Migrate to encodify

Cargo.lock

@@ -157,7 +157,7 @@ checksum = "82f6aeea286b8eb4dd3431a1be1b59d290ace00f5bfd8e2a159bc2a05e2c1667"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -174,9 +174,9 @@ checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
 
 [[package]]
 name = "aws-lc-rs"
-version = "1.18.0"
+version = "1.18.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce2b2dcc879c3bae0d371e77c99f2238400ef24ec001394befa67b6e543add9e"
+checksum = "b281d307588d634de920874890732659e2e7672f72b5e10e81badc1a8a83621e"
 dependencies = [
  "aws-lc-sys",
  "zeroize",
@@ -184,9 +184,9 @@ dependencies = [
 
 [[package]]
 name = "aws-lc-sys"
-version = "0.44.0"
+version = "0.45.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f09fae7be8bb3174e05c6afdb34199e6dc0c7c04ba9fa237b1967adfbde27483"
+checksum = "9bff6c3b54fad79a2e60b8102caf565819711497c1f5f092f49508e2f5c31b27"
 dependencies = [
  "cc",
  "cmake",
@@ -258,9 +258,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.13.1"
+version = "2.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da"
+checksum = "3ded4057c258ba199e2d26386d3af3780957ecaee6c4ef4041c6b4b8b97c0b06"
 
 [[package]]
 name = "blake3"
@@ -283,7 +283,7 @@ checksum = "dbe8358268799ebb3e4df23cb9d47f4c72bbc4f5247e2fa6a1bf7b6c0baea220"
 dependencies = [
  "async-stream",
  "base64 0.22.1",
- "bitflags 2.13.1",
+ "bitflags 2.13.2",
  "bollard-buildkit-proto",
  "bollard-stubs",
  "bytes",
@@ -301,7 +301,7 @@ dependencies = [
  "log",
  "num",
  "pin-project-lite",
- "rand 0.10.2",
+ "rand 0.10.3",
  "rustls",
  "rustls-native-certs",
  "rustls-pki-types",
@@ -371,9 +371,9 @@ checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 
 [[package]]
 name = "calcard"
-version = "0.3.13"
+version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75b779382e675380a1ff8a4873acee5ba60158be7a00458fb98e6b85aad1f2ee"
+checksum = "c601473ec15a875626bce73db1a1f0fc81e9c949ca25f1463b714947c0a70a1f"
 dependencies = [
  "ahash",
  "chrono",
@@ -389,9 +389,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.4.4"
+version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ad534f4357a5264cce5019c989cf66a4f0dc4e0d1b1d15f8aacec0ff7360273"
+checksum = "f360145194ee8e21db5ee7f3fcd4fe52210864c75c985dae33218202c8bbe040"
 dependencies = [
  "find-msvc-tools",
  "jobserver",
@@ -401,15 +401,15 @@ dependencies = [
 
 [[package]]
 name = "cfg-if"
-version = "1.0.4"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+checksum = "4e7648175b45a9a48536d676f68d918270699102aa8dab5496df06904c914600"
 
 [[package]]
 name = "chacha20"
-version = "0.10.1"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+checksum = "65c35e4b699c7e15ccbe7ee35c005e4fc0a278d22238a2857e6ce2dadeda1b06"
 dependencies = [
  "cfg-if",
  "cpufeatures",
@@ -442,9 +442,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.6.6"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "473c7e07f409a8d772161724aa8db6a765a2532a70f9667eeb7b49d3d02fbdca"
+checksum = "aa8876b300ab35ba921adea3dfd70157a46249b33f95c9084ae5709785478946"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -452,9 +452,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.6.6"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b48fea5a88e9ae728a2dcbedbfc0e730f7d60da42e1cb049a83c9fb8b789889"
+checksum = "ec0797fb7aeb1406c84efac526901f7ec3ead2124f946b494e72879d4b54704d"
 dependencies = [
  "anstream",
  "anstyle",
@@ -464,21 +464,21 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.6.4"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d012d2b9d65aca7f18f4d9878a045bc17899bba951561ba5ec3c2ba1eed9a061"
+checksum = "f9c751b79415d4e559e3d1fcf128e09e720eb673a06d26cf6f392d37d75b66e0"
 dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
 name = "clap_lex"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
+checksum = "1c133bc6a41be0d194c306b5506d15e6feeea7b1d6604bd3f8310dfb2ca96486"
 
 [[package]]
 name = "cmake"
@@ -540,7 +540,7 @@ dependencies = [
  "cookie",
  "document-features",
  "idna",
- "indexmap 2.14.0",
+ "indexmap 2.14.2",
  "log",
  "serde",
  "serde_derive",
@@ -567,42 +567,42 @@ checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "cpufeatures"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+checksum = "5ca28b0ae3115b884660db4118d803791fd6756b6e88f39c0f3f7859060d7566"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "crc32fast"
-version = "1.5.1"
+version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8498c871161e1742aaa9d52551b2d6ebdd4c3d45a3be423e3728f33b955be550"
+checksum = "01a7799fd6b852db0e61728dde9a204c423b44d689dbd432522543614b490e78"
 dependencies = [
  "cfg-if",
 ]
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.16"
+version = "0.5.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d85363c37faeca707aef026efa9f3b34d077bce547e48f770770625c6013679e"
+checksum = "98b0cc327b5bc766e7fda9c9260cc0fa81b43a8e240440422dff70788e3f9ef1"
 dependencies = [
  "crossbeam-utils",
 ]
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.22"
+version = "0.8.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61803da095bee82a81bb1a452ecc25d3b2f1416d1897eb86430c6159ef717c17"
+checksum = "a31eee39dddec8330830986fcd7625edb5a24ec90ea038215273bbc3adb08ac6"
 
 [[package]]
 name = "darling"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25ae13da2f202d56bd7f91c25fba009e7717a1e4a1cc98a76d844b65ae912e9d"
+checksum = "ed17f5901b6630b993ca003def43f2f8ef4014fc13b047b57aad617ff32bc2ec"
 dependencies = [
  "darling_core",
  "darling_macro",
@@ -610,26 +610,26 @@ dependencies = [
 
 [[package]]
 name = "darling_core"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9865a50f7c335f53564bb694ef660825eb8610e0a53d3e11bf1b0d3df31e03b0"
+checksum = "6837e2cf7485aaae18f86181d2f0e9a7ed297a025e220aeabf63fdebd3a2ddff"
 dependencies = [
  "ident_case",
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.119",
+ "syn 3.0.6",
 ]
 
 [[package]]
 name = "darling_macro"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3984ec7bd6cfa798e62b4a642426a5be0e68f9401cfc2a01e3fa9ea2fcdb8d"
+checksum = "2ac7135c3ef02b2f7833bbeb1be5ba7f966dcde8a87c6b87f65a778d71a02785"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -680,7 +680,7 @@ checksum = "c6232dd377dcc64799954cbd3a9bb882e9cdc1308ccd87b1c098f1fb2eaf82a8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -721,6 +721,14 @@ version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "252afb9ae5eaa683babdc6a068b3f5726eb19e05070c731f9b2a23a7c3e8ed34"
 
+[[package]]
+name = "encodify"
+version = "1.0.0"
+dependencies = [
+ "memchr",
+ "simdutf8",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -772,24 +780,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ee93edf3c501f0035bbeffeccfed0b79e14c311f12195ec0e661e114a0f60da4"
 dependencies = [
  "portable-atomic",
- "rand 0.10.2",
+ "rand 0.10.3",
  "web-time",
 ]
 
 [[package]]
 name = "find-msvc-tools"
-version = "0.1.11"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d45db016d36b838f563236e9193d0ee6ce38f3f68b6c94e914b4929c96bbb890"
+checksum = "aedcfb3409746eddb02b9e19ebda1c3394f759a152e48ee875a0844d1b955484"
 
 [[package]]
 name = "flate2"
-version = "1.1.9"
+version = "1.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "843fba2746e448b37e26a819579957415c8cef339bf08564fe8b7ddbd959573c"
+checksum = "6e634e2e0ebac1ee034020da1ca582e17ffe4e0f5e985823721e168928136dcb"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
+ "zlib-rs",
 ]
 
 [[package]]
@@ -875,7 +884,7 @@ checksum = "9fb9654ba8355388abeb8dcb4fc62f511300867002afc858860463bdd9fe0c44"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -954,7 +963,7 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "http",
- "indexmap 2.14.0",
+ "indexmap 2.14.2",
  "slab",
  "tokio",
  "tokio-util",
@@ -991,7 +1000,7 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd1246c0e5493286aeb2dde35b1f4eb9c4ce00e628641210a5e553fc001a1f26"
 dependencies = [
- "indexmap 2.14.0",
+ "indexmap 2.14.2",
  "proc-macro2",
  "quote",
  "syn 2.0.119",
@@ -999,9 +1008,9 @@ dependencies = [
 
 [[package]]
 name = "hashlink"
-version = "0.12.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32069d97bb81e38fa67eab65e3393bf804bb85969f2bc06bf13f64aef5aba248"
+checksum = "a596f1b20ed2cc5ecac41a164aaebc7258057060f06c0cf7a2ba3991ee7990fb"
 dependencies = [
  "hashbrown 0.17.1",
 ]
@@ -1014,9 +1023,9 @@ checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "hermit-abi"
-version = "0.5.2"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc0fef456e4baa96da950455cd02c081ca953b141298e41db3fc7e36b1da849c"
+checksum = "e17592d60ebacc7d5e169f4663c5f84f9161cc90328abcfe8456f41e4dfcb284"
 
 [[package]]
 name = "hex"
@@ -1080,9 +1089,9 @@ checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
 
 [[package]]
 name = "hyper"
-version = "1.11.0"
+version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d22053281f852e11534f5198498373cbb59295120a20771d90f7ed1897490a72"
+checksum = "27b501faa50e7a26c3d3560ca625132f4078a17771f4810baf70475ae48cbe43"
 dependencies = [
  "atomic-waker",
  "bytes",
@@ -1116,9 +1125,9 @@ dependencies = [
 
 [[package]]
 name = "hyper-rustls"
-version = "0.27.9"
+version = "0.27.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33ca68d021ef39cf6463ab54c1d0f5daf03377b70561305bb89a8f83aab66e0f"
+checksum = "dfa8e654703247911e29c23fbeaa261834bd9bb74efba2f9acddc37bfb127f53"
 dependencies = [
  "http",
  "hyper",
@@ -1144,15 +1153,16 @@ dependencies = [
 
