From e9b76e1f1e37f91ec9b30274594b7953f1afa6a2 Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Thu, 22 May 2008 17:41:01 +0000 Subject: dnsd: fixes various segfaults. One was a lib api change that was not updated and another is a stack buffer overflow. It also adds support for '*' in dnsd.conf. It resolves all hostnames to a specific ip address. This is useful if you for example want redirect all http traffic to your first-boot-web-wizard on you router/firewall. By Timo Teras --- networking/dnsd.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'networking/dnsd.c') diff --git a/networking/dnsd.c b/networking/dnsd.c index cb62d2081..97ba2dc6a 100644 --- a/networking/dnsd.c +++ b/networking/dnsd.c @@ -194,7 +194,8 @@ static int table_lookup(uint16_t type, uint8_t * as, uint8_t * qs) for (i = 1; i <= (int)(d->name[0]); i++) if (tolower(qs[i]) != d->name[i]) break; - if (i > (int)(d->name[0])) { + if (i > (int)(d->name[0]) || + (d->name[0] == 1 && d->name[1] == '*')) { strcpy((char *)as, d->ip); #if DEBUG fprintf(stderr, " OK as:%s\n", as); @@ -202,7 +203,8 @@ static int table_lookup(uint16_t type, uint8_t * as, uint8_t * qs) return 0; } } else if (type == REQ_PTR) { /* search by IP-address */ - if (!strncmp((char*)&d->rip[1], (char*)&qs[1], strlen(d->rip)-1)) { + if ((d->name[0] != 1 || d->name[1] != '*') && + !strncmp((char*)&d->rip[1], (char*)&qs[1], strlen(d->rip)-1)) { strcpy((char *)as, d->name); return 0; } @@ -401,7 +403,7 @@ int dnsd_main(int argc ATTRIBUTE_UNUSED, char **argv) r = process_packet(buf); if (r <= 0) continue; - send_to_from(udps, buf, r, 0, &to->u.sa, &from->u.sa, lsa->len); + send_to_from(udps, buf, r, 0, &from->u.sa, &to->u.sa, lsa->len); } return 0; } -- cgit v1.2.3