diff options
| -rw-r--r-- | .ghci | 7 | ||||
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | COPYING | 373 | ||||
| -rw-r--r-- | Makefile | 16 | ||||
| -rw-r--r-- | README.md | 22 | ||||
| -rw-r--r-- | app/Main.hs | 44 | ||||
| -rw-r--r-- | flake.lock | 80 | ||||
| -rw-r--r-- | flake.nix | 25 | ||||
| -rw-r--r-- | fourmolu.yaml | 5 | ||||
| -rw-r--r-- | src/Cache.hs | 46 | ||||
| -rw-r--r-- | src/Common.hs | 82 | ||||
| -rw-r--r-- | src/Common/Mime.hs | 23 | ||||
| -rw-r--r-- | src/Html.hs | 88 | ||||
| -rw-r--r-- | src/Http.hs | 75 | ||||
| -rw-r--r-- | src/Intro.hs | 50 | ||||
| -rw-r--r-- | src/Mail.hs | 39 | ||||
| -rw-r--r-- | src/Mail/Header.hs | 45 | ||||
| -rw-r--r-- | src/Mail/Parser.hs | 136 | ||||
| -rw-r--r-- | src/Queue.hs | 65 | ||||
| -rw-r--r-- | src/Smtp.hs | 102 | ||||
| -rw-r--r-- | src/Tcp.hs | 50 | ||||
| -rw-r--r-- | src/Template.hs | 67 | ||||
| -rw-r--r-- | webmaild.cabal | 71 |
23 files changed, 1513 insertions, 0 deletions
@@ -0,0 +1,7 @@ +:set -fno-code +:set -ferror-spans -freverse-errors -fprint-expanded-synonyms + +:def hlint const . return $ return $ ":! hlint \"src\"" + +:set -isrc +:load app/Main.hs diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..6d7e2df --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +dist-newstyle/ +result @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at https://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..1ccb5e5 --- /dev/null +++ b/Makefile @@ -0,0 +1,16 @@ +.PHONY: format +format: + fourmolu -i app/ + fourmolu -i src/ + +.PHONY: lint +lint: + find {app,src}/ | entr -c hlint src/ app/ + +.PHONY: run +run: + find {app,src}/ | entr -cr cabal new-run + +.PHONY: repl +repl: + ghcid --allow-eval --lint --command "cabal repl" diff --git a/README.md b/README.md new file mode 100644 index 0000000..68db103 --- /dev/null +++ b/README.md @@ -0,0 +1,22 @@ +# webmaild + +A small SMTP server with a web interface to visualize received emails. + + webmaild -smtp-port 5678 -http-port 8765 + +will start an SMTP and HTTP server locally, ready to accept emails. Go to http://localhost:8765 to view the emails received. + +No authentication is required, but it will happily accept any authentication method and ignore it. + +The default ports, if none are provided, are `5879` for SMTP and `9785` for HTTP. + +Note that this is based on very loose interpretations of the respective RFCs for SMTP, HTTP and emails, and is only intended to help with debugging. I tested with like, 2 emails, and it worked well enough (: + +## Building & Running + +The recommended solution is to use `nix`: + +- Use `nix profile install http://git.k.mulga.net/julien/webmaild/snapshot/webmaild-main.tar.gz` to install webmaild, +- Use `nix run http://git.k.mulga.net/julien/webmaild/snapshot/webmaild-main.tar.gz` to build and run the binary directly. + +If you have `cabal` installed, use `cabal build` or `cabal install`. diff --git a/app/Main.hs b/app/Main.hs new file mode 100644 index 0000000..e82d838 --- /dev/null +++ b/app/Main.hs @@ -0,0 +1,44 @@ +module Main (main) where + +import qualified Cache +import Control.Concurrent (forkIO) +import qualified Http +import Intro +import qualified Queue as Q +import qualified Smtp +import System.Environment (getArgs) + +data Opts = Opts {httpPort :: String, smtpPort :: String} deriving (Show) + +defaultHttpPort :: String +defaultHttpPort = "9785" + +defaultSmtpPort :: String +defaultSmtpPort = "5879" + +main :: IO () +main = do + args <- getArgs + case (parseArgs args) of + Right opts -> do + putStrLn $ "Starting HTTP server at http://localhost:" ++ opts.httpPort + putStrLn $ "Starting SMTP server at smtp://localhost:" ++ opts.smtpPort + + queue <- Q.newQueue + cache <- Cache.newInMemory + _ <- forkIO $ Cache.start queue cache + _ <- forkIO $ Http.runServer Nothing opts.httpPort cache queue + Smtp.runServer Nothing opts.smtpPort queue + Left err -> putStrLn ("Error. " ++ err) + +parseArgs :: [String] -> Either String Opts +parseArgs args = parse args (Opts defaultHttpPort