int
main(int argc, char *argv[])
{
int res;
struct ccn *ccn = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_closure *incoming;
if (argc != 2)
usage(argv[0]);
name = ccn_charbuf_create();
res = ccn_name_from_uri(name, argv[1]);
if (res < 0) {
fprintf(stderr, "invalid ccn URI: %s\n", argv[1]);
usage(argv[0]);
}
ccn = ccn_create();
res = ccn_connect(ccn, NULL);
if (res < 0) {
fprintf(stderr, "can't connect to ccn: %d\n", res);
ccn_perror(ccn, "ccn_connect");
exit(1);
}
incoming = calloc(1, sizeof(*incoming));
incoming->p = incoming_handler;
g_working = true;
gettimeofday(&g_start, NULL);
res = ccn_express_interest(ccn, name, incoming, NULL);
while (g_working && res >= 0)
res = ccn_run(ccn, 100);
free(incoming);
if (res < 0) {
ccn_perror(ccn, "ccn_run");
exit(1);
}
ccn_charbuf_destroy(&name);
ccn_destroy(&ccn);
return 0;
}
enum ccn_upcall_res
ccn_proxy_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 ccn_proxy_server* server = selfp->data;
struct ccn_proxy* proxy = server->proxy;
// struct ccn_proxy *proxy = (selfp->data)->proxy;
int i, res;
unsigned char* random = NULL;
struct ccn_charbuf* request_name;
struct ccn_indexbuf* request_comps;
struct ccn_charbuf* signed_info;
struct ccn_signing_params sp = CCN_SIGNING_PARAMS_INIT;
random = (unsigned char*)malloc(RESP_SIZE * sizeof(unsigned char));
for (i = 0; i < RESP_SIZE; i++) random[i] = rand() % 256;
handled++;
printf("random buffer created - creating signed object: %d\n", handled);
// Create a valid, signed ContentObject
request_name = NULL;
request_comps = NULL;
res = ccn_util_extract_name(info->interest_ccnb, info->interest_comps, &request_name, &request_comps);
signed_info = ccn_charbuf_create();
sp.type = CCN_CONTENT_DATA;
res = ccn_sign_content(proxy->handle, signed_info, request_name, &sp, random, RESP_SIZE);
// Drop the content object into the socket (handle) to be sent back downstream
res = ccn_put(proxy->handle, signed_info->buf, signed_info->length);
if (res < 0)
{
ccn_perror(proxy->handle, NULL);
printf("WTF?!?!?!\n");
}
else
{
printf("successfully put content object in the socket\n");
}
// // TODO: need to fill up random buffer and then inject it using ccn_put
return(CCN_UPCALL_RESULT_OK);
}
int NdnMediaProcess::startThread() {
struct ccn *h;
/* Shut down any lingering session */
while (ndnState.ccn != NULL) {
ndnState.active = 0;
printf("waiting for old session to die\n");
}
h = ccn_create();
if (ccn_connect(h, NULL) == -1) {
ccn_perror(h, "Failed to contact ccnd");
ccn_destroy(&h);
return (-1);
}
pthread_mutexattr_init(&ccn_attr);
pthread_mutexattr_settype(&ccn_attr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(&ccn_mutex, &ccn_attr);
ndnState.ccn = h;
pfds[0].fd = ccn_get_connection_fd(ndnState.ccn);
pfds[0].events = POLLIN;
clock = new QTimer(this);
connect(clock, SIGNAL(timeout()), this, SLOT(tick()));
clock->start(PER_PACKET_LEN);
if (! isRunning()) {
fprintf(stderr, "Starting voice thread in media_pro\n");
ndnState.active = true;
start(QThread::HighestPriority);
#ifdef Q_OS_LINUX
int policy;
struct sched_param param;
if (pthread_getschedparam(pthread_self(), &policy, ¶m) == 0) {
if (policy == SCHED_OTHER) {
policy = SCHED_FIFO;
param.sched_priority = 1;
pthread_setschedparam(pthread_self(), policy, ¶m);
}
}
#endif
}
else
fprintf(stderr, "what the hell\n");
return 0;
}
int main(void) {
int res;
struct ccn *ccn= NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *result = NULL;
struct ccn_closure in_interest = {.p=&incoming_interest};
struct ccn_signing_params sp = CCN_SIGNING_PARAMS_INIT; // Parameters for creating signed content objects.
