PHP Curl And Cookies

Question

I have some problem with PHP Curl and cookies authentication   I have a file Connector php which authenticates users on another server and returns the cookie of the current user   The Problem is that I want to authenticate thousands of users with curl but it authenticates and saves COOKIES only for one user at a time   The code for connector php is this        lt  php     if  count   REQUEST             die  No Access                   Core Url For Services     define   ServiceCore    http   example com core             Which Internal Service Should Be Called      path     GET  service            Service To Be Queried      url   ServiceCore  path         Open the Curl session      session   curl init  url           If it s a GET  put the GET data in the body     if    GET  service                Iterate Over GET Vars          postvars               foreach   GET as  key  gt  val                if  key   service                      postvars    key  val amp                                    curl setopt   session  CURLOPT POST  true           curl setopt   session  CURLOPT POSTFIELDS   postvars                 Create And Save Cookies      tmpfname   dirname   FILE      cookie txt       curl setopt  session  CURLOPT COOKIEJAR   tmpfname       curl setopt  session  CURLOPT COOKIEFILE   tmpfname        curl setopt  session  CURLOPT HEADER  false       curl setopt  session  CURLOPT RETURNTRANSFER  true       curl setopt  session  CURLOPT FOLLOWLOCATION  true           EXECUTE      json   curl exec  session           echo  json      curl close  session     gt    Here is the process of authentication    User enters username and password  Connector php service logon amp user name user32 amp user pass 123 Connector php service logosessionInfo returns info about the user based on the cookies saved earlier with logon service    The problem is that this code saves the cookie in one file for each user and can t handle multiple user authentications

User · Accepted Answer

Solutions which are described above  even with unique CookieFile names  can cause a lot of problems on scale   We had to serve a lot of authentications with this solution and our server went down because of high file read write actions   The solution for this was to use Apache Reverse Proxy and omit CURL requests at all   Details how to use Proxy on Apache can be found here  https   httpd apache org docs 2 4 howto reverse proxy html

User · Answer

You can specify the cookie file with a curl opt  You could use a unique file for each user   curl setopt   curl handle  CURLOPT COOKIESESSION  true    curl setopt   curl handle  CURLOPT COOKIEJAR  uniquefilename    curl setopt   curl handle  CURLOPT COOKIEFILE  uniquefilename      The best way to handle it would be to stick your request logic into a curl function and just pass the unique file name in as a parameter       function fetch   url   z null                  ch    curl init                  useragent   isset  z  useragent       z  useragent      Mozilla 5 0  Windows NT 6 1  WOW64  rv 10 0 2  Gecko 20100101 Firefox 10 0 2                curl setopt   ch  CURLOPT URL   url                curl setopt   ch  CURLOPT RETURNTRANSFER  true                curl setopt   ch  CURLOPT AUTOREFERER  true                curl setopt   ch  CURLOPT FOLLOWLOCATION  true                curl setopt   ch  CURLOPT POST  isset  z  post                    if  isset  z  post              curl setopt   ch  CURLOPT POSTFIELDS   z  post                  if  isset  z  refer             curl setopt   ch  CURLOPT REFERER   z  refer                   curl setopt   ch  CURLOPT USERAGENT   useragent                curl setopt   ch  CURLOPT CONNECTTIMEOUT    isset  z  timeout       z  timeout     5                  curl setopt   ch  CURLOPT COOKIEJAR    z  cookiefile                  curl setopt   ch  CURLOPT COOKIEFILE   z  cookiefile                    result   curl exec   ch                curl close   ch                return  result          I use this for quick grabs  It takes the url and an array of options

