v3_utl.c revision 167612
155714Skris/* v3_utl.c */ 255714Skris/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3160814Ssimon * project. 455714Skris */ 555714Skris/* ==================================================================== 6160814Ssimon * Copyright (c) 1999-2003 The OpenSSL Project. All rights reserved. 755714Skris * 855714Skris * Redistribution and use in source and binary forms, with or without 955714Skris * modification, are permitted provided that the following conditions 1055714Skris * are met: 1155714Skris * 1255714Skris * 1. Redistributions of source code must retain the above copyright 1355714Skris * notice, this list of conditions and the following disclaimer. 1455714Skris * 1555714Skris * 2. Redistributions in binary form must reproduce the above copyright 1655714Skris * notice, this list of conditions and the following disclaimer in 1755714Skris * the documentation and/or other materials provided with the 1855714Skris * distribution. 1955714Skris * 2055714Skris * 3. All advertising materials mentioning features or use of this 2155714Skris * software must display the following acknowledgment: 2255714Skris * "This product includes software developed by the OpenSSL Project 2355714Skris * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 2455714Skris * 2555714Skris * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 2655714Skris * endorse or promote products derived from this software without 2755714Skris * prior written permission. For written permission, please contact 2855714Skris * licensing@OpenSSL.org. 2955714Skris * 3055714Skris * 5. Products derived from this software may not be called "OpenSSL" 3155714Skris * nor may "OpenSSL" appear in their names without prior written 3255714Skris * permission of the OpenSSL Project. 3355714Skris * 3455714Skris * 6. Redistributions of any form whatsoever must retain the following 3555714Skris * acknowledgment: 3655714Skris * "This product includes software developed by the OpenSSL Project 3755714Skris * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 3855714Skris * 3955714Skris * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 4055714Skris * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4155714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 4255714Skris * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 4355714Skris * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4455714Skris * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 4555714Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 4655714Skris * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4755714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 4855714Skris * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 4955714Skris * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 5055714Skris * OF THE POSSIBILITY OF SUCH DAMAGE. 5155714Skris * ==================================================================== 5255714Skris * 5355714Skris * This product includes cryptographic software written by Eric Young 5455714Skris * (eay@cryptsoft.com). This product includes software written by Tim 5555714Skris * Hudson (tjh@cryptsoft.com). 5655714Skris * 5755714Skris */ 5855714Skris/* X509 v3 extension utilities */ 5955714Skris 6055714Skris 6155714Skris#include <stdio.h> 6255714Skris#include <ctype.h> 6355714Skris#include "cryptlib.h" 6455714Skris#include <openssl/conf.h> 6555714Skris#include <openssl/x509v3.h> 66160814Ssimon#include <openssl/bn.h> 6755714Skris 6855714Skrisstatic char *strip_spaces(char *name); 6968651Skrisstatic int sk_strcmp(const char * const *a, const char * const *b); 70109998Smarkmstatic STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens); 7168651Skrisstatic void str_free(void *str); 7268651Skrisstatic int append_ia5(STACK **sk, ASN1_IA5STRING *email); 7355714Skris 74160814Ssimonstatic int ipv4_from_asc(unsigned