| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. |
| * |
| * This software is licensed as described in the file COPYING, which |
| * you should have received as part of this distribution. The terms |
| * are also available at https://curl.se/docs/copyright.html. |
| * |
| * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
| * copies of the Software, and permit persons to whom the Software is |
| * furnished to do so, under the terms of the COPYING file. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| * SPDX-License-Identifier: curl |
| * |
| ***************************************************************************/ |
| |
| #include "curl_setup.h" |
| |
| #ifdef USE_QUICHE |
| #include <quiche.h> |
| #include <openssl/err.h> |
| #include <openssl/ssl.h> |
| #include "bufq.h" |
| #include "urldata.h" |
| #include "cfilters.h" |
| #include "cf-socket.h" |
| #include "sendf.h" |
| #include "strdup.h" |
| #include "rand.h" |
| #include "strcase.h" |
| #include "multiif.h" |
| #include "connect.h" |
| #include "progress.h" |
| #include "strerror.h" |
| #include "http1.h" |
| #include "vquic.h" |
| #include "vquic_int.h" |
| #include "curl_quiche.h" |
| #include "transfer.h" |
| #include "vtls/openssl.h" |
| #include "vtls/keylog.h" |
| |
| /* The last 3 #include files should be in this order */ |
| #include "curl_printf.h" |
| #include "curl_memory.h" |
| #include "memdebug.h" |
| |
| /* #define DEBUG_QUICHE */ |
| |
| #define QUIC_MAX_STREAMS (100) |
| #define QUIC_IDLE_TIMEOUT (5 * 1000) /* milliseconds */ |
| |
| #define H3_STREAM_WINDOW_SIZE (128 * 1024) |
| #define H3_STREAM_CHUNK_SIZE (16 * 1024) |
| /* The pool keeps spares around and half of a full stream windows |
| * seems good. More does not seem to improve performance. |
| * The benefit of the pool is that stream buffer to not keep |
| * spares. So memory consumption goes down when streams run empty, |
| * have a large upload done, etc. */ |
| #define H3_STREAM_POOL_SPARES \ |
| (H3_STREAM_WINDOW_SIZE / H3_STREAM_CHUNK_SIZE ) / 2 |
| /* Receive and Send max number of chunks just follows from the |
| * chunk size and window size */ |
| #define H3_STREAM_RECV_CHUNKS \ |
| (H3_STREAM_WINDOW_SIZE / H3_STREAM_CHUNK_SIZE) |
| #define H3_STREAM_SEND_CHUNKS \ |
| (H3_STREAM_WINDOW_SIZE / H3_STREAM_CHUNK_SIZE) |
| |
| /* |
| * Store quiche version info in this buffer. |
| */ |
| void Curl_quiche_ver(char *p, size_t len) |
| { |
| (void)msnprintf(p, len, "quiche/%s", quiche_version()); |
| } |
| |
| static void keylog_callback(const SSL *ssl, const char *line) |
| { |
| (void)ssl; |
| Curl_tls_keylog_write_line(line); |
| } |
| |
| static SSL_CTX *quic_ssl_ctx(struct Curl_easy *data) |
| { |
| SSL_CTX *ssl_ctx = SSL_CTX_new(TLS_method()); |
| |
| SSL_CTX_set_alpn_protos(ssl_ctx, |
| (const uint8_t *)QUICHE_H3_APPLICATION_PROTOCOL, |
| sizeof(QUICHE_H3_APPLICATION_PROTOCOL) - 1); |
| |
| SSL_CTX_set_default_verify_paths(ssl_ctx); |
| |
| /* Open the file if a TLS or QUIC backend has not done this before. */ |
| Curl_tls_keylog_open(); |
| if(Curl_tls_keylog_enabled()) { |
| SSL_CTX_set_keylog_callback(ssl_ctx, keylog_callback); |
| } |
| |
| { |
| struct connectdata *conn = data->conn; |
| if(conn->ssl_config.verifypeer) { |
| const char * const ssl_cafile = conn->ssl_config.CAfile; |
| const char * const ssl_capath = conn->ssl_config.CApath; |
| if(ssl_cafile || ssl_capath) { |
| SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_PEER, NULL); |
| /* tell OpenSSL where to find CA certificates that are used to verify |
| the server's certificate. */ |
| if(!SSL_CTX_load_verify_locations(ssl_ctx, ssl_cafile, ssl_capath)) { |
| /* Fail if we insist on successfully verifying the server. */ |
| failf(data, "error setting certificate verify locations:" |
| " CAfile: %s CApath: %s", |
| ssl_cafile ? ssl_cafile : "none", |
| ssl_capath ? ssl_capath : "none"); |
| return NULL; |
| } |
| infof(data, " CAfile: %s", ssl_cafile ? ssl_cafile : "none"); |
| infof(data, " CApath: %s", ssl_capath ? ssl_capath : "none"); |
| } |
| #ifdef CURL_CA_FALLBACK |
| else { |
| /* verifying the peer without any CA certificates won't work so |
| use openssl's built-in default as fallback */ |
| SSL_CTX_set_default_verify_paths(ssl_ctx); |
| } |
| #endif |
| } |
| } |
| return ssl_ctx; |
| } |
| |
| struct cf_quiche_ctx { |
| struct cf_quic_ctx q; |
| quiche_conn *qconn; |
| quiche_config *cfg; |
| quiche_h3_conn *h3c; |
| quiche_h3_config *h3config; |
| uint8_t scid[QUICHE_MAX_CONN_ID_LEN]; |
| SSL_CTX *sslctx; |
| SSL *ssl; |
| struct curltime started_at; /* time the current attempt started */ |
| struct curltime handshake_at; /* time connect handshake finished */ |
| struct curltime first_byte_at; /* when first byte was recvd */ |
| struct curltime reconnect_at; /* time the next attempt should start */ |
| struct bufc_pool stream_bufcp; /* chunk pool for streams */ |
| curl_off_t data_recvd; |
| size_t sends_on_hold; /* # of streams with SEND_HOLD set */ |
| BIT(goaway); /* got GOAWAY from server */ |
| BIT(got_first_byte); /* if first byte was received */ |
| }; |
| |
| #ifdef DEBUG_QUICHE |
| static void quiche_debug_log(const char *line, void *argp) |
| { |
| (void)argp; |
| fprintf(stderr, "%s\n", line); |
| } |
| #endif |
| |
| static void cf_quiche_ctx_clear(struct cf_quiche_ctx *ctx) |
| { |
| if(ctx) { |
| vquic_ctx_free(&ctx->q); |
| if(ctx->qconn) |
| quiche_conn_free(ctx->qconn); |
| if(ctx->h3config) |
| quiche_h3_config_free(ctx->h3config); |
| if(ctx->h3c) |
| quiche_h3_conn_free(ctx->h3c); |
| if(ctx->cfg) |
| quiche_config_free(ctx->cfg); |
| Curl_bufcp_free(&ctx->stream_bufcp); |
| memset(ctx, 0, sizeof(*ctx)); |
| } |
| } |
| |
| /** |
