/* asn1_gen.c */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project 2002. */ /* ==================================================================== * Copyright (c) 2002 The OpenSSL Project. All rights reserved. * * 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 above 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 acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED 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 OpenSSL PROJECT OR * ITS 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. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #include "cryptlib.h" #include #include #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; 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) { ASN1err(ASN1_F_ASN1_GENERATE_V3, 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; 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) { ASN1err(ASN1_F_ASN1_CB, 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]) { ASN1err(ASN1_F_ASN1_CB, 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) { ASN1err(ASN1_F_ASN1_CB, 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 (!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", 3)) arg->format = ASN1_GEN_FORMAT_BITLIST; else { ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKOWN_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) { ASN1err(ASN1_F_PARSE_TAGGING, 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; ASN1err(ASN1_F_PARSE_TAGGING, 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; int 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) { ASN1err(ASN1_F_APPEND_EXP, ASN1_R_ILLEGAL_IMPLICIT_TAG); return 0; } if (arg->exp_count == ASN1_FLAG_EXP_MAX) { ASN1err(ASN1_F_APPEND_EXP, 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())) { ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); return NULL; } if (!str) str = ""; switch(utype) { case V_ASN1_NULL: if (str && *str) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_NULL_VALUE); goto bad_form; } break; case V_ASN1_BOOLEAN: if (format != ASN1_GEN_FORMAT_ASCII) { ASN1err(ASN1_F_ASN1_STR2TYPE, 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)) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN); goto bad_str; } break; case V_ASN1_INTEGER: case V_ASN1_ENUMERATED: if (format != ASN1_GEN_FORMAT_ASCII) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_INTEGER_NOT_ASCII_FORMAT); goto bad_form; } if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str))) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER); goto bad_str; } break; case V_ASN1_OBJECT: if (format != ASN1_GEN_FORMAT_ASCII) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_OBJECT_NOT_ASCII_FORMAT); goto bad_form; } if (!(atmp->value.object = OBJ_txt2obj(str, 0))) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT); goto bad_str; } break; case V_ASN1_UTCTIME: case V_ASN1_GENERALIZEDTIME: if (format != ASN1_GEN_FORMAT_ASCII) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_TIME_NOT_ASCII_FORMAT); goto bad_form; } if (!(atmp->value.asn1_string = ASN1_STRING_new())) { ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); goto bad_str; } if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) { ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); goto bad_str; } atmp->value.asn1_string->type = utype; if (!ASN1_TIME_check(atmp->value.asn1_string)) { ASN1err(ASN1_F_ASN1_STR2TYPE, 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 { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT); goto bad_form; } if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str, -1, format, ASN1_tag2bit(utype)) <= 0) { ASN1err(ASN1_F_ASN1_STR2TYPE, 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())) { ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); goto bad_form; } if (format == ASN1_GEN_FORMAT_HEX) { if (!(rdata = string_to_hex((char *)str, &rdlen))) { ASN1err(ASN1_F_ASN1_STR2TYPE, 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)) { ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_LIST_ERROR); goto bad_str; } no_unused = 0; } else { ASN1err(ASN1_F_ASN1_STR2TYPE, 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: ASN1err(ASN1_F_ASN1_STR2TYPE, 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) { ASN1err(ASN1_F_BITSTR_CB, ASN1_R_INVALID_NUMBER); return 0; } if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) { ASN1err(ASN1_F_BITSTR_CB, ERR_R_MALLOC_FAILURE); return 0; } return 1; }