| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] */ |
| |
| #include <openssl/x509.h> |
| |
| #include <string.h> |
| |
| #include <openssl/asn1.h> |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| #include <openssl/x509v3.h> |
| |
| #include "../internal.h" |
| |
| /* |
| * Although this file is in crypto/x509 for layering purposes, it emits |
| * errors from the ASN.1 module for OpenSSL compatibility. |
| */ |
| |
| #define ASN1_GEN_FLAG 0x10000 |
| #define ASN1_GEN_FLAG_IMP (ASN1_GEN_FLAG|1) |
| #define ASN1_GEN_FLAG_EXP (ASN1_GEN_FLAG|2) |
| #define ASN1_GEN_FLAG_TAG (ASN1_GEN_FLAG|3) |
| #define ASN1_GEN_FLAG_BITWRAP (ASN1_GEN_FLAG|4) |
| #define ASN1_GEN_FLAG_OCTWRAP (ASN1_GEN_FLAG|5) |
| #define ASN1_GEN_FLAG_SEQWRAP (ASN1_GEN_FLAG|6) |
| #define ASN1_GEN_FLAG_SETWRAP (ASN1_GEN_FLAG|7) |
| #define ASN1_GEN_FLAG_FORMAT (ASN1_GEN_FLAG|8) |
| |
| #define ASN1_GEN_STR(str,val) {str, sizeof(str) - 1, val} |
| |
| #define ASN1_FLAG_EXP_MAX 20 |
| |
| /* Input formats */ |
| |
| /* ASCII: default */ |
| #define ASN1_GEN_FORMAT_ASCII 1 |
| /* UTF8 */ |
| #define ASN1_GEN_FORMAT_UTF8 2 |
| /* Hex */ |
| #define ASN1_GEN_FORMAT_HEX 3 |
| /* List of bits */ |
| #define ASN1_GEN_FORMAT_BITLIST 4 |
| |
| struct tag_name_st { |
| const char *strnam; |
| int len; |
| int tag; |
| }; |
| |
| typedef struct { |
| int exp_tag; |
| int exp_class; |
| int exp_constructed; |
| int exp_pad; |
| long exp_len; |
| } tag_exp_type; |
| |
| typedef struct { |
| int imp_tag; |
| int imp_class; |
| int utype; |
| int format; |
| const char *str; |
| tag_exp_type exp_list[ASN1_FLAG_EXP_MAX]; |
| int exp_count; |
| } tag_exp_arg; |
| |
| static int bitstr_cb(const char *elem, int len, void *bitstr); |
| static int asn1_cb(const char *elem, int len, void *bitstr); |
| static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, |
| int exp_constructed, int exp_pad, int imp_ok); |
| static int parse_tagging(const char *vstart, int vlen, int *ptag, |
| int *pclass); |
| static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf); |
| static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype); |
| static int asn1_str2tag(const char *tagstr, int len); |
| |
| ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf) |
| { |
| X509V3_CTX cnf; |
| |
| if (!nconf) |
| return ASN1_generate_v3(str, NULL); |
| |
| X509V3_set_nconf(&cnf, nconf); |
| return ASN1_generate_v3(str, &cnf); |
| } |
| |
| ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf) |
| { |
| ASN1_TYPE *ret; |
| tag_exp_arg asn1_tags; |
| tag_exp_type *etmp; |
| |
| int i, len; |
| |
| unsigned char *orig_der = NULL, *new_der = NULL; |
| const unsigned char *cpy_start; |
| unsigned char *p; |
| const unsigned char *cp; |
| int cpy_len; |
| long hdr_len = 0; |
| int hdr_constructed = 0, hdr_tag, hdr_class; |
| int r; |
| |
| asn1_tags.imp_tag = -1; |
| asn1_tags.imp_class = -1; |
| asn1_tags.format = ASN1_GEN_FORMAT_ASCII; |
| asn1_tags.exp_count = 0; |
| if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0) |
| return NULL; |
| |
| if ((asn1_tags.utype == V_ASN1_SEQUENCE) |
| || (asn1_tags.utype == V_ASN1_SET)) { |
| if (!cnf) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG); |
| return NULL; |
| } |
| ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf); |
| } else |
| ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype); |
| |
| if (!ret) |
| return NULL; |
| |
| /* If no tagging return base type */ |
| if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0)) |
| return ret; |
| |
| /* Generate the encoding */ |
| cpy_len = i2d_ASN1_TYPE(ret, &orig_der); |
| ASN1_TYPE_free(ret); |
| ret = NULL; |
| /* Set point to start copying for modified encoding */ |
| cpy_start = orig_der; |
| |
| /* Do we need IMPLICIT tagging? */ |
| if (asn1_tags.imp_tag != -1) { |
| /* If IMPLICIT we will replace the underlying tag */ |
| /* Skip existing tag+len */ |
| r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class, |
| cpy_len); |
| if (r & 0x80) |
| goto err; |
| /* Update copy length */ |
| cpy_len -= cpy_start - orig_der; |
| /* |
| * For IMPLICIT tagging the length should match the original length |
