Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/imap-login/client-authenticate.c @ 2768:d344be0bb70f HEAD

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added IMAP and POP3 proxying support.
author Timo Sirainen <tss@iki.fi>
date Mon, 18 Oct 2004 22:21:40 +0300
parents 26a091f3add6
children e624a9ad6a30
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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46f879c46b45 auth_verbose now affects imap/pop3 login processes too. Every authentication
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1 /* Copyright (C) 2002-2004 Timo Sirainen */
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2
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3 #include "common.h"
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4 #include "base64.h"
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5 #include "buffer.h"
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6 #include "ioloop.h"
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7 #include "istream.h"
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8 #include "ostream.h"
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9 #include "safe-memset.h"
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10 #include "str.h"
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11 #include "str-sanitize.h"
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12 #include "imap-parser.h"
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13 #include "auth-client.h"
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14 #include "client.h"
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15 #include "client-authenticate.h"
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16 #include "imap-proxy.h"
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17
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18 #include <stdlib.h>
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19
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20 const char *client_authenticate_get_capabilities(int secured)
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21 {
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22 const struct auth_mech_desc *mech;
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23 unsigned int i, count;
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24 string_t *str;
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25
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26 str = t_str_new(128);
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27 mech = auth_client_get_available_mechs(auth_client, &count);
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28 for (i = 0; i < count; i++) {
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d2755efdd187 Don't advertise AUTH=PLAIN unless transport is secure
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29 /* a) transport is secured
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30 b) auth mechanism isn't plaintext
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31 c) we allow insecure authentication
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32 */
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33 if ((mech[i].flags & MECH_SEC_PRIVATE) == 0 &&
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34 (secured || !disable_plaintext_auth ||
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35 (mech[i].flags & MECH_SEC_PLAINTEXT) == 0)) {
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36 str_append_c(str, ' ');
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37 str_append(str, "AUTH=");
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38 str_append(str, mech[i].name);
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39 }
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40 }
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41
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42 return str_c(str);
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43 }
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44
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45 static void client_auth_input(void *context)
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46 {
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47 struct imap_client *client = context;
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48 char *line;
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49
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50 if (!client_read(client))
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51 return;
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52
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53 if (client->skip_line) {
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54 if (i_stream_next_line(client->input) == NULL)
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55 return;
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56
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57 client->skip_line = FALSE;
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58 }
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59
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60 /* @UNSAFE */
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61 line = i_stream_next_line(client->input);
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62 if (line == NULL)
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63 return;
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64
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65 if (strcmp(line, "*") == 0) {
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66 sasl_server_auth_cancel(&client->common,
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67 "Authentication aborted");
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68 return;
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69 }
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70
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71 if (client->common.auth_request == NULL) {
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72 sasl_server_auth_cancel(&client->common,
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73 "Don't send unrequested data");
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74 } else {
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75 auth_client_request_continue(client->common.auth_request, line);
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76 }
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77
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78 /* clear sensitive data */
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79 safe_memset(line, 0, strlen(line));
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80 }
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81
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82 static int client_handle_args(struct imap_client *client,
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83 const char *const *args, int nologin)
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84 {
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85 const char *reason = NULL, *host = NULL, *destuser = NULL, *pass = NULL;
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86 string_t *reply;
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87 unsigned int port = 143;
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88 int proxy = FALSE;
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89
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90 for (; *args != NULL; args++) {
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91 if (strcmp(*args, "nologin") == 0)
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92 nologin = TRUE;
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93 else if (strcmp(*args, "proxy") == 0)
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94 proxy = TRUE;
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95 else if (strncmp(*args, "reason=", 7) == 0)
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96 reason = *args + 7;
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97 else if (strncmp(*args, "host=", 5) == 0)
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98 host = *args + 5;
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99 else if (strncmp(*args, "port=", 5) == 0)
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100 port = atoi(*args + 5);
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101 else if (strncmp(*args, "destuser=", 9) == 0)
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102 destuser = *args + 9;
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103 else if (strncmp(*args, "pass=", 5) == 0)
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104 pass = *args + 5;
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105 }
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106
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107 if (destuser == NULL)
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108 destuser = client->common.virtual_user;
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109
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110 if (proxy) {
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111 /* we want to proxy the connection to another server.
