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  • C++ Bubble Sorting for Singly Linked List [closed]

    - by user1119900
    I have implemented a simple word frequency program in C++. Everything but the sorting is OK, but the sorting in the following script does not work. Any emergent help will be great.. #include <stdio.h> #include <string.h> #include <stdlib.h> #include <ctype.h> #include <iostream> #include <fstream> #include <cstdio> using namespace std; #include "ProcessLines.h" struct WordCounter { char *word; int word_count; struct WordCounter *pNext; // pointer to the next word counter in the list }; /* pointer to first word counter in the list */ struct WordCounter *pStart = NULL; /* pointer to a word counter */ struct WordCounter *pCounter = NULL; /* Print statistics and words */ void PrintWords() { ... pCounter = pStart; bubbleSort(pCounter); ... } //end-PrintWords void bubbleSort(struct WordCounter *ptr) { WordCounter *temp = ptr; WordCounter *curr; for (bool didSwap = true; didSwap;) { didSwap = false; for (curr = ptr; curr->pNext != NULL; curr = curr->pNext) { if (curr->word > curr->pNext->word) { temp->word = curr->word; curr->word = curr->pNext->word; curr->pNext->word = temp->word; didSwap = true; } } } }

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  • parsing ssid with iwconfig in c

    - by user1781595
    I am about building a bar for DWM (ubuntu linux), showing wifi details such as the ssid. Thats my code: #include <stdio.h> #include <stdlib.h> int main( int argc, char *argv[] ) { FILE *fp; int status; char path[1035]; /* Open the command for reading. */ fp = popen("iwconfig", "r"); if (fp == NULL) { printf("Failed to run command\n" ); exit; } char s[500]; /* Read the output a line at a time - output it. */ while (fgets(path, sizeof(path)-1, fp) != NULL) { sprintf(s,"%s%s",s, path); } //printf("%s",s); /* close */ pclose(fp); char delimiter[1] = "s"; char *ptr; ptr = strtok(s, delimiter); printf("SSID: %s\n", ptr); return 0; } i am getting overflowerrors and dont know what to do. I dont think, thats a good way to get the ssid either... :/ Suggestions?

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  • 5.5.0 smtp;554 transaction failed spam message not queued

    - by Miguel
    Some users are trying to send email to certain domains using Exchange Server 2003, but the message is always is rejected and the following message is shown: 5.5.0 smtp;554 Transaction Failed Spam Message not queued The IP is not in a black list (checked using http://whatismyipaddress.com/blacklist-check and is clean - not listed). The emails were checked using using smtpdiag ("a troubleshooting tool designed to work directly on a Windows server with IIS/SMTP service enabled or with Exchange Server installed") and the connection using port 25 is ok. Also, an nslookup with set type=ptr shows (names and IP changed, "" means I typed something): C:\Documents and Settings\administrator>nslookup Default Server: publicdns.isp.net Address: 10.10.10.10 > server publicdns.isp.net Default Server: publicdns.isp.net Address: 10.10.10.10 > set type=ptr >mydomain.com Server: publicdns.isp.net Address: 10.10.10.10 mydomain.com primary name server = publicdns.isp.net responsible mail addr = root.isp.net serial = 2011061301 refresh = 10800 (3 hours) retry = 3600 (1 hour) expire = 604800 (7 days) default TTL = 86400 (1 day) > 20.21.22.23 Server: publicdns.isp.net Address: 10.10.10.10 23.22.21.20.in-addr.arpa name = mail.mydomain.com 20.21.in-addr.arpa nameserver = publicdns.isp.net 20.21.in-addr.arpa nameserver = publicdns2.isp.net publicdns2.isp.net internet address = 10.10.10.11 publicdns.isp.net internet address = 10.10.10.10 Server: publicdns.isp.net Address: 10.10.10.10 23.22.21.20.in-addr.arpa name = mail.mydomain.com 20.21.in-addr.arpa nameserver = publicdns.isp.net 20.21.in-addr.arpa nameserver = publicdns2.isp.net publicdns2.isp.net internet address = 10.10.10.11 publicdns.isp.net internet address = 10.10.10.10 > set type=mx > mydomain.com Server: publicdns.isp.net Address: 10.10.10.10 mydomain.com MX preference = 10, mail exchanger = mail.mydomain.com mydomain.com nameserver = publicdns.isp.net mydomain.com nameserver = publicdns2.isp.net mail.mydomain.com internet address = 20.21.22.23 publicdns2.isp.net internet address = 10.10.10.11 publicdns.isp.net internet address = 10.10.10.10 > set type=a > mydomain.com Server: publicdns.isp.net Address: 10.10.10.10 Nombre: mydomain.com Address: 20.21.22.23 When I test the spf record with http://www.mxtoolbox.com it shows: TXT mydomain.com 24 hrs v=spf1 a mx ptr ip4:20.21.22.23 mx:mail.mydomain.com -all Any clues of what's happening here?

