diff options
Diffstat (limited to 'thirdparty/lws/output.c')
| -rw-r--r-- | thirdparty/lws/output.c | 883 |
1 files changed, 0 insertions, 883 deletions
diff --git a/thirdparty/lws/output.c b/thirdparty/lws/output.c deleted file mode 100644 index 375ff3ef99..0000000000 --- a/thirdparty/lws/output.c +++ /dev/null @@ -1,883 +0,0 @@ -/* - * libwebsockets - small server side websockets and web server implementation - * - * Copyright (C) 2010-2017 Andy Green <andy@warmcat.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation: - * version 2.1 of the License. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301 USA - */ - -#include "private-libwebsockets.h" - -static int -lws_0405_frame_mask_generate(struct lws *wsi) -{ -#if 0 - wsi->u.ws.mask[0] = 0; - wsi->u.ws.mask[1] = 0; - wsi->u.ws.mask[2] = 0; - wsi->u.ws.mask[3] = 0; -#else - int n; - /* fetch the per-frame nonce */ - - n = lws_get_random(lws_get_context(wsi), wsi->u.ws.mask, 4); - if (n != 4) { - lwsl_parser("Unable to read from random device %s %d\n", - SYSTEM_RANDOM_FILEPATH, n); - return 1; - } -#endif - /* start masking from first byte of masking key buffer */ - wsi->u.ws.mask_idx = 0; - - return 0; -} - -/* - * notice this returns number of bytes consumed, or -1 - */ -int lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len) -{ - struct lws_context *context = lws_get_context(wsi); - struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi]; - size_t real_len = len; - unsigned int n; - int m; - - lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_API_WRITE, 1); - - if (!len) - return 0; - /* just ignore sends after we cleared the truncation buffer */ - if (wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE && - !wsi->trunc_len) - return len; - - if (wsi->trunc_len && (buf < wsi->trunc_alloc || - buf > (wsi->trunc_alloc + wsi->trunc_len + wsi->trunc_offset))) { - char dump[20]; - strncpy(dump, (char *)buf, sizeof(dump) - 1); - dump[sizeof(dump) - 1] = '\0'; -#if defined(LWS_WITH_ESP8266) - lwsl_err("****** %p: Sending new %lu (%s), pending truncated ...\n", - wsi, (unsigned long)len, dump); -#else - lwsl_err("****** %p: Sending new %lu (%s), pending truncated ...\n" - " It's illegal to do an lws_write outside of\n" - " the writable callback: fix your code\n", - wsi, (unsigned long)len, dump); -#endif - assert(0); - - return -1; - } - - m = lws_ext_cb_active(wsi, LWS_EXT_CB_PACKET_TX_DO_SEND, &buf, len); - if (m < 0) - return -1; - if (m) /* handled */ { - n = m; - goto handle_truncated_send; - } - - if (!wsi->http2_substream && !lws_socket_is_valid(wsi->desc.sockfd)) - lwsl_warn("** error invalid sock but expected to send\n"); - - /* limit sending */ - if (wsi->protocol->tx_packet_size) - n = wsi->protocol->tx_packet_size; - else { - n = wsi->protocol->rx_buffer_size; - if (!n) - n = context->pt_serv_buf_size; - } - n += LWS_PRE + 4; - if (n > len) - n = len; -#if defined(LWS_WITH_ESP8266) - if (wsi->pending_send_completion) { - n = 0; - goto handle_truncated_send; - } -#endif - - /* nope, send it on the socket directly */ - lws_latency_pre(context, wsi); - n = lws_ssl_capable_write(wsi, buf, n); - lws_latency(context, wsi, "send lws_issue_raw", n, n == len); - - switch (n) { - case LWS_SSL_CAPABLE_ERROR: - /* we're going to close, let close know sends aren't possible */ - wsi->socket_is_permanently_unusable = 1; - return -1; - case LWS_SSL_CAPABLE_MORE_SERVICE: - /* nothing got sent, not fatal, retry the whole thing later */ - n = 0; - break; - } - -handle_truncated_send: - /* - * we were already handling a truncated send? - */ - if (wsi->trunc_len) { - lwsl_info("%p partial adv %d (vs %ld)\n", wsi, n, (long)real_len); - wsi->trunc_offset += n; - wsi->trunc_len -= n; - - if (!wsi->trunc_len) { - lwsl_info("***** %p partial send completed\n", wsi); - /* done with it, but don't free it */ - n = real_len; - if (wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE) { - lwsl_info("***** %p signalling to close now\n", wsi); - return -1; /* retry closing now */ - } - } - /* always callback on writeable */ - lws_callback_on_writable(wsi); - - return n; - } - - if ((unsigned int)n == real_len) - /* what we just sent went out cleanly */ - return n; - - /* - * Newly truncated send. Buffer the remainder (it will get - * first priority next time the socket is writable) - */ - lwsl_debug("%p new partial sent %d from %lu total\n", wsi, n, - (unsigned long)real_len); - - lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_WRITE_PARTIALS, 1); - lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_B_PARTIALS_ACCEPTED_PARTS, n); - - /* - * - if we still have a suitable malloc lying around, use it - * - or, if too small, reallocate it - * - or, if no buffer, create it - */ - if (!wsi->trunc_alloc || real_len - n > wsi->trunc_alloc_len) { - lws_free(wsi->trunc_alloc); - - wsi->trunc_alloc_len = real_len - n; - wsi->trunc_alloc = lws_malloc(real_len - n, "truncated send alloc"); - if (!wsi->trunc_alloc) { - lwsl_err("truncated send: unable to malloc %lu\n", - (unsigned long)(real_len - n)); - return -1; - } - } - wsi->trunc_offset = 0; - wsi->trunc_len = real_len - n; - memcpy(wsi->trunc_alloc, buf + n, real_len - n); - - /* since something buffered, force it to get another chance to send */ - lws_callback_on_writable(wsi); - - return real_len; -} - -LWS_VISIBLE int lws_write(struct lws *wsi, unsigned char *buf, size_t len, - enum lws_write_protocol wp) -{ - struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi]; - int masked7 = (wsi->mode == LWSCM_WS_CLIENT); - unsigned char is_masked_bit = 0; - unsigned char *dropmask = NULL; - struct lws_tokens eff_buf; - size_t orig_len = len; - int pre = 0, n; - - if (wsi->parent_carries_io) { - struct lws_write_passthru pas; - - pas.buf = buf; - pas.len = len; - pas.wp = wp; - pas.wsi = wsi; - - if (wsi->parent->protocol->callback(wsi->parent, - LWS_CALLBACK_CHILD_WRITE_VIA_PARENT, - wsi->parent->user_space, - (void *)&pas, 0)) - return 1; - - return len; - } - - lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_API_LWS_WRITE, 1); - - if ((int)len < 0) { - lwsl_err("%s: suspicious len int %d, ulong %lu\n", __func__, - (int)len, (unsigned long)len); - return -1; - } - - lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_B_WRITE, len); - -#ifdef LWS_WITH_ACCESS_LOG - wsi->access_log.sent += len; -#endif - if (wsi->vhost) - wsi->vhost->conn_stats.tx += len; - - if (wsi->state == LWSS_ESTABLISHED && wsi->u.ws.tx_draining_ext) { - /* remove us from the list */ - struct lws **w = &pt->tx_draining_ext_list; - - wsi->u.ws.tx_draining_ext = 0; - /* remove us from context draining ext list */ - while (*w) { - if (*w == wsi) { - *w = wsi->u.ws.tx_draining_ext_list; - break; - } - w = &((*w)->u.ws.tx_draining_ext_list); - } - wsi->u.ws.tx_draining_ext_list = NULL; - wp = (wsi->u.ws.tx_draining_stashed_wp & 0xc0) | - LWS_WRITE_CONTINUATION; - - lwsl_ext("FORCED draining wp to 0x%02X\n", wp); - } - - lws_restart_ws_ping_pong_timer(wsi); - - if ((wp & 0x1f) == LWS_WRITE_HTTP || - (wp & 0x1f) == LWS_WRITE_HTTP_FINAL || - (wp & 0x1f) == LWS_WRITE_HTTP_HEADERS_CONTINUATION || - (wp & 0x1f) == LWS_WRITE_HTTP_HEADERS) - goto send_raw; - - /* if not in a state to send stuff, then just send nothing */ - - if (wsi->state != LWSS_ESTABLISHED && - ((wsi->state != LWSS_RETURNED_CLOSE_ALREADY && - wsi->state != LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION && - wsi->state != LWSS_AWAITING_CLOSE_ACK) || - wp != LWS_WRITE_CLOSE)) { - lwsl_debug("binning\n"); - return 0; - } - - /* if we are continuing a frame that already had its header done */ - - if (wsi->u.ws.inside_frame) { - lwsl_debug("INSIDE FRAME\n"); - goto do_more_inside_frame; - } - - wsi->u.ws.clean_buffer = 1; - - /* - * give a chance to the extensions to modify payload - * the extension may decide to produce unlimited payload erratically - * (eg, compression extension), so we require only that if he produces - * something, it will be a complete fragment of the length known at - * the time (just the fragment length known), and if he has - * more we will come back next time he is writeable and allow him to - * produce more fragments until he's drained. - * - * This allows what is sent each time it is writeable to be limited to - * a size that can be sent without partial sends or blocking, allows - * interleaving of control frames and other connection service. - */ - eff_buf.token = (char *)buf; - eff_buf.token_len = len; - - switch ((int)wp) { - case LWS_WRITE_PING: - case LWS_WRITE_PONG: - case LWS_WRITE_CLOSE: - break; - default: - lwsl_debug("LWS_EXT_CB_PAYLOAD_TX\n"); - n = lws_ext_cb_active(wsi, LWS_EXT_CB_PAYLOAD_TX, &eff_buf, wp); - if (n < 0) - return -1; - - if (n && eff_buf.token_len) { - lwsl_debug("drain len %d\n", (int)eff_buf.token_len); - /* extension requires further draining */ - wsi->u.ws.tx_draining_ext = 1; - wsi->u.ws.tx_draining_ext_list = pt->tx_draining_ext_list; - pt->tx_draining_ext_list = wsi; - /* we must come back to do more */ - lws_callback_on_writable(wsi); - /* - * keep a copy of the write type for the overall - * action that has provoked generation of these - * fragments, so the last guy can use its FIN state. - */ - wsi->u.ws.tx_draining_stashed_wp = wp; - /* this is definitely not actually the last fragment - * because the extension asserted he has more coming - * So make sure this intermediate one doesn't go out - * with a FIN. - */ - wp |= LWS_WRITE_NO_FIN; - } - - if (eff_buf.token_len && wsi->u.ws.stashed_write_pending) { - wsi->u.ws.stashed_write_pending = 0; - wp = (wp &0xc0) | (int)wsi->u.ws.stashed_write_type; - } - } - - /* - * an extension did something we need to keep... for example, if - * compression extension, it has already updated its state according - * to this being issued - */ - if ((char *)buf != eff_buf.token) { - /* - * ext might eat it, but not have anything to issue yet. - * In that case we have to follow his lead, but stash and - * replace the