diff options
Diffstat (limited to 'src/pkg/html/template/content_test.go')
| -rw-r--r-- | src/pkg/html/template/content_test.go | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/src/pkg/html/template/content_test.go b/src/pkg/html/template/content_test.go new file mode 100644 index 000000000..c96a521a5 --- /dev/null +++ b/src/pkg/html/template/content_test.go @@ -0,0 +1,221 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package template + +import ( + "bytes" + "strings" + "testing" +) + +func TestTypedContent(t *testing.T) { + data := []interface{}{ + `<b> "foo%" O'Reilly &bar;`, + CSS(`a[href =~ "//example.com"]#foo`), + HTML(`Hello, <b>World</b> &tc!`), + HTMLAttr(` dir="ltr"`), + JS(`c && alert("Hello, World!");`), + JSStr(`Hello, World & O'Reilly\x21`), + URL(`greeting=H%69&addressee=(World)`), + } + + // For each content sensitive escaper, see how it does on + // each of the typed strings above. + tests := []struct { + // A template containing a single {{.}}. + input string + want []string + }{ + { + `<style>{{.}} { color: blue }</style>`, + []string{ + `ZgotmplZ`, + // Allowed but not escaped. + `a[href =~ "//example.com"]#foo`, + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + }, + }, + { + `<div style="{{.}}">`, + []string{ + `ZgotmplZ`, + // Allowed and HTML escaped. + `a[href =~ "//example.com"]#foo`, + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + }, + }, + { + `{{.}}`, + []string{ + `<b> "foo%" O'Reilly &bar;`, + `a[href =~ "//example.com"]#foo`, + // Not escaped. + `Hello, <b>World</b> &tc!`, + ` dir="ltr"`, + `c && alert("Hello, World!");`, + `Hello, World & O'Reilly\x21`, + `greeting=H%69&addressee=(World)`, + }, + }, + { + `<a{{.}}>`, + []string{ + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + // Allowed and HTML escaped. + ` dir="ltr"`, + `ZgotmplZ`, + `ZgotmplZ`, + `ZgotmplZ`, + }, + }, + { + `<a title={{.}}>`, + []string{ + `<b> "foo%" O'Reilly &bar;`, + `a[href =~ "//example.com"]#foo`, + // Tags stripped, spaces escaped, entity not re-escaped. + `Hello, World &tc!`, + ` dir="ltr"`, + `c && alert("Hello, World!");`, + `Hello, World & O'Reilly\x21`, + `greeting=H%69&addressee=(World)`, + }, + }, + { + `<a title='{{.}}'>`, + []string{ + `<b> "foo%" O'Reilly &bar;`, + `a[href =~ "//example.com"]#foo`, + // Tags stripped, entity not re-escaped. + `Hello, World &tc!`, + ` dir="ltr"`, + `c && alert("Hello, World!");`, + `Hello, World & O'Reilly\x21`, + `greeting=H%69&addressee=(World)`, + }, + }, + { + `<textarea>{{.}}</textarea>`, + []string{ + `<b> "foo%" O'Reilly &bar;`, + `a[href =~ "//example.com"]#foo`, + // Angle brackets escaped to prevent injection of close tags, entity not re-escaped. + `Hello, <b>World</b> &tc!`, + ` dir="ltr"`, + `c && alert("Hello, World!");`, + `Hello, World & O'Reilly\x21`, + `greeting=H%69&addressee=(World)`, + }, + }, + { + `<script>alert({{.}})</script>`, + []string{ + `"\u003cb\u003e \"foo%\" O'Reilly &bar;"`, + `"a[href =~ \"//example.com\"]#foo"`, + `"Hello, \u003cb\u003eWorld\u003c/b\u003e &tc!"