1 files changed, 263 insertions, 0 deletions
diff --git a/src/webinspector.c b/src/webinspector.c
new file mode 100644
index 0000000..f960fcc
--- /dev/null
+++ b/src/webinspector.c
@@ -0,0 +1,263 @@
+/*
+ * webinspector.c
+ * com.apple.webinspector service implementation.
+ *
+ * Copyright (c) 2013 Yury Melnichek 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 <string.h>
+#include <stdlib.h>
+#include <plist/plist.h>
+
+#include "webinspector.h"
+#include "lockdown.h"
+#include "common/debug.h"
+
+/**
+ * Convert a property_list_service_error_t value to a webinspector_error_t value.
+ * Used internally to get correct error codes.
+ *
+ * @param err An property_list_service_error_t error code
+ *
+ * @return A matching webinspector_error_t error code,
+ *     WEBINSPECTOR_E_UNKNOWN_ERROR otherwise.
+ */
+static webinspector_error_t webinspector_error(property_list_service_error_t err)
+{
+	switch (err) {
+		case PROPERTY_LIST_SERVICE_E_SUCCESS:
+			return WEBINSPECTOR_E_SUCCESS;
+		case PROPERTY_LIST_SERVICE_E_INVALID_ARG:
+			return WEBINSPECTOR_E_INVALID_ARG;
+		case PROPERTY_LIST_SERVICE_E_PLIST_ERROR:
+			return WEBINSPECTOR_E_PLIST_ERROR;
+		case PROPERTY_LIST_SERVICE_E_MUX_ERROR:
+			return WEBINSPECTOR_E_MUX_ERROR;
+		case PROPERTY_LIST_SERVICE_E_SSL_ERROR:
+			return WEBINSPECTOR_E_SSL_ERROR;
+		case PROPERTY_LIST_SERVICE_E_RECEIVE_TIMEOUT:
+			return WEBINSPECTOR_E_RECEIVE_TIMEOUT;
+		case PROPERTY_LIST_SERVICE_E_NOT_ENOUGH_DATA:
+			return WEBINSPECTOR_E_NOT_ENOUGH_DATA;
+		default:
+			break;
+	}
+	return WEBINSPECTOR_E_UNKNOWN_ERROR;
+}
+
+webinspector_error_t webinspector_client_new(idevice_t device, lockdownd_service_descriptor_t service, webinspector_client_t * client)
+{
+	*client = NULL;
+
+	if (!device || !service || service->port == 0 || !client || *client) {
+		debug_info("Incorrect parameter passed to webinspector_client_new.");
+		return WEBINSPECTOR_E_INVALID_ARG;
+	}
+
+	debug_info("Creating webinspector_client, port = %d.", service->port);
+
+	property_list_service_client_t plclient = NULL;
+	webinspector_error_t ret = webinspector_error(property_list_service_client_new(device, service, &plclient));
+	if (ret != WEBINSPECTOR_E_SUCCESS) {
+		debug_info("Creating a property list client failed. Error: %i", ret);
+		return ret;
+	}
+
+	webinspector_client_t client_loc = (webinspector_client_t) malloc(sizeof(struct webinspector_client_private));
+	client_loc->parent = plclient;
+
+	*client = client_loc;
+
+	debug_info("webinspector_client successfully created.");
+	return 0;
+}
+
+webinspector_error_t webinspector_client_start_service(idevice_t device, webinspector_client_t * client, const char* label)
+{
+	webinspector_error_t err = WEBINSPECTOR_E_UNKNOWN_ERROR;
+	service_client_factory_start_service(device, WEBINSPECTOR_SERVICE_NAME, (void**)client, label, SERVICE_CONSTRUCTOR(webinspector_client_new), &err);
+	return err;
+}
+
+webinspector_error_t webinspector_client_free(webinspector_client_t client)
+{
+	if (!client)
+		return WEBINSPECTOR_E_INVALID_ARG;
+
+	webinspector_error_t err = webinspector_error(property_list_service_client_free(client->parent));
+	free(client);
+
+	return err;
+}
+
+webinspector_error_t webinspector_send(webinspector_client_t client, plist_t plist)
+{
+	webinspector_error_t res = WEBINSPECTOR_E_UNKNOWN_ERROR;
+
+	uint32_t offset = 0;
+	int is_final_message = 0;
+
+	char *packet = NULL;
+	uint32_t packet_length = 0;
+
+	debug_info("Sending webinspector message...");
+	debug_plist(plist);
+
+	/* convert plist to packet */
+	plist_to_bin(plist, &packet, &packet_length);
+	if (!packet || packet_length == 0) {
+		debug_info("Error converting plist to binary.");
