mirror of
https://github.com/moparisthebest/curl
synced 2024-12-23 00:28:48 -05:00
0f4a03cbb6
Since we just started make use of free(NULL) in order to simplify code, this change takes it a step further and: - converts lots of Curl_safefree() calls to good old free() - makes Curl_safefree() not check the pointer before free() The (new) rule of thumb is: if you really want a function call that frees a pointer and then assigns it to NULL, then use Curl_safefree(). But we will prefer just using free() from now on.
1068 lines
32 KiB
C
1068 lines
32 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2015, 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 http://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 USE_NGHTTP2
|
|
#include "curl_printf.h"
|
|
#include <nghttp2/nghttp2.h>
|
|
#include "urldata.h"
|
|
#include "http2.h"
|
|
#include "http.h"
|
|
#include "sendf.h"
|
|
#include "curl_base64.h"
|
|
#include "curl_memory.h"
|
|
#include "rawstr.h"
|
|
#include "multiif.h"
|
|
|
|
/* include memdebug.h last */
|
|
#include "memdebug.h"
|
|
|
|
#if (NGHTTP2_VERSION_NUM < 0x000600)
|
|
#error too old nghttp2 version, upgrade!
|
|
#endif
|
|
|
|
static int http2_perform_getsock(const struct connectdata *conn,
|
|
curl_socket_t *sock, /* points to
|
|
numsocks
|
|
number of
|
|
sockets */
|
|
int numsocks)
|
|
{
|
|
const struct http_conn *httpc = &conn->proto.httpc;
|
|
int bitmap = GETSOCK_BLANK;
|
|
(void)numsocks;
|
|
|
|
/* TODO We should check underlying socket state if it is SSL socket
|
|
because of renegotiation. */
|
|
sock[0] = conn->sock[FIRSTSOCKET];
|
|
|
|
if(nghttp2_session_want_read(httpc->h2))
|
|
bitmap |= GETSOCK_READSOCK(FIRSTSOCKET);
|
|
|
|
if(nghttp2_session_want_write(httpc->h2))
|
|
bitmap |= GETSOCK_WRITESOCK(FIRSTSOCKET);
|
|
|
|
return bitmap;
|
|
}
|
|
|
|
static int http2_getsock(struct connectdata *conn,
|
|
curl_socket_t *sock, /* points to numsocks
|
|
number of sockets */
|
|
int numsocks)
|
|
{
|
|
return http2_perform_getsock(conn, sock, numsocks);
|
|
}
|
|
|
|
static CURLcode http2_disconnect(struct connectdata *conn,
|
|
bool dead_connection)
|
|
{
|
|
struct http_conn *httpc = &conn->proto.httpc;
|
|
(void)dead_connection;
|
|
|
|
DEBUGF(infof(conn->data, "HTTP/2 DISCONNECT starts now\n"));
|
|
|
|
nghttp2_session_del(httpc->h2);
|
|
|
|
Curl_safefree(httpc->header_recvbuf->buffer);
|
|
Curl_safefree(httpc->header_recvbuf);
|
|
|
|
Curl_safefree(httpc->inbuf);
|
|
|
|
DEBUGF(infof(conn->data, "HTTP/2 DISCONNECT done\n"));
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* HTTP2 handler interface. This isn't added to the general list of protocols
|
|
* but will be used at run-time when the protocol is dynamically switched from
|
|
* HTTP to HTTP2.
|
|
*/
|
|
const struct Curl_handler Curl_handler_http2 = {
|
|
"HTTP2", /* scheme */
|
|
ZERO_NULL, /* setup_connection */
|
|
Curl_http, /* do_it */
|
|
Curl_http_done, /* done */
|
|
ZERO_NULL, /* do_more */
|
|
ZERO_NULL, /* connect_it */
|
|
ZERO_NULL, /* connecting */
|
|
ZERO_NULL, /* doing */
|
|
http2_getsock, /* proto_getsock */
|
|
http2_getsock, /* doing_getsock */
|
|
ZERO_NULL, /* domore_getsock */
|
|
http2_perform_getsock, /* perform_getsock */
|
|
http2_disconnect, /* disconnect */
|
|
ZERO_NULL, /* readwrite */
|
|
PORT_HTTP, /* defport */
|
|
CURLPROTO_HTTP, /* protocol */
|
|
PROTOPT_NONE /* flags */
|
|
};
|
|
|
|
const struct Curl_handler Curl_handler_http2_ssl = {
|
|
"HTTP2", /* scheme */
|
|
ZERO_NULL, /* setup_connection */
|
|
Curl_http, /* do_it */
|
|
Curl_http_done, /* done */
|
|
ZERO_NULL, /* do_more */
|
|
ZERO_NULL, /* connect_it */
|
|
ZERO_NULL, /* connecting */
|
|
ZERO_NULL, /* doing */
|
|
http2_getsock, /* proto_getsock */
|
|
http2_getsock, /* doing_getsock */
|
|
ZERO_NULL, /* domore_getsock */
|
|
http2_perform_getsock, /* perform_getsock */
|
|
http2_disconnect, /* disconnect */
|
|
ZERO_NULL, /* readwrite */
|
|
PORT_HTTP, /* defport */
|
|
CURLPROTO_HTTPS, /* protocol */
|
|
PROTOPT_SSL /* flags */
|
|
};
|
|
|
|
/*
|
|
* Store nghttp2 version info in this buffer, Prefix with a space. Return
|
|
* total length written.
