/********************************************************************
* FUNCTION check_manager_hello
*
* Verify that the same NETCONF protocol verion is supported
* by the manager and this server
*
* INPUTS:
* scb == session control block
* val == value struct for the hello message to check
*
* RETURNS:
* status
*********************************************************************/
static status_t
check_manager_hello (ses_cb_t *scb,
val_value_t *val)
{
val_value_t *caps, *cap;
/* look for the NETCONF base capability string */
caps = val_find_child(val, NC_MODULE, NCX_EL_CAPABILITIES);
if (caps && caps->res == NO_ERR) {
if (ncx_protocol_enabled(NCX_PROTO_NETCONF11)) {
for (cap = val_find_child(caps, NC_MODULE, NCX_EL_CAPABILITY);
cap != NULL;
cap = val_find_next_child(caps, NC_MODULE,
NCX_EL_CAPABILITY, cap)) {
if (cap->res == NO_ERR) {
if (!xml_strcmp(VAL_STR(cap), CAP_BASE_URN11)) {
if (LOGDEBUG3) {
log_debug3("\nagt_hello: set "
"protocol to base:1.1");
}
return ses_set_protocol(scb, NCX_PROTO_NETCONF11);
}
}
}
}
if (ncx_protocol_enabled(NCX_PROTO_NETCONF10)) {
for (cap = val_find_child(caps, NC_MODULE, NCX_EL_CAPABILITY);
cap != NULL;
cap = val_find_next_child(caps, NC_MODULE,
NCX_EL_CAPABILITY, cap)) {
if (cap->res == NO_ERR) {
if (!xml_strcmp(VAL_STR(cap), CAP_BASE_URN)) {
if (LOGDEBUG3) {
log_debug3("\nagt_hello: set "
"protocol to base:1.0");
}
return ses_set_protocol(scb, NCX_PROTO_NETCONF10);
}
}
}
}
}
log_info("\nagt_hello: no NETCONF base:1.0 or base:1.1 URI found");
return ERR_NCX_MISSING_VAL_INST;
} /* check_manager_hello */
/********************************************************************
* FUNCTION process_server_hello
*
* Process the NETCONF server <hello> contents
*
* 1) Protocol capabilities
* 2) Module capabilities
* 3) Unrecognized capabilities
*
* INPUTS:
* scb == session control block to set
* hello == value struct for the hello message to check
*
* OUTPUTS:
* server caps in the scb->mgrcb is set
*
* RETURNS:
* status
*********************************************************************/
static status_t
process_server_hello (ses_cb_t *scb,
val_value_t *hello)
{
val_value_t *caps, *sidval, *cap;
mgr_scb_t *mscb;
boolean c1, c2;
status_t res;
mscb = mgr_ses_get_mscb(scb);
/* make sure the capabilities element is present
* This should not fail, since already parsed this far
*/
caps = val_find_child(hello, NC_MODULE, NCX_EL_CAPABILITIES);
if (!caps || caps->res != NO_ERR) {
log_error("\nError: no <capabilities> found in server <hello>");
return ERR_NCX_MISSING_VAL_INST;
}
/* make sure the session-id element is present
* This should not fail, since already parsed this far
*/
sidval = val_find_child(hello, NC_MODULE, NCX_EL_SESSION_ID);
if (!sidval || sidval->res != NO_ERR) {
log_error("\nError: no <session-id> found in server <hello>");
return ERR_NCX_MISSING_VAL_INST;
} else {
mscb->agtsid = VAL_UINT(sidval);
}
/* go through the capability nodes and construct a caplist */
for (cap = val_find_child(caps, NC_MODULE, NCX_EL_CAPABILITY);
cap != NULL;
cap = val_find_next_child(caps,
NC_MODULE,
NCX_EL_CAPABILITY,
cap)) {
if (cap->res != NO_ERR) {
continue;
}
res = cap_add_std_string(&mscb->caplist, VAL_STR(cap));
if (res == ERR_NCX_SKIPPED) {
res = cap_add_module_string(&mscb->caplist, VAL_STR(cap));
