tydle 0.1.15

YouTube video extractor written in Rust that can be used anywhere in web or native environments, based on an extremely small subset of yt-dlp.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168

use std::collections::HashMap;

use anyhow::Result;
use sha1::{Digest, Sha1};

use crate::{
    cache::CacheAccess,
    cookies::{CookieStore, DomainCookies},
    extractor::extract::YtExtractor,
    utils::unix_timestamp_secs,
    yt_interface::{YT_DOMAIN, YT_URL},
};

#[derive(Debug)]
pub struct SidCookies {
    pub yt_sapisid: Option<String>,
    pub yt_1psapisid: Option<String>,
    pub yt_3psapisid: Option<String>,
}

impl SidCookies {
    pub fn new(
        yt_sapisid: Option<String>,
        yt_1psapisid: Option<String>,
        yt_3psapisid: Option<String>,
    ) -> Self {
        Self {
            yt_sapisid,
            yt_1psapisid,
            yt_3psapisid,
        }
    }
}

pub trait ExtractorCookieHandle {
    fn get_cookies(&self, url: &str) -> Result<DomainCookies>;
    fn get_youtube_cookies(&self) -> Result<DomainCookies>;
    /// Get SAPISID, 1PSAPISID, 3PSAPISID cookie values.
    fn get_sid_cookies(&self) -> Result<SidCookies>;
    fn make_sid_authorization(
        &self,
        scheme: &str,
        sid: String,
        origin: String,
        additional_parts: HashMap<&str, String>,
    ) -> Result<String>;
    /// Generate API Session ID Authorization for Innertube requests. Assumes all requests are secure. (HTTPS)
    fn get_sid_authorization_header(
        &self,
        origin: Option<&String>,
        user_session_id: Option<String>,
    ) -> Result<Option<String>>;
}

impl<P, C> ExtractorCookieHandle for YtExtractor<P, C>
where
    P: CacheAccess<(String, String)> + Send + Sync,
    C: CacheAccess,
{
    fn get_cookies(&self, url: &str) -> Result<DomainCookies> {
        let cookies = self.cookie_jar.get_all(url)?;
        Ok(cookies)
    }

    fn get_youtube_cookies(&self) -> Result<DomainCookies> {
        self.get_cookies(YT_DOMAIN)
    }

    fn get_sid_cookies(&self) -> Result<SidCookies> {
        let yt_cookies = self.get_youtube_cookies()?;
        let yt_sapisid = yt_cookies
            .get("SAPISID")
            .and_then(|c| Some(c.value.clone()));
        let yt_3papisid = yt_cookies
            .get("__Secure-3PAPISID")
            .and_then(|c| Some(c.value.clone()));
        let yt_1papisid = yt_cookies
            .get("__Secure-1PAPISID")
            .and_then(|c| Some(c.value.clone()));
        let sid_cookies = SidCookies::new(
            yt_sapisid.or_else(|| yt_3papisid.clone()),
            yt_1papisid,
            yt_3papisid,
        );

        Ok(sid_cookies)
    }

    fn make_sid_authorization(
        &self,
        scheme: &str,
        sid: String,
        origin: String,
        additional_parts: HashMap<&str, String>,
    ) -> Result<String> {
        let time_stamp = unix_timestamp_secs().round().to_string();

        let mut hash_parts: Vec<String> = Vec::new();

        if !additional_parts.is_empty() {
            let joined = additional_parts
                .values()
                .cloned()
                .collect::<Vec<_>>()
                .join(":");
            hash_parts.push(joined);
        }

        hash_parts.extend_from_slice(&[time_stamp.clone(), sid.to_string(), origin.to_string()]);
        let joined = hash_parts.join(" ");

        let mut hasher = Sha1::new();
        hasher.update(joined.as_bytes());
        let sid_hash = format!("{:x}", hasher.finalize());

        let mut parts: Vec<String> = vec![time_stamp, sid_hash];

        if !additional_parts.is_empty() {
            let joined = additional_parts
                .values()
                .cloned()
                .collect::<Vec<_>>()
                .join("");

            parts.push(joined);
        }

        let sid_auth = format!("{} {}", scheme, parts.join("_"));
        Ok(sid_auth)
    }

    fn get_sid_authorization_header(
        &self,
        origin: Option<&String>,
        user_session_id: Option<String>,
    ) -> Result<Option<String>> {
        let mut authorizations: Vec<String> = Vec::new();
        let mut additional_parts: HashMap<&str, String> = HashMap::new();

        let sid_cookies = self.get_sid_cookies()?;

        if let Some(user_sess_id) = user_session_id {
            additional_parts.insert("u", user_sess_id);
        }

        for (scheme, sid_opt) in [
            ("SAPISIDHASH", sid_cookies.yt_sapisid),
            ("SAPISID1PHASH", sid_cookies.yt_1psapisid),
            ("SAPISID3PHASH", sid_cookies.yt_3psapisid),
        ] {
            if let Some(sid) = sid_opt {
                let auth = self.make_sid_authorization(
                    scheme,
                    sid,
                    origin.cloned().unwrap_or(YT_URL.to_string()),
                    additional_parts.clone(),
                )?;
                authorizations.push(auth);
            }
        }

        if authorizations.is_empty() {
            return Ok(None);
        }

        Ok(Some(authorizations.join(" ")))
    }
}