我正在使用Vapor和SWIFT 3运行Xcode 8.1。
我向google发送了一个请求,以获得一个auth令牌,这样我就可以调用FireBaseDB API,但是我得到了错误:unsupported_ grant_type _type/无效的grant_type。
在developers.google.com上,它说我必须在URL中编码以下内容:https://www.googleapis.com/oauth2/v4/token + grant_type +断言,并将编码的URL传递到POST请求的正文中。我把它当作一根线传递。
我注意到从我的服务帐户下载的JSON文件中的私钥包含一些字符,比如/n、
let dateNow = Date()
var expDate = String(Int(dateNow.timeIntervalSince1970 + (60 * 60)))
var iatDate = String(Int(dateNow.timeIntervalSince1970))
let headerJWT = ["alg":"HS256","typ":"JWT"]
let jwtClaimSet =
["iss":"firebase-adminsdk-c7i48@fir-10c2e.iam.gserviceaccount.com",
"scope":"https://www.googleapis.com/auth/firebase.database",
"aud":"https://www.googleapis.com/oauth2/v4/token",
"exp": expDate,
"iat": iatDate]
//create and sign JSON Web Token
let jwt = try JWT(headers: Node(node: headerJWT),
payload: Node(node: jwtClaimSet),
signer: HS256(key:"-----BEGIN PRIVATE KEY-----\nMIIEvAWvQ== \n-----END PRIVATE KEY-----\n"))
// Store JSON Web Token
let JWTtoken = try jwt.createToken()
func createUrlWithString() -> NSURL {
var urlString = "https://www.googleapis.com/oauth2/v4/token"
urlString.append("?grant_type=")
urlString.append("urn:ietf:params:oauth:grant-type:jwt-bearer")
urlString.append("&assertion=")
urlString.append(JWTtoken)
return NSURL(string: urlString)!
}
// make the body input for our POST
let bodyURL = createUrlWithString().absoluteURL
drop.get("any") { request in
let response =
try drop.client.request(.other(method:"Post"),
"https://www.googleapis.com/oauth2/v4/token",
headers: ["Content-Type": "application/x-www-form-urlencoded"],
query: [:],
body: String(describing: bodyURL) )
let serverResp = response.headers
let serverBody = response.body.bytes
let serverJson = try JSON(bytes: serverBody!)
print(serverJson)
return "POST Request went through"
}更新
根据Karol的建议,我将grant_type和assertion参数作为POST请求参数传递。现在我得到了"error_description": Node.Node.string("SSL is required to perform this operation.")]))
func createUrlWithString() -> NSURL {
var urlString = "https://www.googleapis.com/oauth2/v4/token"
urlString.append("?grant_type=")
urlString.append("urn:ietf:params:oauth:grant-type:jwt-bearer")
urlString.append("&assertion=")
urlString.append(JWTtoken)
return NSURL(string: urlString)!
}
let response = try drop.client.request(.other(method:"Post"),
String(describing: bodyURL),
headers: ["Content-Type": "application/x-www-form-urlencoded"],
query: [:])发布于 2016-11-22 21:35:14
当您生成服务帐户凭据时,您需要记住以下几点,取自https://cloud.google.com/storage/docs/authentication:您可以通过为服务帐户创建OAuth客户端ID来在云平台控制台中创建私钥。您可以获得JSON和PKCS12格式的私钥:
如果在Google平台之外的生产环境中使用应用程序默认凭据,则需要使用JSON键。JSON键不能转换成其他格式,许多不同的编程语言和库都支持 PKCS12 (.p12)。如果需要,可以使用OpenSSL (请参阅将私钥转换为其他格式。)将密钥转换为其他格式。但是,PKCS12键不能转换为JSON格式。
cat /path/to/xxxx-privatekey.p12 | openssl pkcs12 -nodes -nocerts -passin pass:notasecret | openssl rsa > /path/to/secret.pem
openssl rsa -in /path/to/secret.pem -outform der -out /path/to/private.deropenssl base64 -in /path/to/private.der -out /path/to/Desktop/private.txt
在private.txt中,私钥是用base64编码的,最终可以用来为您签名JWT。然后,您可以使用签名的JWT调用Google。
import Vapor
import VaporJWT
let drop = Droplet()
var tokenID:String!
//set current date
let dateNow = Date()
// assign to expDate the validity period of the token returnd by OAuth server (3600 seconds)
var expDate = String(Int(dateNow.timeIntervalSince1970 + (60 * 60)))
// assign to iatDate the time when the call was made to request an access token
var iatDate = String(Int(dateNow.timeIntervalSince1970))
// the header of the JSON Web Token (first part of the JWT)
let headerJWT = ["alg":"RS256","typ":"JWT"]
// the claim set of the JSON Web Token
let jwtClaimSet =
["iss":"firebase-adminsdk-c7i38@fir-30c9e.iam.gserviceaccount.com",
"scope":"https://www.googleapis.com/auth/firebase.database",
"aud":"https://www.googleapis.com/oauth2/v4/token",
"exp": expDate,
"iat": iatDate]
//Using VaporJWT construct a JSON Web Token and sign it with RS256 algorithm
//The only signing algorithm supported by the Google OAuth 2.0 Authorization Server is RSA using SHA-256 hashing algorithm.
let jwt = try JWT(headers: Node(node: headerJWT), payload: Node(node:jwtClaimSet), encoding: Base64URLEncoding(), signer: RS256(encodedKey: "copy paste here what you have in private.txt as explained at point 7 above "))
// create the JSON Web Token
let JWTtoken = try jwt.createToken()
let grant_type = "urn:ietf:params:oauth:grant-type:jwt-bearer" // this value must not be changed
let unreserved = "*-._"
let allowed = NSMutableCharacterSet.alphanumeric()
allowed.addCharacters(in: unreserved)
// percent or URL encode grant_type
let grant_URLEncoded = grant_type.addingPercentEncoding(withAllowedCharacters: allowed as CharacterSet)
// create a string made of grant_type and assertion. NOTE!!! only grant_type's value is URL encoded.
//JSON Web Token value does not need to be URL encoded
var fullString = "grant_type=\(grant_URLEncoded!)&assertion=\(JWTtoken)"
//pass fullString in the body parameter
drop.get("call") { request in
let response = try drop.client.post("https://www.googleapis.com/oauth2/v4/token", headers: ["Content-Type": "application/x-www-form-urlencoded"], query: [:],body: fullString)
let serverResp = response.headers
let serverBody = response.body.bytes
let serverJson = try JSON(bytes: serverBody!)
print(serverJson)
return "Success"
}发布于 2016-11-19 20:04:19
您似乎没有在代码中正确设置grant_type:
urlString.append("?grant_type=")在您的例子中,可能是grant_type=authorization_code或grant_type=jwt-bearer
看来你把grant_type放错地方了。
更新
另外,我认为grant_type和断言参数不是作为请求头传递的,而是作为post请求参数传递的。
更新
我不太确定你是否使用了正确的方式来设置POST (body)参数。在这文档中,示例是如何使用post prams创建请求,如下所示:
try drop.client.request(.other(method: "POST"), "http://some-domain", headers: ["My": "Header"], query: ["key": "value"], body: [])https://stackoverflow.com/questions/40696026
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