2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/buffer.h>
13 #include <openssl/bn.h>
14 #include <openssl/objects.h>
15 #include <openssl/x509.h>
16 #include <openssl/x509v3.h>
17 #include "crypto/asn1.h"
18 #include "crypto/x509.h"
20 #ifndef OPENSSL_NO_STDIO
21 int X509_print_fp(FILE *fp, X509 *x)
23 return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
26 int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
32 if ((b = BIO_new(BIO_s_file())) == NULL) {
33 X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);
36 BIO_set_fp(b, fp, BIO_NOCLOSE);
37 ret = X509_print_ex(b, x, nmflag, cflag);
43 int X509_print(BIO *bp, X509 *x)
45 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
48 int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
53 char *m = NULL, mlch = ' ';
56 EVP_PKEY *pkey = NULL;
59 if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
64 if (nmflags == X509_FLAG_COMPAT)
67 if (!(cflag & X509_FLAG_NO_HEADER)) {
68 if (BIO_write(bp, "Certificate:\n", 13) <= 0)
70 if (BIO_write(bp, " Data:\n", 10) <= 0)
73 if (!(cflag & X509_FLAG_NO_VERSION)) {
74 l = X509_get_version(x);
75 if (l >= 0 && l <= 2) {
76 if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", "", l + 1, (unsigned long)l) <= 0)
79 if (BIO_printf(bp, "%8sVersion: Unknown (%ld)\n", "", l) <= 0)
83 if (!(cflag & X509_FLAG_NO_SERIAL)) {
85 if (BIO_write(bp, " Serial Number:", 22) <= 0)
88 bs = X509_get_serialNumber(x);
89 if (bs->length <= (int)sizeof(long)) {
91 l = ASN1_INTEGER_get(bs);
98 if (bs->type == V_ASN1_NEG_INTEGER) {
99 ul = 0 - (unsigned long)l;
105 if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, ul, neg, ul) <= 0)
108 neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
109 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
112 for (i = 0; i < bs->length; i++) {
113 if (BIO_printf(bp, "%02x%c", bs->data[i],
114 ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
121 if (!(cflag & X509_FLAG_NO_SIGNAME)) {
122 const X509_ALGOR *tsig_alg = X509_get0_tbs_sigalg(x);
124 if (BIO_puts(bp, " ") <= 0)
126 if (X509_signature_print(bp, tsig_alg, NULL) <= 0)
130 if (!(cflag & X509_FLAG_NO_ISSUER)) {
131 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0)
133 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
136 if (BIO_write(bp, "\n", 1) <= 0)
139 if (!(cflag & X509_FLAG_NO_VALIDITY)) {
140 if (BIO_write(bp, " Validity\n", 17) <= 0)
142 if (BIO_write(bp, " Not Before: ", 24) <= 0)
144 if (!ASN1_TIME_print(bp, X509_get0_notBefore(x)))
146 if (BIO_write(bp, "\n Not After : ", 25) <= 0)
148 if (!ASN1_TIME_print(bp, X509_get0_notAfter(x)))
150 if (BIO_write(bp, "\n", 1) <= 0)
153 if (!(cflag & X509_FLAG_NO_SUBJECT)) {
154 if (BIO_printf(bp, " Subject:%c", mlch) <= 0)
156 if (X509_NAME_print_ex
157 (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
159 if (BIO_write(bp, "\n", 1) <= 0)
162 if (!(cflag & X509_FLAG_NO_PUBKEY)) {
163 X509_PUBKEY *xpkey = X509_get_X509_PUBKEY(x);
165 X509_PUBKEY_get0_param(&xpoid, NULL, NULL, NULL, xpkey);
166 if (BIO_write(bp, " Subject Public Key Info:\n", 33) <= 0)
168 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
170 if (i2a_ASN1_OBJECT(bp, xpoid) <= 0)
172 if (BIO_puts(bp, "\n") <= 0)
175 pkey = X509_get0_pubkey(x);
177 BIO_printf(bp, "%12sUnable to load Public Key\n", "");
178 ERR_print_errors(bp);
180 EVP_PKEY_print_public(bp, pkey, 16, NULL);
184 if (!(cflag & X509_FLAG_NO_IDS)) {
185 const ASN1_BIT_STRING *iuid, *suid;
186 X509_get0_uids(x, &iuid, &suid);
188 if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
