/**
* Write a ccns_slice object to a repository.
* @param h is the ccn_handle on which to write.
* @param slice is a pointer to a ccns_slice object to be written.
* @param name, if non-NULL, is a pointer to a charbuf which will be filled
* in with the name of the slice that was written.
* @returns 0 on success, -1 otherwise.
*/
int
ccns_write_slice(struct ccn *h,
struct ccns_slice *slice,
struct ccn_charbuf *name) {
struct ccn_charbuf *n = NULL;
int res;
// calculate versioned and segmented name for the slice
n = ccn_charbuf_create();
if (n == NULL)
return(-1);
res = ccns_slice_name(n, slice);
if (res < 0)
goto Cleanup;
res |= ccn_create_version(h, n, CCN_V_NOW, 0, 0);
if (name != NULL) {
ccn_charbuf_reset(name);
res |= ccn_charbuf_append_charbuf(name, n);
}
res |= ccn_name_append_numeric(n, CCN_MARKER_SEQNUM, 0);
if (res < 0)
goto Cleanup;
res = write_slice(h, slice, n);
Cleanup:
ccn_charbuf_destroy(&n);
return (res);
}
int
gen_test(struct ccn_charbuf **name, struct ccn_indexbuf **comps)
{
int res;
intmax_t secs = 1234567890;
int nsecs = 6000000;
*name = ccn_charbuf_create();
ccn_name_init(*name);
res = ccn_create_version(NULL, *name, 0, secs, nsecs);
if (res < 0) {
printf("Unable to create version\n");
return(-__LINE__);
}
*comps = ccn_indexbuf_create();
struct ccn_buf_decoder decoder;
struct ccn_buf_decoder *d = &decoder;
ccn_buf_decoder_start(d, (*name)->buf, (*name)->length);
res = ccn_parse_Name(d, *comps);
if (res < 0) {
printf("Unable to parse name\n");
return(-__LINE__);
}
return(0);
}
extern int
SyncCacheEntryStore(struct SyncHashCacheEntry *ce) {
// causes the cache entry to be saved to the repo
int res = 0;
if (ce == NULL) {
// not an entry
res = -1;
} else if (ce->ncL == NULL || ce->ncL->cb == NULL
|| (ce->state & SyncHashState_stored)
|| (ce->state & SyncHashState_storing) == 0 ) {
// not eligible
res = 0;
} else {
struct SyncRootStruct *root = ce->head->root;
struct SyncBaseStruct *base = root->base;
struct ccn_charbuf *name = SyncNameForLocalNode(root, ce->hash);
struct ccn_charbuf *content = ce->ncL->cb;
// TBD: do we want to omit version and segment?
res |= ccn_create_version(base->sd->ccn, name, CCN_V_NOW, 0, 0);
res |= ccn_name_append_numeric(name, CCN_MARKER_SEQNUM, 0);
res = SyncLocalRepoStore(base, name, content, CCN_SP_FINAL_BLOCK);
if (res > 0) {
// clear the bits
ce->state |= SyncHashState_stored;
ce->state = ce->state - SyncHashState_storing;
}
ccn_charbuf_destroy(&name);
}
return res;
}
/**
* should probably return a new cob, rather than reusing one.
* should publish link as:
* CCNRID_POLICY_URI("ccnx:/%C1.M.S.localhost/%C1.M.SRV/repository/POLICY)/%C1.M.K--pubid--/--version--/%00
* should have key locator which is the key name of the repository
*/
PUBLIC struct ccn_charbuf *
ccnr_init_policy_link_cob(struct ccnr_handle *ccnr, struct ccn *h,
struct ccn_charbuf *targetname)
{
struct ccn_signing_params sp = CCN_SIGNING_PARAMS_INIT;
struct ccn_charbuf *name = ccn_charbuf_create();
struct ccn_charbuf *pubid = ccn_charbuf_create();
struct ccn_charbuf *pubkey = ccn_charbuf_create();
struct ccn_charbuf *keyid = ccn_charbuf_create();
struct ccn_charbuf *content = ccn_charbuf_create();
struct ccn_charbuf *cob = ccn_charbuf_create();
struct ccn_charbuf *answer = NULL;
int res;
res = ccn_get_public_key(h, NULL, pubid, pubkey);
if (res < 0)
goto Bail;
if (ccn_name_from_uri(name, CCNRID_POLICY_URI) < 0)
goto Bail;
res |= ccn_charbuf_append_value(keyid, CCN_MARKER_CONTROL, 1);
res |= ccn_charbuf_append_string(keyid, ".M.K");
res |= ccn_charbuf_append_value(keyid, 0, 1);
res |= ccn_charbuf_append_charbuf(keyid, pubid);
res |= ccn_name_append(name, keyid->buf, keyid->length);
res |= ccn_create_version(h, name, CCN_V_NOW, 0, 0);
if (ccn_name_from_uri(name, "%00") < 0)
goto Bail;
sp.sp_flags |= CCN_SP_FINAL_BLOCK;
sp.type = CCN_CONTENT_LINK;
res |= ccnb_append_Link(content, targetname, "Repository Policy", NULL);
if (res != 0)
goto Bail;
res |= ccn_sign_content(h, cob, name, &sp, content->buf, content->length);
if (res != 0)
goto Bail;
answer = cob;
cob = NULL;
Bail:
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&pubid);
ccn_charbuf_destroy(&pubkey);
ccn_charbuf_destroy(&keyid);
ccn_charbuf_destroy(&content);
ccn_charbuf_destroy(&cob);
return (answer);
}
/**
* Delete a ccns_slice object from a repository.
