int main(int argc, char *argv[]) { int err, i; struct ibc_opts ibc_opts; struct inotify_event *evt; char buf[BUF_LEN], output[FILEPATH_BUF_SZ]; const char *fp; memset(&ibc, 0, sizeof(struct ibc)); err = hcreate_r(HTAB_SIZE, &ibc.htab); if (err == 0) { perror("hcreate_r"); goto hcreate_error; } err = parse_opts(&ibc_opts, argc, argv); if (err == -1) { goto parsing_error; } for (i = 0; i < argc; i++) memset(argv[i], 0, strlen(argv[i])); err = ibc.fd = inotify_init(); if (err == -1) { perror("inotify_init"); goto inotify_init_error; } err = add_watches(&ibc_opts); if (err == -1) { goto add_watches_error; } while(read(ibc.fd, buf, BUF_LEN) > 0) { evt = (struct inotify_event *) buf; fp = get_inotify_event_path(evt->wd, evt->name); if (fp) { snprintf(output, FILEPATH_BUF_SZ, "%s/%s", ibc_opts.output_dir, evt->name); cp(output, fp); } } add_watches_error: close(ibc.fd); inotify_init_error: free_opts(&ibc_opts); parsing_error: hcreate_error: hdestroy_r(&ibc.htab); return err; }
/* handler for HUP. reloads the config file. */ void handle_hup_signal() { char * error; log_write("Received SIGHUP, reloading config file.\n"); keyval_node_free_all(config); config = keyval_parse_file(configfile); if ((error = keyval_get_error())) { fprintf(stderr, "%s", error); free(error); exit(1); } close(ifd); free_watchnodes(); ifd = inotify_init(); g_watchnode = add_watches(ifd); }
int main(int argc, char** argv) { int ifd, len = 0, i = 0, selectret = 0, maxfd, retryselect, pid; char buf[BUF_LEN]; char *configdir; char *pidfilename; char *statusfilename; char *statusbin; char *error_str; char *version_str = PACKAGE_STRING; char *pbuf; char *filename; FILE *pidfile; FILE *statusfile; fd_set set; struct inotify_event *event; struct argument *argument = argument_new(); struct pipe_list *pipe_list_cur; struct stat file_stat; struct watchnode *node; /* alloc pipe list */ pipe_list_head = malloc(sizeof(struct pipe_list)); pipe_list_head->next = NULL; /* set up signals for exiting/reaping */ signal(SIGINT, &handle_quit_signal); signal(SIGTERM, &handle_quit_signal); signal(SIGCHLD, &handle_child_signal); signal(SIGHUP, &handle_hup_signal); /* add command line arguments */ argument_register(argument, "help", "Prints this help text.", 0); argument_register(argument, "version", "Prints version information.", 0); argument_register(argument, "daemon", "Run as a daemon.", 0); argument_register(argument, "verbose", "Turns on debug text.", 0); argument_register(argument, "sync", "Sync mode (for debugging).", 0); argument_register(argument, "log-to-stdout", "Deprecated, use \"--log-to=stdout\" instead", 0); argument_register(argument, "log-to", "Log messages with specified way. " #ifdef USE_SYSLOG "Can be: stdout, file, syslog. \"file\" by default.", 1); #else "Can be: stdout, file. \"file\" by default.", 1); #endif if ((error_str = argument_parse(argument, argc, argv))) { fprintf(stderr, "Error in arguments: %s", error_str); free(error_str); return -1; } if (argument_exists(argument, "help")) { char *help_txt = argument_get_help_text(argument); printf("%s", help_txt); free(help_txt); return 0; } if (argument_exists(argument, "version")) { printf("%s\n", version_str); return 0; } if (argument_exists(argument, "verbose")) { verbose = 1; } if (argument_exists(argument, "daemon") && fork()) return 0; if (argument_exists(argument, "sync")) syncmode = 1; if (argument_exists(argument, "log-to-stdout")) fprintf(stderr, "Warning, this option is deprecated, " \ "please use new syntax: \"--log-to=stdout\".\n"); logtype = LOG_FILE; if (argument_exists(argument, "log-to") && \ (log_arg = argument_get_value(argument, "log-to")) != NULL) { if (strcmp(log_arg, "stdout") == 0) logtype = LOG_STDOUT; #ifdef USE_SYSLOG else if (strcmp(log_arg, "syslog") == 0) logtype = LOG_SYS; #endif else /* logtype already set to 'file' above */ fprintf(stderr, "Warning, selected unknown logging type. " \ "Will use \"--log-to=file\" instead.