Eu quero acessar um site de jornal e baixar suas cópias de e-book (em PDF). O site exige que eu faça login usando meu endereço de e-mail e senha e, em seguida, permite-me acessar esses URLs em PDF.
Estou tendo problemas para "definir minha sessão" em Wget . Quando eu faço login no site pelo meu navegador, ele define dois valores de cookie:
[email protected]
Password=12345
Eu tentei:
wget --post-data "[email protected]&Password=12345" http://epaper.abc.com/login.aspx
No entanto, isso apenas fez o download da página de login e a salvou localmente.
O FORM na página de login tem dois campos:
txtUserID
txtPassword
E radiobuttons assim:
<input id="rbtnManchester" type="radio" checked="checked" name="txtpub" value="44">
Outro botão:
<input id="rbtnLondon" type="radio" name="txtpub" value="64">
Se eu postar isso na página login.aspx, recebo a mesma saída
wget --post-data "[email protected]&txtPassword=12345&txtpub=44" http://epaper.abc.com/login.aspx
Se eu fizer:
- save-cookies abc_cookies.txt
não parece ter nada além do conteúdo padrão.
Por último, se eu também --debug , diz:
...
Set-Cookie: ASP.NET_SessionId=05kphcn4hjmblq45qgnjoe41; path=/; HttpOnly
...
Stored cookie epaper.abc.com -1 (ANY) / <session> <insecure> [expiry none] ASP.NET_SessionId 05kphcn4hjmblq45qgnjoe41
Length: 107253 (105K) [text/html]
Saving to: 'login.aspx'
...
Saving cookies to abc_cookies.txt.
No entanto, abc_cookies.txt mostra APENAS o seguinte:
# HTTP cookie file.
# Generated by Wget on 2011-08-16 08:03:05.
# Edit at your own risk.
(Não sei ao certo por que não estou recebendo respostas no Stack Overflow - talvez o Superusuário seja um site melhor - Usando Deseja baixar arquivos PDF de um site que requer que os cookies sejam definidos .
C:\Temp>wget --cookies=on --keep-session-cookies --save-cookies abc_cookies.txt --post-data "txtUserID=abc%40gmail.com&txtPassword=password&txtpub=44&chkbox=checkbox&submit.x=48&submit.y=7" http://epaper.abc.com/login.aspx --debug
SYSTEM_WGETRC = c:/progra~1/wget/etc/wgetrc
syswgetrc = C:\Program Files (x86)\GnuWin32/etc/wgetrc
DEBUG output created by Wget 1.11.4 on Windows-MinGW.
--2011-08-18 08:15:59-- http://epaper.abc.com/login.aspx
Resolving epaper.abc.com... seconds 0.00, 999.999.99.99
Caching epaper.abc.com => 999.999.99.99
Connecting to epaper.abc.com|999.999.99.99|:80... seconds 0.00, connected.
Created socket 300.
Releasing 0x00a2ae80 (new refcount 1).
---request begin---
POST /login.aspx HTTP/1.0
User-Agent: Wget/1.11.4
Accept: */*
Host: epaper.abc.com
Connection: Keep-Alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 100
---request end---
[POST data: txtUserID=abc%40gmail.com&txtPassword=password&txtpub=44&chkbox=checkbox&submit.x=48&submit.y=7]
HTTP request sent, awaiting response...
---response begin---
HTTP/1.1 200 OK
Connection: keep-alive
Date: Thu, 18 Aug 2011 02:46:17 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Set-Cookie: ASP.NET_SessionId=owcrje55yl45kgmhn43gq145; path=/; HttpOnly
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 107253
---response end---
200 OK
Registered socket 300 for persistent reuse.
Stored cookie epaper.abc.com -1 (ANY) / <session> <insecure> [expiry none] ASP.NET_SessionId owcrje55yl45kgmhn43gq145
Length: 107253 (105K) [text/html]
Saving to: 'login.aspx.1'
100%[======================================================================================================================>] 107,253 24.9K/s in 4.2s
2011-08-18 08:16:05 (24.9 KB/s) - 'login.aspx.1' saved [107253/107253]
Saving cookies to abc_cookies.txt.
