1 /*        $NetBSD: name.c,v 1.3 2023/06/19 21:41:44 christos Exp $    */
2 
3 /*
4  * Copyright (c) 2004 - 2009 Kungliga Tekniska Högskolan
5  * (Royal Institute of Technology, Stockholm, Sweden).
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * 3. Neither the name of the Institute nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include "hx_locl.h"
37 #include <krb5/wind.h>
38 #include "char_map.h"
39 
40 /**
41  * @page page_name PKIX/X.509 Names
42  *
43  * There are several names in PKIX/X.509, GeneralName and Name.
44  *
45  * A Name consists of an ordered list of Relative Distinguished Names
46  * (RDN). Each RDN consists of an unordered list of typed strings. The
47  * types are defined by OID and have long and short description. For
48  * example id-at-commonName (2.5.4.3) have the long name CommonName
49  * and short name CN. The string itself can be of several encoding,
50  * UTF8, UTF16, Teltex string, etc. The type limit what encoding
51  * should be used.
52  *
53  * GeneralName is a broader nametype that can contains al kind of
54  * stuff like Name, IP addresses, partial Name, etc.
55  *
56  * Name is mapped into a hx509_name object.
57  *
58  * Parse and string name into a hx509_name object with hx509_parse_name(),
59  * make it back into string representation with hx509_name_to_string().
60  *
61  * Name string are defined rfc2253, rfc1779 and X.501.
62  *
63  * See the library functions here: @ref hx509_name
64  */
65 
66 static const struct {
67     const char *n;
68     const heim_oid *o;
69     wind_profile_flags flags;
70 } no[] = {
71     { "C", &asn1_oid_id_at_countryName, 0 },
72     { "CN", &asn1_oid_id_at_commonName, 0 },
73     { "DC", &asn1_oid_id_domainComponent, 0 },
74     { "L", &asn1_oid_id_at_localityName, 0 },
75     { "O", &asn1_oid_id_at_organizationName, 0 },
76     { "OU", &asn1_oid_id_at_organizationalUnitName, 0 },
77     { "S", &asn1_oid_id_at_stateOrProvinceName, 0 },
78     { "STREET", &asn1_oid_id_at_streetAddress, 0 },
79     { "UID", &asn1_oid_id_Userid, 0 },
80     { "emailAddress", &asn1_oid_id_pkcs9_emailAddress, 0 },
81     { "serialNumber", &asn1_oid_id_at_serialNumber, 0 }
82 };
83 
84 static char *
quote_string(const char * f,size_t len,int flags,size_t * rlen)85 quote_string(const char *f, size_t len, int flags, size_t *rlen)
86 {
87     size_t i, j, tolen;
88     const unsigned char *from = (const unsigned char *)f;
89     unsigned char *to;
90 
91     tolen = len * 3 + 1;
92     to = malloc(tolen);
93     if (to == NULL)
94           return NULL;
95 
96     for (i = 0, j = 0; i < len; i++) {
97           unsigned char map = char_map[from[i]] & flags;
98           if (i == 0 && (map & Q_RFC2253_QUOTE_FIRST)) {
99               to[j++] = '\\';
100               to[j++] = from[i];
101           } else if ((i + 1) == len && (map & Q_RFC2253_QUOTE_LAST)) {
102 
103               to[j++] = '\\';
104               to[j++] = from[i];
105           } else if (map & Q_RFC2253_QUOTE) {
106               to[j++] = '\\';
107               to[j++] = from[i];
108           } else if (map & Q_RFC2253_HEX) {
109               int l = snprintf((char *)&to[j], tolen - j - 1,
110                                    "#%02x", (unsigned char)from[i]);
111               j += l;
112           } else {
113               to[j++] = from[i];
114           }
115     }
116     to[j] = '\0';
117     assert(j < tolen);
118     *rlen = j;
119     return (char *)to;
120 }
121 
122 
123 static int
append_string(char ** str,size_t * total_len,const char * ss,size_t len,int quote)124 append_string(char **str, size_t *total_len, const char *ss,
125                 size_t len, int quote)
126 {
127     char *s, *qs;
128 
129     if (quote)
130           qs = quote_string(ss, len, Q_RFC2253, &len);
131     else
132           qs = rk_UNCONST(ss);
133 
134     s = realloc(*str, len + *total_len + 1);
135     if (s == NULL)
136           _hx509_abort("allocation failure"); /* XXX */
137     memcpy(s + *total_len, qs, len);
138     if (qs != ss)
139           free(qs);
140     s[*total_len + len] = '\0';
141     *str = s;
