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Diffstat (limited to 'include/import/mjson.h')
| -rw-r--r-- | include/import/mjson.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/include/import/mjson.h b/include/import/mjson.h new file mode 100644 index 0000000..b96fd3f --- /dev/null +++ b/include/import/mjson.h @@ -0,0 +1,209 @@ +// Copyright (c) 2018-2020 Cesanta Software Limited +// All rights reserved +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +#ifndef MJSON_H +#define MJSON_H + +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> + +#ifndef MJSON_ENABLE_PRINT +#define MJSON_ENABLE_PRINT 1 +#endif + +#ifndef MJSON_ENABLE_RPC +#define MJSON_ENABLE_RPC 1 +#endif + +#ifndef MJSON_ENABLE_BASE64 +#define MJSON_ENABLE_BASE64 1 +#endif + +#ifndef MJSON_ENABLE_MERGE +#define MJSON_ENABLE_MERGE 0 +#elif MJSON_ENABLE_MERGE +#define MJSON_ENABLE_NEXT 1 +#endif + +#ifndef MJSON_ENABLE_PRETTY +#define MJSON_ENABLE_PRETTY 0 +#elif MJSON_ENABLE_PRETTY +#define MJSON_ENABLE_NEXT 1 +#endif + +#ifndef MJSON_ENABLE_NEXT +#define MJSON_ENABLE_NEXT 0 +#endif + +#ifndef MJSON_RPC_LIST_NAME +#define MJSON_RPC_LIST_NAME "rpc.list" +#endif + +#ifndef MJSON_DYNBUF_CHUNK +#define MJSON_DYNBUF_CHUNK 256 // Allocation granularity for print_dynamic_buf +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +enum { + MJSON_ERROR_INVALID_INPUT = -1, + MJSON_ERROR_TOO_DEEP = -2, +}; + +enum mjson_tok { + MJSON_TOK_INVALID = 0, + MJSON_TOK_KEY = 1, + MJSON_TOK_STRING = 11, + MJSON_TOK_NUMBER = 12, + MJSON_TOK_TRUE = 13, + MJSON_TOK_FALSE = 14, + MJSON_TOK_NULL = 15, + MJSON_TOK_ARRAY = 91, + MJSON_TOK_OBJECT = 123, +}; +#define MJSON_TOK_IS_VALUE(t) ((t) > 10 && (t) < 20) + +typedef int (*mjson_cb_t)(int ev, const char *s, int off, int len, void *ud); + +#ifndef MJSON_MAX_DEPTH +#define MJSON_MAX_DEPTH 20 +#endif + +int mjson(const char *s, int len, mjson_cb_t cb, void *ud); +enum mjson_tok mjson_find(const char *s, int len, const char *jp, + const char **tokptr, int *toklen); +int mjson_get_number(const char *s, int len, const char *path, double *v); +int mjson_get_bool(const char *s, int len, const char *path, int *v); +int mjson_get_string(const char *s, int len, const char *path, char *to, int n); +int mjson_get_hex(const char *s, int len, const char *path, char *to, int n); + +#if MJSON_ENABLE_NEXT +int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff, + int *vlen, int *vtype); +#endif + +#if MJSON_ENABLE_BASE64 +int mjson_get_base64(const char *s, int len, const char *path, char *to, int n); +int mjson_base64_dec(const char *src, int n, char *dst, int dlen); +#endif + +#if MJSON_ENABLE_PRINT +typedef int (*mjson_print_fn_t)(const char *buf, int len, void *userdata); +typedef int (*mjson_vprint_fn_t)(mjson_print_fn_t, void *, va_list *); + +struct mjson_fixedbuf { + char *ptr; + int size, len; +}; + +int mjson_printf(mjson_print_fn_t, void *, const char *fmt, ...); +int mjson_vprintf(mjson_print_fn_t, void *, const char *fmt, va_list ap); +int mjson_print_str(mjson_print_fn_t, void *, const char *s, int len); +int mjson_print_int(mjson_print_fn_t, void *, int value, int is_signed); +int mjson_print_long(mjson_print_fn_t, void *, long value, int is_signed); +int mjson_print_buf(mjson_print_fn_t fn, void *, const char *buf, int len); + +int mjson_print_null(const char *ptr, int len, void *userdata); +int mjson_print_fixed_buf(const char *ptr, int len, void *userdata); +int mjson_print_dynamic_buf(const char *ptr, int len, void *userdata); + +#if MJSON_ENABLE_PRETTY +int mjson_pretty(const char *, int, const char *, mjson_print_fn_t, void *); +#endif + +#if MJSON_ENABLE_MERGE +int mjson_merge(const char *, int, const char *, int, mjson_print_fn_t, void *); +#endif + +#endif // MJSON_ENABLE_PRINT + +#if MJSON_ENABLE_RPC + +void jsonrpc_init(mjson_print_fn_t, void *userdata); +int mjson_globmatch(const char *s1, int n1, const char *s2, int n2); + +struct jsonrpc_request { + struct jsonrpc_ctx *ctx; + const char *frame; // Points to the whole frame + int frame_len; // Frame length + const char *params; // Points to the "params" in the request frame + int params_len; // Length of the "params" + const char *id; // Points to the "id" in the request frame + int id_len; // Length of the "id" + const char *method; // Points to the "method" in the request frame + int method_len; // Length of the "method" + mjson_print_fn_t fn; // Printer function + void *fndata; // Printer function data + void *userdata; // Callback's user data as specified at export time +}; + +struct jsonrpc_method { + const char *method; + int method_sz; + void (*cb)(struct jsonrpc_request *); + struct jsonrpc_method *next; +}; + +// Main RPC context, stores current request information and a list of +// exported RPC methods. +struct jsonrpc_ctx { + struct jsonrpc_method *methods; + mjson_print_fn_t response_cb; + void *response_cb_data; +}; + +// Registers function fn under the given name within the given RPC context +#define jsonrpc_ctx_export(ctx, name, fn) \ + do { \ + static struct jsonrpc_method m = {(name), sizeof(name) - 1, (fn), 0}; \ + m.next = (ctx)->methods; \ + (ctx)->methods = &m; \ + } while (0) + +void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t, void *); +void jsonrpc_return_error(struct jsonrpc_request *r, int code, + const char *message, const char *data_fmt, ...); +void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt, + ...); +void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz, + mjson_print_fn_t fn, void *fndata, void *userdata); + +extern struct jsonrpc_ctx jsonrpc_default_context; + +#define jsonrpc_export(name, fn) \ + jsonrpc_ctx_export(&jsonrpc_default_context, (name), (fn)) + +#define jsonrpc_process(buf, len, fn, fnd, ud) \ + jsonrpc_ctx_process(&jsonrpc_default_context, (buf), (len), (fn), (fnd), (ud)) + +#define JSONRPC_ERROR_INVALID -32700 /* Invalid JSON was received */ +#define JSONRPC_ERROR_NOT_FOUND -32601 /* The method does not exist */ +#define JSONRPC_ERROR_BAD_PARAMS -32602 /* Invalid params passed */ +#define JSONRPC_ERROR_INTERNAL -32603 /* Internal JSON-RPC error */ + +#endif // MJSON_ENABLE_RPC +#ifdef __cplusplus +} +#endif +#endif // MJSON_H |