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      1 #ifndef HEADER_CURL_IMAP_H
      2 #define HEADER_CURL_IMAP_H
      3 /***************************************************************************
      4  *                                  _   _ ____  _
      5  *  Project                     ___| | | |  _ \| |
      6  *                             / __| | | | |_) | |
      7  *                            | (__| |_| |  _ <| |___
      8  *                             \___|\___/|_| \_\_____|
      9  *
     10  * Copyright (C) 2009 - 2017, Daniel Stenberg, <daniel (at) haxx.se>, et al.
     11  *
     12  * This software is licensed as described in the file COPYING, which
     13  * you should have received as part of this distribution. The terms
     14  * are also available at https://curl.haxx.se/docs/copyright.html.
     15  *
     16  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     17  * copies of the Software, and permit persons to whom the Software is
     18  * furnished to do so, under the terms of the COPYING file.
     19  *
     20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     21  * KIND, either express or implied.
     22  *
     23  ***************************************************************************/
     24 
     25 #include "pingpong.h"
     26 #include "curl_sasl.h"
     27 
     28 /****************************************************************************
     29  * IMAP unique setup
     30  ***************************************************************************/
     31 typedef enum {
     32   IMAP_STOP,         /* do nothing state, stops the state machine */
     33   IMAP_SERVERGREET,  /* waiting for the initial greeting immediately after
     34                         a connect */
     35   IMAP_CAPABILITY,
     36   IMAP_STARTTLS,
     37   IMAP_UPGRADETLS,   /* asynchronously upgrade the connection to SSL/TLS
     38                        (multi mode only) */
     39   IMAP_AUTHENTICATE,
     40   IMAP_LOGIN,
     41   IMAP_LIST,
     42   IMAP_SELECT,
     43   IMAP_FETCH,
     44   IMAP_FETCH_FINAL,
     45   IMAP_APPEND,
     46   IMAP_APPEND_FINAL,
     47   IMAP_SEARCH,
     48   IMAP_LOGOUT,
     49   IMAP_LAST          /* never used */
     50 } imapstate;
     51 
     52 /* This IMAP struct is used in the Curl_easy. All IMAP data that is
     53    connection-oriented must be in imap_conn to properly deal with the fact that
     54    perhaps the Curl_easy is changed between the times the connection is
     55    used. */
     56 struct IMAP {
     57   curl_pp_transfer transfer;
     58   char *mailbox;          /* Mailbox to select */
     59   char *uidvalidity;      /* UIDVALIDITY to check in select */
     60   char *uid;              /* Message UID to fetch */
     61   char *section;          /* Message SECTION to fetch */
     62   char *partial;          /* Message PARTIAL to fetch */
     63   char *query;            /* Query to search for */
     64   char *custom;           /* Custom request */
     65   char *custom_params;    /* Parameters for the custom request */
     66 };
     67 
     68 /* imap_conn is used for struct connection-oriented data in the connectdata
     69    struct */
     70 struct imap_conn {
     71   struct pingpong pp;
     72   imapstate state;            /* Always use imap.c:state() to change state! */
     73   bool ssldone;               /* Is connect() over SSL done? */
     74   bool preauth;               /* Is this connection PREAUTH? */
     75   struct SASL sasl;           /* SASL-related parameters */
     76   unsigned int preftype;      /* Preferred authentication type */
     77   int cmdid;                  /* Last used command ID */
     78   char resptag[5];            /* Response tag to wait for */
     79   bool tls_supported;         /* StartTLS capability supported by server */
     80   bool login_disabled;        /* LOGIN command disabled by server */
     81   bool ir_supported;          /* Initial response supported by server */
     82   char *mailbox;              /* The last selected mailbox */
     83   char *mailbox_uidvalidity;  /* UIDVALIDITY parsed from select response */
     84 };
     85 
     86 extern const struct Curl_handler Curl_handler_imap;
     87 extern const struct Curl_handler Curl_handler_imaps;
     88 
     89 /* Authentication type flags */
     90 #define IMAP_TYPE_CLEARTEXT (1 << 0)
     91 #define IMAP_TYPE_SASL      (1 << 1)
     92 
     93 /* Authentication type values */
     94 #define IMAP_TYPE_NONE      0
     95 #define IMAP_TYPE_ANY       ~0U
     96 
     97 #endif /* HEADER_CURL_IMAP_H */
     98