mirror of
https://github.com/caddyserver/caddy.git
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7103ea096f
Fixes `panic: runtime error: slice bounds out of range [:3] with capacity 2` Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
487 lines
11 KiB
Go
487 lines
11 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package caddyfile
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import (
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"testing"
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)
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func TestLexer(t *testing.T) {
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testCases := []struct {
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input []byte
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expected []Token
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expectErr bool
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errorMessage string
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}{
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{
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input: []byte(`host:123`),
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expected: []Token{
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{Line: 1, Text: "host:123"},
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},
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},
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{
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input: []byte(`host:123
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directive`),
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expected: []Token{
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{Line: 1, Text: "host:123"},
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{Line: 3, Text: "directive"},
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},
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},
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{
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input: []byte(`host:123 {
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directive
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}`),
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expected: []Token{
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{Line: 1, Text: "host:123"},
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{Line: 1, Text: "{"},
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{Line: 2, Text: "directive"},
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{Line: 3, Text: "}"},
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},
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},
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{
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input: []byte(`host:123 { directive }`),
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expected: []Token{
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{Line: 1, Text: "host:123"},
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{Line: 1, Text: "{"},
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{Line: 1, Text: "directive"},
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{Line: 1, Text: "}"},
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},
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},
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{
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input: []byte(`host:123 {
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#comment
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directive
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# comment
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foobar # another comment
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}`),
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expected: []Token{
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{Line: 1, Text: "host:123"},
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{Line: 1, Text: "{"},
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{Line: 3, Text: "directive"},
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{Line: 5, Text: "foobar"},
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{Line: 6, Text: "}"},
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},
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},
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{
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input: []byte(`host:123 {
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# hash inside string is not a comment
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redir / /some/#/path
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}`),
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expected: []Token{
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{Line: 1, Text: "host:123"},
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{Line: 1, Text: "{"},
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{Line: 3, Text: "redir"},
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{Line: 3, Text: "/"},
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{Line: 3, Text: "/some/#/path"},
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{Line: 4, Text: "}"},
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},
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},
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{
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input: []byte("# comment at beginning of file\n# comment at beginning of line\nhost:123"),
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expected: []Token{
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{Line: 3, Text: "host:123"},
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},
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},
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{
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input: []byte(`a "quoted value" b
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foobar`),
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expected: []Token{
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{Line: 1, Text: "a"},
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{Line: 1, Text: "quoted value"},
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{Line: 1, Text: "b"},
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{Line: 2, Text: "foobar"},
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},
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},
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{
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input: []byte(`A "quoted \"value\" inside" B`),
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expected: []Token{
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{Line: 1, Text: "A"},
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{Line: 1, Text: `quoted "value" inside`},
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{Line: 1, Text: "B"},
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},
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},
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{
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input: []byte("An escaped \"newline\\\ninside\" quotes"),
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expected: []Token{
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{Line: 1, Text: "An"},
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{Line: 1, Text: "escaped"},
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{Line: 1, Text: "newline\\\ninside"},
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{Line: 2, Text: "quotes"},
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},
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},
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{
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input: []byte("An escaped newline\\\noutside quotes"),
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expected: []Token{
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{Line: 1, Text: "An"},
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{Line: 1, Text: "escaped"},
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{Line: 1, Text: "newline"},
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{Line: 1, Text: "outside"},
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{Line: 1, Text: "quotes"},
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},
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},
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{
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input: []byte("line1\\\nescaped\nline2\nline3"),
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expected: []Token{
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{Line: 1, Text: "line1"},
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{Line: 1, Text: "escaped"},
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{Line: 3, Text: "line2"},
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{Line: 4, Text: "line3"},
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},
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},
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{
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input: []byte("line1\\\nescaped1\\\nescaped2\nline4\nline5"),
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expected: []Token{
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{Line: 1, Text: "line1"},
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{Line: 1, Text: "escaped1"},
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{Line: 1, Text: "escaped2"},
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{Line: 4, Text: "line4"},
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{Line: 5, Text: "line5"},
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},
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},
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{
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input: []byte(`"unescapable\ in quotes"`),
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expected: []Token{
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{Line: 1, Text: `unescapable\ in quotes`},
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},
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},
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{
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input: []byte(`"don't\escape"`),
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expected: []Token{
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{Line: 1, Text: `don't\escape`},
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},
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},
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{
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input: []byte(`"don't\\escape"`),
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expected: []Token{
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{Line: 1, Text: `don't\\escape`},
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},
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},
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{
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input: []byte(`un\escapable`),
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expected: []Token{
