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• Postfix TLS issue

  - by HTF

  I'm trying to enable TLS on Postfix but the daemon is crashing: Sep 16 16:00:38 core postfix/master[1689]: warning: process /usr/libexec/postfix/smtpd pid 1694 killed by signal 11 Sep 16 16:00:38 core postfix/master[1689]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling CentOS 6.3 x86_64 # postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases broken_sasl_auth_clients = yes command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 disable_vrfy_command = yes home_mailbox = Maildir/ html_directory = no inet_interfaces = all inet_protocols = all local_recipient_maps = mail_owner = postfix mailbox_command = mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost mydomain = domain.com myhostname = mail.domain.com mynetworks = 127.0.0.0/8 myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES relay_domains = sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtp_tls_note_starttls_offer = yes smtp_tls_session_cache_database = btree:/var/lib/postfix/smtpd_tls_cache.db smtp_use_tls = yes smtpd_delay_reject = yes smtpd_error_sleep_time = 1s smtpd_hard_error_limit = 20 smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, reject_non_fqdn_hostname, reject_invalid_hostname, permit smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_pipelining, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_invalid_hostname, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_destination reject_rbl_client cbl.abuseat.org, reject_rbl_client bl.spamcop.net, permit smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = $myhostname smtpd_sasl_path = private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_sender_restrictions = permit_mynetworks, reject_non_fqdn_sender, reject_unknown_sender_domain, permit smtpd_soft_error_limit = 10 smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s smtpd_use_tls = yes tls_random_source = dev:/dev/urandom unknown_local_recipient_reject_code = 550

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• Installing PHP APC in Fedora - Unable to initialize module ?

  - by sri

  I have been trying to install APC on my Fedora Apache Server for showing progress bar while uploading files. But I am getting the following PHP Warning while starting XAMPP. Starting XAMPP for Linux 1.7.1... PHP Warning: PHP Startup: apc: Unable to initialize module Module compiled with module API=20090626, debug=0, thread-safety=0 PHP compiled with module API=20060613, debug=0, thread-safety=0 These options need to matchin Unknown on line 0 XAMPP: Starting Apache with SSL (and PHP5)... XAMPP: Starting MySQL... XAMPP: Another FTP daemon is already running. XAMPP for Linux started. My Server Details : OS : Fedora-12 XAMPP version : 1.7.1 PHP Version : 5.2.9 APC Version : 3.1.9 I have tried the process as is mentioned in here : 1)http://2bits.com/articles/installing-php-apc-gnulinux-centos-5.html 2)http://stevejenkins.com/blog/2011/08/how-to-install-apc-alternative-php-cache-on-centos-5-6/

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• What is NSString in struct?

  - by 4thSpace

  I've defined a struct and want to assign one of its values to a NSMutableDictionary. When I try, I get a EXC_BAD_ACCESS. Here is the code: //in .h file typedef struct { NSString *valueOne; NSString *valueTwo; } myStruct; myStruct aStruct; //in .m file - (void)viewDidLoad { [super viewDidLoad]; aStruct.valueOne = @"firstValue"; } //at some later time [myDictionary setValue:aStruct.valueOne forKey:@"key1"]; //dies here with EXC_BAD_ACCESS This is the output in debugger console: (gdb) p aStruct.valueOne $1 = (NSString *) 0xf41850 Is there a way to tell what the value of aStruct.valueOne is? Since it is an NSString, why does the dictionary have such a problem with it? ------------- EDIT ------------- This edit is based on some comments below. The problem appears to be in the struct memory allocation. I have no issues assigning the struct value to the dictionary in viewDidLoad, as mentioned in one of the comments. The problem is that later on, I run into an issue with the struct. Just before the error, I do: po aStruct.oneValue Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00000000 0x9895cedb in objc_msgSend () The program being debugged was signaled while in a function called from GDB. GDB has restored the context to what it was before the call. To change this behavior use "set unwindonsignal off" Evaluation of the expression containing the function (_NSPrintForDebugger) will be abandoned. This occurs just before the EXC_BAD_ACCESS: NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"MM-dd-yy_HH-mm-ss-A"]; NSString *date = [formatter stringFromDate:[NSDate date]]; [formatter release]; aStruct.valueOne = date; So the memory issue is most likely in my releasing of formatter. The date var has no retain. Should I instead be doing NSString *date = [[formatter stringFromDate:[NSDate date]] retain]; Which does work but then I'm left with a memory leak.

