diff --git a/.gitignore b/.gitignore index 8000dd9..90e7367 100644 --- a/.gitignore +++ b/.gitignore @@ -1 +1,4 @@ .vagrant +.idea +keyring +keyring.iml diff --git a/config.go b/config.go index 1c5d0f7..d5b7d67 100644 --- a/config.go +++ b/config.go @@ -47,6 +47,15 @@ type Config struct { // PassPrefix is a string prefix to prepend to the item path stored in pass PassPrefix string + // VaultAddress is a string address:port of the vault instance + VaultAddress string + + // VaultKey is a string key to access the vault instance + VaultToken string + + // VaultPrefix is a string prefix to prepend to the item path stored in pass + VaultPrefix string + // WinCredPrefix is a string prefix to prepend to the key name WinCredPrefix string } diff --git a/go.mod b/go.mod index 4310878..404f15f 100644 --- a/go.mod +++ b/go.mod @@ -7,6 +7,7 @@ require ( github.com/dvsekhvalnov/jose2go v0.0.0-20200901110807-248326c1351b github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2 github.com/gsterjov/go-libsecret v0.0.0-20161001094733-a6f4afe4910c + github.com/hashicorp/vault/api v1.0.4 github.com/keybase/go-keychain v0.0.0-20190712205309-48d3d31d256d github.com/kr/pretty v0.1.0 // indirect github.com/mtibben/percent v0.2.1 diff --git a/go.sum b/go.sum index 0fcb1b7..4a4bc9a 100644 --- a/go.sum +++ b/go.sum @@ -1,5 +1,11 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 h1:/vQbFIOMbk2FiG/kXiLl8BRyzTWDw7gX/Hz7Dd5eDMs= github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4/go.mod h1:hN7oaIRCjzsZ2dE+yG5k+rsdt3qcwykqK6HVGcKwsw4= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY= +github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8= +github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= github.com/danieljoos/wincred v1.0.2 h1:zf4bhty2iLuwgjgpraD2E9UbvO+fe54XXGJbOwe23fU= github.com/danieljoos/wincred v1.0.2/go.mod h1:SnuYRW9lp1oJrZX/dXJqr0cPK5gYXqx3EJbmjhLdK9U= github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8= @@ -8,33 +14,136 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/dvsekhvalnov/jose2go v0.0.0-20200901110807-248326c1351b h1:HBah4D48ypg3J7Np4N+HY/ZR76fx3HEUGxDU6Uk39oQ= github.com/dvsekhvalnov/jose2go v0.0.0-20200901110807-248326c1351b/go.mod h1:7BvyPhdbLxMXIYTFPLsyJRFMsKmOZnQmzh6Gb+uquuM= +github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4= +github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M= +github.com/go-ldap/ldap v3.0.2+incompatible/go.mod h1:qfd9rJvER9Q0/D/Sqn1DfHRoBp40uXYvFoEVrNEPqRc= +github.com/go-test/deep v1.0.2-0.20181118220953-042da051cf31/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA= github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2 h1:ZpnhV/YsD2/4cESfV5+Hoeu/iUR3ruzNvZ+yQfO03a0= github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2/go.mod h1:bBOAhwG1umN6/6ZUMtDFBMQR8jRg9O75tm9K00oMsK4= +github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= +github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= +github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4= +github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= +github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= github.com/gsterjov/go-libsecret v0.0.0-20161001094733-a6f4afe4910c h1:6rhixN/i8ZofjG1Y75iExal34USq5p+wiN1tpie8IrU= github.com/gsterjov/go-libsecret v0.0.0-20161001094733-a6f4afe4910c/go.mod h1:NMPJylDgVpX0MLRlPy15sqSwOFv/U1GZ2m21JhFfek0= +github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA= +github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4= +github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80= +github.com/hashicorp/go-cleanhttp v0.5.1 h1:dH3aiDG9Jvb5r5+bYHsikaOUIpcM0xvgMXVoDkXMzJM= +github.com/hashicorp/go-cleanhttp v0.5.1/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80= +github.com/hashicorp/go-hclog v0.0.0-20180709165350-ff2cf002a8dd/go.mod h1:9bjs9uLqI8l75knNv3lV1kA55veR+WUPSiKIWcQHudI= +github.com/hashicorp/go-hclog v0.8.0/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ= +github.com/hashicorp/go-immutable-radix v1.0.0/go.mod