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Make dc_mimeparser::reconcat_mime() safe

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This commit is contained in:
Dmitry Bogatov
2019-08-26 23:11:51 +00:00
committed by Floris Bruynooghe
parent 86eb9cc058
commit edb0fa17af
1 changed files with 16 additions and 55 deletions
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71
src/dc_mimeparser.rs
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@@ -843,11 +843,7 @@ unsafe fn mailmime_get_mime_type(
}
}
*msg_type = Viewtype::File;
reconcat_mime(
raw_mime,
b"text\x00" as *const u8 as *const libc::c_char,
(*c).ct_subtype,
);
*raw_mime = reconcat_mime(Some("text"), as_opt_str((*c).ct_subtype)).strdup();
return 110i32;
}
2 => {
@@ -863,38 +859,22 @@ unsafe fn mailmime_get_mime_type(
) == 0i32
{
*msg_type = Viewtype::File;
reconcat_mime(
raw_mime,
b"image\x00" as *const u8 as *const libc::c_char,
(*c).ct_subtype,
);
*raw_mime = reconcat_mime(Some("image"), as_opt_str((*c).ct_subtype)).strdup();
return 110i32;
} else {
*msg_type = Viewtype::Image;
}
reconcat_mime(
raw_mime,
b"image\x00" as *const u8 as *const libc::c_char,
(*c).ct_subtype,
);
*raw_mime = reconcat_mime(Some("image"), as_opt_str((*c).ct_subtype)).strdup();
return 80i32;
}
3 => {
*msg_type = Viewtype::Audio;
reconcat_mime(
raw_mime,
b"audio\x00" as *const u8 as *const libc::c_char,
(*c).ct_subtype,
);
*raw_mime = reconcat_mime(Some("audio"), as_opt_str((*c).ct_subtype)).strdup();
return 90i32;
}
4 => {
*msg_type = Viewtype::Video;
reconcat_mime(
raw_mime,
b"video\x00" as *const u8 as *const libc::c_char,
(*c).ct_subtype,
);
*raw_mime = reconcat_mime(Some("video"), as_opt_str((*c).ct_subtype)).strdup();
return 100i32;
}
_ => {
@@ -906,18 +886,14 @@ unsafe fn mailmime_get_mime_type(
b"autocrypt-setup\x00" as *const u8 as *const libc::c_char,
) == 0i32
{
reconcat_mime(
raw_mime,
b"application\x00" as *const u8 as *const libc::c_char,
(*c).ct_subtype,
);
*raw_mime = reconcat_mime(None, as_opt_str((*c).ct_subtype)).strdup();
return 111i32;
}
reconcat_mime(
raw_mime,
(*(*(*c).ct_type).tp_data.tp_discrete_type).dt_extension,
(*c).ct_subtype,
);
*raw_mime = reconcat_mime(
as_opt_str((*(*(*c).ct_type).tp_data.tp_discrete_type).dt_extension),
as_opt_str((*c).ct_subtype),
)
.strdup();
return 110i32;
}
},
@@ -978,26 +954,11 @@ unsafe fn mailmime_get_mime_type(
0
}
unsafe fn reconcat_mime(
raw_mime: *mut *mut libc::c_char,
type_0: *const libc::c_char,
subtype: *const libc::c_char,
) {
if !raw_mime.is_null() {
*raw_mime = dc_mprintf(
b"%s/%s\x00" as *const u8 as *const libc::c_char,
if !type_0.is_null() {
type_0
} else {
b"application\x00" as *const u8 as *const libc::c_char
},
if !subtype.is_null() {
subtype
} else {
b"octet-stream\x00" as *const u8 as *const libc::c_char
},
)
};
fn reconcat_mime(type_0: Option<&str>, subtype: Option<&str>) -> String {
let type_0 = type_0.unwrap_or("application");
let subtype = subtype.unwrap_or("octet-stream");
format!("{}/{}", type_0, subtype)
}
unsafe fn mailmime_is_attachment_disposition(mime: *mut mailmime) -> libc::c_int {