|
|
*/
|
|
int Curl_http2_ver(char *p, size_t len)
|
|
{
|
|
nghttp2_info *h2 = nghttp2_version(0);
|
|
return snprintf(p, len, " nghttp2/%s", h2->version_str);
|
|
}
|
|
|
|
/*
|
|
* The implementation of nghttp2_send_callback type. Here we write |data| with
|
|
* size |length| to the network and return the number of bytes actually
|
|
* written. See the documentation of nghttp2_send_callback for the details.
|
|
*/
|
|
static ssize_t send_callback(nghttp2_session *h2,
|
|
const uint8_t *data, size_t length, int flags,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct http_conn *httpc = &conn->proto.httpc;
|
|
ssize_t written;
|
|
CURLcode result = CURLE_OK;
|
|
|
|
(void)h2;
|
|
(void)flags;
|
|
|
|
written = ((Curl_send*)httpc->send_underlying)(conn, FIRSTSOCKET,
|
|
data, length, &result);
|
|
|
|
if(result == CURLE_AGAIN) {
|
|
return NGHTTP2_ERR_WOULDBLOCK;
|
|
}
|
|
|
|
if(written == -1) {
|
|
failf(conn->data, "Failed sending HTTP2 data");
|
|
return NGHTTP2_ERR_CALLBACK_FAILURE;
|
|
}
|
|
|
|
if(!written)
|
|
return NGHTTP2_ERR_WOULDBLOCK;
|
|
|
|
return written;
|
|
}
|
|
|
|
static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct http_conn *c = &conn->proto.httpc;
|
|
int rv;
|
|
size_t left, ncopy;
|
|
|
|
(void)session;
|
|
(void)frame;
|
|
DEBUGF(infof(conn->data, "on_frame_recv() was called with header %x\n",
|
|
frame->hd.type));
|
|
switch(frame->hd.type) {
|
|
case NGHTTP2_DATA:
|
|
/* If body started, then receiving DATA is illegal. */
|
|
if(!c->bodystarted) {
|
|
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
|
frame->hd.stream_id,
|
|
NGHTTP2_PROTOCOL_ERROR);
|
|
|
|
if(nghttp2_is_fatal(rv)) {
|
|
return NGHTTP2_ERR_CALLBACK_FAILURE;
|
|
}
|
|
}
|
|
break;
|
|
case NGHTTP2_HEADERS:
|
|
if(frame->headers.cat == NGHTTP2_HCAT_REQUEST)
|
|
break;
|
|
|
|
if(c->bodystarted) {
|
|
/* Only valid HEADERS after body started is trailer header,
|
|
which is not fully supported in this code. If HEADERS is not
|
|
trailer, then it is a PROTOCOL_ERROR. */
|
|
if((frame->hd.flags & NGHTTP2_FLAG_END_STREAM) == 0) {
|
|
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
|
frame->hd.stream_id,
|
|
NGHTTP2_PROTOCOL_ERROR);
|
|
|
|
if(nghttp2_is_fatal(rv)) {
|
|
return NGHTTP2_ERR_CALLBACK_FAILURE;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
if(c->status_code == -1) {
|
|
/* No :status header field means PROTOCOL_ERROR. */
|
|
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
|
frame->hd.stream_id,
|
|
NGHTTP2_PROTOCOL_ERROR);
|
|
|
|
if(nghttp2_is_fatal(rv)) {
|
|
return NGHTTP2_ERR_CALLBACK_FAILURE;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
/* Only final status code signals the end of header */
|
|
if(c->status_code / 100 != 1) {
|
|
c->bodystarted = TRUE;
|
|
}
|
|
|
|
c->status_code = -1;
|
|
|
|
Curl_add_buffer(c->header_recvbuf, "\r\n", 2);
|
|
|
|
left = c->header_recvbuf->size_used - c->nread_header_recvbuf;
|
|
ncopy = c->len < left ? c->len : left;
|
|
|
|
memcpy(c->mem, c->header_recvbuf->buffer + c->nread_header_recvbuf, ncopy);
|
|
c->nread_header_recvbuf += ncopy;
|
|
|
|
c->mem += ncopy;
|
|
c->len -= ncopy;
|
|
break;
|
|
case NGHTTP2_PUSH_PROMISE:
|
|
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
|
frame->push_promise.promised_stream_id,
|
|
NGHTTP2_CANCEL);
|
|
if(nghttp2_is_fatal(rv)) {
|
|
return rv;
|
|
}
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int on_invalid_frame_recv(nghttp2_session *session,
|
|
const nghttp2_frame *frame,
|
|
uint32_t error_code, void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
(void)session;
|
|
(void)frame;
|
|
DEBUGF(infof(conn->data,
|
|
"on_invalid_frame_recv() was called, error_code = %d\n",
