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Abort transference when getting file size.

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This commit is contained in:
Manoel R. Abranches 2010-06-23 14:47:55 -03:00
parent 8c599704a7
commit bf6d9eeb53
1 changed files with 32 additions and 6 deletions
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38
net/tftp.c
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@ -71,7 +71,6 @@ tftp_open (struct grub_net_network_layer_interface *inf __attribute((unused)),
udp_interf = (struct udp_interf *) app_interface->data;
udp_interf->src = TFTP_CLIENT_PORT + rrq_count++;
grub_printf("open tfpt udp_port = %d\n",udp_interf->src);
udp_interf->dst = TFTP_SERVER_PORT;
tftph = (struct tftphdr *) nb->data;
@ -135,16 +134,15 @@ tftp_receive (struct grub_net_network_layer_interface *inf __attribute((unused))
temp = (char *) tftph->u.oack.data;
while(get_tok_val(&token,&value,&temp,nb->tail))
{
grub_printf("tok = <%s> val = <%s>\n",token,value);
process_option(token,value);
}
//buff_clean
nb->data = nb->tail;
grub_printf("OACK---------------------------------------------------------\n");
grub_printf("block_size=%d\n",tftp_file.block_size);
grub_printf("file_size=%d\n",tftp_file.size);
grub_printf("OACK---------------------------------------------------------\n");
// grub_printf("OACK---------------------------------------------------------\n");
//grub_printf("block_size=%d\n",tftp_file.block_size);
// grub_printf("file_size=%d\n",tftp_file.size);
// grub_printf("OACK---------------------------------------------------------\n");
block = 0;
break;
case TFTP_DATA:
@ -182,11 +180,39 @@ tftp_send_ack (struct grub_net_network_layer_interface *inf __attribute((unused)
return app_interface->trans_prot->send (inf,protstack->interface,nb);
}
static grub_err_t
tftp_send_err (struct grub_net_network_layer_interface *inf __attribute((unused)),
struct grub_net_protocol_stack *protstack,struct grub_net_buff *nb, char *errmsg, int errcode)
{
struct tftphdr *tftph;
struct grub_net_application_transport_interface *app_interface
= (struct grub_net_application_transport_interface *) protstack->interface;
int msglen = 0;
int hdrlen = 0;
nb->data = nb->tail = nb->end;
grub_netbuff_push (nb,sizeof (*tftph));
tftph = (struct tftphdr *) nb->data;
tftph->opcode = TFTP_ERROR;
tftph->u.err.errcode = errcode;
grub_strcpy ((char *)tftph->u.err.errmsg,errmsg);
msglen += grub_strlen (errmsg) + 1;
hdrlen = sizeof (tftph->opcode) + sizeof (tftph->u.err.errcode) + msglen;
grub_netbuff_unput (nb,nb->tail - (nb->data + hdrlen));
return app_interface->trans_prot->send (inf,protstack->interface,nb);
}
static int tftp_file_size (struct grub_net_network_layer_interface* inf ,
struct grub_net_protocol_stack *protocol_stack , struct grub_net_buff *nb ,char *filename )
{
tftp_open (inf, protocol_stack,nb, filename);
tftp_send_err (inf, protocol_stack,nb,"Abort transference.",0);
return tftp_file.size;
}