Freeciv-3.3: /fast/freeciv/nightly/main/common/networking/packets_json.h Source File

Freeciv-3.3

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packets_json.h
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1/***********************************************************************
2 Freeciv - Copyright (C) 1996 - A Kjeldberg, L Gregersen, P Unold
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; either version 2, or (at your option)
6 any later version.
7
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
12***********************************************************************/
13#ifndef FC__PACKETS_JSON_H
14#define FC__PACKETS_JSON_H
15
16#ifdef __cplusplus
17extern "C" {
18#endif /* __cplusplus */
19
20#include <jansson.h>
21
22#define log_packet_json log_debug
23
24 void *get_packet_from_connection_json(struct connection *pc,
25 enum packet_type *ptype);
26
27#define SEND_PACKET_START(packet_type) \
28 unsigned char buffer[MAX_LEN_PACKET * 5]; \
29 struct plocation *pid_addr; \
30 char *json_buffer = NULL; \
31 struct json_data_out dout; \
32 dio_output_init(&(dout.raw), buffer, sizeof(buffer)); \
33 if (pc->json_mode) { \
34 dout.json = json_object(); \
35 dio_put_uint16_raw(&(dout.raw), 0); \
36 pid_addr = plocation_field_new("pid"); \
37 dio_put_uint8_json(&dout, pid_addr, packet_type); \
38 FC_FREE(pid_addr); \
39 } else { \
40 dout.json = NULL; \
41 dio_put_type_raw(&dout.raw, pc->packet_header.length, 0); \
42 dio_put_type_raw(&dout.raw, pc->packet_header.type, packet_type); \
43 }
44
45#define SEND_PACKET_END(packet_type) \
46 { \
47 size_t size; \
48 if (pc->json_mode) { \
49 json_buffer = json_dumps(dout.json, JSON_COMPACT | JSON_ENSURE_ASCII); \
50 if (json_buffer) { \
51 dio_put_string_raw(&(dout.raw), json_buffer); \
52 log_packet_json("Json out: %s", json_buffer); \
53 } \
54 size = dio_output_used(&dout.raw); \
55 \
56 dio_output_rewind(&(dout.raw)); \
57 dio_put_uint16_raw(&(dout.raw), size); \
58 free(json_buffer); \
59 json_decref(dout.json); \
60 } else { \
61 size = dio_output_used(&dout.raw); \
62 \
63 dio_output_rewind(&dout.raw); \
64 dio_put_type_raw(&dout.raw, pc->packet_header.length, size); \
65 } \
66 fc_assert(!dout.raw.too_short); \
67 return send_packet_data(pc, buffer, size, packet_type); \
68 }
69
70#define RECEIVE_PACKET_START(packet_type, result) \
71 struct packet_type packet_buf, *result = &packet_buf; \
72 struct data_in din; \
73 init_ ##packet_type (&packet_buf); \
74 if (!pc->json_mode) { \
75 dio_input_init(&din, pc->buffer->data, \
76 data_type_size(pc->packet_header.length)); \
77 { \
78 int size; \
79 \
80 dio_get_type_raw(&din, pc->packet_header.length, &size); \
81 dio_input_init(&din, pc->buffer->data, MIN(size, pc->buffer->ndata)); \
82 } \
83 dio_input_skip(&din, (data_type_size(pc->packet_header.length) \
84 + data_type_size(pc->packet_header.type))); \
85 }
86
87#define RECEIVE_PACKET_END(result) \
88 if (pc->json_mode) { \
89 json_decref(pc->json_packet); \
90 result = fc_malloc(sizeof(*result)); \
91 *result = packet_buf; \
92 return result; \
93 } else { \
94 if (!packet_check(&din, pc)) { \
95 FREE_PACKET_STRUCT(&packet_buf); \
96 return NULL; \
97 } \
98 remove_packet_from_buffer(pc->buffer); \
99 result = fc_malloc(sizeof(*result)); \
100 *result = packet_buf; \
101 return result; \
102 }
103
104#define RECEIVE_PACKET_FIELD_ERROR(field, ...) \
105 log_packet("Error on field '" #field "'" __VA_ARGS__); \
106 FREE_PACKET_STRUCT(&packet_buf); \
107 return NULL;
108
109/* Utilities to move string vectors in and out of packets. */
110#define PACKET_STRVEC_INSERT(dest, src) \
111 dest = src
112#define PACKET_STRVEC_EXTRACT(dest, src) \
113 if (src != nullptr && strvec_size(src) > 0) { \
114 dest = strvec_new(); \
115 strvec_copy(dest, src); \
116 } else { \
117 dest = nullptr; \
118 }
119
120#ifdef __cplusplus
121}
122#endif /* __cplusplus */
123
124#endif /* FC__PACKETS_JSON_H */
incite_cost
char * incite_cost
Definition comments.c:74
packet_type
packet_type
Definition packets_gen.h:1902
get_packet_from_connection_json
void * get_packet_from_connection_json(struct connection *pc, enum packet_type *ptype)
connection
Definition connection.h:136