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• Exim - Sender verify failed - rejected RCPT

  - by Newtonx

  While checking on Exim's log messages I found many entries of the following message "Sender verify failed" "rejected RCPT" ... I 'm not an exim expert... I'm afraid Exim is not delivering 100% emails to recipients, because our Email Marketing Application its getting a lower OPEN RATE. Can someone helpe understand this log messages? Is it my server saying "No Such User Here" or a remote server? 174.111.111.11 represents my server IP. Thanks Exim log 2010-10-02 14:00:19 SMTP connection from myserverdomain.com.br () [174.111.111.11]:54514 I=[174.111.111.11]:25 closed by QUIT 2010-10-02 14:00:19 SMTP connection from [174.111.111.11]:54515 I=[174.111.111.11]:25 (TCP/IP connection count = 2) 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 Warning: Sender rate 672.4 / 1h 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 sender verify fail for <[email protected]>: No Such User Here 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 F=<[email protected]> rejected RCPT <[email protected]>: Sender verify failed 2010-10-02 14:00:19 SMTP connection from myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 closed by QUIT 2010-10-02 14:00:19 SMTP connection from [174.111.111.11]:54516 I=[174.111.111.11]:25 (TCP/IP connection count = 2) 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 Warning: Sender rate 673.3 / 1h 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 sender verify fail for <[email protected]>: No Such User Here 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 F=<[email protected]> rejected RCPT <[email protected]>: Sender verify failed 2010-10-02 14:00:19 SMTP connection from myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 closed by QUIT 2010-10-02 14:00:19 SMTP connection from [174.111.111.11]:54517 I=[174.111.111.11]:25 (TCP/IP connection count = 2) 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54517 I=[174.111.111.11]:25 Warning: Sender rate 674.3 / 1h 2010-10-02 14:00:20 H=myserverdomain.com.br () [174.111.111.11]:54517 I=[174.111.111.11]:25 sender verify fail for <Luciene_souza_vasconcellos=hotmail.com--2723--bounce@e-mydomain.com.br>: No Such User Here 2010-10-02 14:00:20 H=myserverdomain.com.br () [174.111.111.11]:54517 I=[174.111.111.11]:25 F=<Luciene_souza_vasconcellos=hotmail.com--2723--bounce@e-mydomain.com.br> rejected RCPT <[email protected]>: Sender verify failed

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• editing automated SharePoint emails

  - by Richard Collins

  Sharepoint sends out an automated email when a site collection has reached its quota warning level. The email says: You are receiving this e-mail message because you are an administrator of the following SharePoint Web site, which has exceeded the warning level for storage: https://mysite.xxx.ac.uk/personal/xxx/. To see how much storage is being taken up by this site, go to the View site collection usage summary: https://mysite.xxx.ac.uk/personal/xxx/_layouts/Usage.aspx. The problem is that the usage summary link needs to point somewhere else instead. How can I edit the body of the email to change the link? Thanks.

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• How do I fix a "cannot open display" error when opening an X program after ssh'ing with X11 forwarding enabled?

