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| C/C++ Set USERID_DATA |
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| ratzrattillo |
 Posted: Mon Jan 29, 2018 1:17 pm Post subject: C/C++ Set USERID_DATA |
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Guest
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Hello,
i am trying to set Username and Password via the C and C++ API in the same way, like the MQ-Explorer does, when selecting the user identification compatibility mode when connecting to a Remote Queue Manager. However, so far i have not found a way to do this. When capturing the traffic between my program and the Queue Manager, my program always uses the current Windows User. I cannot find any way how to send custom username and password in the USERID_DATA field (as it is displayed in wireshark)
How can i solve this. I am going through documentation since 2 days!
Thank you for your help! |
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| gbaddeley |
| Posted: Mon Jan 29, 2018 2:46 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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Search for MQCSP, a structure that can be passed on MQ connection. I can provide example code in C.
_________________
Glenn |
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| ratzrattillo |
| Posted: Tue Jan 30, 2018 11:46 am Post subject: C and C++ Connect Codes |
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Guest
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Hello Glenn and other readers,
I try to use the CSP Option, but i have not been successful so far.
I use the following Code Snippets in C and C++:
C:
| Code: |
//#pragma comment(lib, "mqic.lib")
#include <cmqc.h>
#include <cmqxc.h>
#include <string.h>
#include <stdio.h>
int main(int argc, char **argv) {
MQHCONN HConn;
MQLONG CompCode;
MQLONG Reason;
MQCNO ConnectOptions = { MQCNO_DEFAULT };
MQCD ClientConn = { MQCD_CLIENT_CONN_DEFAULT };
MQCSP ClientSecurityParameters = { MQCSP_DEFAULT };
MQCHAR QMName[MQ_Q_MGR_NAME_LENGTH] = "QM_TEST";
MQCHAR channelName[MQ_CHANNEL_NAME_LENGTH + 1] = "SYSTEM.ADMIN.SVRCONN";
MQCHAR hostname[MQ_CONN_NAME_LENGTH + 1] = "192.168.1.20(1414)";
MQCHAR password[MQ_PASSWORD_LENGTH + 1] = "";
MQCHAR username[MQ_USER_ID_LENGTH + 1] = "Y";
strncpy_s(QMName, MQ_Q_MGR_DESC_LENGTH, QMName, strlen(QMName));
strncpy_s(ClientConn.ConnectionName, MQ_CONN_NAME_LENGTH, hostname, strlen(hostname));
strncpy_s(ClientConn.ChannelName, MQ_CHANNEL_NAME_LENGTH, channelName, strlen(channelName) - 1);
strncpy_s(ClientConn.QMgrName, MQ_Q_MGR_NAME_LENGTH, QMName, strlen(QMName));
ClientSecurityParameters.AuthenticationType = MQCSP_AUTH_USER_ID_AND_PWD;
ClientSecurityParameters.CSPUserIdPtr = (MQPTR)username;
ClientSecurityParameters.CSPUserIdLength = (MQLONG)strlen(username) - 1;
ClientSecurityParameters.CSPPasswordPtr = (MQPTR)password;
ClientSecurityParameters.CSPPasswordLength = (MQLONG)strlen(password) - 1;
ConnectOptions.ClientConnPtr = &ClientConn;
ConnectOptions.SecurityParmsPtr = &ClientSecurityParameters;
MQCONNX(QMName, &ConnectOptions, &HConn, &CompCode, &Reason);
printf("QMName: %s\n", QMName);
printf("Hostname: %s\n", hostname);
printf("ChannelName: %s\n", channelName);
printf("Reason: %ld\n", Reason);
printf("CompCode: %ld\n", CompCode);
return CompCode;
}
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C++:
| Code: |
//#pragma comment(lib, "imqc23vn.lib")
//#pragma comment(lib, "imqb23vn.lib")
#include <imqi.hpp>
#include <cmqc.h>
#include <string.h>
#include <stdio.h>
int main(int argc, char **argv) {
ImqQueueManager *pmanager = new ImqQueueManager;
ImqChannel *pchannel = new ImqChannel;
ImqBoolean ret = 0;
//ImqAuthenticationRecord *pauthrec = new ImqAuthenticationRecord;
//pauthrec->setPassword("");
//pauthrec->setUserName("Y");
//pauthrec->setConnectionName("192.168.1.20(1414)");
//pauthrec->setType(MQAIT_ALL);
//pauthrec->setConnectionReference(pmanager);
if (ret = pchannel->setHeartBeatInterval(1))
printf("setHeartBeatInterval %d\n", ret);
if (ret = pchannel->setTransportType(MQXPT_TCP))
printf("setTransportType returned %d\n", ret);
