finialize initial dns + caching
This commit is contained in:
Tyler Murphy
parent
6c62c26d0d
commit
0f40ab89e3
23 changed files with 1863 additions and 883 deletions
789
Cargo.lock
generated
789
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@ -2,6 +2,35 @@
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# It is not intended for manual editing.
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@ -25,18 +54,228 @@ version = "1.3.2"
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]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "mach"
|
||||||
|
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|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
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|
||||||
|
dependencies = [
|
||||||
|
"libc",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "memchr"
|
name = "memchr"
|
||||||
version = "2.5.0"
|
version = "2.5.0"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
|
checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "memoffset"
|
||||||
|
version = "0.8.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d61c719bcfbcf5d62b3a09efa6088de8c54bc0bfcd3ea7ae39fcc186108b8de1"
|
||||||
|
dependencies = [
|
||||||
|
"autocfg",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "mio"
|
name = "mio"
|
||||||
version = "0.8.6"
|
version = "0.8.6"
|
||||||
|
|
@ -85,10 +388,46 @@ checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
|
||||||
dependencies = [
|
dependencies = [
|
||||||
"libc",
|
"libc",
|
||||||
"log",
|
"log",
|
||||||
"wasi",
|
"wasi 0.11.0+wasi-snapshot-preview1",
|
||||||
"windows-sys 0.45.0",
|
"windows-sys 0.45.0",
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "moka"
|
||||||
|
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|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "2b6446f16d504e3d575df79cabb11bfbe9f24b17e9562d964a815db7b28ae3ec"
|
||||||
|
dependencies = [
|
||||||
|
"async-io",
|
||||||
|
"async-lock",
|
||||||
|
"crossbeam-channel",
|
||||||
|
"crossbeam-epoch",
|
||||||
|
"crossbeam-utils",
|
||||||
|
"futures-util",
|
||||||
|
"num_cpus",
|
||||||
|
"once_cell",
|
||||||
|
"parking_lot",
|
||||||
|
"quanta",
|
||||||
|
"rustc_version",
|
||||||
|
"scheduled-thread-pool",
|
||||||
|
"skeptic",
|
||||||
|
"smallvec",
|
||||||
|
"tagptr",
|
||||||
|
"thiserror",
|
||||||
|
"triomphe",
|
||||||
|
"uuid",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "nu-ansi-term"
|
||||||
|
version = "0.46.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
|
||||||
|
dependencies = [
|
||||||
|
"overload",
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "num_cpus"
|
name = "num_cpus"
|
||||||
version = "1.15.0"
|
version = "1.15.0"
|
||||||
|
|
@ -100,8 +439,22 @@ dependencies = [
|
||||||
]
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "packet"
|
name = "once_cell"
|
||||||
version = "0.1.0"
|
version = "1.17.1"
|
||||||
|
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|
||||||
|
checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "overload"
|
||||||
|
version = "0.1.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "parking"
|
||||||
|
version = "2.0.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "427c3892f9e783d91cc128285287e70a59e206ca452770ece88a76f7a3eddd72"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "parking_lot"
|
name = "parking_lot"
|
||||||
|
|
@ -132,6 +485,26 @@ version = "0.2.9"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
|
checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "pin-utils"
|
||||||
|
version = "0.1.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "polling"
|
||||||
|
version = "2.5.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "22122d5ec4f9fe1b3916419b76be1e80bcb93f618d071d2edf841b137b2a2bd6"
|
||||||
|
dependencies = [
|
||||||
|
"autocfg",
|
||||||
|
"cfg-if",
|
||||||
|
"libc",
|
||||||
|
"log",
|
||||||
|
"wepoll-ffi",
|
||||||
|
"windows-sys 0.42.0",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "proc-macro2"
|
name = "proc-macro2"
|
||||||
version = "1.0.51"
|
version = "1.0.51"
|
||||||
|
|
@ -141,6 +514,33 @@ dependencies = [
|
||||||
"unicode-ident",
|
"unicode-ident",
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "pulldown-cmark"
|
||||||
|
version = "0.9.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "2d9cc634bc78768157b5cbfe988ffcd1dcba95cd2b2f03a88316c08c6d00ed63"
|
||||||
|
dependencies = [
|
||||||
|
"bitflags",
|
||||||
|
"memchr",
|
||||||
|
"unicase",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "quanta"
|
||||||
|
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|
||||||
|
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|
||||||
|
checksum = "b7e31331286705f455e56cca62e0e717158474ff02b7936c1fa596d983f4ae27"
|
||||||
|
dependencies = [
|
||||||
|
"crossbeam-utils",
|
||||||
|
"libc",
|
||||||
|
"mach",
|
||||||
|
"once_cell",
|
||||||
|
"raw-cpuid",
|
||||||
|
"wasi 0.10.2+wasi-snapshot-preview1",
|
||||||
|
"web-sys",
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "quote"
|
name = "quote"
|
||||||
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|
version = "1.0.23"
|
||||||
|
|
@ -150,6 +550,15 @@ dependencies = [
|
||||||
"proc-macro2",
|
"proc-macro2",
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "raw-cpuid"
|
||||||
|
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|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "6c297679cb867470fa8c9f67dbba74a78d78e3e98d7cf2b08d6d71540f797332"
|
||||||
|
dependencies = [
|
||||||
|
"bitflags",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "redox_syscall"
|
name = "redox_syscall"
|
||||||
version = "0.2.16"
|
version = "0.2.16"
|
||||||
|
|
@ -160,12 +569,50 @@ dependencies = [
|
||||||
]
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "resolver"
|
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|
||||||
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|
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|
||||||
|
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|
||||||
|
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|
||||||
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|
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|
||||||
"async-recursion",
|
"semver",
|
||||||
"packet",
|
]
|
||||||
"tokio",
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
"bitflags",
|
||||||
|
"errno",
|
||||||
|
"io-lifetimes",
|
||||||
|
"libc",
|
||||||
|
"linux-raw-sys",
|
||||||
|
"windows-sys 0.45.0",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
"winapi-util",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "scheduled-thread-pool"
|
||||||
|
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|
||||||
|
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|
||||||
|
checksum = "977a7519bff143a44f842fd07e80ad1329295bd71686457f18e496736f4bf9bf"
|
||||||
|
dependencies = [
|
||||||
|
"parking_lot",
|
||||||
]
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
|
|
@ -174,6 +621,55 @@ version = "1.1.0"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
|
checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "semver"
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
dependencies = [
|
||||||
|
"serde",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "serde"
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
dependencies = [
|
||||||
|
"serde_derive",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
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|
||||||
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|
||||||
|
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|
||||||
|
"itoa",
|
||||||
|
"ryu",
|
||||||
|
"serde",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
"lazy_static",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "signal-hook-registry"
|
name = "signal-hook-registry"
|
||||||
version = "1.4.1"
|
version = "1.4.1"
|
||||||
|
|
@ -183,6 +679,30 @@ dependencies = [
|
||||||
"libc",
|
"libc",
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
"bytecount",
|
||||||
|
"cargo_metadata",
|
||||||
|
"error-chain",
|
||||||
|
"glob",
|
||||||
|
"pulldown-cmark",
|
||||||
|
"tempfile",
|
||||||
|
"walkdir",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
"autocfg",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "smallvec"
|
name = "smallvec"
|
||||||
version = "1.10.0"
|
version = "1.10.0"
|
||||||
|
|
@ -210,6 +730,55 @@ dependencies = [
|
||||||
"unicode-ident",
|
"unicode-ident",
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tagptr"
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tempfile"
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
dependencies = [
|
||||||
|
"cfg-if",
|
||||||
|
"fastrand",
|
||||||
|
"redox_syscall",
|
||||||
|
"rustix",
|
||||||
|
"windows-sys 0.42.0",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thiserror"
|
||||||
|
version = "1.0.38"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
|
||||||
|
dependencies = [
|
||||||
|
"thiserror-impl",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thiserror-impl"
|
||||||
|
version = "1.0.38"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thread_local"
|
||||||
|
version = "1.1.7"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "3fdd6f064ccff2d6567adcb3873ca630700f00b5ad3f060c25b5dcfd9a4ce152"
|
||||||
|
dependencies = [
|
||||||
|
"cfg-if",
|
||||||
|
"once_cell",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "tokio"
|
name = "tokio"
|
||||||
version = "1.25.0"
|
version = "1.25.0"
|
||||||
|
|
@ -241,18 +810,208 @@ dependencies = [
|
||||||
"syn",
|
"syn",
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing"
|
||||||
|
version = "0.1.37"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8ce8c33a8d48bd45d624a6e523445fd21ec13d3653cd51f681abf67418f54eb8"
|
||||||
|
dependencies = [
|
||||||
|
"cfg-if",
|
||||||
|
"pin-project-lite",
|
||||||
|
"tracing-attributes",
|
||||||
|
"tracing-core",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-attributes"
|
||||||
|
version = "0.1.23"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "4017f8f45139870ca7e672686113917c71c7a6e02d4924eda67186083c03081a"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-core"
|
||||||
|
version = "0.1.30"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "24eb03ba0eab1fd845050058ce5e616558e8f8d8fca633e6b163fe25c797213a"
|
||||||
|
dependencies = [
|
||||||
|
"once_cell",
|
||||||
|
"valuable",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-log"
|
||||||
|
version = "0.1.3"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "78ddad33d2d10b1ed7eb9d1f518a5674713876e97e5bb9b7345a7984fbb4f922"
|
||||||
|
dependencies = [
|
||||||
|
"lazy_static",
|
||||||
|
"log",
|
||||||
|
"tracing-core",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-subscriber"
|
||||||
|
version = "0.3.16"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "a6176eae26dd70d0c919749377897b54a9276bd7061339665dd68777926b5a70"
|
||||||
|
dependencies = [
|
||||||
|
"nu-ansi-term",
|
||||||
|
"sharded-slab",
|
||||||
|
"smallvec",
|
||||||
|
"thread_local",
|
||||||
|
"tracing-core",
|
||||||
|
"tracing-log",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "triomphe"
|
||||||
|
version = "0.1.8"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "f1ee9bd9239c339d714d657fac840c6d2a4f9c45f4f9ec7b0975113458be78db"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicase"
|
||||||
|
version = "2.6.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
|
||||||
|
dependencies = [
|
||||||
|
"version_check",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "unicode-ident"
|
name = "unicode-ident"
|
||||||
version = "1.0.6"
|
version = "1.0.6"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "84a22b9f218b40614adcb3f4ff08b703773ad44fa9423e4e0d346d5db86e4ebc"
|
checksum = "84a22b9f218b40614adcb3f4ff08b703773ad44fa9423e4e0d346d5db86e4ebc"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "uuid"
|
||||||
|
version = "1.3.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "1674845326ee10d37ca60470760d4288a6f80f304007d92e5c53bab78c9cfd79"
|
||||||
|
dependencies = [
|
||||||
|
"getrandom",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "valuable"
|
||||||
|
version = "0.1.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "version_check"
|
||||||
|
version = "0.9.4"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "waker-fn"
|
||||||
|
version = "1.1.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "9d5b2c62b4012a3e1eca5a7e077d13b3bf498c4073e33ccd58626607748ceeca"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "walkdir"
|
||||||
|
version = "2.3.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "808cf2735cd4b6866113f648b791c6adc5714537bc222d9347bb203386ffda56"
|
||||||
|
dependencies = [
|
||||||
|
"same-file",
|
||||||
|
"winapi",
|
||||||
|
"winapi-util",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasi"
|
||||||
|
version = "0.10.2+wasi-snapshot-preview1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "wasi"
|
name = "wasi"
|
||||||
version = "0.11.0+wasi-snapshot-preview1"
|
version = "0.11.0+wasi-snapshot-preview1"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
|
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen"
|
||||||
|
version = "0.2.84"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "31f8dcbc21f30d9b8f2ea926ecb58f6b91192c17e9d33594b3df58b2007ca53b"
|
||||||
|
dependencies = [
|
||||||
|
"cfg-if",
|
||||||
|
"wasm-bindgen-macro",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-backend"
|
||||||
|
version = "0.2.84"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "95ce90fd5bcc06af55a641a86428ee4229e44e07033963a2290a8e241607ccb9"
|
||||||
|
dependencies = [
|
||||||
|
"bumpalo",
|
||||||
|
"log",
|
||||||
|
"once_cell",
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
"wasm-bindgen-shared",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-macro"
|
||||||
|
version = "0.2.84"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "4c21f77c0bedc37fd5dc21f897894a5ca01e7bb159884559461862ae90c0b4c5"
|
||||||
|
dependencies = [
|
||||||
|
"quote",
|
||||||
|
"wasm-bindgen-macro-support",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-macro-support"
|
||||||
|
version = "0.2.84"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
"wasm-bindgen-backend",
|
||||||
|
"wasm-bindgen-shared",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-shared"
|
||||||
|
version = "0.2.84"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "web-sys"
|
||||||
|
version = "0.3.61"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "e33b99f4b23ba3eec1a53ac264e35a755f00e966e0065077d6027c0f575b0b97"
|
||||||
|
dependencies = [
|
||||||
|
"js-sys",
|
||||||
|
"wasm-bindgen",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wepoll-ffi"
|
||||||
|
version = "0.1.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d743fdedc5c64377b5fc2bc036b01c7fd642205a0d96356034ae3404d49eb7fb"
|
||||||
|
dependencies = [
|
||||||
|
"cc",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "winapi"
|
name = "winapi"
|
||||||
version = "0.3.9"
|
version = "0.3.9"
|
||||||
|
|
@ -269,6 +1028,15 @@ version = "0.4.0"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-util"
|
||||||
|
version = "0.1.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
|
||||||
|
dependencies = [
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "winapi-x86_64-pc-windows-gnu"
|
name = "winapi-x86_64-pc-windows-gnu"
|
||||||
version = "0.4.0"
|
version = "0.4.0"
|
||||||
|
|
@ -360,6 +1128,9 @@ checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
|
||||||
name = "wrapper"
|
name = "wrapper"
|
||||||
version = "0.1.0"
|
version = "0.1.0"
|
||||||
dependencies = [
|
dependencies = [
|
||||||
"resolver",
|
"async-recursion",
|
||||||
|
"moka",
|
||||||
"tokio",
|
"tokio",
|
||||||
|
"tracing",
|
||||||
|
"tracing-subscriber",
|
||||||
]
|
]
|
||||||
|
|
|
||||||
|
|
@ -4,5 +4,8 @@ version = "0.1.0"
|
||||||
edition = "2021"
|
edition = "2021"
|
||||||
|
|
||||||
[dependencies]
|
[dependencies]
|
||||||
resolver = { path = "resolver"}
|
tokio = { version = "1", features = ["full"] }
|
||||||
tokio = { version = "1", features = ["full"] }
|
async-recursion = "1"
|
||||||
|
tracing = "0.1.37"
|
||||||
|
tracing-subscriber = "0.3.16"
