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ccndc.c
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/**
* @file ccndc.c
* @brief Bring up a link to another ccnd.
*
* A CCNx program.
*
* Copyright (C) 2009-2013 Palo Alto Research Center, Inc.
*
* This work is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2 as published by the
* Free Software Foundation.
* This work is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details. You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "ccndc.h"
#include "ccndc-log.h"
#include "ccndc-srv.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <limits.h>
#include <netdb.h>
#include <netinet/in.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/time.h>
#if defined(NEED_GETADDRINFO_COMPAT)
#include "getaddrinfo.h"
#include "dummyin6.h"
#endif
#ifndef AI_ADDRCONFIG
#define AI_ADDRCONFIG 0 /*IEEE Std 1003.1-2001/Cor 1-2002, item XSH/TC1/D6/20*/
#endif
#include <ccn/ccn.h>
#include <ccn/ccnd.h>
#include <ccn/uri.h>
#include <ccn/signing.h>
#include <ccn/face_mgmt.h>
#include <ccn/reg_mgmt.h>
#include <ccn/strategy_mgmt.h>
#define ON_ERROR_CLEANUP(resval) { \
if ((resval) < 0) { \
if (verbose > 0) ccndc_warn(__LINE__, "OnError cleanup\n"); \
goto Cleanup; \
} \
}
#define ON_NULL_CLEANUP(resval) { \
if ((resval) == NULL) { \
if (verbose > 0) ccndc_warn(__LINE__, "OnNull cleanup\n"); \
goto Cleanup; \
} \
}
#define ON_ERROR_EXIT(resval, msg) { \
int _resval = (resval); \
if (_resval < 0) \
ccndc_fatal(__LINE__, "fatal error, res = %d, %s\n", _resval, msg); \
}
struct ccndc_data *
ccndc_initialize_data(void) {
struct ccndc_data *self;
const char *msg = "Unable to initialize ccndc";
int res;
self = calloc(1, sizeof(*self));
if (self == NULL) {
ON_ERROR_EXIT (-1, msg);
}
self->ccn_handle = ccn_create();
ON_ERROR_EXIT(ccn_connect(self->ccn_handle, NULL), "Unable to connect to local ccnd");
ON_ERROR_EXIT(ccndc_get_ccnd_id(self), "Unable to obtain ID of local ccnd");
/* Set up an Interest template to indicate scope 1 (Local) */
self->local_scope_template = ccn_charbuf_create();
res = ccnb_element_begin(self->local_scope_template, CCN_DTAG_Interest);
res |= ccnb_element_begin(self->local_scope_template, CCN_DTAG_Name);
res |= ccnb_element_end(self->local_scope_template); /* </Name> */
res |= ccnb_tagged_putf(self->local_scope_template, CCN_DTAG_Scope, "1");
res |= ccnb_element_end(self->local_scope_template); /* </Interest> */
ON_ERROR_EXIT(res, msg);
/* Create a null name */
self->no_name = ccn_charbuf_create();
ON_ERROR_EXIT(ccn_name_init(self->no_name), msg);
self->lifetime = (~0U) >> 1;
return self;
}
void
ccndc_destroy_data(struct ccndc_data **data) {
struct ccndc_data *self = *data;
if (self != NULL) {
ccn_charbuf_destroy(&self->no_name);
ccn_charbuf_destroy(&self->local_scope_template);
ccn_destroy(&self->ccn_handle);
free(self);
*data = NULL;
}
}
int
ccndc_dispatch_cmd(struct ccndc_data *ccndc,
int check_only,
const char *cmd,
const char *options,
int num_options)
{
if (strcasecmp(cmd, "add") == 0) {
if (num_options >= 0 && (num_options < 3 || num_options > 7))
return INT_MIN;
return ccndc_add(ccndc, check_only, options);
}
if (strcasecmp(cmd, "del") == 0) {
if (num_options >= 0 && (num_options < 3 || num_options > 7))
return INT_MIN;
return ccndc_del(ccndc, check_only, options);
}
if (strcasecmp(cmd, "create") == 0) {
if (num_options >= 0 && (num_options < 2 || num_options > 5))
return INT_MIN;
