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#include <iso646.h> /* or, not */
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#include <stdbool.h> /* bool, false, true */
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#include <string.h> /* strlen, rindex, strncmp, strcmp */
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#include <getopt.h> /* getopt_long */
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#include <argp.h> /* struct argp_option,
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struct argp_state, struct argp,
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volatile bool quit_now = false;
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bool debug = false;
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const char *argp_program_version = "passprompt 0.9";
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const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
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static void termination_handler(__attribute__((unused))int signum){
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struct sigaction old_action,
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new_action = { .sa_handler = termination_handler,
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static struct option long_options[] = {
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{"debug", no_argument, (int *)&debug, 1},
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{"prefix", required_argument, 0, 'p'},
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ret = getopt_long (argc, argv, "p:", long_options, &option_index);
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fprintf(stderr, "bad arguments\n");
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struct argp_option options[] = {
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{ .name = "prefix", .key = 'p',
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.arg = "PREFIX", .flags = 0,
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.doc = "Prefix used before the passprompt", .group = 2 },
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{ .name = "debug", .key = 128,
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.doc = "Debug mode", .group = 3 },
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error_t parse_opt (int key, char *arg, struct argp_state *state) {
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/* Get the INPUT argument from `argp_parse', which we know is a
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pointer to our plugin list pointer. */
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return ARGP_ERR_UNKNOWN;
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struct argp argp = { .options = options, .parser = parse_opt,
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.doc = "Mandos Passprompt -- Provides a passprompt" };
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argp_parse (&argp, argc, argv, 0, 0, NULL);
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fprintf(stderr, "Starting %s\n", argv[0]);