33
33
sigaction, sigemptyset(),
34
34
sigaction(), sigaddset(), SIGINT,
35
35
SIGQUIT, SIGHUP, SIGTERM */
36
#include <stddef.h> /* NULL, size_t, ssize_t */
36
#include <stddef.h> /* NULL, size_t */
37
37
#include <sys/types.h> /* ssize_t */
38
38
#include <stdlib.h> /* EXIT_SUCCESS, EXIT_FAILURE,
44
44
#include <iso646.h> /* or, not */
45
45
#include <stdbool.h> /* bool, false, true */
46
46
#include <string.h> /* strlen, rindex, strncmp, strcmp */
47
#include <argp.h> /* struct argp_option, struct
48
argp_state, struct argp,
49
argp_parse(), error_t,
50
ARGP_KEY_ARG, ARGP_KEY_END,
47
#include <getopt.h> /* getopt_long */
53
49
volatile bool quit_now = false;
54
50
bool debug = false;
55
const char *argp_program_version = "passprompt 0.9";
56
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
58
52
static void termination_handler(__attribute__((unused))int signum){
69
63
struct sigaction old_action,
70
64
new_action = { .sa_handler = termination_handler,
73
struct argp_option options[] = {
74
{ .name = "prefix", .key = 'p',
75
.arg = "PREFIX", .flags = 0,
76
.doc = "Prefix used before the passprompt", .group = 2 },
77
{ .name = "debug", .key = 128,
78
.doc = "Debug mode", .group = 3 },
82
error_t parse_opt (int key, char *arg, struct argp_state *state) {
83
/* Get the INPUT argument from `argp_parse', which we know is a
84
pointer to our plugin list pointer. */
98
return ARGP_ERR_UNKNOWN;
68
static struct option long_options[] = {
69
{"debug", no_argument, (int *)&debug, 1},
70
{"prefix", required_argument, 0, 'p'},
74
ret = getopt_long (argc, argv, "p:", long_options, &option_index);
103
struct argp argp = { .options = options, .parser = parse_opt,
105
.doc = "Mandos Passprompt -- Provides a passprompt" };
106
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
107
if (ret == ARGP_ERR_UNKNOWN){
108
perror("argp_parse");
87
fprintf(stderr, "bad arguments\n");
114
93
fprintf(stderr, "Starting %s\n", argv[0]);
125
104
sigaddset(&new_action.sa_mask, SIGINT);
126
105
sigaddset(&new_action.sa_mask, SIGHUP);
127
106
sigaddset(&new_action.sa_mask, SIGTERM);
128
ret = sigaction(SIGINT, NULL, &old_action);
133
if (old_action.sa_handler != SIG_IGN){
134
ret = sigaction(SIGINT, &new_action, NULL);
140
ret = sigaction(SIGHUP, NULL, &old_action);
145
if (old_action.sa_handler != SIG_IGN){
146
ret = sigaction(SIGHUP, &new_action, NULL);
152
ret = sigaction(SIGTERM, NULL, &old_action);
157
if (old_action.sa_handler != SIG_IGN){
158
ret = sigaction(SIGTERM, &new_action, NULL);
107
sigaction(SIGINT, NULL, &old_action);
108
if (old_action.sa_handler != SIG_IGN)
109
sigaction(SIGINT, &new_action, NULL);
110
sigaction(SIGHUP, NULL, &old_action);
111
if (old_action.sa_handler != SIG_IGN)
112
sigaction(SIGHUP, &new_action, NULL);
113
sigaction(SIGTERM, NULL, &old_action);
114
if (old_action.sa_handler != SIG_IGN)
115
sigaction(SIGTERM, &new_action, NULL);
167
119
fprintf(stderr, "Removing echo flag from terminal attributes\n");