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- #include <stdlib.h>
- #include <stdint.h>
- #include <stdio.h>
- #include <string.h>
- #include <assert.h>
- #include <unistd.h>
- #include <errno.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- #include <getopt.h>
- #include <sys/socket.h>
- #include <sys/un.h>
- #include <syslog.h>
- #include <sys/wait.h>
- #include <errno.h>
- #ifdef HAVE_LOCALE_H
- #include <locale.h>
- #endif
- #ifdef HAVE_LANGINFO_CODESET
- #include <langinfo.h>
- #endif
- #include <faux/faux.h>
- #include <faux/str.h>
- #include <faux/msg.h>
- #include <faux/list.h>
- #include <faux/file.h>
- #include <faux/eloop.h>
- #include <klish/ktp.h>
- #include <klish/ktp_session.h>
- #include <tinyrl/tinyrl.h>
- #include "private.h"
- // Client mode
- typedef enum {
- MODE_CMDLINE,
- MODE_FILES,
- MODE_STDIN,
- MODE_INTERACTIVE
- } client_mode_e;
- // Context for main loop
- typedef struct ctx_s {
- ktp_session_t *ktp;
- tinyrl_t *tinyrl;
- struct options *opts;
- char *hotkeys[VT100_HOTKEY_MAP_LEN]; // MODE_INTERACTIVE
- // pager_working flag values:
- // TRI_UNDEFINED - Not started yet or not necessary
- // TRI_TRUE - Pager is working
- // TRI_FALSE - Can't start pager or pager has exited
- tri_t pager_working;
- FILE *pager_pipe;
- client_mode_e mode;
- // Parsing state vars
- faux_list_node_t *cmdline_iter; // MODE_CMDLINE
- faux_list_node_t *files_iter; // MODE_FILES
- faux_file_t *files_fd; // MODE_FILES
- faux_file_t *stdin_fd; // MODE_STDIN
- } ctx_t;
- // KTP session static functions
- static bool_t stdout_cb(ktp_session_t *ktp, const char *line, size_t len,
- void *user_data);
- static bool_t stderr_cb(ktp_session_t *ktp, const char *line, size_t len,
- void *user_data);
- static bool_t auth_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata);
- static bool_t cmd_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata);
- static bool_t cmd_incompleted_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata);
- static bool_t completion_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata);
- static bool_t help_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata);
- // Eloop callbacks
- //static bool_t stop_loop_ev(faux_eloop_t *eloop, faux_eloop_type_e type,
- // void *associated_data, void *user_data);
- static bool_t stdin_cb(faux_eloop_t *eloop, faux_eloop_type_e type,
- void *associated_data, void *user_data);
- static bool_t sigwinch_cb(faux_eloop_t *eloop, faux_eloop_type_e type,
- void *associated_data, void *user_data);
- static bool_t ctrl_c_cb(faux_eloop_t *eloop, faux_eloop_type_e type,
- void *associated_data, void *user_data);
- // Service functions
- static void reset_hotkey_table(ctx_t *ctx);
- static bool_t send_winch_notification(ctx_t *ctx);
- static bool_t send_next_command(ctx_t *ctx);
- static void signal_handler_empty(int signo);
- // Keys
- static bool_t tinyrl_key_enter(tinyrl_t *tinyrl, unsigned char key);
- static bool_t tinyrl_key_tab(tinyrl_t *tinyrl, unsigned char key);
- static bool_t tinyrl_key_help(tinyrl_t *tinyrl, unsigned char key);
- static bool_t tinyrl_key_hotkey(tinyrl_t *tinyrl, unsigned char key);
- int main(int argc, char **argv)
- {
- int retval = -1;
- struct options *opts = NULL;
- int unix_sock = -1;
- ktp_session_t *ktp = NULL;
- int retcode = 0;
- faux_eloop_t *eloop = NULL;
- ctx_t ctx = {};
- tinyrl_t *tinyrl = NULL;
- char *hist_path = NULL;
- int stdin_flags = 0;
