1 /* Copyright (C) 1995-1998 Eric Young ([email protected])
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young ([email protected]).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson ([email protected]).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young ([email protected])"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson ([email protected])"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57 #include <openssl/x509.h>
58
59 #include <assert.h>
60 #include <inttypes.h>
61 #include <string.h>
62
63 #include <openssl/asn1.h>
64 #include <openssl/bio.h>
65 #include <openssl/obj.h>
66
67
maybe_write(BIO * out,const void * buf,int len)68 static int maybe_write(BIO *out, const void *buf, int len) {
69 // If |out| is NULL, ignore the output but report the length.
70 return out == NULL || BIO_write(out, buf, len) == len;
71 }
72
73 // do_indent prints |indent| spaces to |out|.
do_indent(BIO * out,int indent)74 static int do_indent(BIO *out, int indent) {
75 for (int i = 0; i < indent; i++) {
76 if (!maybe_write(out, " ", 1)) {
77 return 0;
78 }
79 }
80 return 1;
81 }
82
83 #define FN_WIDTH_LN 25
84 #define FN_WIDTH_SN 10
85
do_name_ex(BIO * out,const X509_NAME * n,int indent,unsigned long flags)86 static int do_name_ex(BIO *out, const X509_NAME *n, int indent,
87 unsigned long flags) {
88 int prev = -1, orflags;
89 char objtmp[80];
90 const char *objbuf;
91 int outlen, len;
92 const char *sep_dn, *sep_mv, *sep_eq;
93 int sep_dn_len, sep_mv_len, sep_eq_len;
94 if (indent < 0) {
95 indent = 0;
96 }
97 outlen = indent;
98 if (!do_indent(out, indent)) {
99 return -1;
100 }
101 switch (flags & XN_FLAG_SEP_MASK) {
102 case XN_FLAG_SEP_MULTILINE:
103 sep_dn = "\n";
104 sep_dn_len = 1;
105 sep_mv = " + ";
106 sep_mv_len = 3;
107 break;
108
109 case XN_FLAG_SEP_COMMA_PLUS:
110 sep_dn = ",";
111 sep_dn_len = 1;
112 sep_mv = "+";
113 sep_mv_len = 1;
114 indent = 0;
115 break;
116
117 case XN_FLAG_SEP_CPLUS_SPC:
118 sep_dn = ", ";
119 sep_dn_len = 2;
120 sep_mv = " + ";
121 sep_mv_len = 3;
122 indent = 0;
123 break;
124
125 case XN_FLAG_SEP_SPLUS_SPC:
126 sep_dn = "; ";
127 sep_dn_len = 2;
128 sep_mv = " + ";
129 sep_mv_len = 3;
130 indent = 0;
131 break;
132
133 default:
134 return -1;
135 }
136
137 if (flags & XN_FLAG_SPC_EQ) {
138 sep_eq = " = ";
139 sep_eq_len = 3;
140 } else {
141 sep_eq = "=";
142 sep_eq_len = 1;
143 }
144
145 int cnt = X509_NAME_entry_count(n);
146 for (int i = 0; i < cnt; i++) {
147 const X509_NAME_ENTRY *ent;
148 if (flags & XN_FLAG_DN_REV) {
149 ent = X509_NAME_get_entry(n, cnt - i - 1);
150 } else {
151 ent = X509_NAME_get_entry(n, i);
152 }
153 if (prev != -1) {
154 if (prev == X509_NAME_ENTRY_set(ent)) {
155 if (!maybe_write(out, sep_mv, sep_mv_len)) {
156 return -1;
157 }
158 outlen += sep_mv_len;
159 } else {
160 if (!maybe_write(out, sep_dn, sep_dn_len)) {
161 return -1;
162 }
163 outlen += sep_dn_len;
164 if (!do_indent(out, indent)) {
165 return -1;
166 }
167 outlen += indent;
168 }
169 }
170 prev = X509_NAME_ENTRY_set(ent);
171 const ASN1_OBJECT *fn = X509_NAME_ENTRY_get_object(ent);
172 const ASN1_STRING *val = X509_NAME_ENTRY_get_data(ent);
173 assert((flags & XN_FLAG_FN_MASK) == XN_FLAG_FN_SN);
174 int fn_nid = OBJ_obj2nid(fn);
175 if (fn_nid == NID_undef) {
176 OBJ_obj2txt(objtmp, sizeof(objtmp), fn, 1);
177 objbuf = objtmp;
178 } else {
179 objbuf = OBJ_nid2sn(fn_nid);
180 }
181 int objlen = strlen(objbuf);
182 if (!maybe_write(out, objbuf, objlen) ||
183 !maybe_write(out, sep_eq, sep_eq_len)) {
184 return -1;
185 }
186 outlen += objlen + sep_eq_len;
187 // If the field name is unknown then fix up the DER dump flag. We
188 // might want to limit this further so it will DER dump on anything
189 // other than a few 'standard' fields.
190 if ((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS)) {
191 orflags = ASN1_STRFLGS_DUMP_ALL;
192 } else {
193 orflags = 0;
194 }
195
196 len = ASN1_STRING_print_ex(out, val, flags | orflags);
197 if (len < 0) {
198 return -1;
199 }
200 outlen += len;
201 }
202 return outlen;
203 }
204
X509_NAME_print_ex(BIO * out,const X509_NAME * nm,int indent,unsigned long flags)205 int X509_NAME_print_ex(BIO *out, const X509_NAME *nm, int indent,
206 unsigned long flags) {
207 if (flags == XN_FLAG_COMPAT) {
208 return X509_NAME_print(out, nm, indent);
209 }
210 return do_name_ex(out, nm, indent, flags);
211 }
212
X509_NAME_print_ex_fp(FILE * fp,const X509_NAME * nm,int indent,unsigned long flags)213 int X509_NAME_print_ex_fp(FILE *fp, const X509_NAME *nm, int indent,
214 unsigned long flags) {
215 BIO *bio = NULL;
216 if (fp != NULL) {
217 // If |fp| is NULL, this function returns the number of bytes without
218 // writing.
219 bio = BIO_new_fp(fp, BIO_NOCLOSE);
220 if (bio == NULL) {
221 return -1;
222 }
223 }
224 int ret = X509_NAME_print_ex(bio, nm, indent, flags);
225 BIO_free(bio);
226 return ret;
227 }
228