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main.go
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main.go
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package main
import (
"errors"
"flag"
"fmt"
"github.com/go-redis/redis/v7"
"github.com/go-resty/resty/v2"
"io/ioutil"
"log"
"math/rand"
"net/http"
"strconv"
"strings"
"time"
)
type Service struct {
Redis *redis.Client
Resty *resty.Request
}
var ListExceptionWords = []string{"any", "api", "lab", "cla", "edu", "mac", "man", "new", "raw", "ssh", "ten", "tos"}
var (
UseRedis *bool
RedisAddr *string
RedisPassword *string
RedisDB *int
RecheckExistLogins *bool
RecheckFreeLogins *bool
Tokens []string
)
func main() {
rand.Seed(time.Now().UnixNano())
UseRedis = flag.Bool("use_redis", false, "check true if you use redis for interim results")
RedisAddr = flag.String("redis_addr", "localhost:6379", "redis host:port, default localhost:6379")
RedisPassword = flag.String("redis_password", "", "type redis password, default no password")
RedisDB = flag.Int("redis_db", 0, "type redis db, default 0")
RecheckExistLogins = flag.Bool("recheck_exists", false, "check true if you need to recheck exist logins")
RecheckFreeLogins = flag.Bool("recheck_free", false, "check true if you need to recheck free logins")
tokens := flag.String("tokens", "", "tokens separated by \",\"")
flag.Parse()
Tokens = strings.Split(*tokens, ",")
s := &Service{}
if *UseRedis {
s.Redis = ExampleNewClient()
}
rClient := resty.New()
request := rClient.R()
s.Resty = request
template := "abcdefghijklmnopqrstuvwxyz0123456789"
var loginList string
loginList = "### All free 3 symbols logins for github.com\n\n"
loginList += "#### Use flags:\n"
loginList += "- **-use_redis** - `bool`, default false;\n"
loginList += "- **-redis_addr** - `string`, host:port, default localhost:6379;\n"
loginList += "- **-redis_password** - `string`, default \"\";\n"
loginList += "- **-redis_db** - `int`, default 0;\n"
loginList += "- **-recheck_exists** - `bool`, default false;\n"
loginList += "- **-recheck_free** - `bool`, default false;\n"
loginList += "- **-tokens** - `string` separated by \",\";\n"
loginList += "\n\n"
for _, ch := range template {
loginList += "\n\n"
loginList += strings.ToUpper(fmt.Sprintf("###### %c: \n",ch))
for _, ch2 := range template {
for _, ch3 := range template {
name := fmt.Sprintf("%c%c%c", ch, ch2, ch3)
err := s.checkName(name)
if err != nil {
log.Println(name, err)
continue
}
loginList += name + " "
}
}
}
err := ioutil.WriteFile("README.md", []byte(loginList), 0644)
if err != nil {
log.Fatal()
}
fmt.Println("Все запросы выполнены")
}
func (s *Service) checkName(name string) error {
for i := 0; i < len(ListExceptionWords); i++ {
if name == ListExceptionWords[i] {
return errors.New("exception word")
}
}
if len(Tokens) > 0 {
s.Resty.SetAuthToken(Tokens[rand.Intn(len(Tokens))])
}
freeKey := fmt.Sprintf("github:login:%d:FREE:%s", len(name), name)
existKey := fmt.Sprintf("github:login:%d:EXIST:%s", len(name), name)
if *UseRedis && !*RecheckFreeLogins {
redisFree, err := s.Redis.Exists(freeKey).Result()
if err != nil {
return fmt.Errorf("redis free-key exists error: %w", err)
}
if redisFree > 0 {
return nil
}
}
if *UseRedis && !*RecheckExistLogins {
redisExists, err := s.Redis.Exists(existKey).Result()
if err != nil {
return fmt.Errorf("redis exist-key exists error: %w", err)
}
if redisExists > 0 {
return errors.New("login exist")
}
}
response, err := s.Resty.Get("https://api.github.com/users/" + name)
if err != nil {
return fmt.Errorf("resty get error: %w", err)
}
if err := s.checkRateLimit(response); err != nil {
return err
}
if response.StatusCode() == http.StatusOK {
if *UseRedis {
if err := s.Redis.Incr(existKey).Err(); err != nil {
return fmt.Errorf("redis exist-key incr error: %w", err)
}
}
return errors.New("login exist")
}
if *UseRedis {
if err := s.Redis.Incr(freeKey).Err(); err != nil {
return fmt.Errorf("redis free-key incr error: %w", err)
}
}
log.Println(">>>>>>>>>>>>> free login", name)
return nil
}
func (s *Service) checkRateLimit(response *resty.Response) error {
rateLimit := response.Header().Get("X-RateLimit-Remaining")
rLimit, err := strconv.Atoi(rateLimit)
if err != nil {
return fmt.Errorf("strconv atoi for \"X-RateLimit-Remaining\" error: %w", err)
}
rateReset := response.Header().Get("X-RateLimit-Reset")
rReset, err := strconv.Atoi(rateReset)
if err != nil {
return fmt.Errorf("strconv atoi for \"X-RateLimit-Reset\" error: %w", err)
}
sleepTime := int32(rReset) - int32(time.Now().Unix())
var logs string
logs += fmt.Sprintf("limit left = %d, sleepTime min = %d", rLimit, sleepTime/60)
if rLimit <= 0 && sleepTime > 0 {
log.Println(logs)
time.Sleep(time.Duration(sleepTime) * time.Second)
}
log.Println(logs)
return nil
}
func ExampleNewClient() *redis.Client {
client := redis.NewClient(&redis.Options{
Addr: *RedisAddr,
Password: *RedisPassword,
DB: *RedisDB,
})
pong, err := client.Ping().Result()
if err != nil {
log.Fatal(err)
}
if len(pong) < 0 {
log.Fatal(err)
}
return client
}