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83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
// Copyright (c) 2015-2022 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// Package amztime implements AWS specific time parsing and deviations
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package amztime
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import (
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"errors"
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"net/http"
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"time"
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)
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// Supported amz date formats.
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var amzDateFormats = []string{
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// Do not change this order, x-amz-date format is usually in
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// iso8601Format rest are meant for relaxed handling of other
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// odd SDKs that might be out there.
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"20060102T150405Z",
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time.RFC1123,
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time.RFC1123Z,
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// Add new AMZ date formats here.
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}
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// ErrMalformedDate always returned for dates that cannot be parsed.
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var ErrMalformedDate = errors.New("malformed date")
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// Parse parses date string via supported amz date formats.
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func Parse(amzDateStr string) (time.Time, error) {
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for _, dateFormat := range amzDateFormats {
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amzDate, err := time.Parse(dateFormat, amzDateStr)
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if err == nil {
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return amzDate, nil
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}
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}
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return time.Time{}, ErrMalformedDate
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}
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var httpTimeFormats = []string{
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// Do not chagne this order, http time format dates
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// are usually in http.TimeFormat however there are
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// situations where for example aws-sdk-java doesn't
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// send the correct format.
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http.TimeFormat,
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"Mon, 2 Jan 2006 15:04:05 GMT",
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}
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// ParseHeader parses http.TimeFormat with an acceptable
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// extension for http.TimeFormat - return time might be zero
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// if the timeStr is invalid.
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func ParseHeader(timeStr string) (time.Time, error) {
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for _, dateFormat := range httpTimeFormats {
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t, err := time.Parse(dateFormat, timeStr)
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if err == nil {
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return t, nil
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}
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}
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return time.Time{}, ErrMalformedDate
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}
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// ParseReplicationTS parse http.TimeFormat first
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// will try time.RFC3339Nano when parse http.TimeFormat failed
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func ParseReplicationTS(str string) (time.Time, error) {
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tm, err := time.Parse(http.TimeFormat, str)
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if tm.IsZero() || err != nil {
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tm, err = time.Parse(time.RFC3339Nano, str)
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}
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return tm, err
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}
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