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Fix crash when CGI processes end without writing anything at all to stdout. Closes #38.

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This commit is contained in:
Solderpunk 2023-03-22 21:03:30 +01:00
parent 4b54eb6134
commit 2c3225c1c0
1 changed files with 11 additions and 3 deletions
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14
dynamic.go
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@ -73,15 +73,23 @@ func handleCGI(config SysConfig, path string, cgiPath string, URL *url.URL, logE
return
}
// Extract response header
header, _, err := bufio.NewReader(strings.NewReader(string(response))).ReadLine()
status, err2 := strconv.Atoi(strings.Fields(string(header))[0])
if err != nil || err2 != nil {
responseString := string(response)
if len(responseString) == 0 {
log.Println("Received no response from CGI process " + path)
conn.Write([]byte("42 CGI error!\r\n"))
logEntry.Status = 42
return
}
header, _, _ := bufio.NewReader(strings.NewReader(string(response))).ReadLine()
status, err := strconv.Atoi(strings.Fields(string(header))[0])
if err != nil {
log.Println("Unable to parse first line of output from CGI process " + path + " as valid Gemini response header. Line was: " + string(header))
conn.Write([]byte("42 CGI error!\r\n"))
logEntry.Status = 42
return
}
logEntry.Status = status
// Write response
conn.Write(response)
}