diff options
Diffstat (limited to 'src/vppinfra/jsonformat.c')
| -rw-r--r-- | src/vppinfra/jsonformat.c | 522 |
1 files changed, 522 insertions, 0 deletions
diff --git a/src/vppinfra/jsonformat.c b/src/vppinfra/jsonformat.c new file mode 100644 index 00000000000..17b3ee9d3f8 --- /dev/null +++ b/src/vppinfra/jsonformat.c @@ -0,0 +1,522 @@ +/* + * Copyright (c) 2020 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 <vppinfra/cJSON.h> +#include <vnet/ethernet/mac_address.h> +#include <vnet/ip/ip6_packet.h> +#include <vnet/ip/ip_format_fns.h> +#include <vpp/api/types.h> +#include "jsonformat.h" + +#define _(T) \ + int vl_api_##T##_fromjson (cJSON *o, T *d) \ + { \ + if (!cJSON_IsNumber (o)) \ + return -1; \ + d[0] = (T) cJSON_GetNumberValue (o); \ + return 0; \ + } +foreach_type_fromjson +#undef _ + + int + vl_api_bool_fromjson (cJSON *o, bool *d) +{ + if (!cJSON_IsBool(o)) return -1; + *d = o->valueint ? true : false; + return 0; +} + +int vl_api_u8_string_fromjson(cJSON *o, u8 *s, int len) +{ + unformat_input_t input; + char *p = cJSON_GetStringValue(o); + unformat_init_string (&input, p, strlen(p)); + if (!unformat (&input, "0x%U", unformat_hex_string, s)) + return -1; + return 0; +} + +u8 * +u8string_fromjson(cJSON *o, char *fieldname) +{ + u8 *s = 0; + unformat_input_t input; + cJSON *item = cJSON_GetObjectItem(o, fieldname); + if (!item) { + printf("Illegal JSON, no such fieldname %s\n", fieldname); + return 0; + } + + char *p = cJSON_GetStringValue(item); + unformat_init_string (&input, p, strlen(p)); + if (!unformat (&input, "0x%U", unformat_hex_string, &s)) + return 0; + return s; +} + +int +u8string_fromjson2(cJSON *o, char *fieldname, u8 *data) +{ + u8 *s = u8string_fromjson(o, fieldname); + if (!s) + return -1; + memcpy(data, s, vec_len(s)); + vec_free(s); + return 0; +} + +/* 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; +} + +/* 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++) + { + ASSERT ((double_colon_index + i) < ARRAY_LEN (hex_quads)); + 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_ip6_address (u8 * s, va_list * args) +{ + ip6_address_t *a = va_arg (*args, ip6_address_t *); + u32 max_zero_run = 0, this_zero_run = 0; + int max_zero_run_index = -1, this_zero_run_index = 0; + int in_zero_run = 0, i; + int last_double_colon = 0; + + /* Ugh, this is a pain. Scan forward looking for runs of 0's */ + for (i = 0; i < ARRAY_LEN (a->as_u16); i++) + { + if (a->as_u16[i] == 0) + { + if (in_zero_run) + this_zero_run++; + else + { + in_zero_run = 1; + this_zero_run = 1; + this_zero_run_index = i; + } + } + else + { + if (in_zero_run) + { + /* offer to compress the biggest run of > 1 zero */ + if (this_zero_run > max_zero_run && this_zero_run > 1) + { + max_zero_run_index = this_zero_run_index; + max_zero_run = this_zero_run; + } + } + in_zero_run = 0; + this_zero_run = 0; + } + } + + if (in_zero_run) + { + if (this_zero_run > max_zero_run && this_zero_run > 1) + { + max_zero_run_index = this_zero_run_index; + max_zero_run = this_zero_run; + } + } + + for (i = 0; i < ARRAY_LEN (a->as_u16); i++) + { + if (i == max_zero_run_index) + { + s = format (s, "::"); + i += max_zero_run - 1; + last_double_colon = 1; + } + else + { + s = format (s, "%s%x", + (last_double_colon || i == 0) ? "" : ":", + clib_net_to_host_u16 (a->as_u16[i])); + last_double_colon = 0; + } + } + + return s; +} + +int +vl_api_ip4_address_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_ip4_address_t *a) +{ + unformat_input_t input; + char *p = cJSON_GetStringValue(o); + if (!p) + return -1; + unformat_init_string (&input, p, strlen(p)); + if (!unformat (&input, "%U", unformat_ip4_address, a)) + return -1; + return 0; +} + +int +vl_api_ip4_prefix_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_ip4_prefix_t *a) +{ + unformat_input_t input; + char *p = cJSON_GetStringValue(o); + if (!p) + return -1; + unformat_init_string (&input, p, strlen(p)); + if (!unformat (&input, "%U/%d", unformat_ip4_address, &a->address, + &a->len)) + return -1; + return 0; +} + +int +vl_api_ip4_address_with_prefix_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_ip4_prefix_t *a) +{ + return vl_api_ip4_prefix_t_fromjson(mp, len, o, a); +} +int +vl_api_ip6_address_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_ip6_address_t *a) +{ + unformat_input_t input; + char *p = cJSON_GetStringValue(o); + if (!p) + return -1; + unformat_init_string (&input, p, strlen(p)); + if (!unformat (&input, "%U", unformat_ip6_address, a)) + return -1; + return 0; +} + +int +vl_api_ip6_prefix_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_ip6_prefix_t *a) +{ + unformat_input_t input; + char *p = cJSON_GetStringValue(o); + if (!p) + return -1; + unformat_init_string (&input, p, strlen(p)); + if (!unformat (&input, "%U/%d", unformat_ip6_address, &a->address, &a->len)) + return -1; + return 0; +} + +int +vl_api_ip6_address_with_prefix_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_ip6_prefix_t *a) +{ + return vl_api_ip6_prefix_t_fromjson(mp, len, o, a); +} + +int +vl_api_address_t_fromjson (void **mp, int *len, cJSON *o, vl_api_address_t *a) +{ + unformat_input_t input; + + char *p = cJSON_GetStringValue(o); + if (!p) + return -1; + unformat_init_string (&input, p, strlen(p)); + if (unformat (&input, "%U", unformat_ip4_address, &a->un.ip4)) + a->af = ADDRESS_IP4; + else if (unformat (&input, "%U", unformat_ip6_address, &a->un.ip6)) + a->af = ADDRESS_IP6; + else + return -1; + return 0; +} + +int +vl_api_prefix_t_fromjson (void **mp, int *len, cJSON *o, vl_api_prefix_t *a) +{ + unformat_input_t input; + + char *p = cJSON_GetStringValue(o); + + if (!p) + return -1; + unformat_init_string (&input, p, strlen(p)); + int plen; + if (unformat (&input, "%U/%d", unformat_ip4_address, &a->address.un.ip4, &plen)) + a->address.af = ADDRESS_IP4; + else if (unformat (&input, "%U/%d", unformat_ip6_address, &a->address.un.ip6, &plen)) + a->address.af = ADDRESS_IP6; + else + return -1; + a->len = plen; + return 0; +} + +int +vl_api_address_with_prefix_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_prefix_t *a) +{ + return vl_api_prefix_t_fromjson(mp, len, o, a); +} + +uword +unformat_mac_address (unformat_input_t * input, va_list * args) +{ + mac_address_t *mac = va_arg (*args, mac_address_t *); + u32 i, a[3]; + + if (unformat (input, "%_%X:%X:%X:%X:%X:%X%_", + 1, &mac->bytes[0], 1, &mac->bytes[1], 1, &mac->bytes[2], + 1, &mac->bytes[3], 1, &mac->bytes[4], 1, &mac->bytes[5])) + return (1); + else if (unformat (input, "%_%x.