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Commit | Line | Data |
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dfeab068 RE |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include <string.h> | |
4 | ||
ec577822 BM |
5 | #include <openssl/lhash.h> |
6 | #include <openssl/objects.h> | |
dfeab068 RE |
7 | |
8 | /* I use the ex_data stuff to manage the identifiers for the obj_name_types | |
9 | * that applications may define. I only really use the free function field. | |
10 | */ | |
11 | static LHASH *names_lh=NULL; | |
12 | static int names_type_num=OBJ_NAME_TYPE_NUM; | |
13 | static STACK *names_cmp=NULL; | |
14 | static STACK *names_hash=NULL; | |
15 | static STACK *names_free=NULL; | |
16 | ||
17 | static unsigned long obj_name_hash(OBJ_NAME *a); | |
18 | static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b); | |
19 | ||
6b691a5c | 20 | int OBJ_NAME_init(void) |
dfeab068 RE |
21 | { |
22 | if (names_lh != NULL) return(1); | |
23 | MemCheck_off(); | |
24 | names_lh=lh_new(obj_name_hash,obj_name_cmp); | |
25 | MemCheck_on(); | |
26 | return(names_lh != NULL); | |
27 | } | |
28 | ||
6b691a5c UM |
29 | int OBJ_NAME_new_index(unsigned long (*hash_func)(), int (*cmp_func)(), |
30 | void (*free_func)()) | |
dfeab068 RE |
31 | { |
32 | int ret; | |
33 | int i; | |
34 | ||
35 | if (names_free == NULL) | |
36 | { | |
37 | MemCheck_off(); | |
38 | names_hash=sk_new_null(); | |
39 | names_cmp=sk_new_null(); | |
40 | names_free=sk_new_null(); | |
41 | MemCheck_on(); | |
42 | } | |
43 | if ((names_free == NULL) || (names_hash == NULL) || (names_cmp == NULL)) | |
44 | { | |
45 | /* ERROR */ | |
46 | return(0); | |
47 | } | |
48 | ret=names_type_num; | |
49 | names_type_num++; | |
50 | for (i=sk_num(names_free); i<names_type_num; i++) | |
51 | { | |
52 | MemCheck_off(); | |
53 | sk_push(names_hash,(char *)strcmp); | |
54 | sk_push(names_cmp,(char *)lh_strhash); | |
55 | sk_push(names_free,NULL); | |
56 | MemCheck_on(); | |
57 | } | |
58 | if (hash_func != NULL) | |
59 | sk_value(names_hash,ret)=(char *)hash_func; | |
60 | if (cmp_func != NULL) | |
61 | sk_value(names_cmp,ret)= (char *)cmp_func; | |
62 | if (free_func != NULL) | |
63 | sk_value(names_free,ret)=(char *)free_func; | |
64 | return(ret); | |
65 | } | |
66 | ||
6b691a5c | 67 | static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b) |
dfeab068 RE |
68 | { |
69 | int ret; | |
70 | int (*cmp)(); | |
71 | ||
72 | ret=a->type-b->type; | |
73 | if (ret == 0) | |
74 | { | |
75 | if ((names_cmp != NULL) && (sk_num(names_cmp) > a->type)) | |
76 | { | |
77 | cmp=(int (*)())sk_value(names_cmp,a->type); | |
78 | ret=cmp(a->name,b->name); | |
79 | } | |
80 | else | |
81 | ret=strcmp(a->name,b->name); | |
82 | } | |
83 | return(ret); | |
84 | } | |
85 | ||
6b691a5c | 86 | static unsigned long obj_name_hash(OBJ_NAME *a) |
dfeab068 RE |
87 | { |
88 | unsigned long ret; | |
89 | unsigned long (*hash)(); | |
90 | ||
91 | if ((names_hash != NULL) && (sk_num(names_hash) > a->type)) | |
92 | { | |
93 | hash=(unsigned long (*)())sk_value(names_hash,a->type); | |
94 | ret=hash(a->name); | |
95 | } | |
96 | else | |
97 | { | |
98 | ret=lh_strhash(a->name); | |
99 | } | |
100 | ret^=a->type; | |
101 | return(ret); | |
102 | } | |
103 | ||
6b691a5c | 104 | const char *OBJ_NAME_get(const char *name, int type) |
dfeab068 RE |
105 | { |
106 | OBJ_NAME on,*ret; | |
107 | int num=0,alias; | |
108 | ||
109 | if (name == NULL) return(NULL); | |
