101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
#include "components/elaphureLink/elaphureLink_protocol.h"
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#include "main/DAP_handle.h"
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#include "lwip/err.h"
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#include "lwip/sockets.h"
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#include "lwip/sys.h"
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#include <lwip/netdb.h>
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extern int kRestartDAPHandle;
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extern int kSock;
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extern int usbip_network_send(int s, const void *dataptr, size_t size, int flags);
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extern void malloc_dap_ringbuf();
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extern void free_dap_ringbuf();
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extern uint32_t DAP_ExecuteCommand(const uint8_t *request, uint8_t *response);
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uint8_t* el_process_buffer = NULL;
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void el_process_buffer_malloc() {
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if (el_process_buffer != NULL)
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return;
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free_dap_ringbuf();
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el_process_buffer = malloc(1500);
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}
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void el_process_buffer_free() {
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if (el_process_buffer != NULL) {
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free(el_process_buffer);
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el_process_buffer = NULL;
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}
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}
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int el_handshake_process(int fd, void *buffer, size_t len) {
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if (len != sizeof(el_request_handshake)) {
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return -1;
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}
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el_request_handshake* req = (el_request_handshake*)buffer;
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if (ntohl(req->el_link_identifier) != EL_LINK_IDENTIFIER) {
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return -1;
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}
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if (ntohl(req->command) != EL_COMMAND_HANDSHAKE) {
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return -1;
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}
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el_response_handshake res;
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res.el_link_identifier = htonl(EL_LINK_IDENTIFIER);
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res.command = htonl(EL_COMMAND_HANDSHAKE);
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res.el_dap_version = htonl(EL_DAP_VERSION);
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usbip_network_send(fd, &res, sizeof(el_response_handshake), 0);
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return 0;
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}
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void el_dap_data_process(void* buffer, size_t len) {
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int res = DAP_ExecuteCommand(buffer, (uint8_t *)el_process_buffer);
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res &= 0xFFFF;
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usbip_network_send(kSock, el_process_buffer, res, 0);
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}
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int el_dap_work(uint8_t* base, size_t len)
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{
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uint8_t *data;
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int sz, ret;
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// read command code and protocol version
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data = base + 4;
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sz = 8;
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do {
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ret = recv(kSock, data, sz, 0);
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if (ret <= 0)
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return ret;
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sz -= ret;
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data += ret;
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} while (sz > 0);
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ret = el_handshake_process(kSock, base, 12);
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if (ret)
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return ret;
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kRestartDAPHandle = DELETE_HANDLE;
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el_process_buffer_malloc();
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// data process
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while(1) {
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ret = recv(kSock, base, len, 0);
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if (ret <= 0)
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return ret;
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el_dap_data_process(base, ret);
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}
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return 0;
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}
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