*** Run app on iDevice using com.apple.debugserver ***

This simple utility will start iOS app (using com.apple.debugserver)
and tail its output.

Interrupting idevice-app-runner process (ctrl-c) stops app on iDevice
too.

Requirements:

    * libimobiledevice - http://www.libimobiledevice.org/
    * iDevice(s) (maybe in developer mode)

Build:

    $ make

Usage:

    $ idevice-app-runner -r /private/var/mobile/Applications/........-....-....-....-............/...

I cooked up something mostly by tracing APIs and syscalls used in
Xcode and fruitscrap.

To get app path, for example:

    $ APPNAME=something APPPATH=`ideviceinstaller -l -o xml | egrep -A1 '<key>Path</key>|<key>CFBundleName</key>' | tr -d $'\n' | sed 's/--/\n/g' | egrep -A1 'CFBundleName.*'$APPNAME | tail -1 | tr '<>' '  ' | awk '{print $5}'`

or

    $ ideviceinstaller -l -o xml | grep -A1 '<key>Path</key>' | grep '<string>' | tr '<>' '  ' | awk '{ print $2 }' | grep $APPNAME

Tested:

    Linux 3.0, x86_64, libimobiledevice-git, iOS 4.1 - works
    Linux 3.0, x86_64, libimobiledevice-git, iOS 5.0.1 - works
    Linux 3.0, i686, libimobiledevice-git, iOS 5.0.1 - works

Notes:

    Sometimes debugger process or application being run is left
hanging, it's not killed properly. When that happens it's impossible
to run application again.  Workaround for this issue is to restore
device with --reboot option,

       $ idevicebackup2 restore --reboot bakdir...

Wait for device to come back online by monitoring with ideviceinfo. It
will take a few minutes. When reboot is completed, developer image
should be mounted,

       $ idevicemountimage .../{DeveloperDiskImage.dmg,DeveloperDiskImage.dmg.signature}

so idevice-app-runner can be used again.

References:

    https://github.com/ghughes/fruitstrap - very helpful

Contact:

    predrg@gmail.com

DTRUSS COMMANDS:

With tweak in fruitscrap.c:

#define GDB_SHELL "sudo dtruss /Developer/Platforms/iPhoneOS.platform/Developer/usr/libexec/gdb/gdb-arm-apple-darwin --arch armv7 -q -x " PREP_CMDS_PATH " 2> dtruss2.log"

For example:

$ egrep 'write\(0x5,|read\(0x5,' dtruss2.log

GDB COMMANDS:

$ gdb .../Xcode nnnnn

set print elements 10000

b mobdevlog
command
silent
printf "mobdevlog: %s\n", $rsi
cont
end

b USBMuxDebugLog
command
silent
printf "USBMuxDebugLog: %s %s\n", $rsi, $rdi
cont
end

b send
command
printf "fd=%ld, size=%ld\n", $rdi, $rdx
x/s $rsi
bt 3
cont
end

b SSL_write
command
p/d $rdx
x/s $rsi
cont
end

#b write
b *0x0000000100fd3268
command
printf "fd=%ld, size=%ld\n", $rdi, $rdx
x/s $rsi
bt 3
cont
end

#b recvfrom
b *0x10100494c
command
printf "fd=%ld, size=%ld\n", $rdi, $rdx
set variable $buf = $rsi
cont
end

#b <recvfrom+17>
b *0x10100494c+17
command
x/s $buf
cont
end

#b read
b *0x100fcb45c
command
printf "fd=%ld, size=%ld\n", $rdi, $rdx
set variable $buf2 = $rsi
cont
end

#b read+17
b *0x100fcb45c+17
command
x/s $buf2
cont
end


#b BIO_write
b *0x106aefaf8
command
printf "fd=%ld, size=%ld\n", $rdi, $rdx
x/s $rsi
x/100c $rsi
bt 3
cont
end

b DTDKStartSecureDebugServerService