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  • configure Reverse DNS for VPS with amazon route 53, ISP or Amazon Route 53 issue?

    - by Oscar Cabrero
    i have a VPS hosted with myhosting.com, the domain is hosted in godaddy and the DNS records are managed in AMAZON route 53. i was told by myhosting support that i should create a PTR record on my DNS but i have read that in order to reverse DNS for an IP this record should be created in the ISP records wich sounds have sense. because if i want to get the domain name via an IP the request will never be forwarded to AMAZON instead it will ask the ISP for it am i rigth or MyHosting support is correct and i should setup PTR record on Amazon which i already did THANKS Oscar

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  • How would I setup reverse DNS for 2 email servers?

    - by Solignis
    I have an interesting DNS question (well interesting to me atleast). I just installed an hmail server in our remote office to act as an MX backup in the event our exchange server goes down. The 2 host names are mail.campbellsurvey.com mail2.campbellsurvey.com mail points to the address 98.XXX.91.XXX mail2 points to the address 70.XXX.190.XXX How would I setup a PTR record on the ISP end to reflect both hostnames? Does the PTR have to point to EXACTLY mail.campbellsurvey.com or can it point to just campbellsurvey.com? because right now anything passing through the primary static address in our pool (the one used for standard internet) is identified as mail.campbellsurvey.com. My only idea to fix this was to move the mail server to the next available address and give it only it the name mail.campbellsurvey.com but I wanted to see if there was another way. Thanks in advance.

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  • Help with Windows 7 BSOD with windbg minidump !analyze -v results

    - by Kurt Harless
    Hi gang, Windows 7 X64 Ultimate is BSODing occasionally. I suspect an overheating issue or something related to the use of my GTX-295 card that runs very hot. Here is an !analyze -v listing of the most recent minidump. Any and all help greatly appreciated. Kurt Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [C:\Windows\Minidump\122810-31387-01.dmp] Mini Kernel Dump File: Only registers and stack trace are available Symbol search path is: SRV*c:\websymbols*http://msdl.microsoft.com/download/symbols Executable search path is: Windows 7 Kernel Version 7600 MP (8 procs) Free x64 Product: WinNt, suite: TerminalServer SingleUserTS Built by: 7600.16617.amd64fre.win7_gdr.100618-1621 Machine Name: Kernel base = 0xfffff800`03065000 PsLoadedModuleList = 0xfffff800`032a2e50 Debug session time: Tue Dec 28 11:04:03.597 2010 (UTC - 7:00) System Uptime: 2 days 2:28:40.407 Loading Kernel Symbols ............................................................... ................................................................ .............................................. Loading User Symbols Loading unloaded module list ................ ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* Use !analyze -v to get detailed debugging information. BugCheck 3B, {c0000005, fffff800033b8873, fffff8800e322dc0, 0} Probably caused by : ntkrnlmp.exe ( nt!RtlCompareUnicodeStrings+c3 ) Followup: MachineOwner --------- 1: kd> !analyze -v ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* SYSTEM_SERVICE_EXCEPTION (3b) An exception happened while executing a system service routine. Arguments: Arg1: 00000000c0000005, Exception code that caused the bugcheck Arg2: fffff800033b8873, Address of the instruction which caused the bugcheck Arg3: fffff8800e322dc0, Address of the context record for the exception that caused the bugcheck Arg4: 0000000000000000, zero. Debugging Details: ------------------ EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s. FAULTING_IP: nt!RtlCompareUnicodeStrings+c3 fffff800`033b8873 488b7c2418 mov rdi,qword ptr [rsp+18h] CONTEXT: fffff8800e322dc0 -- (.cxr 0xfffff8800e322dc0) rax=0000000000000041 rbx=fffff8a015a3c1c0 rcx=0000000000000024 rdx=0000000000000003 rsi=fffff8800e3238b0 rdi=0000000000000009 rip=fffff800033b8873 rsp=fffff8800e323798 rbp=000000000000000d r8=fffff8a018cb374c r9=000000200a98fdc4 r10=fffff8800e323988 r11=fffff8800e32398e r12=fffff8a018127c18 r13=fffff8800126e550 r14=0000000000000001 r15=fffffa800abe1570 iopl=0 nv up ei pl nz ac po nc cs=0010 ss=0018 ds=002b es=002b fs=0053 gs=002b efl=00010216 nt!RtlCompareUnicodeStrings+0xc3: fffff800`033b8873 488b7c2418 mov rdi,qword ptr [rsp+18h] ss:0018:fffff880`0e3237b0=???????????????? Resetting default scope CUSTOMER_CRASH_COUNT: 1 DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT BUGCHECK_STR: 0x3B PROCESS_NAME: ccSvcHst.exe CURRENT_IRQL: 0 LAST_CONTROL_TRANSFER: from 0000000000000000 to fffff800033b8873 STACK_TEXT: fffff880`0e323798 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!RtlCompareUnicodeStrings+0xc3 FOLLOWUP_IP: nt!RtlCompareUnicodeStrings+c3 fffff800`033b8873 488b7c2418 mov rdi,qword ptr [rsp+18h] SYMBOL_STACK_INDEX: 0 SYMBOL_NAME: nt!RtlCompareUnicodeStrings+c3 FOLLOWUP_NAME: MachineOwner MODULE_NAME: nt IMAGE_NAME: ntkrnlmp.exe DEBUG_FLR_IMAGE_TIMESTAMP: 4c1c44a9 STACK_COMMAND: .cxr 0xfffff8800e322dc0 ; kb FAILURE_BUCKET_ID: X64_0x3B_nt!RtlCompareUnicodeStrings+c3 BUCKET_ID: X64_0x3B_nt!RtlCompareUnicodeStrings+c3 Followup: MachineOwner ---------

