Stefan Bühler
3 years ago
commit
577a137c62
4 changed files with 290 additions and 0 deletions
-
2.gitignore
-
157Cargo.lock
-
9Cargo.toml
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122src/main.rs
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/target |
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**/*.rs.bk |
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[[package]] |
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name = "ansi_term" |
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version = "0.11.0" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "atty" |
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version = "0.2.11" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)", |
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"termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)", |
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"winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "bitflags" |
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version = "1.0.4" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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[[package]] |
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name = "byteorder" |
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version = "0.5.3" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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|
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[[package]] |
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name = "clap" |
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version = "2.32.0" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)", |
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"atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)", |
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"bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)", |
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"strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)", |
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"textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)", |
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"unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)", |
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"vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "libc" |
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version = "0.2.43" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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|
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[[package]] |
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name = "libresolv-sys" |
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version = "0.1.0" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "lookup" |
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version = "0.1.0" |
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dependencies = [ |
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"clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)", |
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"resolv 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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[[package]] |
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name = "redox_syscall" |
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version = "0.1.40" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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[[package]] |
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name = "redox_termios" |
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version = "0.1.1" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "resolv" |
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version = "0.1.3" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)", |
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"libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)", |
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"libresolv-sys 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "strsim" |
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version = "0.7.0" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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|
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[[package]] |
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name = "termion" |
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version = "1.5.1" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)", |
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"redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)", |
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"redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "textwrap" |
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version = "0.10.0" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "unicode-width" |
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version = "0.1.5" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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[[package]] |
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name = "vec_map" |
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version = "0.8.1" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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[[package]] |
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name = "winapi" |
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version = "0.3.6" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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dependencies = [ |
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"winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)", |
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"winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)", |
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] |
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|
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[[package]] |
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name = "winapi-i686-pc-windows-gnu" |
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version = "0.4.0" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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[[package]] |
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name = "winapi-x86_64-pc-windows-gnu" |
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version = "0.4.0" |
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source = "registry+https://github.com/rust-lang/crates.io-index" |
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|
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[metadata] |
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"checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b" |
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"checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652" |
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"checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12" |
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"checksum byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0fc10e8cc6b2580fda3f36eb6dc5316657f812a3df879a44a66fc9f0fdbc4855" |
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"checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e" |
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"checksum libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)" = "76e3a3ef172f1a0b9a9ff0dd1491ae5e6c948b94479a3021819ba7d860c8645d" |
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"checksum resolv 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "da9b4625242386471752e8965860cae1c780ba836aaf7b47a8a9e4946752dd9b" |
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"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a" |
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"checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0" |
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"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6" |
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"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f" |
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@ -0,0 +1,9 @@ |
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[package] |
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name = "lookup" |
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version = "0.1.0" |
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authors = ["Stefan Bühler <stbuehler@web.de>"] |
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description = "Lookup IPv4 and IPv6 addresses for a hostname" |
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|
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[dependencies] |
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resolv = "0.1.3" |
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clap = "2.32.0" |
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@ -0,0 +1,122 @@ |
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#[macro_use]
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extern crate clap;
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extern crate resolv;
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use resolv::{
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Resolver,
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Class,
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Section,
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error::{
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Error,
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ResolutionError,
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},
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record::{
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A,
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AAAA,
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},
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};
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use std::process::exit;
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use std::ffi::OsStr;
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use std::os::unix::ffi::OsStrExt;
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use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
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use std::fmt;
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/// Workaround https://github.com/mikedilger/resolv-rs/issues/1
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///
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/// When it gets fixed, this will simply call the inner `.next()` a few
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/// times too often, which should hurt much.
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struct FixedIterator<'a, T: resolv::record::RecordData>(resolv::RecordItems<'a, T>, usize);
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impl<'a, T: resolv::record::RecordData> Iterator for FixedIterator<'a, T> {
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type Item = resolv::Record<T>;
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fn next(&mut self) -> Option<Self::Item> {
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while self.1 > 0 {
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self.1 -= 1;
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if let Some(r) = self.0.next() {
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return Some(r);
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}
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}
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return None;
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}
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}
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impl<'a, T: resolv::record::RecordData> FixedIterator<'a, T> {
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pub fn answers(response: &'a mut resolv::Response) -> Self {
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let count = response.get_section_count(Section::Answer);
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FixedIterator(response.answers::<T>(), count)
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}
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}
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pub trait AddressRecord: resolv::record::RecordData {
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type Address: Into<IpAddr> + fmt::Display + fmt::Debug;
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fn address(&self) -> Self::Address;
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}
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impl AddressRecord for A {
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type Address = Ipv4Addr;
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fn address(&self) -> Ipv4Addr {
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self.address
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}
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}
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impl AddressRecord for AAAA {
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type Address = Ipv6Addr;
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fn address(&self) -> Ipv6Addr {
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self.address
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}
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}
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fn run<R: AddressRecord>(resolver: &mut resolv::Resolver, name: &OsStr) {
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match resolver.query(name.as_bytes(), Class::IN, R::get_record_type()) {
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Ok(mut response) => {
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for answer in FixedIterator::<R>::answers(&mut response) {
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println!("{}", answer.data.address());
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}
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},
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Err(Error::Resolver(ResolutionError::HostNotFound)) => {
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eprintln!("Host not found: {:?}", name);
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exit(0);
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},
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Err(Error::Resolver(ResolutionError::NoData)) => {
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// empty answer is perfectly fine
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},
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Err(e) => {
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eprintln!("Failed looking up {:?}: {}", name, e);
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exit(1);
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},
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}
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}
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fn main() {
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let app = clap_app!(("lookup") =>
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(version: crate_version!())
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(author: crate_authors!("\n"))
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(about: crate_description!())
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(@arg IPv4: short("4") conflicts_with("IPv6") "Query only IPv4 records (A)")
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(@arg IPv6: short("6") "Query only IPv6 records (AAAA)")
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(@arg NAME: +required "Name to lookup")
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);
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let matches = app.get_matches();
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let ipv4_only = matches.is_present("IPv4");
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let ipv6_only = matches.is_present("IPv6");
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let name = matches.value_of_os("NAME").unwrap();
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let mut resolver = Resolver::new().unwrap_or_else(|| {
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eprintln!("Couldn't initialize resolver");
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exit(1);
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});
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if !ipv6_only {
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run::<A>(&mut resolver, name);
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}
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if !ipv4_only {
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run::<AAAA>(&mut resolver, name);
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}
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}
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