620 lines
21 KiB
Rust
620 lines
21 KiB
Rust
// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use crate::date::DateTime;
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use crate::hashes::Hash;
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use crate::jingle::{ContentId, Creator};
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use crate::ns;
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use crate::util::error::Error;
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use minidom::{Element, Node};
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use std::collections::BTreeMap;
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use std::convert::TryFrom;
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use std::str::FromStr;
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generate_element!(
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/// Represents a range in a file.
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#[derive(PartialEq, Default)]
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Range, "range", JINGLE_FT,
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attributes: [
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/// The offset in bytes from the beginning of the file.
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offset: Default<u64> = "offset",
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/// The length in bytes of the range, or None to be the entire
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/// remaining of the file.
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length: Option<u64> = "length"
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],
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children: [
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/// List of hashes for this range.
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hashes: Vec<Hash> = ("hash", HASHES) => Hash
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]
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);
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impl Range {
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/// Creates a new range.
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pub fn new() -> Range {
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Default::default()
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}
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}
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type Lang = String;
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generate_id!(
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/// Wrapper for a file description.
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Desc
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);
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/// Represents a file to be transferred.
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#[derive(Debug, Clone, Default)]
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pub struct File {
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/// The date of last modification of this file.
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pub date: Option<DateTime>,
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/// The MIME type of this file.
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pub media_type: Option<String>,
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/// The name of this file.
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pub name: Option<String>,
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/// The description of this file, possibly localised.
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pub descs: BTreeMap<Lang, Desc>,
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/// The size of this file, in bytes.
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pub size: Option<u64>,
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/// Used to request only a part of this file.
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pub range: Option<Range>,
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/// A list of hashes matching this entire file.
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pub hashes: Vec<Hash>,
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}
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impl File {
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/// Creates a new file descriptor.
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pub fn new() -> File {
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File::default()
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}
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/// Sets the date of last modification on this file.
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pub fn with_date(mut self, date: DateTime) -> File {
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self.date = Some(date);
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self
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}
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/// Sets the date of last modification on this file from an ISO-8601
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/// string.
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pub fn with_date_str(mut self, date: &str) -> Result<File, Error> {
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self.date = Some(DateTime::from_str(date)?);
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Ok(self)
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}
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/// Sets the MIME type of this file.
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pub fn with_media_type(mut self, media_type: String) -> File {
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self.media_type = Some(media_type);
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self
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}
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/// Sets the name of this file.
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pub fn with_name(mut self, name: String) -> File {
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self.name = Some(name);
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self
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}
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/// Sets a description for this file.
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pub fn add_desc(mut self, lang: &str, desc: Desc) -> File {
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self.descs.insert(Lang::from(lang), desc);
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self
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}
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/// Sets the file size of this file, in bytes.
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pub fn with_size(mut self, size: u64) -> File {
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self.size = Some(size);
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self
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}
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/// Request only a range of this file.
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pub fn with_range(mut self, range: Range) -> File {
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self.range = Some(range);
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self
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}
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/// Add a hash on this file.
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pub fn add_hash(mut self, hash: Hash) -> File {
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self.hashes.push(hash);
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self
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}
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}
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impl TryFrom<Element> for File {
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type Error = Error;
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fn try_from(elem: Element) -> Result<File, Error> {
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check_self!(elem, "file", JINGLE_FT);
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check_no_attributes!(elem, "file");
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let mut file = File {
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date: None,
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media_type: None,
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name: None,
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descs: BTreeMap::new(),
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size: None,
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range: None,
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hashes: vec![],
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};
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for child in elem.children() {
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if child.is("date", ns::JINGLE_FT) {
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if file.date.is_some() {
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return Err(Error::ParseError("File must not have more than one date."));
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}
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file.date = Some(child.text().parse()?);
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} else if child.is("media-type", ns::JINGLE_FT) {
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if file.media_type.is_some() {
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return Err(Error::ParseError(
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"File must not have more than one media-type.",
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));
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}
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file.media_type = Some(child.text());
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} else if child.is("name", ns::JINGLE_FT) {
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if file.name.is_some() {
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return Err(Error::ParseError("File must not have more than one name."));
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}
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file.name = Some(child.text());
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} else if child.is("desc", ns::JINGLE_FT) {
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let lang = get_attr!(child, "xml:lang", Default);
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let desc = Desc(child.text());
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if file.descs.insert(lang, desc).is_some() {
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return Err(Error::ParseError(
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"Desc element present twice for the same xml:lang.",