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  • DNS - domain conflict?

    - by Stefanos.Ioannou
    I was given two domains: domain.com & domain.info (they are on GoDaddy). And I was also given two servers, 107.105.38.99 - Rails app and 107.107.90.17 - Wordpress platform, on Digital Ocean. At first, I was instructed to associate domain.com with the 107.107.38.99 (Rails app). Then I was instructed to de-associate this IP with domain.com and associated the 107.107.90.17 with the domain name domain.com. Then I was instructed to associated domain.info with the 107.107.38.99 (Rails app). Right now, when I go to domain.com the WordPress platform (107.107.90.17) loads fine and that is what is expected. But when I go to domain.info for the Rails app (107.107.38.99) I get redirected to domain.com. This is not expected and this is really weird for me. When I ping domain.info I get this: PING domain.info (107.107.38.99): 56 data bytes 64 bytes from 107.107.38.99: icmp_seq=0 ttl=50 time=74.601 ms Which is the expected result showing the correct IP but I don't understand why I get redirected to domain.com...(which when I ping is:) domain 64 bytes from 107.107.90.17: icmp_seq=0 ttl=50 time=75.057 ms The PTR Records on Digital Ocean are as follows: IP Address PTR Record 107.107.38.99 domain.info. 107.107.90.17 domain.com. and the DNS configurations on Digital Ocean are: domain.com A: @ 107.107.90.17 CNAME: * @ domain.info A: @ 107.107.38.99 CNAME: * @ I am not sure what the issue is, if you have any clue please let me know, I will be really grateful. If you need any other info let me know.

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  • b Is it bad to have the Reverse DNS for two IPs point to the same domain name?

    - by Daniel Vandersluis
    I am in the process of setting up a new server for my web application (the site will be moved, it is not for load balancing or the like), which has a different IP address from my existing server. My current server has a reverse DNS PTR record set up pointing its IP to mydomain.com. Is it bad to set up a reverse DNS PTR record for the new IP pointing to mydomain.com as well? Or should I wait until I do my migration to set up the record? Update: I forgot to mention, the A record for the mydomain.com points to the old server's IP address, not the new one, if it matters.

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  • SMTP host name vs. domain in "From:" address vis-a-vis Email Deliverability

    - by Jared Duncan
    I'm trying to implement (or make sure that I'm correctly following) email sending best practices to improve deliverability, but the role of the smtp server's host name vs the domain name of the From: email address seems to be unclear, even after reading dozens of people's articles/input. Specifically, I understand that to satisfy the reverse DNS check, there must be a PTR record for the IP address of the sending machine that yields a domain name that matches the host name of the sending machine / SMTP server. Some say it needs to match the one given by the "hostname" command, most say it's the one provided with the HELO / EHLO statement, and this guy even says they MUST be the same (according to / enforced by what, I don't know; that's only a minor point of confusion, anyhow). First, what I can't find anywhere is whether or not the domain name of the From: email address needs to match the domain name of the SMTP server. So in my case, I have a VPS with linode. It primarily hosts a particular domain of mine, example.com, but I also sometimes do work on other projects: foo.com and bar.com. So what I'm wondering is if I can just leave the default linode PTR record (which resolves to abc.def.linode.com), make sure that abc.def.linode.com is what my mail server (qmail) is configured to say at HELO, and then proceed to use it to send out emails for example.com, foo.com, et al. If so, then I am confused by the advice given here, specifically (in a listing of bad case scenarios): No SPF record for the domain being used in the HELO command Why would THAT domain need an SPF record? And if it does, which domain should it provide whitelisting for: the HELO domain, or the domain of the From: email address (envelope sender)? Also, which domain would need to accept mail sent to [email protected]? If the domains must be the same, that would seem rather limiting to me, because then for every domain you wanted to send email from, you'd have to get another IP address for it. It would also compromise or ruin one's ability to do non-email sending things (e.g. wget) relatively anonymously. However, the upside--if this is the case--is that it would make for a far less confusing setup. I'm currently using the linode.com SMTP+PTR domain and example.com From: address combination without much of any deliverability issue, but my volume is very low and I'd like to know if someone out there has experience with larger volumes and has specifically tested the difference and/or has inside knowledge and/or has an authoritative answer (and source) for this particular question. I'm happy to clarify anything, let me know. Thanks in advance.

