// Copyright 2010 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 mime
import (
"maps"
"strings"
"testing"
)
func TestConsumeToken(t *testing.T) {
tests := [...][3]string{
{"foo bar", "foo", " bar"},
{"bar", "bar", ""},
{"", "", ""},
{" foo", "", " foo"},
}
for _, test := range tests {
token, rest := consumeToken(test[0])
expectedToken := test[1]
expectedRest := test[2]
if token != expectedToken {
t.Errorf("expected to consume token '%s', not '%s' from '%s'",
expectedToken, token, test[0])
} else if rest != expectedRest {
t.Errorf("expected to have left '%s', not '%s' after reading token '%s' from '%s'",
expectedRest, rest, token, test[0])
}
}
}
func TestConsumeValue(t *testing.T) {
tests := [...][3]string{
{"foo bar", "foo", " bar"},
{"bar", "bar", ""},
{" bar ", "", " bar "},
{`"My value"end`, "My value", "end"},
{`"My value" end`, "My value", " end"},
{`"\\" rest`, "\\", " rest"},
{`"My \" value"end`, "My \" value", "end"},
{`"\" rest`, "", `"\" rest`},
{`"C:\dev\go\robots.txt"`, `C:\dev\go\robots.txt`, ""},
{`"C:\新建文件夹\中文第二次测试.mp4"`, `C:\新建文件夹\中文第二次测试.mp4`, ""},
}
for _, test := range tests {
value, rest := consumeValue(test[0])
expectedValue := test[1]
expectedRest := test[2]
if value != expectedValue {
t.Errorf("expected to consume value [%s], not [%s] from [%s]",
expectedValue, value, test[0])
} else if rest != expectedRest {
t.Errorf("expected to have left [%s], not [%s] after reading value [%s] from [%s]",
expectedRest, rest, value, test[0])
}
}
}
func TestConsumeMediaParam(t *testing.T) {
tests := [...][4]string{
{" ; foo=bar", "foo", "bar", ""},
{"; foo=bar", "foo", "bar", ""},
{";foo=bar", "foo", "bar", ""},
{";FOO=bar", "foo", "bar", ""},
{`;foo="bar"`, "foo", "bar", ""},
{`;foo="bar"; `, "foo", "bar", "; "},
{`;foo="bar"; foo=baz`, "foo", "bar", "; foo=baz"},
{` ; boundary=----CUT;`, "boundary", "----CUT", ";"},
{` ; key=value; blah="value";name="foo" `, "key", "value", `; blah="value";name="foo" `},
{`; blah="value";name="foo" `, "blah", "value", `;name="foo" `},
{`;name="foo" `, "name", "foo", ` `},
}
for _, test := range tests {
param, value, rest := consumeMediaParam(test[0])
expectedParam := test[1]
expectedValue := test[2]
expectedRest := test[3]
if param != expectedParam {
t.Errorf("expected to consume param [%s], not [%s] from [%s]",
expectedParam, param, test[0])
} else if value != expectedValue {
t.Errorf("expected to consume value [%s], not [%s] from [%s]",
expectedValue, value, test[0])
} else if rest != expectedRest {
t.Errorf("expected to have left [%s], not [%s] after reading [%s/%s] from [%s]",
expectedRest, rest, param, value, test[0])
}
}
}
type mediaTypeTest struct {
in string
t string
p map[string]string
}
func TestParseMediaType(t *testing.T) {
// Convenience map initializer
m := func(s ...string) map[string]string {
sm := make(map[string]string)
for i := 0; i < len(s); i += 2 {
sm[s[i]] = s[i+1]
}
return sm
}
nameFoo := map[string]string{"name": "foo"}
tests := []mediaTypeTest{
{`form-data; name="foo"`, "form-data", nameFoo},
{` form-data ; name=foo`, "form-data", nameFoo},
{`FORM-DATA;name="foo"`, "form-data", nameFoo},
{` FORM-DATA ; name="foo"`, "form-data", nameFoo},
{` FORM-DATA ; name="foo"`, "form-data", nameFoo},
{`form-data; key=value; blah="value";name="foo" `,
"form-data",
m("key", "value", "blah", "value", "name", "foo")},
{`foo; key=val1; key=the-key-appears-again-which-is-bogus`,
"", m()},
// From RFC 2231:
{`application/x-stuff; title*=us-ascii'en-us'This%20is%20%2A%2A%2Afun%2A%2A%2A`,
"application/x-stuff",
m("title", "This is ***fun***")},
{`message/external-body; access-type=URL; ` +
`URL*0="ftp://";` +
`URL*1="cs.utk.edu/pub/moore/bulk-mailer/bulk-mailer.tar"`,
"message/external-body",
m("access-type", "URL",
"url", "ftp://cs.utk.edu/pub/moore/bulk-mailer/bulk-mailer.tar")},
{`application/x-stuff; ` +
`title*0*=us-ascii'en'This%20is%20even%20more%20; ` +
`title*1*=%2A%2A%2Afun%2A%2A%2A%20; ` +
`title*2="isn't it!"`,
"application/x-stuff",
m("title", "This is even more ***fun*** isn't it!")},
// Tests from http://greenbytes.de/tech/tc2231/
// Note: Backslash escape handling is a bit loose, like MSIE.