| * All about the H3 internals of a stream |
| */ |
| struct stream_ctx { |
| int64_t id; /* HTTP/3 protocol stream identifier */ |
| struct bufq recvbuf; /* h3 response */ |
| uint64_t error3; /* HTTP/3 stream error code */ |
| curl_off_t upload_left; /* number of request bytes left to upload */ |
| bool closed; /* TRUE on stream close */ |
| bool reset; /* TRUE on stream reset */ |
| bool send_closed; /* stream is locally closed */ |
| bool resp_hds_complete; /* complete, final response has been received */ |
| bool resp_got_header; /* TRUE when h3 stream has recvd some HEADER */ |
| }; |
| |
| #define H3_STREAM_CTX(d) ((struct stream_ctx *)(((d) && (d)->req.p.http)? \ |
| ((struct HTTP *)(d)->req.p.http)->h3_ctx \ |
| : NULL)) |
| #define H3_STREAM_LCTX(d) ((struct HTTP *)(d)->req.p.http)->h3_ctx |
| #define H3_STREAM_ID(d) (H3_STREAM_CTX(d)? \ |
| H3_STREAM_CTX(d)->id : -2) |
| |
| static bool stream_send_is_suspended(struct Curl_easy *data) |
| { |
| return (data->req.keepon & KEEP_SEND_HOLD); |
| } |
| |
| static void stream_send_suspend(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| |
| if((data->req.keepon & KEEP_SENDBITS) == KEEP_SEND) { |
| data->req.keepon |= KEEP_SEND_HOLD; |
| ++ctx->sends_on_hold; |
| if(H3_STREAM_ID(data) >= 0) |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] suspend sending", |
| H3_STREAM_ID(data))); |
| else |
| DEBUGF(LOG_CF(data, cf, "[%s] suspend sending", |
| data->state.url)); |
| } |
| } |
| |
| static void stream_send_resume(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| |
| if(stream_send_is_suspended(data)) { |
| data->req.keepon &= ~KEEP_SEND_HOLD; |
| --ctx->sends_on_hold; |
| if(H3_STREAM_ID(data) >= 0) |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] resume sending", |
| H3_STREAM_ID(data))); |
| else |
| DEBUGF(LOG_CF(data, cf, "[%s] resume sending", |
| data->state.url)); |
| Curl_expire(data, 0, EXPIRE_RUN_NOW); |
| } |
| } |
| |
| static void check_resumes(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct Curl_easy *sdata; |
| |
| if(ctx->sends_on_hold) { |
| DEBUGASSERT(data->multi); |
| for(sdata = data->multi->easyp; |
| sdata && ctx->sends_on_hold; sdata = sdata->next) { |
| if(stream_send_is_suspended(sdata)) { |
| stream_send_resume(cf, sdata); |
| } |
| } |
| } |
| } |
| |
| static CURLcode h3_data_setup(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| |
| if(stream) |
| return CURLE_OK; |
| |
| stream = calloc(1, sizeof(*stream)); |
| if(!stream) |
| return CURLE_OUT_OF_MEMORY; |
| |
| H3_STREAM_LCTX(data) = stream; |
| stream->id = -1; |
| Curl_bufq_initp(&stream->recvbuf, &ctx->stream_bufcp, |
| H3_STREAM_RECV_CHUNKS, BUFQ_OPT_SOFT_LIMIT); |
| DEBUGF(LOG_CF(data, cf, "data setup (easy %p)", (void *)data)); |
| return CURLE_OK; |
| } |
| |
| static void h3_data_done(struct Curl_cfilter *cf, struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| |
| (void)cf; |
| if(stream) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] easy handle is done", |
| stream->id)); |
| if(stream_send_is_suspended(data)) { |
| data->req.keepon &= ~KEEP_SEND_HOLD; |
| --ctx->sends_on_hold; |
| } |
| Curl_bufq_free(&stream->recvbuf); |
| free(stream); |
| H3_STREAM_LCTX(data) = NULL; |
| } |
| } |
| |
| static void drain_stream(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| unsigned char bits; |
| |
| (void)cf; |
| bits = CURL_CSELECT_IN; |
| if(stream && !stream->send_closed && stream->upload_left) |
| bits |= CURL_CSELECT_OUT; |
| if(data->state.dselect_bits != bits) { |
| data->state.dselect_bits = bits; |
| Curl_expire(data, 0, EXPIRE_RUN_NOW); |
| } |
| } |
| |
| static struct Curl_easy *get_stream_easy(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| int64_t stream3_id) |
| { |
| struct Curl_easy *sdata; |
| |
| (void)cf; |
| if(H3_STREAM_ID(data) == stream3_id) { |
| return data; |
| } |
| else { |
| DEBUGASSERT(data->multi); |
| for(sdata = data->multi->easyp; sdata; sdata = sdata->next) { |
| if(H3_STREAM_ID(sdata) == stream3_id) { |
| return sdata; |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| /* |
| * write_resp_raw() copies response data in raw format to the `data`'s |
| * receive buffer. If not enough space is available, it appends to the |
| * `data`'s overflow buffer. |
| */ |
| static CURLcode write_resp_raw(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| const void *mem, size_t memlen) |
| { |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| CURLcode result = CURLE_OK; |
| ssize_t nwritten; |
| |
| (void)cf; |
| if(!stream) |
| return CURLE_RECV_ERROR; |
| nwritten = Curl_bufq_write(&stream->recvbuf, mem, memlen, &result); |
| if(nwritten < 0) |
| return result; |
| |
| if((size_t)nwritten < memlen) { |
| /* This MUST not happen. Our recbuf is dimensioned to hold the |
| * full max_stream_window and then some for this very reason. */ |
| DEBUGASSERT(0); |
| return CURLE_RECV_ERROR; |
| } |
| return result; |
| } |
| |
| struct cb_ctx { |
| struct Curl_cfilter *cf; |
| struct Curl_easy *data; |
| }; |
| |
| static int cb_each_header(uint8_t *name, size_t name_len, |
| uint8_t *value, size_t value_len, |
| void *argp) |
| { |
| struct cb_ctx *x = argp; |
| struct stream_ctx *stream = H3_STREAM_CTX(x->data); |
| CURLcode result; |
| |
| (void)stream; |
| if((name_len == 7) && !strncmp(HTTP_PSEUDO_STATUS, (char *)name, 7)) { |
| result = write_resp_raw(x->cf, x->data, "HTTP/3 ", sizeof("HTTP/3 ") - 1); |
| if(!result) |
| result = write_resp_raw(x->cf, x->data, value, value_len); |
| if(!result) |
| result = write_resp_raw(x->cf, x->data, " \r\n", 3); |
| } |
| else { |
| result = write_resp_raw(x->cf, x->data, name, name_len); |
| if(!result) |
| result = write_resp_raw(x->cf, x->data, ": ", 2); |