|
|
error_code));
|
|
return 0;
|
|
}
|
|
|
|
static int on_data_chunk_recv(nghttp2_session *session, uint8_t flags,
|
|
int32_t stream_id,
|
|
const uint8_t *data, size_t len, void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct http_conn *c = &conn->proto.httpc;
|
|
size_t nread;
|
|
(void)session;
|
|
(void)flags;
|
|
(void)data;
|
|
DEBUGF(infof(conn->data, "on_data_chunk_recv() "
|
|
"len = %u, stream = %x\n", len, stream_id));
|
|
|
|
if(stream_id != c->stream_id) {
|
|
return 0;
|
|
}
|
|
|
|
nread = c->len < len ? c->len : len;
|
|
memcpy(c->mem, data, nread);
|
|
|
|
c->mem += nread;
|
|
c->len -= nread;
|
|
|
|
DEBUGF(infof(conn->data, "%zu data written\n", nread));
|
|
|
|
if(nread < len) {
|
|
c->data = data + nread;
|
|
c->datalen = len - nread;
|
|
return NGHTTP2_ERR_PAUSE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int before_frame_send(nghttp2_session *session,
|
|
const nghttp2_frame *frame,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
(void)session;
|
|
(void)frame;
|
|
DEBUGF(infof(conn->data, "before_frame_send() was called\n"));
|
|
return 0;
|
|
}
|
|
static int on_frame_send(nghttp2_session *session,
|
|
const nghttp2_frame *frame,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
(void)session;
|
|
(void)frame;
|
|
DEBUGF(infof(conn->data, "on_frame_send() was called\n"));
|
|
return 0;
|
|
}
|
|
static int on_frame_not_send(nghttp2_session *session,
|
|
const nghttp2_frame *frame,
|
|
int lib_error_code, void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
(void)session;
|
|
(void)frame;
|
|
DEBUGF(infof(conn->data,
|
|
"on_frame_not_send() was called, lib_error_code = %d\n",
|
|
lib_error_code));
|
|
return 0;
|
|
}
|
|
static int on_stream_close(nghttp2_session *session, int32_t stream_id,
|
|
uint32_t error_code, void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct http_conn *c = &conn->proto.httpc;
|
|
(void)session;
|
|
(void)stream_id;
|
|
DEBUGF(infof(conn->data, "on_stream_close() was called, error_code = %d\n",
|
|
error_code));
|
|
|
|
if(stream_id != c->stream_id) {
|
|
return 0;
|
|
}
|
|
|
|
c->error_code = error_code;
|
|
c->closed = TRUE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int on_begin_headers(nghttp2_session *session,
|
|
const nghttp2_frame *frame, void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
(void)session;
|
|
(void)frame;
|
|
DEBUGF(infof(conn->data, "on_begin_headers() was called\n"));
|
|
return 0;
|
|
}
|
|
|
|
/* Decode HTTP status code. Returns -1 if no valid status code was
|
|
decoded. */
|
|
static int decode_status_code(const uint8_t *value, size_t len)
|
|
{
|
|
int i;
|
|
int res;
|
|
|
|
if(len != 3) {
|
|
return -1;
|
|
}
|
|
|
|
res = 0;
|
|
|
|
for(i = 0; i < 3; ++i) {
|
|
char c = value[i];
|
|
|
|
if(c < '0' || c > '9') {
|
|
return -1;
|
|
}
|
|
|
|
res *= 10;
|
|
res += c - '0';
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static const char STATUS[] = ":status";
|
|
|
|
/* frame->hd.type is either NGHTTP2_HEADERS or NGHTTP2_PUSH_PROMISE */
|
|
static int on_header(nghttp2_session *session, const nghttp2_frame *frame,
|
|
const uint8_t *name, size_t namelen,
|
|
const uint8_t *value, size_t valuelen,
|
|
uint8_t flags,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct http_conn *c = &conn->proto.httpc;
|
|
int rv;
|
|
int goodname;
|
|
int goodheader;
|
|
|
|
(void)session;
|
|
(void)frame;
|
|
(void)flags;
|
|
|
|
/* Ignore PUSH_PROMISE for now */
|
|
if(frame->hd.type != NGHTTP2_HEADERS) {
|
|
return 0;
|
|
}
|
|
|
|
if(frame->hd.stream_id != c->stream_id) {
|
|
return 0;
|
|
}
|
|
|
|
if(c->bodystarted) {
|
|
