Add iOS 2 support

1 files changed, 49 insertions, 5 deletions

diff --git a/src/libirecovery.c b/src/libirecovery.c
index dd07110..3146e40 100644
--- a/src/libirecovery.c
+++ b/src/libirecovery.c
@@ -795,6 +795,7 @@ static void irecv_load_device_info_from_iboot_string(irecv_client_t client, cons
         ptr = strstr(iboot_string, "CPID:");
         if (ptr != NULL) {
                 sscanf(ptr, "CPID:%x", &client->device_info.cpid);
+                client->device_info.have_cpid = 1;
         } else {
                 // early iOS 1 doesn't identify itself
                 client->device_info.cpid = 0x8900;
@@ -803,16 +804,19 @@ static void irecv_load_device_info_from_iboot_string(irecv_client_t client, cons
         ptr = strstr(iboot_string, "CPRV:");
         if (ptr != NULL) {
                 sscanf(ptr, "CPRV:%x", &client->device_info.cprv);
+                client->device_info.have_cprv = 1;
         }
 
         ptr = strstr(iboot_string, "CPFM:");
         if (ptr != NULL) {
                 sscanf(ptr, "CPFM:%x", &client->device_info.cpfm);
+                client->device_info.have_cpfm = 1;
         }
 
         ptr = strstr(iboot_string, "SCEP:");
         if (ptr != NULL) {
                 sscanf(ptr, "SCEP:%x", &client->device_info.scep);
+                client->device_info.have_scep = 1;
         }
 
         ptr = strstr(iboot_string, "BDID:");
@@ -820,16 +824,19 @@ static void irecv_load_device_info_from_iboot_string(irecv_client_t client, cons
                 uint64_t bdid = 0;
                 sscanf(ptr, "BDID:%" SCNx64, &bdid);
                 client->device_info.bdid = (unsigned int)bdid;
+                client->device_info.have_bdid = 1;
         }
 
         ptr = strstr(iboot_string, "ECID:");
         if (ptr != NULL) {
                 sscanf(ptr, "ECID:%" SCNx64, &client->device_info.ecid);
+                client->device_info.have_ecid = 1;
         }
 
         ptr = strstr(iboot_string, "IBFL:");
         if (ptr != NULL) {
                 sscanf(ptr, "IBFL:%x", &client->device_info.ibfl);
+                client->device_info.have_ibfl = 1;
         }
 
         char tmp[256];
@@ -3143,7 +3150,7 @@ irecv_error_t irecv_device_event_unsubscribe(irecv_device_event_context_t contex
 #endif
 }
 
-irecv_error_t irecv_close(irecv_client_t client)
+static irecv_error_t irecv_cleanup(irecv_client_t client)
 {
 #ifdef USE_DUMMY
         return IRECV_E_UNSUPPORTED;
@@ -3187,15 +3194,23 @@ irecv_error_t irecv_close(irecv_client_t client)
                 free(client->device_info.serial_string);
                 free(client->device_info.ap_nonce);
                 free(client->device_info.sep_nonce);
-
-                free(client);
-                client = NULL;
         }
 
         return IRECV_E_SUCCESS;
 #endif
 }
 
+irecv_error_t irecv_close(irecv_client_t client)
+{
+        irecv_error_t ret = IRECV_E_SUCCESS;
+        if (client) {
+                ret = irecv_cleanup(client);
+                free(client);
+                client = NULL;
+        }
+        return ret;
+}
+
 void irecv_set_debug_level(int level)
 {
         libirecovery_debug = level;
@@ -3472,6 +3487,7 @@ irecv_error_t irecv_send_buffer(irecv_client_t client, unsigned char* buffer, un
         irecv_error_t error = 0;
         int recovery_mode = ((client->mode != IRECV_K_DFU_MODE) && (client->mode != IRECV_K_PORT_DFU_MODE) && (client->mode != IRECV_K_WTF_MODE));
         int legacy_recovery_mode = 0;
+        int isiOS2 = 0;
 
         if (recovery_mode && client->device_info.cpid == 0x8900 && !client->device_info.ecid) {
 #ifdef DEBUG
@@ -3484,6 +3500,17 @@ irecv_error_t irecv_send_buffer(irecv_client_t client, unsigned char* buffer, un
                 legacy_recovery_mode = 1;
         }
 
+        if (recovery_mode && !legacy_recovery_mode) {
+                // we are in recovery mode and we are not dealing with iOS 1.x
+                if ((client->device_info.cpid == 0x8900 || client->device_info.cpid == 0x8720) && !client->device_info.have_ibfl) {
+                        // iOS 2.x doesn't have IBFL tag, but iOS 3 does
+                        // Also, to avoid false activation of this codepath, restrict it to the only two CPID which can run iOS 2
+                        recovery_mode = 0; // iOS 2 recovery mode works same as DFU mode
+                        isiOS2 = 1;
+                        options |= IRECV_SEND_OPT_DFU_NOTIFY_FINISH;
+                }
+        }
+
         if (check_context(client) != IRECV_E_SUCCESS)
                 return IRECV_E_NO_DEVICE;
 
@@ -3536,6 +3563,14 @@ irecv_error_t irecv_send_buffer(irecv_client_t client, unsigned char* buffer, un
                 case 2:
                         /* DFU IDLE */
                         break;
+                case 8:
+                        /* DFU WAIT RESET */
+                        if (!isiOS2) {
+                                debug("Unexpected state %d in non-iOS2 mode!, issuing ABORT\n", state);
+                                irecv_usb_control_transfer(client, 0x21, 6, 0, 0, NULL, 0, USB_TIMEOUT);
+                                error = IRECV_E_USB_UPLOAD;
+                        }
+                        break;
                 case 10:
                         debug("DFU ERROR, issuing CLRSTATUS\n");
                         irecv_usb_control_transfer(client, 0x21, 4, 0, 0, NULL, 0, USB_TIMEOUT);
@@ -3673,6 +3708,10 @@ irecv_error_t irecv_send_buffer(irecv_client_t client, unsigned char* buffer, un
                 }
 
                 irecv_reset(client);
+
+                if (isiOS2) {
+                        irecv_reconnect(client, 0);
+                }
         }
 
         if (legacy_recovery_mode) {
@@ -4228,7 +4267,7 @@ irecv_client_t irecv_reconnect(irecv_client_t client, int initial_pause)
         uint64_t ecid = client->device_info.ecid;
 
         if (check_context(client) == IRECV_E_SUCCESS) {
-                irecv_close(client);
+                irecv_cleanup(client);
         }
 
         if (initial_pause > 0) {
@@ -4248,6 +4287,11 @@ irecv_client_t irecv_reconnect(irecv_client_t client, int initial_pause)
         new_client->postcommand_callback = postcommand_callback;
         new_client->disconnected_callback = disconnected_callback;
 
+        // keep old handle valid
+        memcpy(client, new_client, sizeof(*client));
+        free(new_client);
+        new_client = client;
+
         if (new_client->connected_callback != NULL) {
                 irecv_event_t event;
                 event.size = 0;