void pki_pkcs7::writeP7(XFile &file, bool PEM) const
{
if (!p7)
return;
if (PEM)
PEM_write_PKCS7(file.fp(), p7);
else
i2d_PKCS7_fp(file.fp(), p7);
openssl_error();
}
static int
wdsheader(struct dm_buf *hdr, char *src, char *device, char **pkg, PKCS7 *sig)
{
FILE *fp;
char path[PATH_MAX], tmp_entry[ENTRY_MAX],
tmp_file[L_tmpnam+1];
char srcpath[PATH_MAX];
int i, n;
int list_fd;
int block_cnt;
int len;
char cwd[MAXPATHLEN + 1];
boolean_t making_sig = B_FALSE;
making_sig = (sig != NULL) ? B_TRUE : B_FALSE;
(void) ds_close(0);
if (dstdev.pathname)
ds_fd = creat(device, 0644);
else
ds_fd = open(device, 1);
if (ds_fd < 0) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_OPEN), device, errno);
return (1);
}
if (ds_ginit(device) < 0) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_OPEN), device, errno);
(void) ds_close(0);
return (1);
}
/*
* The loop below assures compatibility with tapes that don't
* have a block size (e.g.: Exabyte) by forcing EOR at the end
* of each 512 bytes.
*/
for (block_cnt = 0; block_cnt < hdr->allocation;
block_cnt += BLK_SIZE) {
(void) write(ds_fd, (hdr->text_buffer + block_cnt), BLK_SIZE);
}
/*
* write the first cpio() archive to the datastream
* which should contain the pkginfo & pkgmap files
* for all packages
*/
(void) tmpnam(tmp_file); /* temporary file name */
if ((list_fd = open(tmp_file, O_RDWR | O_CREAT, 0644)) == -1) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_NOTMPFIL), tmp_file);
return (1);
}
/*
* Create a cpio-compatible list of the requisite files in
* the temporary file.
*/
if (!making_sig) {
for (i = 0; pkg[i]; i++) {
register ssize_t entry_size;
/*
* Copy pkginfo and pkgmap filenames into the
* temporary string allowing for the first line
* as a special case.
*/
entry_size = sprintf(tmp_entry,
(i == 0) ? "%s/%s\n%s/%s" : "\n%s/%s\n%s/%s",
pkg[i], PKGINFO, pkg[i], PKGMAP);
if (write(list_fd, tmp_entry,
entry_size) != entry_size) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_NOTMPFIL), tmp_file);
(void) close(list_fd);
ecleanup();
return (1);
}
}
} else {
register ssize_t entry_size;
/*
* if we're making a signature, we must make a
* temporary area full of symlinks to the requisite
* files, plus an extra entry for the signature, so
* that cpio will put all files and signature in the
* same archive in a single invocation of cpio.
*/
tmpsymdir = xstrdup(tmpnam(NULL));
if (mkdir(tmpsymdir, S_IRWXU)) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_MKDIR), tmpsymdir);
return (1);
}
/* generate the signature */
if (((len = snprintf(path, PATH_MAX, "%s/%s",
tmpsymdir, SIGNATURE_FILENAME)) >= PATH_MAX) ||
len < 0) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_NOTMPFIL), tmpsymdir);
cleanup();
return (1);
}
if ((fp = fopen(path, "w")) == NULL) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_NOTMPFIL), path);
cleanup();
return (1);
}
(void) PEM_write_PKCS7(fp, sig);
(void) fclose(fp);
for (i = 0; pkg[i]; i++) {
(void) snprintf(path, sizeof (path),
"%s/%s", tmpsymdir, pkg[i]);
if (mkdir(path, 0755)) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_MKDIR), path);
cleanup();
return (1);
}
(void) snprintf(path, sizeof (path),
"%s/%s/%s", tmpsymdir, pkg[i], PKGINFO);
(void) snprintf(srcpath, sizeof (srcpath),
"%s/%s/%s", src, pkg[i], PKGINFO);
if (symlink(srcpath, path) != 0) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_SYMLINK), path, srcpath);
cleanup();
return (1);
}
(void) snprintf(path, sizeof (path),
"%s/%s/%s", tmpsymdir, pkg[i], PKGMAP);
(void) snprintf(srcpath, sizeof (srcpath),
"%s/%s/%s", src, pkg[i], PKGMAP);
if (symlink(srcpath, path) != 0) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_SYMLINK), path, srcpath);
cleanup();
return (1);
}
/*
* Copy pkginfo and pkgmap filenames into the
* temporary string allowing for the first line
* as a special case.
*/
entry_size = snprintf(tmp_entry, sizeof (tmp_entry),
(i == 0) ? "%s/%s\n%s/%s" : "\n%s/%s\n%s/%s",
pkg[i], PKGINFO, pkg[i], PKGMAP);
if (write(list_fd, tmp_entry,
entry_size) != entry_size) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_NOTMPFIL), tmp_file);
(void) close(list_fd);
ecleanup();
cleanup();
return (1);
}
}
/* add signature to list of files */
entry_size = snprintf(tmp_entry, sizeof (tmp_entry), "\n%s",
SIGNATURE_FILENAME);
if (write(list_fd, tmp_entry, entry_size) != entry_size) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_NOTMPFIL), tmp_file);
(void) close(list_fd);
ecleanup();
cleanup();
return (1);
}
}
(void) lseek(list_fd, 0, SEEK_SET);
if (!making_sig) {
(void) snprintf(tmp_entry, sizeof (tmp_entry),
"%s -ocD -C %d", CPIOPROC, (int)BLK_SIZE);
} else {
/*
* when making a signature, we must make sure to follow
* symlinks during the cpio so that we don't archive
* the links themselves
*/
(void) snprintf(tmp_entry, sizeof (tmp_entry),
"%s -ocDL -C %d", CPIOPROC, (int)BLK_SIZE);
}
if (making_sig) {
/* save cwd and change to symlink dir for cpio invocation */
if (getcwd(cwd, MAXPATHLEN + 1) == NULL) {
logerr(pkg_gt(ERR_GETWD));
progerr(pkg_gt(ERR_TRANSFER));
cleanup();
return (1);
}
if (chdir(tmpsymdir)) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_CHDIR), tmpsymdir);
cleanup();
return (1);
}
}
if (n = esystem(tmp_entry, list_fd, ds_fd)) {
rpterr();
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_CMDFAIL), tmp_entry, n);
(void) close(list_fd);
(void) unlink(tmp_file);
cleanup();
return (1);
}
(void) close(list_fd);
(void) unlink(tmp_file);
if (making_sig) {
/* change to back to src dir for subsequent operations */
if (chdir(cwd)) {
progerr(pkg_gt(ERR_TRANSFER));
logerr(pkg_gt(MSG_CHDIR), cwd);
cleanup();
return (1);
}
}
return (0);
}
/*
* Wrap data in PKCS#7 envelopes and base64-encode the result.
* Data is PKCS#10 request in PKCSReq, or pkcs7_issuer_and_subject
* structure in GetCertInitial and PKCS7_ISSUER_AND_SERIAL in
* GetCert and GETCrl.
*/
int pkcs7_wrap(struct scep *s, struct sscep_ctx *ctx, struct sscep_operation_info *op_info)
{
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
unsigned char *buffer = NULL;
int len = 0;
STACK_OF(X509) *recipients = NULL;
PKCS7 *p7enc = NULL;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attributes;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
int ret = SCEP_PKISTATUS_P7;
char *payload = NULL;
int payload_len;
/* Create a new sender nonce for all messages
* XXXXXXXXXXXXXX should it be per transaction? */
s->sender_nonce_len = 16;
free(s->sender_nonce);/* Clean up from previous runs */
s->sender_nonce = (char *)malloc(s->sender_nonce_len * sizeof(char));
RAND_bytes((unsigned char *) s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch (s->request_type) {
case SCEP_REQUEST_PKCSREQ:
/*
* Set printable message type
* We set this later as an autheticated attribute
* "messageType".
