2 * Copyright 1995-2020 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 DEFINE_STACK_OF(ASN1_OBJECT)
22 #ifndef OPENSSL_NO_STDIO
23 int X509_print_fp(FILE *fp, X509 *x)
25 return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
28 int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
34 if ((b = BIO_new(BIO_s_file())) == NULL) {
35 X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);
38 BIO_set_fp(b, fp, BIO_NOCLOSE);
39 ret = X509_print_ex(b, x, nmflag, cflag);
45 int X509_print(BIO *bp, X509 *x)
47 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
50 int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
55 char *m = NULL, mlch = ' ';
57 EVP_PKEY *pkey = NULL;
60 if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
65 if (nmflags == X509_FLAG_COMPAT)
68 if (!(cflag & X509_FLAG_NO_HEADER)) {
69 if (BIO_write(bp, "Certificate:\n", 13) <= 0)
71 if (BIO_write(bp, " Data:\n", 10) <= 0)
74 if (!(cflag & X509_FLAG_NO_VERSION)) {
75 l = X509_get_version(x);
76 if (l >= 0 && l <= 2) {
77 if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", "", l + 1, (unsigned long)l) <= 0)
80 if (BIO_printf(bp, "%8sVersion: Unknown (%ld)\n", "", l) <= 0)
84 if (!(cflag & X509_FLAG_NO_SERIAL)) {
85 const ASN1_INTEGER *bs = X509_get0_serialNumber(x);
87 if (BIO_write(bp, " Serial Number:", 22) <= 0)
90 if (bs->length <= (int)sizeof(long)) {
92 l = ASN1_INTEGER_get(bs);
99 if (bs->type == V_ASN1_NEG_INTEGER) {
100 ul = 0 - (unsigned long)l;
106 if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, ul, neg, ul) <= 0)
109 neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
110 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
113 for (i = 0; i < bs->length; i++) {
114 if (BIO_printf(bp, "%02x%c", bs->data[i],
115 ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
122 if (!(cflag & X509_FLAG_NO_SIGNAME)) {
123 const X509_ALGOR *tsig_alg = X509_get0_tbs_sigalg(x);
125 if (BIO_puts(bp, " ") <= 0)
127 if (X509_signature_print(bp, tsig_alg, NULL) <= 0)
131 if (!(cflag & X509_FLAG_NO_ISSUER)) {
132 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0)
134 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
137 if (BIO_write(bp, "\n", 1) <= 0)
140 if (!(cflag & X509_FLAG_NO_VALIDITY)) {
141 if (BIO_write(bp, " Validity\n", 17) <= 0)
143 if (BIO_write(bp, " Not Before: ", 24) <= 0)
145 if (!ASN1_TIME_print(bp, X509_get0_notBefore(x)))
147 if (BIO_write(bp, "\n Not After : ", 25) <= 0)
149 if (!ASN1_TIME_print(bp, X509_get0_notAfter(x)))
151 if (BIO_write(bp, "\n", 1) <= 0)
154 if (!(cflag & X509_FLAG_NO_SUBJECT)) {
155 if (BIO_printf(bp, " Subject:%c", mlch) <= 0)
157 if (X509_NAME_print_ex
158 (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
160 if (BIO_write(bp, "\n", 1) <= 0)
163 if (!(cflag & X509_FLAG_NO_PUBKEY)) {
164 X509_PUBKEY *xpkey = X509_get_X509_PUBKEY(x);
166 X509_PUBKEY_get0_param(&xpoid, NULL, NULL, NULL, xpkey);
167 if (BIO_write(bp, " Subject Public Key Info:\n", 33) <= 0)
169 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
171 if (i2a_ASN1_OBJECT(bp, xpoid) <= 0)
173 if (BIO_puts(bp, "\n") <= 0)
176 pkey = X509_get0_pubkey(x);
178 BIO_printf(bp, "%12sUnable to load Public Key\n", "");
179 ERR_print_errors(bp);
181 EVP_PKEY_print_public(bp, pkey, 16, NULL);
185 if (!(cflag & X509_FLAG_NO_IDS)) {
186 const ASN1_BIT_STRING *iuid, *suid;
187 X509_get0_uids(x, &iuid, &suid);
189 if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
191 if (!X509_signature_dump(bp, iuid, 12))
195 if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
197 if (!X509_signature_dump(bp, suid, 12))
202 if (!(cflag & X509_FLAG_NO_EXTENSIONS)
203 && !X509V3_extensions_print(bp, "X509v3 extensions",
204 X509_get0_extensions(x), cflag, 8))
207 if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
