--- /dev/null
+/* 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 <openssl/asn1.h>
+#include <openssl/x509v3.h>
+
+#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;
+ }
+
projects / cassiopeia.git / blobdiff