92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
package plugins
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import (
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"io"
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"net/http"
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"regexp"
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"strings"
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"time"
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"github.com/matrix-org/gomatrix"
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)
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// Snap responds to OpenBSD snapshot checks
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type Snap struct {
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}
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// Descr describes this plugin
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func (p *Snap) Descr() string {
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return "checks the current build date of OpenBSD snapshots."
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}
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// Re returns the federation check matching string
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func (p *Snap) Re() string {
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return `(?i)^snap:$`
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}
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// Match determines if we should call the response for Snap
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func (p *Snap) Match(_, msg string) bool {
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re := regexp.MustCompile(p.Re())
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return re.MatchString(msg)
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}
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// SetStore we don't need a store here.
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func (p *Snap) SetStore(_ PluginStore) {}
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// Process does the heavy lifting
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func (p *Snap) Process(from, post string) string {
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snapResp, err := http.Get("https://ftp.usa.openbsd.org/pub/OpenBSD/snapshots/amd64/BUILDINFO")
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if err != nil {
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return err.Error()
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}
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defer snapResp.Body.Close()
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buildBody, err := io.ReadAll(snapResp.Body)
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if err != nil {
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return err.Error()
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}
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str := string(buildBody)
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parts := strings.Split(str, " - ")
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if len(parts) != 2 {
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return "Can't parse BUILDINFO"
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}
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snapDate, err := time.Parse(time.UnixDate, strings.TrimSpace(parts[1]))
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if err != nil {
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return err.Error()
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}
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pkgResp, err := http.Get("https://ftp3.usa.openbsd.org/pub/OpenBSD/snapshots/packages/amd64/SHA256")
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if err != nil {
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return err.Error()
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}
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defer pkgResp.Body.Close()
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lm := strings.TrimSpace(pkgResp.Header.Get("last-modified"))
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if lm == "" {
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return "Missing last-modified for SHA256"
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}
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pkgDate, err := time.Parse(time.RFC1123, lm)
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if lm == "" {
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return err.Error()
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}
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if pkgDate.Before(snapDate) {
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return "🔴: packages are behind snapshots. It is likely not safe to update currently!"
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}
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return "🟢:' It is safe to update your snapshot and packages!"
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}
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// RespondText to looking up of federation check requests
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func (p *Snap) RespondText(c *gomatrix.Client, ev *gomatrix.Event, _, _ string) error {
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return SendText(c, ev.RoomID, p.Process("", ""))
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}
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// Name Snap!
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func (p *Snap) Name() string {
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return "Snap"
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}
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