Automatically manage firewall rules (iptables) for services #1
4 changed files with 169 additions and 212 deletions
238
Cargo.lock
generated
238
Cargo.lock
generated
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@ -1,5 +1,14 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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[[package]]
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name = "aho-corasick"
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version = "0.6.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "81ce3d38065e618af2d7b77e10c5ad9a069859b4be3c2250f674af3840d9c8a5"
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dependencies = [
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"memchr",
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]
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[[package]]
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name = "aho-corasick"
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version = "0.7.10"
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@ -49,6 +58,12 @@ version = "0.11.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b41b7ea54a0c9d92199de89e20e58d49f02f8e699814ef3fdf266f6f748d15c7"
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[[package]]
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name = "bitflags"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8dead7461c1127cf637931a1e50934eb6eee8bff2f74433ac7909e9afcee04a3"
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[[package]]
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name = "bitflags"
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version = "1.2.1"
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@ -127,11 +142,10 @@ dependencies = [
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"anyhow",
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"futures",
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"igd",
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"libc",
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"iptables",
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"log",
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"mnl",
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"nftnl",
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"pretty_env_logger",
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"regex 1.3.7",
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"reqwest",
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"serde",
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"serde-lexpr",
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@ -163,24 +177,10 @@ dependencies = [
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"atty",
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"humantime",
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"log",
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"regex",
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"regex 1.3.7",
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"termcolor",
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]
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[[package]]
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name = "err-derive"
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version = "0.2.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "22deed3a8124cff5fa835713fa105621e43bbdc46690c3a6b68328a012d350d4"
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dependencies = [
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"proc-macro-error",
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"proc-macro2",
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"quote",
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"rustversion",
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"syn",
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"synstructure",
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]
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[[package]]
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name = "fnv"
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version = "1.0.6"
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@ -214,7 +214,7 @@ version = "0.3.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
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dependencies = [
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"bitflags",
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"bitflags 1.2.1",
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"fuchsia-zircon-sys",
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]
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@ -509,6 +509,17 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "iptables"
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version = "0.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f7910549cb022e3112eea631a4c3e62523281b6c61024b2c3a8d61da620010de"
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dependencies = [
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"lazy_static 0.2.11",
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"nix",
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"regex 0.2.11",
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]
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[[package]]
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name = "itoa"
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version = "0.4.5"
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@ -534,6 +545,12 @@ dependencies = [
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"winapi-build",
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]
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[[package]]
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name = "lazy_static"
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version = "0.2.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
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[[package]]
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name = "lazy_static"
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version = "1.4.0"
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@ -637,34 +654,13 @@ dependencies = [
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"ws2_32-sys",
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]
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[[package]]
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name = "mnl"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e6efb50a48dbacd112e7e847b9847fa530ec4a473ba6322a2f82c42ef333e226"
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dependencies = [
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"libc",
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"log",
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"mnl-sys",
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]