h1:0y9vanUI8NX6FsYoO3zeMjhV/C5i9g4Q3DwcSNZ4P60= +github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o= +github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk= +github.com/hashicorp/go-plugin v1.0.1/go.mod h1:++UyYGoz3o5w9ZzAdZxtQKrWWP+iqPBn3cQptSMzBuY= +github.com/hashicorp/go-retryablehttp v0.5.4 h1:1BZvpawXoJCWX6pNtow9+rpEj+3itIlutiqnntI6jOE= +github.com/hashicorp/go-retryablehttp v0.5.4/go.mod h1:9B5zBasrRhHXnJnui7y6sL7es7NDiJgTc6Er0maI1Xs= +github.com/hashicorp/go-rootcerts v1.0.1 h1:DMo4fmknnz0E0evoNYnV48RjWndOsmd6OW+09R3cEP8= +github.com/hashicorp/go-rootcerts v1.0.1/go.mod h1:pqUvnprVnM5bf7AOirdbb01K4ccR319Vf4pU3K5EGc8= +github.com/hashicorp/go-sockaddr v1.0.2 h1:ztczhD1jLxIRjVejw8gFomI1BQZOe2WoVOu0SyteCQc= +github.com/hashicorp/go-sockaddr v1.0.2/go.mod 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v0.1.13/go.mod h1:B+hVj7TpuQY1Y/GPbCpffmgd+tSEwvhkWnjtSYCaS2M= +github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM= +github.com/hashicorp/yamux v0.0.0-20181012175058-2f1d1f20f75d/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM= github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI= github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE= github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= +github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU= +github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4= +github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc= +github.com/mitchellh/copystructure 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h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/keyring.go b/keyring.go index 5349b6f..3546317 100644 --- a/keyring.go +++ b/keyring.go @@ -21,6 +21,7 @@ const ( WinCredBackend BackendType = "wincred" FileBackend BackendType = "file" PassBackend BackendType = "pass" + VaultBackend BackendType = "vault" ) // This order makes sure the OS-specific backends @@ -36,6 +37,7 @@ var backendOrder = []BackendType{ // General PassBackend, FileBackend, + VaultBackend, } var supportedBackends = map[BackendType]opener{} diff --git a/vault.go b/vault.go new file mode 100644 index 0000000..3647748 --- /dev/null +++ b/vault.go @@ -0,0 +1,275 @@ +package keyring + +import ( + "encoding/base64" + "encoding/json" + "fmt" + "github.com/hashicorp/vault/api" + path2 "path" + "strings" +) + +type vaultKeyring struct { + vault *api.Client + + prefix string +} + +type vaultData struct { + Item []byte `json:"item"` +} + +type vaultEntry struct { + Data vaultData `json:"data"` +} + +var _ Keyring = (*vaultKeyring)(nil) + +func init() { + supportedBackends[VaultBackend] = opener(func(cfg Config) (Keyring, error) { + if cfg.ServiceName == "" { + cfg.ServiceName = "vault" + } + + if cfg.VaultPrefix == "" { + cfg.VaultPrefix = "secret/keyring" + } + + // Will read vault token and vault addr env vars. + vaultConfig := api.DefaultConfig() + if cfg.VaultAddress != "" { + vaultConfig.Address = cfg.VaultAddress + } + + client, err := api.NewClient(vaultConfig) + if err != nil { + return &vaultKeyring{}, err + } + + if cfg.VaultToken != "" { + client.SetToken(cfg.VaultToken) + } + + ring := &vaultKeyring{ + vault: client, + prefix: cfg.VaultPrefix, + } + + return ring, nil + }) +} + +func (v vaultKeyring) Get(key string) (Item, error) { + path, err := v.keyPath(key, "data") + if err != nil { + return Item{}, err + } + + secret, err := v.vault.Logical().Read(path) + if err != nil { + return Item{}, err + } + + if secret == nil { + return Item{}, ErrKeyNotFound + } + + item, err := v.unwrapItem(secret.Data) + if err != nil { + return Item{}, err + } + + return item, nil +} + +func (v vaultKeyring) GetMetadata(_ string) (Metadata, error) { + return Metadata{}, ErrMetadataNeedsCredentials +} + +func (v vaultKeyring) Set(item Item) error { + bz, err := v.wrapItem(item) + if err != nil { + return err + } + + path, err := v.keyPath(item.Key, "data") + if err != nil { + return err + } + + _, err = v.vault.Logical().Write(path, bz) + if err != nil { + return err + } + + return nil +} + +func (v vaultKeyring) Remove(key string) error { + path, err := v.keyPath(key, "data") + if err != nil { + return err + } + + _, err = v.vault.Logical().Delete(path) + if err != nil { + return err + } + + return nil +} + +func (v vaultKeyring) Keys() ([]string, error) { + path, err := v.keyPath("", "metadata") + if err != nil { + return []string{}, err + } + + list, err := v.vault.Logical().List(path) + if err != nil { + return []string{}, err + } + + if list == nil { + return []string{}, nil + } + + data, ok := list.Data["keys"].