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/*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vat/vat.h>
#include <vnet/ip/ip.h>
uword
unformat_sw_if_index (unformat_input_t * input, va_list * args)
{
vat_main_t *vam = va_arg (*args, vat_main_t *);
u32 *result = va_arg (*args, u32 *);
u8 *if_name;
uword *p;
if (!unformat (input, "%s", &if_name))
return 0;
p = hash_get_mem (vam->sw_if_index_by_interface_name, if_name);
if (p == 0)
return 0;
*result = p[0];
return 1;
}
/* Parse an IP4 address %d.%d.%d.%d. */
uword
unformat_ip4_address (unformat_input_t * input, va_list * args)
{
u8 *result = va_arg (*args, u8 *);
unsigned a[4];
if (!unformat (input, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]))
return 0;
if (a[0] >= 256 || a[1] >= 256 || a[2] >= 256 || a[3] >= 256)
return 0;
result[0] = a[0];
result[1] = a[1];
result[2] = a[2];
result[3] = a[3];
return 1;
}
uword
unformat_ethernet_address (unformat_input_t * input, va_list * args)
{
u8 *result = va_arg (*args, u8 *);
u32 i, a[6];
if (!unformat (input, "%_%x:%x:%x:%x:%x:%x%_",
&a[0], &a[1], &a[2], &a[3], &a[4], &a[5]))
return 0;
/* Check range. */
for (i = 0; i < 6; i++)
if (a[i] >= (1 << 8))
return 0;
for (i = 0; i < 6; i++)
result[i] = a[i];
return 1;
}
/* Returns ethernet type as an int in host byte order. */
uword
unformat_ethernet_type_host_byte_order (unformat_input_t * input,
va_list * args)
{
u16 *result = va_arg (*args, u16 *);
int type;
/* Numeric type. */
if (unformat (input, "0x%x", &type) || unformat (input, "%d", &type))
{
if (type >= (1 << 16))
return 0;
*result = type;
return 1;
}
return 0;
}
/* Parse an IP6 address. */
uword
unformat_ip6_address (unformat_input_t * input, va_list * args)
{
ip6_address_t *result = va_arg (*args, ip6_address_t *);
u16 hex_quads[8];
uword hex_quad, n_hex_quads, hex_digit, n_hex_digits;
uword c, n_colon, double_colon_index;
n_hex_quads = hex_quad = n_hex_digits = n_colon = 0;
double_colon_index = ARRAY_LEN (hex_quads);
while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT)
{
hex_digit = 16;
if (c >= '0' && c <= '9')
hex_digit = c - '0';
else if (c >= 'a' && c <= 'f')
hex_digit = c + 10 - 'a';
else if (c >= 'A' && c <= 'F')
hex_digit = c + 10 - 'A';
else if (c == ':' && n_colon < 2)
n_colon++;
else
{
unformat_put_input (input);
break;
}
/* Too many hex quads. */
if (n_hex_quads >= ARRAY_LEN (hex_quads))
return 0;
if (hex_digit < 16)
{
hex_quad = (hex_quad << 4) | hex_digit;
/* Hex quad must fit in 16 bits. */
if (n_hex_digits >= 4)
return 0;
n_colon = 0;
n_hex_digits++;
}
/* Save position of :: */
if (n_colon == 2)
{
/* More than one :: ? */
if (double_colon_index < ARRAY_LEN (hex_quads))
return 0;
double_colon_index = n_hex_quads;
}
if (n_colon > 0 && n_hex_digits > 0)
{
hex_quads[n_hex_quads++] = hex_quad;
hex_quad = 0;
n_hex_digits = 0;
}
}
if (n_hex_digits > 0)
hex_quads[n_hex_quads++] = hex_quad;
{
word i;
/* Expand :: to appropriate number of zero hex quads. */
if (double_colon_index < ARRAY_LEN (hex_quads))
{
word n_zero = ARRAY_LEN (hex_quads) - n_hex_quads;
for (i = n_hex_quads - 1; i >= (signed) double_colon_index; i--)
hex_quads[n_zero + i] = hex_quads[i];
for (i = 0; i < n_zero; i++)
hex_quads[double_colon_index + i] = 0;
n_hex_quads = ARRAY_LEN (hex_quads);
}
/* Too few hex quads given. */
if (n_hex_quads < ARRAY_LEN (hex_quads))
return 0;
for (i = 0; i < ARRAY_LEN (hex_quads); i++)
result->as_u16[i] = clib_host_to_net_u16 (hex_quads[i]);
return 1;
}
}
u8 *
format_ip4_address (u8 * s, va_list * args)
{
u8 *a = va_arg (*args, u8 *);
return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
}
u8 *
format_ethernet_address (u8 * s, va_list * args)
{
u8 *a = va_arg (*args, u8 *);
return format (s, "%02x:%02x:%02x:%02x:%02x:%02x",
a[0], a[1], a[2], a[3], a[4], a[5]);
}
void
vat_plugin_api_reference (void)
{
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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