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README.md
gdns
: Tools to work with the Google DNS over HTTPS API
Traditional DNS queries and responses are sent over UDP or TCP without encryption. This is vulnerable to eavesdropping and spoofing (including DNS-based Internet filtering). Responses from recursive resolvers to clients are the most vulnerable to undesired or malicious changes, while communications between recursive resolvers and authoritative nameservers often incorporate additional protection.
To address this problem, Google Public DNS offers DNS resolution over an encrypted HTTPS connection. DNS-over-HTTPS greatly enhances privacy and security between a client and a recursive resolver, and complements DNSSEC to provide end-to-end authenticated DNS lookups.
More info at https://developers.google.com/speed/public-dns/docs/dns-over-https.
The following functions are implemented:
bulk_query
: Vectorized query, returning only answers in a data framehas_spf
: Test for whether a DNS TXT record is an SPF recordis_hard_fail
: SPF “all” type testis_soft_fail
: SPF “all” type testpasses_all
: SPF “all” type testquery
: Perform DNS over HTTPS queries using Googlespf_exists
: SPF field extraction functionsspf_includes
: SPF field extraction functionsspf_ipv4s
: SPF field extraction functionsspf_ipv6s
: SPF field extraction functionsspf_ptrs
: SPF field extraction functionssplit_spf
: Split out all SPF records in a domain’s TXT record
Installation
devtools::install_github("hrbrmstr/gdns")
Usage
library(gdns)
# current verison
packageVersion("gdns")
#> [1] '0.3.1'
str(query("rud.is"))
#> List of 10
#> $ Status : int 0
#> $ TC : logi FALSE
#> $ RD : logi TRUE
#> $ RA : logi TRUE
#> $ AD : logi FALSE
#> $ CD : logi FALSE
#> $ Question :'data.frame': 1 obs. of 2 variables:
#> ..$ name: chr "rud.is."
#> ..$ type: int 1
#> $ Answer :'data.frame': 1 obs. of 4 variables:
#> ..$ name: chr "rud.is."
#> ..$ type: int 1
#> ..$ TTL : int 1152
#> ..$ data: chr "104.236.112.222"
#> $ Additional : list()
#> $ edns_client_subnet: chr "0.0.0.0/0"
str(query("example.com", "255")) # "ANY" query
#> List of 10
#> $ Status : int 0
#> $ TC : logi FALSE
#> $ RD : logi TRUE
#> $ RA : logi TRUE
#> $ AD : logi TRUE
#> $ CD : logi FALSE
#> $ Question :'data.frame': 1 obs. of 2 variables:
#> ..$ name: chr "example.com."
#> ..$ type: int 255
#> $ Answer :'data.frame': 20 obs. of 4 variables:
#> ..$ name: chr [1:20] "example.com." "example.com." "example.com." "example.com." ...
#> ..$ type: int [1:20] 6 46 47 46 2 2 46 28 46 1 ...
#> ..$ TTL : int [1:20] 3562 3562 3562 21562 21562 21562 21562 21562 21562 21562 ...
#> ..$ data: chr [1:20] "sns.dns.icann.org. noc.dns.icann.org. 2018080125 7200 3600 1209600 3600" "nsec 8 2 3600 1538855995 1537006806 63855 example.com. pFyGCdsJ2uw2FcRlszW1VuM6FRV1rHbBfeBmp/Jaecdth8njienGYt2k"| __truncated__ "www.example.com. A NS SOA TXT AAAA RRSIG NSEC DNSKEY" "ns 8 2 86400 1538826642 1537014006 63855 example.com. U7KJg6I3XylL5aT10B3tHw9MIV8QoHBlmzO3CwghRh4I00ZzF2IgjakMp"| __truncated__ ...
#> $ Additional : list()
#> $ edns_client_subnet: chr "0.0.0.0/0"
str(query("microsoft.com", "MX"))
#> List of 11
#> $ Status : int 0
#> $ TC : logi FALSE
#> $ RD : logi TRUE
#> $ RA : logi TRUE
#> $ AD : logi FALSE
#> $ CD : logi FALSE
#> $ Question :'data.frame': 1 obs. of 2 variables:
#> ..$ name: chr "microsoft.com."
#> ..$ type: int 15
#> $ Answer :'data.frame': 1 obs. of 4 variables:
#> ..$ name: chr "microsoft.com."
