mirror of https://github.com/miniflux/v2.git
416 lines
12 KiB
Go
416 lines
12 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package processor
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import (
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"errors"
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"fmt"
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"log/slog"
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"regexp"
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"slices"
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"strconv"
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"time"
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"miniflux.app/v2/internal/config"
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"miniflux.app/v2/internal/metric"
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"miniflux.app/v2/internal/model"
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"miniflux.app/v2/internal/reader/fetcher"
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"miniflux.app/v2/internal/reader/readingtime"
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"miniflux.app/v2/internal/reader/rewrite"
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"miniflux.app/v2/internal/reader/sanitizer"
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"miniflux.app/v2/internal/reader/scraper"
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"miniflux.app/v2/internal/storage"
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"github.com/PuerkitoBio/goquery"
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)
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var (
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youtubeRegex = regexp.MustCompile(`youtube\.com/watch\?v=(.*)$`)
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odyseeRegex = regexp.MustCompile(`^https://odysee\.com`)
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iso8601Regex = regexp.MustCompile(`^P((?P<year>\d+)Y)?((?P<month>\d+)M)?((?P<week>\d+)W)?((?P<day>\d+)D)?(T((?P<hour>\d+)H)?((?P<minute>\d+)M)?((?P<second>\d+)S)?)?$`)
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customReplaceRuleRegex = regexp.MustCompile(`rewrite\("(.*)"\|"(.*)"\)`)
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)
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// ProcessFeedEntries downloads original web page for entries and apply filters.
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func ProcessFeedEntries(store *storage.Storage, feed *model.Feed, user *model.User, forceRefresh bool) {
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var filteredEntries model.Entries
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// Process older entries first
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for i := len(feed.Entries) - 1; i >= 0; i-- {
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entry := feed.Entries[i]
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slog.Debug("Processing entry",
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slog.Int64("user_id", user.ID),
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slog.Int64("entry_id", entry.ID),
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slog.String("entry_url", entry.URL),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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)
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if isBlockedEntry(feed, entry) || !isAllowedEntry(feed, entry) {
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continue
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}
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websiteURL := getUrlFromEntry(feed, entry)
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entryIsNew := !store.EntryURLExists(feed.ID, entry.URL)
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if feed.Crawler && (entryIsNew || forceRefresh) {
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slog.Debug("Scraping entry",
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slog.Int64("user_id", user.ID),
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slog.Int64("entry_id", entry.ID),
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slog.String("entry_url", entry.URL),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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)
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startTime := time.Now()
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requestBuilder := fetcher.NewRequestBuilder()
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requestBuilder.WithUserAgent(feed.UserAgent, config.Opts.HTTPClientUserAgent())
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requestBuilder.WithCookie(feed.Cookie)
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requestBuilder.WithTimeout(config.Opts.HTTPClientTimeout())
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requestBuilder.WithProxy(config.Opts.HTTPClientProxy())
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requestBuilder.UseProxy(feed.FetchViaProxy)
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requestBuilder.IgnoreTLSErrors(feed.AllowSelfSignedCertificates)
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requestBuilder.DisableHTTP2(feed.DisableHTTP2)
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content, scraperErr := scraper.ScrapeWebsite(
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requestBuilder,
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websiteURL,
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feed.ScraperRules,
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)
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if config.Opts.HasMetricsCollector() {
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status := "success"
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if scraperErr != nil {
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status = "error"
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}
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metric.ScraperRequestDuration.WithLabelValues(status).Observe(time.Since(startTime).Seconds())
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}
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if scraperErr != nil {
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slog.Warn("Unable to scrape entry",
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slog.Int64("user_id", user.ID),
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slog.Int64("entry_id", entry.ID),
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slog.String("entry_url", entry.URL),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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slog.Any("error", scraperErr),
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)
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} else if content != "" {
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// We replace the entry content only if the scraper doesn't return any error.
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entry.Content = content
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}
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}
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rewrite.Rewriter(websiteURL, entry, feed.RewriteRules)
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// The sanitizer should always run at the end of the process to make sure unsafe HTML is filtered.
