Support STREAMING-AWS4-HMAC-SHA256-PAYLOAD (#64) #156
13 changed files with 578 additions and 77 deletions
39
Cargo.lock
generated
39
Cargo.lock
generated
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@ -433,7 +433,9 @@ dependencies = [
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"idna",
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"log",
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"md-5",
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"nom",
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"percent-encoding",
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"pin-project",
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"quick-xml",
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"roxmltree",
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"serde",
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@ -967,6 +969,12 @@ dependencies = [
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"autocfg",
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]
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[[package]]
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name = "minimal-lexical"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
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[[package]]
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name = "mio"
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version = "0.7.13"
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@ -1011,6 +1019,17 @@ dependencies = [
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"tokio-util",
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]
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[[package]]
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name = "nom"
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version = "7.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1b1d11e1ef389c76fe5b81bcaf2ea32cf88b62bc494e19f493d0b30e7a930109"
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dependencies = [
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"memchr",
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"minimal-lexical",
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"version_check",
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]
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[[package]]
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name = "ntapi"
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version = "0.3.6"
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@ -1092,6 +1111,26 @@ version = "2.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
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[[package]]
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name = "pin-project"
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version = "1.0.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "576bc800220cc65dac09e99e97b08b358cfab6e17078de8dc5fee223bd2d0c08"
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dependencies = [
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"pin-project-internal",
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]
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[[package]]
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name = "pin-project-internal"
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version = "1.0.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6e8fe8163d14ce7f0cdac2e040116f22eac817edabff0be91e8aff7e9accf389"
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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 = "pin-project-lite"
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version = "0.2.7"
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53
Cargo.nix
53
Cargo.nix
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@ -671,7 +671,9 @@ in
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idna = rustPackages."registry+https://github.com/rust-lang/crates.io-index".idna."0.2.3" { inherit profileName; };
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log = rustPackages."registry+https://github.com/rust-lang/crates.io-index".log."0.4.14" { inherit profileName; };
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md5 = rustPackages."registry+https://github.com/rust-lang/crates.io-index".md-5."0.9.1" { inherit profileName; };
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nom = rustPackages."registry+https://github.com/rust-lang/crates.io-index".nom."7.1.0" { inherit profileName; };
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percent_encoding = rustPackages."registry+https://github.com/rust-lang/crates.io-index".percent-encoding."2.1.0" { inherit profileName; };
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pin_project = rustPackages."registry+https://github.com/rust-lang/crates.io-index".pin-project."1.0.8" { inherit profileName; };
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quick_xml = rustPackages."registry+https://github.com/rust-lang/crates.io-index".quick-xml."0.21.0" { inherit profileName; };
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roxmltree = rustPackages."registry+https://github.com/rust-lang/crates.io-index".roxmltree."0.14.1" { inherit profileName; };
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serde = rustPackages."registry+https://github.com/rust-lang/crates.io-index".serde."1.0.130" { inherit profileName; };
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@ -1321,6 +1323,16 @@ in
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};
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});
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"registry+https://github.com/rust-lang/crates.io-index".minimal-lexical."0.2.1" = overridableMkRustCrate (profileName: rec {
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name = "minimal-lexical";
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version = "0.2.1";
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registry = "registry+https://github.com/rust-lang/crates.io-index";
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src = fetchCratesIo { inherit name version; sha256 = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"; };
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features = builtins.concatLists [
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[ "std" ]
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];
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});
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"registry+https://github.com/rust-lang/crates.io-index".mio."0.7.13" = overridableMkRustCrate (profileName: rec {
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name = "mio";
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version = "0.7.13";
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@ -1381,6 +1393,25 @@ in
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};
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});
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"registry+https://github.com/rust-lang/crates.io-index".nom."7.1.0" = overridableMkRustCrate (profileName: rec {
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name = "nom";
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version = "7.1.0";
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registry = "registry+https://github.com/rust-lang/crates.io-index";
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src = fetchCratesIo { inherit name version; sha256 = "1b1d11e1ef389c76fe5b81bcaf2ea32cf88b62bc494e19f493d0b30e7a930109"; };
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features = builtins.concatLists [
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[ "alloc" ]
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[ "default" ]
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[ "std" ]
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];
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dependencies = {
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memchr = rustPackages."registry+https://github.com/rust-lang/crates.io-index".memchr."2.4.1" { inherit profileName; };
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minimal_lexical = rustPackages."registry+https://github.com/rust-lang/crates.io-index".minimal-lexical."0.2.1" { inherit profileName; };