| * and constructed flag should be consistent. |
| */ |
| if (r & 0x1) { |
| /* Indefinite length constructed */ |
| hdr_constructed = 2; |
| hdr_len = 0; |
| } else |
| /* Just retain constructed flag */ |
| hdr_constructed = r & V_ASN1_CONSTRUCTED; |
| /* |
| * Work out new length with IMPLICIT tag: ignore constructed because |
| * it will mess up if indefinite length |
| */ |
| len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag); |
| } else |
| len = cpy_len; |
| |
| /* Work out length in any EXPLICIT, starting from end */ |
| |
| for (i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1; |
| i < asn1_tags.exp_count; i++, etmp--) { |
| /* Content length: number of content octets + any padding */ |
| len += etmp->exp_pad; |
| etmp->exp_len = len; |
| /* Total object length: length including new header */ |
| len = ASN1_object_size(0, len, etmp->exp_tag); |
| } |
| |
| /* Allocate buffer for new encoding */ |
| |
| new_der = OPENSSL_malloc(len); |
| if (!new_der) |
| goto err; |
| |
| /* Generate tagged encoding */ |
| |
| p = new_der; |
| |
| /* Output explicit tags first */ |
| |
| for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count; |
| i++, etmp++) { |
| ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len, |
| etmp->exp_tag, etmp->exp_class); |
| if (etmp->exp_pad) |
| *p++ = 0; |
| } |
| |
| /* If IMPLICIT, output tag */ |
| |
| if (asn1_tags.imp_tag != -1) { |
| if (asn1_tags.imp_class == V_ASN1_UNIVERSAL |
| && (asn1_tags.imp_tag == V_ASN1_SEQUENCE |
| || asn1_tags.imp_tag == V_ASN1_SET)) |
| hdr_constructed = V_ASN1_CONSTRUCTED; |
| ASN1_put_object(&p, hdr_constructed, hdr_len, |
| asn1_tags.imp_tag, asn1_tags.imp_class); |
| } |
| |
| /* Copy across original encoding */ |
| memcpy(p, cpy_start, cpy_len); |
| |
| cp = new_der; |
| |
| /* Obtain new ASN1_TYPE structure */ |
| ret = d2i_ASN1_TYPE(NULL, &cp, len); |
| |
| err: |
| if (orig_der) |
| OPENSSL_free(orig_der); |
| if (new_der) |
| OPENSSL_free(new_der); |
| |
| return ret; |
| |
| } |
| |
| static int asn1_cb(const char *elem, int len, void *bitstr) |
| { |
| tag_exp_arg *arg = bitstr; |
| int i; |
| int utype; |
| int vlen = 0; |
| const char *p, *vstart = NULL; |
| |
| int tmp_tag, tmp_class; |
| |
| if (elem == NULL) |
| return 0; |
| |
| for (i = 0, p = elem; i < len; p++, i++) { |
| /* Look for the ':' in name value pairs */ |
| if (*p == ':') { |
| vstart = p + 1; |
| vlen = len - (vstart - elem); |
| len = p - elem; |
| break; |
| } |
| } |
| |
| utype = asn1_str2tag(elem, len); |
| |
| if (utype == -1) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_TAG); |
| ERR_add_error_data(2, "tag=", elem); |
| return -1; |
| } |
| |
| /* If this is not a modifier mark end of string and exit */ |
| if (!(utype & ASN1_GEN_FLAG)) { |
| arg->utype = utype; |
| arg->str = vstart; |
| /* If no value and not end of string, error */ |
| if (!vstart && elem[len]) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_VALUE); |
| return -1; |
| } |
| return 0; |
| } |
| |
| switch (utype) { |
| |
| case ASN1_GEN_FLAG_IMP: |
| /* Check for illegal multiple IMPLICIT tagging */ |
| if (arg->imp_tag != -1) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NESTED_TAGGING); |
| return -1; |
| } |
| if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class)) |
| return -1; |
| break; |
| |
| case ASN1_GEN_FLAG_EXP: |
| |
| if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class)) |
| return -1; |
| if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0)) |
| return -1; |
| break; |
| |
| case ASN1_GEN_FLAG_SEQWRAP: |
| if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1)) |
| return -1; |
| break; |
| |
| case ASN1_GEN_FLAG_SETWRAP: |
| if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1)) |
| return -1; |
| break; |
| |
| case ASN1_GEN_FLAG_BITWRAP: |
| if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1)) |
| return -1; |
| break; |
| |
| case ASN1_GEN_FLAG_OCTWRAP: |
| if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1)) |
| return -1; |
| break; |
| |
| case ASN1_GEN_FLAG_FORMAT: |
| if (!vstart) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT); |
