diff --git a/.gitignore b/.gitignore
index ea8c4bf..7f4b915 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,8 @@
-/target
+# Compiled files and executables
+/target/
+
+# Backup files generated by rustfmt
+**/*.rs.bk
+
+# Default upload directory
+/upload/
diff --git a/Cargo.lock b/Cargo.lock
index 09be4e9..8a92b9d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -37,6 +37,26 @@ dependencies = [
  "trust-dns-resolver",
 ]
 
+[[package]]
+name = "actix-files"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c51e8a9146c12fce92a6e4c24b8c4d9b05268130bfd8d61bc587e822c32ce689"
+dependencies = [
+ "actix-service",
+ "actix-web",
+ "bitflags",
+ "bytes 0.5.6",
+ "derive_more",
+ "futures-core",
+ "futures-util",
+ "log",
+ "mime",
+ "mime_guess",
+ "percent-encoding",
+ "v_htmlescape",
+]
+
 [[package]]
 name = "actix-http"
 version = "2.2.0"
@@ -74,9 +94,9 @@ dependencies = [
  "mime",
  "percent-encoding",
  "pin-project 1.0.7",
- "rand",
+ "rand 0.7.3",
  "regex",
- "serde",
+ "serde 1.0.126",
  "serde_json",
  "serde_urlencoded",
  "sha-1",
@@ -94,6 +114,24 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "actix-multipart"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "774bfeb11b54bf9c857a005b8ab893293da4eaff79261a66a9200dab7f5ab6e3"
+dependencies = [
+ "actix-service",
+ "actix-utils",
+ "actix-web",
+ "bytes 0.5.6",
+ "derive_more",
+ "futures-util",
+ "httparse",
+ "log",
+ "mime",
+ "twoway",
+]
+
 [[package]]
 name = "actix-router"
 version = "0.2.7"
@@ -104,7 +142,7 @@ dependencies = [
  "http",
  "log",
  "regex",
- "serde",
+ "serde 1.0.126",
 ]
 
 [[package]]
@@ -243,7 +281,7 @@ dependencies = [
  "mime",
  "pin-project 1.0.7",
  "regex",
- "serde",
+ "serde 1.0.126",
  "serde_json",
  "serde_urlencoded",
  "socket2",
@@ -278,6 +316,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+
 [[package]]
 name = "async-trait"
 version = "0.1.50"
@@ -324,8 +368,8 @@ dependencies = [
  "log",
  "mime",
  "percent-encoding",
- "rand",
- "serde",
+ "rand 0.7.3",
+ "serde 1.0.126",
  "serde_json",
  "serde_urlencoded",
 ]
@@ -377,12 +421,31 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "buf-min"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa17aa1cf56bdd6bb30518767d00e58019d326f3f05d8c3e0730b549d332ea83"
+dependencies = [
+ "bytes 0.5.6",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c59e7af012c713f529e7a3ee57ce9b31ddd858d4b512923602f74608b009631"
 
+[[package]]
+name = "byte-unit"
+version = "4.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "063197e6eb4b775b64160dedde7a0986bb2836cce140e9492e9e96f28e18bcd8"
+dependencies = [
+ "serde 1.0.126",
+ "utf8-width",
+]
+
 [[package]]
 name = "byteorder"
 version = "1.4.3"
@@ -428,6 +491,33 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "clap"
+version = "2.33.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
+dependencies = [
+ "bitflags",
+ "textwrap",
+ "unicode-width",
+]
+
+[[package]]
+name = "config"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1b9d958c2b1368a663f05538fc1b5975adce1e19f435acceae987aceeeb369"
+dependencies = [
+ "lazy_static",
+ "nom 5.1.2",
+ "rust-ini",
+ "serde 1.0.126",
+ "serde-hjson",
+ "serde_json",
+ "toml",
+ "yaml-rust",
+]
+
 [[package]]
 name = "const_fn"
 version = "0.4.8"
@@ -448,7 +538,7 @@ checksum = "03a5d7b21829bc7b4bf4754a978a241ae54ea55a40f92bb20216e54096f4b951"
 dependencies = [
  "percent-encoding",
  "time",
- "version_check",
+ "version_check 0.9.3",
 ]
 
