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/**
* @file
* Handling of email attachments
*
* @authors
* Copyright (C) 2018-2023 Richard Russon <rich@flatcap.org>
* Copyright (C) 2022 David Purton <dcpurton@marshwiggle.net>
*
* @copyright
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @page attach_attach Email attachments
*
* Handling of email attachments
*/
#include "config.h"
#include <string.h>
#include "mutt/lib.h"
#include "email/lib.h"
#include "attach.h"
/**
* mutt_aptr_new - Create a new Attachment Pointer
* @retval ptr New Attachment Pointer
*/
struct AttachPtr *mutt_aptr_new(void)
{
return MUTT_MEM_CALLOC(1, struct AttachPtr);
}
/**
* mutt_aptr_free - Free an Attachment Pointer
* @param[out] ptr Attachment Pointer
*/
void mutt_aptr_free(struct AttachPtr **ptr)
{
if (!ptr || !*ptr)
return;
struct AttachPtr *aptr = *ptr;
FREE(&aptr->tree);
FREE(ptr);
}
/**
* mutt_actx_add_attach - Add an Attachment to an Attachment Context
* @param actx Attachment context
* @param attach Attachment to add
*/
void mutt_actx_add_attach(struct AttachCtx *actx, struct AttachPtr *attach)
{
const int grow = 5;
if (!actx || !attach)
return;
if (actx->idxlen == actx->idxmax)
{
actx->idxmax += grow;
MUTT_MEM_REALLOC(&actx->idx, actx->idxmax, struct AttachPtr *);
MUTT_MEM_REALLOC(&actx->v2r, actx->idxmax, short);
memset(&actx->idx[actx->idxlen], 0, grow * sizeof(struct AttachPtr *));
memset(&actx->v2r[actx->idxlen], 0, grow * sizeof(short));
}
actx->idx[actx->idxlen++] = attach;
}
/**
* mutt_actx_ins_attach - Insert an Attachment into an Attachment Context at Specified Index
* @param actx Attachment context
* @param attach Attachment to insert
* @param aidx Index to insert attachment at
*/
void mutt_actx_ins_attach(struct AttachCtx *actx, struct AttachPtr *attach, int aidx)
{
if (!actx || !attach)
return;
if ((aidx < 0) || (aidx > actx->idxmax))
return;
if (actx->idxlen == actx->idxmax)
{
actx->idxmax += 5;
MUTT_MEM_REALLOC(&actx->idx, actx->idxmax, struct AttachPtr *);
MUTT_MEM_REALLOC(&actx->v2r, actx->idxmax, short);
for (int i = actx->idxlen; i < actx->idxmax; i++)
actx->idx[i] = NULL;
}
actx->idxlen++;
for (int i = actx->idxlen - 1; i > aidx; i--)
actx->idx[i] = actx->idx[i - 1];
actx->idx[aidx] = attach;
}
/**
* mutt_actx_add_fp - Save a File handle to the Attachment Context
* @param actx Attachment context
* @param fp_new File handle to save
*/
void mutt_actx_add_fp(struct AttachCtx *actx, FILE *fp_new)
{
if (!actx || !fp_new)
return;
if (actx->fp_len == actx->fp_max)
{
actx->fp_max += 5;
MUTT_MEM_REALLOC(&actx->fp_idx, actx->fp_max, FILE *);
for (int i = actx->fp_len; i < actx->fp_max; i++)
actx->fp_idx[i] = NULL;
}
actx->fp_idx[actx->fp_len++] = fp_new;
}
/**
* mutt_actx_add_body - Add an email body to an Attachment Context
* @param actx Attachment context
* @param b Email Body to add
*/
void mutt_actx_add_body(struct AttachCtx *actx, struct Body *b)
{
if (!actx || !b)
return;
if (actx->body_len == actx->body_max)
{
actx->body_max += 5;
MUTT_MEM_REALLOC(&actx->body_idx, actx->body_max, struct Body *);
for (int i = actx->body_len; i < actx->body_max; i++)
actx->body_idx[i] = NULL;
}
actx->body_idx[actx->body_len++] = b;
}
/**
* mutt_actx_entries_free - Free entries in an Attachment Context
* @param actx Attachment context
*/
void mutt_actx_entries_free(struct AttachCtx *actx)
{
if (!actx)
return;
for (int i = 0; i < actx->idxlen; i++)
{
if (actx->idx[i]->body)
actx->idx[i]->body->aptr = NULL;
mutt_aptr_free(&actx->idx[i]);
}
actx->idxlen = 0;
actx->vcount = 0;
for (int i = 0; i < actx->fp_len; i++)
mutt_file_fclose(&actx->fp_idx[i]);
actx->fp_len = 0;
for (int i = 0; i < actx->body_len; i++)
mutt_body_free(&actx->body_idx[i]);
actx->body_len = 0;
}
/**
* mutt_actx_new - Create a new Attachment Context
* @retval ptr New Attachment Context
*/
struct AttachCtx *mutt_actx_new(void)
{
return MUTT_MEM_CALLOC(1, struct AttachCtx);
}
/**
* mutt_actx_free - Free an Attachment Context
* @param[out] ptr Attachment context
*/
void mutt_actx_free(struct AttachCtx **ptr)
{
if (!ptr || !*ptr)
return;
struct AttachCtx *actx = *ptr;
mutt_actx_entries_free(actx);
FREE(&actx->idx);
FREE(&actx->v2r);
FREE(&actx->fp_idx);
FREE(&actx->body_idx);
FREE(ptr);
}
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