|
||||||
|
moka = { version = "0.10.0", features = ["future"] }
|
||||||
7
packet/Cargo.lock
generated
7
packet/Cargo.lock
generated
|
|
@ -1,7 +0,0 @@
|
||||||
# This file is automatically @generated by Cargo.
|
|
||||||
# It is not intended for manual editing.
|
|
||||||
version = 3
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "packet"
|
|
||||||
version = "0.1.0"
|
|
||||||
|
|
@ -1,6 +0,0 @@
|
||||||
[package]
|
|
||||||
name = "packet"
|
|
||||||
version = "0.1.0"
|
|
||||||
edition = "2021"
|
|
||||||
|
|
||||||
[dependencies]
|
|
||||||
|
|
@ -1,227 +0,0 @@
|
||||||
use std::net::{Ipv4Addr, Ipv6Addr};
|
|
||||||
|
|
||||||
use super::{query::QueryType, buffer::PacketBuffer, Result};
|
|
||||||
|
|
||||||
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
|
||||||
#[allow(dead_code)]
|
|
||||||
pub enum DnsRecord {
|
|
||||||
UNKNOWN {
|
|
||||||
domain: String,
|
|
||||||
qtype: u16,
|
|
||||||
data_len: u16,
|
|
||||||
ttl: u32,
|
|
||||||
}, // 0
|
|
||||||
A {
|
|
||||||
domain: String,
|
|
||||||
addr: Ipv4Addr,
|
|
||||||
ttl: u32,
|
|
||||||
}, // 1
|
|
||||||
NS {
|
|
||||||
domain: String,
|
|
||||||
host: String,
|
|
||||||
ttl: u32,
|
|
||||||
}, // 2
|
|
||||||
CNAME {
|
|
||||||
domain: String,
|
|
||||||
host: String,
|
|
||||||
ttl: u32,
|
|
||||||
}, // 5
|
|
||||||
MX {
|
|
||||||
domain: String,
|
|
||||||
priority: u16,
|
|
||||||
host: String,
|
|
||||||
ttl: u32,
|
|
||||||
}, // 15
|
|
||||||
AAAA {
|
|
||||||
domain: String,
|
|
||||||
addr: Ipv6Addr,
|
|
||||||
ttl: u32,
|
|
||||||
}, // 28
|
|
||||||
}
|
|
||||||
|
|
||||||
impl DnsRecord {
|
|
||||||
pub fn read(buffer: &mut PacketBuffer) -> Result<Self> {
|
|
||||||
let mut domain = String::new();
|
|
||||||
buffer.read_qname(&mut domain)?;
|
|
||||||
|
|
||||||
let qtype_num = buffer.read_u16()?;
|
|
||||||
let qtype = QueryType::from_num(qtype_num);
|
|
||||||
let _ = buffer.read_u16()?;
|
|
||||||
let ttl = buffer.read_u32()?;
|
|
||||||
let data_len = buffer.read_u16()?;
|
|
||||||
|
|
||||||
match qtype {
|
|
||||||
QueryType::A => {
|
|
||||||
let raw_addr = buffer.read_u32()?;
|
|
||||||
let addr = Ipv4Addr::new(
|
|
||||||
((raw_addr >> 24) & 0xFF) as u8,
|
|
||||||
((raw_addr >> 16) & 0xFF) as u8,
|
|
||||||
((raw_addr >> 8) & 0xFF) as u8,
|
|
||||||
(raw_addr & 0xFF) as u8,
|
|
||||||
);
|
|
||||||
|
|
||||||
Ok(Self::A { domain, addr, ttl })
|
|
||||||
}
|
|
||||||
QueryType::AAAA => {
|
|
||||||
let raw_addr1 = buffer.read_u32()?;
|
|
||||||
let raw_addr2 = buffer.read_u32()?;
|
|
||||||
let raw_addr3 = buffer.read_u32()?;
|
|
||||||
let raw_addr4 = buffer.read_u32()?;
|
|
||||||
let addr = Ipv6Addr::new(
|
|
||||||
((raw_addr1 >> 16) & 0xFFFF) as u16,
|
|
||||||
(raw_addr1 & 0xFFFF) as u16,
|
|
||||||
((raw_addr2 >> 16) & 0xFFFF) as u16,
|
|
||||||
(raw_addr2 & 0xFFFF) as u16,
|
|
||||||
((raw_addr3 >> 16) & 0xFFFF) as u16,
|
|
||||||
(raw_addr3 & 0xFFFF) as u16,
|
|
||||||
((raw_addr4 >> 16) & 0xFFFF) as u16,
|
|
||||||
(raw_addr4 & 0xFFFF) as u16,
|
|
||||||
);
|
|
||||||
|
|
||||||
Ok(Self::AAAA { domain, addr, ttl })
|
|
||||||
}
|
|
||||||
QueryType::NS => {
|
|
||||||
let mut ns = String::new();
|
|
||||||
buffer.read_qname(&mut ns)?;
|
|
||||||
|
|
||||||
Ok(Self::NS {
|
|
||||||
domain,
|
|
||||||
host: ns,
|
|
||||||
ttl,
|
|
||||||
})
|
|
||||||
}
|
|
||||||
QueryType::CNAME => {
|
|
||||||
let mut cname = String::new();
|
|
||||||
buffer.read_qname(&mut cname)?;
|
|
||||||
|
|
||||||
Ok(Self::CNAME {
|
|
||||||
domain,
|
|
||||||
host: cname,
|
|
||||||
ttl,
|
|
||||||
})
|
|
||||||
}
|
|
||||||
QueryType::MX => {
|
|
||||||
let priority = buffer.read_u16()?;
|
|
||||||
let mut mx = String::new();
|
|
||||||
buffer.read_qname(&mut mx)?;
|
|
||||||
|
|
||||||
Ok(Self::MX {
|
|
||||||
domain,
|
|
||||||
priority,
|
|
||||||
host: mx,
|
|
||||||
ttl,
|
|
||||||
})
|
|
||||||
}
|
|
||||||
QueryType::UNKNOWN(_) => {
|
|
||||||
buffer.step(data_len as usize)?;
|
|
||||||
|
|
||||||
Ok(Self::UNKNOWN {
|
|
||||||
domain,
|
|
||||||
qtype: qtype_num,
|
|
||||||
data_len,
|
|
||||||
ttl,
|
|
||||||
})
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
pub fn write(&self, buffer: &mut PacketBuffer) -> Result<usize> {
|
|
||||||
let start_pos = buffer.pos();
|
|
||||||
|
|
||||||
match *self {
|
|
||||||
Self::A {
|
|
||||||
ref domain,
|
|
||||||
ref addr,
|
|
||||||
ttl,
|
|
||||||
} => {
|
|
||||||
buffer.write_qname(domain)?;
|
|
||||||
buffer.write_u16(QueryType::A.to_num())?;
|
|
||||||
buffer.write_u16(1)?;
|
|
||||||
buffer.write_u32(ttl)?;
|
|
||||||
buffer.write_u16(4)?;
|
|
||||||
|
|
||||||
let octets = addr.octets();
|
|
||||||
buffer.write_u8(octets[0])?;
|
|
||||||
buffer.write_u8(octets[1])?;
|
|
||||||
buffer.write_u8(octets[2])?;
|
|
||||||
buffer.write_u8(octets[3])?;
|
|
||||||
}
|
|
||||||
Self::NS {
|
|
||||||
ref domain,
|
|
||||||
ref host,
|
|
||||||
ttl,
|
|
||||||
} => {
|
|
||||||
buffer.write_qname(domain)?;
|
|
||||||
buffer.write_u16(QueryType::NS.to_num())?;
|
|
||||||
buffer.write_u16(1)?;
|
|
||||||
buffer.write_u32(ttl)?;
|
|
||||||
|
|
||||||
let pos = buffer.pos();
|
|
||||||
buffer.write_u16(0)?;
|
|
||||||
|
|
||||||
buffer.write_qname(host)?;
|
|
||||||
|
|
||||||
let size = buffer.pos() - (pos + 2);
|
|
||||||
buffer.set_u16(pos, size as u16)?;
|
|
||||||
}
|
|
||||||
Self::CNAME {
|
|
||||||
ref domain,
|
|
||||||
ref host,
|
|
||||||
ttl,
|
|
||||||
} => {
|
|
||||||
buffer.write_qname(domain)?;
|
|
||||||
buffer.write_u16(QueryType::CNAME.to_num())?;
|
|
||||||
buffer.write_u16(1)?;
|
|
||||||
buffer.write_u32(ttl)?;
|
|
||||||
|
|
||||||
let pos = buffer.pos();
|
|
||||||
buffer.write_u16(0)?;
|
|
||||||
|
|
||||||
buffer.write_qname(host)?;
|
|
||||||
|
|
||||||
let size = buffer.pos() - (pos + 2);
|
|
||||||
buffer.set_u16(pos, size as u16)?;
|
|
||||||
}
|
|
||||||
Self::MX {
|
|
||||||
ref domain,
|
|
||||||
priority,
|
|
||||||
ref host,
|
|
||||||
ttl,
|
|
||||||
} => {
|
|
||||||
buffer.write_qname(domain)?;
|
|
||||||
buffer.write_u16(QueryType::MX.to_num())?;
|
|
||||||
buffer.write_u16(1)?;
|
|
||||||
buffer.write_u32(ttl)?;
|
|
||||||
|
|
||||||
let pos = buffer.pos();
|
|
||||||
buffer.write_u16(0)?;
|
|
||||||
|
|
||||||
buffer.write_u16(priority)?;
|
|
||||||
buffer.write_qname(host)?;
|
|
||||||
|
|
||||||
let size = buffer.pos() - (pos + 2);
|
|
||||||
buffer.set_u16(pos, size as u16)?;
|
|
||||||
}
|
|
||||||
Self::AAAA {
|
|
||||||
ref domain,
|
|
||||||
ref addr,
|
|
||||||
ttl,
|
|
||||||
} => {
|
|
||||||
buffer.write_qname(domain)?;
|
|
||||||
buffer.write_u16(QueryType::AAAA.to_num())?;
|
|
||||||
buffer.write_u16(1)?;
|
|
||||||
buffer.write_u32(ttl)?;
|
|
||||||
buffer.write_u16(16)?;
|
|
||||||
|
|
||||||
for octet in &addr.segments() {
|
|
||||||
buffer.write_u16(*octet)?;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
Self::UNKNOWN { .. } => {
|
|
||||||
println!("Skipping record: {self:?}");
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
Ok(buffer.pos() - start_pos)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