190 if (!X509_signature_dump(bp, iuid, 12))
194 if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
196 if (!X509_signature_dump(bp, suid, 12))
201 if (!(cflag & X509_FLAG_NO_EXTENSIONS))
202 X509V3_extensions_print(bp, "X509v3 extensions",
203 X509_get0_extensions(x), cflag, 8);
205 if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
206 const X509_ALGOR *sig_alg;
207 const ASN1_BIT_STRING *sig;
208 X509_get0_signature(&sig, &sig_alg, x);
209 if (X509_signature_print(bp, sig_alg, sig) <= 0)
212 if (!(cflag & X509_FLAG_NO_AUX)) {
213 if (!X509_aux_print(bp, x, 0))
222 int X509_ocspid_print(BIO *bp, X509 *x)
224 unsigned char *der = NULL;
225 unsigned char *dertmp;
228 unsigned char SHA1md[SHA_DIGEST_LENGTH];
229 ASN1_BIT_STRING *keybstr;
230 const X509_NAME *subj;
233 * display the hash of the subject as it would appear in OCSP requests
235 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0)
237 subj = X509_get_subject_name(x);
238 derlen = i2d_X509_NAME(subj, NULL);
239 if ((der = dertmp = OPENSSL_malloc(derlen)) == NULL)
241 i2d_X509_NAME(subj, &dertmp);
243 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
245 for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
246 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
253 * display the hash of the public key as it would appear in OCSP requests
255 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0)
258 keybstr = X509_get0_pubkey_bitstr(x);
263 if (!EVP_Digest(ASN1_STRING_get0_data(keybstr),
264 ASN1_STRING_length(keybstr), SHA1md, NULL, EVP_sha1(),
267 for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
268 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
271 BIO_printf(bp, "\n");
279 int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
281 const unsigned char *s;
286 for (i = 0; i < n; i++) {
288 if (i > 0 && BIO_write(bp, "\n", 1) <= 0)
290 if (BIO_indent(bp, indent, indent) <= 0)
293 if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
296 if (BIO_write(bp, "\n", 1) != 1)
302 int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg,
303 const ASN1_STRING *sig)
307 if (BIO_printf(bp, "%*sSignature Algorithm: ", indent, "") <= 0)
309 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
312 if (sig && BIO_printf(bp, "\n%*sSignature Value:", indent, "") <= 0)
314 sig_nid = OBJ_obj2nid(sigalg->algorithm);
315 if (sig_nid != NID_undef) {
316 int pkey_nid, dig_nid;
317 const EVP_PKEY_ASN1_METHOD *ameth;
318 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
319 ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
320 if (ameth && ameth->sig_print)
321 return ameth->sig_print(bp, sigalg, sig, indent + 4, 0);
324 if (BIO_write(bp, "\n", 1) != 1)
327 return X509_signature_dump(bp, sig, indent + 4);
331 int X509_aux_print(BIO *out, X509 *x, int indent)
333 char oidstr[80], first;
334 STACK_OF(ASN1_OBJECT) *trust, *reject;
335 const unsigned char *alias, *keyid;
338 if (X509_trusted(x) == 0)
340 trust = X509_get0_trust_objects(x);
341 reject = X509_get0_reject_objects(x);
344 BIO_printf(out, "%*sTrusted Uses:\n%*s", indent, "", indent + 2, "");
345 for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
350 OBJ_obj2txt(oidstr, sizeof(oidstr),
351 sk_ASN1_OBJECT_value(trust, i), 0);
352 BIO_puts(out, oidstr);
356 BIO_printf(out, "%*sNo Trusted Uses.\n", indent, "");
359 BIO_printf(out, "%*sRejected Uses:\n%*s", indent, "", indent + 2, "");
360 for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
365 OBJ_obj2txt(oidstr, sizeof(oidstr),
366 sk_ASN1_OBJECT_value(reject, i), 0);
367 BIO_puts(out, oidstr);
