better formatted mail body

ready for Release 0.1

Cargo.toml

@@ -6,3 +6,4 @@ authors = ["h4llow3En <[email protected]>"]
 [dependencies]
 json = "0.10.2"
 lettre = "0.6.0"
+libc = "0.2"

src/mailing.rs

@@ -1,27 +1,48 @@
+extern crate libc;
+use std::{slice, io, ptr};
 use lettre::transport::{smtp, EmailTransport};
 use lettre::email::{Email, EmailBuilder};
 
 pub fn gen_mail(content: &String, mailto: String, mailfrom: String) -> Email {
     let mail = EmailBuilder::new()
-        .to(&mailfrom[..])
-        .from((&mailto[..], "tdo notify"))
-        .body(content)
+        .to(mailfrom.as_str())
+        .from((mailto.as_str(), "tdo notify"))
+        .body(&gen_body(content))
         .subject("Your undone taks")
         .build()
         .unwrap();
     mail
 }
 
 pub fn send_mail(mail: Email, server: String, user: String, pass: String, port: u16) -> bool {
-    let mut sender = smtp::SmtpTransportBuilder::new((&server[..], port))
+    let mut sender = smtp::SmtpTransportBuilder::new((server.as_str(), port))
         .unwrap()
         .credentials(&user, &pass)
         .security_level(smtp::SecurityLevel::AlwaysEncrypt)
         .smtp_utf8(true)
         .connection_reuse(true)
         .build();
-
     let result = sender.send(mail);
-    println!("{:?}", result.is_ok());
     result.is_ok()
 }
+
+fn gen_body(content: &String) -> String {
+    let mut head: String = format!("Hello {},\nhere are your undone tasks.\n\n\n", get_user_name().unwrap());
+    head.push_str(content);
+    head
+}
+
+fn get_user_name() -> Result<String, io::Error> {
+    unsafe {
+        let uid = libc::geteuid();
+        let user = ptr::read(libc::getpwuid(uid));
+        let name = String::from_utf8_unchecked(slice::from_raw_parts(user.pw_gecos as *const u8,
+                                                           libc::strlen(user.pw_gecos) as usize)
+                .to_vec());
+        if name == "" {
+            Err(io::Error::last_os_error())
+        } else {
+            Ok(name)
+        }
+    }
+}

src/main.rs

@@ -1,6 +1,7 @@
 #[macro_use]
 extern crate json;
 extern crate lettre;
+extern crate libc;
 use std::env;
 mod mailing;
 mod settings;

src/settings.rs

@@ -10,7 +10,7 @@ pub struct Settings {
     pub server: String,
     pub user: String,
     pub pass: String,
-    pub port: u16,
+    pub port: u16
 }
 
 impl Into<JsonValue> for Settings {
@@ -22,7 +22,6 @@ impl Into<JsonValue> for Settings {
             "user" => self.user,
             "pass" => self.pass,
             "port" => self.port
-
         }
     }
 }
@@ -41,7 +40,7 @@ impl Settings {
             server: server,
             user: user,
             pass: pass,
-            port: port,
+            port: port
         }
     }
     pub fn load(path: &String) -> Result<Settings, Error> {