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  • Bind: dns not 'spreaded'

    - by realtebo
    I've elfoip.net with bind $ whois elfoip.net | grep 'Name Server' Name Server: NS.ELFOIP.NET I need elfoip.net be able to serve third levels domain, like mickymouse.elfoip.net, etc... Yes, I'm trying to create an other useless dyndns clone. i've added some third level as A RR. Eg: executing this from the server itself $ dig @localhost mattinauno.elfoip.net ;; ANSWER SECTION: mattinauno.elfoip.net. 60 IN A 192.81.221.113 I was expecting in one or two days, from my pc i can digit in browser mattinauno.elfoip.net and get page a 192.81.221.113 But this is not happening. Are there any prerequisites to satisfy to allow dns of my isp to be able to forward dns resolution of *.elfoip.net to MY dns ? (Or to ask to him and then cache ?) TTL of zone is set a 5m I've not AllowQuey directive, is it necessary for other dns to cache from mine ? I've cheched the zone with bind utility named-checkzone but no error detected. How to diagnose why other dns doesn't take in account RR from mine ? from my home pc dig @ns.elfoip.net mattinauno.elfoip.net ;; ANSWER SECTION: mattinauno.elfoip.net. 60 IN A 192.81.221.113 ;; AUTHORITY SECTION: elfoip.net. 300 IN NS ns.elfoip.net. but dig @8.8.8.8 mattinauno.elfoip.net give no answers Whole zone file: note I've used nsupdate, so this file has been re-edited and re-formatted from this utility ! root@mirko:/var/named# cat elfoip.net.db $ORIGIN . $TTL 300 ; 5 minutes elfoip.net IN SOA ns.elfoip.net. hostmaster.elfoip.net. ( 2013062314 ; serial 3600 ; refresh (1 hour) 600 ; retry (10 minutes) 86400 ; expire (1 day) 60 ; minimum (1 minute) ) NS ns.elfoip.net. A 109.168.99.6 $ORIGIN elfoip.net. $TTL 60 ; 1 minute google A 173.194.35.56 maiscai A 192.81.221.113 mattinadue A 192.81.221.113 mattinauno A 192.81.221.113 $TTL 300 ; 5 minutes ns A 109.168.99.6 $TTL 60 ; 1 minute prova A 208.67.222.222 prova2 A 13.23.34.45 A 13.23.34.46 www CNAME elfoip.net. EDIT: added named.conf.local zone "elfoip.net" { type master; // file "/etc/bind/elfoip.net.db"; file "/var/named/elfoip.net.db"; allow-update { key elfoip.net ; }; }; EDIT: I've no setup list-on directive *EDIT Added a TCPDUMP after [email protected] wwww.elfoip.net from a machine which uses my company internal dns, who allow recursive query. root@mirko:~# tcpdump -i eth0 'port 53' tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes 11:57:23.293611 IP host9-210-static.22-87-b.business.telecomitalia.it.45958 > mirko.elfoip.net.domain: 61337+ A? www.elfoip.net. (32) 11:57:23.294114 IP mirko.elfoip.net.domain > host9-210-static.22-87-b.business.telecomitalia.it.45958: 61337* 2/1/1 CNAME elfoip.net., A 109.168.99.6 (95) 11:57:23.294554 IP mirko.elfoip.net.59571 > google-public-dns-a.google.com.domain: 45851+ PTR? 9.210.22.87.in-addr.arpa. (42) 11:57:23.330444 IP google-public-dns-a.google.com.domain > mirko.elfoip.net.59571: 45851 1/0/0 PTR host9-210-static.22-87-b.business.telecomitalia.it. (106) 11:57:23.331181 IP mirko.elfoip.net.44171 > google-public-dns-a.google.com.domain: 33339+ PTR? 8.8.8.8.in-addr.arpa. (38) 11:57:23.439405 IP google-public-dns-a.google.com.domain > mirko.elfoip.net.44171: 33339 1/0/0 PTR google-public-dns-a.google.com. (82) 11:57:31.350654 IP host9-210-static.22-87-b.business.telecomitalia.it.30108 > mirko.elfoip.net.domain: 38269 [1au] A? ns.elfoip.net. (42) 11:57:31.351117 IP mirko.elfoip.net.domain > host9-210-static.22-87-b.business.telecomitalia.it.30108: 38269* 1/1/1 A 109.168.99.6 (72) If i dig @8.8.8.8 www.elfoip.net, NOTHING happens in dump log !

