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-getpw.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 src/qmail-getpw.c

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

diff --git a/src/qmail-getpw.c b/src/qmail-getpw.c
new file mode 100644
index 0000000..f801c3c
--- /dev/null
+++ b/src/qmail-getpw.c
@@ -0,0 +1,85 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <pwd.h>
+#include <unistd.h>
+#include "error.h"
+#include "buffer.h"
+#include "exit.h"
+#include "byte.h"
+#include "str.h"
+#include "case.h"
+#include "fmt.h"
+#include "auto_usera.h"
+#include "auto_break.h"
+#include "qlx.h"
+
+#define GETPW_USERLEN 32
+
+char *local;
+struct passwd *pw;
+char *dash;
+char *extension;
+
+int userext()
+{
+  char username[GETPW_USERLEN];
+  struct stat st;
+
+  extension = local + str_len(local);
+  for (;;) {
+    if (extension - local < sizeof(username))
+      if (!*extension || (*extension == *auto_break)) {
+        byte_copy(username,extension - local,local);
+        username[extension - local] = 0;
+        case_lowers(username);
+        errno = 0;
+        pw = getpwnam(username);
+        if (errno == ETXTBSY) _exit(QLX_SYS);
+        if (pw)
+          if (pw->pw_uid)
+            if (stat(pw->pw_dir,&st) == 0) {
+              if (st.st_uid == pw->pw_uid) {
+                dash = "";
+                if (*extension) { ++extension; dash = "-"; }
+                return 1;
+              }
+            } else {
+              if (errno) _exit(QLX_NFS);
+            }
+      }
+      if (extension == local) return 0;
+    --extension;
+  }
+}
+
+char num[FMT_ULONG];
+
+int main(int argc,char **argv)
+{
+  local = argv[1];
+  if (!local) _exit(100);
+
+  if (!userext()) {
+    extension = local;
+    dash = "-";
+    pw = getpwnam(auto_usera);
+  }
+
+  if (!pw) _exit(QLX_NOALIAS);
+
+  buffer_puts(buffer_1small,pw->pw_name);
+  buffer_put(buffer_1small,"",1);
+  buffer_put(buffer_1small,num,fmt_ulong(num,(long) pw->pw_uid));
+  buffer_put(buffer_1small,"",1);
+  buffer_put(buffer_1small,num,fmt_ulong(num,(long) pw->pw_gid));
+  buffer_put(buffer_1small,"",1);
+  buffer_puts(buffer_1small,pw->pw_dir);
+  buffer_put(buffer_1small,"",1);
+  buffer_puts(buffer_1small,dash);
+  buffer_put(buffer_1small,"",1);
+  buffer_puts(buffer_1small,extension);
+  buffer_put(buffer_1small,"",1);
+  buffer_flush(buffer_1small);
+
+  _exit(0);
+}
-- 
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