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588 lines
16 KiB
C
588 lines
16 KiB
C
/*
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* Copyright 2008-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/asn1t.h>
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#include <openssl/x509v3.h>
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#include <openssl/err.h>
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#include <openssl/pem.h>
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#include <openssl/bio.h>
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#include <openssl/asn1.h>
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#include <openssl/cms.h>
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#include "cms_local.h"
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IMPLEMENT_ASN1_FUNCTIONS(CMS_ContentInfo)
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IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)
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const ASN1_OBJECT *CMS_get0_type(const CMS_ContentInfo *cms)
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{
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return cms->contentType;
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}
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CMS_ContentInfo *cms_Data_create(void)
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{
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CMS_ContentInfo *cms;
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cms = CMS_ContentInfo_new();
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if (cms != NULL) {
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cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
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/* Never detached */
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CMS_set_detached(cms, 0);
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}
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return cms;
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}
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BIO *cms_content_bio(CMS_ContentInfo *cms)
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{
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ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
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if (!pos)
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return NULL;
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/* If content detached data goes nowhere: create NULL BIO */
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if (!*pos)
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return BIO_new(BIO_s_null());
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/*
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* If content not detached and created return memory BIO
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*/
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if (!*pos || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
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return BIO_new(BIO_s_mem());
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/* Else content was read in: return read only BIO for it */
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return BIO_new_mem_buf((*pos)->data, (*pos)->length);
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}
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BIO *CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
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{
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BIO *cmsbio, *cont;
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if (icont)
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cont = icont;
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else
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cont = cms_content_bio(cms);
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if (!cont) {
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CMSerr(CMS_F_CMS_DATAINIT, CMS_R_NO_CONTENT);
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return NULL;
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}
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switch (OBJ_obj2nid(cms->contentType)) {
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case NID_pkcs7_data:
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return cont;
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case NID_pkcs7_signed:
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cmsbio = cms_SignedData_init_bio(cms);
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break;
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case NID_pkcs7_digest:
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cmsbio = cms_DigestedData_init_bio(cms);
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break;
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#ifdef ZLIB
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case NID_id_smime_ct_compressedData:
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cmsbio = cms_CompressedData_init_bio(cms);
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break;
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#endif
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case NID_pkcs7_encrypted:
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cmsbio = cms_EncryptedData_init_bio(cms);
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break;
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case NID_pkcs7_enveloped:
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cmsbio = cms_EnvelopedData_init_bio(cms);
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break;
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default:
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CMSerr(CMS_F_CMS_DATAINIT, CMS_R_UNSUPPORTED_TYPE);
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goto err;
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}
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if (cmsbio)
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return BIO_push(cmsbio, cont);
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err:
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if (!icont)
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BIO_free(cont);
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return NULL;
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}
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int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
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{
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ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
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if (!pos)
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return 0;
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/* If embedded content find memory BIO and set content */
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if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
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BIO *mbio;
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unsigned char *cont;
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long contlen;
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mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
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if (!mbio) {
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CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
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return 0;
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}
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contlen = BIO_get_mem_data(mbio, &cont);
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/* Set bio as read only so its content can't be clobbered */
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BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
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BIO_set_mem_eof_return(mbio, 0);
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ASN1_STRING_set0(*pos, cont, contlen);
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(*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
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}
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switch (OBJ_obj2nid(cms->contentType)) {
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case NID_pkcs7_data:
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case NID_pkcs7_enveloped:
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case NID_pkcs7_encrypted:
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case NID_id_smime_ct_compressedData:
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/* Nothing to do */
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return 1;
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case NID_pkcs7_signed:
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return cms_SignedData_final(cms, cmsbio);
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case NID_pkcs7_digest:
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return cms_DigestedData_do_final(cms, cmsbio, 0);
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default:
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CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_UNSUPPORTED_TYPE);
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return 0;
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}
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}
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/*
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* Return an OCTET STRING pointer to content. This allows it to be accessed
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* or set later.
