use IsTerminal trait whenever possible

Continuation of
https://lists.proxmox.com/pipermail/pbs-devel/2023-November/007078.html.

Signed-off-by: Maximiliano Sandoval R <m.sandoval@proxmox.com>

pbs-client/src/http_client.rs

@@ -1,4 +1,4 @@
-use std::io::Write;
+use std::io::{IsTerminal, Write};
 use std::sync::{Arc, Mutex, RwLock};
 use std::time::Duration;
 
@@ -458,7 +458,7 @@ impl HttpClient {
                                 &auth.ticket,
                                 &auth.token,
                             ) {
-                                if tty::stdout_isatty() {
+                                if std::io::stdout().is_terminal() {
                                     log::error!("storing login ticket failed: {}", err);
                                 }
                             }
@@ -496,7 +496,7 @@ impl HttpClient {
                         &auth.ticket,
                         &auth.token,
                     ) {
-                        if tty::stdout_isatty() {
+                        if std::io::stdout().is_terminal() {
                             log::error!("storing login ticket failed: {}", err);
                         }
                     }
@@ -548,7 +548,7 @@ impl HttpClient {
 
     fn get_password(username: &Userid, interactive: bool) -> Result<String, Error> {
         // If we're on a TTY, query the user for a password
-        if interactive && tty::stdin_isatty() {
+        if interactive && std::io::stdin().is_terminal() {
             let msg = format!("Password for \"{}\": ", username);
             return Ok(String::from_utf8(tty::read_password(&msg)?)?);
         }
@@ -599,7 +599,7 @@ impl HttpClient {
         }
 
         // If we're on a TTY, query the user
-        if interactive && tty::stdin_isatty() {
+        if interactive && std::io::stdin().is_terminal() {
             log::info!("fingerprint: {}", fp_string);
             loop {
                 eprint!("Are you sure you want to continue connecting? (y/n): ");

pbs-client/src/tools/key_source.rs

@@ -1,4 +1,4 @@
-use std::io::Read;
+use std::io::{IsTerminal, Read};
 use std::os::unix::io::{FromRawFd, RawFd};
 use std::path::PathBuf;
 
@@ -351,7 +351,7 @@ pub fn get_encryption_key_password() -> Result<Vec<u8>, Error> {
     }
 
     // If we're on a TTY, query the user for a password
-    if tty::stdin_isatty() {
+    if std::io::stdin().is_terminal() {
         return tty::read_password("Encryption Key Password: ");
     }
 

proxmox-backup-client/src/key.rs

@@ -1,3 +1,4 @@
+use std::io::IsTerminal;
 use std::path::PathBuf;
 
 use anyhow::{bail, format_err, Error};
@@ -100,7 +101,7 @@ fn create(kdf: Option<Kdf>, path: Option<String>, hint: Option<String>) -> Resul
         }
         Kdf::Scrypt | Kdf::PBKDF2 => {
             // always read passphrase from tty
-            if !tty::stdin_isatty() {
+            if !std::io::stdin().is_terminal() {
                 bail!("unable to read passphrase - no tty");
             }
 
@@ -236,7 +237,7 @@ fn change_passphrase(
 
     let kdf = kdf.unwrap_or_default();
 
-    if !tty::stdin_isatty() {
+    if !std::io::stdin().is_terminal() {
         bail!("unable to change passphrase - no tty");
     }
 
@@ -359,7 +360,7 @@ fn import_master_pubkey(path: String) -> Result<(), Error> {
 /// encryption key onto the backup server along with each backup.
 fn create_master_key() -> Result<(), Error> {
     // we need a TTY to query the new password
-    if !tty::stdin_isatty() {
+    if !std::io::stdin().is_terminal() {
         bail!("unable to create master key - no tty");
     }
 

src/bin/proxmox_backup_debug/diff.rs

@@ -1,6 +1,6 @@
 use std::collections::{HashMap, HashSet};
 use std::ffi::{OsStr, OsString};
-use std::io::Write;
+use std::io::{IsTerminal, Write};
 use std::iter::FromIterator;
 use std::path::{Path, PathBuf};
 use std::sync::Arc;
@@ -601,7 +601,7 @@ impl FileEntryPrinter {
         let color_choice = match output_params.color {
             ColorMode::Always => ColorChoice::Always,
             ColorMode::Auto => {
-                if unsafe { libc::isatty(1) == 1 } {
+                if std::io::stdout().is_terminal() {
                     // Show colors unless `TERM=dumb` or `NO_COLOR` is set.
                     ColorChoice::Auto
                 } else {

src/bin/proxmox_tape/encryption_key.rs

@@ -1,3 +1,5 @@
+use std::io::IsTerminal;
+
 use anyhow::{bail, format_err, Error};
 use serde_json::Value;
 
@@ -149,7 +151,7 @@ fn change_passphrase(
     mut param: Value,
     rpcenv: &mut dyn RpcEnvironment,
 ) -> Result<(), Error> {
-    if !tty::stdin_isatty() {
+    if !std::io::stdin().is_terminal() {
         bail!("unable to change passphrase - no tty");
     }
 
@@ -208,7 +210,7 @@ async fn restore_key(
     } else if !drive_passed && key.is_none() && key_file.is_none() {
         bail!("one of either 'drive' or 'key' parameter must be set!");
     }
-    if !tty::stdin_isatty() {
+    if !std::io::stdin().is_terminal() {
         bail!("no password input mechanism available");
     }
 
@@ -283,7 +285,7 @@ async fn restore_key(
 )]
 /// Create key (read password from stdin)
 fn create_key(mut param: Value, rpcenv: &mut dyn RpcEnvironment) -> Result<(), Error> {
-    if !tty::stdin_isatty() {
+    if !std::io::stdin().is_terminal() {
         bail!("no password input mechanism available");
     }