--- /dev/null
+/*
+* Copyright (c) 2015-2017 Cisco and/or its affiliates.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at:
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include <vnet/vnet.h>
+#include <vlibmemory/api.h>
+#include <vnet/session/application.h>
+#include <vnet/session/application_interface.h>
+
+/* define message IDs */
+#include <vpp/api/vpe_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_printfun
+
+typedef enum
+{
+ EVENT_WAKEUP = 1,
+} http_process_event_t;
+
+typedef struct
+{
+ u8 *rx_buf;
+ unix_shared_memory_queue_t **vpp_queue;
+ u64 byte_index;
+
+ uword *handler_by_get_request;
+
+ u32 *free_http_cli_process_node_indices;
+
+ /* Sever's event queue */
+ unix_shared_memory_queue_t *vl_input_queue;
+
+ /* API client handle */
+ u32 my_client_index;
+
+ u32 app_index;
+
+ /* process node index for evnt scheduling */
+ u32 node_index;
+ vlib_main_t *vlib_main;
+} http_server_main_t;
+
+http_server_main_t http_server_main;
+
+static void
+free_http_process (stream_session_t * s)
+{
+ vlib_node_runtime_t *rt;
+ vlib_main_t *vm = &vlib_global_main;
+ http_server_main_t *hsm = &http_server_main;
+ vlib_node_t *n;
+ u32 node_index;
+ stream_session_t **save_s;
+
+ node_index = (u64) (s->opaque[0]);
+ ASSERT (node_index != 0);
+
+ n = vlib_get_node (vm, node_index);
+ rt = vlib_node_get_runtime (vm, n->runtime_index);
+ save_s = (stream_session_t **) vlib_node_get_runtime (vm, n->runtime_index);
+
+ /* Reset session saved node index */
+ s->opaque[0] = 0;
+ /* Reset process session pointer */
+ *save_s = 0;
+
+ /* Turn off the process node */
+ vlib_node_set_state (vm, rt->node_index, VLIB_NODE_STATE_DISABLED);
+
+ /* add node index to the freelist */
+ vec_add1 (hsm->free_http_cli_process_node_indices, node_index);
+}
+
+static const char
+ *http_response = "HTTP/1.1 200 OK\r\n"
+ "Content-Type: text/html\r\n"
+ "Expires: Mon, 11 Jan 1970 10:10:10 GMT\r\n"
+ "Connection: close\r\n"
+ "Pragma: no-cache\r\n" "Content-Length: %d\r\n\r\n%s";
+
+static const char
+ *http_error_template = "HTTP/1.1 %s\r\n"
+ "Content-Type: text/html\r\n"
+ "Expires: Mon, 11 Jan 1970 10:10:10 GMT\r\n"
+ "Connection: close\r\n" "Pragma: no-cache\r\n" "Content-Length: 0\r\n\r\n";
+
+/* Header, including incantation to suppress favicon.ico requests */
+static const char
+ *html_header_template = "<html><head><title>%v</title>"
+ "</head><link rel=\"icon\" href=\"data:,\"><body><pre>";
+
+static const char *html_footer = "</pre></body></html>\r\n";
+
+static void
+http_cli_output (uword arg, u8 * buffer, uword buffer_bytes)
+{
+ u8 **output_vecp = (u8 **) arg;
+ u8 *output_vec;
+ u32 offset;
+
+ output_vec = *output_vecp;
+
+ offset = vec_len (output_vec);
+ vec_validate (output_vec, offset + buffer_bytes - 1);
+ clib_memcpy (output_vec + offset, buffer, buffer_bytes);
+
+ *output_vecp = output_vec;
+}
+
+void
+send_data (stream_session_t * s, u8 * data)
+{
+ session_fifo_event_t evt;
+ u32 offset, bytes_to_send;
+ f64 delay = 10e-3;
+ http_server_main_t *hsm = &http_server_main;
+ vlib_main_t *vm = hsm->vlib_main;
+ f64 last_sent_timer = vlib_time_now (vm);
+
+ bytes_to_send = vec_len (data);
+ offset = 0;
+
+ while (bytes_to_send > 0)
+ {
+ int actual_transfer;
+
+ actual_transfer = svm_fifo_enqueue_nowait
+ (s->server_tx_fifo, bytes_to_send, data + offset);
+
+ /* Made any progress? */
+ if (actual_transfer <= 0)
+ {