142     *total_len += len;
143     return 0;
144 }
145 
146 static char *
oidtostring(const heim_oid * type)147 oidtostring(const heim_oid *type)
148 {
149     char *s;
150     size_t i;
151 
152     for (i = 0; i < sizeof(no)/sizeof(no[0]); i++) {
153           if (der_heim_oid_cmp(no[i].o, type) == 0)
154               return strdup(no[i].n);
155     }
156     if (der_print_heim_oid(type, '.', &s) != 0)
157           return NULL;
158     return s;
159 }
160 
161 static int
stringtooid(const char * name,size_t len,heim_oid * oid)162 stringtooid(const char *name, size_t len, heim_oid *oid)
163 {
164     int ret;
165     size_t i;
166     char *s;
167 
168     memset(oid, 0, sizeof(*oid));
169 
170     for (i = 0; i < sizeof(no)/sizeof(no[0]); i++) {
171           if (strncasecmp(no[i].n, name, len) == 0)
172               return der_copy_oid(no[i].o, oid);
173     }
174     s = malloc(len + 1);
175     if (s == NULL)
176           return ENOMEM;
177     memcpy(s, name, len);
178     s[len] = '\0';
179     ret = der_parse_heim_oid(s, ".", oid);
180     free(s);
181     return ret;
182 }
183 
184 /**
185  * Convert the hx509 name object into a printable string.
186  * The resulting string should be freed with free().
187  *
188  * @param name name to print
189  * @param str the string to return
190  *
191  * @return An hx509 error code, see hx509_get_error_string().
192  *
193  * @ingroup hx509_name
194  */
195 
196 int
hx509_name_to_string(const hx509_name name,char ** str)197 hx509_name_to_string(const hx509_name name, char **str)
198 {
199     return _hx509_Name_to_string(&name->der_name, str);
200 }
201 
202 int
_hx509_Name_to_string(const Name * n,char ** str)203 _hx509_Name_to_string(const Name *n, char **str)
204 {
205     size_t total_len = 0;
206     size_t i, j, m;
207     int ret;
208 
209     *str = strdup("");
210     if (*str == NULL)
211           return ENOMEM;
212 
213     for (m = n->u.rdnSequence.len; m > 0; m--) {
214           size_t len;
215           i = m - 1;
216 
217           for (j = 0; j < n->u.rdnSequence.val[i].len; j++) {
218               DirectoryString *ds = &n->u.rdnSequence.val[i].val[j].value;
219               char *oidname;
220               char *ss;
221 
222               oidname = oidtostring(&n->u.rdnSequence.val[i].val[j].type);
223 
224               switch(ds->element) {
225               case choice_DirectoryString_ia5String:
226                     ss = ds->u.ia5String.data;
227                     len = ds->u.ia5String.length;
228                     break;
229               case choice_DirectoryString_printableString:
230                     ss = ds->u.printableString.data;
231                     len = ds->u.printableString.length;
232                     break;
233               case choice_DirectoryString_utf8String:
234                     ss = ds->u.utf8String;
235                     len = strlen(ss);
236                     break;
237               case choice_DirectoryString_bmpString: {
238                   const uint16_t *bmp = ds->u.bmpString.data;
239                     size_t bmplen = ds->u.bmpString.length;
240                     size_t k;
241 
242                     ret = wind_ucs2utf8_length(bmp, bmplen, &k);
243                     if (ret) {
244                     free(oidname);
245                     free(*str);
246                     *str = NULL;
247                         return ret;
248                 }
249 
250                     ss = malloc(k + 1);
251                     if (ss == NULL)
252                         _hx509_abort("allocation failure"); /* XXX */
253                     ret = wind_ucs2utf8(bmp, bmplen, ss, NULL);
254                     if (ret) {
255                     free(oidname);
256                         free(ss);
257                     free(*str);
258                     *str = NULL;
259                         return ret;
260                     }
261                     ss[k] = '\0';
262                     len = k;
263                     break;
264               }
265               case choice_DirectoryString_teletexString:
266                     ss = ds->u.teletexString;
