* refactoring: split src/ into mu/ and lib/
This commit is contained in:
djcb
696
lib/mu-msg-part.c
Normal file
696
lib/mu-msg-part.c
Normal file
@ -0,0 +1,696 @@
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/* -*-mode: c; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-*/
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/*
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** Copyright (C) 2008-2011 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 it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** 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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#if HAVE_CONFIG_H
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#include "config.h"
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#endif /*HAVE_CONFIG_H*/
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#include <string.h>
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#include <unistd.h>
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#include "mu-util.h"
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#include "mu-str.h"
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#include "mu-msg-priv.h"
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#include "mu-msg-part.h"
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struct _FindPartData {
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guint idx, wanted_idx;
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GMimeObject *part;
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};
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typedef struct _FindPartData FindPartData;
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/* is this either a leaf part or an embedded message? */
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static gboolean
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is_part_or_message_part (GMimeObject *part)
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{
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return GMIME_IS_PART(part) || GMIME_IS_MESSAGE_PART (part);
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}
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static void
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find_part_cb (GMimeObject *parent, GMimeObject *part, FindPartData *fpdata)
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{
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/* ignore other parts */
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if (!is_part_or_message_part (part))
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return;
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/* g_printerr ("%u Type-name: %s\n", */
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/* fpdata->idx, G_OBJECT_TYPE_NAME((GObject*)part)); */
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if (fpdata->part || fpdata->wanted_idx != fpdata->idx++)
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return; /* not yet found */
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fpdata->part = part;
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}
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static GMimeObject*
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find_part (MuMsg* msg, guint partidx)
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{
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FindPartData fpdata;
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fpdata.wanted_idx = partidx;
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fpdata.idx = 0;
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fpdata.part = NULL;
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g_mime_message_foreach (msg->_file->_mime_msg,
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(GMimeObjectForeachFunc)find_part_cb,
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&fpdata);
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return fpdata.part;
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}
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struct _PartData {
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MuMsg *_msg;
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unsigned _idx;
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MuMsgPartForeachFunc _func;
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gpointer _user_data;
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GMimePart *_body_part;
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gboolean _recurse_rfc822;
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};
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typedef struct _PartData PartData;
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char*
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mu_msg_part_get_text (MuMsgPart *self, gboolean *err)
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{
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GMimeObject *mobj;
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g_return_val_if_fail (self && self->data, NULL);
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mobj = (GMimeObject*)self->data;
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if (GMIME_IS_PART(mobj))
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return mu_msg_mime_part_to_string ((GMimePart*)mobj, err);
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else if (GMIME_IS_MESSAGE(mobj)) {
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/* when it's an (embedded) message, the text is just
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* of the message metadata, so we can index it.
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*/
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GString *data;
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GMimeMessage *msg;
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InternetAddressList *addresses;
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gchar *adrs;
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msg = (GMimeMessage*)mobj;
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data = g_string_sized_new (512); /* just a guess */
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g_string_append (data, g_mime_message_get_sender(msg));
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g_string_append_c (data, '\n');
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g_string_append (data, g_mime_message_get_subject(msg));
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g_string_append_c (data, '\n');
