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package fasthttp
import (
"bufio"
"bytes"
"encoding/base64"
"encoding/binary"
"fmt"
"net/textproto"
"net/url"
"reflect"
"strings"
"testing"
)
func FuzzCookieParse(f *testing.F) {
f.Add([]byte(`xxx=yyy`))
f.Add([]byte(`xxx=yyy; expires=Tue, 10 Nov 2009 23:00:00 GMT; domain=foobar.com; path=/a/b`))
f.Add([]byte(" \n\t\""))
f.Fuzz(func(t *testing.T, cookie []byte) {
var c Cookie
_ = c.ParseBytes(cookie)
w := bytes.Buffer{}
if _, err := c.WriteTo(&w); err != nil {
t.Fatalf("unexpected error: %v", err)
}
})
}
func FuzzVisitHeaderParams(f *testing.F) {
f.Add([]byte(`application/json; v=1; foo=bar; q=0.938; param=param; param="big fox"; q=0.43`))
f.Add([]byte(`*/*`))
f.Add([]byte(`\\`))
f.Add([]byte(`text/plain; foo="\\\"\'\\''\'"`))
f.Fuzz(func(t *testing.T, header []byte) {
VisitHeaderParams(header, func(key, value []byte) bool {
if len(key) == 0 {
t.Errorf("Unexpected length zero parameter, failed input was: %s", header)
}
return true
})
})
}
func FuzzResponseReadLimitBody(f *testing.F) {
f.Add([]byte("HTTP/1.1 200 OK\r\nContent-Type: aa\r\nContent-Length: 10\r\n\r\n9876543210"), 1024)
f.Add([]byte(" 0\nTrAnsfer-EnCoding:0\n\n0\r\n1:0\n 00\n 000\n\n"), 24922)
f.Add([]byte(" 0\n0:\n 0\n :\n"), 1048532)
// Case found by OSS-Fuzz.
b, err := base64.StdEncoding.DecodeString("oeYAdyAyClRyYW5zZmVyLUVuY29kaW5nOmlka7AKCjANCiA6MAogOgogOgogPgAAAAAAAAAgICAhICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgCiA6CiA6CiAgOgogOgogYDogCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIAogOgogOgogIDoKIDoKIGA6IAoKIDoKBSAgOgogOgogOgogOgogIDoKIDoKIGA6IAAgIAA6CiA6CiA6CjoKIDoKIDoWCiAyIOgKIDogugogOjAKIDoKIDoKBSAgOgogOgogOgogOgogIDoKIDoKIGA6IAAgIAAAAAAAAABaYQ==")
if err != nil {
panic(err)
}
f.Add(b[:len(b)-2], int(binary.LittleEndian.Uint16(b[len(b)-2:])))
f.Fuzz(func(t *testing.T, body []byte, maxBodySize int) {
if len(body) > 1024*1024 || maxBodySize > 1024*1024 {
return
}
// Only test with a max for the body, otherwise a very large Content-Length will just OOM.
if maxBodySize <= 0 {
return
}
res := AcquireResponse()
defer ReleaseResponse(res)
_ = res.ReadLimitBody(bufio.NewReader(bytes.NewReader(body)), maxBodySize)
})
}
func FuzzRequestReadLimitBody(f *testing.F) {
f.Add([]byte("POST /a HTTP/1.1\r\nHost: a.com\r\nTransfer-Encoding: chunked\r\nContent-Type: aa\r\n\r\n6\r\nfoobar\r\n3\r\nbaz\r\n0\r\nfoobar\r\n\r\n"), 1024)
f.Fuzz(func(t *testing.T, body []byte, maxBodySize int) {
if len(body) > 1024*1024 || maxBodySize > 1024*1024 {
return
}
// Only test with a max for the body, otherwise a very large Content-Length will just OOM.
