working commit
This commit is contained in:
-202
@@ -1,202 +0,0 @@
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Apache License
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Version 2.0, January 2004
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http://www.apache.org/licenses/
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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1. Definitions.
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"License" shall mean the terms and conditions for use, reproduction,
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and distribution as defined by Sections 1 through 9 of this document.
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END OF TERMS AND CONDITIONS
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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Copyright {yyyy} {name of copyright owner}
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Licensed under the Apache License, Version 2.0 (the "License");
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See the License for the specific language governing permissions and
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limitations under the License.
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-27
@@ -1,27 +0,0 @@
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package challenge
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import (
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"net/url"
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"strings"
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)
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||||
// FROM: https://golang.org/src/net/http/http.go
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||||
// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
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||||
// return true if the string includes a port.
|
||||
func hasPort(s string) bool { return strings.LastIndex(s, ":") > strings.LastIndex(s, "]") }
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// FROM: http://golang.org/src/net/http/transport.go
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||||
var portMap = map[string]string{
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"http": "80",
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"https": "443",
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}
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// canonicalAddr returns url.Host but always with a ":port" suffix
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// FROM: http://golang.org/src/net/http/transport.go
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func canonicalAddr(url *url.URL) string {
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addr := url.Host
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if !hasPort(addr) {
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return addr + ":" + portMap[url.Scheme]
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}
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return addr
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}
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Generated
Vendored
-237
@@ -1,237 +0,0 @@
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package challenge
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import (
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"fmt"
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"net/http"
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"net/url"
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"strings"
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"sync"
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)
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// Challenge carries information from a WWW-Authenticate response header.
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// See RFC 2617.
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type Challenge struct {
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// Scheme is the auth-scheme according to RFC 2617
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Scheme string
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// Parameters are the auth-params according to RFC 2617
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||||
Parameters map[string]string
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}
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// Manager manages the challenges for endpoints.
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// The challenges are pulled out of HTTP responses. Only
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// responses which expect challenges should be added to
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// the manager, since a non-unauthorized request will be
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// viewed as not requiring challenges.
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type Manager interface {
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// GetChallenges returns the challenges for the given
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// endpoint URL.
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GetChallenges(endpoint url.URL) ([]Challenge, error)
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// AddResponse adds the response to the challenge
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// manager. The challenges will be parsed out of
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// the WWW-Authenicate headers and added to the
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// URL which was produced the response. If the
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// response was authorized, any challenges for the
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// endpoint will be cleared.
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AddResponse(resp *http.Response) error
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}
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// NewSimpleManager returns an instance of
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// Manger which only maps endpoints to challenges
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// based on the responses which have been added the
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// manager. The simple manager will make no attempt to
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// perform requests on the endpoints or cache the responses
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// to a backend.
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func NewSimpleManager() Manager {
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return &simpleManager{
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Challenges: make(map[string][]Challenge),
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}
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}
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type simpleManager struct {
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sync.RWMutex
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Challenges map[string][]Challenge
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}
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func normalizeURL(endpoint *url.URL) {
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endpoint.Host = strings.ToLower(endpoint.Host)
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endpoint.Host = canonicalAddr(endpoint)
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}
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func (m *simpleManager) GetChallenges(endpoint url.URL) ([]Challenge, error) {
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normalizeURL(&endpoint)
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m.RLock()
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defer m.RUnlock()
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challenges := m.Challenges[endpoint.String()]
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return challenges, nil
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}
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func (m *simpleManager) AddResponse(resp *http.Response) error {
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challenges := ResponseChallenges(resp)
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if resp.Request == nil {
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return fmt.Errorf("missing request reference")
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}
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urlCopy := url.URL{
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Path: resp.Request.URL.Path,
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Host: resp.Request.URL.Host,
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Scheme: resp.Request.URL.Scheme,
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}
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normalizeURL(&urlCopy)
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||||
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m.Lock()
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defer m.Unlock()
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m.Challenges[urlCopy.String()] = challenges
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return nil
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}
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// Octet types from RFC 2616.
