/
pivy-ca.c
1535 lines (1322 loc) · 34.5 KB
/
pivy-ca.c
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/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Copyright (c) 2021, The University of Queensland
* Author: Alex Wilson <alex@uq.edu.au>
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <stdint.h>
#include <stddef.h>
#include <errno.h>
#include <strings.h>
#include <limits.h>
#include <err.h>
#include <ctype.h>
#include "debug.h"
#if defined(__APPLE__)
#include <PCSC/wintypes.h>
#include <PCSC/winscard.h>
#else
#include <wintypes.h>
#include <winscard.h>
#endif
#include <sys/types.h>
#include <sys/errno.h>
#if defined(__sun)
#include <sys/fork.h>
#endif
#include <sys/wait.h>
#include <sys/stat.h>
#include "openssh/config.h"
#include "openssh/sshkey.h"
#include "openssh/sshbuf.h"
#include "openssh/digest.h"
#include "openssh/ssherr.h"
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/pem.h>
#include <json.h>
int PEM_write_X509(FILE *fp, X509 *x);
#include "utils.h"
#include "tlv.h"
#include "piv.h"
#include "bunyan.h"
#include "utils.h"
#include "pkinit_asn1.h"
#include "piv-ca.h"
#include "ebox-cmd.h"
/* We need the piv_cert_comp enum */
#include "piv-internal.h"
#if defined(__sun) || defined(__APPLE__)
#include <netinet/in.h>
#define be16toh(v) (ntohs(v))
#else
#include <endian.h>
#endif
#if !defined(JSONC_14)
size_t json_tokener_get_parse_end(struct json_tokener *);
/* compat version will be defined by piv-ca.c on <=0.14 */
#endif
boolean_t debug = B_FALSE;
static struct cert_var_scope *root_scope = NULL;
static struct piv_ctx *ctx;
static boolean_t output_json = B_FALSE;
#ifndef LINT
#define funcerrf(cause, fmt, ...) \
errf(__func__, cause, fmt , ##__VA_ARGS__)
#define pcscerrf(call, rv) \
errf("PCSCError", NULL, call " failed: %d (%s)", \
rv, pcsc_stringify_error(rv))
#endif
enum pivca_exit_status {
/*EXIT_OK = 0,
EXIT_USAGE = 1,
EXIT_ERROR = 2,
EXIT_INTERACTIVE = 3,
EXIT_PIN = 4,
EXIT_PIN_LOCKED = 5,
EXIT_ALREADY_UNLOCKED = 6,*/
EXIT_NO_CARD = 7,
EXIT_IO_ERROR = 8,
EXIT_BAD_ARGS = EXIT_USAGE,
};
static const uint8_t DEFAULT_ADMIN_KEY[] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08
};
#if defined(__sun)
const char *
_umem_debug_init()
{
return ("guards");
}
#endif
void
usage(void)
{
fprintf(stderr,
"usage: pivy-ca [options] <operation>\n"
"\n"
"Operates an X.509 CA with key stored on a PIV card\n"
"\n"
"Available operations:\n"
" setup Create a new CA with an empty PIV card\n"
" shell Start a shell in a pivy-agent for the CA\n"
" show Show info about the CA\n"
" list-tpl List base templates known to pivy-ca\n"
" sign-config Re-sign config JSON\n"
" sign-req [path] [tpl] Sign a CSR (cert request) from path or stdin\n"
" revoke-cert [path] Revoke a certificate\n"
" revoke-serial [hex] Revoke using just a serial number\n"
" sign-crl Signs a new CRL for the CA\n"
" rotate-pin Generates a new PIN for the CA card\n"
"\n"
"General options:\n"
" -p <path> Path to dir containing pivy-ca.json\n"
" -D <key=value> Defines a certificate variable\n"
" -J <path> Path to a JSON file containing cert vars\n"
" -j Output in JSON format (from e.g. sign-req)\n"
