1 files changed, 0 insertions, 382 deletions

diff --git a/web/server/h2o/streaming.c b/web/server/h2o/streaming.c
deleted file mode 100644
index 063e487a..00000000
--- a/web/server/h2o/streaming.c
+++ /dev/null
@@ -1,382 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "streaming.h"
-#include "connlist.h"
-#include "h2o_utils.h"
-#include "streaming/common.h"
-
-static int pending_write_reqs = 0;
-
-#define H2O2STREAM_BUF_SIZE (1024 * 1024)
-
-// h2o_stream_conn_t related functions
-void h2o_stream_conn_t_init(h2o_stream_conn_t *conn)
-{
-    memset(conn, 0, sizeof(*conn));
-    conn->rx = rbuf_create(H2O2STREAM_BUF_SIZE);
-    conn->tx = rbuf_create(H2O2STREAM_BUF_SIZE);
-
-    pthread_mutex_init(&conn->rx_buf_lock, NULL);
-    pthread_mutex_init(&conn->tx_buf_lock, NULL);
-    pthread_cond_init(&conn->rx_buf_cond, NULL);
-    // no need to check for NULL as rbuf_create uses mallocz internally
-}
-
-void h2o_stream_conn_t_destroy(h2o_stream_conn_t *conn)
-{
-    rbuf_free(conn->rx);
-    rbuf_free(conn->tx);
-
-    freez(conn->url);
-    freez(conn->user_agent);
-
-    pthread_mutex_destroy(&conn->rx_buf_lock);
-    pthread_mutex_destroy(&conn->tx_buf_lock);
-    pthread_cond_destroy(&conn->rx_buf_cond);
-}
-
-// streaming upgrade related functions
-int is_streaming_handshake(h2o_req_t *req)
-{
-    /* method */
-    if (!h2o_memis(req->input.method.base, req->input.method.len, H2O_STRLIT("GET")))
-        return 1;
-
-    if (!h2o_memis(req->path_normalized.base, req->path_normalized.len, H2O_STRLIT(NETDATA_STREAM_URL))) {
-        return 1;
-    }
-
-    /* upgrade header */
-    if (req->upgrade.base == NULL || !h2o_lcstris(req->upgrade.base, req->upgrade.len, H2O_STRLIT(NETDATA_STREAM_PROTO_NAME)))
-        return 1;
-
-    // TODO consider adding some key in form of random number
-    // to prevent caching on route especially if TLS is not used
-    // e.g. client sends random number
-    // server replies with it xored
-
-    return 0;
-}
-
-static void stream_on_close(h2o_stream_conn_t *conn);
-void stream_process(h2o_stream_conn_t *conn, int initial);
-
-void stream_on_complete(void *user_data, h2o_socket_t *sock, size_t reqsize)
-{
-    h2o_stream_conn_t *conn = user_data;
-
-    /* close the connection on error */
-    if (sock == NULL) {
-        stream_on_close(conn);
-        return;
-    }
-
-    conn->sock = sock;
-    sock->data = conn;
-
-    conn_list_insert(&conn_list, conn);
-
-    h2o_buffer_consume(&sock->input, reqsize);
-    stream_process(conn, 1);
-}
-
-// handling of active streams
-static void stream_on_close(h2o_stream_conn_t *conn)
-{
-    if (conn->sock != NULL)
-        h2o_socket_close(conn->sock);
-
-    conn_list_remove_conn(&conn_list, conn);
-
-    pthread_mutex_lock(&conn->rx_buf_lock);
-    conn->shutdown = 1;
-    pthread_cond_broadcast(&conn->rx_buf_cond);
-    pthread_mutex_unlock(&conn->rx_buf_lock);
-
-    h2o_stream_conn_t_destroy(conn);
-    freez(conn);
-}
-
-static void on_write_complete(h2o_socket_t *sock, const char *err)
-{
-    h2o_stream_conn_t *conn = sock->data;
-
-    if (err != NULL) {
-        stream_on_close(conn);
-        error_report("Streaming connection error \"%s\"", err);
-        return;
-    }
-
-    pthread_mutex_lock(&conn->tx_buf_lock);
-
-    rbuf_bump_tail(conn->tx, conn->tx_buf.len);
-