* @param h is the ccn_handle on which to write.
* @param name is a pointer to a charbuf naming the slice to be deleted.
* @returns 0 on success, -1 otherwise.
*/
int
ccns_delete_slice(struct ccn *h, struct ccn_charbuf *name) {
struct ccn_charbuf *n = NULL;
int res = 0;
// calculate versioned and segmented name for the slice
n = ccn_charbuf_create_n(32 + name->length);
if (n == NULL)
return(-1);
res |= ccn_charbuf_append_charbuf(n, name);
res |= ccn_create_version(h, n, CCN_V_NOW | CCN_V_REPLACE, 0, 0);
res |= ccn_name_append_numeric(n, CCN_MARKER_SEQNUM, 0);
if (res >= 0)
res = write_slice(h, NULL, n);
ccn_charbuf_destroy(&n);
return (res);
}
static struct ccn_charbuf *
ccnr_init_service_ccnb(struct ccnr_handle *ccnr, struct ccn *h, const char *baseuri, int freshness)
{
struct ccn_signing_params sp = CCN_SIGNING_PARAMS_INIT;
struct ccn_charbuf *name = ccn_charbuf_create();
struct ccn_charbuf *pubid = ccn_charbuf_create();
struct ccn_charbuf *pubkey = ccn_charbuf_create();
struct ccn_charbuf *keyid = ccn_charbuf_create();
struct ccn_charbuf *cob = ccn_charbuf_create();
int res;
res = ccn_get_public_key(h, NULL, pubid, pubkey);
if (res < 0) abort();
ccn_name_from_uri(name, baseuri);
ccn_charbuf_append_value(keyid, CCN_MARKER_CONTROL, 1);
ccn_charbuf_append_string(keyid, ".M.K");
ccn_charbuf_append_value(keyid, 0, 1);
ccn_charbuf_append_charbuf(keyid, pubid);
ccn_name_append(name, keyid->buf, keyid->length);
ccn_create_version(h, name, 0, ccnr->starttime, ccnr->starttime_usec * 1000);
sp.template_ccnb = ccn_charbuf_create();
ccnb_element_begin(sp.template_ccnb, CCN_DTAG_SignedInfo);
ccnb_element_begin(sp.template_ccnb, CCN_DTAG_KeyLocator);
ccnb_element_begin(sp.template_ccnb, CCN_DTAG_KeyName);
ccn_charbuf_append_charbuf(sp.template_ccnb, name);
ccnb_element_end(sp.template_ccnb);
// ccn_charbuf_append_tt(sp.template_ccnb, CCN_DTAG_PublisherPublicKeyDigest,
// CCN_DTAG);
// ccn_charbuf_append_charbuf(sp.template_ccnb, pubid);
// ccnb_element_end(sp.template_ccnb);
ccnb_element_end(sp.template_ccnb);
ccnb_element_end(sp.template_ccnb);
sp.sp_flags |= CCN_SP_TEMPL_KEY_LOCATOR;
ccn_name_from_uri(name, "%00");
sp.sp_flags |= CCN_SP_FINAL_BLOCK;
sp.type = CCN_CONTENT_KEY;
sp.freshness = freshness;
res = ccn_sign_content(h, cob, name, &sp, pubkey->buf, pubkey->length);
if (res != 0) abort();
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&pubid);
ccn_charbuf_destroy(&pubkey);
ccn_charbuf_destroy(&keyid);
ccn_charbuf_destroy(&sp.template_ccnb);
return(cob);
}
/**
* Set up a connection with the ccnd router
*
* During this setup we establish a basic connection with the router service
* over an IP connection.
* This is also a good time to setup the ccn name for the content we will
* produce; that is the prefix name and the timestamp [Tnow], since the
* segment portion of the name is added just as the packet is being sent.
*
* Lastly we also load our security keys and create our signing parameters.
