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gitea/modules/setting/security.go
techknowlogick f183783baa
Save initial signup information for users to aid in spam prevention ()
This will allow instance admins to view signup pattern patterns for
public instances. It is modelled after discourse, mastodon, and
MediaWiki's approaches.

Note: This has privacy implications, but as the above-stated open-source
projects take this approach, especially MediaWiki, which I have no doubt
looked into this thoroughly, it is likely okay for us, too. However, I
would be appreciative of any feedback on how this could be improved.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2024-09-09 17:05:16 -04:00

175 lines
6.7 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package setting
import (
"net/url"
"os"
"strings"
"code.gitea.io/gitea/modules/auth/password/hash"
"code.gitea.io/gitea/modules/generate"
"code.gitea.io/gitea/modules/log"
)
var (
// Security settings
InstallLock bool
SecretKey string
InternalToken string // internal access token
LogInRememberDays int
CookieRememberName string
ReverseProxyAuthUser string
ReverseProxyAuthEmail string
ReverseProxyAuthFullName string
ReverseProxyLimit int
ReverseProxyTrustedProxies []string
MinPasswordLength int
ImportLocalPaths bool
DisableGitHooks bool
DisableWebhooks bool
OnlyAllowPushIfGiteaEnvironmentSet bool
PasswordComplexity []string
PasswordHashAlgo string
PasswordCheckPwn bool
SuccessfulTokensCacheSize int
DisableQueryAuthToken bool
CSRFCookieName = "_csrf"
CSRFCookieHTTPOnly = true
RecordUserSignupMetadata = false
)
// loadSecret load the secret from ini by uriKey or verbatimKey, only one of them could be set
// If the secret is loaded from uriKey (file), the file should be non-empty, to guarantee the behavior stable and clear.
func loadSecret(sec ConfigSection, uriKey, verbatimKey string) string {
// don't allow setting both URI and verbatim string
uri := sec.Key(uriKey).String()
verbatim := sec.Key(verbatimKey).String()
if uri != "" && verbatim != "" {
log.Fatal("Cannot specify both %s and %s", uriKey, verbatimKey)
}
// if we have no URI, use verbatim
if uri == "" {
return verbatim
}
tempURI, err := url.Parse(uri)
if err != nil {
log.Fatal("Failed to parse %s (%s): %v", uriKey, uri, err)
}
switch tempURI.Scheme {
case "file":
buf, err := os.ReadFile(tempURI.RequestURI())
if err != nil {
log.Fatal("Failed to read %s (%s): %v", uriKey, tempURI.RequestURI(), err)
}
val := strings.TrimSpace(string(buf))
if val == "" {
// The file shouldn't be empty, otherwise we can not know whether the user has ever set the KEY or KEY_URI
// For example: if INTERNAL_TOKEN_URI=file:///empty-file,
// Then if the token is re-generated during installation and saved to INTERNAL_TOKEN
// Then INTERNAL_TOKEN and INTERNAL_TOKEN_URI both exist, that's a fatal error (they shouldn't)
log.Fatal("Failed to read %s (%s): the file is empty", uriKey, tempURI.RequestURI())
}
return val
// only file URIs are allowed
default:
log.Fatal("Unsupported URI-Scheme %q (%q = %q)", tempURI.Scheme, uriKey, uri)
return ""
}
}
// generateSaveInternalToken generates and saves the internal token to app.ini
func generateSaveInternalToken(rootCfg ConfigProvider) {
token, err := generate.NewInternalToken()
if err != nil {
log.Fatal("Error generate internal token: %v", err)
}
InternalToken = token
saveCfg, err := rootCfg.PrepareSaving()
if err != nil {
log.Fatal("Error saving internal token: %v", err)
}
