for d.Next() {
+		args := d.RemainingArgs()
+		switch len(args) {
+		case 1:
+			mre.Pattern = args[0]
+		case 2:
+			mre.Name = args[0]
+			mre.Pattern = args[1]
+		default:
+			return d.ArgErr()
+		}
 	}
 	return nil
 }

modules/caddyhttp/requestbody/requestbody.go

@@ -22,10 +22,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.request_body",
-		New:  func() interface{} { return new(RequestBody) },
-	})
+	caddy.RegisterModule(RequestBody{})
 }
 
 // RequestBody is a middleware for manipulating the request body.
@@ -33,6 +30,14 @@ type RequestBody struct {
 	MaxSize int64 `json:"max_size,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (RequestBody) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.request_body", // TODO: better name for this?
+		New:  func() caddy.Module { return new(RequestBody) },
+	}
+}
+
 func (rb RequestBody) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	if r.Body == nil {
 		return next.ServeHTTP(w, r)

modules/caddyhttp/reverseproxy/module.go

@@ -15,39 +15,39 @@
 package reverseproxy
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
-	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// Register caddy module.
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.reverse_proxy",
-		New:  func() interface{} { return new(LoadBalanced) },
-	})
+	caddy.RegisterModule(new(LoadBalanced))
+	httpcaddyfile.RegisterHandlerDirective("reverse_proxy", parseCaddyfile) // TODO: "proxy"?
 }
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+// CaddyModule returns the Caddy module information.
+func (*LoadBalanced) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.reverse_proxy",
+		New:  func() caddy.Module { return new(LoadBalanced) },
+	}
+}
+
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     proxy [<matcher>] <to>
 //
 // TODO: This needs to be finished. It definitely needs to be able to open a block...
-func (lb *LoadBalanced) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		allTo := d.RemainingArgs()
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	lb := new(LoadBalanced)
+	for h.Next() {
+		allTo := h.RemainingArgs()
 		if len(allTo) == 0 {
-			return d.ArgErr()
+			return nil, h.ArgErr()
 		}
 		for _, to := range allTo {
 			lb.Upstreams = append(lb.Upstreams, &UpstreamConfig{Host: to})
 		}
 	}
-	return nil
+	return lb, nil
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (*LoadBalanced) Bucket() int { return 7 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*LoadBalanced)(nil)

modules/caddyhttp/rewrite/caddyfile.go

@@ -15,24 +15,23 @@
 package rewrite
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("rewrite", parseCaddyfile)
+}
+
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     rewrite [<matcher>] <to>
 //
 // The <to> parameter becomes the new URI.
-func (rewr *Rewrite) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		rewr.URI = d.Val()
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	var rewr Rewrite
+	for h.Next() {
+		rewr.URI = h.Val()
 	}
-	return nil
+	return rewr, nil
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (rewr Rewrite) Bucket() int { return 1 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Rewrite)(nil)

modules/caddyhttp/rewrite/rewrite.go

@@ -24,10 +24,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.rewrite",
-		New:  func() interface{} { return new(Rewrite) },
-	})
+	caddy.RegisterModule(Rewrite{})
 }
 
 // Rewrite is a middleware which can rewrite HTTP requests.
@@ -37,6 +34,14 @@ type Rewrite struct {
 	Rehandle bool   `json:"rehandle,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Rewrite) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.rewrite",
+		New:  func() caddy.Module { return new(Rewrite) },
+	}
+}
+
 func (rewr Rewrite) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 	var rehandleNeeded bool

modules/caddyhttp/routes.go

@@ -27,32 +27,33 @@ import (
 // requests.
 type Route struct {
 	Group          string                       `json:"group,omitempty"`
-	MatcherSets []map[string]json.RawMessage `json:"match,omitempty"`
-	Handle      []json.RawMessage            `json:"handle,omitempty"`
+	MatcherSetsRaw []map[string]json.RawMessage `json:"match,omitempty"`
+	HandlersRaw    []json.RawMessage            `json:"handle,omitempty"`
 	Terminal       bool                         `json:"terminal,omitempty"`
 
 	// decoded values
-	matcherSets []MatcherSet
-	handlers    []MiddlewareHandler
+	MatcherSets []MatcherSet        `json:"-"`
+	Handlers    []MiddlewareHandler `json:"-"`
 }
 
