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;
+}