 [[package]]
 name = "hyper-util"
-version = "0.1.20"
+version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96547c2556ec9d12fb1578c4eaf448b04993e7fb79cbaad930a656880a6bdfa0"
+checksum = "ddc03d96684f9226b8a787cdb71488417b53ab5ea8fdb1dac946cb9431cc8bff"
 dependencies = [
  "bytes",
  "futures-channel",
  "futures-util",
  "http",
  "http-body",
+ "httparse",
  "hyper",
  "libc",
  "pin-project-lite",
@@ -1324,9 +1334,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.14.0"
+version = "2.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d466e9454f08e4a911e14806c24e16fba1b4c121d1ea474396f396069cf949d9"
+checksum = "cc4e190f5d26ca7051642629da2c52fc03bde85a03197c99408dcd291734c855"
 dependencies = [
  "equivalent",
  "hashbrown 0.17.1",
@@ -1357,9 +1367,9 @@ checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
 [[package]]
 name = "jiff"
-version = "0.2.35"
+version = "0.2.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "668b7183bd07af9a4885f5c35b0cc5c83c4607a913c16b7e17291832910d2dcc"
+checksum = "0ab1baf72f08796de0260609515130699b890ac25f30e610ad894bc5856cafdb"
 dependencies = [
  "defmt",
  "jiff-core",
@@ -1374,18 +1384,19 @@ dependencies = [
 
 [[package]]
 name = "jiff-core"
-version = "0.1.0"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7feca88439efe53da3754500c1851dedf3cb36c524dd5cf8225cc0794de95d09"
+checksum = "5e52fe76043ccecc9005d2305ebaadf7d7fc0cc89ca6baa10a94d6bc68c7128c"
 dependencies = [
  "defmt",
+ "log",
 ]
 
 [[package]]
 name = "jiff-static"
-version = "0.2.35"
+version = "0.2.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a69dcb3a21cfb32ce1cd056169337ca284af0766dd766e7878819b251a49204"
+checksum = "378268a1116ad67ae6228701118ac9f491d78fda38a40a1f1a9e1348de6f7212"
 dependencies = [
  "jiff-core",
  "proc-macro2",
@@ -1480,9 +1491,9 @@ dependencies = [
 
 [[package]]
 name = "js-sys"
-version = "0.3.104"
+version = "0.3.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e0c1080212aad755ea003d18543e8768dd432c48819efd73a7bf1e39b7a5a3a"
+checksum = "7883d941dae510fb2d978fc3fe018c71c9e2892fd38854de3e8b92c2e5ad9cc5"
 dependencies = [
  "cfg-if",
  "futures-util",
@@ -1541,15 +1552,15 @@ checksum = "f9f8bd3e56ce4dfc153cf470fffbfa98c7620958b312ca5c3a4b8d5181fd13c6"
 
 [[package]]
 name = "mail-builder"
-version = "0.5.0"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c942e8a4b83f9351236c1e531ea9fa0237913d63c7fc36818430e0128a1ddf3"
+checksum = "ccbc27cb02a58a311a404769a22f5abf63fe3173b290d80be7c534f9c7023151"
 
 [[package]]
 name = "mail-parser"
-version = "0.11.8"
+version = "0.11.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b3a9080c1fb8190e232df37a10aa1b3d6b08be084e537069913f025e0ce86c5"
+checksum = "4ec00bda90c6e645a54506c630c2820cd6b1890cfd2b0a169b50f74b2b8c7c86"
 dependencies = [
  "hashify",
 ]
@@ -1574,9 +1585,9 @@ checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
 
 [[package]]
 name = "miniz_oxide"
-version = "0.8.9"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
+checksum = "b63fbc4a50860e98e7b2aa7804ded1db5cbc3aff9193adaff57a6931bf7c4b4c"
 dependencies = [
  "adler2",
  "simd-adler32",
@@ -1584,9 +1595,9 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "1.2.2"
+version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30d65c71f1ce40ab09135ce117d742b9f8a19ff91a41a8b57ed50bc2de59c427"
+checksum = "4b18443e9c262bfe8fa82f51666e2642c53393f7e5c27b3e1aeab922cff5b9d8"
 dependencies = [
  "libc",
  "wasi",
@@ -1836,9 +1847,9 @@ checksum = "05c8b63e8d9609db387f0324918f81d68fe27748f084ef092fb35954d0539a85"
 
 [[package]]
 name = "portable-atomic-util"
-version = "0.2.7"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2a106d1259c23fac8e543272398ae0e3c0b8d33c88ed73d0cc71b0f1d902618"
+checksum = "10ab3eb7f3becc3a1cbc4f2c6f20267996cfc1a6467a873763411b136a122715"
 dependencies = [
  "portable-atomic",
 ]
@@ -1910,9 +1921,9 @@ dependencies = [
 
 [[package]]
 name = "psl"
-version = "2.1.226"
+version = "2.1.238"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7bc88482eea924ca3a2f56a547454169af58deef35567965eb4fc2392a834841"
+checksum = "2e6aa2cd4e8e062e78ac5d7df6206e2f8e39b624f658efd6f34f9aa1928ac5da"
 dependencies = [
  "psl-types",
 ]
@@ -1965,9 +1976,9 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.10.2"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7f5fa3a058cd35567ef9bfa5e75732bee0f9e4c55fa90477bef2dfcdbc4be80"
+checksum = "65c9fb96cbc91e3478eaae79a69fcd3f1ae4ad052e471fe6732fff548984b4af"
 dependencies = [
  "chacha20",
  "getrandom 0.4.3",
@@ -2005,7 +2016,7 @@ version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
- "bitflags 2.13.1",
+ "bitflags 2.13.2",
 ]
 
 [[package]]
@@ -2025,7 +2036,7 @@ checksum = "92ecd8964f8453721699a1ed72037b0db49ce2f5a5138486ee89bed6f67cdf3a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -2087,7 +2098,7 @@ version = "0.40.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "23f2a97da3e3873c73cb2a2e71b35c40ff95e0b1eefa8d72d8499a6928c3b5b3"
 dependencies = [
- "bitflags 2.13.1",
+ "bitflags 2.13.2",
  "fallible-iterator",
  "fallible-streaming-iterator",
  "hashlink",
@@ -2113,11 +2124,11 @@ dependencies = [
 
 [[package]]
 name = "rustix"
-version = "1.1.4"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
+checksum = "891efababe418670775f199f0d233d84843c227a0949a883ce15b37c78d6629d"
 dependencies = [
- "bitflags 2.13.1",
+ "bitflags 2.13.2",
  "errno",
  "libc",
  "linux-raw-sys",
@@ -2126,9 +2137,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.23.43"
+version = "0.23.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0283386ce02abc0151e1761d08802dfe86c173b0b494af5cbc086574e453da06"
+checksum = "0d41d731c7d2f962d1ccc364cec258de3c0e93b38c2fb3ba97ac74513048d634"
 dependencies = [
  "aws-lc-rs",
  "log",
@@ -2163,9 +2174,9 @@ dependencies = [
 
 [[package]]
 name = "rustls-platform-verifier"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26d1e2536ce4f35f4846aa13bff16bd0ff40157cdb14cc056c7b14ba41233ba0"
+checksum = "1167586491e2b18b8bfbb293e8180ec17c201c4f076d7cb3070ca964e7598f98"
 dependencies = [
  "core-foundation",
  "core-foundation-sys",
@@ -2184,9 +2195,9 @@ dependencies = [
 
 [[package]]
 name = "rustls-platform-verifier-android"
-version = "0.1.1"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f87165f0995f63a9fbeea62b64d10b4d9d8e78ec6d7d51fb2125fda7bb36788f"
+checksum = "eec689c0bc40ff2458a5977b6619cb718087084a18e02a131c599b62d05e1a5f"
 
 [[package]]
 name = "rustls-webpki"
@@ -2266,7 +2277,7 @@ version = "3.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
 dependencies = [
- "bitflags 2.13.1",
+ "bitflags 2.13.2",
  "core-foundation",
  "core-foundation-sys",
  "libc",
@@ -2316,7 +2327,7 @@ checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -2340,7 +2351,7 @@ checksum = "8d3b1629de253c70a0508c3899572da79ca359fdab27c7920ff00406df418906"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -2357,16 +2368,16 @@ dependencies = [
 
 [[package]]
 name = "serde_with"
-version = "3.22.0"
+version = "3.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee78f1fbe43ac4a0e47aadb3dbd357b69eb0d3793e948624cd03dd2750ab1c0a"
+checksum = "df9adc193c780ef8f159aee8b61e2d5801aaa555e6eb0947fe45530ec506296f"
 dependencies = [
- "base64 0.22.1",
+ "base64 0.23.1",
  "bs58",
  "chrono",
  "hex",
  "indexmap 1.9.3",
- "indexmap 2.14.0",
+ "indexmap 2.14.2",
  "jiff",
  "schemars 0.9.0",
  "schemars 1.2.2",
@@ -2378,14 +2389,14 @@ dependencies = [
 
 [[package]]
 name = "serde_with_macros"
-version = "3.22.0"
+version = "3.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8705578779c2b6bd90d84d66eb2e206b708b1a4d7b9f17641b293545bf1c7e46"
+checksum = "3e17bbc68e28663bbbb90df47e058aa7eda4fb445b89fe70457bb94fbccf6e49"
 dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -2440,9 +2451,9 @@ checksum = "bbbb5d9659141646ae647b42fe094daf6c6192d1620870b449d9557f748b2daa"
 
 [[package]]
 name = "siphasher"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ee5873ec9cce0195efcb7a4e9507a04cd49aec9c83d0389df45b1ef7ba2e649"
+checksum = "33f4fe9184a62d842c9ef383018f3306d8ba224fd9d836f56d7288308847c256"
 
 [[package]]
 name = "slab"
@@ -2452,9 +2463,9 @@ checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5"
 
 [[package]]
 name = "smallvec"
-version = "1.15.2"
+version = "1.16.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
+checksum = "f9395f0f0eee849a9b707b2f06bb92a6a422090e2123bb2ef8e87a0e61892a8e"
 
