From ae5c1ebe7de85083d75893d9f0aac439f8d036d8 Mon Sep 17 00:00:00 2001
From: rswindell <>
Date: Sat, 9 Nov 2002 11:30:38 +0000
Subject: [PATCH] Don't call FD_ISSET on an invalid socket descriptor.
---
src/sbbs3/mailsrvr.c | 3 ++-
src/sbbs3/main.cpp | 6 ++++--
src/sbbs3/websrvr.c | 3 ++-
3 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/src/sbbs3/mailsrvr.c b/src/sbbs3/mailsrvr.c
index a1c395bd53..d38a6c53a3 100644
--- a/src/sbbs3/mailsrvr.c
+++ b/src/sbbs3/mailsrvr.c
@@ -3166,7 +3166,8 @@ void DLLCALL mail_server(void* arg)
}
- if(FD_ISSET(server_socket,&socket_set)) {
+ if(server_socket!=INVALID_SOCKET
+ && FD_ISSET(server_socket,&socket_set)) {
client_addr_len = sizeof(client_addr);
client_socket = accept(server_socket, (struct sockaddr *)&client_addr
diff --git a/src/sbbs3/main.cpp b/src/sbbs3/main.cpp
index 4f163d9679..a0d543c113 100644
--- a/src/sbbs3/main.cpp
+++ b/src/sbbs3/main.cpp
@@ -3765,10 +3765,12 @@ void DLLCALL bbs_thread(void* arg)
bool rlogin = false;
- if(FD_ISSET(telnet_socket,&socket_set))
+ if(telnet_socket!=INVALID_SOCKET
+ && FD_ISSET(telnet_socket,&socket_set))
client_socket = accept_socket(telnet_socket, (struct sockaddr *)&client_addr
,&client_addr_len);
- else if(rlogin_socket!=INVALID_SOCKET && FD_ISSET(rlogin_socket,&socket_set)) {
+ else if(rlogin_socket!=INVALID_SOCKET
+ && FD_ISSET(rlogin_socket,&socket_set)) {
client_socket = accept_socket(rlogin_socket, (struct sockaddr *)&client_addr
,&client_addr_len);
rlogin = true;
diff --git a/src/sbbs3/websrvr.c b/src/sbbs3/websrvr.c
index 673000ab6b..b0bd719de2 100644
--- a/src/sbbs3/websrvr.c
+++ b/src/sbbs3/websrvr.c
@@ -2346,7 +2346,8 @@ void DLLCALL web_server(void* arg)
client_addr_len = sizeof(client_addr);
- if(FD_ISSET(server_socket,&socket_set))
+ if(server_socket!=INVALID_SOCKET
+ && FD_ISSET(server_socket,&socket_set))
client_socket = accept(server_socket, (struct sockaddr *)&client_addr
,&client_addr_len);
else {
--
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