mirror of
https://github.com/lwip-tcpip/lwip.git
synced 2024-12-25 00:14:02 +00:00
tftp: Add client functionality
* add helper functions * add tftp_get/tftp_put * rename files
This commit is contained in:
parent
c683427bfd
commit
b2713601f0
@ -182,8 +182,8 @@ MDNSFILES=$(LWIPDIR)/apps/mdns/mdns.c
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# NETBIOSNSFILES: NetBIOS name server
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# NETBIOSNSFILES: NetBIOS name server
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NETBIOSNSFILES=$(LWIPDIR)/apps/netbiosns/netbiosns.c
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NETBIOSNSFILES=$(LWIPDIR)/apps/netbiosns/netbiosns.c
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# TFTPFILES: TFTP server files
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# TFTPFILES: TFTP client/server files
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TFTPFILES=$(LWIPDIR)/apps/tftp/tftp_server.c
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TFTPFILES=$(LWIPDIR)/apps/tftp/tftp_common.c
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# MQTTFILES: MQTT client files
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# MQTTFILES: MQTT client files
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MQTTFILES=$(LWIPDIR)/apps/mqtt/mqtt.c
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MQTTFILES=$(LWIPDIR)/apps/mqtt/mqtt.c
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@ -1,6 +1,6 @@
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/**
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/**
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*
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*
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* @file tftp_server.c
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* @file tftp_common.c
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*
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*
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* @author Logan Gunthorpe <logang@deltatee.com>
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* @author Logan Gunthorpe <logang@deltatee.com>
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* Dirk Ziegelmeier <dziegel@gmx.de>
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* Dirk Ziegelmeier <dziegel@gmx.de>
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@ -41,13 +41,13 @@
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*/
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*/
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/**
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/**
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* @defgroup tftp TFTP server
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* @defgroup tftp TFTP client/server
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* @ingroup apps
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* @ingroup apps
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*
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*
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* This is simple TFTP server for the lwIP raw API.
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* This is simple TFTP client/server for the lwIP raw API.
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*/
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*/
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#include "lwip/apps/tftp_server.h"
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#include "lwip/apps/tftp_common.h"
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#if LWIP_UDP
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#if LWIP_UDP
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@ -114,6 +114,40 @@ close_handle(void)
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}
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}
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}
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}
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static struct pbuf*
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init_packet(int opcode, int extra, int size)
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{
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struct pbuf* p = pbuf_alloc(PBUF_TRANSPORT, (u16_t)(TFTP_HEADER_LENGTH + size), PBUF_RAM);
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u16_t* payload;
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if(p != NULL) {
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payload = (u16_t*) p->payload;
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payload[0] = PP_HTONS(opcode);
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payload[1] = lwip_htons(extra);
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}
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return p;
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}
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static void
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send_request(const ip_addr_t *addr, u16_t port, int opcode, const char* fname, const char* mode) {
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size_t fname_length = strlen(fname)+1;
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size_t mode_length = strlen(mode)+1;
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struct pbuf* p = init_packet(opcode, 0, -2 + fname_length + mode_length);
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char* payload;
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if(p == NULL) {
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return;
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}
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payload = (char*) p->payload;
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MEMCPY(payload+2, fname, fname_length);
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MEMCPY(payload+2+fname_length, mode, mode_length);
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udp_sendto(tftp_state.upcb, p, addr, port);
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pbuf_free(p);
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}
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static void
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static void
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send_error(const ip_addr_t *addr, u16_t port, enum tftp_error code, const char *str)
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send_error(const ip_addr_t *addr, u16_t port, enum tftp_error code, const char *str)
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{
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{
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@ -121,14 +155,12 @@ send_error(const ip_addr_t *addr, u16_t port, enum tftp_error code, const char *
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struct pbuf *p;
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struct pbuf *p;
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u16_t *payload;
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u16_t *payload;
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p = pbuf_alloc(PBUF_TRANSPORT, (u16_t)(TFTP_HEADER_LENGTH + str_length + 1), PBUF_RAM);
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p = init_packet(TFTP_ERROR, code, str_length + 1);
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if (p == NULL) {
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if (p == NULL) {
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return;
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return;
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}
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}
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payload = (u16_t *) p->payload;
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payload = (u16_t *) p->payload;
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payload[0] = PP_HTONS(TFTP_ERROR);
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payload[1] = lwip_htons(code);
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MEMCPY(&payload[2], str, str_length + 1);
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MEMCPY(&payload[2], str, str_length + 1);
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udp_sendto(tftp_state.upcb, p, addr, port);