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*/
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ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
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{
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switch (OBJ_obj2nid(cms->contentType)) {
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case NID_pkcs7_data:
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return &cms->d.data;
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case NID_pkcs7_signed:
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return &cms->d.signedData->encapContentInfo->eContent;
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case NID_pkcs7_enveloped:
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return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
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case NID_pkcs7_digest:
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return &cms->d.digestedData->encapContentInfo->eContent;
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case NID_pkcs7_encrypted:
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return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
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case NID_id_smime_ct_authData:
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return &cms->d.authenticatedData->encapContentInfo->eContent;
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case NID_id_smime_ct_compressedData:
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return &cms->d.compressedData->encapContentInfo->eContent;
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default:
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if (cms->d.other->type == V_ASN1_OCTET_STRING)
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return &cms->d.other->value.octet_string;
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CMSerr(CMS_F_CMS_GET0_CONTENT, CMS_R_UNSUPPORTED_CONTENT_TYPE);
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return NULL;
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}
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}
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/*
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* Return an ASN1_OBJECT pointer to content type. This allows it to be
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* accessed or set later.
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*/
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static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
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{
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switch (OBJ_obj2nid(cms->contentType)) {
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case NID_pkcs7_signed:
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return &cms->d.signedData->encapContentInfo->eContentType;
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case NID_pkcs7_enveloped:
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return &cms->d.envelopedData->encryptedContentInfo->contentType;
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case NID_pkcs7_digest:
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return &cms->d.digestedData->encapContentInfo->eContentType;
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case NID_pkcs7_encrypted:
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return &cms->d.encryptedData->encryptedContentInfo->contentType;
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case NID_id_smime_ct_authData:
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return &cms->d.authenticatedData->encapContentInfo->eContentType;
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case NID_id_smime_ct_compressedData:
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return &cms->d.compressedData->encapContentInfo->eContentType;
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default:
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CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE, CMS_R_UNSUPPORTED_CONTENT_TYPE);
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return NULL;
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}
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}
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const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
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{
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ASN1_OBJECT **petype;
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petype = cms_get0_econtent_type(cms);
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if (petype)
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return *petype;
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return NULL;
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}
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int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
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{
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ASN1_OBJECT **petype, *etype;
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petype = cms_get0_econtent_type(cms);
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if (!petype)
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return 0;
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if (!oid)
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return 1;
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etype = OBJ_dup(oid);
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if (!etype)
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return 0;
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ASN1_OBJECT_free(*petype);
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*petype = etype;
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return 1;
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}
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int CMS_is_detached(CMS_ContentInfo *cms)
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{
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ASN1_OCTET_STRING **pos;
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pos = CMS_get0_content(cms);
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if (!pos)
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return -1;
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if (*pos)
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return 0;
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return 1;
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}
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int CMS_set_detached(CMS_ContentInfo *cms, int detached)
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{
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ASN1_OCTET_STRING **pos;
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pos = CMS_get0_content(cms);
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if (!pos)
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return 0;
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if (detached) {
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ASN1_OCTET_STRING_free(*pos);
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*pos = NULL;
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return 1;
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}
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if (*pos == NULL)
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*pos = ASN1_OCTET_STRING_new();
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if (*pos != NULL) {
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/*
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* NB: special flag to show content is created and not read in.
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*/
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(*pos)->flags |= ASN1_STRING_FLAG_CONT;
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return 1;
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}
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CMSerr(CMS_F_CMS_SET_DETACHED, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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/* Create a digest BIO from an X509_ALGOR structure */
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BIO *cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
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{
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BIO *mdbio = NULL;
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const ASN1_OBJECT *digestoid;
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const EVP_MD *digest;
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X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
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digest = EVP_get_digestbyobj(digestoid);
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if (!digest) {
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CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
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CMS_R_UNKNOWN_DIGEST_ALGORITHM);
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goto err;
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}
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mdbio = BIO_new(BIO_f_md());
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if (mdbio == NULL || !BIO_set_md(mdbio, digest)) {
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CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO, CMS_R_MD_BIO_INIT_ERROR);
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goto err;
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}
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return mdbio;
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err:
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BIO_free(mdbio);
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return NULL;
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}
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/* Locate a message digest content from a BIO chain based on SignerInfo */
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int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
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X509_ALGOR *mdalg)
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{
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int nid;
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const ASN1_OBJECT *mdoid;
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X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
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nid = OBJ_obj2nid(mdoid);
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/* Look for digest type to match signature */
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for (;;) {
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EVP_MD_CTX *mtmp;
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chain = BIO_find_type(chain, BIO_TYPE_MD);
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if (chain == NULL) {
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CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX,
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CMS_R_NO_MATCHING_DIGEST);
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return 0;
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}
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BIO_get_md_ctx(chain, &mtmp);
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if (EVP_MD_CTX_type(mtmp) == nid
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/*
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* Workaround for broken implementations that use signature
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* algorithm OID instead of digest.
