1 /*
2 * service.c
3 * generic service implementation.
4 *
5 * Copyright (c) 2013 Nikias Bassen. All Rights Reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21 #ifdef HAVE_CONFIG_H
22 #include <config.h>
23 #endif
24 #include <stdlib.h>
25 #include <string.h>
26
27 #include "service.h"
28 #include "idevice.h"
29 #include "common/debug.h"
30
31 /**
32 * Convert an idevice_error_t value to an service_error_t value.
33 * Used internally to get correct error codes.
34 *
35 * @param err An idevice_error_t error code
36 *
37 * @return A matching service_error_t error code,
38 * SERVICE_E_UNKNOWN_ERROR otherwise.
39 */
idevice_to_service_error(idevice_error_t err)40 static service_error_t idevice_to_service_error(idevice_error_t err)
41 {
42 switch (err) {
43 case IDEVICE_E_SUCCESS:
44 return SERVICE_E_SUCCESS;
45 case IDEVICE_E_INVALID_ARG:
46 return SERVICE_E_INVALID_ARG;
47 case IDEVICE_E_SSL_ERROR:
48 return SERVICE_E_SSL_ERROR;
49 case IDEVICE_E_NOT_ENOUGH_DATA:
50 return SERVICE_E_NOT_ENOUGH_DATA;
51 case IDEVICE_E_TIMEOUT:
52 return SERVICE_E_TIMEOUT;
53 default:
54 break;
55 }
56 return SERVICE_E_UNKNOWN_ERROR;
57 }
58
service_client_new(idevice_t device,lockdownd_service_descriptor_t service,service_client_t * client)59 LIBIMOBILEDEVICE_API service_error_t service_client_new(idevice_t device, lockdownd_service_descriptor_t service, service_client_t *client)
60 {
61 if (!device || !service || service->port == 0 || !client || *client)
62 return SERVICE_E_INVALID_ARG;
63
64 /* Attempt connection */
65 idevice_connection_t connection = NULL;
66 if (idevice_connect(device, service->port, &connection) != IDEVICE_E_SUCCESS) {
67 return SERVICE_E_MUX_ERROR;
68 }
69
70 /* create client object */
71 service_client_t client_loc = (service_client_t)malloc(sizeof(struct service_client_private));
72 client_loc->connection = connection;
73
74 /* enable SSL if requested */
75 if (service->ssl_enabled == 1)
76 service_enable_ssl(client_loc);
77
78 /* all done, return success */
79 *client = client_loc;
80 return SERVICE_E_SUCCESS;
81 }
82
service_client_factory_start_service(idevice_t device,const char * service_name,void ** client,const char * label,int32_t (* constructor_func)(idevice_t,lockdownd_service_descriptor_t,void **),int32_t * error_code)83 LIBIMOBILEDEVICE_API service_error_t service_client_factory_start_service(idevice_t device, const char* service_name, void **client, const char* label, int32_t (*constructor_func)(idevice_t, lockdownd_service_descriptor_t, void**), int32_t *error_code)
84 {
85 *client = NULL;
86
87 lockdownd_client_t lckd = NULL;
88 if (LOCKDOWN_E_SUCCESS != lockdownd_client_new_with_handshake(device, &lckd, label)) {
89 debug_info("Could not create a lockdown client.");
90 return SERVICE_E_START_SERVICE_ERROR;
91 }
92
93 lockdownd_service_descriptor_t service = NULL;
94 lockdownd_start_service(lckd, service_name, &service);
95 lockdownd_client_free(lckd);
96
97 if (!service || service->port == 0) {
98 debug_info("Could not start service %s!", service_name);
99 return SERVICE_E_START_SERVICE_ERROR;
100 }
101
102 int32_t ec;
103 if (constructor_func) {
104 ec = (int32_t)constructor_func(device, service, client);
105 } else {
106 ec = service_client_new(device, service, (service_client_t*)client);
107 }
108 if (error_code) {
109 *error_code = ec;
110 }
111
112 if (ec != SERVICE_E_SUCCESS) {
