nimhttpd.nim
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 |
import asynchttpserver, asyncdispatch, asyncnet, os, strutils, mimetypes, times, parseopt2
from strtabs import StringTableRef, newStringTable
const style = "style.css".slurp
let appname = "NimHTTPd Web Server"
let appversion = "1.0.0"
let usage = appname & " v" & appversion & " - Tiny Static File Web Server" & """
(c) 2014-2015 Fabio Cevasco
Usage:
nimhttpd [-p:port] [directory]
Arguments:
directory The directory to serve (default: current directory).
port Listen to port (default: 1337).
"""
type
NimHttpResponse* = tuple[
code: HttpCode,
content: string,
headers: StringTableRef]
NimHttpSettings* = object
logging*: bool
directory*: string
mimes*: MimeDb
port*: Port
address*: string
appname: string
appversion*: string
proc h_page(settings:NimHttpSettings, content: string, title=""): string =
var footer = """<div id="footer">$1 v$2</div>""" % [settings.appname, settings.appversion]
result = """
<!DOCTYPE html>
<html>
<head>
<title>$1</title>
<style type="text/css">$2</style>
<meta charset="UTF-8">
</head>
<body>
<h1>$1</h1>
$3
$4
</body>
</html>
""" % [title, style, content, footer]
proc relativePath(path, cwd: string): string =
var path2 = path
if cwd == "/":
return path
else:
path2.delete(0, cwd.len)
var relpath = path2.replace("\\", "/")
if (not relpath.endsWith("/")) and (not path.existsFile):
relpath = relpath&"/"
if not relpath.startsWith("/"):
relpath = "/"&relpath
return relpath
proc relativeParent(path, cwd: string): string =
var relparent = path.parentDir.relativePath(cwd)
if relparent == "":
return "/"
else:
return relparent
proc sendNotFound(settings: NimHttpSettings, path: string): NimHttpResponse =
var content = "<p>The page you requested cannot be found.<p>"
return (code: Http404, content: h_page(settings, content, $Http404), headers: newStringTable())
proc sendNotImplemented(settings: NimHttpSettings, path: string): NimHttpResponse =
var content = "<p>This server does not support the functionality required to fulfill the request.</p>"
return (code: Http501, content: h_page(settings, content, $Http501), headers: newStringTable())
proc sendStaticFile(settings: NimHttpSettings, path: string): NimHttpResponse =
let mimes = settings.mimes
let mimetype = mimes.getMimetype(path.splitFile.ext[1 .. ^1])
var file = path.readFile
return (code: Http200, content: file, headers: {"Content-Type": mimetype}.newStringTable)
proc sendDirContents(settings: NimHttpSettings, path: string): NimHttpResponse =
let cwd = settings.directory
var res: NimHttpResponse
var files = newSeq[string](0)
if path != cwd and path != cwd&"/" and path != cwd&"\\":
files.add """<li class="i-back entypo"><a href="$1">..</a></li>""" % [path.relativeParent(cwd)]
var title = "Index of " & path.relativePath(cwd)
for i in walkDir(path):
let name = i.path.extractFilename
let relpath = i.path.relativePath(cwd)
if name == "index.html" or name == "index.htm":
return sendStaticFile(settings, i.path)
if i.path.existsDir:
files.add """<li class="i-folder entypo"><a href="$1">$2</a></li>""" % [relpath, name]
else:
files.add """<li class="i-file entypo"><a href="$1">$2</a></li>""" % [relpath, name]
let ul = """
<ul>
$1
</ul>
""" % [files.join("\n")]
res = (code: Http200, content: h_page(settings, ul, title), headers: newStringTable())
return res
proc printReqInfo(settings: NimHttpSettings, req: Request) =
if not settings.logging:
return
echo getLocalTime(getTime()), " - ", req.hostname, " ", req.reqMethod, " ", req.url.path
proc handleCtrlC() {.noconv.} =
echo "\nExiting..."
quit()
setControlCHook(handleCtrlC)
proc serve*(settings: NimHttpSettings) =
var server = newAsyncHttpServer()
proc handleHttpRequest(req: Request): Future[void] {.async.} =
printReqInfo(settings, req)
let path = settings.directory/req.url.path.replace("%20", " ")
var res: NimHttpResponse
if req.reqMethod != "get":
res = sendNotImplemented(settings, path)
elif path.existsDir:
res = sendDirContents(settings, path)
elif path.existsFile:
res = sendStaticFile(settings, path)
else:
res = sendNotFound(settings, path)
await req.respond(res.code, res.content, res.headers)
echo settings.appname, " v", settings.appversion, " started on port ", int(settings.port), "."
echo "Serving directory ", settings.directory
asyncCheck server.serve(settings.port, handleHttpRequest, settings.address)
when isMainModule:
var port = Port(1337)
var address = ""
var logging = false
var www = getCurrentDir()
for kind, key, val in getopt():
case kind
of cmdLongOption, cmdShortOption:
case key
of "log", "l":
logging = true
of "help", "h":
echo usage
quit(0)
of "version", "v":
echo appversion
quit(0)
of "port", "p":
try:
port = Port(val.parseInt)
except:
if val == "":
echo "Port not set."
quit(2)
else:
echo "Error: Invalid port: '", val, "'"
echo "Running on default port instead."
else:
discard
of cmdArgument:
var dir: string
if key.isAbsolute:
dir = key
else:
dir = www/key
if dir.existsDir:
www = expandFilename dir
else:
echo "Error: Directory '"&dir&"' does not exist."
quit(1)
else:
discard
var settings: NimHttpSettings
settings.directory = www
settings.logging = logging
settings.mimes = newMimeTypes()
settings.address = address
settings.appname = appname
settings.appversion = appversion
settings.port = port
serve(settings)
runForever()
|