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Moved message encoding/decoding to message.c

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This commit is contained in:
7u83 2022-08-15 21:14:01 +02:00
parent a051ba41de
commit be210692c6
7 changed files with 26 additions and 155 deletions
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3
src/cw/Makefile
View File

@ -181,7 +181,6 @@ MISCSRC=\
conn_create_noq.c\
connlist.c\
conn_prepare_image_data_request.c\
cw_decode_msg.c \
conn_q_add_packet.c\
conn_q_get_packet.c\
conn_q_recv_packet.c\
@ -204,6 +203,8 @@ MISCSRC=\
conn.c \
val.c \
discovery.c\
message.c\
# conn_q_wait_packet.c\

2
src/cw/conn.c
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@ -378,7 +378,7 @@ int cw_send_response(struct cw_Conn *conn, uint8_t * rawmsg, int len)
{
int rc;
cw_init_response(conn, rawmsg);
rc = cw_assemble_message(conn, conn->resp_buffer);
rc = cw_compose_message(conn, conn->resp_buffer);
if (!cw_result_is_ok(rc))
return 0;
conn_send_msg(conn, conn->resp_buffer);

17
src/cw/cw.c
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@ -134,3 +134,20 @@ int cw_out_radio_generic(struct cw_ElemHandler * handler, struct cw_ElemHandlerP
return len;
}
int cw_write_header(struct cw_ElemHandler * handler, uint8_t * dst, int len)
{
if (handler->vendor)
return len + cw_put_elem_vendor_hdr(dst, handler->vendor, handler->id, len);
return len + cw_put_elem_hdr(dst, handler->id, len);
}
int cw_header_len(struct cw_ElemHandler * handler)
{
return handler->vendor ? 10 : 4;
}

3
src/cw/cw.h
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@ -550,6 +550,9 @@ int cw_stricmp(char const *a, char const *b);
int cw_write_header(struct cw_ElemHandler * handler, uint8_t * dst, int len);
int cw_header_len(struct cw_ElemHandler * handler);
int cw_compose_message(struct cw_Conn *conn, uint8_t * rawout);
/**
*@}
*/

127
src/cw/cw_decode_msg.c
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@ -1,127 +0,0 @@
#include "cw.h"
#include "dbg.h"
#include "log.h"
#include "msgset.h"
int cw_decode_element(struct cw_ElemHandlerParams *params, int proto,
int vendor, int elem_id, uint8_t * data, int len)
{
struct cw_ElemHandler *handler;
struct cw_ElemData *elem_data, elem_data_search;
int rc;
//params->elem = NULL;
/* try to retrieve a handler for this message element */
handler =
cw_msgset_get_elemhandler(params->msgset, proto, vendor,
elem_id);
if (!handler) {
cw_dbg(DBG_ELEM_ERR,
"Unrecognized message element: %d, ignoring", elem_id);
return CAPWAP_RESULT_UNRECOGNIZED_MESSAGE_ELEMENT;
}
/* check if this message element in the current message allowed */
elem_data_search.id = elem_id;
elem_data_search.proto = proto;
elem_data_search.vendor = vendor;
elem_data = mavl_get(params->msgdata->elements_tree, &elem_data_search);
if (!elem_data) {
cw_dbg(DBG_ELEM_ERR, "Element %d - %s, not allowed here",
elem_id, handler->name);
return CAPWAP_RESULT_UNRECOGNIZED_MESSAGE_ELEMENT;
}
/* check the length of the message */
if (len < handler->min_len) {
cw_dbg(DBG_ELEM_ERR,
"%d (%s) message element too short, len=%d, min len=%d",
handler->id, handler->name, len, handler->min_len);
return -1;
}
if (elem_data->mand) {
mavl_add_str(params->mand_found, handler->key);
}
if (len > handler->max_len && handler->max_len) {
cw_dbg(DBG_ELEM_ERR,
"%d (%s) message element too big, len=%d, max len=%d",
handler->id, handler->name, len, handler->max_len);
/* TODO XXX truncate the element instead of return */
return -1;
}
cw_dbg_elem(DBG_ELEM_IN, NULL, params->msgdata->type, handler,
data, len);
if (handler->get == NULL) {
cw_log(LOG_ERR, "No get method defined for %d %s", handler->id,
handler->name);
return CAPWAP_RESULT_UNRECOGNIZED_MESSAGE_ELEMENT;
}
rc = handler->get(handler, params, data, len);
return rc;
}
int cw_decode_elements(struct cw_ElemHandlerParams * params, uint8_t * elems_ptr, int elems_len)
{
uint8_t *elem;
mavl_t mand_found;
mlist_t unrecognized;
mand_found = mavl_create_conststr();
unrecognized = mlist_create(NULL,NULL,sizeof(uint8_t*));
cw_foreach_elem(elem, elems_ptr, elems_len) {
int rc;
int elem_len, elem_id, max_len;
uint8_t * elem_data;
elem_len = cw_get_elem_len(elem);
elem_data=cw_get_elem_data(elem);
elem_id = cw_get_elem_id(elem);
max_len=elems_len-(elem_data-elems_ptr);
if (elem_len > max_len){
cw_dbg(DBG_RFC,
"Messag element claims size of %d bytes, but only %d bytes are left in the payload, truncating.",
elem_len,max_len-4);
}
params->from=NULL; /*from;*/
params->mand_found=mand_found;
rc = cw_decode_element(params,0,0,elem_id,elem_data,elem_len);
if (cw_result_is_ok(rc))
continue;
if (rc == CAPWAP_RESULT_UNRECOGNIZED_MESSAGE_ELEMENT){
mlist_append(unrecognized,&elem);
continue;
}
if (rc < 0 ){
continue;
}
}
mavl_destroy(mand_found);
mlist_destroy(unrecognized);
return 0;
}

20
src/cw/cw_write_header.c
View File

@ -1,20 +0,0 @@
#include "conn.h"
#include "msgset.h"
#include "cw.h"
int cw_write_header(struct cw_ElemHandler * handler, uint8_t * dst, int len)
{
if (handler->vendor)
return len + cw_put_elem_vendor_hdr(dst, handler->vendor, handler->id, len);
return len + cw_put_elem_hdr(dst, handler->id, len);
}
int cw_header_len(struct cw_ElemHandler * handler)
{
return handler->vendor ? 10 : 4;
}

9
src/wtp/wtp_main.c
View File

@ -186,16 +186,13 @@ int main (int argc, char **argv)
join(conn,results);
cw_discovery_results_destroy(results);
printf("JOIN CONF\n");
rc = 0;
printf("Goto errx 0");
goto errX;
// clean_cfg(conn->remote_cfg);
// mavl_merge(conn->local_cfg,conn->remote_cfg);
mavl_del_all(conn->remote_cfg);
printf("JOIN CONF\n");
configure(conn);
clean_cfg(conn->remote_cfg);
mavl_merge(conn->local_cfg,conn->remote_cfg);