experiments/clixon
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Remove propriatary internal framing functions

Browse source 
Changed send/rcv API using NETCONF 10 and 11 suffixes
This commit is contained in:
Olof hagsand 2024-02-28 13:25:10 +01:00
parent 5fa82dcea7
commit 520f8a9a42
6 changed files with 53 additions and 64 deletions
Download patch file Download diff file Expand all files Collapse all files

8
CHANGELOG.md
View file

@ -14,6 +14,7 @@ Expected: March 2024
### Minor features
* Changed framing between backend and frontend to RFC6242 "chunked-encoding"
* Previous a propriatary framing method was used
* Added micro-second resolution to logs via stderr/stdout
* New command-line debug mechanism
* Separation between subject-area and details
@ -56,6 +57,13 @@ Users may have to change how they access the system
### C/CLI-API changes on existing features
Developers may need to change their code
* Modified msg functions for clearer NETCONF 1.0 vs 1.1 API:
* `clicon_rpc1` --> `clixon_rpc10`
* `clicon_msg_send1` --> `clixon_msg_send10`
* `clicon_msg_rcv` and `clicon_msg_decode` --> `clixon_msg_rcv11`
* Rewrite by calling `clixon_msg_rcv11` and explicit xml parsing
* `clicon_msg_rcv1` --> `clixon_msg_rcv10`
* Added `yspec` parameter to `api_path_fmt2api_path()`:
* `api_path_fmt2api_path(af, c, a, c)` --> `api_path_fmt2api_path(af, c, yspec, a, c)`
* Added flags parameter to default functions:

21
apps/backend/backend_client.c
View file

@ -1560,7 +1560,7 @@ from_client_hello(clixon_handle h,
static int
from_client_msg(clixon_handle h,
struct client_entry *ce,
struct clicon_msg *msg)
char *msg)
{
int retval = -1;
cxobj *xt = NULL;
@ -1576,7 +1576,7 @@ from_client_msg(clixon_handle h,
yang_stmt *ymod;
cxobj *xnacm = NULL;
cxobj *xret = NULL;
uint32_t op_id; /* session number from internal NETCONF protocol */
uint32_t op_id = 0; /* XXX session number from internal NETCONF protocol */
enum nacm_credentials_t creds;
char *rpcname;
char *rpcprefix;
@ -1596,10 +1596,10 @@ from_client_msg(clixon_handle h,
/* Decode msg from client -> xml top (ct) and session id
* Bind is a part of the decode function
*/
if ((ret = clicon_msg_decode(msg, yspec, &op_id, &xt, &xret)) < 0){
if ((ret = clixon_xml_parse_string(msg, YB_RPC, yspec, &xt, &xret)) < 0){
if (netconf_malformed_message(cbret, "XML parse error") < 0)
goto done;
goto reply;
goto done;
}
if (ret == 0){
if (clixon_xml2cbuf(cbret, xret, 0, 0, NULL, -1, 0) < 0)
@ -1847,11 +1847,11 @@ from_client(int s,
void* arg)
{
int retval = -1;
struct clicon_msg *msg = NULL;
struct client_entry *ce = (struct client_entry *)arg;
clixon_handle h = ce->ce_handle;
int eof = 0;
cbuf *cbce = NULL;
cbuf *cb = NULL;
clixon_debug(CLIXON_DBG_BACKEND | CLIXON_DBG_DETAIL, "");
if (s != ce->ce_s){
@ -1860,22 +1860,21 @@ from_client(int s,
}
if (ce_client_descr(ce, &cbce) < 0)
goto done;
if (clicon_msg_rcv(ce->ce_s, cbuf_get(cbce), 0, &msg, &eof) < 0)
if (clixon_msg_rcv11(s, NULL, &cb, &eof) < 0)
goto done;
if (eof){
backend_client_rm(h, ce);
netconf_monitoring_counter_inc(h, "dropped-sessions");
}
else
if (from_client_msg(h, ce, msg) < 0)
goto done;
else if (from_client_msg(h, ce, cbuf_get(cb)) < 0)
goto done;
retval = 0;
done:
clixon_debug(CLIXON_DBG_BACKEND | CLIXON_DBG_DETAIL, "retval:%d", retval);
if (cb)
cbuf_free(cb);
if (cbce)
cbuf_free(cbce);
if (msg)
free(msg);
return retval; /* -1 here terminates backend */
}

19
apps/cli/cli_common.c
View file

@ -1403,14 +1403,12 @@ cli_notification_cb(int s,
void *arg)
{
int retval = -1;
struct clicon_msg *reply = NULL;
int eof;
int eof = 0;
cxobj *xt = NULL;
enum format_enum format = (enum format_enum)(uintptr_t)arg;
int ret;
cbuf *cb = NULL;
/* get msg (this is the reason this function is called) */
if (clicon_msg_rcv(s, NULL, 0, &reply, &eof) < 0)
if (clixon_msg_rcv11(s, NULL, &cb, &eof) < 0)
goto done;
if (eof){
clixon_err(OE_PROTO, ESHUTDOWN, "Socket unexpected close");
@ -1419,13 +1417,8 @@ cli_notification_cb(int s,
clixon_event_unreg_fd(s, cli_notification_cb);
goto done;
}
/* XXX pass yang_spec and use xerr*/
if ((ret = clicon_msg_decode(reply, NULL, NULL, &xt, NULL)) < 0)
if (clixon_xml_parse_string(cbuf_get(cb), YB_NONE, NULL, &xt, NULL) < 0)
goto done;
if (ret == 0){ /* will not happen since no yspec ^*/
clixon_err(OE_NETCONF, EFAULT, "Notification malformed");
goto done;
}
switch (format){
case FORMAT_JSON:
if (clixon_json2file(stdout, xt, 1, cligen_output, 1, 1) < 0)
@ -1443,10 +1436,10 @@ cli_notification_cb(int s,
}
retval = 0;
done:
if (cb)
cbuf_free(cb);
if (xt)
xml_free(xt);
if (reply)
free(reply);
return retval;
}