*/
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating inner PKCS#7");
}
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if (i2d_X509_REQ_bio(databio, op_info->request) <= 0) {
qeo_log_e("error writing certificate request in bio");
goto error;
}
(void)BIO_flush(databio);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating inner PKCS#7");
}
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if (i2d_pkcs7_issuer_and_subject_bio(databio, s->ias_getcertinit)) {
qeo_log_e("error writing GetCertInitial data in bio");
goto error;
}
(void)BIO_flush(databio);
break;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
payload_len = BIO_get_mem_data(databio, &payload);
if (ctx->verbose){
qeo_log_i("data payload size: %d bytes", payload_len);
}
/* Create encryption certificate stack */
if ((recipients = sk_X509_new(NULL) ) == NULL) {
qeo_log_e("error creating certificate stack");
goto error;
}
if (sk_X509_push(recipients, op_info->racert) <= 0) {
qeo_log_e("error adding recipient encryption certificate");
goto error;
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(payload, payload_len)) == NULL ) {
qeo_log_e("error creating data bio");
goto error;
}
/* Encrypt */
if (!(p7enc = PKCS7_encrypt(recipients, encbio, ctx->enc_alg, PKCS7_BINARY))) {
qeo_log_e("request payload encrypt failed");
goto error;
}
if (ctx->verbose){
qeo_log_i("successfully encrypted payload");
}
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0) {
qeo_log_e("error writing encrypted data");
goto error;
}
(void)BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
BIO_free(memorybio);
memorybio=NULL;
if (ctx->verbose){
qeo_log_i("envelope size: %d bytes", len);
}
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, p7enc);
}
/* Create outer PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating outer PKCS#7");
}
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL ) {
qeo_log_e("failed creating PKCS#7 for signing");
goto error;
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed)) {
qeo_log_e("failed setting PKCS#7 type");
goto error;
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7, signercert, signerkey, ctx->sig_alg)) == NULL ) {
qeo_log_e("error adding PKCS#7 signature");
goto error;
}
if (ctx->verbose){
qeo_log_i("signature added successfully");
}
/* Set signed attributes */
if (ctx->verbose){
qeo_log_i("adding signed attributes");
}
attributes = sk_X509_ATTRIBUTE_new_null();
add_attribute_string(attributes, ctx->nid_transId, s->transaction_id, ctx);
add_attribute_string(attributes, ctx->nid_messageType, s->request_type_str, ctx);
add_attribute_octet(attributes, ctx->nid_senderNonce, s->sender_nonce, s->sender_nonce_len, ctx);
PKCS7_set_signed_attributes(si, attributes);
sk_X509_ATTRIBUTE_pop_free(attributes, X509_ATTRIBUTE_free);
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data))) {
qeo_log_e("error adding NID_pkcs9_contentType");
goto error;
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data)) {
qeo_log_e("failed setting PKCS#7 content type");
goto error;
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL );
if (pkcs7bio == NULL ) {
qeo_log_e("error opening bio for writing PKCS#7 data");
goto error;
}
if (len != BIO_write(pkcs7bio, buffer, len)) {
qeo_log_e("error writing PKCS#7 data");
goto error;
}
if (ctx->verbose){
qeo_log_i("PKCS#7 data written successfully");
}
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio)) {
qeo_log_e("error finalizing outer PKCS#7");
goto error;
}
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, s->request_p7);
}
/* base64-encode the data */
if (ctx->verbose){
qeo_log_i("applying base64 encoding");
}
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
outbio = BIO_push(BIO_new(BIO_f_base64()), memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
(void)BIO_flush(outbio);
payload_len = BIO_get_mem_data(memorybio, &payload);
s->request_payload = (char*) malloc(sizeof(char)*payload_len);
if (!s->request_payload){
goto error;
}
s->request_len = payload_len;
memcpy(s->request_payload, payload, s->request_len);
if (ctx->verbose){
qeo_log_i("base64 encoded payload size: %d bytes", payload_len);
}
ret = 0;
error:
BIO_free(databio);
BIO_free(encbio);
BIO_free_all(pkcs7bio);
BIO_free(memorybio);
BIO_free(outbio);
if (recipients != NULL){
sk_X509_free(recipients);/* Only free the stack, not the certificates */
}
PKCS7_free(p7enc);
OPENSSL_free(buffer);
return ret;
}
/*
* Unwrap PKCS#7 data and decrypt if necessary
*/
int pkcs7_unwrap(struct scep *s, struct sscep_ctx *ctx, struct sscep_operation_info *op_info, char* data, int datalen)
{
BIO *memorybio = NULL;
BIO *outbio = NULL;
BIO *pkcs7bio = NULL;
int i, bytes, used;
STACK_OF(PKCS7_SIGNER_INFO) *sk;
PKCS7 *p7enc = NULL;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attribs;
char *p = NULL;
unsigned char buffer[1024];
X509 *recipientcert;
EVP_PKEY *recipientkey;
int ret = SCEP_PKISTATUS_P7;
/* Create new memory BIO for outer PKCS#7 */
memorybio = BIO_new(BIO_s_mem());
/* Read in data */
if (ctx->verbose){
qeo_log_i("reading outer PKCS#7");
}
if (BIO_write(memorybio, data, datalen) <= 0) {
qeo_log_e("error reading PKCS#7 data");
goto error;
}
if (ctx->verbose){
qeo_log_i("PKCS#7 payload size: %d bytes", datalen);
}
s->reply_p7 = d2i_PKCS7_bio(memorybio, NULL );
if (s->reply_p7 == NULL ) {
qeo_log_e("error retrieving PKCS#7 data");
goto error;
}
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, s->reply_p7);
}
/* Make sure this is a signed PKCS#7 */
if (!PKCS7_type_is_signed(s->reply_p7)) {
qeo_log_e("PKCS#7 is not signed!");
goto error;
}
/* Create BIO for content data */
pkcs7bio = PKCS7_dataInit(s->reply_p7, NULL );
if (pkcs7bio == NULL ) {
qeo_log_e("cannot get PKCS#7 data");
goto error;
}
/* Copy enveloped data from PKCS#7 */
outbio = BIO_new(BIO_s_mem());
used = 0;
for (;;) {
bytes = BIO_read(pkcs7bio, buffer, sizeof(buffer));
used += bytes;
if (bytes <= 0)
break;
BIO_write(outbio, buffer, bytes);
}
(void)BIO_flush(outbio);
if (ctx->verbose){
qeo_log_i("PKCS#7 contains %d bytes of enveloped data", used);
}
/* Get signer */
sk = PKCS7_get_signer_info(s->reply_p7);
if (sk == NULL ) {
qeo_log_e("cannot get signer info!");
goto error;
}
/* Verify signature */
if (ctx->verbose){
qeo_log_i("verifying signature");
}
si = sk_PKCS7_SIGNER_INFO_value(sk, 0);
if (PKCS7_signatureVerify(pkcs7bio, s->reply_p7, si, op_info->racert) <= 0) {
qeo_log_e("error verifying signature");
goto error;
}
if (ctx->verbose){
qeo_log_i("signature ok");
}
/* Get signed attributes */
if (ctx->verbose){
qeo_log_i("finding signed attributes");
}
attribs = PKCS7_get_signed_attributes(si);
if (attribs == NULL ) {
qeo_log_e("no attributes found");
goto error;
}
/* Transaction id */
if ((get_signed_attribute(attribs, ctx->nid_transId, V_ASN1_PRINTABLESTRING, &p, ctx)) == 1) {
qeo_log_e("cannot find transId");
goto error;
}
if (ctx->verbose){
qeo_log_i("reply transaction id: %s", p);
}
if (strncmp(s->transaction_id, p, strlen(p))) {
qeo_log_e("transaction id mismatch");
goto error;
}
free(p);
p=NULL;
/* Message type, should be of type CertRep */
if (get_signed_attribute(attribs, ctx->nid_messageType, V_ASN1_PRINTABLESTRING, &p, ctx) == 1) {
qeo_log_e("cannot find messageType");
goto error;
}
if (atoi(p) != 3) {
qeo_log_e("wrong message type in reply");
goto error;
}
if (ctx->verbose){
qeo_log_i("reply message type is good");
}
free(p);
p=NULL;
/* Recipient nonces: */
if (get_signed_attribute(attribs, ctx->nid_recipientNonce, V_ASN1_OCTET_STRING, &p, ctx) == 1) {
qeo_log_e("cannot find recipientNonce");
goto error;
}
s->reply_recipient_nonce = p;
p = NULL;
if (ctx->verbose) {
qeo_log_i("recipientNonce in reply");
}
/*
* Compare recipient nonce to original sender nonce
* The draft says nothing about this, but it makes sense to me..
