1. Android Script Creator
   
2. Update Zip Creator
   
3. В® ZIPme
   
4. Update Script Generator
   
   
   Scripts
   
   
   
5. Sh-script autogeneration updater-script co all the symbolic links and the rights to system files | another script
   
6. BROM (to create a backup of the firmware)
   
7. Utility to create ROM images of the sections, the sections themselves or just mixed

The actions are the same as described above, except for the signature.
ZIP archive signature:

• Download signapk.zip and unzip to folder<folder signapk>
  
• Assign rights to all content - "rwxrwxrwx" (chmod -R 777 ~ /<folder signapk>)
  
• We execute the signature program (signapk<archive name with extension>)

Patch root:

• folder META-INF
  
• folder application installation source (system, data, sdcard, cache, sd-ext)
  Required files:
  
• META-INF / com / google / android / update-binary - the system tool for launching this patch, also creates a temporary working folder tmp
  
• META-INF / com / google / android / updater-script - executable script for which copy operations take place, etc.

Let's analyze sample.zip
The patch adds a custom application MyPiano to Data.

Code :

- Displays the title and a blank line.
- (Mounts data) provides access to work with the system partition.
- Copy the folder content data to the appropriate location on the device.
- Set the owner, and group permissions on the contents of a folder apparatus (information for the code below)
- Dismounting the data.
- Displays a completion message.

• busybox- command line application, installed with custom recovery, located in ramdisk / sbin. in custom firmware it is often added to system / xbin

Possible corrections for their own purposes.

1. Change of rights
   
   set_perm_recursive (1000, 1000, 0771, 0644, "/ data / app /");
   
   can be replaced by:
   
   set_perm (1000, 1000, 0644, "/data/app/mypiano.apk");
   - In this case, only the right change for added applications
   
2. Add system application
   but. The root folder data changes to system
   b. The code updater-script is the same
   at. Rights are assigned through set_perm only add applications for system code 0675 (information on codes below)
   
3. Deleting an application / file
   A line like this is added to the code:
   
   delete ("/ system / app / OldApk.apk");
   
   Provided that busybox is in a different place, possible replacement
   
   run_program ("/ sbin / busybox", "mount", "/ data");
   - on -
   run_program ("/ system / xbin / busybox", "mount", "/ data");
   
   or
   
   mount ( "ext4", "EMMC", "/ dev / block / mmcblk0p5", "/ data");
   - In this case, specify the location of the block of your desired section

The rules of good form in writing any code is the use of TABs (indents at the beginning of a line).

пїЅ package_extract_dir
Syntax : package_extract_dir ("<src-dir>", "<dst-dir>");
Copy content<src-dir>at<dst-dir>. Files in<dst-dir>available in<src-dir>overwritten.
Example : package_extract_dir ("system", "/ system"); Copies files from the update.zip/system folder to / system

пїЅ package_extract_file
Syntax : package_extract_file ("<src-file>", "<dst-file>");
Copy file<src-file>at<dst-file>. If file<dst-file>exists, it is overwritten.
Example : package_extract_file ("test.sh", "/tmp/test.sh"); Copies the test.sh file from update.zip to /tmp/test.sh

пїЅ format
Syntax : format ("MTD", "<root>");
Format the partition<root>(see Attachment).
Example : format ("MTD", "system"); Fully formatted / system. Note: formatting deletes data irreversibly.
Example 2 : format ("ext4", "EMMC", "/ dev / block / mtdblock5", "0", "/ system");
Determining the number of the block under the spoiler "info and materials."

пїЅ delete
Syntax : delete ("<file1>"[" file2 ", ..." fileN "]);
Deletes file (s)
Example : delete ("/ system / app / Calculator.apk"); Delete Calculator.apk from the system / app folder.

пїЅ delete_recursive
Syntax : delete_recursive ("<dir1>"[" dir2 ", ..." dirN "]);
Recursively deletes the folder (s) with all its contents.
Example : delete_recursive ("/ data / dalvik-cache"); Delete the folder / data / dalvik-cache with all its contents.

пїЅ run_program
Syntax : run_program ("<filetorun>"[, "<opt1>", "<opt2>", "<opt3>"]);
Runs the program (script)<filetorun>.
Example : run_program ("/ tmp / install_busybox.sh"); Run the script /tmp/install_busybox.sh.

пїЅ set_perm
Syntax : set_perm (<uid>, <gid>, <mode>, "<pathtofile>"[ ..." pathtofileN "]);
Sets the owner, group and permissions for a file or folder as �chmod’, �chown’, and �chgrp’ all in one
Example : set_perm (0, 2000, 0550, "/system/etc/init.goldfish.sh"); Set owner, group and permissions for the file /system/etc/init.goldfish.sh

пїЅ set_perm_recursive
Syntax : set_perm_recursive (<uid>, <gid>, <dir-mode>, <file-mode>, "<path>"[, ... "<pathN>"])
Recursively sets the owner, group and permissions for the contents of the folder.<dir-mode>- for folders,<file-mode>- for files.
Example : set_perm_recursive (0, 0, 0755, 0644, "/ system / app"); Set permissions for the contents of / system / app, for folders - 0755, for files - 0644.

