Add support for --proxy-cacert or --proxy-insecure

[lunatik13]

Currently it's impossible to use this unix curl example:
curl -x https://squid.domain.com:443 --proxy-user user:pass https://ifconfig.co --proxy-cacert bundle.crt
Or maybe i can use sщme available functions ?

[lunatik13]

squid.conf

https_port $SQUID_EXT_IP:443 cert=/path/to/wild.domain.crt  key=/path/to/wild.domain.key

extern crate curl;

use std::io::{stdout, Write};

use curl::easy::Easy;

fn main() {
    let mut easy = Easy::new();
    easy.proxy("https://squid.domain.com").unwrap();
    easy.proxy_port(443).unwrap();
    easy.proxy_username("user").unwrap();
    easy.proxy_password("pass").unwrap();
    easy.url("https://httpbin.org/ip").unwrap();
    easy.write_function(|data| {
        Ok(stdout().write(data).unwrap())
    }).unwrap();
    easy.perform().unwrap();

    println!("{}", easy.response_code().unwrap());
}

Error

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { description: "Peer certificate cannot be authenticated with given CA certificates", code: 60, extra: Some("SSL certificate problem: unable to get local issuer certificate") }', src/libcore/result.rs:868

[alexcrichton]

I'd definitely love to have support for these! This would probably just involve binding a constant or two and then adding the appropriate functions to access it.

Would you be interested in sending a PR for this functionality? I could certainly help out if needed!

[lunatik13]

I am try to add some changes to curl-rust.
Example usage:

extern crate curl;

use std::io::{stdout, Write};

use curl::easy::Easy;

fn main() {
    let mut easy = Easy::new();
    let proxy_user = "user".to_string();
    let proxy_pass = "pass".to_string();

    easy.proxy("https://bla.com").unwrap();
    easy.proxy_port(443).unwrap();
    easy.proxy_username(&proxy_user).unwrap();
    easy.proxy_password(&proxy_pass).unwrap();
    easy.proxy_capath("/path/to/dit/with/cert").unwrap();
    easy.url("https://httpbin.org/ip").unwrap();
    easy.write_function(|data| {
        Ok(stdout().write(data).unwrap())
    }).unwrap();
    easy.perform().unwrap();

    println!("{}", easy.response_code().unwrap());
}

example.toml

[package]
name = "parser-config"
version = "0.1.0"
authors = ["user"]

# [dependencies]
# curl = "*"
[dependencies.curl]
path = "/local/curl-rust"

Error:
thread 'main' panicked at 'called Result::unwrap()on anErr value: Error { description: "An unknown option was passed in to libcurl", code: 48, extra: None }', /checkout/src/libcore/result.rs:859
Changes commit

[alexcrichton]

You may want to try running cargo run inside of the systest folder which will validate the value of CURLOPT_PROXY_CAPATH, and failing that perhaps you're linking against a version of libcurl itself that doesn't have the option?