[pve-devel] [PATCH 2/2] switch from curl to ureq

[Thomas Lamprecht <t.lamprecht@proxmox.com>]

Not only less code, we lose a whopping 29 libraries on linkage cruft:

--- ldd.before  2022-01-26 19:03:25.759426164 +0100
+++ ldd.after   2022-01-26 19:03:31.919529632 +0100
@@ -5,36 +5,7 @@ librt.so.1
 libzstd.so.1
 libc.so.6
 /lib64/ld-linux-x86-64.so.2
-libcurl-gnutls.so.4
 libgcc_s.so.1
 libpthread.so.0
 libm.so.6
 libdl.so.2
-libnghttp2.so.14
-libidn2.so.0
-librtmp.so.1
-libssh2.so.1
-libpsl.so.5
-libnettle.so.8
-libgnutls.so.30
-libgssapi_krb5.so.2
-libldap_r-2.4.so.2
-liblber-2.4.so.2
-libbrotlidec.so.1
-libz.so.1
-libunistring.so.2
-libhogweed.so.6
-libgmp.so.10
-libgcrypt.so.20
-libp11-kit.so.0
-libtasn1.so.6
-libkrb5.so.3
-libk5crypto.so.3
-libcom_err.so.2
-libkrb5support.so.0
-libresolv.so.2
-libsasl2.so.2
-libbrotlicommon.so.1
-libgpg-error.so.0
-libffi.so.7
-libkeyutils.so.1

IOW.: curl is really nice for a CLI tool, but way to much overkill for simple
HTTP requests.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
---

IMO a no brainer, but I only did a quick "does it still work in general"
testing, I mean that *is* covering already quite a bit here ;-)

 Cargo.toml  |  2 +-
 src/main.rs | 41 ++++++++++++++---------------------------
 2 files changed, 15 insertions(+), 28 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 25c4569..7f55edc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ exclude = [ "build", "debian" ]
 [dependencies]
 anyhow = "1"
 mio = { version = "0.7", features = [ "net", "os-ext" ] }
-curl = "0.4"
+ureq = { version = "2.4", default-features = false, features = [ "gzip", ] }
 clap = "2.33"
 proxmox-io = "1"
 proxmox-sys = "0.2"
diff --git a/src/main.rs b/src/main.rs
index 0003834..29508e6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,7 +9,6 @@ use std::time::{Duration, Instant};
 
 use anyhow::{bail, format_err, Result};
 use clap::{App, AppSettings, Arg};
-use curl::easy::Easy;
 use mio::net::{TcpListener, TcpStream};
 use mio::unix::SourceFd;
 use mio::{Events, Interest, Poll, Token};
@@ -152,38 +151,26 @@ fn authenticate(
     authport: u16,
     port: Option<u16>,
 ) -> Result<()> {
-    let mut curl = Easy::new();
-    curl.url(&format!(
-        "http://localhost:{}/api2/json/access/ticket",
-        authport
-    ))?;
-
-    let username = curl.url_encode(username);
-    let ticket = curl.url_encode(ticket);
-    let path = curl.url_encode(path.as_bytes());
-
-    let mut post_fields = Vec::with_capacity(5);
-    post_fields.push(format!("username={}", username));
-    post_fields.push(format!("password={}", ticket));
-    post_fields.push(format!("path={}", path));
-
+    let mut post_fields: Vec<(&str, &str)> = Vec::with_capacity(5);
+    post_fields.append(& mut vec![
+        ("username", std::str::from_utf8(username)?),
+        ("password", std::str::from_utf8(ticket)?),
+        ("path", path),
+    ]);
     if let Some(perm) = perm {
-        let perm = curl.url_encode(perm.as_bytes());
-        post_fields.push(format!("privs={}", perm));
+        post_fields.push(("privs", perm));
     }
-
+    let port_str;
     if let Some(port) = port {
-        post_fields.push(format!("port={}", port));
+        port_str = port.to_string();
+        post_fields.push(("port", &port_str));
     }
 
-    curl.post_fields_copy(post_fields.join("&").as_bytes())?;
-    curl.post(true)?;
-    curl.perform()?;
+    let url = format!("http://localhost:{}/api2/json/access/ticket", authport);
+    let res = ureq::post(&url).send_form(&post_fields[..])?;
 
-    let response_code = curl.response_code()?;
-
-    if response_code != 200 {
-        bail!("invalid authentication, code {}", response_code);
+    if res.status() != 200 {
+        bail!("invalid authentication, {} - {}", res.status(), res.status_text());
     }
 
     Ok(())
-- 
2.34.1