v3_utl.c
上传用户:yisoukefu
上传日期:2020-08-09
资源大小:39506k
文件大小:20k
- /* v3_utl.c */
- /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project.
- */
- /* ====================================================================
- * Copyright (c) 1999-2003 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).
- *
- */
- /* X509 v3 extension utilities */
- #include <stdio.h>
- #include <ctype.h>
- #include "cryptlib.h"
- #include <openssl/conf.h>
- #include <openssl/x509v3.h>
- #include <openssl/bn.h>
- static char *strip_spaces(char *name);
- static int sk_strcmp(const char * const *a, const char * const *b);
- static STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens);
- static void str_free(void *str);
- static int append_ia5(STACK **sk, ASN1_IA5STRING *email);
- static int a2i_ipadd(unsigned char *ipout, const char *ipasc);
- static int ipv4_from_asc(unsigned char *v4, const char *in);
- static int ipv6_from_asc(unsigned char *v6, const char *in);
- static int ipv6_cb(const char *elem, int len, void *usr);
- static int ipv6_hex(unsigned char *out, const char *in, int inlen);
- /* Add a CONF_VALUE name value pair to stack */
- int X509V3_add_value(const char *name, const char *value,
- STACK_OF(CONF_VALUE) **extlist)
- {
- CONF_VALUE *vtmp = NULL;
- char *tname = NULL, *tvalue = NULL;
- if(name && !(tname = BUF_strdup(name))) goto err;
- if(value && !(tvalue = BUF_strdup(value))) goto err;;
- if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err;
- if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err;
- vtmp->section = NULL;
- vtmp->name = tname;
- vtmp->value = tvalue;
- if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err;
- return 1;
- err:
- X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
- if(vtmp) OPENSSL_free(vtmp);
- if(tname) OPENSSL_free(tname);
- if(tvalue) OPENSSL_free(tvalue);
- return 0;
- }
- int X509V3_add_value_uchar(const char *name, const unsigned char *value,
- STACK_OF(CONF_VALUE) **extlist)
- {
- return X509V3_add_value(name,(const char *)value,extlist);
- }
- /* Free function for STACK_OF(CONF_VALUE) */
- void X509V3_conf_free(CONF_VALUE *conf)
- {
- if(!conf) return;
- if(conf->name) OPENSSL_free(conf->name);
- if(conf->value) OPENSSL_free(conf->value);
- if(conf->section) OPENSSL_free(conf->section);
- OPENSSL_free(conf);
- }
- int X509V3_add_value_bool(const char *name, int asn1_bool,
- STACK_OF(CONF_VALUE) **extlist)
- {
- if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
- return X509V3_add_value(name, "FALSE", extlist);
- }
- int X509V3_add_value_bool_nf(char *name, int asn1_bool,
- STACK_OF(CONF_VALUE) **extlist)
- {
- if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
- return 1;
- }
- char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
- {
- BIGNUM *bntmp = NULL;
- char *strtmp = NULL;
- if(!a) return NULL;
- if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
- !(strtmp = BN_bn2dec(bntmp)) )
- X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE);
- BN_free(bntmp);
- return strtmp;
- }
- char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a)
- {
- BIGNUM *bntmp = NULL;
- char *strtmp = NULL;
- if(!a) return NULL;
- if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
- !(strtmp = BN_bn2dec(bntmp)) )
- X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE);
- BN_free(bntmp);
- return strtmp;
- }
- ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
- {
- BIGNUM *bn = NULL;
- ASN1_INTEGER *aint;
- int isneg, ishex;
- int ret;
- if (!value) {
- X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
- return 0;
- }
- bn = BN_new();
- if (value[0] == '-') {
- value++;
- isneg = 1;
- } else isneg = 0;
- if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {
- value += 2;
- ishex = 1;
- } else ishex = 0;
- if (ishex) ret = BN_hex2bn(&bn, value);
- else ret = BN_dec2bn(&bn, value);
- if (!ret || value[ret]) {
- BN_free(bn);
- X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
- return 0;
- }
- if (isneg && BN_is_zero(bn)) isneg = 0;
