---
.../smbdotconf/printing/spoolssbackchannel.xml | 16 ++++++++++++++++
source3/include/proto.h | 1 +
source3/param/loadparm.c | 12 ++++++++++++
source3/rpc_server/spoolss/srv_spoolss_nt.c | 6 ++++++
4 files changed, 35 insertions(+), 0 deletions(-)
create mode 100644 docs-xml/smbdotconf/printing/spoolssbackchannel.xml
diff --git a/docs-xml/smbdotconf/printing/spoolssbackchannel.xml
b/docs-xml/smbdotconf/printing/spoolssbackchannel.xml
new file mode 100644
index 0000000..dc168fe
--- /dev/null
+++ b/docs-xml/smbdotconf/printing/spoolssbackchannel.xml
@@ -0,0 +1,16 @@
+<samba:parameter name="spoolss backchannel"
+ context="S"
+ print="1"
+ type="boolean"
+
xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
+<synonym>print ok</synonym>
+<description>
+ <para>Windows print clients often demand that the server opens
+ connections back to them. Due to firewall settings this can cause
+ considerable timeouts. By setting this parameter to
+ <constant>no</constant> the Samba print server will not even
try
+ to connect to clients and treat corresponding requests as if the
+ connection back to the client failed.
+</description>
+<value type="default">yes</value>
+</samba:parameter>
diff --git a/source3/include/proto.h b/source3/include/proto.h
index 78965de..f58fb12 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -3200,6 +3200,7 @@ bool lp_guest_ok(int );
bool lp_guest_only(int );
bool lp_administrative_share(int );
bool lp_print_ok(int );
+bool lp_spoolss_backchannel(int );
bool lp_map_hidden(int );
bool lp_map_archive(int );
bool lp_store_dos_attributes(int );
diff --git a/source3/param/loadparm.c b/source3/param/loadparm.c
index 3314ad2..7ca5543 100644
--- a/source3/param/loadparm.c
+++ b/source3/param/loadparm.c
@@ -474,6 +474,7 @@ struct service {
bool bAdministrative_share;
bool bGuest_ok;
bool bPrint_ok;
+ bool bSpoolssBackchannel;
bool bMap_system;
bool bMap_hidden;
bool bMap_archive;
@@ -618,6 +619,7 @@ static struct service sDefault = {
False, /* bAdministrative_share */
False, /* bGuest_ok */
False, /* bPrint_ok */
+ True, /* bSpoolssBackchannel */
False, /* bMap_system */
False, /* bMap_hidden */
True, /* bMap_archive */
@@ -2722,6 +2724,15 @@ static struct parm_struct parm_table[] = {
.flags = FLAG_HIDE,
},
{
+ .label = "spoolss backchannel",
+ .type = P_BOOL,
+ .p_class = P_LOCAL,
+ .ptr = &sDefault.bSpoolssBackchannel,
+ .special = NULL,
+ .enum_list = NULL,
+ .flags = FLAG_ADVANCED,
+ },
+ {
.label = "printing",
.type = P_ENUM,
.p_class = P_LOCAL,
@@ -5918,6 +5929,7 @@ FN_LOCAL_BOOL(lp_guest_ok, bGuest_ok)
FN_LOCAL_BOOL(lp_guest_only, bGuest_only)
FN_LOCAL_BOOL(lp_administrative_share, bAdministrative_share)
FN_LOCAL_BOOL(lp_print_ok, bPrint_ok)
+FN_LOCAL_BOOL(lp_spoolss_backchannel, bSpoolssBackchannel)
FN_LOCAL_BOOL(lp_map_hidden, bMap_hidden)
FN_LOCAL_BOOL(lp_map_archive, bMap_archive)
FN_LOCAL_BOOL(lp_store_dos_attributes, bStoreDosAttributes)
diff --git a/source3/rpc_server/spoolss/srv_spoolss_nt.c
b/source3/rpc_server/spoolss/srv_spoolss_nt.c
index 3026a88..3a5b060 100644
--- a/source3/rpc_server/spoolss/srv_spoolss_nt.c
+++ b/source3/rpc_server/spoolss/srv_spoolss_nt.c
@@ -2736,6 +2736,12 @@ WERROR
_spoolss_RemoteFindFirstPrinterChangeNotifyEx(struct pipes_struct *p,
DEBUG(10,("_spoolss_RemoteFindFirstPrinterChangeNotifyEx: "
"client_address is %s\n", p->client_id->addr));
+ if (!lp_spoolss_backchannel(snum)) {
+ DEBUG(10, ("_spoolss_RemoteFindFirstPrinterChangeNotifyEx: "
+ "backchannel disabled\n"));
+ return WERR_SERVER_UNAVAILABLE;
+ }
+
if (!interpret_string_addr(&client_ss, p->client_id->addr,
AI_NUMERICHOST)) {
return WERR_SERVER_UNAVAILABLE;
--
1.7.0.4
---
.../smbdotconf/printing/spoolssbackchannel.xml | 16 ++++++++++++++++
source3/include/proto.h | 1 +
source3/param/loadparm.c | 12 ++++++++++++
source3/rpc_server/srv_spoolss_nt.c | 6 ++++++
4 files changed, 35 insertions(+), 0 deletions(-)
create mode 100644 docs-xml/smbdotconf/printing/spoolssbackchannel.xml
diff --git a/docs-xml/smbdotconf/printing/spoolssbackchannel.xml
b/docs-xml/smbdotconf/printing/spoolssbackchannel.xml
new file mode 100644
index 0000000..dc168fe
--- /dev/null
+++ b/docs-xml/smbdotconf/printing/spoolssbackchannel.xml
@@ -0,0 +1,16 @@
+<samba:parameter name="spoolss backchannel"
+ context="S"
+ print="1"
+ type="boolean"
+
xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
+<synonym>print ok</synonym>
+<description>
+ <para>Windows print clients often demand that the server opens
+ connections back to them. Due to firewall settings this can cause
+ considerable timeouts. By setting this parameter to
+ <constant>no</constant> the Samba print server will not even
try
+ to connect to clients and treat corresponding requests as if the
+ connection back to the client failed.