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[[package]]
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name = "mnl-sys"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5302035599c722b3a5b92a6502ff73c501dc6d100c53b89f0fae0cb932a37122"
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dependencies = [
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"libc",
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"pkg-config",
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]
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[[package]]
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name = "native-tls"
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version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4b2df1a4c22fd44a62147fd8f13dd0f95c9d8ca7b2610299b2a2f9cf8964274e"
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dependencies = [
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"lazy_static",
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"lazy_static 1.4.0",
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"libc",
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"log",
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"openssl",
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@ -688,27 +684,17 @@ dependencies = [
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]
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[[package]]
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name = "nftnl"
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version = "0.3.0"
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name = "nix"
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version = "0.7.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f3727d1e8c1c9af88857f46539c3030693158a2a7586056b8cab6ded523bf7aa"
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dependencies = [
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"bitflags",
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"err-derive",
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"libc",
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"log",
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"nftnl-sys",
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]
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[[package]]
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name = "nftnl-sys"
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version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "dba134c9b125b7d7c13d813388aaeb2aeeba60fb1eb702799163fb845086ca33"
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checksum = "a0d95c5fa8b641c10ad0b8887454ebaafa3c92b5cd5350f8fc693adafd178e7b"
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dependencies = [
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"bitflags 0.4.0",
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"cfg-if",
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"libc",
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"pkg-config",
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"rustc_version",
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"semver",
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"void",
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]
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[[package]]
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@ -733,10 +719,10 @@ version = "0.10.28"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "973293749822d7dd6370d6da1e523b0d1db19f06c459134c658b2a4261378b52"
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dependencies = [
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"bitflags",
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"bitflags 1.2.1",
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"cfg-if",
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"foreign-types",
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"lazy_static",
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"lazy_static 1.4.0",
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"libc",
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"openssl-sys",
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]
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@ -826,32 +812,6 @@ dependencies = [
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"log",
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]
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[[package]]
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name = "proc-macro-error"
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version = "1.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "98e9e4b82e0ef281812565ea4751049f1bdcdfccda7d3f459f2e138a40c08678"
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dependencies = [
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"proc-macro-error-attr",
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"proc-macro2",
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"quote",
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"syn",
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"version_check 0.9.1",
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]
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[[package]]
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name = "proc-macro-error-attr"
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version = "1.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4f5444ead4e9935abd7f27dc51f7e852a0569ac888096d5ec2499470794e2e53"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"syn-mid",
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"version_check 0.9.1",
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]
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[[package]]
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name = "proc-macro-hack"
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version = "0.5.11"
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@ -977,16 +937,38 @@ version = "0.1.56"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
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[[package]]
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name = "regex"
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version = "0.2.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9329abc99e39129fcceabd24cf5d85b4671ef7c29c50e972bc5afe32438ec384"
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dependencies = [
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"aho-corasick 0.6.10",
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"memchr",
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"regex-syntax 0.5.6",
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"thread_local 0.3.6",
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"utf8-ranges",
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]
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[[package]]
