Check US Visa Status

niv.py

import re
import requests
import sys

if len(sys.argv) != 2:
    print 'Usage: python niv.py <Case Number (AAxxxxxxxx)>'
    exit()

url = 'https://ceac.state.gov/CEACStatTracker/Status.aspx?App=NIV'

extract = lambda pattern: ( re.search( pattern, resp.content ) or re.match('()','') ).group(1)

session = requests.session()

resp = session.get( url )
data = { k: extract( 'id="%s" value="([^"]+)' % k ) for k in ['__VIEWSTATE', '__EVENTVALIDATION'] }

data.update({
    '__EVENTTARGET': 'ctl00$ContentPlaceHolder1$btnSubmit',
    'ctl00$ContentPlaceHolder1$txbCase': sys.argv[1],
})
resp = session.post( url, data=data )

for k in ['lblStatus', 'lblSubmitDate', 'lblStatusDate', 'lblResponseDate']:
    value = extract( '%s">([^<]+)' % k )
    if value:
        print '%-13s: %s' % ( k[3:], value )

passport.py

import re
import requests
import sys

if len(sys.argv) != 2:
    print 'Usage: python passport.py <Passport Number>'
    exit()

url = 'http://cgifederal.force.com/passporttracker?country=China&language=zh_CN'
extract = lambda pattern: re.search( pattern, resp.content ).group(1)

session = requests.session()

resp = session.get( url )
data = { k: extract( 'name="%s" value="([^"]+)' % k ) for k in ['com.salesforce.visualforce.ViewState', 'com.salesforce.visualforce.ViewStateVersion', 'com.salesforce.visualforce.ViewStateMAC'] }

data.update({
    'AJAXREQUEST': '_viewRoot',
    'passportTrackerPage:psptTrackerForm': 'passportTrackerPage:psptTrackerForm',
    'passportTrackerPage:psptTrackerForm:trackButton': 'passportTrackerPage:psptTrackerForm:trackButton',
    'passportTrackerPage:psptTrackerForm:j_id34:j_id35:passportNo': sys.argv[1],
})
resp = session.post( url, data=data )
print extract( 'result">([^<]+)' )