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572 lines
16 KiB
C
572 lines
16 KiB
C
/* -*- mode: c; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
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**
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** Copyright (C) 2010-2013 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#ifndef __MU_MSG_H__
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#define __MU_MSG_H__
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#include <mu-flags.h>
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#include <mu-msg-fields.h>
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#include <mu-msg-prio.h>
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#include <mu-util.h> /* for MuError and XapianDocument */
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G_BEGIN_DECLS
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struct _MuMsg;
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typedef struct _MuMsg MuMsg;
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/* options for various functions */
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enum _MuMsgOptions {
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MU_MSG_OPTION_NONE = 0,
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/* 1 << 0 is still free! */
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/* for -> sexp conversion */
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MU_MSG_OPTION_HEADERS_ONLY = 1 << 1,
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MU_MSG_OPTION_EXTRACT_IMAGES = 1 << 2,
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/* below options are for checking signatures; only effective
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* if mu was built with crypto support */
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MU_MSG_OPTION_VERIFY = 1 << 4,
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MU_MSG_OPTION_AUTO_RETRIEVE = 1 << 5,
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MU_MSG_OPTION_USE_AGENT = 1 << 6,
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/* MU_MSG_OPTION_USE_PKCS7 = 1 << 7, /\* gpg is the default *\/ */
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/* get password from console if needed */
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MU_MSG_OPTION_CONSOLE_PASSWORD = 1 << 7,
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MU_MSG_OPTION_DECRYPT = 1 << 8,
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/* misc */
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MU_MSG_OPTION_OVERWRITE = 1 << 9,
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MU_MSG_OPTION_USE_EXISTING = 1 << 10,
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/* recurse into submessages */
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MU_MSG_OPTION_RECURSE_RFC822 = 1 << 11
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};
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typedef enum _MuMsgOptions MuMsgOptions;
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/**
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* create a new MuMsg* instance which parses a message and provides
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* read access to its properties; call mu_msg_unref when done with it.
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*
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* @param path full path to an email message file
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* @param mdir the maildir for this message; ie, if the path is
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* ~/Maildir/foo/bar/cur/msg, the maildir would be foo/bar; you can
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* pass NULL for this parameter, in which case some maildir-specific
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* information is not available.
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* @param err receive error information (MU_ERROR_FILE or
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* MU_ERROR_GMIME), or NULL. There will only be err info if the
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* function returns NULL
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*
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* @return a new MuMsg instance or NULL in case of error; call
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* mu_msg_unref when done with this message
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*/
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MuMsg *mu_msg_new_from_file (const char* filepath, const char *maildir,
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GError **err)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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/**
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* create a new MuMsg* instance based on a Xapian::Document
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*
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* @param store a MuStore ptr
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* @param doc a ptr to a Xapian::Document (but cast to XapianDocument,
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* because this is C not C++). MuMsg takes _ownership_ of this pointer;
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* don't touch it afterwards
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* @param err receive error information, or NULL. There
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* will only be err info if the function returns NULL
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*
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* @return a new MuMsg instance or NULL in case of error; call
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* mu_msg_unref when done with this message
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*/
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MuMsg *mu_msg_new_from_doc (XapianDocument* doc, GError **err)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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/**
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* if we don't have a message file yet (because this message is
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* database-backed), load it.
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*
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* @param msg a MuMsg
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* @param err receives error information
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*
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* @return TRUE if this succceeded, FALSE in case of error
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*/
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gboolean mu_msg_load_msg_file (MuMsg *msg, GError **err);
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/**
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* close the file-backend, if any; this function is for the use case
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* where you have a large amount of messages where you need some
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* file-backed field (body or attachments). If you don't close the
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* file-backend after retrieving the desired field, you'd quickly run
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* out of file descriptors. If this message does not have a
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* file-backend, do nothing.
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*
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* @param msg a message object
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*/
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void mu_msg_unload_msg_file (MuMsg *msg);
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/**
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* increase the reference count for this message
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*
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* @param msg a message
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*
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* @return the message with its reference count increased, or NULL in
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* case of error.
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*/
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MuMsg *mu_msg_ref (MuMsg *msg);
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/**
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* decrease the reference count for this message. if the reference
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* count reaches 0, the message will be destroyed.