| if(!result) |
| result = write_resp_raw(x->cf, x->data, value, value_len); |
| if(!result) |
| result = write_resp_raw(x->cf, x->data, "\r\n", 2); |
| } |
| if(result) { |
| DEBUGF(LOG_CF(x->data, x->cf, |
| "[h3sid=%"PRId64"][HEADERS][%.*s: %.*s] error %d", |
| stream? stream->id : -1, (int)name_len, name, |
| (int)value_len, value, result)); |
| } |
| return result; |
| } |
| |
| static ssize_t stream_resp_read(void *reader_ctx, |
| unsigned char *buf, size_t len, |
| CURLcode *err) |
| { |
| struct cb_ctx *x = reader_ctx; |
| struct cf_quiche_ctx *ctx = x->cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(x->data); |
| ssize_t nread; |
| |
| if(!stream) { |
| *err = CURLE_RECV_ERROR; |
| return -1; |
| } |
| |
| nread = quiche_h3_recv_body(ctx->h3c, ctx->qconn, stream->id, |
| buf, len); |
| if(nread >= 0) { |
| *err = CURLE_OK; |
| return nread; |
| } |
| else if(nread < 0) { |
| *err = CURLE_AGAIN; |
| return -1; |
| } |
| else { |
| *err = stream->resp_got_header? CURLE_PARTIAL_FILE : CURLE_RECV_ERROR; |
| return -1; |
| } |
| } |
| |
| static CURLcode cf_recv_body(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| ssize_t nwritten; |
| struct cb_ctx cb_ctx; |
| CURLcode result = CURLE_OK; |
| |
| if(!stream) |
| return CURLE_RECV_ERROR; |
| |
| if(!stream->resp_hds_complete) { |
| result = write_resp_raw(cf, data, "\r\n", 2); |
| if(result) |
| return result; |
| stream->resp_hds_complete = TRUE; |
| } |
| |
| cb_ctx.cf = cf; |
| cb_ctx.data = data; |
| nwritten = Curl_bufq_slurp(&stream->recvbuf, |
| stream_resp_read, &cb_ctx, &result); |
| |
| if(nwritten < 0 && result != CURLE_AGAIN) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] recv_body error %zd", |
| stream->id, nwritten)); |
| failf(data, "Error %zd in HTTP/3 response body for stream[%"PRId64"]", |
| nwritten, stream->id); |
| stream->closed = TRUE; |
| stream->reset = TRUE; |
| stream->send_closed = TRUE; |
| streamclose(cf->conn, "Reset of stream"); |
| return result; |
| } |
| return CURLE_OK; |
| } |
| |
| #ifdef DEBUGBUILD |
| static const char *cf_ev_name(quiche_h3_event *ev) |
| { |
| switch(quiche_h3_event_type(ev)) { |
| case QUICHE_H3_EVENT_HEADERS: |
| return "HEADERS"; |
| case QUICHE_H3_EVENT_DATA: |
| return "DATA"; |
| case QUICHE_H3_EVENT_RESET: |
| return "RESET"; |
| case QUICHE_H3_EVENT_FINISHED: |
| return "FINISHED"; |
| case QUICHE_H3_EVENT_GOAWAY: |
| return "GOAWAY"; |
| default: |
| return "Unknown"; |
| } |
| } |
| #else |
| #define cf_ev_name(x) "" |
| #endif |
| |
| static CURLcode h3_process_event(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| int64_t stream3_id, |
| quiche_h3_event *ev) |
| { |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| struct cb_ctx cb_ctx; |
| CURLcode result = CURLE_OK; |
| int rc; |
| |
| if(!stream) |
| return CURLE_OK; |
| DEBUGASSERT(stream3_id == stream->id); |
| switch(quiche_h3_event_type(ev)) { |
| case QUICHE_H3_EVENT_HEADERS: |
| stream->resp_got_header = TRUE; |
| cb_ctx.cf = cf; |
| cb_ctx.data = data; |
| rc = quiche_h3_event_for_each_header(ev, cb_each_header, &cb_ctx); |
| if(rc) { |
| failf(data, "Error %d in HTTP/3 response header for stream[%"PRId64"]", |
| rc, stream3_id); |
| return CURLE_RECV_ERROR; |
| } |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"][HEADERS]", stream3_id)); |
| break; |
| |
| case QUICHE_H3_EVENT_DATA: |
| if(!stream->closed) { |
| result = cf_recv_body(cf, data); |
| } |
| break; |
| |
| case QUICHE_H3_EVENT_RESET: |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"][RESET]", stream3_id)); |
| stream->closed = TRUE; |
| stream->reset = TRUE; |
| stream->send_closed = TRUE; |
| streamclose(cf->conn, "Reset of stream"); |
| break; |
| |
| case QUICHE_H3_EVENT_FINISHED: |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"][FINISHED]", stream3_id)); |
| if(!stream->resp_hds_complete) { |
| result = write_resp_raw(cf, data, "\r\n", 2); |
| if(result) |
| return result; |
| stream->resp_hds_complete = TRUE; |
| } |
| stream->closed = TRUE; |
| streamclose(cf->conn, "End of stream"); |
| break; |
| |
| case QUICHE_H3_EVENT_GOAWAY: |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"][GOAWAY]", stream3_id)); |
| break; |
| |
| default: |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] recv, unhandled event %d", |
| stream3_id, quiche_h3_event_type(ev))); |
| break; |
| } |
| return result; |
| } |
| |
| static CURLcode cf_poll_events(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| struct Curl_easy *sdata; |
| quiche_h3_event *ev; |
| CURLcode result; |
| |
| /* Take in the events and distribute them to the transfers. */ |
| while(ctx->h3c) { |
| int64_t stream3_id = quiche_h3_conn_poll(ctx->h3c, ctx->qconn, &ev); |
| if(stream3_id == QUICHE_H3_ERR_DONE) { |
| break; |
| } |
| else if(stream3_id < 0) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] error poll: %"PRId64, |
| stream? stream->id : -1, stream3_id)); |
| return CURLE_HTTP3; |
| } |
| |
| sdata = get_stream_easy(cf, data, stream3_id); |
| if(!sdata) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] discard event %s for " |
| "unknown [h3sid=%"PRId64"]", |
| stream? stream->id : -1, cf_ev_name(ev), |
| stream3_id)); |
| } |
| else { |
| result = h3_process_event(cf, sdata, stream3_id, ev); |
| drain_stream(cf, sdata); |
| if(result) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] error processing event %s " |
| "for [h3sid=%"PRId64"] -> %d", |
| stream? stream->id : -1, cf_ev_name(ev), |
| stream3_id, result)); |
| quiche_h3_event_free(ev); |
| return result; |
| } |
| quiche_h3_event_free(ev); |
| } |
| } |
| return CURLE_OK; |
| } |
| |
| struct recv_ctx { |
| struct Curl_cfilter *cf; |
| struct Curl_easy *data; |
