cloud-agent/agent/openstack.c
2018-01-10 15:10:58 +01:00

100 lines
2.4 KiB
C

/*
* Copyright (c) 2018 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/queue.h>
#include <sys/stat.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <err.h>
#include "main.h"
#include "http.h"
#include "xml.h"
static int openstack_fetch(struct system_config *);
int
openstack(struct system_config *sc)
{
if ((dhcp_getendpoint(sc) == -1) &&
(sc->sc_endpoint = strdup(DEFAULT_ENDPOINT)) == NULL) {
log_warnx("failed to set defaults");
return (-1);
}
if (openstack_fetch(sc) != 0) {
free(sc->sc_endpoint);
return (cloudinit(sc));
}
return (0);
}
static int
openstack_fetch(struct system_config *sc)
{
int ret = -1;
char *json = NULL, *str;
struct jsmnn *j = NULL, *o, *f;
size_t i;
sc->sc_addr.ip = sc->sc_endpoint;
sc->sc_addr.family = 4;
/* meta_data, we don't handle vendor_data */
if ((json = metadata(sc,
"/openstack/latest/meta_data.json", TEXT)) == NULL)
goto fail;
if ((j = json_parse(json, strlen(json))) == NULL)
goto fail;
/* instance-id */
if ((sc->sc_instance = json_getstr(j, "uuid")) == NULL)
goto fail;
/* hostname */
if ((sc->sc_hostname = json_getstr(j, "hostname")) == NULL)
goto fail;
/* public keys */
if ((o = json_getarray(j, "keys")) == NULL)
goto fail;
for (i = 0; i < o->fields; i++) {
if ((f = json_getarrayobj(o->d.array[i])) == NULL)
continue;
if ((str = json_getstr(f, "data")) == NULL)
continue;
if (agent_addpubkey(sc, str, NULL) != 0) {
free(str);
goto fail;
}
free(str);
}
/* userdata (optional) */
sc->sc_userdata = metadata(sc, "/openstack/latest/user_data", TEXT);
ret = 0;
fail:
json_free(j);
free(json);
return (ret);
}