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Make input length checks consistent with HTML maxlength attribute (#4009)

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* Make input length checks consistent with HTML maxlength attr (fixes #3688)

* ci

* Extricating min and max length checks (#4018)

* revert string change

---------

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>
This commit is contained in:
Nutomic 2023-10-05 22:39:07 +02:00 committed by GitHub
parent a5b8583aab
commit b7d570cf35
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1 changed files with 19 additions and 27 deletions
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44
crates/utils/src/utils/validation.rs
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@ -130,21 +130,14 @@ pub fn is_valid_post_title(title: &str) -> LemmyResult<()> {
/// This could be post bodies, comments, or any description field
pub fn is_valid_body_field(body: &Option<String>, post: bool) -> LemmyResult<()> {
if let Some(body) = body {
let check = if post {
body.chars().count() <= POST_BODY_MAX_LENGTH
if post {
max_length_check(body, POST_BODY_MAX_LENGTH, LemmyErrorType::InvalidBodyField)?;
} else {
body.chars().count() <= BODY_MAX_LENGTH
max_length_check(body, BODY_MAX_LENGTH, LemmyErrorType::InvalidBodyField)?;
};
if !check {
Err(LemmyErrorType::InvalidBodyField.into())
} else {
Ok(())
}
} else {
Ok(())
}
}
pub fn is_valid_bio_field(bio: &str) -> LemmyResult<()> {
max_length_check(bio, BIO_MAX_LENGTH, LemmyErrorType::BioLengthOverflow)
@ -152,11 +145,10 @@ pub fn is_valid_bio_field(bio: &str) -> LemmyResult<()> {
/// Checks the site name length, the limit as defined in the DB.
pub fn site_name_length_check(name: &str) -> LemmyResult<()> {
min_max_length_check(
min_length_check(name, SITE_NAME_MIN_LENGTH, LemmyErrorType::SiteNameRequired)?;
max_length_check(
name,
SITE_NAME_MIN_LENGTH,
SITE_NAME_MAX_LENGTH,
LemmyErrorType::SiteNameRequired,
LemmyErrorType::SiteNameLengthOverflow,
)
}
@ -170,24 +162,24 @@ pub fn site_description_length_check(description: &str) -> LemmyResult<()> {
)
}
fn max_length_check(item: &str, max_length: usize, error_type: LemmyErrorType) -> LemmyResult<()> {
if item.len() > max_length {
Err(error_type.into())
/// Check minumum and maximum length of input string. If the string is too short or too long, the
/// corresponding error is returned.
///
/// HTML frontends specify maximum input length using `maxlength` attribute.
/// For consistency we use the same counting method (UTF-16 code units).
/// https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/maxlength
fn max_length_check(item: &str, max_length: usize, max_msg: LemmyErrorType) -> LemmyResult<()> {
let len = item.encode_utf16().count();
if len > max_length {
Err(max_msg.into())
} else {
Ok(())
}
}
fn min_max_length_check(
item: &str,
min_length: usize,
max_length: usize,
min_msg: LemmyErrorType,
max_msg: LemmyErrorType,
) -> LemmyResult<()> {
if item.len() > max_length {
Err(max_msg.into())
} else if item.len() < min_length {
fn min_length_check(item: &str, min_length: usize, min_msg: LemmyErrorType) -> LemmyResult<()> {
let len = item.encode_utf16().count();
if len < min_length {
Err(min_msg.into())
} else {
Ok(())