[vlc-devel] [PATCH] access/http: Inherit cookies from a parent HTTP access

Antti Ajanki antti.ajanki at iki.fi
Sun Aug 3 10:13:16 CEST 2014


This allows stream filters such as HDS and HLS to share cookies between
HTTP requests. Enables playing streams that set a cookie when the
manifest is read and expect it to be sent back on fragment requests.
---
 modules/access/http.c        |   58 +++++++++++++++++++++++++-----------------
 modules/access/httpcookies.c |   46 +++++++++++++++++++++++++--------
 modules/access/httpcookies.h |    2 +-
 3 files changed, 70 insertions(+), 36 deletions(-)

diff --git a/modules/access/http.c b/modules/access/http.c
index 8b0b305..1db9034 100644
--- a/modules/access/http.c
+++ b/modules/access/http.c
@@ -185,13 +185,12 @@ struct access_sys_t
     bool b_pace_control;
     bool b_persist;
     bool b_has_size;
-
-    http_cookie_jar_t * cookies;
+    bool b_free_cookies;
 };
 
 /* */
-static int OpenWithCookies( vlc_object_t *p_this, const char *psz_access,
-                            unsigned i_redirect, http_cookie_jar_t *cookies );
+static int OpenWithRedirects( vlc_object_t *p_this, const char *psz_access,
+                              unsigned i_redirect );
 
 /* */
 static ssize_t Read( access_t *, uint8_t *, size_t );
@@ -216,7 +215,7 @@ static int AuthCheckReply( access_t *p_access, const char *psz_header,
 static int Open( vlc_object_t *p_this )
 {
     access_t *p_access = (access_t*)p_this;
-    return OpenWithCookies( p_this, p_access->psz_access, 5, NULL );
+    return OpenWithRedirects( p_this, p_access->psz_access, 5 );
 }
 
 /**
@@ -225,11 +224,10 @@ static int Open( vlc_object_t *p_this )
  * @psz_access: the acces to use (http, https, ...) (this value must be used
  *              instead of p_access->psz_access)
  * @i_redirect: number of redirections remaining
- * @cookies: the available cookies
  * @return vlc error codes
  */
-static int OpenWithCookies( vlc_object_t *p_this, const char *psz_access,
-                            unsigned i_redirect, http_cookie_jar_t *cookies )
+static int OpenWithRedirects( vlc_object_t *p_this, const char *psz_access,
+                              unsigned i_redirect )
 {
     access_t     *p_access = (access_t*)p_this;
     access_sys_t *p_sys;
@@ -274,14 +272,22 @@ static int OpenWithCookies( vlc_object_t *p_this, const char *psz_access,
     p_sys->b_persist = false;
     p_sys->b_has_size = false;
     p_sys->size = 0;
+    p_sys->b_free_cookies = false;
     p_access->info.i_pos  = 0;
     p_access->info.b_eof  = false;
 
     /* Only forward an store cookies if the corresponding option is activated */
-    if( var_CreateGetBool( p_access, "http-forward-cookies" ) )
-        p_sys->cookies = (cookies != NULL) ? cookies : http_cookies_new();
-    else
-        p_sys->cookies = NULL;
+    if( var_CreateGetBool( p_access, "http-forward-cookies" ) &&
+        ( var_CreateGetAddress( p_access, "http-cookies" ) == NULL ) )
+    {
+        http_cookie_jar_t *cookies = http_cookies_new();
+        if ( likely( cookies ) ) {
+            var_SetAddress( p_access, "http-cookies", cookies );
+            p_sys->b_free_cookies = true;
+        } else {
+            var_Destroy( p_access, "http-cookies" );
+        }
+    }
 
     http_auth_Init( &p_sys->auth );
     http_auth_Init( &p_sys->proxy_auth );
@@ -510,15 +516,13 @@ connect:
 
         Disconnect( p_access );
         vlc_tls_Delete( p_sys->p_creds );
-        cookies = p_sys->cookies;
 #ifdef HAVE_ZLIB_H
         inflateEnd( &p_sys->inflate.stream );
 #endif
         free( p_sys );
 