* XXXXXXXXXXXXXX check
*/
for (i = 0; i < 16; i++) {
if (s->sender_nonce[i] != s->reply_recipient_nonce[i]) {
if (ctx->verbose)
qeo_log_e("corrupted nonce received");
/* Instead of exit, break out */
break;
}
}
/* Get pkiStatus */
if (get_signed_attribute(attribs, ctx->nid_pkiStatus, V_ASN1_PRINTABLESTRING, &p, ctx) == 1) {
qeo_log_e("cannot find pkiStatus");
/* This is a mandatory attribute.. */
goto error;
}
switch (atoi(p)) {
case SCEP_PKISTATUS_SUCCESS:
qeo_log_i("pkistatus: SUCCESS");
s->pki_status = SCEP_PKISTATUS_SUCCESS;
break;
case SCEP_PKISTATUS_FAILURE:
qeo_log_i("pkistatus: FAILURE");
s->pki_status = SCEP_PKISTATUS_FAILURE;
break;
case SCEP_PKISTATUS_PENDING:
qeo_log_i("pkistatus: PENDING");
s->pki_status = SCEP_PKISTATUS_PENDING;
break;
default:
qeo_log_e("wrong pkistatus in reply");
goto error;
}
free(p);
p=NULL;
/* Get failInfo */
if (s->pki_status == SCEP_PKISTATUS_FAILURE) {
if (get_signed_attribute(attribs, ctx->nid_failInfo, V_ASN1_PRINTABLESTRING, &p, ctx) == 1) {
qeo_log_e("cannot find failInfo");
goto error;
}
switch (atoi(p)) {
case SCEP_FAILINFO_BADALG:
s->fail_info = SCEP_FAILINFO_BADALG;
qeo_log_i("reason: %s", SCEP_FAILINFO_BADALG_STR);
break;
case SCEP_FAILINFO_BADMSGCHK:
s->fail_info = SCEP_FAILINFO_BADMSGCHK;
qeo_log_i("reason: %s", SCEP_FAILINFO_BADMSGCHK_STR);
break;
case SCEP_FAILINFO_BADREQ:
s->fail_info = SCEP_FAILINFO_BADREQ;
qeo_log_i("reason: %s", SCEP_FAILINFO_BADREQ_STR);
break;
case SCEP_FAILINFO_BADTIME:
s->fail_info = SCEP_FAILINFO_BADTIME;
qeo_log_i("reason: %s", SCEP_FAILINFO_BADTIME_STR);
break;
case SCEP_FAILINFO_BADCERTID:
s->fail_info = SCEP_FAILINFO_BADCERTID;
qeo_log_i("reason: %s", SCEP_FAILINFO_BADCERTID_STR);
break;
default:
qeo_log_e("wrong failInfo in " "reply");
goto error;
}
free(p);
p=NULL;
}
/* If FAILURE or PENDING, we can return */
if (s->pki_status != SCEP_PKISTATUS_SUCCESS) {
/* There shouldn't be any more data... */
if (ctx->verbose && (used != 0)) {
qeo_log_e("illegal size of payload");
}
return (0);
}
/* We got success and expect data */
if (used == 0) {
qeo_log_e("illegal size of payload");
goto error;
}
/* Decrypt the inner PKCS#7 */
recipientcert = s->signercert;
recipientkey = s->signerkey;
if (ctx->verbose){
qeo_log_i("reading inner PKCS#7");
}
p7enc = d2i_PKCS7_bio(outbio, NULL );
if (p7enc == NULL ) {
qeo_log_e("cannot read inner PKCS#7");
goto error;
}
BIO_free(outbio);/* No longer need it */
outbio = NULL;
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, p7enc);
}
/* Decrypt the data */
outbio = BIO_new(BIO_s_mem());
if (ctx->verbose){
qeo_log_i("decrypting inner PKCS#7");
}
if (PKCS7_decrypt(p7enc, recipientkey, recipientcert, outbio, 0) == 0) {
qeo_log_e("error decrypting inner PKCS#7");
goto error;
}
(void)BIO_flush(outbio);
/* Write decrypted data */
PKCS7_free(s->reply_p7);
s->reply_p7 = d2i_PKCS7_bio(outbio, NULL );
ret = 0;
error:
free(p);
BIO_free(outbio);
BIO_free_all(pkcs7bio);
BIO_free(memorybio);
PKCS7_free(p7enc);
return ret;
}
int
main(int argc, char **argv) {
//ENGINE *e = NULL;
int c, host_port = 80, count = 1;
char *host_name, *p, *dir_name = NULL;
char http_string[16384];
struct http_reply reply;
unsigned int n;
unsigned char md[EVP_MAX_MD_SIZE];
struct scep scep_t;
FILE *fp = NULL;
BIO *bp;
STACK_OF(X509) *nextcara = NULL;
X509 *cert=NULL;
PKCS7 p7;
int i;
int required_option_space;
#ifdef WIN32
WORD wVersionRequested;
WSADATA wsaData;
int err;
//printf("Starting sscep\n");
//fprintf(stdout, "%s: starting sscep on WIN32, sscep version %s\n", pname, VERSION);
wVersionRequested = MAKEWORD( 2, 2 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
return;
}
/* Confirm that the WinSock DLL supports 2.2.*/
/* Note that if the DLL supports versions greater */
/* than 2.2 in addition to 2.2, it will still return */
/* 2.2 in wVersion since that is the version we */
/* requested. */
if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 2 )
{
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
WSACleanup( );
return;
}
#endif
/* Initialize scep layer */
init_scep();
/* Set program name */
pname = argv[0];
/* Set timeout */
timeout = TIMEOUT;
/* Check operation parameter */
if (!argv[1]) {
usage();
} else if (!strncmp(argv[1], "getca", 5)) {
operation_flag = SCEP_OPERATION_GETCA;
} else if (!strncmp(argv[1], "enroll", 6)) {
operation_flag = SCEP_OPERATION_ENROLL;
} else if (!strncmp(argv[1], "getcert", 7)) {
operation_flag = SCEP_OPERATION_GETCERT;
} else if (!strncmp(argv[1], "getcrl", 6)) {
operation_flag = SCEP_OPERATION_GETCRL;
} else if (!strncmp(argv[1], "getnextca", 9)) {
operation_flag = SCEP_OPERATION_GETNEXTCA;
} else {
fprintf(stderr, "%s: missing or illegal operation parameter\n",
argv[0]);
usage();
}
/* Skip first parameter and parse the rest of the command */
optind++;
while ((c = getopt(argc, argv, "c:C:de:E:f:g:hF:i:k:K:l:L:n:O:p:r:Rs:S:t:T:u:vw:m:HM:")) != -1)
switch(c) {
case 'c':
c_flag = 1;
c_char = optarg;
break;
case 'C':
C_flag = 1;
C_char = optarg;
break;
case 'd':
d_flag = 1;
break;
case 'e':
e_flag = 1;
e_char = optarg;
break;
case 'E':
E_flag = 1;
E_char = optarg;
break;
case 'F':
F_flag = 1;
F_char = optarg;
break;
case 'f':
f_flag = 1;
f_char = optarg;
break;
case 'g':
g_flag = 1;
g_char = optarg;
break;
case 'h'://TODO change to eg. ID --inform=ID
h_flag = 1;
break;
case 'H':
H_flag = 1;
break;
case 'i':
i_flag = 1;
i_char = optarg;
break;
case 'k':
k_flag = 1;
k_char = optarg;
break;
case 'K':
K_flag = 1;
K_char = optarg;
break;
case 'l':
l_flag = 1;
l_char = optarg;
break;
case 'L':
L_flag = 1;
L_char = optarg;
break;
case 'm':
m_flag = 1;
m_char = optarg;
break;
case 'M':
if(!M_flag) {
/* if this is the first time the option appears, create a
* new string.