267                     len = strlen(ss);
268                     break;
269               case choice_DirectoryString_universalString: {
270                   const uint32_t *uni = ds->u.universalString.data;
271                     size_t unilen = ds->u.universalString.length;
272                     size_t k;
273 
274                     ret = wind_ucs4utf8_length(uni, unilen, &k);
275                     if (ret) {
276                     free(oidname);
277                     free(*str);
278                     *str = NULL;
279                         return ret;
280                 }
281 
282                     ss = malloc(k + 1);
283                     if (ss == NULL)
284                         _hx509_abort("allocation failure"); /* XXX */
285                     ret = wind_ucs4utf8(uni, unilen, ss, NULL);
286                     if (ret) {
287                         free(ss);
288                     free(oidname);
289                     free(*str);
290                     *str = NULL;
291                         return ret;
292                     }
293                     ss[k] = '\0';
294                     len = k;
295                     break;
296               }
297               default:
298                     _hx509_abort("unknown directory type: %d", ds->element);
299                     exit(1);
300               }
301               append_string(str, &total_len, oidname, strlen(oidname), 0);
302               free(oidname);
303               append_string(str, &total_len, "=", 1, 0);
304               append_string(str, &total_len, ss, len, 1);
305               if (ds->element == choice_DirectoryString_bmpString ||
306                     ds->element == choice_DirectoryString_universalString)
307               {
308                     free(ss);
309               }
310               if (j + 1 < n->u.rdnSequence.val[i].len)
311                     append_string(str, &total_len, "+", 1, 0);
312           }
313 
314           if (i > 0)
315               append_string(str, &total_len, ",", 1, 0);
316     }
317     return 0;
318 }
319 
320 #define COPYCHARARRAY(_ds,_el,_l,_n)              \
321         (_l) = strlen(_ds->u._el);                \
322           (_n) = malloc((_l) * sizeof((_n)[0]));  \
323           if ((_n) == NULL)                       \
324               return ENOMEM;                      \
325           for (i = 0; i < (_l); i++)              \
326               (_n)[i] = _ds->u._el[i]
327 
328 
329 #define COPYVALARRAY(_ds,_el,_l,_n)               \
330         (_l) = _ds->u._el.length;                 \
331           (_n) = malloc((_l) * sizeof((_n)[0]));  \
332           if ((_n) == NULL)                       \
333               return ENOMEM;                      \
334           for (i = 0; i < (_l); i++)              \
335               (_n)[i] = _ds->u._el.data[i]
336 
337 #define COPYVOIDARRAY(_ds,_el,_l,_n)              \
338         (_l) = _ds->u._el.length;                 \
339           (_n) = malloc((_l) * sizeof((_n)[0]));  \
340           if ((_n) == NULL)                       \
341               return ENOMEM;                      \
342           for (i = 0; i < (_l); i++)              \
343               (_n)[i] = ((unsigned char *)_ds->u._el.data)[i]
344 
345 
346 
347 static int
dsstringprep(const DirectoryString * ds,uint32_t ** rname,size_t * rlen)348 dsstringprep(const DirectoryString *ds, uint32_t **rname, size_t *rlen)
349 {
350     wind_profile_flags flags;
351     size_t i, len;
352     int ret;
353     uint32_t *name;
354 
355     *rname = NULL;
356     *rlen = 0;
357 
358     switch(ds->element) {
359     case choice_DirectoryString_ia5String:
360           flags = WIND_PROFILE_LDAP;
361           COPYVOIDARRAY(ds, ia5String, len, name);
362           break;
363     case choice_DirectoryString_printableString:
364           flags = WIND_PROFILE_LDAP;
365           flags |= WIND_PROFILE_LDAP_CASE_EXACT_ATTRIBUTE;
366           COPYVOIDARRAY(ds, printableString, len, name);
367           break;
368     case choice_DirectoryString_teletexString:
