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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package assets | ||
|
|
||
| /* | ||
| Sliver Implant Framework | ||
| Copyright (C) 2019 Bishop Fox | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU 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 General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
| ) | ||
|
|
||
| const ( | ||
| armoryConfigFileName = "armories.json" | ||
| ) | ||
|
|
||
| var ( | ||
| DefaultArmoryPublicKey string | ||
| DefaultArmoryRepoURL string | ||
|
|
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| defaultArmoryConfig = &ArmoryConfig{ | ||
| PublicKey: DefaultArmoryPublicKey, | ||
| RepoURL: DefaultArmoryRepoURL, | ||
| } | ||
| ) | ||
|
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||
| type ArmoryConfig struct { | ||
| PublicKey string `json:"public_key"` | ||
| RepoURL string `json:"repo_url"` | ||
| } | ||
|
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| // GetArmoriesConfig - The parsed armory config file | ||
| func GetArmoriesConfig() []*ArmoryConfig { | ||
| armoryConfigPath := filepath.Join(GetRootAppDir(), armoryConfigFileName) | ||
| if _, err := os.Stat(armoryConfigPath); os.IsNotExist(err) { | ||
| return []*ArmoryConfig{defaultArmoryConfig} | ||
| } | ||
| data, err := ioutil.ReadFile(armoryConfigPath) | ||
| if err != nil { | ||
| return []*ArmoryConfig{defaultArmoryConfig} | ||
| } | ||
| var armoryConfigs []*ArmoryConfig | ||
| err = json.Unmarshal(data, &armoryConfigs) | ||
| if err != nil { | ||
| return []*ArmoryConfig{defaultArmoryConfig} | ||
| } | ||
| return append(armoryConfigs, defaultArmoryConfig) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| package armory | ||
|
|
||
| /* | ||
| Sliver Implant Framework | ||
| Copyright (C) 2021 Bishop Fox | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU 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 General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| import ( | ||
| "errors" | ||
| "net/url" | ||
| "sync" | ||
| "time" | ||
|
|
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| "github.com/bishopfox/sliver/client/assets" | ||
| "github.com/bishopfox/sliver/client/console" | ||
| "github.com/desertbit/grumble" | ||
| ) | ||
|
|
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| type ArmoryIndex struct { | ||
| Aliases []*ArmoryPackage `json:"aliases"` | ||
| Extensions []*ArmoryPackage `json:"extensions"` | ||
| } | ||
|
|
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| type ArmoryPackage struct { | ||
| Name string `json:"name"` | ||
| CommandName string `json:"command_name"` | ||
| RepoURL string `json:"repo_url"` | ||
| PublicKey string `json:"public_key"` | ||
| } | ||
|
|
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| type ArmoryHTTPConfig struct { | ||
| SkipCache bool | ||
| ProxyURL *url.URL | ||
| Timeout time.Duration | ||
| DisableTLSValidation bool | ||
| } | ||
|
|
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| type armoryIndexCacheEntry struct { | ||
| Fetched time.Time | ||
| Index ArmoryIndex | ||
| LastErr error | ||
| } | ||
|
|
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| type armoryPkgCacheEntry struct { | ||
| Fetched time.Time | ||
| Pkg ArmoryPackage | ||
| LastErr error | ||
| } | ||
|
|
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| var ( | ||
| // public key -> armoryCacheEntry | ||
| indexCache = sync.Map{} | ||
| // public key -> armoryPkgCacheEntry | ||
| pkgCache = sync.Map{} | ||
|
|
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| cacheTime = time.Hour // This will kill a download if exceeded so needs to be large | ||
| defaultTimeout = 15 * time.Minute | ||
| ) | ||
|
|
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| // ArmoryCmd - The main armory command | ||
| func ArmoryCmd(ctx *grumble.Context, con *console.SliverConsoleClient) { | ||
| armoriesConfig := assets.GetArmoriesConfig() | ||
| con.PrintInfof("Fetching %d armory index(es) ...", len(armoriesConfig)) | ||
| clientConfig := parseArmoryHTTPConfig() | ||
| indexes := fetchIndexes(armoriesConfig, clientConfig) | ||
| if 0 < len(indexes) { | ||
| con.PrintInfof("Fetching package information ...", len(armoriesConfig)) | ||
| fetchPackageSignatures(indexes, clientConfig) | ||
| } | ||
|
|
||
| } | ||
|