/* Ignore trailer or HEADERS not mapped to HTTP semantics. The
|
|
consequence is handled in on_frame_recv(). */
|
|
return 0;
|
|
}
|
|
|
|
goodname = nghttp2_check_header_name(name, namelen);
|
|
goodheader = nghttp2_check_header_value(value, valuelen);
|
|
|
|
if(!goodname || !goodheader) {
|
|
|
|
infof(conn->data, "Detected bad incoming header %s%s, reset stream!\n",
|
|
goodname?"":"name",
|
|
goodheader?"":"value");
|
|
|
|
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
|
frame->hd.stream_id,
|
|
NGHTTP2_PROTOCOL_ERROR);
|
|
|
|
if(nghttp2_is_fatal(rv)) {
|
|
return NGHTTP2_ERR_CALLBACK_FAILURE;
|
|
}
|
|
|
|
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
|
|
}
|
|
|
|
if(namelen == sizeof(":status") - 1 &&
|
|
memcmp(STATUS, name, namelen) == 0) {
|
|
|
|
/* :status must appear exactly once. */
|
|
if(c->status_code != -1 ||
|
|
(c->status_code = decode_status_code(value, valuelen)) == -1) {
|
|
|
|
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
|
frame->hd.stream_id,
|
|
NGHTTP2_PROTOCOL_ERROR);
|
|
if(nghttp2_is_fatal(rv)) {
|
|
return NGHTTP2_ERR_CALLBACK_FAILURE;
|
|
}
|
|
|
|
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
|
|
}
|
|
|
|
Curl_add_buffer(c->header_recvbuf, "HTTP/2.0 ", 9);
|
|
Curl_add_buffer(c->header_recvbuf, value, valuelen);
|
|
Curl_add_buffer(c->header_recvbuf, "\r\n", 2);
|
|
|
|
return 0;
|
|
}
|
|
else {
|
|
/* Here we are sure that namelen > 0 because of
|
|
nghttp2_check_header_name(). Pseudo header other than :status
|
|
is illegal. */
|
|
if(c->status_code == -1 || name[0] == ':') {
|
|
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
|
frame->hd.stream_id,
|
|
NGHTTP2_PROTOCOL_ERROR);
|
|
if(nghttp2_is_fatal(rv)) {
|
|
return NGHTTP2_ERR_CALLBACK_FAILURE;
|
|
}
|
|
|
|
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
|
|
}
|
|
|
|
/* convert to a HTTP1-style header */
|
|
Curl_add_buffer(c->header_recvbuf, name, namelen);
|
|
Curl_add_buffer(c->header_recvbuf, ":", 1);
|
|
Curl_add_buffer(c->header_recvbuf, value, valuelen);
|
|
Curl_add_buffer(c->header_recvbuf, "\r\n", 2);
|
|
|
|
DEBUGF(infof(conn->data, "h2 header: %.*s: %.*s\n",
|
|
namelen, name, valuelen, value));
|
|
}
|
|
|
|
return 0; /* 0 is successful */
|
|
}
|
|
|
|
static ssize_t data_source_read_callback(nghttp2_session *session,
|
|
int32_t stream_id,
|
|
uint8_t *buf, size_t length,
|
|
uint32_t *data_flags,
|
|
nghttp2_data_source *source,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct http_conn *c = &conn->proto.httpc;
|
|
size_t nread;
|
|
(void)session;
|
|
(void)stream_id;
|
|
(void)source;
|
|
|
|
nread = c->upload_len < length ? c->upload_len : length;
|
|
if(nread > 0) {
|
|
memcpy(buf, c->upload_mem, nread);
|
|
c->upload_mem += nread;
|
|
c->upload_len -= nread;
|
|
c->upload_left -= nread;
|
|
}
|
|
|
|
if(c->upload_left == 0)
|
|
*data_flags = 1;
|
|
else if(nread == 0)
|
|
return NGHTTP2_ERR_DEFERRED;
|
|
|
|
return nread;
|
|
}
|
|
|
|
/*
|
|
* The HTTP2 settings we send in the Upgrade request
|
|
*/
|
|
static nghttp2_settings_entry settings[] = {
|
|
{ NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 100 },
|
|
{ NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, NGHTTP2_INITIAL_WINDOW_SIZE },
|
|
};
|
|
|
|
#define H2_BUFSIZE 4096
|
|
|
|
/*
|
|
* Initialize nghttp2 for a Curl connection
|
|
*/
|
|
CURLcode Curl_http2_init(struct connectdata *conn)
|
|
{
|
|
if(!conn->proto.httpc.h2) {
|
|
int rc;
|
|
nghttp2_session_callbacks *callbacks;
|
|
|
|
conn->proto.httpc.inbuf = malloc(H2_BUFSIZE);
|
|
if(conn->proto.httpc.inbuf == NULL)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
rc = nghttp2_session_callbacks_new(&callbacks);
|
|
|
|
