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// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package handler // import "miniflux.app/v2/internal/reader/handler"
import (
"fmt"
"time"
"miniflux.app/v2/internal/config"
"miniflux.app/v2/internal/errors"
"miniflux.app/v2/internal/http/client"
"miniflux.app/v2/internal/integration"
"miniflux.app/v2/internal/locale"
"miniflux.app/v2/internal/logger"
"miniflux.app/v2/internal/model"
"miniflux.app/v2/internal/reader/browser"
"miniflux.app/v2/internal/reader/icon"
"miniflux.app/v2/internal/reader/parser"
"miniflux.app/v2/internal/reader/processor"
"miniflux.app/v2/internal/storage"
"miniflux.app/v2/internal/timer"
)
var (
errDuplicate = "This feed already exists (%s)"
errNotFound = "Feed %d not found"
errCategoryNotFound = "Category not found for this user"
)
// CreateFeed fetch, parse and store a new feed.
func CreateFeed(store *storage.Storage, userID int64, feedCreationRequest *model.FeedCreationRequest) (*model.Feed, error) {
defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[CreateFeed] FeedURL=%s", feedCreationRequest.FeedURL))
user, storeErr := store.UserByID(userID)
if storeErr != nil {
return nil, storeErr
}
if !store.CategoryIDExists(userID, feedCreationRequest.CategoryID) {
return nil, errors.NewLocalizedError(errCategoryNotFound)
}
request := client.NewClientWithConfig(feedCreationRequest.FeedURL, config.Opts)
request.WithCredentials(feedCreationRequest.Username, feedCreationRequest.Password)
request.WithUserAgent(feedCreationRequest.UserAgent)
request.WithCookie(feedCreationRequest.Cookie)
request.AllowSelfSignedCertificates = feedCreationRequest.AllowSelfSignedCertificates
if feedCreationRequest.FetchViaProxy {
request.WithProxy()
}
response, requestErr := browser.Exec(request)
if requestErr != nil {
return nil, requestErr
}
if store.FeedURLExists(userID, response.EffectiveURL) {
return nil, errors.NewLocalizedError(errDuplicate, response.EffectiveURL)
}
subscription, parseErr := parser.ParseFeed(response.EffectiveURL, response.BodyAsString())
if parseErr != nil {
return nil, parseErr
}
subscription.UserID = userID
subscription.UserAgent = feedCreationRequest.UserAgent
subscription.Cookie = feedCreationRequest.Cookie
subscription.Username = feedCreationRequest.Username
subscription.Password = feedCreationRequest.Password
subscription.Crawler = feedCreationRequest.Crawler
subscription.Disabled = feedCreationRequest.Disabled
subscription.IgnoreHTTPCache = feedCreationRequest.IgnoreHTTPCache
subscription.AllowSelfSignedCertificates = feedCreationRequest.AllowSelfSignedCertificates
subscription.FetchViaProxy = feedCreationRequest.FetchViaProxy
subscription.ScraperRules = feedCreationRequest.ScraperRules
subscription.RewriteRules = feedCreationRequest.RewriteRules
subscription.BlocklistRules = feedCreationRequest.BlocklistRules
subscription.KeeplistRules = feedCreationRequest.KeeplistRules
subscription.UrlRewriteRules = feedCreationRequest.UrlRewriteRules
subscription.WithCategoryID(feedCreationRequest.CategoryID)
subscription.WithClientResponse(response)
subscription.CheckedNow()
processor.ProcessFeedEntries(store, subscription, user, true)
if storeErr := store.CreateFeed(subscription); storeErr != nil {
return nil, storeErr
}
logger.Debug("[CreateFeed] Feed saved with ID: %d", subscription.ID)
checkFeedIcon(
store,
subscription.ID,
subscription.SiteURL,
subscription.IconURL,
feedCreationRequest.UserAgent,
feedCreationRequest.FetchViaProxy,
feedCreationRequest.AllowSelfSignedCertificates,
)
return subscription, nil
}
// RefreshFeed refreshes a feed.
