mirror of https://github.com/miniflux/v2.git
129 lines
2.8 KiB
Go
129 lines
2.8 KiB
Go
// Copyright 2018 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package request // import "miniflux.app/http/request"
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import (
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"fmt"
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"net"
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"net/http"
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"strconv"
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"strings"
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"github.com/gorilla/mux"
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)
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// Cookie returns the cookie value.
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func Cookie(r *http.Request, name string) string {
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cookie, err := r.Cookie(name)
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if err == http.ErrNoCookie {
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return ""
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}
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return cookie.Value
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}
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// FormInt64Value returns a form value as integer.
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func FormInt64Value(r *http.Request, param string) int64 {
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value := r.FormValue(param)
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integer, err := strconv.ParseInt(value, 10, 64)
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if err != nil {
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return 0
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}
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return integer
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}
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// IntParam returns an URL route parameter as integer.
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func IntParam(r *http.Request, param string) (int64, error) {
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vars := mux.Vars(r)
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value, err := strconv.Atoi(vars[param])
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if err != nil {
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return 0, fmt.Errorf("request: %s parameter is not an integer", param)
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}
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if value < 0 {
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return 0, nil
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}
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return int64(value), nil
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}
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// Param returns an URL route parameter as string.
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func Param(r *http.Request, param, defaultValue string) string {
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vars := mux.Vars(r)
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value := vars[param]
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if value == "" {
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value = defaultValue
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}
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return value
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}
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// QueryParam returns a querystring parameter as string.
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func QueryParam(r *http.Request, param, defaultValue string) string {
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value := r.URL.Query().Get(param)
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if value == "" {
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value = defaultValue
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}
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return value
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}
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// QueryIntParam returns a querystring parameter as integer.
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func QueryIntParam(r *http.Request, param string, defaultValue int) int {
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return int(QueryInt64Param(r, param, int64(defaultValue)))
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}
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// QueryInt64Param returns a querystring parameter as int64.
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func QueryInt64Param(r *http.Request, param string, defaultValue int64) int64 {
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value := r.URL.Query().Get(param)
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if value == "" {
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return defaultValue
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}
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val, err := strconv.ParseInt(value, 10, 64)
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if err != nil {
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return defaultValue
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}
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if val < 0 {
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return defaultValue
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}
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return val
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}
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// HasQueryParam checks if the query string contains the given parameter.
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func HasQueryParam(r *http.Request, param string) bool {
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values := r.URL.Query()
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_, ok := values[param]
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return ok
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}
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// RealIP returns client's real IP address.
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func RealIP(r *http.Request) string {
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headers := []string{"X-Forwarded-For", "X-Real-Ip"}
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for _, header := range headers {
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value := r.Header.Get(header)
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if value != "" {
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addresses := strings.Split(value, ",")
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address := strings.TrimSpace(addresses[0])
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if net.ParseIP(address) != nil {
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return address
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}
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}
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}
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// Fallback to TCP/IP source IP address.
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var remoteIP string
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if strings.ContainsRune(r.RemoteAddr, ':') {
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remoteIP, _, _ = net.SplitHostPort(r.RemoteAddr)
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} else {
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remoteIP = r.RemoteAddr
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}
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return remoteIP
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}
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