371 BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
372 alias = X509_alias_get0(x, NULL);
374 BIO_printf(out, "%*sAlias: %s\n", indent, "", alias);
375 keyid = X509_keyid_get0(x, &keyidlen);
377 BIO_printf(out, "%*sKey Id: ", indent, "");
378 for (i = 0; i < keyidlen; i++)
379 BIO_printf(out, "%s%02X", i ? ":" : "", keyid[i]);
380 BIO_write(out, "\n", 1);
386 * Helper functions for improving certificate verification error diagnostics
389 int x509_print_ex_brief(BIO *bio, X509 *cert, unsigned long neg_cflags)
391 unsigned long flags = ASN1_STRFLGS_RFC2253 | ASN1_STRFLGS_ESC_QUOTE |
392 XN_FLAG_SEP_CPLUS_SPC | XN_FLAG_FN_SN;
395 return BIO_printf(bio, " (no certificate)\n") > 0;
396 if (BIO_printf(bio, " certificate\n") <= 0
397 || !X509_print_ex(bio, cert, flags, ~X509_FLAG_NO_SUBJECT))
399 if (X509_check_issued((X509 *)cert, cert) == X509_V_OK) {
400 if (BIO_printf(bio, " self-issued\n") <= 0)
403 if (BIO_printf(bio, " ") <= 0
404 || !X509_print_ex(bio, cert, flags, ~X509_FLAG_NO_ISSUER))
407 if (!X509_print_ex(bio, cert, flags,
408 ~(X509_FLAG_NO_SERIAL | X509_FLAG_NO_VALIDITY)))
410 if (X509_cmp_current_time(X509_get0_notBefore(cert)) > 0)
411 if (BIO_printf(bio, " not yet valid\n") <= 0)
413 if (X509_cmp_current_time(X509_get0_notAfter(cert)) < 0)
414 if (BIO_printf(bio, " no more valid\n") <= 0)
416 return X509_print_ex(bio, cert, flags, ~(neg_cflags));
419 static int print_certs(BIO *bio, const STACK_OF(X509) *certs)
423 if (certs == NULL || sk_X509_num(certs) <= 0)
424 return BIO_printf(bio, " (no certificates)\n") >= 0;
426 for (i = 0; i < sk_X509_num(certs); i++) {
427 X509 *cert = sk_X509_value(certs, i);
428 if (cert != NULL && !x509_print_ex_brief(bio, cert, 0))
434 static int print_store_certs(BIO *bio, X509_STORE *store)
437 STACK_OF(X509) *certs = X509_STORE_get1_all_certs(store);
438 int ret = print_certs(bio, certs);
440 sk_X509_pop_free(certs, X509_free);
443 return BIO_printf(bio, " (no trusted store)\n") >= 0;
447 /* Extend the error queue with details on a failed cert verification */
448 int X509_STORE_CTX_print_verify_cb(int ok, X509_STORE_CTX *ctx)
450 if (ok == 0 && ctx != NULL) {
451 int cert_error = X509_STORE_CTX_get_error(ctx);
452 int depth = X509_STORE_CTX_get_error_depth(ctx);
453 X509 *cert = X509_STORE_CTX_get_current_cert(ctx);
454 BIO *bio = BIO_new(BIO_s_mem()); /* may be NULL */
456 BIO_printf(bio, "%s at depth=%d error=%d (%s)\n",
457 X509_STORE_CTX_get0_parent_ctx(ctx) != NULL
458 ? "CRL path validation" : "certificate verification",
460 X509_verify_cert_error_string(cert_error));
461 BIO_printf(bio, "failure for:\n");
462 x509_print_ex_brief(bio, cert, X509_FLAG_NO_EXTENSIONS);
463 if (cert_error == X509_V_ERR_CERT_UNTRUSTED
464 || cert_error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
465 || cert_error == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
466 || cert_error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
467 || cert_error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
468 || cert_error == X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER
469 || cert_error == X509_V_ERR_STORE_LOOKUP) {
470 BIO_printf(bio, "non-trusted certs:\n");
471 print_certs(bio, X509_STORE_CTX_get0_untrusted(ctx));
472 BIO_printf(bio, "certs in trust store:\n");
473 print_store_certs(bio, X509_STORE_CTX_get0_store(ctx));
475 CMPerr(0, X509_R_CERTIFICATE_VERIFICATION_FAILED);
476 ERR_add_error_mem_bio("\n", bio);
481 * TODO we could check policies here too, e.g.:
482 * if (cert_error == X509_V_OK && ok == 2)
483 * policies_print(NULL, ctx);