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udp_sendto(tftp_state.upcb, p, addr, port);
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@ -136,25 +168,21 @@ send_error(const ip_addr_t *addr, u16_t port, enum tftp_error code, const char *
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}
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}
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static void
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static void
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send_ack(u16_t blknum)
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send_ack(const ip_addr_t *addr, u16_t port, u16_t blknum)
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{
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{
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struct pbuf *p;
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struct pbuf *p;
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u16_t *payload;
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p = pbuf_alloc(PBUF_TRANSPORT, TFTP_HEADER_LENGTH, PBUF_RAM);
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p = init_packet(TFTP_ACK, blknum, 0);
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if (p == NULL) {
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if (p == NULL) {
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return;
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return;
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}
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}
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payload = (u16_t *) p->payload;
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payload[0] = PP_HTONS(TFTP_ACK);
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udp_sendto(tftp_state.upcb, p, addr, port);
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payload[1] = lwip_htons(blknum);
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udp_sendto(tftp_state.upcb, p, &tftp_state.addr, tftp_state.port);
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pbuf_free(p);
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pbuf_free(p);
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}
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}
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static void
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static void
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resend_data(void)
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resend_data(const ip_addr_t *addr, u16_t port)
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{
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{
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struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, tftp_state.last_data->len, PBUF_RAM);
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struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, tftp_state.last_data->len, PBUF_RAM);
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if (p == NULL) {
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if (p == NULL) {
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@ -166,12 +194,12 @@ resend_data(void)
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return;
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return;
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}
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}
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udp_sendto(tftp_state.upcb, p, &tftp_state.addr, tftp_state.port);
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udp_sendto(tftp_state.upcb, p, addr, port);
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pbuf_free(p);
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pbuf_free(p);
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}
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}
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static void
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static void
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send_data(void)
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send_data(const ip_addr_t *addr, u16_t port)
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{
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{
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u16_t *payload;
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u16_t *payload;
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int ret;
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int ret;
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@ -180,24 +208,22 @@ send_data(void)
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pbuf_free(tftp_state.last_data);
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pbuf_free(tftp_state.last_data);
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}
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}
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tftp_state.last_data = pbuf_alloc(PBUF_TRANSPORT, TFTP_HEADER_LENGTH + TFTP_MAX_PAYLOAD_SIZE, PBUF_RAM);
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tftp_state.last_data = init_packet(TFTP_DATA, tftp_state.blknum, TFTP_MAX_PAYLOAD_SIZE);
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if (tftp_state.last_data == NULL) {
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if (tftp_state.last_data == NULL) {
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return;
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return;
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}
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}
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payload = (u16_t *) tftp_state.last_data->payload;
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payload = (u16_t *) tftp_state.last_data->payload;
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payload[0] = PP_HTONS(TFTP_DATA);
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payload[1] = lwip_htons(tftp_state.blknum);
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ret = tftp_state.ctx->read(tftp_state.handle, &payload[2], TFTP_MAX_PAYLOAD_SIZE);
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ret = tftp_state.ctx->read(tftp_state.handle, &payload[2], TFTP_MAX_PAYLOAD_SIZE);
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if (ret < 0) {
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if (ret < 0) {
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send_error(&tftp_state.addr, tftp_state.port, TFTP_ERROR_ACCESS_VIOLATION, "Error occured while reading the file.");
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send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "Error occured while reading the file.");
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close_handle();
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close_handle();
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return;
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return;
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}
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}
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pbuf_realloc(tftp_state.last_data, (u16_t)(TFTP_HEADER_LENGTH + ret));
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pbuf_realloc(tftp_state.last_data, (u16_t)(TFTP_HEADER_LENGTH + ret));
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resend_data();
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resend_data(addr, port);
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}
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}
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static void
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static void
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@ -270,10 +296,10 @@ recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16
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if (opcode == PP_HTONS(TFTP_WRQ)) {
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if (opcode == PP_HTONS(TFTP_WRQ)) {
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tftp_state.mode_write = 1;
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tftp_state.mode_write = 1;
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send_ack(0);
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send_ack(addr, port, 0);
