Fix crashes while detecting other processes

Cargo.lock

@@ -155,15 +155,6 @@ dependencies = [
  "build_const 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "crossbeam-deque"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "crossbeam-deque"
 version = "0.6.1"
@@ -173,20 +164,6 @@ dependencies = [
  "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "crossbeam-epoch"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "crossbeam-epoch"
 version = "0.5.2"
@@ -200,14 +177,6 @@ dependencies = [
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "crossbeam-utils"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "crossbeam-utils"
 version = "0.5.0"
@@ -227,11 +196,6 @@ name = "dtoa"
 version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "either"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "encoding_rs"
 version = "0.8.6"
@@ -511,12 +475,12 @@ dependencies = [
  "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "sysinfo 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tar 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "web-view 0.2.1 (git+https://github.com/Boscop/web-view.git?rev=555f422d09cbb94e82a728d47e9e07ca91963f6e)",
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "winres 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "xz-decom 0.2.0 (git+https://github.com/j-selby/xz-decom.git?rev=9ebf3d00d9ff909c39eec1d2cf7e6e068ce214e5)",
  "zip 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -902,27 +866,6 @@ name = "rand_core"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "rayon"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "rayon-core"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "redox_syscall"
 version = "0.1.40"
@@ -1166,17 +1109,6 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "sysinfo"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "take"
 version = "0.1.0"
@@ -1717,15 +1649,11 @@ dependencies = [
 "checksum core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "286e0b41c3a20da26536c6000a280585d519fd07b3956b43aed8a79e9edce980"
 "checksum core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "716c271e8613ace48344f723b60b900a93150271e5be206212d052bbc0883efa"
 "checksum crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d663548de7f5cca343f1e0a48d14dcfb0e9eb4e079ec58883b7251539fa10aeb"
-"checksum crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f739f8c5363aca78cfb059edf753d8f0d36908c348f3d8d1503f03d8b75d9cf3"
 "checksum crossbeam-deque 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3486aefc4c0487b9cb52372c97df0a48b8c249514af1ee99703bf70d2f2ceda1"
-"checksum crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "927121f5407de9956180ff5e936fe3cf4324279280001cd56b669d28ee7e9150"
 "checksum crossbeam-epoch 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "30fecfcac6abfef8771151f8be4abc9e4edc112c2bcb233314cafde2680536e9"
-"checksum crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2760899e32a1d58d5abb31129f8fae5de75220bc2176e77ff7c627ae45c918d9"
 "checksum crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "677d453a17e8bd2b913fa38e8b9cf04bcdbb5be790aa294f2389661d72036015"
 "checksum dirs 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f679c09c1cf5428702cc10f6846c56e4e23420d3a88bcc9335b17c630a7b710b"
 "checksum dtoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6d301140eb411af13d3115f9a562c85cc6b541ade9dfa314132244aaee7489dd"
-"checksum either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3be565ca5c557d7f59e7cfcf1844f9e3033650c929c6566f511e8005f205c1d0"
 "checksum encoding_rs 0.8.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2a91912d6f37c6a8fef8a2316a862542d036f13c923ad518b5aca7bcaac7544c"
 "checksum fern 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "57915fe00a83af935983eb2d00b0ecc62419c4741b28c207ecbf98fd4a1b94c8"
 "checksum filetime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "da4b9849e77b13195302c174324b5ba73eec9b236b24c221a61000daefb95c5f"
@@ -1798,8 +1726,6 @@ dependencies = [
 "checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
 "checksum rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e464cd887e869cddcae8792a4ee31d23c7edd516700695608f5b98c67ee0131c"
 "checksum rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "edecf0f94da5551fc9b492093e30b041a891657db7940ee221f9d2f66e82eef2"
-"checksum rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "373814f27745b2686b350dd261bfd24576a6fb0e2c5919b3a2b6005f820b0473"
-"checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
 "checksum redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "c214e91d3ecf43e9a4e41e578973adeb14b474f2bee858742d127af75a0112b1"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9329abc99e39129fcceabd24cf5d85b4671ef7c29c50e972bc5afe32438ec384"
@@ -1831,7 +1757,6 @@ dependencies = [
 "checksum string 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00caf261d6f90f588f8450b8e1230fa0d5be49ee6140fdfbcb55335aff350970"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum syn 0.15.4 (registry+https://github.com/rust-lang/crates.io-index)" = "9056ebe7f2d6a38bc63171816fd1d3430da5a43896de21676dc5c0a4b8274a11"
-"checksum sysinfo 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4c747a1fbe091faa7bf76c19f40099f9f12495384c811485d81cf3d60c0eae62"
 "checksum take 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b157868d8ac1f56b64604539990685fa7611d8fa9e5476cf0c02cf34d32917c5"
 "checksum tar 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)" = "e8f41ca4a5689f06998f0247fcb60da6c760f1950cc9df2a10d71575ad0b062a"
 "checksum tempfile 3.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "55c1195ef8513f3273d55ff59fe5da6940287a0d7a98331254397f464833675b"

Cargo.toml

@@ -38,8 +38,6 @@ chrono = "0.4.5"
 
 clap = "2.32.0"
 
-sysinfo = "*"
-
 [build-dependencies]
 walkdir = "2"
 serde = "1.0.27"
@@ -50,6 +48,8 @@ toml = "0.4"
 # NFD is needed on Windows, as web-view doesn't work correctly here
 nfd = "0.0.4"
 
+winapi = { version = "0.3", features = ["psapi", "winbase", "winioctl", "winnt"] }
+
 [target.'cfg(windows)'.build-dependencies]
 winres = "0.1"
 cc = "1.0"

src/main.rs

@@ -41,7 +41,7 @@ extern crate chrono;
 
 extern crate clap;
 
-extern crate sysinfo;
+extern crate winapi;
 
 mod archives;
 mod assets;

src/native/mod.rs

@@ -1,11 +1,20 @@
 //! Natives/platform specific interactions.
 
