mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-25 19:15:34 +00:00
cmd/tailscale/cli, util/winutil/authenticode: flesh out authenticode support
Previously, tailscale upgrade was doing the bare minimum for checking authenticode signatures via `WinVerifyTrustEx`. This is fine, but we can do better: * WinVerifyTrustEx verifies that the binary's signature is valid, but it doesn't determine *whose* signature is valid; tailscale upgrade should also ensure that the binary is actually signed *by us*. * I added the ability to check the signatures of MSI files. * In future PRs I will be adding diagnostic logging that lists details about every module (ie, DLL) loaded into our process. As part of that metadata, I want to be able to extract information about who signed the binaries. This code is modelled on some C++ I wrote for Firefox back in the day. See https://searchfox.org/mozilla-central/rev/27e4816536c891d85d63695025f2549fd7976392/toolkit/xre/dllservices/mozglue/Authenticode.cpp for reference. Fixes #8284 Signed-off-by: Aaron Klotz <aaron@tailscale.com>
This commit is contained in:
Aaron Klotz
parent
ec9213a627
commit
7adf15f90e
@ -6,33 +6,15 @@
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package cli
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import (
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"unsafe"
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"golang.org/x/sys/windows"
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"tailscale.com/util/winutil/authenticode"
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)
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func init() {
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verifyAuthenticode = verifyAuthenticodeWindows
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verifyAuthenticode = verifyTailscale
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}
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func verifyAuthenticodeWindows(path string) error {
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path16, err := windows.UTF16PtrFromString(path)
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if err != nil {
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return err
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}
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data := &windows.WinTrustData{
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Size: uint32(unsafe.Sizeof(windows.WinTrustData{})),
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UIChoice: windows.WTD_UI_NONE,
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RevocationChecks: windows.WTD_REVOKE_WHOLECHAIN, // Full revocation checking, as this is called with network connectivity.
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UnionChoice: windows.WTD_CHOICE_FILE,
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StateAction: windows.WTD_STATEACTION_VERIFY,
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FileOrCatalogOrBlobOrSgnrOrCert: unsafe.Pointer(&windows.WinTrustFileInfo{
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Size: uint32(unsafe.Sizeof(windows.WinTrustFileInfo{})),
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FilePath: path16,
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}),
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}
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err = windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
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data.StateAction = windows.WTD_STATEACTION_CLOSE
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windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
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return err
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const certSubjectTailscale = "Tailscale Inc."
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func verifyTailscale(path string) error {
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return authenticode.Verify(path, certSubjectTailscale)
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}
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@ -11,6 +11,8 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
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W github.com/alexbrainman/sspi/internal/common from github.com/alexbrainman/sspi/negotiate
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W 💣 github.com/alexbrainman/sspi/negotiate from tailscale.com/net/tshttpproxy
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L github.com/coreos/go-iptables/iptables from tailscale.com/util/linuxfw
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W 💣 github.com/dblohm7/wingoes from tailscale.com/util/winutil/authenticode
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W 💣 github.com/dblohm7/wingoes/pe from tailscale.com/util/winutil/authenticode
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github.com/fxamacker/cbor/v2 from tailscale.com/tka
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github.com/golang/groupcache/lru from tailscale.com/net/dnscache
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L github.com/google/nftables from tailscale.com/util/linuxfw
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@ -66,7 +68,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
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tailscale.com/atomicfile from tailscale.com/ipn+
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tailscale.com/client/tailscale from tailscale.com/cmd/tailscale/cli+
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tailscale.com/client/tailscale/apitype from tailscale.com/cmd/tailscale/cli+
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💣 tailscale.com/cmd/tailscale/cli from tailscale.com/cmd/tailscale
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tailscale.com/cmd/tailscale/cli from tailscale.com/cmd/tailscale
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tailscale.com/control/controlbase from tailscale.com/control/controlhttp
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tailscale.com/control/controlhttp from tailscale.com/cmd/tailscale/cli
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tailscale.com/control/controlknobs from tailscale.com/net/portmapper
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@ -144,6 +146,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
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tailscale.com/util/singleflight from tailscale.com/net/dnscache
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tailscale.com/util/slicesx from tailscale.com/net/dnscache+
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💣 tailscale.com/util/winutil from tailscale.com/hostinfo+
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W 💣 tailscale.com/util/winutil/authenticode from tailscale.com/cmd/tailscale/cli
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tailscale.com/version from tailscale.com/cmd/tailscale/cli+