110 | if ((names_lh == NULL) && !OBJ_NAME_init()) return(NULL); | |
111 | ||
112 | alias=type&OBJ_NAME_ALIAS; | |
113 | type&= ~OBJ_NAME_ALIAS; | |
114 | ||
115 | on.name=name; | |
116 | on.type=type; | |
117 | ||
118 | for (;;) | |
119 | { | |
120 | ret=(OBJ_NAME *)lh_retrieve(names_lh,(char *)&on); | |
121 | if (ret == NULL) return(NULL); | |
122 | if ((ret->alias) && !alias) | |
123 | { | |
124 | if (++num > 10) return(NULL); | |
125 | on.name=ret->data; | |
126 | } | |
127 | else | |
128 | { | |
129 | return(ret->data); | |
130 | } | |
131 | } | |
132 | } | |
133 | ||
6b691a5c | 134 | int OBJ_NAME_add(const char *name, int type, const char *data) |
dfeab068 RE |
135 | { |
136 | void (*f)(); | |
137 | OBJ_NAME *onp,*ret; | |
138 | int alias; | |
139 | ||
140 | if ((names_lh == NULL) && !OBJ_NAME_init()) return(0); | |
141 | ||
142 | alias=type&OBJ_NAME_ALIAS; | |
143 | type&= ~OBJ_NAME_ALIAS; | |
144 | ||
145 | onp=(OBJ_NAME *)Malloc(sizeof(OBJ_NAME)); | |
146 | if (onp == NULL) | |
147 | { | |
148 | /* ERROR */ | |
149 | return(0); | |
150 | } | |
151 | ||
152 | onp->name=name; | |
153 | onp->alias=alias; | |
154 | onp->type=type; | |
155 | onp->data=data; | |
156 | ||
157 | ret=(OBJ_NAME *)lh_insert(names_lh,(char *)onp); | |
158 | if (ret != NULL) | |
159 | { | |
160 | /* free things */ | |
161 | if ((names_free != NULL) && (sk_num(names_free) > ret->type)) | |
162 | { | |
163 | f=(void (*)())sk_value(names_free,ret->type); | |
164 | f(ret->name,ret->type,ret->data); | |
165 | } | |
166 | Free((char *)ret); | |
167 | } | |
168 | else | |
169 | { | |
170 | if (lh_error(names_lh)) | |
171 | { | |
172 | /* ERROR */ | |
173 | return(0); | |
174 | } | |
175 | } | |
176 | return(1); | |
177 | } | |
178 | ||
6b691a5c | 179 | int OBJ_NAME_remove(const char *name, int type) |
dfeab068 RE |
180 | { |
181 | OBJ_NAME on,*ret; | |
182 | void (*f)(); | |
183 | ||
184 | if (names_lh == NULL) return(0); | |
185 | ||
186 | type&= ~OBJ_NAME_ALIAS; | |
187 | on.name=name; | |
188 | on.type=type; | |
189 | ret=(OBJ_NAME *)lh_delete(names_lh,(char *)&on); | |
190 | if (ret != NULL) | |
191 | { | |
192 | /* free things */ | |
193 | if ((names_free != NULL) && (sk_num(names_free) > type)) | |
194 | { | |
195 | f=(void (*)())sk_value(names_free,type); | |
196 | f(ret->name,ret->type,ret->data); | |
197 | } | |
198 | Free((char *)ret); | |
199 | return(1); | |
200 | } | |
201 | else | |
202 | return(0); | |
203 | } | |
204 | ||
205 | static int free_type; | |
206 | ||
6b691a5c UM |
207 | static void names_lh_free(OBJ_NAME *onp, int type) |
208 | { | |
f9e6fac3 BL |
209 | if(onp == NULL) |
210 | return; | |
211 | ||
dfeab068 RE |
212 | if ((free_type < 0) || (free_type == onp->type)) |
213 | { | |
214 | OBJ_NAME_remove(onp->name,onp->type); | |
215 | } | |
216 | } | |
217 | ||
6b691a5c | 218 | void OBJ_NAME_cleanup(int type) |
dfeab068 RE |
219 | { |
220 | unsigned long down_load; | |
221 | ||
222 | if (names_lh == NULL) return; | |
223 | ||
224 | free_type=type; | |
225 | down_load=names_lh->down_load; | |
226 | names_lh->down_load=0; | |
227 | ||
228 | lh_doall(names_lh,names_lh_free); | |
229 | if (type < 0) | |
230 | { | |
231 | lh_free(names_lh); | |
232 | sk_free(names_hash); | |
233 | sk_free(names_cmp); | |
234 | sk_free(names_free); | |
235 | names_lh=NULL; | |
236 | names_hash=NULL; | |
237 | names_cmp=NULL; | |
238 | names_free=NULL; | |
239 | } | |
240 | else | |
241 | names_lh->down_load=down_load; | |
242 | } | |
243 |