- aint = BN_to_ASN1_INTEGER(bn, NULL);
- BN_free(bn);
- if (!aint) {
- X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
- return 0;
- }
- if (isneg) aint->type |= V_ASN1_NEG;
- return aint;
- }
- int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
- STACK_OF(CONF_VALUE) **extlist)
- {
- char *strtmp;
- int ret;
- if(!aint) return 1;
- if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
- ret = X509V3_add_value(name, strtmp, extlist);
- OPENSSL_free(strtmp);
- return ret;
- }
- int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
- {
- char *btmp;
- if(!(btmp = value->value)) goto err;
- if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true")
- || !strcmp(btmp, "Y") || !strcmp(btmp, "y")
- || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) {
- *asn1_bool = 0xff;
- return 1;
- } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
- || !strcmp(btmp, "N") || !strcmp(btmp, "n")
- || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
- *asn1_bool = 0;
- return 1;
- }
- err:
- X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING);
- X509V3_conf_err(value);
- return 0;
- }
- int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
- {
- ASN1_INTEGER *itmp;
- if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
- X509V3_conf_err(value);
- return 0;
- }
- *aint = itmp;
- return 1;
- }
- #define HDR_NAME 1
- #define HDR_VALUE 2
- /*#define DEBUG*/
- STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
- {
- char *p, *q, c;
- char *ntmp, *vtmp;
- STACK_OF(CONF_VALUE) *values = NULL;
- char *linebuf;
- int state;
- /* We are going to modify the line so copy it first */
- linebuf = BUF_strdup(line);
- state = HDR_NAME;
- ntmp = NULL;
- /* Go through all characters */
- for(p = linebuf, q = linebuf; (c = *p) && (c!='r') && (c!='n'); p++) {
- switch(state) {
- case HDR_NAME:
- if(c == ':') {
- state = HDR_VALUE;
- *p = 0;
- ntmp = strip_spaces(q);
- if(!ntmp) {
- X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
- goto err;
- }
- q = p + 1;
- } else if(c == ',') {
- *p = 0;
- ntmp = strip_spaces(q);
- q = p + 1;
- #if 0
- printf("%sn", ntmp);
- #endif
- if(!ntmp) {
- X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
- goto err;
- }
- X509V3_add_value(ntmp, NULL, &values);
- }
- break ;
- case HDR_VALUE:
- if(c == ',') {
- state = HDR_NAME;
- *p = 0;
- vtmp = strip_spaces(q);
- #if 0
- printf("%sn", ntmp);
- #endif
- if(!vtmp) {
- X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
- goto err;
- }
- X509V3_add_value(ntmp, vtmp, &values);
- ntmp = NULL;
- q = p + 1;
- }
- }
- }
- if(state == HDR_VALUE) {
- vtmp = strip_spaces(q);
- #if 0
- printf("%s=%sn", ntmp, vtmp);
- #endif
- if(!vtmp) {
- X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
- goto err;
- }
- X509V3_add_value(ntmp, vtmp, &values);
- } else {
- ntmp = strip_spaces(q);
- #if 0
- printf("%sn", ntmp);
- #endif
- if(!ntmp) {
- X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
- goto err;
- }
- X509V3_add_value(ntmp, NULL, &values);
- }
- OPENSSL_free(linebuf);
- return values;
- err:
- OPENSSL_free(linebuf);
- sk_CONF_VALUE_pop_free(values, X509V3_conf_free);
- return NULL;
- }
- /* Delete leading and trailing spaces from a string */
- static char *strip_spaces(char *name)
- {
- char *p, *q;
- /* Skip over leading spaces */
- p = name;
- while(*p && isspace((unsigned char)*p)) p++;
- if(!*p) return NULL;
- q = p + strlen(p) - 1;
- while((q != p) && isspace((unsigned char)*q)) q--;
- if(p != q) q[1] = 0;
- if(!*p) return NULL;
- return p;
- }
- /* hex string utilities */
- /* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
- * hex representation
- * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines)
- */
- char *hex_to_string(unsigned char *buffer, long len)
- {
- char *tmp, *q;
- unsigned char *p;
- int i;
- static char hexdig[] = "0123456789ABCDEF";
- if(!buffer || !len) return NULL;
- if(!(tmp = OPENSSL_malloc(len * 3 + 1))) {
- X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- q = tmp;
