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// Copyright (c) 2013-2024 by Michael Dvorkin and contributors. All Rights Reserved.
// Use of this source code is governed by a MIT-style license that can
// be found in the LICENSE file.
package mop
import (
"io"
"net/http"
"net/url"
"regexp"
"strconv"
"strings"
)
const crumbURL = "https://query1.finance.yahoo.com/v1/test/getcrumb"
const cookieURL = "https://finance.yahoo.com/"
const userAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0"
const euConsentURL = "https://consent.yahoo.com/v2/collectConsent?sessionId="
func fetchCrumb(cookies string) string {
client := http.Client{}
request, err := http.NewRequest("GET", crumbURL, nil)
if err != nil {
panic(err)
}
request.Header = http.Header{
"Accept": {"*/*"},
"Accept-Encoding": {"gzip, deflate, br"},
"Accept-Language": {"en-US,en;q=0.5"},
"Connection": {"keep-alive"},
"Content-Type": {"text/plain"},
"Cookie": {cookies},
"Host": {"query1.finance.yahoo.com"},
"Sec-Fetch-Dest": {"empty"},
"Sec-Fetch-Mode": {"cors"},
"Sec-Fetch-Site": {"same-site"},
"TE": {"trailers"},
"User-Agent": {userAgent},
}
response, err := client.Do(request)
if err != nil {
panic(err)
}
defer response.Body.Close()
body, err := io.ReadAll(response.Body)
if err != nil {
panic(err)
}
return string(body[:])
}
func fetchCookies() string {
client := http.Client{}
var cookies []*http.Cookie
// Get the session ID from the first request
request, err := http.NewRequest("GET", cookieURL, nil)
if err != nil {
panic(err)
}
request.Header = http.Header{
"Authority": {"finance.yahoo.com"},
"Accept": {"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7"},
"Accept-Encoding": {"gzip, deflate, br"},
"Accept-Language": {"en-US,en;q=0.9"},
"Sec-Fetch-Dest": {"document"},
"Sec-Fetch-Mode": {"navigate"},
"Sec-Fetch-Site": {"none"},
"Sec-Fetch-User": {"?1"},
"Upgrade-Insecure-Requests": {"1"},
"User-Agent": {userAgent},
}
response, err := client.Do(request)
if err != nil {
panic(err)
}
defer response.Body.Close()
cookieA1 := getA1Cookie(response.Cookies())
if cookieA1 != "" {
return cookieA1
}
// first pass failed - try EU shenanigans
sessionRegex := regexp.MustCompile("sessionId=(?:([A-Za-z0-9_-]*))")
sessionID := sessionRegex.FindStringSubmatch(response.Request.URL.RawQuery)[1]
csrfRegex := regexp.MustCompile("gcrumb=(?:([A-Za-z0-9_]*))")
csrfToken := csrfRegex.FindStringSubmatch(response.Request.Response.Request.URL.RawQuery)[1]
gucsCookie := response.Request.Response.Request.Response.Cookies()
var gucsCookieString string = ""
for _, cookie := range gucsCookie {
gucsCookieString += cookie.Name + "=" + cookie.Value + "; "
}
gucsCookieString = strings.TrimSuffix(gucsCookieString, "; ")
if len(gucsCookie) == 0 {
panic(err)
}
// Create a new request to agree to the EU consent request
form := url.Values{}
form.Add("csrfToken", csrfToken)
form.Add("sessionId", sessionID)
form.Add("namespace", "yahoo")
form.Add("agree", "agree")
request2, err := http.NewRequest("POST", euConsentURL+sessionID, strings.NewReader(form.Encode()))
if err != nil {
panic(err)
}
contentLength := strconv.FormatInt(int64(len(form.Encode())), 10)
request2.Header = http.Header{
"Accept": {"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7"},
"Accept-Encoding": {"gzip, deflate, br"},
"Accept-Language": {"en-US,en;q=0.9"},
"Connection": {"keep-alive"},
"Cookie": {gucsCookieString},
"Content-Length": {contentLength},
"Content-Type": {"application/x-www-form-urlencoded"},
"DNT": {"1"},
"Host": {"consent.yahoo.com"},
"Origin": {"https://consent.yahoo.com"},
"Referer": {euConsentURL + sessionID},
"Sec-Fetch-Dest": {"document"},
"Sec-Fetch-Mode": {"navigate"},
"Sec-Fetch-Site": {"same-origin"},
"Sec-Fetch-User": {"?1"},
"Upgrade-Insecure-Requests": {"1"},
"User-Agent": {userAgent},
}
response2, err := client.Do(request2)
if err != nil {
panic(err)
}
defer response2.Body.Close()
// redirect festival
cookies = response2.Request.Response.Request.Response.Request.Response.Cookies()
cookieA1 = getA1Cookie(cookies)
if cookieA1 != "" {
return cookieA1
} else {
panic(err)
}
}
func getA1Cookie(cookies []*http.Cookie) string {
for _, cookie := range cookies {
if cookie.Name == "A1" {
return cookie.Name + "=" + cookie.Value + "; "
}
}
return ""
}
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