netifd: update to latest version, fixes tcp connection loss issues on dhcp rekey

[openwrt.git] / package / uhttpd / src / uhttpd-cgi.c

diff --git a/package/uhttpd/src/uhttpd-cgi.c b/package/uhttpd/src/uhttpd-cgi.c
index 8c17251..16bfda7 100644 (file)
--- a/package/uhttpd/src/uhttpd-cgi.c
+++ b/package/uhttpd/src/uhttpd-cgi.c
@@ -1,7 +1,7 @@
 /*
  * uhttpd - Tiny single-threaded httpd - CGI handler
  *
- *   Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
+ *   Copyright (C) 2010-2011 Jo-Philipp Wich <xm@subsignal.org>
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -42,7 +42,7 @@ static struct http_response * uh_cgi_header_parse(char *buf, int len, int *off)
 
                bufptr = &buf[0];
 
-               for( pos = 0; pos < len; pos++ )
+               for( pos = 0; pos < *off; pos++ )
                {
                        if( !hdrname && (buf[pos] == ':') )
                        {
@@ -60,11 +60,11 @@ static struct http_response * uh_cgi_header_parse(char *buf, int len, int *off)
 
                        else if( (buf[pos] == '\r') || (buf[pos] == '\n') )
                        {
-                               buf[pos++] = 0;
-
                                if( ! hdrname )
                                        break;
 
+                               buf[pos++] = 0;
+
                                if( (pos < len) && (buf[pos] == '\n') )
                                        pos++;
 
@@ -157,6 +157,8 @@ void uh_cgi_request(
        fd_set reader;
        fd_set writer;
 
+       sigset_t ss;
+
        struct sigaction sa;
        struct timeval timeout;
        struct http_response *res;
@@ -187,6 +189,10 @@ void uh_cgi_request(
 
                /* exec child */
                case 0:
+                       /* unblock signals */
+                       sigemptyset(&ss);
+                       sigprocmask(SIG_SETMASK, &ss, NULL);
+
                        /* restore SIGTERM */
                        sa.sa_flags = 0;
                        sa.sa_handler = SIG_DFL;
@@ -201,6 +207,10 @@ void uh_cgi_request(
                        dup2(rfd[1], 1);
                        dup2(wfd[0], 0);
 
+                       /* avoid leaking our pipe into child-child processes */
+                       fd_cloexec(rfd[1]);
+                       fd_cloexec(wfd[0]);
+
                        /* check for regular, world-executable file _or_ interpreter */
                        if( ((pi->stat.st_mode & S_IFREG) &&
                             (pi->stat.st_mode & S_IXOTH)) || (ip != NULL)