 [[package]]
@@ -685,7 +775,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "501466ecc8a30d1d3b7fc9229b122b2ce8ed6e9d9223f1138d4babb253e51817"
 dependencies = [
  "typenum",
- "version_check",
+ "version_check 0.9.3",
 ]
 
 [[package]]
@@ -696,7 +786,18 @@ checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
- "wasi",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "wasi 0.10.2+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -828,6 +929,15 @@ dependencies = [
  "winreg",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "284f18f85651fe11e8a991b2adb42cb078325c996ed026d994719efcfca1d54b"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "0.4.7"
@@ -856,6 +966,19 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
+[[package]]
+name = "lexical-core"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6607c62aa161d23d17a9072cc5da0be67cdfc89d3afb1e8d9c842bebc2525ffe"
+dependencies = [
+ "arrayvec",
+ "bitflags",
+ "cfg-if 1.0.0",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.98"
@@ -919,6 +1042,16 @@ version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
+[[package]]
+name = "mime_guess"
+version = "2.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2684d4c2e97d99848d30b324b00c8fcc7e5c897b7cbb5819b09e7c90e8baf212"
+dependencies = [
+ "mime",
+ "unicase",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.4.4"
@@ -982,6 +1115,45 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "nom"
+version = "4.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ad2a91a8e869eeb30b9cb3119ae87773a8f4ae617f41b1eb9c154b2905f7bd6"
+dependencies = [
+ "memchr",
+ "version_check 0.1.5",
+]
+
+[[package]]
+name = "nom"
+version = "5.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffb4262d26ed83a1c0a33a38fe2bb15797329c85770da05e6b828ddb782627af"
+dependencies = [
+ "lexical-core",
+ "memchr",
+ "version_check 0.9.3",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92e5113e9fd4cc14ded8e499429f396a20f98c772a47cc8622a736e1ec843c31"
+dependencies = [
+ "num-traits 0.2.14",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.13.0"
@@ -996,9 +1168,16 @@ dependencies = [
 name = "oops"
 version = "0.1.0"
 dependencies = [
+ "actix-files",
+ "actix-multipart",
  "actix-web",
+ "byte-unit",
+ "config",
  "env_logger",
+ "futures-util",
  "log",
+ "petname",
+ "serde 1.0.126",
 ]
 
 [[package]]
@@ -1047,6 +1226,17 @@ dependencies = [
  "ucd-trie",
 ]
 
+[[package]]
+name = "petname"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9ed8e1c7b7cdd47819f76bbec141b4d4b59bb8ffd26c372cc236c90cd90becc"
+dependencies = [
+ "clap",
+ "itertools",
+ "rand 0.8.4",
+]
+
 [[package]]
 name = "pin-project"
 version = "0.4.28"
@@ -1153,11 +1343,23 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.16",
  "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
+ "rand_chacha 0.2.2",
+ "rand_core 0.5.1",
+ "rand_hc 0.2.0",
+]
+
+[[package]]
+name = "rand"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
+dependencies = [
+ "libc",
+ "rand_chacha 0.3.1",
+ "rand_core 0.6.3",
+ "rand_hc 0.3.1",
 ]
 
 [[package]]
@@ -1167,7 +1369,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.6.3",
 ]
 
 [[package]]
@@ -1176,7 +1388,16 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.16",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+dependencies = [
+ "getrandom 0.2.3",
 ]
 
 [[package]]
@@ -1185,7 +1406,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
 dependencies = [
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
+dependencies = [
+ "rand_core 0.6.3",
 ]
 
 [[package]]
@@ -1224,6 +1454,12 @@ dependencies = [
  "quick-error",
 ]
 
+[[package]]
+name = "rust-ini"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e52c148ef37f8c375d49d5a73aa70713125b7f19095948a923f80afdeb22ec2"
+
 [[package]]
 name = "rustc_version"
 version = "0.2.3"
@@ -1287,6 +1523,12 @@ dependencies = [
  "pest",
 ]
 