defaultSmtpPort) + where + parse [] opts = Right opts + parse (x1 : x2 : xs) opts + | x1 == "-http-port" = parse xs (opts{httpPort = x2}) + | x1 == "-smtp-port" = parse xs (opts{smtpPort = x2}) + parse (x : []) _ + | x == "-http-port" = Left "Missing HTTP port" + | x == "-smtp-port" = Left "Missing SMTP port" + parse (x : _) _ = Left ("Unrecognized option: " ++ x) diff --git a/flake.lock b/flake.lock new file mode 100644 index 0000000..23f370c --- /dev/null +++ b/flake.lock @@ -0,0 +1,80 @@ +{ + "nodes": { + "flake-parts": { + "inputs": { + "nixpkgs-lib": "nixpkgs-lib" + }, + "locked": { + "lastModified": 1709336216, + "narHash": "sha256-Dt/wOWeW6Sqm11Yh+2+t0dfEWxoMxGBvv3JpIocFl9E=", + "owner": "hercules-ci", + "repo": "flake-parts", + "rev": "f7b3c975cf067e56e7cda6cb098ebe3fb4d74ca2", + "type": "github" + }, + "original": { + "owner": "hercules-ci", + "repo": "flake-parts", + "type": "github" + } + }, + "haskell-flake": { + "locked": { + "lastModified": 1710675764, + "narHash": "sha256-ZpBoh1dVLTxC3wccOnsji7u/Ceuwh2raQn/Vq6BBYwo=", + "owner": "srid", + "repo": "haskell-flake", + "rev": "ef955d7d239d7f82f343b569a4cf2c7c1a4df1f4", + "type": "github" + }, + "original": { + "owner": "srid", + "repo": "haskell-flake", + "type": "github" + } + }, + "nixpkgs": { + "locked": { + "lastModified": 1710889954, + "narHash": "sha256-Pr6F5Pmd7JnNEMHHmspZ0qVqIBVxyZ13ik1pJtm2QXk=", + "owner": "nixos", + "repo": "nixpkgs", + "rev": "7872526e9c5332274ea5932a0c3270d6e4724f3b", + "type": "github" + }, + "original": { + "owner": "nixos", + "ref": "nixpkgs-unstable", + "repo": "nixpkgs", + "type": "github" + } + }, + "nixpkgs-lib": { + "locked": { + "dir": "lib", + "lastModified": 1709237383, + "narHash": "sha256-cy6ArO4k5qTx+l5o+0mL9f5fa86tYUX3ozE1S+Txlds=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "1536926ef5621b09bba54035ae2bb6d806d72ac8", + "type": "github" + }, + "original": { + "dir": "lib", + "owner": "NixOS", + "ref": "nixos-unstable", + "repo": "nixpkgs", + "type": "github" + } + }, + "root": { + "inputs": { + "flake-parts": "flake-parts", + "haskell-flake": "haskell-flake", + "nixpkgs": "nixpkgs" + } + } + }, + "root": "root", + "version": 7 +} diff --git a/flake.nix b/flake.nix new file mode 100644 index 0000000..ac71e74 --- /dev/null +++ b/flake.nix @@ -0,0 +1,25 @@ +{ + inputs = { + nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable"; + flake-parts.url = "github:hercules-ci/flake-parts"; + haskell-flake.url = "github:srid/haskell-flake"; + }; + outputs = inputs@{ self, nixpkgs, flake-parts, ... }: + flake-parts.lib.mkFlake { inherit inputs; } { + systems = nixpkgs.lib.systems.flakeExposed; + imports = [ inputs.haskell-flake.flakeModule ]; + + perSystem = { self', pkgs, ... }: { + + haskellProjects.default = { + devShell = { + enable = true; + tools = hp: { fourmolu = hp.fourmolu; ghcid = hp.ghcid; }; + hlsCheck.enable = true; + }; + }; + + packages.default = self'.packages.webmaild; + }; + }; +} diff --git a/fourmolu.yaml b/fourmolu.yaml new file mode 100644 index 0000000..ce46be3 --- /dev/null +++ b/fourmolu.yaml @@ -0,0 +1,5 @@ +column-limit: 100 +comma-style: leading +import-export-style: leading +indentation: 2 +respectful: false diff --git a/src/Cache.hs b/src/Cache.hs new file mode 100644 index 0000000..b009770 --- /dev/null +++ b/src/Cache.hs @@ -0,0 +1,46 @@ +module Cache (newInMemory, start, CacheM, getInbox) where + +import Control.Concurrent.STM + ( TVar + , atomically + , newTVarIO + , readTVar + , readTVarIO + , writeTVar + ) +import Intro +import qualified Mail as M +import qualified Queue as Q + +data Cache = Cache + { count :: Int + , inbox :: [M.Mail] + } + +type CacheM = TVar Cache + +newInMemory :: IO CacheM +newInMemory = newTVarIO newCache + +start :: Q.QueueM M.Mail -> CacheM -> IO () +start queue cache = go + where + go :: IO () + go = do + mail <- Q.pull queue + updateCache cache (`addMail` mail) + go + +getInbox :: CacheM -> IO [M.Mail] +getInbox c = inbox <$> readTVarIO c + +newCache :: Cache +newCache = Cache 0 [] + +addMail :: Cache -> M.Mail -> Cache +addMail cache mail = cache{count = count cache + 1, inbox = mail : inbox cache} + +updateCache :: CacheM -> (Cache -> Cache) -> IO () +updateCache c f = atomically $ do + cache <- readTVar c + writeTVar c (f cache) diff --git a/src/Common.hs b/src/Common.hs new file mode 100644 index 0000000..91bf708 --- /dev/null +++ b/src/Common.hs @@ -0,0 +1,82 @@ +module Common + ( toLower + , trim + , trimWith + , splitOn + , split2 + , replace + , (!!?) + , findVal + , maybeAt + , startsWith + , delete + ) +where + +import Data.Char (isSpace) +import qualified Data.Char as C +import Data.List (find, stripPrefix) +import Intro + +trim :: String -> String +trim = f . f + where + f = reverse . dropWhile isSpace + +trimWith :: (Char -> Bool) -> String -> String +trimWith p = f . f + where + f = reverse . dropWhile p + +splitOn :: (a -> Bool) -> [a] -> [[a]] +splitOn p s = case dropWhile p s of + [] -> [] + s' -> w : splitOn p s'' + where + (w, s'') = break p s' + +split2 :: (a -> Bool) -> [a] -> ([a], [a]) +split2 p s = + case break p s of + (x, _ : y) -> (x, y) + (x, []) -> (x, []) + +infix 9 !!? + +(!!?) :: [a] -> Int -> Maybe a +(!!?) xs i + | i < 0 = Nothing + | otherwise = go i xs + where + go :: Int -> [a] -> Maybe a + go 0 (x : _) = Just x + go j (_ : ys) = go (j - 1) ys + go _ [] = Nothing + +maybeAt :: Int -> [a] -> Maybe a +maybeAt = flip (!!?) + +toLower :: String -> String +toLower = fmap C.toLower + +startsWith :: (a -> Bool) -> [a] -> Bool +startsWith _ [] = False +startsWith p (x : _) = p x + +findVal :: (a -> Bool) -> [(a, b)] -> Maybe b +findVal p xs = snd <$> find (p . fst) xs + +replace :: (Eq a) => [a] -> [a] -> [a] -> [a] +replace [] to xs = go xs + where + go [] = to + go (x : xs') = to ++ x : go xs' +replace from to xs | Just xs' <- stripPrefix from xs = to ++ replace from to xs' +replace from to (x : xs) = x : replace from to xs +replace _ _ [] = [] + +delete :: (a -> Bool) -> [a] -> (Maybe a, [a]) +delete p = foldr f (Nothing, []) + where + f x (Nothing, xs) | p x = (Just x, xs) + f x (m, xs) = (m, x : xs) diff --git a/src/Common/Mime.hs b/src/Common/Mime.hs new file mode 100644 index 0000000..5356312 --- /dev/null +++ b/src/Common/Mime.hs @@ -0,0 +1,23 @@ +module Common.Mime (getType, getSubtype, MimeType (..)) where + +import Common (split2, trim) +import Intro + +data MimeType = Text String | Image String | Application String + +getType :: String -> Maybe MimeType +getType mime = case type_ of + "text" -> Just (Text subtype) + "image" -> Just (Image subtype) + "application" -> Just (Application subtype) + _ -> Nothing + where + (type_, subtype) = split2 (== '/') $ trim mime + +getSubtype :: String -> String +getSubtype = trim . snd . split2 (== '/') + +instance Show MimeType where + show (Text sub) = "text/" ++ sub + show (Image sub) = "image/" ++ sub + show (Application sub) = "application/" ++ sub diff --git a/src/Html.hs b/src/Html.hs new file mode 100644 index 0000000..dd60e16 --- /dev/null +++ b/src/Html.hs @@ -0,0 +1,88 @@ +module Html (span, html, p, hr, div_, iframe, img, main_, ul, li, table, td, th, tr, a) where + +import Data.List (unwords) +import Intro + +type Attr = (String, String) + +html :: [String] -> String +html xs = + concat + [ "<html>" + , "<head>" + , script + [ "function resizeIframe(x) { \ + \ x.style.height = x.contentWindow.document.documentElement.scrollHeight + 'px'; \ + \}" + ] + , "</head>" + , "<body>" + , style + [ ":root { font-size: 16px; }" + , "* { padding: 0; margin: 0; }" + , "body { display: flex; flex-direction: column; gap: 1rem; padding: 1rem; }" + , "hr { height: 0; border: 0; border-top: 1px solid #000; }" + , "table { border-collapse: collapse; width: 100%; }" + , "td, th { border: 1px solid #000; padding: 0.4rem; }" + , "iframe { width: 100%; min-height: 80vh; border: none; }" + , "main { display: flex; flex-direction: column; gap: 1rem; }" + , ".part { background-color: #eee; }" + , ".part-body { padding: 1rem; }" + ] + , concat xs + , "</body></html>" + ] + +hr :: String +hr = "<hr>" + +style :: [String] -> String +style xs = concat ["<style>", concat xs, "</style>"] + +script :: [String] -> String +script xs = concat ["<script>", concat xs, "</script>"] + +iframe :: [Attr] -> [String] -> String +iframe xs ys = concat ["<iframe onload='resizeIframe(this)' ", attrs xs, ">", concat ys, "</iframe>"] + +div_ :: [Attr] -> [String] -> String +div_ xs ys = concat ["<div ", attrs xs, ">", concat ys, "</div>"] + +main_ :: [String] -> String +main_ xs = concat ["<main>", concat xs, "</main>"] + +p :: [String] -> String +p xs = concat ["<p>", concat xs, "</p>"] + +span :: [String] -> String +span xs = concat ["<span>", concat xs, "</span>"] + +a :: [Attr] -> [String] -> String +a xs ys = concat ["<a ", attrs xs, ">", concat ys, "</a>"] + +table :: [String] -> String +table xs = concat ["<table>", concat xs, "</table>"] + +td :: [String] -> String +td xs = concat ["<td>", concat xs, "</td>"] + +th :: [String] -> String +th xs = concat ["<th>", concat xs, "</th>"] + +tr :: [String] -> String +tr xs = concat ["<tr>", concat xs, "</tr>"] + +ul :: [String] -> String +ul xs = concat ["<ul>", concat xs, "</ul>"] + +li :: [String] -> String +li xs = concat ["<li>", concat xs, "</li>"] + +img :: [Attr] -> String +img xs = concat ["<img ", attrs xs, ">"] + +attr :: Attr -> String +attr (k, v) = concat [k, "='", v, "'"] + +attrs :: [Attr] -> String +attrs xs = unwords (attr <$> xs) diff --git a/src/Http.hs b/src/Http.hs new file mode 100644 index 0000000..f486920 --- /dev/null +++ b/src/Http.hs @@ -0,0 +1,75 @@ +module Http (runServer) where + +import qualified Cache as C +import Common (maybeAt, splitOn) +import qualified Html as H +import Intro +import qualified Mail as M +import Network.Socket (HostName, ServiceName, Socket, socketToHandle) +import qualified Queue as Q +import System.IO (Handle, IOMode (ReadWriteMode), hClose, hGetLine, hPutStrLn) +import qualified Tcp +import qualified Template as T +import Text.Read (readMaybe) + +runServer :: Maybe HostName -> ServiceName -> C.CacheM -> Q.QueueM M.Mail -> IO () +runServer host port cache queue = Tcp.runServer host port (sockHandler cache queue) + +sockHandler :: C.CacheM -> Q.QueueM M.Mail -> Socket -> IO () +sockHandler cache queue s = do + handle <- socketToHandle s ReadWriteMode + requestHandler handle cache queue + +requestHandler :: Handle -> C.CacheM -> Q.QueueM M.Mail -> IO () +requestHandler h cache queue = do + line <- hGetLine h + case route line of + ("GET", []) -> showInbox h cache + ("GET", ["poll", s]) -> showPolled h queue s + ("GET", ["mail", n]) -> case (readMaybe n :: Maybe Int) of + Just n' -> showMail h cache n' + Nothing -> showNotFound h + _ -> showNotFound h + hClose h + +showNotFound :: Handle -> IO () +showNotFound h = do + replyHtml h 404 [H.p ["Page not found"]] + +showInbox :: Handle -> C.CacheM -> IO () +showInbox h cache = do + inbox <- C.getInbox cache + replyHtml h 200 (T.inbox inbox) + +showMail :: Handle -> C.CacheM -> Int -> IO () +showMail h cache idx = do + mail <- maybeAt idx <$> C.getInbox cache + case mail of + Just mail' -> replyHtml h 200 (T.mail mail') + Nothing -> showNotFound h + +showPolled :: Handle -> Q.QueueM M.Mail -> String -> IO () +showPolled h queue s = do + mail <- Q.pullWith (\m -> m.to == [s]) queue + replyHtml h 200 (T.mail mail) + +route :: String -> (String, [String]) +route x = case words x of + [m, p, "HTTP/1.1"] -> (m, splitOn (== '/') p) + _ -> ("GET", []) + +replyHtml :: Handle -> Int -> [String] -> IO () +replyHtml h s body = do + let page = H.html body + hPutStrLn h $ "HTTP/1.1 " ++ status s + hPutStrLn h "content-type: text/html" + hPutStrLn h $ "content-length: " ++ show (length page) + hPutStrLn h "" + hPutStrLn h page + hPutStrLn h "" + +status :: Int -> String +status s = case s of + 200 -> "200 OK" + 404 -> "404 NOT FOUND" + _ -> "500 INTERNAL SERVER ERROR" diff --git a/src/Intro.hs b/src/Intro.hs new file mode 100644 index 0000000..46e35d4 --- /dev/null +++ b/src/Intro.hs @@ -0,0 +1,50 @@ +module