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minissdp.c: ignore SSDP packets missing the MX: header in UPNP_STRICT mode

This commit is contained in:
Thomas Bernard 2013-02-07 11:00:15 +01:00
parent 39a1d85f7a
commit 6ca8ee1dcf
2 changed files with 25 additions and 1 deletions
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1
miniupnpd/Changelog.txt
View File

@ -3,6 +3,7 @@ $Id: Changelog.txt,v 1.328 2013/02/06 23:37:27 nanard Exp $
2013/02/07:
Add DATE: header in SSDP packets
Fix SSDP packets sent with uuid as ST: header to conform to UDA
ignore SSDP packets missing the MX: header in UPNP_STRICT mode
VERSION 1.8 : released on 2013/02/06

25
miniupnpd/minissdp.c
View File

@ -566,10 +566,11 @@ ProcessSSDPData(int s, const char *bufr, int n,
char sender_str[64];
char ver_str[4];
const char * announced_host = NULL;
#ifdef ENABLE_IPV6
#ifdef UPNP_STRICT
#ifdef ENABLE_IPV6
char announced_host_buf[64];
#endif
int mx_value = -1;
#endif
/* get the string representation of the sender address */
@ -613,7 +614,29 @@ ProcessSSDPData(int s, const char *bufr, int n,
/*while(bufr[i+j]!='\r') j++;*/
/*syslog(LOG_INFO, "%.*s", j, bufr+i);*/
}
#ifdef UPNP_STRICT
else if((i < n - 3) && (strncasecmp(bufr+i, "mx:", 3) == 0))
{
const char * mx;
int mx_len;
mx = bufr+i+3;
mx_len = 0;
while((*mx == ' ' || *mx == '\t') && (mx < bufr + n))
mx++;
while(mx[mx_len]!='\r' && mx[mx_len]!='\n'
&& (mx + mx_len < bufr + n))
mx_len++;
mx_value = atoi(mx);
syslog(LOG_DEBUG, "MX: %.*s (value=%d)", mx_len, mx, mx_value);
}
#endif
}
#ifdef UPNP_STRICT
if(mx_value < 0) {
syslog(LOG_INFO, "ignoring SSDP packet missing MX: header");
return;
}
#endif
/*syslog(LOG_INFO, "SSDP M-SEARCH packet received from %s",
sender_str );*/
if(st && (st_len > 0))