xref: /openssl/crypto/asn1/asn_mstbl.c (revision b6461792)
1 /*
2  * Copyright 2012-2024 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 #include <stdio.h>
11 #include <openssl/crypto.h>
12 #include "internal/cryptlib.h"
13 #include <openssl/conf.h>
14 #include <openssl/x509v3.h>
15 
16 /* Multi string module: add table entries from a given section */
17 
18 static int do_tcreate(const char *value, const char *name);
19 
stbl_module_init(CONF_IMODULE * md,const CONF * cnf)20 static int stbl_module_init(CONF_IMODULE *md, const CONF *cnf)
21 {
22     int i;
23     const char *stbl_section;
24     STACK_OF(CONF_VALUE) *sktmp;
25     CONF_VALUE *mval;
26 
27     stbl_section = CONF_imodule_get_value(md);
28     if ((sktmp = NCONF_get_section(cnf, stbl_section)) == NULL) {
29         ERR_raise(ERR_LIB_ASN1, ASN1_R_ERROR_LOADING_SECTION);
30         return 0;
31     }
32     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
33         mval = sk_CONF_VALUE_value(sktmp, i);
34         if (!do_tcreate(mval->value, mval->name)) {
35             ERR_raise(ERR_LIB_ASN1, ASN1_R_INVALID_VALUE);
36             return 0;
37         }
38     }
39     return 1;
40 }
41 
stbl_module_finish(CONF_IMODULE * md)42 static void stbl_module_finish(CONF_IMODULE *md)
43 {
44     ASN1_STRING_TABLE_cleanup();
45 }
46 
ASN1_add_stable_module(void)47 void ASN1_add_stable_module(void)
48 {
49     CONF_module_add("stbl_section", stbl_module_init, stbl_module_finish);
50 }
51 
52 /*
53  * Create an table entry based on a name value pair. format is oid_name =
54  * n1:v1, n2:v2,... where name is "min", "max", "mask" or "flags".
55  */
56 
do_tcreate(const char * value,const char * name)57 static int do_tcreate(const char *value, const char *name)
58 {
59     char *eptr;
60     int nid, i, rv = 0;
61     long tbl_min = -1, tbl_max = -1;
62     unsigned long tbl_mask = 0, tbl_flags = 0;
63     STACK_OF(CONF_VALUE) *lst = NULL;
64     CONF_VALUE *cnf = NULL;
65     nid = OBJ_sn2nid(name);
66     if (nid == NID_undef)
67         nid = OBJ_ln2nid(name);
68     if (nid == NID_undef)
69         goto err;
70     lst = X509V3_parse_list(value);
71     if (!lst)
72         goto err;
73     for (i = 0; i < sk_CONF_VALUE_num(lst); i++) {
74         cnf = sk_CONF_VALUE_value(lst, i);
75         if (cnf->value == NULL)
76             goto err;
77         if (strcmp(cnf->name, "min") == 0) {
78             tbl_min = strtoul(cnf->value, &eptr, 0);
79             if (*eptr)
80                 goto err;
81         } else if (strcmp(cnf->name, "max") == 0) {
82             tbl_max = strtoul(cnf->value, &eptr, 0);
83             if (*eptr)
84                 goto err;
85         } else if (strcmp(cnf->name, "mask") == 0) {
86             if (!ASN1_str2mask(cnf->value, &tbl_mask) || !tbl_mask)
87                 goto err;
88         } else if (strcmp(cnf->name, "flags") == 0) {
89             if (strcmp(cnf->value, "nomask") == 0)
90                 tbl_flags = STABLE_NO_MASK;
91             else if (strcmp(cnf->value, "none") == 0)
92                 tbl_flags = STABLE_FLAGS_CLEAR;
93             else
94                 goto err;
95         } else
96             goto err;
97     }
98     rv = 1;
99  err:
100     if (rv == 0) {
101         if (cnf)
102             ERR_raise_data(ERR_LIB_ASN1, ASN1_R_INVALID_STRING_TABLE_VALUE,
103                            "field=%s, value=%s", cnf->name,
104                                                  cnf->value != NULL ? cnf->value
105                                                  : value);
106         else
107             ERR_raise_data(ERR_LIB_ASN1, ASN1_R_INVALID_STRING_TABLE_VALUE,
108                            "name=%s, value=%s", name, value);
109     } else {
110         rv = ASN1_STRING_TABLE_add(nid, tbl_min, tbl_max,
111                                    tbl_mask, tbl_flags);
112         if (!rv)
113             ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
114     }
115     sk_CONF_VALUE_pop_free(lst, X509V3_conf_free);
116     return rv;
117 }
118