write type that was lost here the first time. - */ - if (len && !eff_buf.token_len) { - if (!wsi->u.ws.stashed_write_pending) - wsi->u.ws.stashed_write_type = (char)wp & 0x3f; - wsi->u.ws.stashed_write_pending = 1; - return len; - } - /* - * extension recreated it: - * need to buffer this if not all sent - */ - wsi->u.ws.clean_buffer = 0; - } - - buf = (unsigned char *)eff_buf.token; - len = eff_buf.token_len; - - if (!buf) { - lwsl_err("null buf (%d)\n", (int)len); - return -1; - } - - switch (wsi->ietf_spec_revision) { - case 13: - if (masked7) { - pre += 4; - dropmask = &buf[0 - pre]; - is_masked_bit = 0x80; - } - - switch (wp & 0xf) { - case LWS_WRITE_TEXT: - n = LWSWSOPC_TEXT_FRAME; - break; - case LWS_WRITE_BINARY: - n = LWSWSOPC_BINARY_FRAME; - break; - case LWS_WRITE_CONTINUATION: - n = LWSWSOPC_CONTINUATION; - break; - - case LWS_WRITE_CLOSE: - n = LWSWSOPC_CLOSE; - break; - case LWS_WRITE_PING: - n = LWSWSOPC_PING; - break; - case LWS_WRITE_PONG: - n = LWSWSOPC_PONG; - break; - default: - lwsl_warn("lws_write: unknown write opc / wp\n"); - return -1; - } - - if (!(wp & LWS_WRITE_NO_FIN)) - n |= 1 << 7; - - if (len < 126) { - pre += 2; - buf[-pre] = n; - buf[-pre + 1] = (unsigned char)(len | is_masked_bit); - } else { - if (len < 65536) { - pre += 4; - buf[-pre] = n; - buf[-pre + 1] = 126 | is_masked_bit; - buf[-pre + 2] = (unsigned char)(len >> 8); - buf[-pre + 3] = (unsigned char)len; - } else { - pre += 10; - buf[-pre] = n; - buf[-pre + 1] = 127 | is_masked_bit; -#if defined __LP64__ - buf[-pre + 2] = (len >> 56) & 0x7f; - buf[-pre + 3] = len >> 48; - buf[-pre + 4] = len >> 40; - buf[-pre + 5] = len >> 32; -#else - buf[-pre + 2] = 0; - buf[-pre + 3] = 0; - buf[-pre + 4] = 0; - buf[-pre + 5] = 0; -#endif - buf[-pre + 6] = (unsigned char)(len >> 24); - buf[-pre + 7] = (unsigned char)(len >> 16); - buf[-pre + 8] = (unsigned char)(len >> 8); - buf[-pre + 9] = (unsigned char)len; - } - } - break; - } - -do_more_inside_frame: - - /* - * Deal with masking if we are in client -> server direction and - * the wp demands it - */ - - if (masked7) { - if (!wsi->u.ws.inside_frame) - if (lws_0405_frame_mask_generate(wsi)) { - lwsl_err("frame mask generation failed\n"); - return -1; - } - - /* - * in v7, just mask the payload - */ - if (dropmask) { /* never set if already inside frame */ - for (n = 4; n < (int)len + 4; n++) - dropmask[n] = dropmask[n] ^ wsi->u.ws.mask[ - (wsi->u.ws.mask_idx++) & 3]; - - /* copy the frame nonce into place */ - memcpy(dropmask, wsi->u.ws.mask, 4); - } - } - -send_raw: - switch ((int)(wp & 0x1f)) { - case LWS_WRITE_CLOSE: -/* lwsl_hexdump(&buf[-pre], len); */ - case LWS_WRITE_HTTP: - case LWS_WRITE_HTTP_FINAL: - case LWS_WRITE_HTTP_HEADERS: - case LWS_WRITE_HTTP_HEADERS_CONTINUATION: - case LWS_WRITE_PONG: - case LWS_WRITE_PING: -#ifdef LWS_WITH_HTTP2 - if (wsi->mode == LWSCM_HTTP2_SERVING) { - unsigned char flags = 0; - - n = LWS_H2_FRAME_TYPE_DATA; - if ((wp & 0x1f) == LWS_WRITE_HTTP_HEADERS) { - n = LWS_H2_FRAME_TYPE_HEADERS; - if (!(wp & LWS_WRITE_NO_FIN)) - flags = LWS_H2_FLAG_END_HEADERS; - if (wsi->u.h2.send_END_STREAM || (wp & LWS_WRITE_H2_STREAM_END)) { - flags |= LWS_H2_FLAG_END_STREAM; - wsi->u.h2.send_END_STREAM = 1; - } - } - - if ((wp & 0x1f) == LWS_WRITE_HTTP_HEADERS_CONTINUATION) { - n = LWS_H2_FRAME_TYPE_CONTINUATION; - if (!