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};
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buildDependencies = {
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version_check = buildRustPackages."registry+https://github.com/rust-lang/crates.io-index".version_check."0.9.3" { profileName = "__noProfile"; };
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};
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});
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"registry+https://github.com/rust-lang/crates.io-index".ntapi."0.3.6" = overridableMkRustCrate (profileName: rec {
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name = "ntapi";
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version = "0.3.6";
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@ -1490,6 +1521,28 @@ in
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src = fetchCratesIo { inherit name version; sha256 = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"; };
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});
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"registry+https://github.com/rust-lang/crates.io-index".pin-project."1.0.8" = overridableMkRustCrate (profileName: rec {
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name = "pin-project";
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version = "1.0.8";
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registry = "registry+https://github.com/rust-lang/crates.io-index";
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src = fetchCratesIo { inherit name version; sha256 = "576bc800220cc65dac09e99e97b08b358cfab6e17078de8dc5fee223bd2d0c08"; };
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dependencies = {
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pin_project_internal = buildRustPackages."registry+https://github.com/rust-lang/crates.io-index".pin-project-internal."1.0.8" { profileName = "__noProfile"; };
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};
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});
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"registry+https://github.com/rust-lang/crates.io-index".pin-project-internal."1.0.8" = overridableMkRustCrate (profileName: rec {
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name = "pin-project-internal";
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version = "1.0.8";
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registry = "registry+https://github.com/rust-lang/crates.io-index";
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src = fetchCratesIo { inherit name version; sha256 = "6e8fe8163d14ce7f0cdac2e040116f22eac817edabff0be91e8aff7e9accf389"; };
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dependencies = {
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proc_macro2 = rustPackages."registry+https://github.com/rust-lang/crates.io-index".proc-macro2."1.0.30" { inherit profileName; };
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quote = rustPackages."registry+https://github.com/rust-lang/crates.io-index".quote."1.0.10" { inherit profileName; };
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syn = rustPackages."registry+https://github.com/rust-lang/crates.io-index".syn."1.0.80" { inherit profileName; };
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};
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});
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"registry+https://github.com/rust-lang/crates.io-index".pin-project-lite."0.2.7" = overridableMkRustCrate (profileName: rec {
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name = "pin-project-lite";
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version = "0.2.7";
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@ -76,7 +76,7 @@ in let
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*/
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''^(src|tests)'' # fixed default
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''.*\.(rs|toml)$'' # fixed default
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''^(crdt|replication|cli|helper)'' # our crate submodules
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''^(crdt|replication|cli|helper|signature)'' # our crate submodules
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];
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};
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@ -8,7 +8,7 @@ cat > /tmp/garage.mc/config.json <<EOF
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"version": "10",
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"aliases": {
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"garage": {
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"url": "https://localhost:4443",
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"url": "http://127.0.0.1:3911",
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"accessKey": "$ACCESS_KEY",
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"secretKey": "$SECRET_KEY",
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"api": "S3v4",
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@ -28,10 +28,12 @@ hmac = "0.10"
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idna = "0.2"
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log = "0.4"
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md-5 = "0.9"
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nom = "7.1"
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sha2 = "0.9"
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futures = "0.3"
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futures-util = "0.3"
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pin-project = "1.0"
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tokio = { version = "1.0", default-features = false, features = ["rt", "rt-multi-thread", "io-util", "net", "time", "macros", "sync", "signal", "fs"] }
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http = "0.2"
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@ -15,7 +15,7 @@ use garage_model::garage::Garage;
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use garage_model::key_table::Key;
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use crate::error::*;
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use crate::signature::check_signature;
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use crate::signature::payload::check_payload_signature;
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use crate::helpers::*;
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use crate::s3_bucket::*;
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@ -90,7 +90,7 @@ async fn handler(
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}
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async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Response<Body>, Error> {
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let (api_key, content_sha256) = check_signature(&garage, &req).await?;
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let (api_key, content_sha256) = check_payload_signature(&garage, &req).await?;
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let authority = req
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.headers()
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@ -176,7 +176,7 @@ async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Respon
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.await
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}
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Endpoint::PutObject { key, .. } => {
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handle_put(garage, req, bucket_id, &key, content_sha256).await
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handle_put(garage, req, bucket_id, &key, &api_key, content_sha256).await
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}
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Endpoint::AbortMultipartUpload { key, upload_id, .. } => {
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handle_abort_multipart_upload(garage, bucket_id, &key, &upload_id).await
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@ -120,7 +120,10 @@ pub async fn handle_create_bucket(