+</description>
+<value type="default">yes</value>
+</samba:parameter>
diff --git a/source3/include/proto.h b/source3/include/proto.h
index ef80b92..3b0f28b 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -4186,6 +4186,7 @@ bool lp_guest_ok(int );
bool lp_guest_only(int );
bool lp_administrative_share(int );
bool lp_print_ok(int );
+bool lp_spoolss_backchannel(int );
bool lp_map_hidden(int );
bool lp_map_archive(int );
bool lp_store_dos_attributes(int );
diff --git a/source3/param/loadparm.c b/source3/param/loadparm.c
index 76e2303..d88327e 100644
--- a/source3/param/loadparm.c
+++ b/source3/param/loadparm.c
@@ -450,6 +450,7 @@ struct service {
bool bAdministrative_share;
bool bGuest_ok;
bool bPrint_ok;
+ bool bSpoolssBackchannel;
bool bMap_system;
bool bMap_hidden;
bool bMap_archive;
@@ -594,6 +595,7 @@ static struct service sDefault = {
False, /* bAdministrative_share */
False, /* bGuest_ok */
False, /* bPrint_ok */
+ True, /* bSpoolssBackchannel */
False, /* bMap_system */
False, /* bMap_hidden */
True, /* bMap_archive */
@@ -2642,6 +2644,15 @@ static struct parm_struct parm_table[] = {
.flags = FLAG_HIDE,
},
{
+ .label = "spoolss backchannel",
+ .type = P_BOOL,
+ .p_class = P_LOCAL,
+ .ptr = &sDefault.bSpoolssBackchannel,
+ .special = NULL,
+ .enum_list = NULL,
+ .flags = FLAG_ADVANCED,
+ },
+ {
.label = "printing",
.type = P_ENUM,
.p_class = P_LOCAL,
@@ -5665,6 +5676,7 @@ FN_LOCAL_BOOL(lp_guest_ok, bGuest_ok)
FN_LOCAL_BOOL(lp_guest_only, bGuest_only)
FN_LOCAL_BOOL(lp_administrative_share, bAdministrative_share)
FN_LOCAL_BOOL(lp_print_ok, bPrint_ok)
+FN_LOCAL_BOOL(lp_spoolss_backchannel, bSpoolssBackchannel)
FN_LOCAL_BOOL(lp_map_hidden, bMap_hidden)
FN_LOCAL_BOOL(lp_map_archive, bMap_archive)
FN_LOCAL_BOOL(lp_store_dos_attributes, bStoreDosAttributes)
diff --git a/source3/rpc_server/srv_spoolss_nt.c
b/source3/rpc_server/srv_spoolss_nt.c
index afc27fe..5fb00d0 100644
--- a/source3/rpc_server/srv_spoolss_nt.c
+++ b/source3/rpc_server/srv_spoolss_nt.c
@@ -2617,6 +2617,12 @@ WERROR
_spoolss_RemoteFindFirstPrinterChangeNotifyEx(pipes_struct *p,
return WERR_SERVER_UNAVAILABLE;
}
+ if (!lp_spoolss_backchannel(snum)) {
+ DEBUG(10, ("_spoolss_RemoteFindFirstPrinterChangeNotifyEx: "
+ "backchannel disabled\n"));
+ return WERR_SERVER_UNAVAILABLE;
+ }
+
if (!interpret_string_addr(&client_ss, p->client_address,
AI_NUMERICHOST)) {
return WERR_SERVER_UNAVAILABLE;
--
1.7.0.4