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Diffstat (limited to 'cmd/faucet/faucet.go')
-rw-r--r--cmd/faucet/faucet.go255
1 files changed, 195 insertions, 60 deletions
diff --git a/cmd/faucet/faucet.go b/cmd/faucet/faucet.go
index 8cd62441e..6b2987315 100644
--- a/cmd/faucet/faucet.go
+++ b/cmd/faucet/faucet.go
@@ -21,8 +21,10 @@ package main
import (
"bytes"
+ "compress/zlib"
"context"
"encoding/json"
+ "errors"
"flag"
"fmt"
"html/template"
@@ -33,6 +35,7 @@ import (
"net/url"
"os"
"path/filepath"
+ "regexp"
"strconv"
"strings"
"sync"
@@ -181,10 +184,10 @@ func main() {
// request represents an accepted funding request.
type request struct {
- Username string `json:"username"` // GitHub user for displaying an avatar
- Account common.Address `json:"account"` // Ethereum address being funded
- Time time.Time `json:"time"` // Timestamp when te request was accepted
- Tx *types.Transaction `json:"tx"` // Transaction funding the account
+ Avatar string `json:"avatar"` // Avatar URL to make the UI nicer
+ Account common.Address `json:"account"` // Ethereum address being funded
+ Time time.Time `json:"time"` // Timestamp when te request was accepted
+ Tx *types.Transaction `json:"tx"` // Transaction funding the account
}
// faucet represents a crypto faucet backed by an Ethereum light client.
@@ -344,15 +347,16 @@ func (f *faucet) apiHandler(conn *websocket.Conn) {
if err := websocket.JSON.Receive(conn, &msg); err != nil {
return
}
- if !strings.HasPrefix(msg.URL, "https://gist.github.com/") {
- websocket.JSON.Send(conn, map[string]string{"error": "URL doesn't link to GitHub Gists"})
+ if !strings.HasPrefix(msg.URL, "https://gist.github.com/") && !strings.HasPrefix(msg.URL, "https://twitter.com/") &&
+ !strings.HasPrefix(msg.URL, "https://plus.google.com/") && !strings.HasPrefix(msg.URL, "https://www.facebook.com/") {
+ websocket.JSON.Send(conn, map[string]string{"error": "URL doesn't link to supported services"})
continue
}
if msg.Tier >= uint(*tiersFlag) {
websocket.JSON.Send(conn, map[string]string{"error": "Invalid funding tier requested"})
continue
}
- log.Info("Faucet funds requested", "gist", msg.URL, "tier", msg.Tier)
+ log.Info("Faucet funds requested", "url", msg.URL, "tier", msg.Tier)
// If captcha verifications are enabled, make sure we're not dealing with a robot
if *captchaToken != "" {
@@ -381,65 +385,37 @@ func (f *faucet) apiHandler(conn *websocket.Conn) {
continue
}
}
- // Retrieve the gist from the GitHub Gist APIs
- parts := strings.Split(msg.URL, "/")
- req, _ := http.NewRequest("GET", "https://api.github.com/gists/"+parts[len(parts)-1], nil)
- if *githubUser != "" {
- req.SetBasicAuth(*githubUser, *githubToken)
- }
- res, err := http.DefaultClient.Do(req)
- if err != nil {
- websocket.JSON.Send(conn, map[string]string{"error": err.Error()})
- continue
- }
- var gist struct {
- Owner struct {
- Login string `json:"login"`
- } `json:"owner"`
- Files map[string]struct {
- Content string `json:"content"`
- } `json:"files"`
+ // Retrieve the Ethereum address to fund, the requesting user and a profile picture
+ var (
+ username string
+ avatar string
+ address common.Address
+ )
+ switch {
+ case strings.HasPrefix(msg.URL, "https://gist.github.com/"):
+ username, avatar, address, err = authGitHub(msg.URL)
+ case strings.HasPrefix(msg.URL, "https://twitter.com/"):
+ username, avatar, address, err = authTwitter(msg.URL)
+ case strings.HasPrefix(msg.URL, "https://plus.google.com/"):
+ username, avatar, address, err = authGooglePlus(msg.URL)
+ case strings.HasPrefix(msg.URL, "https://www.facebook.com/"):
+ username, avatar, address, err = authFacebook(msg.URL)
+ default:
+ err = errors.New("Something funky happened, please open an issue at https://github.com/ethereum/go-ethereum/issues")
}
- err = json.NewDecoder(res.Body).Decode(&gist)
- res.Body.Close()
if err != nil {
websocket.JSON.Send(conn, map[string]string{"error": err.Error()})
continue
}
- if gist.Owner.Login == "" {
- websocket.JSON.Send(conn, map[string]string{"error": "Anonymous Gists not allowed"})
- continue
- }
- // Iterate over all the files and look for Ethereum addresses