- struct sigaction sig_act = {};
- sigset_t sig_set = {};
- #ifdef HAVE_LOCALE_H
- // Set current locale
- setlocale(LC_ALL, "");
- #endif
- // Parse command line options
- opts = opts_init();
- if (opts_parse(argc, argv, opts)) {
- fprintf(stderr, "Error: Can't parse command line options\n");
- goto err;
- }
- // Parse config file
- if (!access(opts->cfgfile, R_OK)) {
- if (!config_parse(opts->cfgfile, opts))
- goto err;
- } else if (opts->cfgfile_userdefined) {
- // User defined config must be found
- fprintf(stderr, "Error: Can't find config file %s\n",
- opts->cfgfile);
- goto err;
- }
- // Init context
- faux_bzero(&ctx, sizeof(ctx));
- // Find out client mode
- ctx.mode = MODE_INTERACTIVE; // Default
- if (faux_list_len(opts->commands) > 0)
- ctx.mode = MODE_CMDLINE;
- else if (faux_list_len(opts->files) > 0)
- ctx.mode = MODE_FILES;
- else if (!isatty(STDIN_FILENO))
- ctx.mode = MODE_STDIN;
- // Connect to server
- unix_sock = ktp_connect_unix(opts->unix_socket_path);
- if (unix_sock < 0) {
- fprintf(stderr, "Error: Can't connect to server\n");
- goto err;
- }
- // Eloop object
- eloop = faux_eloop_new(NULL);
- // Handlers are used to send SIGINT
- // to non-interactive commands
- faux_eloop_add_signal(eloop, SIGINT, ctrl_c_cb, &ctx);
- faux_eloop_add_signal(eloop, SIGTERM, ctrl_c_cb, &ctx);
- faux_eloop_add_signal(eloop, SIGQUIT, ctrl_c_cb, &ctx);
- // To don't stop klish client on exit. SIGTSTP can be pended
- faux_eloop_add_signal(eloop, SIGTSTP, ctrl_c_cb, &ctx);
- // Notify server about terminal window size change
- faux_eloop_add_signal(eloop, SIGWINCH, sigwinch_cb, &ctx);
- // Ignore SIGINT etc. Don't use SIG_IGN because it will
- // not interrupt syscall. It necessary because in MODE_STDIN
- // there is a blocking read and eloop doesn't process signals
- // while blocking read
- sigemptyset(&sig_set);
- sig_act.sa_flags = 0;
- sig_act.sa_mask = sig_set;
- sig_act.sa_handler = &signal_handler_empty;
- sigaction(SIGINT, &sig_act, NULL);
- sigaction(SIGTERM, &sig_act, NULL);
- sigaction(SIGQUIT, &sig_act, NULL);
- // Ignore SIGPIPE from server. Don't use SIG_IGN because it will not
- // break syscall
- sigaction(SIGPIPE, &sig_act, NULL);
- // KTP session
- ktp = ktp_session_new(unix_sock, eloop);
- assert(ktp);
- if (!ktp) {
- fprintf(stderr, "Error: Can't create klish session\n");
- goto err;
- }
- // Don't stop loop on each answer
- ktp_session_set_stop_on_answer(ktp, BOOL_FALSE);
- // Set stdin to O_NONBLOCK mode
- stdin_flags = fcntl(STDIN_FILENO, F_GETFL, 0);
- if (ctx.mode != MODE_STDIN)
- fcntl(STDIN_FILENO, F_SETFL, stdin_flags | O_NONBLOCK);
- // TiniRL
- if (ctx.mode == MODE_INTERACTIVE)
- hist_path = faux_expand_tilde("~/.klish_history");
- tinyrl = tinyrl_new(stdin, stdout, hist_path, 100);
- if (ctx.mode == MODE_INTERACTIVE)
- faux_str_free(hist_path);
- tinyrl_set_prompt(tinyrl, "$ ");
- tinyrl_set_udata(tinyrl, &ctx);
- // Populate context
- ctx.ktp = ktp;
- ctx.tinyrl = tinyrl;
- ctx.opts = opts;
- ctx.pager_working = TRI_UNDEFINED;
- ktp_session_set_cb(ktp, KTP_SESSION_CB_STDOUT, stdout_cb, &ctx);
- ktp_session_set_cb(ktp, KTP_SESSION_CB_STDERR, stderr_cb, &ctx);
- ktp_session_set_cb(ktp, KTP_SESSION_CB_AUTH_ACK, auth_ack_cb, &ctx);
- ktp_session_set_cb(ktp, KTP_SESSION_CB_CMD_ACK, cmd_ack_cb, &ctx);
- ktp_session_set_cb(ktp, KTP_SESSION_CB_CMD_ACK_INCOMPLETED,
- cmd_incompleted_ack_cb, &ctx);
- ktp_session_set_cb(ktp, KTP_SESSION_CB_COMPLETION_ACK,
