static void ctx_update(fko_ctx_t *ctx, int new_ctx_flag,
int destroy_ctx_flag, int print_flag)
{
if (destroy_ctx_flag == CTX_DESTROY) {
if (print_flag == DO_PRINT)
printf("fko_destroy(): %s\n", fko_errstr(fko_destroy(*ctx)));
else
fko_destroy(*ctx);
spa_calls++;
*ctx = NULL;
}
if (new_ctx_flag == NEW_CTX) {
/* always destroy before re-creating */
if (print_flag == DO_PRINT)
printf("fko_destroy(): %s\n", fko_errstr(fko_destroy(*ctx)));
else
fko_destroy(*ctx);
*ctx = NULL;
if (print_flag == DO_PRINT)
printf("fko_new(): %s\n", fko_errstr(fko_new(ctx)));
else
fko_new(ctx);
spa_calls += 2;
}
return;
}
static void afl_enc_pkt_from_file(fko_srv_options_t *opts)
{
FILE *fp = NULL;
fko_ctx_t decrypt_ctx = NULL;
unsigned char enc_spa_pkt[AFL_MAX_PKT_SIZE] = {0}, rc;
int res = 0, es = EXIT_SUCCESS, enc_msg_len;
char dump_buf[AFL_DUMP_CTX_SIZE];
fp = fopen(opts->config[CONF_AFL_PKT_FILE], "rb");
if(fp != NULL)
{
enc_msg_len = 0;
while(fread(&rc, 1, 1, fp))
{
enc_spa_pkt[enc_msg_len] = rc;
enc_msg_len++;
if(enc_msg_len == AFL_MAX_PKT_SIZE-1)
break;
}
fclose(fp);
fko_new(&decrypt_ctx);
res = fko_afl_set_spa_data(decrypt_ctx, (const char *)enc_spa_pkt,
enc_msg_len);
if(res == FKO_SUCCESS)
res = fko_decrypt_spa_data(decrypt_ctx, "fwknoptest",
strlen("fwknoptest"));
if(res == FKO_SUCCESS)
res = dump_ctx_to_buffer(decrypt_ctx, dump_buf, sizeof(dump_buf));
if(res == FKO_SUCCESS)
log_msg(LOG_INFO, "%s", dump_buf);
else
log_msg(LOG_ERR, "Error (%d): %s", res, fko_errstr(res));
fko_destroy(decrypt_ctx);
if(res == FKO_SUCCESS)
{
log_msg(LOG_INFO, "SPA packet decode: %s", fko_errstr(res));
es = EXIT_SUCCESS;
}
else
{
log_msg(LOG_ERR, "Could not decode SPA packet: %s", fko_errstr(res));
es = EXIT_FAILURE;
}
}
else
log_msg(LOG_ERR, "Could not acquire SPA packet from file: %s.",
opts->config[CONF_AFL_PKT_FILE]);
clean_exit(opts, NO_FW_CLEANUP, es);
}
int main(void) {
fko_ctx_t ctx = NULL;
int res = 0, i, es = EXIT_SUCCESS;
int exec=0, success=0, fail=0;
fiu_init(0);
for (i=0; i < sizeof(fiu_rvs)/sizeof(int); i++) {
exec++;
printf("[+] libfiu injection tag: %s\n", fiu_tags[i]);
fiu_enable(fiu_tags[i], fiu_rvs[i], NULL, 0);
res = fko_new(&ctx);
if(strncmp(fiu_tags[i], "fko_set_rand_value_lenval",
strlen("fko_set_rand_value_lenval")) == 0)
res = fko_set_rand_value(ctx, "asdf1234");
if(strncmp(fiu_tags[i], "fko_set_rand_value_strdup",
strlen("fko_set_rand_value_strdup")) == 0)
res = fko_set_rand_value(ctx, "asdf1234");
if(strncmp(fiu_tags[i], "fko_set_username_valuser",
strlen("fko_set_username_valuser")) == 0)
res = fko_set_username(ctx, "BADCHAR=");
if(strncmp(fiu_tags[i], "fko_set_username_strdup",
strlen("fko_set_username_strdup")) == 0)
res = fko_set_username(ctx, "normaluser");
if(res == FKO_SUCCESS)
{
printf("[-] fko_new(): %s\n", fko_errstr(res));
fail++;
es = EXIT_FAILURE;
}
else
{
printf("[+] fko_new(): %s\n", fko_errstr(res));
success++;
}
fko_destroy(ctx);
ctx = NULL;
fiu_disable(fiu_tags[i]);
}
printf("fiu_fault_injection() passed/failed/executed: %d/%d/%d\n",
success, fail, exec);
return es;
}
static void afl_pkt_from_stdin(fko_srv_options_t *opts)
{
FILE *fp = NULL;
fko_ctx_t decode_ctx = NULL;
unsigned char spa_pkt[AFL_MAX_PKT_SIZE] = {0};
int res = 0, es = EXIT_SUCCESS;
char dump_buf[AFL_DUMP_CTX_SIZE];
fp = fdopen(STDIN_FILENO, "r");
if(fp != NULL)
{
if(fgets((char *)spa_pkt, AFL_MAX_PKT_SIZE, fp) == NULL)
{
fclose(fp);
clean_exit(opts, NO_FW_CLEANUP, EXIT_FAILURE);
}
fclose(fp);
fko_new(&decode_ctx);
res = fko_set_encoded_data(decode_ctx, (char *) spa_pkt,
strlen((char *)spa_pkt), 0, FKO_DIGEST_SHA256);
if(res == FKO_SUCCESS)
res = fko_set_spa_data(decode_ctx, (const char *) spa_pkt);
if(res == FKO_SUCCESS)
res = fko_decode_spa_data(decode_ctx);
if(res == FKO_SUCCESS)
res = dump_ctx_to_buffer(decode_ctx, dump_buf, sizeof(dump_buf));
if(res == FKO_SUCCESS)
log_msg(LOG_INFO, "%s", dump_buf);
fko_destroy(decode_ctx);
if(res == FKO_SUCCESS)
{
log_msg(LOG_INFO, "SPA packet decode: %s", fko_errstr(res));
es = EXIT_SUCCESS;
}
else
{
log_msg(LOG_ERR, "Could not decode SPA packet: %s", fko_errstr(res));
es = EXIT_FAILURE;
}
}
else
log_msg(LOG_ERR, "Could not acquire SPA packet from stdin.");
clean_exit(opts, NO_FW_CLEANUP, es);
}
int main(void) {
fko_ctx_t ctx = NULL;
int res = 0;
res = fko_new(&ctx);
if (res == FKO_SUCCESS)
printf("[+] fko_new(): %s\n", fko_errstr(res));
else
printf("[-] fko_new(): %s\n", fko_errstr(res));
fko_destroy(ctx);
return 0;
}
/* init_ctx
*/
static PyObject *
init_ctx(PyObject *self, PyObject *args)
{
fko_ctx_t ctx;
int res;
res = fko_new(&ctx);
if(res != FKO_SUCCESS)
{
PyErr_SetString(FKOError, fko_errstr(res));
return NULL;
}
return Py_BuildValue("k", ctx);
}
static void spa_default_ctx(fko_ctx_t *ctx)
{
fko_new(ctx);
fko_set_rand_value(*ctx, NULL);
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
fko_set_spa_message(*ctx, "123.123.123.123,tcp/22");
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
fko_set_spa_message_type(*ctx, FKO_ACCESS_MSG);
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
fko_set_username(*ctx, "someuser");
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
fko_set_spa_encryption_type(*ctx, FKO_ENCRYPTION_RIJNDAEL);
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
fko_set_spa_encryption_mode(*ctx, FKO_ENC_MODE_CBC);
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
fko_set_spa_digest_type(*ctx, FKO_DEFAULT_DIGEST);
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
fko_set_spa_hmac_type(*ctx, FKO_HMAC_SHA256);
fko_spa_data_final(*ctx, ENC_KEY, 16, HMAC_KEY, 16);
// display_ctx(*ctx);
spa_calls += 16;
return;
}
int
main(int argc, char **argv)
{
fko_ctx_t ctx = NULL;
fko_ctx_t ctx2 = NULL;
int res;
char *spa_data=NULL, *version=NULL;
char access_buf[MAX_LINE_LEN] = {0};
char key[MAX_KEY_LEN+1] = {0};
char hmac_key[MAX_KEY_LEN+1] = {0};
int key_len = 0, orig_key_len = 0, hmac_key_len = 0, enc_mode;
int tmp_port = 0;
char dump_buf[CTX_DUMP_BUFSIZE];
fko_cli_options_t options;
memset(&options, 0x0, sizeof(fko_cli_options_t));
/* Initialize the log module */
log_new();
/* Handle command line
*/
config_init(&options, argc, argv);
#if HAVE_LIBFIU
/* Set any fault injection points early
*/
if(! enable_fault_injections(&options))
clean_exit(ctx, &options, key, &key_len, hmac_key,
&hmac_key_len, EXIT_FAILURE);
#endif
/* Handle previous execution arguments if required
*/
if(prev_exec(&options, argc, argv) != 1)
clean_exit(ctx, &options, key, &key_len, hmac_key,
&hmac_key_len, EXIT_FAILURE);
if(options.show_last_command)
clean_exit(ctx, &options, key, &key_len, hmac_key,
&hmac_key_len, EXIT_SUCCESS);
/* Intialize the context
*/
res = fko_new(&ctx);
if(res != FKO_SUCCESS)
{
errmsg("fko_new", res);
clean_exit(ctx, &options, key, &key_len, hmac_key,
&hmac_key_len, EXIT_FAILURE);
}
/* Display version info and exit.