\n"); } /* get config dir (must free this) */ configdir = get_config_dir(); /* if a config file has not been specified, use default */ if (argument_get_extra(argument)) { configfile = strdup(argument_get_extra(argument)); } else { configfile = malloc (strlen(configdir) + strlen ("/config") + 1); sprintf(configfile, "%s/config", configdir); } argument_free(argument); free(configdir); if (access(configfile, R_OK) != 0) { fprintf(stderr, "error: could not open config file: %s\n", configfile); return -1; } /* create a pid file */ pidfilename = get_pid_filename(); if (stat(pidfilename, &file_stat) == 0) /* pidfile exists */ { pidfile = fopen(pidfilename, "r"); if (fscanf(pidfile, "%d", &pid) == 1) /* pidfile has a pid inside */ { char *binaryname; char *scanformat; if ((binaryname = strrchr(argv[0], '/')) != NULL) { binaryname++; } else { binaryname = argv[0]; } scanformat = malloc(strlen("Name: %") + strlen(binaryname) + strlen("s") + 1); statusfilename = malloc(strlen("/proc/") + 6 + strlen("/status") + 1); sprintf(statusfilename, "/proc/%d/status", pid); if (stat(statusfilename, &file_stat) != 0) /* write pid file if the process no longer exists */ { write_pid_file(pidfilename); } else /* process exists, so check owner and binary name */ { statusfile = fopen(statusfilename, "r"); statusbin = malloc(strlen(binaryname) + 2); /* the binary name may start with "fsniper" but be longer */ sprintf(scanformat, "Name: %%%ds", strlen(binaryname) + 1); fscanf(statusfile, scanformat, statusbin); free(statusfilename); fclose(statusfile); fclose(pidfile); if (strcmp(binaryname, statusbin) == 0 && file_stat.st_uid == getuid()) /* exit if the process is fsniper and is owned by the current user */ { printf("%s: already running instance found with pid %d. exiting.\n", binaryname, pid); exit(1); } else /* the pid file contains an old pid, one that isn't fsniper, or one not owned by the current user */ { write_pid_file(pidfilename); } } } else /* pidfile is invalid */ { fclose(pidfile); write_pid_file(pidfilename); } } else /* the pidfile doesn't exist */ { write_pid_file(pidfilename); } free(pidfilename); /* start up log */ if (!log_open()) { fprintf(stderr, "Error: could not start log.\n"); return -1; } ifd = inotify_init(); if (ifd < 0) { perror("inotify_init"); return -1; } if (verbose) log_write("Parsing config file: %s\n", configfile); config = keyval_parse_file(configfile); if ((error_str = keyval_get_error())) { fprintf(stderr, "%s", error_str); free(error_str); exit(1); } validate_config(config); /* add nodes to the inotify descriptor */ g_watchnode = add_watches(ifd); /* wait for events and then handle them */ while (1) { /* set up fds and max */ FD_ZERO(&set); FD_SET(ifd, &set); maxfd = ifd; for (pipe_list_cur = pipe_list_head->next; pipe_list_cur; pipe_list_cur = pipe_list_cur->next) { FD_SET(pipe_list_cur->pfd[0], &set); if (pipe_list_cur->pfd[0] > maxfd) maxfd = pipe_list_cur->pfd[0]; } retryselect = 1; while (retryselect) { /* use select to get activity on any of the fds */ selectret = select(maxfd + 1, &set, NULL, NULL, NULL); if (selectret == -1) { if (errno == EINTR) retryselect = 1; else handle_quit_signal(-2); } else retryselect = 0; } /* handle any events on the inotify fd */ if (FD_ISSET(ifd, &set)) { len = read(ifd, buf, BUF_LEN); while (i < len) { event = (struct inotify_event *) &buf[i]; if (event->len && (event->mask & IN_CLOSE_WRITE || event->mask & IN_MOVED_TO)) { /* if sync mode, just call handle_exec */ if (syncmode == 1) { handle_event(event, fileno(_logfd)); } else { /* create new pipe_list entry */ for (pipe_list_cur = pipe_list_head; pipe_list_cur->next != NULL; pipe_list_cur = pipe_list_cur->next) {} pipe_list_cur->next = malloc(sizeof(struct pipe_list)); pipe_list_cur->next->next = NULL; /* create pipe */ pipe(pipe_list_cur->next->pfd); if (fork() == 0) { /* child, close 0 */ close(pipe_list_cur->next->pfd[0]); log_close(); signal(SIGINT, &handle_child_quit_signal); signal(SIGTERM, &handle_child_quit_signal); handle_event(event, pipe_list_cur->next->pfd[1]); } else { /* parent, close 1 */ close(pipe_list_cur->next->pfd[1]); } } } else if (event->len && (event->mask & IN_CREATE && event->mask & IN_ISDIR)) { for (node = g_watchnode->next; node; node = node->next) if (node->wd == event->wd) break; if (node) { /* combine the name inotify gives with the full path to the file */ filename = malloc(strlen(node->path) + strlen("/") + strlen(event->name) + 1); sprintf(filename, "%s/%s", node->path, event->name); watch_dir(node, ifd, strdup(filename), node->section); free(filename); } } else if (event->len && (event->mask & IN_DELETE && event->mask & IN_ISDIR)) { for (node = g_watchnode->next; node; node = node->next) if (node->wd == event->wd) break; if (node) { /* combine the name inotify gives with the full path to the file */ filename = malloc(strlen(node->path) + strlen("/") + strlen(event->name) + 1); sprintf(filename, "%s/%s", node->path, event->name); unwatch_dir(filename, ifd); free(filename); } } i += EVENT_SIZE + event->len; } i = 0; } /* now lets see if we have any pipe activity */ pipe_list_cur = pipe_list_head->next; while (pipe_list_cur) { if (FD_ISSET(pipe_list_cur->pfd[0], &set)) { len = read(pipe_list_cur->pfd[0], buf, BUF_LEN); if (len == 0) { close(pipe_list_cur->pfd[0]); /* remove this item from the list */ pipe_list_cur = pipe_list_remove(pipe_list_head, pipe_list_cur); } else { /* print it somewhere */ pbuf = malloc(len + 1); snprintf(pbuf, len, "%s", buf); log_write("%s\n", pbuf); free(pbuf); pipe_list_cur = pipe_list_cur->next; } } else { pipe_list_cur = pipe_list_cur->next; } } } }
/* Main routine*/ int main( int argc, char **argv ) { int length, i = 0; int fd; char buffer[BUF_LEN], root[MAX_LEN]; /*Check for supplied path to monitor*/ switch(argc) { case 1: printf("No directory specified. Will monitor the entire filesystem...\n\n"); strcpy(root,"/"); break; case 2: strcpy(root,argv[1]); if(root[strlen(root)-1]!='/') strcat(root,"/"); puts(root); break; default: printf("Ignoring all other arguments after the first\n"); } /* Set up logger*/ fp_log = fopen("inotify_logger.log","a"); if (fp_log == NULL) { printf("Error opening logger. All output will be redirected to the stdout\n"); fp_log = stdout; } fd = inotify_init(); if ( fd < 0 ) { perror( "Couldn't initialize inotify"); } /* Read the sub-directories at one level under argv[1] * and monitor them for access */ add_watches(fd,root); /* do it forever*/ while(1) { i = 0; length = read( fd, buffer, BUF_LEN ); if ( length < 0 ) { perror( "read" ); } /* Read the events*/ while ( i < length ) { struct inotify_event *event = ( struct inotify_event * ) &buffer[ i ]; if ( event->len ) { if ( event->mask & IN_CREATE) { if (event->mask & IN_ISDIR) fprintf(fp_log,"%d DIR::%s CREATED\n", event->wd,event->name ); else fprintf(fp_log, "%d FILE::%s CREATED\n", event->wd, event->name); } if ( event->mask & IN_MODIFY) { if (event->mask & IN_ISDIR) fprintf(fp_log,"%d DIR::%s MODIFIED\n", event->wd,event->name ); else fprintf(fp_log,"%d FILE::%s MODIFIED\n", event->wd,event->name ); } if ( event->mask & IN_DELETE) { if (event->mask & IN_ISDIR) fprintf(fp_log,"%d DIR::%s DELETED\n", event->wd,event->name ); else fprintf(fp_log,"%d FILE::%s DELETED\n", event->wd,event->name ); } i += EVENT_SIZE + event->len; } } } /* Clean up*/ ( void ) close( fd ); return 0; }