 // Empty returns true if the route has all zero/default values.
 func (r Route) Empty() bool {
-	return len(r.MatcherSets) == 0 &&
-		len(r.Handle) == 0 &&
-		len(r.handlers) == 0 &&
+	return len(r.MatcherSetsRaw) == 0 &&
+		len(r.MatcherSets) == 0 &&
+		len(r.HandlersRaw) == 0 &&
+		len(r.Handlers) == 0 &&
 		!r.Terminal &&
 		r.Group == ""
 }
 
 func (r Route) anyMatcherSetMatches(req *http.Request) bool {
-	for _, ms := range r.matcherSets {
+	for _, ms := range r.MatcherSets {
 		if ms.Match(req) {
 			return true
 		}
 	}
 	// if no matchers, always match
-	return len(r.matcherSets) == 0
+	return len(r.MatcherSets) == 0
 }
 
 // MatcherSet is a set of matchers which
@@ -79,7 +80,7 @@ type RouteList []Route
 func (routes RouteList) Provision(ctx caddy.Context) error {
 	for i, route := range routes {
 		// matchers
-		for _, matcherSet := range route.MatcherSets {
+		for _, matcherSet := range route.MatcherSetsRaw {
 			var matchers MatcherSet
 			for modName, rawMsg := range matcherSet {
 				val, err := ctx.LoadModule("http.matchers."+modName, rawMsg)
@@ -88,19 +89,19 @@ func (routes RouteList) Provision(ctx caddy.Context) error {
 				}
 				matchers = append(matchers, val.(RequestMatcher))
 			}
-			routes[i].matcherSets = append(routes[i].matcherSets, matchers)
+			routes[i].MatcherSets = append(routes[i].MatcherSets, matchers)
 		}
-		routes[i].MatcherSets = nil // allow GC to deallocate - TODO: Does this help?
+		routes[i].MatcherSetsRaw = nil // allow GC to deallocate - TODO: Does this help?
 
 		// handlers
-		for j, rawMsg := range route.Handle {
+		for j, rawMsg := range route.HandlersRaw {
 			mh, err := ctx.LoadModuleInline("handler", "http.handlers", rawMsg)
 			if err != nil {
 				return fmt.Errorf("loading handler module in position %d: %v", j, err)
 			}
-			routes[i].handlers = append(routes[i].handlers, mh.(MiddlewareHandler))
+			routes[i].Handlers = append(routes[i].Handlers, mh.(MiddlewareHandler))
 		}
-		routes[i].Handle = nil // allow GC to deallocate - TODO: Does this help?
+		routes[i].HandlersRaw = nil // allow GC to deallocate - TODO: Does this help?
 	}
 	return nil
 }
@@ -135,7 +136,7 @@ func (routes RouteList) BuildCompositeRoute(req *http.Request) Handler {
 		}
 
 		// apply the rest of the route
-		for _, mh := range route.handlers {
+		for _, mh := range route.Handlers {
 			// we have to be sure to wrap mh outside
 			// of our current stack frame so that the
 			// reference to this mh isn't overwritten

modules/caddyhttp/staticerror.go

@@ -23,10 +23,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.error",
-		New:  func() interface{} { return new(StaticError) },
-	})
+	caddy.RegisterModule(StaticError{})
 }
 
 // StaticError implements a simple handler that returns an error.
@@ -35,6 +32,14 @@ type StaticError struct {
 	StatusCode WeakString `json:"status_code,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (StaticError) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.error",
+		New:  func() caddy.Module { return new(StaticError) },
+	}
+}
+
 func (e StaticError) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 

modules/caddyhttp/staticresp.go

@@ -24,10 +24,8 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.static_response",
-		New:  func() interface{} { return new(StaticResponse) },
-	})
+	caddy.RegisterModule(StaticResponse{})
+	// TODO: Caddyfile directive
 }
 
 // StaticResponse implements a simple responder for static responses.
@@ -38,6 +36,14 @@ type StaticResponse struct {
 	Close      bool        `json:"close,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (StaticResponse) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.static_response",
+		New:  func() caddy.Module { return new(StaticResponse) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     static_response [<matcher>] <status> {
@@ -71,9 +77,6 @@ func (s *StaticResponse) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	return nil
 }
 