357
resolver/Cargo.lock
generated
357
resolver/Cargo.lock
generated
|
|
@ -1,357 +0,0 @@
|
||||||
# This file is automatically @generated by Cargo.
|
|
||||||
# It is not intended for manual editing.
|
|
||||||
version = 3
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "async-recursion"
|
|
||||||
version = "1.0.2"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "3b015a331cc64ebd1774ba119538573603427eaace0a1950c423ab971f903796"
|
|
||||||
dependencies = [
|
|
||||||
"proc-macro2",
|
|
||||||
"quote",
|
|
||||||
"syn",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "autocfg"
|
|
||||||
version = "1.1.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "bitflags"
|
|
||||||
version = "1.3.2"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "bytes"
|
|
||||||
version = "1.4.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "cfg-if"
|
|
||||||
version = "1.0.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "hermit-abi"
|
|
||||||
version = "0.2.6"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"
|
|
||||||
dependencies = [
|
|
||||||
"libc",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "libc"
|
|
||||||
version = "0.2.139"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "lock_api"
|
|
||||||
version = "0.4.9"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
|
|
||||||
dependencies = [
|
|
||||||
"autocfg",
|
|
||||||
"scopeguard",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "log"
|
|
||||||
version = "0.4.17"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
|
|
||||||
dependencies = [
|
|
||||||
"cfg-if",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "memchr"
|
|
||||||
version = "2.5.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "mio"
|
|
||||||
version = "0.8.6"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
|
|
||||||
dependencies = [
|
|
||||||
"libc",
|
|
||||||
"log",
|
|
||||||
"wasi",
|
|
||||||
"windows-sys 0.45.0",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "num_cpus"
|
|
||||||
version = "1.15.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
|
|
||||||
dependencies = [
|
|
||||||
"hermit-abi",
|
|
||||||
"libc",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "packet"
|
|
||||||
version = "0.1.0"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "parking_lot"
|
|
||||||
version = "0.12.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
|
|
||||||
dependencies = [
|
|
||||||
"lock_api",
|
|
||||||
"parking_lot_core",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "parking_lot_core"
|
|
||||||
version = "0.9.7"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "9069cbb9f99e3a5083476ccb29ceb1de18b9118cafa53e90c9551235de2b9521"
|
|
||||||
dependencies = [
|
|
||||||
"cfg-if",
|
|
||||||
"libc",
|
|
||||||
"redox_syscall",
|
|
||||||
"smallvec",
|
|
||||||
"windows-sys 0.45.0",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "pin-project-lite"
|
|
||||||
version = "0.2.9"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "proc-macro2"
|
|
||||||
version = "1.0.51"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "5d727cae5b39d21da60fa540906919ad737832fe0b1c165da3a34d6548c849d6"
|
|
||||||
dependencies = [
|
|
||||||
"unicode-ident",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "quote"
|
|
||||||
version = "1.0.23"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "8856d8364d252a14d474036ea1358d63c9e6965c8e5c1885c18f73d70bff9c7b"
|
|
||||||
dependencies = [
|
|
||||||
"proc-macro2",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "redox_syscall"
|
|
||||||
version = "0.2.16"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
|
|
||||||
dependencies = [
|
|
||||||
"bitflags",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "resolver"
|
|
||||||
version = "0.1.0"
|
|
||||||
dependencies = [
|
|
||||||
"async-recursion",
|
|
||||||
"packet",
|
|
||||||
"tokio",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "scopeguard"
|
|
||||||
version = "1.1.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "signal-hook-registry"
|
|
||||||
version = "1.4.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "d8229b473baa5980ac72ef434c4415e70c4b5e71b423043adb4ba059f89c99a1"
|
|
||||||
dependencies = [
|
|
||||||
"libc",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "smallvec"
|
|
||||||
version = "1.10.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "socket2"
|
|
||||||
version = "0.4.7"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "02e2d2db9033d13a1567121ddd7a095ee144db4e1ca1b1bda3419bc0da294ebd"
|
|
||||||
dependencies = [
|
|
||||||
"libc",
|
|
||||||
"winapi",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "syn"
|
|
||||||
version = "1.0.109"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
|
|
||||||
dependencies = [
|
|
||||||
"proc-macro2",
|
|
||||||
"quote",
|
|
||||||
"unicode-ident",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "tokio"
|
|
||||||
version = "1.25.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "c8e00990ebabbe4c14c08aca901caed183ecd5c09562a12c824bb53d3c3fd3af"
|
|
||||||
dependencies = [
|
|
||||||
"autocfg",
|
|
||||||
"bytes",
|
|
||||||
"libc",
|
|
||||||
"memchr",
|
|
||||||
"mio",
|
|
||||||
"num_cpus",
|
|
||||||
"parking_lot",
|
|
||||||
"pin-project-lite",
|
|
||||||
"signal-hook-registry",
|
|
||||||
"socket2",
|
|
||||||
"tokio-macros",
|
|
||||||
"windows-sys 0.42.0",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "tokio-macros"
|
|
||||||
version = "1.8.2"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "d266c00fde287f55d3f1c3e96c500c362a2b8c695076ec180f27918820bc6df8"
|
|
||||||
dependencies = [
|
|
||||||
"proc-macro2",
|
|
||||||
"quote",
|
|
||||||
"syn",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "unicode-ident"
|
|
||||||
version = "1.0.6"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "84a22b9f218b40614adcb3f4ff08b703773ad44fa9423e4e0d346d5db86e4ebc"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "wasi"
|
|
||||||
version = "0.11.0+wasi-snapshot-preview1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "winapi"
|
|
||||||
version = "0.3.9"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
|
||||||
dependencies = [
|
|
||||||
"winapi-i686-pc-windows-gnu",
|
|
||||||
"winapi-x86_64-pc-windows-gnu",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "winapi-i686-pc-windows-gnu"
|
|
||||||
version = "0.4.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "winapi-x86_64-pc-windows-gnu"
|
|
||||||
version = "0.4.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows-sys"
|
|
||||||
version = "0.42.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
|
|
||||||
dependencies = [
|
|
||||||
"windows_aarch64_gnullvm",
|
|
||||||
"windows_aarch64_msvc",
|
|
||||||
"windows_i686_gnu",
|
|
||||||
"windows_i686_msvc",
|
|
||||||
"windows_x86_64_gnu",
|
|
||||||
"windows_x86_64_gnullvm",
|
|
||||||
"windows_x86_64_msvc",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows-sys"
|
|
||||||
version = "0.45.0"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
|
|
||||||
dependencies = [
|
|
||||||
"windows-targets",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows-targets"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "8e2522491fbfcd58cc84d47aeb2958948c4b8982e9a2d8a2a35bbaed431390e7"
|
|
||||||
dependencies = [
|
|
||||||
"windows_aarch64_gnullvm",
|
|
||||||
"windows_aarch64_msvc",
|
|
||||||
"windows_i686_gnu",
|
|
||||||
"windows_i686_msvc",
|
|
||||||
"windows_x86_64_gnu",
|
|
||||||
"windows_x86_64_gnullvm",
|
|
||||||
"windows_x86_64_msvc",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows_aarch64_gnullvm"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "8c9864e83243fdec7fc9c5444389dcbbfd258f745e7853198f365e3c4968a608"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows_aarch64_msvc"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "4c8b1b673ffc16c47a9ff48570a9d85e25d265735c503681332589af6253c6c7"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows_i686_gnu"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "de3887528ad530ba7bdbb1faa8275ec7a1155a45ffa57c37993960277145d640"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows_i686_msvc"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "bf4d1122317eddd6ff351aa852118a2418ad4214e6613a50e0191f7004372605"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows_x86_64_gnu"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "c1040f221285e17ebccbc2591ffdc2d44ee1f9186324dd3e84e99ac68d699c45"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows_x86_64_gnullvm"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
|
|
||||||
|
|
||||||
[[package]]
|
|
||||||
name = "windows_x86_64_msvc"
|
|
||||||
version = "0.42.1"
|
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
|
|
||||||
|
|
@ -1,9 +0,0 @@
|
||||||
[package]
|
|
||||||
name = "resolver"
|
|
||||||
version = "0.1.0"
|
|
||||||
edition = "2021"
|
|
||||||
|
|
||||||
[dependencies]
|
|
||||||
packet = { path = "../packet" }
|
|
||||||
tokio = { version = "1", features = ["full"] }
|
|
||||||
async-recursion = "1"
|
|
||||||
|
|
@ -1,23 +0,0 @@
|
||||||
use std::net::IpAddr;
|
|
||||||
|
|
||||||
#[derive(Clone)]
|
|
||||||
pub struct Config {
|
|
||||||
fallback: IpAddr
|
|
||||||
}
|
|
||||||
|
|
||||||
impl Config {
|
|
||||||
|
|
||||||
pub fn new() -> Self {
|
|
||||||
let fallback = "9.9.9.9".parse::<IpAddr>().expect("Failed to create default ns fallback");
|
|
||||||
Self { fallback }
|
|
||||||
}
|
|
||||||
|
|
||||||
pub fn get_fallback_ns(&self) -> &IpAddr {
|
|
||||||
&self.fallback
|
|
||||||
}
|
|
||||||
|
|
||||||
pub fn set_fallback_ns(&mut self, addr: &IpAddr) {
|
|
||||||
self.fallback = *addr;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,33 +0,0 @@
|
||||||
use std::net::SocketAddr;
|
|
||||||
use server::handle_query;
|
|
||||||
use tokio::net::UdpSocket;
|
|
||||||
use packet::Result;
|
|
||||||
|
|
||||||
mod server;
|
|
||||||
mod config;
|
|
||||||
|
|
||||||
pub use config::Config as Config;
|
|
||||||
|
|
||||||
pub struct DnsResolver {
|
|
||||||
config: Config
|
|
||||||
}
|
|
||||||
|
|
||||||
impl DnsResolver {
|
|
||||||
|
|
||||||
pub fn new(config: Config) -> Self {
|
|
||||||
Self { config }
|
|
||||||
}
|
|
||||||
|
|
||||||
pub async fn bind(self, addr: SocketAddr) -> Result<()> {
|
|
||||||
|
|
||||||
let socket = UdpSocket::bind(addr).await?;
|
|
||||||
|
|
||||||
loop {
|
|
||||||
