1 files changed, 826 insertions, 0 deletions

diff --git a/recovery.cpp b/recovery.cpp
new file mode 100644
index 000000000..7c1d7fb0f
--- /dev/null
+++ b/recovery.cpp
@@ -0,0 +1,826 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <limits.h>
+#include <linux/input.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+#include <dirent.h>
+
+#include "bootloader.h"
+#include "common.h"
+#include "cutils/properties.h"
+#include "cutils/android_reboot.h"
+#include "install.h"
+#include "minui/minui.h"
+#include "minzip/DirUtil.h"
+#include "roots.h"
+#include "recovery_ui.h"
+#include "ui.h"
+
+static const struct option OPTIONS[] = {
+  { "send_intent", required_argument, NULL, 's' },
+  { "update_package", required_argument, NULL, 'u' },
+  { "wipe_data", no_argument, NULL, 'w' },
+  { "wipe_cache", no_argument, NULL, 'c' },
+  { "show_text", no_argument, NULL, 't' },
+  { NULL, 0, NULL, 0 },
+};
+
+static const char *COMMAND_FILE = "/cache/recovery/command";
+static const char *INTENT_FILE = "/cache/recovery/intent";
+static const char *LOG_FILE = "/cache/recovery/log";
+static const char *LAST_LOG_FILE = "/cache/recovery/last_log";
+static const char *LAST_INSTALL_FILE = "/cache/recovery/last_install";
+static const char *CACHE_ROOT = "/cache";
+static const char *SDCARD_ROOT = "/sdcard";
+static const char *TEMPORARY_LOG_FILE = "/tmp/recovery.log";
+static const char *TEMPORARY_INSTALL_FILE = "/tmp/last_install";
+static const char *SIDELOAD_TEMP_DIR = "/tmp/sideload";
+
+extern UIParameters ui_parameters;    // from ui.c
+
+/*
+ * The recovery tool communicates with the main system through /cache files.
+ *   /cache/recovery/command - INPUT - command line for tool, one arg per line
+ *   /cache/recovery/log - OUTPUT - combined log file from recovery run(s)
+ *   /cache/recovery/intent - OUTPUT - intent that was passed in
+ *
+ * The arguments which may be supplied in the recovery.command file:
+ *   --send_intent=anystring - write the text out to recovery.intent
+ *   --update_package=path - verify install an OTA package file
+ *   --wipe_data - erase user data (and cache), then reboot
+ *   --wipe_cache - wipe cache (but not user data), then reboot
+ *   --set_encrypted_filesystem=on|off - enables / diasables encrypted fs
+ *
+ * After completing, we remove /cache/recovery/command and reboot.
+ * Arguments may also be supplied in the bootloader control block (BCB).
+ * These important scenarios must be safely restartable at any point:
+ *
+ * FACTORY RESET
+ * 1. user selects "factory reset"
+ * 2. main system writes "--wipe_data" to /cache/recovery/command
+ * 3. main system reboots into recovery
+ * 4. get_args() writes BCB with "boot-recovery" and "--wipe_data"
+ *    -- after this, rebooting will restart the erase --
+ * 5. erase_volume() reformats /data
+ * 6. erase_volume() reformats /cache
+ * 7. finish_recovery() erases BCB
+ *    -- after this, rebooting will restart the main system --
+ * 8. main() calls reboot() to boot main system
+ *
+ * OTA INSTALL
+ * 1. main system downloads OTA package to /cache/some-filename.zip
+ * 2. main system writes "--update_package=/cache/some-filename.zip"
+ * 3. main system reboots into recovery
+ * 4. get_args() writes BCB with "boot-recovery" and "--update_package=..."
