-const char jcc_rcs[] = "$Id: jcc.c,v 1.131 2007/04/22 13:24:50 fabiankeil Exp $";
+const char jcc_rcs[] = "$Id: jcc.c,v 1.132 2007/04/25 15:15:17 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/jcc.c,v $
*
* Revisions :
* $Log: jcc.c,v $
+ * Revision 1.132 2007/04/25 15:15:17 fabiankeil
+ * Support crunching based on tags created by server-header taggers.
+ *
* Revision 1.131 2007/04/22 13:24:50 fabiankeil
* Make HTTP snippets static (again). Add a Content-Type for those
* with content so the browser doesn't guess it based on the URL.
"Connection: close\r\n\r\n"
"Bad request. Null byte(s) before end of request.\r\n";
+/* A function to crunch a response */
+typedef struct http_response *(*crunch_func_ptr)(struct client_state *);
+
+/* Crunch function flags */
+#define CF_NO_FLAGS 0
+/* Cruncher applies to forced requests as well */
+#define CF_IGNORE_FORCE 1
+/* Crunched requests are counted for the block statistics */
+#define CF_COUNT_AS_REJECT 2
+
+/* A crunch function and its flags */
+struct cruncher
+{
+ const crunch_func_ptr cruncher;
+ const int flags;
+};
+
+/* Complete list of cruncher functions */
+const static struct cruncher crunchers_all[] = {
+ { direct_response, CF_COUNT_AS_REJECT|CF_IGNORE_FORCE},
+ { block_url, CF_COUNT_AS_REJECT },
+#ifdef FEATURE_TRUST
+ { trust_url, CF_COUNT_AS_REJECT },
+#endif /* def FEATURE_TRUST */
+ { redirect_url, CF_NO_FLAGS },
+ { dispatch_cgi, CF_IGNORE_FORCE},
+ { NULL, 0 }
+};
+
+/* Light version, used after tags are applied */
+const static struct cruncher crunchers_light[] = {
+ { block_url, CF_COUNT_AS_REJECT },
+ { redirect_url, CF_NO_FLAGS },
+ { NULL, 0 }
+};
+
+
#if !defined(_WIN32) && !defined(__OS2__) && !defined(AMIGA)
/*********************************************************************
*
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
+ * 2 : crunchers = list of cruncher functions to run
*
* Returns : TRUE if the request was answered with a crunch response
* FALSE otherwise.
*
*********************************************************************/
-int crunch_response_triggered(struct client_state *csp)
+int crunch_response_triggered(struct client_state *csp, const struct cruncher crunchers[])
{
-/*
- * This next lines are a little ugly, but they simplify the if statements
- * below. Basically if TOGGLE, then we want the if to test if the
- * CSP_FLAG_TOGGLED_ON flag ist set, else we don't. And if FEATURE_FORCE_LOAD,
- * then we want the if to test for CSP_FLAG_FORCED, else we don't.
- */
-#ifdef FEATURE_TOGGLE
-# define IS_TOGGLED_ON_AND (csp->flags & CSP_FLAG_TOGGLED_ON) &&
-#else /* ifndef FEATURE_TOGGLE */
-# define IS_TOGGLED_ON_AND
-#endif /* ndef FEATURE_TOGGLE */
-#ifdef FEATURE_FORCE_LOAD
-# define IS_NOT_FORCED_AND !(csp->flags & CSP_FLAG_FORCED) &&
-#else /* ifndef FEATURE_FORCE_LOAD */
-# define IS_NOT_FORCED_AND
-#endif /* def FEATURE_FORCE_LOAD */
-
-#define IS_ENABLED_AND IS_TOGGLED_ON_AND IS_NOT_FORCED_AND
-
struct http_response *rsp = NULL;
+ const struct cruncher *c;
- if (
- /* We may not forward the request by rfc2616 sect 14.31 */
- (NULL != (rsp = direct_response(csp)))
-
- /* or we are enabled and... */
- || (IS_ENABLED_AND (
-
- /* ..the request was blocked */
- ( NULL != (rsp = block_url(csp)))
-
- /* ..or untrusted */
-#ifdef FEATURE_TRUST
- || ( NULL != (rsp = trust_url(csp)))
-#endif /* def FEATURE_TRUST */
-
- /* ..or a redirect kicked in */
- || ( NULL != (rsp = redirect_url(csp)))
- ))
- /*
- * .. or a CGI call was detected and answered.
- *
- * This check comes last to give the user the power
- * to deny acces to some (or all) of the cgi pages.
- */
- || (NULL != (rsp = dispatch_cgi(csp)))
-
- )
+ for (c = crunchers; c->cruncher != NULL; c++)
{
- /* Deliver, log and free the interception response. */
- send_crunch_response(csp, rsp);
+ /*
+ * Check the cruncher if either Privoxy is toggled
+ * on and the request isn't forced, or if the cruncher
+ * applies to forced requests as well.
+ */
+ if (((csp->flags & CSP_FLAG_TOGGLED_ON) &&
+ !(csp->flags & CSP_FLAG_FORCED)) ||
+ (c->flags & CF_IGNORE_FORCE))
+ {
+ rsp = c->cruncher(csp);
+ if (NULL != rsp)
+ {
+ /* Deliver, log and free the interception response. */
+ send_crunch_response(csp, rsp);
#ifdef FEATURE_STATISTICS
- csp->flags |= CSP_FLAG_REJECTED;
+ if (c->flags & CF_COUNT_AS_REJECT)
+ {
+ csp->flags |= CSP_FLAG_REJECTED;
+ }
#endif /* def FEATURE_STATISTICS */
- return TRUE;
+ return TRUE;
+ }
+ }
}
return FALSE;
/*
* We have a request. Check if one of the crunchers wants it.
*/
- if (crunch_response_triggered(csp))
+ if (crunch_response_triggered(csp, crunchers_all))
{
/*
* Yes. The client got the crunch response
* Shouldn't happen because this was the second sed run
* and tags are only created for the first one.
*/
- assert(!crunch_response_triggered(csp));
+ assert(!crunch_response_triggered(csp, crunchers_all));
if (write_socket(csp->cfd, hdr, strlen(hdr))
|| write_socket(csp->cfd, p != NULL ? p : csp->iob->cur, csp->content_length))
return;
}
- if (crunch_response_triggered(csp))
+ if (crunch_response_triggered(csp, crunchers_light))
{
/*
* One of the tags created by a server-header
log_error(LOG_LEVEL_FATAL, "Out of memory parsing server header");
}
- if (crunch_response_triggered(csp))
+ if (crunch_response_triggered(csp, crunchers_light))
{
/*
* One of the tags created by a server-header
projects / privoxy.git / blobdiff