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{Line: 1, Text: `un\escapable`},
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},
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},
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{
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input: []byte(`A "quoted value with line
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break inside" {
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foobar
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}`),
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expected: []Token{
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{Line: 1, Text: "A"},
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{Line: 1, Text: "quoted value with line\n\t\t\t\t\tbreak inside"},
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{Line: 2, Text: "{"},
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{Line: 3, Text: "foobar"},
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{Line: 4, Text: "}"},
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},
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},
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{
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input: []byte(`"C:\php\php-cgi.exe"`),
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expected: []Token{
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{Line: 1, Text: `C:\php\php-cgi.exe`},
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},
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},
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{
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input: []byte(`empty "" string`),
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expected: []Token{
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{Line: 1, Text: `empty`},
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{Line: 1, Text: ``},
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{Line: 1, Text: `string`},
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},
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},
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{
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input: []byte("skip those\r\nCR characters"),
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expected: []Token{
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{Line: 1, Text: "skip"},
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{Line: 1, Text: "those"},
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{Line: 2, Text: "CR"},
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{Line: 2, Text: "characters"},
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},
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},
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{
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input: []byte("\xEF\xBB\xBF:8080"), // test with leading byte order mark
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expected: []Token{
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{Line: 1, Text: ":8080"},
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},
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},
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{
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input: []byte("simple `backtick quoted` string"),
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expected: []Token{
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{Line: 1, Text: `simple`},
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{Line: 1, Text: `backtick quoted`},
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{Line: 1, Text: `string`},
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},
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},
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{
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input: []byte("multiline `backtick\nquoted\n` string"),
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expected: []Token{
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{Line: 1, Text: `multiline`},
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{Line: 1, Text: "backtick\nquoted\n"},
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{Line: 3, Text: `string`},
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},
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},
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{
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input: []byte("nested `\"quotes inside\" backticks` string"),
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expected: []Token{
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{Line: 1, Text: `nested`},
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{Line: 1, Text: `"quotes inside" backticks`},
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{Line: 1, Text: `string`},
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},
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},
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{
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input: []byte("reverse-nested \"`backticks` inside\" quotes"),
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expected: []Token{
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{Line: 1, Text: `reverse-nested`},
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{Line: 1, Text: "`backticks` inside"},
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{Line: 1, Text: `quotes`},
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},
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},
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{
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input: []byte(`heredoc <<EOF
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content
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EOF same-line-arg
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`),
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expected: []Token{
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{Line: 1, Text: `heredoc`},
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{Line: 1, Text: "content"},
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{Line: 3, Text: `same-line-arg`},
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},
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},
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{
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input: []byte(`heredoc <<VERY-LONG-MARKER
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content
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VERY-LONG-MARKER same-line-arg
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`),
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expected: []Token{
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{Line: 1, Text: `heredoc`},
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{Line: 1, Text: "content"},
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{Line: 3, Text: `same-line-arg`},
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},
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},
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{
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input: []byte(`heredoc <<EOF
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extra-newline
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EOF same-line-arg
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`),
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expected: []Token{
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{Line: 1, Text: `heredoc`},
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{Line: 1, Text: "extra-newline\n"},
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{Line: 4, Text: `same-line-arg`},
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},
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},
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{
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input: []byte(`heredoc <<EOF
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EOF same-line-arg
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`),
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expected: []Token{
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{Line: 1, Text: `heredoc`},
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{Line: 1, Text: ""},
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{Line: 2, Text: `same-line-arg`},
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},
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},
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{
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input: []byte(`heredoc <<EOF
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content
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EOF same-line-arg
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`),
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expected: []Token{
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{Line: 1, Text: `heredoc`},
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{Line: 1, Text: "content"},
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{Line: 3, Text: `same-line-arg`},
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},
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},
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{
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input: []byte(`prev-line
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heredoc <<EOF
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multi
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line
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content
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EOF same-line-arg
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next-line
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`),
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expected: []Token{
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{Line: 1, Text: `prev-line`},
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{Line: 2, Text: `heredoc`},
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{Line: 2, Text: "\tmulti\n\tline\n\tcontent"},
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{Line: 6, Text: `same-line-arg`},
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{Line: 7, Text: `next-line`},
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},
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},
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{
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input: []byte(`escaped-heredoc \<< >>`),
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expected: []Token{
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{Line: 1, Text: `escaped-heredoc`},
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{Line: 1, Text: `<<`},
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{Line: 1, Text: `>>`},
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},
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},
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{
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input: []byte(`not-a-heredoc <EOF
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content
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`),
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expected: []Token{
