/* * tss.c * Functions for communicating with Apple's TSS server * * Copyright (c) 2010-2013 Martin Szulecki. All Rights Reserved. * Copyright (c) 2012 Nikias Bassen. All Rights Reserved. * Copyright (c) 2010 Joshua Hill. 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 */ #include #include #include #include #include #include #include "tss.h" #include "img3.h" #include "common.h" #include "idevicerestore.h" #define TSS_CLIENT_VERSION_STRING "libauthinstall-293.1.16" #define ECID_STRSIZE 0x20 typedef struct { int length; char* content; } tss_response; char* ecid_to_string(uint64_t ecid) { char* ecid_string = malloc(ECID_STRSIZE); memset(ecid_string, '\0', ECID_STRSIZE); if (ecid == 0) { error("ERROR: Invalid ECID passed.\n"); return NULL; } snprintf(ecid_string, ECID_STRSIZE, FMT_qu, (long long unsigned int)ecid); return ecid_string; } plist_t tss_request_new(plist_t overrides) { plist_t request = plist_new_dict(); plist_dict_insert_item(request, "@Locality", plist_new_string("en_US")); plist_dict_insert_item(request, "@HostPlatformInfo", #ifdef WIN32 plist_new_string("windows") #else plist_new_string("mac") #endif ); plist_dict_insert_item(request, "@VersionInfo", plist_new_string(TSS_CLIENT_VERSION_STRING)); char* guid = generate_guid(); if (guid) { plist_dict_insert_item(request, "@UUID", plist_new_string(guid)); free(guid); } /* apply overrides */ if (overrides) { plist_dict_merge(&request, overrides); } return request; } int tss_request_add_ap_img4_tags(plist_t request, plist_t parameters) { plist_t node = NULL; if (!parameters) { error("ERROR: Missing required AP parameters\n"); return -1; } /* ApECID */ node = plist_dict_get_item(parameters, "ApECID"); if (!node || plist_get_node_type(node) != PLIST_UINT) { error("ERROR: Unable to find required ApECID in parameters\n"); return -1; } plist_dict_insert_item(request, "ApECID", plist_copy(node)); node = NULL; /* ApNonce */ node = plist_dict_get_item(parameters, "ApNonce"); if (!node || plist_get_node_type(node) != PLIST_DATA) { error("ERROR: Unable to find required ApNonce in parameters\n"); return -1; } plist_dict_insert_item(request, "ApNonce", plist_copy(node)); node = NULL; plist_dict_insert_item(request, "@ApImg4Ticket", plist_new_bool(1)); /* ApSecurityMode */ node = plist_dict_get_item(request, "ApSecurityMode"); if (!node) { /* copy from parameters if available */ node = plist_dict_get_item(parameters, "ApSecurityMode"); if (!node || plist_get_node_type(node) != PLIST_BOOLEAN) { error("ERROR: Unable to find required ApSecurityMode in parameters\n"); return -1; } plist_dict_insert_item(request, "ApSecurityMode", plist_copy(node)); node = NULL; } node = plist_dict_get_item(request, "ApProductionMode"); if (!node) { /* ApProductionMode */ node = plist_dict_get_item(parameters, "ApProductionMode"); if (!node || plist_get_node_type(node) != PLIST_BOOLEAN) { error("ERROR: Unable to find required ApProductionMode in parameters\n"); return -1; } plist_dict_insert_item(request, "ApProductionMode", plist_copy(node)); node = NULL; } /* ApSepNonce */ node = plist_dict_get_item(parameters, "ApSepNonce"); if (!node || plist_get_node_type(node) != PLIST_DATA) { error("ERROR: Unable to find required ApSepNonce in parameters\n"); return -1; } plist_dict_insert_item(request, "SepNonce", plist_copy(node)); node = NULL; return 0; } int tss_request_add_ap_img3_tags(plist_t request, plist_t parameters) { plist_t node = NULL; if (!parameters) { error("ERROR: Missing required AP parameters\n"); return -1; } /* ApNonce */ node = plist_dict_get_item(parameters, "ApNonce"); if (node) { if (plist_get_node_type(node) != PLIST_DATA) { error("ERROR: Unable to find required ApNonce in parameters\n"); return -1; } plist_dict_insert_item(request, "ApNonce", plist_copy(node)); node = NULL; } /* @APTicket */ plist_dict_insert_item(request, "@APTicket", plist_new_bool(1)); /* ApECID */ node = plist_dict_get_item(parameters, "ApECID"); if (!node || plist_get_node_type(node) != PLIST_UINT) { error("ERROR: Unable to find required ApECID in parameters\n"); return -1; } plist_dict_insert_item(request, "ApECID", plist_copy(node)); node = NULL; /* ApBoardID */ node = plist_dict_get_item(request, "ApBoardID"); if (!node || plist_get_node_type(node) != PLIST_UINT) { error("ERROR: Unable to find required ApBoardID in request\n"); return -1; } node = NULL; /* ApChipID */ node = plist_dict_get_item(request, "ApChipID"); if (!node || plist_get_node_type(node) != PLIST_UINT) { error("ERROR: Unable to find required ApChipID in request\n"); return -1; } node = NULL; /* ApSecurityDomain */ node = plist_dict_get_item(request, "ApSecurityDomain"); if (!node || plist_get_node_type(node) != PLIST_UINT) { error("ERROR: Unable to find required ApSecurityDomain in request\n"); return -1; } node = NULL; /* ApProductionMode */ node = plist_dict_get_item(parameters, "ApProductionMode"); if (!node || plist_get_node_type(node) != PLIST_BOOLEAN) { error("ERROR: Unable to find required ApProductionMode in parameters\n"); return -1; } plist_dict_insert_item(request, "ApProductionMode", plist_copy(node)); node = NULL; return 0; } int tss_request_add_baseband_tags(plist_t request, plist_t parameters) { plist_t node = NULL; if (!parameters) { error("ERROR: Missing required AP parameters\n"); return -1; } /* BbNonce */ node = plist_dict_get_item(parameters, "BbNonce"); if (node) { plist_dict_insert_item(request, "BbNonce", plist_copy(node)); node = NULL; } /* @BBTicket */ plist_dict_insert_item(request, "@BBTicket", plist_new_bool(1)); /* BbGoldCertId */ node = plist_dict_get_item(parameters, "BbGoldCertId"); if (!node || plist_get_node_type(node) != PLIST_UINT) { error("ERROR: Unable to find required BbGoldCertId in parameters\n"); return -1; } plist_dict_insert_item(request, "BbGoldCertId", plist_copy(node)); node = NULL; /* BbSNUM */ node = plist_dict_get_item(parameters, "BbSNUM"); if (!node || plist_get_node_type(node) != PLIST_DATA) { error("ERROR: Unable to find required BbSNUM in parameters\n"); return -1; } plist_dict_insert_item(request, "BbSNUM", plist_copy(node)); node = NULL; return 0; } int tss_request_add_common_tags_from_manifest(plist_t request, plist_t build_identity, plist_t overrides) { plist_t node = NULL; char* string = NULL; /* UniqueBuildID */ char* unique_build_data = NULL; uint64_t unique_build_size = 0; node = plist_dict_get_item(build_identity, "UniqueBuildID"); if (!node || plist_get_node_type(node) != PLIST_DATA) { error("ERROR: Unable to find UniqueBuildID node\n"); return -1; } plist_get_data_val(node, &unique_build_data, &unique_build_size); plist_dict_insert_item(request, "UniqueBuildID", plist_new_data(unique_build_data, unique_build_size)); free(unique_build_data); node = NULL; /* ApChipID */ int chip_id = 0; node = plist_dict_get_item(build_identity, "ApChipID"); if (!node || plist_get_node_type(node) != PLIST_STRING) { error("ERROR: Unable to find ApChipID node\n"); return -1; } plist_get_string_val(node, &string); sscanf(string, "%x", &chip_id); plist_dict_insert_item(request, "ApChipID", plist_new_uint(chip_id)); free(string); string = NULL; node = NULL; /* ApBoardID */ int board_id = 0; node = plist_dict_get_item(build_identity, "ApBoardID"); if (!node || plist_get_node_type(node) != PLIST_STRING) { error("ERROR: Unable to find ApBoardID node\n"); return -1; } plist_get_string_val(node, &string); sscanf(string, "%x", &board_id); plist_dict_insert_item(request, "ApBoardID", plist_new_uint(board_id)); free(string); string = NULL; node = NULL; /* ApSecurityDomain */ int security_domain = 0; node = plist_dict_get_item(build_identity, "ApSecurityDomain"); if (!node || plist_get_node_type(node) != PLIST_STRING) { error("ERROR: Unable to find ApSecurityDomain node\n"); return -1; } plist_get_string_val(node, &string); sscanf(string, "%x", &security_domain); plist_dict_insert_item(request, "ApSecurityDomain", plist_new_uint(security_domain)); free(string); string = NULL; node = NULL; /* apply overrides */ if (overrides) { plist_dict_merge(&request, overrides); } return 0; } int tss_request_add_ap_tags_from_manifest(plist_t request, plist_t build_identity, plist_t overrides) { /* loop over components from build manifest */ plist_t manifest_node = plist_dict_get_item(build_identity, "Manifest"); if (!manifest_node || plist_get_node_type(manifest_node) != PLIST_DICT) { error("ERROR: Unable to find restore manifest\n"); return -1; } /* add components to request */ char* key = NULL; plist_t manifest_entry = NULL; plist_dict_iter iter = NULL; plist_dict_new_iter(manifest_node, &iter); while (1) { plist_dict_next_item(manifest_node, iter, &key, &manifest_entry); if (key == NULL) break; if (!manifest_entry || plist_get_node_type(manifest_entry) != PLIST_DICT) { error("ERROR: Unable to fetch BuildManifest entry\n"); return -1; } /* do not populate BaseBandFirmware, only in basebaseband request */ if ((strcmp(key, "BasebandFirmware") == 0)) { free(key); continue; } /* FIXME: only used with diagnostics firmware */ if ((strcmp(key, "Diags") == 0) || (strcmp(key, "OS") == 0)) { free(key); continue; } /* copy this entry to request */ plist_t tss_entry = plist_copy(manifest_entry); /* remove obsolete Info node */ plist_dict_remove_item(tss_entry, "Info"); if (plist_access_path(manifest_entry, 2, "Info", "RestoreRequestRules")) { plist_dict_insert_item(tss_entry, "EPRO", plist_new_bool(1)); plist_dict_insert_item(tss_entry, "ESEC", plist_new_bool(1)); } plist_dict_insert_item(request, key, tss_entry); free(key); } /* apply overrides */ if (overrides) { plist_dict_merge(&request, overrides); } return 0; } int tss_request_add_baseband_tags_from_manifest(plist_t request, plist_t build_identity, plist_t overrides) { plist_t bb_node = NULL; /* BbChipID */ int bb_chip_id = 0; char* bb_chip_id_string = NULL; bb_node = plist_dict_get_item(build_identity, "BbChipID"); if (!bb_node || plist_get_node_type(bb_node) != PLIST_STRING) { error("ERROR: Unable to find BbChipID node\n"); return -1; } plist_get_string_val(bb_node, &bb_chip_id_string); sscanf(bb_chip_id_string, "%x", &bb_chip_id); plist_dict_insert_item(request, "BbChipID", plist_new_uint(bb_chip_id)); bb_node = NULL; /* BbProvisioningManifestKeyHash */ bb_node = plist_dict_get_item(build_identity, "BbProvisioningManifestKeyHash"); if (bb_node && plist_get_node_type(bb_node) == PLIST_DATA) { plist_dict_insert_item(request, "BbProvisioningManifestKeyHash", plist_copy(bb_node)); } else { error("WARNING: Unable to find BbProvisioningManifestKeyHash node\n"); } bb_node = NULL; /* BbActivationManifestKeyHash - Used by Qualcomm MDM6610 */ bb_node = plist_dict_get_item(build_identity, "BbActivationManifestKeyHash"); if (bb_node && plist_get_node_type(bb_node) == PLIST_DATA) { plist_dict_insert_item(request, "BbActivationManifestKeyHash", plist_copy(bb_node)); } else { error("WARNING: Unable to find BbActivationManifestKeyHash node\n"); } bb_node = NULL; bb_node = plist_dict_get_item(build_identity, "BbCalibrationManifestKeyHash"); if (bb_node && plist_get_node_type(bb_node) == PLIST_DATA) { plist_dict_insert_item(request, "BbCalibrationManifestKeyHash", plist_copy(bb_node)); } else { error("WARNING: Unable to find BbCalibrationManifestKeyHash node\n"); } bb_node = NULL; /* BbFactoryActivationManifestKeyHash */ bb_node = plist_dict_get_item(build_identity, "BbFactoryActivationManifestKeyHash"); if (bb_node && plist_get_node_type(bb_node) == PLIST_DATA) { plist_dict_insert_item(request, "BbFactoryActivationManifestKeyHash", plist_copy(bb_node)); } else { error("WARNING: Unable to find BbFactoryActivationManifestKeyHash node\n"); } bb_node = NULL; /* BbSkeyId - Used by XMM 6180/GSM */ bb_node = plist_dict_get_item(build_identity, "BbSkeyId"); if (bb_node && plist_get_node_type(bb_node) == PLIST_DATA) { plist_dict_insert_item(request, "BbSkeyId", plist_copy(bb_node)); } else { error("WARNING: Unable to find BbSkeyId node\n"); } bb_node = NULL; /* BasebandFirmware */ bb_node = plist_access_path(build_identity, 2, "Manifest", "BasebandFirmware"); if (!bb_node || plist_get_node_type(bb_node) != PLIST_DICT) { error("ERROR: Unable to get BasebandFirmware node\n"); return -1; } plist_t bbfwdict = plist_copy(bb_node); bb_node = NULL; if (plist_dict_get_item(bbfwdict, "Info")) { plist_dict_remove_item(bbfwdict, "Info"); } plist_dict_insert_item(request, "BasebandFirmware", bbfwdict); /* apply