X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=filters.c;h=2aa658e02e58878fc9fb26d3a35eddebd2013c73;hp=d425e3c7f831464dad39cff2c0cfa5d81b54ec71;hb=ba9031e38d5d227f37afc96c73572e0d4b26efa6;hpb=938aef4ce9e9f70d825cc9353f92037d90b8bb5c

diff --git a/filters.c b/filters.c
index d425e3c7..2aa658e0 100644
--- a/filters.c
+++ b/filters.c
@@ -1,11 +1,11 @@
-const char filters_rcs[] = "$Id: filters.c,v 1.196 2015/12/27 12:53:39 fabiankeil Exp $";
+const char filters_rcs[] = "$Id: filters.c,v 1.206 2017/06/04 14:43:10 fabiankeil Exp $";
 /*********************************************************************
  *
  * File        :  $Source: /cvsroot/ijbswa/current/filters.c,v $
  *
  * Purpose     :  Declares functions to parse/crunch headers and pages.
  *
- * Copyright   :  Written by and Copyright (C) 2001-2014 the
+ * Copyright   :  Written by and Copyright (C) 2001-2016 the
  *                Privoxy team. http://www.privoxy.org/
  *
  *                Based on the Internet Junkbuster originally written
@@ -70,6 +70,9 @@ const char filters_rcs[] = "$Id: filters.c,v 1.196 2015/12/27 12:53:39 fabiankei
 #include "deanimate.h"
 #include "urlmatch.h"
 #include "loaders.h"
+#ifdef FEATURE_CLIENT_TAGS
+#include "client-tags.h"
+#endif
 
 #ifdef _WIN32
 #include "win32.h"
@@ -79,8 +82,13 @@ const char filters_h_rcs[] = FILTERS_H_VERSION;
 
 typedef char *(*filter_function_ptr)();
 static filter_function_ptr get_filter_function(const struct client_state *csp);
-static jb_err remove_chunked_transfer_coding(char *buffer, size_t *size);
 static jb_err prepare_for_filtering(struct client_state *csp);
+static void apply_url_actions(struct current_action_spec *action,
+                              struct http_request *http,
+#ifdef FEATURE_CLIENT_TAGS
+                              const struct list *client_tags,
+#endif
+                              struct url_actions *b);
 
 #ifdef FEATURE_ACL
 #ifdef HAVE_RFC2553
@@ -97,17 +105,15 @@ static jb_err prepare_for_filtering(struct client_state *csp);
  *          3  :  len  = length of IP address in octets
  *          4  :  port = port number in network order;
  *
- * Returns     :  0 = no errror; -1 otherwise.
+ * Returns     :  void
  *
  *********************************************************************/
-static int sockaddr_storage_to_ip(const struct sockaddr_storage *addr,
-                                  uint8_t **ip, unsigned int *len,
-                                  in_port_t **port)
+static void sockaddr_storage_to_ip(const struct sockaddr_storage *addr,
+                                   uint8_t **ip, unsigned int *len,
+                                   in_port_t **port)
 {
-   if (NULL == addr)
-   {
-      return(-1);
-   }
+   assert(NULL != addr);
+   assert(addr->ss_family == AF_INET || addr->ss_family == AF_INET6);
 
    switch (addr->ss_family)
    {
@@ -142,12 +148,7 @@ static int sockaddr_storage_to_ip(const struct sockaddr_storage *addr,
          }
          break;
 
-      default:
-         /* Unsupported address family */
-         return(-1);
    }
-
-   return(0);
 }
 
 
@@ -447,10 +448,7 @@ int acl_addr(const char *aspec, struct access_control_addr *aca)
    }
 
    aca->mask.ss_family = aca->addr.ss_family;
-   if (sockaddr_storage_to_ip(&aca->mask, &mask_data, &addr_len, &mask_port))
-   {
-      return(-1);
-   }
+   sockaddr_storage_to_ip(&aca->mask, &mask_data, &addr_len, &mask_port);
 
    if (p)
    {
@@ -926,6 +924,7 @@ pcrs_job *compile_dynamic_pcrs_job_list(const struct client_state *csp, const st
       {"path",   csp->http->path,  1},
       {"host",   csp->http->host,  1},
       {"origin", csp->ip_addr_str, 1},
+      {"listen-address", csp->listen_addr_str, 1},
       {NULL,     NULL,             1}
    };
 
@@ -1318,42 +1317,18 @@ struct http_response *redirect_url(struct client_state *csp)
  *
  * Function    :  is_imageurl
  *
- * Description :  Given a URL, decide whether it is an image or not,
- *                using either the info from a previous +image action
- *                or, #ifdef FEATURE_IMAGE_DETECT_MSIE, and the browser
- *                is MSIE and not on a Mac, tell from the browser's accept
- *                header.
+ * Description :  Given a URL, decide whether it should be treated
+ *                as image URL or not.
  *
  * Parameters  :
  *          1  :  csp = Current client state (buffers, headers, etc...)
  *
- * Returns     :  True (nonzero) if URL is an image, false (0)
+ * Returns     :  True (nonzero) if URL is an image URL, false (0)
  *                otherwise
  *
  *********************************************************************/
 int is_imageurl(const struct client_state *csp)
 {
-#ifdef FEATURE_IMAGE_DETECT_MSIE
-   char *tmp;
-
-   tmp = get_header_value(csp->headers, "User-Agent:");
-   if (tmp && strstr(tmp, "MSIE") && !strstr(tmp, "Mac_"))
-   {
-      tmp = get_header_value(csp->headers, "Accept:");
-      if (tmp && strstr(tmp, "image/gif"))
-      {
-         /* Client will accept HTML.  If this seems counterintuitive,
-          * blame Microsoft.
-          */
-         return(0);
-      }
-      else
-      {
-         return(1);
-      }
-   }
-#endif /* def FEATURE_IMAGE_DETECT_MSIE */
-
    return ((csp->action->flags & ACTION_IMAGE) != 0);
 