*/
required_option_space = strlen(optarg) + 1;
M_char = malloc(required_option_space);
if(!M_char)
error_memory();
strncpy(M_char, optarg, required_option_space);
// set the flag, so we already have a string
M_flag = 1;
} else {
/* we already have a string, just extend it. */
// old part + new part + &-sign + null byte
required_option_space = strlen(M_char) + strlen(optarg) + 2;
M_char = realloc(M_char, required_option_space);
if(!M_char)
error_memory();
strncat(M_char, "&", 1);
strncat(M_char, optarg, strlen(optarg));
}
break;
case 'n':
n_flag = 1;
n_num = atoi(optarg);
break;
case 'O':
O_flag = 1;
O_char = optarg;
break;
case 'p':
p_flag = 1;
p_char = optarg;
break;
case 'r':
r_flag = 1;
r_char = optarg;
break;
case 'R':
R_flag = 1;
break;
case 's':
s_flag = 1;
/*s_char = optarg;*/
s_char = handle_serial(optarg);
break;
case 'S':
S_flag = 1;
S_char = optarg;
break;
case 't':
t_flag = 1;
t_num = atoi(optarg);
break;
case 'T':
T_flag = 1;
T_num = atoi(optarg);
break;
case 'u':
u_flag = 1;
url_char = optarg;
break;
case 'v':
v_flag = 1;
break;
case 'w':
w_flag = 1;
w_char = optarg;
break;
default:
printf("argv: %s\n", argv[optind]);
usage();
}
argc -= optind;
argv += optind;
/* If we debug, include verbose messages also */
if (d_flag)
v_flag = 1;
if(f_char){
scep_conf_init(f_char);
}else{
scep_conf = NULL; //moved init to here otherwise compile error on windows
}
/* Read in the configuration file: */
/*if (f_char) {
#ifdef WIN32
if ((fopen_s(&fp, f_char, "r")))
#else
if (!(fp = fopen(f_char, "r")))
#endif
fprintf(stderr, "%s: cannot open %s\n", pname, f_char);
else {
init_config(fp);
(void)fclose(fp);
}
}*/
if (v_flag)
fprintf(stdout, "%s: starting sscep, version %s\n",
pname, VERSION);
/*
* Create a new SCEP transaction and self-signed
* certificate based on cert request
*/
if (v_flag)
fprintf(stdout, "%s: new transaction\n", pname);
new_transaction(&scep_t);
/*enable Engine Support */
if (g_flag) {
scep_t.e = scep_engine_init(scep_t.e);
}
/*
* Check argument logic.
*/
if (!c_flag) {
if (operation_flag == SCEP_OPERATION_GETCA) {
fprintf(stderr,
"%s: missing CA certificate filename (-c)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
} else {
fprintf(stderr,
"%s: missing CA certificate (-c)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (operation_flag == SCEP_OPERATION_GETNEXTCA) {
fprintf(stderr,
"%s: missing nextCA certificate target filename (-c)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
} else {
fprintf(stderr,
"%s: missing nextCA certificate target filename(-c)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
}
if (!C_flag) {
if (operation_flag == SCEP_OPERATION_GETNEXTCA) {
fprintf(stderr,
"%s: missing nextCA certificate chain filename (-C)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
}
if (operation_flag == SCEP_OPERATION_ENROLL) {
if (!k_flag) {
fprintf(stderr, "%s: missing private key (-k)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (!r_flag) {
fprintf(stderr, "%s: missing request (-r)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (!l_flag) {
fprintf(stderr, "%s: missing local cert (-l)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
/* Set polling limits */
if (!n_flag)
n_num = MAX_POLL_COUNT;
if (!t_flag)
t_num = POLL_TIME;
if (!T_flag)
T_num = MAX_POLL_TIME;
}
if (operation_flag == SCEP_OPERATION_GETCERT) {
if (!l_flag) {
fprintf(stderr, "%s: missing local cert (-l)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (!s_flag) {
fprintf(stderr, "%s: missing serial no (-s)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (!w_flag) {
fprintf(stderr, "%s: missing cert file (-w)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (!k_flag) {
fprintf(stderr, "%s: missing private key (-k)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
}
if (operation_flag == SCEP_OPERATION_GETCRL) {
if (!l_flag) {
fprintf(stderr, "%s: missing local cert (-l)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (!w_flag) {
fprintf(stderr, "%s: missing crl file (-w)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (!k_flag) {
fprintf(stderr, "%s: missing private key (-k)\n",pname);
exit (SCEP_PKISTATUS_ERROR);
}
}
/* Break down the URL */
if (!u_flag) {
fprintf(stderr, "%s: missing URL (-u)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (strncmp(url_char, "http://", 7) && !p_flag) {
fprintf(stderr, "%s: illegal URL %s\n", pname, url_char);
exit (SCEP_PKISTATUS_ERROR);
}
if (p_flag) {
#ifdef WIN32
host_name = _strdup(p_char);
#else
host_name = strdup(p_char);
#endif
dir_name = url_char;
}
/* Break down the URL */
if (!u_flag) {
fprintf(stderr, "%s: missing URL (-u)\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (strncmp(url_char, "http://", 7) && !p_flag) {
fprintf(stderr, "%s: illegal URL %s\n", pname, url_char);
exit (SCEP_PKISTATUS_ERROR);
}
if (p_flag) {
#ifdef WIN32
host_name = _strdup(p_char);
#else
host_name = strdup(p_char);
#endif
dir_name = url_char;
}
#ifdef WIN32
else if (!(host_name = _strdup(url_char + 7)))
#else
else if (!(host_name = strdup(url_char + 7)))
#endif
error_memory();
p = host_name;
c = 0;
while (*p != '\0') {
if (*p == '/' && !p_flag && !c) {
*p = '\0';
if (*(p+1)) dir_name = p + 1;
c = 1;
}
if (*p == ':') {
*p = '\0';
if (*(p+1)) host_port = atoi(p+1);
}
p++;
}
if (!dir_name) {
fprintf(stderr, "%s: illegal URL %s\n", pname, url_char);
exit (SCEP_PKISTATUS_ERROR);
}
if (host_port < 1 || host_port > 65550) {
fprintf(stderr, "%s: illegal port number %d\n", pname,
host_port);
exit (SCEP_PKISTATUS_ERROR);
}
if (v_flag) {
fprintf(stdout, "%s: hostname: %s\n", pname, host_name);
fprintf(stdout, "%s: directory: %s\n", pname, dir_name);
fprintf(stdout, "%s: port: %d\n", pname, host_port);
}
/* Check algorithms */
if (!E_flag) {
enc_alg = (EVP_CIPHER *)EVP_des_cbc();
} else if (!strncmp(E_char, "blowfish", 8)) {
enc_alg = (EVP_CIPHER *)EVP_bf_cbc();
} else if (!strncmp(E_char, "des", 3)) {
enc_alg = (EVP_CIPHER *)EVP_des_cbc();
} else if (!strncmp(E_char, "3des", 4)) {
enc_alg = (EVP_CIPHER *)EVP_des_ede3_cbc();
} else if (!strncmp(E_char, "aes", 3)) {
enc_alg = (EVP_CIPHER *)EVP_aes_256_cbc();
} else {
fprintf(stderr, "%s: unsupported algorithm: %s\n",
pname, E_char);
exit (SCEP_PKISTATUS_ERROR);
}
if (!S_flag) {
sig_alg = (EVP_MD *)EVP_md5();
} else if (!strncmp(S_char, "md5", 3)) {
sig_alg = (EVP_MD *)EVP_md5();
} else if (!strncmp(S_char, "sha1", 4)) {
sig_alg = (EVP_MD *)EVP_sha1();
} else {
fprintf(stderr, "%s: unsupported algorithm: %s\n",
pname, S_char);
exit (SCEP_PKISTATUS_ERROR);
}
/* Fingerprint algorithm */
if (!F_flag) {
fp_alg = (EVP_MD *)EVP_md5();
} else if (!strncmp(F_char, "md5", 3)) {
fp_alg = (EVP_MD *)EVP_md5();
} else if (!strncmp(F_char, "sha1", 4)) {
fp_alg = (EVP_MD *)EVP_sha1();
} else {
fprintf(stderr, "%s: unsupported algorithm: %s\n",
pname, F_char);
exit (SCEP_PKISTATUS_ERROR);
}
/*
* Switch to operation specific code
*/
switch(operation_flag) {
case SCEP_OPERATION_GETCA:
if (v_flag)
fprintf(stdout, "%s: SCEP_OPERATION_GETCA\n",
pname);
/* Set CA identifier */
if (!i_flag)
i_char = CA_IDENTIFIER;
/* Forge the HTTP message */
if(!M_flag){
snprintf(http_string, sizeof(http_string),
"GET %s%s?operation=GetCACert&message=%s "
"HTTP/1.0\r\n\r\n", p_flag ? "" : "/", dir_name,
i_char);
}else{
snprintf(http_string, sizeof(http_string),
"GET %s%s?operation=GetCACert&message=%s&%s "
"HTTP/1.0\r\n\r\n", p_flag ? "" : "/", dir_name,
i_char, M_char);
}
if (d_flag){
printf("%s: requesting CA certificate\n", pname);
fprintf(stdout, "%s: scep msg: %s", pname,
http_string);
}
/*
* Send http message.
