/mandos/release

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

  • Committer: Teddy Hogeborn
  • Date: 2008-08-31 13:55:04 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080831135504-2ka1cccglsghslxy
* plugin-runner.xml (/refentry/refentryinfo/copyright): Split
                                                        copyright
                                                        holders.
* plugins.d/password-request.xml (/refentry/refentryinfo/copyright):
                                 Split copyright holders.

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removed removed

Lines of Context:
plugins.d/password-request.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
 
35
 
#define _GNU_SOURCE             /* TEMP_FAILURE_RETRY() */
 
35
#define _GNU_SOURCE             /* TEMP_FAILURE_RETRY(), asprintf() */
36
36
 
37
 
#include <stdio.h>              /* fprintf(), stderr, fwrite(), stdout,
38
 
                                   ferror() */
 
37
#include <stdio.h>              /* fprintf(), stderr, fwrite(),
 
38
                                   stdout, ferror() */
39
39
#include <stdint.h>             /* uint16_t, uint32_t */
40
40
#include <stddef.h>             /* NULL, size_t, ssize_t */
41
41
#include <stdlib.h>             /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
42
                                   srand() */
43
43
#include <stdbool.h>            /* bool, true */
44
44
#include <string.h>             /* memset(), strcmp(), strlen(),
45
 
                                   strerror(), memcpy(), strcpy() */
 
45
                                   strerror(), asprintf(), strcpy() */
46
46
#include <sys/ioctl.h>          /* ioctl */
47
47
#include <sys/types.h>          /* socket(), inet_pton(), sockaddr,
48
48
                                   sockaddr_in6, PF_INET6,
81
81
#include <avahi-common/error.h>
82
82
 
83
83
/* GnuTLS */
84
 
#include <gnutls/gnutls.h>      /* All GnuTLS types, constants and functions
 
84
#include <gnutls/gnutls.h>      /* All GnuTLS types, constants and
 
85
                                   functions:
85
86
                                   gnutls_*
86
87
                                   init_gnutls_session(),
87
88
                                   GNUTLS_* */
89
90
                                   GNUTLS_OPENPGP_FMT_BASE64 */
90
91
 
91
92
/* GPGME */
92
 
#include <gpgme.h>              /* All GPGME types, constants and functions
 
93
#include <gpgme.h>              /* All GPGME types, constants and
 
94
                                   functions:
93
95
                                   gpgme_*
94
96
                                   GPGME_PROTOCOL_OpenPGP,
95
97
                                   GPG_ERR_NO_* */
212
214
    fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
213
215
            gpgme_strsource(rc), gpgme_strerror(rc));
214
216
    plaintext_length = -1;
 
217
    if (debug){
 
218
      gpgme_decrypt_result_t result;
 
219
      result = gpgme_op_decrypt_result(ctx);
 
220
      if (result == NULL){
 
221
        fprintf(stderr, "gpgme_op_decrypt_result failed\n");
 
222
      } else {
 
223
        fprintf(stderr, "Unsupported algorithm: %s\n",
 
224
                result->unsupported_algorithm);
 
225
        fprintf(stderr, "Wrong key usage: %u\n",
 
226
                result->wrong_key_usage);
 
227
        if(result->file_name != NULL){
 
228
          fprintf(stderr, "File name: %s\n", result->file_name);
 
229
        }
 
230
        gpgme_recipient_t recipient;
 
231
        recipient = result->recipients;
 
232
        if(recipient){
 
233
          while(recipient != NULL){
 
234
            fprintf(stderr, "Public key algorithm: %s\n",
 
235
                    gpgme_pubkey_algo_name(recipient->pubkey_algo));
 
236
            fprintf(stderr, "Key ID: %s\n", recipient->keyid);
 
237
            fprintf(stderr, "Secret key available: %s\n",
 
238
                    recipient->status == GPG_ERR_NO_SECKEY
 
239
                    ? "No" : "Yes");
 
240
            recipient = recipient->next;
 
241
          }
 
242
        }
 
243
      }
 
244
    }
215
245
    goto decrypt_end;
216
246
  }
217
247
  
219
249
    fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
220
250
  }
221
251
  