+/// Basic definition of some running process.
+#[derive(Debug)]
+pub struct Process {
+    pub pid : usize,
+    pub name : String
+}
+
 #[cfg(windows)]
 mod natives {
     #![allow(non_upper_case_globals)]
     #![allow(non_camel_case_types)]
     #![allow(non_snake_case)]
 
+    const PROCESS_LEN: usize = 10192;
+
     use std::ffi::CString;
 
     use logging::LoggingErrors;
@@ -13,6 +22,16 @@ mod natives {
     use std::env;
     use std::process::Command;
 
+    use winapi::shared::minwindef::{DWORD, FALSE, MAX_PATH};
+    use winapi::um::winnt::{
+        HANDLE, PROCESS_QUERY_INFORMATION, PROCESS_TERMINATE, PROCESS_VM_READ,
+    };
+    use winapi::um::processthreadsapi::{OpenProcess};
+    use winapi::um::psapi::{
+        K32EnumProcesses,
+        EnumProcessModulesEx, GetModuleFileNameExW, LIST_MODULES_ALL,
+    };
+
     extern "C" {
         pub fn saveShortcut(
             shortcutPath: *const ::std::os::raw::c_char,
@@ -99,6 +118,87 @@ mod natives {
             .spawn()
             .log_expect("Unable to start child process");
     }
+
+    #[allow(unsafe_code)]
+    fn get_process_handler(pid: u32) -> Option<HANDLE> {
+        if pid == 0 {
+            return None;
+        }
+        let options = PROCESS_QUERY_INFORMATION | PROCESS_VM_READ | PROCESS_TERMINATE;
+        let process_handler = unsafe { OpenProcess(options, FALSE, pid as DWORD) };
+        if process_handler.is_null() {
+            let options = PROCESS_QUERY_INFORMATION | PROCESS_VM_READ;
+            let process_handler = unsafe { OpenProcess(options, FALSE, pid as DWORD) };
+            if process_handler.is_null() {
+                None
+            } else {
+                Some(process_handler)
+            }
+        } else {
+            Some(process_handler)
+        }
+    }
+
+    /// Returns a list of running processes
+    #[allow(unsafe_code)]
+    pub fn get_process_names() -> Vec<super::Process> {
+        // Port from https://github.com/GuillaumeGomez/sysinfo/blob/master/src/windows/system.rs
+        // I think that 10192 as length will be enough to get all processes at once...
+        let mut process_ids = [0 as DWORD; PROCESS_LEN];
+        let mut cb_needed = 0;
+
+        let size = ::std::mem::size_of::<DWORD>() * process_ids.len();
+        unsafe {
+            if K32EnumProcesses(process_ids.as_mut_ptr(),
+                                size as DWORD,
+                                &mut cb_needed) == 0 {
+                return vec![];
+            }
+        }
+
+        let nb_processes = cb_needed / ::std::mem::size_of::<DWORD>() as DWORD;
+
+        let mut processes = Vec::new();
+
+        for i in 0 .. nb_processes {
+            let pid = process_ids[i as usize];
+
+            unsafe {
+                if let Some(process_handler) = get_process_handler(pid) {
+                    let mut h_mod = ::std::ptr::null_mut();
+                    let mut process_name = [0u16; MAX_PATH + 1];
+                    let mut cb_needed = 0;
+
+                    if EnumProcessModulesEx(process_handler,
+                                            &mut h_mod,
+                                            ::std::mem::size_of::<DWORD>() as DWORD,
+                                            &mut cb_needed,
+                                            LIST_MODULES_ALL) != 0 {
+                        GetModuleFileNameExW(process_handler,
+                                           h_mod,
+                                           process_name.as_mut_ptr(),
+                                           MAX_PATH as DWORD + 1);
+
+                        let mut pos = 0;
+                        for x in process_name.iter() {
+                            if *x == 0 {
+                                break
+                            }
+                            pos += 1;
+                        }
+                        let name = String::from_utf16_lossy(&process_name[..pos]);
+
+                        processes.push(super::Process {
+                            pid: pid as _,
+                            name,
+                        });
+                    }
+                }
+            }
+        }
+
+        processes
+    }
 }
 
 #[cfg(not(windows))]
@@ -139,6 +239,12 @@ mod natives {
             eprintln!("Failed to delete installer log: {:?}", e);
         };
     }
+
+    /// Returns a list of running processes
+    pub fn get_process_names() -> Vec<super::Process> {
+        // TODO: no-op
+        vec![]
+    }
 }
 
 pub use self::natives::*;

src/tasks/ensure_only_instance.rs

@@ -7,10 +7,10 @@ use tasks::TaskDependency;
 use tasks::TaskMessage;
 use tasks::TaskParamType;
 
-use sysinfo;
+use native::Process;
-use sysinfo::get_current_pid;
+use native::get_process_names;
-use sysinfo::ProcessExt;
+
-use sysinfo::SystemExt;
+use std::process;
 
 pub struct EnsureOnlyInstanceTask {}
 
@@ -23,14 +23,13 @@ impl Task for EnsureOnlyInstanceTask {
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
 
-        let system = sysinfo::System::new();
+        let current_pid =  process::id() as usize;
-        let current_pid = get_current_pid();
+        for Process { pid, name } in get_process_names() {
-        for (pid, process) in system.get_process_list() {
+            if pid == current_pid {
-            if pid == &current_pid {
                 continue;
             }
 
-            let exe = process.exe();
+            let exe = name;
 
             if exe.ends_with("maintenancetool.exe") || exe.ends_with("maintenancetool") {
                 return Err(format!("Maintenance tool is already running!"));