369           flags = WIND_PROFILE_LDAP_CASE;
370           COPYCHARARRAY(ds, teletexString, len, name);
371           break;
372     case choice_DirectoryString_bmpString:
373           flags = WIND_PROFILE_LDAP;
374           COPYVALARRAY(ds, bmpString, len, name);
375           break;
376     case choice_DirectoryString_universalString:
377           flags = WIND_PROFILE_LDAP;
378           COPYVALARRAY(ds, universalString, len, name);
379           break;
380     case choice_DirectoryString_utf8String:
381           flags = WIND_PROFILE_LDAP;
382           ret = wind_utf8ucs4_length(ds->u.utf8String, &len);
383           if (ret)
384               return ret;
385           name = malloc(len * sizeof(name[0]));
386           if (name == NULL)
387               return ENOMEM;
388           ret = wind_utf8ucs4(ds->u.utf8String, name, &len);
389           if (ret) {
390               free(name);
391               return ret;
392           }
393           break;
394     default:
395           _hx509_abort("unknown directory type: %d", ds->element);
396     }
397 
398     *rlen = len;
399     /* try a couple of times to get the length right, XXX gross */
400     for (i = 0; i < 4; i++) {
401           *rlen = *rlen * 2;
402           *rname = malloc(*rlen * sizeof((*rname)[0]));
403 
404           ret = wind_stringprep(name, len, *rname, rlen, flags);
405           if (ret == WIND_ERR_OVERRUN) {
406               free(*rname);
407               *rname = NULL;
408               continue;
409           } else
410               break;
411     }
412     free(name);
413     if (ret) {
414           if (*rname)
415               free(*rname);
416           *rname = NULL;
417           *rlen = 0;
418           return ret;
419     }
420 
421     return 0;
422 }
423 
424 int
_hx509_name_ds_cmp(const DirectoryString * ds1,const DirectoryString * ds2,int * diff)425 _hx509_name_ds_cmp(const DirectoryString *ds1,
426                        const DirectoryString *ds2,
427                        int *diff)
428 {
429     uint32_t *ds1lp, *ds2lp;
430     size_t ds1len, ds2len, i;
431     int ret;
432 
433     ret = dsstringprep(ds1, &ds1lp, &ds1len);
434     if (ret)
435           return ret;
436     ret = dsstringprep(ds2, &ds2lp, &ds2len);
437     if (ret) {
438           free(ds1lp);
439           return ret;
440     }
441 
442     if (ds1len != ds2len)
443           *diff = ds1len - ds2len;
444     else {
445           for (i = 0; i < ds1len; i++) {
446               *diff = ds1lp[i] - ds2lp[i];
447               if (*diff)
448                     break;
449           }
450     }
451     free(ds1lp);
452     free(ds2lp);
453 
454     return 0;
455 }
456 
457 int
_hx509_name_cmp(const Name * n1,const Name * n2,int * c)458 _hx509_name_cmp(const Name *n1, const Name *n2, int *c)
459 {
460     int ret;
461     size_t i, j;
462 
463     *c = n1->u.rdnSequence.len - n2->u.rdnSequence.len;
464     if (*c)
465           return 0;
466 
467     for (i = 0 ; i < n1->u.rdnSequence.len; i++) {
468           *c = n1->u.rdnSequence.val[i].len - n2->u.rdnSequence.val[i].len;
469           if (*c)
470               return 0;
471 
472           for (j = 0; j < n1->u.rdnSequence.val[i].len; j++) {
473               *c = der_heim_oid_cmp(&n1->u.rdnSequence.val[i].val[j].type,
474                                           &n1->u.rdnSequence.val[i].val[j].type);
475               if (*c)
476                     return 0;
477 
478               ret = _hx509_name_ds_cmp(&n1->u.rdnSequence.val[i].val[j].value,
479                                              &n2->u.rdnSequence.val[i].val[j].value,
480                                              c);
481               if (ret)
482                     return ret;
483               if (*c)
484                     return 0;
485           }
486     }
487     *c = 0;
488     return 0;
489 }
490 
491 /**
492  * Compare to hx509 name object, useful for sorting.
493  *
494  * @param n1 a hx509 name object.
495  * @param n2 a hx509 name object.
496  *
497  * @return 0 the objects are the same, returns > 0 is n2 is "larger"
498  * then n2, < 0 if n1 is "smaller" then n2.