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} else {
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} else {
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tftp_state.mode_write = 0;
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tftp_state.mode_write = 0;
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send_data();
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send_data(addr, port);
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}
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}
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break;
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break;
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@ -302,7 +328,7 @@ recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16
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send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "error writing file");
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send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "error writing file");
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close_handle();
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close_handle();
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} else {
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} else {
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send_ack(blknum);
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send_ack(addr, port, blknum);
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}
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}
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if (p->tot_len < TFTP_MAX_PAYLOAD_SIZE) {
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if (p->tot_len < TFTP_MAX_PAYLOAD_SIZE) {
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@ -312,7 +338,7 @@ recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16
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}
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}
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} else if ((u16_t)(blknum + 1) == tftp_state.blknum) {
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} else if ((u16_t)(blknum + 1) == tftp_state.blknum) {
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/* retransmit of previous block, ack again (casting to u16_t to care for overflow) */
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/* retransmit of previous block, ack again (casting to u16_t to care for overflow) */
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send_ack(blknum);
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send_ack(addr, port, blknum);
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} else {
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} else {
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send_error(addr, port, TFTP_ERROR_UNKNOWN_TRFR_ID, "Wrong block number");
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send_error(addr, port, TFTP_ERROR_UNKNOWN_TRFR_ID, "Wrong block number");
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}
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}
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@ -347,14 +373,20 @@ recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16
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if (!lastpkt) {
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if (!lastpkt) {
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tftp_state.blknum++;
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tftp_state.blknum++;
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send_data();
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send_data(addr, port);
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} else {
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} else {
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close_handle();
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close_handle();
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}
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}
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break;
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break;
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}
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}
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case PP_HTONS(TFTP_ERROR):
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if (tftp_state.handle != NULL) {
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pbuf_remove_header(p, TFTP_HEADER_LENGTH);
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tftp_state.ctx->error(tftp_state.handle, sbuf[1], p->payload, p->len);
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close_handle();
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}
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break;
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default:
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default:
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send_error(addr, port, TFTP_ERROR_ILLEGAL_OPERATION, "Unknown operation");
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send_error(addr, port, TFTP_ERROR_ILLEGAL_OPERATION, "Unknown operation");
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break;
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break;
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@ -379,7 +411,7 @@ tftp_tmr(void *arg)
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if ((tftp_state.timer - tftp_state.last_pkt) > (TFTP_TIMEOUT_MSECS / TFTP_TIMER_MSECS)) {
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if ((tftp_state.timer - tftp_state.last_pkt) > (TFTP_TIMEOUT_MSECS / TFTP_TIMER_MSECS)) {
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if ((tftp_state.last_data != NULL) && (tftp_state.retries < TFTP_MAX_RETRIES)) {
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if ((tftp_state.last_data != NULL) && (tftp_state.retries < TFTP_MAX_RETRIES)) {
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LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: timeout, retrying\n"));
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LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: timeout, retrying\n"));
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resend_data();
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resend_data(&tftp_state.addr, tftp_state.port);
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tftp_state.retries++;
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tftp_state.retries++;
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} else {
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} else {
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LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: timeout\n"));
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LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: timeout\n"));
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@ -389,7 +421,7 @@ tftp_tmr(void *arg)
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}
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}
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/** @ingroup tftp
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/** @ingroup tftp
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* Initialize TFTP server.
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* Initialize TFTP client/server.
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* @param ctx TFTP callback struct
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* @param ctx TFTP callback struct
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*/
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*/
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err_t
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err_t
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@ -422,7 +454,7 @@ tftp_init(const struct tftp_context *ctx)
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}
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}
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/** @ingroup tftp
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/** @ingroup tftp
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* Deinitialize ("turn off") TFTP server.
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* Deinitialize ("turn off") TFTP client/server.