+ vlib_process_suspend (vm, delay);
+ /* 10s deadman timer */
+ if (vlib_time_now (vm) > last_sent_timer + 10.0)
+ {
+ /* $$$$ FC: reset transport session here? */
+ break;
+ }
+ /* Exponential backoff, within reason */
+ if (delay < 1.0)
+ delay = delay * 2.0;
+ }
+ else
+ {
+ last_sent_timer = vlib_time_now (vm);
+ offset += actual_transfer;
+ bytes_to_send -= actual_transfer;
+
+ if (svm_fifo_set_event (s->server_tx_fifo))
+ {
+ /* Fabricate TX event, send to vpp */
+ evt.fifo = s->server_tx_fifo;
+ evt.event_type = FIFO_EVENT_APP_TX;
+ evt.event_id = 0;
+
+ unix_shared_memory_queue_add (hsm->vpp_queue[s->thread_index],
+ (u8 *) & evt,
+ 0 /* do wait for mutex */ );
+ }
+ delay = 10e-3;
+ }
+ }
+}
+
+static void
+send_error (stream_session_t * s, char *str)
+{
+ u8 *data;
+
+ data = format (0, http_error_template, str);
+ send_data (s, data);
+ vec_free (data);
+}
+
+static uword
+http_cli_process (vlib_main_t * vm,
+ vlib_node_runtime_t * rt, vlib_frame_t * f)
+{
+ http_server_main_t *hsm = &http_server_main;
+ u8 *request = 0, *reply = 0;
+ stream_session_t **save_s;
+ stream_session_t *s;
+ unformat_input_t input;
+ int i;
+ u8 *http = 0, *html = 0;
+
+ save_s = vlib_node_get_runtime_data (hsm->vlib_main, rt->node_index);
+ s = *save_s;
+
+ request = (u8 *) (void *) (s->opaque[1]);
+ s->opaque[1] = 0;
+
+ if (vec_len (request) < 7)
+ {
+ send_error (s, "400 Bad Request");
+ goto out;
+ }
+
+ for (i = 0; i < vec_len (request) - 4; i++)
+ {
+ if (request[i] == 'G' &&
+ request[i + 1] == 'E' &&
+ request[i + 2] == 'T' && request[i + 3] == ' ')
+ goto found;
+ }
+bad_request:
+ send_error (s, "400 Bad Request");
+ goto out;
+
+found:
+ /* Lose "GET " */
+ vec_delete (request, i + 5, 0);
+
+ /* Replace slashes with spaces, stop at the end of the path */
+ i = 0;
+ while (1)
+ {
+ if (request[i] == '/')
+ request[i] = ' ';
+ else if (request[i] == ' ')
+ {
+ /* vlib_cli_input is vector-based, no need for a NULL */
+ _vec_len (request) = i;
+ break;
+ }
+ i++;
+ /* Should never happen */
+ if (i == vec_len (request))
+ goto bad_request;
+ }
+
+ /* Generate the html header */
+ html = format (0, html_header_template, request /* title */ );
+
+ /* Run the command */
+ unformat_init_vector (&input, request);
+ vlib_cli_input (vm, &input, http_cli_output, (uword) & reply);
+ unformat_free (&input);
+ request = 0;
+
+ /* Generate the html page */
+ html = format (html, "%v", reply);
+ html = format (html, html_footer);
+ /* And the http reply */
+ http = format (0, http_response, vec_len (html), html);
+
+ /* Send it */
+ send_data (s, http);
+
+out:
+ /* Cleanup */
+ vec_free (request);
+ vec_free (reply);
+ vec_free (html);
+ vec_free (http);
+
+ free_http_process (s);
+ return (0);
+}
+
+static void
+alloc_http_process (stream_session_t * s)
+{
+ char *name;
+ vlib_node_t *n;
+ http_server_main_t *hsm = &http_server_main;
+ vlib_main_t *vm = hsm->vlib_main;
+ uword l = vec_len (hsm->free_http_cli_process_node_indices);
+ stream_session_t **save_s;
+
+ if (vec_len (hsm->free_http_cli_process_node_indices) > 0)
+ {
+ n = vlib_get_node (vm, hsm->free_http_cli_process_node_indices[l - 1]);
+
+ vlib_node_set_state (vm, n->index, VLIB_NODE_STATE_POLLING);
+
+ _vec_len (hsm->free_http_cli_process_node_indices) = l - 1;
+ }
+ else
+ {
+ static vlib_node_registration_t r = {
+ .function = http_cli_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .process_log2_n_stack_bytes = 16,