499  *
500  * @ingroup hx509_name
501  */
502 
503 int
hx509_name_cmp(hx509_name n1,hx509_name n2)504 hx509_name_cmp(hx509_name n1, hx509_name n2)
505 {
506     int ret, diff;
507     ret = _hx509_name_cmp(&n1->der_name, &n2->der_name, &diff);
508     if (ret)
509           return ret;
510     return diff;
511 }
512 
513 
514 int
_hx509_name_from_Name(const Name * n,hx509_name * name)515 _hx509_name_from_Name(const Name *n, hx509_name *name)
516 {
517     int ret;
518     *name = calloc(1, sizeof(**name));
519     if (*name == NULL)
520           return ENOMEM;
521     ret = copy_Name(n, &(*name)->der_name);
522     if (ret) {
523           free(*name);
524           *name = NULL;
525     }
526     return ret;
527 }
528 
529 int
_hx509_name_modify(hx509_context context,Name * name,int append,const heim_oid * oid,const char * str)530 _hx509_name_modify(hx509_context context,
531                        Name *name,
532                        int append,
533                        const heim_oid *oid,
534                        const char *str)
535 {
536     RelativeDistinguishedName *rdn;
537     int ret;
538     void *ptr;
539 
540     ptr = realloc(name->u.rdnSequence.val,
541                       sizeof(name->u.rdnSequence.val[0]) *
542                       (name->u.rdnSequence.len + 1));
543     if (ptr == NULL) {
544           hx509_set_error_string(context, 0, ENOMEM, "Out of memory");
545           return ENOMEM;
546     }
547     name->u.rdnSequence.val = ptr;
548 
549     if (append) {
550           rdn = &name->u.rdnSequence.val[name->u.rdnSequence.len];
551     } else {
552           memmove(&name->u.rdnSequence.val[1],
553                     &name->u.rdnSequence.val[0],
554                     name->u.rdnSequence.len *
555                     sizeof(name->u.rdnSequence.val[0]));
556 
557           rdn = &name->u.rdnSequence.val[0];
558     }
559     rdn->val = malloc(sizeof(rdn->val[0]));
560     if (rdn->val == NULL)
561           return ENOMEM;
562     rdn->len = 1;
563     ret = der_copy_oid(oid, &rdn->val[0].type);
564     if (ret)
565           return ret;
566     rdn->val[0].value.element = choice_DirectoryString_utf8String;
567     rdn->val[0].value.u.utf8String = strdup(str);
568     if (rdn->val[0].value.u.utf8String == NULL)
569           return ENOMEM;
570     name->u.rdnSequence.len += 1;
571 
572     return 0;
573 }
574 
575 /**
576  * Parse a string into a hx509 name object.
577  *
578  * @param context A hx509 context.
579  * @param str a string to parse.
580  * @param name the resulting object, NULL in case of error.
581  *
582  * @return An hx509 error code, see hx509_get_error_string().
583  *
584  * @ingroup hx509_name
585  */
586 
587 int
hx509_parse_name(hx509_context context,const char * str,hx509_name * name)588 hx509_parse_name(hx509_context context, const char *str, hx509_name *name)
589 {
590     const char *p, *q;
591     size_t len;
592     hx509_name n;
593     int ret;
594 
595     *name = NULL;
596 
597     n = calloc(1, sizeof(*n));
598     if (n == NULL) {
599           hx509_set_error_string(context, 0, ENOMEM, "out of memory");
600           return ENOMEM;
601     }
602 
603     n->der_name.element = choice_Name_rdnSequence;
604 
605     p = str;
606 
607     while (p != NULL && *p != '\0') {
608           heim_oid oid;
609           int last;
610 
611           q = strchr(p, ',');
612           if (q) {
613               len = (q - p);
614               last = 1;
615           } else {
616               len = strlen(p);
617               last = 0;
618           }
619 
620           q = strchr(p, '=');
621           if (q == NULL) {
622               ret = HX509_PARSING_NAME_FAILED;
623               hx509_set_error_string(context, 0, ret, "missing = in %s", p);
624               goto out;
625           }
626           if (q == p) {
627               ret = HX509_PARSING_NAME_FAILED;
628               hx509_set_error_string(context, 0, ret,
629                                            "missing name before = in %s", p);
630               goto out;
631           }
632 
633           if ((size_t)(q - p) > len) {
634               ret = HX509_PARSING_NAME_FAILED;
635               hx509_set_error_string(context, 0, ret, " = after , in %s", p);
636               goto out;
637           }
638 
639           ret = stringtooid(p, q - p, &oid);
640           if (ret) {
641               ret = HX509_PARSING_NAME_FAILED;
642               hx509_set_error_string(context, 0, ret,
643                                            "unknown type: %.*s", (int)(q - p), p);
644               goto out;
645           }
646 
647           {
648               size_t pstr_len = len - (q - p) - 1;
649               const char *pstr = p + (q - p) + 1;
650               char *r;
651 
652               r = malloc(pstr_len + 1);
653               if (r == NULL) {
654                     der_free_oid(&oid);
655                     ret = ENOMEM;
656                     hx509_set_error_string(context, 0, ret, "out of memory");
657                     goto out;
658               }
659               memcpy(r, pstr, pstr_len);
660               r[pstr_len] = '\0';
661 
662               ret = _hx509_name_modify(context, &n->der_name, 0, &oid, r);
663               free(r);
664               der_free_oid(&oid);
665               if(ret)
666                     goto out;
667           }
668           p += len + last;
669     }
670 
671     *name = n;
672 
673     return 0;
674 out:
675     hx509_name_free(&n);
676     return HX509_NAME_MALFORMED;
677 }
678 
679 /**
680  * Copy a hx509 name object.