match handle_query(&socket, &self.config).await {
|
|
||||||
Ok(_) => {}
|
|
||||||
Err(e) => eprintln!("An error occurred: {e}"),
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,121 +0,0 @@
|
||||||
use std::net::IpAddr;
|
|
||||||
use async_recursion::async_recursion;
|
|
||||||
use packet::{PacketType, Packet, Result, PacketQuestion, PacketBuffer, ResultCode};
|
|
||||||
use tokio::net::UdpSocket;
|
|
||||||
|
|
||||||
use crate::config::Config;
|
|
||||||
|
|
||||||
|
|
||||||
async fn lookup(qname: &str, qtype: PacketType, server: (IpAddr, u16)) -> Result<Packet> {
|
|
||||||
let socket = UdpSocket::bind("0.0.0.0:43210").await?;
|
|
||||||
|
|
||||||
let mut packet = Packet::new();
|
|
||||||
|
|
||||||
packet.header.id = 6666;
|
|
||||||
packet.header.questions = 1;
|
|
||||||
packet.header.recursion_desired = true;
|
|
||||||
packet
|
|
||||||
.questions
|
|
||||||
.push(PacketQuestion::new(qname.to_string(), qtype));
|
|
||||||
|
|
||||||
let mut req_buffer = PacketBuffer::new();
|
|
||||||
packet.write(&mut req_buffer)?;
|
|
||||||
socket.send_to(&req_buffer.buf[0..req_buffer.pos], server).await?;
|
|
||||||
|
|
||||||
let mut res_buffer = PacketBuffer::new();
|
|
||||||
socket.recv_from(&mut res_buffer.buf).await?;
|
|
||||||
|
|
||||||
Packet::from_buffer(&mut res_buffer)
|
|
||||||
}
|
|
||||||
|
|
||||||
#[async_recursion]
|
|
||||||
async fn recursive_lookup(qname: &str, qtype: PacketType, config: &Config) -> Result<Packet> {
|
|
||||||
|
|
||||||
let mut ns = *config.get_fallback_ns();
|
|
||||||
|
|
||||||
loop {
|
|
||||||
println!("attempting lookup of {qtype:?} {qname} with ns {ns}");
|
|
||||||
|
|
||||||
let ns_copy = ns;
|
|
||||||
|
|
||||||
let server = (ns_copy, 53);
|
|
||||||
let response = lookup(qname, qtype, server).await?;
|
|
||||||
|
|
||||||
if !response.answers.is_empty() && response.header.rescode == ResultCode::NOERROR {
|
|
||||||
return Ok(response);
|
|
||||||
}
|
|
||||||
|
|
||||||
if response.header.rescode == ResultCode::NXDOMAIN {
|
|
||||||
return Ok(response);
|
|
||||||
}
|
|
||||||
|
|
||||||
if let Some(new_ns) = response.get_resolved_ns(qname) {
|
|
||||||
ns = new_ns;
|
|
||||||
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
let new_ns_name = match response.get_unresolved_ns(qname) {
|
|
||||||
Some(x) => x,
|
|
||||||
None => return Ok(response),
|
|
||||||
};
|
|
||||||
|
|
||||||
let recursive_response = recursive_lookup(new_ns_name, PacketType::A, config).await?;
|
|
||||||
|
|
||||||
if let Some(new_ns) = recursive_response.get_random_a() {
|
|
||||||
ns = new_ns;
|
|
||||||
} else {
|
|
||||||
return Ok(response);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
pub async fn handle_query(socket: &UdpSocket, config: &Config) -> Result<()> {
|
|
||||||
let mut req_buffer = PacketBuffer::new();
|
|
||||||
|
|
||||||
let (_, src) = socket.recv_from(&mut req_buffer.buf).await?;
|
|
||||||
|
|
||||||
let mut request = Packet::from_buffer(&mut req_buffer)?;
|
|
||||||
|
|
||||||
let mut packet = Packet::new();
|
|
||||||
packet.header.id = request.header.id;
|
|
||||||
packet.header.recursion_desired = true;
|
|
||||||
packet.header.recursion_available = true;
|
|
||||||
packet.header.response = true;
|
|
||||||
|
|
||||||
if let Some(question) = request.questions.pop() {
|
|
||||||
println!("Received query: {question:?}");
|
|
||||||
|
|
||||||
if let Ok(result) = recursive_lookup(&question.name, question.qtype, config).await {
|
|
||||||
packet.questions.push(question.clone());
|
|
||||||
packet.header.rescode = result.header.rescode;
|
|
||||||
|
|
||||||
for rec in result.answers {
|
|
||||||
println!("Answer: {rec:?}");
|
|
||||||
packet.answers.push(rec);
|
|
||||||
}
|
|
||||||
for rec in result.authorities {
|
|
||||||
println!("Authority: {rec:?}");
|
|
||||||
packet.authorities.push(rec);
|
|
||||||
}
|
|
||||||
for rec in result.resources {
|
|
||||||
println!("Resource: {rec:?}");
|
|
||||||
packet.resources.push(rec);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
packet.header.rescode = ResultCode::SERVFAIL;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
packet.header.rescode = ResultCode::FORMERR;
|
|
||||||
}
|
|
||||||
|
|
||||||
let mut res_buffer = PacketBuffer::new();
|
|
||||||
packet.write(&mut res_buffer)?;
|
|
||||||
|
|
||||||
let len = res_buffer.pos();
|
|
||||||
let data = res_buffer.get_range(0, len)?;
|
|
||||||
|
|
||||||
socket.send_to(data, src).await?;
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
35
src/config.rs
Normal file
35
src/config.rs
Normal file
|
|
@ -0,0 +1,35 @@
|
||||||
|
use std::net::IpAddr;
|
||||||
|
|
||||||
|
#[derive(Clone)]
|
||||||
|
pub struct Config {
|
||||||
|
fallback: IpAddr,
|
||||||
|
port: u16,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Config {
|
||||||
|
pub fn new() -> Self {
|
||||||
|
let fallback = "9.9.9.9"
|
||||||
|
.parse::<IpAddr>()
|
||||||
|
.expect("Failed to create default ns fallback");
|
||||||
|
Self {
|
||||||
|
fallback,
|
||||||
|
port: 2000,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn get_fallback_ns(&self) -> &IpAddr {
|
||||||
|
&self.fallback
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn get_port(&self) -> u16 {
|
||||||
|
self.port
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn set_fallback_ns(&mut self, addr: &IpAddr) {
|
||||||
|
self.fallback = *addr;
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn set_port(&mut self, port: u16) {
|
||||||
|
self.port = port;
|
||||||
|
}
|
||||||
|
}
|
||||||
54
src/main.rs
54
src/main.rs
|
|
@ -1,18 +1,48 @@
|
||||||
use std::net::SocketAddr;
|
use std::{time::{UNIX_EPOCH, SystemTime}, env, net::IpAddr};
|
||||||
|
|
||||||
use resolver::{DnsResolver, Config};
|
use config::Config;
|
||||||
|
|
||||||
|
use server::server::Server;
|
||||||
|
use tracing::metadata::LevelFilter;
|
||||||
|
use tracing_subscriber::{
|
||||||
|
filter::filter_fn, prelude::__tracing_subscriber_SubscriberExt, util::SubscriberInitExt, Layer,
|
||||||
|
};
|
||||||
|
|
||||||
|
mod config;
|
||||||
|
mod packet;
|
||||||
|
mod server;
|
||||||
|
|
||||||
#[tokio::main]
|
#[tokio::main]
|
||||||
async fn main () {
|
async fn main() {
|
||||||
|
tracing_subscriber::registry()
|
||||||
let config = Config::new();
|
.with(
|
||||||
|
tracing_subscriber::fmt::layer()
|
||||||
|
.with_filter(LevelFilter::TRACE)
|
||||||
|
.with_filter(filter_fn(|metadata| {
|
||||||
|
metadata.target().starts_with("wrapper")
|
||||||
|
})),
|
||||||
|
)
|
||||||
|
.init();
|
||||||
|
|
||||||
let resolver = DnsResolver::new(config);
|
let mut config = Config::new();
|
||||||
|
|
||||||
let addr = "[::]:2000".parse::<SocketAddr>()
|
if let Ok(port) = env::var("PORT").unwrap_or(String::new()).parse::<u16>() {
|
||||||
.expect("Failed to create binding");
|
config.set_port(port);
|
||||||
|
}
|
||||||
resolver.bind(addr).await
|
|
||||||
.expect("Failed to start dns server");
|
|
||||||
|
|
||||||
}
|
if let Ok(fallback) = env::var("FALLBACK_DNS").unwrap_or(String::new()).parse::<IpAddr>() {
|
||||||
|
config.set_fallback_ns(&fallback);
|
||||||
|
}
|
||||||
|
|
||||||
|
let server = Server::new(config).await.expect("Failed to bind server");
|
||||||
|
|
||||||
|
server.run().await.unwrap();
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn get_time() -> u64 {
|
||||||
|
let start = SystemTime::now();
|
||||||
|
let since_the_epoch = start
|
||||||
|
.duration_since(UNIX_EPOCH)
|
||||||
|
.expect("Time went backwards");
|
||||||
|
since_the_epoch.as_millis() as u64
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -1,15 +1,27 @@
|
||||||
use super::Result;
|
use super::Result;
|
||||||
|
|
||||||
pub struct PacketBuffer {
|
pub struct PacketBuffer {
|
||||||
pub buf: [u8; 512],
|
pub buf: Vec<u8>,
|
||||||
pub pos: usize,
|
pub pos: usize,
|
||||||
|
pub size: usize,
|
||||||
}
|
}
|
||||||
|
|
||||||
impl PacketBuffer {
|
impl PacketBuffer {
|
||||||
pub fn new() -> Self {
|
pub fn new(buf: Vec<u8>) -> Self {
|
||||||
Self {
|
Self {
|
||||||
buf: [0; 512],
|
buf,
|
||||||
pos: 0,
|
pos: 0,
|
||||||
|
size: 0,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn check(&mut self, pos: usize) {
|
||||||
|
if self.size < pos {
|
||||||
|
self.size = pos;
|
||||||
|
}
|
||||||
|
|
||||||
|
if self.buf.len() <= self.size {
|
||||||
|
self.buf.resize(self.size + 1, 0x00);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -30,9 +42,11 @@ impl PacketBuffer {
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn read(&mut self) -> Result<u8> {
|
pub fn read(&mut self) -> Result<u8> {
|
||||||
if self.pos >= 512 {
|
// if self.pos >= 512 {
|
||||||
return Err("End of buffer".into());
|
// error!("Tried to read past end of buffer");
|
||||||
}
|
// return Err("End of buffer".into());
|
||||||
|
// }
|
||||||
|
self.check(self.pos);
|
||||||
let res = self.buf[self.pos];
|
let res = self.buf[self.pos];
|
||||||
self.pos += 1;
|
self.pos += 1;
|
||||||
|
|
||||||
|
|
@ -40,16 +54,20 @@ impl PacketBuffer {
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn get(&mut self, pos: usize) -> Result<u8> {
|
pub fn get(&mut self, pos: usize) -> Result<u8> {
|
||||||
if pos >= 512 {
|
// if pos >= 512 {
|
||||||
return Err("End of buffer".into());
|
// error!("Tried to read past end of buffer");
|
||||||
}
|
// return Err("End of buffer".into());
|
||||||
|
// }
|
||||||
|
self.check(pos);
|
||||||
Ok(self.buf[pos])
|
Ok(self.buf[pos])
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn get_range(&mut self, start: usize, len: usize) -> Result<&[u8]> {
|
pub fn get_range(&mut self, start: usize, len: usize) -> Result<&[u8]> {
|
||||||
if start + len >= 512 {
|
// if start + len >= 512 {
|
||||||
return Err("End of buffer".into());
|
// error!("Tried to read past end of buffer");
|
||||||
}
|
// return Err("End of buffer".into());
|
||||||
|
// }
|
||||||
|
self.check(start + len);
|
||||||
Ok(&self.buf[start..start + len])
|
Ok(&self.buf[start..start + len])
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -85,13 +103,7 @@ impl PacketBuffer {
|
||||||
|
|
||||||
let len = self.get(pos)?;
|
let len = self.get(pos)?;
|
||||||
|
|
||||||
// A two byte sequence, where the two highest bits of the first byte is
|
|
||||||
// set, represents a offset relative to the start of the buffer. We
|
|
||||||
// handle this by jumping to the offset, setting a flag to indicate
|
|
||||||
// that we shouldn't update the shared buffer position once done.
