From da888aaba8ddae377e5c6e92984c9a38f4482785 Mon Sep 17 00:00:00 2001
From: Erle Carrara <ecarrara@zapen.com.br>
Date: Tue, 17 Jan 2017 15:19:11 -0200
Subject: [PATCH] Add __ncforminfo login form field

---
 download_landsat_scene.py | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/download_landsat_scene.py b/download_landsat_scene.py
index 98ea0b2..57c0cbd 100755
--- a/download_landsat_scene.py
+++ b/download_landsat_scene.py
@@ -41,8 +41,16 @@ def connect_earthexplorer_proxy(proxy_info,usgs):
     else :
         print "Error : CSRF_Token not found"
         sys.exit(-3)
+
+    m = re.search(r'<input .*?name="__ncforminfo".*?value="(.*?)"', data)
+    if m:
+        ncforminfo = m.group(1)
+    else :
+        print "Error : NCFormInfo not found"
+        sys.exit(-3)
+
     # parametres de connection
-    params = urllib.urlencode(dict(username=usgs['account'], password=usgs['passwd'], csrf_token=token))
+    params = urllib.urlencode(dict(username=usgs['account'], password=usgs['passwd'], csrf_token=token, __ncforminfo=ncforminfo))
     # utilisation
 
     request = urllib2.Request("https://ers.cr.usgs.gov", params, headers={})
@@ -71,8 +79,16 @@ def connect_earthexplorer_no_proxy(usgs):
     else :
         print "Error : CSRF_Token not found"
         sys.exit(-3)
-        
-    params = urllib.urlencode(dict(username=usgs['account'],password= usgs['passwd'], csrf_token=token))
+
+    m = re.search(r'<input .*?name="__ncforminfo".*?value="(.*?)"', data)
+    if m:
+        ncforminfo = m.group(1)
+    else :
+        print "Error : NCFormInfo not found"
+        sys.exit(-3)
+
+    params = urllib.urlencode(dict(username=usgs['account'], password=usgs['passwd'], csrf_token=token, __ncforminfo=ncforminfo))
+
     request = urllib2.Request("https://ers.cr.usgs.gov/login", params, headers={})
     f = urllib2.urlopen(request)