if(rc) {
|
|
failf(conn->data, "Couldn't initialize nghttp2 callbacks!");
|
|
return CURLE_OUT_OF_MEMORY; /* most likely at least */
|
|
}
|
|
|
|
/* nghttp2_send_callback */
|
|
nghttp2_session_callbacks_set_send_callback(callbacks, send_callback);
|
|
/* nghttp2_on_frame_recv_callback */
|
|
nghttp2_session_callbacks_set_on_frame_recv_callback
|
|
(callbacks, on_frame_recv);
|
|
/* nghttp2_on_invalid_frame_recv_callback */
|
|
nghttp2_session_callbacks_set_on_invalid_frame_recv_callback
|
|
(callbacks, on_invalid_frame_recv);
|
|
/* nghttp2_on_data_chunk_recv_callback */
|
|
nghttp2_session_callbacks_set_on_data_chunk_recv_callback
|
|
(callbacks, on_data_chunk_recv);
|
|
/* nghttp2_before_frame_send_callback */
|
|
nghttp2_session_callbacks_set_before_frame_send_callback
|
|
(callbacks, before_frame_send);
|
|
/* nghttp2_on_frame_send_callback */
|
|
nghttp2_session_callbacks_set_on_frame_send_callback
|
|
(callbacks, on_frame_send);
|
|
/* nghttp2_on_frame_not_send_callback */
|
|
nghttp2_session_callbacks_set_on_frame_not_send_callback
|
|
(callbacks, on_frame_not_send);
|
|
/* nghttp2_on_stream_close_callback */
|
|
nghttp2_session_callbacks_set_on_stream_close_callback
|
|
(callbacks, on_stream_close);
|
|
/* nghttp2_on_begin_headers_callback */
|
|
nghttp2_session_callbacks_set_on_begin_headers_callback
|
|
(callbacks, on_begin_headers);
|
|
/* nghttp2_on_header_callback */
|
|
nghttp2_session_callbacks_set_on_header_callback(callbacks, on_header);
|
|
|
|
/* The nghttp2 session is not yet setup, do it */
|
|
rc = nghttp2_session_client_new(&conn->proto.httpc.h2,
|
|
callbacks, conn);
|
|
|
|
nghttp2_session_callbacks_del(callbacks);
|
|
|
|
if(rc) {
|
|
failf(conn->data, "Couldn't initialize nghttp2!");
|
|
return CURLE_OUT_OF_MEMORY; /* most likely at least */
|
|
}
|
|
}
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Send a request using http2
|
|
*/
|
|
CURLcode Curl_http2_send_request(struct connectdata *conn)
|
|
{
|
|
(void)conn;
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Append headers to ask for a HTTP1.1 to HTTP2 upgrade.
|
|
*/
|
|
CURLcode Curl_http2_request_upgrade(Curl_send_buffer *req,
|
|
struct connectdata *conn)
|
|
{
|
|
CURLcode result;
|
|
ssize_t binlen;
|
|
char *base64;
|
|
size_t blen;
|
|
struct SingleRequest *k = &conn->data->req;
|
|
uint8_t *binsettings = conn->proto.httpc.binsettings;
|
|
|
|
result = Curl_http2_init(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
result = Curl_http2_setup(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
/* As long as we have a fixed set of settings, we don't have to dynamically
|
|
* figure out the base64 strings since it'll always be the same. However,
|
|
* the settings will likely not be fixed every time in the future.
|
|
*/
|
|
|
|
/* this returns number of bytes it wrote */
|
|
binlen = nghttp2_pack_settings_payload(binsettings, H2_BINSETTINGS_LEN,
|
|
settings,
|
|
sizeof(settings)/sizeof(settings[0]));
|
|
if(!binlen) {
|
|
failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");
|
|
return CURLE_FAILED_INIT;
|
|
}
|
|
conn->proto.httpc.binlen = binlen;
|
|
|
|
result = Curl_base64url_encode(conn->data, (const char *)binsettings, binlen,
|
|
&base64, &blen);
|
|
if(result)
|
|
return result;
|
|
|
|
result = Curl_add_bufferf(req,
|
|
"Connection: Upgrade, HTTP2-Settings\r\n"
|
|
"Upgrade: %s\r\n"
|
|
"HTTP2-Settings: %s\r\n",
|
|
NGHTTP2_CLEARTEXT_PROTO_VERSION_ID, base64);
|
|
free(base64);
|
|
|
|
k->upgr101 = UPGR101_REQUESTED;
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* If the read would block (EWOULDBLOCK) we return -1. Otherwise we return
|
|
* a regular CURLcode value.