|
|
||||||
if (len & 0xC0) == 0xC0 {
|
if (len & 0xC0) == 0xC0 {
|
||||||
// When a jump is performed, we only modify the shared buffer
|
|
||||||
// position once, and avoid making the change later on.
|
|
||||||
if !jumped {
|
if !jumped {
|
||||||
self.seek(pos + 2)?;
|
self.seek(pos + 2)?;
|
||||||
}
|
}
|
||||||
|
|
@ -106,7 +118,6 @@ impl PacketBuffer {
|
||||||
|
|
||||||
pos += 1;
|
pos += 1;
|
||||||
|
|
||||||
// Names are terminated by an empty label of length 0
|
|
||||||
if len == 0 {
|
if len == 0 {
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
|
@ -128,10 +139,38 @@ impl PacketBuffer {
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn write(&mut self, val: u8) -> Result<()> {
|
pub fn read_string(&mut self, outstr: &mut String) -> Result<()> {
|
||||||
if self.pos >= 512 {
|
let len = self.read()?;
|
||||||
return Err("End of buffer".into());
|
|
||||||
|
self.read_string_n(outstr, len)?;
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn read_string_n(&mut self, outstr: &mut String, len: u8) -> Result<()> {
|
||||||
|
let mut pos = self.pos;
|
||||||
|
|
||||||
|
let str_buffer = self.get_range(pos, len as usize)?;
|
||||||
|
|
||||||
|
let mut i = 0;
|
||||||
|
for b in str_buffer {
|
||||||
|
let c = *b as char;
|
||||||
|
if c == '\0' {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
outstr.push(c);
|
||||||
|
i += 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
pos += i;
|
||||||
|
self.seek(pos)?;
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn write(&mut self, val: u8) -> Result<()> {
|
||||||
|
self.check(self.pos);
|
||||||
|
|
||||||
self.buf[self.pos] = val;
|
self.buf[self.pos] = val;
|
||||||
self.pos += 1;
|
self.pos += 1;
|
||||||
Ok(())
|
Ok(())
|
||||||
|
|
@ -162,9 +201,6 @@ impl PacketBuffer {
|
||||||
pub fn write_qname(&mut self, qname: &str) -> Result<()> {
|
pub fn write_qname(&mut self, qname: &str) -> Result<()> {
|
||||||
for label in qname.split('.') {
|
for label in qname.split('.') {
|
||||||
let len = label.len();
|
let len = label.len();
|
||||||
if len > 0x34 {
|
|
||||||
return Err("Single label exceeds 63 characters of length".into());
|
|
||||||
}
|
|
||||||
|
|
||||||
self.write_u8(len as u8)?;
|
self.write_u8(len as u8)?;
|
||||||
for b in label.as_bytes() {
|
for b in label.as_bytes() {
|
||||||
|
|
@ -177,6 +213,14 @@ impl PacketBuffer {
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
|
|
||||||
|
pub fn write_string(&mut self, text: &str) -> Result<()> {
|
||||||
|
for b in text.as_bytes() {
|
||||||
|
self.write_u8(*b)?;
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
pub fn set(&mut self, pos: usize, val: u8) -> Result<()> {
|
pub fn set(&mut self, pos: usize, val: u8) -> Result<()> {
|
||||||
self.buf[pos] = val;
|
self.buf[pos] = val;
|
||||||
|
|
||||||
|
|
@ -189,4 +233,4 @@ impl PacketBuffer {
|
||||||
|
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
@ -1,4 +1,4 @@
|
||||||
use super::{buffer::PacketBuffer, Result, result::ResultCode};
|
use super::{buffer::PacketBuffer, result::ResultCode, Result};
|
||||||
|
|
||||||
#[derive(Clone, Debug)]
|
#[derive(Clone, Debug)]
|
||||||
pub struct DnsHeader {
|
pub struct DnsHeader {
|
||||||
|
|
@ -48,7 +48,6 @@ impl DnsHeader {
|
||||||
|
|
||||||
pub fn read(&mut self, buffer: &mut PacketBuffer) -> Result<()> {
|
pub fn read(&mut self, buffer: &mut PacketBuffer) -> Result<()> {
|
||||||
self.id = buffer.read_u16()?;
|
self.id = buffer.read_u16()?;
|
||||||
|
|
||||||
let flags = buffer.read_u16()?;
|
let flags = buffer.read_u16()?;
|
||||||
let a = (flags >> 8) as u8;
|
let a = (flags >> 8) as u8;
|
||||||
let b = (flags & 0xFF) as u8;
|
let b = (flags & 0xFF) as u8;
|
||||||
|
|
@ -99,4 +98,4 @@ impl DnsHeader {
|
||||||
|
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
@ -1,16 +1,19 @@
|
||||||
use std::net::IpAddr;
|
use std::net::IpAddr;
|
||||||
|
|
||||||
use self::{header::DnsHeader, question::DnsQuestion, record::DnsRecord, query::QueryType};
|
use self::{
|
||||||
|
buffer::PacketBuffer, header::DnsHeader, query::QueryType, question::DnsQuestion,
|
||||||
|
record::DnsRecord,
|
||||||
|
};
|
||||||
|
|
||||||
type Error = Box<dyn std::error::Error>;
|
type Error = Box<dyn std::error::Error>;
|
||||||
pub type Result<T> = std::result::Result<T, Error>;
|
pub type Result<T> = std::result::Result<T, Error>;
|
||||||
|
|
||||||
mod buffer;
|
pub mod buffer;
|
||||||
mod header;
|
pub mod header;
|
||||||
mod query;
|
pub mod query;
|
||||||
mod question;
|
pub mod question;
|
||||||
mod record;
|
pub mod record;
|
||||||
mod result;
|
pub mod result;
|
||||||
|
|
||||||
#[derive(Clone, Debug)]
|
#[derive(Clone, Debug)]
|
||||||
pub struct Packet {
|
pub struct Packet {
|
||||||
|
|
@ -21,12 +24,6 @@ pub struct Packet {
|
||||||
pub resources: Vec<DnsRecord>,
|
pub resources: Vec<DnsRecord>,
|
||||||
}
|
}
|
||||||
|
|
||||||
pub use buffer::PacketBuffer;
|
|
||||||
pub use result::ResultCode;
|
|
||||||
|
|
||||||
pub use query::QueryType as PacketType;
|
|
||||||
pub use question::DnsQuestion as PacketQuestion;
|
|
||||||
|
|
||||||
impl Packet {
|
impl Packet {
|
||||||
pub fn new() -> Self {
|
pub fn new() -> Self {
|
||||||
Self {
|
Self {
|
||||||
|
|
@ -88,9 +85,6 @@ impl Packet {
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
|
|
||||||
/// It's useful to be able to pick a random A record from a packet. When we
|
|
||||||
/// get multiple IP's for a single name, it doesn't matter which one we
|
|
||||||
/// choose, so in those cases we can now pick one at random.
|
|
||||||
pub fn get_random_a(&self) -> Option<IpAddr> {
|
pub fn get_random_a(&self) -> Option<IpAddr> {
|
||||||
self.answers
|
self.answers
|
||||||
.iter()
|
.iter()
|
||||||
|
|
@ -102,55 +96,35 @@ impl Packet {
|
||||||
.next()
|
.next()
|
||||||
}
|
}
|
||||||
|
|
||||||
/// A helper function which returns an iterator over all name servers in
|
|
||||||
/// the authorities section, represented as (domain, host) tuples
|
|
||||||
fn get_ns<'a>(&'a self, qname: &'a str) -> impl Iterator<Item = (&'a str, &'a str)> {
|
fn get_ns<'a>(&'a self, qname: &'a str) -> impl Iterator<Item = (&'a str, &'a str)> {
|
||||||
self.authorities
|
self.authorities
|
||||||
.iter()
|
.iter()
|
||||||
// In practice, these are always NS records in well formed packages.
|
|
||||||
// Convert the NS records to a tuple which has only the data we need
|
|
||||||
// to make it easy to work with.
|
|
||||||
.filter_map(|record| match record {
|
.filter_map(|record| match record {
|
||||||
DnsRecord::NS { domain, host, .. } => Some((domain.as_str(), host.as_str())),
|
DnsRecord::NS { domain, host, .. } => Some((domain.as_str(), host.as_str())),
|
||||||
_ => None,
|
_ => None,
|
||||||
})
|
})
|
||||||
// Discard servers which aren't authoritative to our query
|
|
||||||
.filter(move |(domain, _)| qname.ends_with(*domain))
|
.filter(move |(domain, _)| qname.ends_with(*domain))
|
||||||
}
|
}
|
||||||
|
|
||||||
/// We'll use the fact that name servers often bundle the corresponding
|
|
||||||
/// A records when replying to an NS query to implement a function that
|
|
||||||
/// returns the actual IP for an NS record if possible.
|
|
||||||
pub fn get_resolved_ns(&self, qname: &str) -> Option<IpAddr> {
|
pub fn get_resolved_ns(&self, qname: &str) -> Option<IpAddr> {
|
||||||
// Get an iterator over the nameservers in the authorities section
|
|
||||||
self.get_ns(qname)
|
self.get_ns(qname)
|
||||||
// Now we need to look for a matching A record in the additional
|
|
||||||
// section. Since we just want the first valid record, we can just
|
|
||||||
// build a stream of matching records.
|
|
||||||
.flat_map(|(_, host)| {
|
.flat_map(|(_, host)| {
|
||||||
self.resources
|
self.resources
|
||||||
.iter()
|
.iter()
|
||||||
// Filter for A records where the domain match the host
|
|
||||||
// of the NS record that we are currently processing
|
|
||||||
.filter_map(move |record| match record {
|
.filter_map(move |record| match record {
|
||||||
DnsRecord::A { domain, addr, .. } if domain == host => Some(IpAddr::V4(*addr)),
|
DnsRecord::A { domain, addr, .. } if domain == host => {
|
||||||
DnsRecord::AAAA { domain, addr, .. } if domain == host => Some(IpAddr::V6(*addr)),
|
Some(IpAddr::V4(*addr))
|
||||||
|
}
|
||||||
|
DnsRecord::AAAA { domain, addr, .. } if domain == host => {
|
||||||
|
Some(IpAddr::V6(*addr))
|
||||||
|
}
|
||||||
_ => None,
|
_ => None,
|
||||||
})
|
})
|
||||||
})
|
})
|
||||||
// Finally, pick the first valid entry
|
|
||||||
.next()
|
.next()
|
||||||
}
|
}
|
||||||
|
|
||||||
/// However, not all name servers are as that nice. In certain cases there won't
|
|
||||||
/// be any A records in the additional section, and we'll have to perform *another*
|
|
||||||
/// lookup in the midst. For this, we introduce a method for returning the host
|
|
||||||
/// name of an appropriate name server.
