Introduce a BlobObject type for blobs

This creates a specific type for blobs, with well defined conversions
at the borders.  It also introduces a strong type for the Param::File
value since that param is often used used by the public API to set
filenames using absolute paths, but then core changes the param to a
blob before it gets to the database.

This eliminates a few more functions with very mallable C-like
arguments behaviour which combine a number of operations in one.
Because blob filenames are stored so often in arbitrary strings this
does add more code when receiving those, until the storage is fixed.

File name sanitisation is now deletated to the sanitize-filename crate
which should do a slightly better job at this.
This commit is contained in:
Floris Bruynooghe
2019-10-18 00:19:49 +02:00
committed by holger krekel
parent f0fc50d5a9
commit 6c9e16d31a
16 changed files with 909 additions and 316 deletions

View File

@@ -1,4 +1,3 @@
use std::path::Path;
use std::ptr;
use chrono::TimeZone;
@@ -12,6 +11,7 @@ use mmime::mailmime::write_mem::*;
use mmime::mmapstring::*;
use mmime::other::*;
use crate::blob::BlobObject;
use crate::chat::{self, Chat};
use crate::config::Config;
use crate::constants::*;
@@ -794,26 +794,26 @@ fn build_body_file(
msg: &Message,
base_name: &str,
) -> Result<(*mut Mailmime, String), Error> {
let path_filename = match msg.param.get(Param::File) {
None => {
bail!("msg has no filename");
}
Some(path) => path,
let param = msg
.param
.get(Param::File)
.ok_or_else(|| format_err!("msg has no filename"))?;
let file = ParamsFile::from_param(context, param)?;
let blob = match file {
ParamsFile::FsPath(path) => BlobObject::create_from_path(context, path)?,
ParamsFile::Blob(blob) => blob,
};
let suffix = dc_get_filesuffix_lc(path_filename).unwrap_or_else(|| "dat".into());
let suffix = blob.suffix().unwrap_or("dat");
/* get file name to use for sending
(for privacy purposes, we do not transfer the original filenames eg. for images;
these names are normally not needed and contain timestamps, running numbers etc.) */
let filename_to_send = match msg.type_0 {
// Get file name to use for sending. For privacy purposes, we do
// not transfer the original filenames eg. for images; these names
// are normally not needed and contain timestamps, running numbers
// etc.
let filename_to_send: String = match msg.type_0 {
Viewtype::Voice => chrono::Utc
.timestamp(msg.timestamp_sort as i64, 0)
.format(&format!("voice-message_%Y-%m-%d_%H-%M-%S.{}", suffix))
.format(&format!("voice-message_%Y-%m-%d_%H-%M-%S.{}", &suffix))
.to_string(),
Viewtype::Audio => Path::new(path_filename)
.file_name()
.map(|c| c.to_string_lossy().to_string())
.unwrap_or_default(),
Viewtype::Image | Viewtype::Gif => format!(
"{}.{}",
if base_name.is_empty() {
@@ -824,18 +824,14 @@ fn build_body_file(
&suffix,
),
Viewtype::Video => format!("video.{}", &suffix),
_ => Path::new(path_filename)
.file_name()
.map(|c| c.to_string_lossy().to_string())
.unwrap_or_default(),
_ => blob.as_file_name().to_string(),
};
/* check mimetype */
let mimetype = match msg.param.get(Param::MimeType) {
Some(mtype) => mtype,
None => {
let path = Path::new(path_filename);
if let Some(res) = message::guess_msgtype_from_suffix(&path) {
if let Some(res) = message::guess_msgtype_from_suffix(blob.as_rel_path()) {
res.1
} else {
"application/octet-stream"
@@ -895,7 +891,7 @@ fn build_body_file(
wrapmime::append_ct_param(content, "name", &filename_encoded)?;
let mime_sub = mailmime_new_empty(content, mime_fields);
let abs_path = dc_get_abs_path(context, path_filename).to_c_string()?;
let abs_path = blob.to_abs_path().to_c_string()?;
mailmime_set_body_file(mime_sub, dc_strdup(abs_path.as_ptr()));
Ok((mime_sub, filename_to_send))
}
@@ -912,13 +908,18 @@ pub(crate) fn vec_contains_lowercase(vec: &[String], part: &str) -> bool {
}
fn is_file_size_okay(context: &Context, msg: &Message) -> bool {
let mut file_size_okay = true;
let path = msg.param.get(Param::File).unwrap_or_default();
let bytes = dc_get_filebytes(context, &path);
if bytes > (49 * 1024 * 1024 / 4 * 3) {
file_size_okay = false;
match msg
.param
.get(Param::File)
.and_then(|param| ParamsFile::from_param(context, param).ok())
.map(|file| match file {
ParamsFile::FsPath(path) => path,
ParamsFile::Blob(blob) => blob.to_abs_path(),
}) {
Some(path) => {
let bytes = dc_get_filebytes(context, &path);
bytes <= (49 * 1024 * 1024 / 4 * 3)
}
None => false,
}
file_size_okay
}