1 files changed, 207 insertions, 0 deletions

diff --git a/src/service.c b/src/service.c
new file mode 100644
index 0000000..9474021
--- /dev/null
+++ b/src/service.c
@@ -0,0 +1,207 @@
+/*
+ * service.c
+ * generic service implementation.
+ *
+ * Copyright (c) 2013 Nikias Bassen. All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+
+#include "service.h"
+#include "idevice.h"
+#include "common/debug.h"
+
+/**
+ * Convert an idevice_error_t value to an service_error_t value.
+ * Used internally to get correct error codes.
+ *
+ * @param err An idevice_error_t error code
+ *
+ * @return A matching service_error_t error code,
+ *     SERVICE_E_UNKNOWN_ERROR otherwise.
+ */
+static service_error_t idevice_to_service_error(idevice_error_t err)
+{
+        switch (err) {
+                case IDEVICE_E_SUCCESS:
+                        return SERVICE_E_SUCCESS;
+                case IDEVICE_E_INVALID_ARG:
+                        return SERVICE_E_INVALID_ARG;
+                case IDEVICE_E_SSL_ERROR:
+                        return SERVICE_E_SSL_ERROR;
+                case IDEVICE_E_NOT_ENOUGH_DATA:
+                        return SERVICE_E_NOT_ENOUGH_DATA;
+                case IDEVICE_E_TIMEOUT:
+                        return SERVICE_E_TIMEOUT;
+                default:
+                        break;
+        }
+        return SERVICE_E_UNKNOWN_ERROR;
+}
+
+service_error_t service_client_new(idevice_t device, lockdownd_service_descriptor_t service, service_client_t *client)
+{
+        if (!device || !service || service->port == 0 || !client || *client)
+                return SERVICE_E_INVALID_ARG;
+
+        /* Attempt connection */
+        idevice_connection_t connection = NULL;
+        if (idevice_connect(device, service->port, &connection) != IDEVICE_E_SUCCESS) {
+                return SERVICE_E_MUX_ERROR;
+        }
+
+        /* create client object */
+        service_client_t client_loc = (service_client_t)malloc(sizeof(struct service_client_private));
+        client_loc->connection = connection;
+
+        /* enable SSL if requested */
+        if (service->ssl_enabled == 1)
+                service_enable_ssl(client_loc);
+
+        /* all done, return success */
+        *client = client_loc;
+        return SERVICE_E_SUCCESS;
+}
+
+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)
+{
+        *client = NULL;
+
+        lockdownd_client_t lckd = NULL;
+        if (LOCKDOWN_E_SUCCESS != lockdownd_client_new_with_handshake(device, &lckd, label)) {
+                debug_info("Could not create a lockdown client.");
+                return SERVICE_E_START_SERVICE_ERROR;
+        }
+
+        lockdownd_service_descriptor_t service = NULL;
+        lockdownd_error_t lerr = lockdownd_start_service(lckd, service_name, &service);
+        lockdownd_client_free(lckd);
+
+        if (lerr != LOCKDOWN_E_SUCCESS) {
+                debug_info("Could not start service %s: %s", service_name, lockdownd_strerror(lerr));
+                return SERVICE_E_START_SERVICE_ERROR;
+        }
+
+        int32_t ec;
+        if (constructor_func) {
+                ec = (int32_t)constructor_func(device, service, client);
+        } else {
+                ec = service_client_new(device, service, (service_client_t*)client);
+        }
+        if (error_code) {
+                *error_code = ec;
+        }
+
+        if (ec != SERVICE_E_SUCCESS) {
+                debug_info("Could not connect to service %s! Port: %i, error: %i", service_name, service->port, ec);
+        }
+
+        lockdownd_service_descriptor_free(service);
+        service = NULL;
+
+        return (ec == SERVICE_E_SUCCESS) ? SERVICE_E_SUCCESS : SERVICE_E_START_SERVICE_ERROR;
+}
+
+service_error_t service_client_free(service_client_t client)
+{
+        if (!client)
+                return SERVICE_E_INVALID_ARG;
+
+        service_error_t err = idevice_to_service_error(idevice_disconnect(client->connection));
+
+        free(client);
+        client = NULL;
+
+        return err;
+}
+
+service_error_t service_send(service_client_t client, const char* data, uint32_t size, uint32_t *sent)
+{
+        service_error_t res = SERVICE_E_UNKNOWN_ERROR;
+        uint32_t bytes = 0;
+
+        if (!client || (client && !client->connection) || !data || (size == 0)) {
+                return SERVICE_E_INVALID_ARG;
+        }
+
+        debug_info("sending %d bytes", size);
+        res = idevice_to_service_error(idevice_connection_send(client->connection, data, size, &bytes));
+        if (res != SERVICE_E_SUCCESS) {
+                debug_info("ERROR: sending to device failed.");
+        }
+        if (sent) {
+                *sent = bytes;
+        }
+
+        return res;
+}
+
+service_error_t service_receive_with_timeout(service_client_t client, char* data, uint32_t size, uint32_t *received, unsigned int timeout)
+{
+        service_error_t res = SERVICE_E_UNKNOWN_ERROR;
+        uint32_t bytes = 0;
+
+        if (!client || (client && !client->connection) || !data || (size == 0)) {
+                return SERVICE_E_INVALID_ARG;
+        }
+
+        res = idevice_to_service_error(idevice_connection_receive_timeout(client->connection, data, size, &bytes, timeout));
+        if (res != SERVICE_E_SUCCESS && res != SERVICE_E_TIMEOUT) {
+                debug_info("could not read data");
+                return res;
+        }
+        if (received) {
+                *received = bytes;
+        }
+
+        return res;
+}
+
+service_error_t service_receive(service_client_t client, char* data, uint32_t size, uint32_t *received)
+{
+        return service_receive_with_timeout(client, data, size, received, 30000);
+}
+
+service_error_t service_enable_ssl(service_client_t client)
+{
+        if (!client || !client->connection)
+                return SERVICE_E_INVALID_ARG;
+        return idevice_to_service_error(idevice_connection_enable_ssl(client->connection));
+}
+
+service_error_t service_disable_ssl(service_client_t client)
+{
+        return service_disable_bypass_ssl(client, 0);
+}
+
+service_error_t service_disable_bypass_ssl(service_client_t client, uint8_t sslBypass)
+{
+        if (!client || !client->connection)
+                return SERVICE_E_INVALID_ARG;
+        return idevice_to_service_error(idevice_connection_disable_bypass_ssl(client->connection, sslBypass));
+}
+
+service_error_t service_get_connection(service_client_t client, idevice_connection_t *connection)
+{
+        if (!client || !client->connection || !connection)
+                return SERVICE_E_INVALID_ARG;
+        *connection = client->connection;
+        return SERVICE_E_SUCCESS;
+}