| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | * |
| 4 | * Licensed under the OpenSSL license (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 |
| 8 | */ |
| 9 | |
| 10 | #ifdef OPENSSL_NO_CT |
| 11 | # error "CT is disabled" |
| 12 | #endif |
| 13 | |
| 14 | #include "ct_local.h" |
| 15 | |
| 16 | static char *i2s_poison(const X509V3_EXT_METHOD *method, void *val) |
| 17 | { |
| 18 | return OPENSSL_strdup("NULL"); |
| 19 | } |
| 20 | |
| 21 | static void *s2i_poison(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, const char *str) |
| 22 | { |
| 23 | return ASN1_NULL_new(); |
| 24 | } |
| 25 | |
| 26 | static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list, |
| 27 | BIO *out, int indent) |
| 28 | { |
| 29 | SCT_LIST_print(sct_list, out, indent, "\n", NULL); |
| 30 | return 1; |
| 31 | } |
| 32 | |
| 33 | static int set_sct_list_source(STACK_OF(SCT) *s, sct_source_t source) |
| 34 | { |
| 35 | if (s != NULL) { |
| 36 | int i; |
| 37 | |
| 38 | for (i = 0; i < sk_SCT_num(s); i++) { |
| 39 | int res = SCT_set_source(sk_SCT_value(s, i), source); |
| 40 | |
| 41 | if (res != 1) { |
| 42 | return 0; |
| 43 | } |
| 44 | } |
| 45 | } |
| 46 | return 1; |
| 47 | } |
| 48 | |
| 49 | static STACK_OF(SCT) *x509_ext_d2i_SCT_LIST(STACK_OF(SCT) **a, |
| 50 | const unsigned char **pp, |
| 51 | long len) |
| 52 | { |
| 53 | STACK_OF(SCT) *s = d2i_SCT_LIST(a, pp, len); |
| 54 | |
| 55 | if (set_sct_list_source(s, SCT_SOURCE_X509V3_EXTENSION) != 1) { |
| 56 | SCT_LIST_free(s); |
| 57 | *a = NULL; |
| 58 | return NULL; |
| 59 | } |
| 60 | return s; |
| 61 | } |
| 62 | |
| 63 | static STACK_OF(SCT) *ocsp_ext_d2i_SCT_LIST(STACK_OF(SCT) **a, |
| 64 | const unsigned char **pp, |
| 65 | long len) |
| 66 | { |
| 67 | STACK_OF(SCT) *s = d2i_SCT_LIST(a, pp, len); |
| 68 | |
| 69 | if (set_sct_list_source(s, SCT_SOURCE_OCSP_STAPLED_RESPONSE) != 1) { |
| 70 | SCT_LIST_free(s); |
| 71 | *a = NULL; |
| 72 | return NULL; |
| 73 | } |
| 74 | return s; |
| 75 | } |
| 76 | |
| 77 | /* Handlers for X509v3/OCSP Certificate Transparency extensions */ |
| 78 | const X509V3_EXT_METHOD v3_ct_scts[3] = { |
| 79 | /* X509v3 extension in certificates that contains SCTs */ |
| 80 | { NID_ct_precert_scts, 0, NULL, |
| 81 | NULL, (X509V3_EXT_FREE)SCT_LIST_free, |
| 82 | (X509V3_EXT_D2I)x509_ext_d2i_SCT_LIST, (X509V3_EXT_I2D)i2d_SCT_LIST, |
| 83 | NULL, NULL, |
| 84 | NULL, NULL, |
| 85 | (X509V3_EXT_I2R)i2r_SCT_LIST, NULL, |
| 86 | NULL }, |
| 87 | |
| 88 | /* X509v3 extension to mark a certificate as a pre-certificate */ |
| 89 | { NID_ct_precert_poison, 0, ASN1_ITEM_ref(ASN1_NULL), |
| 90 | NULL, NULL, NULL, NULL, |
| 91 | i2s_poison, s2i_poison, |
| 92 | NULL, NULL, |
| 93 | NULL, NULL, |
| 94 | NULL }, |
| 95 | |
| 96 | /* OCSP extension that contains SCTs */ |
| 97 | { NID_ct_cert_scts, 0, NULL, |
| 98 | 0, (X509V3_EXT_FREE)SCT_LIST_free, |
| 99 | (X509V3_EXT_D2I)ocsp_ext_d2i_SCT_LIST, (X509V3_EXT_I2D)i2d_SCT_LIST, |
| 100 | NULL, NULL, |
| 101 | NULL, NULL, |
| 102 | (X509V3_EXT_I2R)i2r_SCT_LIST, NULL, |
| 103 | NULL }, |
| 104 | }; |