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));
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}
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} else if child.is("size", ns::JINGLE_FT) {
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if file.size.is_some() {
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return Err(Error::ParseError("File must not have more than one size."));
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}
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file.size = Some(child.text().parse()?);
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} else if child.is("range", ns::JINGLE_FT) {
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if file.range.is_some() {
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return Err(Error::ParseError("File must not have more than one range."));
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}
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file.range = Some(Range::try_from(child.clone())?);
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} else if child.is("hash", ns::HASHES) {
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file.hashes.push(Hash::try_from(child.clone())?);
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} else {
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return Err(Error::ParseError("Unknown element in JingleFT file."));
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}
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}
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Ok(file)
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}
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}
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impl From<File> for Element {
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fn from(file: File) -> Element {
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Element::builder("file", ns::JINGLE_FT)
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.append_all(
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file.date
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.map(|date| Element::builder("date", ns::JINGLE_FT).append(date)),
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)
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.append_all(
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file.media_type.map(|media_type| {
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Element::builder("media-type", ns::JINGLE_FT).append(media_type)
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}),
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)
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.append_all(
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file.name
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.map(|name| Element::builder("name", ns::JINGLE_FT).append(name)),
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)
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.append_all(file.descs.into_iter().map(|(lang, desc)| {
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Element::builder("desc", ns::JINGLE_FT)
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.attr("xml:lang", lang)
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.append(desc.0)
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}))
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.append_all(
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file.size.map(|size| {
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Element::builder("size", ns::JINGLE_FT).append(format!("{}", size))
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}),
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)
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.append_all(file.range)
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.append_all(file.hashes)
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.build()
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}
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}
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/// A wrapper element for a file.
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#[derive(Debug, Clone)]
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pub struct Description {
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/// The actual file descriptor.
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pub file: File,
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}
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impl TryFrom<Element> for Description {
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type Error = Error;
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fn try_from(elem: Element) -> Result<Description, Error> {
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check_self!(elem, "description", JINGLE_FT, "JingleFT description");
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check_no_attributes!(elem, "JingleFT description");
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let mut file = None;
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for child in elem.children() {
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if file.is_some() {
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return Err(Error::ParseError(
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"JingleFT description element must have exactly one child.",
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));
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}
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file = Some(File::try_from(child.clone())?);
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}
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if file.is_none() {
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return Err(Error::ParseError(
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"JingleFT description element must have exactly one child.",
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));
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}
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Ok(Description {
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file: file.unwrap(),
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})
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}
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}
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impl From<Description> for Element {
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fn from(description: Description) -> Element {
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Element::builder("description", ns::JINGLE_FT)
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.append(Node::Element(description.file.into()))
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.build()
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}
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}
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/// A checksum for checking that the file has been transferred correctly.
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#[derive(Debug, Clone)]
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pub struct Checksum {
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/// The identifier of the file transfer content.
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pub name: ContentId,
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/// The creator of this file transfer.
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pub creator: Creator,
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/// The file being checksummed.
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pub file: File,
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}
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impl TryFrom<Element> for Checksum {
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type Error = Error;
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fn try_from(elem: Element) -> Result<Checksum, Error> {
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check_self!(elem, "checksum", JINGLE_FT);
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check_no_unknown_attributes!(elem, "checksum", ["name", "creator"]);
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let mut file = None;
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for child in elem.children() {
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if file.is_some() {
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return Err(Error::ParseError(
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"JingleFT checksum element must have exactly one child.",
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));
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}
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file = Some(File::try_from(child.clone())?);
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}
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if file.is_none() {
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return Err(Error::ParseError(
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"JingleFT checksum element must have exactly one child.",
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));
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}
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Ok(Checksum {
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name: get_attr!(elem, "name", Required),
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creator: get_attr!(elem, "creator", Required),
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file: file.unwrap(),
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})
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}
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}
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impl From<Checksum> for Element {
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fn from(checksum: Checksum) -> Element {
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Element::builder("checksum", ns::JINGLE_FT)
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.attr("name", checksum.name)
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.attr("creator", checksum.creator)
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.append(Node::Element(checksum.file.into()))
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.build()
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}
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}
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generate_element!(
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/// A notice that the file transfer has been completed.
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Received, "received", JINGLE_FT,
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attributes: [
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/// The content identifier of this Jingle session.
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name: Required<ContentId> = "name",
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/// The creator of this file transfer.