+ *    -- after this, rebooting will attempt to reinstall the update --
+ * 5. install_package() attempts to install the update
+ *    NOTE: the package install must itself be restartable from any point
+ * 6. finish_recovery() erases BCB
+ *    -- after this, rebooting will (try to) restart the main system --
+ * 7. ** if install failed **
+ *    7a. prompt_and_wait() shows an error icon and waits for the user
+ *    7b; the user reboots (pulling the battery, etc) into the main system
+ * 8. main() calls maybe_install_firmware_update()
+ *    ** if the update contained radio/hboot firmware **:
+ *    8a. m_i_f_u() writes BCB with "boot-recovery" and "--wipe_cache"
+ *        -- after this, rebooting will reformat cache & restart main system --
+ *    8b. m_i_f_u() writes firmware image into raw cache partition
+ *    8c. m_i_f_u() writes BCB with "update-radio/hboot" and "--wipe_cache"
+ *        -- after this, rebooting will attempt to reinstall firmware --
+ *    8d. bootloader tries to flash firmware
+ *    8e. bootloader writes BCB with "boot-recovery" (keeping "--wipe_cache")
+ *        -- after this, rebooting will reformat cache & restart main system --
+ *    8f. erase_volume() reformats /cache
+ *    8g. finish_recovery() erases BCB
+ *        -- after this, rebooting will (try to) restart the main system --
+ * 9. main() calls reboot() to boot main system
+ */
+
+static const int MAX_ARG_LENGTH = 4096;
+static const int MAX_ARGS = 100;
+
+// open a given path, mounting partitions as necessary
+FILE*
+fopen_path(const char *path, const char *mode) {
+    if (ensure_path_mounted(path) != 0) {
+        LOGE("Can't mount %s\n", path);
+        return NULL;
+    }
+
+    // When writing, try to create the containing directory, if necessary.
+    // Use generous permissions, the system (init.rc) will reset them.
+    if (strchr("wa", mode[0])) dirCreateHierarchy(path, 0777, NULL, 1);
+
+    FILE *fp = fopen(path, mode);
+    return fp;
+}
+
+// close a file, log an error if the error indicator is set
+static void
+check_and_fclose(FILE *fp, const char *name) {
+    fflush(fp);
+    if (ferror(fp)) LOGE("Error in %s\n(%s)\n", name, strerror(errno));
+    fclose(fp);
+}
+
+// command line args come from, in decreasing precedence:
+//   - the actual command line
+//   - the bootloader control block (one per line, after "recovery")
+//   - the contents of COMMAND_FILE (one per line)
+static void
+get_args(int *argc, char ***argv) {
+    struct bootloader_message boot;
+    memset(&boot, 0, sizeof(boot));
+    get_bootloader_message(&boot);  // this may fail, leaving a zeroed structure
+
+    if (boot.command[0] != 0 && boot.command[0] != 255) {
+        LOGI("Boot command: %.*s\n", sizeof(boot.command), boot.command);
+    }
+
+    if (boot.status[0] != 0 && boot.status[0] != 255) {
+        LOGI("Boot status: %.*s\n", sizeof(boot.status), boot.status);
+    }
+
+    // --- if arguments weren't supplied, look in the bootloader control block
+    if (*argc <= 1) {
+        boot.recovery[sizeof(boot.recovery) - 1] = '\0';  // Ensure termination
+        const char *arg = strtok(boot.recovery, "\n");
+        if (arg != NULL && !strcmp(arg, "recovery")) {
+            *argv = (char **) malloc(sizeof(char *) * MAX_ARGS);
+            (*argv)[0] = strdup(arg);
+            for (*argc = 1; *argc < MAX_ARGS; ++*argc) {
+                if ((arg = strtok(NULL, "\n")) == NULL) break;
+                (*argv)[*argc] = strdup(arg);
+            }
+            LOGI("Got arguments from boot message\n");
+        } else if (boot.recovery[0] != 0 && boot.recovery[0] != 255) {
+            LOGE("Bad boot message\n\"%.20s\"\n", boot.recovery);
+        }
+    }
+
+    // --- if that doesn't work, try the command file
+    if (*argc <= 1) {
+        FILE *fp = fopen_path(COMMAND_FILE, "r");
+        if (fp != NULL) {
+            char *argv0 = (*argv)[0];
+            *argv = (char **) malloc(sizeof(char *) * MAX_ARGS);
+            (*argv)[0] = argv0;  // use the same program name
+
+            char buf[MAX_ARG_LENGTH];
+            for (*argc = 1; *argc < MAX_ARGS; ++*argc) {
+                if (!fgets(buf, sizeof(buf), fp)) break;
+                (*argv)[*argc] = strdup(strtok(buf, "\r\n"));  // Strip newline.