- completion_ack_cb, &ctx);
- ktp_session_set_cb(ktp, KTP_SESSION_CB_HELP_ACK, help_ack_cb, &ctx);
- // Commands from cmdline
- if (ctx.mode == MODE_CMDLINE) {
- // "-c" options iterator
- ctx.cmdline_iter = faux_list_head(opts->commands);
- // Commands from files
- } else if (ctx.mode == MODE_FILES) {
- // input files iterator
- ctx.files_iter = faux_list_head(opts->files);
- // Commands from non-interactive STDIN
- } else if (ctx.mode == MODE_STDIN) {
- // Interactive shell
- } else {
- // Interactive keys
- tinyrl_set_hotkey_fn(tinyrl, tinyrl_key_hotkey);
- tinyrl_bind_key(tinyrl, '\n', tinyrl_key_enter);
- tinyrl_bind_key(tinyrl, '\r', tinyrl_key_enter);
- tinyrl_bind_key(tinyrl, '\t', tinyrl_key_tab);
- tinyrl_bind_key(tinyrl, '?', tinyrl_key_help);
- faux_eloop_add_fd(eloop, STDIN_FILENO, POLLIN, stdin_cb, &ctx);
- }
- // Send AUTH message to server
- if (!ktp_session_auth(ktp, NULL))
- goto err;
- // Main loop
- faux_eloop_loop(eloop);
- retval = 0;
- err:
- // Restore stdin mode
- fcntl(STDIN_FILENO, F_SETFL, stdin_flags);
- reset_hotkey_table(&ctx);
- if (tinyrl) {
- if (tinyrl_busy(tinyrl))
- faux_error_free(ktp_session_error(ktp));
- tinyrl_free(tinyrl);
- }
- ktp_session_free(ktp);
- faux_eloop_free(eloop);
- ktp_disconnect(unix_sock);
- opts_free(opts);
- if ((retval < 0) || (retcode != 0))
- return -1;
- return 0;
- }
- static bool_t send_next_command(ctx_t *ctx)
- {
- char *line = NULL;
- faux_error_t *error = NULL;
- bool_t rc = BOOL_FALSE;
- // User must type next interactive command. So just return
- if (ctx->mode == MODE_INTERACTIVE)
- return BOOL_TRUE;
- // Commands from cmdline
- if (ctx->mode == MODE_CMDLINE) {
- line = faux_str_dup(faux_list_each(&ctx->cmdline_iter));
- // Commands from input files
- } else if (ctx->mode == MODE_FILES) {
- do {
- if (!ctx->files_fd) {
- const char *fn = (const char *)faux_list_each(&ctx->files_iter);
- if (!fn)
- break; // No more files
- ctx->files_fd = faux_file_open(fn, O_RDONLY, 0);
- }
- if (!ctx->files_fd) // Can't open file. Try next file
- continue;
- line = faux_file_getline(ctx->files_fd);
- if (!line) { // EOF
- faux_file_close(ctx->files_fd);
- ctx->files_fd = NULL;
- }
- } while (!line);
- // Commands from stdin
- } else if (ctx->mode == MODE_STDIN) {
- if (!ctx->stdin_fd)
- ctx->stdin_fd = faux_file_fdopen(STDIN_FILENO);
- if (ctx->stdin_fd)
- line = faux_file_getline(ctx->stdin_fd);
- if (!line) // EOF
- faux_file_close(ctx->stdin_fd);
- }
- if (!line) {
- ktp_session_set_done(ctx->ktp, BOOL_TRUE);
- return BOOL_TRUE;
- }
- if (ctx->opts->verbose) {
- const char *prompt = tinyrl_prompt(ctx->tinyrl);
- printf("%s%s\n", prompt ? prompt : "", line);
- fflush(stdout);
- }
- error = faux_error_new();
- rc = ktp_session_cmd(ctx->ktp, line, error, ctx->opts->dry_run);
- faux_str_free(line);
- if (!rc) {
- faux_error_free(error);
- return BOOL_FALSE;
- }
- // Suppose non-interactive command by default
- tinyrl_enable_isig(ctx->tinyrl);
- return BOOL_TRUE;
- }
- static bool_t stderr_cb(ktp_session_t *ktp, const char *line, size_t len,
- void *user_data)
- {
- if (faux_write_block(STDERR_FILENO, line, len) < 0)
- return BOOL_FALSE;
- ktp = ktp;
- user_data = user_data;
- return BOOL_TRUE;
- }
- static bool_t process_prompt_param(tinyrl_t *tinyrl, const faux_msg_t *msg)
- {
- char *prompt = NULL;
- if (!tinyrl)
- return BOOL_FALSE;
- if (!msg)
- return BOOL_FALSE;