208 const X509_ALGOR *sig_alg;
209 const ASN1_BIT_STRING *sig;
210 X509_get0_signature(&sig, &sig_alg, x);
211 if (X509_signature_print(bp, sig_alg, sig) <= 0)
214 if (!(cflag & X509_FLAG_NO_AUX)) {
215 if (!X509_aux_print(bp, x, 0))
224 int X509_ocspid_print(BIO *bp, X509 *x)
226 unsigned char *der = NULL;
227 unsigned char *dertmp;
230 unsigned char SHA1md[SHA_DIGEST_LENGTH];
231 ASN1_BIT_STRING *keybstr;
232 const X509_NAME *subj;
235 * display the hash of the subject as it would appear in OCSP requests
237 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0)
239 subj = X509_get_subject_name(x);
240 derlen = i2d_X509_NAME(subj, NULL);
241 if ((der = dertmp = OPENSSL_malloc(derlen)) == NULL)
243 i2d_X509_NAME(subj, &dertmp);
245 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
247 for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
248 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
255 * display the hash of the public key as it would appear in OCSP requests
257 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0)
260 keybstr = X509_get0_pubkey_bitstr(x);
265 if (!EVP_Digest(ASN1_STRING_get0_data(keybstr),
266 ASN1_STRING_length(keybstr), SHA1md, NULL, EVP_sha1(),
269 for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
270 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
273 BIO_printf(bp, "\n");
281 int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
283 const unsigned char *s;
288 for (i = 0; i < n; i++) {
290 if (i > 0 && BIO_write(bp, "\n", 1) <= 0)
292 if (BIO_indent(bp, indent, indent) <= 0)
295 if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
298 if (BIO_write(bp, "\n", 1) != 1)
304 int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg,
305 const ASN1_STRING *sig)
309 if (BIO_printf(bp, "%*sSignature Algorithm: ", indent, "") <= 0)
311 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
314 if (sig && BIO_printf(bp, "\n%*sSignature Value:", indent, "") <= 0)
316 sig_nid = OBJ_obj2nid(sigalg->algorithm);
317 if (sig_nid != NID_undef) {
318 int pkey_nid, dig_nid;
319 const EVP_PKEY_ASN1_METHOD *ameth;
320 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
321 ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
322 if (ameth && ameth->sig_print)
323 return ameth->sig_print(bp, sigalg, sig, indent + 4, 0);
326 if (BIO_write(bp, "\n", 1) != 1)
329 return X509_signature_dump(bp, sig, indent + 4);
333 int X509_aux_print(BIO *out, X509 *x, int indent)
335 char oidstr[80], first;
336 STACK_OF(ASN1_OBJECT) *trust, *reject;
337 const unsigned char *alias, *keyid;
340 if (X509_trusted(x) == 0)
342 trust = X509_get0_trust_objects(x);
343 reject = X509_get0_reject_objects(x);
346 BIO_printf(out, "%*sTrusted Uses:\n%*s", indent, "", indent + 2, "");
347 for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
352 OBJ_obj2txt(oidstr, sizeof(oidstr),
353 sk_ASN1_OBJECT_value(trust, i), 0);
354 BIO_puts(out, oidstr);
358 BIO_printf(out, "%*sNo Trusted Uses.\n", indent, "");
361 BIO_printf(out, "%*sRejected Uses:\n%*s", indent, "", indent + 2, "");
362 for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
367 OBJ_obj2txt(oidstr, sizeof(oidstr),
368 sk_ASN1_OBJECT_value(reject, i), 0);
369 BIO_puts(out, oidstr);
373 BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
374 alias = X509_alias_get0(x, NULL);
376 BIO_printf(out, "%*sAlias: %s\n", indent, "", alias);
377 keyid = X509_keyid_get0(x, &keyidlen);
379 BIO_printf(out, "%*sKey Id: ", indent, "");
380 for (i = 0; i < keyidlen; i++)
381 BIO_printf(out, "%s%02X", i ? ":" : "", keyid[i]);
382 BIO_write(out, "\n", 1);
388 * Helper functions for improving certificate verification error diagnostics
391 int x509_print_ex_brief(BIO *bio, X509 *cert, unsigned long neg_cflags)
393 unsigned long flags = ASN1_STRFLGS_RFC2253 | ASN1_STRFLGS_ESC_QUOTE |
