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#include <haproxy/hq_interop.h>
#include <import/ist.h>
#include <haproxy/buf.h>
#include <haproxy/connection.h>
#include <haproxy/dynbuf.h>
#include <haproxy/htx.h>
#include <haproxy/http.h>
#include <haproxy/mux_quic.h>
#include <haproxy/qmux_http.h>
static ssize_t hq_interop_decode_qcs(struct qcs *qcs, struct buffer *b, int fin)
{
struct htx *htx;
struct htx_sl *sl;
struct buffer htx_buf = BUF_NULL;
struct ist path;
char *ptr = b_head(b);
size_t data = b_data(b);
/* hq-interop parser does not support buffer wrapping. */
BUG_ON(b_data(b) != b_contig_data(b, 0));
/* hq-interop parser is only done once full message is received. */
if (!fin)
return 0;
b_alloc(&htx_buf);
htx = htx_from_buf(&htx_buf);
/* skip method */
while (data && HTTP_IS_TOKEN(*ptr)) {
ptr++;
data--;
}
if (!data || !HTTP_IS_SPHT(*ptr)) {
fprintf(stderr, "truncated stream\n");
return -1;
}
ptr++;
if (!--data) {
fprintf(stderr, "truncated stream\n");
return -1;
}
if (HTTP_IS_LWS(*ptr)) {
fprintf(stderr, "malformed stream\n");
return -1;
}
/* extract path */
path.ptr = ptr;
while (data && !HTTP_IS_LWS(*ptr)) {
ptr++;
data--;
}
if (!data) {
fprintf(stderr, "truncated stream\n");
return -1;
}
path.len = ptr - path.ptr;
sl = htx_add_stline(htx, HTX_BLK_REQ_SL, 0, ist("GET"), path, ist("HTTP/1.0"));
if (!sl)
return -1;
sl->flags |= HTX_SL_F_BODYLESS;
sl->info.req.meth = find_http_meth("GET", 3);
htx_add_endof(htx, HTX_BLK_EOH);
htx->flags |= HTX_FL_EOM;
htx_to_buf(htx, &htx_buf);
if (!qcs_attach_sc(qcs, &htx_buf, fin))
return -1;
b_free(&htx_buf);
return b_data(b);
}
static struct buffer *mux_get_buf(struct qcs *qcs)
{
if (!b_size(&qcs->tx.buf))
b_alloc(&qcs->tx.buf);
return &qcs->tx.buf;
}
static size_t hq_interop_snd_buf(struct qcs *qcs, struct buffer *buf,
size_t count)
{
enum htx_blk_type btype;
struct htx *htx;
struct htx_blk *blk;
int32_t idx;
uint32_t bsize, fsize;
struct buffer *res, outbuf;
size_t total = 0;
res = mux_get_buf(qcs);
outbuf = b_make(b_tail(res), b_contig_space(res), 0, 0);
htx = htx_from_buf(buf);
if (htx->extra && htx->extra == HTX_UNKOWN_PAYLOAD_LENGTH)
qcs->flags |= QC_SF_UNKNOWN_PL_LENGTH;
while (count && !htx_is_empty(htx) && !(qcs->flags & QC_SF_BLK_MROOM)) {
/* Not implemented : QUIC on backend side */
idx = htx_get_head(htx);
blk = htx_get_blk(htx, idx);
btype = htx_get_blk_type(blk);
fsize = bsize = htx_get_blksz(blk);
BUG_ON(btype == HTX_BLK_REQ_SL);
switch (btype) {
case HTX_BLK_DATA:
if (fsize > count)
fsize = count;
if (b_room(&outbuf) < fsize)
fsize = b_room(&outbuf);
if (!fsize) {
qcs->flags |= QC_SF_BLK_MROOM;
goto end;
}
b_putblk(&outbuf, htx_get_blk_ptr(htx, blk), fsize);
total += fsize;
count -= fsize;
if (fsize == bsize)
htx_remove_blk(htx, blk);
else
htx_cut_data_blk(htx, blk, fsize);
break;
/* only body is transferred on HTTP/0.9 */
case HTX_BLK_RES_SL:
case HTX_BLK_TLR:
case HTX_BLK_EOT:
default:
htx_remove_blk(htx, blk);
total += bsize;
count -= bsize;
break;
}
}
end:
b_add(res, b_data(&outbuf));
htx_to_buf(htx, buf);
return total;
}
static int hq_interop_attach(struct qcs *qcs, void *conn_ctx)
{
qcs_wait_http_req(qcs);
return 0;
}
const struct qcc_app_ops hq_interop_ops = {
.decode_qcs = hq_interop_decode_qcs,
.snd_buf = hq_interop_snd_buf,
.attach = hq_interop_attach,
};
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