stellar-baselib 0.5.7

A low level Rust library that offers a comprehensive set of functions for reading, writing, hashing, and signing primitive XDR constructs utilized in the Stellar network
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

use stellar_strkey::ed25519::PublicKey;
// use stellar_xdr::{xdr::VecM, xdr::ClaimPredicate};
use crate::keypair::Keypair;
use crate::keypair::KeypairBehavior;
use crate::xdr;

pub struct Claimant {
    destination: Option<String>,
    predicate: xdr::ClaimPredicate,
}

// Define a trait for Claimant behavior
pub trait ClaimantBehavior {
    fn new(
        destination: Option<&str>,
        predicate: Option<xdr::ClaimPredicate>,
    ) -> Result<Self, &'static str>
    where
        Self: Sized;
    fn predicate_unconditional() -> xdr::ClaimPredicate;
    fn predicate_and(left: xdr::ClaimPredicate, right: xdr::ClaimPredicate) -> xdr::ClaimPredicate;
    fn predicate_or(left: xdr::ClaimPredicate, right: xdr::ClaimPredicate) -> xdr::ClaimPredicate;
    fn predicate_not(predicate: xdr::ClaimPredicate) -> xdr::ClaimPredicate;
    fn predicate_before_absolute_time(abs_before: i64) -> xdr::ClaimPredicate;
    fn predicate_before_relative_time(seconds_str: &str) -> xdr::ClaimPredicate;
    fn from_xdr(claimant_xdr: xdr::Claimant) -> Result<Self, &'static str>
    where
        Self: Sized;
    fn to_xdr_object(&self) -> xdr::Claimant;
    fn destination(&self) -> Option<String>;
    fn set_destination(&mut self, value: String);
    fn predicate(&self) -> &xdr::ClaimPredicate;
    fn set_predicate(&mut self, value: xdr::ClaimPredicate);
}

impl ClaimantBehavior for Claimant {
    fn new(
        destination: Option<&str>,
        predicate: Option<xdr::ClaimPredicate>,
    ) -> Result<Self, &'static str> {
        let key = PublicKey::from_string(destination.unwrap());

        if key.is_err() {
            return Err("accountId is invalid");
        }

        let actual_predicate = match predicate {
            Some(pred) => pred,
            None => xdr::ClaimPredicate::Unconditional,
        };

        Ok(Claimant {
            destination: destination.map(String::from),
            predicate: actual_predicate,
        })
    }

    fn predicate_unconditional() -> xdr::ClaimPredicate {
        xdr::ClaimPredicate::Unconditional
    }

    fn predicate_and(left: xdr::ClaimPredicate, right: xdr::ClaimPredicate) -> xdr::ClaimPredicate {
        let cc = vec![left, right];

        xdr::ClaimPredicate::And(xdr::VecM::<xdr::ClaimPredicate, 2>::try_from(cc).unwrap())
    }

    fn predicate_or(left: xdr::ClaimPredicate, right: xdr::ClaimPredicate) -> xdr::ClaimPredicate {
        let cc = vec![left, right];

        xdr::ClaimPredicate::Or(xdr::VecM::<xdr::ClaimPredicate, 2>::try_from(cc).unwrap())
    }

    fn predicate_not(predicate: xdr::ClaimPredicate) -> xdr::ClaimPredicate {
        xdr::ClaimPredicate::Not(Some(Box::new(predicate)))
    }

    fn predicate_before_absolute_time(abs_before: i64) -> xdr::ClaimPredicate {
        xdr::ClaimPredicate::BeforeAbsoluteTime(abs_before)
    }

    fn predicate_before_relative_time(seconds_str: &str) -> xdr::ClaimPredicate {
        let seconds = seconds_str
            .parse::<i64>()
            .expect("Failed to parse seconds string to i64");
        xdr::ClaimPredicate::BeforeRelativeTime(seconds)
    }

    fn from_xdr(claimant_xdr: xdr::Claimant) -> Result<Claimant, &'static str> {
        match claimant_xdr {
            xdr::Claimant::ClaimantTypeV0(value) => {
                let destination_key = value.destination.0;
                let val = match destination_key {
                    xdr::PublicKey::PublicKeyTypeEd25519(x) => x.to_string(),
                };

                Ok(Claimant {
                    destination: Some(val),
                    predicate: value.predicate,
                })
            }
            _ => Err("Invalid claimant type"),
        }
    }

    fn to_xdr_object(&self) -> xdr::Claimant {
        let claimant = xdr::ClaimantV0 {
            destination: Keypair::from_public_key(self.destination.clone().unwrap().as_str())
                .unwrap()
                .xdr_account_id(),
            predicate: self.predicate.clone(),
        };

        xdr::Claimant::ClaimantTypeV0(claimant)
    }

    fn destination(&self) -> Option<String> {
        self.destination.clone()
    }

    fn set_destination(&mut self, _value: String) {
        self.destination = Some(_value);
    }

    fn predicate(&self) -> &xdr::ClaimPredicate {
        &self.predicate
    }

    fn set_predicate(&mut self, _value: xdr::ClaimPredicate) {
        self.predicate = _value;
    }
}