summaryrefslogtreecommitdiffstats
path: root/api/authentication.go
blob: fbfdb2cf4da2f2c6e524fddf2157ecc028732991 (plain)
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
// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.

package api

import (
	"github.com/mattermost/platform/einterfaces"
	"github.com/mattermost/platform/model"
	"github.com/mattermost/platform/utils"

	"net/http"
	"strings"
)

func checkPasswordAndAllCriteria(user *model.User, password string, mfaToken string) *model.AppError {
	if err := checkUserAdditionalAuthenticationCriteria(user, mfaToken); err != nil {
		return err
	}

	if err := checkUserPassword(user, password); err != nil {
		return err
	}

	return nil
}

// This to be used for places we check the users password when they are already logged in
func doubleCheckPassword(user *model.User, password string) *model.AppError {
	if err := checkUserLoginAttempts(user); err != nil {
		return err
	}

	if err := checkUserPassword(user, password); err != nil {
		return err
	}

	return nil
}

func checkUserPassword(user *model.User, password string) *model.AppError {
	if !model.ComparePassword(user.Password, password) {
		if result := <-Srv.Store.User().UpdateFailedPasswordAttempts(user.Id, user.FailedAttempts+1); result.Err != nil {
			return result.Err
		}

		return model.NewLocAppError("checkUserPassword", "api.user.check_user_password.invalid.app_error", nil, "user_id="+user.Id)
	} else {
		if result := <-Srv.Store.User().UpdateFailedPasswordAttempts(user.Id, 0); result.Err != nil {
			return result.Err
		}

		return nil
	}
}

func checkLdapUserPasswordAndAllCriteria(ldapId *string, password string, mfaToken string) (*model.User, *model.AppError) {
	ldapInterface := einterfaces.GetLdapInterface()

	if ldapInterface == nil || ldapId == nil {
		err := model.NewLocAppError("doLdapAuthentication", "api.user.login_ldap.not_available.app_error", nil, "")
		err.StatusCode = http.StatusNotImplemented
		return nil, err
	}

	var user *model.User
	if ldapUser, err := ldapInterface.DoLogin(*ldapId, password); err != nil {
		err.StatusCode = http.StatusUnauthorized
		return nil, err
	} else {
		user = ldapUser
	}

	if err := checkUserMfa(user, mfaToken); err != nil {
		return nil, err
	}

	if err := checkUserNotDisabled(user); err != nil {
		return nil, err
	}

	// user successfully authenticated
	return user, nil
}

func checkUserAdditionalAuthenticationCriteria(user *model.User, mfaToken string) *model.AppError {
	if err := checkUserMfa(user, mfaToken); err != nil {
		return err
	}

	if err := checkEmailVerified(user); err != nil {
		return err
	}

	if err := checkUserNotDisabled(user); err != nil {
		return err
	}

	if err := checkUserLoginAttempts(user); err != nil {
		return err
	}

	return nil
}

func checkUserMfa(user *model.User, token string) *model.AppError {
	if !user.MfaActive || !utils.IsLicensed || !*utils.License.Features.MFA || !*utils.Cfg.ServiceSettings.EnableMultifactorAuthentication {
		return nil
	}

	mfaInterface := einterfaces.GetMfaInterface()
	if mfaInterface == nil {
		return model.NewLocAppError("checkUserMfa", "api.user.check_user_mfa.not_available.app_error", nil, "")
	}

	if ok, err := mfaInterface.ValidateToken(user.MfaSecret, token); err != nil {
		return err
	} else if !ok {
		return model.NewLocAppError("checkUserMfa", "api.user.check_user_mfa.bad_code.app_error", nil, "")
	}

	return nil
}

func checkUserLoginAttempts(user *model.User) *model.AppError {
	if user.FailedAttempts >= utils.Cfg.ServiceSettings.MaximumLoginAttempts {
		return model.NewLocAppError("checkUserLoginAttempts", "api.user.check_user_login_attempts.too_many.app_error", nil, "user_id="+user.Id)
	}

	return nil
}

func checkEmailVerified(user *model.User) *model.AppError {
	if !user.EmailVerified && utils.Cfg.EmailSettings.RequireEmailVerification {
		return model.NewLocAppError("Login", "api.user.login.not_verified.app_error", nil, "user_id="+user.Id)
	}
	return nil
}

func checkUserNotDisabled(user *model.User) *model.AppError {
	if user.DeleteAt > 0 {
		return model.NewLocAppError("Login", "api.user.login.inactive.app_error", nil, "user_id="+user.Id)
	}
	return nil
}

func authenticateUser(user *model.User, password, mfaToken string) (*model.User, *model.AppError) {
	ldapAvailable := *utils.Cfg.LdapSettings.Enable && einterfaces.GetLdapInterface() != nil && utils.IsLicensed && *utils.License.Features.LDAP

	if user.AuthService == model.USER_AUTH_SERVICE_LDAP {
		if !ldapAvailable {
			err := model.NewLocAppError("login", "api.user.login_ldap.not_available.app_error", nil, "")
			err.StatusCode = http.StatusNotImplemented
			return user, err
		} else if ldapUser, err := checkLdapUserPasswordAndAllCriteria(user.AuthData, password, mfaToken); err != nil {
			err.StatusCode = http.StatusUnauthorized
			return user, err
		} else {
			// slightly redundant to get the user again, but we need to get it from the LDAP server
			return ldapUser, nil
		}
	} else if user.AuthService != "" {
		authService := user.AuthService
		if authService == model.USER_AUTH_SERVICE_SAML || authService == model.USER_AUTH_SERVICE_LDAP {
			authService = strings.ToUpper(authService)
		}
		err := model.NewLocAppError("login", "api.user.login.use_auth_service.app_error", map[string]interface{}{"AuthService": authService}, "")
		err.StatusCode = http.StatusBadRequest
		return user, err
	} else {
		if err := checkPasswordAndAllCriteria(user, password, mfaToken); err != nil {
			err.StatusCode = http.StatusUnauthorized
			return user, err
		} else {
			return user, nil
		}
	}
}