char rawcontentbuf[1024] = "";
size_t content_size;
// 1. Name
name = ccn_charbuf_create();
res = ccn_name_from_uri(name, URI);
if (res < 0) {
fprintf(stderr, "bad ccn URI: %s\n", URI);
exit(1);
}
// 2. ccn_create, and ccn_connect
ccn = ccn_create();
res = ccn_connect(ccn, NULL);
if (res < 0) {
fprintf(stderr, "can't connect to ccnd: %d\n", res);
ccn_perror(ccn, "ccn_connect");
exit(1);
}
// 3. Create the signed content object, set up &sp - signing params;
// Extend a Name with a new version stamp if requested
/*int versioned = 0;
const char *postver = NULL;
memcmp(postver, "%00", 3);
if (versioned) {
res = ccn_create_version(ccn, name, CCN_V_REPLACE | CCN_V_NOW | CCN_V_HIGH, 0, 0);
if (res < 0) {
fprintf(stderr, "%s: ccn_create_version() failed\n");
exit(1);
}
if (postver != NULL) {
res = ccn_name_from_uri(name, postver);
if (res < 0) {
fprintf(stderr, "-V %s: invalid name suffix\n", postver);
exit(0);
}
}
} */
// Ask for a FinalBlockID if appropriate
/*int setfinal = 0;
if (setfinal)
sp.sp_flags |= CCN_SP_FINAL_BLOCK;
*/
// Set content type
//sp.type = content_type;
// Set freshness
/* The template_ccnb may contain a ccnb-encoded SignedInfo to supply selected fields from under
* the direction of sp_flags.
*/
/*int expire = -1;
if (expire >= 0) {
if (sp.template_ccnb == NULL) {
sp.template_ccnb = ccn_charbuf_create();
ccn_charbuf_append_tt(sp.template_ccnb, CCN_DTAG_SignedInfo, CCN_DTAG);
}
else if (sp.template_ccnb -> length > 0) {
sp.template_ccnb -> length--;
}
ccnb_tagged_putf(sp.template_ccnb, CCN_DTAG_FreshnessSeconds, "%ld", expire);
sp.sp_flags |= CCN_SP_TEMPL_FRESHNESS;
ccn_charbuf_append_closer(sp.template_ccnb);
}
*/
// Set key locator, if supplied
/*const char *key_uri = NULL;
//key_uri = optarg;
if (key_uri != NULL) {
struct ccn_charbuf *c = ccn_charbuf_create();
res = ccn_name_from_uri(c, key_uri);
if (res < 0) {
fprintf(stderr, "%s is not a valid ccnx URI\n", key_uri);
exit(1);
}
if (sp.template_ccnb == NULL) {
sp.template_ccnb = ccn_charbuf_create();
ccn_charbuf_append_tt(sp.template_ccnb, CCN_DTAG_SignedInfo, CCN_DTAG);
}
else if (sp.template_ccnb -> length > 0) {
sp.template_ccnb -> length--;
}
ccn_charbuf_append_tt(sp.template_ccnb, CCN_DTAG_KeyLocator, CCN_DTAG);
ccn_charbuf_append_tt(sp.template_ccnb, CCN_DTAG_KeyName, CCN_DTAG);
ccn_charbuf_append(sp.template_ccnb, c->buf, c->length);
ccn_charbuf_append_closer(sp.template_ccnb);
ccn_charbuf_append_closer(sp.template_ccnb);
sp.sp_flags |= CCN_SP_TEMPL_KEY_LOCATOR;
ccn_charbuf_append_closer(sp.template_ccnb);
ccn_charbuf_destroy(&c);
}
*/
// Set up a handler for interest
ccn_set_interest_filter(ccn, name, &in_interest);
// 4. Use ccn_sign_content to create the signed content object with composed &sp,
// if (force) { ccn_put; } # ccn_get means send ccn binary. For normal clients, this should be a ContentObject sent in response to an Interest.