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tailscale.com/version/distro from tailscale.com/cmd/tailscale/cli+
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tailscale.com/wgengine/capture from tailscale.com/cmd/tailscale/cli
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@ -194,7 +197,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
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bytes from bufio+
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compress/flate from compress/gzip+
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compress/gzip from net/http
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compress/zlib from image/png
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compress/zlib from image/png+
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container/list from crypto/tls+
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context from crypto/tls+
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crypto from crypto/ecdsa+
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@ -219,6 +222,8 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
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crypto/x509 from crypto/tls+
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crypto/x509/pkix from crypto/x509+
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database/sql/driver from github.com/google/uuid
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W debug/dwarf from debug/pe
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W debug/pe from github.com/dblohm7/wingoes/pe
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embed from tailscale.com/cmd/tailscale/cli+
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encoding from encoding/json+
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encoding/asn1 from crypto/x509+
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2
go.mod
2
go.mod
@ -18,7 +18,7 @@ require (
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github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf
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github.com/creack/pty v1.1.18
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github.com/dave/jennifer v1.6.1
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github.com/dblohm7/wingoes v0.0.0-20230426155039-111c8c3b57c8
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github.com/dblohm7/wingoes v0.0.0-20230801195049-ed8077baf0cd
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github.com/dsnet/try v0.0.3
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github.com/evanw/esbuild v0.14.53
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github.com/frankban/quicktest v1.14.5
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4
go.sum
4
go.sum
@ -240,8 +240,8 @@ github.com/dave/jennifer v1.6.1/go.mod h1:nXbxhEmQfOZhWml3D1cDK5M1FLnMSozpbFN/m3
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/dblohm7/wingoes v0.0.0-20230426155039-111c8c3b57c8 h1:vtIE3GO4hKplR58aTRx3yLPqAbfWyoyYrE8PXUv0Prw=
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github.com/dblohm7/wingoes v0.0.0-20230426155039-111c8c3b57c8/go.mod h1:6NCrWM5jRefaG7iN0iMShPalLsljHWBh9v1zxM2f8Xs=
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github.com/dblohm7/wingoes v0.0.0-20230801195049-ed8077baf0cd h1:zYVpYS5d3Uf04vVCJuzqpOCwQQIzJibtOx8ivt7zt2Q=
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github.com/dblohm7/wingoes v0.0.0-20230801195049-ed8077baf0cd/go.mod h1:6NCrWM5jRefaG7iN0iMShPalLsljHWBh9v1zxM2f8Xs=
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github.com/denis-tingaikin/go-header v0.4.3 h1:tEaZKAlqql6SKCY++utLmkPLd6K8IBM20Ha7UVm+mtU=
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github.com/denis-tingaikin/go-header v0.4.3/go.mod h1:0wOCWuN71D5qIgE2nz9KrKmuYBAC2Mra5RassOIQ2/c=
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github.com/denis-tingajkin/go-header v0.3.1/go.mod h1:sq/2IxMhaZX+RRcgHfCRx/m0M5na0fBt4/CRe7Lrji0=
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512
util/winutil/authenticode/authenticode_windows.go
Normal file
512
util/winutil/authenticode/authenticode_windows.go
Normal file
@ -0,0 +1,512 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package authenticode
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import (
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"encoding/hex"
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"errors"
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"fmt"
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"path/filepath"
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"strings"
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"unsafe"
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"github.com/dblohm7/wingoes"
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"github.com/dblohm7/wingoes/pe"
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"golang.org/x/sys/windows"
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)
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var (
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// ErrSigNotFound is returned if no authenticode signature could be found.
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ErrSigNotFound = errors.New("authenticode signature not found")
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// ErrUnexpectedCertSubject is wrapped with the actual cert subject and
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// returned when the binary is signed by a different subject than expected.
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ErrUnexpectedCertSubject = errors.New("unexpected cert subject")
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errCertSubjectNotFound = errors.New("cert subject not found")
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errCertSubjectDecodeLenMismatch = errors.New("length mismatch while decoding cert subject")
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)
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const (
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_CERT_STRONG_SIGN_OID_INFO_CHOICE = 2
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_CMSG_SIGNER_CERT_INFO_PARAM = 7
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_MSI_INVALID_HASH_IS_FATAL = 1
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_TRUST_E_NOSIGNATURE = wingoes.HRESULT(-((0x800B0100 ^ 0xFFFFFFFF) + 1))
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)
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// Verify performs authenticode verification on the file at path, and also
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// ensures that expectedCertSubject was the entity who signed it. path may point
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// to either a PE binary or an MSI package. ErrSigNotFound is returned if no
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// signature is found.