" -d Enable debug logging\n"
"\n");
exit(EXIT_BAD_ARGS);
}
static errf_t *
ensure_authed(struct ca *ca, struct ca_session *sess)
{
errf_t *err;
enum piv_pin type;
struct ebox *box;
uint8_t *k;
size_t klen;
char pin[16];
if (ca_session_authed(sess))
return (ERRF_OK);
fprintf(stderr, "Unlocking PIN for CA '%s'...\n", ca_slug(ca));
type = ca_session_auth_type(sess);
box = ca_get_ebox(ca, CA_EBOX_PIN);
err = interactive_unlock_ebox(box, ca_slug(ca));
if (err != ERRF_OK) {
err = errf("CAPINError", err, "failed to unlock PIN for CA");
return (err);
}
k = (uint8_t *)ebox_key(box, &klen);
VERIFY(klen < sizeof (pin));
bzero(pin, sizeof (pin));
bcopy(k, pin, klen);
/* Just in case there's a newline or other whitespace after the PIN */
while (isspace(pin[klen - 1])) {
--klen;
pin[klen] = '\0';
}
err = ca_session_auth(sess, type, pin);
explicit_bzero(pin, sizeof (pin));
return (err);
}
errf_t *read_text_file(const char *path, char **out, size_t *outlen);
struct cvpriv {
struct cert_var *cvp_cv;
struct answer *cvp_ans;
};
static errf_t *
prompt_scope(struct cert_var_scope *scope)
{
errf_t *err;
char *line;
struct question *q;
struct answer *a;
struct answer *issue_ans;
struct cert_var *all, *var;
struct cvpriv *p;
char k = '1';
boolean_t issue_in = B_FALSE;
uint undef = 0;
char *tmp;
uint qinit;
undef = 0;
all = scope_all_vars(scope);
for (var = all; var != NULL; var = cert_var_next(var)) {
if (!cert_var_required(var, REQUIRED_FOR_CERT))
continue;
if (!cert_var_defined(var))
++undef;
}
if (undef == 0)
return (ERRF_OK);
qa_term_setup();
q = calloc(1, sizeof (struct question));
VERIFY(q != NULL);
question_printf(q, "-- Certificate variables --\n");
question_printf(q, "Some certificate variables required for this "
"template are not yet defined.\n");
qinit = q->q_used;
issue_ans = make_answer('.', "Issue certificate");
prompt:
undef = 0;
q->q_used = qinit;
all = scope_all_vars(scope);
for (var = all; var != NULL; var = cert_var_next(var)) {
if (!cert_var_required(var, REQUIRED_FOR_CERT))
continue;
if (!cert_var_defined(var))
++undef;
}
question_printf(q, "\n-- Available pre-defined variables --\n");
question_printf(q, " %-16s %-40s %-40s\n",
"VARIABLE", "RAW VALUE", "EVALUATION");
for (var = all; var != NULL; var = cert_var_next(var)) {
if (!cert_var_defined(var))
continue;
tmp = cert_var_value(var);
question_printf(q, " %-16s %-40s",
cert_var_name(var),
tmp == NULL ? "(undefined)" : tmp);
free(tmp);
err = cert_var_eval(var, &tmp);
if (err != ERRF_OK) {
errf_free(err);
question_printf(q, " (error)\n");
} else {
question_printf(q, " %-40s\n", tmp);
free(tmp);
}
}
question_printf(q, "\n-- Required variables --\n");
question_printf(q, " %-16s %-40s %-40s",
"VARIABLE", "RAW VALUE", "EVALUATION");
for (var = all; var != NULL; var = cert_var_next(var)) {
if (!cert_var_required(var, REQUIRED_FOR_CERT))
continue;
p = cert_var_private(var);
if (!cert_var_defined(var) && p == NULL) {
p = cert_var_alloc_private(var, sizeof (struct cvpriv));
VERIFY(p != NULL);
p->cvp_cv = var;
tmp = cert_var_value(var);
p->cvp_ans = make_answer(k++, "%-16s %-40s",
cert_var_name(var),
