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-rw-r--r--src/plugins/http_static/http_cache.c22
-rw-r--r--src/plugins/http_static/http_cache.h7
-rw-r--r--src/plugins/http_static/static_server.c12
3 files changed, 30 insertions, 11 deletions
diff --git a/src/plugins/http_static/http_cache.c b/src/plugins/http_static/http_cache.c
index 7a069dace00..2e63e335d47 100644
--- a/src/plugins/http_static/http_cache.c
+++ b/src/plugins/http_static/http_cache.c
@@ -17,6 +17,8 @@
#include <vppinfra/bihash_template.c>
#include <vppinfra/unix.h>
#include <vlib/vlib.h>
+#include <sys/stat.h>
+#include <vppinfra/time_range.h>
static void
hss_cache_lock (hss_cache_t *hc)
@@ -153,7 +155,7 @@ lru_update (hss_cache_t *hc, hss_cache_entry_t *ep, f64 now)
static void
hss_cache_attach_entry (hss_cache_t *hc, u32 ce_index, u8 **data,
- u64 *data_len)
+ u64 *data_len, u8 **last_modified)
{
hss_cache_entry_t *ce;
@@ -162,6 +164,7 @@ hss_cache_attach_entry (hss_cache_t *hc, u32 ce_index, u8 **data,
ce->inuse++;
*data = ce->data;
*data_len = vec_len (ce->data);
+ *last_modified = ce->last_modified;
/* Update the cache entry, mark it in-use */
lru_update (hc, ce, vlib_time_now (vlib_get_main ()));
@@ -209,16 +212,15 @@ hss_cache_lookup (hss_cache_t *hc, u8 *path)
u32
hss_cache_lookup_and_attach (hss_cache_t *hc, u8 *path, u8 **data,
- u64 *data_len)
+ u64 *data_len, u8 **last_modified)
{
u32 ce_index;
-
/* Make sure nobody removes the entry while we look it up */
hss_cache_lock (hc);
ce_index = hss_cache_lookup (hc, path);
if (ce_index != ~0)
- hss_cache_attach_entry (hc, ce_index, data, data_len);
+ hss_cache_attach_entry (hc, ce_index, data, data_len, last_modified);
hss_cache_unlock (hc);
@@ -260,6 +262,7 @@ hss_cache_do_evictions (hss_cache_t *hc)
hc->cache_evictions++;
vec_free (ce->filename);
vec_free (ce->data);
+ vec_free (ce->last_modified);
if (hc->debug_level > 1)
clib_warning ("pool put index %d", ce - hc->cache_pool);
@@ -271,13 +274,15 @@ hss_cache_do_evictions (hss_cache_t *hc)
}
u32
-hss_cache_add_and_attach (hss_cache_t *hc, u8 *path, u8 **data, u64 *data_len)
+hss_cache_add_and_attach (hss_cache_t *hc, u8 *path, u8 **data, u64 *data_len,
+ u8 **last_modified)
{
BVT (clib_bihash_kv) kv;
hss_cache_entry_t *ce;
clib_error_t *error;
u8 *file_data;
u32 ce_index;
+ struct stat dm;
hss_cache_lock (hc);
@@ -298,11 +303,17 @@ hss_cache_add_and_attach (hss_cache_t *hc, u8 *path, u8 **data, u64 *data_len)
pool_get_zero (hc->cache_pool, ce);
ce->filename = vec_dup (path);
ce->data = file_data;
+ if (stat ((char *) path, &dm) == 0)
+ {
+ ce->last_modified =
+ format (0, "%U GMT", format_clib_timebase_time, (f64) dm.st_mtime);
+ }
/* Attach cache entry without additional lock */
ce->inuse++;
*data = file_data;
*data_len = vec_len (file_data);
+ *last_modified = ce->last_modified;
lru_add (hc, ce, vlib_time_now (vlib_get_main ()));
hc->cache_size += vec_len (ce->data);
