static void *
check_tx (void *vprocessor)
{
CcnetProcessor *processor = vprocessor;
USE_PRIV;
char *user = NULL;
char *repo_id = priv->repo_id;
if (!seaf_repo_manager_repo_exists (seaf->repo_mgr, repo_id)) {
priv->rsp_code = g_strdup(SC_BAD_REPO);
priv->rsp_msg = g_strdup(SS_BAD_REPO);
goto out;
}
if (decrypt_token (processor) < 0) {
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
goto out;
}
user = seaf_repo_manager_get_email_by_token (
seaf->repo_mgr, repo_id, priv->token);
if (!user) {
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
goto out;
}
if (priv->type == CHECK_TX_TYPE_UPLOAD &&
seaf_quota_manager_check_quota (seaf->quota_mgr, repo_id) < 0) {
priv->rsp_code = g_strdup(SC_QUOTA_FULL);
priv->rsp_msg = g_strdup(SS_QUOTA_FULL);
goto out;
}
char *perm = seaf_repo_manager_check_permission (seaf->repo_mgr,
repo_id, user, NULL);
if (!perm ||
(strcmp (perm, "r") == 0 && priv->type == CHECK_TX_TYPE_UPLOAD))
{
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
g_free (perm);
goto out;
}
g_free (perm);
get_branch_head (processor);
out:
g_free (user);
return vprocessor;
}
static int32_t
test_wrap(struct client *c1, int32_t hc1, struct client *c2, int32_t hc2,
int conf)
{
krb5_data msg, wrapped, out;
int32_t val;
msg.data = "foo";
msg.length = 3;
krb5_data_zero(&wrapped);
krb5_data_zero(&out);
val = encrypt_token(c1, hc1, conf, &msg, &wrapped);
if (val) {
warnx("encrypt_token failed to host: %s", c1->moniker);
return val;
}
val = decrypt_token(c2, hc2, conf, &wrapped, &out);
if (val) {
krb5_data_free(&wrapped);
warnx("decrypt_token failed to host: %s", c2->moniker);
return val;
}
if (msg.length != out.length) {
warnx("decrypted'ed token have wrong length (%lu != %lu)",
(unsigned long)msg.length, (unsigned long)out.length);
val = GSMERR_ERROR;
} else if (memcmp(msg.data, out.data, msg.length) != 0) {
warnx("decryptd'ed token have wrong data");
val = GSMERR_ERROR;
}
krb5_data_free(&wrapped);
krb5_data_free(&out);
return val;
}
static void *
check_tx (void *vprocessor)
{
CcnetProcessor *processor = vprocessor;
USE_PRIV;
char *user = NULL;
char *repo_id = priv->repo_id;
if (!seaf_repo_manager_repo_exists (seaf->repo_mgr, repo_id)) {
priv->rsp_code = g_strdup(SC_BAD_REPO);
priv->rsp_msg = g_strdup(SS_BAD_REPO);
goto out;
}
if (decrypt_token (processor) < 0) {
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
goto out;
}
user = seaf_repo_manager_get_email_by_token (
seaf->repo_mgr, repo_id, priv->token);
if (!user) {
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
goto out;
}
if (priv->type == CHECK_TX_TYPE_UPLOAD &&
seaf_quota_manager_check_quota (seaf->quota_mgr, repo_id) < 0) {
priv->rsp_code = g_strdup(SC_QUOTA_FULL);
priv->rsp_msg = g_strdup(SS_QUOTA_FULL);
goto out;
}
char *perm = seaf_repo_manager_check_permission (seaf->repo_mgr,
repo_id, user, NULL);
if (!perm ||
(strcmp (perm, "r") == 0 && priv->type == CHECK_TX_TYPE_UPLOAD))
{
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
g_free (perm);
goto out;
}
g_free (perm);
/* Record the (token, email, <peer info>) information, <peer info> may
* include peer_id, peer_ip, peer_name, etc.