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*
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* @param msg a message
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*/
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void mu_msg_unref (MuMsg *msg);
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/**
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* cache the values from the backend (file or db), so we don't the
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* backend anymore
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*
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* @param self a message
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*/
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void mu_msg_cache_values (MuMsg *self);
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/**
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* get the plain text body of this message
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*
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* @param msg a valid MuMsg* instance
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* @param opts options for getting the body
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*
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* @return the plain text body or NULL in case of error or if there is no
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* such body. the returned string should *not* be modified or freed.
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* The returned data is in UTF8 or NULL.
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*/
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const char* mu_msg_get_body_text (MuMsg *msg, MuMsgOptions opts);
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/**
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* get the html body of this message
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*
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* @param msg a valid MuMsg* instance
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* @param opts options for getting the body
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*
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* @return the html body or NULL in case of error or if there is no
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* such body. the returned string should *not* be modified or freed.
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*/
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const char* mu_msg_get_body_html (MuMsg *msgMu, MuMsgOptions opts);
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/**
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* get the sender (From:) of this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the sender of this Message or NULL in case of error or if there
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* is no sender. the returned string should *not* be modified or freed.
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*/
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const char* mu_msg_get_from (MuMsg *msg);
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/**
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* get the recipients (To:) of this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the sender of this Message or NULL in case of error or if there
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* are no recipients. the returned string should *not* be modified or freed.
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*/
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const char* mu_msg_get_to (MuMsg *msg);
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/**
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* get the carbon-copy recipients (Cc:) of this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the Cc: recipients of this Message or NULL in case of error or if
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* there are no such recipients. the returned string should *not* be modified
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* or freed.
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*/
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const char* mu_msg_get_cc (MuMsg *msg);
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/**
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* get the blind carbon-copy recipients (Bcc:) of this message; this
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* field usually only appears in outgoing messages
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the Bcc: recipients of this Message or NULL in case of
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* error or if there are no such recipients. the returned string
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* should *not* be modified or freed.
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*/
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const char* mu_msg_get_bcc (MuMsg *msg);
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/**
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* get the file system path of this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the path of this Message or NULL in case of error.
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* the returned string should *not* be modified or freed.
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*/
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const char* mu_msg_get_path (MuMsg *msg);
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/**
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* get the maildir this message lives in; ie, if the path is
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* ~/Maildir/foo/bar/cur/msg, the maildir would be foo/bar
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the maildir requested or NULL in case of error. The returned
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* string should *not* be modified or freed.
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*/
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const char* mu_msg_get_maildir (MuMsg *msg);
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/**
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* get the subject of this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the subject of this Message or NULL in case of error or if there
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* is no subject. the returned string should *not* be modified or freed.
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*/
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const char* mu_msg_get_subject (MuMsg *msg);
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/**
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* get the Message-Id of this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the Message-Id of this message (without the enclosing <>),
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* or a fake message-id for messages that don't have them, or NULL in
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* case of error.
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*/
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const char* mu_msg_get_msgid (MuMsg *msg);
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/**
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* get the mailing list for a message, i.e. the mailing-list
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* identifier in the List-Id header.
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the mailing list id for this message (without the enclosing <>)
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* or NULL in case of error or if there is none. the returned string
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* should *not* be modified or freed.
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*/
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const char* mu_msg_get_mailing_list (MuMsg *msg);
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/**
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* get any arbitrary header from this message
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*
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* @param msg a valid MuMsg* instance
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* @header the header requested
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*
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* @return the header requested or NULL in case of error or if there
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* is no such header. the returned string should *not* be modified or freed.
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*/
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const char* mu_msg_get_header (MuMsg *msg,
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const char* header);
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/**
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* get the message date/time (the Date: field) as time_t, using UTC
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*
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* @param msg a valid MuMsg* instance
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*
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* @return message date/time or 0 in case of error or if there
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* is no such header.
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*/
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time_t mu_msg_get_date (MuMsg *msg);
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/**
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* get the flags for this message
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*
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* @param msg valid MuMsg* instance
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*
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* @return the file/content flags as logically OR'd #MuMsgFlags or 0
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* if there are none. Non-standard flags are ignored.