// #attonly
{`attachment`,
"attachment",
m()},
// #attonlyucase
{`ATTACHMENT`,
"attachment",
m()},
// #attwithasciifilename
{`attachment; filename="foo.html"`,
"attachment",
m("filename", "foo.html")},
// #attwithasciifilename25
{`attachment; filename="0000000000111111111122222"`,
"attachment",
m("filename", "0000000000111111111122222")},
// #attwithasciifilename35
{`attachment; filename="00000000001111111111222222222233333"`,
"attachment",
m("filename", "00000000001111111111222222222233333")},
// #attwithasciifnescapedchar
{`attachment; filename="f\oo.html"`,
"attachment",
m("filename", "f\\oo.html")},
// #attwithasciifnescapedquote
{`attachment; filename="\"quoting\" tested.html"`,
"attachment",
m("filename", `"quoting" tested.html`)},
// #attwithquotedsemicolon
{`attachment; filename="Here's a semicolon;.html"`,
"attachment",
m("filename", "Here's a semicolon;.html")},
// #attwithfilenameandextparam
{`attachment; foo="bar"; filename="foo.html"`,
"attachment",
m("foo", "bar", "filename", "foo.html")},
// #attwithfilenameandextparamescaped
{`attachment; foo="\"\\";filename="foo.html"`,
"attachment",
m("foo", "\"\\", "filename", "foo.html")},
// #attwithasciifilenameucase
{`attachment; FILENAME="foo.html"`,
"attachment",
m("filename", "foo.html")},
// #attwithasciifilenamenq
{`attachment; filename=foo.html`,
"attachment",
m("filename", "foo.html")},
// #attwithasciifilenamenqs
{`attachment; filename=foo.html ;`,
"attachment",
m("filename", "foo.html")},
// #attwithfntokensq
{`attachment; filename='foo.html'`,
"attachment",
m("filename", "'foo.html'")},
// #attwithisofnplain
{`attachment; filename="foo-ä.html"`,
"attachment",
m("filename", "foo-ä.html")},
// #attwithutf8fnplain
{`attachment; filename="foo-ä.html"`,
"attachment",
m("filename", "foo-ä.html")},
// #attwithfnrawpctenca
{`attachment; filename="foo-%41.html"`,
"attachment",
m("filename", "foo-%41.html")},
// #attwithfnusingpct
{`attachment; filename="50%.html"`,
"attachment",
m("filename", "50%.html")},
// #attwithfnrawpctencaq
{`attachment; filename="foo-%\41.html"`,
"attachment",
m("filename", "foo-%\\41.html")},
// #attwithnamepct
{`attachment; name="foo-%41.html"`,
"attachment",
m("name", "foo-%41.html")},
// #attwithfilenamepctandiso
{`attachment; name="ä-%41.html"`,
"attachment",
m("name", "ä-%41.html")},
// #attwithfnrawpctenclong
{`attachment; filename="foo-%c3%a4-%e2%82%ac.html"`,
"attachment",
m("filename", "foo-%c3%a4-%e2%82%ac.html")},
// #attwithasciifilenamews1
{`attachment; filename ="foo.html"`,
"attachment",
m("filename", "foo.html")},
// #attmissingdisposition
{`filename=foo.html`,
"", m()},
// #attmissingdisposition2
{`x=y; filename=foo.html`,
"", m()},
// #attmissingdisposition3
{`"foo; filename=bar;baz"; filename=qux`,
"", m()},
// #attmissingdisposition4
{`filename=foo.html, filename=bar.html`,
"", m()},
// #emptydisposition
{`; filename=foo.html`,
"", m()},
// #doublecolon
{`: inline; attachment; filename=foo.html`,
"", m()},
// #attandinline
{`inline; attachment; filename=foo.html`,
"", m()},
// #attandinline2
{`attachment; inline; filename=foo.html`,
"", m()},
// #attbrokenquotedfn
{`attachment; filename="foo.html".txt`,
"", m()},
// #attbrokenquotedfn2
{`attachment; filename="bar`,
"", m()},
// #attbrokenquotedfn3
{`attachment; filename=foo"bar;baz"qux`,
"", m()},
// #attmultinstances