*/
if(options.version)
{
fko_get_version(ctx, &version);
fprintf(stdout, "fwknop client %s, FKO protocol version %s\n",
MY_VERSION, version);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_SUCCESS);
}
/* Set client timeout
*/
if(options.fw_timeout >= 0)
{
res = fko_set_spa_client_timeout(ctx, options.fw_timeout);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_client_timeout", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
/* Set the SPA packet message type based on command line options
*/
res = set_message_type(ctx, &options);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_message_type", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
/* Adjust the SPA timestamp if necessary
*/
if(options.time_offset_plus > 0)
{
res = fko_set_timestamp(ctx, options.time_offset_plus);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_timestamp", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
if(options.time_offset_minus > 0)
{
res = fko_set_timestamp(ctx, -options.time_offset_minus);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_timestamp", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
if(options.server_command[0] != 0x0)
{
/* Set the access message to a command that the server will
* execute
*/
snprintf(access_buf, MAX_LINE_LEN, "%s%s%s",
options.allow_ip_str, ",", options.server_command);
}
else
{
/* Resolve the client's public facing IP address if requestesd.
* if this fails, consider it fatal.
*/
if (options.resolve_ip_http_https)
{
if(options.resolve_http_only)
{
if(resolve_ip_http(&options) < 0)
{
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
else
{
/* Default to HTTPS */
if(resolve_ip_https(&options) < 0)
{
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
}
/* Set a message string by combining the allow IP and the
* port/protocol. The fwknopd server allows no port/protocol
* to be specified as well, so in this case append the string
* "none/0" to the allow IP.
*/
if(set_access_buf(ctx, &options, access_buf) != 1)
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
res = fko_set_spa_message(ctx, access_buf);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_message", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
/* Set NAT access string
*/
if (options.nat_local || options.nat_access_str[0] != 0x0)
{
res = set_nat_access(ctx, &options, access_buf);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_nat_access_str", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
/* Set username
*/
if(options.spoof_user[0] != 0x0)
{
res = fko_set_username(ctx, options.spoof_user);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_username", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
/* Set up for using GPG if specified.
*/
if(options.use_gpg)
{
/* If use-gpg-agent was not specified, then remove the GPG_AGENT_INFO
* ENV variable if it exists.
*/
#ifndef WIN32
if(!options.use_gpg_agent)
unsetenv("GPG_AGENT_INFO");
#endif
res = fko_set_spa_encryption_type(ctx, FKO_ENCRYPTION_GPG);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_encryption_type", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
/* Set gpg path if necessary
*/
if(strlen(options.gpg_exe) > 0)
{
res = fko_set_gpg_exe(ctx, options.gpg_exe);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_gpg_exe", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
/* If a GPG home dir was specified, set it here. Note: Setting
* this has to occur before calling any of the other GPG-related
* functions.
*/
if(strlen(options.gpg_home_dir) > 0)
{
res = fko_set_gpg_home_dir(ctx, options.gpg_home_dir);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_gpg_home_dir", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
res = fko_set_gpg_recipient(ctx, options.gpg_recipient_key);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_gpg_recipient", res);
if(IS_GPG_ERROR(res))
log_msg(LOG_VERBOSITY_ERROR, "GPG ERR: %s", fko_gpg_errstr(ctx));
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
if(strlen(options.gpg_signer_key) > 0)
{
res = fko_set_gpg_signer(ctx, options.gpg_signer_key);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_gpg_signer", res);
if(IS_GPG_ERROR(res))
log_msg(LOG_VERBOSITY_ERROR, "GPG ERR: %s", fko_gpg_errstr(ctx));
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
res = fko_set_spa_encryption_mode(ctx, FKO_ENC_MODE_ASYMMETRIC);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_encryption_mode", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
if(options.encryption_mode && !options.use_gpg)
{
res = fko_set_spa_encryption_mode(ctx, options.encryption_mode);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_encryption_mode", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
/* Set Digest type.
*/
if(options.digest_type)
{
res = fko_set_spa_digest_type(ctx, options.digest_type);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_digest_type", res);
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
/* Acquire the necessary encryption/hmac keys
*/
if(get_keys(ctx, &options, key, &key_len, hmac_key, &hmac_key_len) != 1)
clean_exit(ctx, &options, key, &key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
orig_key_len = key_len;
if(options.encryption_mode == FKO_ENC_MODE_CBC_LEGACY_IV
&& key_len > 16)
{
log_msg(LOG_VERBOSITY_ERROR,
"WARNING: Encryption key in '-M legacy' mode must be <= 16 bytes");
log_msg(LOG_VERBOSITY_ERROR,
"long - truncating before sending SPA packet. Upgrading remote");
log_msg(LOG_VERBOSITY_ERROR,
"fwknopd is recommended.");
key_len = 16;
}
/* Finalize the context data (encrypt and encode the SPA data)
*/
res = fko_spa_data_final(ctx, key, key_len, hmac_key, hmac_key_len);
if(res != FKO_SUCCESS)
{
errmsg("fko_spa_data_final", res);
if(IS_GPG_ERROR(res))
log_msg(LOG_VERBOSITY_ERROR, "GPG ERR: %s", fko_gpg_errstr(ctx));
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
/* Display the context data.
*/
if (options.verbose || options.test)
{
res = dump_ctx_to_buffer(ctx, dump_buf, sizeof(dump_buf));
if (res == FKO_SUCCESS)
log_msg(LOG_VERBOSITY_NORMAL, "%s", dump_buf);
else
log_msg(LOG_VERBOSITY_WARNING, "Unable to dump FKO context: %s",
fko_errstr(res));
}
/* Save packet data payload if requested.
*/
if (options.save_packet_file[0] != 0x0)
write_spa_packet_data(ctx, &options);
/* SPA packet random destination port handling
*/
if (options.rand_port)
{
tmp_port = get_rand_port(ctx);
if(tmp_port < 0)
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
options.spa_dst_port = tmp_port;
}
/* If we are using one the "raw" modes (normally because
* we're going to spoof the SPA packet source IP), then select
* a random source port unless the source port is already set
*/
if ((options.spa_proto == FKO_PROTO_TCP_RAW
|| options.spa_proto == FKO_PROTO_UDP_RAW
|| options.spa_proto == FKO_PROTO_ICMP)
&& !options.spa_src_port)
{
tmp_port = get_rand_port(ctx);
if(tmp_port < 0)
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
options.spa_src_port = tmp_port;
}
res = send_spa_packet(ctx, &options);
if(res < 0)
{
log_msg(LOG_VERBOSITY_ERROR, "send_spa_packet: packet not sent.");
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
else
{
log_msg(LOG_VERBOSITY_INFO, "send_spa_packet: bytes sent: %i", res);
}
/* Run through a decode cycle in test mode (--DSS XXX: This test/decode
* portion should be moved elsewhere).
*/
if (options.test)
{
/************** Decoding now *****************/
/* Now we create a new context based on data from the first one.
*/
res = fko_get_spa_data(ctx, &spa_data);
if(res != FKO_SUCCESS)
{
errmsg("fko_get_spa_data", res);
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
/* Pull the encryption mode.
*/
res = fko_get_spa_encryption_mode(ctx, &enc_mode);
if(res != FKO_SUCCESS)
{
errmsg("fko_get_spa_encryption_mode", res);
if(fko_destroy(ctx) == FKO_ERROR_ZERO_OUT_DATA)
log_msg(LOG_VERBOSITY_ERROR,
"[*] Could not zero out sensitive data buffer.");
ctx = NULL;
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
/* If gpg-home-dir is specified, we have to defer decrypting if we
* use the fko_new_with_data() function because we need to set the
* gpg home dir after the context is created, but before we attempt
* to decrypt the data. Therefore we either pass NULL for the
* decryption key to fko_new_with_data() or use fko_new() to create
* an empty context, populate it with the encrypted data, set our
* options, then decode it.
*
* This also verifies the HMAC and truncates it if there are no
* problems.