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func Verify(path string, expectedCertSubject string) error {
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path16, err := windows.UTF16PtrFromString(path)
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if err != nil {
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return err
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}
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var subject string
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if strings.EqualFold(filepath.Ext(path), ".msi") {
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subject, err = verifyMSI(path16)
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} else {
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subject, _, err = queryPE(path16, true)
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}
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if err != nil {
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return err
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}
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if subject != expectedCertSubject {
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return fmt.Errorf("%w %q", ErrUnexpectedCertSubject, subject)
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}
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return nil
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}
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// SigProvenance indicates whether an authenticode signature was embedded within
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// the file itself, or the signature applies to an associated catalog file.
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type SigProvenance int
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const (
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SigProvUnknown = SigProvenance(iota)
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SigProvEmbedded
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SigProvCatalog
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)
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// QueryCertSubject obtains the subject associated with the certificate used to
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// sign the PE binary located at path. When err == nil, it also returns the
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// provenance of that signature. ErrSigNotFound is returned if no signature
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// is found. Note that this function does *not* validate the chain of trust; use
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// Verify for that purpose!
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func QueryCertSubject(path string) (certSubject string, provenance SigProvenance, err error) {
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path16, err := windows.UTF16PtrFromString(path)
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if err != nil {
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return "", SigProvUnknown, err
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}
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return queryPE(path16, false)
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}
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func queryPE(utf16Path *uint16, verify bool) (string, SigProvenance, error) {
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certSubject, err := queryEmbeddedCertSubject(utf16Path, verify)
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switch {
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case err == ErrSigNotFound:
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// Try looking for the signature in a catalog file.
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default:
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return certSubject, SigProvEmbedded, err
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}
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certSubject, err = queryCatalogCertSubject(utf16Path, verify)
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switch {
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case err == ErrSigNotFound:
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return "", SigProvUnknown, err
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default:
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return certSubject, SigProvCatalog, err
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}
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}
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type CertSubjectError struct {
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Err error
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Subject string
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}
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func (e *CertSubjectError) Error() string {
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if e == nil {
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return "<nil>"
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}
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if e.Subject == "" {
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return e.Err.Error()
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}
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return fmt.Sprintf("cert subject %q: %v", e.Subject, e.Err)
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}
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func (e *CertSubjectError) Unwrap() error {
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return e.Err
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}
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func verifyMSI(path *uint16) (string, error) {
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var certCtx *windows.CertContext
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hr := msiGetFileSignatureInformation(path, _MSI_INVALID_HASH_IS_FATAL, &certCtx, nil, nil)
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if e := wingoes.ErrorFromHRESULT(hr); e.Failed() {
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if e == wingoes.ErrorFromHRESULT(_TRUST_E_NOSIGNATURE) {
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return "", ErrSigNotFound
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}
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return "", e
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}
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defer windows.CertFreeCertificateContext(certCtx)
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return certSubjectFromCertContext(certCtx)
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}
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func certSubjectFromCertContext(certCtx *windows.CertContext) (string, error) {
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desiredLen := windows.CertGetNameString(
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certCtx,
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windows.CERT_NAME_SIMPLE_DISPLAY_TYPE,
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0,
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nil,
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nil,
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0,
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)
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if desiredLen <= 1 {
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return "", errCertSubjectNotFound
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}
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buf := make([]uint16, desiredLen)
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actualLen := windows.CertGetNameString(
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certCtx,
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windows.CERT_NAME_SIMPLE_DISPLAY_TYPE,
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0,
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nil,
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&buf[0],
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desiredLen,
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)
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if actualLen != desiredLen {
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return "", errCertSubjectDecodeLenMismatch
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}
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return windows.UTF16ToString(buf), nil
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}
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type objectQuery struct {
