Thank you, Scott.
That's happening me because incomplete docs reading.
Truly, I'm catched in a very big app, so I have no time to read all the docs.


On 17/11/17 18:31, Scott Mead wrote:

On Fri, Nov 17, 2017 at 4:06 PM, marcelo <marcelo.nico...@gmail.com <mailto:marcelo.nico...@gmail.com>> wrote:

    I need to "emulate" the pg_dump code because the password prompt.
    Years ago I write a program (for the QnX environment) that catched
    some prompt and emulates the standard input. I don't like to do
    that again.


pg_dump can use an environment variable "PGPASSWORD" upon execution (actually, all libpq programs can).  You could have a wrapper that sets the environment variable and then executes pg_dump, this would get you around that prompt.  Similarly, you could use the .pgpass file.

https://www.postgresql.org/docs/9.5/static/libpq-envars.html
https://www.postgresql.org/docs/9.5/static/libpq-pgpass.html

--Scott



    On 17/11/17 17:23, John R Pierce wrote:

        On 11/17/2017 12:19 PM, marcelo wrote:

            Sorry, I was not exact.
            I don't need nor like to change pg_dump. Rather, based on
            pg_dump code, I need to develop a daemon which can receive
            a TCP message (from a privileged app) containing some
            elements: the database to dump, the user under which do
            that, and his password. (My apps are using that same data,
            of course, encripted to the common users).



        I would just fork pg_dump to do the actual dump rather than
        try and incorporate its source code into your app.





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Scott Mead
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