[tor-commits] [check/master] Start adding an ip endpoint to the api

[arlo@xxxxxxxxxxxxxx]

commit 727327d4f1f3ecd5209f5ea2e827676019c56459
Author: Arlo Breault <arlolra@xxxxxxxxx>
Date:   Sun Mar 23 14:10:00 2014 -0700

    Start adding an ip endpoint to the api
    
     * This is trac 11270 and github #23
---
 check.go    |    3 ++-
 handlers.go |   27 ++++++++++++++++++---------
 utils.go    |   15 +++++++++++++++
 3 files changed, 35 insertions(+), 10 deletions(-)

diff --git a/check.go b/check.go
index 00b25b6..27277ba 100644
--- a/check.go
+++ b/check.go
@@ -60,9 +60,10 @@ func main() {
 	// routes
 	http.HandleFunc("/", RootHandler(CompileTemplate(*basePath, domain, "index.html"), exits, domain, Phttp, Locales))
 	bulk := BulkHandler(CompileTemplate(*basePath, domain, "bulk.html"), exits, domain)
-	http.HandleFunc("/api/bulk", bulk)
 	http.HandleFunc("/torbulkexitlist", bulk)
 	http.HandleFunc("/cgi-bin/TorBulkExitList.py", bulk)
+	http.HandleFunc("/api/bulk", bulk)
+	http.HandleFunc("/api/ip", APIHandler(exits))
 
 	// start the server
 	log.Printf("Listening on port: %d\n", *port)
diff --git a/handlers.go b/handlers.go
index be9bd6a..27b6e40 100644
--- a/handlers.go
+++ b/handlers.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"github.com/samuel/go-gettext/gettext"
 	"html/template"
@@ -11,7 +12,6 @@ import (
 	"net/http"
 	"regexp"
 	"strconv"
-	"strings"
 	"time"
 )
 
@@ -44,14 +44,7 @@ func RootHandler(Layout *template.Template, Exits *Exits, domain *gettext.Domain
 		)
 
 		// get remote ip
-		host := r.Header.Get("X-Forwarded-For")
-		if len(host) > 0 {
-			parts := strings.Split(host, ",")
-			// apache will append the remote address
-			host = strings.TrimSpace(parts[len(parts)-1])
-		} else {
-			host, _, err = net.SplitHostPort(r.RemoteAddr)
-		}
+		host, err := GetHost(r)
 
 		// determine if we're in Tor
 		if err != nil {
@@ -93,6 +86,22 @@ func RootHandler(Layout *template.Template, Exits *Exits, domain *gettext.Domain
 
 }
 
+type IPResp struct {
+	IsTor bool
+}
+
+func APIHandler(Exits *Exits) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		isTor := false
+		if host, err := GetHost(r); err == nil {
+			_, isTor = Exits.IsTor(host)
+		}
+		ip, _ := json.Marshal(IPResp{isTor})
+		w.Write(ip)
+	}
+}
+
 func BulkHandler(Layout *template.Template, Exits *Exits, domain *gettext.Domain) http.HandlerFunc {
 
 	ApiPath := regexp.MustCompile("^/api/")
diff --git a/utils.go b/utils.go
index 737aa29..88da175 100644
--- a/utils.go
+++ b/utils.go
@@ -8,11 +8,13 @@ import (
 	"io"
 	"io/ioutil"
 	"log"
+	"net"
 	"net/http"
 	"net/url"
 	"os"
 	"path"
 	"strconv"
+	"strings"
 )
 
 func UpToDate(r *http.Request) bool {
@@ -49,6 +51,19 @@ func GetQS(q url.Values, param string, deflt int) (num int, str string) {
 	return
 }
 
+func GetHost(r *http.Request) (host string, err error) {
+	// get remote ip
+	host = r.Header.Get("X-Forwarded-For")
+	if len(host) > 0 {
+		parts := strings.Split(host, ",")
+		// apache will append the remote address
+		host = strings.TrimSpace(parts[len(parts)-1])
+	} else {
+		host, _, err = net.SplitHostPort(r.RemoteAddr)
+	}
+	return
+}
+
 var HaveManual = map[string]bool{
 	"ar":    true,
 	"zh_CN": true,

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