tmp == NULL ? "(undefined)" : tmp);
free(tmp);
p->cvp_ans->a_priv = p;
add_answer(q, p->cvp_ans);
err = cert_var_eval(var, &tmp);
if (err != ERRF_OK) {
errf_free(err);
answer_printf(p->cvp_ans, " (error)");
} else {
answer_printf(p->cvp_ans, " %-40s", tmp);
free(tmp);
}
if (k > '9' && k < 'a')
k = 'a';
} else if (p != NULL) {
p->cvp_ans->a_used = 0;
tmp = cert_var_value(var);
answer_printf(p->cvp_ans, "%-16s %-40s",
cert_var_name(var),
tmp == NULL ? "(undefined)" : tmp);
free(tmp);
err = cert_var_eval(var, &tmp);
if (err != ERRF_OK) {
errf_free(err);
answer_printf(p->cvp_ans, " (error)");
} else {
answer_printf(p->cvp_ans, " %-40s", tmp);
free(tmp);
}
}
}
if (undef == 0 && !issue_in) {
add_command(q, issue_ans);
issue_in = B_TRUE;
} else if (undef > 0 && issue_in) {
remove_command(q, issue_ans);
issue_in = B_FALSE;
}
again:
question_prompt(q, &a);
if (a != issue_ans) {
p = a->a_priv;
var = p->cvp_cv;
line = readline("New value? ");
if (line == NULL)
exit(EXIT_ERROR);
if (strlen(line) < 1)
goto again;
err = cert_var_set(var, line);
if (err != ERRF_OK) {
warnfx(err, "failed to set %s", cert_var_name(var));
errf_free(err);
}
err = scope_set(root_scope, cert_var_name(var), line);
if (err != ERRF_OK) {
warnfx(err, "failed to set %s", cert_var_name(var));
errf_free(err);
}
goto prompt;
}
err = ERRF_OK;
for (var = all; var != NULL; var = cert_var_next(var)) {
cert_var_free_private(var);
}
question_free(q);
return (err);
}
static int
is_uninit(struct piv_token *tok)
{
const struct piv_fascn *fascn;
const struct piv_chuid *chuid;
chuid = piv_token_chuid(tok);
if (chuid == NULL)
return (1);
if (piv_chuid_is_signed(chuid))
return (0);
fascn = piv_chuid_get_fascn(chuid);
if (fascn == NULL)
return (1);
if (strcmp(piv_fascn_get_agency_code(fascn), "0000") != 0 &&
strcmp(piv_fascn_get_system_code(fascn), "0000") != 0 &&
strcmp(piv_fascn_get_cred_number(fascn), "000000") != 0)
return (0);
if (strcmp(piv_chuid_get_guidhex(chuid),
"00000000000000000000000000000000") == 0)
return (1);
return (0);
}
static errf_t *
cmd_setup(const char *ca_path)
{
/*
* collect info:
* - CA's DN,
* - CRL URLs
* - constraints (e.g. nameconstraints)
* - CRL timing settings
* - key gen settings
*
* provision config:
* - pin, puk and admin key
* - require attestation? choose attestation CAs
* - templates and slots
* - variable definitions (and free variables)
*/
struct ca_new_args *cna;
X509_NAME *dn, *newdn;
struct ebox_tpl *tpl;
struct ca *ca;
struct piv_token *tokens, *tok;
errf_t *err;
char *line;
struct question *q;
struct answer *a;
enum piv_alg alg = PIV_ALG_RSA2048;
char *pin_tpl_name = NULL, *puk_tpl_name = NULL,
*backup_tpl_name = NULL;
char *lifetime = strdup("20y");
char *dnstr = strdup("cn=Example CA");
struct ebox_tpl *pin_tpl = NULL, *puk_tpl = NULL, *backup_tpl = NULL;
struct answer *dn_ans, *life_ans, *alg_ans, *pin_tpl_ans, *puk_tpl_ans,
*backup_tpl_ans, *cont_ans;
err = piv_enumerate(ctx, &tokens);
if (err)
errfx(EXIT_IO_ERROR, err, "failed to enumerate PIV tokens");
if (tokens == NULL)
errx(EXIT_NO_CARD, "no PIV cards/tokens found");
for (tok = tokens; tok != NULL; tok = piv_token_next(tok)) {