| int pkts; |
| }; |
| |
| static CURLcode recv_pkt(const unsigned char *pkt, size_t pktlen, |
| struct sockaddr_storage *remote_addr, |
| socklen_t remote_addrlen, int ecn, |
| void *userp) |
| { |
| struct recv_ctx *r = userp; |
| struct cf_quiche_ctx *ctx = r->cf->ctx; |
| quiche_recv_info recv_info; |
| ssize_t nread; |
| |
| (void)ecn; |
| ++r->pkts; |
| |
| recv_info.to = (struct sockaddr *)&ctx->q.local_addr; |
| recv_info.to_len = ctx->q.local_addrlen; |
| recv_info.from = (struct sockaddr *)remote_addr; |
| recv_info.from_len = remote_addrlen; |
| |
| nread = quiche_conn_recv(ctx->qconn, (unsigned char *)pkt, pktlen, |
| &recv_info); |
| if(nread < 0) { |
| if(QUICHE_ERR_DONE == nread) { |
| DEBUGF(LOG_CF(r->data, r->cf, "ingress, quiche is DONE")); |
| return CURLE_OK; |
| } |
| else if(QUICHE_ERR_TLS_FAIL == nread) { |
| long verify_ok = SSL_get_verify_result(ctx->ssl); |
| if(verify_ok != X509_V_OK) { |
| failf(r->data, "SSL certificate problem: %s", |
| X509_verify_cert_error_string(verify_ok)); |
| return CURLE_PEER_FAILED_VERIFICATION; |
| } |
| } |
| else { |
| failf(r->data, "quiche_conn_recv() == %zd", nread); |
| return CURLE_RECV_ERROR; |
| } |
| } |
| else if((size_t)nread < pktlen) { |
| DEBUGF(LOG_CF(r->data, r->cf, "ingress, quiche only read %zd/%zd bytes", |
| nread, pktlen)); |
| } |
| |
| return CURLE_OK; |
| } |
| |
| static CURLcode cf_process_ingress(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct recv_ctx rctx; |
| CURLcode result; |
| |
| DEBUGASSERT(ctx->qconn); |
| rctx.cf = cf; |
| rctx.data = data; |
| rctx.pkts = 0; |
| |
| result = vquic_recv_packets(cf, data, &ctx->q, 1000, recv_pkt, &rctx); |
| if(result) |
| return result; |
| |
| if(rctx.pkts > 0) { |
| /* quiche digested ingress packets. It might have opened flow control |
| * windows again. */ |
| check_resumes(cf, data); |
| } |
| return cf_poll_events(cf, data); |
| } |
| |
| struct read_ctx { |
| struct Curl_cfilter *cf; |
| struct Curl_easy *data; |
| quiche_send_info send_info; |
| }; |
| |
| static ssize_t read_pkt_to_send(void *userp, |
| unsigned char *buf, size_t buflen, |
| CURLcode *err) |
| { |
| struct read_ctx *x = userp; |
| struct cf_quiche_ctx *ctx = x->cf->ctx; |
| ssize_t nwritten; |
| |
| nwritten = quiche_conn_send(ctx->qconn, buf, buflen, &x->send_info); |
| if(nwritten == QUICHE_ERR_DONE) { |
| *err = CURLE_AGAIN; |
| return -1; |
| } |
| |
| if(nwritten < 0) { |
| failf(x->data, "quiche_conn_send returned %zd", nwritten); |
| *err = CURLE_SEND_ERROR; |
| return -1; |
| } |
| *err = CURLE_OK; |
| return nwritten; |
| } |
| |
| /* |
| * flush_egress drains the buffers and sends off data. |
| * Calls failf() on errors. |
| */ |
| static CURLcode cf_flush_egress(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| ssize_t nread; |
| CURLcode result; |
| int64_t timeout_ns; |
| struct read_ctx readx; |
| size_t pkt_count, gsolen; |
| |
| result = vquic_flush(cf, data, &ctx->q); |
| if(result) { |
| if(result == CURLE_AGAIN) { |
| Curl_expire(data, 1, EXPIRE_QUIC); |
| return CURLE_OK; |
| } |
| return result; |
| } |
| |
| readx.cf = cf; |
| readx.data = data; |
| memset(&readx.send_info, 0, sizeof(readx.send_info)); |
| pkt_count = 0; |
| gsolen = quiche_conn_max_send_udp_payload_size(ctx->qconn); |
| for(;;) { |
| /* add the next packet to send, if any, to our buffer */ |
| nread = Curl_bufq_sipn(&ctx->q.sendbuf, 0, |
| read_pkt_to_send, &readx, &result); |
| /* DEBUGF(LOG_CF(data, cf, "sip packet(maxlen=%zu) -> %zd, %d", |
| (size_t)0, nread, result)); */ |
| |
| if(nread < 0) { |
| if(result != CURLE_AGAIN) |
| return result; |
| /* Nothing more to add, flush and leave */ |
| result = vquic_send(cf, data, &ctx->q, gsolen); |
| if(result) { |
| if(result == CURLE_AGAIN) { |
| Curl_expire(data, 1, EXPIRE_QUIC); |
| return CURLE_OK; |
| } |
| return result; |
| } |
| goto out; |
| } |
| |
| ++pkt_count; |
| if((size_t)nread < gsolen || pkt_count >= MAX_PKT_BURST) { |
| result = vquic_send(cf, data, &ctx->q, gsolen); |
| if(result) { |
| if(result == CURLE_AGAIN) { |
| Curl_expire(data, 1, EXPIRE_QUIC); |
| return CURLE_OK; |
| } |
| goto out; |
| } |
| pkt_count = 0; |
| } |
| } |
| |
| out: |
| timeout_ns = quiche_conn_timeout_as_nanos(ctx->qconn); |
| if(timeout_ns % 1000000) |
| timeout_ns += 1000000; |
| /* expire resolution is milliseconds */ |
| Curl_expire(data, (timeout_ns / 1000000), EXPIRE_QUIC); |
| return result; |
| } |
| |
| static ssize_t recv_closed_stream(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| CURLcode *err) |
| { |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| ssize_t nread = -1; |
| |
| DEBUGASSERT(stream); |
| if(stream->reset) { |
| failf(data, |
| "HTTP/3 stream %" PRId64 " reset by server", stream->id); |
| *err = stream->resp_got_header? CURLE_PARTIAL_FILE : CURLE_RECV_ERROR; |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] cf_recv, was reset -> %d", |
| stream->id, *err)); |
| } |
| else if(!stream->resp_got_header) { |
| failf(data, |
| "HTTP/3 stream %" PRId64 " was closed cleanly, but before getting" |
| " all response header fields, treated as error", |
| stream->id); |
| /* *err = CURLE_PARTIAL_FILE; */ |
| *err = CURLE_RECV_ERROR; |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] cf_recv, closed incomplete" |
| " -> %d", stream->id, *err)); |
| } |
| else { |
| *err = CURLE_OK; |
| nread = 0; |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] cf_recv, closed ok" |
| " -> %d", stream->id, *err)); |
| } |
| return nread; |
| } |
| |
| static ssize_t cf_quiche_recv(struct Curl_cfilter *cf, struct Curl_easy *data, |
| char *buf, size_t len, CURLcode *err) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| ssize_t nread = -1; |