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*/
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*/
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void tftp_cleanup(void)
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void tftp_cleanup(void)
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{
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{
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@ -432,4 +464,22 @@ void tftp_cleanup(void)
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memset(&tftp_state, 0, sizeof(tftp_state));
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memset(&tftp_state, 0, sizeof(tftp_state));
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}
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}
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err_t
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tftp_get(void* handle, const ip_addr_t *addr, u16_t port, const char* fname, const char* mode) {
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tftp_state.handle = handle;
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tftp_state.blknum = 1;
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tftp_state.mode_write = 1; // We want to receive data
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send_request(addr, port, TFTP_RRQ, fname, mode);
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return ERR_OK;
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}
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err_t
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tftp_put(void* handle, const ip_addr_t *addr, u16_t port, const char* fname, const char* mode) {
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tftp_state.handle = handle;
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tftp_state.blknum = 1;
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tftp_state.mode_write = 0; // We want to send data
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send_request(addr, port, TFTP_WRQ, fname, mode);
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return ERR_OK;
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}
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#endif /* LWIP_UDP */
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#endif /* LWIP_UDP */
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40
src/include/lwip/apps/tftp_client.h
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40
src/include/lwip/apps/tftp_client.h
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@ -0,0 +1,40 @@
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/**
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*
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* @file tftp_client.h
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* TFTP client header
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*
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*/
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/*
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* Redistribution and use in source and binary forms, with or without
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* modification,are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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*/
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#ifndef LWIP_HDR_APPS_TFTP_CLIENT_H
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#define LWIP_HDR_APPS_TFTP_CLIENT_H
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#include "lwip/apps/tftp_common.h"
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#endif /* LWIP_HDR_APPS_TFTP_CLIENT_H */
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106
src/include/lwip/apps/tftp_common.h
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106
src/include/lwip/apps/tftp_common.h
Normal file
@ -0,0 +1,106 @@
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/**
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*
|
||||||
|
* @file tftp_common.h
|
||||||
|
*
|
||||||
|
* @author Logan Gunthorpe <logang@deltatee.com>
|
||||||
|
*
|
||||||
|
* @brief Trivial File Transfer Protocol (RFC 1350)
|
||||||
|
*
|
||||||
|
* Copyright (c) Deltatee Enterprises Ltd. 2013
|
||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification,are permitted provided that the following conditions are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above copyright notice,
|
||||||
|
* this list of conditions and the following disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||||
|
* this list of conditions and the following disclaimer in the documentation
|
||||||
|
* and/or other materials provided with the distribution.
|
||||||
|
* 3. The name of the author may not be used to endorse or promote products
|
||||||
|
* derived from this software without specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||||
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||||
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
|
||||||
|
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
||||||
|
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||||
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||||
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||||
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||||
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*
|
||||||
|
* Author: Logan Gunthorpe <logang@deltatee.com>
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef LWIP_HDR_APPS_TFTP_COMMON_H
|
||||||
|
#define LWIP_HDR_APPS_TFTP_COMMON_H
|
||||||
|
|
||||||
|
#include "lwip/apps/tftp_opts.h"
|
||||||
|
#include "lwip/err.h"
|
||||||
|
#include "lwip/pbuf.h"
|
||||||
|
#include "lwip/ip_addr.h"
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
extern "C" {
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/** @ingroup tftp
|
||||||
|
* TFTP context containing callback functions for TFTP transfers
|
||||||
|
*/
|
||||||
|
struct tftp_context {
|
||||||
|
/**
|
||||||
|
* Open file for read/write.
|
||||||
|
* @param fname Filename
|
||||||
|
* @param mode Mode string from TFTP RFC 1350 (netascii, octet, mail)
|
||||||
|
* @param write Flag indicating read (0) or write (!= 0) access
|
||||||
|
* @returns File handle supplied to other functions
|
||||||
|
*/
|
||||||
|
void* (*open)(const char* fname, const char* mode, u8_t write);
|
||||||
|
/**
|
||||||
|
* Close file handle
|
||||||
|
* @param handle File handle returned by open()
|
||||||
|
*/
|
||||||
|
void (*close)(void* handle);
|
||||||
|
/**
|
||||||
|
* Read from file
|
||||||
|
* @param handle File handle returned by open()
|
||||||
|
* @param buf Target buffer to copy read data to
|
||||||
|
* @param bytes Number of bytes to copy to buf
|
||||||
|
* @returns >= 0: Success; < 0: Error
|
||||||
|
*/
|
||||||
|
int (*read)(void* handle, void* buf, int bytes);
|
||||||
|
/**
|
||||||
|
* Write to file
|
||||||
|
* @param handle File handle returned by open()
|
||||||
|
* @param pbuf PBUF adjusted such that payload pointer points
|
||||||
|
* to the beginning of write data. In other words,
|
||||||
|
* TFTP headers are stripped off.