if (ret = pchannel->setChannelName("SYSTEM.ADMIN.SVRCONN"))
printf("setChannelName returned %d\n", ret);
if (ret = pchannel->setConnectionName("192.168.1.20(1414)"))
printf("setConnectionName returned %d\n", ret);
if (ret = pchannel->setUserId("Y"))
printf("setUserId returned %d\n", ret);
if (ret = pchannel->setPassword(""))
printf("setPassword returned %d\n", ret);
if (ret = pmanager->setChannelReference(pchannel))
printf("setChannelReference returned %d\n", ret);
if (ret = pmanager->setName("QM_TEST"))
printf("setName returned %d\n", ret);
pmanager->setAuthenticationType(MQCSP_AUTH_USER_ID_AND_PWD);
if (ret = pmanager->setUserId("Y"))
printf("setUserId returned %d\n", ret);
if (ret = pmanager->setAlternateUserId("Y"))
printf("setAlternateUserId returned %d\n", ret);
if (ret = pmanager->setPassword(""))
printf("setPassword returned %d\n", ret);
if (pmanager->connect()) {
printf("The queue manager name is %s.\n", (char *)pmanager->name());
}
else {
printf("ImqQueueManager::connect failed with reason code %ld\n", pmanager->reasonCode());
delete pchannel;
}
}
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When i connect using Websphere MQ Explorer with the following settings, the authentication works just fine:
[img]
https://image.ibb.co/fGhJER/Websphere_MQ_UID_Compatibility_Mode_Connect_Settings.jpg
[/img]
[img]
https://image.ibb.co/jMKtg6/Websphere_MQ_UID_Compatibility_Mode_Connect.jpg
[/img]
However, when trying to do so with the C++ or C API for example, the Wireshark Log looks like this and i get an Error 2035:
[img]
https://image.ibb.co/gqiTg6/Websphere_MQ_UID_C_Connect.jpg
[/img]
[img]
https://image.ibb.co/n0PjM6/Websphere_MQ_UID_C_Connect_CONNINFO.jpg
[/img]
Could you please show me, how you would connect to a QM which is only accepting connections using the compatiblity mode (in C or C++)?
Best regards! |
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| markt |
| Posted: Tue Jan 30, 2018 11:52 am Post subject: |
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Knight
Joined: 14 May 2002
Posts: 508
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ConnectOptions.Version = MQCNO_VERSION_5;
see amqsput0.c et al. |
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| gbaddeley |
| Posted: Tue Jan 30, 2018 2:45 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| markt wrote: |
ConnectOptions.Version = MQCNO_VERSION_5;
see amqsput0.c et al. |
Correct.
| Code: |
ClientSecurityParameters.CSPUserIdLength = (MQLONG)strlen(username) - 1;
ClientSecurityParameters.CSPPasswordLength = (MQLONG)strlen(password) - 1; |
Why are you subtracting 1?
| Code: |
| MQCHAR channelName[MQ_CHANNEL_NAME_LENGTH + 1] = "SYSTEM.ADMIN.SVRCONN"; |
Don't use this channel for your own apps. Define a new SVRCONN channel with appropriate attribute settings.
_________________
Glenn |
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| ratzrattillo |
| Posted: Mon Nov 12, 2018 2:21 pm Post subject: |
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Guest
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Thank you for your help so far!
I retried it again today and connecting to a local queue manager still does not work with my program (even after adjusting it according to gbaddeley's sugestions).
However, it seems to work with the precompiled amqsputc0.c example. I did not notice any difference between the amqsputc code and my code. So i compiled amqsputc0.c with Visual Studio 2017, but eventhough the program compiles successfully, it does not work. I always get the following error message:
| Code: |
Sample AMQSPUT0 start
MQCONNX ended with reason code 2058
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However, the precompiled sample works just fine. Do you have any idea, why this behaviour might appear? Can it bee a compiler issue? Can you reproduce this behaviour?
Greetings! |
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| hughson |
| Posted: Mon Nov 12, 2018 2:42 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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| ratzrattillo wrote: |
Thank you for your help so far!