| CURLcode result; |
| |
| if(!stream) { |
| *err = CURLE_RECV_ERROR; |
| goto out; |
| } |
| |
| if(!Curl_bufq_is_empty(&stream->recvbuf)) { |
| nread = Curl_bufq_read(&stream->recvbuf, |
| (unsigned char *)buf, len, err); |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] read recvbuf(len=%zu) " |
| "-> %zd, %d", stream->id, len, nread, *err)); |
| if(nread < 0) |
| goto out; |
| } |
| |
| if(cf_process_ingress(cf, data)) { |
| DEBUGF(LOG_CF(data, cf, "cf_recv, error on ingress")); |
| *err = CURLE_RECV_ERROR; |
| nread = -1; |
| goto out; |
| } |
| |
| /* recvbuf had nothing before, maybe after progressing ingress? */ |
| if(nread < 0 && !Curl_bufq_is_empty(&stream->recvbuf)) { |
| nread = Curl_bufq_read(&stream->recvbuf, |
| (unsigned char *)buf, len, err); |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] read recvbuf(len=%zu) " |
| "-> %zd, %d", stream->id, len, nread, *err)); |
| if(nread < 0) |
| goto out; |
| } |
| |
| if(nread > 0) { |
| if(stream->closed) |
| drain_stream(cf, data); |
| } |
| else { |
| if(stream->closed) { |
| nread = recv_closed_stream(cf, data, err); |
| goto out; |
| } |
| else if(quiche_conn_is_draining(ctx->qconn)) { |
| failf(data, "QUIC connection is draining"); |
| *err = CURLE_HTTP3; |
| nread = -1; |
| goto out; |
| } |
| *err = CURLE_AGAIN; |
| nread = -1; |
| } |
| |
| out: |
| result = cf_flush_egress(cf, data); |
| if(result) { |
| DEBUGF(LOG_CF(data, cf, "cf_recv, flush egress failed")); |
| *err = result; |
| nread = -1; |
| } |
| if(nread > 0) |
| ctx->data_recvd += nread; |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] cf_recv(total=%zd) -> %zd, %d", |
| stream->id, ctx->data_recvd, nread, *err)); |
| return nread; |
| } |
| |
| /* Index where :authority header field will appear in request header |
| field list. */ |
| #define AUTHORITY_DST_IDX 3 |
| |
| static ssize_t h3_open_stream(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| const void *buf, size_t len, |
| CURLcode *err) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| size_t nheader, i; |
| int64_t stream3_id; |
| struct h1_req_parser h1; |
| struct dynhds h2_headers; |
| quiche_h3_header *nva = NULL; |
| ssize_t nwritten; |
| |
| if(!stream) { |
| *err = h3_data_setup(cf, data); |
| if(*err) { |
| nwritten = -1; |
| goto out; |
| } |
| stream = H3_STREAM_CTX(data); |
| DEBUGASSERT(stream); |
| } |
| |
| Curl_h1_req_parse_init(&h1, H1_PARSE_DEFAULT_MAX_LINE_LEN); |
| Curl_dynhds_init(&h2_headers, 0, DYN_HTTP_REQUEST); |
| |
| DEBUGASSERT(stream); |
| nwritten = Curl_h1_req_parse_read(&h1, buf, len, NULL, 0, err); |
| if(nwritten < 0) |
| goto out; |
| DEBUGASSERT(h1.done); |
| DEBUGASSERT(h1.req); |
| |
| *err = Curl_http_req_to_h2(&h2_headers, h1.req, data); |
| if(*err) { |
| nwritten = -1; |
| goto out; |
| } |
| |
| nheader = Curl_dynhds_count(&h2_headers); |
| nva = malloc(sizeof(quiche_h3_header) * nheader); |
| if(!nva) { |
| *err = CURLE_OUT_OF_MEMORY; |
| nwritten = -1; |
| goto out; |
| } |
| |
| for(i = 0; i < nheader; ++i) { |
| struct dynhds_entry *e = Curl_dynhds_getn(&h2_headers, i); |
| nva[i].name = (unsigned char *)e->name; |
| nva[i].name_len = e->namelen; |
| nva[i].value = (unsigned char *)e->value; |
| nva[i].value_len = e->valuelen; |
| } |
| |
| switch(data->state.httpreq) { |
| case HTTPREQ_POST: |
| case HTTPREQ_POST_FORM: |
| case HTTPREQ_POST_MIME: |
| case HTTPREQ_PUT: |
| if(data->state.infilesize != -1) |
| stream->upload_left = data->state.infilesize; |
| else |
| /* data sending without specifying the data amount up front */ |
| stream->upload_left = -1; /* unknown */ |
| break; |
| default: |
| stream->upload_left = 0; /* no request body */ |
| break; |
| } |
| |
| if(stream->upload_left == 0) |
| stream->send_closed = TRUE; |
| |
| stream3_id = quiche_h3_send_request(ctx->h3c, ctx->qconn, nva, nheader, |
| stream->send_closed); |
| if(stream3_id < 0) { |
| if(QUICHE_H3_ERR_STREAM_BLOCKED == stream3_id) { |
| /* quiche seems to report this error if the connection window is |
| * exhausted. Which happens frequently and intermittent. */ |
| DEBUGF(LOG_CF(data, cf, "send_request(%s) rejected with BLOCKED", |
| data->state.url)); |
| stream_send_suspend(cf, data); |
| *err = CURLE_AGAIN; |
| nwritten = -1; |
| goto out; |
| } |
| else { |
| DEBUGF(LOG_CF(data, cf, "send_request(%s) -> %" PRId64, |
| data->state.url, stream3_id)); |
| } |
| *err = CURLE_SEND_ERROR; |
| nwritten = -1; |
| goto out; |
| } |
| |
| DEBUGASSERT(stream->id == -1); |
| *err = CURLE_OK; |
| stream->id = stream3_id; |
| stream->closed = FALSE; |
| stream->reset = FALSE; |
| |
| infof(data, "Using HTTP/3 Stream ID: %" PRId64 " (easy handle %p)", |
| stream3_id, (void *)data); |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] opened for %s", |
| stream3_id, data->state.url)); |
| |
| out: |
| free(nva); |
| Curl_h1_req_parse_free(&h1); |
| Curl_dynhds_free(&h2_headers); |
| return nwritten; |
| } |
| |
| static ssize_t cf_quiche_send(struct Curl_cfilter *cf, struct Curl_easy *data, |
| const void *buf, size_t len, CURLcode *err) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| CURLcode result; |
| ssize_t nwritten; |
| |
| *err = cf_process_ingress(cf, data); |
| if(*err) { |
| nwritten = -1; |
| goto out; |
| } |
| |
| if(!stream || stream->id < 0) { |
| nwritten = h3_open_stream(cf, data, buf, len, err); |
| if(nwritten < 0) |
| goto out; |
| stream = H3_STREAM_CTX(data); |
| } |
| else { |
| bool eof = (stream->upload_left >= 0 && |
| (curl_off_t)len >= stream->upload_left); |
| nwritten = quiche_h3_send_body(ctx->h3c, ctx->qconn, stream->id, |
| (uint8_t *)buf, len, eof); |
| if(nwritten == QUICHE_H3_ERR_DONE || (nwritten == 0 && len > 0)) { |
