136 lines
3.3 KiB
C
136 lines
3.3 KiB
C
/*
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* Copyright (c) 2017 Reyk Floeter <reyk@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <err.h>
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#include "main.h"
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#include "http.h"
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#include "xml.h"
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static int cloudinit_fetch(struct system_config *);
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static char *cloudinit_get(struct system_config *, const char *,
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enum strtype);
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int
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ec2(struct system_config *sc)
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{
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if ((sc->sc_username = strdup("ec2-user")) == NULL ||
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(sc->sc_endpoint = strdup("169.254.169.254")) == NULL) {
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log_warnx("failed to set defaults");
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return (-1);
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}
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return (cloudinit_fetch(sc));
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}
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int
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cloudinit(struct system_config *sc)
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{
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/* XXX get endpoint from DHCP lease file */
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if ((sc->sc_username = strdup("puffy")) == NULL ||
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(sc->sc_endpoint = strdup("169.254.169.254")) == NULL) {
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log_warnx("failed to set defaults");
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return (-1);
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}
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return (cloudinit_fetch(sc));
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}
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static char *
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cloudinit_get(struct system_config *sc, const char *path, enum strtype type)
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{
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struct httpget *g = NULL;
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char *str = NULL;
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log_debug("%s: %s", __func__, path);
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g = http_get(&sc->sc_addr, 1,
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sc->sc_endpoint, 80, path, NULL, 0, NULL);
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if (g != NULL && g->code == 200 && g->bodypartsz > 0) {
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switch (type) {
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case TEXT:
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/* multi-line string, always printable */
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str = get_string(g->bodypart, g->bodypartsz);
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break;
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case LINE:
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str = get_line(g->bodypart, g->bodypartsz);
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break;
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case WORD:
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str = get_word(g->bodypart, g->bodypartsz);
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break;
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}
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log_debug("%s: '%s'", __func__, str);
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}
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http_get_free(g);
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return (str);
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}
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static int
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cloudinit_fetch(struct system_config *sc)
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{
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int ret = 0;
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char *str = NULL;
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sc->sc_addr.ip = sc->sc_endpoint;
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sc->sc_addr.family = 4;
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/* instance-id */
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if ((sc->sc_instance = cloudinit_get(sc,
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"/latest/meta-data/instance-id", WORD)) == NULL)
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goto fail;
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/* hostname */
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if ((sc->sc_hostname = cloudinit_get(sc,
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"/latest/meta-data/local-hostname", WORD)) == NULL)
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goto fail;
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/* pubkey */
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if ((str = cloudinit_get(sc,
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"/latest/meta-data/public-keys/0/openssh-key", LINE)) == NULL)
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goto fail;
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if (agent_addpubkey(sc, str, NULL) != 0)
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goto fail;
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/* optional username - this is an extension by meta-data(8) */
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if ((str = cloudinit_get(sc,
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"/latest/meta-data/username", WORD)) != NULL) {
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free(sc->sc_username);
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sc->sc_username = str;
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str = NULL;
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}
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/* userdata */
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if ((sc->sc_userdata = cloudinit_get(sc,
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"/latest/user-data", TEXT)) == NULL)
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goto fail;
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ret = 0;
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fail:
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free(str);
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return (ret);
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}
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