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entry.Content = sanitizer.Sanitize(websiteURL, entry.Content)
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updateEntryReadingTime(store, feed, entry, entryIsNew, user)
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filteredEntries = append(filteredEntries, entry)
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}
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feed.Entries = filteredEntries
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}
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func isBlockedEntry(feed *model.Feed, entry *model.Entry) bool {
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if feed.BlocklistRules == "" {
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return false
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}
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compiledBlocklist, err := regexp.Compile(feed.BlocklistRules)
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if err != nil {
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slog.Debug("Failed on regexp compilation",
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slog.String("pattern", feed.BlocklistRules),
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slog.Any("error", err),
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)
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return false
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}
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containsBlockedTag := slices.ContainsFunc(entry.Tags, func(tag string) bool {
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return compiledBlocklist.MatchString(tag)
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})
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if compiledBlocklist.MatchString(entry.URL) || compiledBlocklist.MatchString(entry.Title) || compiledBlocklist.MatchString(entry.Author) || containsBlockedTag {
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slog.Debug("Blocking entry based on rule",
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slog.Int64("entry_id", entry.ID),
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slog.String("entry_url", entry.URL),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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slog.String("rule", feed.BlocklistRules),
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)
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return true
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}
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return false
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}
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func isAllowedEntry(feed *model.Feed, entry *model.Entry) bool {
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if feed.KeeplistRules == "" {
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return true
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}
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compiledKeeplist, err := regexp.Compile(feed.KeeplistRules)
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if err != nil {
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slog.Debug("Failed on regexp compilation",
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slog.String("pattern", feed.KeeplistRules),
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slog.Any("error", err),
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)
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return false
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}
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containsAllowedTag := slices.ContainsFunc(entry.Tags, func(tag string) bool {
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return compiledKeeplist.MatchString(tag)
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})
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if compiledKeeplist.MatchString(entry.URL) || compiledKeeplist.MatchString(entry.Title) || compiledKeeplist.MatchString(entry.Author) || containsAllowedTag {
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slog.Debug("Allow entry based on rule",
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slog.Int64("entry_id", entry.ID),
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slog.String("entry_url", entry.URL),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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slog.String("rule", feed.KeeplistRules),
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)
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return true
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}
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return false
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}
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// ProcessEntryWebPage downloads the entry web page and apply rewrite rules.
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func ProcessEntryWebPage(feed *model.Feed, entry *model.Entry, user *model.User) error {
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startTime := time.Now()
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websiteURL := getUrlFromEntry(feed, entry)
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requestBuilder := fetcher.NewRequestBuilder()
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requestBuilder.WithUserAgent(feed.UserAgent, config.Opts.HTTPClientUserAgent())
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requestBuilder.WithCookie(feed.Cookie)
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requestBuilder.WithTimeout(config.Opts.HTTPClientTimeout())
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requestBuilder.WithProxy(config.Opts.HTTPClientProxy())
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requestBuilder.UseProxy(feed.FetchViaProxy)
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requestBuilder.IgnoreTLSErrors(feed.AllowSelfSignedCertificates)
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requestBuilder.DisableHTTP2(feed.DisableHTTP2)
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content, scraperErr := scraper.ScrapeWebsite(
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requestBuilder,
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websiteURL,
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feed.ScraperRules,
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)
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if config.Opts.HasMetricsCollector() {
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status := "success"
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if scraperErr != nil {
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status = "error"
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}
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metric.ScraperRequestDuration.WithLabelValues(status).Observe(time.Since(startTime).Seconds())
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}
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if scraperErr != nil {
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return scraperErr
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}
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if content != "" {
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entry.Content = content
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if user.ShowReadingTime {
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entry.ReadingTime = readingtime.EstimateReadingTime(entry.Content, user.DefaultReadingSpeed, user.CJKReadingSpeed)
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}
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}
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rewrite.Rewriter(websiteURL, entry, entry.Feed.RewriteRules)
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entry.Content = sanitizer.Sanitize(websiteURL, entry.Content)
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return nil
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}
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func getUrlFromEntry(feed *model.Feed, entry *model.Entry) string {
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var url = entry.URL
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if feed.UrlRewriteRules != "" {
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parts := customReplaceRuleRegex.FindStringSubmatch(feed.UrlRewriteRules)
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if len(parts) >= 3 {
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re := regexp.MustCompile(parts[1])
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url = re.ReplaceAllString(entry.URL, parts[2])
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slog.Debug("Rewriting entry URL",
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slog.Int64("entry_id", entry.ID),
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slog.String("original_entry_url", entry.URL),
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slog.String("rewritten_entry_url", url),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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)
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} else {
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slog.Debug("Cannot find search and replace terms for replace rule",
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slog.Int64("entry_id", entry.ID),
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slog.String("original_entry_url", entry.URL),
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slog.String("rewritten_entry_url", url),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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slog.String("url_rewrite_rules", feed.UrlRewriteRules),
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)
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}
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}
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return url
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}
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func updateEntryReadingTime(store *storage.Storage, feed *model.Feed, entry *model.Entry, entryIsNew bool, user *model.User) {
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if shouldFetchYouTubeWatchTime(entry) {
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if entryIsNew {
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watchTime, err := fetchYouTubeWatchTime(entry.URL)
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if err != nil {
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slog.Warn("Unable to fetch YouTube watch time",
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slog.Int64("user_id", user.ID),
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slog.Int64("entry_id", entry.ID),
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slog.String("entry_url", entry.URL),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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slog.Any("error", err),
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)
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}
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entry.ReadingTime = watchTime
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} else {
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entry.ReadingTime = store.GetReadTime(entry, feed)
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}
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}
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if shouldFetchOdyseeWatchTime(entry) {
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if entryIsNew {
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watchTime, err := fetchOdyseeWatchTime(entry.URL)
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if err != nil {
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slog.Warn("Unable to fetch Odysee watch time",
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slog.Int64("user_id", user.ID),
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slog.Int64("entry_id", entry.ID),
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slog.String("entry_url", entry.URL),
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slog.Int64("feed_id", feed.ID),
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slog.String("feed_url", feed.FeedURL),
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slog.Any("error", err),
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)
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}
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entry.ReadingTime = watchTime
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} else {
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entry.ReadingTime = store.GetReadTime(entry, feed)
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}
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}
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// Handle YT error case and non-YT entries.
