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cookies.go
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cookies.go
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package azuretls
import (
"bytes"
http "github.com/Noooste/fhttp"
"golang.org/x/net/http/httpguts"
"net/textproto"
"strconv"
"strings"
"time"
)
var cookieNameSanitizer = strings.NewReplacer("\n", "-", "\r", "-")
func CookiesToString(cookies []*http.Cookie) string {
var buf bytes.Buffer
var length = 0
for _, el := range cookies {
length += len(el.Name) + len(el.Value) + 3
}
buf.Grow(length)
for _, el := range cookies {
buf.WriteString(cookieNameSanitizer.Replace(el.Name))
buf.WriteByte('=')
buf.WriteString(cookieNameSanitizer.Replace(el.Value))
buf.WriteString("; ")
}
buf.Truncate(buf.Len() - 2)
return buf.String()
}
func GetCookiesMap(cookies []*http.Cookie) map[string]string {
var result = make(map[string]string, len(cookies))
for _, cookie := range cookies {
result[cookie.Name] = cookie.Value
}
return result
}
func ReadSetCookies(h http.Header) []*http.Cookie {
cookieCount := len(h["Set-Cookie"])
if cookieCount == 0 {
return []*http.Cookie{}
}
cookies := make([]*http.Cookie, 0, cookieCount)
for _, line := range h["Set-Cookie"] {
parts := strings.Split(textproto.TrimString(line), ";")
if len(parts) == 1 && parts[0] == "" {
continue
}
parts[0] = textproto.TrimString(parts[0])
j := strings.Index(parts[0], "=")
if j < 0 {
continue
}
name, value := parts[0][:j], parts[0][j+1:]
if !isCookieNameValid(name) {
continue
}
value, ok := parseCookieValue(value, true)
if !ok {
continue
}
c := &http.Cookie{
Name: name,
Value: value,
Raw: line,
}
for i := 1; i < len(parts); i++ {
parts[i] = textproto.TrimString(parts[i])
if len(parts[i]) == 0 {
continue
}
attr, val := parts[i], ""
if j := strings.Index(attr, "="); j >= 0 {
attr, val = attr[:j], attr[j+1:]
}
lowerAttr := strings.ToLower(attr)
val, ok = parseCookieValue(val, false)
if !ok {
c.Unparsed = append(c.Unparsed, parts[i])
continue
}
switch lowerAttr {
case "samesite":
lowerVal := strings.ToLower(val)
switch lowerVal {
case "lax":
c.SameSite = http.SameSiteLaxMode
case "strict":
c.SameSite = http.SameSiteStrictMode
case "none":
c.SameSite = http.SameSiteNoneMode
default:
c.SameSite = http.SameSiteDefaultMode
}
continue
case "secure":
c.Secure = true
continue
case "httponly":
c.HttpOnly = true
continue
case "domain":
c.Domain = val
continue
case "max-age":
secs, err := strconv.Atoi(val)
if err != nil || secs != 0 && val[0] == '0' {
break
}
if secs <= 0 {
secs = -1
}
c.MaxAge = secs
continue
case "expires":
c.RawExpires = val
exptime, err := time.Parse(time.RFC1123, val)
if err != nil {
exptime, err = time.Parse("Mon, 02-Jan-2006 15:04:05 MST", val)
if err != nil {
c.Expires = time.Time{}
break
}
}
c.Expires = exptime.UTC()
continue
case "path":
c.Path = val
continue
}
c.Unparsed = append(c.Unparsed, parts[i])
}
cookies = append(cookies, c)
}
return cookies
}
// Disallows illegal characters in cookie value. Ignores illegal character `"`, some cookies have the " value
func validCookieValueByte(b byte) bool {
return 0x20 <= b &&
b < 0x7f &&
// b != '"' &&
b != ';' &&
b != '\\'
}
func parseCookieValue(raw string, allowDoubleQuote bool) (string, bool) {
// Strip the quotes, if present.
if allowDoubleQuote && len(raw) > 1 && raw[0] == '"' && raw[len(raw)-1] == '"' {
raw = raw[1 : len(raw)-1]
}
for i := 0; i < len(raw); i++ {
if !validCookieValueByte(raw[i]) {
return "", false
}
}
return raw, true
}
func isCookieNameValid(raw string) bool {
if raw == "" {
return false
}
return strings.IndexFunc(raw, isNotToken) < 0
}
func isNotToken(r rune) bool {
return !httpguts.IsTokenRune(r)
}