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bucket_name: String,
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) -> Result<Response<Body>, Error> {
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let body = hyper::body::to_bytes(req.into_body()).await?;
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verify_signed_content(content_sha256, &body[..])?;
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if let Some(content_sha256) = content_sha256 {
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verify_signed_content(content_sha256, &body[..])?;
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}
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let cmd =
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parse_create_bucket_xml(&body[..]).ok_or_bad_request("Invalid create bucket XML query")?;
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@ -81,7 +81,10 @@ pub async fn handle_delete_objects(
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content_sha256: Option<Hash>,
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) -> Result<Response<Body>, Error> {
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let body = hyper::body::to_bytes(req.into_body()).await?;
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verify_signed_content(content_sha256, &body[..])?;
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if let Some(content_sha256) = content_sha256 {
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verify_signed_content(content_sha256, &body[..])?;
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}
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let cmd_xml = roxmltree::Document::parse(std::str::from_utf8(&body)?)?;
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let cmd = parse_delete_objects_xml(&cmd_xml).ok_or_bad_request("Invalid delete XML query")?;
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@ -1,8 +1,10 @@
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use std::collections::{BTreeMap, VecDeque};
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use std::sync::Arc;
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use futures::stream::*;
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use hyper::{Body, Request, Response};
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use chrono::{DateTime, NaiveDateTime, Utc};
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use futures::{prelude::*, TryFutureExt};
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use hyper::body::{Body, Bytes};
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use hyper::{Request, Response};
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use md5::{digest::generic_array::*, Digest as Md5Digest, Md5};
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use sha2::Sha256;
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@ -14,19 +16,23 @@ use garage_util::time::*;
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use garage_model::block::INLINE_THRESHOLD;
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use garage_model::block_ref_table::*;
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use garage_model::garage::Garage;
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use garage_model::key_table::Key;
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use garage_model::object_table::*;
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use garage_model::version_table::*;
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use crate::error::*;
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use crate::s3_xml;
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use crate::signature::verify_signed_content;
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use crate::signature::streaming::SignedPayloadStream;
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use crate::signature::LONG_DATETIME;
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use crate::signature::{compute_scope, verify_signed_content};
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pub async fn handle_put(
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garage: Arc<Garage>,
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req: Request<Body>,
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bucket_id: Uuid,
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key: &str,
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content_sha256: Option<Hash>,
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api_key: &Key,
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mut content_sha256: Option<Hash>,
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) -> Result<Response<Body>, Error> {
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// Generate identity of new version
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let version_uuid = gen_uuid();
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@ -40,11 +46,53 @@ pub async fn handle_put(
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Some(x) => Some(x.to_str()?.to_string()),
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None => None,
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};
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let payload_seed_signature = match req.headers().get("x-amz-content-sha256") {
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Some(header) if header == "STREAMING-AWS4-HMAC-SHA256-PAYLOAD" => {
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let content_sha256 = content_sha256
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.take()
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.ok_or_bad_request("No signature provided")?;
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Some(content_sha256)
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}
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_ => None,
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};
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// Parse body of uploaded file
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let body = req.into_body();
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let (head, body) = req.into_parts();
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let body = body.map_err(Error::from);
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let mut chunker = BodyChunker::new(body, garage.config.block_size);
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let body = if let Some(signature) = payload_seed_signature {
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let secret_key = &api_key
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.state
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.as_option()
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.ok_or_internal_error("Deleted key state")?
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.secret_key;
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let date = head
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.headers
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.get("x-amz-date")
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.ok_or_bad_request("Missing X-Amz-Date field")?
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.to_str()?;
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let date: NaiveDateTime =
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NaiveDateTime::parse_from_str(date, LONG_DATETIME).ok_or_bad_request("Invalid date")?;
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let date: DateTime<Utc> = DateTime::from_utc(date, Utc);
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let scope = compute_scope(&date, &garage.config.s3_api.s3_region);
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let signing_hmac = crate::signature::signing_hmac(
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&date,
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secret_key,
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&garage.config.s3_api.s3_region,
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"s3",
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)
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.ok_or_internal_error("Unable to build signing HMAC")?;
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SignedPayloadStream::new(body, signing_hmac, date, &scope, signature)?