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name = "regex"
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version = "1.3.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a6020f034922e3194c711b82a627453881bc4682166cabb07134a10c26ba7692"
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dependencies = [
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"aho-corasick",
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"aho-corasick 0.7.10",
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"memchr",
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"regex-syntax",
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"thread_local",
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"regex-syntax 0.6.17",
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"thread_local 1.0.1",
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]
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[[package]]
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name = "regex-syntax"
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version = "0.5.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7d707a4fa2637f2dca2ef9fd02225ec7661fe01a53623c1e6515b6916511f7a7"
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dependencies = [
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"ucd-util",
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]
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[[package]]
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@ -1020,7 +1002,7 @@ dependencies = [
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"hyper",
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"hyper-tls",
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"js-sys",
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"lazy_static",
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"lazy_static 1.4.0",
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"log",
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"mime",
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"mime_guess",
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@ -1041,14 +1023,12 @@ dependencies = [
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]
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[[package]]
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name = "rustversion"
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version = "1.0.2"
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name = "rustc_version"
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version = "0.1.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b3bba175698996010c4f6dce5e7f173b6eb781fce25d2cfc45e27091ce0b79f6"
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checksum = "c5f5376ea5e30ce23c03eb77cbe4962b988deead10910c372b226388b594c084"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"semver",
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]
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[[package]]
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@ -1063,7 +1043,7 @@ version = "0.1.17"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "507a9e6e8ffe0a4e0ebb9a10293e62fdf7657c06f1b8bb07a8fcf697d2abf295"
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dependencies = [
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"lazy_static",
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"lazy_static 1.4.0",
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"winapi 0.3.8",
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]
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@ -1088,6 +1068,12 @@ dependencies = [
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"core-foundation-sys",
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]
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[[package]]
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name = "semver"
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version = "0.1.20"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d4f410fedcf71af0345d7607d246e7ad15faaadd49d240ee3b24e5dc21a820ac"
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[[package]]
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name = "serde"
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version = "1.0.107"
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@ -1170,29 +1156,6 @@ dependencies = [
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"unicode-xid",
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]
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[[package]]
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name = "syn-mid"
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version = "0.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7be3539f6c128a931cf19dcee741c1af532c7fd387baa739c03dd2e96479338a"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "synstructure"
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version = "0.12.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "67656ea1dc1b41b1451851562ea232ec2e5a80242139f7e679ceccfb5d61f545"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"unicode-xid",
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]
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[[package]]
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name = "tempfile"
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version = "3.1.0"
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@ -1216,13 +1179,22 @@ dependencies = [
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"winapi-util",
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]
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[[package]]
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name = "thread_local"
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version = "0.3.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
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dependencies = [
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"lazy_static 1.4.0",
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]
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[[package]]
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name = "thread_local"
|
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version = "1.0.1"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
|
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dependencies = [
|
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"lazy_static",
|
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"lazy_static 1.4.0",
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]
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[[package]]
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@ -1245,7 +1217,7 @@ dependencies = [
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"bytes 0.5.4",
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"fnv",
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"iovec",