|
|
||||||
pub fn get_unresolved_ns<'a>(&'a self, qname: &'a str) -> Option<&'a str> {
|
pub fn get_unresolved_ns<'a>(&'a self, qname: &'a str) -> Option<&'a str> {
|
||||||
// Get an iterator over the nameservers in the authorities section
|
self.get_ns(qname).map(|(_, host)| host).next()
|
||||||
self.get_ns(qname)
|
|
||||||
.map(|(_, host)| host)
|
|
||||||
// Finally, pick the first valid entry
|
|
||||||
.next()
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
@ -4,8 +4,14 @@ pub enum QueryType {
|
||||||
A, // 1
|
A, // 1
|
||||||
NS, // 2
|
NS, // 2
|
||||||
CNAME, // 5
|
CNAME, // 5
|
||||||
|
SOA, // 6
|
||||||
|
PTR, // 12
|
||||||
MX, // 15
|
MX, // 15
|
||||||
|
TXT, // 16
|
||||||
AAAA, // 28
|
AAAA, // 28
|
||||||
|
SRV, // 33
|
||||||
|
OPT, // 41
|
||||||
|
CAA, // 257
|
||||||
}
|
}
|
||||||
|
|
||||||
impl QueryType {
|
impl QueryType {
|
||||||
|
|
@ -15,8 +21,14 @@ impl QueryType {
|
||||||
Self::A => 1,
|
Self::A => 1,
|
||||||
Self::NS => 2,
|
Self::NS => 2,
|
||||||
Self::CNAME => 5,
|
Self::CNAME => 5,
|
||||||
|
Self::SOA => 6,
|
||||||
|
Self::PTR => 12,
|
||||||
Self::MX => 15,
|
Self::MX => 15,
|
||||||
|
Self::TXT => 16,
|
||||||
Self::AAAA => 28,
|
Self::AAAA => 28,
|
||||||
|
Self::SRV => 33,
|
||||||
|
Self::OPT => 41,
|
||||||
|
Self::CAA => 257,
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -25,9 +37,15 @@ impl QueryType {
|
||||||
1 => Self::A,
|
1 => Self::A,
|
||||||
2 => Self::NS,
|
2 => Self::NS,
|
||||||
5 => Self::CNAME,
|
5 => Self::CNAME,
|
||||||
|
6 => Self::SOA,
|
||||||
|
12 => Self::PTR,
|
||||||
15 => Self::MX,
|
15 => Self::MX,
|
||||||
|
16 => Self::TXT,
|
||||||
28 => Self::AAAA,
|
28 => Self::AAAA,
|
||||||
|
33 => Self::SRV,
|
||||||
|
41 => Self::OPT,
|
||||||
|
257 => Self::CAA,
|
||||||
_ => Self::UNKNOWN(num),
|
_ => Self::UNKNOWN(num),
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
@ -1,6 +1,6 @@
|
||||||
use super::{buffer::PacketBuffer, query::QueryType, Result};
|
use super::{buffer::PacketBuffer, query::QueryType, Result};
|
||||||
|
|
||||||
#[derive(Debug, Clone, PartialEq, Eq)]
|
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
|
||||||
pub struct DnsQuestion {
|
pub struct DnsQuestion {
|
||||||
pub name: String,
|
pub name: String,
|
||||||
pub qtype: QueryType,
|
pub qtype: QueryType,
|
||||||
|
|
@ -28,4 +28,4 @@ impl DnsQuestion {
|
||||||
|
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
498
src/packet/record.rs
Normal file
498
src/packet/record.rs
Normal file
|
|
@ -0,0 +1,498 @@
|
||||||
|
use std::net::{Ipv4Addr, Ipv6Addr};
|
||||||
|
|
||||||
|
use tracing::{trace, warn};
|
||||||
|
|
||||||
|
use super::{buffer::PacketBuffer, query::QueryType, Result};
|
||||||
|
|
||||||
|
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
|
||||||
|
#[allow(dead_code)]
|
||||||
|
pub enum DnsRecord {
|
||||||
|
UNKNOWN {
|
||||||
|
domain: String,
|
||||||
|
qtype: u16,
|
||||||
|
data_len: u16,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 0
|
||||||
|
A {
|
||||||
|
domain: String,
|
||||||
|
addr: Ipv4Addr,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 1
|
||||||
|
NS {
|
||||||
|
domain: String,
|
||||||
|
host: String,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 2
|
||||||
|
CNAME {
|
||||||
|
domain: String,
|
||||||
|
host: String,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 5
|
||||||
|
SOA {
|
||||||
|
domain: String,
|
||||||
|
mname: String,
|
||||||
|
nname: String,
|
||||||
|
serial: u32,
|
||||||
|
refresh: u32,
|
||||||
|
retry: u32,
|
||||||
|
expire: u32,
|
||||||
|
minimum: u32,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 6
|
||||||
|
PTR {
|
||||||
|
domain: String,
|
||||||
|
pointer: String,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 12
|
||||||
|
MX {
|
||||||
|
domain: String,
|
||||||
|
priority: u16,
|
||||||
|
host: String,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 15
|
||||||
|
TXT {
|
||||||
|
domain: String,
|
||||||
|
text: Vec<String>,
|
||||||
|
ttl: u32,
|
||||||
|
}, //16
|
||||||
|
AAAA {
|
||||||
|
domain: String,
|
||||||
|
addr: Ipv6Addr,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 28
|
||||||
|
SRV {
|
||||||
|
domain: String,
|
||||||
|
priority: u16,
|
||||||
|
weight: u16,
|
||||||
|
port: u16,
|
||||||
|
target: String,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 33
|
||||||
|
CAA {
|
||||||
|
domain: String,
|
||||||
|
flags: u8,
|
||||||
|
length: u8,
|
||||||
|
tag: String,
|
||||||
|
value: String,
|
||||||
|
ttl: u32,
|
||||||
|
}, // 257
|
||||||
|
}
|
||||||
|
|
||||||
|
impl DnsRecord {
|
||||||
|
|
||||||
|
pub fn read(buffer: &mut PacketBuffer) -> Result<Self> {
|
||||||
|
let mut domain = String::new();
|
||||||
|
buffer.read_qname(&mut domain)?;
|
||||||
|
|
||||||
|
let qtype_num = buffer.read_u16()?;
|
||||||
|
let qtype = QueryType::from_num(qtype_num);
|
||||||
|
let _ = buffer.read_u16()?;
|
||||||
|
let ttl = buffer.read_u32()?;
|
||||||
|
let data_len = buffer.read_u16()?;
|
||||||
|
|
||||||
|
let header_pos = buffer.pos();
|
||||||
|
|
||||||
|
trace!("Reading DNS Record TYPE: {:?}", qtype);
|
||||||
|
|
||||||
|
match qtype {
|
||||||
|
QueryType::A => {
|
||||||
|
let raw_addr = buffer.read_u32()?;
|
||||||
|
let addr = Ipv4Addr::new(
|
||||||
|
((raw_addr >> 24) & 0xFF) as u8,
|
||||||
|
((raw_addr >> 16) & 0xFF) as u8,
|
||||||
|
((raw_addr >> 8) & 0xFF) as u8,
|
||||||
|
(raw_addr & 0xFF) as u8,
|
||||||
|
);
|
||||||
|
|
||||||
|
Ok(Self::A { domain, addr, ttl })
|
||||||
|
}
|
||||||
|
QueryType::AAAA => {
|
||||||
|
let raw_addr1 = buffer.read_u32()?;
|
||||||
|
let raw_addr2 = buffer.read_u32()?;
|
||||||
|
let raw_addr3 = buffer.read_u32()?;
|
||||||
|
let raw_addr4 = buffer.read_u32()?;
|
||||||
|
let addr = Ipv6Addr::new(
|
||||||
|
((raw_addr1 >> 16) & 0xFFFF) as u16,
|
||||||
|
(raw_addr1 & 0xFFFF) as u16,
|
||||||
|
((raw_addr2 >> 16) & 0xFFFF) as u16,
|
||||||
|
(raw_addr2 & 0xFFFF) as u16,
|
||||||
|
((raw_addr3 >> 16) & 0xFFFF) as u16,
|
||||||
|
(raw_addr3 & 0xFFFF) as u16,
|
||||||
|
((raw_addr4 >> 16) & 0xFFFF) as u16,
|
||||||
|
(raw_addr4 & 0xFFFF) as u16,
|
||||||
|
);
|
||||||
|
|
||||||
|
Ok(Self::AAAA { domain, addr, ttl })
|
||||||
|
}
|
||||||
|
QueryType::NS => {
|
||||||
|
let mut ns = String::new();
|
||||||
|
buffer.read_qname(&mut ns)?;
|
||||||
|
|
||||||
|
Ok(Self::NS {
|
||||||
|
domain,
|
||||||
|
host: ns,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
QueryType::CNAME => {
|
||||||
|
let mut cname = String::new();
|
||||||
|
buffer.read_qname(&mut cname)?;
|
||||||
|
|
||||||
|
Ok(Self::CNAME {
|
||||||
|
domain,
|
||||||
|
host: cname,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
QueryType::SOA => {
|
||||||
|
let mut mname = String::new();
|
||||||
|
buffer.read_qname(&mut mname)?;
|
||||||
|
|
||||||
|
let mut nname = String::new();
|
||||||
|
buffer.read_qname(&mut nname)?;
|
||||||
|
|
||||||
|
let serial = buffer.read_u32()?;
|
||||||
|
let refresh = buffer.read_u32()?;
|
||||||
|
let retry = buffer.read_u32()?;
|
||||||
|
let expire = buffer.read_u32()?;
|
||||||
|
let minimum = buffer.read_u32()?;
|
||||||
|
|
||||||
|
Ok(Self::SOA {
|
||||||
|
domain,
|
||||||
|
mname,
|
||||||
|
nname,
|
||||||
|
serial,
|
||||||
|
refresh,
|
||||||
|
retry,
|
||||||
|
expire,
|
||||||
|
minimum,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
QueryType::PTR => {
|
||||||
|
let mut pointer = String::new();
|
||||||
|
buffer.read_qname(&mut pointer)?;
|
||||||
|
|
||||||
|
Ok(Self::PTR {
|
||||||
|
domain,
|
||||||
|
pointer,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
QueryType::MX => {
|
||||||
|
let priority = buffer.read_u16()?;
|
||||||
|
let mut mx = String::new();
|
||||||
|
buffer.read_qname(&mut mx)?;
|
||||||
|
|
||||||
|
Ok(Self::MX {
|
||||||
|
domain,
|
||||||
|
priority,
|
||||||
|
host: mx,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
QueryType::TXT => {
|
||||||
|
let mut text = Vec::new();
|
||||||
|
|
||||||
|
loop {
|
||||||
|
let mut s = String::new();
|
||||||
|
buffer.read_string(&mut s)?;
|
||||||
|
|
||||||
|
if s.len() == 0 {
|
||||||
|
break;
|
||||||
|
} else {
|
||||||
|
text.push(s);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(Self::TXT { domain, text, ttl })
|
||||||
|
}
|
||||||
|
QueryType::SRV => {
|
||||||
|
let priority = buffer.read_u16()?;
|
||||||
|
let weight = buffer.read_u16()?;
|
||||||
|
let port = buffer.read_u16()?;
|
||||||
|
|
||||||
|
let mut target = String::new();
|
||||||
|
buffer.read_qname(&mut target)?;
|
||||||
|
|
||||||
|
Ok(Self::SRV {
|
||||||
|
domain,
|
||||||
|
priority,
|
||||||
|
weight,
|
||||||
|
port,
|
||||||
|
target,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
QueryType::CAA => {
|
||||||
|
let flags = buffer.read()?;
|
||||||
|
let length = buffer.read()?;
|
||||||
|
|
||||||
|
let mut tag = String::new();
|
||||||
|
buffer.read_string_n(&mut tag, length)?;
|
||||||
|
|
||||||
|
let value_len = (data_len as usize) + header_pos - buffer.pos;
|
||||||
|
let mut value = String::new();
|
||||||
|
buffer.read_string_n(&mut value, value_len as u8)?;
|
||||||
|
|
||||||
|
Ok(Self::CAA {
|
||||||
|
domain,
|
||||||
|
flags,
|
||||||
|
length,
|
||||||
|
tag,
|
||||||
|
value,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
QueryType::UNKNOWN(_) | _ => {
|
||||||
|
buffer.step(data_len as usize)?;
|
||||||
|
|
||||||
|
Ok(Self::UNKNOWN {
|
||||||
|
domain,
|
||||||
|
qtype: qtype_num,
|
||||||
|
data_len,
|
||||||
