/**
* Destroy the ndnr instance, releasing all associated resources.
*/
PUBLIC void
r_init_destroy(struct ndnr_handle **pndnr)
{
struct ndnr_handle *h = *pndnr;
int stable;
if (h == NULL)
return;
stable = h->active_in_fd == -1 ? 1 : 0;
r_io_shutdown_all(h);
ndnr_direct_client_stop(h);
ndn_schedule_destroy(&h->sched);
hashtb_destroy(&h->propagating_tab);
hashtb_destroy(&h->nameprefix_tab);
hashtb_destroy(&h->enum_state_tab);
hashtb_destroy(&h->content_by_accession_tab);
// SyncActions sync_stop method should be shutting down heartbeat
if (h->sync_plumbing) {
h->sync_plumbing->sync_methods->sync_stop(h->sync_plumbing, NULL);
free(h->sync_plumbing);
h->sync_plumbing = NULL;
h->sync_base = NULL; // freed by sync_stop ?
}
r_store_final(h, stable);
if (h->fds != NULL) {
free(h->fds);
h->fds = NULL;
h->nfds = 0;
}
if (h->fdholder_by_fd != NULL) {
free(h->fdholder_by_fd);
h->fdholder_by_fd = NULL;
h->face_limit = h->face_gen = 0;
}
if (h->content_by_cookie != NULL) {
free(h->content_by_cookie);
h->content_by_cookie = NULL;
h->cookie_limit = 1;
}
ndn_charbuf_destroy(&h->scratch_charbuf);
ndn_indexbuf_destroy(&h->skiplinks);
ndn_indexbuf_destroy(&h->scratch_indexbuf);
ndn_indexbuf_destroy(&h->unsol);
if (h->parsed_policy != NULL) {
ndn_indexbuf_destroy(&h->parsed_policy->namespaces);
ndn_charbuf_destroy(&h->parsed_policy->store);
free(h->parsed_policy);
h->parsed_policy = NULL;
}
ndn_charbuf_destroy(&h->policy_name);
ndn_charbuf_destroy(&h->policy_link_cob);
ndn_charbuf_destroy(&h->ndnr_keyid);
free(h);
*pndnr = NULL;
}
int main(int argc, char* argv[]) {
struct dirent **namelist;
int n;
struct hashtb* stats = NULL;
char filename[512];
stats = hashtb_create(sizeof(struct stats_entry), NULL);
n = scandir(".", &namelist, &selector, alphasort);
if (n < 0)
perror("scandir");
else {
while (n--) {
sprintf(filename, "%s/stats.csv", namelist[n]->d_name);
read_stats(stats, filename);
free(namelist[n]);
}
free(namelist);
}
output_statistics(stats, "combined.csv");
hashtb_destroy(&stats);
return 0;
}
void
clear_old_routing_table(void)
{
if ( nlsr->debugging )
printf("clear_old_routing_table called\n");
if ( nlsr->detailed_logging )
writeLogg(__FILE__,__FUNCTION__,__LINE__,"clear_old_routing_table called\n");
int i,rt_element;
struct routing_table_entry *rte;
struct hashtb_enumerator ee;
struct hashtb_enumerator *e = ⅇ
hashtb_start(nlsr->routing_table, e);
rt_element=hashtb_n(nlsr->routing_table);
for(i=0;i<rt_element;i++)
{
rte=e->data;
hashtb_destroy(&rte->face_list);
struct hashtb_param param_fle = {0};
rte->face_list=hashtb_create(sizeof(struct face_list_entry), ¶m_fle);
hashtb_next(e);
}
hashtb_end(e);
}
void
destroy_keys(void)
{
int i, key_element;
struct nlsr_key *key;
struct hashtb_enumerator ee;
struct hashtb_enumerator *e = ⅇ
hashtb_start(nlsr->keys, e);
key_element=hashtb_n(nlsr->keys);
for(i=0;i<key_element;i++)
{
key=e->data;
free(key->key_name);
hashtb_next(e);
}
hashtb_end(e);
if( nlsr->keys )
hashtb_destroy(&nlsr->keys);
}
void
destroy_routing_table_entry_comp(struct routing_table_entry *rte)
{
free(rte->dest_router);
hashtb_destroy(&rte->face_list);
}
int
ccn_proxy_server_destroy(struct ccn_proxy_server **server)
{
struct ccn_proxy_server *s = *server;
ccn_proxy_destroy(&(s->proxy));
hashtb_destroy(&(s->cname_to_iname));
free(s);
return(0);
}
void