 [[package]]
 name = "socket2"
@@ -2532,9 +2543,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "3.0.4"
+version = "3.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6275cddf4610d1775e6d1fe9469b2e77d0f39fd98fb7450901b821e0c53649f"
+checksum = "8593e8e72159ed2257d083c7a454a85cbf854f37a0966d8d483aff8c8a3ebcee"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2549,13 +2560,13 @@ checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
 
 [[package]]
 name = "synstructure"
-version = "0.13.2"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
+checksum = "901704edd0dfe137f1987838ee4f259e4e063c31371bdb423f7ae38ec6f77f02"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -2604,22 +2615,22 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.20"
+version = "2.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec86235f5fcc2a73650310756d2ac5b138a5780bbbdfae3eeccec992c435ba4f"
+checksum = "09e52cb86a36cede5cb101bf8908837b3e4c6e5e59fe7fd85c23fb56200d189e"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.20"
+version = "2.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc04cd3e1236dd4a98afca4569f2deb3f120e5422a4023be2cb683f8486292af"
+checksum = "fe5197923287db20a58125f0bc85c062f7f2c892de97b18c356f9efb14b28524"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
@@ -2664,18 +2675,9 @@ dependencies = [
 
 [[package]]
 name = "tinyvec"
-version = "1.12.0"
+version = "1.13.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb4ebadaa0af04fab11ae01eb5f9fdb5f9c5b875506e210e71c07873528baa7f"
+checksum = "fd3ca314f692efd6c868f8408f53fe444634a845f96c028b97d35f6a1f79f0ee"
-dependencies = [
- "tinyvec_macros",
-]
-
-[[package]]
-name = "tinyvec_macros"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
@@ -2702,14 +2704,14 @@ checksum = "78773a2a397f451582ce068015985c33193cf6dea8b74d2a639fe457b2f07b0e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
 [[package]]
 name = "tokio-rustls"
-version = "0.26.4"
+version = "0.26.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1729aa945f29d91ba541258c8df89027d5792d85a8841fb65e8bf0f4ede4ef61"
+checksum = "b0c85f2c3ef0b1cd58b36682f4b17aaa995f0e5db534d85692b4903abce21f67"
 dependencies = [
  "rustls",
  "tokio",
@@ -2788,7 +2790,7 @@ checksum = "ebe5ef63511595f1344e2d5cfa636d973292adc0eec1f0ad45fae9f0851ab1d4"
 dependencies = [
  "futures-core",
  "futures-util",
- "indexmap 2.14.0",
+ "indexmap 2.14.2",
  "pin-project-lite",
  "slab",
  "sync_wrapper",
@@ -2850,9 +2852,9 @@ checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.24"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
+checksum = "d245f478577f809a851594d02313b640fb437e0bb33866753cff937863096954"
 
 [[package]]
 name = "untrusted"
@@ -2862,9 +2864,9 @@ checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
 [[package]]
 name = "ureq"
-version = "3.4.0"
+version = "3.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "972d7902c8735f2695410b8aed7df6ed12a47394aa1c8d7af49f0497b731a94d"
+checksum = "9a7ac20be9b7726e0bbdbf974c059676d9acb1cd414961f570a4e8231cacd7fc"
 dependencies = [
  "base64 0.23.1",
  "cookie_store",
@@ -2882,9 +2884,9 @@ dependencies = [
 
 [[package]]
 name = "ureq-proto"
-version = "0.6.1"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da5f78b09e6941e1a0f2e30e695e4b120377b54d5e0aec11b594bb57b3971613"
+checksum = "f86fd172ccca569e458f61b6bdd6220965a9ef36e672a6852953b51a0e1583be"
 dependencies = [
  "base64 0.23.1",
  "http",
@@ -2925,9 +2927,9 @@ checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
 [[package]]
 name = "uuid"
-version = "1.26.0"
+version = "1.26.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5772d71c9be8a8a6ac2117d949c5b224c1b72241bb611d9a3012edcf8af7812"
+checksum = "2ef6dac1e96601b4fb3acccccff2139741fcb757cb9a36089bf5be91cfb285ce"
 dependencies = [
  "sha1_smol",
 ]
@@ -2936,15 +2938,15 @@ dependencies = [
 name = "vandelay"
 version = "1.0.10"
 dependencies = [
- "base64 0.23.1",
  "blake3",
  "calcard",
  "chrono",
  "chrono-tz",
  "clap",
  "crossbeam-channel",
+ "encodify",
  "flate2",
- "indexmap 2.14.0",
+ "indexmap 2.14.2",
  "mail-parser",
  "mockito",
  "num_cpus",
@@ -3012,9 +3014,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.127"
+version = "0.2.129"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b70935747edd64d89de3efa29d73789b806c15798f8e7dca4d8ac356b50ce70"
+checksum = "9bb54f33acc68fd454578d9820b0bde1a1a3d17aa17bb7b6595806d02886d409"
 dependencies = [
  "cfg-if",
  "once_cell",
@@ -3025,9 +3027,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.127"
+version = "0.2.129"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77775f8f3f7217702089053b94958f8f54061a3f663417df76e19cbdcca29bc1"
+checksum = "2e29d0c35b16e224a7eeb5cd2d25e3e1968fbd65604117b44d3b789d00ee8535"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -3035,22 +3037,22 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.127"
+version = "0.2.129"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e11d33f857dc2fb11b8bc75aee111aa9cbeb12cd9f25efd3d4c2a3dd4e235284"
+checksum = "6f501a8bc3719dba86ef8ae4728879c08001bea749eb1333ac5b91e040e2a6b7"
 dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.127"
+version = "0.2.129"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ef64dbcc55df09c7e5a46182d181c2cfa3e925f3da937ea764728b4bbb9dcbf"
+checksum = "23f0c9c52aa7cd7d77769a4cfe2a9adb1b331f489a41d912ce14513d5ab995c6"
 dependencies = [
  "unicode-ident",
 ]
@@ -3281,30 +3283,30 @@ dependencies = [
 
 [[package]]
 name = "yoke-derive"
-version = "0.8.2"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de844c262c8848816172cef550288e7dc6c7b7814b4ee56b3e1553f275f1858e"
+checksum = "33811428bee40dbceb6d545e95754741d17a6aef9a4849f0fd62e2ba4f412a78"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
  "synstructure",
 ]
 
 [[package]]
 name = "zerocopy"
-version = "0.8.56"
+version = "0.8.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "556764e583adb45a9f8d413c2a147fa7e8d821e48e12b14fd560b607998b75eb"
+checksum = "6df92bf3d9227be3d53173901ddbffac2babc27ae50f397776ffd6dc33f800cb"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.8.56"
+version = "0.8.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2ab42fc20575779bd240faa45f94a74256f755c0fa9e89f0ede20d91d0cdfc1"
+checksum = "ac4f328cf2f05d084e496c3e9c3f33ed0a183656a16e1fcec4d464d8373aec82"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3322,13 +3324,13 @@ dependencies = [
 
 [[package]]
 name = "zerofrom-derive"
-version = "0.1.7"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11532158c46691caf0f2593ea8358fed6bbf68a0315e80aae9bd41fbade684a1"
+checksum = "f75b4683f6c7f45248d4d64056a24298c6281e0993356d7d1b4a1a962ef10d4a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
  "synstructure",
 ]
 
@@ -3368,9 +3370,15 @@ checksum = "34df6fc39dbd26ddc9c10e6a2984476e13acce22e64e4487636ef494369225da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.6",
 ]
 
+[[package]]
+name = "zlib-rs"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b268e58e7c693d7c271f93ffc4ba3b380412554231c85bf61ca7af91042a4112"
+
 [[package]]
 name = "zmij"
 version = "1.0.23"

Cargo.toml

@@ -36,7 +36,7 @@ ureq = { version = "3.3.0", default-features = false, features = ["json", "gzip"
 clap = { version = "4.6.1", features = ["derive"] }
 crossbeam-channel = "0.5.15"
 num_cpus = "1.17.0"
-base64 = "0.23"
+encodify = "1.0"
 mail-parser = "0.11.3"
 calcard = "0.3"
 rustls = { version = "0.23.40", default-features = false, features = ["aws-lc-rs", "std", "tls12", "logging"] }
@@ -56,3 +56,6 @@ testcontainers = { version = "0.28", features = ["blocking"] }
 [profile.dist]
 inherits = "release"
 lto = "thin"
+
+[patch.crates-io]
+encodify = { path = "../encodify" }

src/dav/href.rs

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
+use encodify::hex::decode_pair;
 use url::Url;
 
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
@@ -111,9 +112,9 @@ fn percent_decode(s: &str) -> String {
     while i < bytes.len() {
         if bytes[i] == b'%'
             && i + 2 < bytes.len()
-            && let (Some(h), Some(l)) = (hex_val(bytes[i + 1]), hex_val(bytes[i + 2]))
+            && let Some(byte) = decode_pair(bytes[i + 1], bytes[i + 2])
         {
-            buf.push((h << 4) | l);
+            buf.push(byte);
             i += 3;
             continue;
         }
@@ -126,15 +127,6 @@ fn percent_decode(s: &str) -> String {
     }
 }
 
-fn hex_val(b: u8) -> Option<u8> {
-    match b {
-        b'0'..=b'9' => Some(b - b'0'),
-        b'a'..=b'f' => Some(b - b'a' + 10),
-        b'A'..=b'F' => Some(b - b'A' + 10),
-        _ => None,
-    }
-}
-
 fn percent_encode_safe(s: &str) -> String {
     let mut out = String::with_capacity(s.len());
     for byte in s.bytes() {

src/exchange_ews/client.rs

@@ -9,8 +9,6 @@ use std::sync::Mutex;
 use std::sync::atomic::{AtomicU8, AtomicU64, Ordering};
 use std::time::{Duration, Instant};
 