char *v4, const char *in); 75160814Ssimonstatic int ipv6_from_asc(unsigned char *v6, const char *in); 76160814Ssimonstatic int ipv6_cb(const char *elem, int len, void *usr); 77160814Ssimonstatic int ipv6_hex(unsigned char *out, const char *in, int inlen); 78160814Ssimon 7955714Skris/* Add a CONF_VALUE name value pair to stack */ 8055714Skris 8155714Skrisint X509V3_add_value(const char *name, const char *value, 8255714Skris STACK_OF(CONF_VALUE) **extlist) 8355714Skris{ 8455714Skris CONF_VALUE *vtmp = NULL; 8555714Skris char *tname = NULL, *tvalue = NULL; 8655714Skris if(name && !(tname = BUF_strdup(name))) goto err; 8755714Skris if(value && !(tvalue = BUF_strdup(value))) goto err;; 8868651Skris if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err; 8968651Skris if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err; 9055714Skris vtmp->section = NULL; 9155714Skris vtmp->name = tname; 9255714Skris vtmp->value = tvalue; 9355714Skris if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err; 9455714Skris return 1; 9555714Skris err: 9655714Skris X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE); 9768651Skris if(vtmp) OPENSSL_free(vtmp); 9868651Skris if(tname) OPENSSL_free(tname); 9968651Skris if(tvalue) OPENSSL_free(tvalue); 10055714Skris return 0; 10155714Skris} 10255714Skris 10355714Skrisint X509V3_add_value_uchar(const char *name, const unsigned char *value, 10455714Skris STACK_OF(CONF_VALUE) **extlist) 10555714Skris { 10655714Skris return X509V3_add_value(name,(const char *)value,extlist); 10755714Skris } 10855714Skris 10955714Skris/* Free function for STACK_OF(CONF_VALUE) */ 11055714Skris 11155714Skrisvoid X509V3_conf_free(CONF_VALUE *conf) 11255714Skris{ 11355714Skris if(!conf) return; 11468651Skris if(conf->name) OPENSSL_free(conf->name); 11568651Skris if(conf->value) OPENSSL_free(conf->value); 11668651Skris if(conf->section) OPENSSL_free(conf->section); 11768651Skris OPENSSL_free(conf); 11855714Skris} 11955714Skris 12055714Skrisint X509V3_add_value_bool(const char *name, int asn1_bool, 12155714Skris STACK_OF(CONF_VALUE) **extlist) 12255714Skris{ 12355714Skris if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); 12455714Skris return X509V3_add_value(name, "FALSE", extlist); 12555714Skris} 12655714Skris 12755714Skrisint X509V3_add_value_bool_nf(char *name, int asn1_bool, 12855714Skris STACK_OF(CONF_VALUE) **extlist) 12955714Skris{ 13055714Skris if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); 13155714Skris return 1; 13255714Skris} 13355714Skris 13455714Skris 13555714Skrischar *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a) 13655714Skris{ 13755714Skris BIGNUM *bntmp = NULL; 13855714Skris char *strtmp = NULL; 13955714Skris if(!a) return NULL; 14055714Skris if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) || 14155714Skris !(strtmp = BN_bn2dec(bntmp)) ) 14255714Skris X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE); 14355714Skris BN_free(bntmp); 14455714Skris return strtmp; 14555714Skris} 14655714Skris 14755714Skrischar *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a) 14855714Skris{ 14955714Skris BIGNUM *bntmp = NULL; 15055714Skris char *strtmp = NULL; 15155714Skris if(!a) return NULL; 15255714Skris if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) || 15355714Skris !