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certStore windows.Handle
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cryptMsg windows.Handle
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encodingType uint32
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}
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func newObjectQuery(utf16Path *uint16) (*objectQuery, error) {
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var oq objectQuery
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if err := windows.CryptQueryObject(
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windows.CERT_QUERY_OBJECT_FILE,
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unsafe.Pointer(utf16Path),
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windows.CERT_QUERY_CONTENT_FLAG_PKCS7_SIGNED_EMBED,
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windows.CERT_QUERY_FORMAT_FLAG_BINARY,
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0,
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&oq.encodingType,
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nil,
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nil,
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&oq.certStore,
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&oq.cryptMsg,
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nil,
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); err != nil {
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return nil, err
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}
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return &oq, nil
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}
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func (oq *objectQuery) Close() error {
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if oq.certStore != 0 {
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if err := windows.CertCloseStore(oq.certStore, 0); err != nil {
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return err
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}
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oq.certStore = 0
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}
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if oq.cryptMsg != 0 {
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if err := cryptMsgClose(oq.cryptMsg); err != nil {
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return err
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}
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oq.cryptMsg = 0
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}
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return nil
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}
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|
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func (oq *objectQuery) certSubject() (string, error) {
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var certInfoLen uint32
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if err := cryptMsgGetParam(
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oq.cryptMsg,
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_CMSG_SIGNER_CERT_INFO_PARAM,
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0,
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unsafe.Pointer(nil),
|
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&certInfoLen,
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); err != nil {
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return "", err
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}
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|
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buf := make([]byte, certInfoLen)
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if err := cryptMsgGetParam(
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oq.cryptMsg,
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_CMSG_SIGNER_CERT_INFO_PARAM,
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0,
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unsafe.Pointer(&buf[0]),
|
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&certInfoLen,
|
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); err != nil {
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return "", err
|
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}
|
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|
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certInfo := (*windows.CertInfo)(unsafe.Pointer(&buf[0]))
|
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certCtx, err := windows.CertFindCertificateInStore(
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oq.certStore,
|
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oq.encodingType,
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0,
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windows.CERT_FIND_SUBJECT_CERT,
|
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unsafe.Pointer(certInfo),
|
||||
nil,
|
||||
)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer windows.CertFreeCertificateContext(certCtx)
|
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|
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return certSubjectFromCertContext(certCtx)
|
||||
}
|
||||
|
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func extractCertBlob(hfile windows.Handle) ([]byte, error) {
|
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pef, err := pe.NewPEFromFileHandle(hfile)
|
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if err != nil {
|
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return nil, err
|
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}
|
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defer pef.Close()
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|
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certsAny, err := pef.DataDirectoryEntry(pe.IMAGE_DIRECTORY_ENTRY_SECURITY)
|
||||
if err != nil {
|
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return nil, err
|
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}
|
||||
|
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certs, ok := certsAny.([]pe.AuthenticodeCert)
|
||||
if !ok || len(certs) == 0 {
|
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return nil, ErrSigNotFound
|
||||
}
|
||||
|
||||
for _, cert := range certs {
|
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if cert.Revision() != pe.WIN_CERT_REVISION_2_0 || cert.Type() != pe.WIN_CERT_TYPE_PKCS_SIGNED_DATA {
|
||||
continue
|
||||
}
|
||||
return cert.Data(), nil
|
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}
|
||||
|
||||
return nil, ErrSigNotFound
|
||||
}
|
||||
|
||||
type _HCRYPTPROV windows.Handle
|
||||
|
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type _CRYPT_VERIFY_MESSAGE_PARA struct {
|
||||
CBSize uint32
|
||||
MsgAndCertEncodingType uint32
|
||||
HCryptProv _HCRYPTPROV
|
||||
FNGetSignerCertificate uintptr
|
||||
GetArg uintptr
|
||||
StrongSignPara *windows.CertStrongSignPara
|
||||
}
|
||||
|
||||
func querySubjectFromBlob(blob []byte) (string, error) {
|
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para := _CRYPT_VERIFY_MESSAGE_PARA{
|
||||
CBSize: uint32(unsafe.Sizeof(_CRYPT_VERIFY_MESSAGE_PARA{})),
|
||||
MsgAndCertEncodingType: windows.X509_ASN_ENCODING | windows.PKCS_7_ASN_ENCODING,
|
||||
}
|
||||
|
||||
var certCtx *windows.CertContext
|
||||
if err := cryptVerifyMessageSignature(¶, 0, &blob[0], uint32(len(blob)), nil, nil, &certCtx); err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer windows.CertFreeCertificateContext(certCtx)
|
||||
|
||||
return certSubjectFromCertContext(certCtx)
|
||||
}
|
||||
|
||||
func queryEmbeddedCertSubject(utf16Path *uint16, verify bool) (string, error) {
|
||||
peBinary, err := windows.CreateFile(
|
||||
utf16Path,
|
||||
windows.GENERIC_READ,
|
||||
windows.FILE_SHARE_READ,
|
||||
nil,
|
||||
windows.OPEN_EXISTING,
|
||||
0,
|
||||
0,
|
||||
)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer windows.CloseHandle(peBinary)
|
||||
|
||||
blob, err := extractCertBlob(peBinary)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
certSubj, err := querySubjectFromBlob(blob)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
if !verify {
|
||||
return certSubj, nil
|
||||
}
|
||||
|
||||
wintrustArg := unsafe.Pointer(&windows.WinTrustFileInfo{
|
||||
Size: uint32(unsafe.Sizeof(windows.WinTrustFileInfo{})),
|
||||
FilePath: utf16Path,
|
||||
File: peBinary,
|
||||
})
|
||||
if err := verifyTrust(windows.WTD_CHOICE_FILE, wintrustArg); err != nil {
|
||||
// We might still want to know who the cert subject claims to be
|
||||
// even if the validation has failed (eg for troubleshooting purposes),
|
||||
// so we return a CertSubjectError.