rootCfg.Section("security").Key("INTERNAL_TOKEN").SetValue(token)
saveCfg.Section("security").Key("INTERNAL_TOKEN").SetValue(token)
if err = saveCfg.Save(); err != nil {
log.Fatal("Error saving internal token: %v", err)
}
}
func loadSecurityFrom(rootCfg ConfigProvider) {
sec := rootCfg.Section("security")
InstallLock = HasInstallLock(rootCfg)
LogInRememberDays = sec.Key("LOGIN_REMEMBER_DAYS").MustInt(31)
SecretKey = loadSecret(sec, "SECRET_KEY_URI", "SECRET_KEY")
if SecretKey == "" {
// FIXME: https://github.com/go-gitea/gitea/issues/16832
// Until it supports rotating an existing secret key, we shouldn't move users off of the widely used default value
SecretKey = "!#@FDEWREWR&*(" //nolint:gosec
}
CookieRememberName = sec.Key("COOKIE_REMEMBER_NAME").MustString("gitea_incredible")
ReverseProxyAuthUser = sec.Key("REVERSE_PROXY_AUTHENTICATION_USER").MustString("X-WEBAUTH-USER")
ReverseProxyAuthEmail = sec.Key("REVERSE_PROXY_AUTHENTICATION_EMAIL").MustString("X-WEBAUTH-EMAIL")
ReverseProxyAuthFullName = sec.Key("REVERSE_PROXY_AUTHENTICATION_FULL_NAME").MustString("X-WEBAUTH-FULLNAME")
ReverseProxyLimit = sec.Key("REVERSE_PROXY_LIMIT").MustInt(1)
ReverseProxyTrustedProxies = sec.Key("REVERSE_PROXY_TRUSTED_PROXIES").Strings(",")
if len(ReverseProxyTrustedProxies) == 0 {
ReverseProxyTrustedProxies = []string{"127.0.0.0/8", "::1/128"}
}
MinPasswordLength = sec.Key("MIN_PASSWORD_LENGTH").MustInt(8)
ImportLocalPaths = sec.Key("IMPORT_LOCAL_PATHS").MustBool(false)
DisableGitHooks = sec.Key("DISABLE_GIT_HOOKS").MustBool(true)
DisableWebhooks = sec.Key("DISABLE_WEBHOOKS").MustBool(false)
OnlyAllowPushIfGiteaEnvironmentSet = sec.Key("ONLY_ALLOW_PUSH_IF_GITEA_ENVIRONMENT_SET").MustBool(true)
// Ensure that the provided default hash algorithm is a valid hash algorithm
var algorithm *hash.PasswordHashAlgorithm
PasswordHashAlgo, algorithm = hash.SetDefaultPasswordHashAlgorithm(sec.Key("PASSWORD_HASH_ALGO").MustString(""))
if algorithm == nil {
log.Fatal("The provided password hash algorithm was invalid: %s", sec.Key("PASSWORD_HASH_ALGO").MustString(""))
}
CSRFCookieHTTPOnly = sec.Key("CSRF_COOKIE_HTTP_ONLY").MustBool(true)
PasswordCheckPwn = sec.Key("PASSWORD_CHECK_PWN").MustBool(false)
SuccessfulTokensCacheSize = sec.Key("SUCCESSFUL_TOKENS_CACHE_SIZE").MustInt(20)
InternalToken = loadSecret(sec, "INTERNAL_TOKEN_URI", "INTERNAL_TOKEN")
if InstallLock && InternalToken == "" {
// if Gitea has been installed but the InternalToken hasn't been generated (upgrade from an old release), we should generate
// some users do cluster deployment, they still depend on this auto-generating behavior.
generateSaveInternalToken(rootCfg)
}
cfgdata := sec.Key("PASSWORD_COMPLEXITY").Strings(",")
if len(cfgdata) == 0 {
cfgdata = []string{"off"}
}
PasswordComplexity = make([]string, 0, len(cfgdata))
for _, name := range cfgdata {
name := strings.ToLower(strings.Trim(name, `"`))
if name != "" {
PasswordComplexity = append(PasswordComplexity, name)
}
}
sectionHasDisableQueryAuthToken := sec.HasKey("DISABLE_QUERY_AUTH_TOKEN")
// TODO: default value should be true in future releases
DisableQueryAuthToken = sec.Key("DISABLE_QUERY_AUTH_TOKEN").MustBool(false)
RecordUserSignupMetadata = sec.Key("RECORD_USER_SIGNUP_METADATA").MustBool(false)
// warn if the setting is set to false explicitly
if sectionHasDisableQueryAuthToken && !DisableQueryAuthToken {
log.Warn("Enabling Query API Auth tokens is not recommended. DISABLE_QUERY_AUTH_TOKEN will default to true in gitea 1.23 and will be removed in gitea 1.24.")
}
}