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addresses = g_mime_message_get_all_recipients (msg);
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adrs = internet_address_list_to_string (addresses, FALSE);
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g_object_unref(G_OBJECT(addresses));
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g_string_append (data, adrs);
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g_free (adrs);
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return g_string_free (data, FALSE);
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} else
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return NULL;
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}
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/* note: this will return -1 in case of error or if the size is
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* unknown */
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static ssize_t
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get_part_size (GMimePart *part)
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{
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GMimeDataWrapper *wrapper;
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GMimeStream *stream;
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wrapper = g_mime_part_get_content_object (part);
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if (!wrapper)
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return -1;
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stream = g_mime_data_wrapper_get_stream (wrapper);
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if (!stream)
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return -1; /* no stream -> size is 0 */
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else
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return g_mime_stream_length (stream);
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/* NOTE: it seems we shouldn't unref stream/wrapper */
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}
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static gboolean
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init_msg_part_from_mime_part (GMimePart *part, MuMsgPart *pi)
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{
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const gchar *fname, *descr;
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GMimeContentType *ct;
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ct = g_mime_object_get_content_type ((GMimeObject*)part);
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if (GMIME_IS_CONTENT_TYPE(ct)) {
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pi->type = (char*)g_mime_content_type_get_media_type (ct);
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pi->subtype = (char*)g_mime_content_type_get_media_subtype (ct);
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}
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pi->disposition = (char*)g_mime_object_get_disposition
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((GMimeObject*)part);
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fname = g_mime_part_get_filename (part);
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pi->file_name = fname ? mu_str_utf8ify (fname) : NULL;
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descr = g_mime_part_get_content_description (part);
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pi->description = descr ? mu_str_utf8ify (descr) : NULL;
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pi->size = get_part_size (part);
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pi->is_leaf = TRUE;
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pi->is_msg = FALSE;
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return TRUE;
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}
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static gchar*
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get_filename_for_mime_message_part (GMimeMessage *mmsg)
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{
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gchar *name, *cur;
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name = (char*)g_mime_message_get_subject (mmsg);
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if (!name)
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name = "message";
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name = g_strconcat (name, ".eml", NULL);
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/* remove slashes... */
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for (cur = name ; *cur; ++cur) {
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if (*cur == '/' || *cur == ' ' || *cur == ':')
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*cur = '-';
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}
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return name;
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}
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static gboolean
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init_msg_part_from_mime_message_part (GMimeMessage *mmsg, MuMsgPart *pi)
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{
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pi->disposition = GMIME_DISPOSITION_ATTACHMENT;
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/* pseudo-file name... */
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pi->file_name = get_filename_for_mime_message_part (mmsg);
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pi->description = g_strdup ("message");
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pi->type = "message";
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pi->subtype = "rfc822";
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pi->size = 0;
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pi->is_leaf = TRUE;
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pi->is_msg = TRUE;
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return TRUE;
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}
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static void
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msg_part_free (MuMsgPart *pi)
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{
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if (!pi)
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return;