* Response is written to http_response struct "reply".
*/
reply.payload = NULL;
if ((c = send_msg (&reply, http_string, host_name,
host_port, operation_flag)) == 1) {
fprintf(stderr, "%s: error while sending "
"message\n", pname);
exit (SCEP_PKISTATUS_NET);
}
if (reply.payload == NULL) {
fprintf(stderr, "%s: no data, perhaps you "
"should define CA identifier (-i)\n", pname);
exit (SCEP_PKISTATUS_SUCCESS);
}
if (v_flag){
printf("%s: valid response from server\n", pname);
}
if (reply.type == SCEP_MIME_GETCA_RA) {
/* XXXXXXXXXXXXXXXXXXXXX chain not verified */
write_ca_ra(&reply);
}
/* Read payload as DER X.509 object: */
bp = BIO_new_mem_buf(reply.payload, reply.bytes);
cacert = d2i_X509_bio(bp, NULL);
/* Read and print certificate information */
if (!X509_digest(cacert, fp_alg, md, &n)) {
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_ERROR);
}
if (v_flag){
printf("%s: %s fingerprint: ", pname,
OBJ_nid2sn(EVP_MD_type(fp_alg)));
for (c = 0; c < (int)n; c++) {
printf("%02X%c",md[c],
(c + 1 == (int)n) ?'\n':':');
}
}
/* Write PEM-formatted file: */
#ifdef WIN32
if ((fopen_s(&fp,c_char , "w")))
#else
if (!(fp = fopen(c_char, "w")))
#endif
{
fprintf(stderr, "%s: cannot open CA file for "
"writing\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (PEM_write_X509(fp, c_char) != 1) {
fprintf(stderr, "%s: error while writing CA "
"file\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_ERROR);
}
if (v_flag)
printf("%s: CA certificate written as %s\n",
pname, c_char);
(void)fclose(fp);
pkistatus = SCEP_PKISTATUS_SUCCESS;
break;
case SCEP_OPERATION_GETNEXTCA:
if (v_flag)
fprintf(stdout, "%s: SCEP_OPERATION_GETNEXTCA\n",
pname);
/* Set CA identifier */
if (!i_flag)
i_char = CA_IDENTIFIER;
/* Forge the HTTP message */
if(!M_flag){
snprintf(http_string, sizeof(http_string),
"GET %s%s?operation=GetNextCACert&message=%s "
"HTTP/1.0\r\n\r\n", p_flag ? "" : "/", dir_name,
i_char);
}else{
snprintf(http_string, sizeof(http_string),
"GET %s%s?operation=GetNextCACert&message=%s&%s "
"HTTP/1.0\r\n\r\n", p_flag ? "" : "/", dir_name,
i_char, M_char);
}
if (d_flag){
printf("%s: requesting nextCA certificate\n", pname);
fprintf(stdout, "%s: scep msg: %s", pname,
http_string);
}
/*
* Send http message.
* Response is written to http_response struct "reply".
*/
reply.payload = NULL;
if ((c = send_msg (&reply, http_string, host_name,
host_port, operation_flag)) == 1) {
if(v_flag){
fprintf(stderr, "%s: error while sending "
"message\n", pname);
fprintf(stderr, "%s: getnextCA might be not available"
"\n", pname);
}
exit (SCEP_PKISTATUS_NET);
}
if (reply.payload == NULL) {
fprintf(stderr, "%s: no data, perhaps you "
"there is no nextCA available\n", pname);
exit (SCEP_PKISTATUS_SUCCESS);
}
if(d_flag)
printf("%s: valid response from server\n", pname);
if (reply.type == SCEP_MIME_GETNEXTCA) {
/* XXXXXXXXXXXXXXXXXXXXX chain not verified */
//write_ca_ra(&reply);
/* Set the whole struct as 0 */
memset(&scep_t, 0, sizeof(scep_t));
scep_t.reply_payload = reply.payload;
scep_t.reply_len = reply.bytes;
scep_t.request_type = SCEP_MIME_GETNEXTCA;
pkcs7_verify_unwrap(&scep_t , C_char);
//pkcs7_unwrap(&scep_t);
}
/* Get certs */
p7 = *(scep_t.reply_p7);
nextcara = scep_t.reply_p7->d.sign->cert;
if (v_flag) {
printf ("verify and unwrap: found %d cert(s)\n", sk_X509_num(nextcara));
}
for (i = 0; i < sk_X509_num(nextcara); i++) {
char buffer[1024];
char name[1024];
memset(buffer, 0, 1024);
memset(name, 0, 1024);
cert = sk_X509_value(nextcara, i);
if (v_flag) {
printf("%s: found certificate with\n"
" subject: '%s'\n", pname,
X509_NAME_oneline(X509_get_subject_name(cert),
buffer, sizeof(buffer)));
printf(" issuer: %s\n",
X509_NAME_oneline(X509_get_issuer_name(cert),
buffer, sizeof(buffer)));
}
/* Create name */
snprintf(name, 1024, "%s-%d", c_char, i);
/* Write PEM-formatted file: */
if (!(fp = fopen(name, "w"))) {
fprintf(stderr, "%s: cannot open cert file for writing\n",
pname);
exit (SCEP_PKISTATUS_FILE);
}
if (v_flag)
printf("%s: writing cert\n", pname);
if (d_flag)
PEM_write_X509(stdout, cert);
if (PEM_write_X509(fp, cert) != 1) {
fprintf(stderr, "%s: error while writing certificate "
"file\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_FILE);
}
if(v_flag)
printf("%s: certificate written as %s\n", pname, name);
(void)fclose(fp);
}
pkistatus = SCEP_PKISTATUS_SUCCESS;
break;
case SCEP_OPERATION_GETCERT:
case SCEP_OPERATION_GETCRL:
/* Read local certificate */
if (!l_flag) {
fprintf(stderr, "%s: missing local cert (-l)\n", pname);
exit (SCEP_PKISTATUS_FILE);
}
read_cert(&localcert, l_char);
case SCEP_OPERATION_ENROLL:
/*
* Read in CA cert, private key and certificate
* request in global variables.
*/
read_ca_cert();
if (!k_flag) {
fprintf(stderr, "%s: missing private key (-k)\n", pname);
exit (SCEP_PKISTATUS_FILE);
}
if(scep_conf != NULL) {
sscep_engine_read_key_new(&rsa, k_char, scep_t.e);
} else {
read_key(&rsa, k_char);
}
if ((K_flag && !O_flag) || (!K_flag && O_flag)) {
fprintf(stderr, "%s: -O also requires -K (and vice-versa)\n", pname);
exit (SCEP_PKISTATUS_FILE);
}
if (K_flag) {
//TODO auf hwcrhk prfen?
