/
ngx_tcl_var.c
191 lines (146 loc) · 4.55 KB
/
ngx_tcl_var.c
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
/*
* vim:set sts=4 sw=4 et sta:
*/
#include <tcl.h>
#include <ngx_http.h>
#include "ngx_tcl.h"
#include "ngx_tcl_var.h"
extern ngx_module_t ngx_tcl_module;
#define getrequest(C) ((ngx_tcl_interp_conf_t*)(C))->request
#define vartype_get_hash(O) ((O)->internalRep.ptrAndLongRep.value)
#define vartype_get_name(O) ((O)->internalRep.ptrAndLongRep.ptr)
#define vartype_get_namelen(O) Tcl_GetCharLength(O)
static int SetVarFromAny(Tcl_Interp *interp, Tcl_Obj *obj);
static void FreeVar(Tcl_Obj*);
static Tcl_ObjType ngxVarType = {
"ngxvar",
FreeVar, /* freeIntRepProc */
NULL, /* dupIntRepProc */
NULL, /* updateStringProc */
SetVarFromAny /* setFromAnyProc */
};
static void
FreeVar(Tcl_Obj *obj)
{
ckfree(obj->internalRep.ptrAndLongRep.ptr);
}
static int
SetVarFromAny(Tcl_Interp *interp, Tcl_Obj *obj)
{
int varlen;
ngx_uint_t hash;
char *lowcase;
char *varname;
if (obj->typePtr != &ngxVarType) {
varname = Tcl_GetStringFromObj(obj, &varlen);
lowcase = ckalloc(varlen);
if (lowcase == NULL) {
return TCL_ERROR;
}
hash = ngx_hash_strlow((u_char*)lowcase, (u_char*)varname, varlen);
if (obj->typePtr != NULL && obj->typePtr->freeIntRepProc != NULL) {
obj->typePtr->freeIntRepProc(obj);
}
obj->internalRep.ptrAndLongRep.ptr = lowcase;
obj->internalRep.ptrAndLongRep.value = hash;
obj->typePtr = &ngxVarType;
}
return TCL_OK;
}
int
ngx_http_tcl_getv_cmd(ClientData clientData, Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[])
{
ngx_http_request_t *r = getrequest(clientData);
ngx_http_variable_value_t *vv;
Tcl_Obj *varObj;
ngx_str_t varname;
int rc;
int len;
if (objc < 2 || objc > 3) {
Tcl_WrongNumArgs(interp, 1, objv, "varname ?default?");
return TCL_ERROR;
}
varObj = objv[1];
/* TODO: check return */
rc = SetVarFromAny(interp, varObj);
if (rc != TCL_OK) {
return rc;
}
Tcl_GetStringFromObj(varObj, &len);
varname.len = len;
varname.data = (u_char*)varObj->internalRep.ptrAndLongRep.ptr;
vv = ngx_http_get_variable(r, &varname, vartype_get_hash(varObj));
if (vv->not_found) {
if (objc == 3) {
Tcl_SetObjResult(interp, objv[2]);
return TCL_OK;
}
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "variable \"", Tcl_GetString(varObj),
"\" doesn't exist", NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_NewStringObj((char*)vv->data, vv->len));
return TCL_OK;
}
int
ngx_http_tcl_setv_cmd(ClientData clientData, Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *varObj;
Tcl_Obj *valObj;
ngx_http_request_t *r = getrequest(clientData);
ngx_http_core_main_conf_t *cmcf;
ngx_http_variable_t *v;
ngx_http_variable_value_t *vv;
int len;
int rc;
if (objc != 3) {
Tcl_WrongNumArgs(interp, 1, objv, "key value");
return TCL_ERROR;
}
varObj = objv[1];
valObj = objv[2];
rc = SetVarFromAny(interp, varObj);
if (rc != TCL_OK) {
return rc;
}
cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
v = ngx_hash_find(&cmcf->variables_hash, vartype_get_hash(varObj),
vartype_get_name(varObj), vartype_get_namelen(varObj));
if (v == NULL) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "variable \"", Tcl_GetString(varObj),
"\" not found", NULL);
return TCL_ERROR;
}
if (v->flags & NGX_HTTP_VAR_CHANGEABLE) {
if (v->set_handler != NULL) {
vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
if (vv == NULL) {
return TCL_ERROR;
}
vv->valid = 1;
vv->not_found = 0;
vv->no_cacheable = 0;
vv->data = (u_char*)Tcl_GetStringFromObj(valObj, &len);
vv->len = len;
v->set_handler(r, vv, v->data);
return TCL_OK;
}
if (v->flags & NGX_HTTP_VAR_INDEXED) {
vv = &r->variables[v->index];
vv->valid = 1;
vv->not_found = 0;
vv->no_cacheable = 0;
vv->data = (u_char*)Tcl_GetStringFromObj(valObj, &len);
vv->len = len;
return TCL_OK;
}
}
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "variable \"", Tcl_GetString(varObj),
"\" is not changeable", NULL);
return TCL_ERROR;
}