Fix bug of link query order on markdown render (#14156)
* Fix bug of link query order on markdown render * Fix bluemonday bug and fix one wrong test Co-authored-by: 6543 <6543@obermui.de>
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3175d08626
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2
go.mod
2
go.mod
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@ -126,3 +126,5 @@ require (
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)
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replace github.com/hashicorp/go-version => github.com/6543/go-version v1.2.4
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replace github.com/microcosm-cc/bluemonday => github.com/lunny/bluemonday v1.0.5-0.20201227154428-ca34796141e8
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4
go.sum
4
go.sum
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@ -743,6 +743,8 @@ github.com/lib/pq v1.8.1-0.20200908161135-083382b7e6fc h1:ERSU1OvZ6MdWhHieo2oT7x
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github.com/lib/pq v1.8.1-0.20200908161135-083382b7e6fc/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
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github.com/lightstep/lightstep-tracer-common/golang/gogo v0.0.0-20190605223551-bc2310a04743/go.mod h1:qklhhLq1aX+mtWk9cPHPzaBjWImj5ULL6C7HFJtXQMM=
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github.com/lightstep/lightstep-tracer-go v0.18.1/go.mod h1:jlF1pusYV4pidLvZ+XD0UBX0ZE6WURAspgAczcDHrL4=
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github.com/lunny/bluemonday v1.0.5-0.20201227154428-ca34796141e8 h1:1omo92DLtxQu6VwVPSZAmduHaK5zssed6cvkHyl1XOg=
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github.com/lunny/bluemonday v1.0.5-0.20201227154428-ca34796141e8/go.mod h1:8iwZnFn2CDDNZ0r6UXhF4xawGvzaqzCRa1n3/lO3W2w=
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github.com/lunny/dingtalk_webhook v0.0.0-20171025031554-e3534c89ef96 h1:uNwtsDp7ci48vBTTxDuwcoTXz4lwtDTe7TjCQ0noaWY=
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github.com/lunny/dingtalk_webhook v0.0.0-20171025031554-e3534c89ef96/go.mod h1:mmIfjCSQlGYXmJ95jFN84AkQFnVABtKuJL8IrzwvUKQ=
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github.com/lunny/log v0.0.0-20160921050905-7887c61bf0de h1:nyxwRdWHAVxpFcDThedEgQ07DbcRc5xgNObtbTp76fk=
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@ -801,8 +803,6 @@ github.com/mgechev/revive v1.0.3-0.20200921231451-246eac737dc7 h1:ydVkpU/M4/c45y
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github.com/mgechev/revive v1.0.3-0.20200921231451-246eac737dc7/go.mod h1:no/hfevHbndpXR5CaJahkYCfM/FFpmM/dSOwFGU7Z1o=
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github.com/mholt/archiver/v3 v3.5.0 h1:nE8gZIrw66cu4osS/U7UW7YDuGMHssxKutU8IfWxwWE=
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github.com/mholt/archiver/v3 v3.5.0/go.mod h1:qqTTPUK/HZPFgFQ/TJ3BzvTpF/dPtFVJXdQbCmeMxwc=
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github.com/microcosm-cc/bluemonday v1.0.4 h1:p0L+CTpo/PLFdkoPcJemLXG+fpMD7pYOoDEq1axMbGg=
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github.com/microcosm-cc/bluemonday v1.0.4/go.mod h1:8iwZnFn2CDDNZ0r6UXhF4xawGvzaqzCRa1n3/lO3W2w=
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github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
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github.com/minio/md5-simd v1.1.0 h1:QPfiOqlZH+Cj9teu0t9b1nTBfPbyTl16Of5MeuShdK4=
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github.com/minio/md5-simd v1.1.0/go.mod h1:XpBqgZULrMYD3R+M28PcmP0CkI7PEMzB3U77ZrKZ0Gw=
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@ -142,7 +142,7 @@ func TestRender_links(t *testing.T) {
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`<p><a href="ftp://gitea.com/file.txt" rel="nofollow">ftp://gitea.com/file.txt</a></p>`)
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test(
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"magnet:?xt=urn:btih:5dee65101db281ac9c46344cd6b175cdcadabcde&dn=download",
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`<p><a href="magnet:?dn=download&xt=urn%3Abtih%3A5dee65101db281ac9c46344cd6b175cdcadabcde" rel="nofollow">magnet:?xt=urn:btih:5dee65101db281ac9c46344cd6b175cdcadabcde&dn=download</a></p>`)
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`<p><a href="magnet:?xt=urn%3Abtih%3A5dee65101db281ac9c46344cd6b175cdcadabcde&dn=download" rel="nofollow">magnet:?xt=urn:btih:5dee65101db281ac9c46344cd6b175cdcadabcde&dn=download</a></p>`)
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// Test that should *not* be turned into URL
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test(
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@ -122,22 +122,79 @@ func escapeUrlComponent(val string) string {
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return w.String()
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}
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func sanitizedUrl(val string) (string, error) {
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// Query represents a query
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type Query struct {
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Key string
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Value string
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}
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func parseQuery(query string) (values []Query, err error) {
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for query != "" {
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key := query
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if i := strings.IndexAny(key, "&;"); i >= 0 {
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key, query = key[:i], key[i+1:]
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} else {
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query = ""
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}
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if key == "" {
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continue
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}
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value := ""
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if i := strings.Index(key, "="); i >= 0 {
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key, value = key[:i], key[i+1:]
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}
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key, err1 := url.QueryUnescape(key)
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if err1 != nil {