if(scep_conf != NULL) {
sscep_engine_read_key_old(&renewal_key, K_char, scep_t.e);
} else {
read_key(&renewal_key, K_char);
}
}
if (O_flag) {
read_cert(&renewal_cert, O_char);
}
if (operation_flag == SCEP_OPERATION_ENROLL) {
read_request();
scep_t.transaction_id = key_fingerprint(request);
if (v_flag) {
printf("%s: Read request with transaction id: %s\n", pname, scep_t.transaction_id);
}
}
if (operation_flag != SCEP_OPERATION_ENROLL)
goto not_enroll;
if (! O_flag) {
if (v_flag)
fprintf(stdout, "%s: generating selfsigned "
"certificate\n", pname);
new_selfsigned(&scep_t);
}
else {
/* Use existing certificate */
scep_t.signercert = renewal_cert;
scep_t.signerkey = renewal_key;
}
/* Write the selfsigned certificate if requested */
if (L_flag) {
/* Write PEM-formatted file: */
#ifdef WIN32
if ((fopen_s(&fp, L_char, "w"))) {
#else
if (!(fp = fopen(L_char, "w"))) {
#endif
fprintf(stderr, "%s: cannot open "
"file for writing\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
if (PEM_write_X509(fp,scep_t.signercert) != 1) {
fprintf(stderr, "%s: error while "
"writing certificate file\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_ERROR);
}
printf("%s: selfsigned certificate written "
"as %s\n", pname, L_char);
(void)fclose(fp);
}
/* Write issuer name and subject (GetCertInitial): */
if (!(scep_t.ias_getcertinit->subject =
X509_REQ_get_subject_name(request))) {
fprintf(stderr, "%s: error getting subject "
"for GetCertInitial\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_ERROR);
}
not_enroll:
if (!(scep_t.ias_getcertinit->issuer =
X509_get_issuer_name(cacert))) {
fprintf(stderr, "%s: error getting issuer "
"for GetCertInitial\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_ERROR);
}
/* Write issuer name and serial (GETC{ert,rl}): */
scep_t.ias_getcert->issuer =
scep_t.ias_getcertinit->issuer;
scep_t.ias_getcrl->issuer =
scep_t.ias_getcertinit->issuer;
if (!(scep_t.ias_getcrl->serial =
X509_get_serialNumber(cacert))) {
fprintf(stderr, "%s: error getting serial "
"for GetCertInitial\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_ERROR);
}
/* User supplied serial number */
if (s_flag) {
BIGNUM *bn;
ASN1_INTEGER *ai;
int len = BN_dec2bn(&bn , s_char);
if (!len || !(ai = BN_to_ASN1_INTEGER(bn, NULL))) {
fprintf(stderr, "%s: error converting serial\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_SS);
}
scep_t.ias_getcert->serial = ai;
}
break;
}
switch(operation_flag) {
case SCEP_OPERATION_ENROLL:
if (v_flag)
fprintf(stdout,
"%s: SCEP_OPERATION_ENROLL\n", pname);
/* Resum mode: set GetCertInitial */
if (R_flag) {
if (n_num == 0)
exit (SCEP_PKISTATUS_SUCCESS);
printf("%s: requesting certificate (#1)\n",
pname);
scep_t.request_type = SCEP_REQUEST_GETCERTINIT;
count++;
} else {
printf("%s: sending certificate request\n",
pname);
scep_t.request_type = SCEP_REQUEST_PKCSREQ;
}
break;
case SCEP_OPERATION_GETCERT:
if (v_flag)
fprintf(stdout,
"%s: SCEP_OPERATION_GETCERT\n", pname);
scep_t.request_type = SCEP_REQUEST_GETCERT;
printf("%s: requesting certificate\n",pname);
break;
case SCEP_OPERATION_GETCRL:
if (v_flag)
fprintf(stdout,
"%s: SCEP_OPERATION_GETCRL\n", pname);
scep_t.request_type = SCEP_REQUEST_GETCRL;
printf("%s: requesting crl\n",pname);
break;
}
/* Enter polling loop */
while (scep_t.pki_status != SCEP_PKISTATUS_SUCCESS) {
/* create payload */
pkcs7_wrap(&scep_t);
/* URL-encode */
p = url_encode((char *)scep_t.request_payload,
scep_t.request_len);
/*Test mode print SCEP request and don't send it*/
if(m_flag){
/* Write output file : */
#ifdef WIN32
if ((fopen_s(&fp, m_char, "w")))
#else
if (!(fp = fopen(m_char, "w")))
#endif
{
fprintf(stderr, "%s: cannot open output file for "
"writing\n", m_char);
}else
{
printf("%s: writing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(fp, scep_t.request_p7);
}
//printf("Print SCEP Request:\n %s\n",scep_t.request_payload);
return 0;
}
/* Forge the HTTP message */
/* snprintf(http_string, sizeof(http_string),
"GET %s%s?operation="
"PKIOperation&message="
"%s HTTP/1.0\r\n\r\n",
p_flag ? "" : "/", dir_name, p);*/
if(!M_flag){
snprintf(http_string, sizeof(http_string),
"GET %s%s?operation=PKIOperation&message=%s "
"HTTP/1.0\r\n\r\n", p_flag ? "" : "/", dir_name, p);
}else{
snprintf(http_string, sizeof(http_string),
"GET %s%s?operation=PKIOperation&message=%s&%s "
"HTTP/1.0\r\n\r\n", p_flag ? "" : "/", dir_name,p, M_char);
}
if (d_flag)
fprintf(stdout, "%s: scep msg: %s",
pname, http_string);
/* send http */
reply.payload = NULL;
if ((c = send_msg (&reply, http_string, host_name,
host_port, operation_flag)) == 1) {
fprintf(stderr, "%s: error while sending "
"message\n", pname);
exit (SCEP_PKISTATUS_NET);
}
/* Verisign Onsite returns strange reply...
* XXXXXXXXXXXXXXXXXXX */
if ((reply.status == 200) && (reply.payload == NULL)) {
/*
scep_t.pki_status = SCEP_PKISTATUS_PENDING;
break;
*/
exit (SCEP_PKISTATUS_ERROR);
}
printf("%s: valid response from server\n", pname);
/* Check payload */
scep_t.reply_len = reply.bytes;
scep_t.reply_payload = (unsigned char *)reply.payload;
pkcs7_unwrap(&scep_t);
pkistatus = scep_t.pki_status;
switch(scep_t.pki_status) {
case SCEP_PKISTATUS_SUCCESS:
break;
case SCEP_PKISTATUS_PENDING:
/* Check time limits */
if (((t_num * count) >= T_num) ||
(count > n_num)) {
exit (pkistatus);
}
scep_t.request_type =
SCEP_REQUEST_GETCERTINIT;
/* Wait for poll interval */
if (v_flag)
printf("%s: waiting for %d secs\n",
pname, t_num);
sleep(t_num);
printf("%s: requesting certificate "
"(#%d)\n", pname, count);
/* Add counter */
count++;
break;
case SCEP_PKISTATUS_FAILURE:
/* Handle failure */
switch (scep_t.fail_info) {
case SCEP_FAILINFO_BADALG:
exit (SCEP_PKISTATUS_BADALG);
case SCEP_FAILINFO_BADMSGCHK:
exit (SCEP_PKISTATUS_BADMSGCHK);
case SCEP_FAILINFO_BADREQ:
exit (SCEP_PKISTATUS_BADREQ);
case SCEP_FAILINFO_BADTIME:
exit (SCEP_PKISTATUS_BADTIME);
case SCEP_FAILINFO_BADCERTID:
exit (SCEP_PKISTATUS_BADCERTID);
/* Shouldn't be there... */
default:
exit (SCEP_PKISTATUS_ERROR);
}
default:
fprintf(stderr, "%s: unknown "
"pkiStatus\n", pname);
exit (SCEP_PKISTATUS_ERROR);
}
}
/* We got SUCCESS, analyze the reply */
switch (scep_t.request_type) {
/* Local certificate */
case SCEP_REQUEST_PKCSREQ:
case SCEP_REQUEST_GETCERTINIT:
write_local_cert(&scep_t);
break;
/* Other end entity certificate */
case SCEP_REQUEST_GETCERT:
write_other_cert(&scep_t);
break;
break;
/* CRL */
case SCEP_REQUEST_GETCRL:
write_crl(&scep_t);
break;
}
//TODO
//richtiger ort für disable??
