[sr-dev] git:kamailio_3.0: modules_k/dialog: Revert "Prevent 'unable to find dialog' WARN

Module: sip-router Branch: kamailio_3.0 Commit: 2e570f72f82e9cf29a6e0a2b73e4019c8820847b URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=2e570f7… Author: Timo Reimann &lt;timo.reimann(a)1und1.de&gt; Committer: Timo Reimann &lt;timo.reimann(a)1und1.de&gt; Date: Thu Aug 5 17:23:34 2010 +0200 modules_k/dialog: Revert "Prevent 'unable to find dialog' WARN messages caused by accessing a dialog in the "deleted" state". The approach chosen was incomplete as it requires extending checks of return values for all calls to get_dlg() and lookup_dlg() against POINTER_CLOSED_MARKER. Otherwise, it may lead to server crashes when code mistakes POINTER_CLOSED_MARKER for an existing dialog. However, having to check against two return values requires a lot of logic changes. Therefore, a better approach will be taken in a follow-up commit. This reverts commit 9b7f25d7196e41cbcc77c1d6e316cb1a8664ed81. (cherry picked from commit 0723496c037d8e22210861d6a0e9041351097f63) --- modules_k/dialog/dlg_cb.c | 2 ++ modules_k/dialog/dlg_handlers.c | 6 +----- modules_k/dialog/dlg_hash.c | 7 +++---- modules_k/dialog/dlg_hash.h | 2 -- 4 files changed, 6 insertions(+), 11 deletions(-) diff --git a/modules_k/dialog/dlg_cb.c b/modules_k/dialog/dlg_cb.c index 464083e..24b3b39 100644 --- a/modules_k/dialog/dlg_cb.c +++ b/modules_k/dialog/dlg_cb.c @@ -43,6 +43,8 @@ static struct dlg_head_cbl* load_cbs = 0; static struct dlg_cb_params params = {NULL, DLG_DIR_NONE, NULL, NULL}; +#define POINTER_CLOSED_MARKER ((void *)(-1)) + static void run_load_callback(struct dlg_callback *cb); diff --git a/modules_k/dialog/dlg_handlers.c b/modules_k/dialog/dlg_handlers.c index a3610cc..976ac0f 100644 --- a/modules_k/dialog/dlg_handlers.c +++ b/modules_k/dialog/dlg_handlers.c @@ -824,11 +824,7 @@ void dlg_onroute(struct sip_msg* req, str *route_params, void *param) return; dlg = lookup_dlg( h_entry, h_id); - if (dlg == POINTER_CLOSED_MARKER) { - LM_DBG("dialog marked for destruction, ignoring\n"); - return; - } - else if (dlg==0) { + if (dlg==0) { LM_WARN("unable to find dialog for %.*s " "with route param '%.*s' [%u:%u]\n", req->first_line.u.request.method.len, diff --git a/modules_k/dialog/dlg_hash.c b/modules_k/dialog/dlg_hash.c index b3d626b..6df21e3 100644 --- a/modules_k/dialog/dlg_hash.c +++ b/modules_k/dialog/dlg_hash.c @@ -378,8 +378,7 @@ struct dlg_cell* lookup_dlg( unsigned int h_entry, unsigned int h_id) if (dlg->h_id == h_id) { if (dlg->state==DLG_STATE_DELETED) { dlg_unlock( d_table, d_entry); - LM_DBG("dialog id=%u on entry %u marked for deletion\n", h_id, h_entry); - return POINTER_CLOSED_MARKER; + goto not_found; } dlg->ref++; LM_DBG("ref dlg %p with 1 -> %d\n", dlg, dlg->ref); @@ -419,9 +418,8 @@ static inline struct dlg_cell* internal_get_dlg(unsigned int h_entry, /* Check callid / fromtag / totag */ if (match_dialog( dlg, callid, ftag, ttag, dir)==1) { if (dlg->state==DLG_STATE_DELETED) { - LM_DBG("dialog callid='%.*s' marked for deletion\n", callid->len, callid->s); dlg_unlock( d_table, d_entry); - return POINTER_CLOSED_MARKER; + goto not_found; } dlg->ref++; LM_DBG("ref dlg %p with 1 -> %d\n", dlg, dlg->ref); @@ -434,6 +432,7 @@ static inline struct dlg_cell* internal_get_dlg(unsigned int h_entry, dlg_unlock( d_table, d_entry); +not_found: LM_DBG("no dialog callid='%.*s' found\n", callid->len, callid->s); return 0; } diff --git a/modules_k/dialog/dlg_hash.h b/modules_k/dialog/dlg_hash.h index 6aa6db5..889a318 100644 --- a/modules_k/dialog/dlg_hash.h +++ b/modules_k/dialog/dlg_hash.h @@ -83,8 +83,6 @@ #define DLG_DIR_DOWNSTREAM 1 /*!< dialog has downstream direction */ #define DLG_DIR_UPSTREAM 2 /*!< dialog has upstream direction */ -#define POINTER_CLOSED_MARKER ((void *)(-1)) - /*! entries in the dialog list */ struct dlg_cell