Regex to exclude a literal substring

I am trying to match a set of strings using a regular expression, but I also want to exclude several literals.
For example, I want to match all strings starting with root_obj.item_type., except those that end in the literal string emitter.
To match is simple enough ... the pattern I would use would be "root_obj\\.item_type\\..*". However, this would match strings ending with "emitter". I have tried a negative zero width lookahead (though I am uncertain exactly what that means), "root_obj\\.item_type\\..*(?!emitter)", but this still matches the strings I am attempting to exclude.
I have looked on the web, but have not found an answer to this. Any suggestions?
� {�

jverd wrote:
sharkura wrote:
I guess you are saying only match strings that have exactly zero instances of emitter at the end of the string.
I also thought of
str.matches( "root_obj\\.item_type\\..*[^e][^m][^m][^i][^t][^t][^e][^r]" ); but I didn't even test it because it looks so ugly.It's also incorrect.
You're saying after item_type.*, it has to have exactly 8 characters, and the first can't be e, and the second and third can't be m, fourth can't be i, etc.Ah, so, desu ka.
I tried cotton's first solution, and it still matches the strings to reject. I am going to go beat my head against a book or a google until I figure this out. Thanks for the help, peoples.
� {�

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08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,000 kernel[0]: Sandbox: xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,914 sandboxd[89]: ([89837]) xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,934 sandboxd[89]: ([89837]) xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,954 sandboxd[89]: ([89837]) xscertd(89837) deny file-read-metadata /private
08/03/2014 09:49:38,975 sandboxd[89]: ([89837]) xscertd(89837) deny file-read-metadata /private
I'm not sure what's going on there.
Anyone have a clue?

I have the exact same issue on a newly rebuilt OS X Server. I can't imagine going through all that pain again to reinstall the OS and rebuild OS X Server. Are there other options?
I have Profile Manager running, but switching it off doesn't stop the entries. I also have local accounts on an external drive.
Log entries:
4/28/14 9:23:25.000 PM kernel[0]: Sandbox: xscertd(675) deny file-read-metadata /private
4/28/14 9:23:25.000 PM kernel[0]: Sandbox: xscertd(675) deny file-read-metadata /private
4/28/14 9:23:25.000 PM kernel[0]: Sandbox: xscertd(675) deny file-read-metadata /private
4/28/14 9:23:45.183 PM servermgrd[95909]: could not convert interface name
4/28/14 9:23:59.000 PM kernel[0]: Sandbox: xscertd(675) deny file-read-metadata /Volumes
4/28/14 9:23:59.000 PM kernel[0]: Sandbox: xscertd(675) deny file-read-metadata /Volumes
4/28/14 9:23:59.000 PM kernel[0]: Sandbox: xscertd(675) deny file-read-metadata /Volumes
Here are the two certs files:
; Copyright (c) 2010 Apple Inc. All rights reserved.
; xscertd-helper sandbox profile
(version 1)
(deny default)
(import "system.sb")
(allow distributed-notification-post)
(allow file-read*
       (regex #"^/Library/Keychains/.")
       (literal "/Library/Keychains/System.keychain")
       (literal "/Library/Preferences/com.apple.security.plist")
       (literal "/private/etc/openldap/ldap.conf")
       (regex #"^/private/var/db/mds/")
       (regex #"^/private/var/root/Library/Application Support/Certificate Authority/")
       (regex #"^.*/Library/Preferences/(ByHost/)?\.GlobalPreferences.*\.plist$")
       (literal "/private/var/root/Library/Preferences/com.apple.security.plist")
       (literal "/usr/libexec")
       (literal "/usr/libexec/xscertd")
       (literal "/usr/libexec/xscertd-helper"))
(allow file-read-metadata
       (literal "/")
       (literal "/Library")
       (literal "/Library/Keychains")
       (regex #"^/Library/Keychains/System.keychain.")
       (literal "/Library/Keychains/apsd.keychain")
       (literal "/private")
       (literal "/private/var")
       (literal "/private/var/db")
       (literal "/private/var/db/mds")
       (literal "/private/var/db/mds/system")
       (literal "/private/var/root")
       (literal "/private/var/folders")
       (regex #"^/private/var/folders/")
       (literal "/private/var/run/systemkeychaincheck.done"))
(allow file-write*
       (literal "/Library/Keychains/System.keychain")
       (regex #"^/Library/Keychains/System.keychain.")
       (literal "/private/var/log/xscertd.log"))
(allow file-write-data
       (literal "/private/var/db/mds/system/mds.lock"))
(allow ipc-posix-shm
       (ipc-posix-name "apple.shm.notification_center")
       (ipc-posix-name "com.apple.AppleDatabaseChanged"))
(allow mach-lookup
       (global-name "com.apple.SecurityServer")
       (global-name "com.apple.distributed_notifications@1v3"))
(allow network-outbound
       (literal "/private/var/run/ldapi")
       (literal "/private/var/run/mDNSResponder"))
/usr/share/sandbox/com.apple.xscertd-helper.sb (END)
; Copyright (c) 2010 Apple Inc. All rights reserved.
; xscertd sandbox profile
(version 1)
(deny default)
(import "system.sb")
(deny job-creation
        (with no-log))
(allow distributed-notification-post)
(allow file-read*
       (regex #"^.*/Library/Preferences/(ByHost/)?\.GlobalPreferences.*\.plist$")
       (regex #"^/private/var/db/mds/")
       (literal "/private/var/db/DetachedSignatures")
       (literal "/usr/libexec")
       (literal "/usr/libexec/xscertd"))
(allow file-read-metadata
       (literal "/")
       (literal "/Library")
       (literal "/Library/Keychains")
       (literal "/Library/Keychains/System.keychain")
       (literal "/private/var/db/DetachedSignatures")
       (literal "/private/var/empty")
       (literal "/private/var/run/systemkeychaincheck.done"))
(allow file-write*
       (literal "/private/var/log/xscertd.log"))
(allow mach-lookup
       (global-name "com.apple.CoreServices.coreservicesd")
       (global-name "com.apple.SystemConfiguration.SCNetworkReachability")
       (global-name "com.apple.distributed_notifications@1v3")
       (global-name "com.apple.xscertd.helper"))
/usr/share/sandbox/com.apple.xscertd.sb (END)

Regex to exclude a literal substring

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