681  *
682  * @param context A hx509 cotext.
683  * @param from the name to copy from
684  * @param to the name to copy to
685  *
686  * @return An hx509 error code, see hx509_get_error_string().
687  *
688  * @ingroup hx509_name
689  */
690 
691 int
hx509_name_copy(hx509_context context,const hx509_name from,hx509_name * to)692 hx509_name_copy(hx509_context context, const hx509_name from, hx509_name *to)
693 {
694     int ret;
695 
696     *to = calloc(1, sizeof(**to));
697     if (*to == NULL)
698           return ENOMEM;
699     ret = copy_Name(&from->der_name, &(*to)->der_name);
700     if (ret) {
701           free(*to);
702           *to = NULL;
703           return ENOMEM;
704     }
705     return 0;
706 }
707 
708 /**
709  * Convert a hx509_name into a Name.
710  *
711  * @param from the name to copy from
712  * @param to the name to copy to
713  *
714  * @return An hx509 error code, see hx509_get_error_string().
715  *
716  * @ingroup hx509_name
717  */
718 
719 int
hx509_name_to_Name(const hx509_name from,Name * to)720 hx509_name_to_Name(const hx509_name from, Name *to)
721 {
722     return copy_Name(&from->der_name, to);
723 }
724 
725 int
hx509_name_normalize(hx509_context context,hx509_name name)726 hx509_name_normalize(hx509_context context, hx509_name name)
727 {
728     return 0;
729 }
730 
731 /**
732  * Expands variables in the name using env. Variables are on the form
733  * ${name}. Useful when dealing with certificate templates.
734  *
735  * @param context A hx509 cotext.
736  * @param name the name to expand.
737  * @param env environment variable to expand.
738  *
739  * @return An hx509 error code, see hx509_get_error_string().
740  *
741  * @ingroup hx509_name
742  */
743 
744 int
hx509_name_expand(hx509_context context,hx509_name name,hx509_env env)745 hx509_name_expand(hx509_context context,
746                       hx509_name name,
747                       hx509_env env)
748 {
749     Name *n = &name->der_name;
750     size_t i, j;
751 
752     if (env == NULL)
753           return 0;
754 
755     if (n->element != choice_Name_rdnSequence) {
756           hx509_set_error_string(context, 0, EINVAL, "RDN not of supported type");
757           return EINVAL;
758     }
759 
760     for (i = 0 ; i < n->u.rdnSequence.len; i++) {
761           for (j = 0; j < n->u.rdnSequence.val[i].len; j++) {
762               /** Only UTF8String rdnSequence names are allowed */
763               /*
764                 THIS SHOULD REALLY BE:
765                 COMP = n->u.rdnSequence.val[i].val[j];
766                 normalize COMP to utf8
767                 check if there are variables
768                   expand variables
769                   convert back to orignal format, store in COMP
770                 free normalized utf8 string
771               */
772               DirectoryString *ds = &n->u.rdnSequence.val[i].val[j].value;
773               char *p, *p2;
774               struct rk_strpool *strpool = NULL;
775 
776               if (ds->element != choice_DirectoryString_utf8String) {
777                     hx509_set_error_string(context, 0, EINVAL, "unsupported type");
778                     return EINVAL;
779               }
780               p = strstr(ds->u.utf8String, "${");
781               if (p) {
782                     strpool = rk_strpoolprintf(strpool, "%.*s",
783                                                      (int)(p - ds->u.utf8String),
784                                                      ds->u.utf8String);
785                     if (strpool == NULL) {
786                         hx509_set_error_string(context, 0, ENOMEM, "out of memory");
787                         return ENOMEM;
788                     }
789               }
790               while (p != NULL) {
791                     /* expand variables */
792                     const char *value;
793                     p2 = strchr(p, '}');
794                     if (p2 == NULL) {
795                         hx509_set_error_string(context, 0, EINVAL, "missing }");
796                         rk_strpoolfree(strpool);
797                         return EINVAL;
798                     }
799                     p += 2;
800                     value = hx509_env_lfind(context, env, p, p2 - p);