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.map_err(Error::from)
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.boxed()
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} else {
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body.boxed()
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};
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let mut chunker = StreamChunker::new(body, garage.config.block_size);
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let first_block = chunker.next().await?.unwrap_or_default();
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// If body is small enough, store it directly in the object table
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@ -178,13 +226,13 @@ fn ensure_checksum_matches(
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Ok(())
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}
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async fn read_and_put_blocks(
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async fn read_and_put_blocks<S: Stream<Item = Result<Bytes, Error>> + Unpin>(
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garage: &Garage,
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version: &Version,
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part_number: u64,
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first_block: Vec<u8>,
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first_block_hash: Hash,
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chunker: &mut BodyChunker,
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chunker: &mut StreamChunker<S>,
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) -> Result<(u64, GenericArray<u8, typenum::U16>, Hash), Error> {
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let mut md5hasher = Md5::new();
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let mut sha256hasher = Sha256::new();
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@ -205,8 +253,11 @@ async fn read_and_put_blocks(
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.rpc_put_block(first_block_hash, first_block);
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loop {
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let (_, _, next_block) =
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futures::try_join!(put_curr_block, put_curr_version_block, chunker.next())?;
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let (_, _, next_block) = futures::try_join!(
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put_curr_block.map_err(Error::from),
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put_curr_version_block.map_err(Error::from),
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chunker.next(),
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)?;
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if let Some(block) = next_block {
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md5hasher.update(&block[..]);
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sha256hasher.update(&block[..]);
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|
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@ -266,32 +317,34 @@ async fn put_block_meta(
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Ok(())
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}
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struct BodyChunker {
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body: Body,
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struct StreamChunker<S: Stream<Item = Result<Bytes, Error>>> {
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stream: S,
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read_all: bool,
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block_size: usize,
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buf: VecDeque<u8>,
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}
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impl BodyChunker {
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fn new(body: Body, block_size: usize) -> Self {
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impl<S: Stream<Item = Result<Bytes, Error>> + Unpin> StreamChunker<S> {
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fn new(stream: S, block_size: usize) -> Self {
|
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Self {
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body,
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stream,
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read_all: false,
|
||||
block_size,
|
||||
buf: VecDeque::with_capacity(2 * block_size),
|
||||
}
|
||||
}
|
||||
async fn next(&mut self) -> Result<Option<Vec<u8>>, GarageError> {
|
||||
|
||||
async fn next(&mut self) -> Result<Option<Vec<u8>>, Error> {
|
||||
while !self.read_all && self.buf.len() < self.block_size {
|
||||
if let Some(block) = self.body.next().await {
|
||||
if let Some(block) = self.stream.next().await {
|
||||
let bytes = block?;
|
||||
trace!("Body next: {} bytes", bytes.len());
|
||||
self.buf.extend(&bytes[..]);
|
||||
self.buf.extend(bytes);
|
||||
} else {
|
||||
self.read_all = true;
|
||||
}
|
||||
}
|
||||
|
||||
if self.buf.is_empty() {
|
||||
Ok(None)
|
||||
} else if self.buf.len() <= self.block_size {
|
||||
|
|
@ -368,12 +421,20 @@ pub async fn handle_put_part(
|
|||
|
||||
// Read first chuck, and at the same time try to get object to see if it exists
|
||||
