1 files changed, 94 insertions, 0 deletions
diff --git a/plugins/sudoers/sudoers_ctx_free.c b/plugins/sudoers/sudoers_ctx_free.c
new file mode 100644
index 0000000..b9c5af6
--- /dev/null
+++ b/plugins/sudoers/sudoers_ctx_free.c
@@ -0,0 +1,94 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2023 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sudoers.h>
+
+/*
+ * Free memory allocated for struct sudoers_context.
+ */
+void
+sudoers_ctx_free(struct sudoers_context *ctx)
+{
+    debug_decl(sudoers_ctx_free, SUDOERS_DEBUG_PLUGIN);
+
+    /* Free remaining references to password and group entries. */
+    if (ctx->user.pw != NULL)
+	sudo_pw_delref(ctx->user.pw);
+    if (ctx->user.gid_list != NULL)
+	sudo_gidlist_delref(ctx->user.gid_list);
+
+    /* Free dynamic contents of user_ctx. */
+    free(ctx->user.cwd);
+    free(ctx->user.name);
+    if (ctx->user.ttypath != NULL)
+	free(ctx->user.ttypath);
+    else
+	free(ctx->user.tty);
+    if (ctx->user.shost != ctx->user.host)
+	    free(ctx->user.shost);
+    free(ctx->user.host);
+    free(ctx->user.cmnd);
+    canon_path_free(ctx->user.cmnd_dir);
+    free(ctx->user.cmnd_args);
+    free(ctx->user.cmnd_list);
+    free(ctx->user.cmnd_stat);
+
+    /* Free remaining references to password and group entries. */
+    if (ctx->runas.pw != NULL)
+	sudo_pw_delref(ctx->runas.pw);
+    if (ctx->runas.gr != NULL)
+	sudo_gr_delref(ctx->runas.gr);
+    if (ctx->runas.list_pw != NULL)
+	sudo_pw_delref(ctx->runas.list_pw);
+
+    /* Free dynamic contents of ctx->runas. */
+    free(ctx->runas.cmnd);
+    free(ctx->runas.cmnd_saved);
+    if (ctx->runas.shost != ctx->runas.host)
+	free(ctx->runas.shost);
+    free(ctx->runas.host);
+#ifdef HAVE_SELINUX
+    free(ctx->runas.role);
+    free(ctx->runas.type);
+#endif
+#ifdef HAVE_APPARMOR
+    free(ctx->runas.apparmor_profile);
+#endif
+#ifdef HAVE_PRIV_SET
+    free(ctx->runas.privs);
+    free(ctx->runas.limitprivs);
+#endif
+
+    /* Free dynamic contents of ctx. */
+    free(ctx->source);
+
+    memset(ctx, 0, sizeof(*ctx));
+
+    debug_return;
+}