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if entry.ReadingTime == 0 {
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if user.ShowReadingTime {
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entry.ReadingTime = readingtime.EstimateReadingTime(entry.Content, user.DefaultReadingSpeed, user.CJKReadingSpeed)
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}
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}
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}
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func shouldFetchYouTubeWatchTime(entry *model.Entry) bool {
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if !config.Opts.FetchYouTubeWatchTime() {
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return false
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}
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matches := youtubeRegex.FindStringSubmatch(entry.URL)
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urlMatchesYouTubePattern := len(matches) == 2
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return urlMatchesYouTubePattern
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}
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func shouldFetchOdyseeWatchTime(entry *model.Entry) bool {
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if !config.Opts.FetchOdyseeWatchTime() {
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return false
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}
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matches := odyseeRegex.FindStringSubmatch(entry.URL)
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return matches != nil
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}
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func fetchYouTubeWatchTime(websiteURL string) (int, error) {
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requestBuilder := fetcher.NewRequestBuilder()
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requestBuilder.WithTimeout(config.Opts.HTTPClientTimeout())
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requestBuilder.WithProxy(config.Opts.HTTPClientProxy())
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responseHandler := fetcher.NewResponseHandler(requestBuilder.ExecuteRequest(websiteURL))
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defer responseHandler.Close()
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if localizedError := responseHandler.LocalizedError(); localizedError != nil {
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slog.Warn("Unable to fetch YouTube page", slog.String("website_url", websiteURL), slog.Any("error", localizedError.Error()))
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return 0, localizedError.Error()
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}
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doc, docErr := goquery.NewDocumentFromReader(responseHandler.Body(config.Opts.HTTPClientMaxBodySize()))
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if docErr != nil {
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return 0, docErr
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}
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durs, exists := doc.Find(`meta[itemprop="duration"]`).First().Attr("content")
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if !exists {
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return 0, errors.New("duration has not found")
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}
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dur, err := parseISO8601(durs)
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if err != nil {
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return 0, fmt.Errorf("unable to parse duration %s: %v", durs, err)
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}
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return int(dur.Minutes()), nil
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}
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func fetchOdyseeWatchTime(websiteURL string) (int, error) {
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requestBuilder := fetcher.NewRequestBuilder()
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requestBuilder.WithTimeout(config.Opts.HTTPClientTimeout())
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requestBuilder.WithProxy(config.Opts.HTTPClientProxy())
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responseHandler := fetcher.NewResponseHandler(requestBuilder.ExecuteRequest(websiteURL))
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defer responseHandler.Close()
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if localizedError := responseHandler.LocalizedError(); localizedError != nil {
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slog.Warn("Unable to fetch Odysee watch time", slog.String("website_url", websiteURL), slog.Any("error", localizedError.Error()))
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return 0, localizedError.Error()
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}
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doc, docErr := goquery.NewDocumentFromReader(responseHandler.Body(config.Opts.HTTPClientMaxBodySize()))
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if docErr != nil {
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return 0, docErr
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}
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durs, exists := doc.Find(`meta[property="og:video:duration"]`).First().Attr("content")
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// durs contains video watch time in seconds
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if !exists {
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return 0, errors.New("duration has not found")
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}
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dur, err := strconv.ParseInt(durs, 10, 64)
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if err != nil {
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return 0, fmt.Errorf("unable to parse duration %s: %v", durs, err)
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}
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return int(dur / 60), nil
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}
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// parseISO8601 parses an ISO 8601 duration string.
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func parseISO8601(from string) (time.Duration, error) {
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var match []string
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var d time.Duration
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if iso8601Regex.MatchString(from) {
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match = iso8601Regex.FindStringSubmatch(from)
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} else {
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return 0, errors.New("could not parse duration string")
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}
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for i, name := range iso8601Regex.SubexpNames() {
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part := match[i]
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if i == 0 || name == "" || part == "" {
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continue
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}
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val, err := strconv.ParseInt(part, 10, 64)
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if err != nil {
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return 0, err
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}
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switch name {
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case "hour":
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d += (time.Duration(val) * time.Hour)
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case "minute":
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d += (time.Duration(val) * time.Minute)
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case "second":
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d += (time.Duration(val) * time.Second)
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default:
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return 0, fmt.Errorf("unknown field %s", name)
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}
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}
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return d, nil
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}
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