- for(i = 0, p = buffer; i < len; i++,p++) {
- *q++ = hexdig[(*p >> 4) & 0xf];
- *q++ = hexdig[*p & 0xf];
- *q++ = ':';
- }
- q[-1] = 0;
- #ifdef CHARSET_EBCDIC
- ebcdic2ascii(tmp, tmp, q - tmp - 1);
- #endif
- return tmp;
- }
- /* Give a string of hex digits convert to
- * a buffer
- */
- unsigned char *string_to_hex(char *str, long *len)
- {
- unsigned char *hexbuf, *q;
- unsigned char ch, cl, *p;
- if(!str) {
- X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
- return NULL;
- }
- if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err;
- for(p = (unsigned char *)str, q = hexbuf; *p;) {
- ch = *p++;
- #ifdef CHARSET_EBCDIC
- ch = os_toebcdic[ch];
- #endif
- if(ch == ':') continue;
- cl = *p++;
- #ifdef CHARSET_EBCDIC
- cl = os_toebcdic[cl];
- #endif
- if(!cl) {
- X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS);
- OPENSSL_free(hexbuf);
- return NULL;
- }
- if(isupper(ch)) ch = tolower(ch);
- if(isupper(cl)) cl = tolower(cl);
- if((ch >= '0') && (ch <= '9')) ch -= '0';
- else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10;
- else goto badhex;
- if((cl >= '0') && (cl <= '9')) cl -= '0';
- else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10;
- else goto badhex;
- *q++ = (ch << 4) | cl;
- }
- if(len) *len = q - hexbuf;
- return hexbuf;
- err:
- if(hexbuf) OPENSSL_free(hexbuf);
- X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
- return NULL;
- badhex:
- OPENSSL_free(hexbuf);
- X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
- return NULL;
- }
- /* V2I name comparison function: returns zero if 'name' matches
- * cmp or cmp.*
- */
- int name_cmp(const char *name, const char *cmp)
- {
- int len, ret;
- char c;
- len = strlen(cmp);
- if((ret = strncmp(name, cmp, len))) return ret;
- c = name[len];
- if(!c || (c=='.')) return 0;
- return 1;
- }
- static int sk_strcmp(const char * const *a, const char * const *b)
- {
- return strcmp(*a, *b);
- }
- STACK *X509_get1_email(X509 *x)
- {
- GENERAL_NAMES *gens;
- STACK *ret;
- gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
- ret = get_email(X509_get_subject_name(x), gens);
- sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
- return ret;
- }
- STACK *X509_REQ_get1_email(X509_REQ *x)
- {
- GENERAL_NAMES *gens;
- STACK_OF(X509_EXTENSION) *exts;
- STACK *ret;
- exts = X509_REQ_get_extensions(x);
- gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL);
- ret = get_email(X509_REQ_get_subject_name(x), gens);
- sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
- sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
- return ret;
- }
- static STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens)
- {
- STACK *ret = NULL;
- X509_NAME_ENTRY *ne;
- ASN1_IA5STRING *email;
- GENERAL_NAME *gen;
- int i;
- /* Now add any email address(es) to STACK */
- i = -1;
- /* First supplied X509_NAME */
- while((i = X509_NAME_get_index_by_NID(name,
- NID_pkcs9_emailAddress, i)) >= 0) {
- ne = X509_NAME_get_entry(name, i);
- email = X509_NAME_ENTRY_get_data(ne);
- if(!append_ia5(&ret, email)) return NULL;
- }
- for(i = 0; i < sk_GENERAL_NAME_num(gens); i++)
- {
- gen = sk_GENERAL_NAME_value(gens, i);
- if(gen->type != GEN_EMAIL) continue;
- if(!append_ia5(&ret, gen->d.ia5)) return NULL;
- }
- return ret;
- }
- static void str_free(void *str)
- {
- OPENSSL_free(str);
- }
- static int append_ia5(STACK **sk, ASN1_IA5STRING *email)
- {
- char *emtmp;
- /* First some sanity checks */
- if(email->type != V_ASN1_IA5STRING) return 1;
- if(!email->data || !email->length) return 1;
- if(!*sk) *sk = sk_new(sk_strcmp);
- if(!*sk) return 0;
- /* Don't add duplicates */
- if(sk_find(*sk, (char *)email->data) != -1) return 1;
- emtmp = BUF_strdup((char *)email->data);
- if(!emtmp || !sk_push(*sk, emtmp)) {
- X509_email_free(*sk);
- *sk = NULL;
- return 0;
- }
- return 1;
- }
- void X509_email_free(STACK *sk)
- {
- sk_pop_free(sk, str_free);
- }
- /* Convert IP addresses both IPv4 and IPv6 into an
- * OCTET STRING compatible with RFC3280.