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| func parseArmoryHTTPConfig() ArmoryHTTPConfig { | ||
| return ArmoryHTTPConfig{ | ||
| SkipCache: false, | ||
| ProxyURL: nil, | ||
| Timeout: defaultTimeout, | ||
| DisableTLSValidation: false, | ||
| } | ||
| } | ||
|
|
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| func fetchIndexes(armoryConfigs []*assets.ArmoryConfig, clientConfig ArmoryHTTPConfig) []ArmoryIndex { | ||
| wg := &sync.WaitGroup{} | ||
| for _, armoryConfig := range armoryConfigs { | ||
| wg.Add(1) | ||
| go fetchIndex(armoryConfig, clientConfig, wg) | ||
| } | ||
| wg.Wait() | ||
| indexes := []ArmoryIndex{} | ||
| indexCache.Range(func(key, value interface{}) bool { | ||
| cacheEntry := value.(armoryIndexCacheEntry) | ||
| if cacheEntry.LastErr == nil { | ||
| indexes = append(indexes, cacheEntry.Index) | ||
| } | ||
| return true | ||
| }) | ||
| return indexes | ||
| } | ||
|
|
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| func fetchIndex(armoryConfig *assets.ArmoryConfig, clientConfig ArmoryHTTPConfig, wg *sync.WaitGroup) { | ||
| defer wg.Done() | ||
| cacheEntry, ok := indexCache.Load(armoryConfig.PublicKey) | ||
| if ok { | ||
| cached := cacheEntry.(*armoryIndexCacheEntry) | ||
| if time.Since(cached.Fetched) < cacheTime && cached.LastErr == nil && !clientConfig.SkipCache { | ||
| return | ||
| } | ||
| } | ||
|
|
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| armoryResult := &armoryIndexCacheEntry{} | ||
| defer func() { | ||
| armoryResult.Fetched = time.Now() | ||
| indexCache.Store(armoryConfig.PublicKey, armoryResult) | ||
| }() | ||
|
|
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| repoURL, err := url.Parse(armoryConfig.RepoURL) | ||
| if err != nil { | ||
| armoryResult.LastErr = err | ||
| return | ||
| } | ||
| if repoURL.Scheme != "https" && repoURL.Scheme != "http" { | ||
| armoryResult.LastErr = errors.New("invalid URL scheme") | ||
| return | ||
| } | ||
|
|
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| var index *ArmoryIndex | ||
| if indexParser, ok := indexParsers[repoURL.Hostname()]; ok { | ||
| index, err = indexParser(armoryConfig, clientConfig) | ||
| } else { | ||
| index, err = DefaultArmoryIndexParser(armoryConfig, clientConfig) | ||
| } | ||
| armoryResult.Index = *index | ||
| armoryResult.LastErr = err | ||
| } | ||
|
|
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| func fetchPackageSignatures(indexes []ArmoryIndex, clientConfig ArmoryHTTPConfig) { | ||
| wg := &sync.WaitGroup{} | ||
| for _, index := range indexes { | ||
| for _, armoryPkg := range index.Extensions { | ||
| wg.Add(1) | ||
| go fetchPackageSignature(wg, armoryPkg.RepoURL, armoryPkg.PublicKey, clientConfig) | ||
| } | ||
| for _, armoryPkg := range index.Aliases { | ||
| wg.Add(1) | ||
| go fetchPackageSignature(wg, armoryPkg.RepoURL, armoryPkg.PublicKey, clientConfig) | ||
| } | ||
| } | ||
| wg.Wait() | ||
| } | ||
|
|
||
| func fetchPackageSignature(wg *sync.WaitGroup, rawRepoURL string, rawPublicKey string, clientConfig ArmoryHTTPConfig) { | ||
| defer wg.Done() | ||
| cacheEntry, ok := pkgCache.Load(rawPublicKey) | ||
| if ok { | ||
| cached := cacheEntry.(*armoryIndexCacheEntry) | ||
| if time.Since(cached.Fetched) < cacheTime && cached.LastErr == nil && !clientConfig.SkipCache { | ||
| return | ||
| } | ||
| } | ||
|
|
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| var pkgCacheEntry *armoryPkgCacheEntry | ||
| defer func() { | ||
| pkgCacheEntry.Fetched = time.Now() | ||
| indexCache.Store(rawPublicKey, pkgCacheEntry) | ||
| }() | ||
|
|
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| repoURL, err := url.Parse(rawRepoURL) | ||
| if err != nil { | ||
| pkgCacheEntry.LastErr = err | ||
| return | ||
| } | ||
| if repoURL.Scheme != "https" && repoURL.Scheme != "http" { | ||
| pkgCacheEntry.LastErr = errors.New("invalid URL scheme") | ||
| return | ||
| } | ||
|
|
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| var pkg *ArmoryPackage | ||
| if pkgParser, ok := pkgParsers[repoURL.Hostname()]; ok { | ||
| pkg, err = pkgParser(rawRepoURL, rawPublicKey, true, clientConfig) | ||
| } else { | ||
| pkg, err = DefaultArmoryPkgParser(rawRepoURL, rawPublicKey, true, clientConfig) | ||
| } | ||
| pkgCacheEntry.Pkg = *pkg | ||
| pkgCacheEntry.LastErr = err | ||
| } |
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