пїЅ show_progress
Syntax : show_progress (<fraction>, <duration>);
Promotion progress bar to share<fraction>behind<duration>seconds<duration>may be null for advancing it by the set_progress command, and not by time.
Example : show_progress (0.100000, 1); Increases progress by 0.1 in 1 second.

пїЅ set_progress
Syntax : set_progress (<fraction>);
Sets the position of the progress bar to the beat.<fraction>, for the most recent invocation of the show_progress command.
Example : set_progress (0.500000);

пїЅ symlink
Syntax : symlink ("<link target>", "<link-path1 "["<link-path2>", "<link-path3>"]);
Creates a symbolic link (like �ln-s’).<link-path>written in root format: path, and<link target>in the format of the target file system (and can be relative).Wikipedia Symlink.
Example : symlink ("/ data / app_s", "/ system / app"); Creates a symbolic link to the / data / app_s folder for the / system / app folder

пїЅ mount
Syntax : mount ("<kind>", "<what>", "<path>");
Mounts<what>let's hit the road<path>. <what>there should be a section name if<kind>this is "MTD", or a block of memory if<kind>this is "vfat"
Example : mount ("MTD", "userdata", "/ data");

пїЅ unmount
Syntax : unmount ("<path>");
Disables<path>.
Example : unmount ("/ data");

пїЅ ui_print
Syntax : ui_print ("<message>");
Displays a message<message>
Example : ui_print ("Formatting SYSTEM ...");

пїЅ sleep
Syntax : sleep (<time>);
Pause process on<time>seconds
Example : sleep (5); - pause 5 seconds, after which the script code is executed further.

пїЅ wipe data - Read more

Several useful commands to check the version of Android before installing the update
Information on launching shell scripts using updater-script+ moreoption

пїЅ set_metadata / set_metadata_recursive
Syntax : set_metadata (?????);
Sets owner, group and permissions (new command instead of set_perm for andriod 4.4. *)
Examples : Android update-script (Post # 32151495)
Creating a patch update.zip for firmware through recovery (Post kory-vadim # 81945464)

пїЅ set_metadata / set_metadata_recursive
Syntax :
set_metadata ("file name", "key1", "value1", "key2", "value2", ...)
set_metadata_recursive ("directory name", "key1", "value1", "key2", "value2", ...)
Keys:
* uid
* gid
* mode (set_perm_extd only)
* fmode (set_perm_extd_recursive only)
* dmode (set_perm_extd_recursive only)
* selabel
* capabilities
the first three (uid, gid, mode) are the same as in chmod, filled with "uid", 0, "gid", 1000, "mode", 06754.
To install the firmware, there are three keys "uid", 0, "gid", 1000, "mode", 06754.
Example : set_metadata ("/ system / xbin / shelld", "uid", 0, "gid", 1000, "mode", 06754, "capabilities", 0x0, "selabel", "u: object_r: system_file: s0") ;
set_metadata_recursive ("/ system / xbin", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0755, "capabilities", "0x0", "selabel", "u: object_r: system_file: s0 ");

пїЅ commands for Nexus
block_image_update ("/ dev / block / platform / msm_sdcc.1 / by-name / system", package_extract_file ("system.transfer.list"), "system.new.dat", "system.patch.dat");
Syntax : block_image_update ("Path to section block", package_extract_file ("list of information for a patch (?)"), "image", "patch of an image");
I understand that this is how a highly compressed firmware is flashed (the image of the system).
More ifelse
Example: ifelse (is_mounted ("/ system"), unmount ("/ system")); - if a partition is mounted, a command is given to unmount it, if unmounting something, nothing happens.

пїЅ Information on set_metadata attributes and similar commands on Android 4.4+
Android update-script (Post blackeangel # 50803606)
Description of where the "u: object_r: uncrypt_exec: s0" and similar attributes come from. . .

пїЅ An example of a script that can delete \ move \ backup files and log actions
Android Script Creator (Post Octanium # 51085030)

пїЅ Temporary Busybox

пїЅ Reboot Commands

пїЅ run_program

пїЅ show_progress / set_progress

пїЅ sleep

пїЅ package_extract_dir

пїЅ package_extract_file

пїЅ format

пїЅ delete

пїЅ delete_recursive

пїЅ set_perm

пїЅ set_perm_recursive

пїЅ symlink

пїЅ mount

пїЅ unmount

пїЅ ui_print

Information on Android updater-script from skOt (old topic):

• Android updater-script (Post # 5936887)
  
• Android updater-script (Post # 25586798)
  
• Modification of software and decorations for the Huawei U8186 Ascend Y101
  
• Bash script as update-binary for zip update
  
• Samsung GT-S5830 Galaxy Ace - Creating Custom Recovery
  
• UMI X2 Owners Club
  
• Owners Club Samsung Galaxy Ace 2
  
• LG Optimus One - CyanogenMod 7 Firmware (OS 2.3.7) - Archive
  
• Samsung GT-I9000 Galaxy S - Catalog and review of firmware / mods

If you have noticed errors in the description or there are materials to supplement the article - please report it in the topic or through QMS

I would also like to supplement this manual with other examples and features of patches. In particular, illustrative examples of command execution ** _ progress and symlink.
I will try to do this as you create patches. And if you have the standing materials - also lay out)

In addition to the sample.zip patch, I would like to add a number of other "standard" patches.