{`attachment; filename=foo.html, attachment; filename=bar.html`,
"", m()},
// #attmissingdelim
{`attachment; foo=foo filename=bar`,
"", m()},
// #attmissingdelim2
{`attachment; filename=bar foo=foo`,
"", m()},
// #attmissingdelim3
{`attachment filename=bar`,
"", m()},
// #attreversed
{`filename=foo.html; attachment`,
"", m()},
// #attconfusedparam
{`attachment; xfilename=foo.html`,
"attachment",
m("xfilename", "foo.html")},
// #attcdate
{`attachment; creation-date="Wed, 12 Feb 1997 16:29:51 -0500"`,
"attachment",
m("creation-date", "Wed, 12 Feb 1997 16:29:51 -0500")},
// #attmdate
{`attachment; modification-date="Wed, 12 Feb 1997 16:29:51 -0500"`,
"attachment",
m("modification-date", "Wed, 12 Feb 1997 16:29:51 -0500")},
// #dispext
{`foobar`, "foobar", m()},
// #dispextbadfn
{`attachment; example="filename=example.txt"`,
"attachment",
m("example", "filename=example.txt")},
// #attwithfn2231utf8
{`attachment; filename*=UTF-8''foo-%c3%a4-%e2%82%ac.html`,
"attachment",
m("filename", "foo-ä-€.html")},
// #attwithfn2231noc
{`attachment; filename*=''foo-%c3%a4-%e2%82%ac.html`,
"attachment",
m()},
// #attwithfn2231utf8comp
{`attachment; filename*=UTF-8''foo-a%cc%88.html`,
"attachment",
m("filename", "foo-ä.html")},
// #attwithfn2231ws2
{`attachment; filename*= UTF-8''foo-%c3%a4.html`,
"attachment",
m("filename", "foo-ä.html")},
// #attwithfn2231ws3
{`attachment; filename* =UTF-8''foo-%c3%a4.html`,
"attachment",
m("filename", "foo-ä.html")},
// #attwithfn2231quot
{`attachment; filename*="UTF-8''foo-%c3%a4.html"`,
"attachment",
m("filename", "foo-ä.html")},
// #attwithfn2231quot2
{`attachment; filename*="foo%20bar.html"`,
"attachment",
m()},
// #attwithfn2231singleqmissing
{`attachment; filename*=UTF-8'foo-%c3%a4.html`,
"attachment",
m()},
// #attwithfn2231nbadpct1
{`attachment; filename*=UTF-8''foo%`,
"attachment",
m()},
// #attwithfn2231nbadpct2
{`attachment; filename*=UTF-8''f%oo.html`,
"attachment",
m()},
// #attwithfn2231dpct
{`attachment; filename*=UTF-8''A-%2541.html`,
"attachment",
m("filename", "A-%41.html")},
// #attfncont
{`attachment; filename*0="foo."; filename*1="html"`,
"attachment",
m("filename", "foo.html")},
// #attfncontenc
{`attachment; filename*0*=UTF-8''foo-%c3%a4; filename*1=".html"`,
"attachment",
m("filename", "foo-ä.html")},
// #attfncontlz
{`attachment; filename*0="foo"; filename*01="bar"`,
"attachment",
m("filename", "foo")},
// #attfncontnc
{`attachment; filename*0="foo"; filename*2="bar"`,
"attachment",
m("filename", "foo")},
// #attfnconts1
{`attachment; filename*1="foo."; filename*2="html"`,
"attachment", m()},
// #attfncontord
{`attachment; filename*1="bar"; filename*0="foo"`,
"attachment",
m("filename", "foobar")},
// #attfnboth
{`attachment; filename="foo-ae.html"; filename*=UTF-8''foo-%c3%a4.html`,
"attachment",
m("filename", "foo-ä.html")},
// #attfnboth2
{`attachment; filename*=UTF-8''foo-%c3%a4.html; filename="foo-ae.html"`,
"attachment",
m("filename", "foo-ä.html")},
// #attfnboth3
{`attachment; filename*0*=ISO-8859-15''euro-sign%3d%a4; filename*=ISO-8859-1''currency-sign%3d%a4`,
"attachment",
m()},
// #attnewandfn
{`attachment; foobar=x; filename="foo.html"`,
"attachment",
m("foobar", "x", "filename", "foo.html")},
// Browsers also just send UTF-8 directly without RFC 2231,
// at least when the source page is served with UTF-8.