|
||||
return "", &CertSubjectError{Err: err, Subject: certSubj}
|
||||
}
|
||||
|
||||
return certSubj, nil
|
||||
}
|
||||
|
||||
var (
|
||||
_BCRYPT_SHA256_ALGORITHM = &([]uint16{'S', 'H', 'A', '2', '5', '6', 0})[0]
|
||||
_OID_CERT_STRONG_SIGN_OS_1 = &([]byte("1.3.6.1.4.1.311.72.1.1\x00"))[0]
|
||||
)
|
||||
|
||||
type _HCATADMIN windows.Handle
|
||||
type _HCATINFO windows.Handle
|
||||
|
||||
type _CATALOG_INFO struct {
|
||||
size uint32
|
||||
catalogFile [windows.MAX_PATH]uint16
|
||||
}
|
||||
|
||||
type _WINTRUST_CATALOG_INFO struct {
|
||||
size uint32
|
||||
catalogVersion uint32
|
||||
catalogFilePath *uint16
|
||||
memberTag *uint16
|
||||
memberFilePath *uint16
|
||||
memberFile windows.Handle
|
||||
pCalculatedFileHash *byte
|
||||
cbCalculatedFileHash uint32
|
||||
catalogContext uintptr
|
||||
catAdmin _HCATADMIN
|
||||
}
|
||||
|
||||
func queryCatalogCertSubject(utf16Path *uint16, verify bool) (string, error) {
|
||||
var catAdmin _HCATADMIN
|
||||
policy := windows.CertStrongSignPara{
|
||||
Size: uint32(unsafe.Sizeof(windows.CertStrongSignPara{})),
|
||||
InfoChoice: _CERT_STRONG_SIGN_OID_INFO_CHOICE,
|
||||
InfoOrSerializedInfoOrOID: unsafe.Pointer(_OID_CERT_STRONG_SIGN_OS_1),
|
||||
}
|
||||
if err := cryptCATAdminAcquireContext2(
|
||||
&catAdmin,
|
||||
nil,
|
||||
_BCRYPT_SHA256_ALGORITHM,
|
||||
&policy,
|
||||
0,
|
||||
); err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer cryptCATAdminReleaseContext(catAdmin, 0)
|
||||
|
||||
// We use windows.CreateFile instead of standard library facilities because:
|
||||
// 1. Subsequent API calls directly utilize the file's Win32 HANDLE;
|
||||
// 2. We're going to be hashing the contents of this file, so we want to
|
||||
// provide a sequential-scan hint to the kernel.
|
||||
memberFile, err := windows.CreateFile(
|
||||
utf16Path,
|
||||
windows.GENERIC_READ,
|
||||
windows.FILE_SHARE_READ,
|
||||
nil,
|
||||
windows.OPEN_EXISTING,
|
||||
windows.FILE_FLAG_SEQUENTIAL_SCAN,
|
||||
0,
|
||||
)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer windows.CloseHandle(memberFile)
|
||||
|
||||
var hashLen uint32
|
||||
if err := cryptCATAdminCalcHashFromFileHandle2(
|
||||
catAdmin,
|
||||
memberFile,
|
||||
&hashLen,
|
||||
nil,
|
||||
0,
|
||||
); err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
hashBuf := make([]byte, hashLen)
|
||||
if err := cryptCATAdminCalcHashFromFileHandle2(
|
||||
catAdmin,
|
||||
memberFile,
|
||||
&hashLen,
|
||||
&hashBuf[0],
|
||||
0,
|
||||
); err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
catInfoCtx, err := cryptCATAdminEnumCatalogFromHash(
|
||||
catAdmin,
|
||||
&hashBuf[0],
|
||||
hashLen,
|
||||
0,
|
||||
nil,
|
||||
)
|
||||
if err != nil {
|
||||
if err == windows.ERROR_NOT_FOUND {
|
||||
err = ErrSigNotFound
|
||||
}
|
||||
return "", err
|
||||
}
|
||||
defer cryptCATAdminReleaseCatalogContext(catAdmin, catInfoCtx, 0)
|
||||
|
||||
catInfo := _CATALOG_INFO{
|
||||
size: uint32(unsafe.Sizeof(_CATALOG_INFO{})),
|
||||
}
|
||||
if err := cryptCATAdminCatalogInfoFromContext(catInfoCtx, &catInfo, 0); err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
oq, err := newObjectQuery(&catInfo.catalogFile[0])
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer oq.Close()
|
||||
|
||||
certSubj, err := oq.certSubject()
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
if !verify {
|
||||
return certSubj, nil
|
||||
}
|
||||
|
||||
// memberTag is required to be formatted this way.