-use base64::Engine;
-use base64::engine::general_purpose::STANDARD;
 use ureq::Agent;
 use ureq::config::{Config, RedirectAuthHeaders};
 use ureq::tls::{RootCerts, TlsConfig};
@@ -168,14 +166,11 @@ impl EwsClient {
     }
 
     fn auth_header(&self) -> String {
-        let auth = self.inner.auth.lock().ok().map(|g| g.clone());
+        self.inner
-        match auth {
+            .auth
-            Some(Auth::Basic { user, password }) => {
+            .lock()
-                format!("Basic {}", STANDARD.encode(format!("{user}:{password}")))
+            .map(|auth| auth.header_value())
-            }
+            .unwrap_or_default()
-            Some(Auth::Bearer { token }) => format!("Bearer {token}"),
-            None => String::new(),
-        }
     }
 
     fn anchor_header(&self) -> Option<String> {

src/exchange_ews/oauth.rs

@@ -7,8 +7,7 @@
 use std::io::{self, Write};
 use std::time::Duration;
 
-use base64::Engine;
+use encodify::base64::{Base64, Padding, URL_SAFE};
-use base64::engine::general_purpose::URL_SAFE_NO_PAD;
 use serde_json::Value;
 use ureq::config::Config;
 use ureq::tls::{RootCerts, TlsConfig};
@@ -19,6 +18,8 @@ pub const SCOPE_APP_ONLY: &str = "https://outlook.office365.com/.default";
 pub const SCOPE_DELEGATED: &str =
     "https://outlook.office365.com/EWS.AccessAsUser.All offline_access";
 
+const JWT_SEGMENT: Base64 = URL_SAFE.with_padding(Padding::Optional).any_alphabet();
+
 #[derive(Debug, Clone)]
 pub struct AcquiredToken {
     pub access_token: String,
@@ -81,11 +82,7 @@ pub fn decode_jwt_claims(token: &str) -> Option<JwtClaims> {
     let mut parts = token.split('.');
     let _header = parts.next()?;
     let payload = parts.next()?;
-    let bytes = URL_SAFE_NO_PAD
+    let bytes = JWT_SEGMENT.decode(payload).ok()?;
-        .decode(payload)
-        .or_else(|_| base64::engine::general_purpose::STANDARD_NO_PAD.decode(payload))
-        .or_else(|_| base64::engine::general_purpose::STANDARD.decode(payload))
-        .ok()?;
     let value: Value = serde_json::from_slice(&bytes).ok()?;
     Some(JwtClaims {
         tenant_id: value.get("tid").and_then(Value::as_str).map(str::to_owned),
@@ -329,7 +326,7 @@ fn urlencode(s: &str) -> String {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use base64::engine::general_purpose::URL_SAFE_NO_PAD;
+    use encodify::base64::{STANDARD, STANDARD_NO_PAD, URL_SAFE_NO_PAD};
 
     fn make_jwt(tid: &str, upn: &str, exp: u64) -> String {
         let header = URL_SAFE_NO_PAD.encode(b"{\"alg\":\"none\"}");
@@ -347,6 +344,19 @@ mod tests {
         assert_eq!(claims.exp, Some(9999999999));
     }
 
+    #[test]
+    fn jwt_payload_decodes_in_either_alphabet_with_or_without_padding() {
+        let claims = r#"{"tid":"t-3","upn":"??>>@xy","exp":1}"#;
+        for engine in [URL_SAFE_NO_PAD, URL_SAFE, STANDARD_NO_PAD, STANDARD] {
+            let token = format!("h.{}.s", engine.encode(claims));
+            let decoded = decode_jwt_claims(&token).unwrap();
+            assert_eq!(decoded.upn.as_deref(), Some("??>>@xy"), "{token}");
+        }
+        assert!(decode_jwt_claims("h.eyJ0aWQiOiJ0LTMifQ.s").is_some());
+        assert!(decode_jwt_claims("h.eyJ0aWQiOiJ0LTMifQ=.s").is_none());
+        assert!(decode_jwt_claims("h.eyJ0 aWQiOiJ0LTMifQ.s").is_none());
+    }
+
     #[test]
     fn malformed_token_returns_none() {
         assert!(decode_jwt_claims("garbage").is_none());

src/exchange_graph/oauth.rs

@@ -7,8 +7,7 @@
 use std::io::{self, Write};
 use std::time::{Duration, Instant};
 
-use base64::Engine;
+use encodify::base64::{Base64, Padding, URL_SAFE};
-use base64::engine::general_purpose::URL_SAFE_NO_PAD;
 use serde_json::Value;
 use ureq::config::Config;
 use ureq::tls::{RootCerts, TlsConfig};
@@ -18,6 +17,8 @@ use crate::exchange_graph::error::GraphError;
 pub const SCOPES: &str =
     "offline_access User.Read Mail.Read MailboxSettings.Read Calendars.Read Contacts.Read";
 
+const JWT_SEGMENT: Base64 = URL_SAFE.with_padding(Padding::Optional).any_alphabet();
+
 pub fn default_authority(tenant: &str) -> String {
     format!("https://login.microsoftonline.com/{tenant}")
 }
@@ -53,11 +54,7 @@ pub fn decode_jwt_claims(token: &str) -> Option<JwtClaims> {
     let mut parts = token.split('.');
     let _header = parts.next()?;
     let payload = parts.next()?;
-    let bytes = URL_SAFE_NO_PAD
+    let bytes = JWT_SEGMENT.decode(payload).ok()?;
-        .decode(payload)
-        .or_else(|_| base64::engine::general_purpose::STANDARD_NO_PAD.decode(payload))
-        .or_else(|_| base64::engine::general_purpose::STANDARD.decode(payload))
-        .ok()?;
     let value: Value = serde_json::from_slice(&bytes).ok()?;
     Some(JwtClaims {
         tenant_id: value.get("tid").and_then(Value::as_str).map(str::to_owned),
@@ -420,6 +417,7 @@ where
 #[cfg(test)]
 mod tests {
     use super::*;
+    use encodify::base64::{STANDARD, STANDARD_NO_PAD, URL_SAFE_NO_PAD};
 
     fn make_jwt(tid: &str, upn: &str, exp: u64) -> String {
         let header = URL_SAFE_NO_PAD.encode(b"{\"alg\":\"none\"}");
@@ -437,6 +435,19 @@ mod tests {
         assert_eq!(claims.exp, Some(9999999999));
     }
 
+    #[test]
+    fn jwt_payload_decodes_in_either_alphabet_with_or_without_padding() {
+        let claims = r#"{"tid":"t-3","upn":"??>>@xy","exp":1}"#;
+        for engine in [URL_SAFE_NO_PAD, URL_SAFE, STANDARD_NO_PAD, STANDARD] {
+            let token = format!("h.{}.s", engine.encode(claims));
+            let decoded = decode_jwt_claims(&token).unwrap();
+            assert_eq!(decoded.upn.as_deref(), Some("??>>@xy"), "{token}");
+        }
+        assert!(decode_jwt_claims("h.eyJ0aWQiOiJ0LTMifQ.s").is_some());
+        assert!(decode_jwt_claims("h.eyJ0aWQiOiJ0LTMifQ=.s").is_none());
+        assert!(decode_jwt_claims("h.eyJ0 aWQiOiJ0LTMifQ.s").is_none());
+    }
+
     #[test]
     fn malformed_token_returns_none() {
         assert!(decode_jwt_claims("garbage").is_none());

src/imap/client.rs

@@ -8,9 +8,6 @@ use std::collections::BTreeSet;
 use std::io::{BufReader, Read, Write};
 use std::time::Instant;
 
-use base64::Engine;
-use base64::engine::general_purpose::STANDARD as BASE64;
-
 use super::command::{self, CommandBuilder};
 use super::error::{ImapError, NoError};
 use super::response::{Response, Status, StatusLine, Untagged, parse_response};
@@ -201,9 +198,8 @@ impl ImapClient {
         payload.extend_from_slice(authcid.as_bytes());
         payload.push(0);
         payload.extend_from_slice(password.as_bytes());
-        let encoded = BASE64.encode(&payload);
         if self.has_capability("SASL-IR") {
-            let cmd = command::authenticate_with_ir("PLAIN", &encoded);
+            let cmd = command::authenticate_with_ir("PLAIN", &payload);
             return match self.run_collect(&cmd) {
                 Ok(_) => Ok(()),
                 Err(ImapError::No(no)) if no.is_auth_failed() => {
@@ -218,9 +214,7 @@ impl ImapClient {
             let resp = parse_response(&mut self.reader)?;
             match resp {
                 Response::Continuation(_) => {
-                    let mut line = encoded.clone().into_bytes();
+                    self.write_all(&command::sasl_response(&payload))?;
-                    line.extend_from_slice(b"\r\n");
-                    self.write_all(&line)?;
                 }
                 Response::Tagged { tag: t, line } if t == tag => {
                     self.update_capabilities_from_code(&line);
@@ -260,9 +254,8 @@ impl ImapClient {
     }
 
     fn drive_bearer_sasl(&mut self, mechanism: &str, payload: &[u8]) -> Result<(), ImapError> {
-        let encoded = BASE64.encode(payload);
         if self.has_capability("SASL-IR") {
-            let cmd = command::authenticate_with_ir(mechanism, &encoded);
+            let cmd = command::authenticate_with_ir(mechanism, payload);
             return match self.run_collect(&cmd) {
                 Ok(_) => Ok(()),
                 Err(ImapError::No(no)) if no.is_auth_failed() => {
@@ -281,9 +274,7 @@ impl ImapClient {
                     if sent {
                         self.write_all(b"\r\n")?;
                     } else {
-                        let mut line = encoded.clone().into_bytes();
+                        self.write_all(&command::sasl_response(payload))?;
-                        line.extend_from_slice(b"\r\n");
-                        self.write_all(&line)?;
                         sent = true;
                     }
                 }

src/imap/command.rs

@@ -6,6 +6,11 @@
 
 use std::fmt::Write as _;
 
+use encodify::base64::STANDARD;
+
+const AUTHENTICATE: &str = "AUTHENTICATE ";
+const CRLF: &[u8] = b"\r\n";
+
 pub struct CommandBuilder {
     next_tag: u32,
 }
@@ -84,8 +89,22 @@ pub fn authenticate(mechanism: &str) -> String {
     format!("AUTHENTICATE {mechanism}")
 }
 