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  • SMTP for multiple domains on virtual interfaces

    - by Pawel Goscicki
    The setup is like this (Ubuntu 9.10): eth0: 1.1.1.1 name.isp.com eth0:0 2.2.2.2 example2.com eth0:1 3.3.3.3 example3.com example2.com and example3.com are web apps which need to send emails to their users. 2.2.2.2 points to example2.com and vice-versa (A/PTR). MX - Google. Google handles all incoming mail. 3.3.3.3 points to example3.com and vice-versa (A/PTR). MX - Google. Google handles all incoming mail. Requirements: Local delivery must be disabled (must deliver to MX specified server), so that the following works (note that there is no local user bob on the machine, but there is an existing bob email user): echo "Test" | mail -s "Test 6" [email protected] I need to be able to specify from which IP/domain name the email is delivered when sending an email. I fought with sendmail. With not much luck. Here's some debug info: sendmail -d0.12 -bt < /dev/null Canonical name: name.isp.com UUCP nodename: host a.k.a.: example2.com a.k.a.: example3.com ... Sendmail always uses canonical name (taken from eth0). I've found no way for it to select one of the UUCP codenames. It uses it for sending email: echo -e "To: [email protected]\nSubject: Test\nTest\n" | sendmail -bm -t -v [email protected]... Connecting to [127.0.0.1] via relay... 220 name.isp.com ESMTP Sendmail 8.14.3/8.14.3/Debian-9ubuntu1; Wed, 31 Mar 2010 16:33:55 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1] >>> EHLO name.isp.com I'm ok with other SMTP solutions. I've looked briefly at nbsmtp, msmtp and nullmailer but I'm not sure thay can deal with disabling local delivery and selecting different domains when sending emails. I also know about spoofing sender field by using mail -a "From: <[email protected]>" but it seems to be a half-solution (mails are still sent from isp.com domain instead of proper example2.com, so PTR records are unused and there's more risk of being flagged as spam/spammer).

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  • Marshalling the value of a char* ANSI string DLL API parameter into a C# string

    - by Brian Biales
    For those who do not mix .NET C# code with legacy DLL's that use char* pointers on a regular basis, the process to convert the strings one way or the other is non-obvious. This is not a comprehensive article on the topic at all, but rather an example of something that took me some time to go find, maybe it will save someone else the time. I am utilizing a third party too that uses a call back function to inform my application of its progress.  This callback includes a pointer that under some circumstances is a pointer to an ANSI character string.  I just need to marshal it into a C# string variable.  Seems pretty simple, yes?  Well, it is, (as are most things, once you know how to do them). The parameter of my callback function is of type IntPtr, which implies it is an integer representation of a pointer.  If I know the pointer is pointing to a simple ANSI string, here is a simple static method to copy it to a C# string: private static string GetStringFromCharStar(IntPtr ptr) {     return System.Runtime.InteropServices.Marshal.PtrToStringAnsi(ptr); } The System.Runtime.InteropServices is where to look any time you are mixing legacy unmanaged code with your .NET application.

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  • DNS NS and domain clarification

    - by thejartender
    I am really trying to get my home web server up and I don't seem to be succeeding. My web server withing my host system is running my web application and is viewable at the current isp ip 88.89.190.171 over WAN indicating that the webapp is fine and that router ports are forwarded. I have set up a DNS on this system with a single name server in the network and I manage to ping it with ping ns.thejarbar.org I have registered this private name server at my current hosting provider. My domain (thejarbar.org) is obviously registered and I have pointed it to my name server. My question here is if it is simply a matter of waiting on propagation for me to be able to ping my domain? Another way of asking this is if the fact that my name server is discoverable indicates that I have set it up correctly to be used? I have tested with dig and dig -x on my host and have A records for the name server. The server is not the Authorative server so I am concerned that this may be the reason why my site is not discoverable. Is there anything else I may need to so still? I only have one ns. currently, but should this succeed I will be purchasing a more stable secondary system to host my development applications. This is my best chance at getting work (freelance development) due to illness) and this I feel is the last step I need to succeed. Please note that this is temporarily a home server and I will most likely be using it as part of a professional setup very soon I will likely have to repeat this question therefore in a prefessional context in a few weeks as nothing will be different other than the fact that I am going to have a server running elsewhere. I am using bind9 and Ubuntu 12.10 and my records are: $TTL 3D @ IN SOA ns.thejarbar.org. email. ( 13112012 28800 3600 604800 38400 ); thejarbar.org. IN A 10.0.0.42 @ IN NS ns.thejarbar,org. yuccalaptop IN A 10.0.0.19 ns IN A 10.0.0.42 gw IN A 10.0.0.138 www IN CNAME thejarbar.org. $TTL 3D 0.0.10.in-addr.arpa. IN SOA ns.thejarbar.org. email. ( 13112012 28800 3600 604800 38400 ); 0.0.10.in-addr.arpa. IN NS ns.thejarbar.org. 42 IN PTR thejarbar.org. 19 IN PTR yuccalaptop.thejarbar.org. 138 IN PTR gw.thejarbar.org. My localhost IP is 10.0.0.42 I wish for this to be my host and name server.

