Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** 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, version 3.

**

** 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 <https://www.gnu.org/licenses/>.

**/

​

package agent

​

import (

    "bytes"

    "errors"

    "fmt"

    "io"

    "os"

    "strings"

    "unicode"

    "unicode/utf8"

​

    "golang.zabbix.com/agent2/pkg/tls"

    "golang.zabbix.com/sdk/log"

    "golang.zabbix.com/sdk/plugin"

)

​

var Options AgentOptions

​

const (

    HostNameLen      = 128

    hostNameListLen  = 2048

    HostMetadataLen  = 65535 // UTF-8 characters, not bytes

    HostInterfaceLen = 255   // UTF-8 characters, not bytes

    Variant          = 2

)

​

var (

    errInvalidTLSConnect = errors.New("invalid TLSConnect configuration parameter")

    errInvalidTLSAccept  = errors.New("invalid TLSAccept configuration parameter")

    errCipherCertAndAll  = errors.New(`TLSCipherCert configuration parameter cannot be used when the combined list` +

        ` of certificate and PSK ciphersuites are used. Use TLSCipherAll to configure certificate ciphers`)

    errCipherCert13AndAll = errors.New(`TLSCipherCert13 configuration parameter cannot be used when the combined` +

        ` list of certificate and PSK ciphersuites are used. Use TLSCipherAll13 to configure certificate ciphers`)

    errCipherAllRedundant = errors.New(`parameter "TLSCipherAll" cannot be applied: the combined list of certificate` +

        ` and PSK ciphersuites is not used. Most likely parameters "TLSCipherCert" and/or "TLSCipherPSK"` +

        ` are sufficient`)

    errCipherAll13Redundant = errors.New(`parameter "TLSCipherAll13" cannot be applied: the combined list of` +

        ` certificate and PSK ciphersuites is not used. Most likely parameters "TLSCipherCert13" and/or` +

        ` "TLSCipherPSK13" are sufficient`)

    errMissingTLSPskIdentity    = errors.New("missing TLSPSKIdentity configuration parameter")

    errMissingTLSPskFile        = errors.New("missing TLSPSKFile configuration parameter")

    errTLSPSKIdentityWithoutPsk = errors.New("TLSPSKIdentity configuration parameter set without PSK being used")

    errTLSPSKFileWithoutPsk     = errors.New("TLSPSKFile configuration parameter set without PSK being used")

    errTLSCipherPSKWithoutPsk   = errors.New("TLSCipherPSK configuration parameter set without PSK being used")

    errTLSCipherPSK13WithoutPsk = errors.New("TLSCipherPSK13 configuration parameter set without PSK being used")

    errMissingTLSCAFile         = errors.New("missing TLSCAFile configuration parameter")

    errMissingTLSCertFile       = errors.New("missing TLSCertFile configuration parameter")

    errMissingTLSKeyFile        = errors.New("missing TLSKeyFile configuration parameter")