overrides */ if (overrides) { plist_dict_merge(&request, overrides); } return 0; } size_t tss_write_callback(char* data, size_t size, size_t nmemb, tss_response* response) { size_t total = size * nmemb; if (total != 0) { response->content = realloc(response->content, response->length + total + 1); memcpy(response->content + response->length, data, total); response->content[response->length + total] = '\0'; response->length += total; } return total; } plist_t tss_request_send(plist_t tss_request, const char* server_url_string) { curl_global_init(CURL_GLOBAL_ALL); if (idevicerestore_debug) { debug_plist(tss_request); } char* request = NULL; int status_code = -1; int retry = 0; int max_retries = 15; unsigned int size = 0; char curl_error_message[CURL_ERROR_SIZE]; const char* urls[6] = { "https://gs.apple.com/TSS/controller?action=2", "https://17.171.36.30/TSS/controller?action=2", "https://17.151.36.30/TSS/controller?action=2", "http://gs.apple.com/TSS/controller?action=2", "http://17.171.36.30/TSS/controller?action=2", "http://17.151.36.30/TSS/controller?action=2" }; plist_to_xml(tss_request, &request, &size); tss_response* response = NULL; memset(curl_error_message, '\0', CURL_ERROR_SIZE); while (retry++ < max_retries) { response = NULL; CURL* handle = curl_easy_init(); if (handle == NULL) { break; } struct curl_slist* header = NULL; header = curl_slist_append(header, "Cache-Control: no-cache"); header = curl_slist_append(header, "Content-type: text/xml; charset=\"utf-8\""); header = curl_slist_append(header, "Expect:"); response = malloc(sizeof(tss_response)); if (response == NULL) { fprintf(stderr, "Unable to allocate sufficent memory\n"); return NULL; } response->length = 0; response->content = malloc(1); response->content[0] = '\0'; /* disable SSL verification to allow download from untrusted https locations */ curl_easy_setopt(handle, CURLOPT_SSL_VERIFYPEER, 0); curl_easy_setopt(handle, CURLOPT_ERRORBUFFER, curl_error_message); curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, (curl_write_callback)&tss_write_callback); curl_easy_setopt(handle, CURLOPT_WRITEDATA, response); curl_easy_setopt(handle, CURLOPT_HTTPHEADER, header); curl_easy_setopt(handle, CURLOPT_POSTFIELDS, request); curl_easy_setopt(handle, CURLOPT_USERAGENT, "InetURL/1.0"); curl_easy_setopt(handle, CURLOPT_POSTFIELDSIZE, strlen(request)); if (server_url_string) { curl_easy_setopt(handle, CURLOPT_URL, server_url_string); } else { int url_index = (retry - 1) % 6; curl_easy_setopt(handle, CURLOPT_URL, urls[url_index]); info("Request URL set to %s\n", urls[url_index]); } info("Sending TSS request attempt %d... ", retry); curl_easy_perform(handle); curl_slist_free_all(header); curl_easy_cleanup(handle); if (strstr(response->content, "MESSAGE=SUCCESS")) { status_code = 0; info("response successfully received\n"); break; } if (response->length > 0) { error("TSS server returned: %s\n", response->content); } char* status = strstr(response->content, "STATUS="); if (status) { sscanf(status+7, "%d&%*s", &status_code); } if (status_code == -1) { error("%s\n", curl_error_message); // no status code in response. retry free(response->content); free(response); sleep(2); continue; } else if (status_code == 8) { // server error (invalid bb request?) break; } else if (status_code == 49) { // server error (invalid bb data, e.g. BbSNUM?) break; } else if (status_code == 94) { // This device isn't eligible for the requested build. break; } else if (status_code == 100) { // server error, most likely the request was malformed break; } else { error("ERROR: tss_send_request: Unhandled status code %d\n", status_code); } } if (status_code != 0) { if (strstr(response->content, "MESSAGE=") != NULL) { char* message = strstr(response->content, "MESSAGE=") + strlen("MESSAGE="); error("ERROR: TSS request failed (status=%d, message=%s)\n", status_code, message); } else { error("ERROR: TSS request failed: %s (status=%d)\n", curl_error_message, status_code); } free(request); free(response->content); free(response); return NULL; } char* tss_data = strstr(response->content, "content); free(response); return NULL; } uint32_t tss_size = 0; plist_t tss_response = NULL; tss_size = response->length - (tss_data - response->content); plist_from_xml(tss_data, tss_size, &tss_response); free(response->content); free(response); if (idevicerestore_debug) { debug_plist(tss_response); } free(request); curl_global_cleanup(); return tss_response; } static int tss_response_get_data_by_key(plist_t response, const char* name, unsigned char** buffer, unsigned int* length) { plist_t node = plist_dict_get_item(response, name); if (!node || plist_get_node_type(node) != PLIST_DATA) { error("ERROR: Unable to find %s entry in TSS response\n", name); return -1; } char *data = NULL; uint64_t len = 0; plist_get_data_val(node, &data, &len); if (data) { *length = (unsigned int)len; *buffer = (unsigned char*)data; return 0; } else { error("ERROR: Unable to get %s data from TSS response\n", name); return -1; } } int tss_response_get_ap_img4_ticket(plist_t response, unsigned char** ticket, unsigned int* length) { return tss_response_get_data_by_key(response, "ApImg4Ticket", ticket, length); } int tss_response_get_ap_ticket(plist_t response, unsigned char** ticket, unsigned int* length) { return tss_response_get_data_by_key(response, "APTicket", ticket, length); } int tss_response_get_baseband_ticket(plist_t response, unsigned char** ticket, unsigned int* length) { return tss_response_get_data_by_key(response, "BBTicket", ticket, length); } int tss_response_get_path_by_entry(plist_t response, const char* entry, char** path) { char* path_string = NULL; plist_t path_node = NULL; plist_t entry_node = NULL; *path = NULL; entry_node = plist_dict_get_item(response, entry); if (!entry_node || plist_get_node_type(entry_node) != PLIST_DICT) { error("ERROR: Unable to find %s entry in TSS response\n", entry); return -1; } path_node = plist_dict_get_item(entry_node, "Path"); if (!path_node || plist_get_node_type(path_node) != PLIST_STRING) { debug("NOTE: Unable to find %s path in TSS entry\n", entry); return -1; } plist_get_string_val(path_node, &path_string); *path = path_string; return 0; } int tss_response_get_blob_by_path(plist_t tss, const char* path, unsigned char** blob) { int i = 0; uint32_t tss_size = 0; uint64_t blob_size = 0; char* entry_key = NULL; char* blob_data = NULL; char* entry_path = NULL; plist_t tss_entry = NULL; plist_t blob_node = NULL; plist_t path_node = NULL; plist_dict_iter iter = NULL; *blob = NULL; plist_dict_new_iter(tss, &iter); tss_size = plist_dict_get_size(tss); for (i = 0; i < tss_size; i++) { plist_dict_next_item(tss, iter, &entry_key, &tss_entry); if (entry_key == NULL) break; if (!tss_entry || plist_get_node_type(tss_entry) != PLIST_DICT) { continue; } path_node = plist_dict_get_item(tss_entry, "Path"); if (!path_node || plist_get_node_type(path_node) != PLIST_STRING) { error("ERROR: Unable to find TSS path node in entry %s\n", entry_key); return -1; } plist_get_string_val(path_node, &entry_path); if (strcmp(path, entry_path) == 0) { blob_node = plist_dict_get_item(tss_entry, "Blob"); if (!blob_node || plist_get_node_type(blob_node) != PLIST_DATA) { error("ERROR: Unable to find TSS blob node in entry %s\n", entry_key); return -1; } plist_get_data_val(blob_node, &blob_data, &blob_size); break; } free(entry_key); } if (blob_data == NULL || blob_size <= 0) { return -1; } *blob = (unsigned char*)blob_data; return 0; } int tss_response_get_blob_by_entry(plist_t response, const char* entry, unsigned char** blob) { uint64_t blob_size = 0; char* blob_data = NULL; plist_t blob_node = NULL; plist_t tss_entry = NULL; *blob = NULL; tss_entry = plist_dict_get_item(response, entry); if (!tss_entry || plist_get_node_type(tss_entry) != PLIST_DICT) { error("ERROR: Unable to find %s entry in TSS response\n", entry); return -1; } blob_node = plist_dict_get_item(tss_entry, "Blob"); if (!blob_node || plist_get_node_type(blob_node) != PLIST_DATA) { error("ERROR: Unable to find blob in %s entry\n", entry); return -1; } plist_get_data_val(blob_node, &blob_data, &blob_size); *blob = (unsigned char*)blob_data; return 0; }