(wp & LWS_WRITE_NO_FIN)) - flags = LWS_H2_FLAG_END_HEADERS; - if (wsi->u.h2.send_END_STREAM || (wp & LWS_WRITE_H2_STREAM_END)) { - flags |= LWS_H2_FLAG_END_STREAM; - wsi->u.h2.send_END_STREAM = 1; - } - } - - if (((wp & 0x1f) == LWS_WRITE_HTTP || - (wp & 0x1f) == LWS_WRITE_HTTP_FINAL) && - wsi->u.http.tx_content_length) { - wsi->u.http.tx_content_remain -= len; - lwsl_info("%s: wsi %p: tx_content_remain = %llu\n", __func__, wsi, - (unsigned long long)wsi->u.http.tx_content_remain); - if (!wsi->u.http.tx_content_remain) { - lwsl_info("%s: selecting final write mode\n", __func__); - wp = LWS_WRITE_HTTP_FINAL; - } - } - - if ((wp & 0x1f) == LWS_WRITE_HTTP_FINAL || (wp & LWS_WRITE_H2_STREAM_END)) { - //lws_get_network_wsi(wsi)->u.h2.END_STREAM) { - lwsl_info("%s: setting END_STREAM\n", __func__); - flags |= LWS_H2_FLAG_END_STREAM; - wsi->u.h2.send_END_STREAM = 1; - } - - return lws_h2_frame_write(wsi, n, flags, - wsi->u.h2.my_sid, len, buf); - } -#endif - return lws_issue_raw(wsi, (unsigned char *)buf - pre, len + pre); - default: - break; - } - - /* - * give any active extensions a chance to munge the buffer - * before send. We pass in a pointer to an lws_tokens struct - * prepared with the default buffer and content length that's in - * there. Rather than rewrite the default buffer, extensions - * that expect to grow the buffer can adapt .token to - * point to their own per-connection buffer in the extension - * user allocation. By default with no extensions or no - * extension callback handling, just the normal input buffer is - * used then so it is efficient. - * - * callback returns 1 in case it wants to spill more buffers - * - * This takes care of holding the buffer if send is incomplete, ie, - * if wsi->u.ws.clean_buffer is 0 (meaning an extension meddled with - * the buffer). If wsi->u.ws.clean_buffer is 1, it will instead - * return to the user code how much OF THE USER BUFFER was consumed. - */ - - n = lws_issue_raw_ext_access(wsi, buf - pre, len + pre); - wsi->u.ws.inside_frame = 1; - if (n <= 0) - return n; - - if (n == (int)len + pre) { - /* everything in the buffer was handled (or rebuffered...) */ - wsi->u.ws.inside_frame = 0; - return orig_len; - } - - /* - * it is how many bytes of user buffer got sent... may be < orig_len - * in which case callback when writable has already been arranged - * and user code can call lws_write() again with the rest - * later. - */ - - return n - pre; -} - -LWS_VISIBLE int lws_serve_http_file_fragment(struct lws *wsi) -{ - struct lws_context *context = wsi->context; - struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi]; - struct lws_process_html_args args; - lws_filepos_t amount, poss; - unsigned char *p, *pstart; -#if defined(LWS_WITH_RANGES) - unsigned char finished = 0; -#endif - int n, m; - - lwsl_debug("wsi->http2_substream %d\n", wsi->http2_substream); - - while (!lws_send_pipe_choked(wsi)) { - - if (wsi->trunc_len) { - if (lws_issue_raw(wsi, wsi->trunc_alloc + - wsi->trunc_offset, - wsi->trunc_len) < 0) { - lwsl_info("%s: closing\n", __func__); - goto file_had_it; - } - continue; - } - - if (wsi->u.http.filepos == wsi->u.http.filelen) - goto all_sent; - - n = 0; - - pstart = pt->serv_buf + LWS_H2_FRAME_HEADER_LENGTH; - - p = pstart; - -#if defined(LWS_WITH_RANGES) - if (wsi->u.http.range.count_ranges && !wsi->u.http.range.inside) { - - lwsl_notice("%s: doing range start %llu\n", __func__, wsi->u.http.range.start); - - if ((long long)lws_vfs_file_seek_cur(wsi->u.http.fop_fd, - wsi->u.http.range.start - - wsi->u.http.filepos) < 0) - goto file_had_it; - - wsi->u.http.filepos = wsi->u.http.range.start; - - if (wsi->u.http.range.count_ranges > 1) { - n = lws_snprintf((char *)p, context->pt_serv_buf_size - LWS_H2_FRAME_HEADER_LENGTH, - "_lws\x0d\x0a" - "Content-Type: %s\x0d\x0a" - "Content-Range: bytes %llu-%llu/%llu\x0d\x0a" - "\x0d\x0a", - wsi->u.http.multipart_content_type, - wsi->u.http.range.start, - wsi->u.http.range.end, - wsi->u.http.range.extent); - p += n; - } - - wsi->u.http.range.budget = wsi->u.http.range.end - - wsi->u.http.range.start + 1; - wsi->u.http.range.inside = 1; - } -#endif - - poss = context->pt_serv_buf_size - n - LWS_H2_FRAME_HEADER_LENGTH; - - if (poss > wsi->u.http.tx_content_remain) - poss = wsi->u.http.tx_content_remain; - - /* - * if there is a hint about how much we will do well to send at one time, - * restrict ourselves to only trying to send that. - */ - if (wsi->protocol->tx_packet_size && - poss > wsi->protocol->tx_packet_size) - poss = wsi->protocol->tx_packet_size; - -#if defined(LWS_WITH_HTTP2) - m = lws_h2_tx_cr_get(wsi); - if (!m) { - lwsl_info("%s: came here with no tx credit", __func__); - return 0; - } - if (m < poss) - poss = m; - /* - * consumption of the actual payload amount sent will be handled - * when the http2 data frame is sent - */ -#endif - -#if defined(LWS_WITH_RANGES) - if (wsi->u.http.range.count_ranges) { - if (wsi->u.http.range.count_ranges > 1) - poss -= 7; /* allow for final boundary */ - if (poss > wsi->u.http.range.budget) - poss = wsi->u.http.range.budget; - } -#endif - if (wsi->sending_chunked) { - /* we need to drop the chunk size in here */ - p += 10; - /* allow for the chunk to grow by 128 in translation */ - poss -= 10 + 128; - } - - if (lws_vfs_file_read(wsi->u.http.fop_fd, &amount, p, poss) < 0) - goto file_had_it; /* caller will close */ - - if (wsi->sending_chunked) - n = (int)amount; - else - n = (p - pstart) + (int)amount; - - lwsl_debug("%s: sending %d\n", __func__, n); - - if (n) { - lws_set_timeout(wsi, PENDING_TIMEOUT_HTTP_CONTENT, - context->timeout_secs); - - if (wsi->sending_chunked) { - args.p = (char *)p; - args.len = n; - args.max_len = (unsigned int)poss + 128; - args.final = wsi->u.http.filepos + n == - wsi->u.http.filelen; - if (user_callback_handle_rxflow( - wsi->vhost->protocols[(int)wsi->protocol_interpret_idx].callback, wsi, - LWS_CALLBACK_PROCESS_HTML, - wsi->user_space, &args, 0) < 0) - goto file_had_it; - n = args.len; - p = (unsigned char *)args.p; - } else - p = pstart; - -#if defined(LWS_WITH_RANGES) - if (wsi->u.http.range.send_ctr + 1 == - wsi->u.http.range.count_ranges && // last range - wsi->u.http.range.count_ranges > 1 && // was 2+ ranges (ie, multipart) - wsi->u.http.range.budget - amount == 0) {// final part - n += lws_snprintf((char *)pstart + n, 6, - "_lws\x0d\x0a"); // append trailing boundary - lwsl_debug("added trailing boundary\n"); - } -#endif - m = lws_write(wsi, p, n, - wsi->u.http.filepos == wsi->u.http.filelen ? - LWS_WRITE_HTTP_FINAL : - LWS_WRITE_HTTP - ); - if (m < 0) - goto file_had_it; - - wsi->u.http.filepos += amount; - -#if