*/
res = fko_new_with_data(&ctx2, spa_data, NULL,
0, enc_mode, hmac_key, hmac_key_len, options.hmac_type);
if(res != FKO_SUCCESS)
{
errmsg("fko_new_with_data", res);
if(fko_destroy(ctx2) == FKO_ERROR_ZERO_OUT_DATA)
log_msg(LOG_VERBOSITY_ERROR,
"[*] Could not zero out sensitive data buffer.");
ctx2 = NULL;
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
res = fko_set_spa_encryption_mode(ctx2, enc_mode);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_spa_encryption_mode", res);
if(fko_destroy(ctx2) == FKO_ERROR_ZERO_OUT_DATA)
log_msg(LOG_VERBOSITY_ERROR,
"[*] Could not zero out sensitive data buffer.");
ctx2 = NULL;
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
/* See if we are using gpg and if we need to set the GPG home dir.
*/
if(options.use_gpg)
{
if(strlen(options.gpg_home_dir) > 0)
{
res = fko_set_gpg_home_dir(ctx2, options.gpg_home_dir);
if(res != FKO_SUCCESS)
{
errmsg("fko_set_gpg_home_dir", res);
if(fko_destroy(ctx2) == FKO_ERROR_ZERO_OUT_DATA)
log_msg(LOG_VERBOSITY_ERROR,
"[*] Could not zero out sensitive data buffer.");
ctx2 = NULL;
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
}
}
/* Decrypt
*/
res = fko_decrypt_spa_data(ctx2, key, key_len);
if(res != FKO_SUCCESS)
{
errmsg("fko_decrypt_spa_data", res);
if(IS_GPG_ERROR(res)) {
/* we most likely could not decrypt the gpg-encrypted data
* because we don't have access to the private key associated
* with the public key we used for encryption. Since this is
* expected, return 0 instead of an error condition (so calling
* programs like the fwknop test suite don't interpret this as
* an unrecoverable error), but print the error string for
* debugging purposes. The test suite does run a series of
* tests that use a single key pair for encryption and
* authentication, so decryption become possible for these
* tests. */
log_msg(LOG_VERBOSITY_ERROR, "GPG ERR: %s\n%s", fko_gpg_errstr(ctx2),
"No access to recipient private key?");
}
if(fko_destroy(ctx2) == FKO_ERROR_ZERO_OUT_DATA)
log_msg(LOG_VERBOSITY_ERROR,
"[*] Could not zero out sensitive data buffer.");
ctx2 = NULL;
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_FAILURE);
}
res = dump_ctx_to_buffer(ctx2, dump_buf, sizeof(dump_buf));
if (res == FKO_SUCCESS)
log_msg(LOG_VERBOSITY_NORMAL, "\nDump of the Decoded Data\n%s", dump_buf);
else
log_msg(LOG_VERBOSITY_WARNING, "Unable to dump FKO context: %s", fko_errstr(res));
if(fko_destroy(ctx2) == FKO_ERROR_ZERO_OUT_DATA)
log_msg(LOG_VERBOSITY_ERROR,
"[*] Could not zero out sensitive data buffer.");
ctx2 = NULL;
}
clean_exit(ctx, &options, key, &orig_key_len,
hmac_key, &hmac_key_len, EXIT_SUCCESS);
return EXIT_SUCCESS; /* quiet down a gcc warning */
}
/* JNI interface: constructs arguments and calls main function
*/
jstring Java_biz_incomsystems_fwknop2_SendSPA_sendSPAPacket(JNIEnv* env,
jobject thiz)
{
fko_ctx_t ctx;
fwknop_options_t opts;
int res, hmac_str_len = 0;
short message_type;
short digest_type = FKO_DIGEST_SHA256;
short hmac_type = FKO_HMAC_SHA256;
int key_len, hmac_key_len;
char res_msg[MSG_BUFSIZE+1] = {0};
char spa_msg[MSG_BUFSIZE+1] = {0};
char nat_msg[MSG_BUFSIZE+1] = {0};
jstring ourSpa;
char *key_tmp[MAX_KEY_LEN+1] = {0}, *hmac_key_tmp[MAX_KEY_LEN+1] = {0};
LOGV("**** Init fwknop ****");
memset(&opts, 0, sizeof(fwknop_options_t));
/* Read the member values from the Java Object that called sendSPAPacket() method
*/
jclass c = (*env)->GetObjectClass(env,thiz);
jfieldID fid = (*env)->GetFieldID(env, c, "access_str", "Ljava/lang/String;");
jstring jaccess = (*env)->GetObjectField(env, thiz, fid);
const char *access_str = (*env)->GetStringUTFChars(env, jaccess, 0);
fid = (*env)->GetFieldID(env, c, "allowip_str", "Ljava/lang/String;");
jstring jallowip = (*env)->GetObjectField(env, thiz, fid);
const char *allowip_str = (*env)->GetStringUTFChars(env, jallowip, 0);
fid = (*env)->GetFieldID(env, c, "passwd_str", "Ljava/lang/String;");
jstring jpasswd = (*env)->GetObjectField(env, thiz, fid);
char *passwd_str = (*env)->GetStringUTFChars(env, jpasswd, 0);
fid = (*env)->GetFieldID(env, c, "passwd_b64", "Ljava/lang/String;");
jstring jpasswd_b64 = (*env)->GetObjectField(env, thiz, fid);
const char *passwd_b64 = (*env)->GetStringUTFChars(env, jpasswd_b64, 0);
fid = (*env)->GetFieldID(env, c, "digest_type", "Ljava/lang/String;");
jstring jdigest_type = (*env)->GetObjectField(env, thiz, fid);
char *set_digest_type = (*env)->GetStringUTFChars(env, jdigest_type, 0);
fid = (*env)->GetFieldID(env, c, "hmac_str", "Ljava/lang/String;");
jstring jhmac = (*env)->GetObjectField(env, thiz, fid);
char *hmac_str = (*env)->GetStringUTFChars(env, jhmac, 0);
fid = (*env)->GetFieldID(env, c, "hmac_b64", "Ljava/lang/String;");
jstring jhmac_b64 = (*env)->GetObjectField(env, thiz, fid);
const char *hmac_b64 = (*env)->GetStringUTFChars(env, jhmac_b64, 0);
fid = (*env)->GetFieldID(env, c, "hmac_type", "Ljava/lang/String;");
jstring jhmac_type = (*env)->GetObjectField(env, thiz, fid);
char *set_hmac_type = (*env)->GetStringUTFChars(env, jhmac_type, 0);
fid = (*env)->GetFieldID(env, c, "fw_timeout_str", "Ljava/lang/String;");
jstring jfwtimeout = (*env)->GetObjectField(env, thiz, fid);
const char *fw_timeout_str = (*env)->GetStringUTFChars(env, jfwtimeout, 0);
fid = (*env)->GetFieldID(env, c, "nat_access_str", "Ljava/lang/String;");
jstring jnat_access_str = (*env)->GetObjectField(env, thiz, fid);
const char *nat_access_str = (*env)->GetStringUTFChars(env, jnat_access_str, 0);
fid = (*env)->GetFieldID(env, c, "nat_local", "Ljava/lang/String;");
jstring jnat_local = (*env)->GetObjectField(env, thiz, fid);
const char *nat_local = (*env)->GetStringUTFChars(env, jnat_local, 0);
fid = (*env)->GetFieldID(env, c, "server_cmd_str", "Ljava/lang/String;");
jstring jserver_cmd = (*env)->GetObjectField(env, thiz, fid);
const char *server_cmd_str = (*env)->GetStringUTFChars(env, jserver_cmd, 0);
fid = (*env)->GetFieldID(env, c, "legacy", "Ljava/lang/String;");
jstring jlegacy = (*env)->GetObjectField(env, thiz, fid);
const char *legacy = (*env)->GetStringUTFChars(env, jlegacy, 0);
/* Sanity checks
*/
if(access_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing access string");
goto cleanup2;
}
if(allowip_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing allow IP");
goto cleanup2;
}
if(passwd_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing password");
goto cleanup2;
}
if(fw_timeout_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing firewall timeout value");
goto cleanup2;
}
if(hmac_str != NULL) {
hmac_str_len = (int)strlen(hmac_str);
}
key_len = (int)strlen(passwd_str);
if(legacy == NULL) {
sprintf(legacy, "false");
}
if(strcmp(hmac_b64, "true") == 0) {
hmac_str_len = fko_base64_decode( hmac_str,
(unsigned char *)hmac_key_tmp);
if(hmac_str_len > MAX_KEY_LEN || hmac_str_len < 0)
{
LOGV("[*] Invalid key length: '%d', must be in [1,%d]",
hmac_str_len, MAX_KEY_LEN);
goto cleanup2;
}
else
{
memcpy(hmac_str, hmac_key_tmp, hmac_str_len);
}
}
if(strcmp(passwd_b64, "true") == 0) {
LOGV("Detected key b64");
key_len = fko_base64_decode(passwd_str,
(unsigned char *)key_tmp);
if(key_len > MAX_KEY_LEN || key_len < 0)
{
LOGV( "[*] Invalid key length: '%d', must be in [1,%d]",
key_len, MAX_KEY_LEN);
goto cleanup2;
}
else
{
memcpy(passwd_str, key_tmp, key_len);
}
}
/* Using an HMAC is optional in the pre-rfc mode.
