updater-script修改实战

1. 解压update.zip

目录结构为：

|----boot.img
|----system/
|----recovery/
    |----recovery-from-boot.p
    |----etc/
        |----install-recovery.sh
|---META-INF/
    |CERT.RSA
    |CERT.SF
    |MANIFEST.MF
    |----com/
         |----google/
             |----android/
                  |----update-binary
                  |----updater-script
          |----android/
               |----metadata
               |----otacert

2. 添加需要加入的目录

|----test_dir
    |-----file1
    |-----file2
    |-----file3
    |-----file4
    |-----file5
    |-----file6
    |----delete_file.sh
    |----dir
        |-----file5

delete_file.sh的内容为：

rm /data/file3.txt

主要为了测试在Recovery执行shell脚本

assert(getprop("ro.product.device") == "rk30sdk_joyplus" ||
       getprop("ro.build.product") == "rk30sdk_joyplus");
show_progress(0.500000, 0);
format("ext4", "EMMC", "/dev/block/mtd/by-name/system", "0", "/system");
mount("ext4", "EMMC", "/dev/block/mtd/by-name/system", "/system");
package_extract_dir("recovery", "/system");
package_extract_dir("system", "/system");
ui_print("yedu-lijinwei start");
mount("ext4","EMMC","/dev/block/mtd/by-name/userdata","/data");
package_extract_dir("test_dir", "/data");

symlink("Roboto-Bold.ttf", "/system/fonts/DroidSans-Bold.ttf");
symlink("Roboto-Regular.ttf", "/system/fonts/DroidSans.ttf");
symlink("mksh", "/system/bin/sh");
symlink("toolbox", "/system/bin/cat", "/system/bin/chmod",
        "/system/bin/chown", "/system/bin/cmp", "/system/bin/date",
        "/system/bin/dd", "/system/bin/df", "/system/bin/dmesg",
        "/system/bin/getevent", "/system/bin/getprop", "/system/bin/hd",
        "/system/bin/id", "/system/bin/ifconfig", "/system/bin/iftop",
        "/system/bin/insmod", "/system/bin/ioctl", "/system/bin/ionice",
        "/system/bin/kill", "/system/bin/ln", "/system/bin/log",
        "/system/bin/ls", "/system/bin/lsmod", "/system/bin/lsof",
        "/system/bin/md5", "/system/bin/mkdir", "/system/bin/mount",
        "/system/bin/mv", "/system/bin/nandread", "/system/bin/netstat",
        "/system/bin/newfs_msdos", "/system/bin/notify", "/system/bin/printenv",
        "/system/bin/ps", "/system/bin/r", "/system/bin/reboot",
        "/system/bin/renice", "/system/bin/rm", "/system/bin/rmdir",
        "/system/bin/rmmod", "/system/bin/route", "/system/bin/schedtop",
        "/system/bin/sendevent", "/system/bin/setconsole",
        "/system/bin/setprop", "/system/bin/sleep", "/system/bin/smd",
        "/system/bin/start", "/system/bin/stop", "/system/bin/sync",
        "/system/bin/top", "/system/bin/touch", "/system/bin/umount",
        "/system/bin/uptime", "/system/bin/vmstat", "/system/bin/watchprops",
        "/system/bin/wipe");
set_perm_recursive(0, 0, 0755, 0644, "/system");
set_perm_recursive(0, 2000, 0755, 0755, "/system/bin");
set_perm(0, 3003, 02750, "/system/bin/netcfg");
set_perm(0, 3004, 02755, "/system/bin/ping");
set_perm(0, 2000, 06750, "/system/bin/run-as");
set_perm_recursive(1002, 1002, 0755, 0440, "/system/etc/bluetooth");
set_perm(0, 0, 0755, "/system/etc/bluetooth");
set_perm(1000, 1000, 0640, "/system/etc/bluetooth/auto_pairing.conf");
set_perm(3002, 3002, 0444, "/system/etc/bluetooth/blacklist.conf");
set_perm(1002, 1002, 0440, "/system/etc/dbus.conf");
set_perm(1014, 2000, 0550, "/system/etc/dhcpcd/dhcpcd-run-hooks");
set_perm(0, 2000, 0550, "/system/etc/init.goldfish.sh");
set_perm(0, 0, 0544, "/system/etc/install-recovery.sh");
set_perm_recursive(0, 0, 0755, 0555, "/system/etc/ppp");
set_perm_recursive(0, 2000, 0755, 0644, "/system/vendor");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/left_eye-y0-yi45-p0-pi45-r0-ri20.lg_32/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/nose_base-y0-yi45-p0-pi45-r0-ri20.lg_32/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/right_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-2/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-r0-ri30.4a-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-rn30-ri30.5-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-rp30-ri30.5-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/recognition/face.face.y0-y0-22-b-N/full_model.bin");
set_perm_recursive(0, 2000, 0755, 0755, "/system/xbin");
set_perm(0, 0, 06755, "/system/xbin/librank");
set_perm(0, 0, 06755, "/system/xbin/procmem");
set_perm(0, 0, 06755, "/system/xbin/procrank");
set_perm(0, 0, 06755, "/system/xbin/su");
set_perm(0, 0, 06755, "/system/xbin/tcpdump");

set_perm(0, 0, 06755, "/data/delete_file.sh");
delete("/data/file1.txt");
delete("/data/mac_address.txt", "/data/file2.txt");
delete_recursive("/data/dir");
run_program("/data/delete_file.sh");
ui_print("yedu-lijinwei end");

show_progress(0.200000, 0);
show_progress(0.200000, 10);
write_raw_image(package_extract_file("boot.img"), "boot");
show_progress(0.100000, 0);
clear_misc_command();
unmount("/system");
unmount("/data");