394 XN_FLAG_SEP_CPLUS_SPC | XN_FLAG_FN_SN;
397 return BIO_printf(bio, " (no certificate)\n") > 0;
398 if (BIO_printf(bio, " certificate\n") <= 0
399 || !X509_print_ex(bio, cert, flags, ~X509_FLAG_NO_SUBJECT))
401 if (X509_check_issued((X509 *)cert, cert) == X509_V_OK) {
402 if (BIO_printf(bio, " self-issued\n") <= 0)
405 if (BIO_printf(bio, " ") <= 0
406 || !X509_print_ex(bio, cert, flags, ~X509_FLAG_NO_ISSUER))
409 if (!X509_print_ex(bio, cert, flags,
410 ~(X509_FLAG_NO_SERIAL | X509_FLAG_NO_VALIDITY)))
412 if (X509_cmp_current_time(X509_get0_notBefore(cert)) > 0)
413 if (BIO_printf(bio, " not yet valid\n") <= 0)
415 if (X509_cmp_current_time(X509_get0_notAfter(cert)) < 0)
416 if (BIO_printf(bio, " no more valid\n") <= 0)
418 return X509_print_ex(bio, cert, flags,
419 ~neg_cflags & ~X509_FLAG_EXTENSIONS_ONLY_KID);
422 static int print_certs(BIO *bio, const STACK_OF(X509) *certs)
426 if (certs == NULL || sk_X509_num(certs) <= 0)
427 return BIO_printf(bio, " (no certificates)\n") >= 0;
429 for (i = 0; i < sk_X509_num(certs); i++) {
430 X509 *cert = sk_X509_value(certs, i);
433 if (!x509_print_ex_brief(bio, cert, 0))
435 if (!X509V3_extensions_print(bio, NULL,
436 X509_get0_extensions(cert),
437 X509_FLAG_EXTENSIONS_ONLY_KID, 8))
444 static int print_store_certs(BIO *bio, X509_STORE *store)
447 STACK_OF(X509) *certs = X509_STORE_get1_all_certs(store);
448 int ret = print_certs(bio, certs);
450 sk_X509_pop_free(certs, X509_free);
453 return BIO_printf(bio, " (no trusted store)\n") >= 0;
457 /* Extend the error queue with details on a failed cert verification */
458 int X509_STORE_CTX_print_verify_cb(int ok, X509_STORE_CTX *ctx)
460 if (ok == 0 && ctx != NULL) {
461 int cert_error = X509_STORE_CTX_get_error(ctx);
462 BIO *bio = BIO_new(BIO_s_mem()); /* may be NULL */
464 BIO_printf(bio, "%s at depth = %d error = %d (%s)\n",
465 X509_STORE_CTX_get0_parent_ctx(ctx) != NULL
466 ? "CRL path validation"
467 : "Certificate verification",
468 X509_STORE_CTX_get_error_depth(ctx),
469 cert_error, X509_verify_cert_error_string(cert_error));
471 X509_STORE *ts = X509_STORE_CTX_get0_store(ctx);
472 X509_VERIFY_PARAM *vpm = X509_STORE_get0_param(ts);
476 switch (cert_error) {
477 case X509_V_ERR_HOSTNAME_MISMATCH:
478 BIO_printf(bio, "Expected hostname(s) = ");
479 while ((str = X509_VERIFY_PARAM_get0_host(vpm, idx++)) != NULL)
480 BIO_printf(bio, "%s%s", idx == 1 ? "" : ", ", str);
481 BIO_printf(bio, "\n");
483 case X509_V_ERR_EMAIL_MISMATCH:
484 str = X509_VERIFY_PARAM_get0_email(vpm);
486 BIO_printf(bio, "Expected email address = %s\n", str);
488 case X509_V_ERR_IP_ADDRESS_MISMATCH:
489 str = X509_VERIFY_PARAM_get1_ip_asc(vpm);
491 BIO_printf(bio, "Expected IP address = %s\n", str);
499 BIO_printf(bio, "Failure for:\n");
500 x509_print_ex_brief(bio, X509_STORE_CTX_get_current_cert(ctx),
501 X509_FLAG_NO_EXTENSIONS);
502 if (cert_error == X509_V_ERR_CERT_UNTRUSTED
503 || cert_error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
504 || cert_error == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
505 || cert_error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
506 || cert_error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
507 || cert_error == X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER
508 || cert_error == X509_V_ERR_STORE_LOOKUP) {
509 BIO_printf(bio, "Non-trusted certs:\n");
510 print_certs(bio, X509_STORE_CTX_get0_untrusted(ctx));
511 BIO_printf(bio, "Certs in trust store:\n");
512 print_store_certs(bio, X509_STORE_CTX_get0_store(ctx));
514 X509err(0, X509_R_CERTIFICATE_VERIFICATION_FAILED);
515 ERR_add_error_mem_bio("\n", bio);
520 * TODO we could check policies here too, e.g.:
521 * if (cert_error == X509_V_OK && ok == 2)
522 * policies_print(NULL, ctx);