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