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keyring: prevent data corruption from signal

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This commit is contained in:
Mirek Kratochvil 2014-01-25 12:35:41 +01:00
parent fee6b431c2
commit f3ede079e9
1 changed files with 43 additions and 2 deletions
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45
src/keyring.cpp
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@ -391,6 +391,40 @@ static bool file_put_sencode (const std::string&fn, sencode*in)
return true;
}
#ifndef WIN32
#include <signal.h>
static void ignore_term_signals (bool ignore)
{
int signums[] = {
SIGHUP,
SIGINT,
SIGQUIT,
SIGPIPE,
SIGTERM,
SIGUSR1,
SIGUSR2,
0
};
struct sigaction sa;
sa.sa_handler = ignore ? SIG_IGN : SIG_DFL;
sa.sa_flags = 0;
for (int*sig = signums; *sig; ++sig) {
sigaction (*sig, &sa, NULL);
}
}
#else
static void ignore_term_signals (bool ignore)
{
//no kill resistance on windows yet
}
#endif
bool keyring::save()
{
std::string dir, fn;
@ -399,6 +433,8 @@ bool keyring::save()
dir = get_user_dir();
ignore_term_signals (true);
/*
* pubkeys
*/
@ -406,7 +442,7 @@ bool keyring::save()
fn = dir + PUBKEYS_FILENAME;
res = file_put_sencode (fn, S);
sencode_destroy (S);
if (!res) return false;
if (!res) goto failure;
/*
* keypairs
@ -415,9 +451,14 @@ bool keyring::save()
fn = dir + SECRETS_FILENAME;
res = file_put_sencode (fn, S);
sencode_destroy (S);
if (!res) return false;
if (!res) goto failure;
ignore_term_signals (false);
return true;
failure:
ignore_term_signals (false);
return false;
}
bool keyring::open()