let key = key.to_string();
|
||||
let mut chunker = BodyChunker::new(req.into_body(), garage.config.block_size);
|
||||
|
||||
let body = req.into_body().map_err(Error::from);
|
||||
let mut chunker = StreamChunker::new(body, garage.config.block_size);
|
||||
|
||||
let (object, version, first_block) = futures::try_join!(
|
||||
garage.object_table.get(&bucket_id, &key),
|
||||
garage.version_table.get(&version_uuid, &EmptyKey),
|
||||
chunker.next()
|
||||
garage
|
||||
.object_table
|
||||
.get(&bucket_id, &key)
|
||||
.map_err(Error::from),
|
||||
garage
|
||||
.version_table
|
||||
.get(&version_uuid, &EmptyKey)
|
||||
.map_err(Error::from),
|
||||
chunker.next(),
|
||||
)?;
|
||||
|
||||
// Check object is valid and multipart block can be accepted
|
||||
|
|
@ -444,7 +505,10 @@ pub async fn handle_complete_multipart_upload(
|
|||
content_sha256: Option<Hash>,
|
||||
) -> Result<Response<Body>, Error> {
|
||||
let body = hyper::body::to_bytes(req.into_body()).await?;
|
||||
verify_signed_content(content_sha256, &body[..])?;
|
||||
|
||||
if let Some(content_sha256) = content_sha256 {
|
||||
verify_signed_content(content_sha256, &body[..])?;
|
||||
}
|
||||
|
||||
let body_xml = roxmltree::Document::parse(std::str::from_utf8(&body)?)?;
|
||||
let body_list_of_parts = parse_complete_multpart_upload_body(&body_xml)
|
||||
|
|
|
|||
|
|
@ -44,7 +44,10 @@ pub async fn handle_put_website(
|
|||
content_sha256: Option<Hash>,
|
||||
) -> Result<Response<Body>, Error> {
|
||||
let body = hyper::body::to_bytes(req.into_body()).await?;
|
||||
verify_signed_content(content_sha256, &body[..])?;
|
||||
|
||||
if let Some(content_sha256) = content_sha256 {
|
||||
verify_signed_content(content_sha256, &body[..])?;
|
||||
}
|
||||
|
||||
let mut bucket = garage
|
||||
.bucket_table
|
||||
|
|
|
|||
47
src/api/signature/mod.rs
Normal file
47
src/api/signature/mod.rs
Normal file
|
|
@ -0,0 +1,47 @@
|
|||
use chrono::{DateTime, Utc};
|
||||
use hmac::{Hmac, Mac, NewMac};
|
||||
use sha2::Sha256;
|
||||
|
||||
use garage_util::data::{sha256sum, Hash};
|
||||
|
||||
use crate::error::*;
|
||||
|
||||
pub mod payload;
|
||||
pub mod streaming;
|
||||
|
||||
pub const SHORT_DATE: &str = "%Y%m%d";
|
||||
pub const LONG_DATETIME: &str = "%Y%m%dT%H%M%SZ";
|
||||
|
||||
type HmacSha256 = Hmac<Sha256>;
|
||||
|
||||
pub fn verify_signed_content(expected_sha256: Hash, body: &[u8]) -> Result<(), Error> {
|
||||
if expected_sha256 != sha256sum(body) {
|
||||
return Err(Error::BadRequest(
|
||||
"Request content hash does not match signed hash".to_string(),
|
||||
));
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn signing_hmac(
|
||||
datetime: &DateTime<Utc>,
|
||||
secret_key: &str,
|
||||
region: &str,
|
||||
service: &str,
|
||||
) -> Result<HmacSha256, crypto_mac::InvalidKeyLength> {
|
||||
let secret = String::from("AWS4") + secret_key;
|
||||
let mut date_hmac = HmacSha256::new_varkey(secret.as_bytes())?;
|
||||
date_hmac.update(datetime.format(SHORT_DATE).to_string().as_bytes());
|
||||
let mut region_hmac = HmacSha256::new_varkey(&date_hmac.finalize().into_bytes())?;
|
||||
region_hmac.update(region.as_bytes());
|
||||
let mut service_hmac = HmacSha256::new_varkey(®ion_hmac.finalize().into_bytes())?;
|
||||
service_hmac.update(service.as_bytes());
|
||||
let mut signing_hmac = HmacSha256::new_varkey(&service_hmac.finalize().into_bytes())?;
|
||||
signing_hmac.update(b"aws4_request");
|
||||
let hmac = HmacSha256::new_varkey(&signing_hmac.finalize().into_bytes())?;
|
||||
Ok(hmac)
|
||||
}
|
||||
|
||||
pub fn compute_scope(datetime: &DateTime<Utc>, region: &str) -> String {
|
||||
format!("{}/{}/s3/aws4_request", datetime.format(SHORT_DATE), region,)
|
||||
}
|
||||
|
|
@ -1,25 +1,23 @@
|
|||
use std::collections::HashMap;
|
||||
|
||||
use chrono::{DateTime, Duration, NaiveDateTime, Utc};
|
||||
use hmac::{Hmac, Mac, NewMac};
|
||||
use hmac::Mac;
|
||||
use hyper::{Body, Method, Request};
|
||||
use sha2::{Digest, Sha256};
|
||||
|
||||
use garage_table::*;
|
||||
use garage_util::data::{sha256sum, Hash};
|
||||
use garage_util::data::Hash;
|
||||
|
||||
use garage_model::garage::Garage;
|
||||
use garage_model::key_table::*;
|
||||
|
||||
use super::signing_hmac;
|
||||
use super::{LONG_DATETIME, SHORT_DATE};
|
||||
|
||||
use crate::encoding::uri_encode;
|
||||
use crate::error::*;
|
||||
|
||||
const SHORT_DATE: &str = "%Y%m%d";
|
||||
const LONG_DATETIME: &str = "%Y%m%dT%H%M%SZ";
|
||||
|
||||
type HmacSha256 = Hmac<Sha256>;
|
||||
|
||||
pub async fn check_signature(
|
||||
pub async fn check_payload_signature(
|
||||
garage: &Garage,
|
||||
request: &Request<Body>,
|
||||
) -> Result<(Key, Option<Hash>), Error> {
|
||||
|
|
@ -97,13 +95,13 @@ pub async fn check_signature(
|
|||
|
||||
let content_sha256 = if authorization.content_sha256 == "UNSIGNED-PAYLOAD" {
|
||||
None
|
||||
} else if authorization.content_sha256 == "STREAMING-AWS4-HMAC-SHA256-PAYLOAD" {
|
||||
let bytes = hex::decode(authorization.signature).ok_or_bad_request("Invalid signature")?;
|
||||
Some(Hash::try_from(&bytes).ok_or_bad_request("Invalid signature")?)
|
||||
} else {
|
||||
let bytes = hex::decode(authorization.content_sha256)
|
||||
.ok_or_bad_request("Invalid content sha256 hash")?;
|
||||
Some(
|
||||
Hash::try_from(&bytes[..])
|
||||
.ok_or_else(|| Error::BadRequest("Invalid content sha256 hash".to_string()))?,
|
||||
)
|
||||
Some(Hash::try_from(&bytes).ok_or_bad_request("Invalid content sha256 hash")?)
