Firebase身份验证用户照片URL返回404
[英]firebase auth user photo URL returns 404
问题描述
I've been using firebase authentication for a few months in a swift application, and suddenly today the app crashed due to the user photo URL leading to 404 page. 
我在一个快速的应用程序中使用Firebase身份验证已有几个月了，今天突然由于用户照片URL指向404页面，该应用程序崩溃了。
To get the picture I use: 要获得图片，我使用：
let user = FIRAuth.auth()?.currentUser
userPhoto = user.photoURL?.absoluteString
The userPhoto URL leads to the broken robot 404 page, but only for one specific user. userPhoto URL导致损坏的机械手404页面，但仅适用于一个特定用户。 When signing in to this problematic google account, the profile picture is displayed properly. 登录有问题的Google帐户时，个人资料图片会正确显示。
I tried signing out and back in, as well as changing the profile picture for the account. 我尝试退出并重新登录，以及更改帐户的个人资料图片。 Any ideas? 有任何想法吗？
1 个解决方案
解决方案1
0 2017-12-14 16:39:26
I don't know IOS/Swift but I am having same issue. 我不知道IOS / Swift，但是我遇到了同样的问题。 It seems Firebase Auth caches photoURL's and I haven't been able to figure out how to force a refresh but a solution is to show a default image onerror. 似乎Firebase Auth缓存了photoURL，但我一直无法弄清楚如何强制刷新，但是解决方案是显示默认图像onerror。 In javascript/HTML, it would look like below. 在javascript / HTML中，如下所示。 NOTE: There is a CSS solution using :before and :after pseudo-classes for showing a custom fallback image but it's a bit hacky so I wrote this. 注意：有一个CSS解决方案使用:before和:after伪类来显示自定义的后备图像，但是它有点hacky，所以我写了这个。 I know it's not swift but maybe you can use it as a guide to coding something similar for IOS. 我知道它并不迅速，但是也许您可以将其用作对类似IOS进行编码的指南。
function returnPhotoURL(){
return new Promise(function(resolve, reject){
var img = new Image();
//if the user does not have a photoURL let's try and get one from gravatar
if (!firebase.auth().currentUser.photoURL) {
//first we have to see if user han an email
if(firebase.auth().currentUser.email){
//set sign-in-button background image to gravatar url
img.addEventListener('load', function() {
resolve (getGravatar(firebase.auth().currentUser.email, 48));
}, false);
img.addEventListener('error', function() {
resolve ('//rack.pub/media/fallbackImage.png');
}, false);
img.src = getGravatar(firebase.auth().currentUser.email, 48);
} else {
resolve ('//rack.pub/media/fallbackImage.png');
}
} else {
img.addEventListener('load', function() {
resolve (firebase.auth().currentUser.photoURL);
}, false);
img.addEventListener('error', function() {
resolve ('https://rack.pub/media/fallbackImage.png');
}, false);
img.src = firebase.auth().currentUser.photoURL;
}
});
}
function getGravatar(email, size) {
// MD5 (Message-Digest Algorithm) by WebToolkit
var MD5 = function(s) {
function L(k, d) {
return (k << d) | (k >>> (32 - d))
