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• How to open a server port outside of an OpenVPN tunnel with a pf firewall on OSX (BSD)

  - by Timbo

  I have a Mac mini that I use as a media server running XBMC and serves media from my NAS to my stereo and TV (which has been color calibrated with a Spyder3Express, happy). The Mac runs OSX 10.8.2 and the internet connection is tunneled for general privacy over OpenVPN through Tunnelblick. I believe my anonymous VPN provider pushes "redirect_gateway" to OpenVPN/Tunnelblick because when on it effectively tunnels all non-LAN traffic in- and outbound. As an unwanted side effect that also opens the boxes server ports unprotected to the outside world and bypasses my firewall-router (Netgear SRX5308). I have run nmap from outside the LAN on the VPN IP and the server ports on the mini are clearly visible and connectable. The mini has the following ports open: ssh/22, ARD/5900 and 8080+9090 for the XBMC iOS client Constellation. I also have Synology NAS which apart from LAN file serving over AFP and WebDAV only serves up an OpenVPN/1194 and a PPTP/1732 server. When outside of the LAN I connect to this from my laptop over OpenVPN and over PPTP from my iPhone. I only want to connect through AFP/548 from the mini to the NAS. The border firewall (SRX5308) just works excellently, stable and with a very high throughput when streaming from various VOD services. My connection is a 100/10 with a close to theoretical max throughput. The ruleset is as follows Inbound: PPTP/1723 Allow always to 10.0.0.40 (NAS/VPN server) from a restricted IP range >corresponding to possible cell provider range OpenVPN/1194 Allow always to 10.0.0.40 (NAS/VPN server) from any Outbound: Default outbound policy: Allow Always OpenVPN/1194 TCP Allow always from 10.0.0.40 (NAS) to a.b.8.1-a.b.8.254 (VPN provider) OpenVPN/1194 UDP Allow always to 10.0.0.40 (NAS) to a.b.8.1-a.b.8.254 (VPN provider) Block always from NAS to any On the Mini I have disabled the OSX Application Level Firewall because it throws popups which don't remember my choices from one time to another and that's annoying on a media server. Instead I run Little Snitch which controls outgoing connections nicely on an application level. I have configured the excellent OSX builtin firewall pf (from BSD) as follows pf.conf (Apple App firewall tie-ins removed) (# replaced with % to avoid formatting errors) ### macro name for external interface. eth_if = "en0" vpn_if = "tap0" ### wifi_if = "en1" ### %usb_if = "en3" ext_if = $eth_if LAN="{10.0.0.0/24}" ### General housekeeping rules ### ### Drop all blocked packets silently set block-policy drop ### all incoming traffic on external interface is normalized and fragmented ### packets are reassembled. scrub in on $ext_if all fragment reassemble scrub in on $vpn_if all fragment reassemble scrub out all ### exercise antispoofing on the external interface, but add the local ### loopback interface as an exception, to prevent services utilizing the ### local loop from being blocked accidentally. ### set skip on lo0 antispoof for $ext_if inet antispoof for $vpn_if inet ### spoofing protection for all interfaces block in quick from urpf-failed ############################# block all ### Access to the mini server over ssh/22 and remote desktop/5900 from LAN/en0 only pass in on $eth_if proto tcp from $LAN to any port {22, 5900, 8080, 9090} ### Allow all udp and icmp also, necessary for Constellation. Could be tightened. pass on $eth_if proto {udp, icmp} from $LAN to any ### Allow AFP to 10.0.0.40 (NAS) pass out on $eth_if proto tcp from any to 10.0.0.40 port 548 ### Allow OpenVPN tunnel setup over unprotected link (en0) only to VPN provider IPs ### and port ranges pass on $eth_if proto tcp from any to a.b.8.0/24 port 1194:1201 ### OpenVPN Tunnel rules. All traffic allowed out, only in to ports 4100-4110 ### Outgoing pings ok pass in on $vpn_if proto {tcp, udp} from any to any port 4100:4110 pass out on $vpn_if proto {tcp, udp, icmp} from any to any So what are my goals and what does the above setup achieve? (until you tell me otherwise :) 1) Full LAN access to the above ports on the mini/media server (including through my own VPN server) 2) All internet traffic from the mini/media server is anonymized and tunneled over VPN 3) If OpenVPN/Tunnelblick on the mini drops the connection, nothing is leaked both because of pf and the router outgoing ruleset. It can't even do a DNS lookup through the router. So what do I have to hide with all this? Nothing much really, I just got carried away trying to stop port scans through the VPN tunnel :) In any case this setup works perfectly and it is very stable. The Problem at last! I want to run a minecraft server and I installed that on a separate user account on the mini server (user=mc) to keep things partitioned. I don't want this server accessible through the anonymized VPN tunnel because there are lots more port scans and hacking attempts through that than over my regular IP and I don't trust java in general. So I added the following pf rule on the mini: ### Allow Minecraft public through user mc pass in on $eth_if proto {tcp,udp} from any to any port 24983 user mc pass out on $eth_if proto {tcp, udp} from any to any user mc And these additions on the border firewall: Inbound: Allow always TCP/UDP from any to 10.0.0.40 (NAS) Outbound: Allow always TCP port 80 from 10.0.0.40 to any (needed for online account checkups) This works fine but only when the OpenVPN/Tunnelblick tunnel is down. When up no connection is possbile to the minecraft server from outside of LAN. inside LAN is always OK. Everything else functions as intended. I believe the redirect_gateway push is close to the root of the problem, but I want to keep that specific VPN provider because of the fantastic throughput, price and service. The Solution? How can I open up the minecraft server port outside of the tunnel so it's only available over en0 not the VPN tunnel? Should I a static route? But I don't know which IPs will be connecting...stumbles How secure would to estimate this setup to be and do you have other improvements to share? I've searched extensively in the last few days to no avail...If you've read this far I bet you know the answer :)