+            }
+
+            check_and_fclose(fp, COMMAND_FILE);
+            LOGI("Got arguments from %s\n", COMMAND_FILE);
+        }
+    }
+
+    // --> write the arguments we have back into the bootloader control block
+    // always boot into recovery after this (until finish_recovery() is called)
+    strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
+    strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery));
+    int i;
+    for (i = 1; i < *argc; ++i) {
+        strlcat(boot.recovery, (*argv)[i], sizeof(boot.recovery));
+        strlcat(boot.recovery, "\n", sizeof(boot.recovery));
+    }
+    set_bootloader_message(&boot);
+}
+
+static void
+set_sdcard_update_bootloader_message() {
+    struct bootloader_message boot;
+    memset(&boot, 0, sizeof(boot));
+    strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
+    strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery));
+    set_bootloader_message(&boot);
+}
+
+// How much of the temp log we have copied to the copy in cache.
+static long tmplog_offset = 0;
+
+static void
+copy_log_file(const char* source, const char* destination, int append) {
+    FILE *log = fopen_path(destination, append ? "a" : "w");
+    if (log == NULL) {
+        LOGE("Can't open %s\n", destination);
+    } else {
+        FILE *tmplog = fopen(source, "r");
+        if (tmplog != NULL) {
+            if (append) {
+                fseek(tmplog, tmplog_offset, SEEK_SET);  // Since last write
+            }
+            char buf[4096];
+            while (fgets(buf, sizeof(buf), tmplog)) fputs(buf, log);
+            if (append) {
+                tmplog_offset = ftell(tmplog);
+            }
+            check_and_fclose(tmplog, source);
+        }
+        check_and_fclose(log, destination);
+    }
+}
+
+
+// clear the recovery command and prepare to boot a (hopefully working) system,
+// copy our log file to cache as well (for the system to read), and
+// record any intent we were asked to communicate back to the system.
+// this function is idempotent: call it as many times as you like.
+static void
+finish_recovery(const char *send_intent) {
+    // By this point, we're ready to return to the main system...
+    if (send_intent != NULL) {
+        FILE *fp = fopen_path(INTENT_FILE, "w");
+        if (fp == NULL) {
+            LOGE("Can't open %s\n", INTENT_FILE);
+        } else {
+            fputs(send_intent, fp);
+            check_and_fclose(fp, INTENT_FILE);
+        }
+    }
+
+    // Copy logs to cache so the system can find out what happened.
+    copy_log_file(TEMPORARY_LOG_FILE, LOG_FILE, true);
+    copy_log_file(TEMPORARY_LOG_FILE, LAST_LOG_FILE, false);
+    copy_log_file(TEMPORARY_INSTALL_FILE, LAST_INSTALL_FILE, false);
+    chmod(LOG_FILE, 0600);
+    chown(LOG_FILE, 1000, 1000);   // system user
+    chmod(LAST_LOG_FILE, 0640);
+    chmod(LAST_INSTALL_FILE, 0644);
+
+    // Reset to mormal system boot so recovery won't cycle indefinitely.
+    struct bootloader_message boot;
+    memset(&boot, 0, sizeof(boot));
+    set_bootloader_message(&boot);
+
+    // Remove the command file, so recovery won't repeat indefinitely.
+    if (ensure_path_mounted(COMMAND_FILE) != 0 ||
+        (unlink(COMMAND_FILE) && errno != ENOENT)) {
+        LOGW("Can't unlink %s\n", COMMAND_FILE);
+    }
+
+    ensure_path_unmounted(CACHE_ROOT);
+    sync();  // For good measure.
+}
+
+static int
+erase_volume(const char *volume) {
+    ui_set_background(BACKGROUND_ICON_INSTALLING);
+    ui_show_indeterminate_progress();
+    ui_print("Formatting %s...\n", volume);
+
+    ensure_path_unmounted(volume);
+
+    if (strcmp(volume, "/cache") == 0) {
+        // Any part of the log we'd copied to cache is now gone.
+        // Reset the pointer so we copy from the beginning of the temp
+        // log.
+        tmplog_offset = 0;
+    }
+
+    return format_volume(volume);
+}
+
+static char*
+copy_sideloaded_package(const char* original_path) {
+  if (ensure_path_mounted(original_path) != 0) {
+    LOGE("Can't mount %s\n", original_path);
+    return NULL;
+  }
+
+  if (ensure_path_mounted(SIDELOAD_TEMP_DIR) != 0) {
+    LOGE("Can't mount %s\n", SIDELOAD_TEMP_DIR);
+    return NULL;
+  }
+
+  if (mkdir(SIDELOAD_TEMP_DIR, 0700) != 0) {
+    if (errno != EEXIST) {
+      LOGE("Can't mkdir %s (%s)\n", SIDELOAD_TEMP_DIR, strerror(errno));
+      return NULL;
+    }
+  }
+
+  // verify that SIDELOAD_TEMP_DIR is exactly what we expect: a
+  // directory, owned by root, readable and writable only by root.
