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authorDaniel Stenberg <daniel@haxx.se>2020-05-07 14:17:42 +0200
committerDaniel Stenberg <daniel@haxx.se>2020-05-07 16:27:49 +0200
commit14c17a2b6e0c377c16db43d0e963a31db597ece5 (patch)
treec40c748e00665f6ebf7fe7fe23bcb1ef97766b2a /lib/vquic
parent2a81439553286f12cd04a4bdcdf66d8e026d8201 (diff)
ngtcp2: introduce qlog support
If the QLOGDIR environment variable is set, enable qlogging. ... and create Curl_qlogdir() in the new generic vquic/vquic.c file for QUIC functions that are backend independent. Closes #5353
Diffstat (limited to 'lib/vquic')
-rw-r--r--lib/vquic/ngtcp2.c32
-rw-r--r--lib/vquic/ngtcp2.h1
-rw-r--r--lib/vquic/quiche.c42
-rw-r--r--lib/vquic/vquic.c85
-rw-r--r--lib/vquic/vquic.h34
5 files changed, 155 insertions, 39 deletions
diff --git a/lib/vquic/ngtcp2.c b/lib/vquic/ngtcp2.c
index 8cec432a4..66c5002b2 100644
--- a/lib/vquic/ngtcp2.c
+++ b/lib/vquic/ngtcp2.c
@@ -39,6 +39,7 @@
#include "connect.h"
#include "strerror.h"
#include "dynbuf.h"
+#include "vquic.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
@@ -160,9 +161,25 @@ static int setup_initial_crypto_context(struct quicsocket *qs)
return 0;
}
-static void quic_settings(ngtcp2_settings *s,
- uint64_t stream_buffer_size)
+static void qlog_callback(void *user_data, const void *data, size_t datalen)
{
+ struct quicsocket *qs = (struct quicsocket *)user_data;
+ if(qs->qlogfd != -1) {
+ ssize_t rc = write(qs->qlogfd, data, datalen);
+ if(rc == -1) {
+ /* on write error, stop further write attempts */
+ close(qs->qlogfd);
+ qs->qlogfd = -1;
+ }
+ }
+
+}
+
+static void quic_settings(struct quicsocket *qs,
+ uint64_t stream_buffer_size,
+ ngtcp2_cid *dcid)
+{
+ ngtcp2_settings *s = &qs->settings;
ngtcp2_settings_default(s);
#ifdef DEBUG_NGTCP2
s->log_printf = quic_printf;
@@ -177,6 +194,10 @@ static void quic_settings(ngtcp2_settings *s,
s->transport_params.initial_max_streams_bidi = 1;
s->transport_params.initial_max_streams_uni = 3;
s->transport_params.max_idle_timeout = QUIC_IDLE_TIMEOUT;
+ if(qs->qlogfd != -1) {
+ s->qlog.write = qlog_callback;
+ s->qlog.odcid = *dcid;
+ }
}
static FILE *keylog_file; /* not thread-safe */
@@ -825,6 +846,7 @@ CURLcode Curl_quic_connect(struct connectdata *conn,
struct quicsocket *qs = &conn->hequic[sockindex];
char ipbuf[40];
long port;
+ int qfd;
#ifdef USE_OPENSSL
uint8_t paramsbuf[64];
ngtcp2_transport_params params;
@@ -864,7 +886,9 @@ CURLcode Curl_quic_connect(struct connectdata *conn,
if(result)
return result;
- quic_settings(&qs->settings, data->set.buffer_size);
+ (void)Curl_qlogdir(data, qs->scid.data, NGTCP2_MAX_CIDLEN, &qfd);
+ qs->qlogfd = qfd; /* -1 if failure above */
+ quic_settings(qs, data->set.buffer_size, &qs->dcid);
qs->local_addrlen = sizeof(qs->local_addr);
rv = getsockname(sockfd, (struct sockaddr *)&qs->local_addr,
@@ -950,6 +974,8 @@ static CURLcode ng_disconnect(struct connectdata *conn,
int i;
struct quicsocket *qs = &conn->hequic[0];
(void)dead_connection;
+ if(qs->qlogfd != -1)
+ close(qs->qlogfd);
if(qs->ssl)
#ifdef USE_OPENSSL
SSL_free(qs->ssl);
diff --git a/lib/vquic/ngtcp2.h b/lib/vquic/ngtcp2.h
index 06337f6f9..e2f8b5600 100644
--- a/lib/vquic/ngtcp2.h
+++ b/lib/vquic/ngtcp2.h
@@ -63,6 +63,7 @@ struct quicsocket {
nghttp3_conn *h3conn;
nghttp3_conn_settings h3settings;
+ int qlogfd;
};
#include "urldata.h"
diff --git a/lib/vquic/quiche.c b/lib/vquic/quiche.c
index 38c0a0a3f..45c39925f 100644
--- a/lib/vquic/quiche.c
+++ b/lib/vquic/quiche.c
@@ -34,10 +34,7 @@
