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Undocumented APIs for iPhone - Detection and Use

There are several iPhone apps that do some backstage tricks with undocumented APIs, with effective results.

  • How can I get a list of undocumented iPhone APIs?

  • Is there any third-party documentation for some of these APIs?

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Erica Sadun , one of the most respected iPhone hackers, has a book on that. Most undocumented header files can also be pulled from your website.

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You can use classdump to get a list of iPhone SDKs, but I don't know about the (non) existence of third party documentation. You could probably get an idea of ​​what methods do by reading their names.

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I found a perl script (source = arstechnika ) that builds a header folder from the public and private structure of the iPhone SDK. However, I get an error (dump class failure returning 16777215) if I run it.

#!/usr/bin/perl # # 24 November 2008 # Framework Dumping utility; requires class-dump # use strict; use Cwd; use File::Path; my $HOME = (getpwuid($<))[7] || $ENV{'HOME'} or die "Could not find your home directory!"; # This command must be in your path. # http://www.codethecode.com/projects/class-dump/ my $CLASS_DUMP = 'class-dump'; # Public Frameworks dump_frameworks('/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks', 'Frameworks'); # Private Frameworks dump_frameworks('/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks', 'PrivateFrameworks'); sub dump_frameworks { my($dir, $subdir) = @_; opendir(my $dirh, $dir) or die "Could not opendir($dir) - $!"; # Iterate through each framework found in the directory foreach my $file (grep { /\.framework$/ } readdir($dirh)) { # Extract the framework name (my $fname = $file) =~ s/\.framework$//; print "Framework: $fname\n"; my $headers_dir = "$HOME/Headers/$subdir/$fname"; # Create the folder to store the headers mkpath($headers_dir); # Perform the class-dump my $cwd = cwd(); chdir($headers_dir) or die "Could not chdir($headers_dir) - $!"; system($CLASS_DUMP, '-H', "$dir/$file"); if(my $ret = $? >> 8) { die "$CLASS_DUMP failed, returning $ret\n"; } chdir($cwd) or die "Could not chdir($cwd) - $!"; } }
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