+  struct stat st;
+  if (stat(SIDELOAD_TEMP_DIR, &st) != 0) {
+    LOGE("failed to stat %s (%s)\n", SIDELOAD_TEMP_DIR, strerror(errno));
+    return NULL;
+  }
+  if (!S_ISDIR(st.st_mode)) {
+    LOGE("%s isn't a directory\n", SIDELOAD_TEMP_DIR);
+    return NULL;
+  }
+  if ((st.st_mode & 0777) != 0700) {
+    LOGE("%s has perms %o\n", SIDELOAD_TEMP_DIR, st.st_mode);
+    return NULL;
+  }
+  if (st.st_uid != 0) {
+    LOGE("%s owned by %lu; not root\n", SIDELOAD_TEMP_DIR, st.st_uid);
+    return NULL;
+  }
+
+  char copy_path[PATH_MAX];
+  strcpy(copy_path, SIDELOAD_TEMP_DIR);
+  strcat(copy_path, "/package.zip");
+
+  char* buffer = (char*)malloc(BUFSIZ);
+  if (buffer == NULL) {
+    LOGE("Failed to allocate buffer\n");
+    return NULL;
+  }
+
+  size_t read;
+  FILE* fin = fopen(original_path, "rb");
+  if (fin == NULL) {
+    LOGE("Failed to open %s (%s)\n", original_path, strerror(errno));
+    return NULL;
+  }
+  FILE* fout = fopen(copy_path, "wb");
+  if (fout == NULL) {
+    LOGE("Failed to open %s (%s)\n", copy_path, strerror(errno));
+    return NULL;
+  }
+
+  while ((read = fread(buffer, 1, BUFSIZ, fin)) > 0) {
+    if (fwrite(buffer, 1, read, fout) != read) {
+      LOGE("Short write of %s (%s)\n", copy_path, strerror(errno));
+      return NULL;
+    }
+  }
+
+  free(buffer);
+
+  if (fclose(fout) != 0) {
+    LOGE("Failed to close %s (%s)\n", copy_path, strerror(errno));
+    return NULL;
+  }
+
+  if (fclose(fin) != 0) {
+    LOGE("Failed to close %s (%s)\n", original_path, strerror(errno));
+    return NULL;
+  }
+
+  // "adb push" is happy to overwrite read-only files when it's
+  // running as root, but we'll try anyway.
+  if (chmod(copy_path, 0400) != 0) {
+    LOGE("Failed to chmod %s (%s)\n", copy_path, strerror(errno));
+    return NULL;
+  }
+
+  return strdup(copy_path);
+}
+
+static const char**
+prepend_title(const char** headers) {
+    const char* title[] = { "Android system recovery <"
+                            EXPAND(RECOVERY_API_VERSION) "e>",
+                            "",
+                            NULL };
+
+    // count the number of lines in our title, plus the
+    // caller-provided headers.
+    int count = 0;
+    const char** p;
+    for (p = title; *p; ++p, ++count);
+    for (p = headers; *p; ++p, ++count);
+
+    const char** new_headers = (const char**)malloc((count+1) * sizeof(char*));
+    const char** h = new_headers;
+    for (p = title; *p; ++p, ++h) *h = *p;
+    for (p = headers; *p; ++p, ++h) *h = *p;
+    *h = NULL;
+
+    return new_headers;
+}
+
+static int
+get_menu_selection(const char* const * headers, const char* const * items,
+                   int menu_only, int initial_selection) {
+    // throw away keys pressed previously, so user doesn't
+    // accidentally trigger menu items.