return ccndc_create(ccndc, check_only, options);
}
if (strcasecmp(cmd, "destroy") == 0) {
if (num_options >= 0 && (num_options < 2 || num_options > 5))
return INT_MIN;
return ccndc_destroy(ccndc, check_only, options);
}
if (strcasecmp(cmd, "destroyface") == 0) {
if (num_options >= 0 && num_options != 1)
return INT_MIN;
return ccndc_destroyface(ccndc, check_only, options);
}
if (strcasecmp(cmd, "setstrategy") == 0) {
if (num_options >= 0 && (num_options < 2 || num_options > 4))
return INT_MIN;
return ccndc_strategy(ccndc, check_only, STRAT_SET, options);
}
if (strcasecmp(cmd, "getstrategy") == 0) {
if (num_options >= 0 && num_options != 1)
return INT_MIN;
return ccndc_strategy(ccndc, check_only, STRAT_GET, options);
}
if (strcasecmp(cmd, "removestrategy") == 0) {
if (num_options >= 0 && num_options != 1)
return INT_MIN;
return ccndc_strategy(ccndc, check_only, STRAT_REMOVE, options);
}
if (strcasecmp(cmd, "srv") == 0) {
// attempt to guess parameters using SRV record of a domain in search list
if (num_options >= 0 && num_options != 0)
return INT_MIN;
if (check_only) return 0;
return ccndc_srv(ccndc, NULL, 0);
}
if (strcasecmp(cmd, "renew") == 0) {
if (num_options >= 0 && (num_options < 3 || num_options > 7))
return INT_MIN;
return ccndc_renew(ccndc, check_only, options);
}
return INT_MIN;
}
#define GET_NEXT_TOKEN(_cmd, _token_var) do { \
_token_var = strsep(&_cmd, " \t"); \
} while (_token_var != NULL && _token_var[0] == 0);
/*
* uri (udp|tcp) host [port [flags [mcastttl [mcastif]]]])
* uri face faceid
*/
int
ccndc_add(struct ccndc_data *self,
int check_only,
const char *cmd_orig)
{
int ret_code = -1;
char *cmd, *cmd_token;
char *cmd_uri = NULL;
char *cmd_proto = NULL;
char *cmd_host = NULL;
char *cmd_port = NULL;
char *cmd_flags = NULL;
char *cmd_mcastttl = NULL;
char *cmd_mcastif = NULL;
struct ccn_face_instance *face = NULL;
struct ccn_face_instance *newface = NULL;
struct ccn_forwarding_entry *prefix = NULL;
if (cmd_orig == NULL) {
ccndc_warn(__LINE__, "command error\n");
return -1;
}
cmd = strdup(cmd_orig);
if (cmd == NULL) {
ccndc_warn(__LINE__, "Cannot allocate memory for copy of the command\n");
return -1;
}
cmd_token = cmd;
GET_NEXT_TOKEN(cmd_token, cmd_uri);
GET_NEXT_TOKEN(cmd_token, cmd_proto);
GET_NEXT_TOKEN(cmd_token, cmd_host);
GET_NEXT_TOKEN(cmd_token, cmd_port);
GET_NEXT_TOKEN(cmd_token, cmd_flags);
GET_NEXT_TOKEN(cmd_token, cmd_mcastttl);
GET_NEXT_TOKEN(cmd_token, cmd_mcastif);
// perform sanity checking
face = parse_ccn_face_instance(self, cmd_proto, cmd_host, cmd_port,
cmd_mcastttl, cmd_mcastif, (~0U) >> 1);
prefix = parse_ccn_forwarding_entry(self, cmd_uri, cmd_flags, self->lifetime);
if (face == NULL || prefix == NULL)
goto Cleanup;
if (!check_only) {
if (0 != strcasecmp(cmd_proto, "face")) {
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
goto Cleanup;
}
prefix->faceid = newface->faceid;
ccn_face_instance_destroy(&newface);
} else {
prefix->faceid = face->faceid;
}
ret_code = ccndc_do_prefix_action(self, "prefixreg", prefix);
if (ret_code < 0) {
ccndc_warn(__LINE__, "Cannot register prefix [%s]\n", cmd_uri);
goto Cleanup;
}
}
ret_code = 0;
Cleanup:
ccn_face_instance_destroy(&face);
ccn_forwarding_entry_destroy(&prefix);
free(cmd);
return (ret_code);
}
int
ccndc_del(struct ccndc_data *self,
int check_only,
const char *cmd_orig)
{
int ret_code = -1;
char *cmd, *cmd_token;
char *cmd_uri = NULL;
char *cmd_proto = NULL;
char *cmd_host = NULL;