destroy_routing_table(void)
{
int i, rt_element;
struct hashtb_enumerator ee;
struct hashtb_enumerator *e = ⅇ
struct routing_table_entry *rte;
hashtb_start(nlsr->routing_table, e);
rt_element=hashtb_n(nlsr->routing_table);
for(i=0;i<rt_element;i++)
{
rte=e->data;
free(rte->dest_router);
hashtb_destroy(&rte->face_list);
hashtb_next(e);
}
hashtb_end(e);
hashtb_destroy(&nlsr->routing_table);
}
int
andana_client_destroy(struct andana_client **aclient)
{
struct andana_client *ac = *aclient;
ccn_proxy_destroy(&(ac->proxy));
andana_path_destroy(&(ac->path));
hashtb_destroy(&(ac->name_to_path));
free(ac);
return(0);
}
void LMD_dtor(LMD self) {
struct hashtb_enumerator htee; struct hashtb_enumerator* hte = &htee;
LMDRec rec;
for (hashtb_start(self->demux, hte); hte->data != NULL; ) {
rec = *((LMDRec*)hte->data);
LMDRec_dtor(rec);
hashtb_delete(hte);
}
hashtb_end(hte);
NBS_dtor(self->nbs);
if (self->localAddr != NULL) SockAddr_dtor(self->localAddr);
hashtb_destroy(&(self->demux));
free(self);
}
void
destroy_npl(void)
{
int i, npl_element;
struct name_prefix_list_entry *npe;
struct hashtb_enumerator ee;
struct hashtb_enumerator *e = ⅇ
hashtb_start(nlsr->npl, e);
npl_element=hashtb_n(nlsr->npl);
for(i=0;i<npl_element;i++)
{
npe=e->data;
destroy_npl_entry_component(npe);
hashtb_next(e);
}
hashtb_end(e);
if ( nlsr->npl)
hashtb_destroy(&nlsr->npl);
}
void SentPkts_dtor(SentPkts self) {
SentPktRec p, pnext; p = self->shead;
while (p != NULL) { pnext = p->snext; SentPktRec_dtor(p, false); p = pnext; }
hashtb_destroy(&(self->index));
free(self);
}
enum ccn_upcall_res
andana_server_decap_interest(
struct ccn_closure *selfp,
enum ccn_upcall_kind kind,
struct ccn_upcall_info *info)
{
enum ccn_upcall_res upcall_res = CCN_UPCALL_RESULT_ERR;
struct andana_server *server = selfp->data;
struct ccn_proxy *proxy = server->proxy;
struct ccn_charbuf *new_interest = NULL;
struct ccn_charbuf *new_name = NULL;
struct ccn_charbuf *orig_name = NULL;
struct ccn_indexbuf *orig_name_indexbuf = NULL;
int orig_name_ncomps;
char is_session = 0;
struct hashtb_enumerator ee;
struct hashtb_enumerator *e = ⅇ
int res;
DEBUG_PRINT("IN %d %s\n", __LINE__, __func__);
switch (kind) {
case CCN_UPCALL_INTEREST:
DEBUG_PRINT("%d %s received interest\n", __LINE__, __func__);
break;
case CCN_UPCALL_INTEREST_TIMED_OUT:
DEBUG_PRINT("%d %s received interest time out\n", __LINE__, __func__);
/* Fall through */
default:
DEBUG_PRINT("OUT %d %s\n", __LINE__, __func__);
return(CCN_UPCALL_RESULT_OK);
}
/* Extract Name from Interest */
orig_name_ncomps = ccn_util_extract_name(info->interest_ccnb,
info->interest_comps,
&orig_name,
&orig_name_indexbuf);
#ifdef PROXYDEBUG
ccn_util_print_pc_fmt(orig_name->buf, orig_name->length);
DEBUG_PRINT("\n");
DEBUG_PRINT("Name has %lu comps\n", orig_name_indexbuf->n-1);
#endif
/*Decapsulate & decrypt Interest. */
const unsigned char *const_encrypted = NULL;
unsigned char *encrypted = NULL;
size_t encrypted_size;
if (orig_name_ncomps >= 2) {
const unsigned char *session_check = NULL;
size_t session_check_size;
res = ccn_name_comp_get(orig_name->buf,
orig_name_indexbuf,
(unsigned int)server->SESSION_FLAG,
&session_check,
&session_check_size);
if (res < 0) {
DEBUG_PRINT("%d %s Error extracting session check component %lu\n", __LINE__, __func__, server->SESSION_FLAG);
goto SessionFail;
