| /* |
| * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (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 <stdio.h> |
| #include "internal/cryptlib.h" |
| #include <openssl/buffer.h> |
| #include <openssl/bn.h> |
| #include <openssl/objects.h> |
| #include <openssl/x509.h> |
| #include <openssl/x509v3.h> |
| #include "crypto/asn1.h" |
| #include "crypto/x509.h" |
| |
| void OSSL_STACK_OF_X509_free(STACK_OF(X509) *certs) |
| { |
| sk_X509_pop_free(certs, X509_free); |
| } |
| |
| #ifndef OPENSSL_NO_STDIO |
| int X509_print_fp(FILE *fp, X509 *x) |
| { |
| return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); |
| } |
| |
| int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag, |
| unsigned long cflag) |
| { |
| BIO *b; |
| int ret; |
| |
| if ((b = BIO_new(BIO_s_file())) == NULL) { |
| ERR_raise(ERR_LIB_X509, ERR_R_BUF_LIB); |
| return 0; |
| } |
| BIO_set_fp(b, fp, BIO_NOCLOSE); |
| ret = X509_print_ex(b, x, nmflag, cflag); |
| BIO_free(b); |
| return ret; |
| } |
| #endif |
| |
| int X509_print(BIO *bp, X509 *x) |
| { |
| return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); |
| } |
| |
| int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags, |
| unsigned long cflag) |
| { |
| long l; |
| int ret = 0, i; |
| char mlch = ' '; |
| int nmindent = 0, printok = 0; |
| EVP_PKEY *pkey = NULL; |
| const char *neg; |
| |
| if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) { |
| mlch = '\n'; |
| nmindent = 12; |
| } |
| |
| if (nmflags == X509_FLAG_COMPAT) { |
| nmindent = 16; |
| printok = 1; |
| } |
| |
| if (!(cflag & X509_FLAG_NO_HEADER)) { |
| if (BIO_write(bp, "Certificate:\n", 13) <= 0) |
| goto err; |
| if (BIO_write(bp, " Data:\n", 10) <= 0) |
| goto err; |
| } |
| if (!(cflag & X509_FLAG_NO_VERSION)) { |
| l = X509_get_version(x); |
| if (l >= X509_VERSION_1 && l <= X509_VERSION_3) { |
| if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", "", l + 1, (unsigned long)l) <= 0) |
| goto err; |
| } else { |
| if (BIO_printf(bp, "%8sVersion: Unknown (%ld)\n", "", l) <= 0) |
| goto err; |
| } |
| } |
| if (!(cflag & X509_FLAG_NO_SERIAL)) { |
| const ASN1_INTEGER *bs = X509_get0_serialNumber(x); |
| |
| if (BIO_write(bp, " Serial Number:", 22) <= 0) |
| goto err; |
| |
| if (bs->length <= (int)sizeof(long)) { |
| ERR_set_mark(); |
| l = ASN1_INTEGER_get(bs); |
| ERR_pop_to_mark(); |
| } else { |
| l = -1; |
| } |
| if (l != -1) { |
| unsigned long ul; |
| if (bs->type == V_ASN1_NEG_INTEGER) { |
| ul = 0 - (unsigned long)l; |
| neg = "-"; |
| } else { |
| ul = l; |
| neg = ""; |
| } |
| if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, ul, neg, ul) <= 0) |
| goto err; |
| } else { |
| neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : ""; |
| if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0) |
| goto err; |
| |
| for (i = 0; i < bs->length; i++) { |
| if (BIO_printf(bp, "%02x%c", bs->data[i], |
| ((i + 1 == bs->length) ? '\n' : ':')) <= 0) |
| goto err; |
| } |
| } |
| |
| } |
| |