 }
@@ -1762,6 +1737,7 @@ static void set_privoxy_variables(const struct client_state *csp)
       { "PRIVOXY_PATH",   csp->http->path  },
       { "PRIVOXY_HOST",   csp->http->host  },
       { "PRIVOXY_ORIGIN", csp->ip_addr_str },
+      { "PRIVOXY_LISTEN_ADDRESS", csp->listen_addr_str },
    };
 
    for (i = 0; i < SZ(env); i++)
@@ -1946,7 +1922,11 @@ static char *execute_external_filter(const struct client_state *csp,
  *                or NULL in case something went wrong.
  *
  *********************************************************************/
+#ifdef FUZZ
+char *gif_deanimate_response(struct client_state *csp)
+#else
 static char *gif_deanimate_response(struct client_state *csp)
+#endif
 {
    struct binbuffer *in, *out;
    char *p;
@@ -1954,12 +1934,8 @@ static char *gif_deanimate_response(struct client_state *csp)
 
    size = (size_t)(csp->iob->eod - csp->iob->cur);
 
-   if (  (NULL == (in =  (struct binbuffer *)zalloc(sizeof *in )))
-      || (NULL == (out = (struct binbuffer *)zalloc(sizeof *out))) )
-   {
-      log_error(LOG_LEVEL_DEANIMATE, "failed! (no mem)");
-      return NULL;
-   }
+   in =  zalloc_or_die(sizeof(*in));
+   out = zalloc_or_die(sizeof(*out));
 
    in->buffer = csp->iob->cur;
    in->size = size;
@@ -2048,13 +2024,23 @@ static filter_function_ptr get_filter_function(const struct client_state *csp)
  *                JB_ERR_PARSE otherwise
  *
  *********************************************************************/
+#ifdef FUZZ
+extern jb_err remove_chunked_transfer_coding(char *buffer, size_t *size)
+#else
 static jb_err remove_chunked_transfer_coding(char *buffer, size_t *size)
+#endif
 {
    size_t newsize = 0;
    unsigned int chunksize = 0;
    char *from_p, *to_p;
    const char *end_of_buffer = buffer + *size;
 
+   if (*size == 0)
+   {
+      log_error(LOG_LEVEL_FATAL, "Invalid chunked input. Buffer is empty.");
+      return JB_ERR_PARSE;
+   }
+
    assert(buffer);
    from_p = to_p = buffer;
 
@@ -2326,13 +2312,16 @@ void get_url_actions(struct client_state *csp, struct http_request *http)
          return;
       }
 
+#ifdef FEATURE_CLIENT_TAGS
+      apply_url_actions(csp->action, http, csp->client_tags, b);
+#else
       apply_url_actions(csp->action, http, b);
+#endif
    }
 
    return;
 }
 
-
 /*********************************************************************
  *
  * Function    :  apply_url_actions
@@ -2342,14 +2331,18 @@ void get_url_actions(struct client_state *csp, struct http_request *http)
  * Parameters  :
  *          1  :  action = Destination.
  *          2  :  http = Current URL
- *          3  :  b = list of URL actions to apply
+ *          3  :  client_tags = list of client tags
+ *          4  :  b = list of URL actions to apply
  *
  * Returns     :  N/A
  *
  *********************************************************************/
-void apply_url_actions(struct current_action_spec *action,
-                       struct http_request *http,
-                       struct url_actions *b)
+static void apply_url_actions(struct current_action_spec *action,
+                              struct http_request *http,
+#ifdef FEATURE_CLIENT_TAGS
+                              const struct list *client_tags,
+#endif
+                              struct url_actions *b)
 {
    if (b == NULL)
    {
@@ -2363,6 +2356,12 @@ void apply_url_actions(struct current_action_spec *action,
       {
          merge_current_action(action, b->action);
       }
+#ifdef FEATURE_CLIENT_TAGS
+      if (client_tag_match(b->url, client_tags))
+      {
+         merge_current_action(action, b->action);
+      }
+#endif
    }
 }
 
@@ -2424,14 +2423,7 @@ static const struct forward_spec *get_forward_override_settings(struct client_st
     * the lifetime of this request. Save its location
     * in csp as well, so sweep() can free it later on.
     */
-   fwd = csp->fwd = zalloc(sizeof(*fwd));
-   if (NULL == fwd)
-   {
-      log_error(LOG_LEVEL_FATAL,
-         "can't allocate memory for forward-override{%s}", forward_override_line);
-      /* Never get here - LOG_LEVEL_FATAL causes program exit */
-      return NULL;
-   }
+   fwd = csp->fwd = zalloc_or_die(sizeof(*fwd));
 
    vec_count = ssplit(forward_settings, " \t", vec, SZ(vec));
    if ((vec_count == 2) && !strcasecmp(vec[0], "forward"))
@@ -2441,6 +2433,14 @@ static const struct forward_spec *get_forward_override_settings(struct client_st
       /* Parse the parent HTTP proxy host:port */
       http_parent = vec[1];
 
+   }
+   else if ((vec_count == 2) && !strcasecmp(vec[0], "forward-webserver"))
+   {
+      fwd->type = FORWARD_WEBSERVER;
+
+      /* Parse the parent HTTP server host:port */
+      http_parent = vec[1];
+
    }
    else if (vec_count == 3)
    {