+    ui_clear_key_queue();
+
+    ui_start_menu(headers, items, initial_selection);
+    int selected = initial_selection;
+    int chosen_item = -1;
+
+    while (chosen_item < 0) {
+        int key = ui_wait_key();
+        int visible = ui_text_visible();
+
+        if (key == -1) {   // ui_wait_key() timed out
+            if (ui_text_ever_visible()) {
+                continue;
+            } else {
+                LOGI("timed out waiting for key input; rebooting.\n");
+                ui_end_menu();
+                return ITEM_REBOOT;
+            }
+        }
+
+        int action = device_handle_key(key, visible);
+
+        if (action < 0) {
+            switch (action) {
+                case HIGHLIGHT_UP:
+                    --selected;
+                    selected = ui_menu_select(selected);
+                    break;
+                case HIGHLIGHT_DOWN:
+                    ++selected;
+                    selected = ui_menu_select(selected);
+                    break;
+                case SELECT_ITEM:
+                    chosen_item = selected;
+                    break;
+                case NO_ACTION:
+                    break;
+            }
+        } else if (!menu_only) {
+            chosen_item = action;
+        }
+    }
+
+    ui_end_menu();
+    return chosen_item;
+}
+
+static int compare_string(const void* a, const void* b) {
+    return strcmp(*(const char**)a, *(const char**)b);
+}
+
+static int
+update_directory(const char* path, const char* unmount_when_done,
+                 int* wipe_cache) {
+    ensure_path_mounted(path);
+
+    const char* MENU_HEADERS[] = { "Choose a package to install:",
+                                   path,
+                                   "",
+                                   NULL };
+    DIR* d;
+    struct dirent* de;
+    d = opendir(path);
+    if (d == NULL) {
+        LOGE("error opening %s: %s\n", path, strerror(errno));
+        if (unmount_when_done != NULL) {
+            ensure_path_unmounted(unmount_when_done);
+        }
+        return 0;
+    }
+
+    const char** headers = prepend_title(MENU_HEADERS);
+
+    int d_size = 0;
+    int d_alloc = 10;
+    char** dirs = (char**)malloc(d_alloc * sizeof(char*));
+    int z_size = 1;
+    int z_alloc = 10;
+    char** zips = (char**)malloc(z_alloc * sizeof(char*));
+    zips[0] = strdup("../");
+
+    while ((de = readdir(d)) != NULL) {
+        int name_len = strlen(de->d_name);
+
+        if (de->d_type == DT_DIR) {
+            // skip "." and ".." entries
+            if (name_len == 1 && de->d_name[0] == '.') continue;
+            if (name_len == 2 && de->d_name[0] == '.' &&
+                de->d_name[1] == '.') continue;
+
+            if (d_size >= d_alloc) {
+                d_alloc *= 2;
+                dirs = (char**)realloc(dirs, d_alloc * sizeof(char*));
+            }
+            dirs[d_size] = (char*)malloc(name_len + 2);
+            strcpy(dirs[d_size], de->d_name);
+            dirs[d_size][name_len] = '/';
+            dirs[d_size][name_len+1] = '\0';
+            ++d_size;
+        } else if (de->d_type == DT_REG &&
+                   name_len >= 4 &&
+                   strncasecmp(de->d_name + (name_len-4), ".zip", 4) == 0) {
+            if (z_size >= z_alloc) {
+                z_alloc *= 2;
+                zips = (char**)realloc(zips, z_alloc * sizeof(char*));
+            }
+            zips[z_size++] = strdup(de->d_name);
+        }
+    }
+    closedir(d);
+
+    qsort(dirs, d_size, sizeof(char*), compare_string);
+    qsort(zips, z_size, sizeof(char*), compare_string);
+
+    // append dirs to the zips list
+    if (d_size + z_size + 1 > z_alloc) {
+        z_alloc = d_size + z_size + 1;
+        zips = (char**)realloc(zips, z_alloc * sizeof(char*));
+    }
+    memcpy(zips + z_size, dirs, d_size * sizeof(char*));
+    free(dirs);
+    z_size += d_size;
+    zips[z_size] = NULL;
+
+    int result;
+    int chosen_item = 0;
+    do {
+        chosen_item = get_menu_selection(headers, zips, 1, chosen_item);
+
+        char* item = zips[chosen_item];
+        int item_len = strlen(item);
+        if (chosen_item == 0) {          // item 0 is always "../"
+            // go up but continue browsing (if the caller is update_directory)
+            result = -1;
+            break;
+        } else if (item[item_len-1] == '/') {
+            // recurse down into a subdirectory
+            char new_path[PATH_MAX];
+            strlcpy(new_path, path, PATH_MAX);
+            strlcat(new_path, "/", PATH_MAX);
+            strlcat(new_path, item, PATH_MAX);
+            new_path[strlen(new_path)-1] = '\0';  // truncate the trailing '/'
+            result = update_directory(new_path, unmount_when_done, wipe_cache);
+            if (result >= 0) break;
+        } else {
+            // selected a zip file:  attempt to install it, and return
+            // the status to the caller.