(strtmp = BN_bn2dec(bntmp)) ) 15455714Skris X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); 15555714Skris BN_free(bntmp); 15655714Skris return strtmp; 15755714Skris} 15855714Skris 15955714SkrisASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value) 16055714Skris{ 16155714Skris BIGNUM *bn = NULL; 16255714Skris ASN1_INTEGER *aint; 163109998Smarkm int isneg, ishex; 164109998Smarkm int ret; 165109998Smarkm if (!value) { 16655714Skris X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE); 16755714Skris return 0; 16855714Skris } 169160814Ssimon bn = BN_new(); 170109998Smarkm if (value[0] == '-') { 171109998Smarkm value++; 172109998Smarkm isneg = 1; 173109998Smarkm } else isneg = 0; 174109998Smarkm 175109998Smarkm if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) { 176109998Smarkm value += 2; 177109998Smarkm ishex = 1; 178109998Smarkm } else ishex = 0; 179109998Smarkm 180109998Smarkm if (ishex) ret = BN_hex2bn(&bn, value); 181109998Smarkm else ret = BN_dec2bn(&bn, value); 182109998Smarkm 183160814Ssimon if (!ret || value[ret]) { 184160814Ssimon BN_free(bn); 18555714Skris X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR); 18655714Skris return 0; 18755714Skris } 18855714Skris 189109998Smarkm if (isneg && BN_is_zero(bn)) isneg = 0; 190109998Smarkm 191109998Smarkm aint = BN_to_ASN1_INTEGER(bn, NULL); 192109998Smarkm BN_free(bn); 193109998Smarkm if (!aint) { 19455714Skris X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR); 19555714Skris return 0; 19655714Skris } 197109998Smarkm if (isneg) aint->type |= V_ASN1_NEG; 19855714Skris return aint; 19955714Skris} 20055714Skris 20155714Skrisint X509V3_add_value_int(const char *name, ASN1_INTEGER *aint, 20255714Skris STACK_OF(CONF_VALUE) **extlist) 20355714Skris{ 20455714Skris char *strtmp; 20555714Skris int ret; 20655714Skris if(!aint) return 1; 20755714Skris if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0; 20855714Skris ret = X509V3_add_value(name, strtmp, extlist); 20968651Skris OPENSSL_free(strtmp); 21055714Skris return ret; 21155714Skris} 21255714Skris 21355714Skrisint X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool) 21455714Skris{ 21555714Skris char *btmp; 21655714Skris if(!(btmp = value->value)) goto err; 21755714Skris if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true") 21855714Skris || !strcmp(btmp, "Y") || !strcmp(btmp, "y") 21955714Skris || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) { 22055714Skris *asn1_bool = 0xff; 22155714Skris return 1; 22255714Skris } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false") 22355714Skris || !strcmp(btmp, "N") || !strcmp(btmp, "n") 22455714Skris || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) { 22555714Skris *asn1_bool = 0; 22655714Skris return 1; 22755714Skris } 22855714Skris err: 22955714Skris X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING); 23055714Skris X509V3_conf_err(value); 23155714Skris return 0; 23255714Skris} 23355714Skris 23455714Skrisint X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint) 23555714Skris{ 23655714Skris ASN1_INTEGER *itmp; 23755714Skris if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) { 23855714Skris X509V3_conf_err(value); 23955714Skris return 0; 24055714Skris } 24155714Skris *aint = itmp; 24255714Skris return 1; 24355714Skris} 24455714Skris 24555714Skris#define HDR_NAME 1 24655714Skris#define HDR_VALUE 2 24755714Skris 24855714Skris/*#define DEBUG*/ 24955714Skris 250109998SmarkmSTACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line) 25155714Skris{ 25255714Skris char *p, *q, c; 25355714Skris char *ntmp, *vtmp; 25455714Skris STACK_OF(CONF_VALUE) *values = NULL; 25555714Skris char *linebuf; 25655714Skris int state; 25755714Skris /* We are going to modify the line so copy it first */ 25855714Skris linebuf = BUF_strdup(line); 25955714Skris state = HDR_NAME; 26055714Skris ntmp = NULL; 26155714Skris /* Go through all characters */ 26255714Skris for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) { 26355714Skris 26455714Skris switch(state) { 26555714Skris case HDR_NAME: 26655714Skris if(c == ':') { 26755714Skris state = HDR_VALUE; 26855714Skris *p = 0; 26955714Skris ntmp = strip_spaces(q); 27055714Skris if(!ntmp) { 27155714Skris X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); 27255714Skris goto err; 27355714Skris } 27455714Skris q = p + 1; 27555714Skris } else if(c == ',') { 27655714Skris *p = 0; 27755714Skris ntmp = strip_spaces(q); 