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skip infinite loop in http parsing

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This commit is contained in:
Patricio Whittingslow
2026-01-01 12:21:58 -03:00
parent c6e88b1c3b
commit 5731a378dd
2 changed files with 41 additions and 25 deletions
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http/httpraw/parse.go
+10 -6
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@@ -98,6 +98,12 @@ func (hb *headerBuf) offBuf() []byte {
return hb.buf[hb.off:]
}
func (hb *headerBuf) skipLeadingCRLF() {
for hb.off < len(hb.buf) && (hb.buf[hb.off] == '\n' || hb.buf[hb.off] == '\r') {
hb.off++
}
}
func (hb *headerBuf) scanLine() []byte {
buf := hb.scanUntilByte('\n')
if len(buf) > 0 && buf[len(buf)-1] == '\r' {
@@ -122,9 +128,8 @@ func (hb *headerBuf) scanUntilByte(c byte) []byte {
func (hb *headerBuf) parseFirstLineRequest(initFlags flags) (method, uri, proto headerSlice, flags flags, err error) {
hb.off = 0 // Parsing first line resets offset.
var b []byte
for len(b) == 0 {
b = hb.scanLine()
}
hb.skipLeadingCRLF()
b = hb.scanLine()
flags = initFlags
if len(b) < 5 {
return method, uri, proto, flags, errNeedMore
@@ -154,9 +159,8 @@ func (hb *headerBuf) parseFirstLineRequest(initFlags flags) (method, uri, proto
func (hb *headerBuf) parseFirstLineResponse(initFlags flags) (statusCode, statusText headerSlice, flags flags, err error) {
hb.off = 0 // Parsing first line resets offset.
var b []byte
for len(b) == 0 {
b = hb.scanLine()
}
hb.skipLeadingCRLF()
b = hb.scanLine()
flags = initFlags
if len(b) < 5 {
return statusCode, statusText, flags, errNeedMore