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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
/*
* Copyright (C) Roman Arutyunyan
* Copyright (C) Dmitry Volyntsev
* Copyright (C) NGINX, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include "ngx_js.h"
#include "ngx_js_fetch.h"
static njs_external_t ngx_js_ext_core[] = {
{
.flags = NJS_EXTERN_METHOD,
.name.string = njs_str("log"),
.writable = 1,
.configurable = 1,
.enumerable = 1,
.u.method = {
.native = ngx_js_ext_log,
}
},
{
.flags = NJS_EXTERN_PROPERTY,
.name.string = njs_str("INFO"),
.u.property = {
.handler = ngx_js_ext_constant,
.magic32 = NGX_LOG_INFO,
}
},
{
.flags = NJS_EXTERN_PROPERTY,
.name.string = njs_str("WARN"),
.u.property = {
.handler = ngx_js_ext_constant,
.magic32 = NGX_LOG_WARN,
}
},
{
.flags = NJS_EXTERN_PROPERTY,
.name.string = njs_str("ERR"),
.u.property = {
.handler = ngx_js_ext_constant,
.magic32 = NGX_LOG_ERR,
}
},
{
.flags = NJS_EXTERN_METHOD,
.name.string = njs_str("fetch"),
.writable = 1,
.configurable = 1,
.enumerable = 1,
.u.method = {
.native = ngx_js_ext_fetch,
}
},
};
ngx_int_t
ngx_js_call(njs_vm_t *vm, ngx_str_t *fname, ngx_log_t *log,
njs_opaque_value_t *args, njs_uint_t nargs)
{
njs_str_t name, exception;
njs_function_t *func;
name.start = fname->data;
name.length = fname->len;
func = njs_vm_function(vm, &name);
if (func == NULL) {
ngx_log_error(NGX_LOG_ERR, log, 0,
"js function \"%V\" not found", fname);
return NGX_ERROR;
}
if (njs_vm_call(vm, func, njs_value_arg(args), nargs) != NJS_OK) {
njs_vm_retval_string(vm, &exception);
ngx_log_error(NGX_LOG_ERR, log, 0,
"js exception: %*s", exception.length, exception.start);
return NGX_ERROR;
}
return njs_vm_run(vm);
}
ngx_int_t
ngx_js_integer(njs_vm_t *vm, njs_value_t *value, ngx_int_t *n)
{
if (!njs_value_is_valid_number(value)) {
njs_vm_error(vm, "is not a number");
return NGX_ERROR;
}
*n = njs_value_number(value);
return NGX_OK;
}
ngx_int_t
ngx_js_string(njs_vm_t *vm, njs_value_t *value, njs_str_t *str)
{
if (value != NULL && !njs_value_is_null_or_undefined(value)) {
if (njs_vm_value_to_bytes(vm, str, value) == NJS_ERROR) {
return NGX_ERROR;
}
} else {
str->start = NULL;
str->length = 0;
}
return NGX_OK;
}
ngx_int_t
ngx_js_core_init(njs_vm_t *vm, ngx_log_t *log)
{
ngx_int_t rc;
njs_int_t ret, proto_id;
njs_str_t name;
njs_opaque_value_t value;
rc = ngx_js_fetch_init(vm, log);
if (rc != NGX_OK) {
return NGX_ERROR;
}
proto_id = njs_vm_external_prototype(vm, ngx_js_ext_core,
njs_nitems(ngx_js_ext_core));
if (proto_id < 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0, "failed to add js core proto");
return NGX_ERROR;
}
ret = njs_vm_external_create(vm, njs_value_arg(&value), proto_id, NULL, 1);
if (njs_slow_path(ret != NJS_OK)) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"njs_vm_external_create() failed\n");
return NGX_ERROR;
}
name.length = 3;
name.start = (u_char *) "ngx";
ret = njs_vm_bind(vm, &name, njs_value_arg(&value), 1);
if (njs_slow_path(ret != NJS_OK)) {
ngx_log_error(NGX_LOG_EMERG, log, 0, "njs_vm_bind() failed\n");
return NGX_ERROR;
}
return NGX_OK;
}
njs_int_t
ngx_js_ext_string(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value,
njs_value_t *setval, njs_value_t *retval)
{
char *p;
ngx_str_t *field;
p = njs_vm_external(vm, value);
if (p == NULL) {
njs_value_undefined_set(retval);
return NJS_DECLINED;
}
field = (ngx_str_t *) (p + njs_vm_prop_magic32(prop));
return njs_vm_value_string_set(vm, retval, field->data, field->len);
}
njs_int_t
ngx_js_ext_uint(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value,
njs_value_t *setval, njs_value_t *retval)
{
char *p;
ngx_uint_t field;
p = njs_vm_external(vm, value);
if (p == NULL) {
njs_value_undefined_set(retval);
return NJS_DECLINED;
}
field = *(ngx_uint_t *) (p + njs_vm_prop_magic32(prop));
njs_value_number_set(retval, field);
return NJS_OK;
}
njs_int_t
ngx_js_ext_constant(njs_vm_t *vm, njs_object_prop_t *prop,
njs_value_t *value, njs_value_t *setval, njs_value_t *retval)
{
njs_value_number_set(retval, njs_vm_prop_magic32(prop));
return NJS_OK;
}
njs_int_t
ngx_js_ext_boolean(njs_vm_t *vm, njs_object_prop_t *prop,
njs_value_t *value, njs_value_t *setval, njs_value_t *retval)
{
njs_value_boolean_set(retval, njs_vm_prop_magic32(prop));
return NJS_OK;
}
njs_int_t
ngx_js_ext_log(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
njs_index_t level)
{
char *p;
ngx_int_t lvl;
njs_str_t msg;
njs_value_t *value;
ngx_connection_t *c;
ngx_log_handler_pt handler;
p = njs_vm_external(vm, njs_arg(args, nargs, 0));
if (p == NULL) {
njs_vm_error(vm, "\"this\" is not an external");
return NJS_ERROR;
}
value = njs_arg(args, nargs, (level != 0) ? 1 : 2);
if (level == 0) {
if (ngx_js_integer(vm, njs_arg(args, nargs, 1), &lvl) != NGX_OK) {
return NJS_ERROR;
}
level = lvl;
}
if (ngx_js_string(vm, value, &msg) != NGX_OK) {
return NJS_ERROR;
}
c = ngx_external_connection(vm, p);
handler = c->log->handler;
c->log->handler = NULL;
ngx_log_error((ngx_uint_t) level, c->log, 0, "js: %*s",
msg.length, msg.start);
c->log->handler = handler;
njs_value_undefined_set(njs_vm_retval(vm));
return NJS_OK;
}
|
