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Code Activity

agent: Sanitize permissions of the private key directory.

Browse source 
* agent/gpg-agent.c (create_private_keys_directory): Set permissions.
* common/sysutils.c (modestr_to_mode): New function.
(gnupg_mkdir): Use new function.
(gnupg_chmod): New function.
* common/sysutils.h (gnupg_chmod): New prototype.
* tests/migrations/from-classic.test: Test migration with existing
directory.

GnuPG-bug-id: 2312
Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2016-04-20 14:55:45 +02:00
parent defbc70b4a
commit f8adf1a323
4 changed files with 69 additions and 24 deletions
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73
common/sysutils.c
View file

@ -554,6 +554,40 @@ gnupg_remove (const char *fname)
}
#ifndef HAVE_W32_SYSTEM
static mode_t
modestr_to_mode (const char *modestr)
{
mode_t mode = 0;
if (modestr && *modestr)
{
modestr++;
if (*modestr && *modestr++ == 'r')
mode |= S_IRUSR;
if (*modestr && *modestr++ == 'w')
mode |= S_IWUSR;
if (*modestr && *modestr++ == 'x')
mode |= S_IXUSR;
if (*modestr && *modestr++ == 'r')
mode |= S_IRGRP;
if (*modestr && *modestr++ == 'w')
mode |= S_IWGRP;
if (*modestr && *modestr++ == 'x')
mode |= S_IXGRP;
if (*modestr && *modestr++ == 'r')
mode |= S_IROTH;
if (*modestr && *modestr++ == 'w')
mode |= S_IWOTH;
if (*modestr && *modestr++ == 'x')
mode |= S_IXOTH;
}
return mode;
}
#endif
/* A wrapper around mkdir which takes a string for the mode argument.
This makes it easier to handle the mode argument which is not
defined on all systems. The format of the modestring is
@ -589,31 +623,22 @@ gnupg_mkdir (const char *name, const char *modestr)
because this sets ERRNO. */
return mkdir (name);
#else
mode_t mode = 0;
return mkdir (name, modestr_to_mode (modestr));
#endif
}
if (modestr && *modestr)
{
modestr++;
if (*modestr && *modestr++ == 'r')
mode |= S_IRUSR;
if (*modestr && *modestr++ == 'w')
mode |= S_IWUSR;
if (*modestr && *modestr++ == 'x')
mode |= S_IXUSR;
if (*modestr && *modestr++ == 'r')
mode |= S_IRGRP;
if (*modestr && *modestr++ == 'w')
mode |= S_IWGRP;
if (*modestr && *modestr++ == 'x')
mode |= S_IXGRP;
if (*modestr && *modestr++ == 'r')
mode |= S_IROTH;
if (*modestr && *modestr++ == 'w')
mode |= S_IWOTH;
if (*modestr && *modestr++ == 'x')
mode |= S_IXOTH;
}
return mkdir (name, mode);
/* A wrapper around mkdir which takes a string for the mode argument.
This makes it easier to handle the mode argument which is not
defined on all systems. The format of the modestring is the same
as for gnupg_mkdir. */
int
gnupg_chmod (const char *name, const char *modestr)
{
#ifdef HAVE_W32_SYSTEM
return 0;
#else
return chmod (name, modestr_to_mode (modestr));
#endif
}