} else {
DEBUG_PRINT("%d %s Extracted component %lu\n", __LINE__, __func__,server->SESSION_FLAG);
}
if (session_check_size == strlen("SESSION") &&
memcmp(session_check, "SESSION", session_check_size) == 0) {
DEBUG_PRINT("%d %s Session identified\n", __LINE__, __func__);
is_session = 1;
} else {
DEBUG_PRINT("%d %s Not a session\n", __LINE__, __func__);
}
}
/* Decrypt the name (contains a new name and an Interest template) */
struct ccn_pkey *symkey = NULL;
struct ccn_charbuf *decrypted = NULL;
struct ccn_indexbuf *decrypted_comps = ccn_indexbuf_create();
if (is_session) {
res = ccn_name_comp_get(orig_name->buf,
orig_name_indexbuf,
(unsigned int)server->SESSION_ENC,
&const_encrypted,
&encrypted_size);
if (res < 0) {
DEBUG_PRINT("%d %s Error extracting encrypted session component %lu\n", __LINE__, __func__, server->SESSION_ENC);
goto SessionParseFail;
} else {
DEBUG_PRINT("%d %s Extracted encrypted session component %lu\n", __LINE__, __func__, server->SESSION_ENC);
}
encrypted = calloc(encrypted_size, sizeof(unsigned char));
memcpy(encrypted, const_encrypted, encrypted_size);
ccn_crypto_name_sym_decrypt(server->node_key,
encrypted,
encrypted_size,
&symkey,
&decrypted,
&decrypted_comps);
} else {
ccn_name_comp_get(orig_name->buf, orig_name_indexbuf, (unsigned int)server->ENC, &const_encrypted, &encrypted_size);
encrypted = calloc(encrypted_size, sizeof(unsigned char));
memcpy(encrypted, const_encrypted, encrypted_size);
ccn_crypto_name_asym_decrypt(server->privkey,
encrypted,
&symkey,
&decrypted,
&decrypted_comps);
}
size_t ncomps = decrypted_comps->n-1;
const unsigned char *tmpl = NULL;
size_t tmpl_size;
res = ccn_name_comp_get(decrypted->buf, decrypted_comps, (unsigned int)ncomps - 1, &tmpl, &tmpl_size);
if (res < 0) {
DEBUG_PRINT("ABORT %d %s unable to retrieve component %d\n",
__LINE__, __func__, (int)ncomps);
goto CompExtractFail;
}
/* Pull timestamp component (comp 0) */
const unsigned char *ts_data = NULL;
size_t ts_size;
res = ccn_name_comp_get(decrypted->buf, decrypted_comps, 0, &ts_data, &ts_size);
if (res < 0) {
goto CompExtractFail;
}
struct timeval timestamp;
ccn_util_extract_timestamp(ts_data, ts_size, ×tamp);
struct timeval window = {.tv_sec = 1, .tv_usec = 600000};
if (ccn_util_timestamp_window(×tamp, &window) == 0) {
/* Timestamp too far away, this may be a replay attack */
DEBUG_PRINT("%d %s Timestamp too distant\n", __LINE__, __func__);
goto TimestampFail;
}
new_name = ccn_charbuf_create();
ccn_name_init(new_name);
res = ccn_name_append_components(new_name,
decrypted->buf,
decrypted_comps->buf[1],
decrypted_comps->buf[ncomps-1]);
if (res < 0) {
DEBUG_PRINT("ABORT %d %s unable to append components\n",
__LINE__, __func__);
goto AppendCompFail;
}
/*Construct new Interest*/
if (tmpl_size == 0) {
/* Detected default template */
DEBUG_PRINT("%d %s Using default Interest template\n", __LINE__, __func__);
new_interest = NULL;
} else {
DEBUG_PRINT("%d %s Copying Interest template\n", __LINE__, __func__);
new_interest = ccn_charbuf_create();
ccn_charbuf_append(new_interest, tmpl, tmpl_size);
}
/*Map new name to that of the original Interest and the requested symkey */
hashtb_start(server->cname_to_pair, e);
res = hashtb_seek(e, new_name->buf, new_name->length, 0);
if (res == HT_NEW_ENTRY) {
struct andana_server_pair *p = andana_server_pair_init(orig_name, symkey);