| if (!(cflag & X509_FLAG_NO_SIGNAME)) { |
| const X509_ALGOR *tsig_alg = X509_get0_tbs_sigalg(x); |
| |
| if (BIO_puts(bp, " ") <= 0) |
| goto err; |
| if (X509_signature_print(bp, tsig_alg, NULL) <= 0) |
| goto err; |
| } |
| |
| if (!(cflag & X509_FLAG_NO_ISSUER)) { |
| if (BIO_printf(bp, " Issuer:%c", mlch) <= 0) |
| goto err; |
| if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags) |
| < printok) |
| goto err; |
| if (BIO_write(bp, "\n", 1) <= 0) |
| goto err; |
| } |
| if (!(cflag & X509_FLAG_NO_VALIDITY)) { |
| if (BIO_write(bp, " Validity\n", 17) <= 0) |
| goto err; |
| if (BIO_write(bp, " Not Before: ", 24) <= 0) |
| goto err; |
| if (ossl_asn1_time_print_ex(bp, X509_get0_notBefore(x), ASN1_DTFLGS_RFC822) == 0) |
| goto err; |
| if (BIO_write(bp, "\n Not After : ", 25) <= 0) |
| goto err; |
| if (ossl_asn1_time_print_ex(bp, X509_get0_notAfter(x), ASN1_DTFLGS_RFC822) == 0) |
| goto err; |
| if (BIO_write(bp, "\n", 1) <= 0) |
| goto err; |
| } |
| if (!(cflag & X509_FLAG_NO_SUBJECT)) { |
| if (BIO_printf(bp, " Subject:%c", mlch) <= 0) |
| goto err; |
| if (X509_NAME_print_ex |
| (bp, X509_get_subject_name(x), nmindent, nmflags) < printok) |
| goto err; |
| if (BIO_write(bp, "\n", 1) <= 0) |
| goto err; |
| } |
| if (!(cflag & X509_FLAG_NO_PUBKEY)) { |
| X509_PUBKEY *xpkey = X509_get_X509_PUBKEY(x); |
| ASN1_OBJECT *xpoid; |
| X509_PUBKEY_get0_param(&xpoid, NULL, NULL, NULL, xpkey); |
| if (BIO_write(bp, " Subject Public Key Info:\n", 33) <= 0) |
| goto err; |
| if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0) |
| goto err; |
| if (i2a_ASN1_OBJECT(bp, xpoid) <= 0) |
| goto err; |
| if (BIO_puts(bp, "\n") <= 0) |
| goto err; |
| |
| pkey = X509_get0_pubkey(x); |
| if (pkey == NULL) { |
| BIO_printf(bp, "%12sUnable to load Public Key\n", ""); |
| ERR_print_errors(bp); |
| } else { |
| EVP_PKEY_print_public(bp, pkey, 16, NULL); |
| } |
| } |
| |
| if (!(cflag & X509_FLAG_NO_IDS)) { |
| const ASN1_BIT_STRING *iuid, *suid; |
| X509_get0_uids(x, &iuid, &suid); |
| if (iuid != NULL) { |
| if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0) |
| goto err; |
| if (!X509_signature_dump(bp, iuid, 12)) |
| goto err; |
| } |
| if (suid != NULL) { |
| if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0) |
| goto err; |
| if (!X509_signature_dump(bp, suid, 12)) |
| goto err; |
| } |
| } |
| |
| if (!(cflag & X509_FLAG_NO_EXTENSIONS) |
| && !X509V3_extensions_print(bp, "X509v3 extensions", |
| X509_get0_extensions(x), cflag, 8)) |
| goto err; |
| |
| if (!(cflag & X509_FLAG_NO_SIGDUMP)) { |
| const X509_ALGOR *sig_alg; |
| const ASN1_BIT_STRING *sig; |
| X509_get0_signature(&sig, &sig_alg, x); |
| if (X509_signature_print(bp, sig_alg, sig) <= 0) |
| goto err; |
| } |
| if (!(cflag & X509_FLAG_NO_AUX)) { |
| if (!X509_aux_print(bp, x, 0)) |
| goto err; |
| } |
| ret = 1; |
| err: |
| return ret; |
| } |
| |
| int X509_ocspid_print(BIO *bp, X509 *x) |
| { |
| unsigned char *der = NULL; |
| unsigned char *dertmp; |
| int derlen; |
| int i; |
