From d77d56ab050f7763f06461787cc862b6ec0095c4 Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Fri, 20 Jul 2012 11:05:02 -0700
Subject: add some exit-code processing;  require TCPREMOTEHOST

---
 tools/greylist.c | 39 ++++++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 13 deletions(-)

(limited to 'tools/greylist.c')

diff --git a/tools/greylist.c b/tools/greylist.c
index 1745b32..1320257 100644
--- a/tools/greylist.c
+++ b/tools/greylist.c
@@ -26,10 +26,17 @@ const int day(24*hour);
 const int minimum_age(15*minute);
 const int maximum_age(32*day);
 const int probation(4*hour);
-const int sa_good = 0;
-const int bug_bait_grey = 1;
-// qmail_queue and spamc have similar interpretations here:
-const int sa_syserr = 71;
+
+//  error exit codes, mostly as stated in qmail.c
+#define foo(name, num) const int ex_ ## name = num
+#define bar foo(good, 0) ;\
+foo(spam, 21) ;\
+foo(greylisting, 70) ;\
+foo(syserr, 71) ;\
+foo(comerr, 74) ;
+
+bar
+#undef foo
 
 pid_t mypid;
 string progname;
@@ -53,7 +60,7 @@ int prefix(const string shorter, const string longer){
 }
 
 void exeunt(const int sts){
-  if (sts == sa_good) exit(sts);
+  if (sts == ex_good) exit(sts);
 
   const char* foo = getenv("HI_Q_GROUP");
   if (!foo) exit(sts);
@@ -188,7 +195,7 @@ int main(int _argc, char** _argv){
       copies++;
     } else {
       cerr << "Unrecognized arg: " << arg << endl;
-      exeunt(sa_syserr);
+      exeunt(ex_syserr);
     }
   }
   if (scanmode) {
@@ -203,11 +210,17 @@ int whatsit::doit(){
   char* ipvar = getenv("TCPREMOTEIP");
   if (!ipvar) {
     cerr << progname << ": TCPREMOTEIP not set???" << endl;
-    exeunt(sa_syserr);
+    exeunt(ex_syserr);
   }
   ipbase = ipvar;
   char* hostvar = getenv("TCPREMOTEHOST");
-  if (hostvar) hostname = hostvar;
+  if (!hostvar) {
+    cerr << progname 
+     << ": from " << ipbase
+     << " ... TCPREMOTEHOST not set???" << endl;
+    exeunt(ex_spam);
+  }
+  hostname = hostvar;
 
 // see if our directory exists:
   struct stat dirstat;
@@ -225,7 +238,7 @@ int whatsit::doit(){
         << ": mkdir failed for '"
         << dirname << "' : ";
       perror(0);
-      exeunt(sa_syserr);
+      exeunt(ex_syserr);
     }
   }
 
@@ -247,7 +260,7 @@ int whatsit::doit(){
     }
     close(fd);
     update("new customer", now, now);
-    exeunt(bug_bait_grey);
+    exeunt(ex_greylisting);
   }
 // here if stat succeeded
   mod_age = now.tv_sec - ipstat.st_mtime;
@@ -255,16 +268,16 @@ int whatsit::doit(){
   timeval mod_orig = {ipstat.st_mtime, 0};
   if (mod_age < minimum_age) {
     update("early bird", mod_orig, now);
-    exeunt(bug_bait_grey);
+    exeunt(ex_greylisting);
   }
   if (mod_age - ac_age < minimum_age    // early bird, or completely unused
     && mod_age > probation) {           // did not diligently resubmit
     update("disprobation", now, now);
-    exeunt(bug_bait_grey);
+    exeunt(ex_greylisting);
   }
   if (ac_age > maximum_age) {
     update("too old, starting over", now, now);
-    exeunt(bug_bait_grey);
+    exeunt(ex_greylisting);
   }
 // if all checks are passed, must be OK:
   update("returning customer", mod_orig, now);
-- 
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