         /* Do new Open() run with new data */
-        return OpenWithCookies( p_this, psz_protocol, i_redirect - 1,
-                                cookies );
+        return OpenWithRedirects( p_this, psz_protocol, i_redirect - 1 );
     }
 
     if( p_sys->b_mms )
@@ -597,7 +601,9 @@ error:
     Disconnect( p_access );
     vlc_tls_Delete( p_sys->p_creds );
 
-    http_cookies_destroy( p_sys->cookies );
+    if ( p_sys->b_free_cookies )
+        http_cookies_destroy( var_GetAddress( p_access, "http-cookies" ) );
+    var_Destroy( p_access, "http-cookies" );
 
 #ifdef HAVE_ZLIB_H
     inflateEnd( &p_sys->inflate.stream );
@@ -633,7 +639,9 @@ static void Close( vlc_object_t *p_this )
     Disconnect( p_access );
     vlc_tls_Delete( p_sys->p_creds );
 
-    http_cookies_destroy( p_sys->cookies );
+    if ( p_sys->b_free_cookies )
+        http_cookies_destroy( var_GetAddress( p_access, "http-cookies" ) );
+    var_Destroy( p_access, "http-cookies" );
 
 #ifdef HAVE_ZLIB_H
     inflateEnd( &p_sys->inflate.stream );
@@ -1126,9 +1134,10 @@ static int Connect( access_t *p_access, uint64_t i_tell )
 
 static int Request( access_t *p_access, uint64_t i_tell )
 {
-    access_sys_t   *p_sys = p_access->p_sys;
-    char           *psz ;
-    v_socket_t     *pvs = p_sys->p_vs;
+    access_sys_t      *p_sys = p_access->p_sys;
+    char              *psz ;
+    v_socket_t        *pvs = p_sys->p_vs;
+    http_cookie_jar_t *cookies;
     p_sys->b_persist = false;
 
     p_sys->i_remaining = 0;
@@ -1169,9 +1178,10 @@ static int Request( access_t *p_access, uint64_t i_tell )
     }
 
     /* Cookies */
-    if( p_sys->cookies )
+    cookies = var_GetAddress( p_access, "http-cookies" );
+    if( cookies )
     {
-        char * psz_cookiestring = http_cookies_for_url( p_sys->cookies, &p_sys->url );
+        char * psz_cookiestring = http_cookies_for_url( cookies, &p_sys->url );
         if ( psz_cookiestring )
         {
             msg_Dbg( p_access, "Sending Cookie %s", psz_cookiestring );
@@ -1472,9 +1482,9 @@ static int Request( access_t *p_access, uint64_t i_tell )
         }
         else if( !strcasecmp( psz, "Set-Cookie" ) )
         {
-            if( p_sys->cookies )
+            if( cookies )
             {
-                if ( http_cookies_append( p_sys->cookies, p, &p_sys->url ) )
+                if ( http_cookies_append( cookies, p, &p_sys->url ) )
                     msg_Dbg( p_access, "Accepting Cookie: %s", p );
                 else
                     msg_Dbg( p_access, "Rejected Cookie: %s", p );
diff --git a/modules/access/httpcookies.c b/modules/access/httpcookies.c
index 2dc0a6b..2bdd774 100644
--- a/modules/access/httpcookies.c
+++ b/modules/access/httpcookies.c
@@ -45,6 +45,12 @@ typedef struct http_cookie_t
     bool b_secure;
 } http_cookie_t;
 
+struct http_cookie_jar_t
+{
+    vlc_array_t cookies;
+    vlc_mutex_t lock;
+};
+
 static http_cookie_t * cookie_parse( const char * cookie_header, const vlc_url_t * url );
 static void cookie_destroy( http_cookie_t * p_cookie );
 static char * cookie_get_content( const char * cookie );
@@ -60,7 +66,14 @@ static char * cookie_default_path( const char *request_path );
 
 http_cookie_jar_t * http_cookies_new()
 {
-    return vlc_array_new();
+    http_cookie_jar_t * jar = malloc( sizeof( http_cookie_jar_t ) );
+    if ( !jar )
+        return NULL;
+
+    vlc_array_init( &jar->cookies );
+    vlc_mutex_init( &jar->lock );
+
+    return jar;
 }
 