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112
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113 proxy host=.. [port=..] [destuser=..] pass=.. */
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114 if (imap_proxy_new(client, host, port, destuser, pass) < 0)
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115 client_destroy_internal_failure(client);
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116 else {
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117 client_destroy(client, t_strconcat(
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118 "Proxy: ", client->common.virtual_user, NULL));
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119 }
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120 return TRUE;
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121 } else if (host != NULL) {
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122 /* IMAP referral
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123
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124 [nologin] referral host=.. [port=..] [destuser=..]
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125 [reason=..]
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126
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127 NO [REFERRAL imap://destuser;AUTH=..@host:port/] Can't login.
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128 OK [...] Logged in, but you should use this server instead.
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129 .. [REFERRAL ..] (Reason from auth server)
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130 */
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131 reply = t_str_new(128);
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parents: 2766
diff changeset
132 str_append(reply, nologin ? "NO " : "OK ");
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
133 str_printfa(reply, "[REFERRAL imap://%s;AUTH=%s@%s",
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
134 destuser, client->common.auth_mech_name, host);
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
135 if (port != 143)
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
136 str_printfa(reply, ":%u", port);
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
137 str_append(reply, "/] ");
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
138 if (reason != NULL)
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
139 str_append(reply, reason);
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
140 else if (nologin)
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
141 str_append(reply, "Try this server instead.");
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
142 else {
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
143 str_append(reply, "Logged in, but you should use "
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
144 "this server instead.");
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
145 }
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
146 client_send_tagline(client, str_c(reply));
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
147 } else if (nologin) {
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
148 /* Authentication went ok, but for some reason user isn't
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
149 allowed to log in. Shouldn't probably happen. */
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
150 reply = t_str_new(128);
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
151 if (reason != NULL)
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
152 str_printfa(reply, "NO %s", reason);
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
153 else
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
154 str_append(reply, "NO Login not allowed.");
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
155 client_send_tagline(client, str_c(reply));
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
156 } else {
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
157 /* normal login/failure */
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
158 return FALSE;
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
159 }
2766
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
160
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
161 if (!nologin) {
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
162 client_destroy(client, t_strconcat(
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
163 "Login: ", client->common.virtual_user, NULL));
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
164 } else {
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
165 /* get back to normal client input. */
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
166 if (client->io != NULL)
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
167 io_remove(client->io);
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
168 client->io = io_add(client->common.fd, IO_READ,
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
169 client_input, client);
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
170 }
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
171 return TRUE;
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
172 }
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
173
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
174 static void sasl_callback(struct client *_client, enum sasl_server_reply reply,
2766
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
175 const char *data, const char *const *args)
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
176 {
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
177 struct imap_client *client = (struct imap_client *)_client;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
178 struct const_iovec iov[3];
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
179 size_t data_len;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
180 ssize_t ret;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
181
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
182 switch (reply) {
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
183 case SASL_SERVER_REPLY_SUCCESS:
2766
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
184 if (args != NULL) {
2768
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
185 if (client_handle_args(client, args, FALSE))
2766
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
186 break;
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
187 }
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
188
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
189 client_send_tagline(client, "OK Logged in.");
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
190 client_destroy(client, t_strconcat(
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
191 "Login: ", client->common.virtual_user, NULL));
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
192 break;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
193 case SASL_SERVER_REPLY_AUTH_FAILED:
2766
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
194 if (args != NULL) {
2768
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
195 if (client_handle_args(client, args, TRUE))
2766
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
196 break;
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
197 }
26a091f3add6 Implemented support for LOGIN-REFERRALS using "referral" and "reason"
Timo Sirainen <tss@iki.fi>
parents: 2736
diff changeset
198
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
199 if (data == NULL)
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
200 client_send_tagline(client, "Authentication failed");
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
201 else {
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
202 client_send_tagline(client, t_strconcat(
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
203 "NO Authentication failed: ", data, NULL));
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
204 }
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
205
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
206 /* get back to normal client input. */
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
207 if (client->io != NULL)
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
208 io_remove(client->io);
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
209 client->io = io_add(client->common.fd, IO_READ,
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
210 client_input, client);
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
211 break;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
212 case SASL_SERVER_REPLY_MASTER_FAILED:
2768
d344be0bb70f Added IMAP and POP3 proxying support.