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• Cisco 2900 series router - 3x 3g HWIC - Can you use the same subnet for each HWIC?

  - by Lance

  We host a site with a 2900 series router with 3x 3G-HWIC cards installed. It is hosted with telstra and plugs into our corporate WAN. The card authenticates against radius and advertises a route into the WAN for which subnet it routes for. We have always used the same advertised subnet on each. Telstra have advised us that this could be the cause of some drop out issues whereby some services will work for some people and not for others and are saying effectively that their system will only use one of these at a time even though we can see the interface is online and assigned a WAN IP address. Has anyone out there configured a multi HWIC setup before and if so are they using different subnets for each or the same?

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• missing table in SQLite with specific version of HTC DESIRE HD

  - by William

  My application has a SQLite database in the asset folder. When the user launches my application, the database is created and the tables too. This works fine with a lot of devices (Nexus One, Htc Magic, SGS, X10… and even Htc Desire HD v2.2). My application works with all versions of Android (tested on my device (1.6, 2.2, 2.2.1 Htc Magic) and on the emulator (v1,5 until v2.3). I have just a problem with HTC DESIRE HD v2.2.1 1.72.405.3. The logcat: android.database.sqlite.SQLiteException: no such table: LISTE: , while compiling: select _id from LISTE at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2833) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2854) at android.app.ActivityThread.access$2300(ActivityThread.java:136) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2179) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:143) at android.app.ActivityThread.main(ActivityThread.java:5068) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) at dalvik.system.NativeStart.main(Native Method) Caused by: android.database.sqlite.SQLiteException: no such table: LISTE: , while compiling: select _id from LISTE at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91) at android.database.sqlite.SQLiteCompiledSql.(SQLiteCompiledSql.java:64) at android.database.sqlite.SQLiteProgram.(SQLiteProgram.java:80) at android.database.sqlite.SQLiteQuery.(SQLiteQuery.java:46) at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:53) at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1417) at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1387) ... 11 more My application create the database but it doesn’t copy the tables of the file of the asset folder in data\data\packagename\databases\mydatabase. My code: public void createDataBase() throws IOException{ boolean dbExist = checkDataBase(); if(dbExist){ //do nothing - database already exist }else{ //By calling this method and empty database will be created into the default system path //of your application so we are gonna be able to overwrite that database with our database. this.getReadableDatabase(); try { copyDataBase(); } catch (IOException e) { throw new Error("Error copying database"); } } } private void copyDataBase() throws IOException{ //Open your local db as the input stream InputStream myInput = myContext.getAssets().open(DB_NAME); // Path to the just created empty db String outFileName = DB_PATH + DB_NAME; //Open the empty db as the output stream OutputStream myOutput = new FileOutputStream(outFileName); //transfer bytes from the inputfile to the outputfile byte[] buffer = new byte[1024]; int length; while ((length = myInput.read(buffer))!= -1){ if (length > 0){ myOutput.write(buffer, 0, length); } } //Close the streams myOutput.flush(); myOutput.close(); myInput.close(); } I think that the copydatabase function has a problem but I don't see. This code works fine with all devices except the HTC DESIRE HD v2.2.1 1.72.405.3. What problems might exist here for the HTC Desire with the given version above? How can this be remedied?

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• outlook iptables configuration [update]