801                     if (value == NULL) {
802                         hx509_set_error_string(context, 0, EINVAL,
803                                                      "variable %.*s missing",
804                                                      (int)(p2 - p), p);
805                         rk_strpoolfree(strpool);
806                         return EINVAL;
807                     }
808                     strpool = rk_strpoolprintf(strpool, "%s", value);
809                     if (strpool == NULL) {
810                         hx509_set_error_string(context, 0, ENOMEM, "out of memory");
811                         return ENOMEM;
812                     }
813                     p2++;
814 
815                     p = strstr(p2, "${");
816                     if (p)
817                         strpool = rk_strpoolprintf(strpool, "%.*s",
818                                                          (int)(p - p2), p2);
819                     else
820                         strpool = rk_strpoolprintf(strpool, "%s", p2);
821                     if (strpool == NULL) {
822                         hx509_set_error_string(context, 0, ENOMEM, "out of memory");
823                         return ENOMEM;
824                     }
825               }
826               if (strpool) {
827                     free(ds->u.utf8String);
828                     ds->u.utf8String = rk_strpoolcollect(strpool);
829                     if (ds->u.utf8String == NULL) {
830                         hx509_set_error_string(context, 0, ENOMEM, "out of memory");
831                         return ENOMEM;
832                     }
833               }
834           }
835     }
836     return 0;
837 }
838 
839 /**
840  * Free a hx509 name object, upond return *name will be NULL.
841  *
842  * @param name a hx509 name object to be freed.
843  *
844  * @ingroup hx509_name
845  */
846 
847 void
hx509_name_free(hx509_name * name)848 hx509_name_free(hx509_name *name)
849 {
850     free_Name(&(*name)->der_name);
851     memset(*name, 0, sizeof(**name));
852     free(*name);
853     *name = NULL;
854 }
855 
856 /**
857  * Convert a DER encoded name info a string.
858  *
859  * @param data data to a DER/BER encoded name
860  * @param length length of data
861  * @param str the resulting string, is NULL on failure.
862  *
863  * @return An hx509 error code, see hx509_get_error_string().
864  *
865  * @ingroup hx509_name
866  */
867 
868 int
hx509_unparse_der_name(const void * data,size_t length,char ** str)869 hx509_unparse_der_name(const void *data, size_t length, char **str)
870 {
871     Name name;
872     int ret;
873 
874     *str = NULL;
875 
876     ret = decode_Name(data, length, &name, NULL);
877     if (ret)
878           return ret;
879     ret = _hx509_Name_to_string(&name, str);
880     free_Name(&name);
881     return ret;
882 }
883 
884 /**
885  * Convert a hx509_name object to DER encoded name.
886  *
887  * @param name name to concert
888  * @param os data to a DER encoded name, free the resulting octet
889  * string with hx509_xfree(os->data).
890  *
891  * @return An hx509 error code, see hx509_get_error_string().
892  *
893  * @ingroup hx509_name
894  */
895 
896 int
hx509_name_binary(const hx509_name name,heim_octet_string * os)897 hx509_name_binary(const hx509_name name, heim_octet_string *os)
898 {
899     size_t size;
900     int ret;
901 
902     ASN1_MALLOC_ENCODE(Name, os->data, os->length, &name->der_name, &size, ret);
903     if (ret)
904           return ret;
905     if (os->length != size)
906           _hx509_abort("internal ASN.1 encoder error");
907 
908     return 0;
909 }
910 
911 int
_hx509_unparse_Name(const Name * aname,char ** str)912 _hx509_unparse_Name(const Name *aname, char **str)
913 {
914     hx509_name name;
915     int ret;
916 
917     ret = _hx509_name_from_Name(aname, &name);
918     if (ret)
919           return ret;
920 
921     ret = hx509_name_to_string(name, str);
922     hx509_name_free(&name);
923     return ret;
924 }
925 
926 /**
927  * Unparse the hx509 name in name into a string.
928  *
929  * @param name the name to check if its empty/null.
930  *
931  * @return non zero if the name is empty/null.