| /* TODO: we seem to be blocked on flow control and should HOLD |
| * sending. But when do we open again? */ |
| if(!quiche_conn_stream_writable(ctx->qconn, stream->id, len)) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] send_body(len=%zu) " |
| "-> window exhausted", stream->id, len)); |
| stream_send_suspend(cf, data); |
| } |
| *err = CURLE_AGAIN; |
| nwritten = -1; |
| goto out; |
| } |
| else if(nwritten == QUICHE_H3_TRANSPORT_ERR_FINAL_SIZE) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] send_body(len=%zu) " |
| "-> exceeds size", stream->id, len)); |
| *err = CURLE_SEND_ERROR; |
| nwritten = -1; |
| goto out; |
| } |
| else if(nwritten < 0) { |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] send_body(len=%zu) " |
| "-> quiche err %zd", stream->id, len, nwritten)); |
| *err = CURLE_SEND_ERROR; |
| nwritten = -1; |
| goto out; |
| } |
| else { |
| /* quiche accepted all or at least a part of the buf */ |
| if(stream->upload_left > 0) { |
| stream->upload_left = (nwritten < stream->upload_left)? |
| (stream->upload_left - nwritten) : 0; |
| } |
| if(stream->upload_left == 0) |
| stream->send_closed = TRUE; |
| |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] send body(len=%zu, " |
| "left=%zd) -> %zd", |
| stream->id, len, stream->upload_left, nwritten)); |
| *err = CURLE_OK; |
| } |
| } |
| |
| out: |
| result = cf_flush_egress(cf, data); |
| if(result) { |
| *err = result; |
| nwritten = -1; |
| } |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%" PRId64 "] cf_send(len=%zu) -> %zd, %d", |
| stream? stream->id : -1, len, nwritten, *err)); |
| return nwritten; |
| } |
| |
| static bool stream_is_writeable(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| |
| return stream && |
| quiche_conn_stream_writable(ctx->qconn, (uint64_t)stream->id, 1); |
| } |
| |
| static int cf_quiche_get_select_socks(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| curl_socket_t *socks) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| struct SingleRequest *k = &data->req; |
| int rv = GETSOCK_BLANK; |
| |
| socks[0] = ctx->q.sockfd; |
| |
| /* in an HTTP/3 connection we can basically always get a frame so we should |
| always be ready for one */ |
| rv |= GETSOCK_READSOCK(0); |
| |
| /* we're still uploading or the HTTP/3 layer wants to send data */ |
| if(((k->keepon & KEEP_SENDBITS) == KEEP_SEND) |
| && stream_is_writeable(cf, data)) |
| rv |= GETSOCK_WRITESOCK(0); |
| |
| return rv; |
| } |
| |
| /* |
| * Called from transfer.c:data_pending to know if we should keep looping |
| * to receive more data from the connection. |
| */ |
| static bool cf_quiche_data_pending(struct Curl_cfilter *cf, |
| const struct Curl_easy *data) |
| { |
| const struct stream_ctx *stream = H3_STREAM_CTX(data); |
| (void)cf; |
| return stream && !Curl_bufq_is_empty(&stream->recvbuf); |
| } |
| |
| static CURLcode h3_data_pause(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| bool pause) |
| { |
| /* TODO: there seems right now no API in quiche to shrink/enlarge |
| * the streams windows. As we do in HTTP/2. */ |
| if(!pause) { |
| drain_stream(cf, data); |
| Curl_expire(data, 0, EXPIRE_RUN_NOW); |
| } |
| return CURLE_OK; |
| } |
| |
| static CURLcode cf_quiche_data_event(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| int event, int arg1, void *arg2) |
| { |
| CURLcode result = CURLE_OK; |
| |
| (void)arg1; |
| (void)arg2; |
| switch(event) { |
| case CF_CTRL_DATA_SETUP: { |
| result = h3_data_setup(cf, data); |
| break; |
| } |
| case CF_CTRL_DATA_PAUSE: |
| result = h3_data_pause(cf, data, (arg1 != 0)); |
| break; |
| case CF_CTRL_DATA_DONE: { |
| h3_data_done(cf, data); |
| break; |
| } |
| case CF_CTRL_DATA_DONE_SEND: { |
| struct stream_ctx *stream = H3_STREAM_CTX(data); |
| if(stream && !stream->send_closed) { |
| unsigned char body[1]; |
| ssize_t sent; |
| |
| stream->send_closed = TRUE; |
| stream->upload_left = 0; |
| body[0] = 'X'; |
| sent = cf_quiche_send(cf, data, body, 0, &result); |
| DEBUGF(LOG_CF(data, cf, "[h3sid=%"PRId64"] DONE_SEND -> %zd, %d", |
| stream->id, sent, result)); |
| } |
| break; |
| } |
| case CF_CTRL_DATA_IDLE: |
| result = cf_flush_egress(cf, data); |
| if(result) |
| DEBUGF(LOG_CF(data, cf, "data idle, flush egress -> %d", result)); |
| break; |
| default: |
| break; |
| } |
| return result; |
| } |
| |
| static CURLcode cf_verify_peer(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| CURLcode result = CURLE_OK; |
| |
| cf->conn->bits.multiplex = TRUE; /* at least potentially multiplexed */ |
| cf->conn->httpversion = 30; |
| cf->conn->bundle->multiuse = BUNDLE_MULTIPLEX; |
| |
| if(cf->conn->ssl_config.verifyhost) { |
| X509 *server_cert; |
| server_cert = SSL_get_peer_certificate(ctx->ssl); |
| if(!server_cert) { |
| result = CURLE_PEER_FAILED_VERIFICATION; |
| goto out; |
| } |
| result = Curl_ossl_verifyhost(data, cf->conn, server_cert); |
| X509_free(server_cert); |
| if(result) |
| goto out; |
| } |
| else |
| DEBUGF(LOG_CF(data, cf, "Skipped certificate verification")); |
| |
| ctx->h3config = quiche_h3_config_new(); |
| if(!ctx->h3config) { |
| result = CURLE_OUT_OF_MEMORY; |
| goto out; |
| } |
| |
| /* Create a new HTTP/3 connection on the QUIC connection. */ |
| ctx->h3c = quiche_h3_conn_new_with_transport(ctx->qconn, ctx->h3config); |
| if(!ctx->h3c) { |
| result = CURLE_OUT_OF_MEMORY; |
| goto out; |
| } |
| if(data->set.ssl.certinfo) |
| /* asked to gather certificate info */ |
| (void)Curl_ossl_certchain(data, ctx->ssl); |
| |
| out: |
| if(result) { |
| if(ctx->h3config) { |
| quiche_h3_config_free(ctx->h3config); |
| ctx->h3config = NULL; |
| } |
| if(ctx->h3c) { |
| quiche_h3_conn_free(ctx->h3c); |
| ctx->h3c = NULL; |
