| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package whoisquery |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | "strings" |
| 9 | "time" |
| 10 | |
| 11 | "github.com/araddon/dateparse" |
| 12 | "github.com/likexian/whois" |
| 13 | whoisparser "github.com/likexian/whois-parser" |
| 14 | ) |
| 15 | |
| 16 | type provider interface { |
| 17 | remainingTime() (float64, error) |
| 18 | } |
| 19 | |
| 20 | type whoisClient struct { |
| 21 | domainAddress string |
| 22 | client *whois.Client |
| 23 | } |
| 24 | |
| 25 | func newProvider(config Config) (provider, error) { |
| 26 | domain := config.Source |
| 27 | client := whois.NewClient() |
| 28 | client.SetTimeout(config.Timeout.Duration()) |
| 29 | |
| 30 | return &whoisClient{ |
| 31 | domainAddress: domain, |
| 32 | client: client, |
| 33 | }, nil |
| 34 | } |
| 35 | |
| 36 | func (c *whoisClient) remainingTime() (float64, error) { |
| 37 | info, err := c.queryWhoisInfo() |
| 38 | if err != nil { |
| 39 | return 0, err |
| 40 | } |
| 41 | |
| 42 | if info.Domain.ExpirationDate == "" { |
| 43 | if !strings.HasPrefix(c.domainAddress, "=") { |
| 44 | // some servers support requesting extended data |
| 45 | // https://github.com/netdata/netdata/issues/17907#issuecomment-2171758380 |
| 46 | c.domainAddress = fmt.Sprintf("= %s", c.domainAddress) |
| 47 | return c.remainingTime() |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | return parseWhoisInfoExpirationDate(info) |
| 52 | } |
| 53 | |
| 54 | func (c *whoisClient) queryWhoisInfo() (*whoisparser.WhoisInfo, error) { |
| 55 | resp, err := c.client.Whois(c.domainAddress) |
| 56 | if err != nil { |
| 57 | return nil, err |
| 58 | } |
| 59 | |
| 60 | info, err := whoisparser.Parse(resp) |
| 61 | if err != nil { |
| 62 | return nil, err |
| 63 | } |
| 64 | |
| 65 | return &info, nil |
| 66 | } |
| 67 | |
| 68 | func parseWhoisInfoExpirationDate(info *whoisparser.WhoisInfo) (float64, error) { |
| 69 | if info == nil || info.Domain == nil { |
| 70 | return 0, errors.New("nil Whois Info") |
| 71 | } |
| 72 | |
| 73 | if info.Domain.ExpirationDateInTime != nil { |
| 74 | return time.Until(*info.Domain.ExpirationDateInTime).Seconds(), nil |
| 75 | } |
| 76 | |
| 77 | date := info.Domain.ExpirationDate |
| 78 | if date == "" { |
| 79 | return 0, errors.New("no expiration date") |
| 80 | } |
| 81 | |
| 82 | if strings.Contains(date, " ") { |
| 83 | // https://community.netdata.cloud/t/whois-query-monitor-cannot-parse-expiration-time/3485 |
| 84 | if v, err := time.Parse("2006.01.02 15:04:05", date); err == nil { |
| 85 | return time.Until(v).Seconds(), nil |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | expire, err := dateparse.ParseAny(date) |
| 90 | if err != nil { |
| 91 | return 0, err |
| 92 | } |
| 93 | |
| 94 | return time.Until(expire).Seconds(), nil |
| 95 | } |