I'm trying to implement a system call which prints hello "current username". I tried using getpwuid(getuid()) but didn't work cause I was unable to include pwd.h or unistd.h or sys/types.h. I currently have no idea how to do the work.
Linux kernel has no notion about username; it knows only user identificator (uid).
Mapping from uid to username is contained in user database, which is stored as a file /etc/passwd. You need to parse this file for extract username.
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I am using a group context to configure the db connection. The password of the db has a password type. When deploying the job, the password is automatically encrypted in the default.properties under the contexts folder.
What if i want to change the password without using the studio (on a client environment)? what can i use to encrypt the new password?
I was able to do it by creating a separate encryption job with a tjava component and the following code:
System.out.println(routines.system.PasswordEncryptUtil.encryptPassword(context.Password));
where context.Password is an input context variable of type String. When running the job, the user is prompted to enter a password and then the encrypted Talend password will be printed. It will have the following format: enc:routine.encryption.key.v1:[encryptedPassword] The routine encryption key can be modified if needed by following this link: https://help.talend.com/r/en-US/8.0/installation-guide-data-integration-windows/rotating-encryption-keys-in-talend-studio
There's actually a few ways for this:
myJob.sh --context_param myPassword=pass123
this unfortunately can be seen by anyone via ps / task manager.
You can also edit the contexts/contextName.properties file and change the context parameters there. This way the context can only be seen if you have access to the file.
Theoretically both should be able to accept the cleartext/encrypted password.
Implicit context load feature can also be used to load contexts: https://help.talend.com/r/en-US/8.0/data-integration-job-examples/creating-job-and-defining-context-variables
Can somebody help me to create a script that changes my password for a Solaris based server? I am not the root user. Usually I change my password like this: I type in the terminal "passwd" then it asks me to enter login password, I insert it, then it ask for the new password, I insert it, then it asks to re-enter new password, I insert it. Does anybody knows how to do this via script? Or even better how to change the password by a command written in only one line?
I want to create a java app that connects to the server and changes the password.
What you're trying to do is deliberately almost impossible to accomplish - because it's a very, very bad, insecure idea to script passwords. Doing so almost certainly compromises the password and therefore the account and everything it has access to.
The Solaris passwd utility uses getpassphrase() to read passwords directly from the controlling terminal - the keyboard. You can find the source code here.
From the getpassphrase() man page:
Description
The getpass() function opens the process's controlling terminal,
writes to that device the null-terminated string prompt, disables
echoing, reads a string of characters up to the next newline character
or EOF, restores the terminal state and closes the terminal.
The getpassphrase() function is identical to getpass(), except
that it reads and returns a string of up to 257 characters in length.
Could someone please explain how to obtain a list of all existing databases on a PostgreSQL server, to which the user already has access, using Qt? PostgreSQL documentation suggests the following query:
SELECT datname FROM pg_database WHERE datistemplate = false;
What are the correct parameters to the following functions:
QSqlDatabase::setDatabaseName(const QString & name) //"postgres" or "pg_database"?
QSqlDatabase::setUserName(const QString & name) //actual user name?
QSqlDatabase::setPassword(const QString & password) //no password? or user password?
Much appreciated. Thank you in advance.
You appear to have already answered the first part of your question. Connect to the postgres or template1 database and issue the query you've quoted above to get a list of databases. I'm guessing - reading between the lines - that you don't know how to connect to PostgreSQL to send that query, and that's what the second part of your question is about. Right?
If so, the QSqlDatabase accessor functions you've mentioned are used to set connection parameters, so the "correct" values depend on your environment.
If you want to issue the query above - to list databases - then you would probably want to connect to the postgres database as it always exists and isn't generally used for anything specific, it's there just to be connected to. That means you'd call setDatabaseName("postgres");. Passing pg_database to setDatabaseName would be nonsensical, since pg_database is the pg_catalog.pg_database table, it isn't a database you can connect to. pg_database is one of those odd tables that exists in every database, which might be what confused you.
With the other two accessors specify the appropriate username and password for your environment, same as you'd use for psql; there's no possible way I could tell you which ones to use.
Note that if you set a password but one isn't required because authentication is done over unix socket ident, trust, or other non-password scheme the password will be ignored.
If this doesn't cover your question, consider editing it and explaining your problem in more detail. What've you tried? What didn't work how you expected? Error messages? Qt version?
Every password that i enter and when i click the button, it tells me that the password is wrong. it activates this field in its properties: InvalidPasswordErrorMessage.
I suspect that the user tries to use the password to connect to the database.
Another weird thing, is even when a password fails to be created..(invalid), the control stores the record in the database... for example in the PasswordFailed in the members table, i get a date and the users details (The control did it in a few occassions, which is bad for login)..
The main issue however, is with the password always being invalid..
In the membership configuration you will find attributes for setting minimum number of non alpanumeric characters, min length etc. Try lowering all such values and see if it accepts your passwords. A complex password like "abc%12U8" should also be accepted.
But the error message also displays upon db connection errors so you should test the connection to the database.
also the db identity should be a member of all the "aspnet_.*" roles on the database.
I am writing an web-application which needs to receive e-mail messages to users' internal email addresses, let administrators approve them, and then forward to corresponding user's external mailbox.
I have installed and configured postfix for message receiving task. It uses virtual e-mail addresses, and my existing database where user email addresses are stored. Local email storage is maildir and I use postfix's virtual MDA.
Basically, I would like to execute a script every time a new message is received, and for which user (maildir message id would be very helpful too). Then I could read the message from python code (python had a module for maildir messageboxes) and insert it in database.
I can think of three ways to do this:
iterate user maildirs and check
if there are any new messages, but it would be ineffective for large number of users.
use dbmail and then check if there are any new messages in database (this would be quicker, but I'd have to configure everything from scratch). Besides, existing user data tables cannot be used.
write a wrapper around maildrop/virtual to save message in db and in maildir as well, but I'd need a way to check if received message is valid and successfully saved by the real MDA.
Any suggestions appreciated!
In the /etc/aliases file you can specifiy a program which gets executed everytime a user recieves a mail. This program gets the mail on stdin. So you dont have to poll and your program gets run instantly.
In response to my own question, I used postfix content_filter with X flag set in pipe and process receiving address and message manually. Since I didn't need to access messages in maildir, this approach works fine for me.