| } |
| } |
| return result; |
| } |
| |
| static CURLcode cf_connect_start(struct Curl_cfilter *cf, |
| struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| int rv; |
| CURLcode result; |
| const struct Curl_sockaddr_ex *sockaddr; |
| |
| DEBUGASSERT(ctx->q.sockfd != CURL_SOCKET_BAD); |
| |
| #ifdef DEBUG_QUICHE |
| /* initialize debug log callback only once */ |
| static int debug_log_init = 0; |
| if(!debug_log_init) { |
| quiche_enable_debug_logging(quiche_debug_log, NULL); |
| debug_log_init = 1; |
| } |
| #endif |
| Curl_bufcp_init(&ctx->stream_bufcp, H3_STREAM_CHUNK_SIZE, |
| H3_STREAM_POOL_SPARES); |
| ctx->data_recvd = 0; |
| |
| result = vquic_ctx_init(&ctx->q); |
| if(result) |
| return result; |
| |
| ctx->cfg = quiche_config_new(QUICHE_PROTOCOL_VERSION); |
| if(!ctx->cfg) { |
| failf(data, "can't create quiche config"); |
| return CURLE_FAILED_INIT; |
| } |
| quiche_config_enable_pacing(ctx->cfg, false); |
| quiche_config_set_max_idle_timeout(ctx->cfg, QUIC_IDLE_TIMEOUT); |
| quiche_config_set_initial_max_data(ctx->cfg, (1 * 1024 * 1024) |
| /* (QUIC_MAX_STREAMS/2) * H3_STREAM_WINDOW_SIZE */); |
| quiche_config_set_initial_max_streams_bidi(ctx->cfg, QUIC_MAX_STREAMS); |
| quiche_config_set_initial_max_streams_uni(ctx->cfg, QUIC_MAX_STREAMS); |
| quiche_config_set_initial_max_stream_data_bidi_local(ctx->cfg, |
| H3_STREAM_WINDOW_SIZE); |
| quiche_config_set_initial_max_stream_data_bidi_remote(ctx->cfg, |
| H3_STREAM_WINDOW_SIZE); |
| quiche_config_set_initial_max_stream_data_uni(ctx->cfg, |
| H3_STREAM_WINDOW_SIZE); |
| quiche_config_set_disable_active_migration(ctx->cfg, TRUE); |
| |
| quiche_config_set_max_connection_window(ctx->cfg, |
| 10 * QUIC_MAX_STREAMS * H3_STREAM_WINDOW_SIZE); |
| quiche_config_set_max_stream_window(ctx->cfg, 10 * H3_STREAM_WINDOW_SIZE); |
| quiche_config_set_application_protos(ctx->cfg, |
| (uint8_t *) |
| QUICHE_H3_APPLICATION_PROTOCOL, |
| sizeof(QUICHE_H3_APPLICATION_PROTOCOL) |
| - 1); |
| |
| DEBUGASSERT(!ctx->ssl); |
| DEBUGASSERT(!ctx->sslctx); |
| ctx->sslctx = quic_ssl_ctx(data); |
| if(!ctx->sslctx) |
| return CURLE_QUIC_CONNECT_ERROR; |
| ctx->ssl = SSL_new(ctx->sslctx); |
| if(!ctx->ssl) |
| return CURLE_QUIC_CONNECT_ERROR; |
| |
| SSL_set_app_data(ctx->ssl, cf); |
| SSL_set_tlsext_host_name(ctx->ssl, cf->conn->host.name); |
| |
| result = Curl_rand(data, ctx->scid, sizeof(ctx->scid)); |
| if(result) |
| return result; |
| |
| Curl_cf_socket_peek(cf->next, data, &ctx->q.sockfd, |
| &sockaddr, NULL, NULL, NULL, NULL); |
| ctx->q.local_addrlen = sizeof(ctx->q.local_addr); |
| rv = getsockname(ctx->q.sockfd, (struct sockaddr *)&ctx->q.local_addr, |
| &ctx->q.local_addrlen); |
| if(rv == -1) |
| return CURLE_QUIC_CONNECT_ERROR; |
| |
| ctx->qconn = quiche_conn_new_with_tls((const uint8_t *)ctx->scid, |
| sizeof(ctx->scid), NULL, 0, |
| (struct sockaddr *)&ctx->q.local_addr, |
| ctx->q.local_addrlen, |
| &sockaddr->sa_addr, sockaddr->addrlen, |
| ctx->cfg, ctx->ssl, false); |
| if(!ctx->qconn) { |
| failf(data, "can't create quiche connection"); |
| return CURLE_OUT_OF_MEMORY; |
| } |
| |
| /* Known to not work on Windows */ |
| #if !defined(WIN32) && defined(HAVE_QUICHE_CONN_SET_QLOG_FD) |
| { |
| int qfd; |
| (void)Curl_qlogdir(data, ctx->scid, sizeof(ctx->scid), &qfd); |
| if(qfd != -1) |
| quiche_conn_set_qlog_fd(ctx->qconn, qfd, |
| "qlog title", "curl qlog"); |
| } |
| #endif |
| |
| /* we do not get a setup event for the initial transfer */ |
| result = h3_data_setup(cf, data); |
| if(result) |
| return result; |
| |
| result = cf_flush_egress(cf, data); |
| if(result) |
| return result; |
| |
| { |
| unsigned char alpn_protocols[] = QUICHE_H3_APPLICATION_PROTOCOL; |
| unsigned alpn_len, offset = 0; |
| |
| /* Replace each ALPN length prefix by a comma. */ |
| while(offset < sizeof(alpn_protocols) - 1) { |
| alpn_len = alpn_protocols[offset]; |
| alpn_protocols[offset] = ','; |
| offset += 1 + alpn_len; |
| } |
| |
| DEBUGF(LOG_CF(data, cf, "Sent QUIC client Initial, ALPN: %s", |
| alpn_protocols + 1)); |
| } |
| |
| return CURLE_OK; |
| } |
| |
| static CURLcode cf_quiche_connect(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| bool blocking, bool *done) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| CURLcode result = CURLE_OK; |
| struct curltime now; |
| |
| if(cf->connected) { |
| *done = TRUE; |
| return CURLE_OK; |
| } |
| |
| /* Connect the UDP filter first */ |
| if(!cf->next->connected) { |
| result = Curl_conn_cf_connect(cf->next, data, blocking, done); |
| if(result || !*done) |
| return result; |
| } |
| |
| *done = FALSE; |
| now = Curl_now(); |
| |
| if(ctx->reconnect_at.tv_sec && Curl_timediff(now, ctx->reconnect_at) < 0) { |
| /* Not time yet to attempt the next connect */ |
| DEBUGF(LOG_CF(data, cf, "waiting for reconnect time")); |
| goto out; |
| } |
| |
| if(!ctx->qconn) { |
| result = cf_connect_start(cf, data); |
| if(result) |
| goto out; |
| ctx->started_at = now; |
| result = cf_flush_egress(cf, data); |
| /* we do not expect to be able to recv anything yet */ |
| goto out; |
| } |
| |
| result = cf_process_ingress(cf, data); |
| if(result) |
| goto out; |
| |
| result = cf_flush_egress(cf, data); |
| if(result) |
| goto out; |
| |
| if(quiche_conn_is_established(ctx->qconn)) { |
| DEBUGF(LOG_CF(data, cf, "handshake complete after %dms", |
| (int)Curl_timediff(now, ctx->started_at))); |
| ctx->handshake_at = now; |
| result = cf_verify_peer(cf, data); |
| if(!result) { |
| DEBUGF(LOG_CF(data, cf, "peer verified")); |
| cf->connected = TRUE; |
| cf->conn->alpn = CURL_HTTP_VERSION_3; |
| *done = TRUE; |
| connkeep(cf->conn, "HTTP/3 default"); |
| } |
| } |
| else if(quiche_conn_is_draining(ctx->qconn)) { |
