44
44
#include <stdint.h> /* uint16_t, uint32_t */
45
45
#include <stddef.h> /* NULL, size_t, ssize_t */
46
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
47
srand(), strtof(), abort() */
48
48
#include <stdbool.h> /* bool, false, true */
49
49
#include <string.h> /* memset(), strcmp(), strlen(),
50
50
strerror(), asprintf(), strcpy() */
73
73
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
74
74
getuid(), getgid(), seteuid(),
76
76
#include <arpa/inet.h> /* inet_pton(), htons */
77
77
#include <iso646.h> /* not, or, and */
78
78
#include <argp.h> /* struct argp_option, error_t, struct
82
82
#include <signal.h> /* sigemptyset(), sigaddset(),
83
83
sigaction(), SIGTERM, sig_atomic_t,
85
#include <sysexits.h> /* EX_OSERR, EX_USAGE */
88
87
#include <sys/klog.h> /* klogctl() */
1057
1056
.arg = "SECONDS",
1058
1057
.doc = "Maximum delay to wait for interface startup",
1061
* These reproduce what we would get without ARGP_NO_HELP
1063
{ .name = "help", .key = '?',
1064
.doc = "Give this help list", .group = -1 },
1065
{ .name = "usage", .key = -3,
1066
.doc = "Give a short usage message", .group = -1 },
1067
{ .name = "version", .key = 'V',
1068
.doc = "Print program version", .group = -1 },
1069
1059
{ .name = NULL }
1072
1062
error_t parse_opt(int key, char *arg,
1073
1063
struct argp_state *state){
1076
1065
case 128: /* --debug */
1093
1082
tmpmax = strtoimax(arg, &tmp, 10);
1094
1083
if(errno != 0 or tmp == arg or *tmp != '\0'
1095
1084
or tmpmax != (typeof(mc.dh_bits))tmpmax){
1096
argp_error(state, "Bad number of DH bits");
1085
fprintf(stderr, "Bad number of DH bits\n");
1098
1088
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
1105
1095
delay = strtof(arg, &tmp);
1106
1096
if(errno != 0 or tmp == arg or *tmp != '\0'){
1107
argp_error(state, "Bad delay");
1097
fprintf(stderr, "Bad delay\n");
1111
* These reproduce what we would get without ARGP_NO_HELP
1113
case '?': /* --help */
1114
argp_state_help(state, state->out_stream,
1115
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
1116
& ~(unsigned int)ARGP_HELP_EXIT_OK);
1117
case -3: /* --usage */
1118
argp_state_help(state, state->out_stream,
1119
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1120
case 'V': /* --version */
1121
fprintf(state->out_stream, "%s\n", argp_program_version);
1122
exit(argp_err_exit_status);
1125
1106
return ARGP_ERR_UNKNOWN;
1130
1111
struct argp argp = { .options = options, .parser = parse_opt,
1131
1112
.args_doc = "",
1132
1113
.doc = "Mandos client -- Get and decrypt"
1133
1114
" passwords from a Mandos server" };
1134
ret = argp_parse(&argp, argc, argv,
1135
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
1142
perror("argp_parse");
1143
exitcode = EX_OSERR;
1146
exitcode = EX_USAGE;
1115
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1116
if(ret == ARGP_ERR_UNKNOWN){
1117
fprintf(stderr, "Unknown error while parsing arguments\n");
1118
exitcode = EXIT_FAILURE;
1249
1221
#ifdef __linux__
1250
1222
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1251
messages about the network interface to mess up the prompt */
1223
messages to mess up the prompt */
1252
1224
ret = klogctl(8, NULL, 5);
1253
1225
bool restore_loglevel = true;
1559
1531
perror("ioctl SIOCGIFFLAGS");
1560
1532
} else if(network.ifr_flags & IFF_UP) {
1561
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1533
network.ifr_flags &= ~IFF_UP; /* clear flag */
1562
1534
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1564
1536
perror("ioctl SIOCSIFFLAGS");
1625
1597
sigemptyset(&old_sigterm_action.sa_mask);
1626
1598
old_sigterm_action.sa_handler = SIG_DFL;
1627
ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
1628
&old_sigterm_action,
1599
ret = sigaction(signal_received, &old_sigterm_action, NULL);
1631
1601
perror("sigaction");
1634
ret = raise(signal_received);
1635
} while(ret != 0 and errno == EINTR);
1640
TEMP_FAILURE_RETRY(pause());
1603
raise(signal_received);
1643
1606
return exitcode;