-pub fn authenticate_with_ir(mechanism: &str, initial_response: &str) -> String {
+pub fn authenticate_with_ir(mechanism: &str, initial_response: &[u8]) -> String {
-    format!("AUTHENTICATE {mechanism} {initial_response}")
+    let mut out = String::with_capacity(
+        AUTHENTICATE.len() + mechanism.len() + 1 + STANDARD.encoded_len(initial_response.len()),
+    );
+    out.push_str(AUTHENTICATE);
+    out.push_str(mechanism);
+    out.push(' ');
+    STANDARD.encode_append(initial_response, &mut out);
+    out
+}
+
+pub fn sasl_response(response: &[u8]) -> Vec<u8> {
+    let mut line = Vec::with_capacity(STANDARD.encoded_len(response.len()) + CRLF.len());
+    STANDARD.encode_append(response, &mut line);
+    line.extend_from_slice(CRLF);
+    line
 }
 
 pub fn capability() -> &'static str {
@@ -282,6 +301,24 @@ mod tests {
         assert_eq!(b.next_tag(), "A0003");
     }
 
+    #[test]
+    fn authenticate_with_ir_appends_the_base64_initial_response() {
+        assert_eq!(
+            authenticate_with_ir("PLAIN", b"\0foo\0bar"),
+            "AUTHENTICATE PLAIN AGZvbwBiYXI="
+        );
+        assert_eq!(
+            authenticate_with_ir("XOAUTH2", b""),
+            "AUTHENTICATE XOAUTH2 "
+        );
+    }
+
+    #[test]
+    fn sasl_response_is_base64_with_crlf() {
+        assert_eq!(sasl_response(b"\0foo\0bar"), b"AGZvbwBiYXI=\r\n");
+        assert_eq!(sasl_response(b""), b"\r\n");
+    }
+
     #[test]
     fn build_appends_crlf() {
         let mut b = CommandBuilder::new();

src/imap/name.rs

@@ -4,10 +4,11 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
+use encodify::utf7::{self, Utf7};
+
 use super::error::ImapError;
 
-const MODIFIED_UTF7_ALPHABET: &[u8] =
+const RECEIVED_NAME: Utf7 = utf7::IMAP.lenient();
-    b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,";
 
 pub fn canonicalise_inbox(name: &str) -> String {
     if name.eq_ignore_ascii_case("INBOX") {
@@ -22,145 +23,17 @@ pub fn decode_mailbox_name(input: &str) -> Result<String, ImapError> {
 }
 
 pub fn decode_mailbox_name_with(input: &str, utf8_accept: bool) -> Result<String, ImapError> {
-    if utf8_accept {
+    if utf8_accept || ends_in_open_shift(input) {
         return Ok(input.to_owned());
     }
-    if input.is_ascii() && !input.contains('&') {
+    RECEIVED_NAME
-        return Ok(input.to_owned());
+        .decode(input)
-    }
+        .map_err(|e| ImapError::Parse(format!("modified UTF-7 mailbox name: {e}")))
-    let bytes = input.as_bytes();
-    let mut out = String::with_capacity(input.len());
-    let mut i = 0;
-    while i < bytes.len() {
-        if bytes[i] != b'&' {
-            let start = i;
-            while i < bytes.len() && bytes[i] != b'&' {
-                i += 1;
-            }
-            out.push_str(&input[start..i]);
-            continue;
-        }
-        if i + 1 < bytes.len() && bytes[i + 1] == b'-' {
-            out.push('&');
-            i += 2;
-            continue;
-        }
-        let mut end = i + 1;
-        while end < bytes.len() && bytes[end] != b'-' {
-            end += 1;
-        }
-        if end == bytes.len() {
-            return Err(ImapError::Parse(
-                "unterminated modified UTF-7 sequence".into(),
-            ));
-        }
-        let encoded = &bytes[i + 1..end];
-        let decoded = decode_b64_modified(encoded)?;
-        let u16s: Vec<u16> = decoded
-            .chunks(2)
-            .filter(|c| c.len() == 2)
-            .map(|c| u16::from_be_bytes([c[0], c[1]]))
-            .collect();
-        let s = String::from_utf16(&u16s).map_err(|e| ImapError::Parse(format!("utf-16: {e}")))?;
-        out.push_str(&s);
-        i = end + 1;
-    }
-    Ok(out)
 }
 
-pub fn alternate_mailbox_name(input: &str, utf8_accept: bool) -> Option<String> {
+fn ends_in_open_shift(name: &str) -> bool {
-    let primary = encode_mailbox_name_with(input, utf8_accept);
+    name.rsplit_once('&')
-    let alternate = encode_mailbox_name_with(input, !utf8_accept);
+        .is_some_and(|(_, tail)| !tail.is_empty() && !tail.contains('-'))
-    if alternate == primary {
-        None
-    } else {
-        Some(alternate)
-    }
-}
-
-pub fn encode_mailbox_name(input: &str) -> String {
-    encode_mailbox_name_with(input, false)
-}
-
-pub fn encode_mailbox_name_with(input: &str, utf8_accept: bool) -> String {
-    if utf8_accept {
-        return input.to_owned();
-    }
-    let mut out = String::with_capacity(input.len());
-    let mut pending: Vec<u16> = Vec::new();
-    let flush = |pending: &mut Vec<u16>, out: &mut String| {
-        if pending.is_empty() {
-            return;
-        }
-        out.push('&');
-        let mut raw = Vec::with_capacity(pending.len() * 2);
-        for w in pending.iter() {
-            raw.extend_from_slice(&w.to_be_bytes());
-        }
-        out.push_str(&encode_b64_modified(&raw));
-        out.push('-');
-        pending.clear();
-    };
-    for c in input.chars() {
-        let cp = c as u32;
-        if c == '&' {
-            flush(&mut pending, &mut out);
-            out.push_str("&-");
-        } else if (0x20..=0x7E).contains(&cp) {
-            flush(&mut pending, &mut out);
-            out.push(c);
-        } else {
-            let mut buf = [0u16; 2];
-            let units = c.encode_utf16(&mut buf);
-            pending.extend_from_slice(units);
-        }
-    }
-    flush(&mut pending, &mut out);
-    out
-}
-
-fn decode_b64_modified(bytes: &[u8]) -> Result<Vec<u8>, ImapError> {
-    let mut out = Vec::with_capacity(bytes.len() * 3 / 4);
-    let mut acc: u32 = 0;
-    let mut bits: u32 = 0;
-    for &b in bytes {
-        let v = match MODIFIED_UTF7_ALPHABET.iter().position(|&x| x == b) {
-            Some(idx) => idx as u32,
-            None => {
-                return Err(ImapError::Parse(format!(
-                    "invalid modified UTF-7 byte {b:#04x}"
-                )));
-            }
-        };
-        acc = (acc << 6) | v;
-        bits += 6;
-        if bits >= 8 {
-            bits -= 8;
-            let byte = ((acc >> bits) & 0xFF) as u8;
-            out.push(byte);
-        }
-    }
-    Ok(out)
-}
-
-fn encode_b64_modified(bytes: &[u8]) -> String {
-    let mut out = String::with_capacity(bytes.len() * 4 / 3 + 1);
-    let mut acc: u32 = 0;
-    let mut bits: u32 = 0;
-    for &b in bytes {
-        acc = (acc << 8) | b as u32;
-        bits += 8;
-        while bits >= 6 {
-            bits -= 6;
-            let idx = ((acc >> bits) & 0x3F) as usize;
-            out.push(MODIFIED_UTF7_ALPHABET[idx] as char);
-        }
-    }
-    if bits > 0 {
-        let idx = ((acc << (6 - bits)) & 0x3F) as usize;
-        out.push(MODIFIED_UTF7_ALPHABET[idx] as char);
-    }
-    out
 }
 
 #[cfg(test)]
@@ -186,27 +59,52 @@ mod tests {
     }
 
     #[test]
-    fn unterminated_sequence_errors() {
+    fn raw_ampersand_without_a_closing_dash_keeps_the_name_verbatim() {
-        let err = decode_mailbox_name("&ZeVnLIqe").unwrap_err();
+        for name in [
+            "R&D",
+            "AT&T",
+            "Tom&Jerry",
+            "A&-B&C",
+            "R&D Team",
+            "&ZeVnLIqe",
+            "Envoy&AOk",
+        ] {
+            assert_eq!(decode_mailbox_name(name).unwrap(), name);
+        }
+    }
+
+    #[test]
+    fn trailing_lone_ampersand_is_literal() {
+        assert_eq!(decode_mailbox_name("Sales&").unwrap(), "Sales&");
+        assert_eq!(decode_mailbox_name("&AOk-s&").unwrap(), "és&");
+        assert_eq!(decode_mailbox_name("&").unwrap(), "&");
+    }
+
+    #[test]
+    fn encoded_name_with_a_later_escaped_ampersand_decodes() {
+        assert_eq!(decode_mailbox_name("Envoy&AOk-s").unwrap(), "Envoyés");
+        assert_eq!(decode_mailbox_name("&AOk-/R&-D").unwrap(), "é/R&D");
+    }
+
+    #[test]
+    fn byte_outside_the_alphabet_inside_a_shift_errors() {
+        for name in ["&AOk.s-", "&AOk&-", "&AOké-"] {
+            let err = decode_mailbox_name(name).unwrap_err();
+            assert!(matches!(err, ImapError::Parse(_)), "{name}: {err:?}");
+        }
+    }
+
+    #[test]
+    fn unpaired_surrogate_errors() {
+        let err = decode_mailbox_name("&2D0-").unwrap_err();
         assert!(matches!(err, ImapError::Parse(_)));
     }
 
     #[test]
-    fn ascii_passes_through_encode() {
+    fn encoded_printable_ascii_and_leftover_bits_are_accepted() {
-        assert_eq!(encode_mailbox_name("INBOX"), "INBOX");
+        assert_eq!(decode_mailbox_name("&AGE-").unwrap(), "a");
-        assert_eq!(encode_mailbox_name("Sent Items"), "Sent Items");
+        assert_eq!(decode_mailbox_name("&AOl-").unwrap(), "é");
-    }
+        assert_eq!(decode_mailbox_name("&AOk-&AOk-").unwrap(), "éé");
-
-    #[test]
-    fn literal_amp_encodes_to_amp_dash() {
-        assert_eq!(encode_mailbox_name("R&D"), "R&-D");
-        assert_eq!(encode_mailbox_name("&"), "&-");
-    }
-
-    #[test]
-    fn non_ascii_encode_japanese() {
-        let encoded = encode_mailbox_name("~peter/mail/日本語/台北");
-        assert_eq!(encoded, "~peter/mail/&ZeVnLIqe-/&U,BTFw-");
     }
 