  - by Daryl Spitzer

  After launching the X11 app (XQuartz 2.3.6, xorg-server 1.4.2-apple56) on my Mac (OS X 10.6.8), opening an terminal in X11 and running xhost +, I then ssh -Y to my Ubuntu 10.04 VM (running on VMware Fusion). When I run gedit .bashrc (for example), I get: (gedit:9510): Gtk-WARNING **: cannot open display: set | grep DISPLAY returns nothing. But if I ssh -Y into my Ubuntu 11.04 machine, gedit .bashrc works. echo $DISPLAY returns "localhost:10.0". I tried export DISPLAY=localhost:10.0 while sshed into my VM and then running gedit .bashrc, but I get: (gedit:9625): Gtk-WARNING **: cannot open display: localhost:10.0 What could be different in the configuration of the two difference Ubuntu machines that would explain why one works and the other doesn't? Update: As suggested by Zoredache in the comment below, I ran sudo apt-get install xbase-clients, but I continue to have the same problem.

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• Accidental Complexity in OpenSSL HMAC functions

  - by Hassan Syed

  SSL Documentation Analaysis This question is pertaining the usage of the HMAC routines in OpenSSL. Since Openssl documentation is a tad on the weak side in certain areas, profiling has revealed that using the: unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len, const unsigned char *d, int n, unsigned char *md, unsigned int *md_len); From here, shows 40% of my library runtime is devoted to creating and taking down **HMAC_CTX's behind the scenes. There are also two additional function to create and destroy a HMAC_CTX explicetly: HMAC_CTX_init() initialises a HMAC_CTX before first use. It must be called. HMAC_CTX_cleanup() erases the key and other data from the HMAC_CTX and releases any associated resources. It must be called when an HMAC_CTX is no longer required. These two function calls are prefixed with: The following functions may be used if the message is not completely stored in memory My data fits entirely in memory, so I choose the HMAC function -- the one whose signature is shown above. The context, as described by the man page, is made use of by using the following two functions: HMAC_Update() can be called repeatedly with chunks of the message to be authenticated (len bytes at data). HMAC_Final() places the message authentication code in md, which must have space for the hash function output. The Scope of the Application My application generates a authentic (HMAC, which is also used a nonce), CBC-BF encrypted protocol buffer string. The code will be interfaced with various web-servers and frameworks Windows / Linux as OS, nginx, Apache and IIS as webservers and Python / .NET and C++ web-server filters. The description above should clarify that the library needs to be thread safe, and potentially have resumeable processing state -- i.e., lightweight threads sharing a OS thread (which might leave thread local memory out of the picture). The Question How do I get rid of the 40% overhead on each invocation in a (1) thread-safe / (2) resume-able state way ? (2) is optional since I have all of the source-data present in one go, and can make sure a digest is created in place without relinquishing control of the thread mid-digest-creation. So, (1) can probably be done using thread local memory -- but how do I resuse the CTX's ? does the HMAC_final() call make the CTX reusable ?. (2) optional: in this case I would have to create a pool of CTX's. (3) how does the HMAC function do this ? does it create a CTX in the scope of the function call and destroy it ? Psuedocode and commentary will be useful.

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• What permissions / ownership to set on PHP Sessions Folder when running FastCGI / PHP-FPM (as user "nobody")?

  - by Professor Frink

  I'm having trouble getting a number of scripts running because PHP-FPM can't write to my session folder: "2009/10/01 23:54:07 [error] 17830#0: *24 FastCGI sent in stderr: "PHP Warning: Unknown: open(/var/lib/php/session/sess_cskfq4godj4ka2a637i5lq41o5, O_RDWR) failed: Permission denied (13) in Unknown on line 0 PHP Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in Unknown on line 0" while reading upstream" Obviously this is a permission issue; my session folder's owner/group is the webserver's user, NGINX. PHP-FPM runs as nobody though, and hence adding it to the nginx group is not so trivial. A temporary solution is to set the permissions of /var/lib/php/session to 777 - I have a feeling that's not the "best practice" though. What is the best practice when you need to assign a daemon write access to a folder, but it is running as nobody ?