+ .runtime_data_bytes = sizeof (void *),
+ };
+
+ name = (char *) format (0, "http-cli-%d", l);
+
+ r.name = name;
+ vlib_register_node (vm, &r);
+ vec_free (name);
+
+ n = vlib_get_node (vm, r.index);
+ }
+
+ /* Save the node index in the stream_session_t. It won't be zero. */
+ s->opaque[0] = (u64) n->index;
+
+ /* Save the stream_session_t (pointer) in the node runtime */
+ save_s = vlib_node_get_runtime_data (vm, n->index);
+ *save_s = s;
+
+ vlib_start_process (vm, n->runtime_index);
+}
+
+static int
+builtin_session_accept_callback (stream_session_t * s)
+{
+ http_server_main_t *bsm = &http_server_main;
+
+ bsm->vpp_queue[s->thread_index] =
+ session_manager_get_vpp_event_queue (s->thread_index);
+ s->session_state = SESSION_STATE_READY;
+ bsm->byte_index = 0;
+ return 0;
+}
+
+static void
+builtin_session_disconnect_callback (stream_session_t * s)
+{
+ http_server_main_t *bsm = &http_server_main;
+ vnet_disconnect_args_t _a, *a = &_a;
+
+ a->handle = stream_session_handle (s);
+ a->app_index = bsm->app_index;
+ vnet_disconnect_session (a);
+}
+
+static void
+builtin_session_reset_callback (stream_session_t * s)
+{
+ clib_warning ("called.. ");
+
+ stream_session_cleanup (s);
+}
+
+
+static int
+builtin_session_connected_callback (u32 app_index, u32 api_context,
+ stream_session_t * s, u8 is_fail)
+{
+ clib_warning ("called...");
+ return -1;
+}
+
+static int
+builtin_add_segment_callback (u32 client_index,
+ const u8 * seg_name, u32 seg_size)
+{
+ clib_warning ("called...");
+ return -1;
+}
+
+static int
+builtin_redirect_connect_callback (u32 client_index, void *mp)
+{
+ clib_warning ("called...");
+ return -1;
+}
+
+static int
+http_server_rx_callback (stream_session_t * s)
+{
+ u32 max_dequeue;
+ int actual_transfer;
+ http_server_main_t *hsm = &http_server_main;
+ svm_fifo_t *rx_fifo;
+
+ rx_fifo = s->server_rx_fifo;
+
+ max_dequeue = svm_fifo_max_dequeue (rx_fifo);
+
+ svm_fifo_unset_event (rx_fifo);
+
+ if (PREDICT_FALSE (max_dequeue == 0))
+ return 0;
+
+ vec_validate (hsm->rx_buf, max_dequeue - 1);
+ _vec_len (hsm->rx_buf) = max_dequeue;
+
+ actual_transfer = svm_fifo_dequeue_nowait (rx_fifo, max_dequeue,
+ hsm->rx_buf);
+ ASSERT (actual_transfer > 0);
+
+ _vec_len (hsm->rx_buf) = actual_transfer;
+
+ /* send the command to a new/recycled vlib process */
+ s->opaque[1] = (u64) vec_dup (hsm->rx_buf);
+
+ alloc_http_process (s);
+ return 0;
+}
+
+static session_cb_vft_t builtin_session_cb_vft = {
+ .session_accept_callback = builtin_session_accept_callback,
+ .session_disconnect_callback = builtin_session_disconnect_callback,
+ .session_connected_callback = builtin_session_connected_callback,
+ .add_segment_callback = builtin_add_segment_callback,
+ .redirect_connect_callback = builtin_redirect_connect_callback,
+ .builtin_server_rx_callback = http_server_rx_callback,
+ .session_reset_callback = builtin_session_reset_callback
+};
+
+/* Abuse VPP's input queue */
+static int
+create_api_loopback (vlib_main_t * vm)
+{
+ http_server_main_t *hsm = &http_server_main;
+ vl_api_memclnt_create_t _m, *mp = &_m;
+ extern void vl_api_memclnt_create_t_handler (vl_api_memclnt_create_t *);
+ api_main_t *am = &api_main;
+ vl_shmem_hdr_t *shmem_hdr;
+ uword *event_data = 0, event_type;
+ int resolved = 0;
+
+ /*
+ * Create a "loopback" API client connection
+ * Don't do things like this unless you know what you're doing...
