778631a860
The REST API now supports the If-Modified-Since, If-Unmodified-Since, If-Match and If-None-Match headers and returns the correct response if the conditional fails. Added tests for the date parsing and expanded the HTTP header tests in the REST API test suite.
90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
#pragma once
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/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2019-07-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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#include <maxscale/cppdefs.hh>
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#include <string>
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#include <time.h>
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#include <maxscale/debug.h>
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/**
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* @brief Return the current HTTP-date
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*
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* @return The RFC 1123 compliant date
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*/
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static inline std::string http_get_date()
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{
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time_t now = time(NULL);
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struct tm tm;
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char buf[200]; // Enough to store all dates
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gmtime_r(&now, &tm);
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strftime(buf, sizeof(buf), "%a, %d %b %y %T GMT", &tm);
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return std::string(buf);
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}
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/**
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* @brief Convert a time_t value into a HTTP-date string
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*
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* @param t Time to convert
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*
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* @return The time converted to a HTTP-date string
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*/
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static inline std::string http_to_date(time_t t)
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{
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struct tm tm;
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char buf[200]; // Enough to store all dates
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gmtime_r(&t, &tm);
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strftime(buf, sizeof(buf), "%a, %d %b %Y %T GMT", &tm);
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return std::string(buf);
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}
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/**
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* @brief Convert a HTTP-date string into time_t
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*
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* @param str HTTP-date formatted string to convert
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*
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* @return The time converted to time_t
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*/
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static inline time_t http_from_date(const std::string& str)
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{
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struct tm tm = {};
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/** First get the GMT time in time_t format */
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strptime(str.c_str(), "%a, %d %b %Y %T GMT", &tm);
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time_t t = mktime(&tm);
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/** Then convert it to local time by calculating the difference between
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* the local time and the GMT time */
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struct tm local_tm = {};
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struct tm gmt_tm = {};
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time_t epoch = 0;
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/** Call tzset() for the sake of portability */
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tzset();
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gmtime_r(&epoch, &gmt_tm);
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localtime_r(&epoch, &local_tm);
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time_t gmt_t = mktime(&gmt_tm);
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time_t local_t = mktime(&local_tm);
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/** The value of `(gmt_t - local_t)` will be the number of seconds west
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* from GMT. For timezones east of GMT, it will be negative. */
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return t - (gmt_t - local_t);
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}
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