{`form-data; firstname="Брэд"; lastname="Фицпатрик"`,
"form-data",
m("firstname", "Брэд", "lastname", "Фицпатрик")},
// Empty string used to be mishandled.
{`foo; bar=""`, "foo", m("bar", "")},
// Microsoft browsers in intranet mode do not think they need to escape \ in file name.
{`form-data; name="file"; filename="C:\dev\go\robots.txt"`, "form-data", m("name", "file", "filename", `C:\dev\go\robots.txt`)},
{`form-data; name="file"; filename="C:\新建文件夹\中文第二次测试.mp4"`, "form-data", m("name", "file", "filename", `C:\新建文件夹\中文第二次测试.mp4`)},
// issue #46323 (https://github.com/golang/go/issues/46323)
{
// example from rfc2231-p.3 (https://datatracker.ietf.org/doc/html/rfc2231)
`message/external-body; access-type=URL;
URL*0="ftp://";
URL*1="cs.utk.edu/pub/moore/bulk-mailer/bulk-mailer.tar";`, // <-- trailing semicolon
`message/external-body`,
m("access-type", "URL", "url", "ftp://cs.utk.edu/pub/moore/bulk-mailer/bulk-mailer.tar"),
},
// Issue #48866: duplicate parameters containing equal values should be allowed
{`text; charset=utf-8; charset=utf-8; format=fixed`, "text", m("charset", "utf-8", "format", "fixed")},
{`text; charset=utf-8; format=flowed; charset=utf-8`, "text", m("charset", "utf-8", "format", "flowed")},
}
for _, test := range tests {
mt, params, err := ParseMediaType(test.in)
if err != nil {
if test.t != "" {
t.Errorf("for input %#q, unexpected error: %v", test.in, err)
continue
}
continue
}
if g, e := mt, test.t; g != e {
t.Errorf("for input %#q, expected type %q, got %q",
test.in, e, g)
continue
}
if len(params) == 0 && len(test.p) == 0 {
continue
}
if !maps.Equal(params, test.p) {
t.Errorf("for input %#q, wrong params.\n"+
"expected: %#v\n"+
" got: %#v",
test.in, test.p, params)
}
}
}
type badMediaTypeTest struct {
in string
mt string
err string
}
var badMediaTypeTests = []badMediaTypeTest{
{"bogus ;=========", "bogus", "mime: invalid media parameter"},
// The following example is from real email delivered by gmail (error: missing semicolon)
// and it is there to check behavior described in #19498
{"application/pdf; x-mac-type=\"3F3F3F3F\"; x-mac-creator=\"3F3F3F3F\" name=\"a.pdf\";",
"application/pdf", "mime: invalid media parameter"},
{"bogus/", "", "mime: expected token after slash"},
{"bogus/bogus", "", "mime: unexpected content after media subtype"},
// Tests from http://greenbytes.de/tech/tc2231/
{`"attachment"`, "attachment", "mime: no media type"},
{"attachment; filename=foo,bar.html", "attachment", "mime: invalid media parameter"},
{"attachment; ;filename=foo", "attachment", "mime: invalid media parameter"},
{"attachment; filename=foo bar.html", "attachment", "mime: invalid media parameter"},
{`attachment; filename="foo.html"; filename="bar.html"`, "attachment", "mime: duplicate parameter name"},
{"attachment; filename=foo[1](2).html", "attachment", "mime: invalid media parameter"},
{"attachment; filename=foo-ä.html", "attachment", "mime: invalid media parameter"},
{"attachment; filename=foo-ä.html", "attachment", "mime: invalid media parameter"},
{`attachment; filename *=UTF-8''foo-%c3%a4.html`, "attachment", "mime: invalid media parameter"},
}