+[[package]]
+name = "serde"
+version = "0.8.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dad3f759919b92c3068c696c15c3d17238234498bbdcc80f2c469606f948ac8"
+
 [[package]]
 name = "serde"
 version = "1.0.126"
@@ -1296,6 +1538,18 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde-hjson"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a3a4e0ea8a88553209f6cc6cfe8724ecad22e1acf372793c27d995290fe74f8"
+dependencies = [
+ "lazy_static",
+ "num-traits 0.1.43",
+ "regex",
+ "serde 0.8.23",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.126"
@@ -1315,7 +1569,7 @@ checksum = "799e97dc9fdae36a5c8b8f2cae9ce2ee9fdce2058c57a93e6099d919fd982f79"
 dependencies = [
  "itoa",
  "ryu",
- "serde",
+ "serde 1.0.126",
 ]
 
 [[package]]
@@ -1327,7 +1581,7 @@ dependencies = [
  "form_urlencoded",
  "itoa",
  "ryu",
- "serde",
+ "serde 1.0.126",
 ]
 
 [[package]]
@@ -1387,9 +1641,15 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e113fb6f3de07a243d434a56ec6f186dfd51cb08448239fe7bcae73f87ff28ff"
 dependencies = [
- "version_check",
+ "version_check 0.9.3",
 ]
 
+[[package]]
+name = "static_assertions"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
+
 [[package]]
 name = "stdweb"
 version = "0.4.20"
@@ -1412,7 +1672,7 @@ checksum = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
 dependencies = [
  "proc-macro2",
  "quote",
- "serde",
+ "serde 1.0.126",
  "serde_derive",
  "syn",
 ]
@@ -1426,7 +1686,7 @@ dependencies = [
  "base-x",
  "proc-macro2",
  "quote",
- "serde",
+ "serde 1.0.126",
  "serde_derive",
  "serde_json",
  "sha1",
@@ -1459,6 +1719,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "textwrap"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+dependencies = [
+ "unicode-width",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.26"
@@ -1499,7 +1768,7 @@ dependencies = [
  "standback",
  "stdweb",
  "time-macros",
- "version_check",
+ "version_check 0.9.3",
  "winapi 0.3.9",
 ]
 
@@ -1575,6 +1844,15 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "toml"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
+dependencies = [
+ "serde 1.0.126",
+]
+
 [[package]]
 name = "tracing"
 version = "0.1.26"
@@ -1619,7 +1897,7 @@ dependencies = [
  "idna",
  "lazy_static",
  "log",
- "rand",
+ "rand 0.7.3",
  "smallvec",
  "thiserror",
  "tokio",
@@ -1645,6 +1923,16 @@ dependencies = [
  "trust-dns-proto",
 ]
 
+[[package]]
+name = "twoway"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c57ffb460d7c24cd6eda43694110189030a3d1dfe418416d9468fd1c1d290b47"
+dependencies = [
+ "memchr",
+ "unchecked-index",
+]
+
 [[package]]
 name = "typenum"
 version = "1.13.0"
@@ -1657,6 +1945,21 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56dee185309b50d1f11bfedef0fe6d036842e3fb77413abef29f8f8d1c5d4c1c"
 
+[[package]]
+name = "unchecked-index"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eeba86d422ce181a719445e51872fa30f1f7413b62becb52e95ec91aa262d85c"
+
+[[package]]
+name = "unicase"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
+dependencies = [
+ "version_check 0.9.3",
+]
+
 [[package]]
 name = "unicode-bidi"
 version = "0.3.5"
@@ -1681,6 +1984,12 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
 