struct andana_server_pair **loc = e->data;
*loc = p;
} else if (res == HT_OLD_ENTRY) {
DEBUG_PRINT("Interest recording found old entry\n");
goto LookupFail;
} else {
DEBUG_PRINT("Error in Interest insertion\n");
goto LookupFail;
}
DEBUG_PRINT("%d %s starting to write new interest\n", __LINE__, __func__);
res = ccn_express_interest(proxy->handle, new_name, proxy->content_handler, new_interest);
DEBUG_PRINT("%d %s done to writing new interest\n", __LINE__, __func__);
if(res != 0) {
DEBUG_PRINT("ABORT %d %s express interest res = %d\n", __LINE__, __func__, res);
goto SendFail;
}
upcall_res = CCN_UPCALL_RESULT_OK;
SendFail:
LookupFail:
if (upcall_res == CCN_UPCALL_RESULT_ERR) {
hashtb_delete(e);
}
hashtb_end(e);
if (new_interest != NULL) {
ccn_charbuf_destroy(&new_interest);
}
TimestampFail:
AppendCompFail:
ccn_charbuf_destroy(&new_name);
CompExtractFail:
ccn_charbuf_destroy(&decrypted);
free(encrypted);
ccn_crypto_symkey_destroy(&symkey);
SessionParseFail:
ccn_indexbuf_destroy(&decrypted_comps);
SessionFail:
ccn_charbuf_destroy(&orig_name);
ccn_indexbuf_destroy(&orig_name_indexbuf);
DEBUG_PRINT("OUT %d %s\n", __LINE__, __func__);
return(upcall_res);
}
/**
* Encapsulate and encrypt returning content objects. Encryption
* uses the ephemeral symmetric key provided by the user in the original
* interest (stored in a pair).
*
* This node will naturally sign the outgoing content object, thus providing
* verifiability.
*/
enum ccn_upcall_res
andana_server_encap_content(
struct ccn_closure *selfp,
enum ccn_upcall_kind kind,
struct ccn_upcall_info *info)
{
enum ccn_upcall_res upcall_res = CCN_UPCALL_RESULT_ERR;
struct andana_server *server = selfp->data;
struct ccn_proxy *proxy = server->proxy;
struct ccn_charbuf *new_name = NULL;
struct andana_server_pair **pair_ptr = NULL;
struct ccn_charbuf *new_content = NULL;
struct ccn_signing_params sp = CCN_SIGNING_PARAMS_INIT;
struct hashtb_enumerator ee;
struct hashtb_enumerator *e = ⅇ
int res;
DEBUG_PRINT("IN %d %s\n",__LINE__, __func__);
switch (kind) {
case CCN_UPCALL_CONTENT: /**< incoming verified content */
DEBUG_PRINT("%d %s Incoming verified content\n",__LINE__, __func__);
break;
case CCN_UPCALL_CONTENT_UNVERIFIED:/**< content that has not been verified */
DEBUG_PRINT("%d %s Incoming unverified content\n", __LINE__, __func__);
break;
case CCN_UPCALL_CONTENT_BAD: /**< verification failed */
DEBUG_PRINT("%d %s Incoming bad content (verification failure)\n", __LINE__, __func__);
break;
case CCN_UPCALL_INTEREST_TIMED_OUT:/**< interest timed out */
{
DEBUG_PRINT("OUT %d %s Interest timed out\n", __LINE__, __func__);
const unsigned char *name = info->interest_ccnb + info->pi->offset[CCN_PI_B_Name];
const size_t length = info->pi->offset[CCN_PI_E_Name] - info->pi->offset[CCN_PI_B_Name];
hashtb_start(server->cname_to_pair, e);
hashtb_seek(e, name, length, 0);
hashtb_delete(e);
hashtb_end(e);
return(CCN_UPCALL_RESULT_OK);
}
case CCN_UPCALL_FINAL:/**< handler is about to be deregistered */
DEBUG_PRINT("OUT %d %s final upcall\n", __LINE__, __func__);
return(CCN_UPCALL_RESULT_OK);
case CCN_UPCALL_INTEREST: /**< incoming interest */
case CCN_UPCALL_CONSUMED_INTEREST: /**< incoming interest, someone has answered */
default:
DEBUG_PRINT("OUT %d %s upcall other kind = %d\n", __LINE__, __func__, kind);