func TestParseMediaTypeBogus(t *testing.T) {
for _, tt := range badMediaTypeTests {
mt, params, err := ParseMediaType(tt.in)
if err == nil {
t.Errorf("ParseMediaType(%q) = nil error; want parse error", tt.in)
continue
}
if err.Error() != tt.err {
t.Errorf("ParseMediaType(%q) = err %q; want %q", tt.in, err.Error(), tt.err)
}
if params != nil {
t.Errorf("ParseMediaType(%q): got non-nil params on error", tt.in)
}
if err != ErrInvalidMediaParameter && mt != "" {
t.Errorf("ParseMediaType(%q): got unexpected non-empty media type string", tt.in)
}
if err == ErrInvalidMediaParameter && mt != tt.mt {
t.Errorf("ParseMediaType(%q): in case of invalid parameters: expected type %q, got %q", tt.in, tt.mt, mt)
}
}
}
type formatTest struct {
typ string
params map[string]string
want string
}
var formatTests = []formatTest{
{"noslash", map[string]string{"X": "Y"}, "noslash; x=Y"}, // e.g. Content-Disposition values (RFC 2183); issue 11289
{"foo bar/baz", nil, ""},
{"foo/bar baz", nil, ""},
{"attachment", map[string]string{"filename": "ĄĄŽŽČČŠŠ"}, "attachment; filename*=utf-8''%C4%84%C4%84%C5%BD%C5%BD%C4%8C%C4%8C%C5%A0%C5%A0"},
{"attachment", map[string]string{"filename": "ÁÁÊÊÇÇÎÎ"}, "attachment; filename*=utf-8''%C3%81%C3%81%C3%8A%C3%8A%C3%87%C3%87%C3%8E%C3%8E"},
{"attachment", map[string]string{"filename": "数据统计.png"}, "attachment; filename*=utf-8''%E6%95%B0%E6%8D%AE%E7%BB%9F%E8%AE%A1.png"},
{"foo/BAR", nil, "foo/bar"},
{"foo/BAR", map[string]string{"X": "Y"}, "foo/bar; x=Y"},
{"foo/BAR", map[string]string{"space": "With space"}, `foo/bar; space="With space"`},
{"foo/BAR", map[string]string{"quote": `With "quote`}, `foo/bar; quote="With \"quote"`},
{"foo/BAR", map[string]string{"bslash": `With \backslash`}, `foo/bar; bslash="With \\backslash"`},
{"foo/BAR", map[string]string{"both": `With \backslash and "quote`}, `foo/bar; both="With \\backslash and \"quote"`},
{"foo/BAR", map[string]string{"": "empty attribute"}, ""},
{"foo/BAR", map[string]string{"bad attribute": "baz"}, ""},
{"foo/BAR", map[string]string{"nonascii": "not an ascii character: ä"}, "foo/bar; nonascii*=utf-8''not%20an%20ascii%20character%3A%20%C3%A4"},
{"foo/BAR", map[string]string{"ctl": "newline: \n nil: \000"}, "foo/bar; ctl*=utf-8''newline%3A%20%0A%20nil%3A%20%00"},
{"foo/bar", map[string]string{"a": "av", "b": "bv", "c": "cv"}, "foo/bar; a=av; b=bv; c=cv"},
{"foo/bar", map[string]string{"0": "'", "9": "'"}, "foo/bar; 0='; 9='"},
{"foo", map[string]string{"bar": ""}, `foo; bar=""`},
}
func TestFormatMediaType(t *testing.T) {
for i, tt := range formatTests {
got := FormatMediaType(tt.typ, tt.params)
if got != tt.want {
t.Errorf("%d. FormatMediaType(%q, %v) = %q; want %q", i, tt.typ, tt.params, got, tt.want)
}
if got == "" {
continue
}
typ, params, err := ParseMediaType(got)
if err != nil {
t.Errorf("%d. ParseMediaType(%q) err: %v", i, got, err)
}
if typ != strings.ToLower(tt.typ) {
t.Errorf("%d. ParseMediaType(%q) typ = %q; want %q", i, got, typ, tt.typ)
}
for k, v := range tt.params {
k = strings.ToLower(k)
if params[k] != v {
t.Errorf("%d. ParseMediaType(%q) params[%s] = %q; want %q", i, got, k, params[k], v)
}
}
}
}