- */
- ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc)
- {
- unsigned char ipout[16];
- ASN1_OCTET_STRING *ret;
- int iplen;
- /* If string contains a ':' assume IPv6 */
- iplen = a2i_ipadd(ipout, ipasc);
- if (!iplen)
- return NULL;
- ret = ASN1_OCTET_STRING_new();
- if (!ret)
- return NULL;
- if (!ASN1_OCTET_STRING_set(ret, ipout, iplen))
- {
- ASN1_OCTET_STRING_free(ret);
- return NULL;
- }
- return ret;
- }
- ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc)
- {
- ASN1_OCTET_STRING *ret = NULL;
- unsigned char ipout[32];
- char *iptmp = NULL, *p;
- int iplen1, iplen2;
- p = strchr(ipasc,'/');
- if (!p)
- return NULL;
- iptmp = BUF_strdup(ipasc);
- if (!iptmp)
- return NULL;
- p = iptmp + (p - ipasc);
- *p++ = 0;
- iplen1 = a2i_ipadd(ipout, iptmp);
- if (!iplen1)
- goto err;
- iplen2 = a2i_ipadd(ipout + iplen1, p);
- OPENSSL_free(iptmp);
- iptmp = NULL;
- if (!iplen2 || (iplen1 != iplen2))
- goto err;
- ret = ASN1_OCTET_STRING_new();
- if (!ret)
- goto err;
- if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2))
- goto err;
- return ret;
- err:
- if (iptmp)
- OPENSSL_free(iptmp);
- if (ret)
- ASN1_OCTET_STRING_free(ret);
- return NULL;
- }
-
- static int a2i_ipadd(unsigned char *ipout, const char *ipasc)
- {
- /* If string contains a ':' assume IPv6 */
- if (strchr(ipasc, ':'))
- {
- if (!ipv6_from_asc(ipout, ipasc))
- return 0;
- return 16;
- }
- else
- {
- if (!ipv4_from_asc(ipout, ipasc))
- return 0;
- return 4;
- }
- }
- static int ipv4_from_asc(unsigned char *v4, const char *in)
- {
- int a0, a1, a2, a3;
- if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4)
- return 0;
- if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255)
- || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255))
- return 0;
- v4[0] = a0;
- v4[1] = a1;
- v4[2] = a2;
- v4[3] = a3;
- return 1;
- }
- typedef struct {
- /* Temporary store for IPV6 output */
- unsigned char tmp[16];
- /* Total number of bytes in tmp */
- int total;
- /* The position of a zero (corresponding to '::') */
- int zero_pos;
- /* Number of zeroes */
- int zero_cnt;
- } IPV6_STAT;
- static int ipv6_from_asc(unsigned char *v6, const char *in)
- {
- IPV6_STAT v6stat;
- v6stat.total = 0;
- v6stat.zero_pos = -1;
- v6stat.zero_cnt = 0;
- /* Treat the IPv6 representation as a list of values
- * separated by ':'. The presence of a '::' will parse
- * as one, two or three zero length elements.
