|  | /* | 
|  | * Copyright 2012-2016 The OpenSSL Project Authors. All Rights Reserved. | 
|  | * | 
|  | * Licensed under the OpenSSL license (the "License").  You may not use | 
|  | * this file except in compliance with the License.  You can obtain a copy | 
|  | * in the file LICENSE in the source distribution or at | 
|  | * https://www.openssl.org/source/license.html | 
|  | */ | 
|  |  | 
|  | #include <openssl/x509.h> | 
|  | #include <openssl/x509v3.h> | 
|  | #include "../e_os.h" | 
|  | #include <string.h> | 
|  |  | 
|  | static const char *const names[] = { | 
|  | "a", "b", ".", "*", "@", | 
|  | ".a", "a.", ".b", "b.", ".*", "*.", "*@", "@*", "a@", "@a", "b@", "..", | 
|  | "-example.com", "example-.com", | 
|  | "@@", "**", "*.com", "*com", "*.*.com", "*com", "com*", "*example.com", | 
|  | "*@example.com", "test@*.example.com", "example.com", "www.example.com", | 
|  | "test.www.example.com", "*.example.com", "*.www.example.com", | 
|  | "test.*.example.com", "www.*.com", | 
|  | ".www.example.com", "*www.example.com", | 
|  | "example.net", "xn--rger-koa.example.com", | 
|  | "*.xn--rger-koa.example.com", "www.xn--rger-koa.example.com", | 
|  | "*.good--example.com", "www.good--example.com", | 
|  | "*.xn--bar.com", "xn--foo.xn--bar.com", | 
|  | "a.example.com", "b.example.com", | 
|  | "postmaster@example.com", "Postmaster@example.com", | 
|  | "postmaster@EXAMPLE.COM", | 
|  | NULL | 
|  | }; | 
|  |  | 
|  | static const char *const exceptions[] = { | 
|  | "set CN: host: [*.example.com] matches [a.example.com]", | 
|  | "set CN: host: [*.example.com] matches [b.example.com]", | 
|  | "set CN: host: [*.example.com] matches [www.example.com]", | 
|  | "set CN: host: [*.example.com] matches [xn--rger-koa.example.com]", | 
|  | "set CN: host: [*.www.example.com] matches [test.www.example.com]", | 
|  | "set CN: host: [*.www.example.com] matches [.www.example.com]", | 
|  | "set CN: host: [*www.example.com] matches [www.example.com]", | 
|  | "set CN: host: [test.www.example.com] matches [.www.example.com]", | 
|  | "set CN: host: [*.xn--rger-koa.example.com] matches [www.xn--rger-koa.example.com]", | 
|  | "set CN: host: [*.xn--bar.com] matches [xn--foo.xn--bar.com]", | 
|  | "set CN: host: [*.good--example.com] matches [www.good--example.com]", | 
|  | "set CN: host-no-wildcards: [*.www.example.com] matches [.www.example.com]", | 
|  | "set CN: host-no-wildcards: [test.www.example.com] matches [.www.example.com]", | 
|  | "set emailAddress: email: [postmaster@example.com] does not match [Postmaster@example.com]", | 
|  | "set emailAddress: email: [postmaster@EXAMPLE.COM] does not match [Postmaster@example.com]", | 
|  | "set emailAddress: email: [Postmaster@example.com] does not match [postmaster@example.com]", | 
|  | "set emailAddress: email: [Postmaster@example.com] does not match [postmaster@EXAMPLE.COM]", | 
|  | "set dnsName: host: [*.example.com] matches [www.example.com]", | 
|  | "set dnsName: host: [*.example.com] matches [a.example.com]", | 
|  | "set dnsName: host: [*.example.com] matches [b.example.com]", | 
