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-newu.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/qmail-newu.c

(limited to 'src/qmail-newu.c')

diff --git a/src/qmail-newu.c b/src/qmail-newu.c
new file mode 100644
index 0000000..d5e9baa
--- /dev/null
+++ b/src/qmail-newu.c
@@ -0,0 +1,132 @@
+#include <unistd.h>
+#include <sys/stat.h>
+#include <stdio.h> // rename
+#include "stralloc.h"
+#include "getln.h"
+#include "buffer.h"
+#include "cdbmake.h"
+#include "exit.h"
+#include "open.h"
+#include "logmsg.h"
+#include "case.h"
+#include "byte.h"
+#include "auto_qmail.h"
+
+#define WHO "qmail-newu"
+
+int rename(const char *,const char *); // stdio.h
+
+void die_chdir()
+{
+  logmsg(WHO,110,ERROR,"unable to chdir");
+}
+void die_nomem()
+{
+  logmsg(WHO,111,FATAL,"fatal: out of memory");
+}
+void die_opena()
+{
+  logmsg(WHO,112,ERROR,"unable to open users/assign");
+}
+void die_reada()
+{
+  logmsg(WHO,110,ERROR,"unable to read users/assign");
+}
+void die_format()
+{
+  logmsg(WHO,112,ERROR,"bad format in users/assign");
+}
+void die_opent()
+{
+  logmsg(WHO,112,ERROR,"unable to open users/assign.cdb.tmp");
+}
+void die_writet()
+{
+  logmsg(WHO,112,ERROR,"unable to write users/assign.cdb.tmp");
+}
+void die_rename()
+{
+  logmsg(WHO,112,ERROR,"unable to move users/cdb.tmp to users/assign.cdb");
+}
+
+struct cdb_make cdb;
+stralloc key = {0};
+stralloc data = {0};
+
+char inbuf[1024];
+buffer bi;
+
+int fd;
+int fdtemp;
+
+stralloc line = {0};
+int match;
+
+stralloc wildchars = {0};
+
+int main()
+{
+  int i;
+  int numcolons;
+
+  umask(033);
+  if (chdir(auto_qmail) == -1) die_chdir();
+
+  fd = open_read("users/assign");
+  if (fd == -1) die_opena();
+
+  buffer_init(&bi,read,fd,inbuf,sizeof(inbuf));
+
+  fdtemp = open_trunc("users/assign.cdb.tmp");
+  if (fdtemp == -1) die_opent();
+
+  if (cdb_make_start(&cdb,fdtemp) == -1) die_writet();
+
+  if (!stralloc_copys(&wildchars,"")) die_nomem();
+
+  for (;;) {
+    if (getln(&bi,&line,&match,'\n') != 0) die_reada();
+    if (line.len && (line.s[0] == '.')) break;
+    if (!match) die_format();
+
+    if (byte_chr(line.s,line.len,'\0') < line.len) die_format();
+    i = byte_chr(line.s,line.len,':');
+    if (i == line.len) die_format();
+    if (i == 0) die_format();
+    if (!stralloc_copys(&key,"!")) die_nomem();
+    if (line.s[0] == '+') {
+      if (!stralloc_catb(&key,line.s + 1,i - 1)) die_nomem();
+      case_lowerb(key.s,key.len);
+      if (i >= 2)
+        if (byte_chr(wildchars.s,wildchars.len,line.s[i - 1]) == wildchars.len)
+      if (!stralloc_append(&wildchars,line.s + i - 1)) die_nomem();
+    }
+    else {
+      if (!stralloc_catb(&key,line.s + 1,i - 1)) die_nomem();
+      if (!stralloc_0(&key)) die_nomem();
+      case_lowerb(key.s,key.len);
+    }
+
+    if (!stralloc_copyb(&data,line.s + i + 1,line.len - i - 1)) die_nomem();
+
+    numcolons = 0;
+    for (i = 0; i < data.len; ++i)
+      if (data.s[i] == ':') {
+        data.s[i] = 0;
+        if (++numcolons == 6) break;
+      }
+    if (numcolons < 6) die_format();
+    data.len = i;
+
+    if (cdb_make_add(&cdb,key.s,key.len,data.s,data.len) == -1) die_writet();
+  }
+
+  if (cdb_make_add(&cdb,"",0,wildchars.s,wildchars.len) == -1) die_writet();
+
+  if (cdb_make_finish(&cdb) == -1) die_writet();
+  if (fsync(fdtemp) == -1) die_writet();
+  if (close(fdtemp) == -1) die_writet(); /* NFS stupidity */
+  if (rename("users/assign.cdb.tmp","users/assign.cdb") == -1) die_rename();
+
+  _exit(0);
+}
-- 
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