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Merge pull request #178 from fisuda/hardening/support_kong
Support kong
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| /* | ||
| MIT License | ||
| Copyright (c) 2020-2021 Kazuhito Suda | ||
| This file is part of NGSI Go | ||
| https://github.com/lets-fiware/ngsi-go | ||
| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), to deal | ||
| in the Software without restriction, including without limitation the rights | ||
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| copies of the Software, and to permit persons to whom the Software is | ||
| furnished to do so, subject to the following conditions: | ||
| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| SOFTWARE. | ||
| */ | ||
|
|
||
| package ngsilib | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/http" | ||
| "net/url" | ||
| "path" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| // KongToken is ... | ||
| type KongToken struct { | ||
| ExpiresIn int64 `json:"expires_in"` | ||
| AccessToken string `json:"access_token"` | ||
| TokenType string `json:"token_type"` | ||
| } | ||
|
|
||
| type idmKong struct { | ||
| } | ||
|
|
||
| const ( | ||
| cKongService = 0 | ||
| cKongIdm = 1 | ||
| ) | ||
|
|
||
| func (i *idmKong) requestToken(ngsi *NGSI, client *Client, tokenInfo *TokenInfo) (*TokenInfo, error) { | ||
| const funcName = "requestTokenKong" | ||
|
|
||
| var err error | ||
| var res *http.Response | ||
| var body []byte | ||
| var payloads []string | ||
| broker := client.Server | ||
|
|
||
| payloads = append(payloads, fmt.Sprintf("grant_type=client_credentials&client_id=%s&client_secret=%s", broker.ClientID, broker.ClientSecret)) | ||
|
|
||
| for _, payload := range payloads { | ||
|
|
||
| headers := make(map[string]string) | ||
| u, _ := url.Parse(getKongHost(client.idmURL(), cKongService)) | ||
| idm := Client{URL: u, Headers: headers, HTTP: ngsi.HTTP} | ||
|
|
||
| idm.SetHeader(cContentType, cAppXWwwFormUrlencoded) | ||
|
|
||
| res, body, err = idm.HTTPPost(payload) | ||
| if err != nil { | ||
| return nil, &LibError{funcName, 1, err.Error(), err} | ||
| } | ||
|
|
||
| switch res.StatusCode { | ||
| default: | ||
| gNGSI.Logging(LogInfo, fmt.Sprintf("%s %d\n", funcName, res.StatusCode)) | ||
| continue | ||
| case http.StatusUnauthorized: | ||
| gNGSI.Logging(LogInfo, funcName+" Unauthorized\n") | ||
| continue | ||
| case http.StatusOK: | ||
| utime := ngsi.TimeLib.NowUnix() | ||
|
|
||
| var token KongToken | ||
| err = JSONUnmarshal(body, &token) | ||
| if err != nil { | ||
| return nil, &LibError{funcName, 2, err.Error(), err} | ||
| } | ||
|
|
||
| tokenInfo.Type = CKong | ||
| tokenInfo.Token = token.AccessToken | ||
| tokenInfo.Expires = time.Unix(utime+token.ExpiresIn, 0) | ||
| tokenInfo.RefreshToken = "" | ||
| tokenInfo.Kong = &token | ||
|
|
||
| return tokenInfo, nil | ||
| } | ||
| } | ||
|
|
||
| return nil, &LibError{funcName, 3, fmt.Sprintf("error %s %s", res.Status, string(body)), nil} | ||
| } | ||
|
|
||
| func (i *idmKong) revokeToken(ngsi *NGSI, client *Client, tokenInfo *TokenInfo) error { | ||
| const funcName = "revokeTokenKong" | ||
|
|
||
| headers := make(map[string]string) | ||
|
|
||
| u, _ := url.Parse(getKongHost(client.idmURL(), cKongIdm)) | ||
| u.Path = path.Join(u.Path, "/oauth2_tokens/", tokenInfo.Token) | ||
| idm := Client{URL: u, Headers: headers, HTTP: ngsi.HTTP} | ||
|
|
||
| res, body, err := idm.HTTPDelete(nil) | ||
| if err != nil { | ||
| return &LibError{funcName, 1, err.Error(), err} | ||
| } | ||
| if res.StatusCode != http.StatusNoContent { | ||
| return &LibError{funcName, 2, fmt.Sprintf("error %s %s", res.Status, string(body)), nil} | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (i *idmKong) getAuthHeader(token string) (string, string) { | ||
| return "Authorization", "Bearer " + token | ||
| } | ||
|
|
||
| func getKongHost(idm string, i int) string { | ||
| hosts := strings.Split(idm, ",") | ||
| if len(hosts) <= i { | ||
| return "http://kong-error/" | ||
| } | ||
| return hosts[i] | ||
| } |
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