([]interface{}) + if !ok { + return []string{}, fmt.Errorf("error retrieving key data") + } + + var keys []string + for _, key := range data { + keys = append(keys, key.(string)) + } + return keys, nil +} + +func (v vaultKeyring) keyPath(key string, apiPrefix string) (string, error) { + var path string + if key == "" { + path = v.prefix + } else { + path = fmt.Sprintf("%s/%s", v.prefix, key) + } + + mountPath, v2, err := isKVv2(path, v.vault) + if err != nil { + return "", err + } + + if v2 { + path = addPrefixToVKVPath(path, mountPath, apiPrefix) + } + + return path, nil +} + +func (v vaultKeyring) wrapItem(item Item) (map[string]interface{}, error) { + bz, err := json.Marshal(item) + if err != nil { + return nil, fmt.Errorf("error marshal vault item data") + } + + return map[string]interface{}{"data": map[string]interface{}{"item": bz}}, nil +} + +func (v vaultKeyring) unwrapItem(vaultItem map[string]interface{}) (Item, error) { + data, ok := vaultItem["data"].(map[string]interface{}) + if !ok { + return Item{}, fmt.Errorf("error parsing vault data") + } + + bz, ok := data["item"].(string) + if !ok { + return Item{}, fmt.Errorf("error parsing vault item data") + } + + unb64, err := base64.StdEncoding.DecodeString(bz) + if err != nil { + return Item{}, fmt.Errorf("error decoding vault item data") + } + + item := Item{} + if err := json.Unmarshal(unb64, &item); err != nil { + return Item{}, fmt.Errorf("error unmarshal vault item data") + } + + return item, nil +} + +// Pulled from the vault commands. +func kvPreflightVersionRequest(client *api.Client, path string) (string, int, error) { + // We don't want to use a wrapping call here so save any custom value and + // restore after + currentWrappingLookupFunc := client.CurrentWrappingLookupFunc() + client.SetWrappingLookupFunc(nil) + defer client.SetWrappingLookupFunc(currentWrappingLookupFunc) + currentOutputCurlString := client.OutputCurlString() + client.SetOutputCurlString(false) + defer client.SetOutputCurlString(currentOutputCurlString) + + r := client.NewRequest("GET", "/v1/sys/internal/ui/mounts/"+path) + resp, err := client.RawRequest(r) + if resp != nil { + defer resp.Body.Close() + } + if err != nil { + // If we get a 404 we are using an older version of vault, default to + // version 1 + if resp != nil && resp.StatusCode == 404 { + return "", 1, nil + } + + return "", 0, err + } + + secret, err := api.ParseSecret(resp.Body) + if err != nil { + return "", 0, err + } + if secret == nil { + return "", 0, fmt.Errorf("nil response from pre-flight request") + } + var mountPath string + if mountPathRaw, ok := secret.Data["path"]; ok { + mountPath = mountPathRaw.(string) + } + options := secret.Data["options"] + if options == nil { + return mountPath, 1, nil + } + versionRaw := options.(map[string]interface{})["version"] + if versionRaw == nil { + return mountPath, 1, nil + } + version := versionRaw.(string) + switch version { + case "", "1": + return mountPath, 1, nil + case "2": + return mountPath, 2, nil + } + + return mountPath, 1, nil +} + +func isKVv2(path string, client *api.Client) (string, bool, error) { + mountPath, version, err := kvPreflightVersionRequest(client, path) + if err != nil { + return "", false, err + } + + return mountPath, version == 2, nil +} + +func addPrefixToVKVPath(p, mountPath, apiPrefix string) string { + switch { + case p == mountPath, p == strings.TrimSuffix(mountPath, "/"): + return path2.Join(mountPath, apiPrefix) + default: + p = strings.TrimPrefix(p, mountPath) + return path2.Join(mountPath, apiPrefix, p) + } +} diff --git a/vault_test.go b/vault_test.go new file mode 100644 index 0000000..cc6ea73 --- /dev/null +++ b/vault_test.go @@ -0,0 +1 @@ +package keyring