char *cmd_port = NULL;
char *cmd_flags = NULL;
char *cmd_mcastttl = NULL;
char *cmd_mcastif = NULL;
struct ccn_face_instance *face = NULL;
struct ccn_face_instance *newface = NULL;
struct ccn_forwarding_entry *prefix = NULL;
if (cmd_orig == NULL) {
ccndc_warn(__LINE__, "command error\n");
return -1;
}
cmd = strdup(cmd_orig);
if (cmd == NULL) {
ccndc_warn(__LINE__, "Cannot allocate memory for copy of the command\n");
return -1;
}
cmd_token = cmd;
GET_NEXT_TOKEN(cmd_token, cmd_uri);
GET_NEXT_TOKEN(cmd_token, cmd_proto);
GET_NEXT_TOKEN(cmd_token, cmd_host);
GET_NEXT_TOKEN(cmd_token, cmd_port);
GET_NEXT_TOKEN(cmd_token, cmd_flags);
GET_NEXT_TOKEN(cmd_token, cmd_mcastttl);
GET_NEXT_TOKEN(cmd_token, cmd_mcastif);
face = parse_ccn_face_instance(self, cmd_proto, cmd_host, cmd_port,
cmd_mcastttl, cmd_mcastif, (~0U) >> 1);
prefix = parse_ccn_forwarding_entry(self, cmd_uri, cmd_flags, (~0U) >> 1);
if (face == NULL || prefix == NULL)
goto Cleanup;
if (!check_only) {
if (0 != strcasecmp(cmd_proto, "face")) {
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
goto Cleanup;
}
prefix->faceid = newface->faceid;
ccn_face_instance_destroy(&newface);
} else {
prefix->faceid = face->faceid;
}
ret_code = ccndc_do_prefix_action(self, "unreg", prefix);
if (ret_code < 0) {
ccndc_warn(__LINE__, "Cannot unregister prefix [%s]\n", cmd_uri);
goto Cleanup;
}
}
ret_code = 0;
Cleanup:
ccn_face_instance_destroy(&face);
ccn_forwarding_entry_destroy(&prefix);
free(cmd);
return (ret_code);
}
/*
* (udp|tcp) host [port [mcastttl [mcastif]]]
*/
int
ccndc_create(struct ccndc_data *self,
int check_only,
const char *cmd_orig)
{
int ret_code = -1;
char *cmd, *cmd_token;
char *cmd_proto = NULL;
char *cmd_host = NULL;
char *cmd_port = NULL;
char *cmd_mcastttl = NULL;
char *cmd_mcastif = NULL;
struct ccn_face_instance *face = NULL;
struct ccn_face_instance *newface = NULL;
if (cmd_orig == NULL) {
ccndc_warn(__LINE__, "command error\n");
return -1;
}
cmd = strdup(cmd_orig);
if (cmd == NULL) {
ccndc_warn(__LINE__, "Cannot allocate memory for copy of the command\n");
return -1;
}
cmd_token = cmd;
GET_NEXT_TOKEN(cmd_token, cmd_proto);
GET_NEXT_TOKEN(cmd_token, cmd_host);
GET_NEXT_TOKEN(cmd_token, cmd_port);
GET_NEXT_TOKEN(cmd_token, cmd_mcastttl);
GET_NEXT_TOKEN(cmd_token, cmd_mcastif);
// perform sanity checking
face = parse_ccn_face_instance(self, cmd_proto, cmd_host, cmd_port,
cmd_mcastttl, cmd_mcastif, self->lifetime);
if (face == NULL)
goto Cleanup;
if (!check_only) {
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
goto Cleanup;
}
ccn_face_instance_destroy(&newface);
}
ret_code = 0;
Cleanup:
ccn_face_instance_destroy(&face);
free(cmd);
return (ret_code);
}
/*
* (udp|tcp) host [port [mcastttl [mcastif]]]
*/
int
ccndc_destroy(struct ccndc_data *self,
int check_only,
const char *cmd_orig)
{
int ret_code = -1;
char *cmd, *cmd_token;
char *cmd_proto = NULL;
char *cmd_host = NULL;
char *cmd_port = NULL;
char *cmd_mcastttl = NULL;
char *cmd_mcastif = NULL;
struct ccn_face_instance *face = NULL;
struct ccn_face_instance *newface = NULL;
if (cmd_orig == NULL) {
ccndc_warn(__LINE__, "command error\n");
return -1;
}
cmd = strdup(cmd_orig);
if (cmd == NULL) {
ccndc_warn(__LINE__, "Cannot allocate memory for copy of the command\n");
return -1;
}
cmd_token = cmd;
GET_NEXT_TOKEN(cmd_token, cmd_proto);
GET_NEXT_TOKEN(cmd_token, cmd_host);
GET_NEXT_TOKEN(cmd_token, cmd_port);
GET_NEXT_TOKEN(cmd_token, cmd_mcastttl);