-    conn->tx_buf.base = NULL;
-    conn->tx_buf.len = 0;
-
-    pthread_mutex_unlock(&conn->tx_buf_lock);
-
-    stream_process(conn, 0);
-}
-
-static void stream_on_recv(h2o_socket_t *sock, const char *err)
-{
-    h2o_stream_conn_t *conn = sock->data;
-
-    if (err != NULL) {
-        stream_on_close(conn);
-        error_report("Streaming connection error \"%s\"", err);
-        return;
-    }
-    stream_process(conn, 0);
-}
-
-#define PARSE_DONE 1
-#define PARSE_ERROR -1
-#define GIMME_MORE_OF_DEM_SWEET_BYTEZ 0
-
-#define STREAM_METHOD "STREAM "
-#define USER_AGENT "User-Agent: "
-
-#define NEED_MIN_BYTES(buf, bytes)       \
-if (rbuf_bytes_available(buf) < bytes)   \
-    return GIMME_MORE_OF_DEM_SWEET_BYTEZ;
-
-// TODO check in streaming code this is probably defined somewhere already
-#define MAX_LEN_STREAM_HELLO (1024*2)
-
-static int process_STREAM_X_HTTP_1_1(http_stream_parse_state_t *parser_state, rbuf_t buf, char **url, char **user_agent)
-{
-    int idx;
-    switch(*parser_state) {
-        case HTTP_STREAM:
-            NEED_MIN_BYTES(buf, strlen(STREAM_METHOD));
-            if (rbuf_memcmp_n(buf, H2O_STRLIT(STREAM_METHOD))) {
-                error_report("Expected \"%s\"", STREAM_METHOD);
-                return PARSE_ERROR;
-            }
-            rbuf_bump_tail(buf, strlen(STREAM_METHOD));
-            *parser_state = HTTP_URL;
-            /* FALLTHROUGH */
-        case HTTP_URL:
-            if (!rbuf_find_bytes(buf, " ", 1, &idx)) {
-                if (rbuf_bytes_available(buf) >= MAX_LEN_STREAM_HELLO) {
-                    error_report("The initial \"STREAM [URL]" HTTP_1_1 "\" over max of %d", MAX_LEN_STREAM_HELLO);
-                    return PARSE_ERROR;
-                }
-            }
-            *url = mallocz(idx + 1);
-            rbuf_pop(buf, *url, idx);
-            (*url)[idx] = 0;
-
-            *parser_state = HTTP_PROTO;
-            /* FALLTHROUGH */
-        case HTTP_PROTO:
-            NEED_MIN_BYTES(buf, strlen(HTTP_1_1));
-            if (rbuf_memcmp_n(buf, H2O_STRLIT(HTTP_1_1))) {
-                error_report("Expected \"%s\"", HTTP_1_1);
-                return PARSE_ERROR;
-            }
-            rbuf_bump_tail(buf, strlen(HTTP_1_1));
-            *parser_state = HTTP_USER_AGENT_KEY;
-            /* FALLTHROUGH */
-        case HTTP_USER_AGENT_KEY:
-            // and OF COURSE EVERYTHING is passed in URL except
-            // for user agent which we need and is passed as HTTP header
-            // not worth writing a parser for this so we manually extract
-            // just the single header we need and skip everything else
-            if (!rbuf_find_bytes(buf, USER_AGENT, strlen(USER_AGENT), &idx)) {
-                if (rbuf_bytes_available(buf) >= (size_t)(rbuf_get_capacity(buf) * 0.9)) {
-                    error_report("The initial \"STREAM [URL]" HTTP_1_1 "\" over max of %d", MAX_LEN_STREAM_HELLO);
-                    return PARSE_ERROR;
-                }
-                return GIMME_MORE_OF_DEM_SWEET_BYTEZ;
-            }
-            rbuf_bump_tail(buf, idx + strlen(USER_AGENT));
-            *parser_state = HTTP_USER_AGENT_VALUE;
-            /* FALLTHROUGH */
-        case HTTP_USER_AGENT_VALUE:
-            if (!rbuf_find_bytes(buf, "\r\n", 2, &idx)) {
