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further hardening of asynchttpserver

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This commit is contained in:
Andreas Rumpf
2017-11-19 03:05:55 +01:00
parent 55cdaaef6f
commit c474fdea16
1 changed files with 5 additions and 6 deletions
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11
lib/pure/asynchttpserver.nim
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@@ -125,9 +125,9 @@ proc parseProtocol(protocol: string): tuple[orig: string, major, minor: int] =
raise newException(ValueError, "Invalid request protocol. Got: " &
protocol)
result.orig = protocol
i.inc protocol.parseInt(result.major, i)
i.inc protocol.parseSaturatedNatural(result.major, i)
i.inc # Skip .
i.inc protocol.parseInt(result.minor, i)
i.inc protocol.parseSaturatedNatural(result.minor, i)
proc sendStatus(client: AsyncSocket, status: string): Future[void] =
client.send("HTTP/1.1 " & status & "\c\L\c\L")
@@ -230,8 +230,7 @@ proc processRequest(server: AsyncHttpServer, req: FutureVar[Request],
# - Check for Content-length header
if request.headers.hasKey("Content-Length"):
var contentLength = 0
if parseInt(request.headers["Content-Length"],
contentLength) == 0:
if parseSaturatedNatural(request.headers["Content-Length"], contentLength) == 0:
await request.respond(Http400, "Bad Request. Invalid Content-Length.")
return
else:
@@ -254,9 +253,9 @@ proc processRequest(server: AsyncHttpServer, req: FutureVar[Request],
# Persistent connections
if (request.protocol == HttpVer11 and
request.headers.getOrDefault("connection").normalize != "close") or
cmpIgnoreCase(request.headers.getOrDefault("connection"), "close") != 0) or
(request.protocol == HttpVer10 and
request.headers.getOrDefault("connection").normalize == "keep-alive"):
cmpIgnoreCase(request.headers.getOrDefault("connection"), "keep-alive") == 0):
# In HTTP 1.1 we assume that connection is persistent. Unless connection
# header states otherwise.
# In HTTP 1.0 we assume that the connection should not be persistent.