- X509_STORE *store, BIO *dcont, BIO *out, unsigned int flags)
- {
- CMS_SignerInfo *si;
- STACK_OF(CMS_SignerInfo) *sinfos;
- STACK_OF(X509) *cms_certs = NULL;
- STACK_OF(X509_CRL) *crls = NULL;
- X509 *signer;
- int i, scount = 0, ret = 0;
- BIO *cmsbio = NULL, *tmpin = NULL;
-
- if (!dcont && !check_content(cms))
- return 0;
-
- /* Attempt to find all signer certificates */
-
- sinfos = CMS_get0_SignerInfos(cms);
-
- if (sk_CMS_SignerInfo_num(sinfos) <= 0)
- {
- CMSerr(CMS_F_CMS_VERIFY, CMS_R_NO_SIGNERS);
- goto err;
- }
-
- for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
- {
- si = sk_CMS_SignerInfo_value(sinfos, i);
- CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL);
- if (signer)
- scount++;
- }
-
- if (scount != sk_CMS_SignerInfo_num(sinfos))
- scount += CMS_set1_signers_certs(cms, certs, flags);
-
- if (scount != sk_CMS_SignerInfo_num(sinfos))
- {
- CMSerr(CMS_F_CMS_VERIFY, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND);
- goto err;
- }
-
- /* Attempt to verify all signers certs */
-
- if (!(flags & CMS_NO_SIGNER_CERT_VERIFY))
- {
- cms_certs = CMS_get1_certs(cms);
- if (!(flags & CMS_NOCRL))
- crls = CMS_get1_crls(cms);
- for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
- {
- si = sk_CMS_SignerInfo_value(sinfos, i);
- if (!cms_signerinfo_verify_cert(si, store,
- cms_certs, crls, flags))
- goto err;
- }
- }
-
- /* Attempt to verify all SignerInfo signed attribute signatures */
-
- if (!(flags & CMS_NO_ATTR_VERIFY))
- {
- for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
- {
- si = sk_CMS_SignerInfo_value(sinfos, i);
- if (CMS_signed_get_attr_count(si) < 0)
- continue;
- if (CMS_SignerInfo_verify(si) <= 0)
- goto err;
- }
- }
-
- /* Performance optimization: if the content is a memory BIO then
- * store its contents in a temporary read only memory BIO. This
- * avoids potentially large numbers of slow copies of data which will
- * occur when reading from a read write memory BIO when signatures
- * are calculated.
- */
-
- if (dcont && (BIO_method_type(dcont) == BIO_TYPE_MEM))
- {
- char *ptr;
- long len;
- len = BIO_get_mem_data(dcont, &ptr);
- tmpin = BIO_new_mem_buf(ptr, len);
- if (tmpin == NULL)
- {
- CMSerr(CMS_F_CMS_VERIFY,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- }
- else
- tmpin = dcont;
-
-
- cmsbio=CMS_dataInit(cms, tmpin);
- if (!cmsbio)
- goto err;
-
- if (!cms_copy_content(out, cmsbio, flags))
- goto err;
-
- if (!(flags & CMS_NO_CONTENT_VERIFY))
- {
- for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
- {
- si = sk_CMS_SignerInfo_value(sinfos, i);
- if (CMS_SignerInfo_verify_content(si, cmsbio) <= 0)
- {
- CMSerr(CMS_F_CMS_VERIFY,
- CMS_R_CONTENT_VERIFY_ERROR);
- goto err;
- }
- }
- }
-
- ret = 1;
-
- err:
-
- if (dcont && (tmpin == dcont))
- do_free_upto(cmsbio, dcont);
- else
- BIO_free_all(cmsbio);
-
- if (cms_certs)
- sk_X509_pop_free(cms_certs, X509_free);
- if (crls)
- sk_X509_CRL_pop_free(crls, X509_CRL_free);
-
- return ret;
- }
+ X509_STORE *store, BIO *dcont, BIO *out, unsigned int flags)
+{
+ CMS_SignerInfo *si;
+ STACK_OF(CMS_SignerInfo) *sinfos;
+ STACK_OF(X509) *cms_certs = NULL;
+ STACK_OF(X509_CRL) *crls = NULL;
+ X509 *signer;
+ int i, scount = 0, ret = 0;
+ BIO *cmsbio = NULL, *tmpin = NULL, *tmpout = NULL;
+
+ if (!dcont && !check_content(cms))
+ return 0;
+ if (dcont && !(flags & CMS_BINARY)) {
+ const ASN1_OBJECT *coid = CMS_get0_eContentType(cms);
+ if (OBJ_obj2nid(coid) == NID_id_ct_asciiTextWithCRLF)
+ flags |= CMS_ASCIICRLF;
+ }
+
+ /* Attempt to find all signer certificates */