+            char new_path[PATH_MAX];
+            strlcpy(new_path, path, PATH_MAX);
+            strlcat(new_path, "/", PATH_MAX);
+            strlcat(new_path, item, PATH_MAX);
+
+            ui_print("\n-- Install %s ...\n", path);
+            set_sdcard_update_bootloader_message();
+            char* copy = copy_sideloaded_package(new_path);
+            if (unmount_when_done != NULL) {
+                ensure_path_unmounted(unmount_when_done);
+            }
+            if (copy) {
+                result = install_package(copy, wipe_cache, TEMPORARY_INSTALL_FILE);
+                free(copy);
+            } else {
+                result = INSTALL_ERROR;
+            }
+            break;
+        }
+    } while (true);
+
+    int i;
+    for (i = 0; i < z_size; ++i) free(zips[i]);
+    free(zips);
+    free(headers);
+
+    if (unmount_when_done != NULL) {
+        ensure_path_unmounted(unmount_when_done);
+    }
+    return result;
+}
+
+static void
+wipe_data(int confirm) {
+    if (confirm) {
+        static const char** title_headers = NULL;
+
+        if (title_headers == NULL) {
+            const char* headers[] = { "Confirm wipe of all user data?",
+                                      "  THIS CAN NOT BE UNDONE.",
+                                      "",
+                                      NULL };
+            title_headers = prepend_title((const char**)headers);
+        }
+
+        const char* items[] = { " No",
+                                " No",
+                                " No",
+                                " No",
+                                " No",
+                                " No",
+                                " No",
+                                " Yes -- delete all user data",   // [7]
+                                " No",
+                                " No",
+                                " No",
+                                NULL };
+
+        int chosen_item = get_menu_selection(title_headers, items, 1, 0);
+        if (chosen_item != 7) {
+            return;
+        }
+    }
+
+    ui_print("\n-- Wiping data...\n");
+    device_wipe_data();
+    erase_volume("/data");
+    erase_volume("/cache");
+    ui_print("Data wipe complete.\n");
+}
+
+static void
+prompt_and_wait() {
+    const char** headers = prepend_title((const char**)MENU_HEADERS);
+
+    for (;;) {
+        finish_recovery(NULL);
+        ui_reset_progress();
+
+        int chosen_item = get_menu_selection(headers, MENU_ITEMS, 0, 0);
+
+        // device-specific code may take some action here.  It may
+        // return one of the core actions handled in the switch
+        // statement below.
+        chosen_item = device_perform_action(chosen_item);
+
+        int status;
+        int wipe_cache;
+        switch (chosen_item) {
+            case ITEM_REBOOT:
+                return;
+
+            case ITEM_WIPE_DATA:
+                wipe_data(ui_text_visible());
+                if (!ui_text_visible()) return;
+                break;
+
+            case ITEM_WIPE_CACHE:
+                ui_print("\n-- Wiping cache...\n");
+                erase_volume("/cache");
+                ui_print("Cache wipe complete.\n");
+                if (!ui_text_visible()) return;
+                break;
+
+            case ITEM_APPLY_SDCARD:
+                status = update_directory(SDCARD_ROOT, SDCARD_ROOT, &wipe_cache);
+                if (status == INSTALL_SUCCESS && wipe_cache) {
+                    ui_print("\n-- Wiping cache (at package request)...\n");
+                    if (erase_volume("/cache")) {
+                        ui_print("Cache wipe failed.\n");
+                    } else {
+                        ui_print("Cache wipe complete.\n");
+                    }
+                }
+                if (status >= 0) {
+                    if (status != INSTALL_SUCCESS) {
+                        ui_set_background(BACKGROUND_ICON_ERROR);
+                        ui_print("Installation aborted.\n");
+                    } else if (!ui_text_visible()) {
+                        return;  // reboot if logs aren't visible
+                    } else {
+                        ui_print("\nInstall from sdcard complete.\n");
+                    }
+                }
+                break;
+            case ITEM_APPLY_CACHE:
+                // Don't unmount cache at the end of this.