  - by mediaexpert

  I've a Debian mail server, but only the outlook users can't be able to download the emails. I've seen a lot of post about some kind of forwarding port configuration, I've tried some commands, but I don't be able to solve this problem, please help me. [LAST UPDATE] I find a lot of TIME WAIT on ipv6 netstat tcp6 0 0 my.mailserver.it:imap2 200-62-245-188.ip2:17060 TIME_WAIT - below some config files: pop3d I think the problem was here ##NAME: POP3AUTH:1 # # To advertise the SASL capability, per RFC 2449, uncomment the POP3AUTH # variable: # # POP3AUTH="LOGIN" # # If you have configured the CRAM-MD5, CRAM-SHA1 or CRAM-SHA256, set POP3AUTH # to something like this: # # POP3AUTH="LOGIN CRAM-MD5 CRAM-SHA1" POP3AUTH="" ##NAME: POP3AUTH_ORIG:1 # # For use by webadmin POP3AUTH_ORIG="PLAIN LOGIN CRAM-MD5 CRAM-SHA1 CRAM-SHA256" ##NAME: POP3AUTH_TLS:1 # # To also advertise SASL PLAIN if SSL is enabled, uncomment the # POP3AUTH_TLS environment variable: # # POP3AUTH_TLS="LOGIN PLAIN" POP3_TLS_REQUIRED = 0 POP3AUTH_TLS="" ##NAME: POP3AUTH_TLS_ORIG:0 # # For use by webadmin POP3AUTH_TLS_ORIG="LOGIN PLAIN" ##NAME: POP3_PROXY:0 # # Enable proxying. See README.proxy # # For use by webadmin POP3AUTH_TLS_ORIG="LOGIN PLAIN" ##NAME: POP3_PROXY:0 # # Enable proxying. See README.proxy POP3_PROXY=0 ##NAME: PROXY_HOSTNAME:0 # # Override value from gethostname() when checking if a proxy connection is # required. # PROXY_HOSTNAME= ##NAME: PORT:1 ##NAME: PROXY_HOSTNAME:0 # # Override value from gethostname() when checking if a proxy connection is # required. # PROXY_HOSTNAME= ##NAME: PORT:1 # # Port to listen on for connections. The default is port 110. # # Multiple port numbers can be separated by commas. When multiple port # numbers are used it is possibly to select a specific IP address for a # given port as "ip.port". For example, "127.0.0.1.900,192.68.0.1.900" # accepts connections on port 900 on IP addresses 127.0.0.1 and 192.68.0.1 # The ADDRESS setting is a default for ports that do not have a specified # IP address. # Port to listen on for connections. The default is port 110. # # Multiple port numbers can be separated by commas. When multiple port # numbers are used it is possibly to select a specific IP address for a # given port as "ip.port". For example, "127.0.0.1.900,192.68.0.1.900" # accepts connections on port 900 on IP addresses 127.0.0.1 and 192.68.0.1 # The ADDRESS setting is a default for ports that do not have a specified # IP address. PORT=110 ##NAME: ADDRESS:0 # # IP address to listen on. 0 means all IP addresses. ADDRESS=0 ##NAME: TCPDOPTS:0 # ##NAME: ADDRESS:0 # # IP address to listen on. 0 means all IP addresses. ADDRESS=0 ##NAME: TCPDOPTS:0 # # Other couriertcpd(1) options. The following defaults should be fine. # TCPDOPTS="-nodnslookup -noidentlookup" ##NAME: LOGGEROPTS:0 # # courierlogger(1) options. # LOGGEROPTS="-name=pop3d" ##NAME: DEFDOMAIN:0 # # Optional default domain. If the username does not contain the # first character of DEFDOMAIN, then it is appended to the username. # If DEFDOMAIN and DOMAINSEP are both set, then DEFDOMAIN is appended # only if the username does not contain any character from DOMAINSEP. # You can set different default domains based on the the interface IP # address using the -access and -accesslocal options of couriertcpd(1). DEFDOMAIN="@interzone.it" ##NAME: POP3DSTART:0 # # POP3DSTART is not referenced anywhere in the standard Courier programs # or scripts. Rather, this is a convenient flag to be read by your system # startup script in /etc/rc.d, like this: # # . /etc/courier/pop3d DEFDOMAIN="@mydomain.com" ##NAME: POP3DSTART:0 # # POP3DSTART is not referenced anywhere in the standard Courier programs # or scripts. Rather, this is a convenient flag to be read by your system # startup script in /etc/rc.d, like this: # # . /etc/courier/pop3d # case x$POP3DSTART in # x[yY]*) # /usr/lib/courier/pop3d.rc start # ;; # esac # # The default setting is going to be NO, until Courier is shipped by default # with enough platforms so that people get annoyed with having to flip it to # YES every time. # x[yY]*) # /usr/lib/courier/pop3d.rc start # ;; # esac # # The default setting is going to be NO, until Courier is shipped by default # with enough platforms so that people get annoyed with having to flip it to # YES every time. POP3DSTART=YES ##NAME: MAILDIRPATH:0 # # MAILDIRPATH - directory name of the maildir directory. # MAILDIRPATH=.maildir iptables Chain INPUT (policy DROP 20 packets, 1016 bytes) pkts bytes target prot opt in out source destination 60833 16M ACCEPT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:143 state NEW,ESTABLISHED 18970 971K ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp spts:1024:65535 dpt:110 state NEW,ESTABLISHED Chain FORWARD (policy DROP 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT tcp -- * * 192.168.0.0/24 0.0.0.0/0 tcp dpt:110 0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 0 0 ACCEPT tcp -- * * 192.168.1.0/24 0.0.0.0/0 tcp dpt:110 0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:25 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:110 pop3d.cnf RANDFILE = /usr/lib...pop3d.rand [req] default_bits = 1024 encrypt_key = yes distinguidhed_name = req_dn x509_extensions = cert_type prompt = no [req_dn] C=US ST=NY L= New York O=Courier Mail Server OU=Automatically-generated POP3 SSL key CN=localhost [email protected] [cert_type] nsCertType = server

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• Can a power loss break an hard disk?