|  | "set dnsName: host: [*.example.com] matches [xn--rger-koa.example.com]", | 
|  | "set dnsName: host: [*.www.example.com] matches [test.www.example.com]", | 
|  | "set dnsName: host-no-wildcards: [*.www.example.com] matches [.www.example.com]", | 
|  | "set dnsName: host-no-wildcards: [test.www.example.com] matches [.www.example.com]", | 
|  | "set dnsName: host: [*.www.example.com] matches [.www.example.com]", | 
|  | "set dnsName: host: [*www.example.com] matches [www.example.com]", | 
|  | "set dnsName: host: [test.www.example.com] matches [.www.example.com]", | 
|  | "set dnsName: host: [*.xn--rger-koa.example.com] matches [www.xn--rger-koa.example.com]", | 
|  | "set dnsName: host: [*.xn--bar.com] matches [xn--foo.xn--bar.com]", | 
|  | "set dnsName: host: [*.good--example.com] matches [www.good--example.com]", | 
|  | "set rfc822Name: email: [postmaster@example.com] does not match [Postmaster@example.com]", | 
|  | "set rfc822Name: email: [Postmaster@example.com] does not match [postmaster@example.com]", | 
|  | "set rfc822Name: email: [Postmaster@example.com] does not match [postmaster@EXAMPLE.COM]", | 
|  | "set rfc822Name: email: [postmaster@EXAMPLE.COM] does not match [Postmaster@example.com]", | 
|  | NULL | 
|  | }; | 
|  |  | 
|  | static int is_exception(const char *msg) | 
|  | { | 
|  | const char *const *p; | 
|  | for (p = exceptions; *p; ++p) | 
|  | if (strcmp(msg, *p) == 0) | 
|  | return 1; | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | static int set_cn(X509 *crt, ...) | 
|  | { | 
|  | int ret = 0; | 
|  | X509_NAME *n = NULL; | 
|  | va_list ap; | 
|  | va_start(ap, crt); | 
|  | n = X509_NAME_new(); | 
|  | if (n == NULL) | 
|  | goto out; | 
|  | while (1) { | 
|  | int nid; | 
|  | const char *name; | 
|  | nid = va_arg(ap, int); | 
|  | if (nid == 0) | 
|  | break; | 
|  | name = va_arg(ap, const char *); | 
|  | if (!X509_NAME_add_entry_by_NID(n, nid, MBSTRING_ASC, | 
|  | (unsigned char *)name, -1, -1, 1)) | 
|  | goto out; | 
|  | } | 
|  | if (!X509_set_subject_name(crt, n)) | 
|  | goto out; | 
|  | ret = 1; | 
|  | out: | 
|  | X509_NAME_free(n); | 
|  | va_end(ap); | 
|  | return ret; | 
|  | } | 
|  |  | 
|  | /*- | 
|  | int             X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc); | 
|  | X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, | 
|  | int nid, int crit, ASN1_OCTET_STRING *data); | 
|  | int             X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc); | 
|  | */ | 
|  |  | 
|  | static int set_altname(X509 *crt, ...) | 
|  | { | 
|  | int ret = 0; | 
|  | GENERAL_NAMES *gens = NULL; | 
|  | GENERAL_NAME *gen = NULL; | 
|  | ASN1_IA5STRING *ia5 = NULL; | 
|  | va_list ap; | 
|  | va_start(ap, crt); | 
|  | gens = sk_GENERAL_NAME_new_null(); | 
|  | if (gens == NULL) | 
|  | goto out; | 
|  | while (1) { | 
|  | int type; | 
|  | const char *name; | 
|  | type = va_arg(ap, int); | 
|  | if (type == 0) | 
|  | break; | 
|  | name = va_arg(ap, const char *); | 
|  |  | 
|  | gen = GENERAL_NAME_new(); | 
|  | if (gen == NULL) | 
|  | goto out; | 