| return -1; |
| } |
| if (!strncmp(vstart, "ASCII", 5)) |
| arg->format = ASN1_GEN_FORMAT_ASCII; |
| else if (!strncmp(vstart, "UTF8", 4)) |
| arg->format = ASN1_GEN_FORMAT_UTF8; |
| else if (!strncmp(vstart, "HEX", 3)) |
| arg->format = ASN1_GEN_FORMAT_HEX; |
| else if (!strncmp(vstart, "BITLIST", 7)) |
| arg->format = ASN1_GEN_FORMAT_BITLIST; |
| else { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT); |
| return -1; |
| } |
| break; |
| |
| } |
| |
| return 1; |
| |
| } |
| |
| static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass) |
| { |
| char erch[2]; |
| long tag_num; |
| char *eptr; |
| if (!vstart) |
| return 0; |
| tag_num = strtoul(vstart, &eptr, 10); |
| /* Check we haven't gone past max length: should be impossible */ |
| if (eptr && *eptr && (eptr > vstart + vlen)) |
| return 0; |
| if (tag_num < 0) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_NUMBER); |
| return 0; |
| } |
| *ptag = tag_num; |
| /* If we have non numeric characters, parse them */ |
| if (eptr) |
| vlen -= eptr - vstart; |
| else |
| vlen = 0; |
| if (vlen) { |
| switch (*eptr) { |
| |
| case 'U': |
| *pclass = V_ASN1_UNIVERSAL; |
| break; |
| |
| case 'A': |
| *pclass = V_ASN1_APPLICATION; |
| break; |
| |
| case 'P': |
| *pclass = V_ASN1_PRIVATE; |
| break; |
| |
| case 'C': |
| *pclass = V_ASN1_CONTEXT_SPECIFIC; |
| break; |
| |
| default: |
| erch[0] = *eptr; |
| erch[1] = 0; |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_MODIFIER); |
| ERR_add_error_data(2, "Char=", erch); |
| return 0; |
| break; |
| |
| } |
| } else |
| *pclass = V_ASN1_CONTEXT_SPECIFIC; |
| |
| return 1; |
| |
| } |
| |
| /* Handle multiple types: SET and SEQUENCE */ |
| |
| static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf) |
| { |
| ASN1_TYPE *ret = NULL; |
| STACK_OF(ASN1_TYPE) *sk = NULL; |
| STACK_OF(CONF_VALUE) *sect = NULL; |
| unsigned char *der = NULL; |
| int derlen; |
| size_t i; |
| sk = sk_ASN1_TYPE_new_null(); |
| if (!sk) |
| goto bad; |
| if (section) { |
| if (!cnf) |
| goto bad; |
| sect = X509V3_get_section(cnf, (char *)section); |
| if (!sect) |
| goto bad; |
| for (i = 0; i < sk_CONF_VALUE_num(sect); i++) { |
| ASN1_TYPE *typ = |
| ASN1_generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf); |
| if (!typ) |
| goto bad; |
| if (!sk_ASN1_TYPE_push(sk, typ)) |
| goto bad; |
| } |
| } |
| |
| /* |
| * Now we has a STACK of the components, convert to the correct form |
| */ |
| |
| if (utype == V_ASN1_SET) |
| derlen = i2d_ASN1_SET_ANY(sk, &der); |
| else |
| derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der); |
| |
| if (derlen < 0) |
| goto bad; |
| |
| if (!(ret = ASN1_TYPE_new())) |
| goto bad; |
| |
| if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype))) |
| goto bad; |
| |
| ret->type = utype; |
| |
| ret->value.asn1_string->data = der; |
| ret->value.asn1_string->length = derlen; |
| |
| der = NULL; |
| |
| bad: |
| |
| if (der) |
| OPENSSL_free(der); |
| |
| if (sk) |
| sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free); |
| if (sect) |
| X509V3_section_free(cnf, sect); |
| |
| return ret; |
| } |
| |
| static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, |
| int exp_constructed, int exp_pad, int imp_ok) |
| { |
| tag_exp_type *exp_tmp; |
| /* Can only have IMPLICIT if permitted */ |
| if ((arg->imp_tag != -1) && !imp_ok) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_IMPLICIT_TAG); |
| return 0; |
| } |
| |
| if (arg->exp_count == ASN1_FLAG_EXP_MAX) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_DEPTH_EXCEEDED); |
| return 0; |
| } |
| |
| exp_tmp = &arg->exp_list[arg->exp_count++]; |
| |
| /* |
| * If IMPLICIT set tag to implicit value then reset implicit tag since it |
| * has been used. |
| */ |
| if (arg->imp_tag != -1) { |
| exp_tmp->exp_tag = arg->imp_tag; |
| exp_tmp->exp_class = arg->imp_class; |
| arg->imp_tag = -1; |
| arg->imp_class = -1; |
| } else { |
| exp_tmp->exp_tag = exp_tag; |
| exp_tmp->exp_class = exp_class; |
| } |
| exp_tmp->exp_constructed = exp_constructed; |
| exp_tmp->exp_pad = exp_pad; |
| |
| return 1; |
| } |
| |
| static int asn1_str2tag(const char *tagstr, int len) |