*/
if (server_cmd_str[0] != 0x0) {
message_type = FKO_COMMAND_MSG;
} else {
message_type = FKO_CLIENT_TIMEOUT_NAT_ACCESS_MSG;
}
/* Intialize the context
*/
res = fko_new(&ctx);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Unable to create FKO context", res));
goto cleanup2;
}
/* Set server command
*/
if (server_cmd_str[0] != 0x0) {
message_type = FKO_COMMAND_MSG;
fko_set_spa_message_type(ctx, message_type);
res = fko_set_spa_message(ctx, server_cmd_str);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting SPA request message", res));
goto cleanup;
}
} else {
/* Set client timeout
*/
res = fko_set_spa_client_timeout(ctx, atoi(fw_timeout_str));
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting FW timeout", res));
goto cleanup;
}
/* Set the spa message string
*/
snprintf(spa_msg, MSG_BUFSIZE, "%s,%s", allowip_str, access_str);
res = fko_set_spa_message(ctx, spa_msg);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting SPA request message", res));
goto cleanup;
}
}
/* Set the HMAC mode if necessary
*/
if (strcmp(legacy, "true") == 0) {
res = fko_set_spa_encryption_mode(ctx, FKO_ENC_MODE_CBC_LEGACY_IV);
if (key_len > 16) {
key_len = 16;
}
}
if (hmac_str_len > 0) {
if (strcmp(set_hmac_type, "MD5") == 0) {
hmac_type = FKO_HMAC_MD5;
} else if (strcmp(set_hmac_type, "SHA1") == 0) {
hmac_type = FKO_HMAC_SHA1;
} else if (strcmp(set_hmac_type, "SHA256") == 0) {
hmac_type = FKO_HMAC_SHA256;
} else if (strcmp(set_hmac_type, "SHA384") == 0) {
hmac_type = FKO_HMAC_SHA384;
} else if (strcmp(set_hmac_type, "SHA512") == 0) {
hmac_type = FKO_HMAC_SHA512;
}
res = fko_set_spa_hmac_type(ctx, hmac_type);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting SPA HMAC type", res));
goto cleanup;
}
}
/* Set Nat
*/
if (nat_access_str[0] != 0x0){
// if nat_access_str is not blank, push it into fko context
if (strncmp(nat_local, "true", 4) == 0) {
message_type = FKO_CLIENT_TIMEOUT_LOCAL_NAT_ACCESS_MSG;
fko_set_spa_message_type(ctx, message_type);
LOGV("Finished setting local-nat.");
}
res = fko_set_spa_nat_access(ctx, nat_access_str);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting NAT string", res));
goto cleanup;
}
}
LOGV("Setting digest type to %s.", set_digest_type);
if (strcmp(set_digest_type, "MD5") == 0) {
digest_type = FKO_HMAC_MD5;
} else if (strcmp(set_digest_type, "SHA1") == 0) {
digest_type = FKO_HMAC_SHA1;
} else if (strcmp(set_digest_type, "SHA256") == 0) {
digest_type = FKO_HMAC_SHA256;
} else if (strcmp(set_digest_type, "SHA384") == 0) {
digest_type = FKO_HMAC_SHA384;
} else if (strcmp(set_digest_type, "SHA512") == 0) {
digest_type = FKO_HMAC_SHA512;
}
res = fko_set_spa_digest_type(ctx, digest_type);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting SPA digest type", res));
goto cleanup;
}
LOGV("Finished setting digest type.");
/* Finalize the context data (Encrypt and encode).
*/
res = fko_spa_data_final(ctx, (char*)passwd_str,
key_len, (char *)hmac_str, hmac_str_len);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error generating SPA data", res));
goto cleanup;
}
LOGV("Finished finalize.");
res = fko_get_spa_data(ctx, &opts.spa_data);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error getting SPA data", res));
goto cleanup;
}
/* Generate the spa data packet
*/
ourSpa = (*env)->NewStringUTF(env, opts.spa_data);
cleanup:
/* Release the resources used by the fko context.
*/
fko_destroy(ctx);
cleanup2:
/* Release mem
*/
(*env)->ReleaseStringUTFChars(env, jaccess, access_str);
(*env)->ReleaseStringUTFChars(env, jallowip, allowip_str);
(*env)->ReleaseStringUTFChars(env, jpasswd, passwd_str);
(*env)->ReleaseStringUTFChars(env, jpasswd_b64, passwd_b64);
(*env)->ReleaseStringUTFChars(env, jdigest_type, set_digest_type);
(*env)->ReleaseStringUTFChars(env, jhmac, hmac_str);
(*env)->ReleaseStringUTFChars(env, jhmac_b64, hmac_b64);
(*env)->ReleaseStringUTFChars(env, jhmac_type, set_hmac_type);
(*env)->ReleaseStringUTFChars(env, jfwtimeout, fw_timeout_str);
(*env)->ReleaseStringUTFChars(env, jnat_access_str, nat_access_str);
(*env)->ReleaseStringUTFChars(env, jnat_local, nat_local);
return ourSpa;
}
/* JNI interface: constructs arguments and calls main function
*/
int fwknop_sendSPAPacket(
const char *allowip_str,
const char *access_str,
const char *destip_str,
const char *passwd_str,
const char *fw_timeout_str
)
{
fko_ctx_t ctx;
fwknop_options_t opts;
int res;
char res_msg[MSG_BUFSIZE+1] = {0};
char spa_msg[MSG_BUFSIZE+1] = {0};
printf("**** Init fwknop ****\n");
memset(&opts, 0, sizeof(fwknop_options_t));
/* Sanity checks
*/
if(access_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing access string");
goto cleanup2;
}
if(allowip_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing allow IP");
goto cleanup2;
}
if(destip_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing destination IP");
goto cleanup2;
}
if(passwd_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing password");
goto cleanup2;
}
if(fw_timeout_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing firewall timeout value");
goto cleanup2;
}
/* Set our spa server info
*/
opts.spa_server_str = (char*)destip_str;
opts.spa_dst_port = FKO_DEFAULT_PORT; /* Until we make this settable. */
/* Intialize the context
*/
res = fko_new(&ctx);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Unable to create FKO context", res));
goto cleanup2;
}
/* Set client timeout
*/
res = fko_set_spa_client_timeout(ctx, atoi(fw_timeout_str));
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting FW timeout", res));
goto cleanup;
}
/* Set the spa message string
*/
snprintf(spa_msg, MSG_BUFSIZE, "%s,%s", allowip_str, access_str);
res = fko_set_spa_message(ctx, spa_msg);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting SPA request message", res));
goto cleanup;
}
/* Finalize the context data (Encrypt and encode).
*/
res = fko_spa_data_final(ctx, (char*)passwd_str);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error generating SPA data", res));
goto cleanup;
}
res = fko_get_spa_data(ctx, &opts.spa_data);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error getting SPA data", res));
goto cleanup;
}
/* --DSS NOTE: At this point, we could just return the SPA data
* to the caller and use the Java network libs to send
* the packet and eliminate the spa_comm code altogether.
*/
/* Send the spa data packet
*/
res = send_spa_packet(&opts);
if (res < 0) {
sprintf(res_msg, "Error: send_spa_packet: packet not sent.");
} else if (res == 0) {
sprintf(res_msg, "Error: send_spa_packet: Empty packet sent.");
} else {
sprintf(res_msg, "SPA Packet sent successfully.");
}
cleanup:
/* Release the resources used by the fko context.
*/
fko_destroy(ctx);
cleanup2:
/* Log and return a string of success or error message.
* This can be enhanced semantically with codes.