|
||||||
|
* @returns >= 0: Success; < 0: Error
|
||||||
|
*/
|
||||||
|
int (*write)(void* handle, struct pbuf* p);
|
||||||
|
/**
|
||||||
|
* Error response
|
||||||
|
* @param handle File handle set by tftp_get/tftp_put
|
||||||
|
* @param err error code from server
|
||||||
|
* @param msg error message from server
|
||||||
|
* @param size size of msg
|
||||||
|
*/
|
||||||
|
void (*error)(void* handle, int err, const char* msg, int size);
|
||||||
|
};
|
||||||
|
|
||||||
|
err_t tftp_init(const struct tftp_context* ctx);
|
||||||
|
void tftp_cleanup(void);
|
||||||
|
err_t tftp_get(void* handle, const ip_addr_t *addr, u16_t port, const char* fname, const char* mode);
|
||||||
|
err_t tftp_put(void* handle, const ip_addr_t *addr, u16_t port, const char* fname, const char* mode);
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif /* LWIP_HDR_APPS_TFTP_COMMON_H */
|
@ -1,13 +1,7 @@
|
|||||||
/**
|
/**
|
||||||
*
|
*
|
||||||
* @file tftp_server.h
|
* @file tftp_server.h
|
||||||
*
|
* TFTP server header
|
||||||
* @author Logan Gunthorpe <logang@deltatee.com>
|
|
||||||
*
|
|
||||||
* @brief Trivial File Transfer Protocol (RFC 1350)
|
|
||||||
*
|
|
||||||
* Copyright (c) Deltatee Enterprises Ltd. 2013
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
@ -34,62 +28,13 @@
|
|||||||
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
*
|
*
|
||||||
* Author: Logan Gunthorpe <logang@deltatee.com>
|
* This file is part of the lwIP TCP/IP stack.
|
||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#ifndef LWIP_HDR_APPS_TFTP_SERVER_H
|
#ifndef LWIP_HDR_APPS_TFTP_SERVER_H
|
||||||
#define LWIP_HDR_APPS_TFTP_SERVER_H
|
#define LWIP_HDR_APPS_TFTP_SERVER_H
|
||||||
|
|
||||||
#include "lwip/apps/tftp_opts.h"
|
#include "lwip/apps/tftp_common.h"
|
||||||
#include "lwip/err.h"
|
|
||||||
#include "lwip/pbuf.h"
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
extern "C" {
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/** @ingroup tftp
|
|
||||||
* TFTP context containing callback functions for TFTP transfers
|
|
||||||
*/
|
|
||||||
struct tftp_context {
|
|
||||||
/**
|
|
||||||
* Open file for read/write.
|
|
||||||
* @param fname Filename
|
|
||||||
* @param mode Mode string from TFTP RFC 1350 (netascii, octet, mail)
|
|
||||||
* @param write Flag indicating read (0) or write (!= 0) access
|
|
||||||
* @returns File handle supplied to other functions
|
|
||||||
*/
|
|
||||||
void* (*open)(const char* fname, const char* mode, u8_t write);
|
|
||||||
/**
|
|
||||||
* Close file handle
|
|
||||||
* @param handle File handle returned by open()
|
|
||||||
*/
|
|
||||||
void (*close)(void* handle);
|
|
||||||
/**
|
|
||||||
* Read from file
|
|
||||||
* @param handle File handle returned by open()
|
|
||||||
* @param buf Target buffer to copy read data to
|
|
||||||
* @param bytes Number of bytes to copy to buf
|
|
||||||
* @returns >= 0: Success; < 0: Error
|
|
||||||
*/
|
|
||||||
int (*read)(void* handle, void* buf, int bytes);
|
|
||||||
/**
|
|
||||||
* Write to file
|
|
||||||
* @param handle File handle returned by open()
|
|
||||||
* @param pbuf PBUF adjusted such that payload pointer points
|
|
||||||
* to the beginning of write data. In other words,
|
|
||||||
* TFTP headers are stripped off.
|
|
||||||
* @returns >= 0: Success; < 0: Error
|
|
||||||
*/
|
|
||||||
int (*write)(void* handle, struct pbuf* p);
|
|
||||||
};
|
|
||||||
|
|
||||||
err_t tftp_init(const struct tftp_context* ctx);
|
|
||||||
void tftp_cleanup(void);
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#endif /* LWIP_HDR_APPS_TFTP_SERVER_H */
|
#endif /* LWIP_HDR_APPS_TFTP_SERVER_H */
|
||||||
|
Loading…
Reference in New Issue
Block a user