*
* \param me context sink element for which the socket is for
*/
static void
setup_ccn (Gstccnxsink * me)
{
struct ccn *ccn;
GST_DEBUG ("CCNxSink: setup name...");
if ((me->name = ccn_charbuf_create ()) == NULL) {
GST_ELEMENT_ERROR (me, RESOURCE, READ, (NULL), ("name alloc failed"));
return;
}
if (ccn_name_from_uri (me->name, me->uri) < 0) {
GST_ELEMENT_ERROR (me, RESOURCE, READ, (NULL), ("name from uri failed"));
return;
}
GST_DEBUG ("CCNxSink: creating ccn object");
if ((ccn = ccn_create ()) == NULL) {
GST_ELEMENT_ERROR (me, RESOURCE, READ, (NULL), ("ccn_create failed"));
return;
}
me->ccn = ccn;
GST_DEBUG ("CCNxSink: connecting");
if (-1 == ccn_connect (me->ccn, ccndHost ())) {
GST_ELEMENT_ERROR (me, RESOURCE, READ, (NULL), ("ccn_connect failed to %s",
ccndHost ()));
return;
}
GST_DEBUG ("CCNxSink: setting name version");
if (0 > ccn_create_version (ccn, me->name,
CCN_V_REPLACE | CCN_V_NOW | CCN_V_HIGH, 0, 0)) {
GST_ELEMENT_ERROR (me, RESOURCE, READ, (NULL),
("ccn_create_version() failed"));
return;
}
GST_DEBUG ("CCNxSink: setting up keystore");
/*
me->keystore = fetchStore();
if( me->keystore ) me->keylocator = makeLocator( ccn_keystore_public_key(me->keystore) );
*/
loadKey (me->ccn, &me->sp);
GST_DEBUG ("CCNxSink: done; have keys!");
}
/**
* Create a seqwriter for writing data to a versioned, segmented stream.
*
* @param name is a ccnb-encoded Name. It will be provided with a version
* based on the current time unless it already ends in a version
* component.
*/
struct ccn_seqwriter *
ccn_seqw_create(struct ccn *h, struct ccn_charbuf *name)
{
struct ccn_seqwriter *w = NULL;
struct ccn_charbuf *nb = NULL;
struct ccn_charbuf *nv = NULL;
int res;
w = calloc(1, sizeof(*w));
if (w == NULL)
return(NULL);
nb = ccn_charbuf_create();
ccn_charbuf_append(nb, name->buf, name->length);
nv = ccn_charbuf_create();
ccn_charbuf_append(nv, name->buf, name->length);
res = ccn_create_version(h, nv, CCN_V_NOW, 0, 0);
if (res < 0 || nb == NULL) {
ccn_charbuf_destroy(&nv);
ccn_charbuf_destroy(&nb);
free(w);
return(NULL);
}
w->cl.p = &seqw_incoming_interest;
w->cl.data = w;
w->nb = nb;
w->nv = nv;
w->buffer = ccn_charbuf_create();
w->h = h;
w->seqnum = 0;
w->interests_possibly_pending = 1;
res = ccn_set_interest_filter(h, nb, &(w->cl));
if (res < 0) {
ccn_charbuf_destroy(&w->nb);
ccn_charbuf_destroy(&w->nv);
ccn_charbuf_destroy(&w->buffer);
free(w);
return(NULL);
}
return(w);
}
int
main(int argc, char **argv)
{
const char *progname = argv[0];
struct ccn *ccn = NULL;
struct ccn_charbuf *name = NULL;
struct ccn_charbuf *pname = NULL;
struct ccn_charbuf *temp = NULL;
struct ccn_charbuf *extopt = NULL;
long expire = -1;
int versioned = 0;
size_t blocksize = 8*1024;
int status = 0;
int res;
ssize_t read_res;
unsigned char *buf = NULL;
enum ccn_content_type content_type = CCN_CONTENT_DATA;
struct ccn_closure in_interest = {.p=&incoming_interest};
const char *postver = NULL;
const char *key_uri = NULL;
int force = 0;
int verbose = 0;
int timeout = -1;
int setfinal = 0;
int prefixcomps = -1;
int fd;
struct ccn_signing_params sp = CCN_SIGNING_PARAMS_INIT;
while ((res = getopt(argc, argv, "e:fhk:lvV:p:t:w:x:")) != -1) {
switch (res) {
case 'e':
if (extopt == NULL)
extopt = ccn_charbuf_create();
fd = open(optarg, O_RDONLY);
if (fd < 0) {
perror(optarg);
exit(1);
}
for (;;) {
read_res = read(fd, ccn_charbuf_reserve(extopt, 64), 64);
if (read_res <= 0)
break;
extopt->length += read_res;
}
if (read_res < 0)
perror(optarg);
close(fd);
break;
case 'f':
force = 1;
break;
case 'l':
setfinal = 1; // set FinalBlockID to last comp of name
break;
case 'k':
key_uri = optarg;
break;
case 'p':
prefixcomps = atoi(optarg);
if (prefixcomps < 0)
usage(progname);
break;
case 'x':
expire = atol(optarg);
if (expire <= 0)
usage(progname);
break;
case 'v':
verbose = 1;
break;
case 'V':
versioned = 1;