修改的目的是，不关心系统是否比更新包新，都去更新它，后面就是删除文件及递归删除文件夹，都是好用的。
附原来的内容：

assert(!less_than_int(1370741919, getprop("ro.build.date.utc")));
assert(getprop("ro.product.device") == "rk30sdk_joyplus" ||
       getprop("ro.build.product") == "rk30sdk_joyplus");
show_progress(0.500000, 0);
format("ext4", "EMMC", "/dev/block/mtd/by-name/system", "0", "/system");
mount("ext4", "EMMC", "/dev/block/mtd/by-name/system", "/system");
package_extract_dir("recovery", "/system");
package_extract_dir("system", "/system");
symlink("Roboto-Bold.ttf", "/system/fonts/DroidSans-Bold.ttf");
symlink("Roboto-Regular.ttf", "/system/fonts/DroidSans.ttf");
symlink("mksh", "/system/bin/sh");
symlink("toolbox", "/system/bin/cat", "/system/bin/chmod",
        "/system/bin/chown", "/system/bin/cmp", "/system/bin/date",
        "/system/bin/dd", "/system/bin/df", "/system/bin/dmesg",
        "/system/bin/getevent", "/system/bin/getprop", "/system/bin/hd",
        "/system/bin/id", "/system/bin/ifconfig", "/system/bin/iftop",
        "/system/bin/insmod", "/system/bin/ioctl", "/system/bin/ionice",
        "/system/bin/kill", "/system/bin/ln", "/system/bin/log",
        "/system/bin/ls", "/system/bin/lsmod", "/system/bin/lsof",
        "/system/bin/md5", "/system/bin/mkdir", "/system/bin/mount",
        "/system/bin/mv", "/system/bin/nandread", "/system/bin/netstat",
        "/system/bin/newfs_msdos", "/system/bin/notify", "/system/bin/printenv",
        "/system/bin/ps", "/system/bin/r", "/system/bin/reboot",
        "/system/bin/renice", "/system/bin/rm", "/system/bin/rmdir",
        "/system/bin/rmmod", "/system/bin/route", "/system/bin/schedtop",
        "/system/bin/sendevent", "/system/bin/setconsole",
        "/system/bin/setprop", "/system/bin/sleep", "/system/bin/smd",
        "/system/bin/start", "/system/bin/stop", "/system/bin/sync",
        "/system/bin/top", "/system/bin/touch", "/system/bin/umount",
        "/system/bin/uptime", "/system/bin/vmstat", "/system/bin/watchprops",
        "/system/bin/wipe");
set_perm_recursive(0, 0, 0755, 0644, "/system");
set_perm_recursive(0, 2000, 0755, 0755, "/system/bin");
set_perm(0, 3003, 02750, "/system/bin/netcfg");
set_perm(0, 3004, 02755, "/system/bin/ping");
set_perm(0, 2000, 06750, "/system/bin/run-as");
set_perm_recursive(1002, 1002, 0755, 0440, "/system/etc/bluetooth");
set_perm(0, 0, 0755, "/system/etc/bluetooth");
set_perm(1000, 1000, 0640, "/system/etc/bluetooth/auto_pairing.conf");
set_perm(3002, 3002, 0444, "/system/etc/bluetooth/blacklist.conf");
set_perm(1002, 1002, 0440, "/system/etc/dbus.conf");
set_perm(1014, 2000, 0550, "/system/etc/dhcpcd/dhcpcd-run-hooks");
set_perm(0, 2000, 0550, "/system/etc/init.goldfish.sh");
set_perm(0, 0, 0544, "/system/etc/install-recovery.sh");
set_perm_recursive(0, 0, 0755, 0555, "/system/etc/ppp");
set_perm_recursive(0, 2000, 0755, 0644, "/system/vendor");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/left_eye-y0-yi45-p0-pi45-r0-ri20.lg_32/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/nose_base-y0-yi45-p0-pi45-r0-ri20.lg_32/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/right_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-2/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-r0-ri30.4a-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-rn30-ri30.5-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-rp30-ri30.5-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/recognition/face.face.y0-y0-22-b-N/full_model.bin");
set_perm_recursive(0, 2000, 0755, 0755, "/system/xbin");
set_perm(0, 0, 06755, "/system/xbin/librank");
set_perm(0, 0, 06755, "/system/xbin/procmem");
set_perm(0, 0, 06755, "/system/xbin/procrank");
set_perm(0, 0, 06755, "/system/xbin/su");
set_perm(0, 0, 06755, "/system/xbin/tcpdump");
show_progress(0.200000, 0);
show_progress(0.200000, 10);
write_raw_image(package_extract_file("boot.img"), "boot");
show_progress(0.100000, 0);
clear_misc_command();
unmount("/system");

3. 添加到压缩包，记住不能有二级目录，保证解开包就是上述目录下的文件，而不是你的压缩包的名字。（选中文件进行压缩）

4. 放到Android下去签名：

我写了一个签名脚本，位于Android根目录下，sign_update.sh：

java -Xmx2048m -jar out/host/linux-x86/framework/signapk.jar -w build/target/product/security/testkey.x509.pem build/target/product/security/testkey.pk8 $1 update_new.zip

./sign_update.sh update.zip就可得到update_new.zip的签过名的更新包

5. 可以测试了