-                if (rbuf_bytes_available(buf) >= (size_t)(rbuf_get_capacity(buf) * 0.9)) {
-                    error_report("The initial \"STREAM [URL]" HTTP_1_1 "\" over max of %d", MAX_LEN_STREAM_HELLO);
-                    return PARSE_ERROR;
-                }
-                return GIMME_MORE_OF_DEM_SWEET_BYTEZ;
-            }
-
-            *user_agent = mallocz(idx + 1);
-            rbuf_pop(buf, *user_agent, idx);
-            (*user_agent)[idx] = 0;
-
-            *parser_state = HTTP_HDR;
-            /* FALLTHROUGH */
-        case HTTP_HDR:
-            if (!rbuf_find_bytes(buf, HTTP_HDR_END, strlen(HTTP_HDR_END), &idx)) {
-                if (rbuf_bytes_available(buf) >= (size_t)(rbuf_get_capacity(buf) * 0.9)) {
-                    error_report("The initial \"STREAM [URL]" HTTP_1_1 "\" over max of %d", MAX_LEN_STREAM_HELLO);
-                    return PARSE_ERROR;
-                }
-                return GIMME_MORE_OF_DEM_SWEET_BYTEZ;
-            }
-            rbuf_bump_tail(buf, idx + strlen(HTTP_HDR_END));
-
-            *parser_state = HTTP_DONE;
-            return PARSE_DONE;
-        case HTTP_DONE:
-            error_report("Parsing is done. No need to call again.");
-            return PARSE_DONE;
-        default:
-            error_report("Unknown parser state %d", (int)*parser_state);
-            return PARSE_ERROR;
-    }
-}
-
-#define SINGLE_WRITE_MAX (1024)
-
-void stream_process(h2o_stream_conn_t *conn, int initial)
-{
-    int rc;
-    struct web_client w;
-
-    pthread_mutex_lock(&conn->tx_buf_lock);
-    if (h2o_socket_is_writing(conn->sock) || rbuf_bytes_available(conn->tx)) {
-        if (rbuf_bytes_available(conn->tx) && !conn->tx_buf.base) {
-            conn->tx_buf.base = rbuf_get_linear_read_range(conn->tx, &conn->tx_buf.len);
-            if (conn->tx_buf.base) {
-                conn->tx_buf.len = MIN(conn->tx_buf.len, SINGLE_WRITE_MAX);
-                h2o_socket_write(conn->sock, &conn->tx_buf, 1, on_write_complete);
-            }
-        }
-    }
-    pthread_mutex_unlock(&conn->tx_buf_lock);
-
-    if (initial)
-        h2o_socket_read_start(conn->sock, stream_on_recv);
-
-    if (conn->sock->input->size) {
-        size_t insert_max;
-        pthread_mutex_lock(&conn->rx_buf_lock);
-        char *insert_loc = rbuf_get_linear_insert_range(conn->rx, &insert_max);
-        if (insert_loc == NULL) {
-            pthread_cond_broadcast(&conn->rx_buf_cond);
-            pthread_mutex_unlock(&conn->rx_buf_lock);
-            return;
-        }
-        insert_max = MIN(insert_max, conn->sock->input->size);
-        memcpy(insert_loc, conn->sock->input->bytes, insert_max);
-        rbuf_bump_head(conn->rx, insert_max);
-
-        h2o_buffer_consume(&conn->sock->input, insert_max);
-
-        pthread_cond_broadcast(&conn->rx_buf_cond);
-        pthread_mutex_unlock(&conn->rx_buf_lock);
-    }
-
-    switch (conn->state) {
-        case STREAM_X_HTTP_1_1:
-            // no conn->rx lock here as at this point we are still single threaded
-            // until we call rrdpush_receiver_thread_spawn() later down
-            rc = process_STREAM_X_HTTP_1_1(&conn->parse_state, conn->rx, &conn->url, &conn->user_agent);
-            if (rc == PARSE_ERROR) {
-                error_report("error parsing the STREAM hello");
-                break;