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*/
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|| EVP_MD_pkey_type(EVP_MD_CTX_md(mtmp)) == nid)
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return EVP_MD_CTX_copy_ex(mctx, mtmp);
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chain = BIO_next(chain);
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}
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}
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static STACK_OF(CMS_CertificateChoices)
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**cms_get0_certificate_choices(CMS_ContentInfo *cms)
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{
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switch (OBJ_obj2nid(cms->contentType)) {
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case NID_pkcs7_signed:
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return &cms->d.signedData->certificates;
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case NID_pkcs7_enveloped:
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if (cms->d.envelopedData->originatorInfo == NULL)
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return NULL;
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return &cms->d.envelopedData->originatorInfo->certificates;
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default:
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CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES,
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CMS_R_UNSUPPORTED_CONTENT_TYPE);
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return NULL;
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}
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}
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CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
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{
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STACK_OF(CMS_CertificateChoices) **pcerts;
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CMS_CertificateChoices *cch;
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pcerts = cms_get0_certificate_choices(cms);
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if (!pcerts)
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return NULL;
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if (!*pcerts)
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*pcerts = sk_CMS_CertificateChoices_new_null();
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if (!*pcerts)
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return NULL;
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cch = M_ASN1_new_of(CMS_CertificateChoices);
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if (!cch)
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return NULL;
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if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
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M_ASN1_free_of(cch, CMS_CertificateChoices);
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return NULL;
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}
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return cch;
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}
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int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
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{
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CMS_CertificateChoices *cch;
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STACK_OF(CMS_CertificateChoices) **pcerts;
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int i;
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pcerts = cms_get0_certificate_choices(cms);
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if (!pcerts)
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return 0;
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for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
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cch = sk_CMS_CertificateChoices_value(*pcerts, i);
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if (cch->type == CMS_CERTCHOICE_CERT) {
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if (!X509_cmp(cch->d.certificate, cert)) {
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CMSerr(CMS_F_CMS_ADD0_CERT,
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CMS_R_CERTIFICATE_ALREADY_PRESENT);
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return 0;
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}
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}
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}
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cch = CMS_add0_CertificateChoices(cms);
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if (!cch)
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return 0;
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cch->type = CMS_CERTCHOICE_CERT;
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cch->d.certificate = cert;
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return 1;
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}
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int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
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{
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int r;
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r = CMS_add0_cert(cms, cert);
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if (r > 0)
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X509_up_ref(cert);
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return r;
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}
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static STACK_OF(CMS_RevocationInfoChoice)
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**cms_get0_revocation_choices(CMS_ContentInfo *cms)
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{
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switch (OBJ_obj2nid(cms->contentType)) {
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case NID_pkcs7_signed:
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return &cms->d.signedData->crls;
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case NID_pkcs7_enveloped:
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if (cms->d.envelopedData->originatorInfo == NULL)
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return NULL;
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return &cms->d.envelopedData->originatorInfo->crls;
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default:
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CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES,
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CMS_R_UNSUPPORTED_CONTENT_TYPE);
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return NULL;
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}
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}
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CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
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{
