mdw@git.distorted.org.uk Git - ezmlm/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 #include "alloc.h"
  11 #include "stralloc.h"
  12 #include "idx.h"
  13
  14 static char *binqqargs[2] = { 0, 0 } ;
  15
  16 static void setup_qqargs()
  17 {
  18   if(!binqqargs[0])
  19     binqqargs[0] = getenv("QMAILQUEUE");
  20   if(!binqqargs[0])
  21     binqqargs[0] = "/usr/sbin/qmail-queue";
  22 }
  23
  24 int qmail_open(qq,sa)
  25 struct qmail *qq;
  26 stralloc *sa;
  27 {
  28   int pim[2];
  29   int pie[2];
  30   unsigned i,j;
  31   char **cpp;
  32
  33   setup_qqargs();
  34
  35   qq->msgbytes = 0L;
  36   if (pipe(pim) == -1) return -1;
  37   if (pipe(pie) == -1) { close(pim[0]); close(pim[1]); return -1; }
  38
  39   switch(qq->pid = vfork()) {
  40     case -1:
  41       close(pim[0]); close(pim[1]);
  42       close(pie[0]); close(pie[1]);
  43       return -1;
  44     case 0:
  45       close(pim[1]);
  46       close(pie[1]);
  47       if (fd_move(0,pim[0]) == -1) _exit(120);
  48       if (fd_move(1,pie[0]) == -1) _exit(120);
  49       if (chdir(auto_qmail) == -1) _exit(61);
  50       j = 2;                            /* empty sa - qmqpc c control args */
  51       if (sa) {                         /* count args */
  52         for (i = 0; i + 1 < sa->len; i++) {
  53           if (sa->s[i] == '\0') j++;
  54         }                               /* make space */
  55         if (!(cpp = (char **) alloc(j * sizeof (char *)))) _exit(51);
  56         cpp[0] = PROG_QMAIL_QMQPC;
  57         cpp[j - 1] = (char *) 0;
  58         if (sa->len) cpp[1] = sa->s;
  59         j = 2;
  60         for (i = 0; i + 1 < sa->len; i++) {
  61           if (sa->s[i] == '\0')
  62             cpp[j++] = sa->s + i + 1;   /* build args */
  63         }
  64         execv(*cpp,cpp);
  65       } else
  66         execv(*binqqargs,binqqargs);
  67       _exit(120);
  68   }
  69
  70   qq->fdm = pim[1]; close(pim[0]);
  71   qq->fde = pie[1]; close(pie[0]);
  72   substdio_fdbuf(&qq->ss,write,qq->fdm,qq->buf,sizeof(qq->buf));
  73   qq->flagerr = 0;
  74   return 0;
  75 }
  76
  77 unsigned long qmail_qp(qq) struct qmail *qq;
  78 {
  79   return qq->pid;
  80 }
  81
  82 void qmail_fail(qq) struct qmail *qq;
  83 {
  84   qq->flagerr = 1;
  85 }
  86
  87 void qmail_put(qq,s,len) struct qmail *qq; char *s; int len;
  88 {
  89   if (!qq->flagerr) if (substdio_put(&qq->ss,s,len) == -1) qq->flagerr = 1;
  90   qq->msgbytes += len;
  91 }
  92
  93 void qmail_puts(qq,s) struct qmail *qq; char *s;
  94 {
  95   register int len;
  96   if (!qq->flagerr) {
  97     len = str_len(s);
  98     if (substdio_put(&qq->ss,s,len) == -1) qq->flagerr = 1;
  99   }
 100   qq->msgbytes += len;
 101 }
 102
 103 void qmail_from(qq,s) struct qmail *qq; char *s;
 104 {
 105   if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;
 106   close(qq->fdm);
 107   substdio_fdbuf(&qq->ss,write,qq->fde,qq->buf,sizeof(qq->buf));
 108   qmail_put(qq,"F",1);
 109   qmail_puts(qq,s);
 110   qmail_put(qq,"",1);
 111 }
 112
 113 void qmail_to(qq,s) struct qmail *qq; char *s;
 114 {
 115   qmail_put(qq,"T",1);
 116   qmail_puts(qq,s);
 117   qmail_put(qq,"",1);
 118 }
 119
 120 char *qmail_close(qq)
 121 struct qmail *qq;
 122 {
 123   int wstat;
 124   int exitcode;
 125
 126   qmail_put(qq,"",1);
 127   if (!qq->flagerr) if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;
 128   close(qq->fde);
 129
 130   if (wait_pid(&wstat,qq->pid) != qq->pid)
 131     return "Zqq waitpid surprise (#4.3.0)";
 132   if (wait_crashed(wstat))
 133     return "Zqq crashed (#4.3.0)";
 134   exitcode = wait_exitcode(wstat);
 135
 136   switch(exitcode) {
 137     case 115: /* compatibility */
 138     case 11: return "Denvelope address too long for qq (#5.1.3)";
 139     case 31: return "Dmail server permanently rejected message (#5.3.0)";
 140     case 51: return "Zqq out of memory (#4.3.0)";
 141     case 52: return "Zqq timeout (#4.3.0)";
 142     case 53: return "Zqq write error or disk full (#4.3.0)";
 143     case 0: if (!qq->flagerr) return ""; /* fall through */
 144     case 54: return "Zqq read error (#4.3.0)";
 145     case 55: return "Zqq unable to read configuration (#4.3.0)";
 146     case 56: return "Zqq trouble making network connection (#4.3.0)";
 147     case 61: return "Zqq trouble in home directory (#4.3.0)";
 148     case 63:
 149     case 64:
 150     case 65:
 151     case 66:
 152     case 62: return "Zqq trouble creating files in queue (#4.3.0)";
 153     case 71: return "Zmail server temporarily rejected message (#4.3.0)";
 154     case 72: return "Zconnection to mail server timed out (#4.4.1)";
 155     case 73: return "Zconnection to mail server rejected (#4.4.1)";
 156     case 74: return "Zcommunication with mail server failed (#4.4.2)";
 157     case 91: /* fall through */
 158     case 81: return "Zqq internal bug (#4.3.0)";
 159     case 120: return "Zunable to exec qq (#4.3.0)";
 160     default:
 161       if ((exitcode >= 11) && (exitcode <= 40))
 162         return "Dqq permanent problem (#5.3.0)";
 163       return "Zqq temporary problem (#4.3.0)";
 164   }
 165 }