diff options
Diffstat (limited to 'thirdparty/openssl/crypto/x509v3/v3_ncons.c')
| -rw-r--r-- | thirdparty/openssl/crypto/x509v3/v3_ncons.c | 51 |
1 files changed, 46 insertions, 5 deletions
diff --git a/thirdparty/openssl/crypto/x509v3/v3_ncons.c b/thirdparty/openssl/crypto/x509v3/v3_ncons.c index 2855269668..1184091ccf 100644 --- a/thirdparty/openssl/crypto/x509v3/v3_ncons.c +++ b/thirdparty/openssl/crypto/x509v3/v3_ncons.c @@ -107,6 +107,47 @@ ASN1_SEQUENCE(NAME_CONSTRAINTS) = { IMPLEMENT_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE) IMPLEMENT_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS) +/* + * We cannot use strncasecmp here because that applies locale specific rules. + * For example in Turkish 'I' is not the uppercase character for 'i'. We need to + * do a simple ASCII case comparison ignoring the locale (that is why we use + * numeric constants below). + */ +static int ia5ncasecmp(const char *s1, const char *s2, size_t n) +{ + for (; n > 0; n--, s1++, s2++) { + if (*s1 != *s2) { + unsigned char c1 = (unsigned char)*s1, c2 = (unsigned char)*s2; + + /* Convert to lower case */ + if (c1 >= 0x41 /* A */ && c1 <= 0x5A /* Z */) + c1 += 0x20; + if (c2 >= 0x41 /* A */ && c2 <= 0x5A /* Z */) + c2 += 0x20; + + if (c1 == c2) + continue; + + if (c1 < c2) + return -1; + + /* c1 > c2 */ + return 1; + } else if (*s1 == 0) { + /* If we get here we know that *s2 == 0 too */ + return 0; + } + } + + return 0; +} + +static int ia5casecmp(const char *s1, const char *s2) +{ + /* No portable definition of SIZE_MAX, so we use (size_t)(-1) instead */ + return ia5ncasecmp(s1, s2, (size_t)(-1)); +} + static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) { @@ -384,7 +425,7 @@ static int nc_dns(ASN1_IA5STRING *dns, ASN1_IA5STRING *base) return X509_V_ERR_PERMITTED_VIOLATION; } - if (strcasecmp(baseptr, dnsptr)) + if (ia5casecmp(baseptr, dnsptr)) return X509_V_ERR_PERMITTED_VIOLATION; return X509_V_OK; @@ -404,7 +445,7 @@ static int nc_email(ASN1_IA5STRING *eml, ASN1_IA5STRING *base) if (!baseat && (*baseptr == '.')) { if (eml->length > base->length) { emlptr += eml->length - base->length; - if (!strcasecmp(baseptr, emlptr)) + if (ia5casecmp(baseptr, emlptr) == 0) return X509_V_OK; } return X509_V_ERR_PERMITTED_VIOLATION; @@ -425,7 +466,7 @@ static int nc_email(ASN1_IA5STRING *eml, ASN1_IA5STRING *base) } emlptr = emlat + 1; /* Just have hostname left to match: case insensitive */ - if (strcasecmp(baseptr, emlptr)) + if (ia5casecmp(baseptr, emlptr)) return X509_V_ERR_PERMITTED_VIOLATION; return X509_V_OK; @@ -464,14 +505,14 @@ static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base) if (*baseptr == '.') { if (hostlen > base->length) { p = hostptr + hostlen - base->length; - if (!strncasecmp(p, baseptr, base->length)) + if (ia5ncasecmp(p, baseptr, base->length) == 0) return X509_V_OK; } return X509_V_ERR_PERMITTED_VIOLATION; } if ((base->length != (int)hostlen) - || strncasecmp(hostptr, baseptr, hostlen)) + || ia5ncasecmp(hostptr, baseptr, hostlen)) return X509_V_ERR_PERMITTED_VIOLATION; return X509_V_OK; |