222
 
  if (debug){
223
 
    gpgme_decrypt_result_t result;
224
 
    result = gpgme_op_decrypt_result(ctx);
225
 
    if (result == NULL){
226
 
      fprintf(stderr, "gpgme_op_decrypt_result failed\n");
227
 
    } else {
228
 
      fprintf(stderr, "Unsupported algorithm: %s\n",
229
 
              result->unsupported_algorithm);
230
 
      fprintf(stderr, "Wrong key usage: %u\n",
231
 
              result->wrong_key_usage);
232
 
      if(result->file_name != NULL){
233
 
        fprintf(stderr, "File name: %s\n", result->file_name);
234
 
      }
235
 
      gpgme_recipient_t recipient;
236
 
      recipient = result->recipients;
237
 
      if(recipient){
238
 
        while(recipient != NULL){
239
 
          fprintf(stderr, "Public key algorithm: %s\n",
240
 
                  gpgme_pubkey_algo_name(recipient->pubkey_algo));
241
 
          fprintf(stderr, "Key ID: %s\n", recipient->keyid);
242
 
          fprintf(stderr, "Secret key available: %s\n",
243
 
                  recipient->status == GPG_ERR_NO_SECKEY
244
 
                  ? "No" : "Yes");
245
 
          recipient = recipient->next;
246
 
        }
247
 
      }
248
 
    }
249
 
  }
250
 
  
251
252
  /* Seek back to the beginning of the GPGME plaintext data buffer */
252
253
  if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
253
254
    perror("pgpme_data_seek");
300
301
}
301
302
 
302
303
static const char * safer_gnutls_strerror (int value) {
303
 
  const char *ret = gnutls_strerror (value);
 
304
  const char *ret = gnutls_strerror (value); /* Spurious warning */
304
305
  if (ret == NULL)
305
306
    ret = "(unknown)";
306
307
  return ret;
313
314
}
314
315
 
315
316
static int init_gnutls_global(mandos_context *mc,
316
 
                              const char *pubkeyfile,
317
 
                              const char *seckeyfile){
 
317
                              const char *pubkeyfilename,
 
318
                              const char *seckeyfilename){
318
319
  int ret;
319
320
  
320
321
  if(debug){
339
340
  /* OpenPGP credentials */
340
341
  gnutls_certificate_allocate_credentials(&mc->cred);
341
342
  if (ret != GNUTLS_E_SUCCESS){
342
 
    fprintf (stderr, "GnuTLS memory error: %s\n",
 
343
    fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
 
344
                                                     warning */
343
345
             safer_gnutls_strerror(ret));
344
346
    gnutls_global_deinit ();
345
347
    return -1;
347
349
  
348
350
  if(debug){
349
351
    fprintf(stderr, "Attempting to use OpenPGP certificate %s"
350
 
            " and keyfile %s as GnuTLS credentials\n", pubkeyfile,
351
 
            seckeyfile);
 
352
            " and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
 
353
            seckeyfilename);
352
354
  }
353
355
  
354
356
  ret = gnutls_certificate_set_openpgp_key_file
355
 
    (mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
 
357
    (mc->cred, pubkeyfilename, seckeyfilename,
 
358
     GNUTLS_OPENPGP_FMT_BASE64);
356
359
  if (ret != GNUTLS_E_SUCCESS) {
357
360
    fprintf(stderr,
358
361
            "Error[%d] while reading the OpenPGP key pair ('%s',"
359
 
            " '%s')\n", ret, pubkeyfile, seckeyfile);
 
362
            " '%s')\n", ret, pubkeyfilename, seckeyfilename);
360
363
    fprintf(stdout, "The GnuTLS error is: %s\n",
361
364
            safer_gnutls_strerror(ret));
362
365
    goto globalfail;
472
475
    fprintf(stderr, "Binding to interface %s\n", interface);
473
476
  }
474
477
  
475
 
  memset(&to,0,sizeof(to));     /* Spurious warning */
 
478
  memset(&to, 0, sizeof(to));
476
479
  to.in6.sin6_family = AF_INET6;
477
480
  /* It would be nice to have a way to detect if we were passed an
478
481
     IPv4 address here.   Now we assume an IPv6 address. */
632
635
    } else {
633
636
      retval = -1;
634
637
    }
 
638
  } else {
 
639
    retval = -1;
635
640
  }
636
641
  
637
642
  /* Shutdown procedure */
658
663
                             flags,
659
664
                             void* userdata) {
660
665
  mandos_context *mc = userdata;
661
 
  assert(r);                    /* Spurious warning */
 
666
  assert(r);
662
667
  
663
668
  /* Called whenever a service has been resolved successfully or
664
669
     timed out */
682
687
      }
683
688
      int ret = start_mandos_communication(ip, port, interface, mc);
684
689
      if (ret == 0){
685
 
        exit(EXIT_SUCCESS);
 