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type octetType byte
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||||
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||||
var octetTypes [256]octetType
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||||
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||||
const (
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||||
isToken octetType = 1 << iota
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||||
isSpace
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||||
)
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||||
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||||
func init() {
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||||
// OCTET = <any 8-bit sequence of data>
|
||||
// CHAR = <any US-ASCII character (octets 0 - 127)>
|
||||
// CTL = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
|
||||
// CR = <US-ASCII CR, carriage return (13)>
|
||||
// LF = <US-ASCII LF, linefeed (10)>
|
||||
// SP = <US-ASCII SP, space (32)>
|
||||
// HT = <US-ASCII HT, horizontal-tab (9)>
|
||||
// <"> = <US-ASCII double-quote mark (34)>
|
||||
// CRLF = CR LF
|
||||
// LWS = [CRLF] 1*( SP | HT )
|
||||
// TEXT = <any OCTET except CTLs, but including LWS>
|
||||
// separators = "(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | <">
|
||||
// | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT
|
||||
// token = 1*<any CHAR except CTLs or separators>
|
||||
// qdtext = <any TEXT except <">>
|
||||
|
||||
for c := 0; c < 256; c++ {
|
||||
var t octetType
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||||
isCtl := c <= 31 || c == 127
|
||||
isChar := 0 <= c && c <= 127
|
||||
isSeparator := strings.ContainsRune(" \t\"(),/:;<=>?@[]\\{}", rune(c))
|
||||
if strings.ContainsRune(" \t\r\n", rune(c)) {
|
||||
t |= isSpace
|
||||
}
|
||||
if isChar && !isCtl && !isSeparator {
|
||||
t |= isToken
|
||||
}
|
||||
octetTypes[c] = t
|
||||
}
|
||||
}
|
||||
|
||||
// ResponseChallenges returns a list of authorization challenges
|
||||
// for the given http Response. Challenges are only checked if
|
||||
// the response status code was a 401.
|
||||
func ResponseChallenges(resp *http.Response) []Challenge {
|
||||
if resp.StatusCode == http.StatusUnauthorized {
|
||||
// Parse the WWW-Authenticate Header and store the challenges
|
||||
// on this endpoint object.
|
||||
return parseAuthHeader(resp.Header)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func parseAuthHeader(header http.Header) []Challenge {
|
||||
challenges := []Challenge{}
|
||||
for _, h := range header[http.CanonicalHeaderKey("WWW-Authenticate")] {
|
||||
v, p := parseValueAndParams(h)
|
||||
if v != "" {
|
||||
challenges = append(challenges, Challenge{Scheme: v, Parameters: p})
|
||||
}
|
||||
}
|
||||
return challenges
|
||||
}
|
||||
|
||||
func parseValueAndParams(header string) (value string, params map[string]string) {
|
||||
params = make(map[string]string)
|
||||
value, s := expectToken(header)
|
||||
if value == "" {
|
||||
return
|
||||
}
|
||||
value = strings.ToLower(value)
|
||||
s = "," + skipSpace(s)
|
||||
for strings.HasPrefix(s, ",") {
|
||||
var pkey string
|
||||
pkey, s = expectToken(skipSpace(s[1:]))
|
||||
if pkey == "" {
|
||||
return
|
||||
}
|
||||
if !strings.HasPrefix(s, "=") {
|
||||
return
|
||||
}
|
||||
var pvalue string
|
||||
pvalue, s = expectTokenOrQuoted(s[1:])
|
||||
if pvalue == "" {
|
||||
return
|
||||
}
|
||||
pkey = strings.ToLower(pkey)
|
||||
params[pkey] = pvalue
|
||||
s = skipSpace(s)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func skipSpace(s string) (rest string) {
|
||||
i := 0
|
||||
for ; i < len(s); i++ {
|
||||
if octetTypes[s[i]]&isSpace == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
return s[i:]
|
||||
}
|
||||
|
||||
func expectToken(s string) (token, rest string) {
|
||||
i := 0
|
||||
for ; i < len(s); i++ {
|
||||
if octetTypes[s[i]]&isToken == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
return s[:i], s[i:]
|
||||
}
|
||||
|
||||
func expectTokenOrQuoted(s string) (value string, rest string) {
|
||||
if !strings.HasPrefix(s, "\"") {
|
||||
return expectToken(s)
|
||||
}
|
||||
s = s[1:]
|
||||
for i := 0; i < len(s); i++ {
|
||||
switch s[i] {
|
||||
case '"':
|
||||
return s[:i], s[i+1:]
|
||||
case '\\':
|
||||
p := make([]byte, len(s)-1)
|
||||
j := copy(p, s[:i])
|
||||
escape := true
|
||||
for i = i + 1; i < len(s); i++ {
|
||||
b := s[i]
|
||||
switch {
|
||||
case escape:
|
||||
escape = false
|
||||
p[j] = b
|
||||
j++
|
||||
case b == '\\':
|
||||
escape = true
|
||||
case b == '"':
|
||||
return string(p[:j]), s[i+1:]
|
||||
default:
|
||||
p[j] = b
|
||||
j++
|
||||
}
|
||||
}
|
||||
return "", ""
|
||||
}
|
||||
}
|
||||
return "", ""
|
||||
}
|
||||
Reference in New Issue
Block a user