+[[package]]
+name = "unicode-width"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.2"
@@ -1699,6 +2008,50 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "utf8-width"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cf7d77f457ef8dfa11e4cd5933c5ddb5dc52a94664071951219a97710f0a32b"
+
+[[package]]
+name = "v_escape"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3e0ab5fab1db278a9413d2ea794cb66f471f898c5b020c3c394f6447625d9d4"
+dependencies = [
+ "buf-min",
+ "v_escape_derive",
+]
+
+[[package]]
+name = "v_escape_derive"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c860ad1273f4eee7006cee05db20c9e60e5d24cba024a32e1094aa8e574f3668"
+dependencies = [
+ "nom 4.2.3",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "v_htmlescape"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f9a8af610ad6f7fc9989c9d2590d9764bc61f294884e9ee93baa58795174572"
+dependencies = [
+ "cfg-if 1.0.0",
+ "v_escape",
+]
+
+[[package]]
+name = "version_check"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
+
 [[package]]
 name = "version_check"
 version = "0.9.3"
@@ -1711,6 +2064,12 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
+[[package]]
+name = "wasi"
+version = "0.10.2+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.74"
@@ -1832,3 +2191,12 @@ dependencies = [
  "winapi 0.2.8",
  "winapi-build",
 ]
+
+[[package]]
+name = "yaml-rust"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
+dependencies = [
+ "linked-hash-map",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 9c367e2..a56410c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,13 +2,23 @@
 name = "oops"
 version = "0.1.0"
 edition = "2018"
-description = "Orhun's obscure pastebin server"
+description = "An obscure pastebin server"
 authors = ["Orhun Parmaksız <orhunparmaksiz@gmail.com>"]
 
 [dependencies]
 actix-web = "3.3.2"
+actix-multipart = "0.3.0"
+actix-files = "0.5.0"
 env_logger = "0.9.0"
 log = "0.4.14"
+serde = "1.0.126"
+futures-util = "0.3.15"
+config = "0.11.0"
+petname = "1.1.0"
+
+[dependencies.byte-unit]
+version = "4.0.12"
+features = ["serde"]
 