if (is_uninit(tok))
break;
}
if (tok == NULL || !is_uninit(tok))
errx(EXIT_NO_CARD, "no uninit'd PIV token/card found");
fprintf(stderr, "Setting up new CA in device '%s'...\n",
piv_token_rdrname(tok));
dn = X509_NAME_new();
err = parse_dn(dnstr, dn);
VERIFY(err == ERRF_OK);
qa_term_setup();
parse_tpl_path_env();
q = calloc(1, sizeof (struct question));
VERIFY(q != NULL);
question_printf(q, "-- CA configuration --\n");
dn_ans = make_answer('1', "CA DN: %s", dnstr);
alg_ans = make_answer('2', "Private key type: %s",
piv_alg_to_string(alg));
life_ans = make_answer('3', "Lifetime: %s", lifetime);
pin_tpl_ans = make_answer('4', "Ebox template for PIN: %s",
pin_tpl == NULL ? "(none)" : pin_tpl_name);
puk_tpl_ans = make_answer('5', "Ebox template for PUK: %s",
puk_tpl == NULL ? "(none)" : puk_tpl_name);
backup_tpl_ans = make_answer('6', "Ebox template for key backup: %s",
backup_tpl == NULL ? "(none)" : backup_tpl_name);
cont_ans = make_answer('c', "Continue");
add_answer(q, dn_ans);
add_answer(q, alg_ans);
add_answer(q, life_ans);
add_answer(q, pin_tpl_ans);
add_answer(q, puk_tpl_ans);
add_answer(q, backup_tpl_ans);
add_command(q, cont_ans);
again:
question_prompt(q, &a);
if (a == dn_ans) {
line = readline("CA DN? ");
if (line == NULL)
exit(EXIT_ERROR);
newdn = X509_NAME_new();
err = parse_dn(line, newdn);
if (err != ERRF_OK) {
warnfx(err, "failed to parse DN");
X509_NAME_free(newdn);
errf_free(err);
goto again;
}
free(dnstr);
X509_NAME_free(dn);
dnstr = line;
dn = newdn;
a->a_used = 0;
answer_printf(a, "CA DN: %s", dnstr);
goto again;
} else if (a == life_ans) {
unsigned long secs;
line = readline("Lifetime? ");
if (line == NULL)
exit(EXIT_ERROR);
err = parse_lifetime(line, &secs);
if (err != ERRF_OK) {
warnfx(err, "failed to parse lifetime");
errf_free(err);
free(line);
goto again;
}
free(lifetime);
lifetime = line;
a->a_used = 0;
answer_printf(a, "Lifetime: %s", lifetime);
goto again;
} else if (a == alg_ans) {
line = readline("Private key type? ");
if (line == NULL)
exit(EXIT_ERROR);
err = piv_alg_from_string(line, &alg);
free(line);
if (err) {
warnfx(err, "error parsing input");
errf_free(err);
}
a->a_used = 0;
answer_printf(a, "Private key type: %s",
piv_alg_to_string(alg));
goto again;
} else if (a == pin_tpl_ans) {
line = readline("PIN template? ");
if (line == NULL)
exit(EXIT_ERROR);
err = read_tpl_file_err(line, &tpl);
if (err) {
warnfx(err, "error parsing input");
errf_free(err);
free(line);
} else {
pin_tpl = tpl;
pin_tpl_name = line;
}
a->a_used = 0;
answer_printf(a, "Ebox template for PIN: %s", pin_tpl_name);
goto again;
} else if (a == puk_tpl_ans) {
line = readline("PUK template? ");
if (line == NULL)
exit(EXIT_ERROR);
err = read_tpl_file_err(line, &tpl);
if (err) {
warnfx(err, "error parsing input");
errf_free(err);
free(line);
} else {
puk_tpl = tpl;
puk_tpl_name = line;
}
a->a_used = 0;
answer_printf(a, "Ebox template for PUK: %s", puk_tpl_name);
goto again;
} else if (a == backup_tpl_ans) {
line = readline("Backup template? ");
if (line == NULL)
exit(EXIT_ERROR);
err = read_tpl_file_err(line, &tpl);
if (err) {
warnfx(err, "error parsing input");