| unsigned char SHA1md[SHA_DIGEST_LENGTH]; |
| ASN1_BIT_STRING *keybstr; |
| const X509_NAME *subj; |
| EVP_MD *md = NULL; |
| |
| if (x == NULL || bp == NULL) |
| return 0; |
| /* |
| * display the hash of the subject as it would appear in OCSP requests |
| */ |
| if (BIO_printf(bp, " Subject OCSP hash: ") <= 0) |
| goto err; |
| subj = X509_get_subject_name(x); |
| derlen = i2d_X509_NAME(subj, NULL); |
| if (derlen <= 0) |
| goto err; |
| if ((der = dertmp = OPENSSL_malloc(derlen)) == NULL) |
| goto err; |
| i2d_X509_NAME(subj, &dertmp); |
| |
| md = EVP_MD_fetch(x->libctx, SN_sha1, x->propq); |
| if (md == NULL) |
| goto err; |
| if (!EVP_Digest(der, derlen, SHA1md, NULL, md, NULL)) |
| goto err; |
| for (i = 0; i < SHA_DIGEST_LENGTH; i++) { |
| if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) |
| goto err; |
| } |
| OPENSSL_free(der); |
| der = NULL; |
| |
| /* |
| * display the hash of the public key as it would appear in OCSP requests |
| */ |
| if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0) |
| goto err; |
| |
| keybstr = X509_get0_pubkey_bitstr(x); |
| |
| if (keybstr == NULL) |
| goto err; |
| |
| if (!EVP_Digest(ASN1_STRING_get0_data(keybstr), |
| ASN1_STRING_length(keybstr), SHA1md, NULL, md, NULL)) |
| goto err; |
| for (i = 0; i < SHA_DIGEST_LENGTH; i++) { |
| if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) |
| goto err; |
| } |
| BIO_printf(bp, "\n"); |
| EVP_MD_free(md); |
| |
| return 1; |
| err: |
| OPENSSL_free(der); |
| EVP_MD_free(md); |
| return 0; |
| } |
| |
| int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) |
| { |
| const unsigned char *s; |
| int i, n; |
| |
| n = sig->length; |
| s = sig->data; |
| for (i = 0; i < n; i++) { |
| if ((i % 18) == 0) { |
| if (i > 0 && BIO_write(bp, "\n", 1) <= 0) |
| return 0; |
| if (BIO_indent(bp, indent, indent) <= 0) |
| return 0; |
| } |
| if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0) |
| return 0; |
| } |
| if (BIO_write(bp, "\n", 1) != 1) |
| return 0; |
| |
| return 1; |
| } |
| |
| int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, |
| const ASN1_STRING *sig) |
| { |
| int sig_nid; |
| int indent = 4; |
| if (BIO_printf(bp, "%*sSignature Algorithm: ", indent, "") <= 0) |
| return 0; |
| if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) |
| return 0; |
| |
| if (sig && BIO_printf(bp, "\n%*sSignature Value:", indent, "") <= 0) |
| return 0; |
| sig_nid = OBJ_obj2nid(sigalg->algorithm); |
| if (sig_nid != NID_undef) { |
| int pkey_nid, dig_nid; |
| const EVP_PKEY_ASN1_METHOD *ameth; |
| if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) { |
| ameth = EVP_PKEY_asn1_find(NULL, pkey_nid); |
| if (ameth && ameth->sig_print) |
| return ameth->sig_print(bp, sigalg, sig, indent + 4, 0); |
| } |
| } |
| if (BIO_write(bp, "\n", 1) != 1) |
| return 0; |
| if (sig) |
| return X509_signature_dump(bp, sig, indent + 4); |
| return 1; |
| } |
| |
| int X509_aux_print(BIO *out, X509 *x, int indent) |
| { |
| char oidstr[80], first; |