*/
printf("%s\n", res_msg);
printf("**** Closing fwknop ****\n");
return res; // (*env)->NewStringUTF(env, res_msg);
}
static void
spa_encoded_msg_fuzzing(void)
{
fko_ctx_t decode_ctx = NULL;
int res = 0, pkt_id, require_success, require_digest, digest_type, msg_len;
int line_ctr = 0, spa_payload_ctr = 0;
FILE *fz = NULL;
char line[MAX_LINE_LEN] = {0};
char b64_encoded_msg[MAX_LINE_LEN] = {0};
unsigned char b64_decoded_msg[MAX_LINE_LEN] = {0};
/* fuzzing file contents (or from stdin) are formatted like this:
*
* <pkt_ID> <status: success|fail> <digest: yes|no> <digest type> <base64_SPA_payload>
*/
if ((fz = fopen("fuzz_spa_payloads", "r")) == NULL)
return;
while ((fgets(line, MAX_LINE_LEN, fz)) != NULL)
{
line_ctr++;
line[MAX_LINE_LEN-1] = '\0';
if (line[strlen(line)-1] == '\n')
line[strlen(line)-1] = '\0';
if(IS_EMPTY_LINE(line[0]))
continue;
if(sscanf(line, "%d %d %d %d %s", &pkt_id, &require_success,
&require_digest, &digest_type, b64_encoded_msg) != 5)
{
printf("[+] fuzzing parsing error at line: %d\n", line_ctr);
continue;
}
msg_len = fko_base64_decode(b64_encoded_msg, b64_decoded_msg);
spa_payload_ctr++;
fko_new(&decode_ctx);
if ((res = fko_set_encoded_data(decode_ctx, (char *) b64_decoded_msg,
msg_len, require_digest, digest_type)) != FKO_SUCCESS) {
printf("[-] pkt_id: %d, fko_set_encoded_data(): %s\n", pkt_id, fko_errstr(res));
}
res = fko_decode_spa_data(decode_ctx);
if (require_success) {
if (res != FKO_SUCCESS) {
printf("[-] pkt_id: %d, expected decode success but: fko_decode_spa_data(): %s\n",
pkt_id, fko_errstr(res));
}
} else {
if (res == FKO_SUCCESS) {
printf("[-] pkt_id: %d, expected decode failure but: fko_decode_spa_data(): %s\n",
pkt_id, fko_errstr(res));
}
}
fko_destroy(decode_ctx);
memset(line, 0x0, MAX_LINE_LEN);
memset(b64_encoded_msg, 0x0, MAX_LINE_LEN);
}
fclose(fz);
printf("[+] Sent %d SPA payloads through libfko encode/decode cycle...\n",
spa_payload_ctr);
return;
}
static void
test_loop(int new_ctx_flag, int destroy_ctx_flag)
{
fko_ctx_t ctx = NULL, decrypt_ctx = NULL;
int i, j;
char *spa_data = NULL, encode_buf[100], decode_buf[100];
printf("[+] test_loop(): %s, %s\n",
new_ctx_flag == NEW_CTX ? "NEW_CTX" : "NO_NEW_CTX",
destroy_ctx_flag == CTX_DESTROY ? "DESTROY_CTX" : "NO_DESTROY_CTX");
printf("fko_new(): %s\n", fko_errstr(fko_new(&ctx)));
fko_destroy(ctx);
ctx = NULL;
printf("fko_new(): %s\n", fko_errstr(fko_new(&ctx)));
spa_func_getset_int(&ctx, "fko_set_spa_client_timeout",
&fko_set_spa_client_timeout, "fko_get_spa_client_timeout",
&fko_get_spa_client_timeout, -F_INT, F_INT, 10,
new_ctx_flag, destroy_ctx_flag);
spa_func_getset_short(&ctx, "fko_set_spa_message_type",
&fko_set_spa_message_type, "fko_get_spa_message_type",
&fko_get_spa_message_type, FKO_COMMAND_MSG-F_INT,
FKO_LAST_MSG_TYPE+F_INT, FKO_ACCESS_MSG,
NO_DIGEST, new_ctx_flag, destroy_ctx_flag);
spa_func_int(&ctx, "fko_set_timestamp",
&fko_set_timestamp, -F_INT, F_INT, 10,
new_ctx_flag, destroy_ctx_flag);
for (i=0; i<FCN_CALLS; i++) {
printf("fko_set_spa_message(1.1.1.1,tcp/22): %s\n",
fko_errstr(fko_set_spa_message(ctx, "1.1.1.1,tcp/22")));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
for (i=0; i<FCN_CALLS; i++) {
printf("fko_set_spa_nat_access(1.2.3.4,1234): %s\n",
fko_errstr(fko_set_spa_nat_access(ctx, "1.2.3.4,1234")));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
for (i=0; i<FCN_CALLS; i++) {
printf("fko_set_username(someuser): %s\n",
fko_errstr(fko_set_username(ctx, "someuser")));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
spa_func_getset_short(&ctx, "fko_set_spa_encryption_type",
&fko_set_spa_encryption_type, "fko_get_spa_encryption_type",
&fko_get_spa_encryption_type, FKO_ENCRYPTION_INVALID_DATA-F_INT,
FKO_LAST_ENCRYPTION_TYPE+F_INT, FKO_ENCRYPTION_RIJNDAEL,
NO_DIGEST, new_ctx_flag, destroy_ctx_flag);
spa_func_getset_int(&ctx, "fko_set_spa_encryption_mode",
&fko_set_spa_encryption_mode, "fko_get_spa_encryption_mode",
&fko_get_spa_encryption_mode, FKO_ENC_MODE_UNKNOWN-F_INT,
FKO_LAST_ENC_MODE+F_INT, FKO_ENC_MODE_CBC,
new_ctx_flag, destroy_ctx_flag);
if (ENABLE_GPG_TESTS) {
for (i=0; i<FCN_CALLS; i++) {
printf("fko_set_spa_encryption_type(FKO_ENCRYPTION_GPG): %s\n",
fko_errstr(fko_set_spa_encryption_type(ctx, FKO_ENCRYPTION_GPG)));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
for (i=0; i<FCN_CALLS; i++) {
printf("fko_set_gpg_home_dir(/home/mbr/.gnupg): %s\n",
fko_errstr(fko_set_gpg_home_dir(ctx, "/home/mbr/.gnupg")));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
for (i=0; i<FCN_CALLS; i++) {
printf("fko_set_gpg_recipient(1234asdf): %s\n",
fko_errstr(fko_set_gpg_recipient(ctx, "1234asdf")));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
}
spa_func_getset_short(&ctx, "fko_set_spa_digest_type",
&fko_set_spa_digest_type, "fko_get_spa_digest_type",
&fko_get_spa_digest_type, FKO_DIGEST_INVALID_DATA-F_INT,
FKO_LAST_DIGEST_TYPE+F_INT, FKO_DEFAULT_DIGEST,
DO_DIGEST, new_ctx_flag, destroy_ctx_flag);
spa_func_getset_short(&ctx, "fko_set_raw_spa_digest_type",
&fko_set_spa_digest_type, "fko_get_raw_spa_digest_type",
&fko_get_spa_digest_type, FKO_DIGEST_INVALID_DATA-F_INT,
FKO_LAST_DIGEST_TYPE+F_INT, FKO_DEFAULT_DIGEST,
RAW_DIGEST, new_ctx_flag, destroy_ctx_flag);
spa_func_getset_short(&ctx, "fko_set_spa_hmac_type",
&fko_set_spa_hmac_type, "fko_get_spa_hmac_type",
&fko_get_spa_hmac_type, FKO_HMAC_INVALID_DATA-F_INT,
FKO_LAST_HMAC_MODE+F_INT, FKO_HMAC_SHA256,
NO_DIGEST, new_ctx_flag, destroy_ctx_flag);
printf("Trying encrypt / authenticate step with bogus key lengths...\n");
for (i=-100; i < 200; i += 10) {
for (j=-100; j < 200; j += 10) {
fko_spa_data_final(ctx, ENC_KEY, i, HMAC_KEY, j);
fko_spa_data_final(ctx, NULL, i, HMAC_KEY, j);
fko_spa_data_final(ctx, ENC_KEY, i, NULL, j);
fko_spa_data_final(ctx, NULL, i, NULL, j);
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, NO_PRINT);
spa_calls += 4;
}
}
for (i=0; i<FCN_CALLS; i++) {
printf("fko_spa_data_final(ENC_KEY, 16, HMAC_KEY, 16): %s\n",
fko_errstr(fko_spa_data_final(ctx, ENC_KEY, 16, HMAC_KEY, 16)));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