Intro + ( ($) + , (&&) + , (+) + , (++) + , (-) + , (.) + , (/=) + , (<$>) + , (<) + , (=<<) + , (==) + , (>>=) + , (||) + , Bool (False, True) + , Char + , Eq + , IO + , Int + , Maybe (Just, Nothing) + , Either (Left, Right) + , Show + , String + , break + , concat + , const + , curry + , dropWhile + , filter + , flip + , foldr + , fst + , head + , length + , fmap + , mconcat + , not + , otherwise + , pure + , putStrLn + , reverse + , show + , snd + , words + , zip + , zipWith + ) +where + +import Prelude diff --git a/src/Mail.hs b/src/Mail.hs new file mode 100644 index 0000000..830f4da --- /dev/null +++ b/src/Mail.hs @@ -0,0 +1,39 @@ +module Mail + ( Mail (..) + , subject + , Header + , P.Part (..) + , MailM + , newMail + , setData + ) +where + +import Common (toLower) +import Control.Monad.State.Lazy (StateT) +import Data.List (find) +import Intro +import Mail.Header (Header) +import qualified Mail.Parser as P + +data Mail = Mail + { client :: String + , from :: String + , to :: [String] + , headers :: [Header] + , body :: [P.Part] + } + deriving (Show, Eq) + +type MailM a = StateT Mail IO a + +newMail :: Mail +newMail = Mail "" "" [] [] [] + +setData :: [String] -> Mail -> Mail +setData xs m = m{headers = msg.headers, body = msg.body} + where + msg = P.run xs + +subject :: Mail -> Maybe String +subject m = snd <$> find (\(k, _) -> toLower k == "subject") (headers m) diff --git a/src/Mail/Header.hs b/src/Mail/Header.hs new file mode 100644 index 0000000..e7265b2 --- /dev/null +++ b/src/Mail/Header.hs @@ -0,0 +1,45 @@ +module Mail.Header + ( ContentType (..) + , Header + , contentType + , contentTransferEncoding + ) +where + +import Common (findVal, split2, splitOn, toLower, trim, trimWith) +import Intro + +type Header = (String, String) + +data ContentType = ContentType + { mime :: String + , boundary :: Maybe String + , charset :: Maybe String + } + deriving (Show) + +newContentType :: String -> ContentType +newContentType m = ContentType{mime = m, boundary = Nothing, charset = Nothing} + +contentType :: [Header] -> Maybe ContentType +contentType xs = do + v <- findValIns "content-type" xs + case (fmap trim . splitOn (== ';')) v of + [y] -> pure (newContentType y) + y : ys -> + let kv = fmap (split2 (== '=')) ys + in pure + $ (newContentType y) + { boundary = trimQuotes <$> findValIns "boundary" kv + , charset = findValIns "charset" kv + } + [] -> Nothing + +contentTransferEncoding :: [Header] -> Maybe String +contentTransferEncoding = findValIns "content-transfer-encoding" + +findValIns :: String -> [Header] -> Maybe String +findValIns k = findVal ((== k) . toLower) + +trimQuotes :: String -> String +trimQuotes = trimWith (\x -> x == '"' || x == ' ') diff --git a/src/Mail/Parser.hs b/src/Mail/Parser.hs new file mode 100644 index 0000000..090602c --- /dev/null +++ b/src/Mail/Parser.hs @@ -0,0 +1,136 @@ +module Mail.Parser (run, Message (..), Part (..)) where + +import Common (startsWith, trim) +import Control.Monad.State (State, evalState, get, gets, modify) +import Data.Char (isSpace) +import Data.List (intercalate) +import Intro +import Mail.Header (Header) +import qualified Mail.Header as H + +data Message = Message + { headers :: [Header] + , body :: [Part] + } + deriving (Show) + +data Part = Part + { headers :: [Header] + , body :: String -- TOOD: Scoped Fields extension + } + deriving (Show, Eq) + +data ParserState = InHeader (Maybe Header) | InBody deriving (Show, Eq) + +data Parser = Parser + { pHeaders :: [Header] + , pBody :: [String] + , pState :: ParserState + , pErrors :: [String] + } + deriving (Show) + +type MessageM = State Parser Message + +type PartM = State Parser Part + +newParser :: Parser +newParser = Parser [] [] (InHeader Nothing) [] + +run :: [String] -> Message +run xs = evalState (parseMail xs) newParser + +parseMail :: [String] -> MessageM +parseMail [] = gets (evalState parseMailBody) +parseMail (x : xs) = do + s <- get + case pState s of + InHeader Nothing + | trim x == "" -> modify (setState InBody) + | otherwise -> case kv x of + Just (k, v) -> modify (setInHeader (k, v)) + Nothing -> modify (setInHeaderStart . pushError x) + InHeader (Just (k, v)) + | trim x == "" -> modify (setState InBody . pushHeader (k, v)) + | startsWith isSpace x -> modify (setInHeader (k, v ++ x)) + | otherwise -> case kv x of + Just (k', v') -> modify (setInHeader (k', v') . pushHeader (k, v)) + Nothing -> modify (setInHeaderStart . pushHeader (k, v) . pushError x) + InBody -> modify (pushBody x) + parseMail xs + +parseMailBody :: MessageM +parseMailBody = do + s <- get + pure $ case getBoundary s of + Just boundary -> + Message + { headers = pHeaders s + , body = getPart <$> bodyParts (reverse $ pBody s) boundary + } + Nothing -> + Message + { headers = pHeaders s + , body = [Part{headers = [], body = intercalate "\r\n" . reverse $ pBody s}] + } + where + getBoundary s = H.boundary =<< (H.contentType . pHeaders) s + getPart part = evalState (parsePart part) newParser + +parsePart :: [String] -> PartM +parsePart [] = do + s <- get + pure $ Part{headers = pHeaders s, body = intercalate "\r\n" . reverse $ pBody s} +parsePart (x : xs) = do + s <- get + case pState s of + InHeader Nothing + | trim x == "" -> modify (setState InBody) + | otherwise -> case kv x of + Just (k, v) -> modify (setInHeader (k, v)) + Nothing -> modify (setInHeaderStart . pushError x) + InHeader (Just (k, v)) + | trim x == "" -> modify (setState InBody . pushHeader (k, v)) + | startsWith isSpace x -> modify (setInHeader (k, v ++ x)) + | otherwise -> case kv x of + Just (k', v') -> modify (setInHeader (k', v') . pushHeader (k, v)) + Nothing -> modify (setInHeaderStart . pushHeader (k, v) . pushError x) + InBody -> modify (pushBody x) + parsePart xs + +pushHeader :: Header -> Parser -> Parser +pushHeader x p = p{pHeaders = (trim <$> x) : pHeaders p} + +pushBody :: String -> Parser -> Parser +pushBody x p = p{pBody = trim x : pBody p} + +pushError :: String -> Parser -> Parser +pushError x p = p{pErrors = x : pErrors p} + +setState :: ParserState -> Parser -> Parser +setState x p = p{pState = x} + +setInHeaderStart :: Parser -> Parser +setInHeaderStart p = p{pState = InHeader Nothing} + +setInHeader :: Header -> Parser -> Parser +setInHeader x p = p{pState = InHeader $ Just x} + +kv :: String -> Maybe (String, String) +kv x = + case break (== ':') x of + (k, _ : v) -> Just (k, v) + (_, []) -> Nothing + +bodyParts :: [String] -> String -> [[String]] +bodyParts lines' boundary = filter (not . isEmptyPart) $ go lines' [] [] + where + go :: [String] -> [String] -> [[String]] -> [[String]] + go [] _ parts = parts + go (x : xs) acc parts + | trim x == ("--" ++ boundary) = go xs [] (reverse acc : parts) + | otherwise = go xs (x : acc) parts + +isEmptyPart :: [String] -> Bool +isEmptyPart [""] = True +isEmptyPart _ = False diff --git a/src/Queue.hs b/src/Queue.hs new file mode 100644 index 0000000..56af251 --- /dev/null +++ b/src/Queue.hs @@ -0,0 +1,65 @@ +module Queue + ( Queue + , QueueM + , newQueue + , push + , pull + , pullWith + ) +where + +import Common (delete) +import Control.Concurrent.STM + ( TChan + , TMVar + , TVar + , atomically + , newEmptyTMVarIO + , newTChan + , newTVar + , readTChan + , readTVar + , readTVarIO + , takeTMVar + , tryPutTMVar + , writeTChan + , writeTVar + ) +import Control.Monad (when) +import Intro + +type Selector a = (a -> Bool) + +data Queue a = Queue + { inner :: TChan a + , selectors :: [(Selector a, TMVar a)] + } + +type QueueM a = TVar (Queue a) + +newQueue :: IO (QueueM a) +newQueue = atomically $ do + chan <- newTChan + newTVar $ Queue chan [] + +pullWith :: Selector a -> QueueM a -> IO a +pullWith p queueM = do + q <- readTVarIO queueM + t <- newEmptyTMVarIO + atomically $ writeTVar queueM (q{selectors = (p, t) : q.selectors}) + atomically $ takeTMVar t + +push :: QueueM a -> a -> IO () +push queueM x = atomically $ do + q <- readTVar queueM + case delete (\(p, _) -> p x) q.selectors of + (Just (_, t), xs) -> do + writeTChan q.inner x + isPut <- tryPutTMVar t x + when isPut $ writeTVar