  - by dag729

  Today I was working when all of a sudden a power loss (in the entire house) occurs. I tried to reboot the machine but it states that there's an "Ebios error"; tried with an Ubuntu 9.04 live cd and while booting it states that there are various I/O errors on the first partition (the one with the boot sector). Now I managed to backup all of my data (using the live cd aforementioned) but I don't know if it'll worth the hassle of a reinstallation (and if it could do something useful) or if the only thing to do is to drop the hard disk as far as possible... Thanks in advance.

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• When adding second processor to SQL Server, will it automatically balance the load?

  - by ddavis

  We have a SQL Server 2008 R2 (10.5) on a dedicated box with a single 2.4Ghz processor, which regularly runs at 70-80% CPU. We are going to be adding a significant number of users to the application and therefore want to add a second processor to the box (scale up). Will SQL Server automatically use the second processor to balance threads, or is there additional configuration that will need to be done? In other words, will adding the second processor drop my CPU usage to 35-40% per CPU, automatically balancing the load? Based on what I read here, it seems that it will: http://msdn.microsoft.com/en-us/library/ms181007.aspx However, I've read elsewhere that CPU performance gains can be made by assigning database tables to different filegroups, but I'm not sure we want to get that complicated at this point.

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• Using rsyslog to create different log files for different processes

  - by user80203

  Scenario: I am running a cluster of machines. Each machine runs various python programs with a unique (across the cluster), but dynamically set, ID. Right now, they are all logging locally. So, I might have logs that look like: process_5.log process_6.log for processes that had ID's 5 and 6. Another machine may have: process_20.log process_25.log I wish to forward these logs to a logserver running rsyslogd. Python's logging facility has a nice syslog handler, so I understand how I could connect to the remote server. What I haven't figured out is how to use templating/DynFile to maintain log separation. e.g. on the logserver, I will want to see: process_5.log process_6.log process_20.log process_25.log which correspond to the logs of the same name on the sending machine. Is there a way to pull this off with rsyslogd templating?

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• What does SQL Server do if you select more than 1 full backup when doing a restore?

  - by Rob Sobers

  I have a backup file that contains 2 backup sets. Both backup sets are full backups. When I open SQL Server Management Studio and choose "Restore..." and pick the file as my device, it lets me pick both backup sets. The restore operation completes without error, but I'm not sure exactly what SQL server did. Did it restore the first one, drop the database, and then restore the second one? Will it always let the most recent full backup prevail? It doesn't seem to make sense for SQL server to even allow you to select more than one full backup.

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• SFTP over double server hop

  - by josh.trow

  I'm trying to work out a method to allow me to access files on an SFTP server than I cannot access from my local machine. Currently, I have to SSH to a remote server (it is in a certain IP block that the final SFTP server will accept from), then from there SFTP to the destination server. From there, I get the files I am interested in, thereby dropping them onto the middleman server, from which I can get the files either over a Samba share or with a direct scp. I also work in the reverse, where I drop the files onto the middleman, SSH to it then SFTP to the destination and put them into the appropriate folders. My goal is to shorten this. The unfortunate restrictions are that my machine is Windows (I use KiTTy and/or Cygwin) and I cannot modify the middleman server (or destination server) in any way. I am willing to use command line or GUI programs so long as it works and is free. Any ideas?

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• Existing tables with binaries to use filestream

  - by user1098487

  I've got a few tables for which I want to use filestream storage. These tables already contain binary data and have rowguids. However at the time they were were created, the tables were not added to a filestream enabled filegroup. What is the best way to have these tables use filestream at this point? Do I need to drop + recreate the tables and migrate the data? Is there an easier way? The database already has filestream enabled and there are other tables which are using them.

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• Restricting output to only allow localhost using iptables

  - by Dave Forgac

  I would like to restrict outbound traffic to only localhost using iptables. I already have a default DROP policy on OUTPUT and a rule REJECTing all traffic. I need to add a rule above that in the OUTPUT chain. I have seen a couple different examples for this type of rule, the most common being: -A OUTPUT -o lo -j ACCEPT and -A OUTPUT -o lo -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT Is there any reason to use the latter rather than the former? Can packets on lo have an address other than 127.0.0.1?

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• iptables: How to create a rule for a single website that does not apply to other websites?