113 debug_info("Could not connect to service %s! Port: %i, error: %i", service_name, service->port, ec);
114 }
115
116 lockdownd_service_descriptor_free(service);
117 service = NULL;
118
119 return (ec == SERVICE_E_SUCCESS) ? SERVICE_E_SUCCESS : SERVICE_E_START_SERVICE_ERROR;
120 }
121
service_client_free(service_client_t client)122 LIBIMOBILEDEVICE_API service_error_t service_client_free(service_client_t client)
123 {
124 if (!client)
125 return SERVICE_E_INVALID_ARG;
126
127 service_error_t err = idevice_to_service_error(idevice_disconnect(client->connection));
128
129 free(client);
130 client = NULL;
131
132 return err;
133 }
134
service_send(service_client_t client,const char * data,uint32_t size,uint32_t * sent)135 LIBIMOBILEDEVICE_API service_error_t service_send(service_client_t client, const char* data, uint32_t size, uint32_t *sent)
136 {
137 service_error_t res = SERVICE_E_UNKNOWN_ERROR;
138 uint32_t bytes = 0;
139
140 if (!client || (client && !client->connection) || !data || (size == 0)) {
141 return SERVICE_E_INVALID_ARG;
142 }
143
144 debug_info("sending %d bytes", size);
145 res = idevice_to_service_error(idevice_connection_send(client->connection, data, size, &bytes));
146 if (res != SERVICE_E_SUCCESS) {
147 debug_info("ERROR: sending to device failed.");
148 }
149 if (sent) {
150 *sent = bytes;
151 }
152
153 return res;
154 }
155
service_receive_with_timeout(service_client_t client,char * data,uint32_t size,uint32_t * received,unsigned int timeout)156 LIBIMOBILEDEVICE_API service_error_t service_receive_with_timeout(service_client_t client, char* data, uint32_t size, uint32_t *received, unsigned int timeout)
157 {
158 service_error_t res = SERVICE_E_UNKNOWN_ERROR;
159 uint32_t bytes = 0;
160
161 if (!client || (client && !client->connection) || !data || (size == 0)) {
162 return SERVICE_E_INVALID_ARG;
163 }
164
165 res = idevice_to_service_error(idevice_connection_receive_timeout(client->connection, data, size, &bytes, timeout));
166 if (res != SERVICE_E_SUCCESS && res != SERVICE_E_TIMEOUT) {
167 debug_info("could not read data");
168 return res;
169 }
170 if (received) {
171 *received = bytes;
172 }
173
174 return res;
175 }
176
service_receive(service_client_t client,char * data,uint32_t size,uint32_t * received)177 LIBIMOBILEDEVICE_API service_error_t service_receive(service_client_t client, char* data, uint32_t size, uint32_t *received)
178 {
179 return service_receive_with_timeout(client, data, size, received, 30000);
180 }
181
service_enable_ssl(service_client_t client)182 LIBIMOBILEDEVICE_API service_error_t service_enable_ssl(service_client_t client)
183 {
184 if (!client || !client->connection)
185 return SERVICE_E_INVALID_ARG;
186 return idevice_to_service_error(idevice_connection_enable_ssl(client->connection));
187 }
188
service_disable_ssl(service_client_t client)189 LIBIMOBILEDEVICE_API service_error_t service_disable_ssl(service_client_t client)
190 {
191 return service_disable_bypass_ssl(client, 0);
192 }
193
service_disable_bypass_ssl(service_client_t client,uint8_t sslBypass)194 LIBIMOBILEDEVICE_API service_error_t service_disable_bypass_ssl(service_client_t client, uint8_t sslBypass)
195 {
196 if (!client || !client->connection)
197 return SERVICE_E_INVALID_ARG;
198 return idevice_to_service_error(idevice_connection_disable_bypass_ssl(client->connection, sslBypass));
199 }
200
201