1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* lejp test app
*
* Written in 2010-2019 by Andy Green <andy@warmcat.com>
*
* This file is made available under the Creative Commons CC0 1.0
* Universal Public Domain Dedication.
*
* This demonstrates a minimal http server that performs a form GET with a couple
* of parameters. It dumps the parameters to the console log and redirects
* to another page.
*/
#include <libwebsockets.h>
#include <string.h>
static const char * const reason_names[] = {
"LECPCB_CONSTRUCTED",
"LECPCB_DESTRUCTED",
"LECPCB_START",
"LECPCB_COMPLETE",
"LECPCB_FAILED",
"LECPCB_PAIR_NAME",
"LECPCB_VAL_TRUE",
"LECPCB_VAL_FALSE",
"LECPCB_VAL_NULL",
"LECPCB_VAL_NUM_INT",
"LECPCB_VAL_RESERVED", /* float in lejp */
"LECPCB_VAL_STR_START",
"LECPCB_VAL_STR_CHUNK",
"LECPCB_VAL_STR_END",
"LECPCB_ARRAY_START",
"LECPCB_ARRAY_END",
"LECPCB_OBJECT_START",
"LECPCB_OBJECT_END",
"LECPCB_TAG_START",
"LECPCB_TAG_END",
"LECPCB_VAL_NUM_UINT",
"LECPCB_VAL_UNDEFINED",
"LECPCB_VAL_FLOAT16",
"LECPCB_VAL_FLOAT32",
"LECPCB_VAL_FLOAT64",
"LECPCB_VAL_SIMPLE",
"LECPCB_VAL_BLOB_START",
"LECPCB_VAL_BLOB_CHUNK",
"LECPCB_VAL_BLOB_END",
};
static const char * const tok[] = {
"dummy___"
};
static signed char
cb(struct lecp_ctx *ctx, char reason)
{
char buf[1024], *p = buf, *end = &buf[sizeof(buf)];
int n;
for (n = 0; n < ctx->sp; n++)
*p++ = ' ';
*p = '\0';
lwsl_notice("%s%s: path %s match %d statckp %d\r\n", buf,
reason_names[(unsigned int)(reason) &
(LEJP_FLAG_CB_IS_VALUE - 1)], ctx->path,
ctx->path_match, ctx->pst[ctx->pst_sp].ppos);
if (reason & LECP_FLAG_CB_IS_VALUE) {
switch (reason) {
case LECPCB_VAL_NUM_UINT:
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p),
" value %llu ",
(unsigned long long)ctx->item.u.u64);
break;
case LECPCB_VAL_STR_START:
case LECPCB_VAL_STR_CHUNK:
case LECPCB_VAL_STR_END:
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p),
" value '%s' ", ctx->buf);
break;
case LECPCB_VAL_BLOB_START:
case LECPCB_VAL_BLOB_CHUNK:
case LECPCB_VAL_BLOB_END:
if (ctx->npos)
lwsl_hexdump_notice(ctx->buf, (size_t)ctx->npos);
break;
case LECPCB_VAL_NUM_INT:
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p),
" value %lld ",
(long long)ctx->item.u.i64);
break;
case LECPCB_VAL_FLOAT16:
case LECPCB_VAL_FLOAT32:
case LECPCB_VAL_FLOAT64:
break;
case LECPCB_VAL_SIMPLE:
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p),
" simple %llu ",
(unsigned long long)ctx->item.u.u64);
break;
}
if (ctx->ipos) {
int n;
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p), "(array indexes: ");
for (n = 0; n < ctx->ipos; n++)
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p), "%d ", ctx->i[n]);
p += lws_snprintf(p, lws_ptr_diff_size_t(end, p), ") ");
}
lwsl_notice("%s \r\n", buf);
(void)reason_names; /* NO_LOGS... */
return 0;
}
switch (reason) {
case LECPCB_COMPLETE:
lwsl_notice("%sParsing Completed (LEJPCB_COMPLETE)\n", buf);
break;
case LECPCB_PAIR_NAME:
lwsl_notice("%spath: '%s' (LEJPCB_PAIR_NAME)\n", buf, ctx->path);
break;
case LECPCB_TAG_START:
lwsl_notice("LECPCB_TAG_START: %llu\r\n", (unsigned long long)ctx->item.u.u64);
return 0;
}
return 0;
}
int
main(int argc, char *argv[])
{
int fd, n = 1, ret = 1, m = 0;
struct lecp_ctx ctx;
char buf[128];
lws_set_log_level(7, NULL);
lwsl_notice("libwebsockets-test-lecp (C) 2017 - 2021 andy@warmcat.com\n");
lwsl_notice(" usage: cat my.cbor | libwebsockets-test-lecp\n\n");
lecp_construct(&ctx, cb, NULL, tok, LWS_ARRAY_SIZE(tok));
fd = 0;
while (n > 0) {
n = (int)read(fd, buf, sizeof(buf));
if (n <= 0)
continue;
m = lecp_parse(&ctx, (uint8_t *)buf, (size_t)n);
if (m < 0 && m != LEJP_CONTINUE) {
lwsl_err("parse failed %d\n", m);
goto bail;
}
}
lwsl_notice("okay (%d)\n", m);
ret = 0;
bail:
lecp_destruct(&ctx);
return ret;
}
|
