BUG/MINOR: http-fetch: Extract cookie value even when no cookie name
HTTP sample fetches dealing with the cookies (req/res.cook,
req/res.cook_val and req/res.cook_cnt) must be prepared to be called
without cookie name. For the first two, the first cookie value is
returned, regardless its name. For the last one, all cookies are counted.
To do so, http_extract_cookie_value() may now be called with no cookie
name (cookie_name_l set to 0). In this case, the matching on the cookie
name is ignored and the first value found is returned.
Note this patch also fixes matching on cookie values in ACLs.
This should be backported in all stable versions.
diff --git a/src/http_fetch.c b/src/http_fetch.c
index 170d86c..8719a54 100644
--- a/src/http_fetch.c
+++ b/src/http_fetch.c
@@ -1566,11 +1566,11 @@
* smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
* end-of-header-value, and smp->ctx.a[2] for the hdr_ctx. Depending on
* the direction, multiple cookies may be parsed on the same line or not.
- * The cookie name is in args and the name length in args->data.str.len.
- * Accepts exactly 1 argument of type string. If the input options indicate
- * that no iterating is desired, then only last value is fetched if any.
- * The returned sample is of type CSTR. Can be used to parse cookies in other
- * files.
+ * If provided, the searched cookie name is in args, in args->data.str. If
+ * the input options indicate that no iterating is desired, then only last
+ * value is fetched if any. If no cookie name is provided, the first cookie
+ * value found is fetched. The returned sample is of type CSTR. Can be used
+ * to parse cookies in other files.
*/
static int smp_fetch_cookie(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
@@ -1580,7 +1580,6 @@
struct htx *htx = smp_prefetch_htx(smp, chn, check, 1);
struct http_hdr_ctx *ctx = smp->ctx.a[2];
struct ist hdr;
- int occ = 0;
int found = 0;
if (!args || args->type != ARGT_STR)
@@ -1598,13 +1597,9 @@
hdr = (!(check || (chn && chn->flags & CF_ISRESP)) ? ist("Cookie") : ist("Set-Cookie"));
- if (!occ && !(smp->opt & SMP_OPT_ITERATE))
- /* no explicit occurrence and single fetch => last cookie by default */
- occ = -1;
-
- /* OK so basically here, either we want only one value and it's the
- * last one, or we want to iterate over all of them and we fetch the
- * next one.
+ /* OK so basically here, either we want only one value or we want to
+ * iterate over all of them and we fetch the next one. In this last case
+ * SMP_OPT_ITERATE option is set.
*/
if (!(smp->flags & SMP_F_NOT_LAST)) {
@@ -1638,11 +1633,15 @@
&smp->data.u.str.data);
if (smp->ctx.a[0]) {
found = 1;
- if (occ >= 0) {
- /* one value was returned into smp->data.u.str.{str,len} */
+ if (smp->opt & SMP_OPT_ITERATE) {
+ /* iterate on cookie value */
smp->flags |= SMP_F_NOT_LAST;
return 1;
}
+ if (args->data.str.data == 0) {
+ /* No cookie name, first occurrence returned */
+ break;
+ }
}
/* if we're looking for last occurrence, let's loop */
}