}
function K(G, k) {
var I, d, F, H, x;
F = (G & 2147483648);
H = (k & 2147483648);
I = (G & 1073741824);
d = (k & 1073741824);
x = (G & 1073741823) + (k & 1073741823);
if (I & d) {
return (x ^ 2147483648 ^ F ^ H)
}
if (I | d) {
if (x & 1073741824) {
return (x ^ 3221225472 ^ F ^ H)
}
else {
return (x ^ 1073741824 ^ F ^ H)
}
}
else {
return (x ^ F ^ H)
}
}
function r(d, F, k) {
return (d & F) | ((~d) & k)
}
function q(d, F, k) {
return (d & k) | (F & (~k))
}
function p(d, F, k) {
return (d ^ F ^ k)
}
function n(d, F, k) {
return (F ^ (d | (~k)))
}
function u(G, F, aa, Z, k, H, I) {
G = K(G, K(K(r(F, aa, Z), k), I));
return K(L(G, H), F)
}
function f(G, F, aa, Z, k, H, I) {
G = K(G, K(K(q(F, aa, Z), k), I));
return K(L(G, H), F)
}
function D(G, F, aa, Z, k, H, I) {
G = K(G, K(K(p(F, aa, Z), k), I));
return K(L(G, H), F)
}
function t(G, F, aa, Z, k, H, I) {
G = K(G, K(K(n(F, aa, Z), k), I));
return K(L(G, H), F)
}
function e(G) {
var Z;
var F = G.length;
var x = F + 8;
var k = (x - (x % 64)) / 64;
var I = (k + 1) * 16;
var aa = Array(I - 1);
var d = 0;
var H = 0;
while (H < F) {
Z = (H - (H % 4)) / 4;
d = (H % 4) * 8;
aa[Z] = (aa[Z] | (G.charCodeAt(H) << d));
H++
}
Z = (H - (H % 4)) / 4;
d = (H % 4) * 8;
aa[Z] = aa[Z] | (128 << d);
aa[I - 2] = F << 3;
aa[I - 1] = F >>> 29;
return aa
}
function B(x) {
var k = "",
F = "",
G, d;
for (d = 0; d <= 3; d++) {
G = (x >>> (d * 8)) & 255;
F = "0" + G.toString(16);
k = k + F.substr(F.length - 2, 2)
}
return k
}
function J(k) {
k = k.replace(/rn/g, "n");
var d = "";
for (var F = 0; F < k.length; F++) {
var x = k.charCodeAt(F);
if (x < 128) {
d += String.fromCharCode(x)
}
else {
if ((x > 127) && (x < 2048)) {
d += String.fromCharCode((x >> 6) | 192);
d += String.fromCharCode((x & 63) | 128)
}
else {
d += String.fromCharCode((x >> 12) | 224);
d += String.fromCharCode(((x >> 6) & 63) | 128);
d += String.fromCharCode((x & 63) | 128)
}
}
}
return d
}
var C = Array();
var P, h, E, v, g, Y, X, W, V;
var S = 7,
Q = 12,
N = 17,
M = 22;
var A = 5,
z = 9,
y = 14,
w = 20;
var o = 4,
m = 11,
l = 16,
j = 23;
var U = 6,
T = 10,
R = 15,
O = 21;
s = J(s);
C = e(s);
Y = 1732584193;
X = 4023233417;
W = 2562383102;
V = 271733878;
for (P = 0; P < C.length; P += 16) {
h = Y;
E = X;
v = W;
g = V;
Y = u(Y, X, W, V, C[P + 0], S, 3614090360);
V = u(V, Y, X, W, C[P + 1], Q, 3905402710);
W = u(W, V, Y, X, C[P + 2], N, 606105819);
X = u(X, W, V, Y, C[P + 3], M, 3250441966);
Y = u(Y, X, W, V, C[P + 4], S, 4118548399);
V = u(V, Y, X, W, C[P + 5], Q, 1200080426);
W = u(W, V, Y, X, C[P + 6], N, 2821735955);
X = u(X, W, V, Y, C[P + 7], M, 4249261313);
Y = u(Y, X, W, V, C[P + 8], S, 1770035416);
V = u(V, Y, X, W, C[P + 9], Q, 2336552879);
