120 lines
2.9 KiB
C++
120 lines
2.9 KiB
C++
/***********************************************************************
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uds_connection.cpp - Implements the UnixDomainSocketConnection class.
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Copyright (c) 2007-2008 by Educational Technology Resources, Inc.
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Others may also hold copyrights on code in this file. See the
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CREDITS.txt file in the top directory of the distribution for details.
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This file is part of MySQL++.
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MySQL++ is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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MySQL++ is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with MySQL++; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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***********************************************************************/
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#define MYSQLPP_NOT_HEADER
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#include "common.h"
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#include "uds_connection.h"
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#include "exceptions.h"
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#if !defined(MYSQLPP_PLATFORM_WINDOWS)
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# include <unistd.h>
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# include <sys/stat.h>
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#endif
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using namespace std;
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namespace mysqlpp {
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static const char* common_complaint =
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"UnixDomainSocketConnection only works on POSIX systems";
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bool
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UnixDomainSocketConnection::connect(const char* path,
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const char* db, const char* user, const char* pass)
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{
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#if !defined(MYSQLPP_PLATFORM_WINDOWS)
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if (is_socket(path, &error_message_)) {
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return Connection::connect(db, path, user, pass);
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}
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(void)common_complaint;
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#else
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error_message_ = common_complaint;
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#endif
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if (throw_exceptions()) {
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throw ConnectionFailed(error_message_.c_str());
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}
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else {
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return false;
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}
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}
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bool
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UnixDomainSocketConnection::is_socket(const char* path, std::string* error)
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{
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#if !defined(MYSQLPP_PLATFORM_WINDOWS)
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if (path) {
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struct stat fi;
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if (access(path, F_OK) != 0) {
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if (error) {
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*error = path;
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*error += " does not exist";
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}
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}
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else if (access(path, R_OK | W_OK) != 0) {
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if (error) {
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*error = "Don't have read-write permission for ";
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*error += path;
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}
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}
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else if (stat(path, &fi) != 0) {
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if (error) {
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*error = "Failed to get information for ";
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*error += path;
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}
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}
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else if (!S_ISSOCK(fi.st_mode)) {
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if (error) {
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*error = path;
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*error += " is not a Unix domain socket";
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}
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}
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else {
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// It's a socket, and we have permission to use it
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if (error) {
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error->clear();
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}
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return true;
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}
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}
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else
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#endif
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if (error) {
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#if !defined(MYSQLPP_PLATFORM_WINDOWS)
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*error = "NULL is not a valid Unix domain socket";
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#else
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*error = common_complaint;
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#endif
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}
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return false;
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}
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} // end namespace mysqlpp
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