postver = optarg;
if (0 == memcmp(postver, "%00", 3))
setfinal = 1;
break;
case 'w':
timeout = atol(optarg);
if (timeout <= 0)
usage(progname);
timeout *= 1000;
break;
case 't':
if (0 == strcasecmp(optarg, "DATA")) {
content_type = CCN_CONTENT_DATA;
break;
}
if (0 == strcasecmp(optarg, "ENCR")) {
content_type = CCN_CONTENT_ENCR;
break;
}
if (0 == strcasecmp(optarg, "GONE")) {
content_type = CCN_CONTENT_GONE;
break;
}
if (0 == strcasecmp(optarg, "KEY")) {
content_type = CCN_CONTENT_KEY;
break;
}
if (0 == strcasecmp(optarg, "LINK")) {
content_type = CCN_CONTENT_LINK;
break;
}
if (0 == strcasecmp(optarg, "NACK")) {
content_type = CCN_CONTENT_NACK;
break;
}
content_type = atoi(optarg);
if (content_type > 0 && content_type <= 0xffffff)
break;
fprintf(stderr, "Unknown content type %s\n", optarg);
/* FALLTHRU */
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);
/* Preserve the original prefix, in case we add versioning,
* but trim it down if requested for the interest filter registration
*/
pname = ccn_charbuf_create();
ccn_charbuf_append(pname, name->buf, name->length);
if (prefixcomps >= 0) {
res = ccn_name_chop(pname, NULL, prefixcomps);
if (res < 0) {
fprintf(stderr, "%s: unable to trim name to %d component%s.\n",
progname, prefixcomps, prefixcomps == 1 ? "" : "s");
exit(1);
}
}
/* Connect to ccnd */
ccn = ccn_create();
if (ccn_connect(ccn, NULL) == -1) {
perror("Could not connect to ccnd");
exit(1);
}
/* Read the actual user data from standard input */
buf = calloc(1, blocksize);
read_res = read_full(0, buf, blocksize);
if (read_res < 0) {
perror("read");
read_res = 0;
status = 1;
}
/* Tack on the version component if requested */
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", progname);
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);
}
}
}
temp = ccn_charbuf_create();
/* Ask for a FinalBlockID if appropriate. */
if (setfinal)
sp.sp_flags |= CCN_SP_FINAL_BLOCK;
if (res < 0) {
fprintf(stderr, "Failed to create signed_info (res == %d)\n", res);
exit(1);
}
/* Set content type */
sp.type = content_type;
/* Set freshness */
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 */
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);
}
if (extopt != NULL && extopt->length > 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_append_tagged_blob(sp.template_ccnb, CCN_DTAG_ExtOpt,
extopt->buf, extopt->length);
sp.sp_flags |= CCN_SP_TEMPL_EXT_OPT;
ccn_charbuf_append_closer(sp.template_ccnb);
}
/* Create the signed content object, ready to go */
temp->length = 0;
res = ccn_sign_content(ccn, temp, name, &sp, buf, read_res);
if (res != 0) {
fprintf(stderr, "Failed to encode ContentObject (res == %d)\n", res);
exit(1);
}
if (read_res == blocksize) {
read_res = read_full(0, buf, 1);
if (read_res == 1) {
fprintf(stderr, "%s: warning - truncated data\n", argv[0]);
status = 1;
}
}
free(buf);
buf = NULL;
if (force) {
/* At user request, send without waiting to see an interest */
res = ccn_put(ccn, temp->buf, temp->length);
if (res < 0) {
fprintf(stderr, "ccn_put failed (res == %d)\n", res);
exit(1);
}
}
else {
in_interest.data = temp;
/* Set up a handler for interests */
res = ccn_set_interest_filter(ccn, pname, &in_interest);
if (res < 0) {
fprintf(stderr, "Failed to register interest (res == %d)\n", res);
exit(1);
}
res = ccn_run(ccn, timeout);
if (in_interest.intdata == 0) {
if (verbose)
fprintf(stderr, "Nobody's interested\n");
exit(1);
}
}
if (verbose) {
struct ccn_charbuf *uri = ccn_charbuf_create();
uri->length = 0;
ccn_uri_append(uri, name->buf, name->length, 1);
printf("wrote %s\n", ccn_charbuf_as_string(uri));
ccn_charbuf_destroy(&uri);
}
ccn_destroy(&ccn);
ccn_charbuf_destroy(&name);
ccn_charbuf_destroy(&pname);
ccn_charbuf_destroy(&temp);
ccn_charbuf_destroy(&sp.template_ccnb);
ccn_charbuf_destroy(&extopt);
exit(status);
}