|
||||
hbh := strings.ToUpper(hex.EncodeToString(hashBuf))
|
||||
memberTag, err := windows.UTF16PtrFromString(hbh)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
wintrustArg := unsafe.Pointer(&_WINTRUST_CATALOG_INFO{
|
||||
size: uint32(unsafe.Sizeof(_WINTRUST_CATALOG_INFO{})),
|
||||
catalogFilePath: &catInfo.catalogFile[0],
|
||||
memberTag: memberTag,
|
||||
memberFilePath: utf16Path,
|
||||
memberFile: memberFile,
|
||||
catAdmin: catAdmin,
|
||||
})
|
||||
if err := verifyTrust(windows.WTD_CHOICE_CATALOG, wintrustArg); err != nil {
|
||||
// We might still want to know who the cert subject claims to be
|
||||
// even if the validation has failed (eg for troubleshooting purposes),
|
||||
// so we return a CertSubjectError.
|
||||
return "", &CertSubjectError{Err: err, Subject: certSubj}
|
||||
}
|
||||
|
||||
return certSubj, nil
|
||||
}
|
||||
|
||||
func verifyTrust(infoType uint32, info unsafe.Pointer) error {
|
||||
data := &windows.WinTrustData{
|
||||
Size: uint32(unsafe.Sizeof(windows.WinTrustData{})),
|
||||
UIChoice: windows.WTD_UI_NONE,
|
||||
RevocationChecks: windows.WTD_REVOKE_WHOLECHAIN, // Full revocation checking, as this is called with network connectivity.
|
||||
UnionChoice: infoType,
|
||||
StateAction: windows.WTD_STATEACTION_VERIFY,
|
||||
FileOrCatalogOrBlobOrSgnrOrCert: info,
|
||||
}
|
||||
err := windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
|
||||
|
||||
data.StateAction = windows.WTD_STATEACTION_CLOSE
|
||||
windows.WinVerifyTrustEx(windows.InvalidHWND, &windows.WINTRUST_ACTION_GENERIC_VERIFY_V2, data)
|
||||
|
||||
return err
|
||||
}
|
||||
18
util/winutil/authenticode/mksyscall.go
Normal file
18
util/winutil/authenticode/mksyscall.go
Normal file
@ -0,0 +1,18 @@
|
||||
// Copyright (c) Tailscale Inc & AUTHORS
|
||||
// SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
package authenticode
|
||||
|
||||
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go mksyscall.go
|
||||
//go:generate go run golang.org/x/tools/cmd/goimports -w zsyscall_windows.go
|
||||
|
||||
//sys cryptCATAdminAcquireContext2(hCatAdmin *_HCATADMIN, pgSubsystem *windows.GUID, hashAlgorithm *uint16, strongHashPolicy *windows.CertStrongSignPara, flags uint32) (err error) [int32(failretval)==0] = wintrust.CryptCATAdminAcquireContext2
|
||||
//sys cryptCATAdminCalcHashFromFileHandle2(hCatAdmin _HCATADMIN, file windows.Handle, pcbHash *uint32, pbHash *byte, flags uint32) (err error) [int32(failretval)==0] = wintrust.CryptCATAdminCalcHashFromFileHandle2
|
||||
//sys cryptCATAdminCatalogInfoFromContext(hCatInfo _HCATINFO, catInfo *_CATALOG_INFO, flags uint32) (err error) [int32(failretval)==0] = wintrust.CryptCATCatalogInfoFromContext
|
||||
//sys cryptCATAdminEnumCatalogFromHash(hCatAdmin _HCATADMIN, pbHash *byte, cbHash uint32, flags uint32, prevCatInfo *_HCATINFO) (ret _HCATINFO, err error) [ret==0] = wintrust.CryptCATAdminEnumCatalogFromHash
|
||||
//sys cryptCATAdminReleaseCatalogContext(hCatAdmin _HCATADMIN, hCatInfo _HCATINFO, flags uint32) (err error) [int32(failretval)==0] = wintrust.CryptCATAdminReleaseCatalogContext
|
||||
//sys cryptCATAdminReleaseContext(hCatAdmin _HCATADMIN, flags uint32) (err error) [int32(failretval)==0] = wintrust.CryptCATAdminReleaseContext
|
||||
//sys cryptMsgClose(cryptMsg windows.Handle) (err error) [int32(failretval)==0] = crypt32.CryptMsgClose
|
||||
//sys cryptMsgGetParam(cryptMsg windows.Handle, paramType uint32, index uint32, data unsafe.Pointer, dataLen *uint32) (err error) [int32(failretval)==0] = crypt32.CryptMsgGetParam
|
||||
//sys cryptVerifyMessageSignature(pVerifyPara *_CRYPT_VERIFY_MESSAGE_PARA, signerIndex uint32, pbSignedBlob *byte, cbSignedBlob uint32, pbDecoded *byte, pdbDecoded *uint32, ppSignerCert **windows.CertContext) (err error) [int32(failretval)==0] = crypt32.CryptVerifyMessageSignature
|
||||
//sys msiGetFileSignatureInformation(signedObjectPath *uint16, flags uint32, certCtx **windows.CertContext, pbHashData *byte, cbHashData *uint32) (ret wingoes.HRESULT) = msi.MsiGetFileSignatureInformationW
|
||||
135
util/winutil/authenticode/zsyscall_windows.go
Normal file
135
util/winutil/authenticode/zsyscall_windows.go
Normal file
@ -0,0 +1,135 @@
|
||||
// Code generated by 'go generate'; DO NOT EDIT.