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g_free (pi->file_name);
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g_free (pi->description);
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}
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static void
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part_foreach_cb (GMimeObject *parent, GMimeObject *mobj, PartData *pdata)
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{
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MuMsgPart pi;
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gboolean rv;
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/* ignore non-leaf / message parts */
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if (!is_part_or_message_part (mobj))
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return;
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memset (&pi, 0, sizeof(pi));
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pi.index = pdata->_idx++;
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pi.content_id = (char*)g_mime_object_get_content_id (mobj);
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pi.data = (gpointer)mobj;
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/* check if this is the body part */
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pi.is_body = ((void*)pdata->_body_part == (void*)mobj);
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if (GMIME_IS_PART(mobj))
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rv = init_msg_part_from_mime_part ((GMimePart*)mobj, &pi);
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else if (GMIME_IS_MESSAGE_PART(mobj)) {
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GMimeMessage *mmsg;
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mmsg = g_mime_message_part_get_message ((GMimeMessagePart*)mobj);
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if (!mmsg)
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return;
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rv = init_msg_part_from_mime_message_part (mmsg, &pi);
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if (rv && pdata->_recurse_rfc822)
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/* NOTE: this screws up the counting (pdata->_idx) */
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g_mime_message_foreach /* recurse */
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(mmsg, (GMimeObjectForeachFunc)part_foreach_cb,
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pdata);
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} else
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rv = FALSE; /* ignore */
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if (rv)
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pdata->_func(pdata->_msg, &pi, pdata->_user_data);
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msg_part_free (&pi);
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}
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static gboolean
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load_msg_file_maybe (MuMsg *msg)
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{
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GError *err;
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if (msg->_file)
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return TRUE;
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err = NULL;
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msg->_file = mu_msg_file_new (mu_msg_get_path(msg), NULL,
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&err);
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if (!msg->_file) {
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MU_HANDLE_G_ERROR(err); /* will free it */
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return FALSE;
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}
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if (!msg->_file->_mime_msg) {
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mu_msg_file_destroy (msg->_file);
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msg->_file = NULL;
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g_warning ("failed to create mime-msg");
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return FALSE;
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}
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return TRUE;
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}
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void
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mu_msg_part_foreach (MuMsg *msg, gboolean recurse_rfc822,
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MuMsgPartForeachFunc func, gpointer user_data)
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{
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PartData pdata;
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GMimeMessage *mime_msg;
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g_return_if_fail (msg);
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if (!load_msg_file_maybe (msg))
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return;
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mime_msg = msg->_file->_mime_msg;
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pdata._msg = msg;
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pdata._idx = 0;
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pdata._body_part = mu_msg_mime_get_body_part (mime_msg, FALSE);
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pdata._func = func;
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pdata._user_data = user_data;
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pdata._recurse_rfc822 = recurse_rfc822;
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g_mime_message_foreach (msg->_file->_mime_msg,
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(GMimeObjectForeachFunc)part_foreach_cb,
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&pdata);
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}
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static gboolean
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write_part_to_fd (GMimePart *part, int fd, GError **err)
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{
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GMimeStream *stream;
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GMimeDataWrapper *wrapper;
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gboolean rv;
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stream = g_mime_stream_fs_new (fd);