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if err == nil {
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err = err1
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}
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continue
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}
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value, err1 = url.QueryUnescape(value)
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if err1 != nil {
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if err == nil {
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err = err1
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}
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continue
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}
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values = append(values, Query{
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Key: key,
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Value: value,
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})
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}
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return values, err
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}
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func encodeQueries(queries []Query) string {
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var b strings.Builder
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for i, query := range queries {
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b.WriteString(url.QueryEscape(query.Key))
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b.WriteString("=")
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b.WriteString(url.QueryEscape(query.Value))
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if i < len(queries)-1 {
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b.WriteString("&")
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}
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}
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return b.String()
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}
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func sanitizedURL(val string) (string, error) {
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u, err := url.Parse(val)
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if err != nil {
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return "", err
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}
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// sanitize the url query params
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sanitizedQueryValues := make(url.Values, 0)
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queryValues := u.Query()
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for k, vals := range queryValues {
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sk := html.EscapeString(k)
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for _, v := range vals {
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sv := v
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sanitizedQueryValues.Add(sk, sv)
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}
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// we use parseQuery but not u.Query to keep the order not change because
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// url.Values is a map which has a random order.
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queryValues, err := parseQuery(u.RawQuery)
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if err != nil {
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return "", err
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}
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u.RawQuery = sanitizedQueryValues.Encode()
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// sanitize the url query params
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for i, query := range queryValues {
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queryValues[i].Key = html.EscapeString(query.Key)
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}
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u.RawQuery = encodeQueries(queryValues)
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// u.String() will also sanitize host/scheme/user/pass
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return u.String(), nil
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}
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@ -158,7 +215,7 @@ func (p *Policy) writeLinkableBuf(buff *bytes.Buffer, token *html.Token) {
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tokenBuff.WriteString(html.EscapeString(attr.Val))
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continue
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}
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u, err := sanitizedUrl(u)
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u, err := sanitizedURL(u)
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if err == nil {
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tokenBuff.WriteString(u)
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} else {
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@ -576,7 +576,7 @@ github.com/mgechev/revive/rule
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# github.com/mholt/archiver/v3 v3.5.0
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## explicit
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github.com/mholt/archiver/v3
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# github.com/microcosm-cc/bluemonday v1.0.4
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# github.com/microcosm-cc/bluemonday v1.0.4 => github.com/lunny/bluemonday v1.0.5-0.20201227154428-ca34796141e8
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## explicit
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github.com/microcosm-cc/bluemonday
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# github.com/minio/md5-simd v1.1.0
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@ -998,3 +998,4 @@ xorm.io/xorm/names
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xorm.io/xorm/schemas
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xorm.io/xorm/tags
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# github.com/hashicorp/go-version => github.com/6543/go-version v1.2.4
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# github.com/microcosm-cc/bluemonday => github.com/lunny/bluemonday v1.0.5-0.20201227154428-ca34796141e8
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