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reply with alert to any connection attempt when in maint mode

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This commit is contained in:
Eric House 2013-01-20 10:03:20 -08:00
parent f06d129c24
commit 9023440a88
2 changed files with 13 additions and 11 deletions
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19
xwords4/relay/xwrelay.cpp
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@ -1421,6 +1421,10 @@ maint_str_loop( int udpsock, const char* str )
{
assert( -1 != udpsock );
int len = 1 + strlen(str);
unsigned char outbuf[len + 2];
outbuf[0] = XWPDEV_PROTO_VERSION;
outbuf[1] = XWPDEV_ALERT;
memcpy( &outbuf[2], str, len );
fd_set rfds;
for ( ; ; ) {
@ -1441,18 +1445,11 @@ maint_str_loop( int udpsock, const char* str )
ssize_t nRead = recvfrom( udpsock, buf, sizeof(buf), 0 /*flags*/,
&saddr.addr, &fromlen );
if ( 2 <= nRead ) {
if ( buf[0] == XWPDEV_PROTO_VERSION && buf[1] == XWPDEV_REG ) {
// reply, reusing buffer
buf[1] = XWPDEV_MSGRSP;
memcpy( &buf[2], str, len );
send_via_udp( udpsock, &saddr.addr, buf, 2 + len );
}
if ( 2 <= nRead && buf[0] == XWPDEV_PROTO_VERSION ) {
send_via_udp( udpsock, &saddr.addr, outbuf, sizeof(outbuf) );
}
}
}
} // for
}
int
@ -1662,7 +1659,7 @@ main( int argc, char** argv )
if ( !!maint_str ) {
maint_str_loop( g_udpsock, maint_str );
exit( 0 );
exit( 1 ); // should never exit
}
/* Needs to be reset after a crash/respawn */

5
xwords4/relay/xwrelay.h
View file

@ -33,6 +33,11 @@
typedef
#endif
enum { XWPDEV_NONE /* 0 is an illegal value */
,XWPDEV_ALERT /* relay->device: provides a string message to
present to the user (with device allowed not
to present the same string more than once)
format: proto: 1, this enum: 1,
null-terminnated string: varies */
,XWPDEV_REG /* dev->relay: device registers self and
self-selected (e.g. gcm) or assigned devid
format: proto: 1; this enum: 1; idType: 1,