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#include <sys/types.h>
#include <sys/stat.h>
#include "readwrite.h"
#include "sig.h"
#include "exit.h"
#include "open.h"
#include "seek.h"
#include "fmt.h"
#include "alloc.h"
#include "substdio.h"
#include "datetime.h"
#include "now.h"
#include "triggerpull.h"
#include "extra.h"
#include "auto_qmail.h"
#include "auto_uids.h"
#include "date822fmt.h"
#include "fmtqfn.h"
#define DEATH 86400 /* 24 hours; _must_ be below q-s's OSSIFIED (36 hours) */
#define ADDR 1003
char inbuf[2048];
struct substdio ssin;
char outbuf[256];
struct substdio ssout;
datetime_sec starttime;
struct datetime dt;
unsigned long mypid;
unsigned long uid;
char *pidfn;
struct stat pidst;
unsigned long messnum;
char *messfn;
char *todofn;
char *intdfn;
int messfd;
int intdfd;
int flagmademess = 0;
int flagmadeintd = 0;
void cleanup()
{
if (flagmadeintd)
{
seek_trunc(intdfd,0);
if (unlink(intdfn) == -1) return;
}
if (flagmademess)
{
seek_trunc(messfd,0);
if (unlink(messfn) == -1) return;
}
}
void die(e) int e; { _exit(e); }
void die_write() { cleanup(); die(53); }
void die_read() { cleanup(); die(54); }
void sigalrm() { /* thou shalt not clean up here */ die(52); }
void sigbug() { die(81); }
unsigned int receivedlen;
char *received;
/* "Received: (qmail-queue invoked by alias); 26 Sep 1995 04:46:54 -0000\n" */
static unsigned int receivedfmt(s)
char *s;
{
unsigned int i;
unsigned int len;
len = 0;
i = fmt_str(s,"Received: (qmail "); len += i; if (s) s += i;
i = fmt_ulong(s,mypid); len += i; if (s) s += i;
i = fmt_str(s," invoked "); len += i; if (s) s += i;
if (uid == auto_uida)
{ i = fmt_str(s,"by alias"); len += i; if (s) s += i; }
else if (uid == auto_uidd)
{ i = fmt_str(s,"from network"); len += i; if (s) s += i; }
else if (uid == auto_uids)
{ i = fmt_str(s,"for bounce"); len += i; if (s) s += i; }
else
{
i = fmt_str(s,"by uid "); len += i; if (s) s += i;
i = fmt_ulong(s,uid); len += i; if (s) s += i;
}
i = fmt_str(s,"); "); len += i; if (s) s += i;
i = date822fmt(s,&dt); len += i; if (s) s += i;
return len;
}
void received_setup()
{
receivedlen = receivedfmt((char *) 0);
received = alloc(receivedlen + 1);
if (!received) die(51);
receivedfmt(received);
}
unsigned int pidfmt(s,seq)
char *s;
unsigned long seq;
{
unsigned int i;
unsigned int len;
len = 0;
i = fmt_str(s,"pid/"); len += i; if (s) s += i;
i = fmt_ulong(s,mypid); len += i; if (s) s += i;
i = fmt_str(s,"."); len += i; if (s) s += i;
i = fmt_ulong(s,starttime); len += i; if (s) s += i;
i = fmt_str(s,"."); len += i; if (s) s += i;
i = fmt_ulong(s,seq); len += i; if (s) s += i;
++len; if (s) *s++ = 0;
return len;
}
char *fnnum(dirslash,flagsplit)
char *dirslash;
int flagsplit;
{
char *s;
s = alloc(fmtqfn((char *) 0,dirslash,messnum,flagsplit));
if (!s) die(51);
fmtqfn(s,dirslash,messnum,flagsplit);
return s;
}
void pidopen()
{
unsigned int len;
unsigned long seq;
seq = 1;
len = pidfmt((char *) 0,seq);
pidfn = alloc(len);
if (!pidfn) die(51);
for (seq = 1;seq < 10;++seq)
{
if (pidfmt((char *) 0,seq) > len) die(81); /* paranoia */
pidfmt(pidfn,seq);
messfd = open_excl(pidfn);
if (messfd != -1) return;
}
die(63);
}
char tmp[FMT_ULONG];
void main()
{
unsigned int len;
char ch;
sig_blocknone();
umask(033);
if (chdir(auto_qmail) == -1) die(61);
if (chdir("queue") == -1) die(62);
mypid = getpid();
uid = getuid();
starttime = now();
datetime_tai(&dt,starttime);
received_setup();
sig_pipeignore();
sig_miscignore();
sig_alarmcatch(sigalrm);
sig_bugcatch(sigbug);
alarm(DEATH);
pidopen();
if (fstat(messfd,&pidst) == -1) die(63);
messnum = pidst.st_ino;
messfn = fnnum("mess/",1);
todofn = fnnum("todo/",0);
intdfn = fnnum("intd/",0);
if (link(pidfn,messfn) == -1) die(64);
if (unlink(pidfn) == -1) die(63);
flagmademess = 1;
substdio_fdbuf(&ssout,write,messfd,outbuf,sizeof(outbuf));
substdio_fdbuf(&ssin,read,0,inbuf,sizeof(inbuf));
if (substdio_bput(&ssout,received,receivedlen) == -1) die_write();
switch(substdio_copy(&ssout,&ssin))
{
case -2: die_read();
case -3: die_write();
}
if (substdio_flush(&ssout) == -1) die_write();
if (fsync(messfd) == -1) die_write();
intdfd = open_excl(intdfn);
if (intdfd == -1) die(65);
flagmadeintd = 1;
substdio_fdbuf(&ssout,write,intdfd,outbuf,sizeof(outbuf));
substdio_fdbuf(&ssin,read,1,inbuf,sizeof(inbuf));
if (substdio_bput(&ssout,"u",1) == -1) die_write();
if (substdio_bput(&ssout,tmp,fmt_ulong(tmp,uid)) == -1) die_write();
if (substdio_bput(&ssout,"",1) == -1) die_write();
if (substdio_bput(&ssout,"p",1) == -1) die_write();
if (substdio_bput(&ssout,tmp,fmt_ulong(tmp,mypid)) == -1) die_write();
if (substdio_bput(&ssout,"",1) == -1) die_write();
if (substdio_get(&ssin,&ch,1) < 1) die_read();
if (ch != 'F') die(91);
if (substdio_bput(&ssout,&ch,1) == -1) die_write();
for (len = 0;len < ADDR;++len)
{
if (substdio_get(&ssin,&ch,1) < 1) die_read();
if (substdio_put(&ssout,&ch,1) == -1) die_write();
if (!ch) break;
}
if (len >= ADDR) die(11);
if (substdio_bput(&ssout,QUEUE_EXTRA,QUEUE_EXTRALEN) == -1) die_write();
for (;;)
{
if (substdio_get(&ssin,&ch,1) < 1) die_read();
if (!ch) break;
if (ch != 'T') die(91);
if (substdio_bput(&ssout,&ch,1) == -1) die_write();
for (len = 0;len < ADDR;++len)
{
if (substdio_get(&ssin,&ch,1) < 1) die_read();
if (substdio_bput(&ssout,&ch,1) == -1) die_write();
if (!ch) break;
}
if (len >= ADDR) die(11);
}
if (substdio_flush(&ssout) == -1) die_write();
if (fsync(intdfd) == -1) die_write();
if (link(intdfn,todofn) == -1) die(66);
triggerpull();
die(0);
}
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