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initial parsing of requests

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This commit is contained in:
Henrik Sölver
2020-10-31 21:56:18 +01:00
parent e0ff8d79c3
commit ba905d3fcd
2 changed files with 101 additions and 12 deletions
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69
main.go
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@@ -2,6 +2,7 @@ package main
import (
"context"
"encoding/binary"
"ippserver/packages/mdnsserver"
"net/http"
@@ -25,12 +26,74 @@ func main() {
func handle(w http.ResponseWriter, r *http.Request) {
log.Infoln("handle")
if r.Method != "POST" {
if r.Method != http.MethodPost {
http.Error(w, "Unsupported method", http.StatusMethodNotAllowed)
}
// Disable caching of this page
var request ippRequest
request.operationAttributes = make(map[string]string)
request.requestedAttributes = make([]string, 0)
log.Info(r.Header)
log.Info(r.ContentLength)
//body := make([]byte, r.ContentLength)
//r.Body.Read(body)
binary.Read(r.Body, binary.BigEndian, &request.header.versionNumber)
binary.Read(r.Body, binary.BigEndian, &request.header.operationId)
binary.Read(r.Body, binary.BigEndian, &request.header.requestId)
var tag uint8
binary.Read(r.Body, binary.BigEndian, &tag)
if tag == operationAttributesTag {
var length uint16
binary.Read(r.Body, binary.BigEndian, &tag)
for tag != endOfAttributesTag {
log.Infof("Value tag %x", tag)
switch tag {
case charsetValueTag, uriValueTag, naturalLanguagageValueTag:
binary.Read(r.Body, binary.BigEndian, &length)
attributeName := make([]byte, length)
binary.Read(r.Body, binary.BigEndian, attributeName)
binary.Read(r.Body, binary.BigEndian, &length)
attributeValue := make([]byte, length)
binary.Read(r.Body, binary.BigEndian, attributeValue)
request.operationAttributes[string(attributeName)] = string(attributeValue)
log.Infof("%v %v", string(attributeName), string(attributeValue))
binary.Read(r.Body, binary.BigEndian, &tag)
case keywordValueTag:
binary.Read(r.Body, binary.BigEndian, &length)
attributeName := make([]byte, length)
set := make([]string, 0)
binary.Read(r.Body, binary.BigEndian, &attributeName)
binary.Read(r.Body, binary.BigEndian, &length)
value := make([]byte, length)
binary.Read(r.Body, binary.BigEndian, &value)
set = append(set, string(value))
binary.Read(r.Body, binary.BigEndian, &tag)
for tag == keywordValueTag {
var additionalValue uint16
binary.Read(r.Body, binary.BigEndian, &additionalValue)
binary.Read(r.Body, binary.BigEndian, &length)
value = make([]byte, length)
binary.Read(r.Body, binary.BigEndian, &value)
set = append(set, string(value))
binary.Read(r.Body, binary.BigEndian, &tag)
}
if string(attributeName) == "requested-attributes" {
request.requestedAttributes = set
}
log.Infof("%v %v", string(attributeName), set)
default:
log.Error("Unsupported tag")
// Check if user is logged in, if not redirect to login page
}
}
log.Infof("Value tag %x", tag)
} else {
log.Error("unexpected tag")
// TODO Return something sensible here
}
log.Infof("request %+v", request)
//log.Infof("Body %v", string(body))
}