932  *
933  * @ingroup hx509_name
934  */
935 
936 int
hx509_name_is_null_p(const hx509_name name)937 hx509_name_is_null_p(const hx509_name name)
938 {
939     return name->der_name.u.rdnSequence.len == 0;
940 }
941 
942 /**
943  * Unparse the hx509 name in name into a string.
944  *
945  * @param name the name to print
946  * @param str an allocated string returns the name in string form
947  *
948  * @return An hx509 error code, see hx509_get_error_string().
949  *
950  * @ingroup hx509_name
951  */
952 
953 int
hx509_general_name_unparse(GeneralName * name,char ** str)954 hx509_general_name_unparse(GeneralName *name, char **str)
955 {
956     struct rk_strpool *strpool = NULL;
957     int ret = 0;
958 
959     *str = NULL;
960 
961     switch (name->element) {
962     case choice_GeneralName_otherName: {
963           char *oid;
964           hx509_oid_sprint(&name->u.otherName.type_id, &oid);
965           if (oid == NULL)
966               return ENOMEM;
967           strpool = rk_strpoolprintf(strpool, "otherName: %s", oid);
968           free(oid);
969           break;
970     }
971     case choice_GeneralName_rfc822Name:
972           strpool = rk_strpoolprintf(strpool, "rfc822Name: %.*s\n",
973                                            (int)name->u.rfc822Name.length,
974                                            (char *)name->u.rfc822Name.data);
975           break;
976     case choice_GeneralName_dNSName:
977           strpool = rk_strpoolprintf(strpool, "dNSName: %.*s\n",
978                                            (int)name->u.dNSName.length,
979                                            (char *)name->u.dNSName.data);
980           break;
981     case choice_GeneralName_directoryName: {
982           Name dir;
983           char *s;
984           memset(&dir, 0, sizeof(dir));
985           dir.element = (enum Name_enum)name->u.directoryName.element;
986           dir.u.rdnSequence = name->u.directoryName.u.rdnSequence;
987           ret = _hx509_unparse_Name(&dir, &s);
988           if (ret)
989               return ret;
990           strpool = rk_strpoolprintf(strpool, "directoryName: %s", s);
991           free(s);
992           break;
993     }
994     case choice_GeneralName_uniformResourceIdentifier:
995           strpool = rk_strpoolprintf(strpool, "URI: %.*s",
996                                            (int)name->u.uniformResourceIdentifier.length,
997                                            (char *)name->u.uniformResourceIdentifier.data);
998           break;
999     case choice_GeneralName_iPAddress: {
1000           unsigned char *a = name->u.iPAddress.data;
1001 
1002           strpool = rk_strpoolprintf(strpool, "IPAddress: ");
1003           if (strpool == NULL)
1004               break;
1005           if (name->u.iPAddress.length == 4)
1006               strpool = rk_strpoolprintf(strpool, "%d.%d.%d.%d",
1007                                                a[0], a[1], a[2], a[3]);
1008           else if (name->u.iPAddress.length == 16)
1009               strpool = rk_strpoolprintf(strpool,
1010                                                "%02X:%02X:%02X:%02X:"
1011                                                "%02X:%02X:%02X:%02X:"
1012                                                "%02X:%02X:%02X:%02X:"
1013                                                "%02X:%02X:%02X:%02X",
1014                                                a[0], a[1], a[2], a[3],
1015                                                a[4], a[5], a[6], a[7],
1016                                                a[8], a[9], a[10], a[11],
1017                                                a[12], a[13], a[14], a[15]);
1018           else
1019               strpool = rk_strpoolprintf(strpool,
1020                                                "unknown IP address of length %lu",
1021                                                (unsigned long)name->u.iPAddress.length);
1022           break;
1023     }
1024     case choice_GeneralName_registeredID: {
1025           char *oid;
1026           hx509_oid_sprint(&name->u.registeredID, &oid);
1027           if (oid == NULL)
1028               return ENOMEM;
1029           strpool = rk_strpoolprintf(strpool, "registeredID: %s", oid);
1030           free(oid);
1031           break;
1032     }
1033     default:
1034           return EINVAL;
1035     }
1036     if (ret)
1037         rk_strpoolfree(strpool);
1038     else if (strpool == NULL || (*str = rk_strpoolcollect(strpool)) == NULL)
1039           return ENOMEM;
1040     return ret;
1041 }
1042