| /* When a QUIC server instance is shutting down, it may send us a |
| * CONNECTION_CLOSE right away. Our connection then enters the DRAINING |
| * state. |
| * This may be a stopping of the service or it may be that the server |
| * is reloading and a new instance will start serving soon. |
| * In any case, we tear down our socket and start over with a new one. |
| * We re-open the underlying UDP cf right now, but do not start |
| * connecting until called again. |
| */ |
| int reconn_delay_ms = 200; |
| |
| DEBUGF(LOG_CF(data, cf, "connect, remote closed, reconnect after %dms", |
| reconn_delay_ms)); |
| Curl_conn_cf_close(cf->next, data); |
| cf_quiche_ctx_clear(ctx); |
| result = Curl_conn_cf_connect(cf->next, data, FALSE, done); |
| if(!result && *done) { |
| *done = FALSE; |
| ctx->reconnect_at = Curl_now(); |
| ctx->reconnect_at.tv_usec += reconn_delay_ms * 1000; |
| Curl_expire(data, reconn_delay_ms, EXPIRE_QUIC); |
| result = CURLE_OK; |
| } |
| } |
| |
| out: |
| #ifndef CURL_DISABLE_VERBOSE_STRINGS |
| if(result && result != CURLE_AGAIN) { |
| const char *r_ip; |
| int r_port; |
| |
| Curl_cf_socket_peek(cf->next, data, NULL, NULL, |
| &r_ip, &r_port, NULL, NULL); |
| infof(data, "connect to %s port %u failed: %s", |
| r_ip, r_port, curl_easy_strerror(result)); |
| } |
| #endif |
| return result; |
| } |
| |
| static void cf_quiche_close(struct Curl_cfilter *cf, struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| |
| if(ctx) { |
| if(ctx->qconn) { |
| (void)quiche_conn_close(ctx->qconn, TRUE, 0, NULL, 0); |
| /* flushing the egress is not a failsafe way to deliver all the |
| outstanding packets, but we also don't want to get stuck here... */ |
| (void)cf_flush_egress(cf, data); |
| } |
| cf_quiche_ctx_clear(ctx); |
| } |
| } |
| |
| static void cf_quiche_destroy(struct Curl_cfilter *cf, struct Curl_easy *data) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| |
| (void)data; |
| cf_quiche_ctx_clear(ctx); |
| free(ctx); |
| cf->ctx = NULL; |
| } |
| |
| static CURLcode cf_quiche_query(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| int query, int *pres1, void *pres2) |
| { |
| struct cf_quiche_ctx *ctx = cf->ctx; |
| |
| switch(query) { |
| case CF_QUERY_MAX_CONCURRENT: { |
| uint64_t max_streams = CONN_INUSE(cf->conn); |
| if(!ctx->goaway) { |
| max_streams += quiche_conn_peer_streams_left_bidi(ctx->qconn); |
| } |
| *pres1 = (max_streams > INT_MAX)? INT_MAX : (int)max_streams; |
| DEBUGF(LOG_CF(data, cf, "query: MAX_CONCURRENT -> %d", *pres1)); |
| return CURLE_OK; |
| } |
| case CF_QUERY_CONNECT_REPLY_MS: |
| if(ctx->got_first_byte) { |
| timediff_t ms = Curl_timediff(ctx->first_byte_at, ctx->started_at); |
| *pres1 = (ms < INT_MAX)? (int)ms : INT_MAX; |
| } |
| else |
| *pres1 = -1; |
| return CURLE_OK; |
| case CF_QUERY_TIMER_CONNECT: { |
| struct curltime *when = pres2; |
| if(ctx->got_first_byte) |
| *when = ctx->first_byte_at; |
| return CURLE_OK; |
| } |
| case CF_QUERY_TIMER_APPCONNECT: { |
| struct curltime *when = pres2; |
| if(cf->connected) |
| *when = ctx->handshake_at; |
| return CURLE_OK; |
| } |
| default: |
| break; |
| } |
| return cf->next? |
| cf->next->cft->query(cf->next, data, query, pres1, pres2) : |
| CURLE_UNKNOWN_OPTION; |
| } |
| |
| static bool cf_quiche_conn_is_alive(struct Curl_cfilter *cf, |
| struct Curl_easy *data, |
| bool *input_pending) |
| { |
| bool alive = TRUE; |
| |
| *input_pending = FALSE; |
| if(!cf->next || !cf->next->cft->is_alive(cf->next, data, input_pending)) |
| return FALSE; |
| |
| if(*input_pending) { |
| /* This happens before we've sent off a request and the connection is |
| not in use by any other transfer, there shouldn't be any data here, |
| only "protocol frames" */ |
| *input_pending = FALSE; |
| Curl_attach_connection(data, cf->conn); |
| if(cf_process_ingress(cf, data)) |
| alive = FALSE; |
| else { |
| alive = TRUE; |
| } |
| Curl_detach_connection(data); |
| } |
| |
| return alive; |
| } |
| |
| struct Curl_cftype Curl_cft_http3 = { |
| "HTTP/3", |
| CF_TYPE_IP_CONNECT | CF_TYPE_SSL | CF_TYPE_MULTIPLEX, |
| 0, |
| cf_quiche_destroy, |
| cf_quiche_connect, |
| cf_quiche_close, |
| Curl_cf_def_get_host, |
| cf_quiche_get_select_socks, |
| cf_quiche_data_pending, |
| cf_quiche_send, |
| cf_quiche_recv, |
| cf_quiche_data_event, |
| cf_quiche_conn_is_alive, |
| Curl_cf_def_conn_keep_alive, |
| cf_quiche_query, |
| }; |
| |
| CURLcode Curl_cf_quiche_create(struct Curl_cfilter **pcf, |
| struct Curl_easy *data, |
| struct connectdata *conn, |
| const struct Curl_addrinfo *ai) |
| { |
| struct cf_quiche_ctx *ctx = NULL; |
| struct Curl_cfilter *cf = NULL, *udp_cf = NULL; |
| CURLcode result; |
| |
| (void)data; |
| (void)conn; |
| ctx = calloc(sizeof(*ctx), 1); |
| if(!ctx) { |
| result = CURLE_OUT_OF_MEMORY; |
| goto out; |
| } |
| |
| result = Curl_cf_create(&cf, &Curl_cft_http3, ctx); |
| if(result) |
| goto out; |
| |
| result = Curl_cf_udp_create(&udp_cf, data, conn, ai, TRNSPRT_QUIC); |
| if(result) |
| goto out; |
| |
| udp_cf->conn = cf->conn; |
| udp_cf->sockindex = cf->sockindex; |
| cf->next = udp_cf; |
| |
| out: |
| *pcf = (!result)? cf : NULL; |
| if(result) { |
| if(udp_cf) |
| Curl_conn_cf_discard_sub(cf, udp_cf, data, TRUE); |
| Curl_safefree(cf); |
| Curl_safefree(ctx); |
| } |
| |
| return result; |
| } |
| |
| bool Curl_conn_is_quiche(const struct Curl_easy *data, |
| const struct connectdata *conn, |
| int sockindex) |
| { |
| struct Curl_cfilter *cf = conn? conn->cfilter[sockindex] : NULL; |
| |
| (void)data; |
| for(; cf; cf = cf->next) { |
| if(cf->cft == &Curl_cft_http3) |
| return TRUE; |
| if(cf->cft->flags & CF_TYPE_IP_CONNECT) |
| return FALSE; |
| } |
| return FALSE; |
| } |
| |
| #endif |