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*/
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MuFlags mu_msg_get_flags (MuMsg *msg);
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/**
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* get the file size in bytes of this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the filesize
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*/
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size_t mu_msg_get_size (MuMsg *msg);
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/**
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* get some field value as string
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*
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* @param msg a valid MuMsg instance
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* @param field the field to retrieve; it must be a string-typed field
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*
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* @return a string that should not be freed
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*/
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const char* mu_msg_get_field_string (MuMsg *msg, MuMsgFieldId mfid);
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/**
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* get some field value as string-list
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*
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* @param msg a valid MuMsg instance
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* @param field the field to retrieve; it must be a string-list-typed field
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*
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* @return a list that should not be freed
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*/
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const GSList* mu_msg_get_field_string_list (MuMsg *self, MuMsgFieldId mfid);
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/**
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* get some field value as string
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*
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* @param msg a valid MuMsg instance
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* @param field the field to retrieve; it must be a numeric field
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*
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* @return a string that should not be freed
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*/
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gint64 mu_msg_get_field_numeric (MuMsg *msg, MuMsgFieldId mfid);
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/**
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* get the message priority for this message (MU_MSG_PRIO_LOW,
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* MU_MSG_PRIO_NORMAL or MU_MSG_PRIO_HIGH) the X-Priority,
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* X-MSMailPriority, Importance and Precedence header are checked, in
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* that order. if no known or explicit priority is set,
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* MU_MSG_PRIO_NORMAL is assumed
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the message priority (!= 0) or 0 in case of error
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*/
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MuMsgPrio mu_msg_get_prio (MuMsg *msg);
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/**
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* get the timestamp (mtime) for the file containing this message
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*
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* @param msg a valid MuMsg* instance
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*
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* @return the timestamp or 0 in case of error
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*/
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time_t mu_msg_get_timestamp (MuMsg *msg);
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/**
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* get a specific header from the message. This value will _not_ be
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* cached
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*
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* @param self a MuMsg instance
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* @param header a specific header (like 'X-Mailer' or 'Organization')
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*
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* @return a header string which is valid as long as this MuMsg is
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*/
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const char* mu_msg_get_header (MuMsg *self, const char *header);
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/**
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* get the list of references (consisting of both the References and
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* In-Reply-To fields), with the oldest first and the direct parent as
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* the last one. Note, any reference (message-id) will appear at most
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* once, duplicates are filtered out.
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*
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* @param msg a valid MuMsg
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*
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* @return a list with the references for this msg. Don't modify/free
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*/
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const GSList* mu_msg_get_references (MuMsg *msg);
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/**
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* get the list of tags (ie., X-Label)
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*
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* @param msg a valid MuMsg
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*
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* @return a list with the tags for this msg. Don't modify/free
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*/
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const GSList* mu_msg_get_tags (MuMsg *self);
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/**
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* compare two messages for sorting
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*
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* @param m1 a message
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* @param m2 another message
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* @param mfid the message to use for the comparison
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*
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* @return negative if m1 is smaller, positive if m1 is smaller, 0 if
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* they are equal
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*/
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int mu_msg_cmp (MuMsg *m1, MuMsg *m2, MuMsgFieldId mfid);
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/**
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* check whether there there's a readable file behind this message
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*
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* @param self a MuMsg*
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*
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* @return TRUE if the message file is readable, FALSE otherwise
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*/