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creator: Required<Creator> = "creator",
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]
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);
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::hashes::Algo;
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#[cfg(target_pointer_width = "32")]
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#[test]
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fn test_size() {
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assert_size!(Range, 40);
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assert_size!(File, 128);
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assert_size!(Description, 128);
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assert_size!(Checksum, 144);
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assert_size!(Received, 16);
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}
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#[cfg(target_pointer_width = "64")]
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#[test]
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fn test_size() {
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assert_size!(Range, 48);
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assert_size!(File, 184);
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assert_size!(Description, 184);
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assert_size!(Checksum, 216);
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assert_size!(Received, 32);
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}
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#[test]
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fn test_description() {
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let elem: Element = r#"
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<description xmlns='urn:xmpp:jingle:apps:file-transfer:5'>
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<file>
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<media-type>text/plain</media-type>
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<name>test.txt</name>
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<date>2015-07-26T21:46:00+01:00</date>
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<size>6144</size>
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<hash xmlns='urn:xmpp:hashes:2'
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algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash>
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</file>
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</description>
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"#
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.parse()
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.unwrap();
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let desc = Description::try_from(elem).unwrap();
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assert_eq!(desc.file.media_type, Some(String::from("text/plain")));
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assert_eq!(desc.file.name, Some(String::from("test.txt")));
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assert_eq!(desc.file.descs, BTreeMap::new());
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assert_eq!(
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desc.file.date,
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DateTime::from_str("2015-07-26T21:46:00+01:00").ok()
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);
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assert_eq!(desc.file.size, Some(6144u64));
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assert_eq!(desc.file.range, None);
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assert_eq!(desc.file.hashes[0].algo, Algo::Sha_1);
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assert_eq!(
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desc.file.hashes[0].hash,
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base64::decode("w0mcJylzCn+AfvuGdqkty2+KP48=").unwrap()
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);
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}
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#[test]
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fn test_request() {
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let elem: Element = r#"
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<description xmlns='urn:xmpp:jingle:apps:file-transfer:5'>
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<file>
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<hash xmlns='urn:xmpp:hashes:2'
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algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash>
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</file>
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</description>
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"#
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.parse()
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.unwrap();
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let desc = Description::try_from(elem).unwrap();
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assert_eq!(desc.file.media_type, None);
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assert_eq!(desc.file.name, None);
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assert_eq!(desc.file.descs, BTreeMap::new());
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assert_eq!(desc.file.date, None);
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assert_eq!(desc.file.size, None);
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assert_eq!(desc.file.range, None);
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assert_eq!(desc.file.hashes[0].algo, Algo::Sha_1);
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assert_eq!(
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desc.file.hashes[0].hash,
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base64::decode("w0mcJylzCn+AfvuGdqkty2+KP48=").unwrap()
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);
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}
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#[test]
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fn test_descs() {
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let elem: Element = r#"
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<description xmlns='urn:xmpp:jingle:apps:file-transfer:5'>
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<file>
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<media-type>text/plain</media-type>
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<desc xml:lang='fr'>Fichier secret !</desc>
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<desc xml:lang='en'>Secret file!</desc>
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<hash xmlns='urn:xmpp:hashes:2'
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algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash>
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</file>
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</description>
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"#
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.parse()
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.unwrap();
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let desc = Description::try_from(elem).unwrap();
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assert_eq!(
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desc.file.descs.keys().cloned().collect::<Vec<_>>(),
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["en", "fr"]
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);
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assert_eq!(desc.file.descs["en"], Desc(String::from("Secret file!")));
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assert_eq!(
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desc.file.descs["fr"],
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Desc(String::from("Fichier secret !"))
