style: rename generatePassword function to RandomString

gpm/cli.go

@@ -17,11 +17,9 @@ package gpm
 import(
   "bufio"
   "fmt"
-  "math/rand"
   "os"
   "strconv"
   "syscall"
-  "time"
   "github.com/atotto/clipboard"
   "github.com/olekukonko/tablewriter"
   "golang.org/x/crypto/ssh/terminal"
@@ -65,29 +63,6 @@ func (c *Cli) printEntries(entries []Entry) {
   }
 }
 
-// generate a random password
-func (c *Cli) generatePassword(length int, letter bool, digit bool, special bool) string {
-	digits := "0123456789"
-	specials := "~=+%^*/()[]{}/!@#$?|"
-	letters := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
-  chars := ""
-	password := make([]byte, length)
-
-  if letter { chars = chars + letters }
-  if digit { chars = chars + digits }
-  if special { chars = chars + specials }
-  if !letter && !digit && !special {
-	  chars = digits + letters
-  }
-
-	rand.Seed(time.Now().UnixNano())
-	for i := 0; i < length; i++ {
-	    password[i] = chars[rand.Intn(len(chars))]
-	}
-
-  return string(password)
-}
-
 // error print a message and exit)
 func (c *Cli) error(msg string) {
   fmt.Printf("ERROR: %s\n", msg)
@@ -213,7 +188,7 @@ func (c *Cli) addEntry() {
   entry.URI      = c.input("Enter the URI: ",  "", true)
   entry.User     = c.input("Enter the username: ", "", true)
   if *RANDOM {
-    entry.Password = c.generatePassword(c.Config.PasswordLength,
+    entry.Password = RandomString(c.Config.PasswordLength,
       c.Config.PasswordLetter, c.Config.PasswordDigit, c.Config.PasswordSpecial)
   } else {
     entry.Password = c.input("Enter the new password: ", entry.Password, false)
@@ -238,7 +213,7 @@ func (c *Cli) updateEntry() {
   entry.URI      = c.input("Enter the new URI: ", entry.URI, true)
   entry.User     = c.input("Enter the new username: ", entry.User, true)
   if *RANDOM {
-    entry.Password = c.generatePassword(c.Config.PasswordLength,
+    entry.Password = RandomString(c.Config.PasswordLength,
       c.Config.PasswordLetter, c.Config.PasswordDigit, c.Config.PasswordSpecial)
   } else {
     entry.Password = c.input("Enter the new password: ", entry.Password, false)

gpm/crypto.go

@@ -21,6 +21,8 @@ import(
   "crypto/rand"
   "encoding/base64"
   "io"
+  mrand "math/rand"
+  "time"
 
   "golang.org/x/crypto/pbkdf2"
 )
@@ -78,3 +80,26 @@ func Decrypt(data string, passphrase string, salt string) ([]byte, error) {
 
   return plaintext, nil
 }
+
+// RandomString generate a random string
+func RandomString(length int, letter bool, digit bool, special bool) string {
+	digits := "0123456789"
+	specials := "~=+%^*/()[]{}/!@#$?|"
+	letters := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+  chars := ""
+	randomString := make([]byte, length)
+
+  if letter { chars = chars + letters }
+  if digit { chars = chars + digits }
+  if special { chars = chars + specials }
+  if !letter && !digit && !special {
+	  chars = digits + letters
+  }
+
+  mrand.Seed(time.Now().UnixNano())
+	for i := 0; i < length; i++ {
+	    randomString[i] = chars[mrand.Intn(len(chars))]
+	}
+
+  return string(randomString)
+}

gpm/main.go

@@ -50,7 +50,7 @@ func Run() {
     flag.PrintDefaults()
     os.Exit(1)
   } else if *PASSWD {
-    fmt.Println(cli.generatePassword(*LENGTH, *LETTER, *DIGIT, *SPECIAL))
+    fmt.Println(RandomString(*LENGTH, *LETTER, *DIGIT, *SPECIAL))
   } else if *LIST {
     cli.listEntry()
   } else if *COPY {