if (res == ERR_NCX_SKIPPED) {
/*
* if (ncx_warning_enabled(ERR_NCX_RCV_UNKNOWN_CAP)) {
* log_warn("\nWarning: received unknown capability '%s'",
* VAL_STR(cap));
* }
*/
if (LOGDEBUG2) {
log_debug2("\nmgr: Got enterprise capability %s",
VAL_STR(cap));
}
/* hack: check for juniper 1.0 server
* change the useprefix mode to TRUE to get
* <rpc> operations to work with this server
*/
if (!xml_strcmp(VAL_STR(cap), CAP_JUNOS)) {
if (LOGDEBUG) {
log_debug("\nUsing XML prefixes to work "
"with Junos 1.0 server\n");
}
ncx_set_useprefix(TRUE);
}
res = cap_add_ent(&mscb->caplist, VAL_STR(cap));
if (res != NO_ERR) {
return res;
}
}
}
}
/* check if the mandatory base protocol capability was set */
res = NO_ERR;
c1 = cap_std_set(&mscb->caplist, CAP_STDID_V1);
c2 = cap_std_set(&mscb->caplist, CAP_STDID_V11);
if (c1 && c2) {
if (LOGDEBUG2) {
log_debug2("\nmgr_hello: server supports "
"base:1.0 and base:1.1");
}
if (ses_protocol_requested(scb, NCX_PROTO_NETCONF11)) {
if (LOGDEBUG2) {
log_debug2("\nmgr_hello: set protocol to base:1.1 "
"for session '%d'",
scb->sid);
}
ses_set_protocol(scb, NCX_PROTO_NETCONF11);
} else if (ses_protocol_requested(scb, NCX_PROTO_NETCONF10)) {
if (LOGDEBUG2) {
log_debug2("\nmgr_hello: set protocol to base:1.0 "
"for session '%d'",
scb->sid);
}
ses_set_protocol(scb, NCX_PROTO_NETCONF10);
} else {
log_error("\nError: Internal: no protocols requested, "
"dropping session '%d'",
scb->sid);
res = ERR_NCX_MISSING_VAL_INST;
}
} else if (c1) {
if (LOGDEBUG2) {
log_debug2("\nmgr_hello: server supports "
"base:1.0 only");
}
if (ses_protocol_requested(scb, NCX_PROTO_NETCONF10)) {
if (LOGDEBUG2) {
log_debug2("\nmgr_hello: set protocol to base:1.0 "
"for session '%d'",
scb->sid);
}
ses_set_protocol(scb, NCX_PROTO_NETCONF10);
} else {
log_error("\nError: Server supports base:1.0 only;"
"\n Protocol 'netconf1.0' not enabled, "
"dropping session '%d'",
scb->sid);
res = ERR_NCX_MISSING_VAL_INST;
}
} else if (c2) {
if (LOGDEBUG2) {
log_debug2("\nmgr_hello: server supports "
"base:1.1 only");
}
if (ses_protocol_requested(scb, NCX_PROTO_NETCONF11)) {
if (LOGDEBUG2) {
log_debug2("\nmgr_hello: set protocol to base:1.1 "
"for session '%d'",
scb->sid);
}
ses_set_protocol(scb, NCX_PROTO_NETCONF11);
} else {
log_error("\nError: Server supports base:1.1 only;"
"\n Protocol 'netconf1.1' not enabled, "
"dropping session '%d'",
scb->sid);
res = ERR_NCX_MISSING_VAL_INST;
}
} else {
log_error("\nError: no support for base:1.0 "
"or base:1.1 found in server <hello>;"
"\n dropping session '%d'",
scb->sid);
return ERR_NCX_MISSING_VAL_INST;
}
/* set target type var in the manager session control block */
c1 = cap_std_set(&mscb->caplist, CAP_STDID_WRITE_RUNNING);
c2 = cap_std_set(&mscb->caplist, CAP_STDID_CANDIDATE);
if (c1 && c2) {
mscb->targtyp = NCX_AGT_TARG_CAND_RUNNING;
} else if (c1) {
mscb->targtyp = NCX_AGT_TARG_RUNNING;
} else if (c2) {
mscb->targtyp = NCX_AGT_TARG_CANDIDATE;
} else {
mscb->targtyp = NCX_AGT_TARG_NONE;
if (LOGINFO) {
log_info("\nmgr_hello: no writable target found for"
" session %u (a:%u)",
scb->sid,
mscb->agtsid);
}
}
/* set the startup type in the mscb */
if (cap_std_set(&mscb->caplist, CAP_STDID_STARTUP)) {
mscb->starttyp = NCX_AGT_START_DISTINCT;
} else {
mscb->starttyp = NCX_AGT_START_MIRROR;
}
return NO_ERR;
} /* process_server_hello */
