diff options
Diffstat (limited to 'crypto/x509v3/v3_utl.c')
| -rw-r--r-- | crypto/x509v3/v3_utl.c | 844 |
1 files changed, 844 insertions, 0 deletions
diff --git a/crypto/x509v3/v3_utl.c b/crypto/x509v3/v3_utl.c new file mode 100644 index 0000000..3dba055 --- /dev/null +++ b/crypto/x509v3/v3_utl.c @@ -0,0 +1,844 @@ +/* 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 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("%s\n", 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("%s\n", 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=%s\n", 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("%s\n", 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; + const 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; + } + + +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; + } |