|
ttl,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn write(&self, buffer: &mut PacketBuffer) -> Result<usize> {
|
||||||
|
let start_pos = buffer.pos();
|
||||||
|
|
||||||
|
trace!("Writing DNS Record {:?}", self);
|
||||||
|
|
||||||
|
match *self {
|
||||||
|
Self::A {
|
||||||
|
ref domain,
|
||||||
|
ref addr,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::A.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
buffer.write_u16(4)?;
|
||||||
|
|
||||||
|
let octets = addr.octets();
|
||||||
|
buffer.write_u8(octets[0])?;
|
||||||
|
buffer.write_u8(octets[1])?;
|
||||||
|
buffer.write_u8(octets[2])?;
|
||||||
|
buffer.write_u8(octets[3])?;
|
||||||
|
}
|
||||||
|
Self::NS {
|
||||||
|
ref domain,
|
||||||
|
ref host,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::NS.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
buffer.write_qname(host)?;
|
||||||
|
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::CNAME {
|
||||||
|
ref domain,
|
||||||
|
ref host,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::CNAME.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
buffer.write_qname(host)?;
|
||||||
|
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::SOA {
|
||||||
|
ref domain,
|
||||||
|
ref mname,
|
||||||
|
ref nname,
|
||||||
|
serial,
|
||||||
|
refresh,
|
||||||
|
retry,
|
||||||
|
expire,
|
||||||
|
minimum,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::SOA.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
buffer.write_qname(mname)?;
|
||||||
|
buffer.write_qname(nname)?;
|
||||||
|
buffer.write_u32(serial)?;
|
||||||
|
buffer.write_u32(refresh)?;
|
||||||
|
buffer.write_u32(retry)?;
|
||||||
|
buffer.write_u32(expire)?;
|
||||||
|
buffer.write_u32(minimum)?;
|
||||||
|
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::PTR {
|
||||||
|
ref domain,
|
||||||
|
ref pointer,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::NS.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
buffer.write_qname(&pointer)?;
|
||||||
|
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::MX {
|
||||||
|
ref domain,
|
||||||
|
priority,
|
||||||
|
ref host,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::MX.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
buffer.write_u16(priority)?;
|
||||||
|
buffer.write_qname(host)?;
|
||||||
|
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::TXT {
|
||||||
|
ref domain,
|
||||||
|
ref text,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(&domain)?;
|
||||||
|
buffer.write_u16(QueryType::TXT.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
if text.is_empty() {
|
||||||
|
return Ok(buffer.pos() - start_pos);
|
||||||
|
}
|
||||||
|
|
||||||
|
for s in text {
|
||||||
|
buffer.write_u8(s.len() as u8)?;
|
||||||
|
buffer.write_string(&s)?;
|
||||||
|
}
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::AAAA {
|
||||||
|
ref domain,
|
||||||
|
ref addr,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::AAAA.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
buffer.write_u16(16)?;
|
||||||
|
|
||||||
|
for octet in &addr.segments() {
|
||||||
|
buffer.write_u16(*octet)?;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
Self::SRV {
|
||||||
|
ref domain,
|
||||||
|
priority,
|
||||||
|
weight,
|
||||||
|
port,
|
||||||
|
ref target,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::SRV.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
buffer.write_u16(priority)?;
|
||||||
|
buffer.write_u16(weight)?;
|
||||||
|
buffer.write_u16(port)?;
|
||||||
|
buffer.write_qname(target)?;
|
||||||
|
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::CAA {
|
||||||
|
ref domain,
|
||||||
|
flags,
|
||||||
|
length,
|
||||||
|
ref tag,
|
||||||
|
ref value,
|
||||||
|
ttl,
|
||||||
|
} => {
|
||||||
|
buffer.write_qname(domain)?;
|
||||||
|
buffer.write_u16(QueryType::CAA.to_num())?;
|
||||||
|
buffer.write_u16(1)?;
|
||||||
|
buffer.write_u32(ttl)?;
|
||||||
|
|
||||||
|
let pos = buffer.pos();
|
||||||
|
buffer.write_u16(0)?;
|
||||||
|
|
||||||
|
buffer.write_u8(flags)?;
|
||||||
|
buffer.write_u8(length)?;
|
||||||
|
buffer.write_string(tag)?;
|
||||||
|
buffer.write_string(value)?;
|
||||||
|
|
||||||
|
let size = buffer.pos() - (pos + 2);
|
||||||
|
buffer.set_u16(pos, size as u16)?;
|
||||||
|
}
|
||||||
|
Self::UNKNOWN { .. } => {
|
||||||
|
warn!("Skipping record: {self:?}");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(buffer.pos() - start_pos)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn get_ttl(&self) -> u32 {
|
||||||
|
match *self {
|
||||||
|
DnsRecord::UNKNOWN { .. } => 0,
|
||||||
|
DnsRecord::AAAA { ttl, .. } => ttl,
|
||||||
|
DnsRecord::A { ttl, .. } => ttl,
|
||||||
|
DnsRecord::NS { ttl, .. } => ttl,
|
||||||
|
DnsRecord::CNAME { ttl, .. } => ttl,
|
||||||
|
DnsRecord::SOA { ttl, .. } => ttl,
|
||||||
|
DnsRecord::PTR { ttl, .. } => ttl,
|
||||||
|
DnsRecord::MX { ttl, .. } => ttl,
|
||||||
|
DnsRecord::TXT { ttl, .. } => ttl,
|
||||||
|
DnsRecord::SRV { ttl, .. } => ttl,
|
||||||
|
DnsRecord::CAA { ttl, .. } => ttl,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
@ -19,4 +19,4 @@ impl ResultCode {
|
||||||
0 | _ => Self::NOERROR,
|
0 | _ => Self::NOERROR,
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
150
src/server/binding.rs
Normal file
150
src/server/binding.rs
Normal file
|
|
@ -0,0 +1,150 @@
|
||||||
|
use std::{
|
||||||
|
net::{IpAddr, SocketAddr},
|
||||||
|
sync::Arc,
|
||||||
|
};
|
||||||
|
|
||||||
|
use crate::packet::{buffer::PacketBuffer, Packet, Result};
|
||||||
|
use tokio::{
|
||||||
|
io::{AsyncReadExt, AsyncWriteExt},
|
||||||
|
net::{TcpListener, TcpStream, UdpSocket},
|
||||||
|
};
|
||||||
|
use tracing::trace;
|
||||||
|
|
||||||
|
pub enum Binding {
|
||||||
|
UDP(Arc<UdpSocket>),
|
||||||
|
TCP(TcpListener),
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Binding {
|
||||||
|
pub async fn udp(addr: SocketAddr) -> Result<Self> {
|
||||||
|
let socket = UdpSocket::bind(addr).await?;
|
||||||
|
Ok(Self::UDP(Arc::new(socket)))
|
||||||
|
}
|
||||||
|
|
||||||
|
pub async fn tcp(addr: SocketAddr) -> Result<Self> {
|
||||||
|
let socket = TcpListener::bind(addr).await?;
|
||||||
|
Ok(Self::TCP(socket))
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn name(&self) -> &str {
|
||||||
|
match self {
|
||||||
|
Binding::UDP(_) => "UDP",
|
||||||
|
Binding::TCP(_) => "TCP",
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub async fn connect(&mut self) -> Result<Connection> {
|
||||||
|
match self {
|
||||||
|
Self::UDP(socket) => {
|
||||||
|
let mut buf = [0; 512];
|
||||||
|
let (_, addr) = socket.recv_from(&mut buf).await?;
|
||||||
|
Ok(Connection::UDP(socket.clone(), addr, buf))
|
||||||
|
}
|
||||||
|
Self::TCP(socket) => {
|
||||||
|
let (stream, _) = socket.accept().await?;
|
||||||
|
Ok(Connection::TCP(stream))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub enum Connection {
|
||||||
|
UDP(Arc<UdpSocket>, SocketAddr, [u8; 512]),
|
||||||
|
TCP(TcpStream),
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Connection {
|
||||||
|
pub async fn read_packet(&mut self) -> Result<Packet> {
|
||||||
|
let data = self.read().await?;
|
||||||
|
let mut packet_buffer = PacketBuffer::new(data);
|
||||||
|
|
||||||
|
let packet = Packet::from_buffer(&mut packet_buffer)?;
|
||||||
|
Ok(packet)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub async fn write_packet(self, mut packet: Packet) -> Result<()> {
|
||||||
|
let mut packet_buffer = PacketBuffer::new(Vec::new());
|
||||||
|
packet.write(&mut packet_buffer)?;
|
||||||
|
|
||||||
|
self.write(packet_buffer.buf).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
pub async fn request_packet(&self, mut packet: Packet, dest: (IpAddr, u16)) -> Result<Packet> {
|
||||||
|
let mut packet_buffer = PacketBuffer::new(Vec::new());
|
||||||
|
packet.write(&mut packet_buffer)?;
|
||||||
|
|
||||||
|
let data = self.request(packet_buffer.buf, dest).await?;
|
||||||
|
let mut packet_buffer = PacketBuffer::new(data);
|
||||||
|
|
||||||
|
let packet = Packet::from_buffer(&mut packet_buffer)?;
|
||||||
|
Ok(packet)
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn read(&mut self) -> Result<Vec<u8>> {
|
||||||
|
trace!("Reading DNS packet");
|
||||||
|
match self {
|
||||||
|
Self::UDP(_, _, src) => Ok(Vec::from(*src)),
|
||||||
|
Self::TCP(stream) => {
|
||||||
|
let size = stream.read_u16().await?;
|
||||||
|
let mut buf = Vec::with_capacity(size as usize);
|
||||||
|
stream.read_buf(&mut buf).await?;
|
||||||
|
Ok(buf)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn write(self, mut buf: Vec<u8>) -> Result<()> {
|
||||||
|
trace!("Returning DNS packet");
|
||||||
|
match self {
|
||||||
|
Self::UDP(socket, addr, _) => {
|
||||||
|
if buf.len() > 512 {
|
||||||
|
buf[2] = buf[2] | 0x03;
|
||||||
|
socket.send_to(&buf[0..512], addr).await?;
|
||||||
|
} else {
|
||||||
|
socket.send_to(&buf, addr).await?;
|
||||||
|
}
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
Self::TCP(mut stream) => {
|
||||||
|
stream.write_u16(buf.len() as u16).await?;
|
||||||
|
stream.write(&buf[0..buf.len()]).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn request(&self, buf: Vec<u8>, dest: (IpAddr, u16)) -> Result<Vec<u8>> {
|
||||||
|
match self {
|
||||||
|
Self::UDP(_socket, _addr, _src) => {
|
||||||
|
let local_addr = "[::]:0".parse::<SocketAddr>()?;
|
||||||
|
let socket = UdpSocket::bind(local_addr).await?;
|
||||||
|
socket.send_to(&buf, dest).await?;
