mirror of
https://github.com/go-gitea/gitea
synced 2024-11-05 05:57:03 +01:00
c533991519
German Federal Office for Information Security requests in its technical guideline BSI TR-02102-1 RSA Keylength not shorter than 3000bits starting 2024, in the year 2023 3000bits as a recommendation. Gitea should request longer RSA Keys by default in favor of security and drop old clients which do not support longer keys. https://www.bsi.bund.de/SharedDocs/Downloads/DE/BSI/Publikationen/TechnischeRichtlinien/TR02102/BSI-TR-02102.pdf?__blob=publicationFile&v=9 - Page 19, Table 1.2 --------- Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
198 lines
8.5 KiB
Go
198 lines
8.5 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package setting
|
|
|
|
import (
|
|
"os"
|
|
"path"
|
|
"path/filepath"
|
|
"strings"
|
|
"text/template"
|
|
"time"
|
|
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/util"
|
|
|
|
gossh "golang.org/x/crypto/ssh"
|
|
)
|
|
|
|
var SSH = struct {
|
|
Disabled bool `ini:"DISABLE_SSH"`
|
|
StartBuiltinServer bool `ini:"START_SSH_SERVER"`
|
|
BuiltinServerUser string `ini:"BUILTIN_SSH_SERVER_USER"`
|
|
UseProxyProtocol bool `ini:"SSH_SERVER_USE_PROXY_PROTOCOL"`
|
|
Domain string `ini:"SSH_DOMAIN"`
|
|
Port int `ini:"SSH_PORT"`
|
|
User string `ini:"SSH_USER"`
|
|
ListenHost string `ini:"SSH_LISTEN_HOST"`
|
|
ListenPort int `ini:"SSH_LISTEN_PORT"`
|
|
RootPath string `ini:"SSH_ROOT_PATH"`
|
|
ServerCiphers []string `ini:"SSH_SERVER_CIPHERS"`
|
|
ServerKeyExchanges []string `ini:"SSH_SERVER_KEY_EXCHANGES"`
|
|
ServerMACs []string `ini:"SSH_SERVER_MACS"`
|
|
ServerHostKeys []string `ini:"SSH_SERVER_HOST_KEYS"`
|
|
KeyTestPath string `ini:"SSH_KEY_TEST_PATH"`
|
|
KeygenPath string `ini:"SSH_KEYGEN_PATH"`
|
|
AuthorizedKeysBackup bool `ini:"SSH_AUTHORIZED_KEYS_BACKUP"`
|
|
AuthorizedPrincipalsBackup bool `ini:"SSH_AUTHORIZED_PRINCIPALS_BACKUP"`
|
|
AuthorizedKeysCommandTemplate string `ini:"SSH_AUTHORIZED_KEYS_COMMAND_TEMPLATE"`
|
|
AuthorizedKeysCommandTemplateTemplate *template.Template `ini:"-"`
|
|
MinimumKeySizeCheck bool `ini:"-"`
|
|
MinimumKeySizes map[string]int `ini:"-"`
|
|
CreateAuthorizedKeysFile bool `ini:"SSH_CREATE_AUTHORIZED_KEYS_FILE"`
|
|
CreateAuthorizedPrincipalsFile bool `ini:"SSH_CREATE_AUTHORIZED_PRINCIPALS_FILE"`
|
|
ExposeAnonymous bool `ini:"SSH_EXPOSE_ANONYMOUS"`
|
|
AuthorizedPrincipalsAllow []string `ini:"SSH_AUTHORIZED_PRINCIPALS_ALLOW"`
|
|
AuthorizedPrincipalsEnabled bool `ini:"-"`
|
|
TrustedUserCAKeys []string `ini:"SSH_TRUSTED_USER_CA_KEYS"`
|
|
TrustedUserCAKeysFile string `ini:"SSH_TRUSTED_USER_CA_KEYS_FILENAME"`
|
|
TrustedUserCAKeysParsed []gossh.PublicKey `ini:"-"`
|
|
PerWriteTimeout time.Duration `ini:"SSH_PER_WRITE_TIMEOUT"`
|
|
PerWritePerKbTimeout time.Duration `ini:"SSH_PER_WRITE_PER_KB_TIMEOUT"`
|
|
}{
|
|
Disabled: false,
|
|
StartBuiltinServer: false,
|
|
Domain: "",
|
|
Port: 22,
|
|
