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digcaa
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DNS CAA inspection CLI and (Go) library.
Download README (.md)
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README.md
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digcaa
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# digcaa - DNS CAA inspection CLI and (Go) library A command-line tool and Go library to fetch DNS CAA (Certification Authority Authorization) records for a hostname. ## CLI Installation ```shell go install github.com/weppos/digcaa/cmd/digcaa@latest ``` or build from source: ```shell git clone https://github.com/weppos/digcaa.git cd digcaa make build ``` The binary will be created in the current directory as `digcaa`. ## CLI Usage ```shell digcaa <hostname> ``` Lookup CAA records for a domain: ```shell digcaa www.dnsimple.com # 10 records found # www.dnsimple.com : dnsimple.com. 3600 IN CAA 0 issue "amazon.com" # www.dnsimple.com : dnsimple.com. 3600 IN CAA 0 issue "letsencrypt.org" # www.dnsimple.com : dnsimple.com. 3600 IN CAA 0 issuewild "sectigo.com" # www.dnsimple.com : dnsimple.com. 3600 IN CAA 0 iodef "mailto:ops@dnsimple.com" # [...] ``` ### Configuration Options Configure DNS query timeout and resolver: ```shell # Use a 10 second timeout digcaa --timeout 10s example.com # Use a 10 millisecond timeout digcaa --timeout 10ms example.com # Use a 1 minute timeout digcaa --timeout 1m example.com # Use Cloudflare DNS resolver digcaa --resolver 1.1.1.1:53 example.com # Combine timeout and resolver digcaa --timeout 10s --resolver 1.1.1.1:53 example.com ``` ## Library Usage Install the library: ```shell go get github.com/weppos/digcaa ``` Use it in your Go code: ```go package main import ( "fmt" "log" "github.com/weppos/digcaa" ) func main() { // Use default resolver and timeout records, err := digcaa.Lookup("www.comodo.com") if err != nil { log.Fatal(err) } fmt.Printf("%d records found\n", len(records)) for _, record := range records { fmt.Println(record) } } ``` ### Custom Configuration Use custom timeout and resolver: ```go package main import ( "fmt" "log" "time" "github.com/weppos/digcaa" ) func main() { // Create a custom configuration config := &digcaa.Config{ Timeout: 10 * time.Second, Resolver: "1.1.1.1:53", // Cloudflare DNS } resolver := digcaa.NewResolverWithConfig(config) records, err := resolver.Lookup("www.example.com") if err != nil { log.Fatal(err) } fmt.Printf("%d records found\n", len(records)) for _, record := range records { fmt.Println(record) } } ``` ## License [MIT License](LICENSE.txt).