690
        avahi_simple_poll_quit(mc->simple_poll);
686
691
      }
687
692
    }
688
693
  }
700
705
                             flags,
701
706
                             void* userdata) {
702
707
  mandos_context *mc = userdata;
703
 
  assert(b);                    /* Spurious warning */
 
708
  assert(b);
704
709
  
705
710
  /* Called whenever a new services becomes available on the LAN or
706
711
     is removed from the LAN */
742
747
 
743
748
/* Combines file name and path and returns the malloced new
744
749
   string. some sane checks could/should be added */
745
 
static const char *combinepath(const char *first, const char *second){
746
 
  size_t f_len = strlen(first);
747
 
  size_t s_len = strlen(second);
748
 
  char *tmp = malloc(f_len + s_len + 2);
749
 
  if (tmp == NULL){
 
750
static char *combinepath(const char *first, const char *second){
 
751
  char *tmp;
 
752
  int ret = asprintf(&tmp, "%s/%s", first, second);
 
753
  if(ret < 0){
750
754
    return NULL;
751
755
  }
752
 
  if(f_len > 0){
753
 
    memcpy(tmp, first, f_len);  /* Spurious warning */
754
 
  }
755
 
  tmp[f_len] = '/';
756
 
  if(s_len > 0){
757
 
    memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
758
 
  }
759
 
  tmp[f_len + 1 + s_len] = '\0';
760
756
  return tmp;
761
757
}
762
758
 
773
769
    gid_t gid;
774
770
    char *connect_to = NULL;
775
771
    AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
776
 
    const char *pubkeyfile = "pubkey.txt";
777
 
    const char *seckeyfile = "seckey.txt";
 
772
    char *pubkeyfilename = NULL;
 
773
    char *seckeyfilename = NULL;
 
774
    const char *pubkeyname = "pubkey.txt";
 
775
    const char *seckeyname = "seckey.txt";
778
776
    mandos_context mc = { .simple_poll = NULL, .server = NULL,
779
777
                          .dh_bits = 1024, .priority = "SECURE256"};
780
778
    bool gnutls_initalized = false;
832
830
          keydir = arg;
833
831
          break;
834
832
        case 's':
835
 
          seckeyfile = arg;
 
833
          seckeyname = arg;
836
834
          break;
837
835
        case 'p':
838
 
          pubkeyfile = arg;
 
836
          pubkeyname = arg;
839
837
          break;
840
838
        case 129:
841
839
          errno = 0;
850
848
          break;
851
849
        case ARGP_KEY_ARG:
852
850
          argp_usage (state);
 
851
        case ARGP_KEY_END:
853
852
          break;
854
 
          case ARGP_KEY_END:
855
 
            break;
856
853
        default:
857
854
          return ARGP_ERR_UNKNOWN;
858
855
        }
871
868
      }
872
869
    }
873
870
      
874
 
    pubkeyfile = combinepath(keydir, pubkeyfile);
875
 
    if (pubkeyfile == NULL){
 
871
    pubkeyfilename = combinepath(keydir, pubkeyname);
 
872
    if (pubkeyfilename == NULL){
876
873
      perror("combinepath");
877
874
      exitcode = EXIT_FAILURE;
878
875
      goto end;
879
876
    }
880
877
    
881
 
    seckeyfile = combinepath(keydir, seckeyfile);
882
 
    if (seckeyfile == NULL){
 
878
    seckeyfilename = combinepath(keydir, seckeyname);
 
879
    if (seckeyfilename == NULL){
883
880
      perror("combinepath");
884
881
      exitcode = EXIT_FAILURE;
885
882
      goto end;
886
883
    }
887
884
 
888
 
    ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
 
885
    ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
889
886
    if (ret == -1){
890
887
      fprintf(stderr, "init_gnutls_global failed\n");
891
888
      exitcode = EXIT_FAILURE;
902
899
        exitcode = EXIT_FAILURE;
903
900
        goto end;
904
901
      }
905
 
      strcpy(network.ifr_name, interface); /* Spurious warning */
 
902
      strcpy(network.ifr_name, interface);
906
903
      ret = ioctl(sd, SIOCGIFFLAGS, &network);
907
904
      if(ret == -1){
908
905
        perror("ioctl SIOCGIFFLAGS");
1044
1041
 
1045
1042
    if (mc.simple_poll != NULL)
1046
1043
        avahi_simple_poll_free(mc.simple_poll);
1047
 
    free(pubkeyfile);
1048
 
    free(seckeyfile);
 
1044
    free(pubkeyfilename);
 
1045
    free(seckeyfilename);
1049
1046
 
1050
1047
    if (gnutls_initalized){
1051
1048
      gnutls_certificate_free_credentials(mc.cred);