errf_free(err);
free(line);
} else {
backup_tpl = tpl;
backup_tpl_name = line;
}
a->a_used = 0;
answer_printf(a, "Ebox template for PUK: %s", backup_tpl_name);
goto again;
} else if (a == cont_ans) {
if (pin_tpl == NULL) {
fprintf(stderr, "error: PIN template required\n");
goto again;
}
if (puk_tpl == NULL) {
fprintf(stderr, "error: PUK template required\n");
goto again;
}
if (backup_tpl == NULL) {
fprintf(stderr, "error: backup template required\n");
goto again;
}
} else {
goto again;
}
scope_set(root_scope, "lifetime", lifetime);
cna = cana_new();
cana_scope(cna, root_scope);
cana_initial_pin(cna, "123456");
cana_initial_puk(cna, "12345678");
cana_initial_admin_key(cna, PIV_ALG_3DES, DEFAULT_ADMIN_KEY, 24);
cana_key_alg(cna, alg);
cana_dn(cna, dn);
cana_pin_tpl(cna, pin_tpl_name, pin_tpl);
cana_backup_tpl(cna, backup_tpl_name, backup_tpl);
cana_puk_tpl(cna, puk_tpl_name, puk_tpl);
fprintf(stderr, "Generating and signing initial CA configuration...\n");
err = ca_generate(ca_path, cna, tok, &ca);
if (err)
return (err);
ca_close(ca);
return (ERRF_OK);
}
struct log_iter_state {
size_t lis_issued;
size_t lis_revoked;
size_t lis_crls;
char *lis_last_crl;
char *lis_last_issue_json;
};
static void
log_iter(json_object *entry, void *cookie)
{
struct log_iter_state *s = cookie;
json_object *obj;
const char *action;
obj = json_object_object_get(entry, "action");
if (obj == NULL)
return;
action = json_object_get_string(obj);
if (action == NULL)
return;
if (strcmp(action, "issue_cert") == 0) {
++s->lis_issued;
free(s->lis_last_issue_json);
json_object_object_del(entry, "prev_hash");
json_object_object_del(entry, "signature");
json_object_object_del(entry, "action");
json_object_object_del(entry, "time_secs");
s->lis_last_issue_json = strdup(json_object_get_string(entry));
} else if (strcmp(action, "revoke_cert") == 0) {
++s->lis_revoked;
} else if (strcmp(action, "gen_crl") == 0) {
++s->lis_crls;
free(s->lis_last_crl);
obj = json_object_object_get(entry, "time");
s->lis_last_crl = strdup(json_object_get_string(obj));
}
}
static errf_t *
cmd_list_tpl(const char *ca_path, const char *tpl_name)
{
const struct cert_tpl *tpl;
struct cert_var *all, *var;
if (tpl_name == NULL)
tpl = cert_tpl_first();
else
tpl = cert_tpl_find(tpl_name);
for (; tpl != NULL; tpl = cert_tpl_next(tpl)) {
fprintf(stderr, "-- Base template '%s' --\n",
cert_tpl_name(tpl));
fprintf(stderr, "Name: %s\n",
cert_tpl_name(tpl));
if (cert_tpl_help(tpl) != NULL) {
fprintf(stderr, "Help text: %s\n",
cert_tpl_help(tpl));
}
all = cert_tpl_vars(tpl);
fprintf(stderr, "\n -- Parameters --\n");
for (var = all; var != NULL; var = cert_var_next(var)) {
fprintf(stderr, " Name: %s\n",
cert_var_name(var));
if (cert_var_required(var, REQUIRED_FOR_CERT))
fprintf(stderr, " Required: yes\n");
fprintf(stderr, " Help: %s\n",
cert_var_help(var));
fprintf(stderr, "\n");
}
cert_var_free_all(all);
fprintf(stderr, "\n");
if (tpl_name != NULL)
break;
}
return (ERRF_OK);
}
static errf_t *
cmd_show(const char *ca_path)
{
struct ca *ca;
char *dn;
uint i;
struct log_iter_state s;
errf_t *err;
struct ca_cert_tpl *tpl;
struct cert_var_scope *ca_scope, *cert_scope;
