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/* Copyright (c) 2010-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "istream.h"
#include "str.h"
#include "dbox-file.h"
#include "dbox-save.h"
#include "dbox-attachment.h"
void dbox_attachment_save_write_metadata(struct mail_save_context *ctx,
string_t *str)
{
const ARRAY_TYPE(mail_attachment_extref) *extrefs;
extrefs = index_attachment_save_get_extrefs(ctx);
if (extrefs == NULL || array_count(extrefs) == 0)
return;
str_append_c(str, DBOX_METADATA_EXT_REF);
index_attachment_append_extrefs(str, extrefs);
str_append_c(str, '\n');
}
static int
dbox_attachment_file_get_stream_from(struct dbox_file *file,
const char *ext_refs,
struct istream **stream,
const char **error_r)
{
const char *path_suffix;
uoff_t msg_size;
if (file->storage->attachment_dir == NULL) {
mail_storage_set_critical(&file->storage->storage,
"%s contains references to external attachments, "
"but mail_attachment_dir is unset", file->cur_path);
return -1;
}
msg_size = dbox_file_get_plaintext_size(file);
path_suffix = file->storage->v.get_attachment_path_suffix(file);
if (index_attachment_stream_get(file->storage->attachment_fs,
file->storage->attachment_dir,
path_suffix, stream, msg_size,
ext_refs, error_r) < 0)
return 0;
return 1;
}
int dbox_attachment_file_get_stream(struct dbox_file *file,
struct istream **stream)
{
const char *ext_refs, *error;
int ret;
/* need to read metadata in case there are external references */
if ((ret = dbox_file_metadata_read(file)) <= 0)
return ret;
i_stream_seek(file->input, file->cur_offset + file->msg_header_size);
ext_refs = dbox_file_metadata_get(file, DBOX_METADATA_EXT_REF);
if (ext_refs == NULL)
return 1;
/* we have external references. */
T_BEGIN {
ret = dbox_attachment_file_get_stream_from(file, ext_refs,
stream, &error);
if (ret == 0) {
dbox_file_set_corrupted(file,
"Corrupted ext-refs metadata %s: %s",
ext_refs, error);
}
} T_END;
return ret;
}
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