int main(int argc, char **argv) { //LOGFILE = stdout; LOGFILE = fopen("/tmp/taskcontroller.log", "a+"); int i=0; for (i=0; i<argc; i++) fprintf(LOGFILE, "Arg[%i] = %s\n", i, argv[i]); //Minimum number of arguments required to run the task-controller if (argc < 4) { display_usage(LOGFILE); return INVALID_ARGUMENT_NUMBER; } int command; const char * job_id = NULL; const char * task_id = NULL; const char * cred_file = NULL; const char * script_file = NULL; const char * current_dir = NULL; const char * job_xml = NULL; int exit_code = 0; char * dir_to_be_deleted = NULL; char *executable_file = get_executable(); #ifndef HADOOP_CONF_DIR #error HADOOP_CONF_DIR must be defined #endif char *orig_conf_file = STRINGIFY(HADOOP_CONF_DIR) "/" CONF_FILENAME; char *conf_file = realpath(orig_conf_file, NULL); if (conf_file == NULL) { fprintf(LOGFILE, "Configuration file %s not found.\n", orig_conf_file); return INVALID_CONFIG_FILE; } if (check_configuration_permissions(conf_file) != 0) { return INVALID_CONFIG_FILE; } read_config(conf_file); free(conf_file); // look up the task tracker group in the config file char *tt_group = get_value(TT_GROUP_KEY); if (tt_group == NULL) { fprintf(LOGFILE, "Can't get configured value for %s.\n", TT_GROUP_KEY); exit(INVALID_CONFIG_FILE); } struct group *group_info = getgrnam(tt_group); if (group_info == NULL) { fprintf(LOGFILE, "Can't get group information for %s - %s.\n", tt_group, strerror(errno)); exit(INVALID_CONFIG_FILE); } set_tasktracker_uid(getuid(), group_info->gr_gid); // if we are running from a setuid executable, make the real uid root setuid(0); // set the real and effective group id to the task tracker group setgid(group_info->gr_gid); if (check_taskcontroller_permissions(executable_file) != 0) { fprintf(LOGFILE, "Invalid permissions on task-controller binary.\n"); return INVALID_TASKCONTROLLER_PERMISSIONS; } //checks done for user name if (argv[optind] == NULL) { fprintf(LOGFILE, "Invalid user name \n"); return INVALID_USER_NAME; } int ret = set_user(argv[optind]); if (ret != 0) { return ret; } optind = optind + 1; command = atoi(argv[optind++]); fprintf(LOGFILE, "main : command provided %d\n",command); fprintf(LOGFILE, "main : user is %s\n", user_detail->pw_name); switch (command) { case INITIALIZE_JOB: if (argc < 7) { fprintf(LOGFILE, "Too few arguments (%d vs 7) for initialize job\n", argc); return INVALID_ARGUMENT_NUMBER; } job_id = argv[optind++]; cred_file = argv[optind++]; job_xml = argv[optind++]; exit_code = initialize_job(user_detail->pw_name, job_id, cred_file, job_xml, argv + optind); break; case LAUNCH_TASK_JVM: if (argc < 7) { fprintf(LOGFILE, "Too few arguments (%d vs 7) for launch task\n", argc); return INVALID_ARGUMENT_NUMBER; } job_id = argv[optind++]; task_id = argv[optind++]; current_dir = argv[optind++]; script_file = argv[optind++]; exit_code = run_task_as_user(user_detail->pw_name, job_id, task_id, current_dir, script_file); break; case SIGNAL_TASK: if (argc < 5) { fprintf(LOGFILE, "Too few arguments (%d vs 5) for signal task\n", argc); return INVALID_ARGUMENT_NUMBER; } else { char* end_ptr = NULL; char* option = argv[optind++]; int task_pid = strtol(option, &end_ptr, 10); if (option == end_ptr || *end_ptr != '\0') { fprintf(LOGFILE, "Illegal argument for task pid %s\n", option); return INVALID_ARGUMENT_NUMBER; } option = argv[optind++]; int signal = strtol(option, &end_ptr, 10); if (option == end_ptr || *end_ptr != '\0') { fprintf(LOGFILE, "Illegal argument for signal %s\n", option); return INVALID_ARGUMENT_NUMBER; } exit_code = signal_user_task(user_detail->pw_name, task_pid, signal); } break; case DELETE_AS_USER: dir_to_be_deleted = argv[optind++]; exit_code= delete_as_user(user_detail->pw_name, dir_to_be_deleted); break; case DELETE_LOG_AS_USER: dir_to_be_deleted = argv[optind++]; exit_code= delete_log_directory(dir_to_be_deleted); break; case RUN_COMMAND_AS_USER: exit_code = run_command_as_user(user_detail->pw_name, argv + optind); break; default: exit_code = INVALID_COMMAND_PROVIDED; } fclose(LOGFILE); return exit_code; }
void test_run_task() { printf("\nTesting run task\n"); if (seteuid(0) != 0) { printf("FAIL: seteuid to root failed - %s\n", strerror(errno)); exit(1); } FILE* creds = fopen(TEST_ROOT "/creds.txt", "w"); if (creds == NULL) { printf("FAIL: failed to create credentials file - %s\n", strerror(errno)); exit(1); } if (fprintf(creds, "secret key\n") < 0) { printf("FAIL: fprintf failed - %s\n", strerror(errno)); exit(1); } if (fclose(creds) != 0) { printf("FAIL: fclose failed - %s\n", strerror(errno)); exit(1); } const char* script_name = TEST_ROOT "/task-script"; FILE* script = fopen(script_name, "w"); if (script == NULL) { printf("FAIL: failed to create script file - %s\n", strerror(errno)); exit(1); } if (seteuid(user_detail->pw_uid) != 0) { printf("FAIL: failed to seteuid back to user - %s\n", strerror(errno)); exit(1); } if (fprintf(script, "#!/bin/bash\n" "touch foobar\n" "exit 0") < 0) { printf("FAIL: fprintf failed - %s\n", strerror(errno)); exit(1); } if (fclose(script) != 0) { printf("FAIL: fclose failed - %s\n", strerror(errno)); exit(1); } fflush(stdout); fflush(stderr); char* task_dir = get_attempt_work_directory(TEST_ROOT "/local-1", username, "job_4", "task_1"); pid_t child = fork(); if (child == -1) { printf("FAIL: failed to fork process for init_job - %s\n", strerror(errno)); exit(1); } else if (child == 0) { if (run_task_as_user(username, "job_4", "task_1", task_dir, script_name, TEST_ROOT "creds.txt") != 0) { printf("FAIL: failed in child\n"); exit(42); } // should never return exit(1); } int status = 0; if (waitpid(child, &status, 0) <= 0) { printf("FAIL: failed waiting for process %d - %s\n", child, strerror(errno)); exit(1); } if (access(TEST_ROOT "/logs/userlogs/job_4/task_1", R_OK) != 0) { printf("FAIL: failed to create task log directory\n"); exit(1); } if (access(task_dir, R_OK) != 0) { printf("FAIL: failed to create task directory %s\n", task_dir); exit(1); } char buffer[100000]; sprintf(buffer, "%s/foobar", task_dir); if (access(buffer, R_OK) != 0) { printf("FAIL: failed to create touch file %s\n", buffer); exit(1); } free(task_dir); task_dir = get_job_log_directory("logs", "job_4/task_1"); if (access(task_dir, R_OK) != 0) { printf("FAIL: failed to create job log directory %s\n", task_dir); exit(1); } free(task_dir); }