I retried it again today and connecting to a local queue manager still does not work with my program (even after adjusting it according to gbaddeley's sugestions).
However, it seems to work with the precompiled amqsputc0.c example. I did not notice any difference between the amqsputc code and my code. So i compiled amqsputc0.c with Visual Studio 2017, but eventhough the program compiles successfully, it does not work. I always get the following error message:
| Code: |
Sample AMQSPUT0 start
MQCONNX ended with reason code 2058
|
However, the precompiled sample works just fine. Do you have any idea, why this behaviour might appear? Can it bee a compiler issue? Can you reproduce this behaviour?
Greetings! |
Which library are you linking with? mqm or mqic?
Are you intending to connect as a client or as local connection?
MQRC_Q_MGR_NAME_ERROR (2058) when you are making a local connection just means you typed in your queue manager name wrong.
However, with a client connection, it means that it is trying to use the CCDT and could not find the queue manager name in any record in the CCDT.
Perhaps you could tell us the name of your queue manager, and the answers to the above question, and show us how you are invoking your application?
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| gbaddeley |
| Posted: Mon Nov 12, 2018 3:07 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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Try running MQ trace. It will show what is happening in the connection. Compare trace of the 2 programs.
_________________
Glenn |
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| ratzrattillo |
| Posted: Tue Nov 13, 2018 5:48 am Post subject: |
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Guest
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Thank you very much for your help. It seems to have been a linker issue!
The samples now work perfectly. However, i do not yet understand how to connect to a remote queue manager. How do i have to configure the QueueManager and its channel to not get the following error:
| Code: |
PS C:\Program Files\IBM\MQ\Tools\cplus\Samples\Bin64\vn> .\imqsputc.exe DE.RATZ.QUEUE QMTEST DE.RATZ.CHANNEL/tcp/localhost(1414)
Sample IMQSPUT start
ImqQueueManager::connect ended with reason code 2035 |
It seems like credentials are needed for my newly created Channel, but how do i add them?
Greetings! |
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| bruce2359 |
| Posted: Tue Nov 13, 2018 7:16 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| ratzrattillo wrote: |
| Thank you very much for your help. It seems to have been a linker issue! |
For the benefit of others, Please explain what you did to correct this. What did you change?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| ratzrattillo |
| Posted: Tue Nov 13, 2018 7:57 am Post subject: |
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Guest
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I was having a misconfiguration in my Visual Studio project settings where i was linking to old/maybe wrong version of both the mqm.lib and mqci.lib. I removed these linking directives and set new ones in my sourcecode using a #pragma directive. This allowed me to connect to a local queue manager.
However i am still working on a solution to connect to a freshly created QueueManager over the network without receiving 2035 error.
Currently i am reading https://www.mqtechconference.com/sessions_v2014/IBM_MQ_Connection_Authentication.pdf in the hope of solving this issue too! |
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| hughson |
| Posted: Tue Nov 13, 2018 2:04 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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| ratzrattillo wrote: |
| However i am still working on a solution to connect to a freshly created QueueManager over the network without receiving 2035 error. |
Remember to look in the queue manager error log which will tell you exactly what the error is. 2035 can cover quite a number of things.
You may also find this article useful:-
Getting going without turning off IBM MQ Security
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| ratzrattillo |
| Posted: Wed May 08, 2019 9:47 am Post subject: UserID Compatibility mode. |
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Guest
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MQ Explorer offers the ability to connect to a QM via UserId-Compatibility mode.
How can this mode be used instead of MQCSP authentication in C and C++?
Are there examples available that do exactly that?
Thanks for your help  |
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| hughson |
| Posted: Wed May 08, 2019 1:27 pm Post subject: Re: UserID Compatibility mode. |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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| ratzrattillo wrote: |
MQ Explorer offers the ability to connect to a QM via UserId-Compatibility mode.
How can this mode be used instead of MQCSP authentication in C and C++? |
It can't - it's a "feature" specifically in the Java client. Why would you want it? MQCSP offers a super-set of function.
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| ratzrattillo |
| Posted: Wed May 08, 2019 11:17 pm Post subject: |
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Guest
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I am just experimenting with it, and i was curious, if it was possible to use it or not, do offer similar functionality for authentication, like MQ Explorer does.
Thanks for your reply! |
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