|
|
*/
|
|
static ssize_t http2_recv(struct connectdata *conn, int sockindex,
|
|
char *mem, size_t len, CURLcode *err)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
ssize_t rv;
|
|
ssize_t nread;
|
|
struct http_conn *httpc = &conn->proto.httpc;
|
|
|
|
(void)sockindex; /* we always do HTTP2 on sockindex 0 */
|
|
|
|
if(httpc->closed) {
|
|
/* Reset to FALSE to prevent infinite loop in readwrite_data
|
|
function. */
|
|
httpc->closed = FALSE;
|
|
return 0;
|
|
}
|
|
|
|
/* Nullify here because we call nghttp2_session_send() and they
|
|
might refer to the old buffer. */
|
|
httpc->upload_mem = NULL;
|
|
httpc->upload_len = 0;
|
|
|
|
if(httpc->bodystarted &&
|
|
httpc->nread_header_recvbuf < httpc->header_recvbuf->size_used) {
|
|
size_t left =
|
|
httpc->header_recvbuf->size_used - httpc->nread_header_recvbuf;
|
|
size_t ncopy = len < left ? len : left;
|
|
memcpy(mem, httpc->header_recvbuf->buffer + httpc->nread_header_recvbuf,
|
|
ncopy);
|
|
httpc->nread_header_recvbuf += ncopy;
|
|
return ncopy;
|
|
}
|
|
|
|
if(httpc->data) {
|
|
nread = len < httpc->datalen ? len : httpc->datalen;
|
|
memcpy(mem, httpc->data, nread);
|
|
|
|
httpc->data += nread;
|
|
httpc->datalen -= nread;
|
|
|
|
infof(conn->data, "%zu data bytes written\n", nread);
|
|
if(httpc->datalen == 0) {
|
|
httpc->data = NULL;
|
|
httpc->datalen = 0;
|
|
}
|
|
return nread;
|
|
}
|
|
|
|
conn->proto.httpc.mem = mem;
|
|
conn->proto.httpc.len = len;
|
|
|
|
infof(conn->data, "http2_recv: %d bytes buffer\n",
|
|
conn->proto.httpc.len);
|
|
|
|
nread = ((Curl_recv*)httpc->recv_underlying)(conn, FIRSTSOCKET,
|
|
httpc->inbuf, H2_BUFSIZE,
|
|
&result);
|
|
if(result == CURLE_AGAIN) {
|
|
*err = result;
|
|
return -1;
|
|
}
|
|
|
|
if(nread == -1) {
|
|
failf(conn->data, "Failed receiving HTTP2 data");
|
|
*err = result;
|
|
return 0;
|
|
}
|
|
|
|
if(nread == 0) {
|
|
failf(conn->data, "Unexpected EOF");
|
|
*err = CURLE_RECV_ERROR;
|
|
return -1;
|
|
}
|
|
|
|
DEBUGF(infof(conn->data, "nread=%zd\n", nread));
|
|
|
|
rv = nghttp2_session_mem_recv(httpc->h2,
|
|
(const uint8_t *)httpc->inbuf, nread);
|
|
|
|
if(nghttp2_is_fatal((int)rv)) {
|
|
failf(conn->data, "nghttp2_session_mem_recv() returned %d:%s\n",
|
|
rv, nghttp2_strerror((int)rv));
|
|
*err = CURLE_RECV_ERROR;
|
|
return 0;
|
|
}
|
|
DEBUGF(infof(conn->data, "nghttp2_session_mem_recv() returns %zd\n", rv));
|
|
/* Always send pending frames in nghttp2 session, because
|
|
nghttp2_session_mem_recv() may queue new frame */
|
|
rv = nghttp2_session_send(httpc->h2);
|
|
if(rv != 0) {
|
|
*err = CURLE_SEND_ERROR;
|
|
return 0;
|
|
}
|
|
if(len != httpc->len) {
|
|
return len - conn->proto.httpc.len;
|
|
}
|
|
/* If stream is closed, return 0 to signal the http routine to close
|
|
the connection */
|
|
if(httpc->closed) {
|
|
/* Reset to FALSE to prevent infinite loop in readwrite_data
|
|
function. */
|
|
httpc->closed = FALSE;
|
|
if(httpc->error_code != NGHTTP2_NO_ERROR) {
|
|
failf(conn->data,
|
|
"HTTP/2 stream = %x was not closed cleanly: error_code = %d",
|
|
httpc->stream_id, httpc->error_code);
|
|
*err = CURLE_HTTP2;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
*err = CURLE_AGAIN;
|
|
return -1;
|
|
}
|
|
|
|
/* Index where :authority header field will appear in request header
|
|
field list. */
|
|
#define AUTHORITY_DST_IDX 3
|
|
|
|
/* return number of received (decrypted) bytes */
|
|
static ssize_t http2_send(struct connectdata *conn, int sockindex,
|
|
const void *mem, size_t len, CURLcode *err)
|
|
{
|
|
/*
|
|
* BIG TODO: Currently, we send request in this function, but this
|
|
* function is also used to send request body. It would be nice to
|
|
* add dedicated function for request.
