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authorDoug Zongker <dougz@android.com>2011-10-28 19:33:05 +0200
committerDoug Zongker <dougz@android.com>2011-10-31 18:24:09 +0100
commit28ce47cfa6919518a8c298088bf08b03bb374c0f (patch)
tree0c429bcc8f4a1935f3be97d87ebdc2f4434ee887 /install.c
parentallow recovery packages to wipe cache (diff)
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Diffstat (limited to 'install.c')
-rw-r--r--install.c310
1 files changed, 0 insertions, 310 deletions
diff --git a/install.c b/install.c
deleted file mode 100644
index 9d7595e1a..000000000
--- a/install.c
+++ /dev/null
@@ -1,310 +0,0 @@
-/*
- * 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 <limits.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include "common.h"
-#include "install.h"
-#include "mincrypt/rsa.h"
-#include "minui/minui.h"
-#include "minzip/SysUtil.h"
-#include "minzip/Zip.h"
-#include "mtdutils/mounts.h"
-#include "mtdutils/mtdutils.h"
-#include "roots.h"
-#include "verifier.h"
-
-#define ASSUMED_UPDATE_BINARY_NAME "META-INF/com/google/android/update-binary"
-#define PUBLIC_KEYS_FILE "/res/keys"
-
-// If the package contains an update binary, extract it and run it.
-static int
-try_update_binary(const char *path, ZipArchive *zip, int* wipe_cache) {
- const ZipEntry* binary_entry =
- mzFindZipEntry(zip, ASSUMED_UPDATE_BINARY_NAME);
- if (binary_entry == NULL) {
- mzCloseZipArchive(zip);
- return INSTALL_CORRUPT;
- }
-
- char* binary = "/tmp/update_binary";
- unlink(binary);
- int fd = creat(binary, 0755);
- if (fd < 0) {
- mzCloseZipArchive(zip);
- LOGE("Can't make %s\n", binary);
- return INSTALL_ERROR;
- }
- bool ok = mzExtractZipEntryToFile(zip, binary_entry, fd);
- close(fd);
- mzCloseZipArchive(zip);
-
- if (!ok) {
- LOGE("Can't copy %s\n", ASSUMED_UPDATE_BINARY_NAME);
- return INSTALL_ERROR;
- }
-
- int pipefd[2];
- pipe(pipefd);
-
- // When executing the update binary contained in the package, the
- // arguments passed are:
- //
- // - the version number for this interface
- //
- // - an fd to which the program can write in order to update the
- // progress bar. The program can write single-line commands:
- //
- // progress <frac> <secs>
- // fill up the next <frac> part of of the progress bar
- // over <secs> seconds. If <secs> is zero, use
- // set_progress commands to manually control the
- // progress of this segment of the bar
- //
- // set_progress <frac>
- // <frac> should be between 0.0 and 1.0; sets the
- // progress bar within the segment defined by the most
- // recent progress command.
- //
- // firmware <"hboot"|"radio"> <filename>
- // arrange to install the contents of <filename> in the
- // given partition on reboot.
- //
- // (API v2: <filename> may start with "PACKAGE:" to
- // indicate taking a file from the OTA package.)
- //
- // (API v3: this command no longer exists.)
- //
- // ui_print <string>
- // display <string> on the screen.
- //
- // - the name of the package zip file.
- //
-
- char** args = malloc(sizeof(char*) * 5);
- args[0] = binary;
- args[1] = EXPAND(RECOVERY_API_VERSION); // defined in Android.mk
- args[2] = malloc(10);
- sprintf(args[2], "%d", pipefd[1]);
- args[3] = (char*)path;
- args[4] = NULL;
-
- pid_t pid = fork();
- if (pid == 0) {
- close(pipefd[0]);
- execv(binary, args);
- fprintf(stdout, "E:Can't run %s (%s)\n", binary, strerror(errno));
- _exit(-1);
- }
- close(pipefd[1]);
-
- *wipe_cache = 0;
-
- char buffer[1024];
- FILE* from_child = fdopen(pipefd[0], "r");
- while (fgets(buffer, sizeof(buffer), from_child) != NULL) {
- char* command = strtok(buffer, " \n");
- if (command == NULL) {
- continue;
- } else if (strcmp(command, "progress") == 0) {
- char* fraction_s = strtok(NULL, " \n");
- char* seconds_s = strtok(NULL, " \n");
-
- float fraction = strtof(fraction_s, NULL);
- int seconds = strtol(seconds_s, NULL, 10);
-
- ui_show_progress(fraction * (1-VERIFICATION_PROGRESS_FRACTION),
- seconds);
- } else if (strcmp(command, "set_progress") == 0) {
- char* fraction_s = strtok(NULL, " \n");
- float fraction = strtof(fraction_s, NULL);
- ui_set_progress(fraction);
- } else if (strcmp(command, "ui_print") == 0) {
- char* str = strtok(NULL, "\n");
- if (str) {
- ui_print("%s", str);
- } else {
- ui_print("\n");
- }
- } else if (strcmp(command, "wipe_cache") == 0) {
- *wipe_cache = 1;
- } else {
- LOGE("unknown command [%s]\n", command);
- }
- }
- fclose(from_child);
-
- int status;
- waitpid(pid, &status, 0);
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
- LOGE("Error in %s\n(Status %d)\n", path, WEXITSTATUS(status));
- return INSTALL_ERROR;
- }
-
- return INSTALL_SUCCESS;
-}
-
-// Reads a file containing one or more public keys as produced by
-// DumpPublicKey: this is an RSAPublicKey struct as it would appear
-// as a C source literal, eg:
-//
-// "{64,0xc926ad21,{1795090719,...,-695002876},{-857949815,...,1175080310}}"
-//
-// (Note that the braces and commas in this example are actual
-// characters the parser expects to find in the file; the ellipses
-// indicate more numbers omitted from this example.)
