From a70e39cd5e7c6fa084e548240d362b5b1ae813a8 Mon Sep 17 00:00:00 2001 From: "\"Steven J. Hill\"" Date: Mon, 7 May 2007 04:07:06 +0000 Subject: [PATCH] This patch increases the maximum host name length for 'dnsd' to 40 characters in length and fixes a resolving bug. For example, if there are two entries in the 'dnsd.conf' file of 'foo1' and 'foo2'. Doing a 'nslookup foo2' the 'dnsd' will always return the IP address of 'foo1' because the string comparison is faulty. --- .../busybox-1.2.2.1-max_host_len_40.patch | 61 +++++++++++++++++++ .../busybox-1.4.0-max_host_len_40.patch | 61 +++++++++++++++++++ .../busybox-1.5.0-max_host_len_40.patch | 37 +++++++++++ 3 files changed, 159 insertions(+) create mode 100644 package/busybox/busybox-1.2.2.1-max_host_len_40.patch create mode 100644 package/busybox/busybox-1.4.0-max_host_len_40.patch create mode 100644 package/busybox/busybox-1.5.0-max_host_len_40.patch diff --git a/package/busybox/busybox-1.2.2.1-max_host_len_40.patch b/package/busybox/busybox-1.2.2.1-max_host_len_40.patch new file mode 100644 index 0000000000..3c3290054b --- /dev/null +++ b/package/busybox/busybox-1.2.2.1-max_host_len_40.patch @@ -0,0 +1,61 @@ +diff -ur busybox-1.2.2.1/networking/dnsd.c busybox-1.2.2.1-patched/networking/dnsd.c +--- busybox-1.2.2.1/networking/dnsd.c 2006-10-24 15:21:17.000000000 -0500 ++++ busybox-1.2.2.1-patched/networking/dnsd.c 2007-04-12 12:49:53.000000000 -0500 +@@ -31,11 +31,11 @@ + + #define is_daemon() (flags&16) + #define is_verbose() (flags&32) +-//#define DEBUG ++#undef DEBUG + + + enum { +- MAX_HOST_LEN = 16, // longest host name allowed is 15 ++ MAX_HOST_LEN = 41, // longest host name allowed is 40 + IP_STRING_LEN = 18, // .xxx.xxx.xxx.xxx\0 + + //must be strlen('.in-addr.arpa') larger than IP_STRING_LEN +@@ -229,19 +229,23 @@ + { + int i; + struct dns_entry *d = dnsentry; ++ char *p,*q; ++ ++ q = (char *)&(qs[1]); ++ p = &(d->name[1]); + + if(d) do { + #ifdef DEBUG + if(qs && d) { +- char *p,*q; +- q = (char *)&(qs[1]); +- p = &(d->name[1]); + fprintf(stderr, "\n%s: %d/%d p:%s q:%s %d", + __FUNCTION__, strlen(p), (int)(d->name[0]), + p, q, strlen(q)); + } + #endif + if (type == REQ_A) { /* search by host name */ ++ p = &(d->name[1]); ++ if(strlen(q) != strlen(p)) ++ continue; + for(i = 1; i <= (int)(d->name[0]); i++) + if(tolower(qs[i]) != d->name[i]) + break; +@@ -398,13 +402,15 @@ + fprintf(stderr,"fileconf: %s\n", fileconf); + } + +- if(is_daemon()) ++ if(is_daemon()) { + #ifdef BB_NOMMU + /* reexec for vfork() do continue parent */ + vfork_daemon_rexec(1, 0, argc, argv, "-d"); + #else + bb_xdaemon(1, 0); + #endif ++ daemonmode = 1; ++ } + + dnsentryinit(is_verbose()); + diff --git a/package/busybox/busybox-1.4.0-max_host_len_40.patch b/package/busybox/busybox-1.4.0-max_host_len_40.patch new file mode 100644 index 0000000000..3c3290054b --- /dev/null +++ b/package/busybox/busybox-1.4.0-max_host_len_40.patch @@ -0,0 +1,61 @@ +diff -ur busybox-1.2.2.1/networking/dnsd.c busybox-1.2.2.1-patched/networking/dnsd.c +--- busybox-1.2.2.1/networking/dnsd.c 2006-10-24 15:21:17.000000000 -0500 ++++ busybox-1.2.2.1-patched/networking/dnsd.c 2007-04-12 12:49:53.000000000 -0500 +@@ -31,11 +31,11 @@ + + #define is_daemon() (flags&16) + #define is_verbose() (flags&32) +-//#define DEBUG ++#undef DEBUG + + + enum { +- MAX_HOST_LEN = 16, // longest host name allowed is 15 ++ MAX_HOST_LEN = 41, // longest host name allowed is 40 + IP_STRING_LEN = 18, // .xxx.xxx.xxx.xxx\0 + + //must be strlen('.in-addr.arpa') larger than IP_STRING_LEN +@@ -229,19 +229,23 @@ + { + int i; + struct dns_entry *d = dnsentry; ++ char *p,*q; ++ ++ q = (char *)&(qs[1]); ++ p = &(d->name[1]); + + if(d) do { + #ifdef DEBUG + if(qs && d) { +- char *p,*q; +- q = (char *)&(qs[1]); +- p = &(d->name[1]); + fprintf(stderr, "\n%s: %d/%d p:%s q:%s %d", + __FUNCTION__, strlen(p), (int)(d->name[0]), + p, q, strlen(q)); + } + #endif + if (type == REQ_A) { /* search by host name */ ++ p = &(d->name[1]); ++ if(strlen(q) != strlen(p)) ++ continue; + for(i = 1; i <= (int)(d->name[0]); i++) + if(tolower(qs[i]) != d->name[i]) + break; +@@ -398,13 +402,15 @@ + fprintf(stderr,"fileconf: %s\n", fileconf); + } + +- if(is_daemon()) ++ if(is_daemon()) { + #ifdef BB_NOMMU + /* reexec for vfork() do continue parent */ + vfork_daemon_rexec(1, 0, argc, argv, "-d"); + #else + bb_xdaemon(1, 0); + #endif ++ daemonmode = 1; ++ } + + dnsentryinit(is_verbose()); + diff --git a/package/busybox/busybox-1.5.0-max_host_len_40.patch b/package/busybox/busybox-1.5.0-max_host_len_40.patch new file mode 100644 index 0000000000..7b9ba1f772 --- /dev/null +++ b/package/busybox/busybox-1.5.0-max_host_len_40.patch @@ -0,0 +1,37 @@ +diff -ur busybox-1.5.0/networking/dnsd.c busybox-1.5.0-patched/networking/dnsd.c +--- busybox-1.5.0/networking/dnsd.c 2007-03-22 15:21:23.000000000 -0500 ++++ busybox-1.5.0-patched/networking/dnsd.c 2007-04-13 06:53:49.000000000 -0500 +@@ -30,7 +30,7 @@ + #define DEBUG 0 + + enum { +- MAX_HOST_LEN = 16, // longest host name allowed is 15 ++ MAX_HOST_LEN = 41, // longest host name allowed is 40 + IP_STRING_LEN = 18, // .xxx.xxx.xxx.xxx\0 + + //must be strlen('.in-addr.arpa') larger than IP_STRING_LEN +@@ -186,17 +186,21 @@ + { + int i; + struct dns_entry *d=dnsentry; ++ char *p,*q; ++ ++ q = (char *)&(qs[1]); ++ p = &(d->name[1]); + + do { + #if DEBUG +- char *p,*q; +- q = (char *)&(qs[1]); +- p = &(d->name[1]); + fprintf(stderr, "\n%s: %d/%d p:%s q:%s %d", + __FUNCTION__, (int)strlen(p), (int)(d->name[0]), + p, q, (int)strlen(q)); + #endif + if (type == REQ_A) { /* search by host name */ ++ p = &(d->name[1]); ++ if(strlen(q) != strlen(p)) ++ continue; + for (i = 1; i <= (int)(d->name[0]); i++) + if (tolower(qs[i]) != d->name[i]) + break; -- 2.30.2