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• Known Hosts ECDSA Host Key Multiple Domains on One IP

  - by Jonah

  Hello, world!, I have a VPS set up with multiple domain names pointing to it. Arbitrarily, I like to access it via SSH through the domain name I'm dealing with. So for example, if I'm doing something with example1.com, I'll log in with ssh [email protected], and if I'm working with example2.com, I'll log in with ssh [email protected]. They both point to the same user on the same machine. However, because SSH keeps track of the server's fingerprint, it tells me that there is an offending host key, and makes me confirm access. $ ssh [email protected] Warning: the ECDSA host key for 'example2.com' differs from the key for the IP address '123.123.123.123' Offending key for IP in /home/me/.ssh/known_hosts:33 Matching host key in /home/me/.ssh/known_hosts:38 Are you sure you want to continue connecting (yes/no)? Is there a way to ignore this warning? Thanks!

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• ReadProcessMemory to memcpy conversion. Need help

  - by Phil

  I'm using: ReadProcessMemory(hProcess,(PVOID)(dwEngine_DLL+0x2E15C8+i),&memSnap[i],1,NULL); //Store the memory into a byte array To store a section of memory into an array of byte, but I realized this was sloppy since I'm in the same address space, but I'm not sure how to do the same thing with memcpy.

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• Any tool(s) for knowing the layout (segments) of running process in Windows?

  - by claws

  I've always been curious about How exactly the process looks in memory? What are the different segments(parts) in it? How exactly will be the program (on the disk) & process (in the memory) are related? My previous question: http://stackoverflow.com/questions/1966920/more-info-on-memory-layout-of-an-executable-program-process In my quest, I finally found a answer. I found this excellent article that cleared most of my queries: http://www.linuxforums.org/articles/understanding-elf-using-readelf-and-objdump_125.html In the above article, author shows how to get different segments of the process (LINUX) & he compares it with its corresponding ELF file. I'm quoting this section here: Courious to see the real layout of process segment? We can use /proc//maps file to reveal it. is the PID of the process we want to observe. Before we move on, we have a small problem here. Our test program runs so fast that it ends before we can even dump the related /proc entry. I use gdb to solve this. You can use another trick such as inserting sleep() before it calls return(). In a console (or a terminal emulator such as xterm) do: $ gdb test (gdb) b main Breakpoint 1 at 0x8048376 (gdb) r Breakpoint 1, 0x08048376 in main () Hold right here, open another console and find out the PID of program "test". If you want the quick way, type: $ cat /proc/`pgrep test`/maps You will see an output like below (you might get different output): [1] 0039d000-003b2000 r-xp 00000000 16:41 1080084 /lib/ld-2.3.3.so [2] 003b2000-003b3000 r--p 00014000 16:41 1080084 /lib/ld-2.3.3.so [3] 003b3000-003b4000 rw-p 00015000 16:41 1080084 /lib/ld-2.3.3.so [4] 003b6000-004cb000 r-xp 00000000 16:41 1080085 /lib/tls/libc-2.3.3.so [5] 004cb000-004cd000 r--p 00115000 16:41 1080085 /lib/tls/libc-2.3.3.so [6] 004cd000-004cf000 rw-p 00117000 16:41 1080085 /lib/tls/libc-2.3.3.so [7] 004cf000-004d1000 rw-p 004cf000 00:00 0 [8] 08048000-08049000 r-xp 00000000 16:06 66970 /tmp/test [9] 08049000-0804a000 rw-p 00000000 16:06 66970 /tmp/test [10] b7fec000-b7fed000 rw-p b7fec000 00:00 0 [11] bffeb000-c0000000 rw-p bffeb000 00:00 0 [12] ffffe000-fffff000 ---p 00000000 00:00 0 Note: I add number on each line as reference. Back to gdb, type: (gdb) q So, in total, we see 12 segment (also known as Virtual Memory Area--VMA). But I want to know about Windows Process & PE file format. Any tool(s) for getting the layout (segments) of running process in Windows? Any other good resources for learning more on this subject? EDIT: Are there any good articles which shows the mapping between PE file sections & VA segments?

