Geografic-Information-System/db/drivers/postgres/priv.c

/*!
  \file db/driver/postgres/priv.c
  
  \brief DBMI - Low Level PostgreSQL database driver - privilages
  
  This program is free software under the GNU General Public License
  (>=v2). Read the file COPYING that comes with GRASS for details.
  
  \author Radim Blazek
 */
#include <grass/dbmi.h>
#include <grass/glocale.h>
#include "globals.h"
#include "proto.h"

int db__driver_grant_on_table(dbString * tableName, int priv, int to)
{
    PGresult *res;
    dbString sql;
    dbConnection connection;

    G_debug(3, "db__driver_grant_on_table()");

    db_get_connection(&connection);
    db_init_string(&sql);

    db_set_string(&sql, "grant ");
    if (priv | DB_PRIV_SELECT)
	db_append_string(&sql, "select ");

    db_append_string(&sql, "on ");
    db_append_string(&sql, db_get_string(tableName));

    db_append_string(&sql, " to ");

    if (to | DB_GROUP && connection.group) {
	db_append_string(&sql, "group ");
	db_append_string(&sql, connection.group);

	if (to | DB_PUBLIC)
	    db_append_string(&sql, ", ");
    }

    if (to | DB_PUBLIC)
	db_append_string(&sql, "public");

    G_debug(3, " SQL: %s", db_get_string(&sql));

    res = PQexec(pg_conn, db_get_string(&sql));

    if (!res || PQresultStatus(res) != PGRES_COMMAND_OK) {
	db_d_append_error("%s\n%s\n%s",
			  _("Unable grant on table:"),
			  db_get_string(&sql),
			  PQerrorMessage(pg_conn));
	db_d_report_error();
	PQclear(res);
	db_free_string(&sql);
	return DB_FAILED;
    }

    PQclear(res);
    db_free_string(&sql);

    return DB_OK;
}