     #[test]
@@ -220,7 +118,7 @@ mod tests {
             "INBOX.Projects.Alpha",
             "Junk E-mail",
         ] {
-            let enc = encode_mailbox_name(s);
+            let enc = utf7::IMAP.encode(s);
             let dec = decode_mailbox_name(&enc).unwrap();
             assert_eq!(dec, s, "roundtrip failed for {s:?}, enc={enc:?}");
         }
@@ -247,34 +145,14 @@ mod tests {
     #[test]
     fn raw_utf8_name_round_trips_through_encode() {
         for s in ["Envoyés", "Gönderilmiş Postalar", "Çöp kutusu"] {
-            assert_eq!(decode_mailbox_name(&encode_mailbox_name(s)).unwrap(), s);
+            assert_eq!(decode_mailbox_name(&utf7::IMAP.encode(s)).unwrap(), s);
             assert_eq!(decode_mailbox_name(s).unwrap(), s);
         }
     }
 
-    #[test]
-    fn alternate_encoding_offered_only_for_non_ascii_names() {
-        assert_eq!(
-            alternate_mailbox_name("Envoyés", false).as_deref(),
-            Some("Envoyés")
-        );
-        assert_eq!(
-            alternate_mailbox_name("Envoyés", true).as_deref(),
-            Some("Envoy&AOk-s")
-        );
-        assert_eq!(alternate_mailbox_name("INBOX", false), None);
-        assert_eq!(alternate_mailbox_name("Sent Items", true), None);
-    }
-
     #[test]
     fn utf8_accept_skips_mutf7_decode_so_ampersand_passes_through() {
         assert_eq!(decode_mailbox_name_with("R&D", true).unwrap(), "R&D");
         assert_eq!(decode_mailbox_name_with("日本語", true).unwrap(), "日本語");
     }
-
-    #[test]
-    fn utf8_accept_skips_mutf7_encode_so_input_passes_through() {
-        assert_eq!(encode_mailbox_name_with("日本語", true), "日本語");
-        assert_eq!(encode_mailbox_name_with("R&D", true), "R&D");
-    }
 }

src/jmap/blob.rs

@@ -4,8 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
-use base64::Engine;
+use encodify::base64::STANDARD;
-use base64::engine::general_purpose::STANDARD;
 use serde_json::{Map, Value};
 
 use crate::jmap::error::JmapError;
@@ -14,6 +13,7 @@ pub const SENTINEL_KEY: &str = "@blob";
 
 const DEFAULT_MEDIA_TYPE: &str = "application/octet-stream";
 const MEDIA_TYPE_KEYS: [&str; 2] = ["mediaType", "contentType"];
+const DATA_URI_OVERHEAD: usize = "data:;base64,".len();
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub enum InlineShape {
@@ -103,11 +103,13 @@ fn data_uri(map: &Map<String, Value>, bytes: &[u8]) -> String {
         .iter()
         .find_map(|k| map.get(*k).and_then(Value::as_str).and_then(uri_media_type))
         .unwrap_or_else(|| DEFAULT_MEDIA_TYPE.to_owned());
-    let mut uri = String::with_capacity(13 + media_type.len() + bytes.len().div_ceil(3) * 4);
+    let mut uri = String::with_capacity(
+        DATA_URI_OVERHEAD + media_type.len() + STANDARD.encoded_len(bytes.len()),
+    );
     uri.push_str("data:");
     uri.push_str(&media_type);
     uri.push_str(";base64,");
-    STANDARD.encode_string(bytes, &mut uri);
+    STANDARD.encode_append(bytes, &mut uri);
     uri
 }
 

src/jmap/http.rs

@@ -9,8 +9,7 @@ use std::sync::OnceLock;
 use std::sync::atomic::{AtomicU8, AtomicU64, Ordering};
 use std::time::{Duration, Instant, SystemTime};
 
-use base64::Engine;
+use encodify::base64::STANDARD;
-use base64::engine::general_purpose::STANDARD;
 use serde_json::Value;
 use ureq::Agent;
 use ureq::config::{Config, RedirectAuthHeaders};
@@ -27,6 +26,8 @@ const MAX_BODY: u64 = 512 * 1024 * 1024;
 
 const LONG_RETRY_THRESHOLD: Duration = Duration::from_secs(10);
 
+const BASIC: &str = "Basic ";
+
 #[derive(Debug, Clone)]
 pub enum Auth {
     Basic { user: String, password: String },
@@ -37,7 +38,12 @@ impl Auth {
     pub fn header_value(&self) -> String {
         match self {
             Auth::Basic { user, password } => {
-                format!("Basic {}", STANDARD.encode(format!("{user}:{password}")))
+                let credentials = format!("{user}:{password}");
+                let mut header =
+                    String::with_capacity(BASIC.len() + STANDARD.encoded_len(credentials.len()));
+                header.push_str(BASIC);
+                STANDARD.encode_append(credentials, &mut header);
+                header
             }
             Auth::Bearer { token } => format!("Bearer {token}"),
         }

src/managesieve/client.rs

@@ -7,8 +7,7 @@
 use std::io::{BufRead, BufReader, Read, Write};
 use std::time::Instant;
 
-use base64::Engine;
+use encodify::base64::STANDARD;
-use base64::engine::general_purpose::STANDARD as BASE64;
 
 use crate::imap::transport::{Connector, ImapStream};
 use crate::logging::Logger;
@@ -201,17 +200,17 @@ impl SieveClient {
         payload.extend_from_slice(authcid.as_bytes());
         payload.push(0);
         payload.extend_from_slice(password.as_bytes());
-        let encoded = BASE64.encode(&payload);
+        let encoded = STANDARD.encode(&payload);
         self.send_authenticate("PLAIN", &encoded)
     }
 
     pub fn authenticate_login(&mut self, authcid: &str, password: &str) -> Result<(), SieveError> {
         self.fresh_post_auth_caps = false;
         self.write_all(command::authenticate("LOGIN").as_bytes())?;
-        let user_payload = BASE64.encode(authcid.as_bytes());
+        let user_payload = STANDARD.encode(authcid);
         self.expect_continuation()?;
         self.write_all(command::continuation_payload(&user_payload).as_bytes())?;
-        let pass_payload = BASE64.encode(password.as_bytes());
+        let pass_payload = STANDARD.encode(password);
         self.expect_continuation()?;
         self.write_all(command::continuation_payload(&pass_payload).as_bytes())?;
         let block = read_response(&mut self.reader)?;
@@ -237,7 +236,7 @@ impl SieveClient {
         payload.push_str(token);
         payload.push('\x01');
         payload.push('\x01');
-        let encoded = BASE64.encode(payload.as_bytes());
+        let encoded = STANDARD.encode(&payload);
         self.send_authenticate("OAUTHBEARER", &encoded)
     }
 

src/sync/import_exchange_ews/attachments.rs

@@ -4,8 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
-use base64::Engine;
+use encodify::base64::LENIENT;
-use base64::engine::general_purpose::STANDARD;
 
 use crate::db::blobs;
 use crate::error::Error;
@@ -56,13 +55,12 @@ pub fn fetch_attachments(
         let resp = ctx.client.call(ctx.url, "GetAttachment", &body)?;
         let inline = parse_get_attachment_inline(&resp.body)?;
         for att in inline {
-            let cleaned = strip_ascii_whitespace(att.content_base64.as_bytes());
+            let bytes = LENIENT.decode(&att.content_base64).map_err(|e| {
-            if cleaned.is_empty() {
-                continue;
-            }
-            let bytes = STANDARD.decode(&cleaned).map_err(|e| {
                 EwsError::Malformed(format!("attachment {}: base64: {e}", att.attachment_id))
             })?;
+            if bytes.is_empty() {
+                continue;
+            }
             let media_type = att
                 .content_type
                 .unwrap_or_else(|| "application/octet-stream".to_owned());
@@ -79,25 +77,3 @@ pub fn fetch_attachments(
 pub fn intern_attachment(conn: &rusqlite::Connection, bytes: &[u8]) -> Result<i64, Error> {
     blobs::intern_blob(conn, bytes).map_err(|e| Error::Partial(e.to_string()))
 }
-
-fn strip_ascii_whitespace(input: &[u8]) -> Vec<u8> {
-    let mut out = Vec::with_capacity(input.len());
-    for b in input {
-        if !matches!(b, b' ' | b'\t' | b'\n' | b'\r') {
-            out.push(*b);
-        }
-    }
-    out
-}
-
-#[cfg(test)]
-mod tests {
-    use super::strip_ascii_whitespace;
-
-    #[test]
-    fn strips_whitespace_efficiently() {
-        let input = b"AB CD\nEF\tGH\r\nIJ";
-        let cleaned = strip_ascii_whitespace(input);
-        assert_eq!(cleaned, b"ABCDEFGHIJ");
-    }
-}

src/sync/import_exchange_ews/messages.rs

@@ -4,8 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
-use base64::Engine;
+use encodify::base64::LENIENT;
-use base64::engine::general_purpose::STANDARD;
 use rusqlite::{Connection, params};
 use serde_json::{Value, json};
 
@@ -164,18 +163,15 @@ fn apply_message(
     existing_local_id: Option<i64>,
     counts: &mut TypeCounts,
 ) -> Result<(), Error> {
-    let mime_b64 = match item.mime_content.as_ref() {
+    let Some(mime_b64) = item.mime_content.as_ref() else {
-        Some(s) => s.replace(['\n', '\r', ' ', '\t'], ""),
-        None => {
         counts.skipped += 1;
         ctx.logger.warn(&format!(
             "message {} has no MimeContent; skipping",
             item.id.id
         ));
         return Ok(());
-        }
     };
-    let bytes = match STANDARD.decode(mime_b64.as_bytes()) {
+    let bytes = match LENIENT.decode(mime_b64) {
         Ok(b) => b,
         Err(e) => {
             counts.failed += 1;

src/sync/import_exchange_graph/calendar.rs

@@ -6,6 +6,7 @@
 
 use std::collections::HashMap;
 
+use encodify::base64::STANDARD;
 use rusqlite::{Connection, Transaction, params};
 use serde_json::{Value, json};
 