27855714Skris q = p + 1; 279100928Snectar#if 0 28055714Skris printf("%s\n", ntmp); 28155714Skris#endif 28255714Skris if(!ntmp) { 28355714Skris X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); 28455714Skris goto err; 28555714Skris } 28655714Skris X509V3_add_value(ntmp, NULL, &values); 28755714Skris } 28855714Skris break ; 28955714Skris 29055714Skris case HDR_VALUE: 29155714Skris if(c == ',') { 29255714Skris state = HDR_NAME; 29355714Skris *p = 0; 29455714Skris vtmp = strip_spaces(q); 295100928Snectar#if 0 29655714Skris printf("%s\n", ntmp); 29755714Skris#endif 29855714Skris if(!vtmp) { 29955714Skris X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE); 30055714Skris goto err; 30155714Skris } 30255714Skris X509V3_add_value(ntmp, vtmp, &values); 30355714Skris ntmp = NULL; 30455714Skris q = p + 1; 30555714Skris } 30655714Skris 30755714Skris } 30855714Skris } 30955714Skris 31055714Skris if(state == HDR_VALUE) { 31155714Skris vtmp = strip_spaces(q); 312100928Snectar#if 0 31355714Skris printf("%s=%s\n", ntmp, vtmp); 31455714Skris#endif 31555714Skris if(!vtmp) { 31655714Skris X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE); 31755714Skris goto err; 31855714Skris } 31955714Skris X509V3_add_value(ntmp, vtmp, &values); 32055714Skris } else { 32155714Skris ntmp = strip_spaces(q); 322100928Snectar#if 0 32355714Skris printf("%s\n", ntmp); 32455714Skris#endif 32555714Skris if(!ntmp) { 32655714Skris X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); 32755714Skris goto err; 32855714Skris } 32955714Skris X509V3_add_value(ntmp, NULL, &values); 33055714Skris } 33168651SkrisOPENSSL_free(linebuf); 33255714Skrisreturn values; 33355714Skris 33455714Skriserr: 33568651SkrisOPENSSL_free(linebuf); 33655714Skrissk_CONF_VALUE_pop_free(values, X509V3_conf_free); 33755714Skrisreturn NULL; 33855714Skris 33955714Skris} 34055714Skris 34155714Skris/* Delete leading and trailing spaces from a string */ 34255714Skrisstatic char *strip_spaces(char *name) 34355714Skris{ 34455714Skris char *p, *q; 34555714Skris /* Skip over leading spaces */ 34655714Skris p = name; 34755714Skris while(*p && isspace((unsigned char)*p)) p++; 34855714Skris if(!*p) return NULL; 34955714Skris q = p + strlen(p) - 1; 35055714Skris while((q != p) && isspace((unsigned char)*q)) q--; 35155714Skris if(p != q) q[1] = 0; 35255714Skris if(!*p) return NULL; 35355714Skris return p; 35455714Skris} 35555714Skris 35655714Skris/* hex string utilities */ 35755714Skris 35868651Skris/* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its 35955714Skris * hex representation 36068651Skris * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines) 36155714Skris */ 36255714Skris 36355714Skrischar *hex_to_string(unsigned char *buffer, long len) 36455714Skris{ 36555714Skris char *tmp, *q; 36655714Skris unsigned char *p; 36755714Skris int i; 368167612Ssimon const static char hexdig[] = "0123456789ABCDEF"; 36955714Skris if(!buffer || !len) return NULL; 37068651Skris if(!(tmp = OPENSSL_malloc(len * 3 + 1))) { 37155714Skris X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE); 37255714Skris return NULL; 37355714Skris } 37455714Skris q = tmp; 37555714Skris for(i = 0, p = buffer; i < len; i++,p++) { 37655714Skris *q++ = hexdig[(*p >> 4) & 0xf]; 37755714Skris *q++ = hexdig[*p & 0xf]; 37855714Skris *q++ = ':'; 37955714Skris } 38055714Skris q[-1] = 0; 38168651Skris#ifdef CHARSET_EBCDIC 38268651Skris ebcdic2ascii(tmp, tmp, q - tmp - 1); 38368651Skris#endif 38468651Skris 38555714Skris return tmp; 38655714Skris} 38755714Skris 38855714Skris/* Give a string of hex digits convert to 38955714Skris * a buffer 39055714Skris */ 39155714Skris 39255714Skrisunsigned char *string_to_hex(char *str, long *len) 39355714Skris{ 39455714Skris unsigned char *hexbuf, *q; 39555714Skris unsigned char ch, cl, *p; 39655714Skris if(!str) { 39755714Skris X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT); 