- var address common.Address
- for _, file := range gist.Files {
- content := strings.TrimSpace(file.Content)
- if len(content) == 2+common.AddressLength*2 {
- address = common.HexToAddress(content)
- }
- }
- if address == (common.Address{}) {
- websocket.JSON.Send(conn, map[string]string{"error": "No Ethereum address found to fund"})
- continue
- }
- // Validate the user's existence since the API is unhelpful here
- if res, err = http.Head("https://github.com/" + gist.Owner.Login); err != nil {
- websocket.JSON.Send(conn, map[string]string{"error": err.Error()})
- continue
- }
- res.Body.Close()
+ log.Info("Faucet request valid", "url", msg.URL, "tier", msg.Tier, "user", username, "address", address)
- if res.StatusCode != 200 {
- websocket.JSON.Send(conn, map[string]string{"error": "Invalid user... boom!"})
- continue
- }
// Ensure the user didn't request funds too recently
f.lock.Lock()
var (
fund bool
timeout time.Time
)
- if timeout = f.timeouts[gist.Owner.Login]; time.Now().After(timeout) {
+ if timeout = f.timeouts[username]; time.Now().After(timeout) {
// User wasn't funded recently, create the funding transaction
amount := new(big.Int).Mul(big.NewInt(int64(*payoutFlag)), ether)
amount = new(big.Int).Mul(amount, new(big.Int).Exp(big.NewInt(5), big.NewInt(int64(msg.Tier)), nil))
@@ -459,12 +435,12 @@ func (f *faucet) apiHandler(conn *websocket.Conn) {
continue
}
f.reqs = append(f.reqs, &request{
- Username: gist.Owner.Login,
- Account: address,
- Time: time.Now(),
- Tx: signed,
+ Avatar: avatar,
+ Account: address,
+ Time: time.Now(),
+ Tx: signed,
})
- f.timeouts[gist.Owner.Login] = time.Now().Add(time.Duration(*minutesFlag*int(math.Pow(3, float64(msg.Tier)))) * time.Minute)
+ f.timeouts[username] = time.Now().Add(time.Duration(*minutesFlag*int(math.Pow(3, float64(msg.Tier)))) * time.Minute)
fund = true
}
f.lock.Unlock()
@@ -474,7 +450,7 @@ func (f *faucet) apiHandler(conn *websocket.Conn) {
websocket.JSON.Send(conn, map[string]string{"error": fmt.Sprintf("%s left until next allowance", common.PrettyDuration(timeout.Sub(time.Now())))})
continue
}
- websocket.JSON.Send(conn, map[string]string{"success": fmt.Sprintf("Funding request accepted for %s into %s", gist.Owner.Login, address.Hex())})
+ websocket.JSON.Send(conn, map[string]string{"success": fmt.Sprintf("Funding request accepted for %s into %s", username, address.Hex())})
select {
case f.update <- struct{}{}:
default:
@@ -542,3 +518,162 @@ func (f *faucet) loop() {
}
}
}
+
+// authGitHub tries to authenticate a faucet request using GitHub gists, returning
+// the username, avatar URL and Ethereum address to fund on success.
+func authGitHub(url string) (string, string, common.Address, error) {
+ // Retrieve the gist from the GitHub Gist APIs
+ parts := strings.Split(url, "/")
+ req, _ := http.NewRequest("GET", "https://api.github.com/gists/"+parts[len(parts)-1], nil)
+ if *githubUser != "" {
+ req.SetBasicAuth(*githubUser, *githubToken)
+ }
+ res, err := http.DefaultClient.Do(req)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ var gist struct {
+ Owner struct {
+ Login string `json:"login"`
+ } `json:"owner"`
+ Files map[string]struct {
+ Content string `json:"content"`
+ } `json:"files"`
+ }
+ err = json.NewDecoder(res.Body).Decode(&gist)
+ res.Body.Close()
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ if gist.Owner.Login == "" {
+ return "", "", common.Address{}, errors.New("Anonymous Gists not allowed")
+ }
+ // Iterate over all the files and look for Ethereum addresses
+ var address common.Address
+ for _, file := range gist.Files {
+ content := strings.TrimSpace(file.Content)
+ if len(content) == 2+common.AddressLength*2 {
+ address = common.HexToAddress(content)
+ }
+ }
+ if address == (common.Address{}) {
+ return "", "", common.Address{}, errors.New("No Ethereum address found to fund")
+ }
+ // Validate the user's existence since the API is unhelpful here
+ if res, err = http.Head("https://github.com/" + gist.Owner.Login); err != nil {
+ return "", "", common.Address{}, err
+ }
+ res.Body.Close()
+
+ if res.StatusCode != 200 {
+ return "", "", common.Address{}, errors.New("Invalid user... boom!")
