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

#include <grass/dbmi.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);
    init_error();

    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) {
        append_error( "Cannot grant on table:\n");
	append_error( db_get_string(&sql) );
	append_error( "\n" );
	append_error(PQerrorMessage(pg_conn));
	report_error();
	PQclear(res);
	db_free_string ( &sql);
	return DB_FAILED;
    }
    
    PQclear(res);
    db_free_string ( &sql);
    
    return DB_OK;
}