|
||||
};
|
||||
|
||||
Ok((key, content_sha256))
|
||||
|
|
@ -222,25 +220,6 @@ fn string_to_sign(datetime: &DateTime<Utc>, scope_string: &str, canonical_req: &
|
|||
.join("\n")
|
||||
}
|
||||
|
||||
fn signing_hmac(
|
||||
datetime: &DateTime<Utc>,
|
||||
secret_key: &str,
|
||||
region: &str,
|
||||
service: &str,
|
||||
) -> Result<HmacSha256, crypto_mac::InvalidKeyLength> {
|
||||
let secret = String::from("AWS4") + secret_key;
|
||||
let mut date_hmac = HmacSha256::new_varkey(secret.as_bytes())?;
|
||||
date_hmac.update(datetime.format(SHORT_DATE).to_string().as_bytes());
|
||||
let mut region_hmac = HmacSha256::new_varkey(&date_hmac.finalize().into_bytes())?;
|
||||
region_hmac.update(region.as_bytes());
|
||||
let mut service_hmac = HmacSha256::new_varkey(®ion_hmac.finalize().into_bytes())?;
|
||||
service_hmac.update(service.as_bytes());
|
||||
let mut signing_hmac = HmacSha256::new_varkey(&service_hmac.finalize().into_bytes())?;
|
||||
signing_hmac.update(b"aws4_request");
|
||||
let hmac = HmacSha256::new_varkey(&signing_hmac.finalize().into_bytes())?;
|
||||
Ok(hmac)
|
||||
}
|
||||
|
||||
fn canonical_request(
|
||||
method: &Method,
|
||||
url_path: &str,
|
||||
|
|
@ -288,14 +267,3 @@ fn canonical_query_string(uri: &hyper::Uri) -> String {
|
|||
"".to_string()
|
||||
}
|
||||
}
|
||||
|
||||
pub fn verify_signed_content(content_sha256: Option<Hash>, body: &[u8]) -> Result<(), Error> {
|
||||
let expected_sha256 =
|
||||
content_sha256.ok_or_bad_request("Request content hash not signed, aborting.")?;
|
||||
if expected_sha256 != sha256sum(body) {
|
||||
return Err(Error::BadRequest(
|
||||
"Request content hash does not match signed hash".to_string(),
|
||||
));
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
319
src/api/signature/streaming.rs
Normal file
319
src/api/signature/streaming.rs
Normal file
|
|
@ -0,0 +1,319 @@
|
|||
use std::pin::Pin;
|
||||
|
||||
use chrono::{DateTime, Utc};
|
||||
use futures::prelude::*;
|
||||
use futures::task;
|
||||
use hyper::body::Bytes;
|
||||
|
||||
use garage_util::data::Hash;
|
||||
use hmac::Mac;
|
||||
|
||||
use super::sha256sum;
|
||||
use super::HmacSha256;
|
||||
use super::LONG_DATETIME;
|
||||
|
||||
use crate::error::*;
|
||||
|
||||
/// Result of `sha256("")`
|
||||
const EMPTY_STRING_HEX_DIGEST: &str =
|
||||
"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
|
||||
|
||||
fn compute_streaming_payload_signature(
|
||||
signing_hmac: &HmacSha256,
|
||||
date: DateTime<Utc>,
|
||||
scope: &str,
|
||||
previous_signature: Hash,
|
||||
content_sha256: Hash,
|
||||
) -> Result<Hash, Error> {
|
||||
let string_to_sign = [
|
||||
"AWS4-HMAC-SHA256-PAYLOAD",
|
||||
&date.format(LONG_DATETIME).to_string(),
|
||||
scope,
|
||||
&hex::encode(previous_signature),
|
||||
EMPTY_STRING_HEX_DIGEST,
|
||||
&hex::encode(content_sha256),
|
||||
]
|
||||
.join("\n");
|
||||
|
||||
let mut hmac = signing_hmac.clone();
|
||||
hmac.update(string_to_sign.as_bytes());
|
||||
|
||||
Hash::try_from(&hmac.finalize().into_bytes()).ok_or_internal_error("Invalid signature")
|
||||
}
|
||||
|
||||
mod payload {
|
||||
use garage_util::data::Hash;
|
||||
|
||||
pub enum Error<I> {
|
||||
Parser(nom::error::Error<I>),
|
||||
BadSignature,
|
||||
}
|
||||
|
||||
impl<I> Error<I> {
|
||||
pub fn description(&self) -> &str {
|
||||
match *self {
|
||||
Error::Parser(ref e) => e.code.description(),
|
||||
Error::BadSignature => "Bad signature",
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct Header {
|
||||
pub size: usize,
|
||||
pub signature: Hash,
|
||||
}
|
||||
|
||||
impl Header {
|
||||
pub fn parse(input: &[u8]) -> nom::IResult<&[u8], Self, Error<&[u8]>> {
|
||||
use nom::bytes::streaming::tag;
|
||||
use nom::character::streaming::hex_digit1;
|
||||
use nom::combinator::map_res;
|
||||
use nom::number::streaming::hex_u32;
|
||||
|
||||
macro_rules! try_parse {
|
||||
($expr:expr) => {
|
||||
$expr.map_err(|e| e.map(Error::Parser))?