W = u(W, V, Y, X, C[P + 10], N, 4294925233);
X = u(X, W, V, Y, C[P + 11], M, 2304563134);
Y = u(Y, X, W, V, C[P + 12], S, 1804603682);
V = u(V, Y, X, W, C[P + 13], Q, 4254626195);
W = u(W, V, Y, X, C[P + 14], N, 2792965006);
X = u(X, W, V, Y, C[P + 15], M, 1236535329);
Y = f(Y, X, W, V, C[P + 1], A, 4129170786);
V = f(V, Y, X, W, C[P + 6], z, 3225465664);
W = f(W, V, Y, X, C[P + 11], y, 643717713);
X = f(X, W, V, Y, C[P + 0], w, 3921069994);
Y = f(Y, X, W, V, C[P + 5], A, 3593408605);
V = f(V, Y, X, W, C[P + 10], z, 38016083);
W = f(W, V, Y, X, C[P + 15], y, 3634488961);
X = f(X, W, V, Y, C[P + 4], w, 3889429448);
Y = f(Y, X, W, V, C[P + 9], A, 568446438);
V = f(V, Y, X, W, C[P + 14], z, 3275163606);
W = f(W, V, Y, X, C[P + 3], y, 4107603335);
X = f(X, W, V, Y, C[P + 8], w, 1163531501);
Y = f(Y, X, W, V, C[P + 13], A, 2850285829);
V = f(V, Y, X, W, C[P + 2], z, 4243563512);
W = f(W, V, Y, X, C[P + 7], y, 1735328473);
X = f(X, W, V, Y, C[P + 12], w, 2368359562);
Y = D(Y, X, W, V, C[P + 5], o, 4294588738);
V = D(V, Y, X, W, C[P + 8], m, 2272392833);
W = D(W, V, Y, X, C[P + 11], l, 1839030562);
X = D(X, W, V, Y, C[P + 14], j, 4259657740);
Y = D(Y, X, W, V, C[P + 1], o, 2763975236);
V = D(V, Y, X, W, C[P + 4], m, 1272893353);
W = D(W, V, Y, X, C[P + 7], l, 4139469664);
X = D(X, W, V, Y, C[P + 10], j, 3200236656);
Y = D(Y, X, W, V, C[P + 13], o, 681279174);
V = D(V, Y, X, W, C[P + 0], m, 3936430074);
W = D(W, V, Y, X, C[P + 3], l, 3572445317);
X = D(X, W, V, Y, C[P + 6], j, 76029189);
Y = D(Y, X, W, V, C[P + 9], o, 3654602809);
V = D(V, Y, X, W, C[P + 12], m, 3873151461);
W = D(W, V, Y, X, C[P + 15], l, 530742520);
X = D(X, W, V, Y, C[P + 2], j, 3299628645);
Y = t(Y, X, W, V, C[P + 0], U, 4096336452);
V = t(V, Y, X, W, C[P + 7], T, 1126891415);
W = t(W, V, Y, X, C[P + 14], R, 2878612391);
X = t(X, W, V, Y, C[P + 5], O, 4237533241);
Y = t(Y, X, W, V, C[P + 12], U, 1700485571);
V = t(V, Y, X, W, C[P + 3], T, 2399980690);
W = t(W, V, Y, X, C[P + 10], R, 4293915773);
X = t(X, W, V, Y, C[P + 1], O, 2240044497);
Y = t(Y, X, W, V, C[P + 8], U, 1873313359);
V = t(V, Y, X, W, C[P + 15], T, 4264355552);
W = t(W, V, Y, X, C[P + 6], R, 2734768916);
X = t(X, W, V, Y, C[P + 13], O, 1309151649);
Y = t(Y, X, W, V, C[P + 4], U, 4149444226);
V = t(V, Y, X, W, C[P + 11], T, 3174756917);
W = t(W, V, Y, X, C[P + 2], R, 718787259);
X = t(X, W, V, Y, C[P + 9], O, 3951481745);
Y = K(Y, h);
X = K(X, E);
W = K(W, v);
V = K(V, g)
}
var i = B(Y) + B(X) + B(W) + B(V);
return i.toLowerCase()
};
var size = size || 80;
return 'https://www.gravatar.com/avatar/' + MD5(email) + '.jpg?s=' + size;
}
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