  - by Kris

  Virtual Dedicated Server hosts 10 websites. 1 firewall made with iptables If one of those 10 websites gets hit by too many ping requests coming from one IP address, how do I limit or drop it without dropping it for the other 9 websites? Do I create a firewall for every website ? If so, how? Or is it better to change my rules? If so, how? Thank you. Original question was posted here iptables: what's best practice when there're several websites but you want to use a rule for a single website? but it was too vague. Let me know if more info is needed.

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• Application stops on back button in new activity

  - by Bruno Almeida

  I have this application, that have a listView, and when I click in a item on listView, it opens a new activity. That works fine! But, if I open the new activity and than press the "back button" the application "Unfortunately, has stopped". Is there something I'm doing wrong? Here is my code: First activity: public class AndroidSQLite extends Activity { private SQLiteAdapter mySQLiteAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ListView listContent = (ListView)findViewById(R.id.contentlist); mySQLiteAdapter = new SQLiteAdapter(this); mySQLiteAdapter.openToRead(); Cursor cursor = mySQLiteAdapter.queueAll(); startManagingCursor(cursor); String[] from = new String[]{SQLiteAdapter.KEY_NOME,SQLiteAdapter.KEY_ID}; int[] to = new int[]{R.id.text,R.id.id}; SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(this, R.layout.row, cursor, from, to); listContent.setAdapter(cursorAdapter); listContent.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Toast.makeText(getBaseContext(), id + "", Toast.LENGTH_LONG).show(); Intent details = new Intent(getApplicationContext(),DetailsPassword.class); startActivity(details); } }); mySQLiteAdapter.close(); } } Second Activity: public class DetailsPassword extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TextView text = new TextView(getApplicationContext()); text.setText("Text to show"); setContentView(text); } } // ===== EDITED ===== here is the Stack Track 10-30 08:55:05.744: E/AndroidRuntime(28046): FATAL EXCEPTION: main 10-30 08:55:05.744: E/AndroidRuntime(28046): java.lang.RuntimeException: Unable to resume activity {com.example.sqliteexemple2/com.example.sqliteexemple2.AndroidSQLite}: java.lang.IllegalStateException: trying to requery an already closed cursor android.database.sqlite.SQLiteCursor@4180a370 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2701) 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2729) 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1250) 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.os.Handler.dispatchMessage(Handler.java:99) 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.os.Looper.loop(Looper.java:137) 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.app.ActivityThread.main(ActivityThread.java:4931) 10-30 08:55:05.744: E/AndroidRuntime(28046): at java.lang.reflect.Method.invokeNative(Native Method) 10-30 08:55:05.744: E/AndroidRuntime(28046): at java.lang.reflect.Method.invoke(Method.java:511) 10-30 08:55:05.744: E/AndroidRuntime(28046): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 10-30 08:55:05.744: E/AndroidRuntime(28046): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558) 10-30 08:55:05.744: E/AndroidRuntime(28046): at dalvik.system.NativeStart.main(Native Method) 10-30 08:55:05.744: E/AndroidRuntime(28046): Caused by: java.lang.IllegalStateException: trying to requery an already closed cursor android.database.sqlite.SQLiteCursor@4180a370 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.app.Activity.performRestart(Activity.java:5051) 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.app.Activity.performResume(Activity.java:5074) 10-30 08:55:05.744: E/AndroidRuntime(28046): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2691) 10-30 08:55:05.744: E/AndroidRuntime(28046): ... 10 more

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• Lotus 8.5 Question Attaching file in mail

  - by Boxdog

  A user has lost the ability to attach files in mail. Drag and still drop works, but not toolbar Attach or Actions / Attach file. I have replaced Design template for mail . Backup and reinstalled Lotus. Using only the users notes.ini user.id & names.nsf. but still the function still does not work. Is there a registry key that may control this function or can it be a corrupt *.ini or *.id file?

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• Tar and gzip together, but the other way round?

  - by Boldewyn

  Gzipping a tar file as whole is drop dead easy and even implemented as option inside tar. So far, so good. However, from an archiver's point of view, it would be better to tar the gzipped single files. (The rationale behind it is, that data loss is minified, if there is a single corrupt gzipped file, than if your whole tarball is corrupted due to gzip or copy errors.) Has anyone experience with this? Are there drawbacks? Are there more solid/tested solutions for this than find folder -exec gzip '{}' \; tar cf folder.tar folder

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• Why one loop is performing better than other memory wise as well as performance wise?