39855714Skris return NULL; 39955714Skris } 40068651Skris if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err; 40155714Skris for(p = (unsigned char *)str, q = hexbuf; *p;) { 40255714Skris ch = *p++; 40368651Skris#ifdef CHARSET_EBCDIC 40468651Skris ch = os_toebcdic[ch]; 40568651Skris#endif 40655714Skris if(ch == ':') continue; 40755714Skris cl = *p++; 40868651Skris#ifdef CHARSET_EBCDIC 40968651Skris cl = os_toebcdic[cl]; 41068651Skris#endif 41155714Skris if(!cl) { 41255714Skris X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS); 41368651Skris OPENSSL_free(hexbuf); 41455714Skris return NULL; 41555714Skris } 41655714Skris if(isupper(ch)) ch = tolower(ch); 41755714Skris if(isupper(cl)) cl = tolower(cl); 41855714Skris 41955714Skris if((ch >= '0') && (ch <= '9')) ch -= '0'; 42055714Skris else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10; 42155714Skris else goto badhex; 42255714Skris 42355714Skris if((cl >= '0') && (cl <= '9')) cl -= '0'; 42455714Skris else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10; 42555714Skris else goto badhex; 42655714Skris 42755714Skris *q++ = (ch << 4) | cl; 42855714Skris } 42955714Skris 43055714Skris if(len) *len = q - hexbuf; 43155714Skris 43255714Skris return hexbuf; 43355714Skris 43455714Skris err: 43568651Skris if(hexbuf) OPENSSL_free(hexbuf); 43655714Skris X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE); 43755714Skris return NULL; 43855714Skris 43955714Skris badhex: 44068651Skris OPENSSL_free(hexbuf); 44155714Skris X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT); 44255714Skris return NULL; 44355714Skris 44455714Skris} 44555714Skris 44655714Skris/* V2I name comparison function: returns zero if 'name' matches 44755714Skris * cmp or cmp.* 44855714Skris */ 44955714Skris 45055714Skrisint name_cmp(const char *name, const char *cmp) 45155714Skris{ 45255714Skris int len, ret; 45355714Skris char c; 45455714Skris len = strlen(cmp); 45555714Skris if((ret = strncmp(name, cmp, len))) return ret; 45655714Skris c = name[len]; 45755714Skris if(!c || (c=='.')) return 0; 45855714Skris return 1; 45955714Skris} 46068651Skris 46168651Skrisstatic int sk_strcmp(const char * const *a, const char * const *b) 46268651Skris{ 46368651Skris return strcmp(*a, *b); 46468651Skris} 46568651Skris 46668651SkrisSTACK *X509_get1_email(X509 *x) 46768651Skris{ 468109998Smarkm GENERAL_NAMES *gens; 46968651Skris STACK *ret; 47068651Skris gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL); 47168651Skris ret = get_email(X509_get_subject_name(x), gens); 47268651Skris sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 47368651Skris return ret; 47468651Skris} 47568651Skris 47668651SkrisSTACK *X509_REQ_get1_email(X509_REQ *x) 47768651Skris{ 478109998Smarkm GENERAL_NAMES *gens; 47968651Skris STACK_OF(X509_EXTENSION) *exts; 48068651Skris STACK *ret; 48168651Skris exts = X509_REQ_get_extensions(x); 48268651Skris gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL); 48368651Skris ret = get_email(X509_REQ_get_subject_name(x), gens); 48468651Skris sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); 48568651Skris sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free); 48668651Skris return ret; 48768651Skris} 48868651Skris 48968651Skris 490109998Smarkmstatic STACK *get_email(X509_NAME *name, GENERAL_NAMES *gens) 49168651Skris{ 49268651Skris STACK *ret = NULL; 49368651Skris X509_NAME_ENTRY *ne; 49468651Skris ASN1_IA5STRING *email; 49568651Skris GENERAL_NAME *gen; 49668651Skris int i; 49768651Skris /* Now add any email address(es) to STACK */ 49868651Skris i = -1; 49968651Skris /* First supplied X509_NAME */ 50068651Skris while((i = X509_NAME_get_index_by_NID(name, 501109998Smarkm NID_pkcs9_emailAddress, i)) >= 0) { 50268651Skris ne = X509_NAME_get_entry(name, i); 50368651Skris email = X509_NAME_ENTRY_get_data(ne); 50468651Skris