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

   1 #include <stdlib.h>
   2 #include "substdio.h"
   3 #include "readwrite.h"
   4 #include "wait.h"
   5 #include "exit.h"
   6 #include "fork.h"
   7 #include "fd.h"
   8 #include "qmail.h"
   9 #include "auto_qmail.h"
  10
  11 static char *binqqargs[2] = { 0, 0 } ;
  12
  13 static void setup_qqargs()
  14 {
  15   if(!binqqargs[0])
  16     binqqargs[0] = getenv("QMAILQUEUE");
  17   if(!binqqargs[0])
  18     binqqargs[0] = "/usr/sbin/qmail-queue";
  19 }
  20
  21 int qmail_open(qq)
  22 struct qmail *qq;
  23 {
  24   int pim[2];
  25   int pie[2];
  26
  27   setup_qqargs();
  28   if (pipe(pim) == -1) return -1;
  29   if (pipe(pie) == -1) { close(pim[0]); close(pim[1]); return -1; }
  30
  31   switch(qq->pid = vfork()) {
  32     case -1:
  33       close(pim[0]); close(pim[1]);
  34       close(pie[0]); close(pie[1]);
  35       return -1;
  36     case 0:
  37       close(pim[1]);
  38       close(pie[1]);
  39       if (fd_move(0,pim[0]) == -1) _exit(120);
  40       if (fd_move(1,pie[0]) == -1) _exit(120);
  41       if (chdir(auto_qmail) == -1) _exit(61);
  42       execv(*binqqargs,binqqargs);
  43       _exit(120);
  44   }
  45
  46   qq->fdm = pim[1]; close(pim[0]);
  47   qq->fde = pie[1]; close(pie[0]);
  48   substdio_fdbuf(&qq->ss,write,qq->fdm,qq->buf,sizeof(qq->buf));
  49   qq->flagerr = 0;
  50   return 0;
  51 }
  52
  53 unsigned long qmail_qp(qq) struct qmail *qq;
  54 {
  55   return qq->pid;
  56 }
  57
  58 void qmail_fail(qq) struct qmail *qq;
  59 {
  60   qq->flagerr = 1;
  61 }
  62
  63 void qmail_put(qq,s,len) struct qmail *qq; char *s; int len;
  64 {
  65   if (!qq->flagerr) if (substdio_put(&qq->ss,s,len) == -1) qq->flagerr = 1;
  66 }
  67
  68 void qmail_puts(qq,s) struct qmail *qq; char *s;
  69 {
  70   if (!qq->flagerr) if (substdio_puts(&qq->ss,s) == -1) qq->flagerr = 1;
  71 }
  72
  73 void qmail_from(qq,s) struct qmail *qq; char *s;
  74 {
  75   if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;
  76   close(qq->fdm);
  77   substdio_fdbuf(&qq->ss,write,qq->fde,qq->buf,sizeof(qq->buf));
  78   qmail_put(qq,"F",1);
  79   qmail_puts(qq,s);
  80   qmail_put(qq,"",1);
  81 }
  82
  83 void qmail_to(qq,s) struct qmail *qq; char *s;
  84 {
  85   qmail_put(qq,"T",1);
  86   qmail_puts(qq,s);
  87   qmail_put(qq,"",1);
  88 }
  89
  90 char *qmail_close(qq)
  91 struct qmail *qq;
  92 {
  93   int wstat;
  94   int exitcode;
  95
  96   qmail_put(qq,"",1);
  97   if (!qq->flagerr) if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;
  98   close(qq->fde);
  99
 100   if (wait_pid(&wstat,qq->pid) != qq->pid)
 101     return "Zqq waitpid surprise (#4.3.0)";
 102   if (wait_crashed(wstat))
 103     return "Zqq crashed (#4.3.0)";
 104   exitcode = wait_exitcode(wstat);
 105
 106   switch(exitcode) {
 107     case 115: /* compatibility */
 108     case 11: return "Denvelope address too long for qq (#5.1.3)";
 109     case 31: return "Dmail server permanently rejected message (#5.3.0)";
 110     case 51: return "Zqq out of memory (#4.3.0)";
 111     case 52: return "Zqq timeout (#4.3.0)";
 112     case 53: return "Zqq write error or disk full (#4.3.0)";
 113     case 0: if (!qq->flagerr) return ""; /* fall through */
 114     case 54: return "Zqq read error (#4.3.0)";
 115     case 55: return "Zqq unable to read configuration (#4.3.0)";
 116     case 56: return "Zqq trouble making network connection (#4.3.0)";
 117     case 61: return "Zqq trouble in home directory (#4.3.0)";
 118     case 63:
 119     case 64:
 120     case 65:
 121     case 66:
 122     case 62: return "Zqq trouble creating files in queue (#4.3.0)";
 123     case 71: return "Zmail server temporarily rejected message (#4.3.0)";
 124     case 72: return "Zconnection to mail server timed out (#4.4.1)";
 125     case 73: return "Zconnection to mail server rejected (#4.4.1)";
 126     case 74: return "Zcommunication with mail server failed (#4.4.2)";
 127     case 91: /* fall through */
 128     case 81: return "Zqq internal bug (#4.3.0)";
 129     case 120: return "Zunable to exec qq (#4.3.0)";
 130     default:
 131       if ((exitcode >= 11) && (exitcode <= 40))
 132         return "Dqq permanent problem (#5.3.0)";
 133       return "Zqq temporary problem (#4.3.0)";
 134   }
 135 }