+ */
+
+ shmem_hdr = am->shmem_hdr;
+ hsm->vl_input_queue = shmem_hdr->vl_input_queue;
+ memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = VL_API_MEMCLNT_CREATE;
+ mp->context = 0xFEEDFACE;
+ mp->input_queue = (u64) hsm->vl_input_queue;
+ strncpy ((char *) mp->name, "tcp_http_server", sizeof (mp->name) - 1);
+
+ vl_api_memclnt_create_t_handler (mp);
+
+ /* Wait for reply */
+ hsm->node_index = vlib_get_current_process (vm)->node_runtime.node_index;
+ vlib_process_wait_for_event_or_clock (vm, 1.0);
+ event_type = vlib_process_get_events (vm, &event_data);
+ switch (event_type)
+ {
+ case 1:
+ resolved = 1;
+ break;
+ case ~0:
+ /* timed out */
+ break;
+ default:
+ clib_warning ("unknown event_type %d", event_type);
+ }
+ if (!resolved)
+ return -1;
+
+ return 0;
+}
+
+static int
+server_attach ()
+{
+ http_server_main_t *hsm = &http_server_main;
+ u8 segment_name[128];
+ u64 options[SESSION_OPTIONS_N_OPTIONS];
+ vnet_app_attach_args_t _a, *a = &_a;
+
+ memset (a, 0, sizeof (*a));
+ memset (options, 0, sizeof (options));
+
+ a->api_client_index = hsm->my_client_index;
+ a->session_cb_vft = &builtin_session_cb_vft;
+ a->options = options;
+ a->options[SESSION_OPTIONS_SEGMENT_SIZE] = 128 << 20;
+ a->options[SESSION_OPTIONS_RX_FIFO_SIZE] = 8 << 10;
+ a->options[SESSION_OPTIONS_TX_FIFO_SIZE] = 32 << 10;
+ a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_BUILTIN_APP;
+ a->segment_name = segment_name;
+ a->segment_name_length = ARRAY_LEN (segment_name);
+
+ if (vnet_application_attach (a))
+ {
+ clib_warning ("failed to attach server");
+ return -1;
+ }
+ hsm->app_index = a->app_index;
+ return 0;
+}
+
+static int
+server_listen ()
+{
+ http_server_main_t *hsm = &http_server_main;
+ vnet_bind_args_t _a, *a = &_a;
+ memset (a, 0, sizeof (*a));
+ a->app_index = hsm->app_index;
+ a->uri = "tcp://0.0.0.0/80";
+ return vnet_bind_uri (a);
+}
+
+static int
+server_create (vlib_main_t * vm)
+{
+ http_server_main_t *hsm = &http_server_main;
+ u32 num_threads;
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
+
+ if (hsm->my_client_index == (u32) ~ 0)
+ {
+ if (create_api_loopback (vm))
+ return -1;
+ }
+
+ num_threads = 1 /* main thread */ + vtm->n_threads;
+ vec_validate (http_server_main.vpp_queue, num_threads - 1);
+
+ if (server_attach ())
+ {
+ clib_warning ("failed to attach server");
+ return -1;
+ }
+ if (server_listen ())
+ {
+ clib_warning ("failed to start listening");
+ return -1;
+ }
+ return 0;
+}
+
+/* Get our api client index */
+static void
+vl_api_memclnt_create_reply_t_handler (vl_api_memclnt_create_reply_t * mp)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ http_server_main_t *hsm = &http_server_main;
+ hsm->my_client_index = mp->index;
+ vlib_process_signal_event (vm, hsm->node_index, 1 /* evt */ ,
+ 0 /* data */ );
+}
+
+#define foreach_tcp_http_server_api_msg \
+_(MEMCLNT_CREATE_REPLY, memclnt_create_reply) \
+
+static clib_error_t *
+tcp_http_server_api_hookup (vlib_main_t * vm)
+{
+ vl_msg_api_msg_config_t _c, *c = &_c;
+
+ /* Hook up client-side static APIs to our handlers */
+#define _(N,n) do { \
+ c->id = VL_API_##N; \
+ c->name = #n; \
+ c->handler = vl_api_##n##_t_handler; \
+ c->cleanup = vl_noop_handler; \
+ c->endian = vl_api_##n##_t_endian; \
+ c->print = vl_api_##n##_t_print; \
+ c->size = sizeof(vl_api_##n##_t); \
+ c->traced = 1; /* trace, so these msgs print */ \
+ c->replay = 0; /* don't replay client create/delete msgs */ \
+ c->message_bounce = 0; /* don't bounce this message */ \
+ vl_msg_api_config(c);} while (0);
+
+ foreach_tcp_http_server_api_msg;
+#undef _
+
+ return 0;
+}
+
+static clib_error_t *
+server_create_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ int rv;
+
+ tcp_http_server_api_hookup (vm);
+ vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ );
+ rv = server_create (vm);
+ switch (rv)
+ {
+ case 0:
+ break;
+ default:
+ return clib_error_return (0, "server_create returned %d", rv);
+ }
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (server_create_command, static) =
+{
+ .path = "test http server",
+ .short_help = "test http server",
+ .function = server_create_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+builtin_http_server_main_init (vlib_main_t * vm)
+{
+ http_server_main_t *hsm = &http_server_main;
+ hsm->my_client_index = ~0;
+ hsm->vlib_main = vm;
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (builtin_http_server_main_init);
+
+/*
+* fd.io coding-style-patch-verification: ON
+*
+* Local Variables:
+* eval: (c-set-style "gnu")
+* End:
+*/
Code Review / vpp.git / commitdiff