if(!append_ia5(&ret, email)) return NULL; 50568651Skris } 50668651Skris for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) 50768651Skris { 50868651Skris gen = sk_GENERAL_NAME_value(gens, i); 50968651Skris if(gen->type != GEN_EMAIL) continue; 51068651Skris if(!append_ia5(&ret, gen->d.ia5)) return NULL; 51168651Skris } 51268651Skris return ret; 51368651Skris} 51468651Skris 51568651Skrisstatic void str_free(void *str) 51668651Skris{ 51768651Skris OPENSSL_free(str); 51868651Skris} 51968651Skris 52068651Skrisstatic int append_ia5(STACK **sk, ASN1_IA5STRING *email) 52168651Skris{ 52268651Skris char *emtmp; 52368651Skris /* First some sanity checks */ 52468651Skris if(email->type != V_ASN1_IA5STRING) return 1; 52568651Skris if(!email->data || !email->length) return 1; 52668651Skris if(!*sk) *sk = sk_new(sk_strcmp); 52768651Skris if(!*sk) return 0; 52868651Skris /* Don't add duplicates */ 52968651Skris if(sk_find(*sk, (char *)email->data) != -1) return 1; 53068651Skris emtmp = BUF_strdup((char *)email->data); 53168651Skris if(!emtmp || !sk_push(*sk, emtmp)) { 53268651Skris X509_email_free(*sk); 53368651Skris *sk = NULL; 53468651Skris return 0; 53568651Skris } 53668651Skris return 1; 53768651Skris} 53868651Skris 53968651Skrisvoid X509_email_free(STACK *sk) 54068651Skris{ 54168651Skris sk_pop_free(sk, str_free); 54268651Skris} 543160814Ssimon 544160814Ssimon/* Convert IP addresses both IPv4 and IPv6 into an 545160814Ssimon * OCTET STRING compatible with RFC3280. 546160814Ssimon */ 547160814Ssimon 548160814SsimonASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc) 549160814Ssimon { 550160814Ssimon unsigned char ipout[16]; 551160814Ssimon ASN1_OCTET_STRING *ret; 552160814Ssimon int iplen; 553160814Ssimon 554160814Ssimon /* If string contains a ':' assume IPv6 */ 555160814Ssimon 556160814Ssimon iplen = a2i_ipadd(ipout, ipasc); 557160814Ssimon 558160814Ssimon if (!iplen) 559160814Ssimon return NULL; 560160814Ssimon 561160814Ssimon ret = ASN1_OCTET_STRING_new(); 562160814Ssimon if (!ret) 563160814Ssimon return NULL; 564160814Ssimon if (!ASN1_OCTET_STRING_set(ret, ipout, iplen)) 565160814Ssimon { 566160814Ssimon ASN1_OCTET_STRING_free(ret); 567160814Ssimon return NULL; 568160814Ssimon } 569160814Ssimon return ret; 570160814Ssimon } 571160814Ssimon 572160814SsimonASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc) 573160814Ssimon { 574160814Ssimon ASN1_OCTET_STRING *ret = NULL; 575160814Ssimon unsigned char ipout[32]; 576160814Ssimon char *iptmp = NULL, *p; 577160814Ssimon int iplen1, iplen2; 578160814Ssimon p = strchr(ipasc,'/'); 579160814Ssimon if (!p) 580160814Ssimon return NULL; 581160814Ssimon iptmp = BUF_strdup(ipasc); 582160814Ssimon if (!iptmp) 583160814Ssimon return NULL; 584160814Ssimon p = iptmp + (p - ipasc); 585160814Ssimon *p++ = 0; 586160814Ssimon 587160814Ssimon iplen1 = a2i_ipadd(ipout, iptmp); 588160814Ssimon 589160814Ssimon if (!iplen1) 590160814Ssimon goto err; 591160814Ssimon 592160814Ssimon iplen2 = a2i_ipadd(ipout + iplen1, p); 593160814Ssimon 594160814Ssimon OPENSSL_free(iptmp); 595160814Ssimon iptmp = NULL; 596160814Ssimon 597160814Ssimon if (!iplen2 || (iplen1 != iplen2)) 598160814Ssimon goto err; 599160814Ssimon 600160814Ssimon ret = ASN1_OCTET_STRING_new(); 601160814Ssimon if (!ret) 602160814Ssimon goto err; 603160814Ssimon if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2)) 604160814Ssimon goto err; 605160814Ssimon 606160814Ssimon return ret; 607160814Ssimon 608160814Ssimon err: 609160814Ssimon if (iptmp) 610160814Ssimon OPENSSL_free(iptmp); 611160814Ssimon if (ret) 612160814Ssimon ASN1_OCTET_STRING_free(ret); 613160814Ssimon return NULL; 614160814Ssimon } 615160814Ssimon 616160814Ssimon 617167612Ssimonint a2i_ipadd(unsigned char *ipout, const char *ipasc) 618160814Ssimon { 619160814Ssimon /* If string contains a ':' assume IPv6 */ 620160814Ssimon 621160814Ssimon if (strchr(ipasc, ':')) 622160814Ssimon { 623160814Ssimon if (!ipv6_from_asc(ipout, ipasc)) 624160814Ssimon return 0; 625160814Ssimon return 16; 626160814Ssimon } 627160814Ssimon else 628160814Ssimon { 629160814Ssimon if (!ipv4_from_asc(ipout, ipasc)) 630160814Ssimon return 0; 631160814Ssimon return 4; 632160814Ssimon } 633160814Ssimon } 634160814Ssimon 635160814Ssimonstatic int ipv4_from_asc(unsigned char *v4, const char *in) 636160814Ssimon { 637160814Ssimon int a0, a1, a2, a3; 638160814Ssimon if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4) 639160814Ssimon return 0; 640160814Ssimon if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255) 641160814Ssimon || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255)) 642160814Ssimon return 0; 643160814Ssimon v4[0] = a0; 644160814Ssimon v4[1] = a1; 645160814Ssimon v4[2] = a2; 646160814Ssimon v4[3] = a3; 647160814Ssimon return 1; 648160814Ssimon } 649160814Ssimon 650160814Ssimontypedef struct { 651160814Ssimon /* Temporary store for IPV6 output */ 652160814Ssimon unsigned char tmp[16]; 653160814Ssimon /* Total number of bytes in tmp */ 654160814Ssimon int total; 655160814Ssimon /* The position of a zero (corresponding to '::') */ 656160814Ssimon int zero_pos; 657160814Ssimon /* Number of zeroes */ 658160814Ssimon int zero_cnt; 659160814Ssimon } IPV6_STAT; 660160814Ssimon 661160814Ssimon 662160814Ssimonstatic int ipv6_from_asc(unsigned char *v6, const char *in) 663160814Ssimon { 664160814Ssimon IPV6_STAT v6stat; 665160814Ssimon v6stat.total = 0; 666160814Ssimon v6stat.zero_pos = -1; 667160814Ssimon v6stat.zero_cnt = 0; 668160814Ssimon /* Treat the IPv6 representation as a list of values 669160814Ssimon * separated by ':'. The presence of a '::' will parse 670160814Ssimon * as one, two or three zero length elements. 671160814Ssimon */ 672160814Ssimon if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat)) 673160814Ssimon return 0; 674160814Ssimon 675160814Ssimon /* Now for some sanity checks */ 676160814Ssimon 677160814Ssimon if (v6stat.zero_pos == -1) 678160814Ssimon { 679160814Ssimon /* If no '::' must have exactly 16 bytes */ 680160814Ssimon if (v6stat.total != 16) 681160814Ssimon return 0; 682160814Ssimon } 683160814Ssimon else 684160814Ssimon { 685160814Ssimon /* If '::' must have less than 16 bytes */ 686160814Ssimon if (v6stat.total == 16) 687160814Ssimon return 0; 688160814Ssimon /* More than three zeroes is an error */ 689160814Ssimon if (v6stat.zero_cnt > 3) 690160814Ssimon return 0; 691160814Ssimon /* Can only have three zeroes if nothing else present */ 692160814Ssimon else if (v6stat.zero_cnt == 3) 693160814Ssimon { 694160814Ssimon if (v6stat.total > 0) 695160814Ssimon return 0; 696160814Ssimon } 697160814Ssimon /* Can only have two zeroes if at start or end */ 698160814Ssimon else if (v6stat.zero_cnt == 2) 699160814Ssimon { 700160814Ssimon if ((v6stat.zero_pos != 0) 701160814Ssimon && (v6stat.zero_pos != v6stat.total)) 702160814Ssimon return 0; 703160814Ssimon } 704160814Ssimon else 705160814Ssimon /* Can only have one zero if *not* start or end */ 706160814Ssimon { 707160814Ssimon if ((v6stat.zero_pos == 0) 708160814Ssimon || (v6stat.zero_pos == v6stat.total)) 709160814Ssimon return 0; 710160814Ssimon } 711160814Ssimon } 712160814Ssimon 713160814Ssimon /* Format result */ 714160814Ssimon 715160814Ssimon /* Copy initial part */ 716160814Ssimon if (v6stat.zero_pos > 0) 717160814Ssimon memcpy(v6, v6stat.tmp, v6stat.zero_pos); 718160814Ssimon /* Zero middle */ 719160814Ssimon if (v6stat.total != 16) 720160814Ssimon memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total); 721160814Ssimon /* Copy final part */ 722160814Ssimon if (v6stat.total != v6stat.zero_pos) 723160814Ssimon memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total, 724160814Ssimon v6stat.tmp + v6stat.zero_pos, 725160814Ssimon v6stat.total - v6stat.zero_pos); 