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41007a6835
This library is required for the subsequent patch which adds the JSON query possibility. It is necessary to change the include statement in "src/mjson.c" because the imported includes in haproxy are in "include/import" orig: #include "mjson.h" new: #include <import/mjson.h>
210 lines
7.0 KiB
C
210 lines
7.0 KiB
C
// Copyright (c) 2018-2020 Cesanta Software Limited
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// All rights reserved
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef MJSON_H
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#define MJSON_H
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef MJSON_ENABLE_PRINT
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#define MJSON_ENABLE_PRINT 1
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#endif
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#ifndef MJSON_ENABLE_RPC
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#define MJSON_ENABLE_RPC 1
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#endif
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#ifndef MJSON_ENABLE_BASE64
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#define MJSON_ENABLE_BASE64 1
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#endif
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#ifndef MJSON_ENABLE_MERGE
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#define MJSON_ENABLE_MERGE 0
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#elif MJSON_ENABLE_MERGE
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#define MJSON_ENABLE_NEXT 1
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#endif
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#ifndef MJSON_ENABLE_PRETTY
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#define MJSON_ENABLE_PRETTY 0
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#elif MJSON_ENABLE_PRETTY
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#define MJSON_ENABLE_NEXT 1
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#endif
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#ifndef MJSON_ENABLE_NEXT
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#define MJSON_ENABLE_NEXT 0
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#endif
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#ifndef MJSON_RPC_LIST_NAME
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#define MJSON_RPC_LIST_NAME "rpc.list"
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#endif
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#ifndef MJSON_DYNBUF_CHUNK
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#define MJSON_DYNBUF_CHUNK 256 // Allocation granularity for print_dynamic_buf
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum {
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MJSON_ERROR_INVALID_INPUT = -1,
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MJSON_ERROR_TOO_DEEP = -2,
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};
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enum mjson_tok {
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MJSON_TOK_INVALID = 0,
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MJSON_TOK_KEY = 1,
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MJSON_TOK_STRING = 11,
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MJSON_TOK_NUMBER = 12,
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MJSON_TOK_TRUE = 13,
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MJSON_TOK_FALSE = 14,
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MJSON_TOK_NULL = 15,
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MJSON_TOK_ARRAY = 91,
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MJSON_TOK_OBJECT = 123,
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};
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#define MJSON_TOK_IS_VALUE(t) ((t) > 10 && (t) < 20)
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typedef int (*mjson_cb_t)(int ev, const char *s, int off, int len, void *ud);
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#ifndef MJSON_MAX_DEPTH
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#define MJSON_MAX_DEPTH 20
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#endif
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int mjson(const char *s, int len, mjson_cb_t cb, void *ud);
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enum mjson_tok mjson_find(const char *s, int len, const char *jp,
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const char **tokptr, int *toklen);
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int mjson_get_number(const char *s, int len, const char *path, double *v);
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int mjson_get_bool(const char *s, int len, const char *path, int *v);
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int mjson_get_string(const char *s, int len, const char *path, char *to, int n);
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int mjson_get_hex(const char *s, int len, const char *path, char *to, int n);
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#if MJSON_ENABLE_NEXT
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int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
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int *vlen, int *vtype);
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#endif
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#if MJSON_ENABLE_BASE64
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int mjson_get_base64(const char *s, int len, const char *path, char *to, int n);
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int mjson_base64_dec(const char *src, int n, char *dst, int dlen);
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#endif
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#if MJSON_ENABLE_PRINT
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typedef int (*mjson_print_fn_t)(const char *buf, int len, void *userdata);
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typedef int (*mjson_vprint_fn_t)(mjson_print_fn_t, void *, va_list *);
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struct mjson_fixedbuf {
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char *ptr;
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int size, len;
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};
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int mjson_printf(mjson_print_fn_t, void *, const char *fmt, ...);
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int mjson_vprintf(mjson_print_fn_t, void *, const char *fmt, va_list ap);
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int mjson_print_str(mjson_print_fn_t, void *, const char *s, int len);
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int mjson_print_int(mjson_print_fn_t, void *, int value, int is_signed);
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int mjson_print_long(mjson_print_fn_t, void *, long value, int is_signed);
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int mjson_print_buf(mjson_print_fn_t fn, void *, const char *buf, int len);
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int mjson_print_null(const char *ptr, int len, void *userdata);
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int mjson_print_fixed_buf(const char *ptr, int len, void *userdata);
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int mjson_print_dynamic_buf(const char *ptr, int len, void *userdata);
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#if MJSON_ENABLE_PRETTY
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int mjson_pretty(const char *, int, const char *, mjson_print_fn_t, void *);
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#endif
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#if MJSON_ENABLE_MERGE
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int mjson_merge(const char *, int, const char *, int, mjson_print_fn_t, void *);
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#endif
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#endif // MJSON_ENABLE_PRINT
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#if MJSON_ENABLE_RPC
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void jsonrpc_init(mjson_print_fn_t, void *userdata);
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int mjson_globmatch(const char *s1, int n1, const char *s2, int n2);
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struct jsonrpc_request {
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struct jsonrpc_ctx *ctx;
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const char *frame; // Points to the whole frame
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int frame_len; // Frame length
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const char *params; // Points to the "params" in the request frame
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int params_len; // Length of the "params"
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const char *id; // Points to the "id" in the request frame
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int id_len; // Length of the "id"
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const char *method; // Points to the "method" in the request frame
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int method_len; // Length of the "method"
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mjson_print_fn_t fn; // Printer function
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void *fndata; // Printer function data
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void *userdata; // Callback's user data as specified at export time
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};
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struct jsonrpc_method {
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const char *method;
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int method_sz;
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void (*cb)(struct jsonrpc_request *);
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struct jsonrpc_method *next;
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};
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// Main RPC context, stores current request information and a list of
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// exported RPC methods.
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struct jsonrpc_ctx {
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struct jsonrpc_method *methods;
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mjson_print_fn_t response_cb;
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void *response_cb_data;
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};
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// Registers function fn under the given name within the given RPC context
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#define jsonrpc_ctx_export(ctx, name, fn) \
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do { \
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static struct jsonrpc_method m = {(name), sizeof(name) - 1, (fn), 0}; \
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m.next = (ctx)->methods; \
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(ctx)->methods = &m; \
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} while (0)
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void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t, void *);
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void jsonrpc_return_error(struct jsonrpc_request *r, int code,
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const char *message, const char *data_fmt, ...);
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void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
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...);
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void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
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mjson_print_fn_t fn, void *fndata, void *userdata);
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extern struct jsonrpc_ctx jsonrpc_default_context;
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#define jsonrpc_export(name, fn) \
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jsonrpc_ctx_export(&jsonrpc_default_context, (name), (fn))
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#define jsonrpc_process(buf, len, fn, fnd, ud) \
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jsonrpc_ctx_process(&jsonrpc_default_context, (buf), (len), (fn), (fnd), (ud))
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#define JSONRPC_ERROR_INVALID -32700 /* Invalid JSON was received */
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#define JSONRPC_ERROR_NOT_FOUND -32601 /* The method does not exist */
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#define JSONRPC_ERROR_BAD_PARAMS -32602 /* Invalid params passed */
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#define JSONRPC_ERROR_INTERNAL -32603 /* Internal JSON-RPC error */
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#endif // MJSON_ENABLE_RPC
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#ifdef __cplusplus
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}
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#endif
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#endif // MJSON_H
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