|
|
*/
|
|
int rv;
|
|
struct http_conn *httpc = &conn->proto.httpc;
|
|
nghttp2_nv *nva;
|
|
size_t nheader;
|
|
size_t i;
|
|
size_t authority_idx;
|
|
char *hdbuf = (char*)mem;
|
|
char *end;
|
|
nghttp2_data_provider data_prd;
|
|
int32_t stream_id;
|
|
|
|
(void)sockindex;
|
|
|
|
DEBUGF(infof(conn->data, "http2_send len=%zu\n", len));
|
|
|
|
if(httpc->stream_id != -1) {
|
|
/* If stream_id != -1, we have dispatched request HEADERS, and now
|
|
are going to send or sending request body in DATA frame */
|
|
httpc->upload_mem = mem;
|
|
httpc->upload_len = len;
|
|
nghttp2_session_resume_data(httpc->h2, httpc->stream_id);
|
|
rv = nghttp2_session_send(httpc->h2);
|
|
if(nghttp2_is_fatal(rv)) {
|
|
*err = CURLE_SEND_ERROR;
|
|
return -1;
|
|
}
|
|
return len - httpc->upload_len;
|
|
}
|
|
|
|
/* Calculate number of headers contained in [mem, mem + len) */
|
|
/* Here, we assume the curl http code generate *correct* HTTP header
|
|
field block */
|
|
nheader = 0;
|
|
for(i = 0; i < len; ++i) {
|
|
if(hdbuf[i] == 0x0a) {
|
|
++nheader;
|
|
}
|
|
}
|
|
/* We counted additional 2 \n in the first and last line. We need 3
|
|
new headers: :method, :path and :scheme. Therefore we need one
|
|
more space. */
|
|
nheader += 1;
|
|
nva = malloc(sizeof(nghttp2_nv) * nheader);
|
|
if(nva == NULL) {
|
|
*err = CURLE_OUT_OF_MEMORY;
|
|
return -1;
|
|
}
|
|
/* Extract :method, :path from request line */
|
|
end = strchr(hdbuf, ' ');
|
|
nva[0].name = (unsigned char *)":method";
|
|
nva[0].namelen = (uint16_t)strlen((char *)nva[0].name);
|
|
nva[0].value = (unsigned char *)hdbuf;
|
|
nva[0].valuelen = (uint16_t)(end - hdbuf);
|
|
nva[0].flags = NGHTTP2_NV_FLAG_NONE;
|
|
|
|
hdbuf = end + 1;
|
|
|
|
end = strchr(hdbuf, ' ');
|
|
nva[1].name = (unsigned char *)":path";
|
|
nva[1].namelen = (uint16_t)strlen((char *)nva[1].name);
|
|
nva[1].value = (unsigned char *)hdbuf;
|
|
nva[1].valuelen = (uint16_t)(end - hdbuf);
|
|
nva[1].flags = NGHTTP2_NV_FLAG_NONE;
|
|
|
|
nva[2].name = (unsigned char *)":scheme";
|
|
nva[2].namelen = (uint16_t)strlen((char *)nva[2].name);
|
|
if(conn->handler->flags & PROTOPT_SSL)
|
|
nva[2].value = (unsigned char *)"https";
|
|
else
|
|
nva[2].value = (unsigned char *)"http";
|
|
nva[2].valuelen = (uint16_t)strlen((char *)nva[2].value);
|
|
nva[2].flags = NGHTTP2_NV_FLAG_NONE;
|
|
|
|
hdbuf = strchr(hdbuf, 0x0a);
|
|
++hdbuf;
|
|
|
|
authority_idx = 0;
|
|
|
|
for(i = 3; i < nheader; ++i) {
|
|
end = strchr(hdbuf, ':');
|
|
assert(end);
|
|
if(end - hdbuf == 4 && Curl_raw_nequal("host", hdbuf, 4)) {
|
|
authority_idx = i;
|
|
nva[i].name = (unsigned char *)":authority";
|
|
nva[i].namelen = (uint16_t)strlen((char *)nva[i].name);
|
|
}
|
|
else {
|
|
nva[i].name = (unsigned char *)hdbuf;
|
|
nva[i].namelen = (uint16_t)(end - hdbuf);
|
|
}
|
|
hdbuf = end + 1;
|
|
for(; *hdbuf == ' '; ++hdbuf);
|
|
end = strchr(hdbuf, 0x0d);
|
|
assert(end);
|
|
nva[i].value = (unsigned char *)hdbuf;
|
|
nva[i].valuelen = (uint16_t)(end - hdbuf);
|
|
nva[i].flags = NGHTTP2_NV_FLAG_NONE;
|
|
|
|
hdbuf = end + 2;
|
|
/* Inspect Content-Length header field and retrieve the request
|
|
entity length so that we can set END_STREAM to the last DATA
|
|
frame. */
|
|
if(nva[i].namelen == 14 &&
|
|
Curl_raw_nequal("content-length", (char*)nva[i].name, 14)) {
|
|
size_t j;
|
|
for(j = 0; j < nva[i].valuelen; ++j) {
|
|
httpc->upload_left *= 10;
|
|
httpc->upload_left += nva[i].value[j] - '0';
|
|
}
|
|
DEBUGF(infof(conn->data,
|
|
"request content-length=%zu\n", httpc->upload_left));
|
|
}
|
|
}
|
|
|
|
/* :authority must come before non-pseudo header fields */
|
|
if(authority_idx != 0 && authority_idx != AUTHORITY_DST_IDX) {
|
|
nghttp2_nv authority = nva[authority_idx];
|
|
for(i = authority_idx; i > AUTHORITY_DST_IDX; --i) {
|
|
nva[i] = nva[i - 1];
|
|
}
|
|
nva[i] = authority;
|
|
}