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (StaticResponse) Bucket() int { return 7 }
-
 func (s StaticResponse) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 

modules/caddyhttp/subroute.go

@@ -22,10 +22,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.subroute",
-		New:  func() interface{} { return new(Subroute) },
-	})
+	caddy.RegisterModule(Subroute{})
 }
 
 // Subroute implements a handler that compiles and executes routes.
@@ -37,6 +34,14 @@ type Subroute struct {
 	Routes RouteList `json:"routes,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Subroute) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.subroute",
+		New:  func() caddy.Module { return new(Subroute) },
+	}
+}
+
 // Provision sets up subrouting.
 func (sr *Subroute) Provision(ctx caddy.Context) error {
 	if sr.Routes != nil {

modules/caddyhttp/templates/caddyfile.go

@@ -15,11 +15,15 @@
 package templates
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("templates", parseCaddyfile)
+}
+
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     templates [<matcher>] {
 //         mime <types...>
@@ -27,23 +31,24 @@ import (
 //         root <path>
 //     }
 //
-func (t *Templates) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		for d.NextBlock() {
-			switch d.Val() {
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	t := new(Templates)
+	for h.Next() {
+		for h.NextBlock() {
+			switch h.Val() {
 			case "mime":
-				t.MIMETypes = d.RemainingArgs()
+				t.MIMETypes = h.RemainingArgs()
 				if len(t.MIMETypes) == 0 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "between":
-				t.Delimiters = d.RemainingArgs()
+				t.Delimiters = h.RemainingArgs()
 				if len(t.Delimiters) != 2 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "root":
-				if !d.Args(&t.IncludeRoot) {
-					return d.ArgErr()
+				if !h.Args(&t.IncludeRoot) {
+					return nil, h.ArgErr()
 				}
 			}
 		}
@@ -53,11 +58,5 @@ func (t *Templates) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 		t.IncludeRoot = "{http.var.root}"
 	}
 
-	return nil
+	return t, nil
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (t Templates) Bucket() int { return 5 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Templates)(nil)

modules/caddyhttp/templates/templates.go

@@ -27,10 +27,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.templates",
-		New:  func() interface{} { return new(Templates) },
-	})
+	caddy.RegisterModule(Templates{})
 }
 
 // Templates is a middleware which execute response bodies as templates.
@@ -40,6 +37,14 @@ type Templates struct {
 	Delimiters  []string `json:"delimiters,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Templates) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.templates",
+		New:  func() caddy.Module { return new(Templates) },
+	}
+}
+
 // Provision provisions t.
 func (t *Templates) Provision(ctx caddy.Context) error {
 	if t.MIMETypes == nil {

modules/caddyhttp/vars.go

@@ -21,20 +21,22 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.vars",
-		New:  func() interface{} { return new(VarsMiddleware) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.vars",
-		New:  func() interface{} { return new(VarsMiddleware) },
-	})
+	caddy.RegisterModule(VarsMiddleware{})
+	caddy.RegisterModule(VarsMatcher{})
 }
 
 // VarsMiddleware is an HTTP middleware which sets variables
 // in the context, mainly for use by placeholders.
 type VarsMiddleware map[string]string
 
+// CaddyModule returns the Caddy module information.
+func (VarsMiddleware) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.vars",
+		New:  func() caddy.Module { return new(VarsMiddleware) },
+	}
+}
+
 func (t VarsMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next Handler) error {
 	vars := r.Context().Value(VarCtxKey).(map[string]interface{})
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
@@ -50,6 +52,14 @@ func (t VarsMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next H
 // requests based on variables in the context.
 type VarsMatcher map[string]string
 
+// CaddyModule returns the Caddy module information.
+func (VarsMatcher) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.vars",
+		New:  func() caddy.Module { return new(VarsMatcher) },
+	}
+}
+
 // Match matches a request based on variables in the context.
 func (m VarsMatcher) Match(r *http.Request) bool {
 	vars := r.Context().Value(VarCtxKey).(map[string]string)

modules/caddytls/acmemanager.go

@@ -28,10 +28,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.management.acme",
-		New:  func() interface{} { return new(ACMEManagerMaker) },
-	})
+	caddy.RegisterModule(ACMEManagerMaker{})
 }
 
 // ACMEManagerMaker makes an ACME manager
@@ -57,9 +54,17 @@ type ACMEManagerMaker struct {
 	keyType certcrypto.KeyType
 }
 
