feat(cti): add Cyber Threat Intelligence info (#1442)

* feat(cti): add Cyber Threat Intelligence info

* chore: replace io/ioutil as it is deprecated

* chore: remove --format-csv in stdout writer

* chore(deps): go get go-cti@v0.0.1

* feat(cti): update cti dict(support MITRE ATT&CK v11.1)

* chore(deps): go get go-cti@master

config/config.go

@@ -42,6 +42,7 @@ type Config struct {
 	Exploit    ExploitConf    `json:"exploit,omitempty"`
 	Metasploit MetasploitConf `json:"metasploit,omitempty"`
 	KEVuln     KEVulnConf     `json:"kevuln,omitempty"`
+	Cti        CtiConf        `json:"cti,omitempty"`
 
 	Slack      SlackConf      `json:"-"`
 	EMail      SMTPConf       `json:"-"`
@@ -178,6 +179,7 @@ func (c *Config) ValidateOnReport() bool {
 		&Conf.Exploit,
 		&Conf.Metasploit,
 		&Conf.KEVuln,
+		&Conf.Cti,
 	} {
 		if err := cnf.Validate(); err != nil {
 			errs = append(errs, xerrors.Errorf("Failed to validate %s: %+v", cnf.GetName(), err))

config/tomlloader.go

@@ -32,6 +32,7 @@ func (c TOMLLoader) Load(pathToToml string) error {
 		&Conf.Exploit,
 		&Conf.Metasploit,
 		&Conf.KEVuln,
+		&Conf.Cti,
 	} {
 		cnf.Init()
 	}

config/vulnDictConf.go

@@ -301,3 +301,30 @@ func (cnf *KEVulnConf) Init() {
 	cnf.setDefault("go-kev.sqlite3")
 	cnf.DebugSQL = Conf.DebugSQL
 }
+
+// CtiConf is go-cti config
+type CtiConf struct {
+	VulnDict
+}
+
+const ctiDBType = "CTI_TYPE"
+const ctiDBURL = "CTI_URL"
+const ctiDBPATH = "CTI_SQLITE3_PATH"
+
+// Init set options with the following priority.
+// 1. Environment variable
+// 2. config.toml
+func (cnf *CtiConf) Init() {
+	cnf.Name = "cti"
+	if os.Getenv(ctiDBType) != "" {
+		cnf.Type = os.Getenv(ctiDBType)
+	}
+	if os.Getenv(ctiDBURL) != "" {
+		cnf.URL = os.Getenv(ctiDBURL)
+	}
+	if os.Getenv(ctiDBPATH) != "" {
+		cnf.SQLite3Path = os.Getenv(ctiDBPATH)
+	}
+	cnf.setDefault("go-cti.sqlite3")
+	cnf.DebugSQL = Conf.DebugSQL
+}