|  | ia5 = ASN1_IA5STRING_new(); | 
|  | if (ia5 == NULL) | 
|  | goto out; | 
|  | if (!ASN1_STRING_set(ia5, name, -1)) | 
|  | goto out; | 
|  | switch (type) { | 
|  | case GEN_EMAIL: | 
|  | case GEN_DNS: | 
|  | GENERAL_NAME_set0_value(gen, type, ia5); | 
|  | ia5 = NULL; | 
|  | break; | 
|  | default: | 
|  | abort(); | 
|  | } | 
|  | sk_GENERAL_NAME_push(gens, gen); | 
|  | gen = NULL; | 
|  | } | 
|  | if (!X509_add1_ext_i2d(crt, NID_subject_alt_name, gens, 0, 0)) | 
|  | goto out; | 
|  | ret = 1; | 
|  | out: | 
|  | ASN1_IA5STRING_free(ia5); | 
|  | GENERAL_NAME_free(gen); | 
|  | GENERAL_NAMES_free(gens); | 
|  | va_end(ap); | 
|  | return ret; | 
|  | } | 
|  |  | 
|  | static int set_cn1(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_commonName, name, 0); | 
|  | } | 
|  |  | 
|  | static int set_cn_and_email(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_commonName, name, | 
|  | NID_pkcs9_emailAddress, "dummy@example.com", 0); | 
|  | } | 
|  |  | 
|  | static int set_cn2(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_commonName, "dummy value", | 
|  | NID_commonName, name, 0); | 
|  | } | 
|  |  | 
|  | static int set_cn3(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_commonName, name, | 
|  | NID_commonName, "dummy value", 0); | 
|  | } | 
|  |  | 
|  | static int set_email1(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_pkcs9_emailAddress, name, 0); | 
|  | } | 
|  |  | 
|  | static int set_email2(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_pkcs9_emailAddress, "dummy@example.com", | 
|  | NID_pkcs9_emailAddress, name, 0); | 
|  | } | 
|  |  | 
|  | static int set_email3(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_pkcs9_emailAddress, name, | 
|  | NID_pkcs9_emailAddress, "dummy@example.com", 0); | 
|  | } | 
|  |  | 
|  | static int set_email_and_cn(X509 *crt, const char *name) | 
|  | { | 
|  | return set_cn(crt, NID_pkcs9_emailAddress, name, | 
|  | NID_commonName, "www.example.org", 0); | 
|  | } | 
|  |  | 
|  | static int set_altname_dns(X509 *crt, const char *name) | 
|  | { | 
|  | return set_altname(crt, GEN_DNS, name, 0); | 
|  | } | 
|  |  | 
|  | static int set_altname_email(X509 *crt, const char *name) | 
|  | { | 
|  | return set_altname(crt, GEN_EMAIL, name, 0); | 
|  | } | 
|  |  | 
|  | struct set_name_fn { | 
|  | int (*fn) (X509 *, const char *); | 
|  | const char *name; | 
|  | int host; | 
|  | int email; | 
|  | }; | 
|  |  | 
|  | static const struct set_name_fn name_fns[] = { | 
|  | {set_cn1, "set CN", 1, 0}, | 
|  | {set_cn2, "set CN", 1, 0}, | 
|  | {set_cn3, "set CN", 1, 0}, | 
|  | {set_cn_and_email, "set CN", 1, 0}, | 
|  | {set_email1, "set emailAddress", 0, 1}, | 
|  | {set_email2, "set emailAddress", 0, 1}, | 
|  | {set_email3, "set emailAddress", 0, 1}, | 
|  | {set_email_and_cn, "set emailAddress", 0, 1}, | 
|  | {set_altname_dns, "set dnsName", 1, 0}, | 
|  | {set_altname_email, "set rfc822Name", 0, 1}, | 
|  | {NULL, NULL, 0} | 
|  | }; | 
|  |  | 
|  | static X509 *make_cert() | 
|  | { | 
|  | X509 *ret = NULL; | 
|  | X509 *crt = NULL; | 