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• Outlook 2010 - Export of an Exchange OST to PST creates files with different sizes each time

  - by Jiri Pik

  This is a most weird issue. I have a couple of exchange OST mailboxes, and just for security, I am exporting them using File / Import / Export to a file / Export to PST file. If I run the export consecutively, it always creates files with different file sizes, WITH NO ERROR OR WARNING that something went wrong. The files should be of the same size as you run it right after the previous backup finished. I found out that if the filesize is substantially lower, then a reboot and back up can fix this up. What's your insight into this problem? What could cause that the files have different sizes and what could have caused that there is no warning? I suspected some Windows Search issue as sometimes the backup fails with a dialog error stating that Windows Search terminated the export.

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• Add Data to DataRepeater Control in winform

  - by Mohsan

  hi. Visual Studio 2008 service pack 1 comes with Visual Basic Powerpack and has DataRepeatr control. i want to know that how I can add data in this control. i have in memory data. the examples i found on net are about binding DataSet to DataRepeater by fetching data from database. i want to bind in memory data. how to do this.

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• Getting "open_basedir restriction in effect" in spite of adding the correct entry.

  - by akshatc

  I am trying to create a shared hosting scenario, using open_basedir option of php. I am doing this by adding the following to apache2.conf <VirtualHost *:80> ServerName lt1.example.net DocumentRoot /home/akshat/example/tmpblogs/tb1/ php_admin_value open_basedir /home/akshat/example/tmpblogs/tb1/ </VirtualHost> <VirtualHost *:80> ServerName lt2.example.net DocumentRoot /home/akshat/example/tmpblogs/tb2/ php_admin_value open_basedir /home/akshat/example/tmpblogs/tb2/ </VirtualHost> Now when I access lt2.example.net, I get the error: Warning: Unknown: open_basedir restriction in effect. File(/home/akshat/example/tmpblogs/tb2/index.php) is not within the allowed path(s): (0) in Unknown on line 0 Warning: Unknown: failed to open stream: Operation not permitted in Unknown on line 0 Fatal error: Unknown: Failed opening required '/home/akshat/example/tmpblogs/tb2/index.php' (include_path='.:/usr/share/php:/usr/share/pear') in Unknown on line 0 I was getting the same error while accessing "lt1.example.net" too, but then it suddenly became alright. What am I doing wrong here?

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• weird postgresql log entries

  - by hyperboreean

  I am trying to figure out why I get some weird entries in my postgresql log after I do a restart: 2010-05-14 11:30:25 EEST LOG: database system was shut down at 2010-05-14 11:30:22 EEST 2010-05-14 11:30:25 EEST LOG: autovacuum launcher started 2010-05-14 11:30:25 EEST LOG: database system is ready to accept connections 2010-05-14 11:30:25 EEST LOG: incomplete startup packet 2010-05-14 11:30:40 EEST WARNING: there is already a transaction in progress 2010-05-14 11:30:40 EEST LOG: could not receive data from client: Connection reset by peer 2010-05-14 11:30:40 EEST LOG: unexpected EOF on client connection First, there's the 2010-05-14 11:30:25 EEST LOG: incomplete startup packet which bugs me. Anyone has any idea why this happens? And also, this one is very strange: 2010-05-14 11:30:40 EEST WARNING: there is already a transaction in progress ...

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• Is it safe to install vlc on ubuntu 10.04?

  - by officespace

  In ubuntu 10.04, when I apt-get install vlc I get this warning: WARNING: The following packages cannot be authenticated! liba52-0.7.4 libavutil49 libgsm1 libschroedinger-1.0-0 libavcodec52 libavformat52 libcddb2 libdvbpsi5 libdvdread4 libdvdnav4 libebml0 libenca0 libfaad2 libiso9660-7 liblua5.1-0 libmad0 libmatroska0 libmodplug0c2 libmpcdec3 libmpeg2-4 libpostproc51 libqtcore4 libqtgui4 libsdl-image1.2 libswscale0 libtar libtwolame0 libvcdinfo0 vlc-data libvlccore2 libvlc2 libass4 libdca0 libupnp3 libx264-85 vlc-nox libxcb-keysyms1 vlc vlc-plugin-pulse Install these packages without verification [y/N]? Why is this happening and is it safe to install these packages without verification? I'd appreciate any help.