#> ..$ type: int 15
#> ..$ TTL : int 3599
#> ..$ data: chr "10 microsoft-com.mail.protection.outlook.com."
#> $ Additional : list()
#> $ edns_client_subnet: chr "0.0.0.0/0"
#> $ Comment : chr "Response from 208.76.45.53."
str(query("google-public-dns-a.google.com", "TXT"))
#> List of 10
#> $ Status : int 0
#> $ TC : logi FALSE
#> $ RD : logi TRUE
#> $ RA : logi TRUE
#> $ AD : logi FALSE
#> $ CD : logi FALSE
#> $ Question :'data.frame': 1 obs. of 2 variables:
#> ..$ name: chr "google-public-dns-a.google.com."
#> ..$ type: int 16
#> $ Answer :'data.frame': 1 obs. of 4 variables:
#> ..$ name: chr "google-public-dns-a.google.com."
#> ..$ type: int 16
#> ..$ TTL : int 21432
#> ..$ data: chr "\"http://xkcd.com/1361/\""
#> $ Additional : list()
#> $ edns_client_subnet: chr "0.0.0.0/0"
str(query("apple.com"))
#> List of 10
#> $ Status : int 0
#> $ TC : logi FALSE
#> $ RD : logi TRUE
#> $ RA : logi TRUE
#> $ AD : logi FALSE
#> $ CD : logi FALSE
#> $ Question :'data.frame': 1 obs. of 2 variables:
#> ..$ name: chr "apple.com."
#> ..$ type: int 1
#> $ Answer :'data.frame': 3 obs. of 4 variables:
#> ..$ name: chr [1:3] "apple.com." "apple.com." "apple.com."
#> ..$ type: int [1:3] 1 1 1
#> ..$ TTL : int [1:3] 2635 2635 2635
#> ..$ data: chr [1:3] "17.172.224.47" "17.178.96.59" "17.142.160.59"
#> $ Additional : list()
#> $ edns_client_subnet: chr "0.0.0.0/0"
str(query("17.142.160.59", "PTR"))
#> List of 10
#> $ Status : int 0
#> $ TC : logi FALSE
#> $ RD : logi TRUE
#> $ RA : logi TRUE
#> $ AD : logi FALSE
#> $ CD : logi FALSE
#> $ Question :'data.frame': 1 obs. of 2 variables:
#> ..$ name: chr "59.160.142.17.in-addr.arpa."
#> ..$ type: int 12
#> $ Answer :'data.frame': 5 obs. of 4 variables:
#> ..$ name: chr [1:5] "59.160.142.17.in-addr.arpa." "59.160.142.17.in-addr.arpa." "59.160.142.17.in-addr.arpa." "59.160.142.17.in-addr.arpa." ...
#> ..$ type: int [1:5] 12 12 12 12 12
#> ..$ TTL : int [1:5] 3588 3588 3588 3588 3588
#> ..$ data: chr [1:5] "apple.by." "apple.com." "pv-apple-com.apple.com." "ipad.host." ...
#> $ Additional : list()
#> $ edns_client_subnet: chr "0.0.0.0/0"
hosts <- c("rud.is", "dds.ec", "r-project.org", "rstudio.com", "apple.com")
gdns::bulk_query(hosts)
#> name type TTL data entity
#> 1 rud.is. 1 1151 104.236.112.222 rud.is
#> 2 dds.ec. 1 599 185.53.178.9 dds.ec
#> 3 r-project.org. 1 7031 137.208.57.37 r-project.org
#> 4 rstudio.com. 1 3431 104.196.200.5 rstudio.com
#> 5 apple.com. 1 2718 17.178.96.59 apple.com
#> 6 apple.com. 1 2718 17.142.160.59 apple.com
#> 7 apple.com. 1 2718 17.172.224.47 apple.com
Test Results
library(gdns)
library(testthat)
date()
#> [1] "Sun Sep 16 13:23:55 2018"
test_dir("tests/")
#> ✔ | OK F W S | Context
#> ══ testthat results ═════════════════════════════════════════════════════════════════════════════════════════
#> OK: 2 SKIPPED: 0 FAILED: 0
#>
#> ══ Results ═══════════════════════════════════════════════════════════════════════════════════════════════════
#> Duration: 0.4 s
#>
#> OK: 0
#> Failed: 0
#> Warnings: 0
#> Skipped: 0
Code of Conduct
Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.