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);
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let elem: Element = r#"
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<description xmlns='urn:xmpp:jingle:apps:file-transfer:5'>
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<file>
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<media-type>text/plain</media-type>
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<desc xml:lang='fr'>Fichier secret !</desc>
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<desc xml:lang='fr'>Secret file!</desc>
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<hash xmlns='urn:xmpp:hashes:2'
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algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash>
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</file>
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</description>
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"#
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.parse()
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.unwrap();
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let error = Description::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Desc element present twice for the same xml:lang.");
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}
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#[test]
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fn test_received() {
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let elem: Element = "<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator'/>".parse().unwrap();
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let received = Received::try_from(elem).unwrap();
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assert_eq!(received.name, ContentId(String::from("coucou")));
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assert_eq!(received.creator, Creator::Initiator);
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let elem2 = Element::from(received.clone());
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let received2 = Received::try_from(elem2).unwrap();
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assert_eq!(received2.name, ContentId(String::from("coucou")));
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assert_eq!(received2.creator, Creator::Initiator);
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let elem: Element = "<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator'><coucou/></received>".parse().unwrap();
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let error = Received::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown child in received element.");
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let elem: Element =
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"<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' creator='initiator'/>"
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.parse()
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.unwrap();
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let error = Received::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Required attribute 'name' missing.");
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let elem: Element = "<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='coucou'/>".parse().unwrap();
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let error = Received::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown value for 'creator' attribute.");
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}
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#[cfg(not(feature = "disable-validation"))]
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#[test]
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fn test_invalid_received() {
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let elem: Element = "<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator' coucou=''/>".parse().unwrap();
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let error = Received::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown attribute in received element.");
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}
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#[test]
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fn test_checksum() {
|
||
let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator'><file><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash></file></checksum>".parse().unwrap();
|
||
let hash = vec![
|
||
195, 73, 156, 39, 41, 115, 10, 127, 128, 126, 251, 134, 118, 169, 45, 203, 111, 138,
|
||
63, 143,
|
||
];
|
||
let checksum = Checksum::try_from(elem).unwrap();
|
||
assert_eq!(checksum.name, ContentId(String::from("coucou")));
|
||
assert_eq!(checksum.creator, Creator::Initiator);
|
||
assert_eq!(
|
||
checksum.file.hashes,
|
||
vec!(Hash {
|
||
algo: Algo::Sha_1,
|
||
hash: hash.clone()
|
||
})
|
||
);
|
||
let elem2 = Element::from(checksum);
|
||
let checksum2 = Checksum::try_from(elem2).unwrap();
|
||
assert_eq!(checksum2.name, ContentId(String::from("coucou")));
|
||
assert_eq!(checksum2.creator, Creator::Initiator);
|
||
assert_eq!(
|
||
checksum2.file.hashes,
|
||
vec!(Hash {
|
||
algo: Algo::Sha_1,
|
||
hash: hash.clone()
|
||
})
|
||
);
|
||
|
||
let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator'><coucou/></checksum>".parse().unwrap();
|
||
let error = Checksum::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "This is not a file element.");
|
||
|
||
let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' creator='initiator'><file><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash></file></checksum>".parse().unwrap();
|
||
let error = Checksum::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Required attribute 'name' missing.");
|
||
|
||
let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='coucou'><file><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash></file></checksum>".parse().unwrap();
|
||
let error = Checksum::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Unknown value for 'creator' attribute.");
|
||
}
|
||
|
||
#[cfg(not(feature = "disable-validation"))]
|
||
#[test]
|
||
fn test_invalid_checksum() {
|
||
let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator' coucou=''><file><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash></file></checksum>".parse().unwrap();
|
||
let error = Checksum::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Unknown attribute in checksum element.");
|
||
}
|
||
|
||
#[test]
|
||
fn test_range() {
|
||
let elem: Element = "<range xmlns='urn:xmpp:jingle:apps:file-transfer:5'/>"
|
||
.parse()
|
||
.unwrap();
|
||
let range = Range::try_from(elem).unwrap();
|
||
assert_eq!(range.offset, 0);
|
||
assert_eq!(range.length, None);
|
||
assert_eq!(range.hashes, vec!());
|
||
|
||
let elem: Element = "<range xmlns='urn:xmpp:jingle:apps:file-transfer:5' offset='2048' length='1024'><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>kHp5RSzW/h7Gm1etSf90Mr5PC/k=</hash></range>".parse().unwrap();
|
||
let hashes = vec![Hash {
|
||
algo: Algo::Sha_1,
|
||
hash: vec![
|
||
144, 122, 121, 69, 44, 214, 254, 30, 198, 155, 87, 173, 73, 255, 116, 50, 190, 79,
|
||
11, 249,
|
||
],
|
||
}];
|
||
let range = Range::try_from(elem).unwrap();
|
||
assert_eq!(range.offset, 2048);
|
||
assert_eq!(range.length, Some(1024));
|
||
assert_eq!(range.hashes, hashes);
|
||
let elem2 = Element::from(range);
|
||
let range2 = Range::try_from(elem2).unwrap();
|
||
assert_eq!(range2.offset, 2048);
|
||
assert_eq!(range2.length, Some(1024));
|
||
assert_eq!(range2.hashes, hashes);
|
||
}
|
||
|
||
#[cfg(not(feature = "disable-validation"))]
|
||
#[test]
|
||
fn test_invalid_range() {
|
||
let elem: Element = "<range xmlns='urn:xmpp:jingle:apps:file-transfer:5' coucou=''/>"
|
||
.parse()
|
||
.unwrap();
|
||
let error = Range::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Unknown attribute in range element.");
|
||
}
|
||
}
|