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• do I need to close an audio Clip?

  - by Michael

  have an application that processes real-time data and is supposed to beep when a certain event occurs. The triggering event can occur multiple times per second, and if the beep is already playing when another event triggers the code is just supposed to ignore it (as opposed to interrupting the current beep and starting a new one). Here is the basic code: Clip clickClip public void prepareProcess() { super.prepareProcess(); clickClip = null; try { clipFile = new File("C:/WINDOWS/Media/CHIMES.wav"); ais = AudioSystem.getAudioInputStream(clipFile); clickClip = AudioSystem.getClip(); clickClip.open(ais); fileIsLoaded = true; } catch (Exception ex) { clickClip = null; fileIsLoaded = false; } } public void playSound() { if (fileIsLoaded) { if ((clickClip==null) || (!clickClip.isRunning())) { try { clickClip.setFramePosition(0); clickClip.start(); } catch (Exception ex) { System.out.println("Cannot play click noise"); ex.printStackTrace(); } } } The prepareProcess method gets run once in the beginning, and the playSound method is called every time a triggering event occurs. My question is: do I need to close the clickClip object? I know I could add an actionListener to monitor for a Stop event, but since the event occurs so frequently I'm worried the extra processing is going to slow down the real-time data collection. The code seems to run fine, but my worry is memory leaks. The code above is based on an example I found while searching the net, but the example used an actionListener to close the Clip specifically "to eliminate memory leaks that would occur when the stop method wasn't implemented". My program is intended to run for hours so any memory leaks I have will cause problems. I'll be honest: I have no idea how to verify whether or not I've got a problem. I'm using Netbeans, and running the memory profiler just gave me a huge list of things that I don't know how to read. This is supposed to be the simple part of the program, and I'm spending hours on it. Any help would be greatly appreciated! Michael

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• Question about ubuntu untrusted source, gpg, keyserver

  - by ???

  I have mirrored the ubuntu archive repository (I must say it's rather huge). Then, I can apt-get install with no problem, but it prompts with following warning: WARNING: The following packages cannot be authenticated! xxxx, xxxx, ... Install these packages without verification [y/N]? Well, you can always install it. But, I can't install from the ubuntu software GUI. Which require trusted source. So, 1. How to force the GUI to install untrusted package? 2. Should I configure GPG to receive some public keys? (I've already installed ubuntu-keyring, debian-keyring, but it still untrusted) 3. Should I configure GPG to receive unknown keys from some specific keyservers, automatically?

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• cannot install matplotlib, freetype2 headers are ignored

  - by tgraf

  I want to install matplotlib via pip. There is a problem with freetype2.h REQUIRED DEPENDENCIES numpy: 1.6.2 freetype2: found, but unknown version (no pkg-config) * WARNING: Could not find 'freetype2' headers in any * of '.', './freetype2'. Somebody had a similar problem ( How to install matplotlib on OS X?), and it was suggested to install pkg-config first. I did that with macports, but I still get the same warning. I used find to look for the headers, and they are definitely present in: /opt/X11/include/ft2build.h /usr/X11/include/ft2build.h How can I use those files to install matplotlib?

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• Sound Manager Classes for Windows

  - by Yakov

  I need some classes for playing short wav sounds, this classes would load this wav files into memory when an instance created, play sounds in background when needed, release this wav files from memory when an instance disposed. How can I do this on C# for windows (.Net 2.0)? (Win API's sndPlaySound, OpenAL or may be any wrapper) Ideally I would love to find an exist solution that simple and able to solve my task. Do you know any solutions for this issue?

