Beta 9

What's New

• Agent functionality
  • Requires running Recaf via JDK
  • Attach to other java processes and update bytecode in-memory
    • Done via running recaf and selecting from the navbar injection->jvm's and selecting which one you want to attach to.
  • Make edits, mark classes as modified and apply the changes at any time
• Decompiled classes and methods can be recompiled via a right-click context menu option recompile.
  • Requires running Recaf via JDK
• User interface customization
  • UI text can now be translated
    • Located in src/resources/lang
    • Language option in UI is options->user interface, requires restart to apply changes in GUI.
    • Currently translation is the user's responsibility but I would really appreciate a pull-request with some other languages
  • Uncommonly edited attributes in the class inner-window can be hidden (EnclosingMethod, InnerClasses, SourceDebug)
  • Member & Opcode right-click context menu's now customizable
    • User can define the order of items and even hide items from showing up (hiding requires removal via setting in rcinterface.json, but order is editable in UI via options->user interface)
      processes that already have a potentially outdated ASM library loaded
• Logging now written to rclog.txt in addition to console
  • Separate logging levels for console output vs log file output (Defaults -> console:info, file:fine)
• Plugins
  • New events
    • Opening class display
    • Opening Method opcode list display
    • Context-menu creation
    • File loading / saving
• Opcode block saving now supports switch opcodes
• Class file input support (As opposed to originally only jar support)
• Proper editing support for InvokeDynamic instructions
• Search results now fetchable
  • Useful for writing plugins when you want to look something up, now you don't need to implement the searching yourself.
• ASM version used for saving/loading configurable via options->ASM flags
  • Useful for agent-mode when attaching to java processes with an older version of ASM already loaded into the classpath.
• Deletion warning option now warns when recaf window closed (allows user to cancel shutdown)

What's Fixed

• Types not being properly shortened when simplify option enabled
  • Also this led to a crash if a class name was one-char long
• Desync between actual method instructions and what's shown in the list display
• Search's case insensitive option not lowering case of input text
• Better plugin load handling
  • Fix: One bad plugin canceling load of other plugins
  • Fix: Not all plugin classes being loaded properly resulting in ClassNotFoundExceptions when loading correctly designed plugins

Beta 8

What's New

• WIP plugin API implemented
• Tile windows by right clicking the tab background and selecting "Tile windows"
• Class window shows more editable fields
• UI config new name is rcinterface.json. Old name is rcoptions.json. Renamed due to name not making sense since there are now multiple config files.
• Members
  • Add try-catches to methods if none were there already
  • Method code can be run through a verifyer
  • Method variables can now be accessed via the member context menu
  • Inserting new methods and fields
• Opcodes
  • Ability to move selected opcode(s) up or down in method code
  • Support for inserting labels in method code
  • Type of LDC content can be specified when inserting the opcode
  • Opcode blocks
    • Select and save opcodes, insert them anywhere
• Search
  • Ability to specify regex in string searches
  • Ability to specify exact match for all search types (As opposed to checking for value containment)
  • Ability to search for constant numeric values in fields and method code
  • Hitting enter/return in a text box now executes the search

What's Fixed

• Functionality
  • Editing LDC content retains the initial type
  • Wrong stack-frames auto-generated by ASM
  • NPE related to auto-generating stack frames.
  • Editing a field's default value no longer sets the value to a string type
  • Removing large groups of opcodes is much much faster now
• UI / consistency
  • Aligned more text-boxes to grid layout
  • Fixed items appearing in non-alphabetical order in multiple components
  • Decompilation opened exception tags despite decompilation being a success
  • Array types not showing up properly in some opcodes
  • Try-Catch editing window being too small
  • Right clicking opcodes now selects whatever the mouse is over if there is no current selection

Beta 7

What's New

• Look and feel can be set from the options menu
  • Persists in "rcoptions.json". If you want a theme that does not appear, edit the json and add your LAF to the classpath. It will be applied on launch.
• A file can be loaded at launch via command line java -jar recaf.jar MyJarFile.jar
• The color scheme of the opcode and member lists can be updated in "rcstyle.json"
• Searching references to members can be done by right clicking them and clicking "Find references"

What's Changed

• Clicking opcode results in the search menu opens the method's opcodes and selects the specific index
  • Before, would only open the containing class.
• Member attributes moved from separate windows into definition window. This is found by selecting "Edit definition" from the right-click context menu.
• Search result trees are expanded by default
• Gui labels / inputs align to a grid

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Note: If releases are not up to date, you can download or clone the repository and run mvn compile package to generate the very latest build.

Beta 6

What's New

• Decompilation for:
  • Entire classes
  • Single methods

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Small update, but an internal decompiler is really handy. It will allow quickly checking for valid bytecode edits (As opposed to exporting, running an external decompiler, re-exporting after fixing, etc.). Not to worry, I will add a fully fledged verifier in the future.

Beta 5

What's New

• Input can be dragged and dropped into recaf (The file tree on the left accepts the input)
• Exceptions can be added
• Try-Catch block ranges can be edited
  • New try-catch blocks can be inserted
• Jump labels can be changed
• Switch labels can be changed
• Member definitions can be modified
  • Name
  • Descriptor
  • Signature (Generic type)
• Local variables can be modified from the variable opcode editor window
  • Name
  • Descriptor
  • Signature (Generic type)
• Labels no longer show as just (F_NEW), now include an arbitrary name
  • Selecting labels shows where they are referenced

What's Changed

• Line opcodes rendered as light grey instead of green.
• Class data window shows more attributes

What's Fixed

• Removed duplicate input on try-catch window
• Removed typos in documentation.
• Try-Catch window no longer named "Exceptions"

Beta 4

What's New

• Settings are now persistent
• MultiANewArray opcodes can now be edited
• Method exceptions can be edited & removed
• Try-catch blocks can be edited (limited) & removed
  • Only the exception type can be edited for now.

What's Fixed

• The latter half of the docs are no longer accidentally italicized.
• Deleting opcodes now prompts the user if they're sure (Unless the option is disabled in the options)
• Access panel's initial values now correctly reflect the values they represent
• Access panel's output flags no longer change the input's values (Whoops)

Beta 3

What's New

• Usage documentation on github pages.
• ASM input/output options are now accessible via the gui.
• You can now shift-click / control-click to select multiple opcodes. Used so you can delete multiple things at once.
• Middle clicking an opcode now opens the edit window
• New search feature
  • Search for strings (Optional case-sensitivity)
  • Search for fields and methods (Input should be exact)
  • Search for classes by name: (Optional, exact vs containment)
  • Search for references (Optional inputs: Class owner, member name, member description)

What's Fixed

• Tree displays opening content now check if the mouse is in the selection bounds. This prevents mis-clicks from opening files.
• Tree displays now properly open files on double-click (left mouse button)

Beta 2

What's New

• You can now add your own opcodes by right clicking one, and selecting Insert new before... or Insert new after...
• Added support for editing existing InvokeDynamic instructions

What's Fixed

• No more IndexOutOfBounds for displaying a method's variable table if it was lacking debugging info.
• Icons and member lines are now the same height

Beta 1

Just a release so a pre-compiled build is available.