+		return res;
+	}
+
+	do {
+		/* determine if we need to send partial messages */
+		if (packet_length < WEBINSPECTOR_PARTIAL_PACKET_CHUNK_SIZE) {
+			is_final_message = 1;
+		} else {
+			/* send partial packet */
+			is_final_message = 0;
+		}
+
+		plist_t outplist = plist_new_dict();
+		if (!is_final_message) {
+			/* split packet into partial chunks */
+			plist_dict_set_item(outplist, "WIRPartialMessageKey", plist_new_data(packet + offset, WEBINSPECTOR_PARTIAL_PACKET_CHUNK_SIZE));
+			offset += WEBINSPECTOR_PARTIAL_PACKET_CHUNK_SIZE;
+			packet_length -= WEBINSPECTOR_PARTIAL_PACKET_CHUNK_SIZE;
+		} else {
+			/* send final chunk */
+			plist_dict_set_item(outplist, "WIRFinalMessageKey", plist_new_data(packet + offset, packet_length));
+			offset += packet_length;
+			packet_length -= packet_length;
+		}
+
+		res = webinspector_error(property_list_service_send_binary_plist(client->parent, outplist));
+		plist_free(outplist);
+		outplist = NULL;
+		if (res != WEBINSPECTOR_E_SUCCESS) {
+			debug_info("Sending plist failed with error %d", res);
+			return res;
+		}
+	} while(packet_length > 0);
+
+	free(packet);
+	packet = NULL;
+
+	return res;
+}
+
+webinspector_error_t webinspector_receive(webinspector_client_t client, plist_t * plist)
+{
+	return webinspector_receive_with_timeout(client, plist, 5000);
+}
+
+webinspector_error_t webinspector_receive_with_timeout(webinspector_client_t client, plist_t * plist, uint32_t timeout_ms)
+{
+	webinspector_error_t res = WEBINSPECTOR_E_UNKNOWN_ERROR;
+	plist_t message = NULL;
+	plist_t key = NULL;
+
+	int is_final_message = 1;
+
+	char* buffer = NULL;
+	uint64_t length = 0;
+
+	char* packet = NULL;
+	char* newpacket = NULL;
+	uint64_t packet_length = 0;
+
+	debug_info("Receiving webinspector message...");
+
+	do {
+		/* receive message */
+		res = webinspector_error(property_list_service_receive_plist_with_timeout(client->parent, &message, timeout_ms));
+		if (res != WEBINSPECTOR_E_SUCCESS || !message) {
+			debug_info("Could not receive message, error %d", res);
+			plist_free(message);
+			return WEBINSPECTOR_E_MUX_ERROR;
+		}
+
+		/* get message key */
+		key = plist_dict_get_item(message, "WIRFinalMessageKey");
+		if (!key) {
+			key = plist_dict_get_item(message, "WIRPartialMessageKey");
+			if (!key) {
+				debug_info("ERROR: Unable to read message key.");
+				plist_free(message);
+				return WEBINSPECTOR_E_PLIST_ERROR;
+			}
+			is_final_message = 0;
+		} else {
+			is_final_message = 1;
+		}
+
+		/* read partial data */
+		plist_get_data_val(key, &buffer, &length);
+		if (!buffer || length == 0 || length > 0xFFFFFFFF) {
+			debug_info("ERROR: Unable to get the inner plist binary data.");
+			free(packet);
+			free(buffer);
+			return WEBINSPECTOR_E_PLIST_ERROR;
+		}
+
+		/* (re)allocate packet data */
+		if (!packet) {
+			packet = (char*)malloc(length * sizeof(char));
+		} else {
+			newpacket = (char*)realloc(packet, (packet_length + length) * sizeof(char));
+			packet = newpacket;
+		}
+
+		/* copy partial data into final packet data */
+		memcpy(packet + packet_length, buffer, length);
+
+		/* cleanup buffer */
+		free(buffer);
+		buffer = NULL;
+
+		if (message) {
+			plist_free(message);
+			message = NULL;
+		}
+
+		/* adjust packet length */
+		packet_length += length;
+		length = 0;
+	} while(!is_final_message);
+
+	/* read final message */
+	if (packet_length) {
+		plist_from_bin(packet, (uint32_t)packet_length, plist);
+		if (!*plist) {
+			debug_info("Error restoring the final plist.");
+			free(packet);
+			return WEBINSPECTOR_E_PLIST_ERROR;
+		}
+
+		debug_plist(*plist);
+	}
+
+	if (packet) {
+		free(packet);
+	}
+
+	return res;
+}