|
||||
|
||||
package authenticode
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
"unsafe"
|
||||
|
||||
"github.com/dblohm7/wingoes"
|
||||
"golang.org/x/sys/windows"
|
||||
)
|
||||
|
||||
var _ unsafe.Pointer
|
||||
|
||||
// Do the interface allocations only once for common
|
||||
// Errno values.
|
||||
const (
|
||||
errnoERROR_IO_PENDING = 997
|
||||
)
|
||||
|
||||
var (
|
||||
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
|
||||
errERROR_EINVAL error = syscall.EINVAL
|
||||
)
|
||||
|
||||
// errnoErr returns common boxed Errno values, to prevent
|
||||
// allocations at runtime.
|
||||
func errnoErr(e syscall.Errno) error {
|
||||
switch e {
|
||||
case 0:
|
||||
return errERROR_EINVAL
|
||||
case errnoERROR_IO_PENDING:
|
||||
return errERROR_IO_PENDING
|
||||
}
|
||||
// TODO: add more here, after collecting data on the common
|
||||
// error values see on Windows. (perhaps when running
|
||||
// all.bat?)
|
||||
return e
|
||||
}
|
||||
|
||||
var (
|
||||
modcrypt32 = windows.NewLazySystemDLL("crypt32.dll")
|
||||
modmsi = windows.NewLazySystemDLL("msi.dll")
|
||||
modwintrust = windows.NewLazySystemDLL("wintrust.dll")
|
||||
|
||||
procCryptMsgClose = modcrypt32.NewProc("CryptMsgClose")
|
||||
procCryptMsgGetParam = modcrypt32.NewProc("CryptMsgGetParam")
|
||||
procCryptVerifyMessageSignature = modcrypt32.NewProc("CryptVerifyMessageSignature")
|
||||
procMsiGetFileSignatureInformationW = modmsi.NewProc("MsiGetFileSignatureInformationW")
|
||||
procCryptCATAdminAcquireContext2 = modwintrust.NewProc("CryptCATAdminAcquireContext2")
|
||||
procCryptCATAdminCalcHashFromFileHandle2 = modwintrust.NewProc("CryptCATAdminCalcHashFromFileHandle2")
|
||||
procCryptCATAdminEnumCatalogFromHash = modwintrust.NewProc("CryptCATAdminEnumCatalogFromHash")
|
||||
procCryptCATAdminReleaseCatalogContext = modwintrust.NewProc("CryptCATAdminReleaseCatalogContext")
|
||||
procCryptCATAdminReleaseContext = modwintrust.NewProc("CryptCATAdminReleaseContext")
|
||||
procCryptCATCatalogInfoFromContext = modwintrust.NewProc("CryptCATCatalogInfoFromContext")
|
||||
)
|
||||
|
||||
func cryptMsgClose(cryptMsg windows.Handle) (err error) {
|
||||
r1, _, e1 := syscall.Syscall(procCryptMsgClose.Addr(), 1, uintptr(cryptMsg), 0, 0)
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func cryptMsgGetParam(cryptMsg windows.Handle, paramType uint32, index uint32, data unsafe.Pointer, dataLen *uint32) (err error) {
|
||||
r1, _, e1 := syscall.Syscall6(procCryptMsgGetParam.Addr(), 5, uintptr(cryptMsg), uintptr(paramType), uintptr(index), uintptr(data), uintptr(unsafe.Pointer(dataLen)), 0)
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func cryptVerifyMessageSignature(pVerifyPara *_CRYPT_VERIFY_MESSAGE_PARA, signerIndex uint32, pbSignedBlob *byte, cbSignedBlob uint32, pbDecoded *byte, pdbDecoded *uint32, ppSignerCert **windows.CertContext) (err error) {
|
||||