-//
-// The file may contain multiple keys in this format, separated by
-// commas. The last key must not be followed by a comma.
-//
-// Returns NULL if the file failed to parse, or if it contain zero keys.
-static RSAPublicKey*
-load_keys(const char* filename, int* numKeys) {
- RSAPublicKey* out = NULL;
- *numKeys = 0;
-
- FILE* f = fopen(filename, "r");
- if (f == NULL) {
- LOGE("opening %s: %s\n", filename, strerror(errno));
- goto exit;
- }
-
- int i;
- bool done = false;
- while (!done) {
- ++*numKeys;
- out = realloc(out, *numKeys * sizeof(RSAPublicKey));
- RSAPublicKey* key = out + (*numKeys - 1);
- if (fscanf(f, " { %i , 0x%x , { %u",
- &(key->len), &(key->n0inv), &(key->n[0])) != 3) {
- goto exit;
- }
- if (key->len != RSANUMWORDS) {
- LOGE("key length (%d) does not match expected size\n", key->len);
- goto exit;
- }
- for (i = 1; i < key->len; ++i) {
- if (fscanf(f, " , %u", &(key->n[i])) != 1) goto exit;
- }
- if (fscanf(f, " } , { %u", &(key->rr[0])) != 1) goto exit;
- for (i = 1; i < key->len; ++i) {
- if (fscanf(f, " , %u", &(key->rr[i])) != 1) goto exit;
- }
- fscanf(f, " } } ");
-
- // if the line ends in a comma, this file has more keys.
- switch (fgetc(f)) {
- case ',':
- // more keys to come.
- break;
-
- case EOF:
- done = true;
- break;
-
- default:
- LOGE("unexpected character between keys\n");
- goto exit;
- }
- }
-
- fclose(f);
- return out;
-
-exit:
- if (f) fclose(f);
- free(out);
- *numKeys = 0;
- return NULL;
-}
-
-static int
-really_install_package(const char *path, int* wipe_cache)
-{
- ui_set_background(BACKGROUND_ICON_INSTALLING);
- ui_print("Finding update package...\n");
- ui_show_indeterminate_progress();
- LOGI("Update location: %s\n", path);
-
- if (ensure_path_mounted(path) != 0) {
- LOGE("Can't mount %s\n", path);
- return INSTALL_CORRUPT;
- }
-
- ui_print("Opening update package...\n");
-
- int numKeys;
- RSAPublicKey* loadedKeys = load_keys(PUBLIC_KEYS_FILE, &numKeys);
- if (loadedKeys == NULL) {
- LOGE("Failed to load keys\n");
- return INSTALL_CORRUPT;
- }
- LOGI("%d key(s) loaded from %s\n", numKeys, PUBLIC_KEYS_FILE);
-
- // Give verification half the progress bar...
- ui_print("Verifying update package...\n");
- ui_show_progress(
- VERIFICATION_PROGRESS_FRACTION,
- VERIFICATION_PROGRESS_TIME);
-
- int err;
- err = verify_file(path, loadedKeys, numKeys);
- free(loadedKeys);
- LOGI("verify_file returned %d\n", err);
- if (err != VERIFY_SUCCESS) {
- LOGE("signature verification failed\n");
- return INSTALL_CORRUPT;
- }
-
- /* Try to open the package.
- */
- ZipArchive zip;
- err = mzOpenZipArchive(path, &zip);
- if (err != 0) {
- LOGE("Can't open %s\n(%s)\n", path, err != -1 ? strerror(err) : "bad");
- return INSTALL_CORRUPT;
- }
-
- /* Verify and install the contents of the package.
- */
- ui_print("Installing update...\n");
- return try_update_binary(path, &zip, wipe_cache);
-}
-
-int
-install_package(const char* path, int* wipe_cache, const char* install_file)
-{
- FILE* install_log = fopen_path(install_file, "w");
- if (install_log) {
- fputs(path, install_log);
- fputc('\n', install_log);
- } else {
- LOGE("failed to open last_install: %s\n", strerror(errno));
- }
- int result = really_install_package(path, wipe_cache);
- if (install_log) {
- fputc(result == INSTALL_SUCCESS ? '1' : '0', install_log);
- fputc('\n', install_log);
- fclose(install_log);
- }
- return result;
-}