ServerCiphers: []string{"chacha20-poly1305@openssh.com", "aes128-ctr", "aes192-ctr", "aes256-ctr", "aes128-gcm@openssh.com", "aes256-gcm@openssh.com"},
|
|
ServerKeyExchanges: []string{"curve25519-sha256", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521", "diffie-hellman-group14-sha256", "diffie-hellman-group14-sha1"},
|
|
ServerMACs: []string{"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1"},
|
|
KeygenPath: "",
|
|
MinimumKeySizeCheck: true,
|
|
MinimumKeySizes: map[string]int{"ed25519": 256, "ed25519-sk": 256, "ecdsa": 256, "ecdsa-sk": 256, "rsa": 3071},
|
|
ServerHostKeys: []string{"ssh/gitea.rsa", "ssh/gogs.rsa"},
|
|
AuthorizedKeysCommandTemplate: "{{.AppPath}} --config={{.CustomConf}} serv key-{{.Key.ID}}",
|
|
PerWriteTimeout: PerWriteTimeout,
|
|
PerWritePerKbTimeout: PerWritePerKbTimeout,
|
|
}
|
|
|
|
func parseAuthorizedPrincipalsAllow(values []string) ([]string, bool) {
|
|
anything := false
|
|
email := false
|
|
username := false
|
|
for _, value := range values {
|
|
v := strings.ToLower(strings.TrimSpace(value))
|
|
switch v {
|
|
case "off":
|
|
return []string{"off"}, false
|
|
case "email":
|
|
email = true
|
|
case "username":
|
|
username = true
|
|
case "anything":
|
|
anything = true
|
|
}
|
|
}
|
|
if anything {
|
|
return []string{"anything"}, true
|
|
}
|
|
|
|
authorizedPrincipalsAllow := []string{}
|
|
if username {
|
|
authorizedPrincipalsAllow = append(authorizedPrincipalsAllow, "username")
|
|
}
|
|
if email {
|
|
authorizedPrincipalsAllow = append(authorizedPrincipalsAllow, "email")
|
|
}
|
|
|
|
return authorizedPrincipalsAllow, true
|
|
}
|
|
|
|
func loadSSHFrom(rootCfg ConfigProvider) {
|
|
sec := rootCfg.Section("server")
|
|
if len(SSH.Domain) == 0 {
|
|
SSH.Domain = Domain
|
|
}
|
|
|
|
homeDir, err := util.HomeDir()
|
|
if err != nil {
|
|
log.Fatal("Failed to get home directory: %v", err)
|
|
}
|
|
homeDir = strings.ReplaceAll(homeDir, "\\", "/")
|
|
|
|
SSH.RootPath = path.Join(homeDir, ".ssh")
|
|
serverCiphers := sec.Key("SSH_SERVER_CIPHERS").Strings(",")
|
|
if len(serverCiphers) > 0 {
|
|
SSH.ServerCiphers = serverCiphers
|
|
}
|
|
serverKeyExchanges := sec.Key("SSH_SERVER_KEY_EXCHANGES").Strings(",")
|
|
if len(serverKeyExchanges) > 0 {
|
|
SSH.ServerKeyExchanges = serverKeyExchanges
|
|
}
|
|
serverMACs := sec.Key("SSH_SERVER_MACS").Strings(",")
|
|
if len(serverMACs) > 0 {
|
|
SSH.ServerMACs = serverMACs
|
|
}
|
|
SSH.KeyTestPath = os.TempDir()
|
|
if err = sec.MapTo(&SSH); err != nil {
|
|
log.Fatal("Failed to map SSH settings: %v", err)
|
|
}
|
|
for i, key := range SSH.ServerHostKeys {
|
|
if !filepath.IsAbs(key) {
|
|
SSH.ServerHostKeys[i] = filepath.Join(AppDataPath, key)
|
|
}
|
|
}
|
|
|
|
SSH.KeygenPath = sec.Key("SSH_KEYGEN_PATH").String()
|
|
SSH.Port = sec.Key("SSH_PORT").MustInt(22)
|
|
SSH.ListenPort = sec.Key("SSH_LISTEN_PORT").MustInt(SSH.Port)
|
|
SSH.UseProxyProtocol = sec.Key("SSH_SERVER_USE_PROXY_PROTOCOL").MustBool(false)
|
|
|
|
// When disable SSH, start builtin server value is ignored.
