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67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
// -*- Mode: Go; indent-tabs-mode: t -*-
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/*
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* Copyright (C) 2020 Canonical Ltd
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 3 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package builtin
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// https://www.kernel.org/doc/html/latest/crypto/userspace-if.html
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// https://www.kernel.org/doc/html/latest/crypto/intro.html
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const kernelCryptoAPISummary = `allows access to the Linux kernel crypto API`
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// The kernel crypto API is designed to be used by any process (ie, using it
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// requires no special privileges). Since it provides a kernel surface and
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// has a CVE history, manually connect for now.
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const kernelCryptoAPIBaseDeclarationSlots = `
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kernel-crypto-api:
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allow-installation:
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slot-snap-type:
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- core
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deny-auto-connection: true
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`
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const kernelCryptoAPIConnectedPlugAppArmor = `
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# Description: Can access the Linux kernel crypto API
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@{PROC}/crypto r,
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# socket(AF_ALG, SOCK_SEQPACKET, ...)
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network alg seqpacket,
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# socket(AF_NETLINK, SOCK_{DGRAM,RAW}, NETLINK_CRYPTO)
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network netlink dgram,
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network netlink raw,
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`
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const kernelCryptoAPIConnectedPlugSeccomp = `
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# Description: Can access the Linux kernel crypto API
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socket AF_NETLINK - NETLINK_CRYPTO
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bind
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accept
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`
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func init() {
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registerIface(&commonInterface{
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name: "kernel-crypto-api",
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summary: kernelCryptoAPISummary,
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implicitOnCore: true,
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implicitOnClassic: true,
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connectedPlugAppArmor: kernelCryptoAPIConnectedPlugAppArmor,
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connectedPlugSecComp: kernelCryptoAPIConnectedPlugSeccomp,
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baseDeclarationSlots: kernelCryptoAPIBaseDeclarationSlots,
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})
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}
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