return(CCN_UPCALL_RESULT_ERR);
}
DEBUG_PRINT("%d %s Received content object\n", __LINE__, __func__);
if (info->content_ccnb == NULL) {
DEBUG_PRINT("OUT %d %s in content upcall, but no content, check kind: %d\n", __LINE__, __func__, kind);
return(CCN_UPCALL_RESULT_OK);
}
/*Find name in Content Object*/
new_name = ccn_charbuf_create();
ccn_name_init(new_name);
ccn_name_append_components(new_name, info->content_ccnb,
info->content_comps->buf[0], info->content_comps->buf[info->matched_comps]);
#ifdef PROXYDEBUG
DEBUG_PRINT("name matches %d comps\n", info->matched_comps);
ccn_util_print_pc_fmt(info->content_ccnb + info->pco->offset[CCN_PCO_B_Name],
info->pco->offset[CCN_PCO_E_Name] - info->pco->offset[CCN_PCO_B_Name]);
DEBUG_PRINT("\n");
#endif
pair_ptr = hashtb_lookup(server->cname_to_pair, new_name->buf, new_name->length);
if(pair_ptr == NULL) {
/* No match for name*/
#ifdef PROXYDEBUG
DEBUG_PRINT("Unsolicited content object with name: ");
ccn_util_print_pc_fmt(new_name->buf, new_name->length);
DEBUG_PRINT("\n");
#endif
goto LookupFail;
}
struct ccn_charbuf *orig_name = (*pair_ptr)->name;
struct ccn_pkey *symkey = (*pair_ptr)->symkey;
/*Created signed info for new content object*/
unsigned char *encrypted_content = NULL;
size_t encrypted_length;
struct ccn_charbuf *content = ccn_charbuf_create();
ccn_charbuf_append(content, info->content_ccnb, info->pco->offset[CCN_PCO_E]);
ccn_crypto_content_encrypt(symkey, content->buf, content->length, &encrypted_content, &encrypted_length);
new_content = ccn_charbuf_create();
sp.type = CCN_CONTENT_DATA;
res = ccn_sign_content(proxy->handle,
new_content,
orig_name,
&sp,
encrypted_content,
encrypted_length);
if (ccn_util_validate_content_object(new_content->buf, new_content->length) != 0) {
DEBUG_PRINT("ABORT %d %s Failed to validated signed content\n", __LINE__, __func__);
abort();
goto SignFail;
} else {
DEBUG_PRINT("OK %d %s signed content is valid\n", __LINE__, __func__);
}
if (res != 0) {
DEBUG_PRINT("ABORT %d %s Failed to encode ContentObject (res == %d)\n", __LINE__, __func__, res);
goto SignFail;
}
DEBUG_PRINT("%d %s starting content write\n", __LINE__, __func__);
res = ccn_put(proxy->handle, new_content->buf, new_content->length);
DEBUG_PRINT("%d %s done content write line\n", __LINE__, __func__);
if (res < 0) {
DEBUG_PRINT("ABORT %d %s ccn_put failed (res == %d)\n", __LINE__, __func__, res);
goto SendFail;
}
DEBUG_PRINT("%d %s Reply sent\n", __LINE__, __func__);
upcall_res = CCN_UPCALL_RESULT_OK;
SendFail:
hashtb_start(server->cname_to_pair, e);
hashtb_seek(e, new_name->buf, new_name->length, 0);
hashtb_delete(e);
hashtb_end(e);
SignFail:
ccn_charbuf_destroy(&new_content);
free(encrypted_content);
ccn_charbuf_destroy(&content);
LookupFail:
ccn_charbuf_destroy(&new_name);
DEBUG_PRINT("OUT %d %s\n", __LINE__, __func__);
return(upcall_res);
}
/**
* Clean up and destroy anonymous server object. Expect
* to be called once at program close.
*
* @param pointer to anonymous server to be destroyed
* @returns 0 (always)
*/
int
andana_server_destroy(struct andana_server **server)
{
struct andana_server *s = *server;
free(s->proxy->int_handler);
free(s->proxy->content_handler);
ccn_proxy_destroy(&(s->proxy));
ccn_crypto_pubkey_destroy(&(s->privkey));
hashtb_destroy(&(s->cname_to_pair));
free(s);
return(0);
}