|
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"lazy_static",
|
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"lazy_static 1.4.0",
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"memchr",
|
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"mio",
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"pin-project-lite",
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@ -1300,6 +1272,12 @@ version = "0.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e604eb7b43c06650e854be16a2a03155743d3752dd1c943f6829e26b7a36e382"
|
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|
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[[package]]
|
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name = "ucd-util"
|
||||
version = "0.1.8"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c85f514e095d348c279b1e5cd76795082cf15bd59b93207832abe0b1d8fed236"
|
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|
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[[package]]
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name = "unicase"
|
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version = "2.6.0"
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@ -1361,6 +1339,12 @@ dependencies = [
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"percent-encoding 2.1.0",
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]
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[[package]]
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name = "utf8-ranges"
|
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version = "1.0.4"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b4ae116fef2b7fea257ed6440d3cfcff7f190865f170cdad00bb6465bf18ecba"
|
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|
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[[package]]
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name = "vcpkg"
|
||||
version = "0.2.8"
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@ -1379,6 +1363,12 @@ version = "0.9.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
|
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|
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[[package]]
|
||||
name = "void"
|
||||
version = "1.0.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
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|
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[[package]]
|
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name = "want"
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version = "0.3.0"
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@ -1414,7 +1404,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "11cdb95816290b525b32587d76419facd99662a07e59d3cdb560488a819d9a45"
|
||||
dependencies = [
|
||||
"bumpalo",
|
||||
"lazy_static",
|
||||
"lazy_static 1.4.0",
|
||||
"log",
|
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"proc-macro2",
|
||||
"quote",
|
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|
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@ -1569,7 +1559,7 @@ version = "0.7.0"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3c1cb601d29fe2c2ac60a2b2e5e293994d87a1f6fa9687a31a15270f909be9c2"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"bitflags 1.2.1",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
|
|
|
|||
|
|
@ -17,6 +17,5 @@ serde = { version = "1.0.107", features = ["derive"] }
|
|||
serde_json = "1.0.53"
|
||||
serde-lexpr = "0.1.1"
|
||||
anyhow = "1.0.28"
|
||||
nftnl = "0.3.0"
|
||||
mnl = "0.2.0"
|
||||
libc = "0.2.70"
|
||||
iptables = "0.2.2"
|
||||
regex = "1"
|
||||
|
|
|
|||
135
src/fw.rs
135
src/fw.rs
|
|
@ -1,101 +1,64 @@
|
|||
use nftnl::{nft_expr, Batch, Chain, FinalizedBatch, ProtoFamily, Rule, Table};
|
||||
use std::{
|
||||
ffi::{self, CString},
|
||||
io,
|
||||
};
|
||||
use mnl;
|
||||
use libc;
|
||||
use iptables;
|
||||
use regex::Regex;
|
||||
use std::collections::HashSet;
|
||||
|
||||
const TABLE_NAME: &str = "diplonat";
|
||||
const OUT_CHAIN_NAME: &str = "out";
|
||||
const IN_CHAIN_NAME: &str = "in";
|
||||
#[derive(PartialEq,Eq,Debug,Hash)]
|
||||
pub struct Port {
|
||||
proto: String,
|
||||
number: u16,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Error(String);
|
||||
pub fn setup(ipt: &iptables::IPTables) {
|
||||
ipt.new_chain("filter", "DIPLONAT").unwrap();
|
||||
ipt.insert("filter", "INPUT", "-j DIPLONAT", 1).unwrap();
|
||||
}
|
||||
|
||||
impl From<io::Error> for Error {
|
||||
fn from(error: io::Error) -> Self {
|
||||
Error(error.to_string())
|
||||
pub fn open_ports(ipt: &iptables::IPTables, ports: Vec<Port>) {
|
||||
|
||||
for p in ports {
|
||||
ipt.append("filter", "DIPLONAT", &format!("-p {} --dport {} -j ACCEPT", p.proto, p.number)).unwrap();
|
||||
}
|
||||
}
|
||||
|
||||
impl From<ffi::NulError> for Error {
|
||||
fn from(error: ffi::NulError) -> Self {
|
||||
Error(error.to_string())
|
||||
pub fn get_opened_ports(ipt: &iptables::IPTables) -> HashSet<Port> {
|
||||
let mut opened_ports: HashSet<Port> = HashSet::new();
|
||||
|
||||
let list = ipt.list("filter", "DIPLONAT").unwrap();
|
||||
let re = Regex::new(r"\-A.*? \-p (\w+).*\-\-dport (\d+).*?\-j ACCEPT").unwrap();
|
||||
for i in list {
|
||||
let caps = re.captures(&i);
|
||||
match caps {
|
||||
Some(c) => {
|
||||
let raw_proto = c.get(1).unwrap();
|
||||
let raw_port = c.get(2).unwrap();
|
||||
|
||||
let proto = String::from(raw_proto.as_str());
|
||||
let number = String::from(raw_port.as_str()).parse::<u16>().unwrap();
|
||||
|
||||
opened_ports.insert( Port { proto, number } );
|
||||
},
|
||||
_ => {}
|
||||
}
|
||||
}
|
||||
|
||||
fn send_and_process(batch: &FinalizedBatch) -> Result<(), Error> {
|
||||
let socket = mnl::Socket::new(mnl::Bus::Netfilter)?;
|
||||
socket.send_all(batch)?;
|
||||
|
||||
let portid = socket.portid();
|
||||
let mut buffer = vec![0; nftnl::nft_nlmsg_maxsize() as usize];
|
||||
|
||||
while let Some(message) = socket_recv(&socket, &mut buffer[..])? {
|
||||
match mnl::cb_run(message, 2, portid)? {
|
||||
mnl::CbResult::Stop => {
|
||||
break;
|
||||
}
|
||||
mnl::CbResult::Ok => (),
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
opened_ports
|
||||
}
|
||||
|
||||
fn socket_recv<'a>(socket: &mnl::Socket, buf: &'a mut [u8]) -> Result<Option<&'a [u8]>, Error> {
|
||||
let ret = socket.recv(buf)?;
|
||||
if ret > 0 {
|
||||
Ok(Some(&buf[..ret]))
|
||||
} else {
|
||||
Ok(None)
|
||||
}
|
||||
pub fn cleanup(ipt: &iptables::IPTables) {
|
||||
ipt.flush_chain("filter", "DIPLONAT").unwrap();
|
||||
ipt.delete("filter", "INPUT", "-j DIPLONAT").unwrap();
|
||||
ipt.delete_chain("filter", "DIPLONAT").unwrap();
|
||||
}
|
||||
|
||||
fn add_port_allowed(port: u16) -> Result<(), Error> {
|
||||
let mut batch = Batch::new();
|
||||
|
||||
// TODO: at the moment, I haven't found a way to properly separate setup part (create table and
|
||||
// chains) and the add rule part because the add rule part needs a reference on the chains.
