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MINOR: http: add capture.req.ver and capture.res.ver

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These ones report a string as "HTTP/1.0" or "HTTP/1.1" depending on the
version of the request message or the response message, respectively.
The purpose is to be able to emit custom log lines reporting this version
in a persistent way.
This commit is contained in:
Willy Tarreau 2014-04-24 23:41:57 +02:00
parent 8b8995f0f4
commit 3c1b5ec29c
2 changed files with 65 additions and 3 deletions
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10
doc/configuration.txt
View File

@ -10698,12 +10698,22 @@ capture.req.uri : string
and "url", it can be used in both request and response because it's
allocated.
capture.req.ver : string
This extracts the request's HTTP version and returns either "HTTP/1.0" or
"HTTP/1.1". Unlike "req.ver", it can be used in both request, response, and
logs because it relies on a persistent flag.
capture.res.hdr(<idx>) : string
This extracts the content of the header captured by the "capture response
header", idx is the position of the capture keyword in the configuration.
The first entry is an index of 0.
See also: "capture response header"
capture.res.ver : string
This extracts the response's HTTP version and returns either "HTTP/1.0" or
"HTTP/1.1". Unlike "res.ver", it can be used in logs because it relies on a
persistent flag.
req.cook([<name>]) : string
cook([<name>]) : string (deprecated)
This extracts the last occurrence of the cookie name <name> on a "Cookie"

58
src/proto_http.c
View File

@ -10033,6 +10033,54 @@ smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsign
return 1;
}
/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
* as a string (either "HTTP/1.0" or "HTTP/1.1").
*/
static int
smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
const struct arg *args, struct sample *smp, const char *kw)
{
struct http_txn *txn = l7;
if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
return 0;
if (txn->req.flags & HTTP_MSGF_VER_11)
smp->data.str.str = "HTTP/1.1";
else
smp->data.str.str = "HTTP/1.0";
smp->data.str.len = 8;
smp->type = SMP_T_STR;
smp->flags = SMP_F_CONST;
return 1;
}
/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
* as a string (either "HTTP/1.0" or "HTTP/1.1").
*/
static int
smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
const struct arg *args, struct sample *smp, const char *kw)
{
struct http_txn *txn = l7;
if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
return 0;
if (txn->rsp.flags & HTTP_MSGF_VER_11)
smp->data.str.str = "HTTP/1.1";
else
smp->data.str.str = "HTTP/1.0";
smp->data.str.len = 8;
smp->type = SMP_T_STR;
smp->flags = SMP_F_CONST;
return 1;
}
/* Iterate over all cookies present in a message. The context is stored in
* smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
@ -10771,12 +10819,16 @@ static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
{ "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
{ "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
{ "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
{ "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
/* capture are allocated and are permanent in the session */
{ "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
/* retrieve these captures from the HTTP logs */
{ "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
{ "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
{ "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
{ "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
{ "capture.res.ver", smp_fetch_capture_res_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
/* cookie is valid in both directions (eg: for "stick ...") but cook*
* are only here to match the ACL's name, are request-only and are used