--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/lib/smtp.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,91 @@
+#ifndef HEADER_CURL_SMTP_H
+#define HEADER_CURL_SMTP_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2009 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "pingpong.h"
+#include "curl_sasl.h"
+
+/****************************************************************************
+ * SMTP unique setup
+ ***************************************************************************/
+typedef enum {
+  SMTP_STOP,        /* do nothing state, stops the state machine */
+  SMTP_SERVERGREET, /* waiting for the initial greeting immediately after
+                       a connect */
+  SMTP_EHLO,
+  SMTP_HELO,
+  SMTP_STARTTLS,
+  SMTP_UPGRADETLS,  /* asynchronously upgrade the connection to SSL/TLS
+                       (multi mode only) */
+  SMTP_AUTH,
+  SMTP_COMMAND,     /* VRFY, EXPN, NOOP, RSET and HELP */
+  SMTP_MAIL,        /* MAIL FROM */
+  SMTP_RCPT,        /* RCPT TO */
+  SMTP_DATA,
+  SMTP_POSTDATA,
+  SMTP_QUIT,
+  SMTP_LAST         /* never used */
+} smtpstate;
+
+/* This SMTP struct is used in the Curl_easy. All SMTP data that is
+   connection-oriented must be in smtp_conn to properly deal with the fact that
+   perhaps the Curl_easy is changed between the times the connection is
+   used. */
+struct SMTP {
+  curl_pp_transfer transfer;
+  char *custom;            /* Custom Request */
+  struct curl_slist *rcpt; /* Recipient list */
+  size_t eob;              /* Number of bytes of the EOB (End Of Body) that
+                              have been received so far */
+  bool trailing_crlf;      /* Specifies if the tailing CRLF is present */
+};
+
+/* smtp_conn is used for struct connection-oriented data in the connectdata
+   struct */
+struct smtp_conn {
+  struct pingpong pp;
+  smtpstate state;         /* Always use smtp.c:state() to change state! */
+  bool ssldone;            /* Is connect() over SSL done? */
+  char *domain;            /* Client address/name to send in the EHLO */
+  struct SASL sasl;        /* SASL-related storage */
+  bool tls_supported;      /* StartTLS capability supported by server */
+  bool size_supported;     /* If server supports SIZE extension according to
+                              RFC 1870 */
+  bool auth_supported;     /* AUTH capability supported by server */
+};
+
+extern const struct Curl_handler Curl_handler_smtp;
+extern const struct Curl_handler Curl_handler_smtps;
+
+/* this is the 5-bytes End-Of-Body marker for SMTP */
+#define SMTP_EOB "\x0d\x0a\x2e\x0d\x0a"
+#define SMTP_EOB_LEN 5
+#define SMTP_EOB_FIND_LEN 3
+
+/* if found in data, replace it with this string instead */
+#define SMTP_EOB_REPL "\x0d\x0a\x2e\x2e"
+#define SMTP_EOB_REPL_LEN 4
+
+CURLcode Curl_smtp_escape_eob(struct connectdata *conn, const ssize_t nread);
+
+#endif /* HEADER_CURL_SMTP_H */