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/* PipeWire AGL Cluster IPC
*
* Copyright © 2021 Collabora Ltd.
* @author Julian Bouzas <julian.bouzas@collabora.com>
*
* SPDX-License-Identifier: MIT
*/
#include "data.h"
#include "protocol.h"
enum {
REPLY_CODE_ERROR = 0,
REPLY_CODE_OK,
};
static bool is_reply(const uint8_t *buffer, size_t size, uint32_t code) {
DataParser p;
uint32_t parsed_code = 0;
if (!data_parser_init(&p, buffer, size) ||
!data_parser_get_id(&p, &parsed_code))
return false;
return parsed_code == code;
}
/* API */
size_t icipc_protocol_calculate_request_size(
const char *name,
const struct icipc_data *args) {
assert (name);
return sizeof(struct icipc_data) +
data_type_string_calc_size(name) +
(args ? data_type_raw_calc_size(args) : sizeof(struct icipc_data));
}
void icipc_protocol_build_request(
uint8_t *buffer,
size_t size,
const char *name,
const struct icipc_data *args) {
DataBuilder b;
const struct icipc_data none = { 0, DATA_TYPE_NONE };
if (args == NULL)
args = &none;
data_builder_init(&b, buffer, size);
data_builder_push_string(&b, name);
data_builder_push_raw(&b, args);
}
bool icipc_protocol_parse_request(
const uint8_t *buffer,
size_t size,
const char **name,
const struct icipc_data **args) {
DataParser p;
const char *parsed_name = NULL;
const struct icipc_data *parsed_args = NULL;
if (!data_parser_init(&p, buffer, size) ||
!data_parser_get_string(&p, &parsed_name) ||
!data_parser_get_raw(&p, &parsed_args))
return false;
if (name != NULL)
*name = parsed_name;
if (args != NULL)
*args = parsed_args;
return true;
}
size_t icipc_protocol_calculate_reply_ok_size(const struct icipc_data *value) {
return sizeof(struct icipc_data) +
data_type_id_calc_size() +
(value ? data_type_raw_calc_size(value) : sizeof(struct icipc_data));
}
size_t icipc_protocol_calculate_reply_error_size(const char *msg) {
assert (msg);
return sizeof(struct icipc_data) +
data_type_id_calc_size() +
data_type_string_calc_size(msg);
}
void icipc_protocol_build_reply_ok(
uint8_t *buffer,
size_t size,
const struct icipc_data *value) {
DataBuilder b;
const struct icipc_data none = { 0, DATA_TYPE_NONE };
if (value == NULL)
value = &none;
data_builder_init(&b, buffer, size);
data_builder_push_id(&b, REPLY_CODE_OK);
data_builder_push_raw(&b, value);
}
void icipc_protocol_build_reply_error(
uint8_t *buffer,
size_t size,
const char *msg) {
DataBuilder b;
data_builder_init(&b, buffer, size);
data_builder_push_id(&b, REPLY_CODE_ERROR);
data_builder_push_string(&b, msg);
}
bool icipc_protocol_is_reply_ok(const uint8_t *buffer, size_t size) {
return is_reply (buffer, size, REPLY_CODE_OK);
}
bool icipc_protocol_is_reply_error(const uint8_t *buffer, size_t size) {
return is_reply (buffer, size, REPLY_CODE_ERROR);
}
bool icipc_protocol_parse_reply_ok(
const uint8_t *buffer,
size_t size,
const struct icipc_data **value) {
DataParser p;
uint32_t parsed_code = 0;
const struct icipc_data *parsed_value = NULL;
if (!data_parser_init(&p, buffer, size) ||
!data_parser_get_id(&p, &parsed_code) ||
!data_parser_get_raw(&p, &parsed_value))
return false;
if (value != NULL)
*value = parsed_value;
return true;
}
bool icipc_protocol_parse_reply_error(
const uint8_t *buffer,
size_t size,
const char **msg) {
DataParser p;
uint32_t parsed_code = 0;
const char *parsed_msg = NULL;
if (!data_parser_init(&p, buffer, size) ||
!data_parser_get_id(&p, &parsed_code) ||
!data_parser_get_string(&p, &parsed_msg))
return false;
if (msg != NULL)
*msg = parsed_msg;
return true;
}
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