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gboolean mu_msg_is_readable (MuMsg *self);
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struct _MuMsgIterThreadInfo;
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/**
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* convert the msg to a Lisp symbolic expression (for further processing in
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* e.g. emacs)
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*
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* @param msg a valid message
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* @param docid the docid for this message, or 0
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* @param ti thread info for the current message, or NULL
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* @param opts, bitwise OR'ed;
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* - MU_MSG_OPTION_HEADERS_ONLY: only include message fields which can be
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* obtained from the database (this is much faster if the MuMsg is
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* database-backed, so no file needs to be opened)
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* - MU_MSG_OPTION_EXTRACT_IMAGES: extract image attachments as temporary
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* files and include links to those in the sexp
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* and for message parts:
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* MU_MSG_OPTION_CHECK_SIGNATURES: check signatures
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* MU_MSG_OPTION_AUTO_RETRIEVE_KEY: attempt to retrieve keys online
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* MU_MSG_OPTION_USE_AGENT: attempt to use GPG-agent
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* MU_MSG_OPTION_USE_PKCS7: attempt to use PKCS (instead of gpg)
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*
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* @return a string with the sexp (free with g_free) or NULL in case of error
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*/
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char* mu_msg_to_sexp (MuMsg *msg, unsigned docid,
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const struct _MuMsgIterThreadInfo *ti,
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MuMsgOptions ops)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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/**
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* move a message to another maildir; note that this does _not_ update
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* the database
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*
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* @param msg a message with an existing file system path in an actual
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* maildir
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* @param maildir the subdir where the message should go, relative to
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* rootmaildir. e.g. "/archive"
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* @param flags to set for the target (influences the filename, path)
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* @param silently ignore the src=target case (return TRUE)
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* @param new_name whether to create a new unique name, or keep the
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* old one
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* @param err (may be NULL) may contain error information; note if the
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* function return FALSE, err is not set for all error condition
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* (ie. not for parameter error
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*
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* @return TRUE if it worked, FALSE otherwise
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*/
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gboolean mu_msg_move_to_maildir (MuMsg *msg, const char *maildir,
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MuFlags flags, gboolean ignore_dups,
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gboolean new_name,
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GError **err);
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enum _MuMsgContactType { /* Reply-To:? */
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MU_MSG_CONTACT_TYPE_TO = 0,
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MU_MSG_CONTACT_TYPE_FROM,
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MU_MSG_CONTACT_TYPE_CC,
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MU_MSG_CONTACT_TYPE_BCC,
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MU_MSG_CONTACT_TYPE_REPLY_TO,
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MU_MSG_CONTACT_TYPE_NUM
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};
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typedef guint MuMsgContactType;
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/* not a 'real' contact type */
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#define MU_MSG_CONTACT_TYPE_ALL (MU_MSG_CONTACT_TYPE_NUM + 1)
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#define mu_msg_contact_type_is_valid(MCT)\
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((MCT) < MU_MSG_CONTACT_TYPE_NUM)
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struct _MuMsgContact {
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const char *name; /* Foo Bar */
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const char *address; /* foo@bar.cuux */
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MuMsgContactType type; /* MU_MSG_CONTACT_TYPE_{ TO,
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* CC, BCC, FROM, REPLY_TO} */
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};
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typedef struct _MuMsgContact MuMsgContact;
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/**
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* macro to get the name of a contact
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*
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* @param ct a MuMsgContact
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*
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* @return the name
|
|
*/
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|
#define mu_msg_contact_name(ct) ((ct)->name)
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|
|
|
/**
|
|
* macro to get the address of a contact
|
|
*
|
|
* @param ct a MuMsgContact
|
|
*
|
|
* @return the address
|
|
*/
|
|
#define mu_msg_contact_address(ct) ((ct)->address)
|
|
|
|
/**
|
|
* macro to get the contact type
|
|
*
|
|
* @param ct a MuMsgContact
|
|
*
|
|
* @return the contact type
|
|
*/
|
|
#define mu_msg_contact_type(ct) ((ct)->type)
|
|
|
|
|
|
/**
|
|
* callback function
|
|
*
|
|
* @param contact
|
|
* @param user_data a user provided data pointer
|
|
*
|
|
* @return TRUE if we should continue the foreach, FALSE otherwise
|
|
*/
|
|
typedef gboolean (*MuMsgContactForeachFunc) (MuMsgContact* contact,
|
|
gpointer user_data);
|
|
|
|
/**
|
|
* call a function for each of the contacts in a message; the order is:
|
|
* from to cc bcc (of each there are zero or more)
|
|
*
|
|
* @param msg a valid MuMsgGMime* instance
|
|
* @param func a callback function to call for each contact; when
|
|
* the callback does not return TRUE, it won't be called again
|
|
* @param user_data a user-provide pointer that will be passed to the callback
|
|
*
|
|
*/
|
|
void mu_msg_contact_foreach (MuMsg *msg, MuMsgContactForeachFunc func,
|
|
gpointer user_data);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /*__MU_MSG_H__*/
|