feat(java): add error reporter

java/com_baidu_openrasp_v8_CrashReporter.cc

@@ -0,0 +1,157 @@
+/*
+ * Copyright 2017-2019 Baidu Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "com_baidu_openrasp_v8_CrashReporter.h"
+#include "header.h"
+
+#if defined(__APPLE__) || defined(__linux__)
+
+#include <execinfo.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <iostream>
+
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
+
+static char url[PATH_MAX + 128] = {0};
+static char filename[PATH_MAX + 128] = {0};
+static char hostname_form[PATH_MAX + 128] = "hostname=";
+static char crash_log_form[PATH_MAX + 128] = "crash_log=@";
+static bool raised = false;
+
+int fork_and_exec(const char* path, char* const* argv) {
+  pid_t pid = fork();
+
+  if (pid < 0) {
+    // fork failed
+    return -1;
+  } else if (pid == 0) {
+    // child process
+
+    execvp(path, argv);
+
+    // execve failed
+    _exit(-1);
+  } else {
+    // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't
+    // care about the actual exit code, for now.
+
+    int status;
+
+    // Wait for the child process to exit.  This returns immediately if
+    // the child has already exited. */
+    while (waitpid(pid, &status, 0) < 0) {
+      switch (errno) {
+        case ECHILD:
+          return 0;
+        case EINTR:
+          break;
+        default:
+          return -1;
+      }
+    }
+
+    if (WIFEXITED(status)) {
+      // The child exited normally; get its exit code.
+      return WEXITSTATUS(status);
+    } else if (WIFSIGNALED(status)) {
+      // The child exited because of a signal
+      // The best value to return is 0x80 + signal number,
+      // because that is what all Unix shells do, and because
+      // it allows callers to distinguish between process exit and
+      // process death by signal.
+      return 0x80 + WTERMSIG(status);
+    } else {
+      // Unknown exit code; pass it through
+      return status;
+    }
+  }
+}
+
+void signal_handler(int sig) {
+  if (access(filename, F_OK) == -1) {
+    if (raised == false) {
+      raised = true;
+      raise(SIGSEGV);
+      return;
+    } else {
+      strcpy(crash_log_form, "crash_log=not_found");
+    }
+  }
+  signal(sig, SIG_DFL);
+  // clang-format off
+  const char* const argv[] = {"curl",
+                              url,
+                              "--connect-timeout",
+                              "5",
+                              "-F",
+                              "job=crash",
+                              "-F",
+                              "language=java",
+                              "-F",
+                              hostname_form,
+                              "-F",
+                              crash_log_form,
+                              nullptr};
+  // clang-format on
+  if (fork_and_exec("curl", (char* const*)argv) != 0) {
+    perror("");
+    std::cout << "\n#\n# Failed to report crash log\n#\n" << std::endl;
+    // std::cout << url << std::endl;
+    // std::cout << hostname_form << std::endl;
+    // std::cout << crash_log_form << std::endl;
+  }
+}
+
+/*
+ * Class:     com_baidu_openrasp_v8_CrashReporter
+ * Method:    install
+ * Signature: (Ljava/lang/String;)V
+ */
+ALIGN_FUNCTION JNIEXPORT void JNICALL Java_com_baidu_openrasp_v8_CrashReporter_install(JNIEnv* env,
+                                                                                       jclass cls,
+                                                                                       jstring u) {
+  strncpy(url, Jstring2String(env, u).c_str(), PATH_MAX);
+  if (getcwd(filename, PATH_MAX) == nullptr) {
+    return;
+  }
+  snprintf(filename + strlen(filename), PATH_MAX, "/hs_err_pid%d.log", getpid());
+  if (gethostname(hostname_form + strlen(hostname_form), PATH_MAX) == -1) {
+    return;
+  }
+  strncpy(crash_log_form + strlen(crash_log_form), filename, PATH_MAX);
+  signal(SIGABRT, signal_handler);
+}
+
+#else
+
+/*
+ * Class:     com_baidu_openrasp_v8_CrashReporter
+ * Method:    install
+ * Signature: (Ljava/lang/String;)V
+ */
+ALIGN_FUNCTION JNIEXPORT void JNICALL Java_com_baidu_openrasp_v8_CrashReporter_install(JNIEnv* env,
+                                                                                       jclass cls,
+                                                                                       jstring u) {
+  return;
+}
+
+#endif

java/src/main/java/com/baidu/openrasp/v8/CrashReporter.java

@@ -0,0 +1,5 @@
+package com.baidu.openrasp.v8;
+
+public class CrashReporter {
+    public synchronized static native void install(String url);
+}