@@ -364,6 +375,7 @@ hss_cache_clear (hss_cache_t *hc)
hc->cache_evictions++;
vec_free (ce->filename);
vec_free (ce->data);
+ vec_free (ce->last_modified);
if (hc->debug_level > 1)
clib_warning ("pool put index %d", ce - hc->cache_pool);
pool_put (hc->cache_pool, ce);
diff --git a/src/plugins/http_static/http_cache.h b/src/plugins/http_static/http_cache.h
index a89ed5e7e94..21f71a924d5 100644
--- a/src/plugins/http_static/http_cache.h
+++ b/src/plugins/http_static/http_cache.h
@@ -22,6 +22,9 @@ typedef struct hss_cache_entry_
{
/** Name of the file */
u8 *filename;
+ /** Last modified date, format:
+ * <day-name>, <day> <month> <year> <hour>:<minute>:<second> GMT */
+ u8 *last_modified;
/** Contents of the file, as a u8 * vector */
u8 *data;
/** Last time the cache entry was used */
@@ -58,9 +61,9 @@ typedef struct hss_cache_
} hss_cache_t;
u32 hss_cache_lookup_and_attach (hss_cache_t *hc, u8 *path, u8 **data,
- u64 *data_len);
+ u64 *data_len, u8 **last_modified);
u32 hss_cache_add_and_attach (hss_cache_t *hc, u8 *path, u8 **data,
- u64 *data_len);
+ u64 *data_len, u8 **last_modified);
void hss_cache_detach_entry (hss_cache_t *hc, u32 ce_index);
u32 hss_cache_clear (hss_cache_t *hc);
void hss_cache_init (hss_cache_t *hc, uword cache_size, u8 debug_level);
diff --git a/src/plugins/http_static/static_server.c b/src/plugins/http_static/static_server.c
index 40de6cb578d..674ce8a0580 100644
--- a/src/plugins/http_static/static_server.c
+++ b/src/plugins/http_static/static_server.c
@@ -411,6 +411,7 @@ try_file_handler (hss_main_t *hsm, hss_session_t *hs, http_req_method_t rt,
u8 *path, *sanitized_path;
u32 ce_index;
http_content_type_t type;
+ u8 *last_modified;
/* Feature not enabled */
if (!hsm->www_root)
@@ -435,8 +436,8 @@ try_file_handler (hss_main_t *hsm, hss_session_t *hs, http_req_method_t rt,
hs->data_offset = 0;
- ce_index =
- hss_cache_lookup_and_attach (&hsm->cache, path, &hs->data, &hs->data_len);
+ ce_index = hss_cache_lookup_and_attach (&hsm->cache, path, &hs->data,
+ &hs->data_len, &last_modified);
if (ce_index == ~0)
{
if (!file_path_is_valid (path))
@@ -455,8 +456,8 @@ try_file_handler (hss_main_t *hsm, hss_session_t *hs, http_req_method_t rt,
sc = try_index_file (hsm, hs, path);
goto done;
}
- ce_index =
- hss_cache_add_and_attach (&hsm->cache, path, &hs->data, &hs->data_len);
+ ce_index = hss_cache_add_and_attach (&hsm->cache, path, &hs->data,
+ &hs->data_len, &last_modified);
if (ce_index == ~0)
{
sc = HTTP_STATUS_INTERNAL_ERROR;
@@ -478,6 +479,9 @@ try_file_handler (hss_main_t *hsm, hss_session_t *hs, http_req_method_t rt,
http_add_header (
&hs->resp_headers, http_header_name_token (HTTP_HEADER_CACHE_CONTROL),
(const char *) hsm->max_age_formatted, vec_len (hsm->max_age_formatted));
+ http_add_header (&hs->resp_headers,
+ http_header_name_token (HTTP_HEADER_LAST_MODIFIED),
+ (const char *) last_modified, vec_len (last_modified));
done:
vec_free (sanitized_path);