|
||||
};
|
||||
}
|
||||
|
||||
let (input, size) = try_parse!(hex_u32(input));
|
||||
let (input, _) = try_parse!(tag(";")(input));
|
||||
|
||||
let (input, _) = try_parse!(tag("chunk-signature=")(input));
|
||||
let (input, data) = try_parse!(map_res(hex_digit1, hex::decode)(input));
|
||||
let signature = Hash::try_from(&data).ok_or(nom::Err::Failure(Error::BadSignature))?;
|
||||
|
||||
let (input, _) = try_parse!(tag("\r\n")(input));
|
||||
|
||||
let header = Header {
|
||||
size: size as usize,
|
||||
signature,
|
||||
};
|
||||
|
||||
Ok((input, header))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum SignedPayloadStreamError {
|
||||
Stream(Error),
|
||||
InvalidSignature,
|
||||
Message(String),
|
||||
}
|
||||
|
||||
impl SignedPayloadStreamError {
|
||||
fn message(msg: &str) -> Self {
|
||||
SignedPayloadStreamError::Message(msg.into())
|
||||
}
|
||||
}
|
||||
|
||||
impl From<SignedPayloadStreamError> for Error {
|
||||
fn from(err: SignedPayloadStreamError) -> Self {
|
||||
match err {
|
||||
SignedPayloadStreamError::Stream(e) => e,
|
||||
SignedPayloadStreamError::InvalidSignature => {
|
||||
Error::BadRequest("Invalid payload signature".into())
|
||||
}
|
||||
SignedPayloadStreamError::Message(e) => {
|
||||
Error::BadRequest(format!("Chunk format error: {}", e))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<I> From<payload::Error<I>> for SignedPayloadStreamError {
|
||||
fn from(err: payload::Error<I>) -> Self {
|
||||
Self::message(err.description())
|
||||
}
|
||||
}
|
||||
|
||||
impl<I> From<nom::error::Error<I>> for SignedPayloadStreamError {
|
||||
fn from(err: nom::error::Error<I>) -> Self {
|
||||
Self::message(err.code.description())
|
||||
}
|
||||
}
|
||||
|
||||
struct SignedPayload {
|
||||
header: payload::Header,
|
||||
data: Bytes,
|
||||
}
|
||||
|
||||
#[pin_project::pin_project]
|
||||
pub struct SignedPayloadStream<S>
|
||||
where
|
||||
S: Stream<Item = Result<Bytes, Error>>,
|
||||
{
|
||||
#[pin]
|
||||
stream: S,
|
||||
buf: bytes::BytesMut,
|
||||
datetime: DateTime<Utc>,
|
||||
scope: String,
|
||||
signing_hmac: HmacSha256,
|
||||
previous_signature: Hash,
|
||||
}
|
||||
|
||||
impl<S> SignedPayloadStream<S>
|
||||
where
|
||||
S: Stream<Item = Result<Bytes, Error>>,
|
||||
{
|
||||
pub fn new(
|
||||
stream: S,
|
||||
signing_hmac: HmacSha256,
|
||||
datetime: DateTime<Utc>,
|
||||
scope: &str,
|
||||
seed_signature: Hash,
|
||||
) -> Result<Self, Error> {
|
||||
Ok(Self {
|
||||
stream,
|
||||
buf: bytes::BytesMut::new(),
|
||||
datetime,
|
||||
scope: scope.into(),
|
||||
signing_hmac,
|
||||
previous_signature: seed_signature,
|
||||
})
|
||||
}
|
||||
|
||||
fn parse_next(input: &[u8]) -> nom::IResult<&[u8], SignedPayload, SignedPayloadStreamError> {
|
||||
use nom::bytes::streaming::{tag, take};
|
||||
|
||||
macro_rules! try_parse {
|
||||
($expr:expr) => {
|
||||
$expr.map_err(nom::Err::convert)?
