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/*
* umbim
* Copyright (C) 2014 John Crispin <blogic@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <alloca.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libubox/utils.h>
#include <libubox/uloop.h>
#include "mbim.h"
#include "data/mbim-service-basic-connect.h"
int transaction_id = 1;
uint8_t basic_connect[16] = { 0xa2, 0x89, 0xcc, 0x33, 0xbc, 0xbb, 0x8b, 0x4f,
0xb6, 0xb0, 0x13, 0x3e, 0xc2, 0xaa, 0xe6,0xdf };
static int payload_offset, payload_free, payload_len;
static uint8_t *payload_buffer;
int
mbim_add_payload(uint8_t len)
{
uint32_t offset = payload_offset;
if (payload_free < len)
return 0;
payload_free -= len;
payload_offset += len;
payload_len += len;
return offset;
}
int
mbim_encode_string(struct mbim_string *str, char *in)
{
int l = strlen(in);
int s = mbim_add_payload(l * 2);
uint8_t *p = &payload_buffer[s];
int i;
if (!s)
return -1;
str->offset = htole32(s);
str->length = htole32(l * 2);
for (i = 0; i < l; i++)
p[i * 2] = in[i];
return 0;
}
char *
mbim_get_string(struct mbim_string *str, char *in)
{
char *p = &in[le32toh(str->offset)];
int i;
if (!le32toh(str->offset))
return NULL;
if (le32toh(str->length)) {
for (i = 0; i < le32toh(str->length) / 2; i++)
p[i] = p[i * 2];
p[i] = '\0';
str->length = 0;
}
return p;
}
void
mbim_get_ipv4(void *buffer, char *out, uint32_t offset)
{
uint8_t *b = buffer + offset;
snprintf(out, 16, "%d.%d.%d.%d", b[0], b[1], b[2], b[3]);
}
void
mbim_get_ipv6(void *buffer, char *out, uint32_t offset)
{
uint8_t *b = buffer + offset;
snprintf(out, 40, "%x:%x:%x:%x:%x:%x:%x:%x", b[0] << 8 | b[1],
b[2] << 8 | b[3], b[4] << 8 | b[5], b[6] << 8 | b[7],
b[8] << 8 | b[9], b[10] << 8 | b[11], b[12] << 8 | b[13],
b[14] << 8 | b[15]);
}
uint32_t
mbim_get_int(void *buffer, uint32_t offset)
{
uint32_t *i = buffer + offset;
return le32toh(*i);
}
const char*
mbim_enum_string(struct mbim_enum *e, uint32_t key)
{
while (e->skey) {
if (key == e->key)
return e->val;
e++;
}
return NULL;
}
void
mbim_setup_header(struct mbim_message_header *hdr, MbimMessageType type, int length)
{
if (length < 16)
length = 16;
hdr->transaction_id = htole32(transaction_id++);
hdr->type = htole32(type);
hdr->length = htole32(length);
}
uint8_t*
mbim_setup_command_msg(uint8_t *uuid, uint32_t type, uint32_t command_id, int len)
{
struct command_message *cmd = (struct command_message *) mbim_buffer;
memset(mbim_buffer, 0, MBIM_BUFFER_SIZE);
cmd->fragment_header.total = htole32(1);
cmd->fragment_header.current = htole32(0);
memcpy(cmd->service_id, uuid, 16);
cmd->command_id = htole32(command_id);
cmd->command_type = htole32(type);
cmd->buffer_length = htole32(len);
payload_offset = len;
payload_free = MBIM_BUFFER_SIZE - (sizeof(*cmd) + len);
payload_len = 0;
payload_buffer = cmd->buffer;
return cmd->buffer;
}
int
mbim_send_command_msg(void)
{
struct command_message *cmd = (struct command_message *) mbim_buffer;
if (payload_len & 0x3) {
payload_len &= ~0x3;
payload_len += 4;
}
cmd->buffer_length = htole32(le32toh(cmd->buffer_length) + payload_len);
mbim_setup_header(&cmd->header, MBIM_MESSAGE_TYPE_COMMAND, sizeof(*cmd) + le32toh(cmd->buffer_length));
return mbim_send();
}
int
mbim_send_open_msg(void)
{
struct mbim_open_message *msg = (struct mbim_open_message *) mbim_buffer;
mbim_setup_header(&msg->header, MBIM_MESSAGE_TYPE_OPEN, sizeof(*msg));
msg->max_control_transfer = htole32(MBIM_BUFFER_SIZE);
return mbim_send();
}
int
mbim_send_close_msg(void)
{
struct mbim_message_header *hdr = (struct mbim_message_header *) mbim_buffer;
if (no_close) {
uloop_end();
return 0;
}
mbim_setup_header(hdr, MBIM_MESSAGE_TYPE_CLOSE, sizeof(*hdr));
return mbim_send();
}
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