mirror of https://github.com/muety/wakapi.git
88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
package utils
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import (
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"encoding/base64"
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"errors"
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"github.com/alexedwards/argon2id"
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"golang.org/x/crypto/bcrypt"
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"net/http"
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"regexp"
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"strings"
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)
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var md5Regex = regexp.MustCompile(`^[a-f0-9]{32}$`)
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func ExtractBasicAuth(r *http.Request) (username, password string, err error) {
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authHeader := strings.Split(r.Header.Get("Authorization"), " ")
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if len(authHeader) != 2 || authHeader[0] != "Basic" {
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return username, password, errors.New("failed to extract API key")
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}
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hash, err := base64.StdEncoding.DecodeString(authHeader[1])
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userKey := strings.TrimSpace(string(hash))
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if err != nil {
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return username, password, err
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}
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re := regexp.MustCompile(`^(.+):(.+)$`)
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groups := re.FindAllStringSubmatch(userKey, -1)
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if len(groups) == 0 || len(groups[0]) != 3 {
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return username, password, errors.New("failed to parse user agent string")
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}
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username, password = groups[0][1], groups[0][2]
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return username, password, err
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}
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func ExtractBearerAuth(r *http.Request) (key string, err error) {
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authHeader := strings.Split(r.Header.Get("Authorization"), " ")
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if len(authHeader) != 2 || (authHeader[0] != "Basic" && authHeader[0] != "Bearer") {
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return key, errors.New("failed to extract API key")
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}
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keyBytes, err := base64.StdEncoding.DecodeString(authHeader[1])
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return string(keyBytes), err
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}
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// password hashing
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func ComparePassword(hashed, plain, pepper string) bool {
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if hashed[0:10] == "$argon2id$" {
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return CompareArgon2Id(hashed, plain, pepper)
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}
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return CompareBcrypt(hashed, plain, pepper)
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}
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func HashPassword(plain, pepper string) (string, error) {
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return HashArgon2Id(plain, pepper)
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}
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func CompareBcrypt(hashed, plain, pepper string) bool {
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plainPepperedPassword := []byte(strings.TrimSpace(plain) + pepper)
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err := bcrypt.CompareHashAndPassword([]byte(hashed), plainPepperedPassword)
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return err == nil
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}
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func HashBcrypt(plain, pepper string) (string, error) {
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plainPepperedPassword := []byte(strings.TrimSpace(plain) + pepper)
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bytes, err := bcrypt.GenerateFromPassword(plainPepperedPassword, bcrypt.DefaultCost)
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if err == nil {
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return string(bytes), nil
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}
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return "", err
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}
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func CompareArgon2Id(hashed, plain, pepper string) bool {
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plainPepperedPassword := strings.TrimSpace(plain) + pepper
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match, err := argon2id.ComparePasswordAndHash(plainPepperedPassword, hashed)
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return err == nil && match
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}
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func HashArgon2Id(plain, pepper string) (string, error) {
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plainPepperedPassword := strings.TrimSpace(plain) + pepper
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hash, err := argon2id.CreateHash(plainPepperedPassword, argon2id.DefaultParams)
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if err == nil {
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return hash, nil
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}
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return "", err
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}
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