+                status = update_directory(CACHE_ROOT, NULL, &wipe_cache);
+                if (status == INSTALL_SUCCESS && wipe_cache) {
+                    ui_print("\n-- Wiping cache (at package request)...\n");
+                    if (erase_volume("/cache")) {
+                        ui_print("Cache wipe failed.\n");
+                    } else {
+                        ui_print("Cache wipe complete.\n");
+                    }
+                }
+                if (status >= 0) {
+                    if (status != INSTALL_SUCCESS) {
+                        ui_set_background(BACKGROUND_ICON_ERROR);
+                        ui_print("Installation aborted.\n");
+                    } else if (!ui_text_visible()) {
+                        return;  // reboot if logs aren't visible
+                    } else {
+                        ui_print("\nInstall from cache complete.\n");
+                    }
+                }
+                break;
+
+        }
+    }
+}
+
+static void
+print_property(const char *key, const char *name, void *cookie) {
+    printf("%s=%s\n", key, name);
+}
+
+int
+main(int argc, char **argv) {
+    time_t start = time(NULL);
+
+    // If these fail, there's not really anywhere to complain...
+    freopen(TEMPORARY_LOG_FILE, "a", stdout); setbuf(stdout, NULL);
+    freopen(TEMPORARY_LOG_FILE, "a", stderr); setbuf(stderr, NULL);
+    printf("Starting recovery on %s", ctime(&start));
+
+    device_ui_init(&ui_parameters);
+    ui_init();
+    ui_set_background(BACKGROUND_ICON_INSTALLING);
+    load_volume_table();
+    get_args(&argc, &argv);
+
+    int previous_runs = 0;
+    const char *send_intent = NULL;
+    const char *update_package = NULL;
+    int wipe_data = 0, wipe_cache = 0;
+
+    int arg;
+    while ((arg = getopt_long(argc, argv, "", OPTIONS, NULL)) != -1) {
+        switch (arg) {
+        case 'p': previous_runs = atoi(optarg); break;
+        case 's': send_intent = optarg; break;
+        case 'u': update_package = optarg; break;
+        case 'w': wipe_data = wipe_cache = 1; break;
+        case 'c': wipe_cache = 1; break;
+        case 't': ui_show_text(1); break;
+        case '?':
+            LOGE("Invalid command argument\n");
+            continue;
+        }
+    }
+
+    device_recovery_start();
+
+    printf("Command:");
+    for (arg = 0; arg < argc; arg++) {
+        printf(" \"%s\"", argv[arg]);
+    }
+    printf("\n");
+
+    if (update_package) {
+        // For backwards compatibility on the cache partition only, if
+        // we're given an old 'root' path "CACHE:foo", change it to
+        // "/cache/foo".
+        if (strncmp(update_package, "CACHE:", 6) == 0) {
+            int len = strlen(update_package) + 10;
+            char* modified_path = (char*)malloc(len);
+            strlcpy(modified_path, "/cache/", len);
+            strlcat(modified_path, update_package+6, len);
+            printf("(replacing path \"%s\" with \"%s\")\n",
+                   update_package, modified_path);
+            update_package = modified_path;
+        }
+    }
+    printf("\n");
+
+    property_list(print_property, NULL);
+    printf("\n");
+
+    int status = INSTALL_SUCCESS;
+
+    if (update_package != NULL) {
+        status = install_package(update_package, &wipe_cache, TEMPORARY_INSTALL_FILE);
+        if (status == INSTALL_SUCCESS && wipe_cache) {
+            if (erase_volume("/cache")) {
+                LOGE("Cache wipe (requested by package) failed.");
+            }
+        }
+        if (status != INSTALL_SUCCESS) ui_print("Installation aborted.\n");
+    } else if (wipe_data) {
+        if (device_wipe_data()) status = INSTALL_ERROR;
+        if (erase_volume("/data")) status = INSTALL_ERROR;
+        if (wipe_cache && erase_volume("/cache")) status = INSTALL_ERROR;
+        if (status != INSTALL_SUCCESS) ui_print("Data wipe failed.\n");
+    } else if (wipe_cache) {
+        if (wipe_cache && erase_volume("/cache")) status = INSTALL_ERROR;
+        if (status != INSTALL_SUCCESS) ui_print("Cache wipe failed.\n");
+    } else {
+        status = INSTALL_ERROR;  // No command specified
+    }
+
+    if (status != INSTALL_SUCCESS) ui_set_background(BACKGROUND_ICON_ERROR);
+    if (status != INSTALL_SUCCESS || ui_text_visible()) {
+        prompt_and_wait();
+    }
+
+    // Otherwise, get ready to boot the main system...
+    finish_recovery(send_intent);
+    ui_print("Rebooting...\n");
+    android_reboot(ANDROID_RB_RESTART, 0, 0);
+    return EXIT_SUCCESS;
+}