r1, _, e1 := syscall.Syscall9(procCryptVerifyMessageSignature.Addr(), 7, uintptr(unsafe.Pointer(pVerifyPara)), uintptr(signerIndex), uintptr(unsafe.Pointer(pbSignedBlob)), uintptr(cbSignedBlob), uintptr(unsafe.Pointer(pbDecoded)), uintptr(unsafe.Pointer(pdbDecoded)), uintptr(unsafe.Pointer(ppSignerCert)), 0, 0)
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func msiGetFileSignatureInformation(signedObjectPath *uint16, flags uint32, certCtx **windows.CertContext, pbHashData *byte, cbHashData *uint32) (ret wingoes.HRESULT) {
|
||||
r0, _, _ := syscall.Syscall6(procMsiGetFileSignatureInformationW.Addr(), 5, uintptr(unsafe.Pointer(signedObjectPath)), uintptr(flags), uintptr(unsafe.Pointer(certCtx)), uintptr(unsafe.Pointer(pbHashData)), uintptr(unsafe.Pointer(cbHashData)), 0)
|
||||
ret = wingoes.HRESULT(r0)
|
||||
return
|
||||
}
|
||||
|
||||
func cryptCATAdminAcquireContext2(hCatAdmin *_HCATADMIN, pgSubsystem *windows.GUID, hashAlgorithm *uint16, strongHashPolicy *windows.CertStrongSignPara, flags uint32) (err error) {
|
||||
r1, _, e1 := syscall.Syscall6(procCryptCATAdminAcquireContext2.Addr(), 5, uintptr(unsafe.Pointer(hCatAdmin)), uintptr(unsafe.Pointer(pgSubsystem)), uintptr(unsafe.Pointer(hashAlgorithm)), uintptr(unsafe.Pointer(strongHashPolicy)), uintptr(flags), 0)
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func cryptCATAdminCalcHashFromFileHandle2(hCatAdmin _HCATADMIN, file windows.Handle, pcbHash *uint32, pbHash *byte, flags uint32) (err error) {
|
||||
r1, _, e1 := syscall.Syscall6(procCryptCATAdminCalcHashFromFileHandle2.Addr(), 5, uintptr(hCatAdmin), uintptr(file), uintptr(unsafe.Pointer(pcbHash)), uintptr(unsafe.Pointer(pbHash)), uintptr(flags), 0)
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func cryptCATAdminEnumCatalogFromHash(hCatAdmin _HCATADMIN, pbHash *byte, cbHash uint32, flags uint32, prevCatInfo *_HCATINFO) (ret _HCATINFO, err error) {
|
||||
r0, _, e1 := syscall.Syscall6(procCryptCATAdminEnumCatalogFromHash.Addr(), 5, uintptr(hCatAdmin), uintptr(unsafe.Pointer(pbHash)), uintptr(cbHash), uintptr(flags), uintptr(unsafe.Pointer(prevCatInfo)), 0)
|
||||
ret = _HCATINFO(r0)
|
||||
if ret == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func cryptCATAdminReleaseCatalogContext(hCatAdmin _HCATADMIN, hCatInfo _HCATINFO, flags uint32) (err error) {
|
||||
r1, _, e1 := syscall.Syscall(procCryptCATAdminReleaseCatalogContext.Addr(), 3, uintptr(hCatAdmin), uintptr(hCatInfo), uintptr(flags))
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func cryptCATAdminReleaseContext(hCatAdmin _HCATADMIN, flags uint32) (err error) {
|
||||
r1, _, e1 := syscall.Syscall(procCryptCATAdminReleaseContext.Addr(), 2, uintptr(hCatAdmin), uintptr(flags), 0)
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func cryptCATAdminCatalogInfoFromContext(hCatInfo _HCATINFO, catInfo *_CATALOG_INFO, flags uint32) (err error) {
|
||||
r1, _, e1 := syscall.Syscall(procCryptCATCatalogInfoFromContext.Addr(), 3, uintptr(hCatInfo), uintptr(unsafe.Pointer(catInfo)), uintptr(flags))
|
||||
if int32(r1) == 0 {
|
||||
err = errnoErr(e1)
|
||||
}
|
||||
return
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user