*/
if (!seaf_repo_manager_token_peer_info_exists (seaf->repo_mgr, priv->token))
seaf_repo_manager_add_token_peer_info (seaf->repo_mgr,
priv->token,
processor->peer_id,
priv->peer_addr,
priv->peer_name,
(gint64)time(NULL));
else
seaf_repo_manager_update_token_peer_info (seaf->repo_mgr,
priv->token,
priv->peer_addr,
(gint64)time(NULL));
get_branch_head (processor);
out:
g_free (user);
return vprocessor;
}
int main (int argc, char *argv[]){
int sock, newsock;
struct sockaddr_storage client_addr;
socklen_t sin_size;
char s[INET6_ADDRSTRLEN];
RSA *decrypt, *sign;
decrypt = NULL;
sign = NULL;
int retval = SIBYL_SUCCESS;
char *dir = NULL;
char *ip = NULL;
char *port = NULL;
char *decr_namefile = NULL;
char *sign_namefile = NULL;
dir = (char *)calloc(_POSIX_PATH_MAX + 1, sizeof(char));
ip = (char *)calloc(17 + 1, sizeof(char));
port = (char *)calloc(10, sizeof(char));
decr_namefile = (char *)calloc(_POSIX_PATH_MAX + 1, sizeof(char));
sign_namefile = (char *)calloc(_POSIX_PATH_MAX + 1, sizeof(char));
if(dir == NULL || ip == NULL || port == NULL ||
decr_namefile == NULL || sign_namefile == NULL){
D("Malloc");
retval = SIBYL_OSERR;
goto FREE;
}
strncpy(dir, SIBYL_DIR, _POSIX_PATH_MAX);
strncpy(port, SIBYL_PORT, 9);
strncpy(decr_namefile, SIBYL_DECR_KEY, _POSIX_PATH_MAX);
strncpy(sign_namefile, SIBYL_SIGN_KEY, _POSIX_PATH_MAX);
/* Read options */
int c;
while((c = getopt(argc, argv, SIBYL_SRV_OPTS)) != -1){
if(optarg == NULL)
c = 'h';
switch(c){
case 'd':
strncpy(decr_namefile,
optarg,
_POSIX_PATH_MAX);
break;
case 's':
strncpy(sign_namefile,
optarg,
_POSIX_PATH_MAX);
break;
case 'p':
strncpy(port,
optarg,
9);
break;
case 'i':
strncpy(ip,
optarg,
_POSIX_PATH_MAX);
break;
case 'D':
strncpy(dir,
optarg,
_POSIX_PATH_MAX);
break;
case 'h':
default:
printf("Usage: %s -d decrypt -s sign -i IP -p port -D dir\n"
" -d decrypt: decrypt private key (default: decrypt)\n"
" -s sign: sign private key (default: sign)\n"
" -i IP: IP where the server will listen (default: localhost)\n"
" -p port: port where the server will listen (default: 9999)\n"
" -D dir: directory where the private keys are stored "
"(default: /etc/sibyl)\n"
" -h: shows this help text\n", argv[0]);
exit(1);
}
}
/* Read private keys */
retval = read_keys(&decrypt,
decr_namefile,
&sign,
sign_namefile,
dir);
if(retval != SIBYL_SUCCESS)
goto FREE;
D("Private keys read");
/* Start server */
retval = start_server(&sock,
ip,
port);
if(retval != SIBYL_SUCCESS){
goto FREE;
}
D("Server started\n");
while(1){
/* Accept connection */
sin_size = sizeof client_addr;
newsock = accept(sock,
(struct sockaddr *)&client_addr,
&sin_size);
if (newsock == -1){
perror("server: accept");
continue;
}
inet_ntop(client_addr.ss_family,
get_in_addr((struct sockaddr *)&client_addr),
s,
sizeof(s));
D1("server: got connection from %s\n", s);
if (!fork()){ // child process
close(sock); // child doesn't need the listener
char *strnonce = NULL;
char *msg = NULL;
char command = 0;
char *token[3] = {NULL,NULL,NULL};
char *p1_data = NULL;
char *p2_data = NULL;
char *auth_result = NULL;
/* Send the nonce */
strnonce = (char *) calloc(32, sizeof(char));
if (strnonce == NULL){
D("Malloc");
retval = SIBYL_OSERR;
goto ENDCHILD;
}
retval = send_nonce(newsock, strnonce);
if (retval != SIBYL_SUCCESS){
goto ENDCHILD;
}
/* Receive the client's message and parse it */
msg = (char *) calloc(SIBYL_MAX_MSG, sizeof(char));
if(msg == NULL){
D("Malloc");
retval = SIBYL_OSERR;
goto ENDCHILD;
}
retval = receive_msg(msg,
newsock,
&command,
token);
if (retval != SIBYL_SUCCESS){
goto ENDCHILD;
}
D1("Received: [%s]\n", msg);
D1("command: [%c]\n", command);
D1("m : %s\n", token[0]);
D1("p1 : %s\n", token[1]);
D1("p2 : %s\n", token[2]);
/*
* Now there are several actions depending on the command
* which is stored in command.
*/
/* Just send the public keys */
if(command == '-'){
retval = send_public_keys(dir,
decr_namefile,
sign_namefile,
newsock);
goto ENDCHILD;
}
/* Any other command requires decryption of p1 */
/* Decrypt p1 (p1 = token[1]) */
/* p1_data always includes a trailing 0 */
p1_data = (char *)calloc(RSA_size(decrypt) + 1,
sizeof(u_char));
if(p1_data == NULL){
D("Malloc strnonce");
retval = SIBYL_OSERR;
goto ENDCHILD;
}
D1("token[1]:{%s}\n", token[1]);
/* this is path */
char *resp = (char *)calloc(SIBYL_MAX_MSG,
sizeof(u_char));
memcpy(resp, token[1], strlen(token[1]));
retval = decrypt_token(p1_data,
command,
resp,
decrypt);
if (retval != SIBYL_SUCCESS){
printf("Decryption error\n");
goto ENDCHILD;
}
D1("p1_data: %s\n", p1_data);
/*
* If command != \000 then it is '0' <= command <='9'
* and translation is asked for.
