err, the last time this came up you said you would do it right... :)

http://marc.info/?l=openbsd-misc&m=125613898224309&w=2

On Tue, Nov 30, 2010 at 5:16 AM, Marco Peereboom <[email protected]> wrote:
> I like this.
>
> On Mon, Nov 29, 2010 at 02:22:35PM -0800, Chris Kuethe wrote:
>> Currently bioctl invokes readpassphrase(3) with RPP_REQUIRE_TTY, which
>> means that there must be a controlling tty to read the password from.
>> This diff adds an option (-s) to force bioctl to read the passphrase
>> from stdin. Without this option existing behavior is maintained.
>>
>> Index: bioctl.8
>> ===================================================================
>> RCS file: /cvs/src/sbin/bioctl/bioctl.8,v
>> retrieving revision 1.82
>> diff -u -p -r1.82 bioctl.8
>> --- bioctl.8  20 Nov 2010 17:46:24 -0000      1.82
>> +++ bioctl.8  29 Nov 2010 22:17:03 -0000
>> @@ -43,7 +43,7 @@
>>  .Pp
>>  .Nm bioctl
>>  .Bk -words
>> -.Op Fl dhiPqv
>> +.Op Fl dhiPqsv
>>  .Op Fl C Ar flag[,flag,...]
>>  .Op Fl c Ar raidlevel
>>  .Op Fl k Ar keydisk
>> @@ -235,6 +235,11 @@ the PBKDF2 algorithm used to convert a p
>>  Higher iteration counts take more time, but offer more resistance to key
>>  guessing attacks.
>>  The minimum is 1000 rounds and the default is 8192.
>> +.It Fl s
>> +Read the passphrase for the selected crypto volume from
>> +.Pa /dev/stdin
>> +rather than
>> +.Pa /dev/tty .
>>  .El
>>  .Sh EXAMPLES
>>  The following command, executed from the command line, would configure
>> Index: bioctl.c
>> ===================================================================
>> RCS file: /cvs/src/sbin/bioctl/bioctl.c,v
>> retrieving revision 1.97
>> diff -u -p -r1.97 bioctl.c
>> --- bioctl.c  10 Jul 2010 02:56:16 -0000      1.97
>> +++ bioctl.c  29 Nov 2010 22:17:03 -0000
>> @@ -86,6 +86,7 @@ int                 rflag = 8192;
>>  char                 *password;
>>
>>  struct bio_locate    bl;
>> +int rpp_flag = RPP_REQUIRE_TTY;
>>
>>  int
>>  main(int argc, char *argv[])
>> @@ -106,7 +107,7 @@ main(int argc, char *argv[])
>>       if (argc < 2)
>>               usage();
>>
>> -     while ((ch = getopt(argc, argv, "a:b:C:c:dH:hik:l:Pp:qr:R:vu:")) !=
>> +     while ((ch = getopt(argc, argv, "a:b:C:c:dH:hik:l:Pp:qr:R:svu:")) !=
>>           -1) {
>>               switch (ch) {
>>               case 'a': /* alarm */
>> @@ -174,6 +175,9 @@ main(int argc, char *argv[])
>>                       ss_func = BIOC_SSREBUILD;
>>                       al_arg = optarg;
>>                       break;
>> +             case 's':
>> +                     rpp_flag = RPP_STDIN;
>> +                     break;
>>               case 'v':
>>                       verbose = 1;
>>                       break;
>> @@ -252,12 +256,12 @@ usage(void)
>>               "[-R device | channel:target[.lun]\n"
>>               "\t[-u channel:target[.lun]] "
>>               "device\n"
>> -                "       %s [-dhiPqv] "
>> -                "[-C flag[,flag,...]] [-c raidlevel] [-k keydisk]\n"
>> -                "\t[-l special[,special,...]] [-p passfile]\n"
>> -                "\t[-R device | channel:target[.lun] [-r rounds] "
>> +             "       %s [-dhiPqsv] "
>> +             "[-C flag[,flag,...]] [-c raidlevel] [-k keydisk]\n"
>> +             "\t[-l special[,special,...]] [-p passfile]\n"
>> +             "\t[-R device | channel:target[.lun] [-r rounds] "
>>               "device\n", __progname, __progname);
>> -
>> +
>>       exit(1);
>>  }
>>
>> @@ -1070,14 +1074,14 @@ derive_key_pkcs(int rounds, u_int8_t *ke
>>               fclose(f);
>>       } else {
>>               if (readpassphrase(prompt, passphrase, sizeof(passphrase),
>> -                 RPP_REQUIRE_TTY) == NULL)
>> +                 rpp_flag) == NULL)
>>                       errx(1, "unable to read passphrase");
>>       }
>>
>>       if (verify) {
>>               /* request user to re-type it */
>>               if (readpassphrase("Re-type passphrase: ", verifybuf,
>> -                 sizeof(verifybuf), RPP_REQUIRE_TTY) == NULL) {
>> +                 sizeof(verifybuf), rpp_flag) == NULL) {
>>                       memset(passphrase, 0, sizeof(passphrase));
>>                       errx(1, "unable to read passphrase");
>>               }
>>
>> --
>> GDB has a 'break' feature; why doesn't it have 'fix' too?

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