|
||||
};
|
||||
}
|
||||
|
||||
let (input, header) = try_parse!(payload::Header::parse(input));
|
||||
|
||||
// 0-sized chunk is the last
|
||||
if header.size == 0 {
|
||||
return Ok((
|
||||
input,
|
||||
SignedPayload {
|
||||
header,
|
||||
data: Bytes::new(),
|
||||
},
|
||||
));
|
||||
}
|
||||
|
||||
let (input, data) = try_parse!(take::<_, _, nom::error::Error<_>>(header.size)(input));
|
||||
let (input, _) = try_parse!(tag::<_, _, nom::error::Error<_>>("\r\n")(input));
|
||||
|
||||
let data = Bytes::from(data.to_vec());
|
||||
|
||||
Ok((input, SignedPayload { header, data }))
|
||||
}
|
||||
}
|
||||
|
||||
impl<S> Stream for SignedPayloadStream<S>
|
||||
where
|
||||
S: Stream<Item = Result<Bytes, Error>> + Unpin,
|
||||
{
|
||||
type Item = Result<Bytes, SignedPayloadStreamError>;
|
||||
|
||||
fn poll_next(
|
||||
self: Pin<&mut Self>,
|
||||
cx: &mut task::Context<'_>,
|
||||
) -> task::Poll<Option<Self::Item>> {
|
||||
use std::task::Poll;
|
||||
|
||||
let mut this = self.project();
|
||||
|
||||
loop {
|
||||
let (input, payload) = match Self::parse_next(this.buf) {
|
||||
Ok(res) => res,
|
||||
Err(nom::Err::Incomplete(_)) => {
|
||||
match futures::ready!(this.stream.as_mut().poll_next(cx)) {
|
||||
Some(Ok(bytes)) => {
|
||||
this.buf.extend(bytes);
|
||||
continue;
|
||||
}
|
||||
Some(Err(e)) => {
|
||||
return Poll::Ready(Some(Err(SignedPayloadStreamError::Stream(e))))
|
||||
}
|
||||
None => {
|
||||
return Poll::Ready(Some(Err(SignedPayloadStreamError::message(
|
||||
"Unexpected EOF",
|
||||
))));
|
||||
}
|
||||
}
|
||||
}
|
||||
Err(nom::Err::Error(e)) | Err(nom::Err::Failure(e)) => {
|
||||
return Poll::Ready(Some(Err(e)))
|
||||
}
|
||||
};
|
||||
|
||||
// 0-sized chunk is the last
|
||||
if payload.data.is_empty() {
|
||||
return Poll::Ready(None);
|
||||
}
|
||||
|
||||
let data_sha256sum = sha256sum(&payload.data);
|
||||
|
||||
let expected_signature = compute_streaming_payload_signature(
|
||||
this.signing_hmac,
|
||||
*this.datetime,
|
||||
this.scope,
|
||||
*this.previous_signature,
|
||||
data_sha256sum,
|
||||
)
|
||||
.map_err(|e| {
|
||||
SignedPayloadStreamError::Message(format!("Could not build signature: {}", e))
|
||||
})?;
|
||||
|
||||
if payload.header.signature != expected_signature {
|
||||
return Poll::Ready(Some(Err(SignedPayloadStreamError::InvalidSignature)));
|
||||
}
|
||||
|
||||
*this.buf = input.into();
|
||||
*this.previous_signature = payload.header.signature;
|
||||
|
||||
return Poll::Ready(Some(Ok(payload.data)));
|
||||
}
|
||||
}
|
||||
|
||||
fn size_hint(&self) -> (usize, Option<usize>) {
|
||||
self.stream.size_hint()
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use futures::prelude::*;
|
||||
|
||||
use super::{SignedPayloadStream, SignedPayloadStreamError};
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_interrupted_signed_payload_stream() {
|
||||
use chrono::{DateTime, Utc};
|
||||
|
||||
use garage_util::data::Hash;
|
||||
|
||||
let datetime = DateTime::parse_from_rfc3339("2021-12-13T13:12:42+01:00") // TODO UNIX 0
|
||||
.unwrap()
|
||||
.with_timezone(&Utc);
|
||||
let secret_key = "test";
|
||||
let region = "test";
|
||||
let scope = crate::signature::compute_scope(&datetime, region);
|
||||
let signing_hmac =
|
||||
crate::signature::signing_hmac(&datetime, secret_key, region, "s3").unwrap();
|
||||
|
||||
let data: &[&[u8]] = &[b"1"];
|
||||
let body = futures::stream::iter(data.iter().map(|block| Ok(block.as_ref().into())));
|
||||
|
||||
let seed_signature = Hash::default();
|
||||
|
||||
let mut stream =
|
||||
SignedPayloadStream::new(body, signing_hmac, datetime, &scope, seed_signature).unwrap();
|
||||
|
||||
assert!(stream.try_next().await.is_err());
|
||||
match stream.try_next().await {
|
||||
Err(SignedPayloadStreamError::Message(msg)) if msg == "Unexpected EOF" => {}
|
||||
item => panic!(
|
||||
"Unexpected result, expected early EOF error, got {:?}",
|
||||
item
|
||||
),
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue