add: additional information to ptrace command

This commit adds more information to the ptrace command to allow better integration with external features.

loader/src/common/daemon.cpp

@@ -165,6 +165,60 @@ namespace zygiskd {
 
         info->pid = socket_utils::read_u32(fd);
 
+info->modules = (struct zygote_modules *)malloc(sizeof(struct zygote_modules));
+        if (info->modules == NULL) {
+          info->modules->modules_count = 0;
+
+          close(fd);
+
+          return;
+        }
+
+        info->modules->modules_count = socket_utils::read_usize(fd);
+
+        if (info->modules->modules_count == 0) {
+          info->modules->modules = NULL;
+
+          close(fd);
+
+          return;
+        }
+
+        info->modules->modules = (char **)malloc(sizeof(char *) * info->modules->modules_count);
+        if (info->modules->modules == NULL) {
+          free(info->modules);
+          info->modules = NULL;
+          info->modules->modules_count = 0;
+
+          close(fd);
+
+          return;
+        }
+
+        for (size_t i = 0; i < info->modules->modules_count; i++) {
+          /* INFO by ThePedroo: Ugly solution to read with std::string existance (temporary) */
+          std::string name = socket_utils::read_string(fd);
+
+          char module_path[PATH_MAX];
+          snprintf(module_path, sizeof(module_path), "/data/adb/modules/%s/module.prop", name.c_str());
+
+          FILE *module_prop = fopen(module_path, "r");
+          if (module_prop == NULL) {
+            info->modules->modules[i] = strdup(name.c_str());
+          } else {
+            char line[1024];
+            while (fgets(line, sizeof(line), module_prop) != NULL) {
+              if (strncmp(line, "name=", 5) == 0) {
+                info->modules->modules[i] = strndup(line + 5, strlen(line) - 6);
+
+                break;
+              }
+            }
+
+            fclose(module_prop);
+          }
+        }
+
         close(fd);
       } else info->running = false;
     }

loader/src/include/daemon.h

@@ -42,6 +42,11 @@ private:
     Fd fd_ = -1;
 };
 
+struct zygote_modules {
+  char **modules;
+  size_t modules_count;
+};
+
 enum zygote_root_impl {
   ZYGOTE_ROOT_IMPL_NONE,
   ZYGOTE_ROOT_IMPL_APATCH,
@@ -50,6 +55,7 @@ enum zygote_root_impl {
 };
 
 struct zygote_info {
+  struct zygote_modules *modules;
   enum zygote_root_impl root_impl;
   pid_t pid;
   bool running;

loader/src/ptracer/main.cpp

@@ -82,7 +82,52 @@ int main(int argc, char **argv) {
       }
     }
 
-    printf("Is the daemon running: %s\n", info.running ? "yes" : "no");
+    #ifdef __LP64__
+      printf("Daemon64 running: %d\n", status64.daemon_running);
+      printf("Zygote64 injected: %s\n", status64.zygote_injected ? "yes" : "no");
+    #else
+      printf("Daemon32 running: %s\n", status32.daemon_running ? "yes" : "no");
+      printf("Zygote32 injected: %s\n", status32.zygote_injected ? "yes" : "no");
+    #endif
+
+    switch (tracing_state) {
+      case TRACING: {
+        printf("Tracing state: TRACING\n");
+
+        break;
+      }
+      case STOPPING: {
+        printf("Tracing state: STOPPING\n");
+        printf("Stop reason: %s\n", monitor_stop_reason);
+
+        break;
+      }
+      case STOPPED: {
+        printf("Tracing state: STOPPED\n");
+        printf("Stop reason: %s\n", monitor_stop_reason);
+
+        break;
+      }
+      case EXITING: {
+        printf("Tracing state: EXITING\n");
+
+        break;
+      }
+    }
+
+    if (info.modules->modules_count != 0) {
+      printf("Modules: %zu\n", info.modules->modules_count);
+
+      for (size_t i = 0; i < info.modules->modules_count; i++) {
+        printf(" - %s\n", info.modules->modules[i]);
+
+        free(info.modules->modules[i]);
+      }
+
+      free(info.modules->modules);
+    } else {
+      printf("Modules: N/A\n");
+    }
 
     return 0;
   } else {

loader/src/ptracer/monitor.cpp

@@ -22,14 +22,7 @@
 
 static void updateStatus();
 
-enum TracingState {
-  TRACING = 1,
-  STOPPING,
-  STOPPED,
-  EXITING
-};
-
-static char monitor_stop_reason[32];
+char monitor_stop_reason[32];
 
 constexpr char SOCKET_NAME[] = "init_monitor";
 
@@ -110,20 +103,11 @@ struct EventLoop {
     }
 };
 
-static TracingState tracing_state = TRACING;
+TracingState tracing_state = TRACING;
 static char prop_path[PATH_MAX];
 
-struct Status {
-  bool supported = false;
-  bool zygote_injected = false;
-  bool daemon_running = false;
-  pid_t daemon_pid = -1;
-  char *daemon_info;
-  char *daemon_error_info;
-};
-
-static Status status64;
-static Status status32;
+Status status64;
+Status status32;
 
 struct SocketHandler : public EventHandler {
   int sock_fd_;

loader/src/ptracer/monitor.h

@@ -3,6 +3,29 @@
 
 #include <stdbool.h>
 
+extern char monitor_stop_reason[32];
+
+enum TracingState {
+  TRACING = 1,
+  STOPPING,
+  STOPPED,
+  EXITING
+};
+
+extern TracingState tracing_state;
+
+struct Status {
+  bool supported = false;
+  bool zygote_injected = false;
+  bool daemon_running = false;
+  pid_t daemon_pid = -1;
+  char *daemon_info;
+  char *daemon_error_info;
+};
+
+extern Status status64;
+extern Status status32;
+
 void init_monitor();
 
 bool trace_zygote(int pid);

zygiskd/src/zygiskd.rs

@@ -283,6 +283,12 @@ fn handle_daemon_action(
 
           let pid = unsafe { libc::getpid() };
           stream.write_u32(pid as u32)?;
+
+          stream.write_usize(context.modules.len())?;
+
+          for module in context.modules.iter() {
+              stream.write_string(&module.name)?;
+          }
         }
         DaemonSocketAction::ReadModules => {
             stream.write_usize(context.modules.len())?;