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if (!GMIME_IS_STREAM(stream)) {
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME,
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"failed to create stream");
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return FALSE;
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}
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g_mime_stream_fs_set_owner (GMIME_STREAM_FS(stream), FALSE);
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wrapper = g_mime_part_get_content_object (part);
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if (!GMIME_IS_DATA_WRAPPER(wrapper)) {
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME,
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"failed to create wrapper");
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g_object_unref (stream);
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return FALSE;
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}
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g_object_ref (part); /* FIXME: otherwise, the unrefs below
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* give errors...*/
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if (g_mime_data_wrapper_write_to_stream (wrapper, stream) == -1) {
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rv = FALSE;
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME,
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"failed to write to stream");
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} else
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rv = TRUE;
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g_object_unref (wrapper);
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g_object_unref (stream);
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return rv;
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}
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static gboolean
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write_object_to_fd (GMimeObject *obj, int fd, GError **err)
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{
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gchar *str;
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str = g_mime_object_to_string (obj);
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if (!str) {
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME,
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"could not get string from object");
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return FALSE;
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}
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if (write (fd, str, strlen(str)) == -1) {
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME,
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"failed to write object: %s",
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strerror(errno));
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return FALSE;
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}
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return TRUE;
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}
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static gboolean
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save_mime_object (GMimeObject *obj, const char *fullpath,
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gboolean overwrite, gboolean use_existing, GError **err)
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{
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int fd;
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gboolean rv;
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/* don't try to overwrite when we already have it; useful when
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* you're sure it's not a different file with the same name */
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if (use_existing && access (fullpath, F_OK) == 0)
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return TRUE;
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/* ok, try to create the file */
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fd = mu_util_create_writeable_fd (fullpath, 0600, overwrite);
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if (fd == -1) {
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_FILE,
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"could not open '%s' for writing: %s",
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fullpath, errno ? strerror(errno) : "error");
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return FALSE;
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}
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if (GMIME_IS_PART (obj))
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rv = write_part_to_fd ((GMimePart*)obj, fd, err);
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else
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rv = write_object_to_fd (obj, fd, err);
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if (close (fd) != 0 && !err) { /* don't write on top of old err */
|
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_FILE,
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"could not close '%s': %s",
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fullpath, errno ? strerror(errno) : "error");
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return FALSE;
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
gchar*
|
||||
mu_msg_part_filepath (MuMsg *msg, const char* targetdir, guint partidx,
|
||||
GError **err)
|
||||
{
|
||||
char *fname, *filepath;
|
||||
GMimeObject* mobj;
|
||||
|
||||
if (!load_msg_file_maybe (msg))
|
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return NULL;
|
||||
|
||||
if (!(mobj = find_part (msg, partidx))) {
|
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g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME, "cannot find part %u", partidx);
|
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return NULL;
|
||||
}
|
||||
|
||||
if (GMIME_IS_PART (mobj)) {
|
||||
/* the easy case: the part has a filename */
|
||||
fname = (gchar*)g_mime_part_get_filename (GMIME_PART(mobj));
|
||||
if (fname) /* security: don't include any directory components... */
|
||||
fname = g_path_get_basename (fname);
|
||||
else
|
||||
fname = g_strdup_printf ("%x-part-%u",
|
||||
g_str_hash (mu_msg_get_path (msg)),
|
||||
partidx);
|
||||
} else if (GMIME_IS_MESSAGE_PART(mobj))
|
||||
