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* HELP FOR POSTGRESQL NEEDED...
@ 2002-07-06 12:22 ozric tentacle <ozric02@yahoo.gr>
0 siblings, 1 reply; 2+ messages in thread
From: ozric tentacle @ 2002-07-06 12:22 UTC (permalink / raw)
To: pgsql-questions@postgresql.org; pgsql-interfaces
Hello.I am experiencing a quite strange behavior with my postgreSQL database.
I have edited the file pg_hba.conf like this:
# TYPE DATABASE IP_ADDRESS MASK AUTH_TYPE AUTH_ARGUMENT
local all password
host all 127.0.0.1 255.255.255.255 password
in order to require user authentication.This works perfectly when I connect to the database with psql or pgaccess and I'm able to perform
all kinds of queries.
However when I try to connect to the database with C++ even though it allows me to connect (providing the correct username & password)
all the queries fail...The C++ code I use is the following:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream.h>
#include <string>
#include "libpq++.h"
using namespace std;
int main()
{
string login,pwd;
char name[10];
char query_string[256];
cout << ">username:";
cin >> login;
cout << ">password:";
cin >> pwd;
cout<<"user to search:";
cin >> name;
// Open the connection to the database and make sure it's OK
PgDatabase data("dbname=goumero");
char *pghost,*pgport,*pgoptions,*pgtty;
char *dbName;
pghost = NULL; /* host name of the backend server */
pgport = NULL; /* port of the backend server */
pgoptions = NULL; /* special options to start up the backend server */
pgtty = NULL; /* debugging tty for the backend server */
dbName = "goumero";
PGconn* conn;
conn = PQsetdbLogin(pghost,pgport,pgoptions,pgtty,dbName,login.c_str(),pwd.c_str()) ;
if (PQstatus(conn) == CONNECTION_BAD ) {
fprintf(stderr, "Connection to database '%s' failed.\n", dbName);
fprintf(stderr, "%s", PQerrorMessage(conn));
return 1;
}
else
//Connection successful...
data.Exec("BEGIN WORK");
data.Exec("LOCK TABLE account in ACCESS EXCLUSIVE MODE");
sprintf(query_string, // create an SQL query string
"SELECT * \
FROM account \
WHERE name='%s'" , name);
if ( !data.ExecTuplesOk(query_string) ) // send the query
{
cerr << "query failed." << endl;
exit(1);
}
for (int i=0; i < data.Tuples(); i++) // loop through all rows returned
cout << data.GetValue(i,0) << endl; // print the value returned
/**************************************************************************************/
data.Exec("COMMIT WORK");
PQfinish(conn);
return 0;
} // End main()
Note:The same query above is correctly executed when I connect with psql .
Also if I remove the user authentication stuff then the same code is executed correctly.
I would be grateful if you helped me - I'm desperate....
---------------------------------
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^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: HELP FOR POSTGRESQL NEEDED...
@ 2002-07-08 16:41 Steve Howe <howe@carcass.dhs.org>
parent: ozric tentacle <ozric02@yahoo.gr>
0 siblings, 0 replies; 2+ messages in thread
From: Steve Howe @ 2002-07-08 16:41 UTC (permalink / raw)
To: pgsql-interfaces-owner@postgresql.org, ozric tentacle <ozric02@yahoo.gr>; +Cc: pgsql-questions@postgresql.org; pgsql-interfaces
Hello ozric,
Saturday, July 6, 2002, 9:22:44 AM, you wrote:
ot> Hello.I am experiencing a quite strange behavior with my
ot> postgreSQL database.
ot> I have edited the file pg_hba.conf like this:
ot> # TYPE DATABASE IP_ADDRESS MASK AUTH_TYPE AUTH_ARGUMENT
ot> local all password
ot> host all 127.0.0.1 255.255.255.255 password
ot> in order to require user authentication.This works perfectly when
ot> I connect to the database with psql or pgaccess and I'm able to
ot> perform
ot> all kinds of queries.
ot> However when I try to connect to the database with C++ even though
ot> it allows me to connect (providing the correct username &
ot> password)
ot> all the queries fail...The C++ code I use is the following:
Did you start the postmaster with -i parameter so that it allows
TCP/IP connections ?
Run a nmap localhost command to check if your 5432 port is open. If
PostgreSQL is running and accepting connections, it should be listed
as open.
Psql will connect through unix sockets, not as TCP sockets.
-------------
Best regards,
Steve Howe mailto:howe@carcass.dhs.org
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2002-07-06 12:22 HELP FOR POSTGRESQL NEEDED... ozric tentacle <ozric02@yahoo.gr>
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