  - by Mohit

  I have following two loops in C#, and I am running these loops for a collection with 10,000 records being downloaded with paging using "yield return" First foreach(var k in collection) { repo.Save(k); } Second var collectionEnum = collection.GetEnumerator(); while (collectionEnum.MoveNext()) { var k = collectionEnum.Current; repo.Save(k); k = null; } Seems like that the second loop consumes less memory and it faster than the first loop. Memory I understand may be because of k being set to null(Even though I am not sure). But how come it is faster than for each. Following is the actual code [Test] public void BechmarkForEach_Test() { bool isFirstTimeSync = true; Func<Contact, bool> afterProcessing = contactItem => { return true; }; var contactService = CreateSerivce("/administrator/components/com_civicrm"); var contactRepo = new ContactRepository(new Mock<ILogger>().Object); contactRepo.Drop(); contactRepo = new ContactRepository(new Mock<ILogger>().Object); Profile("For Each Profiling",1,()=>{ var localenumertaor=contactService.Download(); foreach (var item in localenumertaor) { if (isFirstTimeSync) item.StateFlag = 1; item.ClientTimeStamp = DateTime.UtcNow; if (item.StateFlag == 1) contactRepo.Insert(item); else contactRepo.Update(item); afterProcessing(item); } contactRepo.DeleteAll(); }); } [Test] public void BechmarkWhile_Test() { bool isFirstTimeSync = true; Func<Contact, bool> afterProcessing = contactItem => { return true; }; var contactService = CreateSerivce("/administrator/components/com_civicrm"); var contactRepo = new ContactRepository(new Mock<ILogger>().Object); contactRepo.Drop(); contactRepo = new ContactRepository(new Mock<ILogger>().Object); var itemsCollection = contactService.Download().GetEnumerator(); Profile("While Profiling", 1, () => { while (itemsCollection.MoveNext()) { var item = itemsCollection.Current; //if First time sync then ignore and overwrite the stateflag if (isFirstTimeSync) item.StateFlag = 1; item.ClientTimeStamp = DateTime.UtcNow; if (item.StateFlag == 1) contactRepo.Insert(item); else contactRepo.Update(item); afterProcessing(item); item = null; } contactRepo.DeleteAll(); }); } static void Profile(string description, int iterations, Action func) { // clean up GC.Collect(); GC.WaitForPendingFinalizers(); GC.Collect(); // warm up func(); var watch = Stopwatch.StartNew(); for (int i = 0; i < iterations; i++) { func(); } watch.Stop(); Console.Write(description); Console.WriteLine(" Time Elapsed {0} ms", watch.ElapsedMilliseconds); } I m using the micro bench marking, from a stackoverflow question itself benchmarking-small-code The time taken is For Each Profiling Time Elapsed 5249 ms While Profiling Time Elapsed 116 ms

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• Subscript/Superscript Hotkey for Excel 2010 Macro?

  - by advs89

  Background In Excel 2010, for some ridiculous reason, there is no built-in hotkey (or even a button on the toolbar) for subscripting/superscripting text within a text cell. You can, however, highlight the text, right-click the selection, click format, and then check the [x] subscript or [x] superscript checkbox. Question Are there any kinds of excel macros or workarounds to map two keyboard hotkeys to the subscript and superscript keys, respectively? (It should only be, like, two lines of code - one for the event handler and one for the actual procedure call... I would write one myself but my VBA is rusty, at best, and I am pretty confident there is probably already some kind of solution, despite my inability to find one via search engine) Thanks for any help you can provide!

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• Automate opening HTML and printing to PDF

  - by craigpatik

  I need a way to automate the following process in Windows 7: Open an .html file in Internet Explorer Print to PDF Save the PDF with a patterned file name (i.e., original_name_YYYY-MM-DD.pdf) Ideally, I could drag and drop several files or open a whole folder of files at once and a PDF would be created for each one. A command line solution is also acceptable. The files have to be opened in the browser because parts of the page are rendered with JavaScript on page load. In other words, if you simply right-click on the file in Explorer and choose "print", the resulting file is not the same because the JS didn't run. If it helps, Internet Explorer can be set as the default browser, and a PDF printer can be set as the default printer.

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• Lost Linux root password - Recovery mode and init=/bin/bash fail

  - by Albeit

  I lost/forgot the root password to a server sitting beside me and am trying to reset it. I would rather not have to wipe and re-install or use a Live CD (server is running Ubuntu Server 12.04). What I've tried so far... 1) Boot into "Recovery mode" from Grub2 boot menu then drop into root shell prompt. I am prompted to "Give root password for maintenance". No-go. 2) Change the boot parameters for the main boot option to include "rw" and "init=/bin/bash". When I then boot with Ctrl-X, the screen goes black, and nothing happens (I've waited five minutes). init=/bin/sh and init=/bin/static-sh both do the same thing, while init=/sbin/init boots as normal. Is there anything else I can try to reset the root password? Thank you!