| { |
| unsigned int i; |
| static const struct tag_name_st *tntmp, tnst[] = { |
| ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN), |
| ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN), |
| ASN1_GEN_STR("NULL", V_ASN1_NULL), |
| ASN1_GEN_STR("INT", V_ASN1_INTEGER), |
| ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER), |
| ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED), |
| ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED), |
| ASN1_GEN_STR("OID", V_ASN1_OBJECT), |
| ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT), |
| ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME), |
| ASN1_GEN_STR("UTC", V_ASN1_UTCTIME), |
| ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME), |
| ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME), |
| ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING), |
| ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING), |
| ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING), |
| ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING), |
| ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING), |
| ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING), |
| ASN1_GEN_STR("IA5", V_ASN1_IA5STRING), |
| ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING), |
| ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING), |
| ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING), |
| ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING), |
| ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING), |
| ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING), |
| ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING), |
| ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING), |
| ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING), |
| ASN1_GEN_STR("T61", V_ASN1_T61STRING), |
| ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING), |
| ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING), |
| ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING), |
| ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING), |
| ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING), |
| ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING), |
| |
| /* Special cases */ |
| ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE), |
| ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE), |
| ASN1_GEN_STR("SET", V_ASN1_SET), |
| /* type modifiers */ |
| /* Explicit tag */ |
| ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP), |
| ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP), |
| /* Implicit tag */ |
| ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP), |
| ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP), |
| /* OCTET STRING wrapper */ |
| ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP), |
| /* SEQUENCE wrapper */ |
| ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP), |
| /* SET wrapper */ |
| ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP), |
| /* BIT STRING wrapper */ |
| ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP), |
| ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT), |
| ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT), |
| }; |
| |
| if (len == -1) |
| len = strlen(tagstr); |
| |
| tntmp = tnst; |
| for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++) { |
| if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len)) |
| return tntmp->tag; |
| } |
| |
| return -1; |
| } |
| |
| static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype) |
| { |
| ASN1_TYPE *atmp = NULL; |
| |
| CONF_VALUE vtmp; |
| |
| unsigned char *rdata; |
| long rdlen; |
| |
| int no_unused = 1; |
| |
| if (!(atmp = ASN1_TYPE_new())) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| |
| if (!str) |
| str = ""; |
| |
| switch (utype) { |
| |
| case V_ASN1_NULL: |
| if (str && *str) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NULL_VALUE); |
| goto bad_form; |
| } |
| break; |
| |
| case V_ASN1_BOOLEAN: |
| if (format != ASN1_GEN_FORMAT_ASCII) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ASCII_FORMAT); |
| goto bad_form; |
| } |
| vtmp.name = NULL; |