defined(LWS_WITH_RANGES) - if (wsi->u.http.range.count_ranges >= 1) { - wsi->u.http.range.budget -= amount; - if (wsi->u.http.range.budget == 0) { - lwsl_notice("range budget exhausted\n"); - wsi->u.http.range.inside = 0; - wsi->u.http.range.send_ctr++; - - if (lws_ranges_next(&wsi->u.http.range) < 1) { - finished = 1; - goto all_sent; - } - } - } -#endif - - if (m != n) { - /* adjust for what was not sent */ - if (lws_vfs_file_seek_cur(wsi->u.http.fop_fd, - m - n) == - (unsigned long)-1) - goto file_had_it; - } - } - -all_sent: - if ((!wsi->trunc_len && wsi->u.http.filepos >= wsi->u.http.filelen) -#if defined(LWS_WITH_RANGES) - || finished) -#else - ) -#endif - { - wsi->state = LWSS_HTTP; - /* we might be in keepalive, so close it off here */ - lws_vfs_file_close(&wsi->u.http.fop_fd); - - lwsl_debug("file completed\n"); - - if (wsi->protocol->callback && - user_callback_handle_rxflow(wsi->protocol->callback, - wsi, LWS_CALLBACK_HTTP_FILE_COMPLETION, - wsi->user_space, NULL, - 0) < 0) { - /* - * For http/1.x, the choices from - * transaction_completed are either - * 0 to use the connection for pipelined - * or nonzero to hang it up. - * - * However for http/2. while we are - * still interested in hanging up the - * nwsi if there was a network-level - * fatal error, simply completing the - * transaction is a matter of the stream - * state, not the root connection at the - * network level - */ - if (wsi->http2_substream) - return 1; - else - return -1; - } - - return 1; /* >0 indicates completed */ - } - } - - lws_callback_on_writable(wsi); - - return 0; /* indicates further processing must be done */ - -file_had_it: - lws_vfs_file_close(&wsi->u.http.fop_fd); - - return -1; -} - -#if LWS_POSIX -LWS_VISIBLE int -lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len) -{ - struct lws_context *context = wsi->context; - struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi]; - int n; - - lws_stats_atomic_bump(context, pt, LWSSTATS_C_API_READ, 1); - - n = recv(wsi->desc.sockfd, (char *)buf, len, 0); - if (n >= 0) { - if (wsi->vhost) - wsi->vhost->conn_stats.rx += n; - lws_stats_atomic_bump(context, pt, LWSSTATS_B_READ, n); - lws_restart_ws_ping_pong_timer(wsi); - return n; - } -#if LWS_POSIX - if (LWS_ERRNO == LWS_EAGAIN || - LWS_ERRNO == LWS_EWOULDBLOCK || - LWS_ERRNO == LWS_EINTR) - return LWS_SSL_CAPABLE_MORE_SERVICE; -#endif - lwsl_notice("error on reading from skt : %d\n", LWS_ERRNO); - return LWS_SSL_CAPABLE_ERROR; -} - -LWS_VISIBLE int -lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len) -{ - int n = 0; - -#if LWS_POSIX - n = send(wsi->desc.sockfd, (char *)buf, len, MSG_NOSIGNAL); -// lwsl_info("%s: sent len %d result %d", __func__, len, n); - if (n >= 0) - return n; - - if (LWS_ERRNO == LWS_EAGAIN || - LWS_ERRNO == LWS_EWOULDBLOCK || - LWS_ERRNO == LWS_EINTR) { - if (LWS_ERRNO == LWS_EWOULDBLOCK) { - lws_set_blocking_send(wsi); - } - - return LWS_SSL_CAPABLE_MORE_SERVICE; - } -#else - (void)n; - (void)wsi; - (void)buf; - (void)len; - // !!! -#endif - - lwsl_debug("ERROR writing len %d to skt fd %d err %d / errno %d\n", - len, wsi->desc.sockfd, n, LWS_ERRNO); - return LWS_SSL_CAPABLE_ERROR; -} -#endif -LWS_VISIBLE int -lws_ssl_pending_no_ssl(struct lws *wsi) -{ - (void)wsi; -#if defined(LWS_WITH_ESP32) - return 100; -#else - return 0; -#endif -} |