#include "multiif.h"
#include "connect.h"
#include "strerror.h"
-#include "dynbuf.h"
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
+#include "vquic.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
@@ -204,39 +201,12 @@ CURLcode Curl_quic_connect(struct connectdata *conn, curl_socket_t sockfd,
/* Known to not work on Windows */
#if !defined(WIN32) && defined(HAVE_QUICHE_CONN_SET_QLOG_FD)
-#ifdef O_BINARY
-#define QLOGMODE O_WRONLY|O_CREAT|O_BINARY
-#else
-#define QLOGMODE O_WRONLY|O_CREAT
-#endif
{
- const char *qlog_dir = getenv("QLOGDIR");
- if(qlog_dir) {
- struct dynbuf fname;
- unsigned int i;
- Curl_dyn_init(&fname, DYN_QLOG_NAME);
- result = Curl_dyn_add(&fname, qlog_dir);
- if(!result)
- result = Curl_dyn_add(&fname, "/");
- for(i = 0; (i < sizeof(qs->scid)) && !result; i++) {
- char hex[3];
- msnprintf(hex, 3, "%02x", qs->scid[i]);
- result = Curl_dyn_add(&fname, hex);
- }
- if(!result)
- result = Curl_dyn_add(&fname, ".qlog");
-
- if(!result) {
- int qlogfd = open(Curl_dyn_ptr(&fname), QLOGMODE,
- data->set.new_file_perms);
- if(qlogfd != -1)
- quiche_conn_set_qlog_fd(qs->conn, qlogfd,
- "qlog title", "curl qlog");
- }
- Curl_dyn_free(&fname);
- if(result)
- return result;
- }
+ int qfd;
+ (void)Curl_qlogdir(data, qs->scid, sizeof(qs->scid), &qfd);
+ if(qfd != -1)
+ quiche_conn_set_qlog_fd(qs->conn, qfd,
+ "qlog title", "curl qlog");
}
#endif
diff --git a/lib/vquic/vquic.c b/lib/vquic/vquic.c
new file mode 100644
index 000000000..aae8e0951
--- /dev/null
+++ b/lib/vquic/vquic.c
@@ -0,0 +1,85 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2020, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#ifdef ENABLE_QUIC
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#include "urldata.h"
+#include "dynbuf.h"
+#include "curl_printf.h"
+#include "vquic.h"
+
+#ifdef O_BINARY
+#define QLOGMODE O_WRONLY|O_CREAT|O_BINARY
+#else
+#define QLOGMODE O_WRONLY|O_CREAT
+#endif
+
+/*
+ * If the QLOGDIR environment variable is set, open and return a file
+ * descriptor to write the log to.
+ *
+ * This function returns error if something failed outside of failing to
+ * create the file. Open file success is deemed by seeing if the returned fd
+ * is != -1.
+ */
+CURLcode Curl_qlogdir(struct Curl_easy *data,
+ unsigned char *scid,
+ size_t scidlen,
+ int *qlogfdp)
+{
+ const char *qlog_dir = getenv("QLOGDIR");
+ *qlogfdp = -1;
+ if(qlog_dir) {
+ struct dynbuf fname;
+ CURLcode result;
+ unsigned int i;
+ Curl_dyn_init(&fname, DYN_QLOG_NAME);
+ result = Curl_dyn_add(&fname, qlog_dir);
+ if(!result)
+ result = Curl_dyn_add(&fname, "/");
+ for(i = 0; (i < scidlen) && !result; i++) {
+ char hex[3];
+ msnprintf(hex, 3, "%02x", scid[i]);
+ result = Curl_dyn_add(&fname, hex);
+ }
+ if(!result)
+ result = Curl_dyn_add(&fname, ".qlog");
+
+ if(!result) {
+ int qlogfd = open(Curl_dyn_ptr(&fname), QLOGMODE,
+ data->set.new_file_perms);
+ if(qlogfd != -1)
+ *qlogfdp = qlogfd;
+ }
+ Curl_dyn_free(&fname);
+ if(result)
+ return result;
+ }
+
+ return CURLE_OK;
+}
+#endif
diff --git a/lib/vquic/vquic.h b/lib/vquic/vquic.h
new file mode 100644
index 000000000..ecff0edf4
--- /dev/null
+++ b/lib/vquic/vquic.h
@@ -0,0 +1,34 @@
+#ifndef HEADER_CURL_VQUIC_QUIC_H
+#define HEADER_CURL_VQUIC_QUIC_H
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2020, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#ifdef ENABLE_QUIC
+CURLcode Curl_qlogdir(struct Curl_easy *data,
+ unsigned char *scid,
+ size_t scidlen,
+ int *qlogfdp);
+#endif
+
+#endif /* HEADER_CURL_VQUIC_QUIC_H */