// if(e){
// ENGINE_finish(*e);
// ENGINE_free(*e);
// hwEngine = NULL;
// ENGINE_cleanup();
// }
//
return (pkistatus);
}
void
usage() {
fprintf(stdout, "\nsscep version %s\n\n" , VERSION);
fprintf(stdout, "Usage: %s OPERATION [OPTIONS]\n"
"\nAvailable OPERATIONs are\n"
" getca Get CA/RA certificate(s)\n"
" getnextca Get next CA/RA certificate(s)\n"
" enroll Enroll certificate\n"
" getcert Query certificate\n"
" getcrl Query CRL\n"
"\nGeneral OPTIONS\n"
" -u <url> SCEP server URL\n"
" -p <host:port> Use proxy server at host:port\n"
" -M <string> Monitor Information String name=value&name=value ...\n"
" -g Enable Engine support\n"
" -h Keyforme=ID. \n"//TODO
" -f <file> Use configuration file\n"
" -c <file> CA certificate file (write if OPERATION is getca or getnextca)\n"
" -E <name> PKCS#7 encryption algorithm (des|3des|blowfish|aes)\n"
" -S <name> PKCS#7 signature algorithm (md5|sha1)\n"
" -v Verbose operation\n"
" -d Debug (even more verbose operation)\n"
"\nOPTIONS for OPERATION getca are\n"
" -i <string> CA identifier string\n"
" -F <name> Fingerprint algorithm\n"
"\nOPTIONS for OPERATION getnextca are\n"
" -C <file> Local certificate chain file for signature verification in PEM format \n"
" -F <name> Fingerprint algorithm\n"
" -c <file> CA certificate file (write if OPERATION is getca or getnextca)\n"
" -w <file> Write signer certificate in file (optional) \n"
"\nOPTIONS for OPERATION enroll are\n"
" -k <file> Private key file\n"
" -r <file> Certificate request file\n"
" -K <file> Signature private key file, use with -O\n"
" -O <file> Signature certificate (used instead of self-signed)\n"
" -l <file> Write enrolled certificate in file\n"
" -e <file> Use different CA cert for encryption\n"
" -L <file> Write selfsigned certificate in file\n"
" -t <secs> Polling interval in seconds\n"
" -T <secs> Max polling time in seconds\n"
" -n <count> Max number of GetCertInitial requests\n"
" -R Resume interrupted enrollment\n"
"\nOPTIONS for OPERATION getcert are\n"
" -k <file> Private key file\n"
" -l <file> Local certificate file\n"
" -s <number> Certificate serial number\n"
" -w <file> Write certificate in file\n"
"\nOPTIONS for OPERATION getcrl are\n"
" -k <file> Private key file\n"
" -l <file> Local certificate file\n"
" -w <file> Write CRL in file\n\n", pname);
exit(0);
}
/*
* Unwrap PKCS#7 data and decrypt if necessary
*/
int pkcs7_unwrap(struct scep *s) {
BIO *memorybio;
BIO *outbio;
BIO *pkcs7bio;
int i, len, bytes, used;
STACK_OF(PKCS7_SIGNER_INFO) *sk;
PKCS7 *p7enc;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attribs;
char *p;
unsigned char buffer[1024];
X509 *recipientcert;
EVP_PKEY *recipientkey;
/* Create new memory BIO for outer PKCS#7 */
memorybio = BIO_new(BIO_s_mem());
/* Read in data */
if (v_flag)
printf("%s: reading outer PKCS#7\n",pname);
if ((len = BIO_write(memorybio, s->reply_payload, s->reply_len)) <= 0) {
fprintf(stderr, "%s: error reading PKCS#7 data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: PKCS#7 payload size: %d bytes\n", pname, len);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
s->reply_p7 = d2i_PKCS7_bio(memorybio, NULL);
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, s->reply_p7);
}
/* Make sure this is a signed PKCS#7 */
if (!PKCS7_type_is_signed(s->reply_p7)) {
fprintf(stderr, "%s: PKCS#7 is not signed!\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Create BIO for content data */
pkcs7bio = PKCS7_dataInit(s->reply_p7, NULL);
if (pkcs7bio == NULL) {
fprintf(stderr, "%s: cannot get PKCS#7 data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Copy enveloped data from PKCS#7 */
outbio = BIO_new(BIO_s_mem());
used = 0;
for (;;) {
bytes = BIO_read(pkcs7bio, buffer, sizeof(buffer));
used += bytes;
if (bytes <= 0) break;
BIO_write(outbio, buffer, bytes);
}
BIO_flush(outbio);
if (v_flag)
printf("%s: PKCS#7 contains %d bytes of enveloped data\n",
pname, used);
/* Get signer */
sk = PKCS7_get_signer_info(s->reply_p7);
if (sk == NULL) {
fprintf(stderr, "%s: cannot get signer info!\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Verify signature */
if (v_flag)
printf("%s: verifying signature\n", pname);
si = sk_PKCS7_SIGNER_INFO_value(sk, 0);
if (PKCS7_signatureVerify(pkcs7bio, s->reply_p7, si, cacert) <= 0) {
fprintf(stderr, "%s: error verifying signature\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: signature ok\n", pname);
/* Get signed attributes */
if (v_flag)
printf("%s: finding signed attributes\n", pname);
attribs = PKCS7_get_signed_attributes(si);
if (attribs == NULL) {
fprintf(stderr, "%s: no attributes found\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Transaction id */
if ((get_signed_attribute(attribs, nid_transId,
V_ASN1_PRINTABLESTRING, &p)) == 1) {
fprintf(stderr, "%s: cannot find transId\n", pname);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: reply transaction id: %s\n", pname, p);
if (strncmp(s->transaction_id, p, strlen(p))) {
fprintf(stderr, "%s: transaction id mismatch\n", pname);
exit (SCEP_PKISTATUS_P7);
}
/* Message type, should be of type CertRep */
if ((i = get_signed_attribute(attribs, nid_messageType,
V_ASN1_PRINTABLESTRING, &p)) == 1) {
fprintf(stderr, "%s: cannot find messageType\n", pname);
exit (SCEP_PKISTATUS_P7);
}
if (atoi(p) != 3) {
fprintf(stderr, "%s: wrong message type in reply\n", pname);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: reply message type is good\n", pname);
/* Sender and recipient nonces: */
if ((i = get_signed_attribute(attribs, nid_senderNonce,
V_ASN1_OCTET_STRING, &p)) == 1) {
if (v_flag)
fprintf(stderr, "%s: cannot find senderNonce\n", pname);
/* Some implementations don't put in on reply */
/* XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
exit (SCEP_PKISTATUS_P7); */
}
s->reply_sender_nonce = p;
if (v_flag) {
printf("%s: senderNonce in reply: ", pname);
for (i = 0; i < 16; i++) {
printf("%02X", s->reply_sender_nonce[i]);
}
printf("\n");
}
if (( i = get_signed_attribute(attribs, nid_recipientNonce,
V_ASN1_OCTET_STRING, &p)) == 1) {
fprintf(stderr, "%s: cannot find recipientNonce\n", pname);
exit (SCEP_PKISTATUS_P7);
}
s->reply_recipient_nonce = p;
if (v_flag) {
printf("%s: recipientNonce in reply: ", pname);
for (i = 0; i < 16; i++) {
printf("%02X", s->reply_recipient_nonce[i]);
}
printf("\n");
}
/*
* Compare recipient nonce to original sender nonce
* The draft says nothing about this, but it makes sense to me..