User · Answer

In working with a similar problem I created the following function after combining a lot of resources I ran into on the web  and adding my own cookie handling  Hopefully this is useful to someone else         function get web page   url   cookiesIn                  options   array              CURLOPT RETURNTRANSFER   gt  true         return web page             CURLOPT HEADER           gt  true        return headers in addition to content             CURLOPT FOLLOWLOCATION   gt  true         follow redirects             CURLOPT ENCODING         gt               handle all encodings             CURLOPT AUTOREFERER      gt  true         set referer on redirect             CURLOPT CONNECTTIMEOUT   gt  120          timeout on connect             CURLOPT TIMEOUT          gt  120          timeout on response             CURLOPT MAXREDIRS        gt  10           stop after 10 redirects             CURLINFO HEADER OUT      gt  true              CURLOPT SSL VERIFYPEER   gt  true         Validate SSL Certificates             CURLOPT HTTP VERSION     gt  CURL HTTP VERSION 1 1              CURLOPT COOKIE           gt   cookiesIn                      ch        curl init   url            curl setopt array   ch   options             rough content   curl exec   ch             err       curl errno   ch             errmsg    curl error   ch             header    curl getinfo   ch            curl close   ch              header content   substr  rough content  0   header  header size              body content   trim str replace  header content       rough content             pattern     Set-Cookie   s    lt cookie gt              m            preg match all  pattern   header content   matches             cookiesOut   implode        matches  cookie               header  errno        err           header  errmsg       errmsg           header  headers       header content           header  content      body content           header  cookies      cookiesOut      return  header

User · Answer

First create temporary cookie using tempnam   function    ckfile   tempnam    tmp    CURLCOOKIE      Then execute curl init witch saves the cookie as a temporary file    ch   curl init   http   uri com     curl setopt   ch  CURLOPT COOKIEJAR   ckfile   curl setopt   ch  CURLOPT RETURNTRANSFER  true    output   curl exec   ch     Or visit a page using the cookie stored in the temporary file    ch   curl init   http   somedomain com cookiepage php    curl setopt   ch  CURLOPT COOKIEFILE   ckfile   curl setopt   ch  CURLOPT RETURNTRANSFER  true    output   curl exec   ch     This will initialize the cookie for the page   curl setopt   ch  CURLOPT COOKIEFILE   ckfile

User · Answer

You can define different cookies for every user with CURLOPT COOKIEFILE and CURLOPT COOKIEJAR  Make different file for every user so each one would have it s own cookie-based session on remote server

User · Answer

Here you can find some useful info about cURL  amp  cookies http   docstore mik ua orelly webprog pcook ch11 04 htm     You can also use this well done method https   github com alixaxel phunction blob master phunction Net php L89 like a function   function CURL  url   data   null   method    GET    cookie   null   options   null   retries   3         result   false       if   extension loaded  curl       true   amp  amp   is resource  curl   curl init        true                 curl setopt  curl  CURLOPT URL   url           curl setopt  curl  CURLOPT FAILONERROR  true           curl setopt  curl  CURLOPT AUTOREFERER  true           curl setopt  curl  CURLOPT RETURNTRANSFER  true           curl setopt  curl  CURLOPT SSL VERIFYHOST  false           curl setopt  curl  CURLOPT SSL VERIFYPEER  false            if  preg match       DELETE GET HEAD OPTIONS POST PUT   i    method   gt  0                        if  preg match       HEAD OPTIONS   i    method   gt  0                                curl setopt array  curl  array CURLOPT HEADER   gt  true  CURLOPT NOBODY   gt  true                               else if  preg match       POST PUT   i    method   gt  0                                if  is array  data      true                                        foreach  preg grep          data  as  key   gt   value                                                 data  key    sprintf    s   rtrim str replace            realpath ltrim  value                  is dir ltrim  value                                                                 if  count  data     count  data  COUNT RECURSIVE                                                  data   http build query  data        amp                                                              curl setopt  curl  CURLOPT POSTFIELDS   data                              curl setopt  curl  CURLOPT CUSTOMREQUEST  strtoupper  method                 if  isset  cookie      true                                curl setopt array  curl  array fill keys array CURLOPT COOKIEJAR  CURLOPT COOKIEFILE   strval  cookie                                if   intval ini get  safe mode       0   amp  amp   ini set  open basedir   null      false                                 curl setopt array  curl  array CURLOPT MAXREDIRS   gt  5  CURLOPT FOLLOWLOCATION   gt  true                               if  is array  options      true                                curl setopt array  curl   options                              for   i   1   i  lt    retries     i                                 result   curl exec  curl                    if    i     retries       result     false                                         break                                     usleep pow 2   i - 2    1000000                                    curl close  curl              return  result      And pass this as  cookie parameter    cookie jar   tempnam   tmp   cookie

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