Done saving cookies.
C:\Temp>wget --referer=http://epaper.abc.com/login.aspx --cookies=on --load-cookies abc_cookies.txt --keep-session-cookies --save-cookies abc_cookies.txt http://epaper.abc.com/PagePrint/16_08_2011_001.pdf --debug
SYSTEM_WGETRC = c:/progra~1/wget/etc/wgetrc
syswgetrc = C:\Program Files (x86)\GnuWin32/etc/wgetrc
DEBUG output created by Wget 1.11.4 on Windows-MinGW.
Stored cookie epaper.abc.com -1 (ANY) / <session> <insecure> [expiry none] ASP.NET_SessionId owcrje55yl45kgmhn43gq145
--2011-08-18 08:16:12-- http://epaper.abc.com/PagePrint/16_08_2011_001.pdf
Resolving epaper.abc.com... seconds 0.00, 999.999.99.99
Caching epaper.abc.com => 999.999.99.99
Connecting to epaper.abc.com|999.999.99.99|:80... seconds 0.00, connected.
Created socket 300.
Releasing 0x00598290 (new refcount 1).
---request begin---
GET /PagePrint/16_08_2011_001.pdf HTTP/1.0
Referer: http://epaper.abc.com/login.aspx
User-Agent: Wget/1.11.4
Accept: */*
Host: epaper.abc.com
Connection: Keep-Alive
Cookie: ASP.NET_SessionId=owcrje55yl45kgmhn43gq145
---request end---
HTTP request sent, awaiting response...
---response begin---
HTTP/1.1 200 OK
Connection: keep-alive
Date: Thu, 18 Aug 2011 02:46:30 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
content-disposition: attachement; filename=Default_logo.gif
Cache-Control: private
Content-Type: image/GIF
Content-Length: 4568
---response end---
200 OK
Registered socket 300 for persistent reuse.
Length: 4568 (4.5K) [image/GIF]
Saving to: '16_08_2011_001.pdf'
100%[======================================================================================================================>] 4,568 7.74K/s in 0.6s
2011-08-18 08:16:14 (7.74 KB/s) - '16_08_2011_001.pdf' saved [4568/4568]
Saving cookies to abc_cookies.txt.
Done saving cookies.
Conteúdo do abc_cookies.txt
epaper.abc.com FALSE / FALSE 0 ASP.NET_SessionId owcrje55yl45kgmhn43gq145
Acho que você precisa usar --keep-session-cookies para preservar cookies de sessão, em vez de apenas --save-cookies (você precisa de ambos).
Basicamente, você
wget --keep-session-cookies --save-cookies ..... url
para acessar e obter seu cookie de sessão.
então
wget --load-cookie ...... url
para baixar o PDF.
Talvez isso ajude. O site que eu estava tentando acessar tinha alguns campos ocultos que eu precisava obter antes que eu pudesse fazer login com sucesso. Assim, o primeiro wget obtém a página de login para encontrar os campos extras, o segundo wget efetua login no site e salva os cookies, o terceiro usa esses cookies para obter a página desejada.
#!/bin/bash
# get the login page to get the hidden field data
wget -a log.txt -O loginpage.html http://foobar/default.aspx
hiddendata='cat loginpage.html | grep value | grep foobarhidden | tr '=' ' ' | awk '{print $9}' | sed s/\"//g'
rm loginpage.html
# login into the page and save the cookies
postData=user=fakeuser'&'pw=password'&'foobarhidden=${hiddendata}
wget -a log.txt -O /dev/null --post-data ${postData} --keep-session-cookies --save-cookies cookies.txt http://foobar/default.aspx
# get the page you're after
wget -a log.txt -O results.html --load-cookies cookies.txt http://foobar/lister.aspx?id=42
rm cookies.txt
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