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STACK_OF(CMS_RevocationInfoChoice) **pcrls;
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CMS_RevocationInfoChoice *rch;
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pcrls = cms_get0_revocation_choices(cms);
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if (!pcrls)
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return NULL;
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if (!*pcrls)
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*pcrls = sk_CMS_RevocationInfoChoice_new_null();
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if (!*pcrls)
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return NULL;
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rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
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if (!rch)
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return NULL;
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if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
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M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
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return NULL;
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}
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return rch;
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}
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int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
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{
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CMS_RevocationInfoChoice *rch;
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rch = CMS_add0_RevocationInfoChoice(cms);
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if (!rch)
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return 0;
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rch->type = CMS_REVCHOICE_CRL;
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rch->d.crl = crl;
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return 1;
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}
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int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
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{
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int r;
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r = CMS_add0_crl(cms, crl);
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if (r > 0)
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X509_CRL_up_ref(crl);
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return r;
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}
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STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
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{
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STACK_OF(X509) *certs = NULL;
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CMS_CertificateChoices *cch;
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STACK_OF(CMS_CertificateChoices) **pcerts;
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int i;
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pcerts = cms_get0_certificate_choices(cms);
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if (!pcerts)
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return NULL;
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for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
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cch = sk_CMS_CertificateChoices_value(*pcerts, i);
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if (cch->type == 0) {
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if (!certs) {
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certs = sk_X509_new_null();
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if (!certs)
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return NULL;
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}
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if (!sk_X509_push(certs, cch->d.certificate)) {
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sk_X509_pop_free(certs, X509_free);
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return NULL;
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}
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X509_up_ref(cch->d.certificate);
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}
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}
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return certs;
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}
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STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
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{
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STACK_OF(X509_CRL) *crls = NULL;
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STACK_OF(CMS_RevocationInfoChoice) **pcrls;
|
|
CMS_RevocationInfoChoice *rch;
|
|
int i;
|
|
pcrls = cms_get0_revocation_choices(cms);
|
|
if (!pcrls)
|
|
return NULL;
|
|
for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++) {
|
|
rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
|
|
if (rch->type == 0) {
|
|
if (!crls) {
|
|
crls = sk_X509_CRL_new_null();
|
|
if (!crls)
|
|
return NULL;
|
|
}
|
|
if (!sk_X509_CRL_push(crls, rch->d.crl)) {
|
|
sk_X509_CRL_pop_free(crls, X509_CRL_free);
|
|
return NULL;
|
|
}
|
|
X509_CRL_up_ref(rch->d.crl);
|
|
}
|
|
}
|
|
return crls;
|
|
}
|
|
|
|
int cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
|
|
{
|
|
int ret;
|
|
ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
|
|
if (ret)
|
|
return ret;
|
|
return ASN1_INTEGER_cmp(ias->serialNumber, X509_get_serialNumber(cert));
|
|
}
|
|
|
|
int cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
|
|
{
|
|
const ASN1_OCTET_STRING *cert_keyid = X509_get0_subject_key_id(cert);
|
|
|
|
if (cert_keyid == NULL)
|
|
return -1;
|
|
return ASN1_OCTET_STRING_cmp(keyid, cert_keyid);
|
|
}
|
|
|
|
int cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
|
|
{
|
|
CMS_IssuerAndSerialNumber *ias;
|
|
ias = M_ASN1_new_of(CMS_IssuerAndSerialNumber);
|
|
if (!ias)
|
|
goto err;
|
|
if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert)))
|
|
goto err;
|
|
if (!ASN1_STRING_copy(ias->serialNumber, X509_get_serialNumber(cert)))
|
|
goto err;
|
|
M_ASN1_free_of(*pias, CMS_IssuerAndSerialNumber);
|
|
*pias = ias;
|
|
return 1;
|
|
err:
|
|
M_ASN1_free_of(ias, CMS_IssuerAndSerialNumber);
|
|
CMSerr(CMS_F_CMS_SET1_IAS, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
|
|
int cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
|
|
{
|
|
ASN1_OCTET_STRING *keyid = NULL;
|
|
const ASN1_OCTET_STRING *cert_keyid;
|
|
cert_keyid = X509_get0_subject_key_id(cert);
|
|
if (cert_keyid == NULL) {
|
|
CMSerr(CMS_F_CMS_SET1_KEYID, CMS_R_CERTIFICATE_HAS_NO_KEYID);
|
|
return 0;
|
|
}
|
|
keyid = ASN1_STRING_dup(cert_keyid);
|
|
if (!keyid) {
|
|
CMSerr(CMS_F_CMS_SET1_KEYID, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
ASN1_OCTET_STRING_free(*pkeyid);
|
|
*pkeyid = keyid;
|
|
return 1;
|
|
}
|