// else { ccn_set_interest_filter; ccn_run; }
result = ccn_charbuf_create();
result -> length = 0;
strcat(rawcontentbuf, CONTENTDATA);
content_size = strlen(rawcontentbuf);
//sp.sp_flags |= CCN_SP_FINAL_BLOCK;
res = ccn_sign_content(ccn, result, name, &sp, rawcontentbuf, content_size);
if (res < 0) {
ccn_perror(ccn, "ccn_sign_content");
exit(1);
}
printf("Content signed, trying to send the data...\n");
res = ccn_put(ccn, result->buf, result->length);
if (res < 0) {
ccn_perror(ccn, "ccn_put");
printf("Failed to send content object: res = %d\n", res);
exit(1);
}
else
printf("ccn_put done, content object sent.\n");
// ccn_run serves as the event loop when timeout = -1
res = ccn_run(ccn, -1); // Loop here all the time until it is killed, then "Event loop..."
printf("Event loop...\n");
if (res < 0) {
ccn_perror(ccn, "ccn_run");
printf("Error: ccn_run\n");
exit(1);
}
ccn_destroy(&ccn);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&result);
ccn_charbuf_destroy(&sp.template_ccnb);
printf("ccn handle is destroyed... \n");
return 0;
}
int
main(int argc, char **argv)
{
struct ccn *h = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *null_name = NULL;
struct ccn_charbuf *name_prefix = NULL;
struct ccn_charbuf *newface = NULL;
struct ccn_charbuf *prefixreg = NULL;
struct ccn_charbuf *resultbuf = NULL;
struct ccn_charbuf *temp = NULL;
struct ccn_charbuf *templ = NULL;
const unsigned char *ptr = NULL;
size_t length = 0;
const char *arg = NULL;
const char *progname = NULL;
struct ccn_parsed_ContentObject pcobuf = {0};
struct ccn_face_instance face_instance_storage = {0};
struct ccn_face_instance *face_instance = &face_instance_storage;
struct ccn_forwarding_entry forwarding_entry_storage = {0};
struct ccn_forwarding_entry *forwarding_entry = &forwarding_entry_storage;
struct ccn_signing_params sp = CCN_SIGNING_PARAMS_INIT;
struct ccn_charbuf *keylocator_templ = NULL;
struct ccn_keystore *keystore = NULL;
long expire = -1;
int ipproto;
unsigned char ccndid_storage[32] = {0};
const unsigned char *ccndid = NULL;
size_t ccndid_size = 0;
int res;
int opt;
progname = argv[0];
while ((opt = getopt(argc, argv, "h")) != -1) {
switch (opt) {
case 'h':
default:
usage(progname);
}
}
/* Sanity check the URI and argument count */
arg = argv[optind];
if (arg == NULL)
usage(progname);
name = ccn_charbuf_create();
res = ccn_name_from_uri(name, arg);
if (res < 0) {
fprintf(stderr, "%s: bad ccn URI: %s\n", progname, arg);
exit(1);
}
if (argc - optind < 3 || argc - optind > 4)
usage(progname);
h = ccn_create();
res = ccn_connect(h, NULL);
if (res < 0) {
ccn_perror(h, "ccn_connect");
exit(1);
}
newface = ccn_charbuf_create();
temp = ccn_charbuf_create();
templ = ccn_charbuf_create();
keylocator_templ = ccn_charbuf_create();
resultbuf = ccn_charbuf_create();
name_prefix = ccn_charbuf_create();
null_name = ccn_charbuf_create();
CHKRES(ccn_name_init(null_name));
keystore = ccn_keystore_create();
/* We need to figure out our local ccnd's CCIDID */
/* Set up our Interest template to indicate scope 1 */
ccn_charbuf_reset(templ);
ccnb_element_begin(templ, CCN_DTAG_Interest);
ccnb_element_begin(templ, CCN_DTAG_Name);
ccnb_element_end(templ); /* </Name> */
ccnb_tagged_putf(templ, CCN_DTAG_Scope, "1");
ccnb_element_end(templ); /* </Interest> */
ccn_charbuf_reset(name);
CHKRES(res = ccn_name_from_uri(name, "ccnx:/%C1.M.S.localhost/%C1.M.SRV/ccnd/KEY"));
CHKRES(res = ccn_get(h, name, templ, 200, resultbuf, &pcobuf, NULL, 0));
res = ccn_ref_tagged_BLOB(CCN_DTAG_PublisherPublicKeyDigest,
resultbuf->buf,
pcobuf.offset[CCN_PCO_B_PublisherPublicKeyDigest],
pcobuf.offset[CCN_PCO_E_PublisherPublicKeyDigest],
&ccndid, &ccndid_size);
CHKRES(res);
if (ccndid_size > sizeof(ccndid_storage))
CHKRES(-1);
memcpy(ccndid_storage, ccndid, ccndid_size);
ccndid = ccndid_storage;
face_instance->action = "newface";
face_instance->ccnd_id = ccndid;
face_instance->ccnd_id_size = ccndid_size;
if (strcmp(argv[optind + 1], "tcp") == 0)
ipproto = 6;
else if (strcmp(argv[optind + 1], "udp") == 0)
ipproto = 17;
else
ipproto = atoi(argv[optind + 1]);
face_instance->descr.ipproto = ipproto; // XXX - 6 = tcp or 17 = udp
face_instance->descr.address = argv[optind + 2];
face_instance->descr.port = argv[optind + 3];
if (face_instance->descr.port == NULL)
face_instance->descr.port = CCN_DEFAULT_UNICAST_PORT;
face_instance->descr.mcast_ttl = -1;
face_instance->lifetime = (~0U) >> 1;
CHKRES(res = ccnb_append_face_instance(newface, face_instance));
temp->length = 0;
CHKRES(ccn_charbuf_putf(temp, "%s/.ccnx/.ccnx_keystore", getenv("HOME")));
res = ccn_keystore_init(keystore,
ccn_charbuf_as_string(temp),
"Th1s1sn0t8g00dp8ssw0rd.");
CHKRES(res);
ccnb_element_begin(keylocator_templ, CCN_DTAG_SignedInfo);
ccnb_element_begin(keylocator_templ, CCN_DTAG_KeyLocator);
ccnb_element_begin(keylocator_templ, CCN_DTAG_Key);
CHKRES(ccn_append_pubkey_blob(keylocator_templ, ccn_keystore_public_key(keystore)));
ccnb_element_end(keylocator_templ); /* </Key> */
ccnb_element_end(keylocator_templ); /* </KeyLocator> */
ccnb_element_end(keylocator_templ); /* </SignedInfo> */
sp.template_ccnb = keylocator_templ;
sp.sp_flags |= CCN_SP_TEMPL_KEY_LOCATOR;
sp.freshness = expire;
ccn_charbuf_reset(temp);
res = ccn_sign_content(h, temp, null_name, &sp,
newface->buf, newface->length);
CHKRES(res);
/* Create the new face */
CHKRES(ccn_name_init(name));
CHKRES(ccn_name_append_str(name, "ccnx"));
CHKRES(ccn_name_append(name, ccndid, ccndid_size));
CHKRES(ccn_name_append(name, "newface", 7));
CHKRES(ccn_name_append(name, temp->buf, temp->length));
res = ccn_get(h, name, templ, 1000, resultbuf, &pcobuf, NULL, 0);
if (res < 0) {
fprintf(stderr, "no response from face creation request\n");
exit(1);
}
ptr = resultbuf->buf;
length = resultbuf->length;
res = ccn_content_get_value(resultbuf->buf, resultbuf->length, &pcobuf, &ptr, &length);
CHKRES(res);
face_instance = ccn_face_instance_parse(ptr, length);
if (face_instance == NULL)
CHKRES(res = -1);
CHKRES(face_instance->faceid);
/* Finally, register the prefix */
ccn_charbuf_reset(name_prefix);
CHKRES(ccn_name_from_uri(name_prefix, arg));
forwarding_entry->action = "prefixreg";
forwarding_entry->name_prefix = name_prefix;
forwarding_entry->ccnd_id = ccndid;
forwarding_entry->ccnd_id_size = ccndid_size;
forwarding_entry->faceid = face_instance->faceid;
forwarding_entry->flags = -1; /* let ccnd decide */
forwarding_entry->lifetime = (~0U) >> 1;
prefixreg = ccn_charbuf_create();
CHKRES(res = ccnb_append_forwarding_entry(prefixreg, forwarding_entry));
ccn_charbuf_reset(temp);
res = ccn_sign_content(h, temp, null_name, &sp,
prefixreg->buf, prefixreg->length);
CHKRES(res);
CHKRES(ccn_name_init(name));
CHKRES(ccn_name_append_str(name, "ccnx"));
CHKRES(ccn_name_append(name, ccndid, ccndid_size));
CHKRES(ccn_name_append_str(name, "prefixreg"));
CHKRES(ccn_name_append(name, temp->buf, temp->length));
res = ccn_get(h, name, templ, 1000, resultbuf, &pcobuf, NULL, 0);
if (res < 0) {
fprintf(stderr, "no response from prefix registration request\n");
exit(1);
}
fprintf(stderr, "Prefix %s will be forwarded to face %d\n", arg, face_instance->faceid);
/* We're about to exit, so don't bother to free everything. */
ccn_destroy(&h);
exit(res < 0);
}
/**
* Resolve the version, based on existing ccn content.
* @param h is the the ccn handle; it may be NULL, but it is preferable to
* use the handle that the client probably already has.
* @param name is a ccnb-encoded Name prefix. It gets extended in-place with
* one additional Component such that it names highest extant
* version that can be found, subject to the supplied timeout.
* @param versioning_flags presently must be CCN_V_HIGH or CCN_V_HIGHEST,
* possibly combined with CCN_V_NESTOK. If CCN_V_NESTOK is not present
* and the ending component appears to be a version, the routine
* returns 0 immediately, on the assumption that an explicit
* version has already been provided.
* @param timeout_ms is a time value in milliseconds. This is applied per
* fetch attempt, so the total time may be longer by a factor that
* depends on the number of (ccn) hops to the source(s).
* @returns -1 for error, 0 if name could not be extended, 1 if was.
*/
int
ccn_resolve_version(struct ccn *h, struct ccn_charbuf *name,
int versioning_flags, int timeout_ms)
{
int res;
int myres = -1;
struct ccn_parsed_ContentObject pco_space = { 0 };
struct ccn_charbuf *templ = NULL;
struct ccn_charbuf *prefix = ccn_charbuf_create();
struct ccn_charbuf *cobj = ccn_charbuf_create();
struct ccn_parsed_ContentObject *pco = &pco_space;
struct ccn_indexbuf *ndx = ccn_indexbuf_create();
const unsigned char *vers = NULL;
size_t vers_size = 0;
int n;
struct ccn_indexbuf *nix = ccn_indexbuf_create();
unsigned char lowtime[7] = {CCN_MARKER_VERSION, 0, FF, FF, FF, FF, FF};
if ((versioning_flags & ~CCN_V_NESTOK & ~CCN_V_EST) != CCN_V_HIGH) {
ccn_seterror(h, EINVAL);
ccn_perror(h, "ccn_resolve_version is only implemented for versioning_flags = CCN_V_HIGH(EST)");
goto Finish;
}
n = ccn_name_split(name, nix);
if (n < 0)
goto Finish;
if ((versioning_flags & CCN_V_NESTOK) == 0) {
res = ccn_name_comp_get(name->buf, nix, n - 1, &vers, &vers_size);
if (res >= 0 && vers_size == 7 && vers[0] == CCN_MARKER_VERSION) {
myres = 0;
goto Finish;
}
}
templ = resolve_templ(templ, lowtime, sizeof(lowtime));
ccn_charbuf_append(prefix, name->buf, name->length); /* our copy */
cobj->length = 0;
res = ccn_get(h, prefix, templ, timeout_ms, cobj, pco, ndx, 0);
while (cobj->length != 0) {
if (pco->type == CCN_CONTENT_NACK) // XXX - also check for number of components
break;
res = ccn_name_comp_get(cobj->buf, ndx, n, &vers, &vers_size);
if (res < 0)
break;
if (vers_size == 7 && vers[0] == CCN_MARKER_VERSION) {
/* Looks like we have versions. */
name->length = 0;
ccn_charbuf_append(name, prefix->buf, prefix->length);
ccn_name_append(name, vers, vers_size);
myres = 0;
if ((versioning_flags & CCN_V_EST) == 0)
break;
templ = resolve_templ(templ, vers, vers_size);
if (templ == NULL) break;
cobj->length = 0;
res = ccn_get(h, prefix, templ, timeout_ms, cobj, pco, ndx,
CCN_GET_NOKEYWAIT);
}
else break;
}
Finish:
ccn_charbuf_destroy(&prefix);
ccn_charbuf_destroy(&cobj);
ccn_indexbuf_destroy(&ndx);
ccn_indexbuf_destroy(&nix);
ccn_charbuf_destroy(&templ);
return(myres);
}
int
main(int argc, char **argv)
{
struct ccn *h = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *templ = NULL;
struct ccn_charbuf *resultbuf = NULL;
const char *arg = NULL;
struct ccn_parsed_ContentObject pcobuf = { 0 };
int res;
char ch;
int allow_stale = 0;
int content_only = 0;
const unsigned char *ptr;
size_t length;
int resolve_version = 0;
const char *env_timeout = getenv("CCN_LINGER");
int timeout_ms = 3000;
while ((ch = getopt(argc, argv, "hacv")) != -1) {
switch (ch) {
case 'a':
allow_stale = 1;
break;
case 'c':
content_only = 1;
break;
case 'v':
if (resolve_version == 0)
resolve_version = CCN_V_HIGHEST;
else
resolve_version = CCN_V_HIGH;
break;
case 'h':
default:
usage(argv[0]);
}
}
arg = argv[optind];
if (arg == NULL)
usage(argv[0]);
name = ccn_charbuf_create();
res = ccn_name_from_uri(name, arg);
if (res < 0) {
fprintf(stderr, "%s: bad ccn URI: %s\n", argv[0], arg);
exit(1);
}
if (argv[optind + 1] != NULL)
fprintf(stderr, "%s warning: extra arguments ignored\n", argv[0]);
h = ccn_create();
res = ccn_connect(h, NULL);
if (res < 0) {
ccn_perror(h, "ccn_connect");
exit(1);
}
if (res < 0) {
fprintf(stderr, "%s: bad ccn URI: %s\n", argv[0], arg);
exit(1);
}
if (env_timeout != NULL && (res = atoi(env_timeout)) > 0) {
timeout_ms = res * 1000;
}
if (allow_stale || env_timeout != NULL) {
templ = ccn_charbuf_create();
ccn_charbuf_append_tt(templ, CCN_DTAG_Interest, CCN_DTAG);
ccn_charbuf_append_tt(templ, CCN_DTAG_Name, CCN_DTAG);
ccn_charbuf_append_closer(templ); /* </Name> */
if (allow_stale) {
ccn_charbuf_append_tt(templ, CCN_DTAG_AnswerOriginKind, CCN_DTAG);
ccnb_append_number(templ,
CCN_AOK_DEFAULT | CCN_AOK_STALE);
ccn_charbuf_append_closer(templ); /* </AnswerOriginKind> */
}
if (env_timeout != NULL) {
/*
* Choose the interest lifetime so there are at least 3
* expressions (in the unsatisfied case).
*/
unsigned char buf[3] = { 0 };
unsigned lifetime;
int i;
if (timeout_ms > 60000)
lifetime = 30 << 12;
else {
lifetime = timeout_ms * 2 / 5 * 4096 / 1000;
}
for (i = sizeof(buf) - 1; i >= 0; i--, lifetime >>= 8)
buf[i] = lifetime & 0xff;
ccnb_append_tagged_blob(templ, CCN_DTAG_InterestLifetime, buf, sizeof(buf));
}
