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inetd.c: Improve error detection in inet port conversion.

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson committed 2015-07-10 19:10:28 +02:00
1 parent 0fd9aa6497
commit d6490df9a3
1 file changed
+3 -2
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inetd.c
+3 -2
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@@ -219,15 +219,16 @@ static int getent(char *service, char *proto, struct servent **sv, struct protoe
{ {
*sv = getservbyname(service, proto); *sv = getservbyname(service, proto);
if (!*sv) { if (!*sv) {
const char *errstr;
static struct servent s; static struct servent s;
s.s_name = service; s.s_name = service;
s.s_port = atonum(service); s.s_port = strtonum(service, 1, UINT16_MAX, &errstr);
s.s_proto = NULL; s.s_proto = NULL;
if (!strcmp("tcp", proto) || !strcmp("udp", proto)) if (!strcmp("tcp", proto) || !strcmp("udp", proto))
s.s_proto = proto; s.s_proto = proto;
if (s.s_port == -1 || !s.s_proto) { if (errstr || !s.s_proto) {
_e("Invalid/unknown inetd service, cannot create custom entry."); _e("Invalid/unknown inetd service, cannot create custom entry.");
return errno = EINVAL; return errno = EINVAL;
} }