@@ -32,7 +33,6 @@ fn fetch_event_attachments(
     endpoints: &crate::exchange_graph::api::Endpoints,
     event_id: &str,
 ) -> Vec<EventAttachment> {
-    use base64::Engine;
     let url = endpoints.event_attachments(event_id);
     let Ok(body) = client.get_json_with_prefer(&url, &[]) else {
         return Vec::new();
@@ -50,7 +50,7 @@ fn fetch_event_attachments(
         let Some(encoded) = item.get("contentBytes").and_then(Value::as_str) else {
             continue;
         };
-        let Ok(bytes) = base64::engine::general_purpose::STANDARD.decode(encoded) else {
+        let Ok(bytes) = STANDARD.decode(encoded) else {
             continue;
         };
         if bytes.is_empty() {

src/sync/import_imap/coordinator.rs

@@ -20,7 +20,6 @@ use crate::error::Error;
 use crate::imap::client::{ConnectMode, ImapClient};
 use crate::imap::command;
 use crate::imap::error::ImapError;
-use crate::imap::name::{alternate_mailbox_name, encode_mailbox_name_with};
 use crate::imap::response::{NamespaceEntry, Untagged};
 use crate::imap::retry::{
     BackoffState, Disposition, RetryPolicy, classify, is_negotiation_failure,
@@ -114,28 +113,9 @@ pub(super) fn control_run_collect(
 pub(super) fn select_folder(
     client: &mut ImapClient,
     ctx: &ControlCtx,
-    folder: &str,
+    folder: &ResolvedFolder,
 ) -> Result<crate::imap::CollectedResponse, Error> {
-    let utf8_accept = client.utf8_accept();
+    control_run_collect(client, ctx, &command::select(&folder.wire_name))
-    let wire_name = encode_mailbox_name_with(folder, utf8_accept);
-    let first = control_run_collect(client, ctx, &command::select(&wire_name));
-    let Err(Error::Partial(_)) = &first else {
-        return first;
-    };
-    let Some(alternate) = alternate_mailbox_name(folder, utf8_accept) else {
-        return first;
-    };
-    match control_run_collect(client, ctx, &command::select(&alternate)) {
-        Ok(r) => {
-            log_at(
-                ctx.logger,
-                LEVEL_DEFAULT,
-                &format!("folder {folder:?}: selected with the alternate mailbox-name encoding"),
-            );
-            Ok(r)
-        }
-        Err(_) => first,
-    }
 }
 
 pub(super) fn call_with_retry<F, T>(
@@ -740,7 +720,7 @@ fn reconcile_folder(
         }
     }
 
-    let resp = select_folder(client, control_ctx, &folder.name)?;
+    let resp = select_folder(client, control_ctx, folder)?;
     let mut uidvalidity: u32 = 0;
     let mut uidnext: u32 = 0;
     for u in &resp.untagged {
@@ -826,6 +806,7 @@ fn reconcile_folder(
         for batch in &batches {
             pool.submit(FetchJob {
                 folder: folder.name.clone(),
+                wire_name: folder.wire_name.clone(),
                 uidvalidity,
                 uids: batch.to_vec(),
             });
@@ -1149,7 +1130,7 @@ fn dry_run_summary(
     }
 
     for folder in folders {
-        let select_resp = match select_folder(client, control_ctx, &folder.name) {
+        let select_resp = match select_folder(client, control_ctx, folder) {
             Ok(r) => r,
             Err(e) => {
                 log_at(

src/sync/import_imap/folders.rs

@@ -22,6 +22,7 @@ pub struct FolderStatus {
 #[derive(Debug, Clone)]
 pub struct DiscoveredFolder {
     pub name: String,
+    pub wire_name: String,
     pub delimiter: Option<char>,
     pub attributes: Vec<String>,
     pub subscribed: bool,
@@ -32,6 +33,7 @@ pub struct DiscoveredFolder {
 #[derive(Debug, Clone)]
 pub struct ResolvedFolder {
     pub name: String,
+    pub wire_name: String,
     pub leaf: String,
     pub parent_path: Option<String>,
     pub delimiter: Option<char>,
@@ -85,6 +87,7 @@ pub fn collect_from_list(
                     canonical.clone(),
                     DiscoveredFolder {
                         name: canonical,
+                        wire_name: name.clone(),
                         delimiter: *delimiter,
                         attributes: attributes.clone(),
                         subscribed: false,
@@ -156,6 +159,7 @@ pub fn apply_filters(
         let (leaf, parent_path) = split_parent(&f.name, delim);
         resolved.push(ResolvedFolder {
             name: f.name,
+            wire_name: f.wire_name,
             leaf,
             parent_path,
             delimiter: delim,
@@ -437,6 +441,7 @@ mod tests {
         let mut r = vec![
             ResolvedFolder {
                 name: "Projects/Alpha".into(),
+                wire_name: "Projects/Alpha".into(),
                 leaf: "Alpha".into(),
                 parent_path: Some("Projects".into()),
                 delimiter: Some('/'),
@@ -446,6 +451,7 @@ mod tests {
             },
             ResolvedFolder {
                 name: "INBOX".into(),
+                wire_name: "INBOX".into(),
                 leaf: "INBOX".into(),
                 parent_path: None,
                 delimiter: Some('/'),
@@ -455,6 +461,7 @@ mod tests {
             },
             ResolvedFolder {
                 name: "Projects".into(),
+                wire_name: "Projects".into(),
                 leaf: "Projects".into(),
                 parent_path: None,
                 delimiter: Some('/'),

src/sync/import_imap/pool.rs

@@ -13,7 +13,6 @@ use crossbeam_channel::{Receiver, Sender, unbounded};
 use crate::imap::client::{ConnectMode, ImapClient};
 use crate::imap::command;
 use crate::imap::error::ImapError;
-use crate::imap::name::{alternate_mailbox_name, encode_mailbox_name_with};
 use crate::imap::response::Untagged;
 use crate::imap::retry::{BackoffState, Disposition, RetryPolicy, classify};
 use crate::imap::transport::Connector;
@@ -26,6 +25,7 @@ pub const HARD_CAP: usize = 8;
 
 pub struct FetchJob {
     pub folder: String,
+    pub wire_name: String,
     pub uidvalidity: u32,
     pub uids: Vec<u32>,
 }
@@ -231,16 +231,7 @@ fn run_one_job(
     event_tx: &Sender<FetchEvent>,
 ) -> Result<(), ImapError> {
     if current_folder.as_deref() != Some(job.folder.as_str()) {
-        let utf8_accept = client.utf8_accept();
+        client.run_collect(&command::select(&job.wire_name))?;
-        let wire = encode_mailbox_name_with(&job.folder, utf8_accept);
-        if let Err(e) = client.run_collect(&command::select(&wire)) {
-            match alternate_mailbox_name(&job.folder, utf8_accept) {
-                Some(alternate) if matches!(e, ImapError::No(_)) => {
-                    client.run_collect(&command::select(&alternate))?;
-                }
-                _ => return Err(e),
-            }
-        }
         *current_folder = Some(job.folder.clone());
     }
     let set = command::format_uid_set(&job.uids, true);

src/sync/import_jmap/mapping.rs

@@ -897,6 +897,7 @@ fn opt_format_utc(value: &Option<time::OffsetDateTime>) -> Result<Option<String>
 mod tests {
     use super::*;
     use crate::db::init;
+    use encodify::base64::STANDARD;
     use std::collections::HashMap;
 
     struct MapResolver {
@@ -929,15 +930,12 @@ mod tests {
     }
 
     fn decode_data_uri(value: &Value, media_type: &str) -> Vec<u8> {
-        use base64::Engine;
         let uri = value.as_str().unwrap_or_else(|| panic!("{value} is a URI"));
         let prefix = format!("data:{media_type};base64,");
         let payload = uri
             .strip_prefix(&prefix)
             .unwrap_or_else(|| panic!("{uri} does not start with {prefix}"));
-        base64::engine::general_purpose::STANDARD
+        STANDARD.decode(payload).expect("base64 payload")
-            .decode(payload)
-            .expect("base64 payload")
     }
 
     fn assert_no_blob_id(value: &Value) {

tests/integration/dav_client.rs

@@ -7,8 +7,7 @@
 use std::io;
 use std::time::Duration;
 
-use base64::Engine;
+use encodify::base64::STANDARD as B64;
-use base64::engine::general_purpose::STANDARD as B64;
 use ureq::Agent;
 use ureq::http::{Method, Request};
 

tests/integration/sieve_client.rs

@@ -8,8 +8,7 @@ use std::io::{BufRead, BufReader, Read, Write};
 use std::net::TcpStream;
 use std::time::Duration;
 
-use base64::Engine;
+use encodify::base64::STANDARD as B64;
-use base64::engine::general_purpose::STANDARD as B64;
 
 use super::error::{ContainerError, ContainerResult};
 

tests/integration/stalwart.rs

@@ -9,7 +9,7 @@ use std::process::Command;
 use std::sync::{Arc, OnceLock};
 use std::time::{Duration, Instant};
 
-use base64::Engine;
+use encodify::base64::STANDARD;
 use serde_json::Value;
 use testcontainers::core::{IntoContainerPort, WaitFor};
 use testcontainers::runners::SyncRunner;
@@ -183,8 +183,7 @@ fn basic(user: &str, password: &str) -> String {
     raw.push_str(user);
     raw.push(':');
     raw.push_str(password);
-    format!(
+    let mut header = String::from("Basic ");
-        "Basic {}",
+    STANDARD.encode_append(raw, &mut header);
-        base64::engine::general_purpose::STANDARD.encode(raw.as_bytes())
+    header
-    )
 }

tests/integration/webdav.rs

@@ -6,8 +6,7 @@
 
 use std::time::Duration;
 
-use base64::Engine;
+use encodify::base64::STANDARD as B64;
-use base64::engine::general_purpose::STANDARD as B64;
 use testcontainers::core::{IntoContainerPort, WaitFor};
 use testcontainers::runners::{SyncBuilder, SyncRunner};
 use testcontainers::{Container, GenericBuildableImage, GenericImage, ImageExt};

tests/mock_dav.rs

@@ -1448,8 +1448,7 @@ fn dry_run_writes_nothing_but_emits_per_collection_counts() {
 