+
+ sinfos = CMS_get0_SignerInfos(cms);
+
+ if (sk_CMS_SignerInfo_num(sinfos) <= 0) {
+ CMSerr(CMS_F_CMS_VERIFY, CMS_R_NO_SIGNERS);
+ goto err;
+ }
+
+ for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
+ si = sk_CMS_SignerInfo_value(sinfos, i);
+ CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL);
+ if (signer)
+ scount++;
+ }
+
+ if (scount != sk_CMS_SignerInfo_num(sinfos))
+ scount += CMS_set1_signers_certs(cms, certs, flags);
+
+ if (scount != sk_CMS_SignerInfo_num(sinfos)) {
+ CMSerr(CMS_F_CMS_VERIFY, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND);
+ goto err;
+ }
+
+ /* Attempt to verify all signers certs */
+
+ if (!(flags & CMS_NO_SIGNER_CERT_VERIFY)) {
+ cms_certs = CMS_get1_certs(cms);
+ if (!(flags & CMS_NOCRL))
+ crls = CMS_get1_crls(cms);
+ for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
+ si = sk_CMS_SignerInfo_value(sinfos, i);
+ if (!cms_signerinfo_verify_cert(si, store, cms_certs, crls))
+ goto err;
+ }
+ }
+
+ /* Attempt to verify all SignerInfo signed attribute signatures */
+
+ if (!(flags & CMS_NO_ATTR_VERIFY)) {
+ for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
+ si = sk_CMS_SignerInfo_value(sinfos, i);
+ if (CMS_signed_get_attr_count(si) < 0)
+ continue;
+ if (CMS_SignerInfo_verify(si) <= 0)
+ goto err;
+ }
+ }
+
+ /*
+ * Performance optimization: if the content is a memory BIO then store
+ * its contents in a temporary read only memory BIO. This avoids
+ * potentially large numbers of slow copies of data which will occur when
+ * reading from a read write memory BIO when signatures are calculated.
+ */
+
+ if (dcont && (BIO_method_type(dcont) == BIO_TYPE_MEM)) {
+ char *ptr;
+ long len;
+ len = BIO_get_mem_data(dcont, &ptr);
+ tmpin = BIO_new_mem_buf(ptr, len);
+ if (tmpin == NULL) {
+ CMSerr(CMS_F_CMS_VERIFY, ERR_R_MALLOC_FAILURE);
+ goto err2;
+ }
+ } else
+ tmpin = dcont;
+ /*
+ * If not binary mode and detached generate digests by *writing* through
+ * the BIO. That makes it possible to canonicalise the input.
+ */
+ if (!(flags & SMIME_BINARY) && dcont) {
+ /*
+ * Create output BIO so we can either handle text or to ensure
+ * included content doesn't override detached content.
+ */
+ tmpout = cms_get_text_bio(out, flags);
+ if (!tmpout) {
+ CMSerr(CMS_F_CMS_VERIFY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ cmsbio = CMS_dataInit(cms, tmpout);
+ if (!cmsbio)
+ goto err;
+ /*
+ * Don't use SMIME_TEXT for verify: it adds headers and we want to
+ * remove them.
+ */
+ SMIME_crlf_copy(dcont, cmsbio, flags & ~SMIME_TEXT);
+
+ if (flags & CMS_TEXT) {
+ if (!SMIME_text(tmpout, out)) {
+ CMSerr(CMS_F_CMS_VERIFY, CMS_R_SMIME_TEXT_ERROR);
+ goto err;
+ }
+ }
+ } else {
+ cmsbio = CMS_dataInit(cms, tmpin);
+ if (!cmsbio)
+ goto err;
+
+ if (!cms_copy_content(out, cmsbio, flags))
+ goto err;
+
+ }
+ if (!(flags & CMS_NO_CONTENT_VERIFY)) {
+ for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
+ si = sk_CMS_SignerInfo_value(sinfos, i);
+ if (CMS_SignerInfo_verify_content(si, cmsbio) <= 0) {
+ CMSerr(CMS_F_CMS_VERIFY, CMS_R_CONTENT_VERIFY_ERROR);
+ goto err;
+ }
+ }
+ }
+
+ ret = 1;
+
+ err:
+ if (!(flags & SMIME_BINARY) && dcont) {
+ do_free_upto(cmsbio, tmpout);
+ if (tmpin != dcont)
+ BIO_free(tmpin);
+ } else {
+ if (dcont && (tmpin == dcont))
+ do_free_upto(cmsbio, dcont);
+ else
+ BIO_free_all(cmsbio);
+ }
+
+ if (out != tmpout)
+ BIO_free_all(tmpout);
+
+ err2:
+ sk_X509_pop_free(cms_certs, X509_free);
+ sk_X509_CRL_pop_free(crls, X509_CRL_free);
+
+ return ret;
+}