 [profile.dev]
 opt-level = 0
diff --git a/config.toml b/config.toml
new file mode 100644
index 0000000..0f09af6
--- /dev/null
+++ b/config.toml
@@ -0,0 +1,10 @@
+[server]
+address="127.0.0.1:8000"
+#workers=4
+max_content_length="10MB"
+upload_path="./upload"
+#auth_token="" # OOPS_SERVER__AUTH_TOKEN=
+
+[paste]
+pet_names = true
+default_extension = "txt"
diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..874628f
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,47 @@
+use byte_unit::Byte;
+use config::{self, ConfigError};
+use std::path::PathBuf;
+
+/// Configuration values.
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct Config {
+    /// Server configuration.
+    pub server: ServerConfig,
+    /// Paste configuration.
+    pub paste: PasteConfig,
+}
+
+/// Server configuration.
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct ServerConfig {
+    /// The socket address to bind.
+    pub address: String,
+    /// Number of workers to start.
+    pub workers: Option<usize>,
+    /// Maximum content length.
+    pub max_content_length: Byte,
+    /// Storage path.
+    pub upload_path: PathBuf,
+    /// Authentication token.
+    pub auth_token: Option<String>,
+}
+
+/// Paste configuration.
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct PasteConfig {
+    /// Use pet names instead of original file names.
+    pub pet_names: bool,
+    /// Default file extension.
+    pub default_extension: String,
+}
+
+impl Config {
+    /// Parses the config file and returns the values.
+    pub fn parse(file_name: &str) -> Result<Config, ConfigError> {
+        let mut config = config::Config::default();
+        config
+            .merge(config::File::with_name(file_name))?
+            .merge(config::Environment::with_prefix(env!("CARGO_PKG_NAME")).separator("__"))?;
+        config.try_into()
+    }
+}
diff --git a/src/file.rs b/src/file.rs
new file mode 100644
index 0000000..f10053e
--- /dev/null
+++ b/src/file.rs
@@ -0,0 +1,39 @@
+use crate::config::Config;
+use std::fs::File;
+use std::io::{Result as IoResult, Write};
+
+/// Writes the bytes to a file in upload directory.
+///
+/// - If `file_name` does not have an extension, it is replaced with [`default_extension`].
+/// - If `file_name` is "-", it is replaced with "stdin".
+/// - If [`pet_names`] is `true`, `file_name` is replaced with a pet name.
+///
+/// [`default_extension`]: crate::config::PasteConfig::default_extension
+/// [`pet_names`]: crate::config::PasteConfig::pet_names
+pub fn save(mut file_name: &str, bytes: &[u8], config: &Config) -> IoResult<String> {
+    if file_name == "-" {
+        file_name = "stdin";
+    }
+    let mut path = config.server.upload_path.join(file_name);
+    match path.clone().extension() {
+        Some(extension) => {
+            if config.paste.pet_names {
+                path.set_file_name(petname::petname(2, "-"));
+                path.set_extension(extension);
+            }
+        }
+        None => {
+            if config.paste.pet_names {
+                path.set_file_name(petname::petname(2, "-"));
+            }
+            path.set_extension(&config.paste.default_extension);
+        }
+    }
+    let mut buffer = File::create(&path)?;
+    buffer.write_all(bytes)?;
+    Ok(path
+        .file_name()
+        .map(|v| v.to_string_lossy())
+        .unwrap_or_default()
+        .to_string())
+}
diff --git a/src/header.rs b/src/header.rs
new file mode 100644
index 0000000..f7d1b3e
--- /dev/null
+++ b/src/header.rs
@@ -0,0 +1,49 @@
+use actix_web::http::header::{
+    ContentDisposition as ActixContentDisposition, DispositionParam, DispositionType,
+};
+use actix_web::{error, Error as ActixError};
+use std::convert::TryFrom;
+
+/// Wrapper for Actix content disposition header.
+///
+/// Aims to parse the file data from multipart body.
+///
+/// e.g. `Content-Disposition: form-data; name="field_name"; filename="filename.jpg"`
+pub struct ContentDisposition {
+    inner: ActixContentDisposition,
+}
+
+impl TryFrom<Option<ActixContentDisposition>> for ContentDisposition {
+    type Error = ActixError;
+    fn try_from(content_disposition: Option<ActixContentDisposition>) -> Result<Self, Self::Error> {
+        match content_disposition {
+            Some(inner) => Ok(Self { inner }),
+            None => Err(error::ErrorUnprocessableEntity(
+                "content disposition does not exist",
+            )),
+        }
+    }
+}
+
+impl ContentDisposition {
+    /// Checks if the content disposition is a form data
+    /// and has the field `field_name`.
+    pub fn has_form_field(&self, field_name: &str) -> bool {
+        self.inner.disposition == DispositionType::FormData
+            && self
+                .inner
+                .parameters
+                .contains(&DispositionParam::Name(field_name.to_string()))
+    }
+
+    /// Parses the file name from parameters if it exists.
+    pub fn get_file_name(&self) -> Result<&str, ActixError> {
+        self.inner
+            .parameters
+            .iter()
+            .find(|param| param.is_filename())
+            .map(|param| param.as_filename())
+            .flatten()
+            .ok_or_else(|| error::ErrorUnprocessableEntity("file data not present"))
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..586d2f1
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,14 @@
+//! oops is a file upload/pastebin service.
+#![warn(missing_docs, clippy::unwrap_used)]
+
+/// Configuration file parser.
+pub mod config;
+
+/// Server routes.
+pub mod server;
+
+/// File handler.
+pub mod file;
+
+/// HTTP headers.
+pub mod header;
diff --git a/src/main.rs b/src/main.rs
index 7fce91e..2be9f10 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,25 +1,25 @@
-#[macro_use] extern crate log;
 use actix_web::middleware::Logger;
-use actix_web::{web, App, HttpResponse, HttpServer, Responder};
-
-async fn index() -> impl Responder {
-    HttpResponse::Ok().body("Hello world!")
-}
-
-fn config(cfg: &mut web::ServiceConfig) {
-    cfg.service(
-        web::resource("/")
-            .route(web::get().to(index))
-            .route(web::head().to(|| HttpResponse::MethodNotAllowed())),
-    );
-}
+use actix_web::{App, HttpServer};
+use oops::config::Config;
+use oops::server;
+use std::fs;
+use std::io::Result as IoResult;
 
