Remove 'shadow' and merge into 'nss'

The majority of shadow routines are entry points for nss functionality.
This commit removes the 'shadow' subdirectory and moves all
functionality and tests to 'nss'.  References to shadow/ are accordingly
changed.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 164 insertions, 0 deletions

diff --git a/nss/tst-putspent.c b/nss/tst-putspent.c
new file mode 100644
index 0000000000..7b85096636
--- /dev/null
+++ b/nss/tst-putspent.c
@@ -0,0 +1,164 @@
+/* Test for processing of invalid shadow entries.  [BZ #18724]
+   Copyright (C) 2015-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <shadow.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static bool errors;
+
+static void
+check (struct spwd p, const char *expected)
+{
+  char *buf;
+  size_t buf_size;
+  FILE *f = open_memstream (&buf, &buf_size);
+
+  if (f == NULL)
+    {
+      printf ("open_memstream: %m\n");
+      errors = true;
+      return;
+    }
+
+  int ret = putspent (&p, f);
+
+  if (expected == NULL)
+    {
+      if (ret == -1)
+	{
+	  if (errno != EINVAL)
+	    {
+	      printf ("putspent: unexpected error code: %m\n");
+	      errors = true;
+	    }
+	}
+      else
+	{
+	  printf ("putspent: unexpected success (\"%s\")\n", p.sp_namp);
+	  errors = true;
+	}
+    }
+  else
+    {
+      /* Expect success.  */
+      size_t expected_length = strlen (expected);
+      if (ret == 0)
+	{
+	  long written = ftell (f);
+
+	  if (written <= 0 || fflush (f) < 0)
+	    {
+	      printf ("stream error: %m\n");
+	      errors = true;
+	    }
+	  else if (buf[written - 1] != '\n')
+	    {
+	      printf ("FAILED: \"%s\" without newline\n", expected);
+	      errors = true;
+	    }
+	  else if (strncmp (buf, expected, written - 1) != 0
+		   || written - 1 != expected_length)
+	    {
+	      printf ("FAILED: \"%s\" (%ld), expected \"%s\" (%zu)\n",
+		      buf, written - 1, expected, expected_length);
+	      errors = true;
+	    }
+	}
+      else
+	{
+	  printf ("FAILED: putspent (expected \"%s\"): %m\n", expected);
+	  errors = true;
+	}
+    }
+
+  fclose (f);
+  free (buf);
+}
+
+static int
+do_test (void)
+{
+  check ((struct spwd) {
+      .sp_namp = (char *) "root",
+    },
+    "root::0:0:0:0:0:0:0");
+  check ((struct spwd) {
+      .sp_namp = (char *) "root",
+      .sp_pwdp = (char *) "password",
+    },
+    "root:password:0:0:0:0:0:0:0");
+  check ((struct spwd) {
+      .sp_namp = (char *) "root",
+      .sp_pwdp = (char *) "password",
+      .sp_lstchg = -1,
+      .sp_min = -1,
+      .sp_max = -1,
+      .sp_warn = -1,
+      .sp_inact = -1,
+      .sp_expire = -1,
+      .sp_flag = -1
+    },
+    "root:password:::::::");
+  check ((struct spwd) {
+      .sp_namp = (char *) "root",
+      .sp_pwdp = (char *) "password",
+      .sp_lstchg = 1,
+      .sp_min = 2,
+      .sp_max = 3,
+      .sp_warn = 4,
+      .sp_inact = 5,
+      .sp_expire = 6,
+      .sp_flag = 7
+    },
+    "root:password:1:2:3:4:5:6:7");
+
+  /* Bad values.  */
+  {
+    static const char *const bad_strings[] = {
+      ":",
+      "\n",
+      ":bad",
+      "\nbad",
+      "b:ad",
+      "b\nad",
+      "bad:",
+      "bad\n",
+      "b:a\nd",
+      NULL
+    };
+    for (const char *const *bad = bad_strings; *bad != NULL; ++bad)
+      {
+	check ((struct spwd) {
+	    .sp_namp = (char *) *bad,
+	  }, NULL);
+	check ((struct spwd) {
+	    .sp_namp = (char *) "root",
+	    .sp_pwdp = (char *) *bad,
+	  }, NULL);
+      }
+  }
+
+  return errors;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"