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BUG/MEDIUM: connections: Don't assume the connection has a valid session.

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Don't assume the connection always has a valid session in "owner".
Instead, attempt to retrieve the session from the stream, and modify
the error snapshot code to not assume we always have a session, or the proxy
for the other end.
This commit is contained in:
Olivier Houchard 2020-03-12 15:30:17 +01:00 committed by Olivier Houchard
parent 1544c14c57
commit bdb00c5db9
3 changed files with 25 additions and 9 deletions
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11
src/mux_fcgi.c
View File

@ -3136,9 +3136,18 @@ static void fcgi_strm_capture_bad_message(struct fcgi_conn *fconn, struct fcgi_s
{ {
struct session *sess = fstrm->sess; struct session *sess = fstrm->sess;
struct proxy *proxy = fconn->proxy; struct proxy *proxy = fconn->proxy;
struct proxy *other_end = sess->fe; struct proxy *other_end;
union error_snapshot_ctx ctx; union error_snapshot_ctx ctx;
if (fstrm->cs && fstrm->cs->data) {
if (sess == NULL)
sess = si_strm(fstrm->cs->data)->sess;
if (!(h1m->flags & H1_MF_RESP))
other_end = si_strm(fstrm->cs->data)->be;
else
other_end = sess->fe;
} else
other_end = NULL;
/* http-specific part now */ /* http-specific part now */
ctx.h1.state = h1m->state; ctx.h1.state = h1m->state;
ctx.h1.c_flags = fconn->flags; ctx.h1.c_flags = fconn->flags;

13
src/mux_h1.c
View File

@ -1054,11 +1054,18 @@ static void h1_capture_bad_message(struct h1c *h1c, struct h1s *h1s,
{ {
struct session *sess = h1c->conn->owner; struct session *sess = h1c->conn->owner;
struct proxy *proxy = h1c->px; struct proxy *proxy = h1c->px;
struct proxy *other_end = sess->fe; struct proxy *other_end;
union error_snapshot_ctx ctx; union error_snapshot_ctx ctx;
if (h1s->cs->data && !(h1m->flags & H1_MF_RESP)) if (h1s->cs && h1s->cs->data) {
other_end = si_strm(h1s->cs->data)->be; if (sess == NULL)
sess = si_strm(h1s->cs->data)->sess;
if (!(h1m->flags & H1_MF_RESP))
other_end = si_strm(h1s->cs->data)->be;
else
other_end = sess->fe;
} else
other_end = NULL;
/* http-specific part now */ /* http-specific part now */
ctx.h1.state = h1m->state; ctx.h1.state = h1m->state;

10
src/proxy.c
View File

@ -1560,7 +1560,7 @@ void proxy_capture_error(struct proxy *proxy, int is_back,
es->when = date; // user-visible date es->when = date; // user-visible date
es->srv = objt_server(target); es->srv = objt_server(target);
es->oe = other_end; es->oe = other_end;
if (objt_conn(sess->origin) && conn_get_src(__objt_conn(sess->origin))) if (sess && objt_conn(sess->origin) && conn_get_src(__objt_conn(sess->origin)))
es->src = *__objt_conn(sess->origin)->src; es->src = *__objt_conn(sess->origin)->src;
else else
memset(&es->src, 0, sizeof(es->src)); memset(&es->src, 0, sizeof(es->src));
@ -2234,7 +2234,7 @@ static int cli_io_handler_show_errors(struct appctx *appctx)
if (appctx->ctx.errors.iid >= 0 && if (appctx->ctx.errors.iid >= 0 &&
appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid && appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
es->oe->uuid != appctx->ctx.errors.iid) (!es->oe || es->oe->uuid != appctx->ctx.errors.iid))
goto next; goto next;
if (appctx->ctx.errors.ptr < 0) { if (appctx->ctx.errors.ptr < 0) {
@ -2264,15 +2264,15 @@ static int cli_io_handler_show_errors(struct appctx *appctx)
" frontend %s (#%d): invalid request\n" " frontend %s (#%d): invalid request\n"
" backend %s (#%d)", " backend %s (#%d)",
appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid, appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
(es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>", (es->oe && es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
(es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1); (es->oe && es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
break; break;
case 1: case 1:
chunk_appendf(&trash, chunk_appendf(&trash,
" backend %s (#%d): invalid response\n" " backend %s (#%d): invalid response\n"
" frontend %s (#%d)", " frontend %s (#%d)",
appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid, appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
es->oe->id, es->oe->uuid); es->oe ? es->oe->id : "<NONE>" , es->oe ? es->oe->uuid : -1);
break; break;
} }