|  | X509_NAME *issuer = NULL; | 
|  | crt = X509_new(); | 
|  | if (crt == NULL) | 
|  | goto out; | 
|  | if (!X509_set_version(crt, 3)) | 
|  | goto out; | 
|  | ret = crt; | 
|  | crt = NULL; | 
|  | out: | 
|  | X509_NAME_free(issuer); | 
|  | return ret; | 
|  | } | 
|  |  | 
|  | static int errors; | 
|  |  | 
|  | static void check_message(const struct set_name_fn *fn, const char *op, | 
|  | const char *nameincert, int match, const char *name) | 
|  | { | 
|  | char msg[1024]; | 
|  | if (match < 0) | 
|  | return; | 
|  | BIO_snprintf(msg, sizeof(msg), "%s: %s: [%s] %s [%s]", | 
|  | fn->name, op, nameincert, | 
|  | match ? "matches" : "does not match", name); | 
|  | if (is_exception(msg)) | 
|  | return; | 
|  | puts(msg); | 
|  | ++errors; | 
|  | } | 
|  |  | 
|  | static void run_cert(X509 *crt, const char *nameincert, | 
|  | const struct set_name_fn *fn) | 
|  | { | 
|  | const char *const *pname = names; | 
|  | while (*pname) { | 
|  | int samename = strcasecmp(nameincert, *pname) == 0; | 
|  | size_t namelen = strlen(*pname); | 
|  | char *name = malloc(namelen); | 
|  | int match, ret; | 
|  | memcpy(name, *pname, namelen); | 
|  |  | 
|  | ret = X509_check_host(crt, name, namelen, 0, NULL); | 
|  | match = -1; | 
|  | if (ret < 0) { | 
|  | fprintf(stderr, "internal error in X509_check_host"); | 
|  | ++errors; | 
|  | } else if (fn->host) { | 
|  | if (ret == 1 && !samename) | 
|  | match = 1; | 
|  | if (ret == 0 && samename) | 
|  | match = 0; | 
|  | } else if (ret == 1) | 
|  | match = 1; | 
|  | check_message(fn, "host", nameincert, match, *pname); | 
|  |  | 
|  | ret = X509_check_host(crt, name, namelen, | 
|  | X509_CHECK_FLAG_NO_WILDCARDS, NULL); | 
|  | match = -1; | 
|  | if (ret < 0) { | 
|  | fprintf(stderr, "internal error in X509_check_host"); | 
|  | ++errors; | 
|  | } else if (fn->host) { | 
|  | if (ret == 1 && !samename) | 
|  | match = 1; | 
|  | if (ret == 0 && samename) | 
|  | match = 0; | 
|  | } else if (ret == 1) | 
|  | match = 1; | 
|  | check_message(fn, "host-no-wildcards", nameincert, match, *pname); | 
|  |  | 
|  | ret = X509_check_email(crt, name, namelen, 0); | 
|  | match = -1; | 
|  | if (fn->email) { | 
|  | if (ret && !samename) | 
|  | match = 1; | 
|  | if (!ret && samename && strchr(nameincert, '@') != NULL) | 
|  | match = 0; | 
|  | } else if (ret) | 
|  | match = 1; | 
|  | check_message(fn, "email", nameincert, match, *pname); | 
|  | ++pname; | 
|  | free(name); | 
|  | } | 
|  | } | 
|  |  | 
|  | int main(void) | 
|  | { | 
|  | const struct set_name_fn *pfn = name_fns; | 
|  | while (pfn->name) { | 
|  | const char *const *pname = names; | 
|  | while (*pname) { | 
|  | X509 *crt = make_cert(); | 
|  | if (crt == NULL) { | 
|  | fprintf(stderr, "make_cert failed\n"); | 
|  | return 1; | 
|  | } | 
|  | if (!pfn->fn(crt, *pname)) { | 
|  | fprintf(stderr, "X509 name setting failed\n"); | 
|  | return 1; | 
|  | } | 
|  | run_cert(crt, *pname, pfn); | 
|  | X509_free(crt); | 
|  | ++pname; | 
|  | } | 
|  | ++pfn; | 
|  | } | 
|  | return errors > 0 ? 1 : 0; | 
|  | } |