|
|
if SSH.Disabled {
|
|
SSH.StartBuiltinServer = false
|
|
}
|
|
|
|
SSH.TrustedUserCAKeysFile = sec.Key("SSH_TRUSTED_USER_CA_KEYS_FILENAME").MustString(filepath.Join(SSH.RootPath, "gitea-trusted-user-ca-keys.pem"))
|
|
|
|
for _, caKey := range SSH.TrustedUserCAKeys {
|
|
pubKey, _, _, _, err := gossh.ParseAuthorizedKey([]byte(caKey))
|
|
if err != nil {
|
|
log.Fatal("Failed to parse TrustedUserCaKeys: %s %v", caKey, err)
|
|
}
|
|
|
|
SSH.TrustedUserCAKeysParsed = append(SSH.TrustedUserCAKeysParsed, pubKey)
|
|
}
|
|
if len(SSH.TrustedUserCAKeys) > 0 {
|
|
// Set the default as email,username otherwise we can leave it empty
|
|
sec.Key("SSH_AUTHORIZED_PRINCIPALS_ALLOW").MustString("username,email")
|
|
} else {
|
|
sec.Key("SSH_AUTHORIZED_PRINCIPALS_ALLOW").MustString("off")
|
|
}
|
|
|
|
SSH.AuthorizedPrincipalsAllow, SSH.AuthorizedPrincipalsEnabled = parseAuthorizedPrincipalsAllow(sec.Key("SSH_AUTHORIZED_PRINCIPALS_ALLOW").Strings(","))
|
|
|
|
SSH.MinimumKeySizeCheck = sec.Key("MINIMUM_KEY_SIZE_CHECK").MustBool(SSH.MinimumKeySizeCheck)
|
|
minimumKeySizes := rootCfg.Section("ssh.minimum_key_sizes").Keys()
|
|
for _, key := range minimumKeySizes {
|
|
if key.MustInt() != -1 {
|
|
SSH.MinimumKeySizes[strings.ToLower(key.Name())] = key.MustInt()
|
|
} else {
|
|
delete(SSH.MinimumKeySizes, strings.ToLower(key.Name()))
|
|
}
|
|
}
|
|
|
|
SSH.AuthorizedKeysBackup = sec.Key("SSH_AUTHORIZED_KEYS_BACKUP").MustBool(false)
|
|
SSH.CreateAuthorizedKeysFile = sec.Key("SSH_CREATE_AUTHORIZED_KEYS_FILE").MustBool(true)
|
|
|
|
SSH.AuthorizedPrincipalsBackup = false
|
|
SSH.CreateAuthorizedPrincipalsFile = false
|
|
if SSH.AuthorizedPrincipalsEnabled {
|
|
SSH.AuthorizedPrincipalsBackup = sec.Key("SSH_AUTHORIZED_PRINCIPALS_BACKUP").MustBool(true)
|
|
SSH.CreateAuthorizedPrincipalsFile = sec.Key("SSH_CREATE_AUTHORIZED_PRINCIPALS_FILE").MustBool(true)
|
|
}
|
|
|
|
SSH.ExposeAnonymous = sec.Key("SSH_EXPOSE_ANONYMOUS").MustBool(false)
|
|
SSH.AuthorizedKeysCommandTemplate = sec.Key("SSH_AUTHORIZED_KEYS_COMMAND_TEMPLATE").MustString(SSH.AuthorizedKeysCommandTemplate)
|
|
|
|
SSH.AuthorizedKeysCommandTemplateTemplate = template.Must(template.New("").Parse(SSH.AuthorizedKeysCommandTemplate))
|
|
|
|
SSH.PerWriteTimeout = sec.Key("SSH_PER_WRITE_TIMEOUT").MustDuration(PerWriteTimeout)
|
|
SSH.PerWritePerKbTimeout = sec.Key("SSH_PER_WRITE_PER_KB_TIMEOUT").MustDuration(PerWritePerKbTimeout)
|
|
|
|
// ensure parseRunModeSetting has been executed before this
|
|
SSH.BuiltinServerUser = rootCfg.Section("server").Key("BUILTIN_SSH_SERVER_USER").MustString(RunUser)
|
|
SSH.User = rootCfg.Section("server").Key("SSH_USER").MustString(SSH.BuiltinServerUser)
|
|
}
|