-            }
-            if (rc != PARSE_DONE)
-                break;
-            conn->state = STREAM_X_HTTP_1_1_DONE;
-            /* FALLTHROUGH */
-        case STREAM_X_HTTP_1_1_DONE:
-            memset(&w, 0, sizeof(w));
-            w.response.data = buffer_create(1024, NULL);
-
-            // get client ip from the conn->sock
-            struct sockaddr client;
-            socklen_t len = h2o_socket_getpeername(conn->sock, &client);
-            char peername[NI_MAXHOST];
-            size_t peername_len = h2o_socket_getnumerichost(&client, len, peername);
-            size_t cpy_len = sizeof(w.client_ip) < peername_len ? sizeof(w.client_ip) : peername_len;
-            memcpy(w.client_ip, peername, cpy_len);
-            w.client_ip[cpy_len - 1] = 0;
-            w.user_agent = conn->user_agent;
-
-            rc = rrdpush_receiver_thread_spawn(&w, conn->url, conn);
-            if (rc != HTTP_RESP_OK) {
-                error_report("HTTPD Failed to spawn the receiver thread %d", rc);
-                conn->state = STREAM_CLOSE;
-                stream_on_close(conn);
-            } else {
-                conn->state = STREAM_ACTIVE;
-            }
-            buffer_free(w.response.data);
-            /* FALLTHROUGH */
-        case STREAM_ACTIVE:
-            break;
-        default:
-            error_report("Unknown conn->state");
-    }
-}
-
-// read and write functions to be used by streaming parser
-int h2o_stream_write(void *ctx, const char *data, size_t data_len)
-{
-    h2o_stream_conn_t *conn = (h2o_stream_conn_t *)ctx;
-
-    pthread_mutex_lock(&conn->tx_buf_lock);
-    size_t avail = rbuf_bytes_free(conn->tx);
-    avail = MIN(avail, data_len);
-    rbuf_push(conn->tx, data, avail);
-    pthread_mutex_unlock(&conn->tx_buf_lock);
-    __atomic_add_fetch(&pending_write_reqs, 1, __ATOMIC_SEQ_CST);
-    return avail;
-}
-
-size_t h2o_stream_read(void *ctx, char *buf, size_t read_bytes)
-{
-    int ret;
-    h2o_stream_conn_t *conn = (h2o_stream_conn_t *)ctx;
-
-    pthread_mutex_lock(&conn->rx_buf_lock);
-    size_t avail = rbuf_bytes_available(conn->rx);
-
-    if (!avail) {
-        if (conn->shutdown) {
-            pthread_mutex_unlock(&conn->rx_buf_lock);
-            return -1;
-        }
-        pthread_cond_wait(&conn->rx_buf_cond, &conn->rx_buf_lock);
-        if (conn->shutdown) {
-            pthread_mutex_unlock(&conn->rx_buf_lock);
-            return -1;
-        }
-        avail = rbuf_bytes_available(conn->rx);
-        if (!avail) {
-            pthread_mutex_unlock(&conn->rx_buf_lock);
-            return 0;
-        }
-    }
-
-    avail = MIN(avail, read_bytes);
-
-    ret = rbuf_pop(conn->rx, buf, avail);
-    pthread_mutex_unlock(&conn->rx_buf_lock);
-
-    return ret;
-}
-
-// periodic check for pending write requests
-void check_tx_buf(h2o_stream_conn_t *conn)
-{
-    pthread_mutex_lock(&conn->tx_buf_lock);
-    if (rbuf_bytes_available(conn->tx)) {
-        pthread_mutex_unlock(&conn->tx_buf_lock);
-        stream_process(conn, 0);
-    } else
-        pthread_mutex_unlock(&conn->tx_buf_lock);
-}
-
-void h2o_stream_check_pending_write_reqs(void)
-{
-    int _write_reqs = __atomic_exchange_n(&pending_write_reqs, 0, __ATOMIC_SEQ_CST);
-    if (_write_reqs > 0)
-        conn_list_iter_all(&conn_list, check_tx_buf);
-}