|
||||||
|
|
||||||
|
let mut buf = [0; 512];
|
||||||
|
socket.recv_from(&mut buf).await?;
|
||||||
|
|
||||||
|
Ok(Vec::from(buf))
|
||||||
|
}
|
||||||
|
Self::TCP(_stream) => {
|
||||||
|
let mut stream = TcpStream::connect(dest).await?;
|
||||||
|
stream.write_u16((buf.len()) as u16).await?;
|
||||||
|
stream.write_all(&buf[0..buf.len()]).await?;
|
||||||
|
|
||||||
|
stream.readable().await?;
|
||||||
|
let size = stream.read_u16().await?;
|
||||||
|
let mut buf = Vec::with_capacity(size as usize);
|
||||||
|
stream.read_buf(&mut buf).await?;
|
||||||
|
|
||||||
|
Ok(buf)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// fn pb(buf: &[u8]) {
|
||||||
|
// for i in 0..buf.len() {
|
||||||
|
// print!("{:02X?} ", buf[i]);
|
||||||
|
// }
|
||||||
|
// println!("");
|
||||||
|
// }
|
||||||
|
}
|
||||||
3
src/server/mod.rs
Normal file
3
src/server/mod.rs
Normal file
|
|
@ -0,0 +1,3 @@
|
||||||
|
mod binding;
|
||||||
|
mod resolver;
|
||||||
|
pub mod server;
|
||||||
165
src/server/resolver.rs
Normal file
165
src/server/resolver.rs
Normal file
|
|
@ -0,0 +1,165 @@
|
||||||
|
use super::binding::Connection;
|
||||||
|
use crate::{
|
||||||
|
config::Config,
|
||||||
|
packet::{
|
||||||
|
query::QueryType, question::DnsQuestion, result::ResultCode, Packet,
|
||||||
|
Result,
|
||||||
|
}, get_time,
|
||||||
|
};
|
||||||
|
use async_recursion::async_recursion;
|
||||||
|
use moka::future::Cache;
|
||||||
|
use std::{net::IpAddr, sync::Arc, time::Duration};
|
||||||
|
use tracing::{error, trace};
|
||||||
|
|
||||||
|
pub struct Resolver {
|
||||||
|
request_id: u16,
|
||||||
|
connection: Connection,
|
||||||
|
config: Arc<Config>,
|
||||||
|
cache: Cache<DnsQuestion, (Packet, u64)>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Resolver {
|
||||||
|
pub fn new(
|
||||||
|
request_id: u16,
|
||||||
|
connection: Connection,
|
||||||
|
config: Arc<Config>,
|
||||||
|
cache: Cache<DnsQuestion, (Packet, u64)>,
|
||||||
|
) -> Self {
|
||||||
|
Self {
|
||||||
|
request_id,
|
||||||
|
connection,
|
||||||
|
config,
|
||||||
|
cache,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn lookup_cache(&mut self, qname: &str, qtype: QueryType) -> Option<Packet> {
|
||||||
|
let question = DnsQuestion::new(qname.to_string(), qtype);
|
||||||
|
let Some((packet, date)) = self.cache.get(&question) else {
|
||||||
|
return None
|
||||||
|
};
|
||||||
|
|
||||||
|
let now = get_time();
|
||||||
|
let diff = Duration::from_millis(now - date).as_secs() as u32;
|
||||||
|
|
||||||
|
for answer in &packet.answers {
|
||||||
|
let ttl = answer.get_ttl();
|
||||||
|
if diff > ttl {
|
||||||
|
self.cache.invalidate(&question).await;
|
||||||
|
return None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
trace!("Found cached value for {qtype:?} {qname}");
|
||||||
|
|
||||||
|
Some(packet)
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn lookup(&mut self, qname: &str, qtype: QueryType, server: (IpAddr, u16)) -> Packet {
|
||||||
|
let mut packet = Packet::new();
|
||||||
|
|
||||||
|
packet.header.id = self.request_id;
|
||||||
|
packet.header.questions = 1;
|
||||||
|
packet.header.recursion_desired = true;
|
||||||
|
packet
|
||||||
|
.questions
|
||||||
|
.push(DnsQuestion::new(qname.to_string(), qtype));
|
||||||
|
|
||||||
|
let packet = match self.connection.request_packet(packet, server).await {
|
||||||
|
Ok(packet) => packet,
|
||||||
|
Err(e) => {
|
||||||
|
error!("Failed to complete nameserver request: {e}");
|
||||||
|
let mut packet = Packet::new();
|
||||||
|
packet.header.rescode = ResultCode::SERVFAIL;
|
||||||
|
packet
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
packet
|
||||||
|
}
|
||||||
|
|
||||||
|
#[async_recursion]
|
||||||
|
async fn recursive_lookup(&mut self, qname: &str, qtype: QueryType) -> Packet {
|
||||||
|
let question = DnsQuestion::new(qname.to_string(), qtype);
|
||||||
|
let mut ns = self.config.get_fallback_ns().clone();
|
||||||
|
|
||||||
|
if let Some(packet) = self.lookup_cache(qname, qtype).await { return packet }
|
||||||
|
|
||||||
|
loop {
|
||||||
|
trace!("Attempting lookup of {qtype:?} {qname} with ns {ns}");
|
||||||
|
|
||||||
|
let ns_copy = ns;
|
||||||
|
|
||||||
|
let server = (ns_copy, 53);
|
||||||
|
let response = self.lookup(qname, qtype, server).await;
|
||||||
|
|
||||||
|
if !response.answers.is_empty() && response.header.rescode == ResultCode::NOERROR {
|
||||||
|
self.cache.insert(question, (response.clone(), get_time())).await;
|
||||||
|
return response;
|
||||||
|
}
|
||||||
|
|
||||||
|
if response.header.rescode == ResultCode::NXDOMAIN {
|
||||||
|
self.cache.insert(question, (response.clone(), get_time())).await;
|
||||||
|
return response;
|
||||||
|
}
|
||||||
|
|
||||||
|
if let Some(new_ns) = response.get_resolved_ns(qname) {
|
||||||
|
ns = new_ns;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
let new_ns_name = match response.get_unresolved_ns(qname) {
|
||||||
|
Some(x) => x,
|
||||||
|
None => {
|
||||||
|
self.cache.insert(question, (response.clone(), get_time())).await;
|
||||||
|
return response
|
||||||
|
},
|
||||||
|
};
|
||||||
|
|
||||||
|
let recursive_response = self.recursive_lookup(new_ns_name, QueryType::A).await;
|
||||||
|
|
||||||
|
if let Some(new_ns) = recursive_response.get_random_a() {
|
||||||
|
ns = new_ns;
|
||||||
|
} else {
|
||||||
|
self.cache.insert(question, (response.clone(), get_time())).await;
|
||||||
|
return response;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub async fn handle_query(mut self) -> Result<()> {
|
||||||
|
let mut request = self.connection.read_packet().await?;
|
||||||
|
|
||||||
|
let mut packet = Packet::new();
|
||||||
|
packet.header.id = request.header.id;
|
||||||
|
packet.header.recursion_desired = true;
|
||||||
|
packet.header.recursion_available = true;
|
||||||
|
packet.header.response = true;
|
||||||
|
|
||||||
|
if let Some(question) = request.questions.pop() {
|
||||||
|
trace!("Received query: {question:?}");
|
||||||
|
|
||||||
|
let result = self.recursive_lookup(&question.name, question.qtype).await;
|
||||||
|
packet.questions.push(question.clone());
|
||||||
|
packet.header.rescode = result.header.rescode;
|
||||||
|
|
||||||
|
for rec in result.answers {
|
||||||
|
trace!("Answer: {rec:?}");
|
||||||
|
packet.answers.push(rec);
|
||||||
|
}
|
||||||
|
for rec in result.authorities {
|
||||||
|
trace!("Authority: {rec:?}");
|
||||||
|
packet.authorities.push(rec);
|
||||||
|
}
|
||||||
|
for rec in result.resources {
|
||||||
|
trace!("Resource: {rec:?}");
|
||||||
|
packet.resources.push(rec);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
packet.header.rescode = ResultCode::FORMERR;
|
||||||
|
}
|
||||||
|
|
||||||
|
self.connection.write_packet(packet).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
}
|
||||||
73
src/server/server.rs
Normal file
73
src/server/server.rs
Normal file
|
|
@ -0,0 +1,73 @@
|
||||||
|
use moka::future::Cache;
|
||||||
|
use std::net::SocketAddr;
|
||||||
|
use std::sync::Arc;
|
||||||
|
use std::time::Duration;
|
||||||
|
use tokio::task::JoinHandle;
|
||||||
|
use tracing::{error, info};
|
||||||
|
|
||||||
|
use crate::config::Config;
|
||||||
|
use crate::packet::question::DnsQuestion;
|
||||||
|
use crate::packet::{Result, Packet};
|
||||||
|
|
||||||
|
use super::binding::Binding;
|
||||||
|
use super::resolver::Resolver;
|
||||||
|
|
||||||
|
pub struct Server {
|
||||||
|
addr: SocketAddr,
|
||||||
|
config: Arc<Config>,
|
||||||
|
cache: Cache<DnsQuestion, (Packet, u64)>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Server {
|
||||||
|
pub async fn new(config: Config) -> Result<Self> {
|
||||||
|
let addr = format!("[::]:{}", config.get_port()).parse::<SocketAddr>()?;
|
||||||
|
let cache = Cache::builder()
|
||||||
|
.time_to_live(Duration::from_secs(60 * 60))
|
||||||
|
.max_capacity(1_000)
|
||||||
|
.build();
|
||||||
|
Ok(Self {
|
||||||
|
addr,
|
||||||
|
config: Arc::new(config),
|
||||||
|
cache,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
|
||||||
|
pub async fn run(&self) -> Result<()> {
|
||||||
|
let tcp = Binding::tcp(self.addr).await?;
|
||||||
|
let tcp_handle = self.listen(tcp);
|
||||||
|
|
||||||
|
let udp = Binding::udp(self.addr).await?;
|
||||||
|
let udp_handle = self.listen(udp);
|
||||||
|
|
||||||
|
info!("Fallback DNS Server is set to: {:?}", self.config.get_fallback_ns());
|
||||||
|
info!("Listening for TCP and UDP traffic on [::]:{}", self.config.get_port());
|
||||||
|
|
||||||
|
tokio::join!(tcp_handle)
|
||||||
|
.0
|
||||||
|
.expect("Failed to join tcp thread");
|
||||||
|
tokio::join!(udp_handle)
|
||||||
|
.0
|
||||||
|
.expect("Failed to join udp thread");
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn listen(&self, mut binding: Binding) -> JoinHandle<()> {
|
||||||
|
let config = self.config.clone();
|
||||||
|
let cache = self.cache.clone();
|
||||||
|
tokio::spawn(async move {
|
||||||
|
let mut id = 0;
|
||||||
|
loop {
|
||||||
|
let Ok(connection) = binding.connect().await else { continue };
|
||||||
|
info!("Received request on {}", binding.name());
|
||||||
|
|
||||||
|
let resolver = Resolver::new(id, connection, config.clone(), cache.clone());
|
||||||
|
|
||||||
|
if let Err(err) = resolver.handle_query().await {
|
||||||
|
error!("{} request {} failed: {:?}", binding.name(), id, err);
|
||||||
|
};
|
||||||
|
|
||||||
|
id += 1;
|
||||||
|
}
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue