[sr-dev] git:master: modules_k/dialog: Allow configuration of when initial dialog
Timo Reimann
timo.reimann at 1und1.de
Tue Aug 16 19:55:26 CEST 2011
Module: sip-router
Branch: master
Commit: 48b8190c3fa1e42ed153f92d96e0fb7839712557
URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=48b8190c3fa1e42ed153f92d96e0fb7839712557
Author: Timo Reimann <timo.reimann at 1und1.de>
Committer: Timo Reimann <timo.reimann at 1und1.de>
Date: Tue Aug 2 20:14:52 2011 +0200
modules_k/dialog: Allow configuration of when initial dialog
callbacks are executed (either in-script or post-script).
- Implement functionality.
- Add documentation.
---
modules_k/dialog/dialog.c | 14 ++++++++++-
modules_k/dialog/dlg_handlers.c | 23 ++++++++++++++----
modules_k/dialog/dlg_handlers.h | 2 +-
modules_k/dialog/dlg_var.c | 8 ++++++
modules_k/dialog/dlg_var.h | 2 +
modules_k/dialog/doc/dialog_admin.xml | 40 +++++++++++++++++++++++++++++++++
6 files changed, 82 insertions(+), 7 deletions(-)
diff --git a/modules_k/dialog/dialog.c b/modules_k/dialog/dialog.c
index 5e751ac..7f029d8 100644
--- a/modules_k/dialog/dialog.c
+++ b/modules_k/dialog/dialog.c
@@ -104,6 +104,7 @@ static char* profiles_wv_s = NULL;
static char* profiles_nv_s = NULL;
str dlg_extra_hdrs = {NULL,0};
static int db_fetch_rows = 200;
+int initial_cbs_inscript = 1;
str dlg_bridge_controller = {"sip:controller at kamailio.org", 27};
@@ -241,6 +242,7 @@ static param_export_t mod_params[]={
{ "profiles_no_value", STR_PARAM, &profiles_nv_s },
{ "bridge_controller", STR_PARAM, &dlg_bridge_controller.s },
{ "ruri_pvar", STR_PARAM, &ruri_pvar_param.s },
+ { "initial_cbs_inscript", INT_PARAM, &initial_cbs_inscript },
{ 0,0,0 }
};
@@ -503,6 +505,11 @@ static int mod_init(void)
return -1;
}
+ if (initial_cbs_inscript != 0 && initial_cbs_inscript != 1) {
+ LM_ERR("invalid parameter for running initial callbacks in-script (must be either 0 or 1)\n");
+ return -1;
+ }
+
/* update the len of the extra headers */
if (dlg_extra_hdrs.s)
dlg_extra_hdrs.len = strlen(dlg_extra_hdrs.s);
@@ -575,6 +582,11 @@ static int mod_init(void)
return -1;
}
+ if (register_script_cb( spiral_detect_reset, POST_SCRIPT_CB|REQUEST_CB,0)<0) {
+ LM_ERR("cannot register req pre-script spiral detection reset callback\n");
+ return -1;
+ }
+
if ( register_timer( dlg_timer_routine, 0, 1)<0 ) {
LM_ERR("failed to register timer \n");
return -1;
@@ -902,7 +914,7 @@ static int w_dlg_manage(struct sip_msg *msg, char *s1, char *s2)
dlg_onroute(msg, NULL, NULL);
seq_match_mode = backup_mode;
} else {
- if(dlg_new_dialog(msg, 0)!=0)
+ if(dlg_new_dialog(msg, 0, initial_cbs_inscript)!=0)
return -1;
}
return 1;
diff --git a/modules_k/dialog/dlg_handlers.c b/modules_k/dialog/dlg_handlers.c
index a701fee..450fd09 100644
--- a/modules_k/dialog/dlg_handlers.c
+++ b/modules_k/dialog/dlg_handlers.c
@@ -83,6 +83,8 @@ static int default_timeout; /*!< default dialog timeout */
static int seq_match_mode; /*!< dlg_match mode */
static int shutdown_done = 0; /*!< 1 when destroy_dlg_handlers was called */
extern int detect_spirals;
+extern int initial_cbs_inscript;
+int spiral_detected = -1;
extern struct rr_binds d_rrb; /*!< binding to record-routing module */
@@ -609,11 +611,17 @@ void dlg_onreq(struct cell* t, int type, struct tmcb_params *param)
{
struct sip_msg *req = param->req;
+ if (!initial_cbs_inscript) {
+ if (spiral_detected == 1)
+ run_dlg_callbacks( DLGCB_SPIRALED, current_dlg_pointer, req, NULL, DLG_DIR_DOWNSTREAM, 0);
+ else if (spiral_detected == 0)
+ run_create_callbacks( current_dlg_pointer, req);
+ }
if((req->flags&dlg_flag)!=dlg_flag)
return;
if (current_dlg_pointer!=NULL)
return;
- dlg_new_dialog(req, t);
+ dlg_new_dialog(req, t, 1);
}
@@ -754,7 +762,7 @@ static void store_dlg_in_tm_cb (struct cell* t,
* \param t transaction
* \return 0 on success, -1 on failure
*/
-int dlg_new_dialog(struct sip_msg *req, struct cell *t)
+int dlg_new_dialog(struct sip_msg *req, struct cell *t, const int run_initial_cbs)
{
struct dlg_cell *dlg;
str s;
@@ -787,6 +795,9 @@ int dlg_new_dialog(struct sip_msg *req, struct cell *t)
if (detect_spirals)
{
+ if (spiral_detected == 1)
+ return 0;
+
dir = DLG_DIR_NONE;
dlg = get_dlg(&callid, &ftag, &ttag, &dir, &del);
@@ -801,14 +812,16 @@ int dlg_new_dialog(struct sip_msg *req, struct cell *t)
{
LM_DBG("Callid '%.*s' found, must be a spiraled request\n",
callid.len, callid.s);
+ spiral_detected = 1;
- run_dlg_callbacks( DLGCB_SPIRALED, dlg, req, NULL, DLG_DIR_DOWNSTREAM, 0);
-
+ if (run_initial_cbs)
+ run_dlg_callbacks( DLGCB_SPIRALED, dlg, req, NULL, DLG_DIR_DOWNSTREAM, 0);
// get_dlg with del==0 has incremented the ref count by 1
unref_dlg(dlg, 1);
goto finish;
}
}
+ spiral_detected = 0;
dlg = build_new_dlg (&callid /*callid*/,
&(get_from(req)->uri) /*from uri*/,
@@ -837,7 +850,7 @@ int dlg_new_dialog(struct sip_msg *req, struct cell *t)
link_dlg(dlg,0);
- run_create_callbacks(dlg, req);
+ if (run_initial_cbs) run_create_callbacks( dlg, req);
/* first INVITE seen (dialog created, unconfirmed) */
if ( seq_match_mode!=SEQ_MATCH_NO_ID &&
diff --git a/modules_k/dialog/dlg_handlers.h b/modules_k/dialog/dlg_handlers.h
index d56b7fb..eef5a8f 100644
--- a/modules_k/dialog/dlg_handlers.h
+++ b/modules_k/dialog/dlg_handlers.h
@@ -128,7 +128,7 @@ void dlg_ontimeout( struct dlg_tl *tl);
* \param t transaction
* \return 0 on success, -1 on failure
*/
-int dlg_new_dialog(struct sip_msg *msg, struct cell *t);
+int dlg_new_dialog(struct sip_msg *msg, struct cell *t, const int run_initial_cbs);
/*!
diff --git a/modules_k/dialog/dlg_var.c b/modules_k/dialog/dlg_var.c
index 42a7e91..6483233 100644
--- a/modules_k/dialog/dlg_var.c
+++ b/modules_k/dialog/dlg_var.c
@@ -29,6 +29,7 @@
#include "dlg_db_handler.h"
dlg_ctx_t _dlg_ctx;
+extern int spiral_detected;
/*! global variable table, in case the dialog does not exist yet */
struct dlg_var * var_table = 0;
@@ -721,3 +722,10 @@ dlg_ctx_t* dlg_get_dlg_ctx(void)
{
return &_dlg_ctx;
}
+
+int spiral_detect_reset(struct sip_msg *foo, unsigned int flags, void *bar)
+{
+ spiral_detected = -1;
+
+ return 0;
+}
diff --git a/modules_k/dialog/dlg_var.h b/modules_k/dialog/dlg_var.h
index 99ab746..cd53807 100644
--- a/modules_k/dialog/dlg_var.h
+++ b/modules_k/dialog/dlg_var.h
@@ -83,4 +83,6 @@ struct dlg_cell* dlg_get_ctx_dialog(void);
dlg_ctx_t* dlg_get_dlg_ctx(void);
+int spiral_detect_reset(struct sip_msg *foo, unsigned int flags, void *bar);
+
#endif
diff --git a/modules_k/dialog/doc/dialog_admin.xml b/modules_k/dialog/doc/dialog_admin.xml
index 34ac2ac..ae6c95d 100644
--- a/modules_k/dialog/doc/dialog_admin.xml
+++ b/modules_k/dialog/doc/dialog_admin.xml
@@ -1054,6 +1054,46 @@ modparam("dialog", "bridge_controller", "sip:ctd at kamailio.org")
</example>
</section>
+ <section>
+ <title><varname>initial_cbs_inscript</varname> (string)</title>
+ <para>
+ If the initial dialog callbacks (i.e., DLGCB_CREATED and
+ DLGCB_SPIRALED) should be executed in-script or post-script.
+ If dlg_manage() is not used, the setting of this parameter does
+ not matter; otherwise, initial callbacks will be executed
+ directly after dlg_manage() is called if this parameter is
+ enabled. If it is disabled, initial callback execution will be
+ postponed until configuration script execution completes.
+ </para>
+ <para>
+ The supported values are:
+ </para>
+ <itemizedlist>
+ <listitem><para>
+ <emphasis>0 - POST-SCRIPT</emphasis> - execute initial
+ callbacks after the script completes;
+ </para></listitem>
+ <listitem><para>
+ <emphasis>1 - IN-SCRIPT</emphasis> - execute initial
+ callbacks during script execution, i.e., right after
+ dlg_manage() is called;
+ </para></listitem>
+ </itemizedlist>
+ <para>
+ <emphasis>
+ Default value is <quote>1</quote>.
+ </emphasis>
+ </para>
+ <example>
+ <title>Set <varname>initial_cbs_inscript</varname> parameter</title>
+ <programlisting format="linespecific">
+...
+modparam("dialog", "initial_cbs_inscript", "0")
+...
+</programlisting>
+ </example>
+ </section>
+
</section>
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