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varnishcache
varnish-cache
Commits
2766a700
Commit
2766a700
authored
Oct 07, 2011
by
Poul-Henning Kamp
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Think about and document how we encode bans into bytestrings.
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c327e765
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cache_ban.c
bin/varnishd/cache_ban.c
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bin/varnishd/cache_ban.c
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2766a700
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@@ -38,6 +38,26 @@
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@@ -38,6 +38,26 @@
* We make the "&&" mandatory from the start, leaving the syntax space
* We make the "&&" mandatory from the start, leaving the syntax space
* for latter handling of "||" as well.
* for latter handling of "||" as well.
*
*
* Bans are compiled into bytestrings as follows:
* 8 bytes - double: timestamp XXX: Byteorder ?
* 4 bytes - be32: length
* 1 byte - flags: 0x01: BAN_F_REQ
* N tests
* A test have this form:
* 1 byte - arg (see ban_vars.h col 3 "BAN_ARG_XXX")
* (n bytes) - http header name, canonical encoding
* lump - comparison arg
* 1 byte - operation (BAN_OPER_)
* (lump) - compiled regexp
* A lump is:
* 4 bytes - be32: length
* n bytes - content
*
* In a perfect world, we should vector through VRE to get to PCRE,
* but since we rely on PCRE's ability to encode the regexp into a
* byte string, that would be a little bit artificial, so this is
* the exception that confirmes the rule.
*
*/
*/
#include "config.h"
#include "config.h"
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@@ -286,8 +306,6 @@ ban_parse_http(const struct ban *b, const char *a1)
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@@ -286,8 +306,6 @@ ban_parse_http(const struct ban *b, const char *a1)
/*--------------------------------------------------------------------
/*--------------------------------------------------------------------
* Parse and add a ban test specification
* Parse and add a ban test specification
*
* XXX: This should vector through VRE.
*/
*/
static
int
static
int
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