`, + `" dir=\"ltr\""`, + // Not escaped. + `c && alert("Hello, World!");`, + // Escape sequence not over-escaped. + `"Hello, World & O'Reilly\x21"`, + `"greeting=H%69&addressee=(World)"`, + }, + }, + { + `<button onclick="alert({{.}})">`, + []string{ + `"\u003cb\u003e \"foo%\" O'Reilly &bar;"`, + `"a[href =~ \"//example.com\"]#foo"`, + `"Hello, \u003cb\u003eWorld\u003c/b\u003e &amp;tc!"`, + `" dir=\"ltr\""`, + // Not JS escaped but HTML escaped. + `c && alert("Hello, World!");`, + // Escape sequence not over-escaped. + `"Hello, World & O'Reilly\x21"`, + `"greeting=H%69&addressee=(World)"`, + }, + }, + { + `<script>alert("{{.}}")</script>`, + []string{ + `\x3cb\x3e \x22foo%\x22 O\x27Reilly \x26bar;`, + `a[href =~ \x22\/\/example.com\x22]#foo`, + `Hello, \x3cb\x3eWorld\x3c\/b\x3e \x26amp;tc!`, + ` dir=\x22ltr\x22`, + `c \x26\x26 alert(\x22Hello, World!\x22);`, + // Escape sequence not over-escaped. + `Hello, World \x26 O\x27Reilly\x21`, + `greeting=H%69\x26addressee=(World)`, + }, + }, + { + `<button onclick='alert("{{.}}")'>`, + []string{ + `\x3cb\x3e \x22foo%\x22 O\x27Reilly \x26bar;`, + `a[href =~ \x22\/\/example.com\x22]#foo`, + `Hello, \x3cb\x3eWorld\x3c\/b\x3e \x26amp;tc!`, + ` dir=\x22ltr\x22`, + `c \x26\x26 alert(\x22Hello, World!\x22);`, + // Escape sequence not over-escaped. + `Hello, World \x26 O\x27Reilly\x21`, + `greeting=H%69\x26addressee=(World)`, + }, + }, + { + `<a href="?q={{.}}">`, + []string{ + `%3cb%3e%20%22foo%25%22%20O%27Reilly%20%26bar%3b`, + `a%5bhref%20%3d~%20%22%2f%2fexample.com%22%5d%23foo`, + `Hello%2c%20%3cb%3eWorld%3c%2fb%3e%20%26amp%3btc%21`, + `%20dir%3d%22ltr%22`, + `c%20%26%26%20alert%28%22Hello%2c%20World%21%22%29%3b`, + `Hello%2c%20World%20%26%20O%27Reilly%5cx21`, + // Quotes and parens are escaped but %69 is not over-escaped. HTML escaping is done. + `greeting=H%69&addressee=%28World%29`, + }, + }, + { + `<style>body { background: url('?img={{.}}') }</style>`, + []string{ + `%3cb%3e%20%22foo%25%22%20O%27Reilly%20%26bar%3b`, + `a%5bhref%20%3d~%20%22%2f%2fexample.com%22%5d%23foo`, + `Hello%2c%20%3cb%3eWorld%3c%2fb%3e%20%26amp%3btc%21`, + `%20dir%3d%22ltr%22`, + `c%20%26%26%20alert%28%22Hello%2c%20World%21%22%29%3b`, + `Hello%2c%20World%20%26%20O%27Reilly%5cx21`, + // Quotes and parens are escaped but %69 is not over-escaped. HTML escaping is not done. + `greeting=H%69&addressee=%28World%29`, + }, + }, + } + + for _, test := range tests { + tmpl := Must(New("x").Parse(test.input)) + pre := strings.Index(test.input, "{{.}}") + post := len(test.input) - (pre + 5) + var b bytes.Buffer + for i, x := range data { + b.Reset() + if err := tmpl.Execute(&b, x); err != nil { + t.Errorf("%q with %v: %s", test.input, x, err) + continue + } + if want, got := test.want[i], b.String()[pre:b.Len()-post]; want != got { + t.Errorf("%q with %v:\nwant\n\t%q,\ngot\n\t%q\n", test.input, x, want, got) + continue + } + } + } +} |