我正在使用scapy的bgp层，我想知道是否有可能在scapy Fields类中获得一些常量值。
例如，类BGPPathAttr包含一个字段type_code，该字段引用了一个映射，该映射包含NEXT_HOP和RFC 4271中定义的幻数3之间的关联。我想访问通过做出类似于BGPPathAttr.type_code.NEXT_HOP
谢谢
摘录代码./scapy/scapy/contrib/bgp.py
path_attributes = {
0: "Reserved",
1: "ORIGIN", # RFC 4271
2: "AS_PATH", # RFC 4271
3: "NEXT_HOP", # RFC 4271
[...]
}
class BGPPathAttr(Packet):
name = "BGPPathAttr"
fields_desc = [
ByteEnumField("type_code", 0, path_attributes)
]
答案 0 :(得分：2)
嗨，
您可以使用import * as React from 'react';
//import { ReactComponent } from '*.svg';
import '../css/form.css';
import Sidebar from '../Component/sidebar/sidebar';
const axios = require('axios');
class Adduser extends React.Component<any, any> {
constructor(props: any) {
super(props);
this.state = {
teacherId: 0,
name: '',
email: '',
password: '',
confirmPassword: '',
gender: '',
question: [],
nameError: '',
passError: '',
emailError: ''
};
this.handleChange = this.handleChange.bind(this);
this.handleSubmit = this.handleSubmit.bind(this);
this.handlePasswordChange = this.handlePasswordChange.bind(this);
}
componentWillMount() {
if (this.props.match.params.id != undefined) {
axios.get('https://localhost:44310/api/Users/' + this.props.match.params.id)
.then((response: any) => {
this.setState({
teacherId: response.data.teacherId,
name: response.data.name,
email: response.data.email,
password: response.data.password,
confirmPassword: response.data.confirmPassword,
gender: response.data.gender,
role: response.data.role,
question: []
});
})
.catch((error: any) => {
console.log(error);
});
}
}
handleChange = (event: any) => {
this.setState({ [event.target.name]: event.target.value }, () => this.validateName())
}
handlePasswordChange = (event: any) => {
this.setState({ [event.target.name]: event.target.value }, () => this.validatePassword())
}
validateName() {
const { name } = this.state;
this.setState(
{ nameError: name.length > 3 ? null : 'Name must contain atleast 3 characters' }
// passError: password.length > 3 || password ? null : 'Password must contain atleast 6 characters'}
)
}
validatePassword() {
const { password } = this.state;
this.setState({
passError: password.length > 6 ? null : 'Password must contain atleast 6 characters'
}
)
}
validateEmail(email: any) {
const pattern = /[a-zA-Z0-9]+[\.]?([a-zA-Z0-9]+)?[\@][a-z]{3,9}[\.][a-z]{2,5}/;
const result = pattern.test(email);
if (result === true) {
this.setState({
emailError: false,
email: email
})
} else {
this.setState({
emailError: true
})
}
// email = $('email');
// var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
// if (filter.test(email.value)) {
// // Yay! valid
// return '';
// }
// else
// return 'invalid email';
}
handleSubmit(event: any) {
event.preventDefault();
if (this.props.match.params.id != undefined) {
const { password, confirmPassword } = this.state
if (password !== confirmPassword) {
alert('passwords do not match')
}
else {
axios.put(`https://localhost:44310/api/Users/${this.props.match.params.id}`, this.state)
.then((response: any) => {
this.props.history.push('/');
})
.catch(function (error: any) {
console.log(error);
});
}
} else {
const { password, confirmPassword, name } = this.state
if (password !== confirmPassword) {
alert('passwords do not match')
}
else {
axios.post('https://localhost:44310/api/Users/', this.state)
.then((response: any) => {
console.log(response);
alert('User has been added successfully')
})
.catch(function (error: any) {
console.log(error);
alert('Sorry! Your request can not be processed at the moment')
});
}
}
}
render() {
return (
<div className="row">
<div className=" col-lg-2">
<Sidebar />
</div>
<div className="col-lg-10">
<div className="content" >
<div className="container-fluid">
<div className="row" >
<div className="col-lg-3"> </div>
<div className="col-lg-6" style={{ paddingTop: "30px" }}>
<div id="ui">
{this.props.match.params.id != undefined ? <h1 style={{ marginTop: "15px" }}>EDIT ACCOUNT</h1> : <h1 style={{ marginTop: "15px" }}>ADD ACCOUNT</h1>}
<form className="form-group" method="post" onSubmit={this.handleSubmit} autoComplete="off">
<label> Name:</label>
<div className="name">
<input type="text"
onChange={this.handleChange}
name="name"
value={this.state.name}
className={`form-control ${this.state.nameError ? 'is-invalid' : ''}`}
placeholder="Enter username " required
onBlur={this.validateName.bind(this)} />
<div className="invalid-feedback">Name must be longer than 3 characters</div>
</div>
<br />
<label> Email:</label>
<div className="mail">
<input type="email" name="email" value={this.state.email} onChange={this.handleChange} className="form-control" placeholder="Enter E-mail" required />
<div className="invalid-feedback">Email is invalid</div>
</div>
<br />
<div className="row">
<div className="col-lg-6">
<label> Password:</label>
<div className="pass">
<input type="password" name="password" value={this.state.password} onChange={this.handlePasswordChange} className={`form-control ${this.state.passError ? 'is-invalid' : ''}`} id="pwd" placeholder="Enter password" required onBlur={this.validatePassword.bind(this)} />
<div className="invalid-feedback">Password must be longer than 6 characters</div>
</div>
</div>
<div className="col-lg-6">
<label> Re-type Password:</label>
<div className="pass1">
<input type="password" name="confirmPassword" value={this.state.pass1} onChange={this.handleChange} className="form-control" id="pwd1" placeholder="Re-type password" required />
</div>
</div>
<br />
<div className="col-lg-12">
<select className="form-control" name="gender" value={this.state.gender} onChange={this.handleChange} id="sel" style={{ marginTop: "35px" }} required>
<option>Choose Gender</option>
<option>Male</option>
<option>Female</option>
</select>
</div>
<br />
<div className="col-lg-12">
<select className="form-control" name="role" value={this.state.role} onChange={this.handleChange} id="sel" style={{ marginTop: "35px" }} required>
<option>Role</option>
<option>Admin</option>
<option>Teacher</option>
<option>TeamLead</option>
</select>
</div>
<br />
<div className="col-lg-12">
{/* <Link className="nav-link" to="/"> */}
<input type="submit" name="submit" value="submit" className="btn btn-primary btn-block btn-lg" style={{ marginTop: "20px" }} />
{/* </Link> */}
</div>
</div>
</form>
</div>
</div>
<div className="col-lg-3"></div>
</div>
</div>
</div>
</div>
</div>
);
}
}
export default Adduser;
属性（和s2i进行反向翻译）：
i2s