Mercurial > dropbear
annotate dbhelpers.c @ 1499:2d450c1056e3
options: Complete the transition to numeric toggles (`#if')
For the sake of review, this commit alters only the code; the affiliated
comments within the source files also need to be updated, but doing so
now would obscure the operational changes that have been made here.
* All on/off options have been switched to the numeric `#if' variant;
that is the only way to make this `default_options.h.in' thing work
in a reasonable manner.
* There is now some very minor compile-time checking of the user's
choice of options.
* NO_FAST_EXPTMOD doesn't seem to be used, so it has been removed.
* ENABLE_USER_ALGO_LIST was supposed to be renamed DROPBEAR_USER_ALGO_LIST,
and this commit completes that work.
* DROPBEAR_FUZZ seems to be a relatively new, as-yet undocumented option,
which was added by the following commit:
commit 6e0b539e9ca0b5628c6c5a3d118ad6a2e79e8039
Author: Matt Johnston <[email protected]>
Date: Tue May 23 22:29:21 2017 +0800
split out checkpubkey_line() separately
It has now been added to `sysoptions.h' and defined as `0' by default.
* The configuration option `DROPBEAR_PASSWORD_ENV' is no longer listed in
`default_options.h.in'; it is no longer meant to be set by the user, and
is instead left to be defined in `sysoptions.h' (where it was already being
defined) as merely the name of the environment variable in question:
DROPBEAR_PASSWORD
To enable or disable use of that environment variable, the user must now
toggle `DROPBEAR_USE_DROPBEAR_PASSWORD'.
* The sFTP support is now toggled by setting `DROPBEAR_SFTPSERVER', and the
path of the sFTP server program is set independently through the usual
SFTPSERVER_PATH.
author | Michael Witten <mfwitten@gmail.com> |
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date | Thu, 20 Jul 2017 19:38:26 +0000 |
parents | 3017bc7d6238 |
children | 4b1a807a3188 |
rev | line source |
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1 #include "dbhelpers.h" |
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2 #include "includes.h" |
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3 |
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4 /* Erase data */ |
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5 void m_burn(void *data, unsigned int len) { |
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6 |
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7 #if defined(HAVE_MEMSET_S) |
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8 memset_s(data, len, 0x0, len); |
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9 #elif defined(HAVE_EXPLICIT_BZERO) |
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10 explicit_bzero(data, len); |
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11 #else |
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12 /* Based on the method in David Wheeler's |
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13 * "Secure Programming for Linux and Unix HOWTO". May not be safe |
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14 * against link-time optimisation. */ |
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15 volatile char *p = data; |
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16 |
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17 if (data == NULL) |
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18 return; |
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19 while (len--) { |
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20 *p++ = 0x0; |
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21 } |
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22 #endif |
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23 } |
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24 |
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25 |