enum ca_cert_tpl_flags flags;
struct cert_var *all, *var;
const struct cert_tpl *ctpl;
err = ca_open(ca_path, &ca);
if (err != ERRF_OK)
return (err);
dn = ca_dn(ca);
fprintf(stderr, "Using pivy-ca in '%s'\n\n", ca_path);
fprintf(stderr, "-- CA properties --\n");
fprintf(stderr, "DN: %s\n", dn);
free(dn);
fprintf(stderr, "Slug: %s\n", ca_slug(ca));
fprintf(stderr, "GUID: %s\n", ca_guidhex(ca));
for (i = 0; i < ca_crl_uri_count(ca); ++i) {
fprintf(stderr, "CRL: %s\n", ca_crl_uri(ca, i));
}
for (i = 0; i < ca_ocsp_uri_count(ca); ++i) {
fprintf(stderr, "OCSP: %s\n", ca_ocsp_uri(ca, i));
}
fprintf(stderr, "\nPublic key:\n");
VERIFY0(sshkey_write(ca_pubkey(ca), stderr));
fprintf(stderr, "\n\n-- CA log --\n");
bzero(&s, sizeof (s));
err = ca_log_verify(ca, NULL, log_iter, &s);
fprintf(stderr, "Issued: %zu\n", s.lis_issued);
fprintf(stderr, "Revoked: %zu\n", s.lis_revoked);
fprintf(stderr, "CRLs generated: %zu\n", s.lis_crls);
fprintf(stderr, "Last CRL: %s\n",
s.lis_last_crl == NULL ? "(never)" : s.lis_last_crl);
fprintf(stderr, "Last issue: %s\n",
s.lis_last_issue_json == NULL ? "(none)" : s.lis_last_issue_json);
free(s.lis_last_crl);
free(s.lis_last_issue_json);
if (err != ERRF_OK) {
warnfx(err, "CA log failed to verify");
errf_free(err);
}
ca_scope = ca_make_scope(ca, root_scope);
VERIFY(ca_scope != NULL);
tpl = ca_cert_tpl_first(ca);
for (; tpl != NULL; tpl = ca_cert_tpl_next(tpl)) {
fprintf(stderr, "\n-- Cert Template '%s' --\n",
ca_cert_tpl_name(tpl));
if (ca_cert_tpl_help(tpl) != NULL) {
fprintf(stderr, "Help text: %s\n",
ca_cert_tpl_help(tpl));
}
flags = ca_cert_tpl_flags(tpl);
fprintf(stderr, "Flags: ");
if (flags & CCTF_SELF_SIGNED)
fprintf(stderr, "self-signed ");
if (flags & CCTF_ALLOW_REQS)
fprintf(stderr, "allow-reqs ");
if (flags & CCTF_COPY_DN)
fprintf(stderr, "copy-DN ");
if (flags & CCTF_COPY_KP)
fprintf(stderr, "copy-KPs ");
if (flags & CCTF_COPY_SAN)
fprintf(stderr, "copy-SANs ");
if (flags & CCTF_COPY_OTHER_EXTS)
fprintf(stderr, "copy-extensions ");
if (flags & CCTF_KEY_BACKUP)
fprintf(stderr, "key-backup ");
if (flags & CCTF_HOST_KEYGEN)
fprintf(stderr, "host-keygen");
fprintf(stderr, "\n");
ctpl = ca_cert_tpl_tpl(tpl);
fprintf(stderr, "Base template: %s\n", cert_tpl_name(ctpl));
fprintf(stderr, "Parameters: ");
cert_scope = ca_cert_tpl_make_scope(tpl, ca_scope);
VERIFY(cert_scope != NULL);
all = scope_all_vars(cert_scope);
for (var = all; var != NULL; var = cert_var_next(var)) {
if (!cert_var_required(var, REQUIRED_FOR_CERT))
continue;
if (cert_var_defined(var))
continue;
fprintf(stderr, "%s ", cert_var_name(var));
}
fprintf(stderr, "\n");
}
ca_close(ca);
return (ERRF_OK);
}
static errf_t *
cmd_shell(const char *ca_path, int is_child)
{
errf_t *err;
struct ca *ca;
const char *shell = "sh";
const char *tmp;
char *argv[16];
uint i = 0;
struct sshbuf *buf;
int rc;
pid_t kid, waited;
struct ca_session *sess;
int stat;
buf = sshbuf_new();
VERIFY(buf != NULL);
err = ca_open(ca_path, &ca);
if (err != ERRF_OK)
return (err);
tmp = getenv("SHELL");
if (tmp != NULL)
shell = tmp;
if (is_child) {
fprintf(stderr, "Agent started, ready to auth...\n");