for (i=0; i<FCN_CALLS; i++) {
printf("fko_get_spa_data(): %s\n",
fko_errstr(fko_get_spa_data(ctx, &spa_data)));
printf(" SPA DATA: %s\n", spa_data == NULL ? "<NULL>" : spa_data);
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
printf("fko_new_with_data(): %s (data: %s)\n",
fko_errstr(fko_new_with_data(&decrypt_ctx, spa_data, NULL,
0, FKO_ENC_MODE_CBC, NULL, 0, FKO_HMAC_SHA256)), spa_data);
/* verify hmac, decrypt, and display ctx all together*/
for (i=0; i<FCN_CALLS; i++) {
display_ctx(decrypt_ctx);
printf("fko_verify_hmac() (1): %s\n",
fko_errstr(fko_verify_hmac(decrypt_ctx, HMAC_KEY, 16)));
printf("fko_decrypt_spa_data() (1): %s\n",
fko_errstr(fko_decrypt_spa_data(decrypt_ctx, ENC_KEY, 16)));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
/* now, separately verify hmac, decrypt, and display ctx */
for (i=0; i<FCN_CALLS; i++) {
printf("fko_verify_hmac() (2): %s\n",
fko_errstr(fko_verify_hmac(decrypt_ctx, HMAC_KEY, 16)));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
/* now decrypt */
for (i=0; i<FCN_CALLS; i++) {
printf("fko_decrypt_spa_data() (2): %s\n",
fko_errstr(fko_decrypt_spa_data(decrypt_ctx, ENC_KEY, 16)));
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
for (i=0; i<FCN_CALLS; i++) {
display_ctx(decrypt_ctx);
ctx_update(&ctx, new_ctx_flag, destroy_ctx_flag, DO_PRINT);
}
/* NULL tests */
fko_set_rand_value(ctx, NULL);
fko_set_rand_value(ctx, NULL);
fko_set_username(ctx, NULL);
fko_set_username(ctx, NULL);
fko_set_spa_message(ctx, NULL);
fko_set_spa_message(ctx, NULL);
fko_set_spa_nat_access(ctx, NULL);
fko_set_spa_nat_access(ctx, NULL);
fko_set_spa_server_auth(ctx, NULL);
fko_set_spa_server_auth(ctx, NULL);
fko_set_spa_data(ctx, NULL);
fko_set_spa_data(ctx, NULL);
spa_calls += 12;
for (i=0; i<FCN_CALLS; i++) {
fko_destroy(ctx);
ctx = NULL;
}
for (i=0; i<FCN_CALLS; i++) {
fko_destroy(decrypt_ctx);
decrypt_ctx = NULL;
}
/* exercise the base64 encode/decode wrapper
*/
fko_base64_encode((unsigned char *)ENC_KEY, encode_buf, 16);
fko_base64_decode(encode_buf, (unsigned char *)decode_buf);
/* call fko_errstr() across valid and invalid values
*/
for (i=-5; i < FKO_LAST_ERROR+5; i++) {
printf("libfko error (%d): %s\n", i, fko_errstr(i));
spa_calls++;
}
return;
}
static void
test_loop_compounded(void)
{
fko_ctx_t ctx = NULL, decrypt_ctx = NULL;
char *spa_data = NULL;
int i, j, k, l, res;
for (i=0; i<FCN_CALLS; i++) {
fko_new(&ctx);
res = fko_set_spa_client_timeout(ctx, i);
if (res != FKO_SUCCESS)
printf("fko_set_spa_client_timeout(): %s\n", fko_errstr(res));
for (j=-1; j<FKO_LAST_MSG_TYPE+1; j++) {
res = fko_set_spa_message_type(ctx, j);
if (res != FKO_SUCCESS)
printf("fko_set_spa_message_type(): %s\n", fko_errstr(res));
res = fko_set_timestamp(ctx, 100);
if (res != FKO_SUCCESS)
printf("fko_set_timestamp(): %s\n", fko_errstr(res));
fko_set_spa_message(ctx, "1.1.1.1,tcp/22");
res = fko_set_spa_message(ctx, "123.123.123.123,tcp/22");
if (res != FKO_SUCCESS)
printf("fko_set_spa_message(): %s\n", fko_errstr(res));
res = fko_set_spa_nat_access(ctx, "1.2.3.4,1234");
if (res != FKO_SUCCESS)
printf("fko_set_spa_nat_access(): %s\n", fko_errstr(res));
res = fko_set_username(ctx, "someuser");
if (res != FKO_SUCCESS)
printf("fko_set_username(): %s\n", fko_errstr(res));
res = fko_set_spa_server_auth(ctx, "passwd");
if (res != FKO_SUCCESS)
printf("fko_set_spa_server_auth(): %s\n", fko_errstr(res));
res = fko_set_spa_hmac_type(ctx, FKO_HMAC_SHA256);
if (res != FKO_SUCCESS)
printf("fko_set_spa_hmac_type(): %s\n", fko_errstr(res));
for (k=-4; k<=16; k+=4) {
for (l=-4; l<=16; l+=4) {
res = fko_spa_data_final(ctx, ENC_KEY, k, HMAC_KEY, l);
if (res == FKO_SUCCESS) {
res = fko_get_spa_data(ctx, &spa_data);
if (res == FKO_SUCCESS) {
res = fko_new_with_data(&decrypt_ctx, spa_data, NULL,
0, FKO_ENC_MODE_CBC, HMAC_KEY, l, FKO_HMAC_SHA256);
if (res == FKO_SUCCESS) {
res = fko_decrypt_spa_data(decrypt_ctx, ENC_KEY, k);
if (res != FKO_SUCCESS)
printf("fko_decrypt_spa_data(): %s\n", fko_errstr(res));
fko_destroy(decrypt_ctx);
decrypt_ctx = NULL;
spa_calls += 13;
spa_compounded_calls += 13;
} else {
printf("fko_new_with_data(): %s\n", fko_errstr(res));
}
} else {
printf("fko_get_spa_data(): %s\n", fko_errstr(res));
}
} else {
printf("fko_spa_data_final(): %s\n", fko_errstr(res));
}
}
}
}
fko_destroy(ctx);
ctx = NULL;
spa_calls += 3;
spa_compounded_calls += 3;
}
}
wxString Config::gen_SPA(wxString ip_resolver_url, wxString gpgEngine, wxString gpgHomeFolder, bool debug)
{
CURLcode curl_Res;
fko_ctx_t ctx;
fwknop_options_t opts;
int key_len = 0;
int res;
int hmac_str_len = 0;
short message_type = FKO_CLIENT_TIMEOUT_NAT_ACCESS_MSG;
short digest_type = FKO_DIGEST_SHA256;
short hmac_type = FKO_HMAC_SHA256;
char key_str[129] = {0}, hmac_str[129] = {0};
char spa_msg[256] = {0};
// char spa_buf[4096] = {0};
// char * spa_buf_ptr;
// char crypt_buf[4096] = {0};
char nat_access_str[25] = {0};
// char * hmac_buf;
// char * spa_digest_ptr;
memset(&opts, 0, sizeof(fwknop_options_t));
if (this->KEY.IsEmpty() && !this->USE_GPG_CRYPT)
return _("Key cannot be blank!");
wxBusyInfo wait(_("Please wait, working..."));
if (this->SERVER_PORT.CmpNoCase(wxT("random")) == 0)
{
srand((int)wxGetLocalTime());
this->SERVER_PORT.Empty();
this->SERVER_PORT << (rand()%55535 + 10000); // do this better, this isn't a horribly good random function
}
if (this->ACCESS_IP.CmpNoCase(wxT("Source IP")) == 0)
this->ACCESS_IP = wxT("0.0.0.0");
else if (this->ACCESS_IP.CmpNoCase(wxT("Resolve IP")) == 0)
{
std::ostringstream oss;
curl_Res = curl_read(std::string(ip_resolver_url.mb_str()), oss);
if (curl_Res == CURLE_OK)
{
wxString result_tmp = wxString::FromUTF8(oss.str().c_str());
wxRegEx findIP( wxT("(([0-9]{1}|[0-9]{2}|[0-1][0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}([0-9]{1}|[0-9]{2}|[0-1][0-9]{2}|2[0-4][0-9]|25[0-5])"));
if (!findIP.Matches(result_tmp))
return _("Unable to resolve our IP!");
this->ACCESS_IP = findIP.GetMatch(result_tmp);
} else
return _("Libcurl returned the error: ") + wxString::FromUTF8(curl_easy_strerror(curl_Res));
} //end resolve ip
if (fko_new(&ctx) != FKO_SUCCESS)
return _("Could not get new FKO context");
if (USE_GPG_CRYPT) {
fko_set_spa_encryption_type(ctx, FKO_ENCRYPTION_GPG);
fko_set_gpg_exe(ctx, gpgEngine.mb_str());
fko_set_gpg_home_dir(ctx, gpgHomeFolder.mb_str());
fko_set_gpg_recipient(ctx, GPG_CRYPT_ID.mb_str());
if (GPG_SIG_ID.CmpNoCase(_("None")) != 0)
fko_set_gpg_signer(ctx, GPG_SIG_ID.mb_str());
fko_set_spa_encryption_mode(ctx, FKO_ENC_MODE_ASYMMETRIC);
} else {
if (this->KEY_BASE64)
{
key_len = fko_base64_decode(this->KEY.mb_str(), (unsigned char *)key_str);
} else {
strncpy(key_str, (const char*)this->KEY.mb_str(wxConvUTF8), 128);
key_len = (int)strlen(key_str);
}
}
if (this->HMAC_BASE64)
{
hmac_str_len = fko_base64_decode(this->HMAC.mb_str(), (unsigned char *)hmac_str);
} else {
strncpy(hmac_str, (const char*)this->HMAC.mb_str(wxConvUTF8), 128);
hmac_str_len = (int)strlen(hmac_str);
}
if (MESS_TYPE.CmpNoCase(wxT("Server Command")) == 0)
{
message_type = FKO_COMMAND_MSG;
if (fko_set_spa_message_type(ctx, message_type) != FKO_SUCCESS)
return _("Could not set message type");
snprintf(spa_msg, 256, "%s,%s", (const char*)this->ACCESS_IP.mb_str(wxConvUTF8), (const char*)this->SERVER_CMD.mb_str(wxConvUTF8));
res = fko_set_spa_message(ctx, spa_msg);
if (res != FKO_SUCCESS)
return _("Could not set command message");
} else {
if (fko_set_spa_client_timeout(ctx, wxAtoi(this->SERVER_TIMEOUT)) != FKO_SUCCESS)
return _("Could not set SPA timeout");
snprintf(spa_msg, 256, "%s,%s", (const char*)this->ACCESS_IP.mb_str(wxConvUTF8), (const char*)this->PORTS.mb_str(wxConvUTF8));
if (fko_set_spa_message(ctx, spa_msg) != FKO_SUCCESS)
return _("Could not set SPA Message");
}
if (this->LEGACY) { // technically should trim hmac keys
if (fko_set_spa_encryption_mode(ctx, FKO_ENC_MODE_CBC_LEGACY_IV) != FKO_SUCCESS)
return _("Could not set Legacy mode.");
}
if (!this->HMAC.IsEmpty()){
if (this->HMAC_TYPE.CmpNoCase(wxT("MD5"))==0)
hmac_type = FKO_HMAC_MD5;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA1"))==0)
hmac_type = FKO_HMAC_SHA1;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA256"))==0)
hmac_type = FKO_HMAC_SHA256;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA384"))==0)
hmac_type = FKO_HMAC_SHA384;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA512"))==0)
hmac_type = FKO_HMAC_SHA512;
if (fko_set_spa_hmac_type(ctx, hmac_type) != FKO_SUCCESS)
return _("Could not set HMAC type.");
}
if (this->MESS_TYPE.CmpNoCase(wxT("Nat Access")) == 0)
{
sprintf(nat_access_str, "%s,%s", (const char*)this->NAT_IP.mb_str(wxConvUTF8), (const char*)this->NAT_PORT.mb_str(wxConvUTF8));
if (fko_set_spa_nat_access(ctx, nat_access_str) != FKO_SUCCESS)
return _("Could not set nat access string.");
} else if (this->MESS_TYPE.CmpNoCase(wxT("Local Nat Access")) == 0) {
message_type = FKO_CLIENT_TIMEOUT_LOCAL_NAT_ACCESS_MSG;
if (fko_set_spa_message_type(ctx, message_type) != FKO_SUCCESS)
return _("Chould not set message type");
sprintf(nat_access_str, "%s,%s", (const char*)this->SERVER_IP.mb_str(wxConvUTF8), (const char*)this->NAT_PORT.mb_str(wxConvUTF8));
if (fko_set_spa_nat_access(ctx, nat_access_str) != FKO_SUCCESS)
return _("Could not set nat access string.");
}
if (this->DIGEST_TYPE.CmpNoCase(wxT("MD5"))==0)
digest_type = FKO_DIGEST_MD5;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA1"))==0)
digest_type = FKO_DIGEST_SHA1;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA256"))==0)
digest_type = FKO_DIGEST_SHA256;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA384"))==0)
digest_type = FKO_DIGEST_SHA384;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA512"))==0)
digest_type = FKO_DIGEST_SHA512;
if (fko_set_spa_digest_type(ctx, digest_type) != FKO_SUCCESS)
return _("Could not set SPA digest type.");
if (fko_spa_data_final(ctx, key_str, key_len, hmac_str, hmac_str_len) != FKO_SUCCESS)
return _("Could not generate SPA data.");
if (fko_get_spa_data(ctx, &opts.spa_data) != FKO_SUCCESS)
return _("Could not retrieve SPA data.");
// if (!USE_GPG_CRYPT) {
this->SPA_STRING = wxString::FromUTF8(opts.spa_data);
/*} else { //could retain this for libfko without gpg support
fko_get_encoded_data(ctx, &spa_buf_ptr);
fko_get_spa_digest(ctx, &spa_digest_ptr);
sprintf(spa_buf,"%s:%s", spa_buf_ptr, spa_digest_ptr);
ourGPG->encryptAndSign(GPG_CRYPT_ID, GPG_SIG_ID, spa_buf, crypt_buf);
fko_set_spa_data(ctx, crypt_buf);
fko_set_spa_hmac(ctx, hmac_str, hmac_str_len);
fko_get_spa_hmac(ctx, &hmac_buf);
strcat(crypt_buf, hmac_buf);
this->SPA_STRING = wxString::FromUTF8(crypt_buf + 2);
}*/
if (debug) {
wxTextEntryDialog *debugMessage = new wxTextEntryDialog(NULL, _("Debug info"), _("Debug info"), "Source IP: " + this->ACCESS_IP +"\n" + "SPA String: " + this->SPA_STRING, wxOK | wxTE_MULTILINE );
debugMessage->SetSize(620, 320);
debugMessage->ShowModal();
debugMessage->Destroy();
}
return _("Success");
}
wxString Config::gen_SPA(wxString ip_resolver_url)
{
CURLcode curl_Res;
fko_ctx_t ctx;
fwknop_options_t opts;
int key_len, res;
int hmac_str_len = 0;
short message_type = FKO_CLIENT_TIMEOUT_NAT_ACCESS_MSG;
short digest_type = FKO_DIGEST_SHA256;
short hmac_type = FKO_HMAC_SHA256;
char key_str[129] = {0}, hmac_str[129] = {0};
char spa_msg[256] = {0};
char debug_buf[4096] = {0};
char nat_access_str[25] = {0};
memset(&opts, 0, sizeof(fwknop_options_t));
if (this->KEY.IsEmpty())
return _("Key cannot be blank!");
wxBusyInfo wait(_("Please wait, working..."));
if (this->SERVER_PORT.CmpNoCase(wxT("random")) == 0)
{
srand((int)wxGetLocalTime());
this->SERVER_PORT.Empty();
this->SERVER_PORT << (rand()%55535 + 10000); // do this better, this isn't a horribly good random function
}
if (this->ACCESS_IP.CmpNoCase(wxT("Source IP")) == 0)
this->ACCESS_IP = wxT("0.0.0.0");
else if (this->ACCESS_IP.CmpNoCase(wxT("Resolve IP")) == 0)
{
std::ostringstream oss;
curl_Res = curl_read(std::string(ip_resolver_url.mb_str()), oss); //Eventually make this a user definable service.