| STACK_OF(ASN1_OBJECT) *trust, *reject; |
| const unsigned char *alias, *keyid; |
| int keyidlen; |
| int i; |
| if (X509_trusted(x) == 0) |
| return 1; |
| trust = X509_get0_trust_objects(x); |
| reject = X509_get0_reject_objects(x); |
| if (trust) { |
| first = 1; |
| BIO_printf(out, "%*sTrusted Uses:\n%*s", indent, "", indent + 2, ""); |
| for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) { |
| if (!first) |
| BIO_puts(out, ", "); |
| else |
| first = 0; |
| OBJ_obj2txt(oidstr, sizeof(oidstr), |
| sk_ASN1_OBJECT_value(trust, i), 0); |
| BIO_puts(out, oidstr); |
| } |
| BIO_puts(out, "\n"); |
| } else |
| BIO_printf(out, "%*sNo Trusted Uses.\n", indent, ""); |
| if (reject) { |
| first = 1; |
| BIO_printf(out, "%*sRejected Uses:\n%*s", indent, "", indent + 2, ""); |
| for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) { |
| if (!first) |
| BIO_puts(out, ", "); |
| else |
| first = 0; |
| OBJ_obj2txt(oidstr, sizeof(oidstr), |
| sk_ASN1_OBJECT_value(reject, i), 0); |
| BIO_puts(out, oidstr); |
| } |
| BIO_puts(out, "\n"); |
| } else |
| BIO_printf(out, "%*sNo Rejected Uses.\n", indent, ""); |
| alias = X509_alias_get0(x, &i); |
| if (alias) |
| BIO_printf(out, "%*sAlias: %.*s\n", indent, "", i, alias); |
| keyid = X509_keyid_get0(x, &keyidlen); |
| if (keyid) { |
| BIO_printf(out, "%*sKey Id: ", indent, ""); |
| for (i = 0; i < keyidlen; i++) |
| BIO_printf(out, "%s%02X", i ? ":" : "", keyid[i]); |
| BIO_write(out, "\n", 1); |
| } |
| return 1; |
| } |
| |
| /* |
| * Helper functions for improving certificate verification error diagnostics |
| */ |
| |
| int ossl_x509_print_ex_brief(BIO *bio, X509 *cert, unsigned long neg_cflags) |
| { |
| unsigned long flags = ASN1_STRFLGS_RFC2253 | ASN1_STRFLGS_ESC_QUOTE | |
| XN_FLAG_SEP_CPLUS_SPC | XN_FLAG_FN_SN; |
| |
| if (cert == NULL) |
| return BIO_printf(bio, " (no certificate)\n") > 0; |
| if (BIO_printf(bio, " certificate\n") <= 0 |
| || !X509_print_ex(bio, cert, flags, ~X509_FLAG_NO_SUBJECT)) |
| return 0; |
| if (X509_check_issued((X509 *)cert, cert) == X509_V_OK) { |
| if (BIO_printf(bio, " self-issued\n") <= 0) |
| return 0; |
| } else { |
| if (BIO_printf(bio, " ") <= 0 |
| || !X509_print_ex(bio, cert, flags, ~X509_FLAG_NO_ISSUER)) |
| return 0; |
| } |
| if (!X509_print_ex(bio, cert, flags, |
| ~(X509_FLAG_NO_SERIAL | X509_FLAG_NO_VALIDITY))) |
| return 0; |
| if (X509_cmp_current_time(X509_get0_notBefore(cert)) > 0) |
| if (BIO_printf(bio, " not yet valid\n") <= 0) |
| return 0; |
| if (X509_cmp_current_time(X509_get0_notAfter(cert)) < 0) |
| if (BIO_printf(bio, " no more valid\n") <= 0) |
| return 0; |
| return X509_print_ex(bio, cert, flags, |
| ~neg_cflags & ~X509_FLAG_EXTENSIONS_ONLY_KID); |
| } |
| |
| static int print_certs(BIO *bio, const STACK_OF(X509) *certs) |
| { |
| int i; |
| |
| if (certs == NULL || sk_X509_num(certs) <= 0) |
| return BIO_printf(bio, " (no certificates)\n") >= 0; |
| |
| for (i = 0; i < sk_X509_num(certs); i++) { |
| X509 *cert = sk_X509_value(certs, i); |
| |