- */
- if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat))
- return 0;
- /* Now for some sanity checks */
- if (v6stat.zero_pos == -1)
- {
- /* If no '::' must have exactly 16 bytes */
- if (v6stat.total != 16)
- return 0;
- }
- else
- {
- /* If '::' must have less than 16 bytes */
- if (v6stat.total == 16)
- return 0;
- /* More than three zeroes is an error */
- if (v6stat.zero_cnt > 3)
- return 0;
- /* Can only have three zeroes if nothing else present */
- else if (v6stat.zero_cnt == 3)
- {
- if (v6stat.total > 0)
- return 0;
- }
- /* Can only have two zeroes if at start or end */
- else if (v6stat.zero_cnt == 2)
- {
- if ((v6stat.zero_pos != 0)
- && (v6stat.zero_pos != v6stat.total))
- return 0;
- }
- else
- /* Can only have one zero if *not* start or end */
- {
- if ((v6stat.zero_pos == 0)
- || (v6stat.zero_pos == v6stat.total))
- return 0;
- }
- }
- /* Format result */
- /* Copy initial part */
- if (v6stat.zero_pos > 0)
- memcpy(v6, v6stat.tmp, v6stat.zero_pos);
- /* Zero middle */
- if (v6stat.total != 16)
- memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total);
- /* Copy final part */
- if (v6stat.total != v6stat.zero_pos)
- memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total,
- v6stat.tmp + v6stat.zero_pos,
- v6stat.total - v6stat.zero_pos);
- return 1;
- }
- static int ipv6_cb(const char *elem, int len, void *usr)
- {
- IPV6_STAT *s = usr;
- /* Error if 16 bytes written */
- if (s->total == 16)
- return 0;
- if (len == 0)
- {
- /* Zero length element, corresponds to '::' */
- if (s->zero_pos == -1)
- s->zero_pos = s->total;
- /* If we've already got a :: its an error */
- else if (s->zero_pos != s->total)
- return 0;
- s->zero_cnt++;
- }
- else
- {
- /* If more than 4 characters could be final a.b.c.d form */
- if (len > 4)
- {
- /* Need at least 4 bytes left */
- if (s->total > 12)
- return 0;
- /* Must be end of string */
- if (elem[len])
- return 0;
- if (!ipv4_from_asc(s->tmp + s->total, elem))
- return 0;
- s->total += 4;
- }
- else
- {
- if (!ipv6_hex(s->tmp + s->total, elem, len))
- return 0;
- s->total += 2;
- }
- }
- return 1;
- }
- /* Convert a string of up to 4 hex digits into the corresponding
- * IPv6 form.
- */
- static int ipv6_hex(unsigned char *out, const char *in, int inlen)
- {
- unsigned char c;
- unsigned int num = 0;
- if (inlen > 4)
- return 0;
- while(inlen--)
- {
- c = *in++;
- num <<= 4;
- if ((c >= '0') && (c <= '9'))
- num |= c - '0';
- else if ((c >= 'A') && (c <= 'F'))
- num |= c - 'A' + 10;
- else if ((c >= 'a') && (c <= 'f'))
- num |= c - 'a' + 10;
- else
- return 0;
- }
- out[0] = num >> 8;
- out[1] = num & 0xff;
- return 1;
- }
- int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk,
- unsigned long chtype)
- {
- CONF_VALUE *v;
- int i, mval;
- char *p, *type;
- if (!nm)
- return 0;
- for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++)
- {
- v=sk_CONF_VALUE_value(dn_sk,i);
- type=v->name;
- /* Skip past any leading X. X: X, etc to allow for
- * multiple instances
- */
- for(p = type; *p ; p++)
- #ifndef CHARSET_EBCDIC
- if ((*p == ':') || (*p == ',') || (*p == '.'))
- #else
- if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.']))
- #endif
- {
- p++;
- if(*p) type = p;
- break;
- }
- #ifndef CHARSET_EBCDIC
- if (*type == '+')
- #else
- if (*type == os_toascii['+'])
- #endif
- {
- mval = -1;
- type++;
- }
- else
- mval = 0;
- if (!X509_NAME_add_entry_by_txt(nm,type, chtype,
- (unsigned char *) v->value,-1,-1,mval))
- return 0;
- }
- return 1;
- }