int build_keylocator_from_key(struct ccn_charbuf** keylocator, struct ccn_pkey* key) {
int res = 0;
*keylocator = ccn_charbuf_create();
ccn_charbuf_append_tt(*keylocator, CCN_DTAG_KeyLocator, CCN_DTAG);
ccn_charbuf_append_tt(*keylocator, CCN_DTAG_Key, CCN_DTAG);
res = ccn_append_pubkey_blob(*keylocator, key);
ccn_charbuf_append_closer(*keylocator); /* </Key> */
ccn_charbuf_append_closer(*keylocator); /* </KeyLocator> */
return (res);
}
static int
ccn_create_keylocator(ccn_charbuf *c, const ccn_pkey *k)
{
int res;
ccn_charbuf_append_tt(c, CCN_DTAG_KeyLocator, CCN_DTAG);
ccn_charbuf_append_tt(c, CCN_DTAG_Key, CCN_DTAG);
res = ccn_append_pubkey_blob(c, k);
if (res < 0)
return (res);
else {
ccn_charbuf_append_closer(c); /* </Key> */
ccn_charbuf_append_closer(c); /* </KeyLocator> */
}
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);
}
int
main(int argc, char **argv)
{
const char *progname = argv[0];
struct ccn *ccn = NULL;
struct ccn_charbuf *root = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *temp = NULL;
struct ccn_charbuf *templ = NULL;
struct ccn_charbuf *signed_info = NULL;
struct ccn_charbuf *keylocator = NULL;
struct ccn_charbuf *finalblockid = NULL;
struct ccn_keystore *keystore = NULL;
long expire = -1;
long blocksize = 1024;
int i;
int status = 0;
int res;
ssize_t read_res;
unsigned char *buf = NULL;
struct mydata mydata = { 0 };
struct ccn_closure in_content = {.p=&incoming_content, .data=&mydata};
struct ccn_closure in_interest = {.p=&incoming_interest, .data=&mydata};
while ((res = getopt(argc, argv, "hx:b:")) != -1) {
switch (res) {
case 'x':
expire = atol(optarg);
if (expire <= 0)
usage(progname);
break;
case 'b':
blocksize = atol(optarg);
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 ccn 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);
root = name;
name = ccn_charbuf_create();
temp = ccn_charbuf_create();
templ = ccn_charbuf_create();
signed_info = ccn_charbuf_create();
keystore = ccn_keystore_create();
temp->length = 0;
ccn_charbuf_putf(temp, "%s/.ccnx/.ccnx_keystore", getenv("HOME"));
res = ccn_keystore_init(keystore,
ccn_charbuf_as_string(temp),
"Th1s1sn0t8g00dp8ssw0rd.");
if (res != 0) {
printf("Failed to initialize keystore\n");
exit(1);
}
name->length = 0;
ccn_charbuf_append(name, root->buf, root->length);
/* Set up a handler for interests */
ccn_set_interest_filter(ccn, name, &in_interest);
/* Initiate check to see whether there is already something there. */
temp->length = 0;
ccn_charbuf_putf(temp, "%d", 0);
ccn_name_append(name, temp->buf, temp->length);
templ->length = 0;
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_MaxSuffixComponents, CCN_DTAG);
ccn_charbuf_append_tt(templ, 1, CCN_UDATA);
ccn_charbuf_append(templ, "1", 1);
ccn_charbuf_append_closer(templ); /* </MaxSuffixComponents> */
// XXX - use pubid
ccn_charbuf_append_closer(templ); /* </Interest> */
res = ccn_express_interest(ccn, name, &in_content, templ);
if (res < 0) abort();
/* Construct a key locator contining the key itself */
keylocator = ccn_charbuf_create();
ccn_charbuf_append_tt(keylocator, CCN_DTAG_KeyLocator, CCN_DTAG);
ccn_charbuf_append_tt(keylocator, CCN_DTAG_Key, CCN_DTAG);
res = ccn_append_pubkey_blob(keylocator, ccn_keystore_public_key(keystore));
if (res < 0)
ccn_charbuf_destroy(&keylocator);
else {
ccn_charbuf_append_closer(keylocator); /* </Key> */
ccn_charbuf_append_closer(keylocator); /* </KeyLocator> */
}
for (i = 0;; i++) {
read_res = read_full(0, buf, blocksize);
if (read_res < 0) {
perror("read");
read_res = 0;
status = 1;
}
signed_info->length = 0;
if (read_res < blocksize) {
temp->length = 0;
ccn_charbuf_putf(temp, "%d", i);
ccn_name_append(name, temp->buf, temp->length);
finalblockid = ccn_charbuf_create();
ccn_charbuf_append_tt(finalblockid, temp->length, CCN_BLOB);
ccn_charbuf_append(finalblockid, temp->buf, temp->length);
}
res = ccn_signed_info_create(signed_info,
/*pubkeyid*/ccn_keystore_public_key_digest(keystore),
/*publisher_key_id_size*/ccn_keystore_public_key_digest_length(keystore),
/*datetime*/NULL,
/*type*/CCN_CONTENT_DATA,
/*freshness*/ expire,
finalblockid,
keylocator);
/* Put the keylocator in the first block only. */
ccn_charbuf_destroy(&keylocator);
if (res < 0) {
fprintf(stderr, "Failed to create signed_info (res == %d)\n", res);
exit(1);
}
name->length = 0;
ccn_charbuf_append(name, root->buf, root->length);
temp->length = 0;
ccn_charbuf_putf(temp, "%d", i);
ccn_name_append(name, temp->buf, temp->length);
temp->length = 0;
ccn_charbuf_append(temp, buf, read_res);
temp->length = 0;
res = ccn_encode_ContentObject(temp,
name,
signed_info,
buf,
read_res,
NULL,
ccn_keystore_private_key(keystore));
if (res != 0) {
fprintf(stderr, "Failed to encode ContentObject (res == %d)\n", res);
exit(1);
}
if (i == 0) {
/* Finish check for old content */
if (mydata.content_received == 0)
ccn_run(ccn, 100);
if (mydata.content_received > 0) {
fprintf(stderr, "%s: name is in use: %s\n", progname, argv[0]);
exit(1);
}
mydata.outstanding++; /* the first one is free... */
}
res = ccn_put(ccn, temp->buf, temp->length);
if (res < 0) {
fprintf(stderr, "ccn_put failed (res == %d)\n", res);
exit(1);
}
if (read_res < blocksize)
break;
if (mydata.outstanding > 0)
mydata.outstanding--;
else
res = 10;
res = ccn_run(ccn, res * 100);
if (res < 0) {
status = 1;
break;
}
}
free(buf);
buf = NULL;
ccn_charbuf_destroy(&root);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&signed_info);
ccn_charbuf_destroy(&finalblockid);
ccn_keystore_destroy(&keystore);
ccn_destroy(&ccn);
exit(status);
}