|
|
|
|
switch(conn->data->set.httpreq) {
|
|
case HTTPREQ_POST:
|
|
case HTTPREQ_POST_FORM:
|
|
case HTTPREQ_PUT:
|
|
data_prd.read_callback = data_source_read_callback;
|
|
data_prd.source.ptr = NULL;
|
|
stream_id = nghttp2_submit_request(httpc->h2, NULL, nva, nheader,
|
|
&data_prd, NULL);
|
|
break;
|
|
default:
|
|
stream_id = nghttp2_submit_request(httpc->h2, NULL, nva, nheader,
|
|
NULL, NULL);
|
|
}
|
|
|
|
free(nva);
|
|
|
|
if(stream_id < 0) {
|
|
*err = CURLE_SEND_ERROR;
|
|
return -1;
|
|
}
|
|
|
|
httpc->stream_id = stream_id;
|
|
|
|
rv = nghttp2_session_send(httpc->h2);
|
|
|
|
if(rv != 0) {
|
|
*err = CURLE_SEND_ERROR;
|
|
return -1;
|
|
}
|
|
|
|
if(httpc->stream_id != -1) {
|
|
/* If whole HEADERS frame was sent off to the underlying socket,
|
|
the nghttp2 library calls data_source_read_callback. But only
|
|
it found that no data available, so it deferred the DATA
|
|
transmission. Which means that nghttp2_session_want_write()
|
|
returns 0 on http2_perform_getsock(), which results that no
|
|
writable socket check is performed. To workaround this, we
|
|
issue nghttp2_session_resume_data() here to bring back DATA
|
|
transmission from deferred state. */
|
|
nghttp2_session_resume_data(httpc->h2, httpc->stream_id);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
CURLcode Curl_http2_setup(struct connectdata *conn)
|
|
{
|
|
struct http_conn *httpc = &conn->proto.httpc;
|
|
if(conn->handler->flags & PROTOPT_SSL)
|
|
conn->handler = &Curl_handler_http2_ssl;
|
|
else
|
|
conn->handler = &Curl_handler_http2;
|
|
|
|
infof(conn->data, "Using HTTP2\n");
|
|
httpc->bodystarted = FALSE;
|
|
httpc->error_code = NGHTTP2_NO_ERROR;
|
|
httpc->closed = FALSE;
|
|
httpc->header_recvbuf = Curl_add_buffer_init();
|
|
httpc->nread_header_recvbuf = 0;
|
|
httpc->data = NULL;
|
|
httpc->datalen = 0;
|
|
httpc->upload_left = 0;
|
|
httpc->upload_mem = NULL;
|
|
httpc->upload_len = 0;
|
|
httpc->stream_id = -1;
|
|
httpc->status_code = -1;
|
|
|
|
conn->httpversion = 20;
|
|
|
|
return 0;
|
|
}
|
|
|
|
CURLcode Curl_http2_switched(struct connectdata *conn,
|
|
const char *mem, size_t nread)
|
|
{
|
|
CURLcode result;
|
|
struct http_conn *httpc = &conn->proto.httpc;
|
|
int rv;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
httpc->recv_underlying = (recving)conn->recv[FIRSTSOCKET];
|
|
httpc->send_underlying = (sending)conn->send[FIRSTSOCKET];
|
|
conn->recv[FIRSTSOCKET] = http2_recv;
|
|
conn->send[FIRSTSOCKET] = http2_send;
|
|
|
|
rv = (int) ((Curl_send*)httpc->send_underlying)
|
|
(conn, FIRSTSOCKET,
|
|
NGHTTP2_CLIENT_CONNECTION_PREFACE,
|
|
NGHTTP2_CLIENT_CONNECTION_PREFACE_LEN,
|
|
&result);
|
|
if(result)
|
|
/* TODO: This may get CURLE_AGAIN */
|
|
return result;
|
|
|
|
if(rv != 24) {
|
|
failf(data, "Only sent partial HTTP2 packet");
|
|
return CURLE_SEND_ERROR;
|
|
}
|
|
|
|
if(conn->data->req.upgr101 == UPGR101_RECEIVED) {
|
|
/* stream 1 is opened implicitly on upgrade */
|
|
httpc->stream_id = 1;
|
|
/* queue SETTINGS frame (again) */
|
|
rv = nghttp2_session_upgrade(httpc->h2, httpc->binsettings,
|
|
httpc->binlen, NULL);
|
|
if(rv != 0) {
|
|
failf(data, "nghttp2_session_upgrade() failed: %s(%d)",
|
|
nghttp2_strerror(rv), rv);
|
|
return CURLE_HTTP2;
|
|
}
|
|
}
|
|
else {
|
|
/* stream ID is unknown at this point */
|
|
httpc->stream_id = -1;
|
|
rv = nghttp2_submit_settings(httpc->h2, NGHTTP2_FLAG_NONE, NULL, 0);
|
|
if(rv != 0) {
|
|
failf(data, "nghttp2_submit_settings() failed: %s(%d)",
|
|
nghttp2_strerror(rv), rv);
|
|
return CURLE_HTTP2;
|
|
}
|
|
}
|
|
|
|
rv = (int)nghttp2_session_mem_recv(httpc->h2, (const uint8_t*)mem, nread);
|
|
|
|
if(rv != (int)nread) {
|
|
failf(data, "nghttp2_session_mem_recv() failed: %s(%d)",
|
|
nghttp2_strerror(rv), rv);
|
|
return CURLE_HTTP2;
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
#endif
|