 #[actix_web::main]
-async fn main() -> std::io::Result<()> {
+async fn main() -> IoResult<()> {
     env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
-    HttpServer::new(|| App::new().wrap(Logger::default()).configure(config))
-        .bind("127.0.0.1:8000")?
-        .workers(4)
-        .run()
-        .await
+    let config = Config::parse("config").expect("failed to parse config");
+    let server_config = config.server.clone();
+    fs::create_dir_all(server_config.upload_path)?;
+    let mut http_server = HttpServer::new(move || {
+        App::new()
+            .data(config.clone())
+            .wrap(Logger::default())
+            .configure(server::configure_routes)
+    })
+    .bind(server_config.address)?;
+    if let Some(workers) = server_config.workers {
+        http_server = http_server.workers(workers);
+    }
+    http_server.run().await
 }
diff --git a/src/server.rs b/src/server.rs
new file mode 100644
index 0000000..76f9a23
--- /dev/null
+++ b/src/server.rs
@@ -0,0 +1,90 @@
+use crate::config::Config;
+use crate::file;
+use crate::header::ContentDisposition;
+use actix_files::NamedFile;
+use actix_multipart::Multipart;
+use actix_web::http::header::AUTHORIZATION;
+use actix_web::{error, get, post, web, Error, HttpRequest, HttpResponse, Responder};
+use byte_unit::Byte;
+use futures_util::stream::StreamExt;
+use std::convert::TryFrom;
+
+/// Shows the landing page.
+#[get("/")]
+async fn index() -> impl Responder {
+    HttpResponse::Ok().body("oops!")
+}
+
+/// Serves a file from the upload directory.
+#[get("/{file}")]
+async fn serve(
+    request: HttpRequest,
+    path: web::Path<String>,
+    config: web::Data<Config>,
+) -> Result<HttpResponse, Error> {
+    let path = config.server.upload_path.join(&*path);
+    let file = NamedFile::open(&path)?
+        .disable_content_disposition()
+        .prefer_utf8(true);
+    let response = file.into_response(&request)?;
+    Ok(response)
+}
+
+/// Handles file upload by processing `multipart/form-data`.
+#[post("/")]
+async fn upload(
+    request: HttpRequest,
+    mut payload: Multipart,
+    config: web::Data<Config>,
+) -> Result<HttpResponse, Error> {
+    if let Some(token) = &config.server.auth_token {
+        if request
+            .headers()
+            .get(AUTHORIZATION)
+            .map(|v| v.to_str().unwrap_or_default())
+            .map(|v| v.split_whitespace().last().unwrap_or_default())
+            != Some(token)
+        {
+            return Err(error::ErrorUnauthorized("unauthorized"));
+        }
+    }
+    let mut urls: Vec<String> = Vec::new();
+    while let Some(item) = payload.next().await {
+        let mut field = item?;
+        let content = ContentDisposition::try_from(field.content_disposition())?;
+        if content.has_form_field("file") {
+            let mut bytes = Vec::<u8>::new();
+            while let Some(chunk) = field.next().await {
+                bytes.append(&mut chunk?.to_vec());
+            }
+            if bytes.len() as u128 > config.server.max_content_length.get_bytes() {
+                return Err(error::ErrorPayloadTooLarge("upload limit exceeded"));
+            }
+            let file_name = &file::save(content.get_file_name()?, &bytes, &config)?;
+            let connection = request.connection_info();
+            log::info!(
+                "{} ({}) is uploaded from {}",
+                file_name,
+                Byte::from_bytes(bytes.len() as u128).get_appropriate_unit(false),
+                connection.remote_addr().unwrap_or("unknown host")
+            );
+            urls.push(format!(
+                "{}://{}/{}\n",
+                connection.scheme(),
+                connection.host(),
+                file_name
+            ));
+        } else {
+            return Err(error::ErrorUnprocessableEntity("invalid form parameters"));
+        }
+    }
+    Ok(HttpResponse::Ok().body(urls.join("")))
+}
+
+/// Configures the server routes.
+pub fn configure_routes(cfg: &mut web::ServiceConfig) {
+    cfg.service(index)
+        .service(serve)
+        .service(upload)
+        .route("", web::head().to(HttpResponse::MethodNotAllowed));
+}