static int check_signer_name(CMS_ContentInfo *cms, const char *name)
{
STACK_OF(CMS_SignerInfo) *infos = CMS_get0_SignerInfos(cms);
STACK_OF(X509) *crts;
int i, ret = 1;
if ((name == NULL) || (name[0] == '\0'))
return 0;
crts = CMS_get1_certs(cms);
for (i = 0; i < sk_CMS_SignerInfo_num(infos); ++i) {
CMS_SignerInfo *si = sk_CMS_SignerInfo_value(infos, i);
int j;
for (j = 0; j < sk_X509_num(crts); ++j) {
X509 *crt = sk_X509_value(crts, j);
if (CMS_SignerInfo_cert_cmp(si, crt) == 0) {
ret = check_common_name(
X509_get_subject_name(crt), name);
}
}
}
sk_X509_pop_free(crts, X509_free);
return ret;
}
STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
{
STACK_OF(X509) *signers = NULL;
STACK_OF(CMS_SignerInfo) *sinfos;
CMS_SignerInfo *si;
int i;
sinfos = CMS_get0_SignerInfos(cms);
for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
{
si = sk_CMS_SignerInfo_value(sinfos, i);
if (si->signer)
{
if (!signers)
{
signers = sk_X509_new_null();
if (!signers)
return NULL;
}
if (!sk_X509_push(signers, si->signer))
{
sk_X509_free(signers);
return NULL;
}
}
}
return signers;
}
static void cms_sd_set_version(CMS_SignedData *sd)
{
int i;
CMS_CertificateChoices *cch;
CMS_RevocationInfoChoice *rch;
CMS_SignerInfo *si;
for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++)
{
cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
if (cch->type == CMS_CERTCHOICE_OTHER)
{
if (sd->version < 5)
sd->version = 5;
}
else if (cch->type == CMS_CERTCHOICE_V2ACERT)
{
if (sd->version < 4)
sd->version = 4;
}
else if (cch->type == CMS_CERTCHOICE_V1ACERT)
{
if (sd->version < 3)
sd->version = 3;
}
}
for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++)
{
rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
if (rch->type == CMS_REVCHOICE_OTHER)
{
if (sd->version < 5)
sd->version = 5;
}
}
if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
&& (sd->version < 3))
sd->version = 3;
for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++)
{
si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
{
if (si->version < 3)
si->version = 3;
if (sd->version < 3)
sd->version = 3;
}
else
sd->version = 1;
}
if (sd->version < 1)
sd->version = 1;
}
static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
{
STACK_OF(CMS_SignerInfo) *sinfos;
CMS_SignerInfo *sitmp;
int i;
sinfos = CMS_get0_SignerInfos(cms);
for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
{
ASN1_OCTET_STRING *messageDigest;
sitmp = sk_CMS_SignerInfo_value(sinfos, i);
if (sitmp == si)
continue;
if (CMS_signed_get_attr_count(sitmp) < 0)
continue;
if (OBJ_cmp(si->digestAlgorithm->algorithm,
sitmp->digestAlgorithm->algorithm))
continue;
messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
OBJ_nid2obj(NID_pkcs9_messageDigest),
-3, V_ASN1_OCTET_STRING);
if (!messageDigest)
{
CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST,
CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
return 0;
}
if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
V_ASN1_OCTET_STRING,
messageDigest, -1))
return 1;
else
return 0;
}
CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST);
return 0;
}