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Viewing changes to plugins.d/password-prompt.c

  • Committer: Björn Påhlsson
  • Date: 2008-08-25 07:53:43 UTC
  • mto: (237.7.1 mandos) (24.1.154 mandos)
  • mto: This revision was merged to the branch mainline in revision 107.
  • Revision ID: belorn@braxen-20080825075343-a7gsy6mkam9t1up9
added configfile as a optional argument to plugin-runner

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Lines of Context:
plugins.d/password-prompt.c
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                                   sigaction, sigemptyset(),
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                                   sigaction(), sigaddset(), SIGINT,
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                                   SIGQUIT, SIGHUP, SIGTERM */
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#include <stddef.h>             /* NULL, size_t */
 
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#include <stddef.h>             /* NULL, size_t, ssize_t */
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#include <sys/types.h>          /* ssize_t */
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#include <stdlib.h>             /* EXIT_SUCCESS, EXIT_FAILURE,
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                                   getopt_long */
 
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                                   getopt_long, getenv() */
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#include <stdio.h>              /* fprintf(), stderr, getline(),
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                                   stdin, feof(), perror(), fputc(),
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                                   stdout, getopt_long */
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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 <argp.h>               /* struct argp_option,
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                                   struct argp_state, struct argp,
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                                   argp_parse() */
 
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#include <argp.h>               /* struct argp_option, struct
 
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                                   argp_state, struct argp,
 
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                                   argp_parse(), error_t,
 
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                                   ARGP_KEY_ARG, ARGP_KEY_END,
 
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                                   ARGP_ERR_UNKNOWN */
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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_version = "password-prompt 1.0";
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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 argp argp = { .options = options, .parser = parse_opt,
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                         .args_doc = "",
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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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    ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
 
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    if (ret == ARGP_ERR_UNKNOWN){
 
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      fprintf(stderr, "Unknown error while parsing arguments\n");
 
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      return EXIT_FAILURE;
 
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    }
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  }
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  if (debug){
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  sigaddset(&new_action.sa_mask, SIGINT);
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  sigaddset(&new_action.sa_mask, SIGHUP);
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  sigaddset(&new_action.sa_mask, SIGTERM);
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  sigaction(SIGINT, NULL, &old_action);
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  if (old_action.sa_handler != SIG_IGN)
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    sigaction(SIGINT, &new_action, NULL);
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  sigaction(SIGHUP, NULL, &old_action);
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  if (old_action.sa_handler != SIG_IGN)
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    sigaction(SIGHUP, &new_action, NULL);
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  sigaction(SIGTERM, NULL, &old_action);
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  if (old_action.sa_handler != SIG_IGN)
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    sigaction(SIGTERM, &new_action, NULL);
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  ret = sigaction(SIGINT, NULL, &old_action);
 
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  if(ret == -1){
 
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    perror("sigaction");
 
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    return EXIT_FAILURE;
 
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  }
 
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  if (old_action.sa_handler != SIG_IGN){
 
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    ret = sigaction(SIGINT, &new_action, NULL);
 
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    if(ret == -1){
 
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      perror("sigaction");
 
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      return EXIT_FAILURE;
 
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    }
 
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  }
 
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  ret = sigaction(SIGHUP, NULL, &old_action);
 
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  if(ret == -1){
 
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    perror("sigaction");
 
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    return EXIT_FAILURE;
 
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  }
 
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  if (old_action.sa_handler != SIG_IGN){
 
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    ret = sigaction(SIGHUP, &new_action, NULL);
 
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    if(ret == -1){
 
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      perror("sigaction");
 
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      return EXIT_FAILURE;
 
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    }
 
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  }
 
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  ret = sigaction(SIGTERM, NULL, &old_action);
 
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  if(ret == -1){
 
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    perror("sigaction");
 
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    return EXIT_FAILURE;
 
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  }
 
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  if (old_action.sa_handler != SIG_IGN){
 
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    ret = sigaction(SIGTERM, &new_action, NULL);
 
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    if(ret == -1){
 
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      perror("sigaction");
 
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      return EXIT_FAILURE;
 
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    }
 
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  }
 
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  if (debug){
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    fprintf(stderr, "Removing echo flag from terminal attributes\n");
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    }
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    if(prefix){
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      fprintf(stderr, "%s Password: ", prefix);
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    } else {
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      fprintf(stderr, "Password: ");
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    }      
 
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      fprintf(stderr, "%s ", prefix);
 
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    }
 
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    {
 
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      const char *cryptsource = getenv("cryptsource");
 
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      const char *crypttarget = getenv("crypttarget");
 
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      const char *const prompt
 
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        = "Enter passphrase to unlock the disk";
 
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      if(cryptsource == NULL){
 
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        if(crypttarget == NULL){
 
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          fprintf(stderr, "%s: ", prompt);
 
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        } else {
 
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          fprintf(stderr, "%s (%s): ", prompt, crypttarget);
 
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        }
 
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      } else {
 
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        if(crypttarget == NULL){
 
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          fprintf(stderr, "%s %s: ", prompt, cryptsource);
 
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        } else {
 
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          fprintf(stderr, "%s %s (%s): ", prompt, cryptsource,
 
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                  crypttarget);
 
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        }
 
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      }
 
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    }
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    ret = getline(&buffer, &n, stdin);
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    if (ret > 0){
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      fprintf(stdout, "%s", buffer);