86 lines
1.8 KiB
Go
86 lines
1.8 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information
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package simulate
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import (
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"context"
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"net/http"
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"regexp"
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"strings"
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"github.com/spacemonkeygo/monkit/v3"
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"github.com/zeebo/errs"
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"storj.io/storj/private/post"
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"storj.io/storj/satellite/mailservice"
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)
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var mon = monkit.Package()
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var _ mailservice.Sender = (*LinkClicker)(nil)
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// LinkClicker is mailservice.Sender that click all links from html msg parts.
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//
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// architecture: Service
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type LinkClicker struct{}
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// FromAddress return empty mail address.
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func (clicker *LinkClicker) FromAddress() post.Address {
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return post.Address{}
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}
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// SendEmail click all links from email html parts.
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func (clicker *LinkClicker) SendEmail(ctx context.Context, msg *post.Message) (err error) {
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defer mon.Task()(&ctx)(&err)
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// dirty way to find links without pulling in a html dependency
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regx := regexp.MustCompile(`href="([^\s])+"`)
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// collect all links
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var links []string
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for _, part := range msg.Parts {
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tags := findLinkTags(part.Content)
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for _, tag := range tags {
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href := regx.FindString(tag)
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if href == "" {
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continue
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}
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links = append(links, href[len(`href="`):len(href)-1])
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}
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}
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// click all links
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var sendError error
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for _, link := range links {
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response, err := http.Get(link)
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if err != nil {
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continue
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}
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sendError = errs.Combine(sendError, err, response.Body.Close())
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}
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return sendError
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}
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func findLinkTags(body string) []string {
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var tags []string
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Loop:
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for {
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stTag := strings.Index(body, "<a")
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if stTag < 0 {
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break Loop
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}
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stripped := body[stTag:]
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endTag := strings.Index(stripped, "</a>")
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if endTag < 0 {
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break Loop
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}
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offset := endTag + len("</a>") + 1
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body = stripped[offset:]
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tags = append(tags, stripped[:offset])
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}
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return tags
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}
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