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  • "IP May Be Forged" - Sendmail Warning

    - by Mikey B
    CentOS 5.x | SendMail 8 Can I get clarification on what exactly the warning "IP may be forged" means and what conditions cause it? I recently configured SendMail to relay email from my exchange server and it's showing that warning in the logs. The messages get delivered fine but I don't like the warnings. I originally thought that there was an inconsistency between the servername used in the EHLO statement from Exchange and the respective PTR record for the source IP for Exchange. But upon examining a packet capture, I see exchange using "EHLO domain.com" and that the source IP has a PTR of "domain.com". Maybe sendmail doesn't like that the greeting only has the domain? -M

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  • Draw contour around object in Opengl

    - by Maciekp
    I need to draw contour around 2d objects in 3d space. I tried drawing lines around object(+points to fill the gap), but due to line width, some part of it(~50%) was covering object. I tried to use stencil buffer, to eliminate this problem, but I got sth like this(contour is green): http://goo.gl/OI5uc (sorry I can't post images, due to my reputation) You can see(where arrow points), that some parts of line are behind object, and some are above. This changes when I move camera, but always there is some part, that is covering it. Here is code, that I use for drawing object: glColorMask(1,1,1,1); std::list<CObjectOnScene*>::iterator objIter=ptr->objects.begin(),objEnd=ptr->objects.end(); int countStencilBit=1; while(objIter!=objEnd) { glColorMask(1,1,1,1); glStencilFunc(GL_ALWAYS,countStencilBit,countStencilBit); glStencilOp(GL_REPLACE,GL_KEEP,GL_REPLACE ); (*objIter)->DrawYourVertices(); glStencilFunc(GL_NOTEQUAL,countStencilBit,countStencilBit); glStencilOp(GL_KEEP,GL_KEEP,GL_REPLACE); (*objIter)->DrawYourBorder(); ++objIter; ++countStencilBit; } I've tried different settings of stencil buffer, but always I was getting sth like that. Here is question: 1.Am I setting stencil buffer wrong? 2. Are there any other simple ways to create contour on such objects? Thanks in advance.

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  • How to alter image pixels of a wild life bird?

    - by NoobScratcher
    Hello so I was hoping someone knew how to move or change color and position actual image pixels and could explain and show the code to do so. I know how to write pixels on a surface or screen-surface usigned int *ptr = static_cast <unsigned int *> (screen-pixels); int offset = y * (screen->pitch / sizeof(unsigned int)); ptr[offset + x] = color; But I don't know how to alter or manipulate a image pixel of a png image my thoughts on this was How do I get the values and locations of pixels and what do I have to write to make it happen? Then how do I actually change the values or locations of those gotten pixels and how do I make that happen? any ideas tip suggestions are also welcome! int main(int argc , char *argv[]) { SDL_Surface *Screen = SDL_SetVideoMode(640,480,32,SDL_SWSURFACE); SDL_Surface *Image; Image = IMG_Load("image.png"); bool done = false; SDL_Event event; while(!done) { SDL_FillRect(Screen,NULL,(0,0,0)); SDL_BlitSurface(Image,NULL,Screen,NULL); while(SDL_PollEvent(&event)) { switch(event.type) { case SDL_QUIT: return 0; break; } } SDL_Flip(Screen); } return 0; }

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  • Draw contour around object in Opengl

    - by Maciekp
    I need to draw contour around 2d objects in 3d space. I tried drawing lines around object(+points to fill the gap), but due to line width, some part of it(~50%) was covering object. I tried to use stencil buffer, to eliminate this problem, but I got sth like this(contour is green): http://goo.gl/OI5uc (sorry I can't post images, due to my reputation) You can see(where arrow points), that some parts of line are behind object, and some are above. This changes when I move camera, but always there is some part, that is covering it. Here is code, that I use for drawing object: glColorMask(1,1,1,1); std::list<CObjectOnScene*>::iterator objIter=ptr->objects.begin(),objEnd=ptr->objects.end(); int countStencilBit=1; while(objIter!=objEnd) { glColorMask(1,1,1,1); glStencilFunc(GL_ALWAYS,countStencilBit,countStencilBit); glStencilOp(GL_REPLACE,GL_KEEP,GL_REPLACE ); (*objIter)->DrawYourVertices(); glStencilFunc(GL_NOTEQUAL,countStencilBit,countStencilBit); glStencilOp(GL_KEEP,GL_KEEP,GL_REPLACE); (*objIter)->DrawYourBorder(); ++objIter; ++countStencilBit; } I've tried different settings of stencil buffer, but always I was getting sth like that. Here is question: 1.Am I setting stencil buffer wrong? 2. Are there any other simple ways to create contour on such objects? Thanks in advance. EDIT: 1. I don't have normals of objects. 2. Object can be concave. 3. I can't use shaders(see below why).

