101 lines
4.0 KiB
C
101 lines
4.0 KiB
C
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#ifndef HEADER_CURL_SMTP_H
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#define HEADER_CURL_SMTP_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "pingpong.h"
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#include "curl_sasl.h"
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/****************************************************************************
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* SMTP unique setup
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***************************************************************************/
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typedef enum {
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SMTP_STOP, /* do nothing state, stops the state machine */
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SMTP_SERVERGREET, /* waiting for the initial greeting immediately after
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a connect */
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SMTP_EHLO,
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SMTP_HELO,
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SMTP_STARTTLS,
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SMTP_UPGRADETLS, /* asynchronously upgrade the connection to SSL/TLS
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(multi mode only) */
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SMTP_AUTH,
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SMTP_COMMAND, /* VRFY, EXPN, NOOP, RSET and HELP */
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SMTP_MAIL, /* MAIL FROM */
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SMTP_RCPT, /* RCPT TO */
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SMTP_DATA,
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SMTP_POSTDATA,
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SMTP_QUIT,
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SMTP_LAST /* never used */
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} smtpstate;
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/* This SMTP struct is used in the Curl_easy. All SMTP data that is
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connection-oriented must be in smtp_conn to properly deal with the fact that
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perhaps the Curl_easy is changed between the times the connection is
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used. */
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struct SMTP {
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curl_pp_transfer transfer;
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char *custom; /* Custom Request */
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struct curl_slist *rcpt; /* Recipient list */
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int rcpt_last_error; /* The last error received for RCPT TO command */
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size_t eob; /* Number of bytes of the EOB (End Of Body) that
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have been received so far */
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BIT(rcpt_had_ok); /* Whether any of RCPT TO commands (depends on
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total number of recipients) succeeded so far */
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BIT(trailing_crlf); /* Specifies if the trailing CRLF is present */
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};
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/* smtp_conn is used for struct connection-oriented data in the connectdata
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struct */
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struct smtp_conn {
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struct pingpong pp;
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struct SASL sasl; /* SASL-related storage */
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smtpstate state; /* Always use smtp.c:state() to change state! */
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char *domain; /* Client address/name to send in the EHLO */
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BIT(ssldone); /* Is connect() over SSL done? */
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BIT(tls_supported); /* StartTLS capability supported by server */
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BIT(size_supported); /* If server supports SIZE extension according to
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RFC 1870 */
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BIT(utf8_supported); /* If server supports SMTPUTF8 extension according
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to RFC 6531 */
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BIT(auth_supported); /* AUTH capability supported by server */
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};
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extern const struct Curl_handler Curl_handler_smtp;
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extern const struct Curl_handler Curl_handler_smtps;
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/* this is the 5-bytes End-Of-Body marker for SMTP */
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#define SMTP_EOB "\x0d\x0a\x2e\x0d\x0a"
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#define SMTP_EOB_LEN 5
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#define SMTP_EOB_FIND_LEN 3
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/* if found in data, replace it with this string instead */
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#define SMTP_EOB_REPL "\x0d\x0a\x2e\x2e"
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#define SMTP_EOB_REPL_LEN 4
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CURLcode Curl_smtp_escape_eob(struct Curl_easy *data,
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const ssize_t nread,
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const ssize_t offset);
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#endif /* HEADER_CURL_SMTP_H */
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