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feat(iplist): accept "source" as header name in addition to "network"

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Some deployments used "source,comment" as the CSV header for IP list
files, but the parser only recognized "network" as a header row.
Accept both "network" and "source" (case-insensitive) to avoid
treating the header as a (non-existent) domain entry.
This commit is contained in:
AJ ONeal 2026-09-18 22:59:45 -06:00
parent ca6e271f66
commit c6da1e7e4a
No known key found for this signature in database
1 changed files with 9 additions and 4 deletions
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13
net/iplist/iplist.go
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@ -228,8 +228,9 @@ func readSource(ctx context.Context, source, cacheDir string, seen map[string]st
}
// Parse reads TSV or CSV data from r and returns the first column of each
// row. Blank lines, comments (lines starting with #), and an optional
// "network" header on the first line are ignored. Other columns are
// row. Blank lines, comments (lines starting with #), and an optional header
// on the first line are ignored. The header is recognized when the first
// column is "network" or "source" (case-insensitive). Other columns are
// treated as labels and discarded.
//
// The format is auto-detected: if the first non-empty, non-comment line
@ -258,13 +259,17 @@ func isTSV(data []byte) bool {
return false
}
func isHeader(value string) bool {
return strings.EqualFold(value, "network") || strings.EqualFold(value, "source")
}
func parseTSV(r io.Reader) ([]string, error) {
scanner := bufio.NewScanner(r)
entries := make([]string, 0)
for line := 1; scanner.Scan(); line++ {
col, _, _ := strings.Cut(scanner.Text(), "\t")
value := strings.TrimSpace(col)
if value == "" || strings.HasPrefix(value, "#") || (line == 1 && strings.EqualFold(value, "network")) {
if value == "" || strings.HasPrefix(value, "#") || (line == 1 && isHeader(value)) {
continue
}
entries = append(entries, value)
@ -289,7 +294,7 @@ func parseCSV(r io.Reader) ([]string, error) {
continue
}
value := strings.TrimSpace(record[0])
if value == "" || (i == 0 && strings.EqualFold(value, "network")) {
if value == "" || (i == 0 && isHeader(value)) {
continue
}
entries = append(entries, value)