Timo Sirainen <tss@iki.fi>
parents: 2766
diff changeset
213 client_destroy_internal_failure(client);
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
214 break;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
215 case SASL_SERVER_REPLY_CONTINUE:
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
216 data_len = strlen(data);
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
217 iov[0].iov_base = "+ ";
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
218 iov[0].iov_len = 2;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
219 iov[1].iov_base = data;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
220 iov[1].iov_len = data_len;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
221 iov[2].iov_base = "\r\n";
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
222 iov[2].iov_len = 2;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
223
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
224 ret = o_stream_sendv(client->output, iov, 3);
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
225 if (ret < 0)
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
226 client_destroy(client, "Disconnected");
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
227 else if ((size_t)ret != 2 + data_len + 2)
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
228 client_destroy(client, "Transmit buffer full");
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
229 else {
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
230 /* continue */
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
231 return;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
232 }
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
233 break;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
234 }
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
235
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
236 client_unref(client);
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
237 }
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
238
1049
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
239 int cmd_authenticate(struct imap_client *client, struct imap_arg *args)
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
240 {
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
241 const char *mech_name;
1049
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
242
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
243 /* we want only one argument: authentication mechanism name */
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
244 if (args[0].type != IMAP_ARG_ATOM && args[0].type != IMAP_ARG_STRING)
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
245 return -1;
1049
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
246 if (args[1].type != IMAP_ARG_EOL)
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
247 return -1;
1049
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
248
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
249 mech_name = IMAP_ARG_STR(&args[0]);
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
250 if (*mech_name == '\0')
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
251 return FALSE;
c41787e8c3f4 Moved common login process code to login-common, created pop3-login.
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
252
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
253 client_ref(client);
2736
0f31778d3c34 Changed dovecot-auth protocol to ASCII based. Should be easier now to write
Timo Sirainen <tss@iki.fi>
parents: 2734
diff changeset
254 sasl_server_auth_begin(&client->common, "IMAP", mech_name, NULL,
2733
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
255 sasl_callback);
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
256 if (!client->common.authenticating)
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
257 return 1;
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
258
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
259 /* following input data will go to authentication */
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
260 if (client->io != NULL)
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
261 io_remove(client->io);
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
diff changeset
262 client->io = io_add(client->common.fd, IO_READ,
9b9d9c164a31 Login process cleanups. Share more authentication code between pop3/imap.
Timo Sirainen <tss@iki.fi>
parents: 2708
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263 client_auth_input, client);
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264 return 0;
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265 }
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266
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267 int cmd_login(struct imap_client *client, struct imap_arg *args)
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268 {
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269 const char *user, *pass;
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270 string_t *plain_login, *base64;
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271
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272 /* two arguments: username and password */
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273 if (args[0].type != IMAP_ARG_ATOM && args[0].type != IMAP_ARG_STRING)
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274 return -1;
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275 if (args[1].type != IMAP_ARG_ATOM && args[1].type != IMAP_ARG_STRING)
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276 return -1;
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277 if (args[2].type != IMAP_ARG_EOL)
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278 return -1;
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279
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280 user = IMAP_ARG_STR(&args[0]);
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281 pass = IMAP_ARG_STR(&args[1]);
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282
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283 if (!client->common.secured && disable_plaintext_auth) {
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284 if (verbose_auth) {
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285 client_syslog(&client->common, "Login failed: "
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286 "Plaintext authentication disabled");
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287 }
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288 client_send_line(client,
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289 "* BAD [ALERT] Plaintext authentication is disabled, "
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290 "but your client sent password in plaintext anyway. "
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291 "If anyone was listening, the password was exposed.");
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292 client_send_tagline(client,
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293 "NO Plaintext authentication disabled.");
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294 return 1;
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295 }
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296
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297 /* authorization ID \0 authentication ID \0 pass */
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298 plain_login = buffer_create_dynamic(pool_datastack_create(), 64);
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299 buffer_append_c(plain_login, '\0');
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300 buffer_append(plain_login, user, strlen(user));
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301 buffer_append_c(plain_login, '\0');
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302 buffer_append(plain_login, pass, strlen(pass));
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303
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304 base64 = buffer_create_dynamic(pool_datastack_create(),
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305 MAX_BASE64_ENCODED_SIZE(plain_login->used));
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306 base64_encode(plain_login->data, plain_login->used, base64);
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307
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308 client_ref(client);
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309 sasl_server_auth_begin(&client->common, "IMAP", "PLAIN",
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310 str_c(base64), sasl_callback);
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311 if (!client->common.authenticating)
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312 return 1;
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313
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314 /* don't read any input from client until login is finished */
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315 if (client->io != NULL) {
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316 io_remove(client->io);
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317 client->io = NULL;
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318 }
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319
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320 return 0;
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321 }