%x.%x%_", &a[0], &a[1], &a[2])) + { + for (i = 0; i < ARRAY_LEN (a); i++) + if (a[i] >= (1 << 16)) + return 0; + + mac->bytes[0] = (a[0] >> 8) & 0xff; + mac->bytes[1] = (a[0] >> 0) & 0xff; + mac->bytes[2] = (a[1] >> 8) & 0xff; + mac->bytes[3] = (a[1] >> 0) & 0xff; + mac->bytes[4] = (a[2] >> 8) & 0xff; + mac->bytes[5] = (a[2] >> 0) & 0xff; + + return (1); + } + return (0); +} + +int +vl_api_mac_address_t_fromjson (void **mp, int *len, cJSON *o, + vl_api_mac_address_t *a) +{ + unformat_input_t input; + + char *p = cJSON_GetStringValue(o); + unformat_init_string (&input, p, strlen(p)); + if (!unformat (&input, "%U", unformat_mac_address, a)) + return -1; + return 0; +} + +/* Format an IP4 address. */ +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]); +} + +int +vl_api_c_string_to_api_string (const char *buf, vl_api_string_t * str) +{ + /* copy without nul terminator */ + u32 len = strlen (buf); + if (len > 0) + clib_memcpy_fast (str->buf, buf, len); + str->length = htonl (len); + return len + sizeof (u32); +} + +void +vl_api_string_cJSON_AddToObject(cJSON * const object, const char * const name, vl_api_string_t *astr) +{ + + if (astr == 0) return; + u32 length = clib_net_to_host_u32 (astr->length); + + char *cstr = malloc(length + 1); + memcpy(cstr, astr->buf, length); + cstr[length] = '\0'; + cJSON_AddStringToObject(object, name, cstr); + free(cstr); +} + +u8 * +format_vl_api_timestamp_t(u8 * s, va_list * args) +{ + f64 timestamp = va_arg (*args, f64); + struct tm *tm; + word msec; + + time_t t = timestamp; + tm = gmtime (&t); + msec = 1e6 * (timestamp - t); + return format (s, "%4d-%02d-%02dT%02d:%02d:%02d.%06dZ", 1900 + tm->tm_year, + 1 + tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, + tm->tm_sec, msec); +} + +u8 * +format_vl_api_timedelta_t(u8 * s, va_list * args) +{ + return format_vl_api_timestamp_t(s, args); +} + +uword +unformat_vl_api_timedelta_t(unformat_input_t * input, va_list * args) +{ + return 0; +} + +uword +unformat_vl_api_timestamp_t(unformat_input_t * input, va_list * args) +{ + return 0; +} +uword unformat_vl_api_gbp_scope_t(unformat_input_t * input, va_list * args) +{ + return 0; +} + +cJSON * +vl_api_ip4_address_with_prefix_t_tojson (vl_api_ip4_prefix_t *a) { + return vl_api_ip4_prefix_t_tojson (a); +} +cJSON * +vl_api_ip6_address_with_prefix_t_tojson (vl_api_ip6_prefix_t *a) { + return vl_api_ip6_prefix_t_tojson (a); +} +cJSON * +vl_api_address_with_prefix_t_tojson (vl_api_prefix_t *a) { + return vl_api_prefix_t_tojson (a); +} +u8 * +format_vl_api_mac_address_t (u8 * s, va_list * args) +{ + const mac_address_t *mac = va_arg (*args, mac_address_t *); + + return format (s, "%02x:%02x:%02x:%02x:%02x:%02x", + mac->bytes[0], mac->bytes[1], mac->bytes[2], + mac->bytes[3], mac->bytes[4], mac->bytes[5]); +} +#define _(T) \ + cJSON *vl_api_ ##T## _t_tojson (vl_api_ ##T## _t *a) { \ + u8 *s = format(0, "%U", format_vl_api_ ##T## _t, a); \ + cJSON *o = cJSON_CreateString((char *)s); \ + vec_free(s); \ + return o; \ + } +foreach_type_tojson +#undef _ |