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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package config
import (
"fmt"
"net/netip"
"net/url"
"strings"
"github.com/miekg/dns"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/language"
"github.com/superseriousbusiness/gotosocial/internal/log"
)
// Validate validates global config settings.
func Validate() error {
// Gather all validation errors in
// easily readable format for admins.
var (
errs gtserror.MultiError
errf = func(format string, a ...any) {
errs = append(errs, fmt.Errorf(format, a...))
}
)
// `host`
host := GetHost()
if host == "" {
errf("%s must be set", HostFlag())
}
// If `account-domain` and `host`
// are set, `host` must be a valid
// subdomain of `account-domain`.
if host != "" {
ad := GetAccountDomain()
if ad == "" {
// `account-domain` not set, fall
// back by setting it to `host`.
SetAccountDomain(GetHost())
} else if !dns.IsSubDomain(ad, host) {
errf(
"%s %s is not a valid subdomain of %s %s",
AccountDomainFlag(), ad, HostFlag(), host,
)
}
}
// Ensure `protocol` sensibly set.
switch proto := GetProtocol(); proto {
case "https":
// No problem.
case "http":
log.Warnf(
nil,
"%s was set to 'http'; this should *only* be used for debugging and tests!",
ProtocolFlag(),
)
case "":
errf("%s must be set", ProtocolFlag())
default:
errf(
"%s must be set to either http or https, provided value was %s",
ProtocolFlag(), proto,
)
}
// `federation-mode` should be
// "blocklist" or "allowlist".
switch fediMode := GetInstanceFederationMode(); fediMode {
case InstanceFederationModeBlocklist, InstanceFederationModeAllowlist:
// No problem.
case "":
errf("%s must be set", InstanceFederationModeFlag())
default:
errf(
"%s must be set to either blocklist or allowlist, provided value was %s",
InstanceFederationModeFlag(), fediMode,
)
}
// Parse `instance-languages`, and
// set enriched version into config.
parsedLangs, err := language.InitLangs(GetInstanceLanguages().TagStrs())
if err != nil {
errf(
"%s could not be parsed as an array of valid BCP47 language tags: %v",
InstanceLanguagesFlag(), err,
)
} else {
// Parsed successfully, put enriched
// versions in config immediately.
SetInstanceLanguages(parsedLangs)
}
// `instance-stats-mode` should be
// "", "zero", "serve", or "baffle"
switch statsMode := GetInstanceStatsMode(); statsMode {
case InstanceStatsModeDefault, InstanceStatsModeZero, InstanceStatsModeServe, InstanceStatsModeBaffle:
// No problem.
default:
errf(
"%s must be set to empty string, zero, serve, or baffle, provided value was %s",
InstanceFederationModeFlag(), statsMode,
)
}
// `web-assets-base-dir`.
webAssetsBaseDir := GetWebAssetBaseDir()
if webAssetsBaseDir == "" {
errf("%s must be set", WebAssetBaseDirFlag())
}
// `storage-s3-redirect-url`
if s3RedirectURL := GetStorageS3RedirectURL(); s3RedirectURL != "" {
if strings.HasSuffix(s3RedirectURL, "/") {
errf(
"%s must not end with a trailing slash",
StorageS3RedirectURLFlag(),
)
}
if url, err := url.Parse(s3RedirectURL); err != nil {
errf(
"%s invalid: %w",
StorageS3RedirectURLFlag(), err,
)
} else if url.Scheme != "https" && url.Scheme != "http" {
errf(
"%s scheme must be https or http",
StorageS3RedirectURLFlag(),
)
}
}
// Custom / LE TLS settings.
//
// Only one of custom certs or LE can be set,
// and if using custom certs then all relevant
// values must be provided.
var (
tlsChain = GetTLSCertificateChain()
tlsKey = GetTLSCertificateKey()
tlsChainFlag = TLSCertificateChainFlag()
tlsKeyFlag = TLSCertificateKeyFlag()
)
if GetLetsEncryptEnabled() && (tlsChain != "" || tlsKey != "") {
errf(
"%s cannot be true when %s and/or %s are also set",
LetsEncryptEnabledFlag(), tlsChainFlag, tlsKeyFlag,
)
}
if (tlsChain != "" && tlsKey == "") || (tlsChain == "" && tlsKey != "") {
errf(
"%s and %s need to both be set or unset",
tlsChainFlag, tlsKeyFlag,
)
}
// Parse `advanced-rate-limit-exceptions` and set
// parsed versions on config to avoid reparsing calls.
rles := GetAdvancedRateLimitExceptions()
rlesParsed := make([]netip.Prefix, 0, len(rles))
for _, rle := range rles {
parsed, err := netip.ParsePrefix(rle)
if err != nil {
errf(
"invalid entry %s in %s: %w",
rle, AdvancedRateLimitExceptionsFlag(), err,
)
continue
}
rlesParsed = append(rlesParsed, parsed)
}
SetAdvancedRateLimitExceptionsParsed(rlesParsed)
return errs.Combine()
}
|
