| /* v3_utl.c */ |
| /* |
| * Written by Dr Stephen N Henson (steve@openssl.org) 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 <openssl/opensslconf.h> |
| #if !defined(OPENSSL_SYS_STARBOARD) |
| #include <ctype.h> |
| #include <stdio.h> |
| #endif // !defined(OPENSSL_SYS_STARBOARD) |
| #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_OF(OPENSSL_STRING) *get_email(X509_NAME *name, |
| GENERAL_NAMES *gens); |
| static void str_free(OPENSSL_STRING str); |
| static int append_ia5(STACK_OF(OPENSSL_STRING) **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 (!OPENSSL_port_strcmp(btmp, "TRUE") || !OPENSSL_port_strcmp(btmp, "true") |
| || !OPENSSL_port_strcmp(btmp, "Y") || !OPENSSL_port_strcmp(btmp, "y") |
| || !OPENSSL_port_strcmp(btmp, "YES") || !OPENSSL_port_strcmp(btmp, "yes")) { |
| *asn1_bool = 0xff; |
| return 1; |
| } else if (!OPENSSL_port_strcmp(btmp, "FALSE") || !OPENSSL_port_strcmp(btmp, "false") |
| || !OPENSSL_port_strcmp(btmp, "N") || !OPENSSL_port_strcmp(btmp, "n") |
| || !OPENSSL_port_strcmp(btmp, "NO") || !OPENSSL_port_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); |
| if (linebuf == NULL) { |
| X509V3err(X509V3_F_X509V3_PARSE_LIST, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| 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 |
| OPENSSL_port_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 |
| OPENSSL_port_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 |
| OPENSSL_port_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 |
| OPENSSL_port_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 && OPENSSL_port_isspace((unsigned char)*p)) |
| p++; |
| if (!*p) |
| return NULL; |
| q = p + OPENSSL_port_strlen(p) - 1; |
| while ((q != p) && OPENSSL_port_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(const unsigned char *buffer, long len) |
| { |
| char *tmp, *q; |
| const 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(const 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(OPENSSL_port_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 (OPENSSL_port_isupper(ch)) |
| ch = OPENSSL_port_tolower(ch); |
| if (OPENSSL_port_isupper(cl)) |
| cl = OPENSSL_port_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 = OPENSSL_port_strlen(cmp); |
| if ((ret = OPENSSL_port_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 OPENSSL_port_strcmp(*a, *b); |
| } |
| |
| STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x) |
| { |
| GENERAL_NAMES *gens; |
| STACK_OF(OPENSSL_STRING) *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_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x) |
| { |
| AUTHORITY_INFO_ACCESS *info; |
| STACK_OF(OPENSSL_STRING) *ret = NULL; |
| int i; |
| |
| info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL); |
| if (!info) |
| return NULL; |
| for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++) { |
| ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i); |
| if (OBJ_obj2nid(ad->method) == NID_ad_OCSP) { |
| if (ad->location->type == GEN_URI) { |
| if (!append_ia5 |
| (&ret, ad->location->d.uniformResourceIdentifier)) |
| break; |
| } |
| } |
| } |
| AUTHORITY_INFO_ACCESS_free(info); |
| return ret; |
| } |
| |
| STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x) |
| { |
| GENERAL_NAMES *gens; |
| STACK_OF(X509_EXTENSION) *exts; |
| STACK_OF(OPENSSL_STRING) *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_OF(OPENSSL_STRING) *get_email(X509_NAME *name, |
| GENERAL_NAMES *gens) |
| { |
| STACK_OF(OPENSSL_STRING) *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(OPENSSL_STRING str) |
| { |
| OPENSSL_free(str); |
| } |
| |
| static int append_ia5(STACK_OF(OPENSSL_STRING) **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_OPENSSL_STRING_new(sk_strcmp); |
| if (!*sk) |
| return 0; |
| /* Don't add duplicates */ |
| if (sk_OPENSSL_STRING_find(*sk, (char *)email->data) != -1) |
| return 1; |
| emtmp = BUF_strdup((char *)email->data); |
| if (!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) { |
| X509_email_free(*sk); |
| *sk = NULL; |
| return 0; |
| } |
| return 1; |
| } |
| |
| void X509_email_free(STACK_OF(OPENSSL_STRING) *sk) |
| { |
| sk_OPENSSL_STRING_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 = OPENSSL_port_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 (OPENSSL_port_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 (OPENSSL_port_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 */ |
| |
| if (v6stat.zero_pos >= 0) { |
| /* Copy initial part */ |
| OPENSSL_port_memcpy(v6, v6stat.tmp, v6stat.zero_pos); |
| /* Zero middle */ |
| OPENSSL_port_memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total); |
| /* Copy final part */ |
| if (v6stat.total != v6stat.zero_pos) |
| OPENSSL_port_memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total, |
| v6stat.tmp + v6stat.zero_pos, |
| v6stat.total - v6stat.zero_pos); |
| } else |
| OPENSSL_port_memcpy(v6, v6stat.tmp, 16); |
| |
| 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; |
| } |