* XXXXXXXXXXXXXX check
*/
for (i = 0; i < 16; i++) {
if (s->sender_nonce[i] != s->reply_recipient_nonce[i]) {
if (v_flag)
fprintf(stderr, "%s: corrupted nonce "
"received\n", pname);
/* Instead of exit, break out */
break;
}
}
/* Get pkiStatus */
if ((i = get_signed_attribute(attribs, nid_pkiStatus,
V_ASN1_PRINTABLESTRING, &p)) == 1) {
fprintf(stderr, "%s: cannot find pkiStatus\n", pname);
/* This is a mandatory attribute.. */
exit (SCEP_PKISTATUS_P7);
}
switch (atoi(p)) {
case SCEP_PKISTATUS_SUCCESS:
printf("%s: pkistatus: SUCCESS\n",pname);
s->pki_status = SCEP_PKISTATUS_SUCCESS;
break;
case SCEP_PKISTATUS_FAILURE:
printf("%s: pkistatus: FAILURE\n",pname);
s->pki_status = SCEP_PKISTATUS_FAILURE;
break;
case SCEP_PKISTATUS_PENDING:
printf("%s: pkistatus: PENDING\n",pname);
s->pki_status = SCEP_PKISTATUS_PENDING;
break;
default:
fprintf(stderr, "%s: wrong pkistatus in reply\n",pname);
exit (SCEP_PKISTATUS_P7);
}
/* Get failInfo */
if (s->pki_status == SCEP_PKISTATUS_FAILURE) {
if ((i = get_signed_attribute(attribs, nid_failInfo,
V_ASN1_PRINTABLESTRING, &p)) == 1) {
fprintf(stderr, "%s: cannot find failInfo\n",
pname);
exit (SCEP_PKISTATUS_P7);
}
switch (atoi(p)) {
case SCEP_FAILINFO_BADALG:
s->fail_info = SCEP_FAILINFO_BADALG;
printf("%s: reason: %s\n", pname,
SCEP_FAILINFO_BADALG_STR);
break;
case SCEP_FAILINFO_BADMSGCHK:
s->fail_info = SCEP_FAILINFO_BADMSGCHK;
printf("%s: reason: %s\n", pname,
SCEP_FAILINFO_BADMSGCHK_STR);
break;
case SCEP_FAILINFO_BADREQ:
s->fail_info = SCEP_FAILINFO_BADREQ;
printf("%s: reason: %s\n", pname,
SCEP_FAILINFO_BADREQ_STR);
break;
case SCEP_FAILINFO_BADTIME:
s->fail_info = SCEP_FAILINFO_BADTIME;
printf("%s: reason: %s\n", pname,
SCEP_FAILINFO_BADTIME_STR);
break;
case SCEP_FAILINFO_BADCERTID:
s->fail_info = SCEP_FAILINFO_BADCERTID;
printf("%s: reason: %s\n", pname,
SCEP_FAILINFO_BADCERTID_STR);
break;
default:
fprintf(stderr, "%s: wrong failInfo in " "reply\n",pname);
exit (SCEP_PKISTATUS_P7);
}
}
/* If FAILURE or PENDING, we can return */
if (s->pki_status != SCEP_PKISTATUS_SUCCESS) {
/* There shouldn't be any more data... */
if (v_flag && (used != 0)) {
fprintf(stderr, "%s: illegal size of payload\n", pname);
}
return (0);
}
/* We got success and expect data */
if (used == 0) {
fprintf(stderr, "%s: illegal size of payload\n", pname);
exit (SCEP_PKISTATUS_P7);
}
/* Decrypt the inner PKCS#7 */
if ((s->request_type == SCEP_REQUEST_PKCSREQ) ||
(s->request_type == SCEP_REQUEST_GETCERTINIT)) {
recipientcert = s->signercert;
recipientkey = s->signerkey;
}
else {
recipientcert = localcert;
recipientkey = rsa;
}
if (v_flag)
printf("%s: reading inner PKCS#7\n",pname);
p7enc = d2i_PKCS7_bio(outbio, NULL);
if (p7enc == NULL) {
fprintf(stderr, "%s: cannot read inner PKCS#7\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, p7enc);
}
/* Decrypt the data */
outbio = BIO_new(BIO_s_mem());
if (v_flag)
printf("%s: decrypting inner PKCS#7\n",pname);
if (PKCS7_decrypt(p7enc, recipientkey, recipientcert, outbio, 0) == 0) {
fprintf(stderr, "%s: error decrypting inner PKCS#7\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(outbio);
/* Write decrypted data */
s->reply_len = BIO_get_mem_data(outbio, &s->reply_payload);
if (v_flag)
printf("%s: PKCS#7 payload size: %d bytes\n", pname,
s->reply_len);
BIO_set_flags(outbio, BIO_FLAGS_MEM_RDONLY);
s->reply_p7 = d2i_PKCS7_bio(outbio, NULL);
return (0);
}
/*
* Wrap data in PKCS#7 envelopes and base64-encode the result.
* Data is PKCS#10 request in PKCSReq, or pkcs7_issuer_and_subject
* structure in GetCertInitial and PKCS7_ISSUER_AND_SERIAL in
* GetCert and GETCrl.
*/
int pkcs7_wrap(struct scep *s) {
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
BIO *base64bio = NULL;
unsigned char *buffer = NULL;
int rc, len = 0;
STACK_OF(X509) *recipients;
PKCS7 *p7enc;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attributes;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
/* Create a new sender nonce for all messages
* XXXXXXXXXXXXXX should it be per transaction? */
s->sender_nonce_len = 16;
s->sender_nonce = (unsigned char *)malloc(s->sender_nonce_len);
RAND_bytes(s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch(s->request_type) {
case SCEP_REQUEST_PKCSREQ:
/*
* Set printable message type
* We set this later as an autheticated attribute
* "messageType".
*/
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (v_flag)
printf("%s: creating inner PKCS#7\n", pname);
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_X509_REQ_bio(databio, request)) <= 0) {
fprintf(stderr, "%s: error writing "
"certificate request in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (v_flag)
printf("%s: creating inner PKCS#7\n", pname);
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_pkcs7_issuer_and_subject_bio(databio,
s->ias_getcertinit)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCertInitial data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERT_STR;
/* Signer cert */
signercert = localcert;
signerkey = rsa;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_PKCS7_ISSUER_AND_SERIAL_bio(databio,
s->ias_getcert)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCert data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCRL:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCRL_STR;
/* Signer cert */
signercert = localcert;
signerkey = rsa;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_PKCS7_ISSUER_AND_SERIAL_bio(databio,
s->ias_getcrl)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCert data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
s->request_len = BIO_get_mem_data(databio, &s->request_payload);
if (v_flag)
printf("%s: data payload size: %d bytes\n", pname,
s->request_len);
BIO_free(databio);
/* Create encryption certificate stack */
if ((recipients = sk_X509_new(NULL)) == NULL) {
fprintf(stderr, "%s: error creating "
"certificate stack\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Use different CA cert for encryption if requested */
if (e_flag) {
if (sk_X509_push(recipients, encert) <= 0) {
fprintf(stderr, "%s: error adding recipient encryption "
"certificate\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Use same CA cert also for encryption */
} else {
if (sk_X509_push(recipients, cacert) <= 0) {
fprintf(stderr, "%s: error adding recipient encryption "
"certificate\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(s->request_payload,
s->request_len)) == NULL) {
fprintf(stderr, "%s: error creating data " "bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Encrypt */
if (!(p7enc = PKCS7_encrypt(recipients, encbio,
enc_alg, PKCS7_BINARY))) {
fprintf(stderr, "%s: request payload encrypt failed\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: successfully encrypted payload\n", pname);
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0) {
fprintf(stderr, "%s: error writing encrypted data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
if (v_flag)
printf("%s: envelope size: %d bytes\n", pname, len);
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, p7enc);
}
BIO_free(memorybio);
/* Create outer PKCS#7 */
if (v_flag)
printf("%s: creating outer PKCS#7\n", pname);
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL) {
fprintf(stderr, "%s: failed creating PKCS#7 for signing\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed)) {
fprintf(stderr, "%s: failed setting PKCS#7 type\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7,
signercert, signerkey, sig_alg)) == NULL) {
fprintf(stderr, "%s: error adding PKCS#7 signature\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: signature added successfully\n", pname);
/* Set signed attributes */
if (v_flag)
printf("%s: adding signed attributes\n", pname);
attributes = sk_X509_ATTRIBUTE_new_null();
add_attribute_string(attributes, nid_transId, s->transaction_id);
add_attribute_string(attributes, nid_messageType, s->request_type_str);
add_attribute_octet(attributes, nid_senderNonce, s->sender_nonce,
s->sender_nonce_len);
PKCS7_set_signed_attributes(si, attributes);
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data))) {
fprintf(stderr, "%s: error adding NID_pkcs9_contentType\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data)) {
fprintf(stderr, "%s: failed setting PKCS#7 content type\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL);
if (pkcs7bio == NULL) {
fprintf(stderr, "%s: error opening bio for writing PKCS#7 "
"data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (len != BIO_write(pkcs7bio, buffer, len)) {
fprintf(stderr, "%s: error writing PKCS#7 data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: PKCS#7 data written successfully\n", pname);
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio)) {
fprintf(stderr, "%s: error finalizing outer PKCS#7\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, s->request_p7);
}
/* base64-encode the data */
if (v_flag)
printf("%s: applying base64 encoding\n",pname);
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
base64bio = BIO_new(BIO_f_base64());
outbio = BIO_push(base64bio, memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
BIO_flush(outbio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
s->request_len = BIO_get_mem_data(memorybio, &s->request_payload);
if (v_flag)
printf("%s: base64 encoded payload size: %d bytes\n",
pname, s->request_len);
BIO_free(outbio);
return (0);
}