1 files changed, 59 insertions, 0 deletions
diff --git a/plugins/sudoers/resolve_cmnd.c b/plugins/sudoers/resolve_cmnd.c
new file mode 100644
index 0000000..24e34de
--- /dev/null
+++ b/plugins/sudoers/resolve_cmnd.c
@@ -0,0 +1,59 @@
+/*
+ * 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 <sudoers.h>
+
+/*
+ * Calls find_path() first with PERM_RUNAS, falling back to PERM_USER.
+ * Returns FOUND if the command was found, NOT_FOUND if it was not found,
+ * NOT_FOUND_DOT if it would have been found but it is in '.' and
+ * def_ignore_dot is set or NOT_FOUND_ERROR if an error occurred.
+ * The caller is responsible for freeing the output file.
+ */
+int
+resolve_cmnd(struct sudoers_context *ctx, const char *infile,
+    char **outfile, const char *path)
+{
+    int ret = NOT_FOUND_ERROR;
+    debug_decl(resolve_cmnd, SUDOERS_DEBUG_UTIL);
+
+    if (!set_perms(ctx, PERM_RUNAS))
+        goto done;
+    ret = find_path(infile, outfile, ctx->user.cmnd_stat, path,
+        def_ignore_dot, NULL);
+    if (!restore_perms())
+        goto done;
+    if (ret == NOT_FOUND) {
+        /* Failed as runas user, try as invoking user. */
+        if (!set_perms(ctx, PERM_USER))
+            goto done;
+        ret = find_path(infile, outfile, ctx->user.cmnd_stat, path,
+            def_ignore_dot, NULL);
+        if (!restore_perms())
+            goto done;
+    }
+done:
+    debug_return_int(ret);
+}