{{ message }}
-
-
Notifications
You must be signed in to change notification settings - Fork 11
Expand file tree
/
Copy pathBasicAuthHandler.cs
More file actions
229 lines (211 loc) · 9.22 KB
/
Copy pathBasicAuthHandler.cs
File metadata and controls
229 lines (211 loc) · 9.22 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
using System.Net;
using System.Security.Claims;
using System.Text;
using Npgsql;
using NpgsqlTypes;
namespace NpgsqlRest.Auth;
public static class BasicAuthHandler
{
public static async Task HandleAsync(
HttpContext context,
RoutineEndpoint endpoint,
NpgsqlConnection connection,
CancellationToken cancellationToken = default)
{
var realm =
string.IsNullOrEmpty(endpoint.BasicAuth?.Realm) ?
string.IsNullOrEmpty(Options.AuthenticationOptions.BasicAuth.Realm) ? BasicAuthOptions.DefaultRealm : Options.AuthenticationOptions.BasicAuth.Realm :
endpoint.BasicAuth.Realm;
if (context.Request.IsSsl() is false)
{
if (Options.AuthenticationOptions.BasicAuth.SslRequirement == SslRequirement.Required)
{
Logger?.LogError("Basic authentication with SslRequirement 'Required' cannot be used when SSL is disabled.");
await Challenge(context, realm);
return;
}
if (Options.AuthenticationOptions.BasicAuth.SslRequirement == SslRequirement.Warning)
{
Logger?.LogWarning("Using Basic Authentication when SSL is disabled.");
}
else if (Options.AuthenticationOptions.BasicAuth.SslRequirement == SslRequirement.Ignore)
{
Logger?.LogDebug("WARNING: Using Basic Authentication when SSL is disabled.");
}
}
if (context.Request.Headers.TryGetValue("Authorization", out var authHeader) is false)
{
Logger?.LogDebug("No Authorization header found in request with Basic Authentication Realm {realm}. Request: {Path}",
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
return;
}
var authValue = authHeader.FirstOrDefault();
if (string.IsNullOrEmpty(authValue) || !authValue.StartsWith("Basic "))
{
Logger?.LogWarning("Authorization header value missing or malformed found in request with Basic Authentication Realm {realm}. Request: {Path}",
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
return;
}
ReadOnlySpan<char> decodedCredentials;
try
{
decodedCredentials = Encoding.UTF8.GetString(Convert.FromBase64String(authValue["Basic ".Length..]))
.AsSpan();
}
catch (Exception ex)
{
Logger?.LogError(ex, "Failed to decode Basic Authentication credentials in request with Basic Authentication Realm {realm}. Request: {Path}",
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
return;
}
var colonIndex = decodedCredentials.IndexOf(':');
if (colonIndex == -1)
{
Logger?.LogWarning("Authorization header value malformed found in request with Basic Authentication Realm {realm}. Request: {Path}",
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
return;
}
var username = decodedCredentials[..colonIndex].ToString();
var password = decodedCredentials[(colonIndex + 1)..].ToString();
if (string.IsNullOrEmpty(username) is true || string.IsNullOrEmpty(password) is true)
{
Logger?.LogWarning("Username or password missing in request with Basic Authentication Realm {realm}. Request: {Path}",
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
return;
}
string? basicAuthPassword = null;
if (endpoint.BasicAuth?.Users.ContainsKey(username) is true)
{
basicAuthPassword = endpoint.BasicAuth.Users[username];
}
else if (Options.AuthenticationOptions.BasicAuth?.Users.ContainsKey(username) is true)
{
basicAuthPassword = Options.AuthenticationOptions.BasicAuth.Users[username];
}
bool? passwordValid = null;
string? challengeCommand = endpoint.BasicAuth?.ChallengeCommand ?? Options.AuthenticationOptions.BasicAuth?.ChallengeCommand;
if (basicAuthPassword is not null)
{
if (Options.AuthenticationOptions.BasicAuth?.UseDefaultPasswordHasher is true)
{
if (Options.AuthenticationOptions.PasswordHasher is null)
{
Logger?.LogError("PasswordHasher not configured for Basic Authentication Realm {realm}. Request: {Path}",
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
return;
}
passwordValid =
Options.AuthenticationOptions.PasswordHasher?.VerifyHashedPassword(basicAuthPassword, password);
}
else
{
passwordValid = string.Equals(basicAuthPassword, password, StringComparison.Ordinal);
}
}
else
{
if (string.IsNullOrEmpty(challengeCommand) is true)
{
// misconfigured: no user with password configured and no challenge command
Logger?.LogError("No Basic Authentication user configured for user {username} in request with Basic Authentication Realm {realm}. Request: {Path}",
username,
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
return;
}
}
if (string.IsNullOrEmpty(challengeCommand) is false)
{
await using var command = connection.CreateCommand();
command.CommandText = challengeCommand;
var paramCount = command.CommandText.PgCountParams();
if (paramCount >= 1)
{
command.Parameters.Add(NpgsqlRestParameter.CreateTextParam(username));
}
if (paramCount >= 2)
{
command.Parameters.Add(NpgsqlRestParameter.CreateTextParam(password));
}
if (paramCount >= 3)
{
command.Parameters.Add(new NpgsqlParameter
{
NpgsqlDbType = NpgsqlDbType.Boolean,
Value = passwordValid.HasValue ? passwordValid.Value : DBNull.Value
});
}
if (paramCount >= 4)
{
command.Parameters.Add(NpgsqlRestParameter.CreateTextParam(realm));
}
if (paramCount >= 5)
{
command.Parameters.Add(NpgsqlRestParameter.CreateTextParam(endpoint.Path));
}
await LoginHandler.HandleAsync(
command,
context,
endpoint.RetryStrategy,
cancellationToken,
tracePath: string.Concat(endpoint.Method.ToString(), " ", endpoint.Path),
performHashVerification: false,
assignUserPrincipalToContext: true);
if (context.Response.StatusCode == (int)HttpStatusCode.OK)
{
return;
}
Logger?.LogError("ChallengeCommand denied user {username} in request with Basic Authentication Realm {realm}. Request: {Path}",
username,
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
// Response was already written by LoginHandler, don't write again
if (context.Response.HasStarted is false)
{
await Challenge(context, realm);
}
return;
}
if (passwordValid is true)
{
var principal = new ClaimsPrincipal(new ClaimsIdentity(
[
new Claim(Options.AuthenticationOptions.DefaultNameClaimType, username)
],
Options.AuthenticationOptions.DefaultAuthenticationType,
nameType: Options.AuthenticationOptions.DefaultNameClaimType,
roleType: Options.AuthenticationOptions.DefaultRoleClaimType));
context.User = principal;
}
else
{
Logger?.LogWarning("Invalid password for user {username} in request with Basic Authentication Realm {realm}. Request: {Path}",
username,
realm,
string.Concat(endpoint.Method.ToString(), endpoint.Path));
await Challenge(context, realm);
}
}
private static async ValueTask Challenge(HttpContext context, string realm)
{
context.Response.Headers.Append("WWW-Authenticate", string.Concat("Basic realm=\"", realm, "\""));
await Results.Problem(
type: null,
statusCode: 401,
title: "Unauthorized",
detail: null).ExecuteAsync(context);
}
}
You can’t perform that action at this time.