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• gcc segmentation fault compiling 20k file

  - by aaa

  hi. I have fairly large file, 20k lines long (auto generated). It has been compiling okay, but after adding new if/endif preprocessor block, I started getting gcc internal errors: segmentation fault. the code inside new preprocessor block is not being compiled, so I am not sure where the error is coming from. my only guess is memory, but as far as I can tell it does not exhaust computer memory. Any thoughts?

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• Quad Core host with hyper-threading, how many processors to configure in VirtualBox?

  - by Anthony

  I have a quad-core i7 processor with hyperthreading (8 logical cores), when I configured a virtual machine to use 8 processors, VirtualBox gave me a warning saying that I only have four cores (which is true) and that this may cause a performance issue. But hyper-threading is a hardware feature, so the OS sees 8 cores and it sends instructions to all 8. What if setting it to 4 caused the VM to use 2 cores (4 threads) instead of 4 simultaneous threads (on all 4 cores)? Does the warning I got take into account that my machine has hyper-threading?

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• Postfix + SASLAUTHD + MySQL authentication problems

  - by Or W

  I've been trying to sort this out for the past 6 hours or so, this is the error message I'm facing (Running CentOS x64): /var/log/maillog: Jun 22 20:42:49 ptroa postfix/smtpd[10130]: warning: SASL authentication failure: Password verification failed Jun 22 20:42:49 ptroa postfix/smtpd[10130]: warning: bzq-79-177-192-133.red.bezeqint.net[79.177.192.133]: SASL PLAIN authentication failed: authentication failure Jun 22 20:42:49 ptroa postfix/smtpd[10130]: warning: bzq-79-177-192-133.red.bezeqint.net[79.177.192.133]: SASL LOGIN authentication failed: authentication failure /var/log/messages: Jun 22 20:15:38 ptroa saslauthd[9401]: do_auth : auth failure: [user=myuser] [service=smtp] [realm=domain.com] [mech=pam] [reason=PAM auth error] I have dovecot installed as well and I'm able to receive emails via the MySQL authentication. The problem is when I'm trying to use SMTP to send out emails. Some config files: /etc/postfix/main.cf: # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. myorigin = /etc/mailname smtpd_banner = Server Message biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = /usr/share/doc/postfix # TLS parameters smtpd_tls_cert_file = /etc/postfix/smtpd.cert smtpd_tls_key_file = /etc/postfix/smtpd.key smtpd_use_tls = yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = domain.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all html_directory = /usr/share/doc/postfix/html message_size_limit = 30720000 virtual_alias_domains = virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf virtual_mailbox_base = /home/vmail virtual_uid_maps = static:5000 virtual_gid_maps = static:5000 smtpd_sasl_auth_enable = yes broken_sasl_auth_clients = yes smtpd_sasl_authenticated_header = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination virtual_create_maildirsize = yes virtual_maildir_extended = yes proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_cano$ virtual_transport = dovecot dovecot_destination_recipient_limit = 1 /etc/default/saslauthd: START=yes DESC="SASL Authentication Daemon" NAME="saslauthd" MECHANISMS="pam" MECH_OPTIONS="" THREADS=5 OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r" /etc/pam.d/smtp: #%PAM-1.0 #auth include password-auth #account include password-auth auth required pam_mysql.so user=mail_admin passwd=password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1 verbose=1 account sufficient pam_mysql.so user=mail_admin passwd=password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1 verbose=1

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• Integer overflow exploitable?

  - by wuntee

  Does anyone have a detailed explanation on how integers can be exploited? I have been reading a lot about the concept, and I understand what an it is, and I understand buffer overflows, but I dont understand how one could modify memory reliably, or in a way to modify application flow, by making an integer larger than its defined memory....

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• Why reduce the size of the Java JVM thread stack?

  - by djangofan

  I was reading an article on handling Out Of Memory error conditions in Java (and on JBoss platform) and I saw this suggestion to reduce the size of the threadstack. Can anyone explain how "reducing" the size of threadstack will help with a max memory error condition? http://community.jboss.org/wiki/OutOfMemoryExceptions

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