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• PHP - Accessing a value selected in Combobox

  - by Pavitar

  I want to write a code that should let me select from a drop down list and onClick of a button load the data from a mysql database.However I cannot access the value selected in the drop down menu.I have tried to access them by $_POST['var_name'] but still can't do it. I'm new to PHP. Following is my code: <?php function load(){ $department = $_POST['dept']; $employee = $_POST['emp']; //echo "$department"; //echo "$employee"; $con = mysqli_connect("localhost", "root", "pwd", "payroll"); $rs = $con->query("select * from dept where deptno='$department'"); $row = $rs->fetch_row(); $n = $row[0]; $rs->free(); $con->close(); } ?> <html> <head> <title>Payroll</title> </head> <body> <h1 align="center">IIT Department</h1> <form method="post"> <table align="center"> <tr> <td> Dept Number: <select name="dept"> <option value="10" selected="selected">10</option> <option value="20">20</option> <option value="30">30</option> <option value="40">40</option> </select> </td> <td> <input type="button" value="ShowDeptEmp" name="btn1"> </td> <td> Job: <select name="job"> <option value="President" selected="selected">President</option> <option value="Manager">Manager</option> <option value="Clerk">Clerk</option> <option value="Salesman">Salesman</option> <option value="Analyst">Analyst</option> </select> </td> <td> <input type="button" value="ShowJobEmp" name="btn1"> </td> </tr> </table> </form> <?php if(isset($_POST['dept']) && $_POST['dept'] != "") load(); ?> </body> </html>

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• Need an FTP Client to run on a server and allow scheduling and not need a login to run

  - by William Todd Salzman

  I am looking at FTP clients to transfer from an external FTP Server. I need to place this FTP client on a server in the DMZ that will not be routinely logged in, so the client needs to run as a service or something like that? I need the client to be able to retrieve files from the server on a schedule (Tuesday Mornings) and drop them in a local directory for pickup by another process. I would also like the solution to be capable of performing sftp transfers. Most marketing material is geared towards the person who will be running this on their desktop, not on a server, so several of my points are never in the product specs. update DMZ can run either Windows versions or Linux versions * end update *

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• Option and command keys in Mac OS X are swapped and keyboard preferences do not set them back.

  - by bikesandcode

  On my MacBook Pro, I occasionally use external keyboards, generally Windows ones and things have been fine. Yesterday, I plugged in a new one, remapped the command/option keys so the windows/alt keys were in the same configuration, again, nothing new here. However, this time when I unplugged the USB keyboard, the laptops option/command keys remained switched. More annoying is that if I go into the System Preferences - Keyboards - Modifier keys, remapping the keys to actions does not work. I can use the drop downs to disable any specific keys, but switching the behaviours does nothing. (Cmd/Option obvious, tried remapping anything to caps lock and a few other combinations, no joy. Restore defaults set the configuration to what I'd expect, but the settings are evidently ignored.) So: Any ideas?

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• How to find malformed - corrupted - dos - BOMByte Files in Linux

  - by Syquus

  I've several problems maintaining large production servers, in which some developers drop files from Windows environments, sometime with BOM-bytes (We use UTF8, and no need for that), causing lots of troubles. Other times, I got a "no end of line" and "[DOS]" labels when vim-editing files directly on the server. I recently discovered how to find for the bom byte, and how to delete it in a batch script. What about illegal bytes, bad EOLs? Is it safe to use DOS Text Files on a linux environment? Any drawbacks If I use to convert them with dos2unix cmd ? Regards

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• No Method Error in Ruby

  - by JayG

  Hi, I currently have a Rails Apps that lets users drag and drop certain elements of the webpage and updates the application based on the users choice. This is done with the help of the Rails helpers and AJAX. However I keep running into a "NoMethodError" in Ruby. NoMethodError in ProjectsController#member_change undefined method `symbolize_keys' for nil:NilClass Here is the method that is being called. My trace says that error is occurring in this line: before = u.functions_for(r.authorizable_id) u.roles << r unless u.roles.include? r u.save flag_changed = true after = u.functions_for(r.authorizable_id) And here is the function being called def member_change flag_changed = false params['u'] =~ /role_(\d+)_user_(\d+)/ drag_role_id = $1 user_id = $2 params['r'] =~ /role_(\d+)/ drop_role_id = $1 if u=User.find(user_id) if r=Role.find(drop_role_id) if drag_role_id.to_i !=0 and old_r=Role.find(drag_role_id) if drag_role_id == drop_role_id #fom A to A => nothing happen flash.now[:warning] = _('No Operation...') elsif r.authorizable_id == old_r.authorizable_id #the same project? old_r.users.delete(u) unless old_r.valid? flash.now[:warning] = _('Group "Admin" CAN NOT be EMPTY.') old_r.users << u #TODO: better recovery member_edit #if flag_changed render :action => :member_edit, :layout => 'module_with_flash' return end old_r.save r.users << u unless r.users.include? u r.save flag_changed = true before = u.functions_for(r.authorizable_id) after = u.functions_for(r.authorizable_id) added = after - before removed = before - after added.each do |f| ApplicationController::send_msg(:function,:create, {:function_name => f.name, :user_id => u.id, :project_id => r.authorizable_id }) end removed.each do |f| ApplicationController::send_msg(:function,:delete, {:function_name => f.name, :user_id => u.id, :project_id => r.authorizable_id }) end flash.now[:notice] = _( 'Move User to Group' ) + " #{ r.name }" else flash.now[:warning] = _('You can\'t move User between Groups that belong to different Projects.') end else before = u.functions_for(r.authorizable_id) u.roles << r unless u.roles.include? r u.save flag_changed = true after = u.functions_for(r.authorizable_id) added = after - before added.each do |f| ApplicationController::send_msg(:function,:create, {:function_name => f.name, :user_id => u.id, :project_id => r.authorizable_id }) end flash.now[:notice] = _( 'Add User into Group' ) + " #{ r.name }" end else flash.now[:warn] = _( 'Group doesn\'t exist!' ) + ": #{ r.name }" end else flash.now[:warning] = _( 'User doesn\'t exist!' ) + ": #{ u.login }" end member_edit #if flag_changed render :action => :member_edit, :layout => 'module_with_flash' end and the JavaScript used to call the function jQuery('#RemoveThisMember').droppable({accept:'.RolesUsersSelection', drop:function(ev,ui){ if (confirm("This will remove User from this Group, are you sure?")) {jQuery.ajax({data:'u=' + encodeURIComponent(jQuery(ui.draggable).attr('id')), success:function(request){jQuery('#module_content').html(request);}, type:'post', url:'/of/projects/11/member_delete'});} }, hoverClass:'ProjectRoleDropDelete_active'}) Any ideas? Thanks,