GET_NEXT_TOKEN(cmd_token, cmd_mcastif);
// perform sanity checking
face = parse_ccn_face_instance(self, cmd_proto, cmd_host, cmd_port,
cmd_mcastttl, cmd_mcastif, (~0U) >> 1);
if (face == NULL)
goto Cleanup;
if (!check_only) {
// TODO: should use queryface when implemented
if (0 != strcasecmp(cmd_proto, "face")) {
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
goto Cleanup;
}
face->faceid = newface->faceid;
ccn_face_instance_destroy(&newface);
}
newface = ccndc_do_face_action(self, "destroyface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot destroy face %d or the face does not exist\n", face->faceid);
goto Cleanup;
}
ccn_face_instance_destroy(&newface);
}
ret_code = 0;
Cleanup:
ccn_face_instance_destroy(&face);
free(cmd);
return ret_code;
}
int
ccndc_strategy(struct ccndc_data *self,
int check_only,
enum strat_cmd cmd,
const char *options_orig)
{
char *options, *cmd_token;
struct ccn_strategy_selection *strategy = NULL;
struct ccn_strategy_selection *new_strategy = NULL;
struct ccn_charbuf *prefix = NULL;
int ret_code = 0;
char *cmd_prefix = NULL;
char *cmd_strategy = NULL;
char *cmd_params = NULL;
char *cmd_lifetime = NULL;
if (options_orig == NULL) {
ccndc_warn(__LINE__, "command error\n");
return -1;
}
options = strdup(options_orig);
if (options == NULL) {
ccndc_warn(__LINE__, "Cannot allocate memory for copy of the command\n");
return -1;
}
cmd_token = options;
GET_NEXT_TOKEN(cmd_token, cmd_prefix);
if (cmd == STRAT_SET) {
GET_NEXT_TOKEN(cmd_token, cmd_strategy);
GET_NEXT_TOKEN(cmd_token, cmd_params);
GET_NEXT_TOKEN(cmd_token, cmd_lifetime);
}
// sanity check
strategy = parse_ccn_strategy_selection(self, cmd_prefix, cmd_strategy, cmd_params, 0);
if (strategy == NULL)
goto Cleanup;
if (!check_only) {
char *action = NULL;
switch (cmd) {
case STRAT_SET:
action = "setstrategy";
break;
case STRAT_GET:
action = "getstrategy";
break;
case STRAT_REMOVE:
action = "removestrategy";
break;
default:
break;
}
new_strategy = ccndc_do_strategy_action(self, action, strategy);
if (new_strategy == NULL) {
ccndc_warn(__LINE__, "Unable to %s\n", action);
ret_code = -1;
goto Cleanup;
}
prefix = ccn_charbuf_create();
ccn_uri_append(prefix, new_strategy->name_prefix->buf,
new_strategy->name_prefix->length, 0);
printf("Strategy at %s is %s %s\n", ccn_charbuf_as_string(prefix),
new_strategy->strategyid, new_strategy->parameters);
}
ret_code = 0;
Cleanup:
ccn_strategy_selection_destroy(&strategy);
ccn_strategy_selection_destroy(&new_strategy);
ccn_charbuf_destroy(&prefix);
free(options);
return ret_code;
}
/*
* (udp|tcp) host [port [mcastttl [mcastif]]]
*/
/*
* uri (udp|tcp) host [port [flags [mcastttl [mcastif]]]])
* uri face faceid
*/
int
ccndc_renew(struct ccndc_data *self,
int check_only,
const char *cmd_orig)
{
int ret_code = -1;
char *cmd, *cmd_token;
char *cmd_uri = NULL;
char *cmd_proto = NULL;
char *cmd_host = NULL;
char *cmd_port = NULL;
char *cmd_flags = NULL;
char *cmd_mcastttl = NULL;
char *cmd_mcastif = NULL;
struct ccn_face_instance *face = NULL;
struct ccn_face_instance *newface = NULL;
struct ccn_forwarding_entry *prefix = NULL;
if (cmd_orig == NULL) {
ccndc_warn(__LINE__, "command error\n");
return -1;
}
cmd = strdup(cmd_orig);
if (cmd == NULL) {
ccndc_warn(__LINE__, "Cannot allocate memory for copy of the command\n");
return -1;
}
cmd_token = cmd;
GET_NEXT_TOKEN(cmd_token, cmd_uri);
GET_NEXT_TOKEN(cmd_token, cmd_proto);
GET_NEXT_TOKEN(cmd_token, cmd_host);
