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Add option for set cache policy based on cookie name or pattern #1564

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Merged
merged 5 commits into from
Feb 18, 2022
Merged

Add option for set cache policy based on cookie name or pattern #1564

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f68cf86
Add option for set cache policy based on cookie name or pattern
ttaym Feb 10, 2022
dd05e43
fixup! Add option for set cache policy based on cookie name or pattern
ttaym Feb 17, 2022
68fa669
fixup! Add option for set cache policy based on cookie name or pattern
ttaym Feb 18, 2022
b57f10d
fixup! Add option for set cache policy based on cookie name or pattern
ttaym Feb 18, 2022
2a15670
fixup! Add option for set cache policy based on cookie name or pattern
ttaym Feb 18, 2022
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3 changes: 3 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,9 @@ Module.symvers
.settings
.pydevproject

# vscode project settings
.vscode

# Python compiler cache files
*.pyc

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4 changes: 4 additions & 0 deletions fw/cache.c
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Expand Up @@ -356,6 +356,10 @@ tfw_cache_employ_req(TfwHttpReq *req)
/* cache_fulfill - work as usual in cache mode. */
BUG_ON(cmd != TFW_D_CACHE_FULFILL);

/* No cache for request due to http chain '$cache' action */
if (req->cache_ctl.flags & TFW_HTTP_CC_CHAIN_NO_CACHE)
return false;

if (req->cache_ctl.flags & TFW_HTTP_CC_NO_CACHE)
/*
* TODO: RFC 7234 4. "... a cache MUST NOT reuse a stored
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7 changes: 6 additions & 1 deletion fw/http.c
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Expand Up @@ -4010,7 +4010,7 @@ tfw_http_hdr_split(TfwStr *hdr, TfwStr *name_out, TfwStr *val_out, bool inplace)

val_out->len += chunk->len;

/*
/*
* Skip OWS after the header value (RWS) - they must be in
* separate chunks too.
*/
Expand Down Expand Up @@ -5402,6 +5402,11 @@ tfw_http_req_process(TfwConn *conn, TfwStream *stream, const TfwFsmData *data)
*/
req->cache_ctl.timestamp = tfw_current_timestamp();
req->jrxtstamp = jiffies;
/*
* Bypass cache if corresponding binary flag in request set
*/
if (unlikely(test_bit(TFW_HTTP_B_CHAIN_NO_CACHE, req->flags)))
req->cache_ctl.flags |= TFW_HTTP_CC_CHAIN_NO_CACHE;

/*
* Run frang checks first before any processing happen. Can't start
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3 changes: 3 additions & 0 deletions fw/http.h
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Expand Up @@ -133,6 +133,7 @@ enum {
#define TFW_HTTP_CC_MAX_STALE 0x00000010
#define TFW_HTTP_CC_MIN_FRESH 0x00000020
#define TFW_HTTP_CC_OIFCACHED 0x00000040
#define TFW_HTTP_CC_CHAIN_NO_CACHE 0x00000080
/* Response only CC directives. */
#define TFW_HTTP_CC_MUST_REVAL 0x00000100
#define TFW_HTTP_CC_PROXY_REVAL 0x00000200
Expand Down Expand Up @@ -263,6 +264,8 @@ enum {
TFW_HTTP_FLAGS_REQ,
/* Sticky cookie is found and verified. */
TFW_HTTP_B_HAS_STICKY = TFW_HTTP_FLAGS_REQ,
/* Request fitted no cache cookie rule */
TFW_HTTP_B_CHAIN_NO_CACHE,
/* Request is non-idempotent. */
TFW_HTTP_B_NON_IDEMP,
/* Request stated 'Accept: text/html' header */
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