diff options
Diffstat (limited to 'crypto/openssl/crypto/x509v3/v3_utl.c')
| -rw-r--r-- | crypto/openssl/crypto/x509v3/v3_utl.c | 318 |
1 files changed, 314 insertions, 4 deletions
diff --git a/crypto/openssl/crypto/x509v3/v3_utl.c b/crypto/openssl/crypto/x509v3/v3_utl.c index 34ac2998defe..7911c4bdaf3f 100644 --- a/crypto/openssl/crypto/x509v3/v3_utl.c +++ b/crypto/openssl/crypto/x509v3/v3_utl.c @@ -1,9 +1,9 @@ /* v3_utl.c */ /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL - * project 1999. + * project. */ /* ==================================================================== - * Copyright (c) 1999 The OpenSSL Project. All rights reserved. + * 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 @@ -63,6 +63,7 @@ #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); @@ -70,6 +71,12 @@ 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, @@ -156,11 +163,11 @@ ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value) ASN1_INTEGER *aint; int isneg, ishex; int ret; - bn = BN_new(); if (!value) { X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE); return 0; } + bn = BN_new(); if (value[0] == '-') { value++; isneg = 1; @@ -174,7 +181,8 @@ ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value) if (ishex) ret = BN_hex2bn(&bn, value); else ret = BN_dec2bn(&bn, value); - if (!ret) { + if (!ret || value[ret]) { + BN_free(bn); X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR); return 0; } @@ -533,3 +541,305 @@ 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; + } |