| if (cert != NULL) { |
| if (!ossl_x509_print_ex_brief(bio, cert, 0)) |
| return 0; |
| if (!X509V3_extensions_print(bio, NULL, |
| X509_get0_extensions(cert), |
| X509_FLAG_EXTENSIONS_ONLY_KID, 8)) |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| static int print_store_certs(BIO *bio, X509_STORE *store) |
| { |
| if (store != NULL) { |
| STACK_OF(X509) *certs = X509_STORE_get1_all_certs(store); |
| int ret = print_certs(bio, certs); |
| |
| OSSL_STACK_OF_X509_free(certs); |
| return ret; |
| } else { |
| return BIO_printf(bio, " (no trusted store)\n") >= 0; |
| } |
| } |
| |
| /* Extend the error queue with details on a failed cert verification */ |
| int X509_STORE_CTX_print_verify_cb(int ok, X509_STORE_CTX *ctx) |
| { |
| if (ok == 0 && ctx != NULL) { |
| int cert_error = X509_STORE_CTX_get_error(ctx); |
| BIO *bio = BIO_new(BIO_s_mem()); /* may be NULL */ |
| |
| if (bio == NULL) |
| return 0; |
| BIO_printf(bio, "%s at depth = %d error = %d (%s)\n", |
| X509_STORE_CTX_get0_parent_ctx(ctx) != NULL |
| ? "CRL path validation" |
| : "Certificate verification", |
| X509_STORE_CTX_get_error_depth(ctx), |
| cert_error, X509_verify_cert_error_string(cert_error)); |
| { |
| X509_STORE *ts = X509_STORE_CTX_get0_store(ctx); |
| X509_VERIFY_PARAM *vpm = X509_STORE_get0_param(ts); |
| char *str; |
| int idx = 0; |
| |
| switch (cert_error) { |
| case X509_V_ERR_HOSTNAME_MISMATCH: |
| BIO_printf(bio, "Expected hostname(s) = "); |
| while ((str = X509_VERIFY_PARAM_get0_host(vpm, idx++)) != NULL) |
| BIO_printf(bio, "%s%s", idx == 1 ? "" : ", ", str); |
| BIO_printf(bio, "\n"); |
| break; |
| case X509_V_ERR_EMAIL_MISMATCH: |
| str = X509_VERIFY_PARAM_get0_email(vpm); |
| if (str != NULL) |
| BIO_printf(bio, "Expected email address = %s\n", str); |
| break; |
| case X509_V_ERR_IP_ADDRESS_MISMATCH: |
| str = X509_VERIFY_PARAM_get1_ip_asc(vpm); |
| if (str != NULL) |
| BIO_printf(bio, "Expected IP address = %s\n", str); |
| OPENSSL_free(str); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| BIO_printf(bio, "Failure for:\n"); |
| ossl_x509_print_ex_brief(bio, X509_STORE_CTX_get_current_cert(ctx), |
| X509_FLAG_NO_EXTENSIONS); |
| if (cert_error == X509_V_ERR_CERT_UNTRUSTED |
| || cert_error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT |
| || cert_error == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN |
| || cert_error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT |
| || cert_error == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY |
| || cert_error == X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER |
| || cert_error == X509_V_ERR_STORE_LOOKUP) { |
| BIO_printf(bio, "Non-trusted certs:\n"); |
| print_certs(bio, X509_STORE_CTX_get0_untrusted(ctx)); |
| BIO_printf(bio, "Certs in trust store:\n"); |
| print_store_certs(bio, X509_STORE_CTX_get0_store(ctx)); |
| } |
| ERR_raise(ERR_LIB_X509, X509_R_CERTIFICATE_VERIFICATION_FAILED); |
| ERR_add_error_mem_bio("\n", bio); |
| BIO_free(bio); |
| } |
| |
| return ok; |
| } |