fname = get_filename_for_mime_message_part
|
||||
(g_mime_message_part_get_message((GMimeMessagePart*)mobj));
|
||||
else {
|
||||
g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME, "part %u cannot be saved",
|
||||
partidx);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
filepath = g_build_path (G_DIR_SEPARATOR_S, targetdir ? targetdir : "",
|
||||
fname, NULL);
|
||||
g_free (fname);
|
||||
|
||||
return filepath;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
gchar*
|
||||
mu_msg_part_filepath_cache (MuMsg *msg, guint partid)
|
||||
{
|
||||
char *dirname, *filepath;
|
||||
const char* path;
|
||||
|
||||
g_return_val_if_fail (msg, NULL);
|
||||
|
||||
if (!load_msg_file_maybe (msg))
|
||||
return NULL;
|
||||
|
||||
path = mu_msg_get_path (msg);
|
||||
if (!path)
|
||||
return NULL;
|
||||
|
||||
/* g_compute_checksum_for_string may be better, but requires
|
||||
* rel. new glib (2.16) */
|
||||
dirname = g_strdup_printf ("%s%c%x%c%u",
|
||||
mu_util_cache_dir(), G_DIR_SEPARATOR,
|
||||
g_str_hash (path), G_DIR_SEPARATOR,
|
||||
partid);
|
||||
|
||||
if (!mu_util_create_dir_maybe (dirname, 0700, FALSE)) {
|
||||
g_free (dirname);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
filepath = mu_msg_part_filepath (msg, dirname, partid, NULL);
|
||||
g_free (dirname);
|
||||
if (!filepath)
|
||||
g_warning ("%s: could not get filename", __FUNCTION__);
|
||||
|
||||
return filepath;
|
||||
}
|
||||
|
||||
|
||||
gboolean
|
||||
mu_msg_part_save (MuMsg *msg, const char *fullpath, guint partidx,
|
||||
gboolean overwrite, gboolean use_cached, GError **err)
|
||||
{
|
||||
GMimeObject *part;
|
||||
|
||||
g_return_val_if_fail (msg, FALSE);
|
||||
g_return_val_if_fail (fullpath, FALSE);
|
||||
g_return_val_if_fail (!overwrite||!use_cached, FALSE);
|
||||
|
||||
if (!load_msg_file_maybe (msg))
|
||||
return FALSE;
|
||||
|
||||
part = find_part (msg, partidx);
|
||||
if (!is_part_or_message_part (part)) {
|
||||
g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_GMIME,
|
||||
"unexpected type %s for part %u",
|
||||
G_OBJECT_TYPE_NAME((GObject*)part),
|
||||
partidx);
|
||||
return FALSE;
|
||||
} else
|
||||
return save_mime_object (part, fullpath, overwrite, use_cached, err);
|
||||
|
||||
}
|
||||
|
||||
|
||||
gchar*
|
||||
mu_msg_part_save_temp (MuMsg *msg, guint partidx, GError **err)
|
||||
{
|
||||
gchar *filepath;
|
||||
gboolean rv;
|
||||
|
||||
filepath = mu_msg_part_filepath_cache (msg, partidx);
|
||||
if (!filepath) {
|
||||
g_set_error (err, MU_ERROR_DOMAIN, MU_ERROR_FILE,
|
||||
"Could not get temp filepath");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
rv = mu_msg_part_save (msg, filepath, partidx, FALSE, TRUE, err);
|
||||
if (!rv) {
|
||||
g_free (filepath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return filepath;
|
||||
}
|
||||
|
||||
|
||||
|
||||
typedef gboolean (*MatchFunc) (GMimeObject *part, gpointer data);
|
||||
|
||||
struct _MatchData {
|
||||
MatchFunc _matcher;
|
||||
gpointer _user_data;
|
||||
gint _idx, _found_idx;
|
||||
};
|
||||
typedef struct _MatchData MatchData;
|
||||
|
||||
static void
|
||||
part_match_foreach_cb (GMimeObject *parent, GMimeObject *part, MatchData *mdata)
|
||||
{
|
||||
if (mdata->_found_idx < 0)
|
||||
if (mdata->_matcher (part, mdata->_user_data))
|
||||
mdata->_found_idx = mdata->_idx;
|
||||
|
||||
++mdata->_idx;
|
||||
}
|
||||
|
||||
static int
|
||||
msg_part_find_idx (GMimeMessage *msg, MatchFunc func, gpointer user_data)
|
||||
{
|
||||
MatchData mdata;
|
||||
|
||||
g_return_val_if_fail (msg, -1);
|
||||
g_return_val_if_fail (GMIME_IS_MESSAGE(msg), -1);
|
||||
|
||||
mdata._idx = 0;
|
||||
mdata._found_idx = -1;
|
||||
mdata._matcher = func;
|
||||
mdata._user_data = user_data;
|
||||
|
||||
g_mime_message_foreach (msg,
|
||||
(GMimeObjectForeachFunc)part_match_foreach_cb,
|
||||
&mdata);
|
||||
|
||||
return mdata._found_idx;
|
||||
}
|
||||
|
||||
|
||||
static gboolean
|
||||
match_content_id (GMimeObject *part, const char *cid)
|
||||
{
|
||||
return g_strcmp0 (g_mime_object_get_content_id (part),
|
||||
cid) == 0 ? TRUE : FALSE;
|
||||
}
|
||||
|
||||
int
|
||||
mu_msg_part_find_cid (MuMsg *msg, const char* sought_cid)
|
||||
{
|
||||
const char* cid;
|
||||
|
||||
g_return_val_if_fail (msg, -1);
|
||||
g_return_val_if_fail (sought_cid, -1);
|
||||
|
||||
if (!load_msg_file_maybe (msg))
|
||||
return -1;
|
||||
|
||||
cid = g_str_has_prefix (sought_cid, "cid:") ?
|
||||
sought_cid + 4 : sought_cid;
|
||||
|
||||
return msg_part_find_idx (msg->_file->_mime_msg,
|
||||
(MatchFunc)match_content_id,
|
||||
(gpointer)(char*)cid);
|
||||
}
|
||||
|
||||
struct _MatchData2 {
|
||||
GSList *_lst;
|
||||
const GRegex *_rx;
|
||||
guint _idx;
|
||||
};
|
||||
typedef struct _MatchData2 MatchData2;
|
||||
|
||||
|
||||
static void
|
||||
match_filename_rx (GMimeObject *parent, GMimeObject *part, MatchData2 *mdata)
|
||||
{
|
||||
const char *fname;
|
||||
|
||||
/* ignore other parts -- we need this guard so the counting of
|
||||
* parts is the same as in other functions for dealing with
|
||||
* msg parts (this is needed since we expose the numbers to
|
||||
* the user) */
|
||||
if (!is_part_or_message_part (part))
|
||||
return;
|
||||
|
||||
fname = g_mime_part_get_filename (GMIME_PART(part));
|
||||
if (!fname) {
|
||||
++mdata->_idx;
|
||||
return;
|
||||
}
|
||||
|
||||
if (g_regex_match (mdata->_rx, fname, 0, NULL))
|
||||
mdata->_lst = g_slist_prepend (mdata->_lst,
|
||||
GUINT_TO_POINTER(mdata->_idx++));
|
||||
}
|
||||
|
||||
|
||||
GSList*
|
||||
mu_msg_part_find_files (MuMsg *msg, const GRegex *pattern)
|
||||
{
|
||||
MatchData2 mdata;
|
||||
|
||||
g_return_val_if_fail (msg, NULL);
|
||||
g_return_val_if_fail (pattern, NULL);
|
||||
|
||||
if (!load_msg_file_maybe (msg))
|
||||
return NULL;
|
||||
|
||||
mdata._lst = NULL;
|
||||
mdata._rx = pattern;
|
||||
mdata._idx = 0;
|
||||
|
||||
g_mime_message_foreach (msg->_file->_mime_msg,
|
||||
(GMimeObjectForeachFunc)match_filename_rx,
|
||||
&mdata);
|
||||
return mdata._lst;
|
||||
}
|
||||
|
||||
|
||||
gboolean
|
||||
mu_msg_part_looks_like_attachment (MuMsgPart *part, gboolean include_inline)
|
||||
{
|
||||
g_return_val_if_fail (part, FALSE);
|
||||
|
||||
if (part->is_body||!part->disposition||!part->type)
|
||||
return FALSE;
|
||||
|
||||
if (include_inline ||
|
||||
g_ascii_strcasecmp (part->disposition,
|
||||
GMIME_DISPOSITION_ATTACHMENT) == 0)
|
||||
return TRUE;
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
Reference in New Issue
Block a user