|
||||
// apparently creating a table and chains that already exist seems to do nothing so it works
|
||||
// doing the following. To be done properly though
|
||||
|
||||
let table = Table::new(&CString::new(TABLE_NAME).unwrap(), ProtoFamily::Inet);
|
||||
|
||||
batch.add(&table, nftnl::MsgType::Add);
|
||||
|
||||
let mut out_chain = Chain::new(&CString::new(OUT_CHAIN_NAME).unwrap(), &table);
|
||||
let mut in_chain = Chain::new(&CString::new(IN_CHAIN_NAME).unwrap(), &table);
|
||||
|
||||
out_chain.set_hook(nftnl::Hook::Out, 0);
|
||||
in_chain.set_hook(nftnl::Hook::In, 0);
|
||||
|
||||
out_chain.set_policy(nftnl::Policy::Accept);
|
||||
in_chain.set_policy(nftnl::Policy::Drop);
|
||||
|
||||
batch.add(&out_chain, nftnl::MsgType::Add);
|
||||
batch.add(&in_chain, nftnl::MsgType::Add);
|
||||
|
||||
let mut _rule = Rule::new(&in_chain);
|
||||
|
||||
_rule.add_expr(&nft_expr!(meta nfproto));
|
||||
_rule.add_expr(&nft_expr!(cmp == libc::NFPROTO_IPV4 as u8));
|
||||
|
||||
_rule.add_expr(&nft_expr!(meta l4proto));
|
||||
_rule.add_expr(&nft_expr!(cmp == libc::IPPROTO_TCP as u8));
|
||||
|
||||
_rule.add_expr(&nftnl::expr::Payload::Transport(
|
||||
nftnl::expr::TransportHeaderField::Tcp(nftnl::expr::TcpHeaderField::Dport),
|
||||
));
|
||||
_rule.add_expr(&nft_expr!(cmp == port.to_be()));
|
||||
|
||||
_rule.add_expr(&nft_expr!(verdict accept));
|
||||
|
||||
batch.add(&_rule, nftnl::MsgType::Add);
|
||||
|
||||
let finalized_batch = batch.finalize();
|
||||
send_and_process(&finalized_batch)?;
|
||||
|
||||
Ok(())
|
||||
/*
|
||||
fn main() {
|
||||
let ipt = iptables::new(false).unwrap();
|
||||
setup(&ipt);
|
||||
|
||||
let mut test: HashSet<Port> = HashSet::new();
|
||||
test.insert(Port { proto: String::from("tcp"), number: 443 });
|
||||
let a = get_opened_ports(&ipt);
|
||||
let l = test.difference(&a).collect::<Vec<&Port>>();
|
||||
println!("{:?}", l);
|
||||
}
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -4,7 +4,9 @@ mod consul;
|
|||
mod consul_actor;
|
||||
mod igd_actor;
|
||||
mod diplonat;
|
||||
mod fw;
|
||||
|
||||
use iptables;
|
||||
use log::*;
|
||||
use diplonat::Diplonat;
|
||||
|
||||
|
|
@ -13,6 +15,9 @@ async fn main() {
|
|||
pretty_env_logger::init();
|
||||
info!("Starting Diplonat");
|
||||
|
||||
let ipt = iptables::new(false).unwrap();
|
||||
fw::setup(&ipt).expect("iptables setup failed");
|
||||
|
||||
let mut diplo = Diplonat::new().await.expect("Setup failed");
|
||||
diplo.listen().await.expect("A runtime error occured");
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue