bool CcnH_regPrefix(CcnPrefixOp operation, struct ccn* ccnh, CCNDID ccndid, int faceid, struct ccn_charbuf* prefix) {
struct ccn_forwarding_entry* fe = CcnH_buildForwardingEntry(operation, ccndid, faceid, prefix);
struct ccn_charbuf* reqname = CcnH_signForwardingEntry(ccnh, ccndid, fe);
int res = ccn_get(ccnh, reqname, CcnH_localScopeTempl(), 5000, NULL, NULL, NULL, 0);
ccn_charbuf_destroy(&reqname);
free(fe);
return res == 0;
}
/**
*
* Create new face by sending out a request Interest
* The actual new face instance is returned
*
*/
static
struct ccn_face_instance *create_face(struct ccn *h, struct ccn_charbuf *local_scope_template,
struct ccn_charbuf *no_name, struct ccn_face_instance *face_instance)
{
struct ccn_charbuf *newface = NULL;
struct ccn_charbuf *signed_info = NULL;
struct ccn_charbuf *temp = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *resultbuf = NULL;
struct ccn_parsed_ContentObject pcobuf = {0};
struct ccn_face_instance *new_face_instance = NULL;
const unsigned char *ptr = NULL;
size_t length = 0;
int res = 0;
/* Encode the given face instance */
newface = ccn_charbuf_create();
ccnb_append_face_instance(newface, face_instance);
temp = ccn_charbuf_create();
res = ccn_sign_content(h, temp, no_name, NULL, newface->buf, newface->length);
resultbuf = ccn_charbuf_create();
/* Construct the Interest name that will create the face */
name = ccn_charbuf_create();
ccn_name_init(name);
ccn_name_append_str(name, "ccnx");
ccn_name_append(name, face_instance->ccnd_id, face_instance->ccnd_id_size);
ccn_name_append_str(name, face_instance->action);
ccn_name_append(name, temp->buf, temp->length);
/* send Interest to retrieve Data that contains the newly created face */
res = ccn_get(h, name, local_scope_template, 1000, resultbuf, &pcobuf, NULL, 0);
ON_ERROR_CLEANUP(res);
/* decode Data to get the actual face instance */
res = ccn_content_get_value(resultbuf->buf, resultbuf->length, &pcobuf, &ptr, &length);
ON_ERROR_CLEANUP(res);
new_face_instance = ccn_face_instance_parse(ptr, length);
ccn_charbuf_destroy(&newface);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
return new_face_instance;
cleanup:
ccn_charbuf_destroy(&newface);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
return NULL;
}
/**
* Request the current segment number from the ccnx data producer
*
* This is a request for meta data for the media stream the user has named with their URI.
* We assume that they want to join the media broadcast from what is currently being published
* and \em not want to start from the beginning...although there is good reason for that too.
*
* Getting this data is done by expressing interests in the meta data. The producer of the
* media stream will catch this through one of its ccnx filters and produce this meta data
* back through the network to us.
*
* \param h ccnx context handle
* \param name the content name for which we desire the meta data
* \param timeout how long to wait around
* \return the segment number to ask for first, 0 on timeout
*/
static uintmax_t *
get_segment (struct ccn *h, struct ccn_charbuf *name, int timeout)
{
struct ccn_charbuf *hn;
uintmax_t *result = NULL;
int res = 0;
GST_INFO ("get_segment step 1");
hn = ccn_charbuf_create ();
// ccn_name_append_components(hn, name->buf, 0, name->length );
ccn_charbuf_append_charbuf (hn, name);
ccn_name_from_uri (hn, "_meta_/.segment");
// ccn_name_append_str(hn, "_meta_");
// ccn_name_append_str(hn, ".segment");
GST_INFO ("get_segment step 2");
// res = ccn_resolve_version(h, hn, CCN_V_HIGHEST, timeout);
GST_INFO ("get_segment step 3, res: %d", res);
if (res == 0) {
struct ccn_charbuf *ho = ccn_charbuf_create ();
struct ccn_parsed_ContentObject pcobuf = { 0 };
const unsigned char *hc;
size_t hcs;
// hDump(DUMP_ADDR(hn->buf), DUMP_SIZE(hn->length));
GST_INFO ("get_segment step 10");
res = ccn_get (h, hn, NULL, timeout, ho, &pcobuf, NULL, 0);
GST_INFO ("get_segment step 11, res: %d", res);
if (res >= 0) {
hc = ho->buf;
hcs = ho->length;
// hDump( DUMP_ADDR(hc), DUMP_SIZE(hcs));
ccn_content_get_value (hc, hcs, &pcobuf, &hc, &hcs);
// hDump( DUMP_ADDR(hc), DUMP_SIZE(hcs));
result = calloc (1, sizeof (uintmax_t));
memcpy (result, hc, sizeof (uintmax_t));
}
ccn_charbuf_destroy (&ho);
}
GST_INFO ("get_segment step 9");
ccn_charbuf_destroy (&hn);
return (result);
}
void CcnCC_fetchCcndid(CcnCC self) {
int res;
struct ccn_charbuf* name = ccn_charbuf_create();
struct ccn_charbuf* resultbuf = ccn_charbuf_create();
struct ccn_parsed_ContentObject pcobuf = {0};
const uint8_t* ccndid_result;
static size_t ccndid_result_size;
ccn_name_from_uri(name, "ccnx:/%C1.M.S.localhost/%C1.M.SRV/ccnd/KEY");
res = ccn_get(self->ccnh, name, CcnH_localScopeTempl(), 4500, resultbuf, &pcobuf, NULL, 0);
if (res >= 0) {
res = ccn_ref_tagged_BLOB(CCN_DTAG_PublisherPublicKeyDigest, resultbuf->buf, pcobuf.offset[CCN_PCO_B_PublisherPublicKeyDigest], pcobuf.offset[CCN_PCO_E_PublisherPublicKeyDigest], &ccndid_result, &ccndid_result_size);
}
if (res >= 0 && ccndid_result_size == CCNDID_length) {
memcpy((void*)self->ccndid, ccndid_result, CCNDID_length);
} else {
self->error = true;
}
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&resultbuf);
}
/**
* Read a slice (from a repository) given the name.
* @param h is the ccn_handle on which to read.
* @param name is the charbuf containing the name of the sync slice to be read.
* @param slice is a pointer to a ccns_slice object which will be filled in
* on successful return.
* @returns 0 on success, -1 otherwise.
*/
int
ccns_read_slice(struct ccn *h, struct ccn_charbuf *name,
struct ccns_slice *slice) {
struct ccn_parsed_ContentObject pco_space = { 0 };
struct ccn_parsed_ContentObject *pco = &pco_space;
struct ccn_charbuf *nc = ccn_charbuf_create_n(name->length);
struct ccn_charbuf *cob = ccn_charbuf_create();
const unsigned char *content;
size_t content_length;
int res = -1;
if (nc == NULL || cob == NULL)
goto Cleanup;
ccn_charbuf_append_charbuf(nc, name);
res = ccn_resolve_version(h, nc, CCN_V_HIGHEST, 100); // XXX: timeout
if (res < 0)
goto Cleanup;
if (res == 0) {
// TODO: check if the last component is a segment number, chop it off, try again.
}
res = ccn_get(h, nc, NULL, 100, cob, pco, NULL, 0);
if (res < 0)
goto Cleanup;
if (pco->type != CCN_CONTENT_DATA) {
res = -1;
goto Cleanup;
}
res = ccn_content_get_value(cob->buf, cob->length, pco,
&content, &content_length);
if (res < 0)
goto Cleanup;
res = slice_parse(slice, content, content_length);
Cleanup:
ccn_charbuf_destroy(&nc);
ccn_charbuf_destroy(&cob);
return (res);
}
/**
*
* Get ccnd id
*
*/
static int
get_ccndid(struct ccn *h, struct ccn_charbuf *local_scope_template,
unsigned char *ccndid)
{
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *resultbuf = NULL;
struct ccn_parsed_ContentObject pcobuf = {0};
char ccndid_uri[] = "ccnx:/%C1.M.S.localhost/%C1.M.SRV/ccnd/KEY";
const unsigned char *ccndid_result;
static size_t ccndid_result_size;
int res;
name = ccn_charbuf_create();
resultbuf = ccn_charbuf_create();
res = ccn_name_from_uri(name, ccndid_uri);
ON_ERROR_EXIT(res, "Unable to parse service locator URI for ccnd key\n");
/* get Data */
res = ccn_get(h, name, local_scope_template, 4500, resultbuf, &pcobuf, NULL, 0);
ON_ERROR_EXIT(res, "Unable to get key from ccnd\n");
/* extract from Data */
res = ccn_ref_tagged_BLOB(CCN_DTAG_PublisherPublicKeyDigest,
resultbuf->buf,
pcobuf.offset[CCN_PCO_B_PublisherPublicKeyDigest],
pcobuf.offset[CCN_PCO_E_PublisherPublicKeyDigest],
&ccndid_result, &ccndid_result_size);
ON_ERROR_EXIT(res, "Unable to parse ccnd response for ccnd id\n");
memcpy((void *)ccndid, ccndid_result, ccndid_result_size);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&resultbuf);
return (ccndid_result_size);
}
static int
write_slice(struct ccn *h,
struct ccns_slice *slice,
struct ccn_charbuf *name) {
struct ccn_charbuf *content = NULL;
unsigned char *cbuf = NULL;
size_t clength = 0;
struct ccn_charbuf *sw = NULL;
struct ccn_charbuf *templ = NULL;
struct ccn_charbuf *cob = NULL;
struct ccn_signing_params sparm = CCN_SIGNING_PARAMS_INIT;
struct ccn_closure *wc = NULL;
int res;
sw = ccn_charbuf_create_n(32 + name->length);
if (sw == NULL) {
res = -1;
goto Cleanup;
}
ccn_charbuf_append_charbuf(sw, name);
ccn_name_chop(sw, NULL, -1); // remove segment number
ccn_name_from_uri(sw, "%C1.R.sw");
ccn_name_append_nonce(sw);
// create and sign the content object
cob = ccn_charbuf_create();
if (cob == NULL) {
res = -1;
goto Cleanup;
}
if (slice != NULL) {
content = ccn_charbuf_create();
if (content == NULL) {
res = -1;
goto Cleanup;
}
res = append_slice(content, slice);
if (res < 0)
goto Cleanup;
cbuf = content->buf;
clength = content->length;
} else {
sparm.type = CCN_CONTENT_GONE;
}
sparm.sp_flags = CCN_SP_FINAL_BLOCK;
res = ccn_sign_content(h, cob, name, &sparm, cbuf, clength);
if (res < 0)
goto Cleanup;
// establish handler for interest in the slice content object
wc = calloc(1, sizeof(*wc));
if (wc == NULL) {
res = -1;
goto Cleanup;
}
wc->p = &write_interest_handler;
wc->data = cob;
res = ccn_set_interest_filter(h, name, wc);
if (res < 0)
goto Cleanup;
templ = make_scope1_template();
if (templ == NULL) {
res = -1;
goto Cleanup;
}
res = ccn_get(h, sw, templ, 1000, NULL, NULL, NULL, 0);
if (res < 0)
goto Cleanup;
ccn_run(h, 1000); // give the repository a chance to fetch the data
if (wc->intdata != 1) {
res = -1;
goto Cleanup;
}
res = 0;
Cleanup:
ccn_set_interest_filter(h, name, NULL);
if (wc != NULL)
free(wc);
ccn_charbuf_destroy(&cob);
ccn_charbuf_destroy(&content);
ccn_charbuf_destroy(&sw);
ccn_charbuf_destroy(&templ);
return (res);
}
// creates a full structure without action, if proto == "face" only the
// faceid (from cmd_host parameter) and lifetime will be filled in.
struct ccn_face_instance *
parse_ccn_face_instance(struct ccndc_data *self,
const char *cmd_proto,
const char *cmd_host, const char *cmd_port,
const char *cmd_mcastttl, const char *cmd_mcastif,
int freshness)
{
struct ccn_face_instance *entry;
struct addrinfo hints = {.ai_family = AF_UNSPEC, .ai_flags = (AI_ADDRCONFIG)};
struct addrinfo mcasthints = {.ai_family = AF_UNSPEC, .ai_flags = (AI_ADDRCONFIG | AI_NUMERICHOST)};
struct addrinfo *raddrinfo = NULL;
struct addrinfo *mcastifaddrinfo = NULL;
char rhostnamebuf [NI_MAXHOST];
char rhostportbuf [NI_MAXSERV];
int off_address = -1, off_port = -1, off_source_address = -1;
int res;
int socktype;
entry = calloc(1, sizeof(*entry));
if (entry == NULL) {
ccndc_warn(__LINE__, "Fatal error: memory allocation failed");
goto ExitOnError;
}
// allocate storage for Face data
entry->store = ccn_charbuf_create();
if (entry->store == NULL) {
ccndc_warn(__LINE__, "Fatal error: memory allocation failed");
goto ExitOnError;
}
// copy static info
entry->ccnd_id = (const unsigned char *)self->ccnd_id;
entry->ccnd_id_size = self->ccnd_id_size;
if (cmd_proto == NULL) {
ccndc_warn(__LINE__, "command error, missing address type\n");
goto ExitOnError;
}
if (strcasecmp(cmd_proto, "udp") == 0) {
entry->descr.ipproto = IPPROTO_UDP;
socktype = SOCK_DGRAM;
} else if (strcasecmp(cmd_proto, "tcp") == 0) {
entry->descr.ipproto = IPPROTO_TCP;
socktype = SOCK_STREAM;
} else if (strcasecmp(cmd_proto, "face") == 0) {
errno = 0;
unsigned long faceid = strtoul(cmd_host, (char **)NULL, 10);
if (errno == ERANGE || errno == EINVAL || faceid > UINT_MAX || faceid == 0) {
ccndc_warn(__LINE__, "command error, face number invalid or out of range '%s'\n", cmd_host);
goto ExitOnError;
}
entry->faceid = (unsigned) faceid;
entry->lifetime = freshness;
return (entry);
} else {
ccndc_warn(__LINE__, "command error, unrecognized address type '%s'\n", cmd_proto);
goto ExitOnError;
}
if (cmd_host == NULL) {
ccndc_warn(__LINE__, "command error, missing hostname\n");
goto ExitOnError;
}
if (cmd_port == NULL || cmd_port[0] == 0)
cmd_port = CCN_DEFAULT_UNICAST_PORT;
hints.ai_socktype = socktype;
res = getaddrinfo(cmd_host, cmd_port, &hints, &raddrinfo);
if (res != 0 || raddrinfo == NULL) {
ccndc_warn(__LINE__, "command error, getaddrinfo for host [%s] port [%s]: %s\n", cmd_host, cmd_port, gai_strerror(res));
goto ExitOnError;
}
res = getnameinfo(raddrinfo->ai_addr, raddrinfo->ai_addrlen,
rhostnamebuf, sizeof(rhostnamebuf),
rhostportbuf, sizeof(rhostportbuf),
NI_NUMERICHOST | NI_NUMERICSERV);
freeaddrinfo(raddrinfo);
if (res != 0) {
ccndc_warn(__LINE__, "command error, getnameinfo: %s\n", gai_strerror(res));
goto ExitOnError;
}
off_address = entry->store->length;
res = ccn_charbuf_append(entry->store, rhostnamebuf, strlen(rhostnamebuf)+1);
if (res != 0) {
ccndc_warn(__LINE__, "Cannot append to charbuf");
goto ExitOnError;
}
off_port = entry->store->length;
res = ccn_charbuf_append(entry->store, rhostportbuf, strlen(rhostportbuf)+1);
if (res != 0) {
ccndc_warn(__LINE__, "Cannot append to charbuf");
goto ExitOnError;
}
entry->descr.mcast_ttl = -1;
if (cmd_mcastttl != NULL) {
char *endptr;
entry->descr.mcast_ttl = strtol(cmd_mcastttl, &endptr, 10);
if ((endptr != &cmd_mcastttl[strlen(cmd_mcastttl)]) ||
entry->descr.mcast_ttl < 0 || entry->descr.mcast_ttl > 255) {
ccndc_warn(__LINE__, "command error, invalid multicast ttl: %s\n", cmd_mcastttl);
goto ExitOnError;
}
}
if (cmd_mcastif != NULL) {
res = getaddrinfo(cmd_mcastif, NULL, &mcasthints, &mcastifaddrinfo);
if (res != 0) {
ccndc_warn(__LINE__, "command error, incorrect multicat interface [%s]: "
"mcastifaddr getaddrinfo: %s\n", cmd_mcastif, gai_strerror(res));
goto ExitOnError;
}
res = getnameinfo(mcastifaddrinfo->ai_addr, mcastifaddrinfo->ai_addrlen,
rhostnamebuf, sizeof(rhostnamebuf),
NULL, 0,
NI_NUMERICHOST | NI_NUMERICSERV);
freeaddrinfo(mcastifaddrinfo);
if (res != 0) {
ccndc_warn(__LINE__, "command error, getnameinfo: %s\n", gai_strerror(res));
goto ExitOnError;
}
off_source_address = entry->store->length;
res = ccn_charbuf_append(entry->store, rhostnamebuf, strlen(rhostnamebuf)+1);
if (res != 0) {
ccndc_warn(__LINE__, "Cannot append to charbuf");
goto ExitOnError;
}
}
entry->descr.address = (const char *)(entry->store->buf + off_address);
entry->descr.port = (const char *)(entry->store->buf + off_port);
if (off_source_address >= 0) {
entry->descr.source_address = (const char *)(entry->store->buf + off_source_address);
}
entry->lifetime = freshness;
return entry;
ExitOnError:
ccn_face_instance_destroy(&entry);
return (NULL);
}
struct ccn_face_instance *
parse_ccn_face_instance_from_face(struct ccndc_data *self,
const char *cmd_faceid)
{
struct ccn_face_instance *entry = calloc(1, sizeof(*entry));
// allocate storage for Face data
entry->store = ccn_charbuf_create();
// copy static info
entry->ccnd_id = (const unsigned char *)self->ccnd_id;
entry->ccnd_id_size = self->ccnd_id_size;
/* destroy a face - the URI field will hold the face number */
if (cmd_faceid == NULL) {
ccndc_warn(__LINE__, "command error, missing face number for destroyface\n");
goto ExitOnError;
}
char *endptr;
int facenumber = strtol(cmd_faceid, &endptr, 10);
if ((endptr != &cmd_faceid[strlen(cmd_faceid)]) ||
facenumber < 0) {
ccndc_warn(__LINE__, "command error invalid face number for destroyface: %d\n", facenumber);
goto ExitOnError;
}
entry->faceid = facenumber;
return entry;
ExitOnError:
ccn_face_instance_destroy(&entry);
return (NULL);
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
// "private section
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
int
ccndc_get_ccnd_id(struct ccndc_data *self)
{
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *resultbuf = NULL;
struct ccn_parsed_ContentObject pcobuf = {0};
char ccndid_uri[] = "ccnx:/%C1.M.S.localhost/%C1.M.SRV/ccnd/KEY";
const unsigned char *ccndid_result;
int res = 0;
name = ccn_charbuf_create();
if (name == NULL) {
ccndc_warn(__LINE__, "Unable to allocate storage for service locator name charbuf\n");
return -1;
}
resultbuf = ccn_charbuf_create();
if (resultbuf == NULL) {
ccndc_warn(__LINE__, "Unable to allocate storage for result charbuf");
res = -1;
goto Cleanup;
}
res = ccn_name_from_uri(name, ccndid_uri);
if (res < 0) {
ccndc_warn(__LINE__, "Unable to parse service locator URI for ccnd key");
goto Cleanup;
}
res = ccn_get(self->ccn_handle,
name,
self->local_scope_template,
4500, resultbuf, &pcobuf, NULL, 0);
if (res < 0) {
ccndc_warn(__LINE__, "Unable to get key from ccnd");
goto Cleanup;
}
res = ccn_ref_tagged_BLOB (CCN_DTAG_PublisherPublicKeyDigest,
resultbuf->buf,
pcobuf.offset[CCN_PCO_B_PublisherPublicKeyDigest],
pcobuf.offset[CCN_PCO_E_PublisherPublicKeyDigest],
&ccndid_result, &self->ccnd_id_size);
if (res < 0) {
ccndc_warn(__LINE__, "Unable to parse ccnd response for ccnd id");
goto Cleanup;
}
if (self->ccnd_id_size > sizeof (self->ccnd_id))
{
ccndc_warn(__LINE__, "Incorrect size for ccnd id in response");
goto Cleanup;
}
memcpy(self->ccnd_id, ccndid_result, self->ccnd_id_size);
Cleanup:
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&resultbuf);
return (res);
}
struct ccn_face_instance *
ccndc_do_face_action(struct ccndc_data *self,
const char *action,
struct ccn_face_instance *face_instance)
{
struct ccn_charbuf *newface = NULL;
struct ccn_charbuf *signed_info = NULL;
struct ccn_charbuf *temp = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *resultbuf = NULL;
struct ccn_parsed_ContentObject pcobuf = {0};
struct ccn_face_instance *new_face_instance = NULL;
const unsigned char *ptr = NULL;
size_t length = 0;
int res = 0;
face_instance->action = action;
/* Encode the given face instance */
newface = ccn_charbuf_create();
ON_NULL_CLEANUP(newface);
ON_ERROR_CLEANUP(ccnb_append_face_instance(newface, face_instance));
temp = ccn_charbuf_create();
ON_NULL_CLEANUP(temp);
res = ccn_sign_content(self->ccn_handle, temp, self->no_name, NULL, newface->buf, newface->length);
ON_ERROR_CLEANUP(res);
resultbuf = ccn_charbuf_create();
ON_NULL_CLEANUP(resultbuf);
/* Construct the Interest name that will create the face */
name = ccn_charbuf_create();
ON_NULL_CLEANUP(name);
ON_ERROR_CLEANUP(ccn_name_init(name));
ON_ERROR_CLEANUP(ccn_name_append_str(name, "ccnx"));
ON_ERROR_CLEANUP(ccn_name_append(name, face_instance->ccnd_id, face_instance->ccnd_id_size));
ON_ERROR_CLEANUP(ccn_name_append_str(name, face_instance->action));
ON_ERROR_CLEANUP(ccn_name_append(name, temp->buf, temp->length));
res = ccn_get(self->ccn_handle, name, self->local_scope_template, 1000, resultbuf, &pcobuf, NULL, 0);
ON_ERROR_CLEANUP(res);
ON_ERROR_CLEANUP(ccn_content_get_value(resultbuf->buf, resultbuf->length, &pcobuf, &ptr, &length));
new_face_instance = ccn_face_instance_parse(ptr, length);
ON_NULL_CLEANUP(new_face_instance);
ccn_charbuf_destroy(&newface);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
return (new_face_instance);
Cleanup:
ccn_charbuf_destroy(&newface);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
ccn_face_instance_destroy(&new_face_instance);
return (NULL);
}
int
ccndc_do_prefix_action(struct ccndc_data *self,
const char *action,
struct ccn_forwarding_entry *forwarding_entry)
{
struct ccn_charbuf *temp = NULL;
struct ccn_charbuf *resultbuf = NULL;
struct ccn_charbuf *signed_info = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *prefixreg = NULL;
struct ccn_parsed_ContentObject pcobuf = {0};
struct ccn_forwarding_entry *new_forwarding_entry = NULL;
const unsigned char *ptr = NULL;
size_t length = 0;
int res;
forwarding_entry->action = action;
prefixreg = ccn_charbuf_create();
ON_NULL_CLEANUP(prefixreg);
ON_ERROR_CLEANUP(ccnb_append_forwarding_entry(prefixreg, forwarding_entry));
temp = ccn_charbuf_create();
ON_NULL_CLEANUP(temp);
res = ccn_sign_content(self->ccn_handle, temp, self->no_name, NULL, prefixreg->buf, prefixreg->length);
ON_ERROR_CLEANUP(res);
resultbuf = ccn_charbuf_create();
ON_NULL_CLEANUP(resultbuf);
name = ccn_charbuf_create();
ON_ERROR_CLEANUP(ccn_name_init(name));
ON_ERROR_CLEANUP(ccn_name_append_str(name, "ccnx"));
ON_ERROR_CLEANUP(ccn_name_append(name, forwarding_entry->ccnd_id, forwarding_entry->ccnd_id_size));
ON_ERROR_CLEANUP(ccn_name_append_str(name, forwarding_entry->action));
ON_ERROR_CLEANUP(ccn_name_append(name, temp->buf, temp->length));
res = ccn_get(self->ccn_handle, name, self->local_scope_template, 1000, resultbuf, &pcobuf, NULL, 0);
ON_ERROR_CLEANUP(res);
ON_ERROR_CLEANUP(ccn_content_get_value(resultbuf->buf, resultbuf->length, &pcobuf, &ptr, &length));
new_forwarding_entry = ccn_forwarding_entry_parse(ptr, length);
ON_NULL_CLEANUP(new_forwarding_entry);
res = new_forwarding_entry->faceid;
ccn_forwarding_entry_destroy(&new_forwarding_entry);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&prefixreg);
return (res);
/* This is where ON_ERROR_CLEANUP sends us in case of an error
* and we must free any storage we allocated before returning.
*/
Cleanup:
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&prefixreg);
return (-1);
}
/**
*
* Bind a prefix to a face
*
*/
static int
register_unregister_prefix(struct ccn *h, struct ccn_charbuf *local_scope_template,
struct ccn_charbuf *no_name, struct ccn_charbuf *name_prefix,
struct ccn_face_instance *face_instance, int operation)
{
struct ccn_charbuf *temp = NULL;
struct ccn_charbuf *resultbuf = NULL;
struct ccn_charbuf *signed_info = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *prefixreg = NULL;
struct ccn_parsed_ContentObject pcobuf = {0};
struct ccn_forwarding_entry forwarding_entry_storage = {0};
struct ccn_forwarding_entry *forwarding_entry = &forwarding_entry_storage;
struct ccn_forwarding_entry *new_forwarding_entry;
const unsigned char *ptr = NULL;
size_t length = 0;
int res;
/* Register or unregister the prefix */
forwarding_entry->action = (operation == OP_REG) ? "prefixreg" : "unreg";
forwarding_entry->name_prefix = name_prefix;
forwarding_entry->ccnd_id = face_instance->ccnd_id;
forwarding_entry->ccnd_id_size = face_instance->ccnd_id_size;
forwarding_entry->faceid = face_instance->faceid;
forwarding_entry->flags = -1;
forwarding_entry->lifetime = 2100;
prefixreg = ccn_charbuf_create();
ccnb_append_forwarding_entry(prefixreg, forwarding_entry);
temp = ccn_charbuf_create();
res = ccn_sign_content(h, temp, no_name, NULL, prefixreg->buf, prefixreg->length);
resultbuf = ccn_charbuf_create();
/* construct Interest containing prefixreg request */
name = ccn_charbuf_create();
ccn_name_init(name);
ccn_name_append_str(name, "ccnx");
ccn_name_append(name, face_instance->ccnd_id, face_instance->ccnd_id_size);
ccn_name_append_str(name, (operation == OP_REG) ? "prefixreg" : "unreg");
ccn_name_append(name, temp->buf, temp->length);
/* send Interest, get Data */
res = ccn_get(h, name, local_scope_template, 1000, resultbuf, &pcobuf, NULL, 0);
ON_ERROR_CLEANUP(res);
res = ccn_content_get_value(resultbuf->buf, resultbuf->length, &pcobuf, &ptr, &length);
ON_ERROR_CLEANUP(res);
/* extract new forwarding entry from Data */
new_forwarding_entry = ccn_forwarding_entry_parse(ptr, length);
ON_NULL_CLEANUP(new_forwarding_entry);
res = new_forwarding_entry->faceid;
ccn_forwarding_entry_destroy(&new_forwarding_entry);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&prefixreg);
return res;
cleanup:
ccn_forwarding_entry_destroy(&new_forwarding_entry);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&resultbuf);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&prefixreg);
return -1;
}
int
main(int argc, char **argv)
{
const char *progname = argv[0];
struct ccn *ccn = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_seqwriter *w = NULL;
int blocksize = 1024;
int torepo = 0;
int scope = 1;
int i;
int status = 0;
int res;
ssize_t read_res;
size_t blockread;
unsigned char *buf = NULL;
struct ccn_charbuf *templ;
while ((res = getopt(argc, argv, "hrb:s:")) != -1) {
switch (res) {
case 'b':
blocksize = atoi(optarg);
if (blocksize <= 0 || blocksize > 4096)
usage(progname);
break;
case 'r':
torepo = 1;
break;
case 's':
scope = atoi(optarg);
if (scope < 1 || scope > 3)
usage(progname);
break;
default:
case 'h':
usage(progname);
break;
}
}
argc -= optind;
argv += optind;
if (argc != 1)
usage(progname);
name = ccn_charbuf_create();
res = ccn_name_from_uri(name, argv[0]);
if (res < 0) {
fprintf(stderr, "%s: bad CCN URI: %s\n", progname, argv[0]);
exit(1);
}
ccn = ccn_create();
if (ccn_connect(ccn, NULL) == -1) {
perror("Could not connect to ccnd");
exit(1);
}
buf = calloc(1, blocksize);
w = ccn_seqw_create(ccn, name);
if (w == NULL) {
fprintf(stderr, "ccn_seqw_create failed\n");
exit(1);
}
ccn_seqw_set_block_limits(w, blocksize, blocksize);
if (torepo) {
struct ccn_charbuf *name_v = ccn_charbuf_create();
ccn_seqw_get_name(w, name_v);
ccn_name_from_uri(name_v, "%C1.R.sw");
ccn_name_append_nonce(name_v);
templ = make_template(scope);
res = ccn_get(ccn, name_v, templ, 60000, NULL, NULL, NULL, 0);
ccn_charbuf_destroy(&templ);
ccn_charbuf_destroy(&name_v);
if (res < 0) {
fprintf(stderr, "No response from repository\n");
exit(1);
}
}
blockread = 0;
for (i = 0;; i++) {
while (blockread < blocksize) {
ccn_run(ccn, 1);
read_res = read(0, buf + blockread, blocksize - blockread);
if (read_res == 0)
goto cleanup;
if (read_res < 0) {
perror("read");
status = 1;
goto cleanup;
}
blockread += read_res;
}
res = ccn_seqw_write(w, buf, blockread);
while (res == -1) {
ccn_run(ccn, 100);
res = ccn_seqw_write(w, buf, blockread);
}
if (res != blockread)
abort(); /* hmm, ccn_seqw_write did a short write or something */
blockread = 0;
}
cleanup:
// flush out any remaining data and close
if (blockread > 0) {
res = ccn_seqw_write(w, buf, blockread);
while (res == -1) {
ccn_run(ccn, 100);
res = ccn_seqw_write(w, buf, blockread);
}
}
ccn_seqw_close(w);
ccn_run(ccn, 1);
free(buf);
buf = NULL;
ccn_charbuf_destroy(&name);
ccn_destroy(&ccn);
exit(status);
}
int main (int argc, char **argv) {
int res;
//check if user supplied uri to trace
if(argv[1] == NULL) {
printf("Usage: trace URI\n");
exit(1);
}
//get the length of user provided URI
int argv_length = strlen(argv[1]);
//check first six chars for ccnx:/, if present, skip them
int skip = 0;
res = strncmp("ccnx:/", argv[1], 6);
if(res == 0) {
skip = 5;
}
//if URI does not begins with /, exit
if (argv[1][skip] != '/') {
printf("URI must begin with /\n");
exit(1);
}
//check if uri ends with slash, append if missing
char *slash = "";
if (argv[1][argv_length-1] != '/') {
slash = "/";
}
//allocate memory for trace URI = /trace/user_input/random_number
char *URI = (char *) malloc(sizeof(char)* argv_length+1); //find size of rand
if(URI == NULL) {
fprintf(stderr, "Can not allocate memory for URI\n");
exit(1);
}
//put together the trace URI, add a random number to end of URI
srand ((unsigned int)time (NULL)*getpid());
sprintf(URI, "%s%s", argv[1]+skip, slash);
//allocate memory for interest
struct ccn_charbuf *ccnb = ccn_charbuf_create();
if(ccnb == NULL) {
fprintf(stderr, "Can not allocate memory for interest\n");
exit(1);
}
//adding name to interest
res = ccn_name_from_uri(ccnb, URI);
if(res == -1) {
fprintf(stderr, "Failed to assign name to interest");
exit(1);
}
//create the ccn handle
struct ccn *ccn = ccn_create();
if(ccn == NULL) {
fprintf(stderr, "Can not create ccn handle\n");
exit(1);
}
//connect to ccnd
res = ccn_connect(ccn, NULL);
if (res == -1) {
fprintf(stderr, "Could not connect to ccnd... exiting\n");
exit(1);
}
#ifdef DEBUG
printf("Connected to CCND, return code: %d\n", res);
#endif
//allocate buffer for response
struct ccn_charbuf *resultbuf = ccn_charbuf_create();
if(resultbuf == NULL) {
fprintf(stderr, "Can not allocate memory for URI\n");
exit(1);
}
//setting the parameters for ccn_get
struct ccn_parsed_ContentObject pcobuf = { 0 };
int timeout_ms = 6000;
//express interest
//res = ccn_get(ccn, ccnb, NULL, timeout_ms, resultbuf, &pcobuf, NULL, 0);
//if cached answer is not allowed, set the template
//make sure AnswerOriginKind is 0x0
if(!ALLOW_CACHE) {
struct ccn_charbuf *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> */
ccn_charbuf_append_tt(templ, CCN_DTAG_AnswerOriginKind, CCN_DTAG);
ccnb_append_number(templ,0x0);
ccn_charbuf_append_closer(templ); /* </AnswerOriginKind> */
ccn_charbuf_append_closer(templ);
//send out the interest
res = ccn_get(ccn, ccnb, templ, timeout_ms, resultbuf, &pcobuf, NULL, 0);
}
//cached answer is allowed, don't set template
else {
res = ccn_get(ccn, ccnb, NULL, timeout_ms, resultbuf, &pcobuf, NULL, 0);
}
if (res == -1) {
fprintf(stderr, "Did not receive answer for trace to %s\n", argv[1]);
#ifdef DEBUG
fprintf(stderr, "Did not receive answer for trace to URI: %s\n", URI);
#endif
exit(1);
}
//extract data from the response
const unsigned char *ptr;
size_t length;
ptr = resultbuf->buf;
length = resultbuf->length;
ccn_content_get_value(ptr, length, &pcobuf, &ptr, &length);
//check if received some data
if(length == 0) {
fprintf(stderr, "Received empty answer for trace to %s\n", argv[1]);
#ifdef DEBUG
fprintf(stderr, "Received empty answer for trace to URI: %s\n", URI);
#endif
exit(1);
}
//print the data
printf("Reply: %s\n", ptr);
printf("Length of data: %Zu\n", length);
exit(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)
{
const char *progname = argv[0];
struct ccn *ccn = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_seqwriter *w = NULL;
int blocksize = CCN_MAX_CONTENT_PAYLOAD / 2;
int freshness = -1;
int torepo = 0;
int scope = 1;
int i;
int status = 0;
int res;
ssize_t read_res;
size_t blockread;
unsigned char *buf = NULL;
struct ccn_charbuf *templ;
char *symmetric_suffix = NULL;
const char *password = NULL;
char *dir = NULL;
while ((res = getopt(argc, argv, "hrb:s:x:d:p:o:")) != -1) {
switch (res) {
case 'b':
blocksize = atoi(optarg);
if (blocksize <= 0 || blocksize > CCN_MAX_CONTENT_PAYLOAD)
usage(progname);
break;
case 'r':
torepo = 1;
break;
case 's':
scope = atoi(optarg);
if (scope < 1 || scope > 3)
usage(progname);
break;
case 'x':
freshness = atoi(optarg);
if (freshness < 0)
usage(progname);
break;
case 'd':
symmetric_suffix = optarg;
break;
case 'p':
password = optarg;
break;
case 'o':
dir = optarg;
break;
case 'h':
usage(progname);
break;
}
}
argc -= optind;
argv += optind;
if (argc != 1)
usage(progname);
name = ccn_charbuf_create();
res = ccn_name_from_uri(name, argv[0]);
if (res < 0) {
fprintf(stderr, "%s: bad CCN URI: %s\n", progname, argv[0]);
exit(1);
}
ccn = ccn_create();
if (ccn_connect(ccn, NULL) == -1) {
perror("Could not connect to ccnd");
exit(1);
}
buf = calloc(1, blocksize);
w = ccn_seqw_create(ccn, name);
if (w == NULL) {
fprintf(stderr, "ccn_seqw_create failed\n");
exit(1);
}
if (symmetric_suffix != NULL) {
struct ccn_charbuf *key_digest = ccn_charbuf_create();
if (ccn_get_key_digest_from_suffix(ccn, dir, symmetric_suffix, password, key_digest)) {
perror("Can't access keystore");
exit(1);
}
ccn_seqw_set_key_digest(w, key_digest->buf, key_digest->length);
ccn_charbuf_destroy(&key_digest);
}
ccn_seqw_set_block_limits(w, blocksize, blocksize);
if (freshness > -1)
ccn_seqw_set_freshness(w, freshness);
if (torepo) {
struct ccn_charbuf *name_v = ccn_charbuf_create();
ccn_seqw_get_name(w, name_v);
ccn_name_from_uri(name_v, "%C1.R.sw");
ccn_name_append_nonce(name_v);
templ = make_template(scope);
res = ccn_get(ccn, name_v, templ, 60000, NULL, NULL, NULL, 0);
ccn_charbuf_destroy(&templ);
ccn_charbuf_destroy(&name_v);
if (res < 0) {
fprintf(stderr, "No response from repository\n");
exit(1);
}
}
blockread = 0;
for (i = 0;; i++) {
while (blockread < blocksize) {
if (ccn_run(ccn, 1) < 0) {
fprintf(stderr, "Lost connection to ccnd: %s\n",
strerror(ccn_geterror(ccn)));
exit(1);
}
read_res = read(0, buf + blockread, blocksize - blockread);
if (read_res == 0)
goto cleanup;
if (read_res < 0) {
perror("read");
status = 1;
goto cleanup;
}
blockread += read_res;
}
res = ccn_seqw_write(w, buf, blockread);
while (res == -1) {
if (ccn_run(ccn, 100) < 0) {
fprintf(stderr, "Lost connection to ccnd: %s\n",
strerror(ccn_geterror(ccn)));
exit(1);
}
res = ccn_seqw_write(w, buf, blockread);
}
if (res != blockread)
abort(); /* hmm, ccn_seqw_write did a short write or something */
blockread = 0;
}
cleanup:
// flush out any remaining data and close
if (blockread > 0) {
res = ccn_seqw_write(w, buf, blockread);
while (res == -1) {
if (ccn_run(ccn, 100) < 0) {
fprintf(stderr, "Lost connection to ccnd: %s\n",
strerror(ccn_geterror(ccn)));
exit(1);
}
res = ccn_seqw_write(w, buf, blockread);
}
}
ccn_seqw_close(w);
ccn_run(ccn, 1);
free(buf);
buf = NULL;
ccn_charbuf_destroy(&name);
ccn_destroy(&ccn);
exit(status);
}
int
verify_key(const unsigned char *ccnb,
struct ccn_parsed_ContentObject *pco,
int content_type){
if ( nlsr->debugging )
printf("verify key called\n");
int ret=-1;
//int res;
if ( contain_key_name(ccnb, pco) == 1){
struct ccn_charbuf *key_name=get_key_name(ccnb, pco);
struct ccn_charbuf *key_uri = ccn_charbuf_create();
ccn_uri_append(key_uri, key_name->buf, key_name->length, 0);
if ( nlsr->debugging )
printf("Key Name from Incoming Content: %s\n",ccn_charbuf_as_string(key_uri));
int key_type=get_key_type_from_key_name(key_name);
if ( nlsr->debugging )
printf("Key Type: %d \n",key_type);
struct ccn_charbuf *result = ccn_charbuf_create();
struct ccn_parsed_ContentObject temp_pco = {0};
int get_flags = 0;
get_flags |= CCN_GET_NOKEYWAIT;
int counter = 0;
while(ccn_get(nlsr->ccn, key_name, NULL, 500, result, &temp_pco, NULL,
get_flags) < 0 && counter < 3) counter++;
int chk_verify=ccn_verify_content(nlsr->ccn,ccnb,pco);
if ( chk_verify == 0 ){
if ( nlsr->debugging )
printf("Content verification Successful :)\n");
if ( counter == 3){
if ( nlsr->debugging )
printf("Could not retrieve key by name !!!\n");
}
else{
if ( key_type == ROOT_KEY ){
ret=0;
}
else{
if ( nlsr->isStrictHierchicalKeyCheck ){
int key_name_test=check_key_name_hierarchy(ccnb,
pco,
key_type,
content_type);
if ( key_name_test == 1){
ret=verify_key(result->buf,&temp_pco,content_type);
}
}
else{
ret=verify_key(result->buf,&temp_pco,content_type);
}
}
}
}
ccn_charbuf_destroy(&result);
ccn_charbuf_destroy(&key_uri);
ccn_charbuf_destroy(&key_name);
return ret;
}
return ret;
}
int
main(int argc, char **argv)
{
const char *progname = argv[0];
struct ccn *ccn = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_seqwriter *w = NULL;
long blocksize = 1024;
int torepo = 0;
int i;
int status = 0;
int res;
ssize_t read_res;
unsigned char *buf = NULL;
while ((res = getopt(argc, argv, "hrb:")) != -1) {
switch (res) {
case 'b':
blocksize = atol(optarg);
if (blocksize <= 0 || blocksize > 4096)
usage(progname);
break;
case 'r':
torepo = 1;
break;
default:
case 'h':
usage(progname);
break;
}
}
argc -= optind;
argv += optind;
if (argv[0] == NULL)
usage(progname);
name = ccn_charbuf_create();
res = ccn_name_from_uri(name, argv[0]);
if (res < 0) {
fprintf(stderr, "%s: bad ccnx URI: %s\n", progname, argv[0]);
exit(1);
}
if (argv[1] != NULL)
fprintf(stderr, "%s warning: extra arguments ignored\n", progname);
ccn = ccn_create();
if (ccn_connect(ccn, NULL) == -1) {
perror("Could not connect to ccnd");
exit(1);
}
buf = calloc(1, blocksize);
w = ccn_seqw_create(ccn, name);
if (w == NULL) {
fprintf(stderr, "ccn_seqw_create failed\n");
exit(1);
}
if (torepo) {
struct ccn_charbuf *name_v = ccn_charbuf_create();
ccn_seqw_get_name(w, name_v);
ccn_name_from_uri(name_v, "%C1.R.sw");
ccn_name_append_nonce(name_v);
ccn_get(ccn, name_v, NULL, 2000, NULL, NULL, NULL, 0);
ccn_charbuf_destroy(&name_v);
}
for (i = 0;; i++) {
ccn_run(ccn, 1);
read_res = read(0, buf, blocksize);
if (read_res < 0) {
perror("read");
read_res = 0;
status = 1;
}
if (read_res == 0) {
ccn_seqw_close(w);
w = NULL;
status = 0;
break;
}
res = ccn_seqw_write(w, buf, read_res);
while (res == -1) {
ccn_run(ccn, 100);
res = ccn_seqw_write(w, buf, read_res);
}
if (res != read_res)
abort(); /* hmm, ccn_seqw_write did a short write or something */
}
ccn_run(ccn, 1);
free(buf);
buf = NULL;
ccn_charbuf_destroy(&name);
ccn_destroy(&ccn);
exit(status);
}