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{Line: 1, Text: `not-a-heredoc`},
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{Line: 1, Text: `<EOF`},
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{Line: 2, Text: `content`},
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},
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},
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{
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input: []byte(`not-a-heredoc <<<EOF content`),
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expected: []Token{
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{Line: 1, Text: `not-a-heredoc`},
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{Line: 1, Text: `<<<EOF`},
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{Line: 1, Text: `content`},
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},
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},
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{
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input: []byte(`not-a-heredoc "<<" ">>"`),
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expected: []Token{
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{Line: 1, Text: `not-a-heredoc`},
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{Line: 1, Text: `<<`},
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{Line: 1, Text: `>>`},
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},
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},
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{
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input: []byte(`not-a-heredoc << >>`),
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expected: []Token{
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{Line: 1, Text: `not-a-heredoc`},
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{Line: 1, Text: `<<`},
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{Line: 1, Text: `>>`},
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},
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},
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{
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input: []byte(`not-a-heredoc <<HERE SAME LINE
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content
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HERE same-line-arg
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`),
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expected: []Token{
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{Line: 1, Text: `not-a-heredoc`},
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{Line: 1, Text: `<<HERE`},
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{Line: 1, Text: `SAME`},
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{Line: 1, Text: `LINE`},
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{Line: 2, Text: `content`},
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{Line: 3, Text: `HERE`},
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{Line: 3, Text: `same-line-arg`},
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},
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},
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{
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input: []byte(`heredoc <<s
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<09>
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s
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`),
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expected: []Token{
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{Line: 1, Text: `heredoc`},
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{Line: 1, Text: "<22>"},
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},
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},
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{
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input: []byte("\u000Aheredoc \u003C\u003C\u0073\u0073\u000A\u00BF\u0057\u0001\u0000\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u003D\u001F\u000A\u0073\u0073\u000A\u00BF\u0057\u0001\u0000\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u003D\u001F\u000A\u00BF\u00BF\u0057\u0001\u0000\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u003D\u001F"),
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expected: []Token{
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{
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Line: 2,
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Text: "heredoc",
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},
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{
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Line: 2,
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Text: "\u00BF\u0057\u0001\u0000\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u003D\u001F",
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},
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{
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Line: 5,
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Text: "\u00BF\u0057\u0001\u0000\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u003D\u001F",
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},
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{
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Line: 6,
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Text: "\u00BF\u00BF\u0057\u0001\u0000\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u00FF\u003D\u001F",
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},
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},
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},
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{
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input: []byte("not-a-heredoc <<\n"),
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expectErr: true,
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errorMessage: "missing opening heredoc marker on line #1; must contain only alpha-numeric characters, dashes and underscores; got empty string",
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},
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{
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input: []byte(`heredoc <<<EOF
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content
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EOF same-line-arg
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`),
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expectErr: true,
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errorMessage: "too many '<' for heredoc on line #1; only use two, for example <<END",
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},
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{
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input: []byte(`heredoc <<EOF
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content
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`),
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expectErr: true,
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errorMessage: "incomplete heredoc <<EOF on line #3, expected ending marker EOF",
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},
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{
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input: []byte(`heredoc <<EOF
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content
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EOF
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`),
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expectErr: true,
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errorMessage: "mismatched leading whitespace in heredoc <<EOF on line #2 [\tcontent], expected whitespace [\t\t] to match the closing marker",
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},
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{
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input: []byte(`heredoc <<EOF
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content
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EOF
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`),
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expectErr: true,
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errorMessage: "mismatched leading whitespace in heredoc <<EOF on line #2 [ content], expected whitespace [\t\t] to match the closing marker",
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},
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}
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for i, testCase := range testCases {
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actual, err := Tokenize(testCase.input, "")
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if testCase.expectErr {
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if err == nil {
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t.Fatalf("expected error, got actual: %v", actual)
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continue
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}
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if err.Error() != testCase.errorMessage {
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t.Fatalf("expected error '%v', got: %v", testCase.errorMessage, err)
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}
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continue
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}
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if err != nil {
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t.Fatalf("%v", err)
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}
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lexerCompare(t, i, testCase.expected, actual)
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}
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}
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func lexerCompare(t *testing.T, n int, expected, actual []Token) {
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if len(expected) != len(actual) {
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t.Fatalf("Test case %d: expected %d token(s) but got %d", n, len(expected), len(actual))
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}
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for i := 0; i < len(actual) && i < len(expected); i++ {
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if actual[i].Line != expected[i].Line {
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t.Fatalf("Test case %d token %d ('%s'): expected line %d but was line %d",
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n, i, expected[i].Text, expected[i].Line, actual[i].Line)
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break
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}
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if actual[i].Text != expected[i].Text {
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t.Fatalf("Test case %d token %d: expected text '%s' but was '%s'",
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n, i, expected[i].Text, actual[i].Text)
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break
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}
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}
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}
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