From 89b7b67a13ebb7965cc7f13ad0595e2194a2d34c Mon Sep 17 00:00:00 2001
From: Jannis Hoffmann <jannis@fehcom.de>
Date: Wed, 3 Jul 2024 15:48:04 +0200
Subject: add sqmail-4.2.29a

---
 src/qmail.c | 139 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/qmail.c

(limited to 'src/qmail.c')

diff --git a/src/qmail.c b/src/qmail.c
new file mode 100644
index 0000000..7bdfd29
--- /dev/null
+++ b/src/qmail.c
@@ -0,0 +1,139 @@
+#include <unistd.h>
+#include "readwrite.h"
+#include "buffer.h"
+#include "wait.h"
+#include "exit.h"
+#include "fd.h"
+#include "qmail.h"
+#include "auto_qmail.h"
+#include "env.h"
+
+static char *binqqargs[2] = { 0, 0 } ;
+
+static void setup_qqargs()
+{
+  if (!binqqargs[0])
+    binqqargs[0] = env_get("QMAILQUEUE");
+  if (!binqqargs[0])
+    binqqargs[0] = "bin/qmail-queue";
+}
+
+int qmail_open(struct qmail *qq)
+{
+  int pim[2];
+  int pie[2];
+
+  setup_qqargs();
+
+  if (pipe(pim) == -1) return -1;
+  if (pipe(pie) == -1) { close(pim[0]); close(pim[1]); return -1; }
+ 
+  switch (qq->pid = vfork()) {
+    case -1:
+      close(pim[0]); close(pim[1]);
+      close(pie[0]); close(pie[1]);
+      return -1;
+    case 0:
+      close(pim[1]);
+      close(pie[1]);
+      if (fd_move(0,pim[0]) == -1) _exit(120);
+      if (fd_move(1,pie[0]) == -1) _exit(120);
+      if (chdir(auto_qmail) == -1) _exit(61);
+      execv(*binqqargs,binqqargs);
+      _exit(120);
+  }
+
+  qq->fdm = pim[1]; close(pim[0]);
+  qq->fde = pie[1]; close(pie[0]);
+  buffer_init(&qq->ss,write,qq->fdm,qq->buf,sizeof(qq->buf));
+  qq->flagerr = 0;
+  return 0;
+}
+
+unsigned long qmail_qp(struct qmail *qq)
+{
+  return qq->pid;
+}
+
+void qmail_fail(struct qmail *qq)
+{
+  qq->flagerr = 1;
+}
+
+void qmail_put(struct qmail *qq,char *s,int len)
+{
+  if (!qq->flagerr) if (buffer_put(&qq->ss,s,len) == -1) qq->flagerr = 1;
+}
+
+void qmail_puts(struct qmail *qq,char *s)
+{
+  if (!qq->flagerr) if (buffer_puts(&qq->ss,s) == -1) qq->flagerr = 1;
+}
+
+void qmail_from(struct qmail *qq,char *s)
+{
+  if (buffer_flush(&qq->ss) == -1) qq->flagerr = 1;
+  close(qq->fdm);
+  buffer_init(&qq->ss,write,qq->fde,qq->buf,sizeof(qq->buf));
+  qmail_put(qq,"F",1);
+  qmail_puts(qq,s);
+  qmail_put(qq,"",1);
+}
+
+void qmail_to(struct qmail *qq,char *s)
+{
+  qmail_put(qq,"T",1);
+  qmail_puts(qq,s);
+  qmail_put(qq,"",1);
+}
+
+char *qmail_close(struct qmail *qq)
+{
+  int wstat;
+  int exitcode;
+
+  qmail_put(qq,"",1);
+  if (!qq->flagerr) 
+    if (buffer_flush(&qq->ss) == -1) qq->flagerr = 1;
+  close(qq->fde);
+
+  if (wait_pid(&wstat,qq->pid) != qq->pid)
+    return "Zqq waitpid surprise (#4.3.0)";
+  if (wait_crashed(wstat))
+    return "Zqq crashed (#4.3.0)";
+  exitcode = wait_exitcode(wstat);
+
+  switch (exitcode) {
+    case 0: if (!qq->flagerr) return ""; /* fall through */
+    case 11: return "Denvelope address too long for qq (#5.1.3)";
+    case 31: return "Dmail server permanently rejected message (#5.3.0)";
+    case 32: return "Vmail server does not accept message (#5.3.0)";
+    case 33: return "Smail server does not accept message (#5.3.0)";
+    case 34: return "Amail server does not accept message (#5.3.0)";
+    case 35: return "Imail server fails to verify DKIM signed message (#5.3.0)";
+    case 51: return "Zqq out of memory (#4.3.0)";
+    case 52: return "Zqq timeout (#4.3.0)";
+    case 53: return "Zqq write error or disk full (#4.3.0)";
+    case 54: return "Zqq read error (#4.3.0)";
+    case 55: return "Zqq unable to read configuration (#4.3.0)";
+    case 56: return "Zqq trouble making network connection (#4.3.0)";
+    case 61: return "Zqq trouble in home directory (#4.3.0)";
+    case 62: return "Zqq trouble creating files in queue (#4.3.0)";
+    case 63: /* qmail-queue: fstat/unlinking problem */
+    case 64: /* qmail-queue: linking pidfn -> messfn */
+    case 65: /* qmail-queue: exclusive open failed */
+    case 66: /* qmail-queue: linking intdfn -> todofn */
+    case 71: return "Zmail server temporarily rejected message (#4.3.0)";
+    case 72: return "Zconnection to mail server timed out (#4.4.1)";
+    case 73: return "Zconnection to mail server rejected (#4.4.1)";
+    case 74: return "Zcommunication with mail server failed (#4.4.2)";
+    case 91: /* fall through */
+    case 81: return "Zqq internal bug (#4.3.0)";
+    case 115: /* compatibility */
+    case 120: return "Zunable to exec qq (#4.3.0)";
+    default:
+      if ((exitcode >= 11) && (exitcode <= 40))
+        return "Dqq permanent problem (#5.3.0)";
+      return "Zqq temporary problem (#4.3.0)";
+  }
+}
-- 
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