110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
package request
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import (
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"fmt"
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"git.xdrm.io/go/websocket/internal/http/upgrade/request/parser/header"
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"git.xdrm.io/go/websocket/internal/http/upgrade/response"
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)
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// parseHeader parses any http request line
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// (header and request-line)
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func (r *T) parseHeader(b []byte) error {
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/* (1) First line -> GET {uri} HTTP/{version}
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---------------------------------------------------------*/
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if !r.first {
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err := r.request.Parse(b)
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if err != nil {
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r.code = response.BAD_REQUEST
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return &InvalidRequest{"Request-Line", err.Error()}
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}
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r.first = true
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return nil
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}
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/* (2) Other lines -> Header-Name: Header-Value
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---------------------------------------------------------*/
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/* (1) Try to parse header */
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head, err := header.Parse(b)
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if err != nil {
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r.code = response.BAD_REQUEST
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return fmt.Errorf("Error parsing header: %s", err)
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}
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/* (2) Manage header */
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switch head.Name {
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case header.HOST:
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err = r.extractHostPort(head.Values)
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case header.ORIGIN:
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err = r.extractOrigin(head.Values)
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case header.UPGRADE:
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err = r.checkUpgrade(head.Values)
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case header.CONNECTION:
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err = r.checkConnection(head.Values)
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case header.WSVERSION:
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err = r.checkVersion(head.Values)
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case header.WSKEY:
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err = r.extractKey(head.Values)
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case header.WSPROTOCOL:
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err = r.extractProtocols(head.Values)
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default:
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return nil
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}
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// dispatch error
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if err != nil {
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return err
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}
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return nil
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}
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// isComplete returns whether the Upgrade Request
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// is complete (no missing required item)
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func (r T) isComplete() error {
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/* (1) Request-Line */
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if !r.first {
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return &IncompleteRequest{"Request-Line"}
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}
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/* (2) Host */
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if len(r.host) == 0 {
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return &IncompleteRequest{"Host"}
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}
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/* (3) Origin */
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if !bypassOriginPolicy && len(r.origin) == 0 {
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return &IncompleteRequest{"Origin"}
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}
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/* (4) Connection */
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if !r.hasConnection {
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return &IncompleteRequest{"Connection"}
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}
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/* (5) Upgrade */
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if !r.hasUpgrade {
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return &IncompleteRequest{"Upgrade"}
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}
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/* (6) Sec-WebSocket-Version */
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if !r.hasVersion {
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return &IncompleteRequest{"Sec-WebSocket-Version"}
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}
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/* (7) Sec-WebSocket-Key */
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if len(r.key) < 1 {
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return &IncompleteRequest{"Sec-WebSocket-Key"}
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}
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return nil
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}
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