File: auth-client-request.c

package info (click to toggle)
dovecot 1:2.2.13-12~deb8u4
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 38,792 kB
  • sloc: ansic: 341,472; sh: 16,920; makefile: 5,393; cpp: 1,474; perl: 265; xml: 44; python: 34; pascal: 27
file content (240 lines) | stat: -rw-r--r-- 6,961 bytes parent folder | download
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
230
231
232
233
234
235
236
237
238
239
240
/* Copyright (c) 2003-2014 Dovecot authors, see the included COPYING file */

#include "lib.h"
#include "str.h"
#include "strescape.h"
#include "ostream.h"
#include "auth-client-private.h"
#include "auth-server-connection.h"
#include "auth-client-request.h"

#include <stdlib.h>

struct auth_client_request {
	pool_t pool;

	struct auth_server_connection *conn;
	unsigned int id;
	time_t created;

	struct auth_request_info request_info;

	auth_request_callback_t *callback;
	void *context;
};

static void auth_server_send_new_request(struct auth_server_connection *conn,
					 struct auth_client_request *request)
{
	struct auth_request_info *info = &request->request_info;
	string_t *str;

	str = t_str_new(512);
	str_printfa(str, "AUTH\t%u\t", request->id);
	str_append_tabescaped(str, info->mech);
	str_append(str, "\tservice=");
	str_append_tabescaped(str, info->service);

	if ((info->flags & AUTH_REQUEST_FLAG_SUPPORT_FINAL_RESP) != 0)
		str_append(str, "\tfinal-resp-ok");
	if ((info->flags & AUTH_REQUEST_FLAG_SECURED) != 0)
		str_append(str, "\tsecured");
	if ((info->flags & AUTH_REQUEST_FLAG_NO_PENALTY) != 0)
		str_append(str, "\tno-penalty");
	if ((info->flags & AUTH_REQUEST_FLAG_VALID_CLIENT_CERT) != 0)
		str_append(str, "\tvalid-client-cert");

	if (info->session_id != NULL) {
		str_append(str, "\tsession=");
		str_append_tabescaped(str, info->session_id);
	}
	if (info->cert_username != NULL) {
		str_append(str, "\tcert_username=");
		str_append_tabescaped(str, info->cert_username);
	}
	if (info->local_ip.family != 0)
		str_printfa(str, "\tlip=%s", net_ip2addr(&info->local_ip));
	if (info->remote_ip.family != 0)
		str_printfa(str, "\trip=%s", net_ip2addr(&info->remote_ip));
	if (info->local_port != 0)
		str_printfa(str, "\tlport=%u", info->local_port);
	if (info->remote_port != 0)
		str_printfa(str, "\trport=%u", info->remote_port);

	/* send the real_* variants only when they differ from the unreal
	   ones */
	if (info->real_local_ip.family != 0 &&
	    !net_ip_compare(&info->real_local_ip, &info->local_ip)) {
		str_printfa(str, "\treal_lip=%s",
			    net_ip2addr(&info->real_local_ip));
	}
	if (info->real_remote_ip.family != 0 &&
	    !net_ip_compare(&info->real_remote_ip, &info->remote_ip)) {
		str_printfa(str, "\treal_rip=%s",
			    net_ip2addr(&info->real_remote_ip));
	}
	if (info->real_local_port != 0 &&
	    info->real_local_port != info->local_port)
		str_printfa(str, "\treal_lport=%u", info->real_local_port);
	if (info->real_remote_port != 0 &&
	    info->real_remote_port != info->remote_port)
		str_printfa(str, "\treal_rport=%u", info->real_remote_port);

	if (info->initial_resp_base64 != NULL) {
		str_append(str, "\tresp=");
		str_append_tabescaped(str, info->initial_resp_base64);
	}
	str_append_c(str, '\n');

	if (o_stream_send(conn->output, str_data(str), str_len(str)) < 0)
		i_error("Error sending request to auth server: %m");
}

struct auth_client_request *
auth_client_request_new(struct auth_client *client,
			const struct auth_request_info *request_info,
			auth_request_callback_t *callback, void *context)
{
	struct auth_client_request *request;
	pool_t pool;

