From 0e5b2871ca6456b01d4bf037a6e68badf1ff1a41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henryk=20Pl=C3=B6tz?= <henryk@ploetzli.ch>
Date: Fri, 3 Oct 2014 19:58:52 +0200
Subject: Initial commit of djbdns-1.05.tar.gz Source was
 http://cr.yp.to/djbdns/djbdns-1.05.tar.gz, SHA1
 2efdb3a039d0c548f40936aa9cb30829e0ce8c3d

---
 dnscache-conf.c | 169 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 169 insertions(+)
 create mode 100644 dnscache-conf.c

(limited to 'dnscache-conf.c')

diff --git a/dnscache-conf.c b/dnscache-conf.c
new file mode 100644
index 0000000..e8c12be
--- /dev/null
+++ b/dnscache-conf.c
@@ -0,0 +1,169 @@
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "hasdevtcp.h"
+#ifdef HASDEVTCP
+#include <sys/mkdev.h>
+#endif
+#include <pwd.h>
+#include "strerr.h"
+#include "buffer.h"
+#include "uint32.h"
+#include "taia.h"
+#include "str.h"
+#include "open.h"
+#include "error.h"
+#include "exit.h"
+#include "auto_home.h"
+#include "generic-conf.h"
+
+#define FATAL "dnscache-conf: fatal: "
+
+void usage(void)
+{
+  strerr_die1x(100,"dnscache-conf: usage: dnscache-conf acct logacct /dnscache [ myip ]");
+}
+
+int fdrootservers;
+char rootserversbuf[64];
+buffer ssrootservers;
+
+char *dir;
+char *user;
+char *loguser;
+struct passwd *pw;
+const char *myip;
+
+uint32 seed[32];
+int seedpos = 0;
+
+void seed_adduint32(uint32 u)
+{
+  int i;
+
+  seed[seedpos] += u;
+  if (++seedpos == 32) {
+    for (i = 0;i < 32;++i) {
+      u = ((u ^ seed[i]) + 0x9e3779b9) ^ (u << 7) ^ (u >> 25);
+      seed[i] = u;
+    }
+    seedpos = 0;
+  }
+}
+
+void seed_addtime(void)
+{
+  struct taia t;
+  char tpack[TAIA_PACK];
+  int i;
+
+  taia_now(&t);
+  taia_pack(tpack,&t);
+  for (i = 0;i < TAIA_PACK;++i)
+    seed_adduint32(tpack[i]);
+}
+
+int main(int argc,char **argv)
+{
+  seed_addtime();
+  seed_adduint32(getpid());
+  seed_adduint32(getppid());
+  seed_adduint32(getuid());
+  seed_adduint32(getgid());
+
+  user = argv[1];
+  if (!user) usage();
+  loguser = argv[2];
+  if (!loguser) usage();
+  dir = argv[3];
+  if (!dir) usage();
+  if (dir[0] != '/') usage();
+  myip = argv[4];
+  if (!myip) myip = "127.0.0.1";
+
+  pw = getpwnam(loguser);
+  seed_addtime();
+  if (!pw)
+    strerr_die3x(111,FATAL,"unknown account ",loguser);
+
+  if (chdir(auto_home) == -1)
+    strerr_die4sys(111,FATAL,"unable to switch to ",auto_home,": ");
+
+  fdrootservers = open_read("/etc/dnsroots.local");
+  if (fdrootservers == -1) {
+    if (errno != error_noent)
+      strerr_die2sys(111,FATAL,"unable to open /etc/dnsroots.local: ");
+    fdrootservers = open_read("/etc/dnsroots.global");
+    if (fdrootservers == -1)
+      strerr_die2sys(111,FATAL,"unable to open /etc/dnsroots.global: ");
+  }
+
+  init(dir,FATAL);
+
+  seed_addtime(); makedir("log");
+  seed_addtime(); perm(02755);
+  seed_addtime(); makedir("log/main");
+  seed_addtime(); owner(pw->pw_uid,pw->pw_gid);
+  seed_addtime(); perm(02755);
+  seed_addtime(); start("log/status"); finish();
+  seed_addtime(); owner(pw->pw_uid,pw->pw_gid);
+  seed_addtime(); perm(0644);
+  seed_addtime(); makedir("env");
+  seed_addtime(); perm(02755);
+  seed_addtime(); start("env/ROOT"); outs(dir); outs("/root\n"); finish();
+  seed_addtime(); perm(0644);
+  seed_addtime(); start("env/IP"); outs(myip); outs("\n"); finish();
+  seed_addtime(); perm(0644);
+  seed_addtime(); start("env/IPSEND"); outs("0.0.0.0\n"); finish();
+  seed_addtime(); perm(0644);
+  seed_addtime(); start("env/CACHESIZE"); outs("1000000\n"); finish();
+  seed_addtime(); perm(0644);
+  seed_addtime(); start("env/DATALIMIT"); outs("3000000\n"); finish();
+  seed_addtime(); perm(0644);
+  seed_addtime(); start("run");
+  outs("#!/bin/sh\nexec 2>&1\nexec <seed\nexec envdir ./env sh -c '\n  exec envuidgid "); outs(user);
+  outs(" softlimit -o250 -d \"$DATALIMIT\" ");
+  outs(auto_home); outs("/bin/dnscache\n'\n"); finish();
+  seed_addtime(); perm(0755);
+  seed_addtime(); start("log/run");
+  outs("#!/bin/sh\nexec setuidgid "); outs(loguser);
+  outs(" multilog t ./main\n"); finish();
+  seed_addtime(); perm(0755);
+  seed_addtime(); makedir("root");
+  seed_addtime(); perm(02755);
+  seed_addtime(); makedir("root/ip");
+  seed_addtime(); perm(02755);
+  seed_addtime(); start("root/ip/127.0.0.1"); finish();
+  seed_addtime(); perm(0600);
+  seed_addtime(); makedir("root/servers");
+  seed_addtime(); perm(02755);
+  seed_addtime(); start("root/servers/@");
+  buffer_init(&ssrootservers,buffer_unixread,fdrootservers,rootserversbuf,sizeof rootserversbuf);
+  copyfrom(&ssrootservers);
+  finish();
+  seed_addtime(); perm(0644);
+  seed_addtime();
+
+  start("seed"); out((char *) seed,128); finish();
+  perm(0600);
+
+#ifdef HASDEVTCP
+  makedir("root/etc");
+  perm(02755);
+  makedir("root/dev");
+  perm(02755);
+  start("root/etc/netconfig");
+  outs("tcp tpi_cots_ord v inet tcp /dev/tcp -\n");
+  outs("udp tpi_clts v inet udp /dev/udp -\n");
+  finish();
+  perm(0645);
+  umask(000);
+  if (mknod("root/dev/tcp",S_IFCHR | 0667,makedev(11,42)) == -1)
+    strerr_die4sys(111,FATAL,"unable to create device ",dir,"/root/dev/tcp: ");
+  if (mknod("root/dev/udp",S_IFCHR | 0667,makedev(11,41)) == -1)
+    strerr_die4sys(111,FATAL,"unable to create device ",dir,"/root/dev/udp: ");
+  umask(022);
+#endif
+
+  _exit(0);
+}
-- 
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