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  • ssh, "Last Login", `last` and OS X

    - by allentown
    I have hit the googles as much as I can on this, being specific to OS X, I am not finding an answer. Nothing is wrong, but curiosity levels are high. $ssh [email protected] Password: Last login: Wed Apr 7 21:28:03 2010 from my-laptop.local ^lonely tylenol^ Line 1 is my command line 2 is the shell asking for the password line 3 is where my question comes from line 4 comes out of /etc/motd I can find nothing in ~/ of an of the .bash* files that contains the string "Last Login", and would like to alter it. It performs some type of hostname lookup, which I can not determine. If I ssh to another host: $ssh [email protected] Last login: Wed Apr 7 21:14:51 2010 from 123-234-321-123-some.cal.isp.net.example hi there, you are on box 456 line 1 is my command line 2 is again, where my question comes from line 3 is from /etc/motd *The dash'd IP address is not reversed On this remote host, I have ~/.ssh and it's corresponding keys set up, so there was no password request Where is the "Last Login:" coming from, where does the date stamp come from, and most importantly, where does the hostname come from? While on [email protected] (box 456) $echo hostname remote.location.example456.com Or with dig, to make sure I have rDNS/PTR set up, for which I am not authoritative, but my ISP has correctly set... $dig -x 123.234.321.123 PTR remote.location.example456.com or $dig PTR 123.321.234.123.in-addr.arpa. +short remote.location.example456.com. my previous hostname used to be 123-234-321-123-some.cal.isp.net.example, which I set with hostname -s remote.location.example456.com, because it was obnoxious to see such a long name. That solves the value of $echo hostname which now returns remote.location.example456.com. Mac OS X, 10.6 is this case, does seem to honor: touch ~/.hushlogin If leave that file empty, I get nothing on the shell when I login. I want to know what controls the host resolution of the IP, and how it is all working. For example, running last reports a huge list of my logins, which have obtusely long hostnames, when they would be preferable to just be remote.location.example456.com. More confusing to me, reading the man page for wtmp and lastlog, it looks like lastlog is not used on OS X, /var/log/lastlog does not exist. Actually, none of these exist on 10.5 or 10.6: /var/run/utmp The utmp file. /var/log/wtmp The wtmp file. /var/log/lastlog The lastlog file. If I am to assume that the system is doing some kind of reverse lookup, I certainly do not know what it is, as it is not an accurate one.

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  • Is there a good way to convert between BitmapSource and Bitmap?

    - by JohannesH
    As far as I can tell the only way to convert from BitmapSource to Bitmap is through unsafe code... Like this (from Lesters WPF blog): myBitmapSource.CopyPixels(bits, stride, 0); unsafe { fixed (byte* pBits = bits) { IntPtr ptr = new IntPtr(pBits); System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap( width, height, stride, System.Drawing.Imaging.PixelFormat.Format32bppPArgb,ptr); return bitmap; } } To do the reverse: System.Windows.Media.Imaging.BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( bitmap.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions()); Is there an easier way in the framework? And what is the reason it isn't in there (if it's not)? I would think it's fairly usable. The reason I need it is because I use AForge to do certain image operations in an WPF app. WPF wants to show BitmapSource/ImageSource but AForge works on Bitmaps.

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  • directshow Renderstream fails with grayscale bitmaps

    - by Roey
    Hi all. I'm trying to create a directshow graph to playback a video composed of 8bit grayscale bitmaps. (using directshow.net.) I'm using a source filter and the vmr9 renderer. The source filter's output pin is defined using the following code : bmi.Size = Marshal.SizeOf(typeof(BitmapInfoHeader)); bmi.Width = width; bmi.Height = height;; bmi.Planes = 1; bmi.BitCount = (short)bitcount; bmi.Compression = 0; bmi.ImageSize = Math.Abs(bmi.Height) * bmi.Width * bmi.BitCount / 8; bmi.ClrUsed = bmi.BitCount <= 8 ? 256 : 0; bmi.ClrImportant = 0; //bmi.XPelsPerMeter = 0; //bmi.YPelsPerMeter = 0; bool isGrayScale = bmi.BitCount <= 8 ? true : false; int formatSize = Marshal.SizeOf(typeof(BitmapInfoHeader)); if (isGrayScale == true) { MessageWriter.Log.WriteTrace("Playback is grayscale."); /// Color table holds an array of 256 RGBQAD values /// Those are relevant only for grayscale bitmaps formatSize += Marshal.SizeOf(typeof(RGBQUAD)) * bmi.ClrUsed; } IntPtr ptr = Marshal.AllocHGlobal(formatSize); Marshal.StructureToPtr(bmi, ptr, false); if (isGrayScale == true) { /// Adjust the pointer to the beginning of the /// ColorTable address and create the grayscale color table IntPtr ptrNext = (IntPtr)((int)ptr + Marshal.SizeOf(typeof(BitmapInfoHeader))); for (int i = 0; i < bmi.ClrUsed; i++) { RGBQUAD rgbCell = new RGBQUAD(); rgbCell.rgbBlue = rgbCell.rgbGreen = rgbCell.rgbRed = (byte)i; rgbCell.rgbReserved = 0; Marshal.StructureToPtr(rgbCell, ptrNext, false); ptrNext = (IntPtr)((int)ptrNext + Marshal.SizeOf(typeof(RGBQUAD))); } } This causes Renderstream to return "No combination of intermediate filters could be found to make the connection." Please help! Thanks.