*/
D1("token[0]:{%s}\n", token[0]);
if(command != 0){
if(strncmp(strnonce,
token[0],
strlen(strnonce))){
D("Wrong nonce");
retval = SIBYL_NONCE_ERROR;
goto ENDCHILD;
}
retval = translate_and_send(p1_data,
command,
decr_namefile,
dir,
newsock,
sign);
goto ENDCHILD;
}
/*
* Decrypt p2 (p2 = token[2]):
* only if command == verify
*/
p2_data = (char *)calloc(RSA_size(decrypt) + 1,
sizeof(u_char));
if(p2_data == NULL){
perror("Unable to allocate memory for p2_data");
retval = SIBYL_OSERR;
goto ENDCHILD;
}
retval = decrypt_token(p2_data,
command,
token[2],
decrypt);
if (retval != SIBYL_SUCCESS){
goto ENDCHILD;
}
D1("p2_data: %s\n", p2_data);
/* Is the password correct */
auth_result = calloc(1, sizeof(char));
if(auth_result == NULL){
D("Unable to allocate memory for auth_result");
retval = SIBYL_OSERR;
goto ENDCHILD;
}
retval = is_pwd_ok(p1_data,
p2_data,
auth_result,
strnonce);
if (retval != SIBYL_SUCCESS){
goto ENDCHILD;
}
/* Send the response to the client */
retval = send_response(&newsock,
token,
auth_result,
sign);
if (retval != SIBYL_SUCCESS){
goto ENDCHILD;
}
ENDCHILD:
free(strnonce);
free(msg);
free(p1_data);
free(p2_data);
free(auth_result);
/* Close socket */
close(newsock);
retval = SIBYL_SUCCESS;
goto FREE;
}
close(newsock); // parent doesn't need this
}
FREE:
RSA_free(decrypt);
RSA_free(sign);
free(dir);
free(ip);
free(port);
free(decr_namefile);
free(sign_namefile);
exit(retval);
}
static void *
check_tx (void *vprocessor)
{
CcnetProcessor *processor = vprocessor;
USE_PRIV;
char *user = NULL;
char *repo_id = priv->repo_id;
SeafRepo *repo = NULL;
repo = seaf_repo_manager_get_repo (seaf->repo_mgr, repo_id);
if (!repo) {
priv->rsp_code = g_strdup(SC_BAD_REPO);
priv->rsp_msg = g_strdup(SS_BAD_REPO);
goto out;
}
if (repo->version > 0 && priv->client_version < 6) {
seaf_warning ("Client protocol version is %d, "
"cannot sync version %d repo %s.\n",
priv->client_version, repo->version, repo_id);
priv->rsp_code = g_strdup(SC_PROTOCOL_MISMATCH);
priv->rsp_msg = g_strdup(SS_PROTOCOL_MISMATCH);
goto out;
}
if (decrypt_token (processor) < 0) {
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
goto out;
}
user = seaf_repo_manager_get_email_by_token (
seaf->repo_mgr, repo_id, priv->token);
if (!user) {
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
goto out;
}
if (priv->type == CHECK_TX_TYPE_UPLOAD &&
seaf_quota_manager_check_quota (seaf->quota_mgr, repo_id) < 0) {
priv->rsp_code = g_strdup(SC_QUOTA_FULL);
priv->rsp_msg = g_strdup(SS_QUOTA_FULL);
goto out;
}
char *perm = seaf_repo_manager_check_permission (seaf->repo_mgr,
repo_id, user, NULL);
if (!perm ||
(strcmp (perm, "r") == 0 && priv->type == CHECK_TX_TYPE_UPLOAD))
{
priv->rsp_code = g_strdup(SC_ACCESS_DENIED);
priv->rsp_msg = g_strdup(SS_ACCESS_DENIED);
g_free (perm);
goto out;
}
g_free (perm);
/* Record the (token, email, <peer info>) information, <peer info> may
* include peer_id, peer_ip, peer_name, etc.
*/
if (!seaf_repo_manager_token_peer_info_exists (seaf->repo_mgr, priv->token))
seaf_repo_manager_add_token_peer_info (seaf->repo_mgr,
priv->token,
processor->peer_id,
priv->peer_addr,
priv->peer_name,
(gint64)time(NULL));
else
seaf_repo_manager_update_token_peer_info (seaf->repo_mgr,
priv->token,
priv->peer_addr,
(gint64)time(NULL));
get_branch_head (processor);
/* Fill information for sending events. */
priv->user = g_strdup(user);
if (repo->virtual_info) {
memcpy (priv->orig_repo_id, repo->virtual_info->origin_repo_id, 36);
priv->orig_path = g_strdup(repo->virtual_info->path);
} else
memcpy (priv->orig_repo_id, repo_id, 36);
out:
seaf_repo_unref (repo);
g_free (user);
return vprocessor;
}