-// newManager is a no-op to satisfy the ManagerMaker interface,
+// CaddyModule returns the Caddy module information.
+func (ACMEManagerMaker) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.management.acme",
+		New:  func() caddy.Module { return new(ACMEManagerMaker) },
+	}
+}
+
+// NewManager is a no-op to satisfy the ManagerMaker interface,
 // because this manager type is a special case.
-func (m *ACMEManagerMaker) newManager(interactive bool) (certmagic.Manager, error) {
+func (m ACMEManagerMaker) NewManager(interactive bool) (certmagic.Manager, error) {
 	return nil, nil
 }
 
@@ -203,4 +208,4 @@ func onDemandAskRequest(ask string, name string) error {
 }
 
 // Interface guard
-var _ managerMaker = (*ACMEManagerMaker)(nil)
+var _ ManagerMaker = (*ACMEManagerMaker)(nil)

modules/caddytls/fileloader.go

@@ -23,15 +23,20 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.certificates.load_files",
-		New:  func() interface{} { return FileLoader{} },
-	})
+	caddy.RegisterModule(FileLoader{})
 }
 
 // FileLoader loads certificates and their associated keys from disk.
 type FileLoader []CertKeyFilePair
 
+// CaddyModule returns the Caddy module information.
+func (FileLoader) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.certificates.load_files",
+		New:  func() caddy.Module { return new(FileLoader) },
+	}
+}
+
 // CertKeyFilePair pairs certificate and key file names along with their
 // encoding format so that they can be loaded from disk.
 type CertKeyFilePair struct {

modules/caddytls/folderloader.go

@@ -28,10 +28,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.certificates.load_folders",
-		New:  func() interface{} { return FolderLoader{} },
-	})
+	caddy.RegisterModule(FolderLoader{})
 }
 
 // FolderLoader loads certificates and their associated keys from disk
@@ -39,6 +36,14 @@ func init() {
 // files which contain both a certificate and a key.
 type FolderLoader []string
 
+// CaddyModule returns the Caddy module information.
+func (FolderLoader) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.certificates.load_folders",
+		New:  func() caddy.Module { return new(FolderLoader) },
+	}
+}
+
 // LoadCertificates loads all the certificates+keys in the directories
 // listed in fl from all files ending with .pem. This method of loading
 // certificates expects the certificate and key to be bundled into the

modules/caddytls/matchers.go

@@ -20,14 +20,19 @@ import (
 	"github.com/caddyserver/caddy/v2"
 )
 
+func init() {
+	caddy.RegisterModule(MatchServerName{})
+}
+
 // MatchServerName matches based on SNI.
 type MatchServerName []string
 
-func init() {
-	caddy.RegisterModule(caddy.Module{
+// CaddyModule returns the Caddy module information.
+func (MatchServerName) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
 		Name: "tls.handshake_match.sni",
-		New:  func() interface{} { return MatchServerName{} },
-	})
+		New:  func() caddy.Module { return new(MatchServerName) },
+	}
 }
 
 // Match matches hello based on SNI.

modules/caddytls/standardstek/stek.go

@@ -24,10 +24,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.stek.standard",
-		New:  func() interface{} { return new(standardSTEKProvider) },
-	})
+	caddy.RegisterModule(standardSTEKProvider{})
 }
 
 type standardSTEKProvider struct {
@@ -35,6 +32,14 @@ type standardSTEKProvider struct {
 	timer      *time.Timer
 }
 
+// CaddyModule returns the Caddy module information.
+func (standardSTEKProvider) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.stek.standard",
+		New:  func() caddy.Module { return new(standardSTEKProvider) },
+	}
+}
+
 // Initialize sets the configuration for s and returns the starting keys.
 func (s *standardSTEKProvider) Initialize(config *caddytls.SessionTicketService) ([][32]byte, error) {
 	// keep a reference to the config; we'll need it when rotating keys

modules/caddytls/tls.go

@@ -30,10 +30,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls",
-		New:  func() interface{} { return new(TLS) },
-	})
+	caddy.RegisterModule(TLS{})
 
 	// opt-in TLS 1.3 for Go1.12
 	// TODO: remove this line when Go1.13 is released.
@@ -53,6 +50,14 @@ type TLS struct {
 	ctx                caddy.Context
 }
 
