X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=src%2Fplugins%2Fhttp_static%2Fstatic_server.c;h=a71136db7d9a0a40aaf35f8f23bc735aebe8a6f2;hb=023521fcb6713e1151a04e4358bb58695dd6e479;hp=0a1eb356fe8545e8cec4ed01e69657c66c52ca0e;hpb=48bdf24ad2a1266f8c6bf4932b92d0165f370171;p=vpp.git diff --git a/src/plugins/http_static/static_server.c b/src/plugins/http_static/static_server.c index 0a1eb356fe8..a71136db7d9 100644 --- a/src/plugins/http_static/static_server.c +++ b/src/plugins/http_static/static_server.c @@ -14,8 +14,6 @@ */ #include -#include -#include #include #include @@ -30,18 +28,6 @@ hss_main_t hss_main; -static void -hss_cache_lock (void) -{ - clib_spinlock_lock (&hss_main.cache_lock); -} - -static void -hss_cache_unlock (void) -{ - clib_spinlock_unlock (&hss_main.cache_lock); -} - static hss_session_t * hss_session_alloc (u32 thread_index) { @@ -81,36 +67,6 @@ hss_session_free (hss_session_t *hs) } } -/** \brief Detach cache entry from session - */ -static void -hss_detach_cache_entry (hss_session_t *hs) -{ - hss_main_t *hsm = &hss_main; - hss_cache_entry_t *ep; - - /* - * Decrement cache pool entry reference count - * Note that if e.g. a file lookup fails, the cache pool index - * won't be set - */ - if (hs->cache_pool_index != ~0) - { - ep = pool_elt_at_index (hsm->cache_pool, hs->cache_pool_index); - ep->inuse--; - if (hsm->debug_level > 1) - clib_warning ("index %d refcnt now %d", hs->cache_pool_index, - ep->inuse); - } - hs->cache_pool_index = ~0; - if (hs->free_data) - vec_free (hs->data); - hs->data = 0; - hs->data_offset = 0; - hs->free_data = 0; - vec_free (hs->path); -} - /** \brief Disconnect a session */ static void @@ -122,129 +78,6 @@ hss_session_disconnect_transport (hss_session_t *hs) vnet_disconnect_session (a); } -/** \brief Sanity-check the forward and reverse LRU lists - */ -static inline void -lru_validate (hss_main_t *hsm) -{ -#if CLIB_DEBUG > 0 - f64 last_timestamp; - u32 index; - int i; - hss_cache_entry_t *ep; - - last_timestamp = 1e70; - for (i = 1, index = hsm->first_index; index != ~0;) - { - ep = pool_elt_at_index (hsm->cache_pool, index); - index = ep->next_index; - /* Timestamps should be smaller (older) as we walk the fwd list */ - if (ep->last_used > last_timestamp) - { - clib_warning ("%d[%d]: last used %.6f, last_timestamp %.6f", - ep - hsm->cache_pool, i, - ep->last_used, last_timestamp); - } - last_timestamp = ep->last_used; - i++; - } - - last_timestamp = 0.0; - for (i = 1, index = hsm->last_index; index != ~0;) - { - ep = pool_elt_at_index (hsm->cache_pool, index); - index = ep->prev_index; - /* Timestamps should be larger (newer) as we walk the rev list */ - if (ep->last_used < last_timestamp) - { - clib_warning ("%d[%d]: last used %.6f, last_timestamp %.6f", - ep - hsm->cache_pool, i, - ep->last_used, last_timestamp); - } - last_timestamp = ep->last_used; - i++; - } -#endif -} - -/** \brief Remove a data cache entry from the LRU lists - */ -static inline void -lru_remove (hss_main_t *hsm, hss_cache_entry_t *ep) -{ - hss_cache_entry_t *next_ep, *prev_ep; - u32 ep_index; - - lru_validate (hsm); - - ep_index = ep - hsm->cache_pool; - - /* Deal with list heads */ - if (ep_index == hsm->first_index) - hsm->first_index = ep->next_index; - if (ep_index == hsm->last_index) - hsm->last_index = ep->prev_index; - - /* Fix next->prev */ - if (ep->next_index != ~0) - { - next_ep = pool_elt_at_index (hsm->cache_pool, ep->next_index); - next_ep->prev_index = ep->prev_index; - } - /* Fix prev->next */ - if (ep->prev_index != ~0) - { - prev_ep = pool_elt_at_index (hsm->cache_pool, ep->prev_index); - prev_ep->next_index = ep->next_index; - } - lru_validate (hsm); -} - -/** \brief Add an entry to the LRU lists, tag w/ supplied timestamp - */ -static inline void -lru_add (hss_main_t *hsm, hss_cache_entry_t *ep, f64 now) -{ - hss_cache_entry_t *next_ep; - u32 ep_index; - - lru_validate (hsm); - - ep_index = ep - hsm->cache_pool; - - /* - * Re-add at the head of the forward LRU list, - * tail of the reverse LRU list - */ - if (hsm->first_index != ~0) - { - next_ep = pool_elt_at_index (hsm->cache_pool, hsm->first_index); - next_ep->prev_index = ep_index; - } - - ep->prev_index = ~0; - - /* ep now the new head of the LRU forward list */ - ep->next_index = hsm->first_index; - hsm->first_index = ep_index; - - /* single session case: also the tail of the reverse LRU list */ - if (hsm->last_index == ~0) - hsm->last_index = ep_index; - ep->last_used = now; - - lru_validate (hsm); -} - -/** \brief Remove and re-add a cache entry from/to the LRU lists - */ -static inline void -lru_update (hss_main_t *hsm, hss_cache_entry_t *ep, f64 now) -{ - lru_remove (hsm, ep); - lru_add (hsm, ep, now); -} - static void start_send_data (hss_session_t *hs, http_status_code_t status) { @@ -367,24 +200,94 @@ try_url_handler (hss_main_t *hsm, hss_session_t *hs, http_req_method_t rt, return 0; } -static int -handle_request (hss_session_t *hs, http_req_method_t rt, u8 *request) +static u8 +file_path_is_valid (u8 *path) { - http_status_code_t sc = HTTP_STATUS_OK; - hss_main_t *hsm = &hss_main; struct stat _sb, *sb = &_sb; - clib_error_t *error; - u8 *path; - if (!try_url_handler (hsm, hs, rt, request)) + if (stat ((char *) path, sb) < 0 /* can't stat the file */ + || (sb->st_mode & S_IFMT) != S_IFREG /* not a regular file */) return 0; - if (!hsm->www_root) + return 1; +} + +static u32 +try_index_file (hss_main_t *hsm, hss_session_t *hs, u8 *path) +{ + u8 *port_str = 0, *redirect; + transport_endpoint_t endpt; + transport_proto_t proto; + int print_port = 0; + u16 local_port; + session_t *ts; + u32 plen; + + /* Remove the trailing space */ + _vec_len (path) -= 1; + plen = vec_len (path); + + /* Append "index.html" */ + if (path[plen - 1] != '/') + path = format (path, "/index.html%c", 0); + else + path = format (path, "index.html%c", 0); + + if (hsm->debug_level > 0) + clib_warning ("trying to find index: %s", path); + + if (!file_path_is_valid (path)) + return HTTP_STATUS_NOT_FOUND; + + /* + * We found an index.html file, build a redirect + */ + vec_delete (path, vec_len (hsm->www_root) - 1, 0); + + ts = session_get (hs->vpp_session_index, hs->thread_index); + session_get_endpoint (ts, &endpt, 1 /* is_local */); + + local_port = clib_net_to_host_u16 (endpt.port); + proto = session_type_transport_proto (ts->session_type); + + if ((proto == TRANSPORT_PROTO_TCP && local_port != 80) || + (proto == TRANSPORT_PROTO_TLS && local_port != 443)) { - sc = HTTP_STATUS_NOT_FOUND; - goto done; + print_port = 1; + port_str = format (0, ":%u", (u32) local_port); } + redirect = + format (0, + "HTTP/1.1 301 Moved Permanently\r\n" + "Location: http%s://%U%s%s\r\n\r\n", + proto == TRANSPORT_PROTO_TLS ? "s" : "", format_ip46_address, + &endpt.ip, endpt.is_ip4, print_port ? port_str : (u8 *) "", path); + + if (hsm->debug_level > 0) + clib_warning ("redirect: %s", redirect); + + vec_free (port_str); + + hs->data = redirect; + hs->data_len = vec_len (redirect); + hs->free_data = 1; + + return HTTP_STATUS_OK; +} + +static int +try_file_handler (hss_main_t *hsm, hss_session_t *hs, http_req_method_t rt, + u8 *request) +{ + http_status_code_t sc = HTTP_STATUS_OK; + u8 *path; + u32 ce_index; + + /* Feature not enabled */ + if (!hsm->www_root) + return -1; + /* * Construct the file to open * Browsers are capable of sporadically including a leading '/' @@ -399,199 +302,57 @@ handle_request (hss_session_t *hs, http_req_method_t rt, u8 *request) if (hsm->debug_level > 0) clib_warning ("%s '%s'", (rt == HTTP_REQ_GET) ? "GET" : "POST", path); - /* Try to find the file. 2x special cases to find index.html */ - if (stat ((char *) path, sb) < 0 /* cant even stat the file */ - || sb->st_size < 20 /* file too small */ - || (sb->st_mode & S_IFMT) != S_IFREG /* not a regular file */ ) - { - u32 save_length = vec_len (path) - 1; - /* Try appending "index.html"... */ - _vec_len (path) -= 1; - path = format (path, "index.html%c", 0); - if (stat ((char *) path, sb) < 0 /* cant even stat the file */ - || sb->st_size < 20 /* file too small */ - || (sb->st_mode & S_IFMT) != S_IFREG /* not a regular file */ ) - { - _vec_len (path) = save_length; - path = format (path, "/index.html%c", 0); + if (hs->data && hs->free_data) + vec_free (hs->data); - /* Send a redirect, otherwise the browser will confuse itself */ - if (stat ((char *) path, sb) < 0 /* cant even stat the file */ - || sb->st_size < 20 /* file too small */ - || (sb->st_mode & S_IFMT) != S_IFREG /* not a regular file */ ) - { - sc = HTTP_STATUS_NOT_FOUND; - goto done; - } - else - { - transport_endpoint_t endpoint; - transport_proto_t proto; - u16 local_port; - int print_port = 0; - u8 *port_str = 0; - session_t *ts; - - /* - * To make this bit work correctly, we need to know our local - * IP address, etc. and send it in the redirect... - */ - u8 *redirect; - - vec_delete (path, vec_len (hsm->www_root) - 1, 0); - - ts = session_get (hs->vpp_session_index, hs->thread_index); - session_get_endpoint (ts, &endpoint, 1 /* is_local */); - - local_port = clib_net_to_host_u16 (endpoint.port); - - proto = session_type_transport_proto (ts->session_type); - - if ((proto == TRANSPORT_PROTO_TCP && local_port != 80) - || (proto == TRANSPORT_PROTO_TLS && local_port != 443)) - { - print_port = 1; - port_str = format (0, ":%u", (u32) local_port); - } - - redirect = format (0, "HTTP/1.1 301 Moved Permanently\r\n" - "Location: http%s://%U%s%s\r\n\r\n", - proto == TRANSPORT_PROTO_TLS ? "s" : "", - format_ip46_address, &endpoint.ip, - endpoint.is_ip4, - print_port ? port_str : (u8 *) "", path); - if (hsm->debug_level > 0) - clib_warning ("redirect: %s", redirect); - - vec_free (port_str); - - hs->data = redirect; - goto done; - } - } - } + hs->path = path; + hs->data_offset = 0; - /* find or read the file if we haven't done so yet. */ - if (hs->data == 0) + ce_index = + hss_cache_lookup_and_attach (&hsm->cache, path, &hs->data, &hs->data_len); + if (ce_index == ~0) { - BVT (clib_bihash_kv) kv; - hss_cache_entry_t *ce; - - hs->path = path; - - /* First, try the cache */ - kv.key = (u64) hs->path; - if (BV (clib_bihash_search) (&hsm->name_to_data, &kv, &kv) == 0) + if (!file_path_is_valid (path)) { - if (hsm->debug_level > 1) - clib_warning ("lookup '%s' returned %lld", kv.key, kv.value); - - hss_cache_lock (); - - /* found the data.. */ - ce = pool_elt_at_index (hsm->cache_pool, kv.value); - hs->data = ce->data; - /* Update the cache entry, mark it in-use */ - lru_update (hsm, ce, vlib_time_now (vlib_get_main ())); - hs->cache_pool_index = ce - hsm->cache_pool; - ce->inuse++; - if (hsm->debug_level > 1) - clib_warning ("index %d refcnt now %d", hs->cache_pool_index, - ce->inuse); - - hss_cache_unlock (); + sc = try_index_file (hsm, hs, path); + goto done; } - else + ce_index = + hss_cache_add_and_attach (&hsm->cache, path, &hs->data, &hs->data_len); + if (ce_index == ~0) { - hss_cache_lock (); - - if (hsm->debug_level > 1) - clib_warning ("lookup '%s' failed", kv.key, kv.value); - /* Need to recycle one (or more cache) entries? */ - if (hsm->cache_size > hsm->cache_limit) - { - int free_index = hsm->last_index; - - while (free_index != ~0) - { - /* pick the LRU */ - ce = pool_elt_at_index (hsm->cache_pool, free_index); - free_index = ce->prev_index; - /* Which could be in use... */ - if (ce->inuse) - { - if (hsm->debug_level > 1) - clib_warning ("index %d in use refcnt %d", - ce - hsm->cache_pool, ce->inuse); - } - kv.key = (u64) (ce->filename); - kv.value = ~0ULL; - if (BV (clib_bihash_add_del) (&hsm->name_to_data, &kv, - 0 /* is_add */ ) < 0) - { - clib_warning ("LRU delete '%s' FAILED!", ce->filename); - } - else if (hsm->debug_level > 1) - clib_warning ("LRU delete '%s' ok", ce->filename); - - lru_remove (hsm, ce); - hsm->cache_size -= vec_len (ce->data); - hsm->cache_evictions++; - vec_free (ce->filename); - vec_free (ce->data); - if (hsm->debug_level > 1) - clib_warning ("pool put index %d", ce - hsm->cache_pool); - pool_put (hsm->cache_pool, ce); - if (hsm->cache_size < hsm->cache_limit) - break; - } - } - - /* Read the file */ - error = clib_file_contents ((char *) (hs->path), &hs->data); - if (error) - { - clib_warning ("Error reading '%s'", hs->path); - clib_error_report (error); - sc = HTTP_STATUS_INTERNAL_ERROR; - hss_cache_unlock (); - goto done; - } - /* Create a cache entry for it */ - pool_get_zero (hsm->cache_pool, ce); - ce->filename = vec_dup (hs->path); - ce->data = hs->data; - hs->cache_pool_index = ce - hsm->cache_pool; - ce->inuse++; - if (hsm->debug_level > 1) - clib_warning ("index %d refcnt now %d", hs->cache_pool_index, - ce->inuse); - lru_add (hsm, ce, vlib_time_now (vlib_get_main ())); - kv.key = (u64) vec_dup (hs->path); - kv.value = ce - hsm->cache_pool; - /* Add to the lookup table */ - if (hsm->debug_level > 1) - clib_warning ("add '%s' value %lld", kv.key, kv.value); - - if (BV (clib_bihash_add_del) (&hsm->name_to_data, &kv, - 1 /* is_add */ ) < 0) - { - clib_warning ("BUG: add failed!"); - } - hsm->cache_size += vec_len (ce->data); - - hss_cache_unlock (); + sc = HTTP_STATUS_INTERNAL_ERROR; + goto done; } - hs->data_offset = 0; } + hs->cache_pool_index = ce_index; + done: start_send_data (hs, sc); if (!hs->data) hss_session_disconnect_transport (hs); - return sc; + return 0; +} + +static int +handle_request (hss_session_t *hs, http_req_method_t rt, u8 *request) +{ + hss_main_t *hsm = &hss_main; + + if (!try_url_handler (hsm, hs, rt, request)) + return 0; + + if (!try_file_handler (hsm, hs, rt, request)) + return 0; + + /* Handler did not find anything return 404 */ + start_send_data (hs, HTTP_STATUS_NOT_FOUND); + hss_session_disconnect_transport (hs); + + return 0; } static int @@ -732,6 +493,7 @@ hss_add_segment_callback (u32 client_index, u64 segment_handle) static void hss_ts_cleanup (session_t *s, session_cleanup_ntf_t ntf) { + hss_main_t *hsm = &hss_main; hss_session_t *hs; if (ntf == SESSION_CLEANUP_TRANSPORT) @@ -741,7 +503,19 @@ hss_ts_cleanup (session_t *s, session_cleanup_ntf_t ntf) if (!hs) return; - hss_detach_cache_entry (hs); + if (hs->cache_pool_index != ~0) + { + hss_cache_detach_entry (&hsm->cache, hs->cache_pool_index); + hs->cache_pool_index = ~0; + } + + if (hs->free_data) + vec_free (hs->data); + hs->data = 0; + hs->data_offset = 0; + hs->free_data = 0; + vec_free (hs->path); + hss_session_free (hs); } @@ -873,8 +647,6 @@ hss_create (vlib_main_t *vm) num_threads = 1 /* main thread */ + vtm->n_threads; vec_validate (hsm->sessions, num_threads - 1); - clib_spinlock_init (&hsm->cache_lock); - if (hss_attach ()) { clib_warning ("failed to attach server"); @@ -886,8 +658,8 @@ hss_create (vlib_main_t *vm) return -1; } - /* Init path-to-cache hash table */ - BV (clib_bihash_init) (&hsm->name_to_data, "http cache", 128, 32 << 20); + if (hsm->www_root) + hss_cache_init (&hsm->cache, hsm->cache_size, hsm->debug_level); if (hsm->enable_url_handlers) hss_url_handlers_init (hsm); @@ -911,8 +683,7 @@ hss_create_command_fn (vlib_main_t *vm, unformat_input_t *input, hsm->prealloc_fifos = 0; hsm->private_segment_size = 0; hsm->fifo_size = 0; - /* 10mb cache limit, before LRU occurs */ - hsm->cache_limit = 10 << 20; + hsm->cache_size = 10 << 20; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) @@ -931,7 +702,7 @@ hss_create_command_fn (vlib_main_t *vm, unformat_input_t *input, else if (unformat (line_input, "fifo-size %d", &hsm->fifo_size)) hsm->fifo_size <<= 10; else if (unformat (line_input, "cache-size %U", unformat_memory_size, - &hsm->cache_limit)) + &hsm->cache_size)) ; else if (unformat (line_input, "uri %s", &hsm->uri)) ; @@ -964,7 +735,7 @@ no_input: goto done; } - if (hsm->cache_limit < (128 << 10)) + if (hsm->cache_size < (128 << 10)) { error = clib_error_return (0, "cache-size must be at least 128kb"); vec_free (hsm->www_root); @@ -1005,25 +776,6 @@ VLIB_CLI_COMMAND (hss_create_command, static) = { .function = hss_create_command_fn, }; -/** \brief format a file cache entry - */ -static u8 * -format_hss_cache_entry (u8 *s, va_list *args) -{ - hss_cache_entry_t *ep = va_arg (*args, hss_cache_entry_t *); - f64 now = va_arg (*args, f64); - - /* Header */ - if (ep == 0) - { - s = format (s, "%40s%12s%20s", "File", "Size", "Age"); - return s; - } - s = format (s, "%40s%12lld%20.2f", ep->filename, vec_len (ep->data), - now - ep->last_used); - return s; -} - static u8 * format_hss_session (u8 *s, va_list *args) { @@ -1040,13 +792,8 @@ static clib_error_t * hss_show_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd) { + int verbose = 0, show_cache = 0, show_sessions = 0; hss_main_t *hsm = &hss_main; - hss_cache_entry_t *ep, **entries = 0; - int verbose = 0; - int show_cache = 0; - int show_sessions = 0; - u32 index; - f64 now; if (hsm->www_root == 0) return clib_error_return (0, "Static server disabled"); @@ -1069,32 +816,7 @@ hss_show_command_fn (vlib_main_t *vm, unformat_input_t *input, return clib_error_return (0, "specify one or more of cache, sessions"); if (show_cache) - { - if (verbose == 0) - { - vlib_cli_output - (vm, "www_root %s, cache size %lld bytes, limit %lld bytes, " - "evictions %lld", - hsm->www_root, hsm->cache_size, hsm->cache_limit, - hsm->cache_evictions); - return 0; - } - - now = vlib_time_now (vm); - - vlib_cli_output (vm, "%U", format_hss_cache_entry, 0 /* header */, now); - - for (index = hsm->first_index; index != ~0;) - { - ep = pool_elt_at_index (hsm->cache_pool, index); - index = ep->next_index; - vlib_cli_output (vm, "%U", format_hss_cache_entry, ep, now); - } - - vlib_cli_output (vm, "%40s%12lld", "Total Size", hsm->cache_size); - - vec_free (entries); - } + vlib_cli_output (vm, "%U", format_hss_cache, &hsm->cache, verbose); if (show_sessions) { @@ -1102,14 +824,11 @@ hss_show_command_fn (vlib_main_t *vm, unformat_input_t *input, hss_session_t *hs; int i, j; - hss_cache_lock (); for (i = 0; i < vec_len (hsm->sessions); i++) { pool_foreach (hs, hsm->sessions[i]) - { vec_add1 (session_indices, hs - hsm->sessions[i]); - } for (j = 0; j < vec_len (session_indices); j++) { @@ -1120,7 +839,6 @@ hss_show_command_fn (vlib_main_t *vm, unformat_input_t *input, } vec_reset_length (session_indices); } - hss_cache_unlock (); vec_free (session_indices); } return 0; @@ -1147,48 +865,13 @@ hss_clear_cache_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd) { hss_main_t *hsm = &hss_main; - hss_cache_entry_t *ce; - u32 free_index; u32 busy_items = 0; - BVT (clib_bihash_kv) kv; if (hsm->www_root == 0) return clib_error_return (0, "Static server disabled"); - hss_cache_lock (); + busy_items = hss_cache_clear (&hsm->cache); - /* Walk the LRU list to find active entries */ - free_index = hsm->last_index; - while (free_index != ~0) - { - ce = pool_elt_at_index (hsm->cache_pool, free_index); - free_index = ce->prev_index; - /* Which could be in use... */ - if (ce->inuse) - { - busy_items++; - free_index = ce->next_index; - continue; - } - kv.key = (u64) (ce->filename); - kv.value = ~0ULL; - if (BV (clib_bihash_add_del) (&hsm->name_to_data, &kv, - 0 /* is_add */ ) < 0) - { - clib_warning ("BUG: cache clear delete '%s' FAILED!", ce->filename); - } - - lru_remove (hsm, ce); - hsm->cache_size -= vec_len (ce->data); - hsm->cache_evictions++; - vec_free (ce->filename); - vec_free (ce->data); - if (hsm->debug_level > 1) - clib_warning ("pool put index %d", ce - hsm->cache_pool); - pool_put (hsm->cache_pool, ce); - free_index = hsm->last_index; - } - hss_cache_unlock (); if (busy_items > 0) vlib_cli_output (vm, "Note: %d busy items still in cache...", busy_items); else @@ -1220,7 +903,6 @@ hss_main_init (vlib_main_t *vm) hsm->app_index = ~0; hsm->vlib_main = vm; - hsm->first_index = hsm->last_index = ~0; return 0; }