726160814Ssimon 727160814Ssimon return 1; 728160814Ssimon } 729160814Ssimon 730160814Ssimonstatic int ipv6_cb(const char *elem, int len, void *usr) 731160814Ssimon { 732160814Ssimon IPV6_STAT *s = usr; 733160814Ssimon /* Error if 16 bytes written */ 734160814Ssimon if (s->total == 16) 735160814Ssimon return 0; 736160814Ssimon if (len == 0) 737160814Ssimon { 738160814Ssimon /* Zero length element, corresponds to '::' */ 739160814Ssimon if (s->zero_pos == -1) 740160814Ssimon s->zero_pos = s->total; 741160814Ssimon /* If we've already got a :: its an error */ 742160814Ssimon else if (s->zero_pos != s->total) 743160814Ssimon return 0; 744160814Ssimon s->zero_cnt++; 745160814Ssimon } 746160814Ssimon else 747160814Ssimon { 748160814Ssimon /* If more than 4 characters could be final a.b.c.d form */ 749160814Ssimon if (len > 4) 750160814Ssimon { 751160814Ssimon /* Need at least 4 bytes left */ 752160814Ssimon if (s->total > 12) 753160814Ssimon return 0; 754160814Ssimon /* Must be end of string */ 755160814Ssimon if (elem[len]) 756160814Ssimon return 0; 757160814Ssimon if (!ipv4_from_asc(s->tmp + s->total, elem)) 758160814Ssimon return 0; 759160814Ssimon s->total += 4; 760160814Ssimon } 761160814Ssimon else 762160814Ssimon { 763160814Ssimon if (!ipv6_hex(s->tmp + s->total, elem, len)) 764160814Ssimon return 0; 765160814Ssimon s->total += 2; 766160814Ssimon } 767160814Ssimon } 768160814Ssimon return 1; 769160814Ssimon } 770160814Ssimon 771160814Ssimon/* Convert a string of up to 4 hex digits into the corresponding 772160814Ssimon * IPv6 form. 773160814Ssimon */ 774160814Ssimon 775160814Ssimonstatic int ipv6_hex(unsigned char *out, const char *in, int inlen) 776160814Ssimon { 777160814Ssimon unsigned char c; 778160814Ssimon unsigned int num = 0; 779160814Ssimon if (inlen > 4) 780160814Ssimon return 0; 781160814Ssimon while(inlen--) 782160814Ssimon { 783160814Ssimon c = *in++; 784160814Ssimon num <<= 4; 785160814Ssimon if ((c >= '0') && (c <= '9')) 786160814Ssimon num |= c - '0'; 787160814Ssimon else if ((c >= 'A') && (c <= 'F')) 788160814Ssimon num |= c - 'A' + 10; 789160814Ssimon else if ((c >= 'a') && (c <= 'f')) 790160814Ssimon num |= c - 'a' + 10; 791160814Ssimon else 792160814Ssimon return 0; 793160814Ssimon } 794160814Ssimon out[0] = num >> 8; 795160814Ssimon out[1] = num & 0xff; 796160814Ssimon return 1; 797160814Ssimon } 798160814Ssimon 799160814Ssimon 800160814Ssimonint X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk, 801160814Ssimon unsigned long chtype) 802160814Ssimon { 803160814Ssimon CONF_VALUE *v; 804160814Ssimon int i, mval; 805160814Ssimon char *p, *type; 806160814Ssimon if (!nm) 807160814Ssimon return 0; 808160814Ssimon 809160814Ssimon for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) 810160814Ssimon { 811160814Ssimon v=sk_CONF_VALUE_value(dn_sk,i); 812160814Ssimon type=v->name; 813160814Ssimon /* Skip past any leading X. X: X, etc to allow for 814160814Ssimon * multiple instances 815160814Ssimon */ 816160814Ssimon for(p = type; *p ; p++) 817160814Ssimon#ifndef CHARSET_EBCDIC 818160814Ssimon if ((*p == ':') || (*p == ',') || (*p == '.')) 819160814Ssimon#else 820160814Ssimon if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.'])) 821160814Ssimon#endif 822160814Ssimon { 823160814Ssimon p++; 824160814Ssimon if(*p) type = p; 825160814Ssimon break; 826160814Ssimon } 827160814Ssimon#ifndef CHARSET_EBCDIC 828160814Ssimon if (*type == '+') 829160814Ssimon#else 830160814Ssimon if (*type == os_toascii['+']) 831160814Ssimon#endif 832160814Ssimon { 833160814Ssimon mval = -1; 834160814Ssimon type++; 835160814Ssimon } 836160814Ssimon else 837160814Ssimon mval = 0; 838160814Ssimon if (!X509_NAME_add_entry_by_txt(nm,type, chtype, 839160814Ssimon (unsigned char *) v->value,-1,-1,mval)) 840160814Ssimon return 0; 841160814Ssimon 842160814Ssimon } 843160814Ssimon return 1; 844160814Ssimon } 845