+ }
+ // Everything passed validation, return the gathered infos
+ return gist.Owner.Login + "@github", fmt.Sprintf("https://github.com/%s.png?size=64", gist.Owner.Login), address, nil
+}
+
+// authTwitter tries to authenticate a faucet request using Twitter posts, returning
+// the username, avatar URL and Ethereum address to fund on success.
+func authTwitter(url string) (string, string, common.Address, error) {
+ // Ensure the user specified a meaningful URL, no fancy nonsense
+ parts := strings.Split(url, "/")
+ if len(parts) < 4 || parts[len(parts)-2] != "status" {
+ return "", "", common.Address{}, errors.New("Invalid Twitter status URL")
+ }
+ username := parts[len(parts)-3]
+
+ // Twitter's API isn't really friendly with direct links. Still, we don't
+ // want to do ask read permissions from users, so just load the public posts and
+ // scrape it for the Ethereum address and profile URL.
+ res, err := http.Get(url)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ defer res.Body.Close()
+
+ reader, err := zlib.NewReader(res.Body)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ body, err := ioutil.ReadAll(reader)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ address := common.HexToAddress(string(regexp.MustCompile("0x[0-9a-fA-F]{40}").Find(body)))
+ if address == (common.Address{}) {
+ return "", "", common.Address{}, errors.New("No Ethereum address found to fund")
+ }
+ var avatar string
+ if parts = regexp.MustCompile("src=\"([^\"]+twimg.com/profile_images[^\"]+)\"").FindStringSubmatch(string(body)); len(parts) == 2 {
+ avatar = parts[1]
+ }
+ return username + "@twitter", avatar, address, nil
+}
+
+// authGooglePlus tries to authenticate a faucet request using GooglePlus posts,
+// returning the username, avatar URL and Ethereum address to fund on success.
+func authGooglePlus(url string) (string, string, common.Address, error) {
+ // Ensure the user specified a meaningful URL, no fancy nonsense
+ parts := strings.Split(url, "/")
+ if len(parts) < 4 || parts[len(parts)-2] != "posts" {
+ return "", "", common.Address{}, errors.New("Invalid Google+ post URL")
+ }
+ username := parts[len(parts)-3]
+
+ // Google's API isn't really friendly with direct links. Still, we don't
+ // want to do ask read permissions from users, so just load the public posts and
+ // scrape it for the Ethereum address and profile URL.
+ res, err := http.Get(url)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ defer res.Body.Close()
+
+ body, err := ioutil.ReadAll(res.Body)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ address := common.HexToAddress(string(regexp.MustCompile("0x[0-9a-fA-F]{40}").Find(body)))
+ if address == (common.Address{}) {
+ return "", "", common.Address{}, errors.New("No Ethereum address found to fund")
+ }
+ var avatar string
+ if parts = regexp.MustCompile("src=\"([^\"]+googleusercontent.com[^\"]+photo.jpg)\"").FindStringSubmatch(string(body)); len(parts) == 2 {
+ avatar = parts[1]
+ }
+ return username + "@google+", avatar, address, nil
+}
+
+// authFacebook tries to authenticate a faucet request using Facebook posts,
+// returning the username, avatar URL and Ethereum address to fund on success.
+func authFacebook(url string) (string, string, common.Address, error) {
+ // Ensure the user specified a meaningful URL, no fancy nonsense
+ parts := strings.Split(url, "/")
+ if len(parts) < 4 || parts[len(parts)-2] != "posts" {
+ return "", "", common.Address{}, errors.New("Invalid Facebook post URL")
+ }
+ username := parts[len(parts)-3]
+
+ // Facebook's Graph API isn't really friendly with direct links. Still, we don't
+ // want to do ask read permissions from users, so just load the public posts and
+ // scrape it for the Ethereum address and profile URL.
+ res, err := http.Get(url)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ defer res.Body.Close()
+
+ body, err := ioutil.ReadAll(res.Body)
+ if err != nil {
+ return "", "", common.Address{}, err
+ }
+ address := common.HexToAddress(string(regexp.MustCompile("0x[0-9a-fA-F]{40}").Find(body)))
+ if address == (common.Address{}) {
+ return "", "", common.Address{}, errors.New("No Ethereum address found to fund")
+ }
+ var avatar string
+ if parts = regexp.MustCompile("src=\"([^\"]+fbcdn.net[^\"]+)\"").FindStringSubmatch(string(body)); len(parts) == 2 {
+ avatar = parts[1]
+ }
+ return username + "@facebook", avatar, address, nil
+}
generated by cgit (git 2.34.1) at 2024-11-12 21:17:10 +0800