if maxBodySize <= 0 {
return
}
req := AcquireRequest()
defer ReleaseRequest(req)
_ = req.ReadLimitBody(bufio.NewReader(bytes.NewReader(body)), maxBodySize)
})
}
func FuzzURIUpdateBytes(f *testing.F) {
f.Add([]byte(`http://foobar.com/aaa/bb?cc`))
f.Add([]byte(`//foobar.com/aaa/bb?cc`))
f.Add([]byte(`/aaa/bb?cc`))
f.Add([]byte(`xx?yy=abc`))
f.Fuzz(func(t *testing.T, uri []byte) {
var u URI
u.UpdateBytes(uri)
w := bytes.Buffer{}
if _, err := u.WriteTo(&w); err != nil {
t.Fatalf("unexpected error: %v", err)
}
})
}
func FuzzURIParse(f *testing.F) {
f.Add(`http://foobar.com/aaa/bb?cc#dd`)
f.Add(`http://google.com?github.com`)
f.Add(`http://google.com#@github.com`)
f.Fuzz(func(t *testing.T, uri string) {
var u URI
uri = strings.ToLower(uri)
if !strings.HasPrefix(uri, "http://") && !strings.HasPrefix(uri, "https://") {
return
}
if u.Parse(nil, []byte(uri)) != nil {
return
}
nu, err := url.Parse(uri)
if err != nil {
return
}
if string(u.Host()) != nu.Host {
t.Fatalf("%q: unexpected host: %q. Expecting %q", uri, u.Host(), nu.Host)
}
if string(u.QueryString()) != nu.RawQuery {
t.Fatalf("%q: unexpected query string: %q. Expecting %q", uri, u.QueryString(), nu.RawQuery)
}
})
}
func FuzzTestHeaderScanner(f *testing.F) {
f.Add([]byte("Host: example.com\r\nUser-Agent: Go-http-client/1.1\r\nAccept-Encoding: gzip, deflate\r\n\r\n"))
f.Add([]byte("Content-Type: application/x-www-form-urlencoded\r\nContent-Length: 27\r\n\r\nname=John+Doe&age=30"))
f.Fuzz(func(t *testing.T, data []byte) {
if !bytes.Contains(data, []byte("\r\n\r\n")) {
return
}
if len(data) > 1024*1024 {
return
}
t.Logf("%q", data)
tmp, herr := textproto.NewReader(bufio.NewReader(bytes.NewReader(data))).ReadMIMEHeader()
h := map[string][]string(tmp)
var s headerScanner
s.b = data
f := make(map[string][]string)
for s.next() {
// ReadMIMEHeader normalizes header keys, headerScanner doesn't by default.
normalizeHeaderKey(s.key, false)
// textproto.ReadMIMEHeader will validate the header value, since we compare
// errors we should do this as well.
for _, c := range s.value {
if !validHeaderValueByte(c) {
s.err = fmt.Errorf("malformed MIME header: invalid byte %q in value %q for key %q", c, s.value, s.key)
}
}
if s.err != nil {
break
}
key := string(s.key)
value := string(s.value)
if _, ok := f[key]; !ok {
f[key] = []string{}
}
f[key] = append(f[key], value)
}
if s.err != nil && herr == nil {
t.Errorf("unexpected error from headerScanner: %v: %v", s.err, h)
} else if s.err == nil && herr != nil {
t.Errorf("unexpected error from textproto.NewReader: %v: %v", herr, f)
}
if !reflect.DeepEqual(h, f) {
t.Errorf("headers mismatch:\ntextproto: %v\nfasthttp: %v", h, f)
}
})
}
func FuzzRequestReadLimitBodyAllocations(f *testing.F) {
f.Add([]byte("POST /a HTTP/1.1\r\nHost: a.com\r\nTransfer-Encoding: chunked\r\nContent-Type: aa\r\n\r\n6\r\nfoobar\r\n3\r\nbaz\r\n0\r\nfoobar\r\n\r\n"), 1024)
f.Add([]byte("POST /a HTTP/1.1\r\nHost: a.com\r\nWithTabs: \t v1 \t\r\nWithTabs-Start: \t \t v1 \r\nWithTabs-End: v1 \t \t\t\t\r\nWithTabs-Multi-Line: \t v1 \t;\r\n \t v2 \t;\r\n\t v3\r\n\r\n"), 1024)
f.Fuzz(func(t *testing.T, body []byte, maxBodySize int) {
if len(body) > 1024*1024 || maxBodySize > 1024*1024 {
return
}
// Only test with a max for the body, otherwise a very large Content-Length will just OOM.
if maxBodySize <= 0 {
return
}
t.Logf("%d %q", maxBodySize, body)
req := Request{}
a := bytes.NewReader(body)
b := bufio.NewReader(a)
if err := req.ReadLimitBody(b, maxBodySize); err != nil {
return
}
n := testing.AllocsPerRun(200, func() {
req.Reset()
a.Reset(body)
b.Reset(a)
_ = req.ReadLimitBody(b, maxBodySize)
})
if n != 0 {
t.Fatalf("expected 0 allocations, got %f", n)
}
})
}
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