	pool = pool_alloconly_create("auth client request", 512);
	request = p_new(pool, struct auth_client_request, 1);
	request->pool = pool;
	request->conn = client->conn;

	request->request_info = *request_info;
	request->request_info.mech = p_strdup(pool, request_info->mech);
	request->request_info.service = p_strdup(pool, request_info->service);
	request->request_info.session_id =
		p_strdup_empty(pool, request_info->session_id);
	request->request_info.cert_username =
		p_strdup_empty(pool, request_info->cert_username);
	request->request_info.initial_resp_base64 =
		p_strdup_empty(pool, request_info->initial_resp_base64);
	
	request->callback = callback;
	request->context = context;

	request->id =
		auth_server_connection_add_request(request->conn, request);
	request->created = ioloop_time;
	T_BEGIN {
		auth_server_send_new_request(request->conn, request);
	} T_END;
	return request;
}

void auth_client_request_continue(struct auth_client_request *request,
                                  const char *data_base64)
{
	struct const_iovec iov[3];
	const char *prefix;

	prefix = t_strdup_printf("CONT\t%u\t", request->id);

	iov[0].iov_base = prefix;
	iov[0].iov_len = strlen(prefix);
	iov[1].iov_base = data_base64;
	iov[1].iov_len = strlen(data_base64);
	iov[2].iov_base = "\n";
	iov[2].iov_len = 1;

	if (o_stream_sendv(request->conn->output, iov, 3) < 0)
		i_error("Error sending continue request to auth server: %m");
}

static void ATTR_NULL(3, 4)
call_callback(struct auth_client_request *request,
	      enum auth_request_status status,
	      const char *data_base64,
	      const char *const *args)
{
	auth_request_callback_t *callback = request->callback;

	if (status != AUTH_REQUEST_STATUS_CONTINUE)
		request->callback = NULL;
	callback(request, status, data_base64, args, request->context);
}

void auth_client_request_abort(struct auth_client_request **_request)
{
	struct auth_client_request *request = *_request;

	*_request = NULL;

	auth_client_send_cancel(request->conn->client, request->id);
	call_callback(request, AUTH_REQUEST_STATUS_ABORT, NULL, NULL);
	/* remove the request */
	auth_server_connection_remove_request(request->conn, request->id);
	pool_unref(&request->pool);
}

unsigned int auth_client_request_get_id(struct auth_client_request *request)
{
	return request->id;
}

unsigned int
auth_client_request_get_server_pid(struct auth_client_request *request)
{
	return request->conn->server_pid;
}

const char *auth_client_request_get_cookie(struct auth_client_request *request)
{
	return request->conn->cookie;
}

bool auth_client_request_is_aborted(struct auth_client_request *request)
{
	return request->callback == NULL;
}

time_t auth_client_request_get_create_time(struct auth_client_request *request)
{
	return request->created;
}

void auth_client_request_server_input(struct auth_client_request *request,
				      enum auth_request_status status,
				      const char *const *args)
{
	const char *const *tmp, *base64_data = NULL;

	if (request->callback == NULL) {
		/* aborted already */
		return;
	}

	switch (status) {
	case AUTH_REQUEST_STATUS_OK:
		for (tmp = args; *tmp != NULL; tmp++) {
			if (strncmp(*tmp, "resp=", 5) == 0) {
				base64_data = *tmp + 5;
				break;
			}
		}
		break;
	case AUTH_REQUEST_STATUS_CONTINUE:
		base64_data = args[0];
		args = NULL;
		break;
	case AUTH_REQUEST_STATUS_FAIL:
	case AUTH_REQUEST_STATUS_INTERNAL_FAIL:
	case AUTH_REQUEST_STATUS_ABORT:
		break;
	}

	call_callback(request, status, base64_data, args);
	if (status != AUTH_REQUEST_STATUS_CONTINUE)
		pool_unref(&request->pool);
}

void auth_client_send_cancel(struct auth_client *client, unsigned int id)
{
	const char *str = t_strdup_printf("CANCEL\t%u\n", id);

	if (o_stream_send_str(client->conn->output, str) < 0)
		i_error("Error sending request to auth server: %m");
}