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• Why would Linux VM in vSphere ESXi 5.5 show dramatically increased disk i/o latency?

  - by mhucka

  I'm stumped and I hope someone else will recognize the symptoms of this problem. Hardware: new Dell T110 II, dual-core Pentium G860 2.9 GHz, onboard SATA controller, one new 500 GB 7200 RPM cabled hard drive inside the box, other drives inside but not mounted yet. No RAID. Software: fresh CentOS 6.5 virtual machine under VMware ESXi 5.5.0 (build 174 + vSphere Client). 2.5 GB RAM allocated. The disk is how CentOS offered to set it up, namely as a volume inside an LVM Volume Group, except that I skipped having a separate /home and simply have / and /boot. CentOS is patched up, ESXi patched up, latest VMware tools installed in the VM. No users on the system, no services running, no files on the disk but the OS installation. I'm interacting with the VM via the VM virtual console in vSphere Client. Before going further, I wanted to check that I configured things more or less reasonably. I ran the following command as root in a shell on the VM: for i in 1 2 3 4 5 6 7 8 9 10; do dd if=/dev/zero of=/test.img bs=8k count=256k conv=fdatasync done I.e., just repeat the dd command 10 times, which results in printing the transfer rate each time. The results are disturbing. It starts off well: 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GB) copied, 20.451 s, 105 MB/s 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GB) copied, 20.4202 s, 105 MB/s ... but after 7-8 of these, it then prints 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GG) copied, 82.9779 s, 25.9 MB/s 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GB) copied, 84.0396 s, 25.6 MB/s 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GB) copied, 103.42 s, 20.8 MB/s If I wait a significant amount of time, say 30-45 minutes, and run it again, it again goes back to 105 MB/s, and after several rounds (sometimes a few, sometimes 10+), it drops to ~20-25 MB/s again. Plotting the disk latency in vSphere's interface, it shows periods of high disk latency hitting 1.2-1.5 seconds during the times that dd reports the low throughput. (And yes, things get pretty unresponsive while that's happening.) What could be causing this? I'm comfortable that it is not due to the disk failing, because I also had configured two other disks as an additional volume in the same system. At first I thought I did something wrong with that volume, but after commenting the volume out from /etc/fstab and rebooting, and trying the tests on / as shown above, it became clear that the problem is elsewhere. It is probably an ESXi configuration problem, but I'm not very experienced with ESXi. It's probably something stupid, but after trying to figure this out for many hours over multiple days, I can't find the problem, so I hope someone can point me in the right direction. (P.S.: yes, I know this hardware combo won't win any speed awards as a server, and I have reasons for using this low-end hardware and running a single VM, but I think that's besides the point for this question [unless it's actually a hardware problem].) ADDENDUM #1: Reading other answers such as this one made me try adding oflag=direct to dd. However, it makes no difference in the pattern of results: initially the numbers are higher for many rounds, then they drop to 20-25 MB/s. (The initial absolute numbers are in the 50 MB/s range.) ADDENDUM #2: Adding sync ; echo 3 > /proc/sys/vm/drop_caches into the loop does not make a difference at all. ADDENDUM #3: To take out further variables, I now run dd such that the file it creates is larger than the amount of RAM on the system. The new command is dd if=/dev/zero of=/test.img bs=16k count=256k conv=fdatasync oflag=direct. Initial throughput numbers with this version of the command are ~50 MB/s. They drop to 20-25 MB/s when things go south. ADDENDUM #4: Here is the output of iostat -d -m -x 1 running in another terminal window while performance is "good" and then again when it's "bad". (While this is going on, I'm running dd if=/dev/zero of=/test.img bs=16k count=256k conv=fdatasync oflag=direct.) First, when things are "good", it shows this: When things go "bad", iostat -d -m -x 1 shows this:

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