 void http_cookies_destroy( http_cookie_jar_t * p_jar )
@@ -69,9 +82,11 @@ void http_cookies_destroy( http_cookie_jar_t * p_jar )
         return;
 
     int i;
-    for( i = 0; i < vlc_array_count( p_jar ); i++ )
-        cookie_destroy( vlc_array_item_at_index( p_jar, i ) );
-    vlc_array_destroy( p_jar );
+    for( i = 0; i < vlc_array_count( &p_jar->cookies ); i++ )
+        cookie_destroy( vlc_array_item_at_index( &p_jar->cookies, i ) );
+
+    vlc_array_destroy( &p_jar->cookies );
+    vlc_mutex_destroy( &p_jar->lock );
 }
 
 bool http_cookies_append( http_cookie_jar_t * p_jar, const char * psz_cookie_header, const vlc_url_t *p_url )
@@ -85,9 +100,11 @@ bool http_cookies_append( http_cookie_jar_t * p_jar, const char * psz_cookie_hea
         return false;
     }
 
-    for( i = 0; i < vlc_array_count( p_jar ); i++ )
+    vlc_mutex_lock( &p_jar->lock );
+
+    for( i = 0; i < vlc_array_count( &p_jar->cookies ); i++ )
     {
-        http_cookie_t *iter = vlc_array_item_at_index( p_jar, i );
+        http_cookie_t *iter = vlc_array_item_at_index( &p_jar->cookies, i );
 
         assert( iter->psz_name );
         assert( iter->psz_domain );
@@ -100,24 +117,28 @@ bool http_cookies_append( http_cookie_jar_t * p_jar, const char * psz_cookie_hea
         if( domains_match && paths_match && names_match )
         {
             /* Remove previous value for this cookie */
-            vlc_array_remove( p_jar, i );
+            vlc_array_remove( &p_jar->cookies, i );
             cookie_destroy(iter);
             break;
         }
     }
-    vlc_array_append( p_jar, cookie );
+    vlc_array_append( &p_jar->cookies, cookie );
+
+    vlc_mutex_unlock( &p_jar->lock );
 
     return true;
 }
 
-
 char *http_cookies_for_url( http_cookie_jar_t * p_jar, const vlc_url_t * p_url )
 {
     int i;
     char *psz_cookiebuf = NULL;
-    for( i = 0; i < vlc_array_count( p_jar ); i++ )
+
+    vlc_mutex_lock( &p_jar->lock );
+
+    for( i = 0; i < vlc_array_count( &p_jar->cookies ); i++ )
     {
-        const http_cookie_t * cookie = vlc_array_item_at_index( p_jar, i );
+        const http_cookie_t * cookie = vlc_array_item_at_index( &p_jar->cookies, i );
         if ( cookie_should_be_sent( cookie, p_url ) )
         {
             char *psz_updated_buf = NULL;
@@ -129,6 +150,7 @@ char *http_cookies_for_url( http_cookie_jar_t * p_jar, const vlc_url_t * p_url )
             {
                 // TODO: report error
                 free( psz_cookiebuf );
+                vlc_mutex_unlock( &p_jar->lock );
                 return NULL;
             }
             free( psz_cookiebuf );
@@ -136,6 +158,8 @@ char *http_cookies_for_url( http_cookie_jar_t * p_jar, const vlc_url_t * p_url )
         }
     }
 
+    vlc_mutex_unlock( &p_jar->lock );
+
     return psz_cookiebuf;
 }
 
diff --git a/modules/access/httpcookies.h b/modules/access/httpcookies.h
index bf73191..21311d6 100644
--- a/modules/access/httpcookies.h
+++ b/modules/access/httpcookies.h
@@ -31,7 +31,7 @@ extern "C" {
 #include <vlc_url.h>
 #include <vlc_arrays.h>
 
-typedef struct vlc_array_t http_cookie_jar_t;
+typedef struct http_cookie_jar_t http_cookie_jar_t;
 
 http_cookie_jar_t * http_cookies_new( void );
 void http_cookies_destroy( http_cookie_jar_t * p_jar );
-- 
1.7.10.4




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