Adding upstream version 1:4.13+dfsg1.upstream/1%4.13+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 207 insertions, 0 deletions

diff --git a/lib/pwio.c b/lib/pwio.c
new file mode 100644
index 0000000..e59b473
--- /dev/null
+++ b/lib/pwio.c
@@ -0,0 +1,207 @@
+/*
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "prototypes.h"
+#include "defines.h"
+#include <pwd.h>
+#include <stdio.h>
+#include "commonio.h"
+#include "pwio.h"
+
+static /*@null@*/ /*@only@*/void *passwd_dup (const void *ent)
+{
+	const struct passwd *pw = ent;
+
+	return __pw_dup (pw);
+}
+
+static void passwd_free (/*@out@*/ /*@only@*/void *ent)
+{
+	struct passwd *pw = ent;
+
+	pw_free (pw);
+}
+
+static const char *passwd_getname (const void *ent)
+{
+	const struct passwd *pw = ent;
+
+	return pw->pw_name;
+}
+
+static void *passwd_parse (const char *line)
+{
+	return (void *) sgetpwent (line);
+}
+
+static int passwd_put (const void *ent, FILE * file)
+{
+	const struct passwd *pw = ent;
+
+	if (   (NULL == pw)
+	    || (valid_field (pw->pw_name, ":\n") == -1)
+	    || (valid_field (pw->pw_passwd, ":\n") == -1)
+	    || (pw->pw_uid == (uid_t)-1)
+	    || (pw->pw_gid == (gid_t)-1)
+	    || (valid_field (pw->pw_gecos, ":\n") == -1)
+	    || (valid_field (pw->pw_dir, ":\n") == -1)
+	    || (valid_field (pw->pw_shell, ":\n") == -1)
+	    || (strlen (pw->pw_name) + strlen (pw->pw_passwd) +
+	        strlen (pw->pw_gecos) + strlen (pw->pw_dir) +
+	        strlen (pw->pw_shell) + 100 > PASSWD_ENTRY_MAX_LENGTH)) {
+		return -1;
+	}
+
+	return (putpwent (pw, file) == -1) ? -1 : 0;
+}
+
+static struct commonio_ops passwd_ops = {
+	passwd_dup,
+	passwd_free,
+	passwd_getname,
+	passwd_parse,
+	passwd_put,
+	fgets,
+	fputs,
+	NULL,			/* open_hook */
+	NULL			/* close_hook */
+};
+
+static struct commonio_db passwd_db = {
+	PASSWD_FILE,		/* filename */
+	&passwd_ops,		/* ops */
+	NULL,			/* fp */
+#ifdef WITH_SELINUX
+	NULL,			/* scontext */
+#endif
+	0644,                   /* st_mode */
+	0,                      /* st_uid */
+	0,                      /* st_gid */
+	NULL,			/* head */
+	NULL,			/* tail */
+	NULL,			/* cursor */
+	false,			/* changed */
+	false,			/* isopen */
+	false,			/* locked */
+	false,			/* readonly */
+	false			/* setname */
+};
+
+int pw_setdbname (const char *filename)
+{
+	return commonio_setname (&passwd_db, filename);
+}
+
+/*@observer@*/const char *pw_dbname (void)
+{
+	return passwd_db.filename;
+}
+
+int pw_lock (void)
+{
+	return commonio_lock (&passwd_db);
+}
+
+int pw_open (int mode)
+{
+	return commonio_open (&passwd_db, mode);
+}
+
+/*@observer@*/ /*@null@*/const struct passwd *pw_locate (const char *name)
+{
+	return commonio_locate (&passwd_db, name);
+}
+
+/*@observer@*/ /*@null@*/const struct passwd *pw_locate_uid (uid_t uid)
+{
+	const struct passwd *pwd;
+
+	pw_rewind ();
+	while (   ((pwd = pw_next ()) != NULL)
+	       && (pwd->pw_uid != uid)) {
+	}
+
+	return pwd;
+}
+
+int pw_update (const struct passwd *pw)
+{
+	return commonio_update (&passwd_db, (const void *) pw);
+}
+
+int pw_remove (const char *name)
+{
+	return commonio_remove (&passwd_db, name);
+}
+
+int pw_rewind (void)
+{
+	return commonio_rewind (&passwd_db);
+}
+
+/*@observer@*/ /*@null@*/const struct passwd *pw_next (void)
+{
+	return commonio_next (&passwd_db);
+}
+
+int pw_close (void)
+{
+	return commonio_close (&passwd_db);
+}
+
+int pw_unlock (void)
+{
+	return commonio_unlock (&passwd_db);
+}
+
+/*@null@*/struct commonio_entry *__pw_get_head (void)
+{
+	return passwd_db.head;
+}
+
+void __pw_del_entry (const struct commonio_entry *ent)
+{
+	commonio_del_entry (&passwd_db, ent);
+}
+
+struct commonio_db *__pw_get_db (void)
+{
+	return &passwd_db;
+}
+
+static int pw_cmp (const void *p1, const void *p2)
+{
+	uid_t u1, u2;
+
+	if ((*(struct commonio_entry **) p1)->eptr == NULL)
+		return 1;
+	if ((*(struct commonio_entry **) p2)->eptr == NULL)
+		return -1;
+
+	u1 = ((struct passwd *) (*(struct commonio_entry **) p1)->eptr)->pw_uid;
+	u2 = ((struct passwd *) (*(struct commonio_entry **) p2)->eptr)->pw_uid;
+
+	if (u1 < u2)
+		return -1;
+	else if (u1 > u2)
+		return 1;
+	else
+		return 0;
+}
+
+/* Sort entries by UID */
+int pw_sort ()
+{
+	return commonio_sort (&passwd_db, pw_cmp);
+}