+// CaddyModule returns the Caddy module information.
+func (TLS) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls",
+		New:  func() caddy.Module { return new(TLS) },
+	}
+}
+
 // Provision sets up the configuration for the TLS app.
 func (t *TLS) Provision(ctx caddy.Context) error {
 	t.ctx = ctx
@@ -73,7 +78,7 @@ func (t *TLS) Provision(ctx caddy.Context) error {
 		if err != nil {
 			return fmt.Errorf("loading TLS automation management module: %s", err)
 		}
-		t.Automation.Policies[i].Management = val.(managerMaker)
+		t.Automation.Policies[i].Management = val.(ManagerMaker)
 		t.Automation.Policies[i].ManagementRaw = nil // allow GC to deallocate - TODO: Does this help?
 	}
 
@@ -237,7 +242,7 @@ type AutomationPolicy struct {
 	Hosts         []string        `json:"hosts,omitempty"`
 	ManagementRaw json.RawMessage `json:"management,omitempty"`
 
-	Management managerMaker `json:"-"`
+	Management ManagerMaker `json:"-"`
 }
 
 // makeCertMagicConfig converts ap into a CertMagic config. Passing onDemand
@@ -252,7 +257,7 @@ func (ap AutomationPolicy) makeCertMagicConfig(ctx caddy.Context) certmagic.Conf
 	}
 
 	return certmagic.Config{
-		NewManager: ap.Management.newManager,
+		NewManager: ap.Management.NewManager,
 	}
 }
 
@@ -290,9 +295,9 @@ type RateLimit struct {
 	Burst    int            `json:"burst,omitempty"`
 }
 
-// managerMaker makes a certificate manager.
-type managerMaker interface {
-	newManager(interactive bool) (certmagic.Manager, error)
+// ManagerMaker makes a certificate manager.
+type ManagerMaker interface {
+	NewManager(interactive bool) (certmagic.Manager, error)
 }
 
 // These perpetual values are used for on-demand TLS.

modules_test.go

@@ -21,7 +21,7 @@ import (
 
 func TestGetModules(t *testing.T) {
 	modulesMu.Lock()
-	modules = map[string]Module{
+	modules = map[string]ModuleInfo{
 		"a":      {Name: "a"},
 		"a.b":    {Name: "a.b"},
 		"a.b.c":  {Name: "a.b.c"},
@@ -38,11 +38,11 @@ func TestGetModules(t *testing.T) {
 
 	for i, tc := range []struct {
 		input  string
-		expect []Module
+		expect []ModuleInfo
 	}{
 		{
 			input: "",
-			expect: []Module{
+			expect: []ModuleInfo{
 				{Name: "a"},
 				{Name: "b"},
 				{Name: "c"},
@@ -50,7 +50,7 @@ func TestGetModules(t *testing.T) {
 		},
 		{
 			input: "a",
-			expect: []Module{
+			expect: []ModuleInfo{
 				{Name: "a.b"},
 				{Name: "a.c"},
 				{Name: "a.d"},
@@ -58,7 +58,7 @@ func TestGetModules(t *testing.T) {
 		},
 		{
 			input: "a.b",
-			expect: []Module{
+			expect: []ModuleInfo{
 				{Name: "a.b.c"},
 				{Name: "a.b.cd"},
 			},
@@ -68,7 +68,7 @@ func TestGetModules(t *testing.T) {
 		},
 		{
 			input: "b",
-			expect: []Module{
+			expect: []ModuleInfo{
 				{Name: "b.a"},
 				{Name: "b.b"},
 			},

storage.go

@@ -23,10 +23,7 @@ import (
 )
 
 func init() {
-	RegisterModule(Module{
-		Name: "caddy.storage.file_system",
-		New:  func() interface{} { return new(fileStorage) },
-	})
+	RegisterModule(fileStorage{})
 }
 
 // StorageConverter is a type that can convert itself
@@ -43,6 +40,14 @@ type fileStorage struct {
 	Root string `json:"root"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (fileStorage) CaddyModule() ModuleInfo {
+	return ModuleInfo{
+		Name: "caddy.storage.file_system",
+		New:  func() Module { return new(fileStorage) },
+	}
+}
+
 func (s fileStorage) CertMagicStorage() (certmagic.Storage, error) {
 	return &certmagic.FileStorage{Path: s.Root}, nil
 }