queueM (q{selectors = xs}) + (Nothing, _) -> writeTChan q.inner x + +pull :: QueueM a -> IO a +pull queueM = atomically $ do + q <- readTVar queueM + readTChan q.inner diff --git a/src/Smtp.hs b/src/Smtp.hs new file mode 100644 index 0000000..331f6d2 --- /dev/null +++ b/src/Smtp.hs @@ -0,0 +1,102 @@ +module Smtp (runServer) where + +import Common (splitOn, trim) +import Control.Monad (unless, when) +import Control.Monad.IO.Class (liftIO) +import Control.Monad.State.Lazy (execStateT, modify) +import Intro +import qualified Mail as M +import Network.Socket (HostName, ServiceName, Socket, socketToHandle) +import qualified Queue as Q +import System.IO (Handle, IOMode (ReadWriteMode), hClose, hGetLine, hPutStrLn) +import qualified Tcp + +runServer :: Maybe HostName -> ServiceName -> Q.QueueM M.Mail -> IO () +runServer host port queue = Tcp.runServer host port (sockHandler queue) + +sockHandler :: Q.QueueM M.Mail -> Socket -> IO () +sockHandler queue s = do + handle <- socketToHandle s ReadWriteMode + hPutStrLn handle "220 service ready" + go handle + where + go :: Handle -> IO () + go handle = do + mail <- execStateT (commandHandler handle) M.newMail + Q.push queue mail + go handle + +commandHandler :: Handle -> M.MailM () +commandHandler h = do + line <- liftIO $ hGetLine h + let command = words line + case command of + ["EHLO", client] -> do + modify (\s -> s{M.client = client}) + replyOk h + commandHandler h + ["HELO", client] -> do + modify (\s -> s{M.client = client}) + replyOk h + commandHandler h + ["AUTH", _, _] -> do + reply h 235 "authentication succeeded" + commandHandler h + ["MAIL", from] -> do + modify (\s -> s{M.from = readFrom from}) + replyOk h + commandHandler h + ["RCPT", to] -> do + modify (\s -> s{M.to = readTo to : M.to s}) + replyOk h + commandHandler h + ["DATA"] -> do + reply h 354 "start mail input" + dataHandler h + ["RSET"] -> do + modify (const M.newMail) + replyOk h + ["QUIT"] -> do + replyByeAndClose h + ["NOOP"] -> replyOk h + _ -> do + reply h 500 "unknown command" + liftIO $ putStrLn ("Unknown command: " ++ line) + pure () + +dataHandler :: Handle -> M.MailM () +dataHandler handle = do + readData [] + replyOk handle + replyByeAndClose handle + where + readData :: [String] -> M.MailM () + readData xs = do + line <- liftIO $ hGetLine handle + let cont = trim line /= "." + when cont $ readData (line : xs) + unless cont $ modify (M.setData $ reverse xs) + +reply :: Handle -> Int -> String -> M.MailM () +reply handle status message = + liftIO + $ hPutStrLn handle + $ mconcat [show status, " ", message] + +replyOk :: Handle -> M.MailM () +replyOk handle = reply handle 250 "ok" + +replyByeAndClose :: Handle -> M.MailM () +replyByeAndClose handle = do + reply handle 221 "closing channel" + liftIO $ hClose handle + +readFrom :: String -> String +readFrom s = filter (\c -> c /= '<' && c /= '>') $ case splitOn (== ':') s of + ["FROM", addr] -> addr + _ -> s + +readTo :: String -> String +readTo s = filter (\c -> c /= '<' && c /= '>') $ case splitOn (== ':') s of + ["TO", addr] -> addr + _ -> s diff --git a/src/Tcp.hs b/src/Tcp.hs new file mode 100644 index 0000000..d0ee6c9 --- /dev/null +++ b/src/Tcp.hs @@ -0,0 +1,50 @@ +module Tcp (runServer) where + +import Control.Concurrent (forkFinally) +import qualified Control.Exception as E +import Control.Monad (forever, void) +import Intro +import Network.Socket + ( AddrInfoFlag (AI_PASSIVE) + , HostName + , ServiceName + , Socket + , SocketOption (ReuseAddr) + , SocketType (Stream) + , accept + , addrAddress + , addrFlags + , addrSocketType + , bind + , close + , defaultHints + , getAddrInfo + , gracefulClose + , listen + , openSocket + , setCloseOnExecIfNeeded + , setSocketOption + , withFdSocket + , withSocketsDo + ) + +runServer :: Maybe HostName -> ServiceName -> (Socket -> IO a) -> IO a +runServer host port server = withSocketsDo $ do + addr <- resolve + E.bracket (open addr) close go + where + resolve = do + let hints = defaultHints{addrFlags = [AI_PASSIVE], addrSocketType = Stream} + head <$> getAddrInfo (Just hints) host (Just port) + open addr = E.bracketOnError (openSocket addr) close $ \sock -> do + setSocketOption sock ReuseAddr 1 + withFdSocket sock setCloseOnExecIfNeeded + bind sock $ addrAddress addr + listen sock 1024 + pure sock + go :: Socket -> IO a + go sock = forever + $ E.bracketOnError (accept sock) (close . fst) + $ \(conn, _peer) -> + void + $ forkFinally (server conn) (const $ gracefulClose conn 5000) diff --git a/src/Template.hs b/src/Template.hs new file mode 100644 index 0000000..ff13bd3 --- /dev/null +++ b/src/Template.hs @@ -0,0 +1,67 @@ +module Template (inbox, mail) where + +import Common (replace) +import qualified Common.Mime as Mime +import Data.List (intercalate) +import Data.Maybe (fromMaybe) +import qualified Html as H +import Intro +import qualified Mail as M +import qualified Mail.Header as H + +inbox :: [M.Mail] -> [String] +inbox xs = + [ H.p [show $ length xs, " messages."] + , H.table $ inboxHeader : zipWith (curry inboxRow) [0 ..] xs + ] + +inboxHeader :: String +inboxHeader = H.tr [H.th ["Subject"], H.th ["From"], H.th ["To"]] + +inboxRow :: (Int, M.Mail) -> String +inboxRow (i, m) = + H.tr + [ H.td [H.a [("href", "/mail/" ++ show i)] [fromMaybe "No subject" (M.subject m)]] + , H.td [M.from m] + , H.td (M.to m) + ] + +mail :: M.Mail -> [String] +mail m = + [ H.a [("href", "/")] ["Inbox"] + , H.p ["From: ", M.from m] + , H.p ["To: ", intercalate ", " $ M.to m] + , H.table (mailHeader <$> m.headers) + , H.hr + , H.main_ (fmap (H.div_ [("class", "part")] . mailPart) m.body) + ] + +mailHeader :: M.Header -> String +mailHeader (k, v) = H.tr [H.td [k], H.td [v]] + +mailPart :: M.Part -> [String] +mailPart p = + [ H.table (mailHeader <$> p.headers) + , H.div_ [("class", "part-body")] [mailPartBody p] + ] + +mailPartBody :: M.Part -> String +mailPartBody p = case (mimeType, encoding) of + (Just (Mime.Image _), Just "base64") -> H.img [("src", concat ["data:", show mimeType, ";base64,", p.body])] + (_, Just "quoted-printable") -> H.iframe [("srcdoc", decodeQP p.body)] [] + _ -> H.iframe [("srcdoc", p.body)] [] + where + mimeType = (H.contentType p.headers) >>= Mime.getType . H.mime + encoding = H.contentTransferEncoding p.headers + +-- "Handles" the "quoted-printable" encoding: +-- https://datatracker.ietf.org/doc/html/rfc1521#section-5.1 +-- This is just wrong (or, wronger than the rest), but this part of the spec +-- is crazy, so, whatever. +decodeQP :: String -> String +decodeQP = + replace "=3D" "=" + . replace "=C2" "" + . replace "=A0" " " + . replace "=\r" "" + . replace "=\r\n" "" diff --git a/webmaild.cabal b/webmaild.cabal new file mode 100644 index 0000000..e2ee85c --- /dev/null +++ b/webmaild.cabal @@ -0,0 +1,71 @@ +cabal-version: 3.0 +name: webmaild +version: 0.1.0.0 +license: MPL-2.0 +license-file: COPYING +author: evuez +maintainer: julien@mulga.net +build-type: Simple + +common warnings + ghc-options: + -Wall + -- -Werror + -- -Wall-missed-specialisations + -Wcpp-undef + -Widentities + -Wimplicit-prelude + -Wincomplete-record-updates + -Wincomplete-uni-patterns + -Wmissed-specialisations + -- -Wmissing-deriving-strategies + -Wmissing-export-lists + -Wmissing-exported-signatures + -Wmissing-home-modules + -- -Wmissing-import-lists + -Wmissing-local-signatures + -Wmonomorphism-restriction + -Wpartial-fields + -Wredundant-constraints + -Wunused-packages + -Wunused-type-patterns + +common exe + default-extensions: + NoImplicitPrelude + DuplicateRecordFields + OverloadedRecordDot + other-modules: + Cache + Common + Common.Mime + Html + Http + Intro + Mail + Mail.Header + Mail.Parser + Queue + Smtp + Tcp + Template + build-depends: base >=4.17.2.1, network, stm, mtl + hs-source-dirs: app,src + default-language: Haskell2010 + +executable webmaild + import: warnings + import: exe + main-is: Main.hs + ghc-options: + -fno-expose-internal-symbols + -O2 + +executable webmaild-dyn + import: warnings + import: exe + main-is: Main.hs + ghc-options: + -fno-expose-internal-symbols + -O2 + -dynamic |