if (curl_Res == CURLE_OK)
{
wxString result_tmp = wxString::FromUTF8(oss.str().c_str());
wxRegEx findIP( wxT("(([0-9]{1}|[0-9]{2}|[0-1][0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}([0-9]{1}|[0-9]{2}|[0-1][0-9]{2}|2[0-4][0-9]|25[0-5])"));
if (!findIP.Matches(result_tmp))
return _("Unable to resolve our IP!");
this->ACCESS_IP = findIP.GetMatch(result_tmp);
} else
return _("Libcurl returned the error: ") + wxString::FromUTF8(curl_easy_strerror(curl_Res));
} //end resolve ip
if (this->KEY_BASE64)
{
key_len = fko_base64_decode(this->KEY.mb_str(), (unsigned char *)key_str);
} else {
strncpy(key_str, (const char*)this->KEY.mb_str(wxConvUTF8), 128);
key_len = (int)strlen(key_str);
}
if (this->HMAC_BASE64)
{
hmac_str_len = fko_base64_decode(this->HMAC.mb_str(), (unsigned char *)hmac_str);
} else {
strncpy(hmac_str, (const char*)this->HMAC.mb_str(wxConvUTF8), 128);
hmac_str_len = (int)strlen(hmac_str);
}
if (fko_new(&ctx) != FKO_SUCCESS)
return _("Could not get new FKO context");
if (MESS_TYPE.CmpNoCase(wxT("Server Command")) == 0)
{
message_type = FKO_COMMAND_MSG;
if (fko_set_spa_message_type(ctx, message_type) != FKO_SUCCESS)
return _("Could not set message type");
snprintf(spa_msg, 256, "%s,%s", (const char*)this->ACCESS_IP.mb_str(wxConvUTF8), (const char*)this->SERVER_CMD.mb_str(wxConvUTF8));
res = fko_set_spa_message(ctx, spa_msg);
if (res != FKO_SUCCESS)
return _("Could not set command message");
} else {
if (fko_set_spa_client_timeout(ctx, wxAtoi(this->SERVER_TIMEOUT)) != FKO_SUCCESS)
return _("Could not set SPA timeout");
snprintf(spa_msg, 256, "%s,%s", (const char*)this->ACCESS_IP.mb_str(wxConvUTF8), (const char*)this->PORTS.mb_str(wxConvUTF8));
if (fko_set_spa_message(ctx, spa_msg) != FKO_SUCCESS)
return _("Could not set SPA Message");
}
if (this->LEGACY) { // technically should trim hmac keys
if (fko_set_spa_encryption_mode(ctx, FKO_ENC_MODE_CBC_LEGACY_IV) != FKO_SUCCESS)
return _("Could not set Legacy mode.");
}
if (!this->HMAC.IsEmpty()){
if (this->HMAC_TYPE.CmpNoCase(wxT("MD5"))==0)
hmac_type = FKO_HMAC_MD5;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA1"))==0)
hmac_type = FKO_HMAC_SHA1;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA256"))==0)
hmac_type = FKO_HMAC_SHA256;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA384"))==0)
hmac_type = FKO_HMAC_SHA384;
else if (this->HMAC_TYPE.CmpNoCase(wxT("SHA512"))==0)
hmac_type = FKO_HMAC_SHA512;
if (fko_set_spa_hmac_type(ctx, hmac_type) != FKO_SUCCESS)
return _("Could not set HMAC type.");
}
if (this->MESS_TYPE.CmpNoCase(wxT("Nat Access")) == 0)
{
sprintf(nat_access_str, "%s,%s", (const char*)this->NAT_IP.mb_str(wxConvUTF8), (const char*)this->NAT_PORT.mb_str(wxConvUTF8));
if (fko_set_spa_nat_access(ctx, nat_access_str) != FKO_SUCCESS)
return _("Could not set nat access string.");
} else if (this->MESS_TYPE.CmpNoCase(wxT("Local Nat Access")) == 0) {
message_type = FKO_CLIENT_TIMEOUT_LOCAL_NAT_ACCESS_MSG;
if (fko_set_spa_message_type(ctx, message_type) != FKO_SUCCESS)
return _("Chould not set message type");
sprintf(nat_access_str, "%s,%s", (const char*)this->SERVER_IP.mb_str(wxConvUTF8), (const char*)this->NAT_PORT.mb_str(wxConvUTF8));
if (fko_set_spa_nat_access(ctx, nat_access_str) != FKO_SUCCESS)
return _("Could not set nat access string.");
}
if (this->DIGEST_TYPE.CmpNoCase(wxT("MD5"))==0)
digest_type = FKO_DIGEST_MD5;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA1"))==0)
digest_type = FKO_DIGEST_SHA1;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA256"))==0)
digest_type = FKO_DIGEST_SHA256;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA384"))==0)
digest_type = FKO_DIGEST_SHA384;
else if (this->DIGEST_TYPE.CmpNoCase(wxT("SHA512"))==0)
digest_type = FKO_DIGEST_SHA512;
if (fko_set_spa_digest_type(ctx, digest_type) != FKO_SUCCESS)
return _("Could not set SPA digest type.");
if (fko_spa_data_final(ctx, key_str, key_len, hmac_str, hmac_str_len) != FKO_SUCCESS)
return _("Could not generate SPA data.");
if (fko_get_spa_data(ctx, &opts.spa_data) != FKO_SUCCESS)
return _("Could not retrieve SPA data.");
//dump_ctx_to_buffer(ctx, debug_buf, sizeof(debug_buf));
this->SPA_STRING = wxString::FromUTF8(opts.spa_data);
return _("Success");
}
/* JNI interface: constructs arguments and calls main function
*/
jstring Java_com_max2idea_android_fwknop_Fwknop_sendSPAPacket(JNIEnv* env,
jobject thiz)
{
fko_ctx_t ctx;
fwknop_options_t opts;
int res, hmac_str_len = 0;
char res_msg[MSG_BUFSIZE+1] = {0};
char spa_msg[MSG_BUFSIZE+1] = {0};
LOGV("**** Init fwknop ****");
memset(&opts, 0, sizeof(fwknop_options_t));
/* Read the member values from the Java Object that called sendSPAPacket() method
*/
jclass c = (*env)->GetObjectClass(env, thiz);
jfieldID fid = (*env)->GetFieldID(env, c, "access_str", "Ljava/lang/String;");
jstring jaccess = (*env)->GetObjectField(env, thiz, fid);
const char *access_str = (*env)->GetStringUTFChars(env, jaccess, 0);
fid = (*env)->GetFieldID(env, c, "allowip_str", "Ljava/lang/String;");
jstring jallowip = (*env)->GetObjectField(env, thiz, fid);
const char *allowip_str = (*env)->GetStringUTFChars(env, jallowip, 0);
fid = (*env)->GetFieldID(env, c, "destip_str", "Ljava/lang/String;");
jstring jdestip = (*env)->GetObjectField(env, thiz, fid);
const char *destip_str = (*env)->GetStringUTFChars(env, jdestip, 0);
fid = (*env)->GetFieldID(env, c, "passwd_str", "Ljava/lang/String;");
jstring jpasswd = (*env)->GetObjectField(env, thiz, fid);
const char *passwd_str = (*env)->GetStringUTFChars(env, jpasswd, 0);
fid = (*env)->GetFieldID(env, c, "hmac_str", "Ljava/lang/String;");
jstring jhmac = (*env)->GetObjectField(env, thiz, fid);
const char *hmac_str = (*env)->GetStringUTFChars(env, jhmac, 0);
fid = (*env)->GetFieldID(env, c, "fw_timeout_str", "Ljava/lang/String;");
jstring jfwtimeout = (*env)->GetObjectField(env, thiz, fid);
const char *fw_timeout_str = (*env)->GetStringUTFChars(env, jfwtimeout, 0);
/* Sanity checks
*/
if(access_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing access string");
goto cleanup2;
}
if(allowip_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing allow IP");
goto cleanup2;
}
if(destip_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing destination IP");
goto cleanup2;
}
if(passwd_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing password");
goto cleanup2;
}
if(fw_timeout_str == NULL) {
sprintf(res_msg, "Error: Invalid or missing firewall timeout value");
goto cleanup2;
}
/* Using an HMAC is optional (currently)
*/
if(hmac_str != NULL) {
hmac_str_len = (int)strlen(hmac_str);
}
/* Set our spa server info
*/
opts.spa_server_str = (char*)destip_str;
opts.spa_dst_port = FKO_DEFAULT_PORT; /* Until we make this settable. */
/* Intialize the context
*/
res = fko_new(&ctx);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Unable to create FKO context", res));
goto cleanup2;
}
/* Set client timeout
*/
res = fko_set_spa_client_timeout(ctx, atoi(fw_timeout_str));
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting FW timeout", res));
goto cleanup;
}
/* Set the spa message string
*/
snprintf(spa_msg, MSG_BUFSIZE, "%s,%s", allowip_str, access_str);
res = fko_set_spa_message(ctx, spa_msg);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting SPA request message", res));
goto cleanup;
}
/* Set the HMAC mode if necessary
*/
if (hmac_str_len > 0) {
res = fko_set_spa_hmac_type(ctx, FKO_DEFAULT_HMAC_MODE);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error setting SPA HMAC type", res));
goto cleanup;
}
}
/* Finalize the context data (Encrypt and encode).
*/
res = fko_spa_data_final(ctx, (char*)passwd_str,
(int)strlen(passwd_str), (char *)hmac_str, hmac_str_len);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error generating SPA data", res));
goto cleanup;
}
res = fko_get_spa_data(ctx, &opts.spa_data);
if (res != FKO_SUCCESS) {
strcpy(res_msg, fko_errmsg("Error getting SPA data", res));
goto cleanup;
}
/* --DSS NOTE: At this point, we could just return the SPA data
* to the caller and use the Java network libs to send
* the packet and eliminate the spa_comm code altogether.
*/
/* Send the spa data packet
*/
res = send_spa_packet(&opts);
if (res < 0) {
sprintf(res_msg, "Error: send_spa_packet: packet not sent.");
} else if (res == 0) {
sprintf(res_msg, "Error: send_spa_packet: Empty packet sent.");
} else {
sprintf(res_msg, "SPA Packet sent successfully.");
}
cleanup:
/* Release the resources used by the fko context.
*/
fko_destroy(ctx);
cleanup2:
/* Release mem
*/
(*env)->ReleaseStringUTFChars(env, jaccess, access_str);
(*env)->ReleaseStringUTFChars(env, jallowip, allowip_str);
(*env)->ReleaseStringUTFChars(env, jdestip, destip_str);
(*env)->ReleaseStringUTFChars(env, jpasswd, passwd_str);
(*env)->ReleaseStringUTFChars(env, jhmac, hmac_str);
(*env)->ReleaseStringUTFChars(env, jfwtimeout, fw_timeout_str);
/* Log and return a string of success or error message.
* This can be enhanced semantically with codes.
*/
LOGV("%s", res_msg);
return (*env)->NewStringUTF(env, res_msg);
}
