Difference between revisions of "Xcode"

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(Automatically installing apps on your device wirelessly when they are built in Xcode: tiny copyedit)
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# Copy it over.
 
# Copy it over.
 
scp -r $BUILT_PRODUCTS_DIR/${WRAPPER_NAME} root@$IP:/Applications/
 
scp -r $BUILT_PRODUCTS_DIR/${WRAPPER_NAME} root@$IP:/Applications/
ssh root@$IP "uicache; killall backboardd"
+
ssh root@$IP "su -c uicache mobile; killall backboardd"
  
 
# This part just creates create an OS X notification to let you know that the process is done.
 
# This part just creates create an OS X notification to let you know that the process is done.

Revision as of 22:28, 9 March 2014

Xcode is the IDE endorsed by Apple for iOS development. The latest stable version is 5.0. It comes with the official iOS SDK.

For notes about using Logos and Theos with Xcode, see Xcode Logos.

Developing without Provisioning Profile

To develop for the device, one should first obtain a provisioning profile by joining the iPhone Developer Program (which costs $99). However, some simple tricks can be used to make Xcode compile and debug on jailbroken devices without provisioning profiles.

Update: As of March 2014, the following instructions are outdated. See Building and Running iOS Applications Without A Paid Developer License for a newer guide. Make sure to set ENTITLEMENTS_REQUIRED to NO and AD_HOC_CODE_SIGNING_ALLOWED to YES in your SDKSettings.plist.

The script at Automatically installing apps on your device wirelessly when they are built in Xcode isn't outdated though.

Old instructions

These steps are designed for the most recent version of Xcode and iOS SDK, but should also work for versions after Xcode 3.2/iPhone SDK 3.x. If for some reason you are stuck with Xcode 3.1.x, try [1].

Compiling

Performing these steps allows you to use Xcode to compile any applications and deploy it yourself.

  • 1. Create a self-signed code-signing certificate with the name “iPhone Developer” on the “login” (default) keychain using Keychain Access[1].
  • 2. Open /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Info.plist (4.2 or below: /Developer/Platforms/iPhoneOS.platform/Info.plist). You may need root permission.
  • 3. Replace all occurrences of XCiPhoneOSCodeSignContext by XCCodeSignContext. There are three of them (XCode Version 3.2.4+).
  • 4. Save the file and restart Xcode.

or Issue the following commands in terminal:

#!/bin/bash
InfoPlist=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Info.plist
cp $InfoPlist .
cp Info.plist Info.plist.original
plutil -convert xml1 Info.plist.original
sed -e "s/XCiPhoneOSCodeSignContext/XCCodeSignContext/g" Info.plist.original > Info.plist
plutil -convert binary1 Info.plist
sudo cp Info.plist InfoPlist

If you upgrade the iOS SDK, you need to perform steps 2 – 4 again.

Replacing codesign with ldid

These steps are necessary for debugging, since the entitlement can no longer be inserted by performing steps 1 – 4. To actually debug your app, make sure you have add -gta to Other Code Signing Flags of your target.

  • 5. Make sure you have ldid on your Mac[2]. Place a copy somewhere e.g. in /usr/local/bin.
  • 6. Create the a Python script ldid3.py right next to the ldid program. Make it executable. Fill it with:
#!/usr/bin/env python

from sys import argv
from subprocess import check_call
from os.path import basename, dirname, splitext, join
from tempfile import NamedTemporaryFile

app = argv[-1]
ldid_path = join(dirname(__file__), 'ldid')
obj_path = join(app, splitext(basename(app))[0])

if '-gta' not in argv:
    check_call([ldid_path, '-S', obj_path])
else:
    with NamedTemporaryFile('w+b', 0) as f:
        f.write("""
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>get-task-allow</key>
    <true/>
  </dict>
</plist>
        """)
        check_call([ldid_path, '-S' + f.name, obj_path])
  • 7. Open iPhoneCodeSign.xcspec. This file can be found in:
Xcode version Path
4.5 - 4.6 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Specifications/iPhoneCodeSign.xcspec
4.3 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/PrivatePlugIns/iPhoneOS Build System Support.xcplugin/Contents/Resources/iPhoneCodeSign.xcspec
4.2 /Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/PrivatePlugIns/iPhoneOS Build System Support.xcplugin/Contents/Resources/iPhoneCodeSign.xcspec
Before 4.2 /Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Plug-ins/iPhoneOS Build System Support.xcplugin/Contents/Resources/iPhoneCodeSign.xcspec
  • 8. Change the entry in the file from calling codesign to ldid3.py. Specifically:
    • Convert the file to a human editable format (esp. in Xcode 4.6 or above). You may skip this if the file is already in plain-text or XML format.
      sudo plutil -convert xml1 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Specifications/iPhoneCodeSign.xcspec
      
    • Replace the entry (which should be near the beginning of the file)
      <key>CommandLine</key><string>/usr/bin/codesign</string>
      
      with
      <key>CommandLine</key><string>/usr/local/bin/ldid3.py</string>
      

or

#! /bin/bash
xcspec=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Specifications/iPhoneCodeSign.xcspec
cp $xcspec .
cp iPhoneCodeSign.xcspec iPhoneCodeSign.xcspec.original
sed -e "s|/usr/bin/codesign|/usr/local/bin/ldid3.py|g" iPhoneCodeSign.xcspec.original > iPhoneCodeSign.xcspec 
sudo cp iPhoneCodeSign.xcspec $xcspec
  • 9. Save the file and restart Xcode.

If you upgrade the iOS SDK, you need to perform steps 8 – 9 again.

Allowing apps with invalid signatures to be installed

These steps allow you to install an unsigned app to the device. This method only works for iOS 4.0 or above.

  • 10. Create a file /var/mobile/tdmtanf on the device, to enable Apple's "TDMTANF bypass" in installd (warning: doing so will also put you in a sandboxed GameCenter[3]).

If you upgrade the firmware, you need to do step 10 again.

Automatically installing apps on your device wirelessly when they are built in Xcode

This is a simple Bash script that installs your app on your jailbroken iOS device whenever you build for iOS Device in Xcode. To set it up, go to Build Phases in your project settings and choose Editor > Add Build Phase > Add Run Script Build Phase in the menu bar. Set your shell to /bin/sh and paste this script in.

Make sure that you are able to SSH in as root without a password - set up SSH keypairs if you haven't already! Also establish that ldid is installed and in your $PATH.

#!/bin/sh

# Modify this to your device's IP address.
IP="192.168.1.109"

# Verify that the build is for iOS Device and not a Simulator.
if [ "$NATIVE_ARCH" != "i386" ]; then
# Kill any running instances and remove the app folder.
ssh root@$IP "killall ${TARGETNAME}; rm -rf /Applications/${WRAPPER_NAME}"
# Self sign the build.
ldid -S $BUILT_PRODUCTS_DIR/${WRAPPER_NAME}/$TARGETNAME
# Copy it over.
scp -r $BUILT_PRODUCTS_DIR/${WRAPPER_NAME} root@$IP:/Applications/
ssh root@$IP "su -c uicache mobile; killall backboardd"

# This part just creates create an OS X notification to let you know that the process is done.
# You can get terminal-notifier from https://github.com/alloy/terminal-notifier.
# You can remove this line if you want.
/Applications/terminal-notifier.app/Contents/MacOS/terminal-notifier -title "Build Complete" -message "${WRAPPER_NAME} installed on ${IP}"
fi

References