 #[test]
 fn dav_source_change_protection_fires_across_users_on_same_root() {
-    use base64::Engine;
+    use encodify::base64::STANDARD;
-    use base64::engine::general_purpose::STANDARD;
     use std::path::PathBuf;
     use vandelay::logging::Logger;
     use vandelay::sync::CommonConfig;

tests/mock_exchange_ews.rs

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
+use encodify::base64::{LENIENT, STANDARD};
 use mockito::Matcher;
 use vandelay::exchange_ews::EwsClient;
 use vandelay::exchange_ews::autodiscover::{DiscoverySource, discover};
@@ -300,8 +301,7 @@ fn http_401_surfaces_as_auth_error() {
 #[test]
 fn mime_content_round_trips_through_base64_decode() {
     let original = b"From: alice@x\r\nSubject: hi\r\n\r\nbody";
-    use base64::Engine;
+    let encoded = STANDARD.encode(original);
-    let encoded = base64::engine::general_purpose::STANDARD.encode(original);
     let body = envelope(&format!(
         "<m:GetItemResponse{NS}><m:ResponseMessages>\
          <m:GetItemResponseMessage ResponseClass=\"Success\">\
@@ -315,10 +315,7 @@ fn mime_content_round_trips_through_base64_decode() {
     let r = parse_response_messages(body.as_bytes(), b"GetItemResponseMessage").unwrap();
     let item = vandelay::exchange_ews::parse::parse_message_item(&r[0].inner_xml).unwrap();
     let s = item.mime_content.unwrap();
-    let cleaned: String = s.chars().filter(|c| !c.is_whitespace()).collect();
+    let bytes = LENIENT.decode(&s).unwrap();
-    let bytes = base64::engine::general_purpose::STANDARD
-        .decode(cleaned.as_bytes())
-        .unwrap();
     assert_eq!(bytes, original);
 }
 

tests/mock_exchange_graph.rs

@@ -6,7 +6,7 @@
 
 use std::sync::Once;
 
-use base64::Engine;
+use encodify::base64::URL_SAFE_NO_PAD;
 use mockito::{Matcher, Server};
 use serde_json::json;
 use vandelay::exchange_graph::api::{Endpoints, collect_all_ids, paged_collect};
@@ -36,7 +36,6 @@ fn url_message_collection(server_url: &str, folder: &str, top: usize) -> String
 }
 
 fn make_jwt(exp: u64, upn: &str) -> String {
-    use base64::engine::general_purpose::URL_SAFE_NO_PAD;
     let header = URL_SAFE_NO_PAD.encode(b"{\"alg\":\"none\"}");
     let claims = format!(r#"{{"tid":"tenant-1","upn":"{upn}","exp":{exp}}}"#);
     let payload = URL_SAFE_NO_PAD.encode(claims.as_bytes());

tests/mock_imap.rs

@@ -12,6 +12,7 @@ use std::sync::atomic::{AtomicU32, Ordering};
 use std::thread;
 use std::time::Duration;
 
+use encodify::base64::STANDARD;
 use rusqlite::Connection;
 use vandelay::db;
 use vandelay::imap::client::{ConnectMode, ImapClient};
@@ -230,7 +231,6 @@ fn authenticate_oauthbearer_sasl_ir() {
 
 #[test]
 fn authenticate_oauthbearer_continuation_payload_uses_gs2_header() {
-    use base64::Engine;
     let server = MockImap::start(|conn| {
         conn.write_line("* OK Hello")?;
         let (tag, _) = conn.read_command()?;
@@ -242,9 +242,7 @@ fn authenticate_oauthbearer_continuation_payload_uses_gs2_header() {
         let mut line = String::new();
         conn.reader.read_line(&mut line)?;
         let payload = line.trim_end_matches(['\r', '\n']).to_owned();
-        let decoded = base64::engine::general_purpose::STANDARD
+        let decoded = STANDARD.decode(&payload).expect("base64");
-            .decode(&payload)
-            .expect("base64");
         let text = std::str::from_utf8(&decoded).unwrap_or("");
         assert!(
             text.starts_with("n,[email protected],"),
@@ -1871,22 +1869,33 @@ fn mutf7_server_gets_the_folder_name_back_as_mutf7() {
 }
 
 #[test]
-fn utf8_name_from_a_server_that_never_enabled_utf8_falls_back_on_select() {
+fn utf8_name_from_a_server_that_never_enabled_utf8_is_selected_as_listed() {
-    let control: Script = Box::new(|conn: &mut MockConn| -> std::io::Result<()> {
+    assert_name_selected_as_listed(FRENCH_SENT_UTF8, FRENCH_SENT_UTF8, "utf8_no_enable");
+}
+
+#[test]
+fn raw_ampersand_name_is_selected_as_listed_not_reencoded() {
+    assert_name_selected_as_listed("R&D", "R&D", "raw_ampersand");
+}
+
+#[test]
+fn modified_utf7_name_is_selected_as_listed() {
+    assert_name_selected_as_listed(FRENCH_SENT_MUTF7, FRENCH_SENT_UTF8, "mutf7_as_listed");
+}
+
+fn assert_name_selected_as_listed(listed: &'static str, stored: &str, archive_name: &str) {
+    let control: Script = Box::new(move |conn: &mut MockConn| -> std::io::Result<()> {
         auth_preamble(conn, "IMAP4rev2 LITERAL+ AUTH=PLAIN")?;
         let (tag, cmd) = conn.read_command()?;
         assert_eq!(cmd, "LIST \"\" \"*\"");
-        conn.write_line(&format!("* LIST () \"/\" \"{FRENCH_SENT_UTF8}\""))?;
+        conn.write_line(&format!("* LIST () \"/\" \"{listed}\""))?;
         conn.write_line(&format!("{tag} OK LIST done"))?;
         let (tag, _) = conn.read_command()?;
         conn.write_line(&format!("{tag} OK LSUB done"))?;
         let (tag, name) = read_select_mailbox(conn)?;
-        assert_eq!(name, FRENCH_SENT_MUTF7);
-        conn.write_line(&format!("{tag} NO [NONEXISTENT] Mailbox does not exist."))?;
-        let (tag, name) = read_select_mailbox(conn)?;
         assert_eq!(
-            name, FRENCH_SENT_UTF8,
+            name, listed,
-            "a refused modified UTF-7 name must be retried as UTF-8"
+            "the name must go back exactly as the server listed it"
         );
         write_select(conn, &tag, 902, 2, 1)?;
         let (tag, cmd) = conn.read_command()?;
@@ -1896,13 +1905,13 @@ fn utf8_name_from_a_server_that_never_enabled_utf8_falls_back_on_select() {
         drain_until_close(conn);
         Ok(())
     });
-    let worker: Script = Box::new(|conn: &mut MockConn| -> std::io::Result<()> {
+    let worker: Script = Box::new(move |conn: &mut MockConn| -> std::io::Result<()> {
         auth_preamble(conn, "IMAP4rev2 LITERAL+ AUTH=PLAIN")?;
         let (tag, name) = read_select_mailbox(conn)?;
-        assert_eq!(name, FRENCH_SENT_MUTF7);
+        assert_eq!(
-        conn.write_line(&format!("{tag} NO [NONEXISTENT] Mailbox does not exist."))?;
+            name, listed,
-        let (tag, name) = read_select_mailbox(conn)?;
+            "the fetch worker must agree with the coordinator"
-        assert_eq!(name, FRENCH_SENT_UTF8);
+        );
         write_select(conn, &tag, 902, 2, 1)?;
         let (tag, _) = conn.read_command()?;
         write_fetch_message(conn, 1, 1, MSG_BODY)?;
@@ -1912,7 +1921,7 @@ fn utf8_name_from_a_server_that_never_enabled_utf8_falls_back_on_select() {
     });
 
     let server = MockImap::start_scripts(vec![control, worker]);
-    let archive = tempfile("utf8_no_enable");
+    let archive = tempfile(archive_name);
     let summary = run_import(&server, "alice", archive.clone(), |_| {}).expect("import");
     let email = summary
         .per_type
@@ -1925,7 +1934,7 @@ fn utf8_name_from_a_server_that_never_enabled_utf8_falls_back_on_select() {
     assert_eq!(
         conn.query_row::<String, _, _>("SELECT name FROM mailboxes", [], |r| r.get(0))
             .unwrap(),
-        FRENCH_SENT_UTF8
+        stored
     );
     let _ = std::fs::remove_file(&archive);
 }

tests/seeder/jmap.rs

@@ -6,7 +6,7 @@
 
 use std::sync::Arc;
 
-use base64::Engine;
+use encodify::base64::STANDARD;
 use serde_json::{Value, json};
 use ureq::Agent;
 use ureq::config::RedirectAuthHeaders;
@@ -43,10 +43,9 @@ fn basic(user: &str, password: &str) -> String {
     raw.push_str(user);
     raw.push(':');
     raw.push_str(password);
-    format!(
+    let mut header = String::from("Basic ");
-        "Basic {}",
+    STANDARD.encode_append(raw, &mut header);
-        base64::engine::general_purpose::STANDARD.encode(raw.as_bytes())
+    header
-    )
 }
 
 impl Jmap {

tests/sync_jmap.rs

@@ -9,6 +9,7 @@ mod seeder;
 
 use std::path::{Path, PathBuf};
 
+use encodify::base64::STANDARD;
 use integration::stalwart::shared as shared_stalwart;
 use rusqlite::Connection;
 use serde_json::{Map, Value, json};
@@ -693,7 +694,6 @@ const ISSUE30_CARD_UID: &str = "vandelay-issue30-card";
 const ISSUE30_EVENT_UID: &str = "vandelay-issue30-event";
 
 fn data_uri_bytes(resource: &Value, uri_key: &str, expect_media_type: &str) -> Vec<u8> {
-    use base64::Engine;
     let uri = resource
         .get(uri_key)
         .and_then(Value::as_str)
@@ -706,9 +706,7 @@ fn data_uri_bytes(resource: &Value, uri_key: &str, expect_media_type: &str) -> V
     let payload = uri
         .strip_prefix(&prefix)
         .unwrap_or_else(|| panic!("{uri_key} is not a {prefix}... data URI: {resource}"));
-    base64::engine::general_purpose::STANDARD
+    STANDARD.decode(payload).expect("base64 payload")
-        .decode(payload)
-        .expect("base64 payload")
 }
 
 #[test]