func RefreshFeed(store *storage.Storage, userID, feedID int64, forceRefresh bool) error {
defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[RefreshFeed] feedID=%d", feedID))
user, storeErr := store.UserByID(userID)
if storeErr != nil {
return storeErr
}
printer := locale.NewPrinter(user.Language)
originalFeed, storeErr := store.FeedByID(userID, feedID)
if storeErr != nil {
return storeErr
}
if originalFeed == nil {
return errors.NewLocalizedError(errNotFound, feedID)
}
weeklyEntryCount := 0
if config.Opts.PollingScheduler() == model.SchedulerEntryFrequency {
var weeklyCountErr error
weeklyEntryCount, weeklyCountErr = store.WeeklyFeedEntryCount(userID, feedID)
if weeklyCountErr != nil {
return weeklyCountErr
}
}
originalFeed.CheckedNow()
originalFeed.ScheduleNextCheck(weeklyEntryCount)
request := client.NewClientWithConfig(originalFeed.FeedURL, config.Opts)
request.WithCredentials(originalFeed.Username, originalFeed.Password)
request.WithUserAgent(originalFeed.UserAgent)
request.WithCookie(originalFeed.Cookie)
request.AllowSelfSignedCertificates = originalFeed.AllowSelfSignedCertificates
if !originalFeed.IgnoreHTTPCache {
request.WithCacheHeaders(originalFeed.EtagHeader, originalFeed.LastModifiedHeader)
}
if originalFeed.FetchViaProxy {
request.WithProxy()
}
response, requestErr := browser.Exec(request)
if requestErr != nil {
originalFeed.WithError(requestErr.Localize(printer))
store.UpdateFeedError(originalFeed)
return requestErr
}
if store.AnotherFeedURLExists(userID, originalFeed.ID, response.EffectiveURL) {
storeErr := errors.NewLocalizedError(errDuplicate, response.EffectiveURL)
originalFeed.WithError(storeErr.Error())
store.UpdateFeedError(originalFeed)
return storeErr
}
if originalFeed.IgnoreHTTPCache || response.IsModified(originalFeed.EtagHeader, originalFeed.LastModifiedHeader) {
logger.Debug("[RefreshFeed] Feed #%d has been modified", feedID)
updatedFeed, parseErr := parser.ParseFeed(response.EffectiveURL, response.BodyAsString())
if parseErr != nil {
originalFeed.WithError(parseErr.Localize(printer))
store.UpdateFeedError(originalFeed)
return parseErr
}
originalFeed.Entries = updatedFeed.Entries
processor.ProcessFeedEntries(store, originalFeed, user, forceRefresh)
// We don't update existing entries when the crawler is enabled (we crawl only inexisting entries). Unless it is forced to refresh
updateExistingEntries := forceRefresh || !originalFeed.Crawler
newEntries, storeErr := store.RefreshFeedEntries(originalFeed.UserID, originalFeed.ID, originalFeed.Entries, updateExistingEntries)
if storeErr != nil {
originalFeed.WithError(storeErr.Error())
store.UpdateFeedError(originalFeed)
return storeErr
}
userIntegrations, intErr := store.Integration(userID)
if intErr != nil {
logger.Error("[RefreshFeed] Fetching integrations for user %d failed: %v; the refresh process will go on, but no integrations will run this time.", userID, intErr)
} else if userIntegrations != nil && len(newEntries) > 0 {
go integration.PushEntries(originalFeed, newEntries, userIntegrations)
}
// We update caching headers only if the feed has been modified,
// because some websites don't return the same headers when replying with a 304.
originalFeed.WithClientResponse(response)
checkFeedIcon(
store,
originalFeed.ID,
originalFeed.SiteURL,
updatedFeed.IconURL,
originalFeed.UserAgent,
originalFeed.FetchViaProxy,
originalFeed.AllowSelfSignedCertificates,
)
} else {
logger.Debug("[RefreshFeed] Feed #%d not modified", feedID)
}
originalFeed.ResetErrorCounter()
if storeErr := store.UpdateFeed(originalFeed); storeErr != nil {
originalFeed.WithError(storeErr.Error())
store.UpdateFeedError(originalFeed)
return storeErr
}
return nil
}
func checkFeedIcon(store *storage.Storage, feedID int64, websiteURL, feedIconURL, userAgent string, fetchViaProxy, allowSelfSignedCertificates bool) {
if !store.HasIcon(feedID) {
icon, err := icon.FindIcon(websiteURL, feedIconURL, userAgent, fetchViaProxy, allowSelfSignedCertificates)
if err != nil {
logger.Debug(`[CheckFeedIcon] %v (feedID=%d websiteURL=%s)`, err, feedID, websiteURL)
} else if icon == nil {
logger.Debug(`[CheckFeedIcon] No icon found (feedID=%d websiteURL=%s)`, feedID, websiteURL)
} else {
if err := store.CreateFeedIcon(feedID, icon); err != nil {
logger.Debug(`[CheckFeedIcon] %v (feedID=%d websiteURL=%s)`, err, feedID, websiteURL)
}
}
}
}
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