err = ca_open_session(ca, &sess);
if (err != ERRF_OK)
return (err);
err = ensure_authed(ca, sess);
if (err != ERRF_OK)
return (err);
ca_close_session(sess);
fprintf(stderr, "Starting shell '%s'\n", shell);
kid = fork();
if (kid < 0) {
err = errfno("fork", errno, "forking child");
return (err);
}
if (kid == 0) {
argv[i++] = strdup("env");
argv[i++] = strdup("PIVY_CA_SHELL=yes");
argv[i++] = strdup(shell);
argv[i++] = NULL;
rc = execvp("env", argv);
if (rc < 0) {
err = errfno("execv", errno, "executing pivy-agent");
return (err);
}
}
waited = waitpid(kid, &stat, 0);
VERIFY3U(waited, ==, kid);
if (WIFSIGNALED(stat)) {
err = errf("ChildCrashed", NULL, "Shell child process "
"exited on signal %d", WTERMSIG(stat));
return (err);
}
if (WEXITSTATUS(stat) != 0) {
err = errf("ChildExitStatus", NULL, "Shell child "
"process exited with status %d", WEXITSTATUS(stat));
return (err);
}
fprintf(stderr, "Rotating CA PIN...\n");
unsetenv("SSH_AUTH_SOCK");
err = ca_open_session(ca, &sess);
if (err != ERRF_OK) {
err = errf("PINRotateError", err, "failed to open"
"session with card to rotate PIN");
return (err);
}
err = ensure_authed(ca, sess);
if (err != ERRF_OK)
return (err);
err = ca_rotate_pin(sess);
if (err != ERRF_OK)
return (err);
ca_close_session(sess);
ca_close(ca);
} else {
rc = sshkey_format_text(ca_cak(ca), buf);
if (rc != 0) {
err = ssherrf("sshkey_format_text", rc);
return (err);
}
argv[i++] = strdup("pivy-agent");
argv[i++] = strdup("-g");
argv[i++] = strdup(ca_guidhex(ca));
argv[i++] = strdup("-K");
argv[i++] = sshbuf_dup_string(buf);
argv[i++] = strdup("--");
argv[i++] = strdup("pivy-ca");
argv[i++] = strdup("-K");
argv[i++] = strdup("shell");
argv[i++] = NULL;
rc = execvp("pivy-agent", argv);
if (rc < 0) {
err = errfno("execv", errno, "executing pivy-agent");
return (err);
}
}
return (ERRF_OK);
}
static errf_t *
cmd_sign_config(const char *ca_path)
{
errf_t *err;
struct ca *ca;
struct ca_session *sess;
(void) setenv("PIVY_CA_UNSIGNED", "yes-i-really-want-no-security", 0);
err = ca_open(ca_path, &ca);
if (err != ERRF_OK)
return (err);
err = ca_open_session(ca, &sess);
if (err != ERRF_OK)
return (err);
err = ensure_authed(ca, sess);
if (err != ERRF_OK)
return (err);
err = ca_config_write(ca, sess);
if (err != ERRF_OK)
return (err);
ca_close_session(sess);
ca_close(ca);
return (ERRF_OK);
}
static errf_t *
cmd_rotate_pin(const char *ca_path)
{
errf_t *err;
struct ca *ca;
struct ca_session *sess;
err = ca_open(ca_path, &ca);
if (err != ERRF_OK)
return (err);
err = ca_open_session(ca, &sess);
if (err != ERRF_OK)
return (err);
err = ensure_authed(ca, sess);
if (err != ERRF_OK)
return (err);
err = ca_rotate_pin(sess);
if (err != ERRF_OK)
return (err);
ca_close_session(sess);
ca_close(ca);
return (ERRF_OK);
}
static errf_t *
cmd_sign_crl(const char *ca_path)
{
errf_t *err;
struct ca *ca;
struct ca_session *sess;
X509_CRL *crl;
err = ca_open(ca_path, &ca);
if (err != ERRF_OK)
return (err);
err = ca_open_session(ca, &sess);
if (err != ERRF_OK)
return (err);
err = ensure_authed(ca, sess);
if (err != ERRF_OK)
return (err);
crl = X509_CRL_new();
VERIFY(crl != NULL);