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  • Converting C# void* to byte[]

    - by Yurik
    In C#, I need to write T[] to a stream, ideally without any additional buffers. I have a dynamic code that converts T[] (where T is a no-objects struct) to a void* and fixes it in memory, and that works great. When the stream was a file, I could use native Windows API to pass the void * directly, but now I need to write to a generic Stream object that takes byte[]. Can anyone suggest a hack way to create a dummy array object which does not actually have any heap allocations, but rather points to an already existing (and fixed) heap location. This is the pseudo-code that I need: void Write(Stream stream, T[] buffer) { fixed( void* ptr = &buffer ) // done with dynamic code generation { int typeSize = sizeof(T); // done as well byte[] dummy = (byte[]) ptr; // <-- how do I create this fake array? stream.Write( dummy, 0, buffer.Length*typeSize ); } }

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  • x86 Assembly Question about outputting

    - by jdea
    My code looks like this _declspec(naked) void f(unsigned int input,unsigned int *output) { __asm{ push dword ptr[esp+4] call factorial pop ecx mov [output], eax //copy result ret } } __declspec(naked) unsigned int factorial(unsigned int n) { __asm{ push esi mov esi, dword ptr [esp+8] cmp esi, 1 jg RECURSE mov eax, 1 jmp END RECURSE: dec esi push esi call factorial pop esi inc esi mul esi END: pop esi ret } } Its a factorial function and I'm trying to output the answer after it recursively calculates the number that was passed in But what I get returned as an output is the same large number I keep getting Not sure about what is wrong with my output, by I also see this error CXX0030: Error: expression cannot be evaluated Thanks!

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  • Open Cl.I just need to convert the code to using two work items in the for loop .Currentlly it uses one

    - by user1660282
    spmv_csr_scalar_kernel(const int num_rows , const int * ptr , const int * indices , const float * data , const float * x, float * y) { int row = get_global_id(0); if(row < num_rows) { float dot = 0; int row_start = ptr[row]; int row_end = ptr[row+1]; for (int jj = row_start; jj < row_end; jj++) { dot += data[jj] * x[indices[jj]]; } y[row] += dot; } } Above is the Open Cl code for multiplying a sparse matrix in CSR format with a Column vector.It uses one global work item per for loop.Can anybody help me in using two work items in each for loop.I am new to open cl and get a lot of issues if I modify even the smallest thing.Please help me.This a part of my project.I made it this parallel but I wanna make it more parallel.Please help me if you can.plzzzz A single work item executes the for loop from row_start to row_end.I want that this row or for loop is further divided into two parts each executed by a single work item.How do I go on accomplishing that? This is what I could come up with but its returning the wrong output.plzz help __kernel void mykernel(__global int* colvector,__global int* val,__global int* result,__global int* index,__global int* rowptr,__global int* sync) { __global int vals[8]={0,0,0,0,0,0,0,0}; for(int i=0;i<4;i++) { result[i]=0; } barrier(CLK_GLOBAL_MEM_FENCE); int thread_id=get_global_id(0); int warp_id=thread_id/2; int lane=(thread_id)&1; int row=warp_id; if(row<4) { int row_start = rowptr[row]; int row_end = rowptr[row+1]; vals[thread_id]=0; for (int i = row_start+lane; i<row_end; i+=2) { vals[thread_id]+=val[i]*colvector[index[i]]; } vals[thread_id]+=vals[thread_id+1]; if(lane==0){ result[row] += vals[thread_id]; } } }

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  • C2664 when casting child class to templated parent class

    - by DC
    I have a parent class which is templated, and a child class which implements it. template< typename T1, typename T2> class ParentClass{ . . . }; class ChildClass : public ParentClass<MyT1, MyT2> { . . . }; And I want to have a pointer which I can use polymorphically: ParentClass<T1, T2>* ptr; ptr = static_cast<ParentClass<MyT1, MyT2>* >(new ChildClass() ); No matter how I cast it, I always get a C2664 which has the same expression: error C2664: cannot convert parameter 1 from 'ParentClass< T1,T2 *' to 'ParentClass< T1,T2 *' Is it not possible to cast pointer types between inherited types if the parent is templated, even if the types specified in the templates are the same?

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  • Socket programming question

    - by dfddf
    I am given the following declaration: char inbuff[500], *ptr; int n, bufferlen; Write a program segement to receive a message having 500 bits from the TCP socket sock and store this message in inbuff. My answer is: n = recv( sock, inbuff, strlen( inbuff ), 0 ); However, I am not sure why *ptr is given in the declaration. So, I would like ask, what is the purpose of the pointer in this question?? Or my program segement is wrong? Thank you for all of yours help first!

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