| vtmp.section = NULL; |
| vtmp.value = (char *)str; |
| if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_BOOLEAN); |
| goto bad_str; |
| } |
| break; |
| |
| case V_ASN1_INTEGER: |
| case V_ASN1_ENUMERATED: |
| if (format != ASN1_GEN_FORMAT_ASCII) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_INTEGER_NOT_ASCII_FORMAT); |
| goto bad_form; |
| } |
| if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str))) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_INTEGER); |
| goto bad_str; |
| } |
| break; |
| |
| case V_ASN1_OBJECT: |
| if (format != ASN1_GEN_FORMAT_ASCII) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_OBJECT_NOT_ASCII_FORMAT); |
| goto bad_form; |
| } |
| if (!(atmp->value.object = OBJ_txt2obj(str, 0))) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OBJECT); |
| goto bad_str; |
| } |
| break; |
| |
| case V_ASN1_UTCTIME: |
| case V_ASN1_GENERALIZEDTIME: |
| if (format != ASN1_GEN_FORMAT_ASCII) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_TIME_NOT_ASCII_FORMAT); |
| goto bad_form; |
| } |
| if (!(atmp->value.asn1_string = ASN1_STRING_new())) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| goto bad_str; |
| } |
| if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| goto bad_str; |
| } |
| atmp->value.asn1_string->type = utype; |
| if (!ASN1_TIME_check(atmp->value.asn1_string)) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_TIME_VALUE); |
| goto bad_str; |
| } |
| |
| break; |
| |
| case V_ASN1_BMPSTRING: |
| case V_ASN1_PRINTABLESTRING: |
| case V_ASN1_IA5STRING: |
| case V_ASN1_T61STRING: |
| case V_ASN1_UTF8STRING: |
| case V_ASN1_VISIBLESTRING: |
| case V_ASN1_UNIVERSALSTRING: |
| case V_ASN1_GENERALSTRING: |
| case V_ASN1_NUMERICSTRING: |
| |
| if (format == ASN1_GEN_FORMAT_ASCII) |
| format = MBSTRING_ASC; |
| else if (format == ASN1_GEN_FORMAT_UTF8) |
| format = MBSTRING_UTF8; |
| else { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_FORMAT); |
| goto bad_form; |
| } |
| |
| if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str, |
| -1, format, ASN1_tag2bit(utype)) <= 0) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| goto bad_str; |
| } |
| |
| break; |
| |
| case V_ASN1_BIT_STRING: |
| |
| case V_ASN1_OCTET_STRING: |
| |
| if (!(atmp->value.asn1_string = ASN1_STRING_new())) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| goto bad_form; |
| } |
| |
| if (format == ASN1_GEN_FORMAT_HEX) { |
| |
| if (!(rdata = string_to_hex((char *)str, &rdlen))) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_HEX); |
| goto bad_str; |
| } |
| |
| atmp->value.asn1_string->data = rdata; |
| atmp->value.asn1_string->length = rdlen; |
| atmp->value.asn1_string->type = utype; |
| |
| } else if (format == ASN1_GEN_FORMAT_ASCII) |
| ASN1_STRING_set(atmp->value.asn1_string, str, -1); |
| else if ((format == ASN1_GEN_FORMAT_BITLIST) |
| && (utype == V_ASN1_BIT_STRING)) { |
| if (!CONF_parse_list |
| (str, ',', 1, bitstr_cb, atmp->value.bit_string)) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_LIST_ERROR); |
| goto bad_str; |
| } |
| no_unused = 0; |
| |
| } else { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_BITSTRING_FORMAT); |
| goto bad_form; |
| } |
| |
| if ((utype == V_ASN1_BIT_STRING) && no_unused) { |
| atmp->value.asn1_string->flags |
| &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); |
| atmp->value.asn1_string->flags |= ASN1_STRING_FLAG_BITS_LEFT; |
| } |
| |
| break; |
| |
| default: |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNSUPPORTED_TYPE); |
| goto bad_str; |
| break; |
| } |
| |
| atmp->type = utype; |
| return atmp; |
| |
| bad_str: |
| ERR_add_error_data(2, "string=", str); |
| bad_form: |
| |
| ASN1_TYPE_free(atmp); |
| return NULL; |
| |
| } |
| |
| static int bitstr_cb(const char *elem, int len, void *bitstr) |
| { |
| long bitnum; |
| char *eptr; |
| if (!elem) |
| return 0; |
| bitnum = strtoul(elem, &eptr, 10); |
| if (eptr && *eptr && (eptr != elem + len)) |
| return 0; |
| if (bitnum < 0) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_NUMBER); |
| return 0; |
| } |
| if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| return 1; |
| } |
