在OSX / cocoa应用程序中以编程方式在Objective C中读取崩溃日志

Question

I want to be able to read a crash log and send it to my server. I've seen libraries that do this, and I'm actually basing my code on them -- except many of them seem out of date, which is why I believe I'm currently having a problem with OSX sandboxing.

There seem to be 2 parts to any generated crash log. In /Users/zane/Library/Containers/**[BUNDLE_ID]**/Data/Library/Application Support/CrashReporter there is a .plist with not much information. One thing it does contain, though, is a Path to ~/Library/Logs/DiagnosticReports/**FULL_CRASH_FILE**.crash

However, when I try to open this full path via [NSString stringWithContentsOfFile...] I get a read access error: Error Domain=NSCocoaErrorDomain Code=257 "The file “Aftermath_2014-02-12-210934_inZania.crash” couldn't be opened because you don't have permission to view it." UserInfo=0x600000264700 {NSFilePath=/Users/zane/Library/Logs/DiagnosticReports/Aftermath_2014-02-12-210934_inZania.crash, NSUnderlyingError=0x600000246900 "The operation couldn't be completed. Operation not permitted"} Error Domain=NSCocoaErrorDomain Code=257 "The file “Aftermath_2014-02-12-210934_inZania.crash” couldn't be opened because you don't have permission to view it." UserInfo=0x600000264700 {NSFilePath=/Users/zane/Library/Logs/DiagnosticReports/Aftermath_2014-02-12-210934_inZania.crash, NSUnderlyingError=0x600000246900 "The operation couldn't be completed. Operation not permitted"}

I take it that this is a problem with entitlements/sandboxing. Is there any way I can gain access to this file, or otherwise get a full stack trace to send to my crash reporter?

Answer 1

You can check the permissions of the log file!! It may need root permissions to access!