mdw@git.distorted.org.uk Git - ezmlm/blob - qmail.c

   1 #include "substdio.h"
   2 #include "readwrite.h"
   3 #include "wait.h"
   4 #include "exit.h"
   5 #include "fork.h"
   6 #include "fd.h"
   7 #include "qmail.h"
   8 #include "auto_qmail.h"
   9
  10 static char *binqqargs[2] = { "bin/qmail-queue", 0 } ;
  11
  12 int qmail_open(qq)
  13 struct qmail *qq;
  14 {
  15   int pim[2];
  16   int pie[2];
  17
  18   if (pipe(pim) == -1) return -1;
  19   if (pipe(pie) == -1) { close(pim[0]); close(pim[1]); return -1; }
  20
  21   switch(qq->pid = vfork()) {
  22     case -1:
  23       close(pim[0]); close(pim[1]);
  24       close(pie[0]); close(pie[1]);
  25       return -1;
  26     case 0:
  27       close(pim[1]);
  28       close(pie[1]);
  29       if (fd_move(0,pim[0]) == -1) _exit(120);
  30       if (fd_move(1,pie[0]) == -1) _exit(120);
  31       if (chdir(auto_qmail) == -1) _exit(120);
  32       execv(*binqqargs,binqqargs);
  33       _exit(120);
  34   }
  35
  36   qq->fdm = pim[1]; close(pim[0]);
  37   qq->fde = pie[1]; close(pie[0]);
  38   substdio_fdbuf(&qq->ss,write,qq->fdm,qq->buf,sizeof(qq->buf));
  39   qq->flagerr = 0;
  40   return 0;
  41 }
  42
  43 unsigned long qmail_qp(qq) struct qmail *qq;
  44 {
  45   return qq->pid;
  46 }
  47
  48 void qmail_fail(qq) struct qmail *qq;
  49 {
  50   qq->flagerr = 1;
  51 }
  52
  53 void qmail_put(qq,s,len) struct qmail *qq; char *s; int len;
  54 {
  55   if (!qq->flagerr) if (substdio_put(&qq->ss,s,len) == -1) qq->flagerr = 1;
  56 }
  57
  58 void qmail_puts(qq,s) struct qmail *qq; char *s;
  59 {
  60   if (!qq->flagerr) if (substdio_puts(&qq->ss,s) == -1) qq->flagerr = 1;
  61 }
  62
  63 void qmail_from(qq,s) struct qmail *qq; char *s;
  64 {
  65   if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;
  66   close(qq->fdm);
  67   substdio_fdbuf(&qq->ss,write,qq->fde,qq->buf,sizeof(qq->buf));
  68   qmail_put(qq,"F",1);
  69   qmail_puts(qq,s);
  70   qmail_put(qq,"",1);
  71 }
  72
  73 void qmail_to(qq,s) struct qmail *qq; char *s;
  74 {
  75   qmail_put(qq,"T",1);
  76   qmail_puts(qq,s);
  77   qmail_put(qq,"",1);
  78 }
  79
  80 int qmail_close(qq)
  81 struct qmail *qq;
  82 {
  83   int wstat;
  84
  85   qmail_put(qq,"",1);
  86   if (!qq->flagerr) if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;
  87   close(qq->fde);
  88
  89   if (wait_pid(&wstat,qq->pid) != qq->pid) return QMAIL_WAITPID;
  90   if (wait_crashed(wstat)) return QMAIL_CRASHED;
  91   switch(wait_exitcode(wstat)) {
  92     case 0: if (qq->flagerr) return QMAIL_BUG; return 0;
  93     case 112: return QMAIL_USAGE;
  94     case 115: return QMAIL_TOOLONG;
  95     case 103: case 104: case 105: case 106: case 108: return QMAIL_SYS;
  96     case 121: return QMAIL_READ;
  97     case 122: return QMAIL_WRITE;
  98     case 123: return QMAIL_NOMEM;
  99     case 124: return QMAIL_TIMEOUT;
 100     case 120: return QMAIL_EXECSOFT;
 101     default: /* 101 or 102 */ return QMAIL_BUG;
 102   }
 103 }