GET_NEXT_TOKEN(cmd_token, cmd_port);
GET_NEXT_TOKEN(cmd_token, cmd_flags);
GET_NEXT_TOKEN(cmd_token, cmd_mcastttl);
GET_NEXT_TOKEN(cmd_token, cmd_mcastif);
// perform sanity checking
face = parse_ccn_face_instance(self, cmd_proto, cmd_host, cmd_port,
cmd_mcastttl, cmd_mcastif, (~0U) >> 1);
prefix = parse_ccn_forwarding_entry(self, cmd_uri, cmd_flags, self->lifetime);
if (face == NULL || prefix == NULL)
goto Cleanup;
if (!check_only) {
// look up the old face ("queryface" would be useful)
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
goto Cleanup;
}
face->faceid = newface->faceid;
ccn_face_instance_destroy(&newface);
// destroy the old face
newface = ccndc_do_face_action(self, "destroyface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot destroy face %d or the face does not exist\n", face->faceid);
goto Cleanup;
}
ccn_face_instance_destroy(&newface);
// recreate the face
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
goto Cleanup;
}
prefix->faceid = newface->faceid;
ccn_face_instance_destroy(&newface);
// and add the prefix to it
ret_code = ccndc_do_prefix_action(self, "prefixreg", prefix);
if (ret_code < 0) {
ccndc_warn(__LINE__, "Cannot register prefix [%s]\n", cmd_uri);
goto Cleanup;
}
}
ret_code = 0;
Cleanup:
ccn_face_instance_destroy(&face);
ccn_forwarding_entry_destroy(&prefix);
free(cmd);
return (ret_code);
}
int
ccndc_destroyface(struct ccndc_data *self,
int check_only,
const char *cmd_orig)
{
int ret_code = 0;
char *cmd, *cmd_token;
char *cmd_faceid = NULL;
struct ccn_face_instance *face;
struct ccn_face_instance *newface;
if (cmd_orig == NULL) {
ccndc_warn(__LINE__, "command error\n");
return -1;
}
cmd = strdup(cmd_orig);
if (cmd == NULL) {
ccndc_warn(__LINE__, "Cannot allocate memory for copy of the command\n");
return -1;
}
cmd_token = cmd;
GET_NEXT_TOKEN(cmd_token, cmd_faceid);
face = parse_ccn_face_instance_from_face(self, cmd_faceid);
if (face == NULL) {
ret_code = -1;
}
if (ret_code == 0 && check_only == 0) {
newface = ccndc_do_face_action(self, "destroyface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot destroy face %d or the face does not exist\n", face->faceid);
}
ccn_face_instance_destroy(&newface);
}
ccn_face_instance_destroy(&face);
free(cmd);
return ret_code;
}
int
ccndc_srv(struct ccndc_data *self,
const unsigned char *domain,
size_t domain_size)
{
char *proto = NULL;
char *host = NULL;
int port = 0;
char port_str[10];
struct ccn_charbuf *uri;
struct ccn_charbuf *uri_auto = NULL;
struct ccn_face_instance *face;
struct ccn_face_instance *newface;
struct ccn_forwarding_entry *prefix;
struct ccn_forwarding_entry *prefix_auto;
int res;
res = ccndc_query_srv(domain, domain_size, &host, &port, &proto);
if (res < 0) {
return -1;
}
uri = ccn_charbuf_create();
ccn_charbuf_append_string(uri, "ccnx:/");
if (domain_size != 0) {
ccn_uri_append_percentescaped(uri, domain, domain_size);
}
snprintf (port_str, sizeof(port_str), "%d", port);
/* now process the results */
/* pflhead, lineno=0, "add" "ccnx:/asdfasdf.com/" "tcp|udp", host, portstring, NULL NULL NULL */
ccndc_note(__LINE__, " >>> trying: add %s %s %s %s <<<\n", ccn_charbuf_as_string(uri), proto, host, port_str);
face = parse_ccn_face_instance(self, proto, host, port_str, NULL, NULL,
(~0U) >> 1);
prefix = parse_ccn_forwarding_entry(self, ccn_charbuf_as_string(uri), NULL,
self->lifetime);
if (face == NULL || prefix == NULL) {
res = -1;
goto Cleanup;
}