33
apps/netconf/netconf_rpc.c
View file

@ -447,21 +447,21 @@ static int
netconf_notification_cb(int s,
void *arg)
{
struct clicon_msg *reply = NULL;
int eof;
int retval = -1;
cbuf *cb = NULL;
cxobj *xn = NULL; /* event xml */
cxobj *xt = NULL; /* top xml */
clixon_handle h = (clixon_handle)arg;
yang_stmt *yspec = NULL;
cvec *nsc = NULL;
int ret;
cxobj *xerr = NULL;
int eof;
int retval = -1;
cbuf *cb = NULL;
cxobj *xn = NULL; /* event xml */
cxobj *xt = NULL; /* top xml */
clixon_handle h = (clixon_handle)arg;
yang_stmt *yspec = NULL;
cvec *nsc = NULL;
int ret;
cxobj *xerr = NULL;
cbuf *cbmsg = NULL;
clixon_debug(CLIXON_DBG_NETCONF, "");
/* get msg (this is the reason this function is called) */
if (clicon_msg_rcv(s, NULL, 0, &reply, &eof) < 0)
yspec = clicon_dbspec_yang(h);
if (clixon_msg_rcv11(s, NULL, &cbmsg, &eof) < 0)
goto done;
/* handle close from remote end: this will exit the client */
if (eof){
@ -471,8 +471,7 @@ netconf_notification_cb(int s,
clixon_event_unreg_fd(s, netconf_notification_cb);
goto done;
}
yspec = clicon_dbspec_yang(h);
if ((ret = clicon_msg_decode(reply, yspec, NULL, &xt, &xerr)) < 0)
if ((ret = clixon_xml_parse_string(cbuf_get(cbmsg), YB_RPC, yspec, &xt, &xerr)) < 0)
goto done;
if (ret == 0){ /* XXX use xerr */
clixon_err(OE_NETCONF, EFAULT, "Notification malformed");
@ -513,8 +512,8 @@ netconf_notification_cb(int s,
xml_free(xt);
if (xerr != NULL)
xml_free(xerr);
if (reply)
free(reply);
if (cbmsg)
free(cbmsg);
return retval;
}

27
apps/restconf/restconf_stream_fcgi.c
View file

@ -205,22 +205,19 @@ static int
restconf_stream_cb(int s,
void *arg)
{
int retval = -1;
FCGX_Request *r = (FCGX_Request *)arg;
int eof;
struct clicon_msg *reply = NULL;
cxobj *xtop = NULL; /* top xml */
cxobj *xn; /* notification xml */
cbuf *cb = NULL;
int pretty = 0; /* XXX should be via arg */
int ret;
int retval = -1;
FCGX_Request *r = (FCGX_Request *)arg;
int eof;
cxobj *xtop = NULL; /* top xml */
cxobj *xn; /* notification xml */
cbuf *cb = NULL;
int pretty = 0; /* XXX should be via arg */
cbuf *cbmsg = NULL;
int ret;
clixon_debug(CLIXON_DBG_STREAM, "");
/* get msg (this is the reason this function is called) */
if (clicon_msg_rcv(s, NULL, 0, &reply, &eof) < 0){
clixon_debug(CLIXON_DBG_STREAM, "msg_rcv error");
if (clixon_msg_rcv11(s, NULL, &cbmsg, &eof) < 0)
goto done;
}
clixon_debug(CLIXON_DBG_STREAM, "msg: %s", reply?reply->op_body:"null");
/* handle close from remote end: this will exit the client */
if (eof){
@ -233,7 +230,7 @@ restconf_stream_cb(int s,
clixon_exit_set(1);
goto done;
}
if ((ret = clicon_msg_decode(reply, NULL, NULL, &xtop, NULL)) < 0) /* XXX pass yang_spec */
if ((ret = clixon_xml_parse_string(cbuf_get(cbmsg), YB_NONE, NULL, &xt, NULL)) < 0)
goto done;
if (ret == 0){
clixon_err(OE_XML, EFAULT, "Invalid notification");
@ -271,6 +268,8 @@ restconf_stream_cb(int s,
xml_free(xtop);
if (reply)
free(reply);
if (cbmsg)
cbuf_free(cbmsg);
if (cb)
cbuf_free(cb);
return retval;

9
include/clixon_custom.h
View file

@ -206,12 +206,3 @@
*/
#define COMPAT_6_5
/*! Use 1.1 RFC 6242 chunked encoding framing for internal use
*
* Replaces internal IPC
* clixon_msg_send2() an clixon_msg_rcv2() and some adjustment code in clixon_proto.c
* Following things NYI:
* - Emulates old clicon_msg API
*/
#define NETCONF_INPUT_UNIFIED_INTERNAL