// crazy operation
// First. "Create" face, which will do nothing if face already exists
// Second. Destroy the face
// Third. Create face for real
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
res = -1;
goto Cleanup;
}
face->faceid = newface->faceid;
ccn_face_instance_destroy(&newface);
newface = ccndc_do_face_action(self, "destroyface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot destroy face\n");
} else {
ccn_face_instance_destroy(&newface);
}
newface = ccndc_do_face_action(self, "newface", face);
if (newface == NULL) {
ccndc_warn(__LINE__, "Cannot create/lookup face\n");
res = -1;
goto Cleanup;
}
prefix->faceid = newface->faceid;
ccn_face_instance_destroy(&newface);
res = ccndc_do_prefix_action(self, "prefixreg", prefix);
if (res < 0) {
ccndc_warn(__LINE__, "Cannot register prefix [%s]\n", ccn_charbuf_as_string(uri));
}
uri_auto = ccn_charbuf_create();
ccn_charbuf_append_string(uri_auto, "ccnx:/autoconf-route");
prefix_auto = parse_ccn_forwarding_entry(self, ccn_charbuf_as_string(uri_auto), NULL,
self->lifetime);
if (prefix_auto == NULL) {
res = -1;
goto Cleanup;
}
prefix_auto->faceid = prefix->faceid;
res = ccndc_do_prefix_action(self, "prefixreg", prefix_auto);
if (res < 0) {
ccndc_warn(__LINE__, "Cannot register prefix_auto [%s]\n", ccn_charbuf_as_string(uri_auto));
}
Cleanup:
free(host);
ccn_charbuf_destroy(&uri);
ccn_charbuf_destroy(&uri_auto);
ccn_face_instance_destroy(&face);
ccn_forwarding_entry_destroy(&prefix);
ccn_forwarding_entry_destroy(&prefix_auto);
return res;
}
struct ccn_forwarding_entry *
parse_ccn_forwarding_entry(struct ccndc_data *self,
const char *cmd_uri,
const char *cmd_flags,
int freshness)
{
int res = 0;
struct ccn_forwarding_entry *entry;
entry= calloc(1, sizeof(*entry));
if (entry == NULL) {
ccndc_warn(__LINE__, "Fatal error: memory allocation failed\n");
goto ExitOnError;
}
entry->name_prefix = ccn_charbuf_create();
if (entry->name_prefix == NULL) {
ccndc_warn(__LINE__, "Fatal error: memory allocation failed\n");
goto ExitOnError;
}
// copy static info
entry->ccnd_id = (const unsigned char *)self->ccnd_id;
entry->ccnd_id_size = self->ccnd_id_size;
/* we will be creating the face to either add/delete a prefix on it */
if (cmd_uri == NULL) {
ccndc_warn(__LINE__, "command erro, missing CCNx URI\n");
goto ExitOnError;
}
res = ccn_name_from_uri(entry->name_prefix, cmd_uri);
if (res < 0) {
ccndc_warn(__LINE__, "command error, bad CCNx URI '%s'\n", cmd_uri);
goto ExitOnError;
}
entry->flags = -1;
if (cmd_flags != NULL && cmd_flags[0] != 0) {
char *endptr;
entry->flags = strtol(cmd_flags, &endptr, 10);
if ((endptr != &cmd_flags[strlen(cmd_flags)]) ||
(entry->flags & ~CCN_FORW_PUBMASK) != 0) {
ccndc_warn(__LINE__, "command error, invalid flags %s\n", cmd_flags);
goto ExitOnError;
}
}
entry->lifetime = freshness;
return (entry);
ExitOnError:
ccn_forwarding_entry_destroy(&entry);
return (NULL);
}
// 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\n");
goto ExitOnError;
}
// allocate storage for Face data
entry->store = ccn_charbuf_create();
if (entry->store == NULL) {
ccndc_warn(__LINE__, "Fatal error: memory allocation failed\n");
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\n");
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\n");
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 multicast 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\n");
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;
}