- prompt = faux_msg_get_str_param_by_type(msg, KTP_PARAM_PROMPT);
- if (prompt) {
- tinyrl_set_prompt(tinyrl, prompt);
- faux_str_free(prompt);
- }
- return BOOL_TRUE;
- }
- static void reset_hotkey_table(ctx_t *ctx)
- {
- size_t i = 0;
- assert(ctx);
- for (i = 0; i < VT100_HOTKEY_MAP_LEN; i++)
- faux_str_free(ctx->hotkeys[i]);
- faux_bzero(ctx->hotkeys, sizeof(ctx->hotkeys));
- }
- static bool_t process_hotkey_param(ctx_t *ctx, const faux_msg_t *msg)
- {
- faux_list_node_t *iter = NULL;
- uint32_t param_len = 0;
- char *param_data = NULL;
- uint16_t param_type = 0;
- if (!ctx)
- return BOOL_FALSE;
- if (!msg)
- return BOOL_FALSE;
- if (!faux_msg_get_param_by_type(msg, KTP_PARAM_HOTKEY,
- (void **)¶m_data, ¶m_len))
- return BOOL_TRUE;
- // If there is HOTKEY parameter then reinitialize whole hotkey table
- reset_hotkey_table(ctx);
- iter = faux_msg_init_param_iter(msg);
- while (faux_msg_get_param_each(
- &iter, ¶m_type, (void **)¶m_data, ¶m_len)) {
- char *cmd = NULL;
- ssize_t code = -1;
- size_t key_len = 0;
- if (param_len < 3) // <key>'\0'<cmd>
- continue;
- if (KTP_PARAM_HOTKEY != param_type)
- continue;
- key_len = strlen(param_data); // Length of <key>
- if (key_len < 1)
- continue;
- code = vt100_hotkey_decode(param_data);
- if ((code < 0) || (code > VT100_HOTKEY_MAP_LEN))
- continue;
- cmd = faux_str_dupn(param_data + key_len + 1,
- param_len - key_len - 1);
- if (!cmd)
- continue;
- ctx->hotkeys[code] = cmd;
- }
- return BOOL_TRUE;
- }
- bool_t auth_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- int rc = -1;
- faux_error_t *error = NULL;
- process_prompt_param(ctx->tinyrl, msg);
- process_hotkey_param(ctx, msg);
- if (!ktp_session_retcode(ktp, &rc))
- rc = -1;
- error = ktp_session_error(ktp);
- if ((rc < 0) && (faux_error_len(error) > 0)) {
- faux_error_node_t *err_iter = faux_error_iter(error);
- const char *err = NULL;
- while ((err = faux_error_each(&err_iter)))
- fprintf(stderr, "Error: auth: %s\n", err);
- return BOOL_FALSE;
- }
- send_winch_notification(ctx);
- if (ctx->mode == MODE_INTERACTIVE) {
- // Print prompt for interactive command
- tinyrl_redisplay(ctx->tinyrl);
- } else {
- // Send first command for non-interactive modes
- send_next_command(ctx);
- }
- // Happy compiler
- msg = msg;
- return BOOL_TRUE;
- }
- bool_t cmd_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- int rc = -1;
- faux_error_t *error = NULL;
- bool_t it_was_pager = BOOL_FALSE;
- // Wait for pager
- if (ctx->pager_working != TRI_UNDEFINED) {
- pclose(ctx->pager_pipe);
- ctx->pager_working = TRI_UNDEFINED;
- ctx->pager_pipe = NULL;
- it_was_pager = BOOL_TRUE;
- }
- // Disable SIGINT caught for non-interactive commands.
- // Do it after pager exit. Else it can restore wrong tty mode after
- // ISIG disabling
- tinyrl_disable_isig(ctx->tinyrl);
- // Sometimes output stream from server doesn't contain final crlf so
- // goto newline itself
- if (ktp_session_last_stream(ktp) == STDERR_FILENO) {
- if (ktp_session_stderr_need_newline(ktp))
- fprintf(stderr, "\n");
- } else {
- // Pager adds newline itself
- if (ktp_session_stdout_need_newline(ktp) && !it_was_pager)
- tinyrl_crlf(ctx->tinyrl);
- }
- process_prompt_param(ctx->tinyrl, msg);
- process_hotkey_param(ctx, msg);
- if (!ktp_session_retcode(ktp, &rc))
- rc = -1;
- error = ktp_session_error(ktp);
- if (rc < 0) {
- if (faux_error_len(error) > 0) {
- faux_error_node_t *err_iter = faux_error_iter(error);
- const char *err = NULL;
- while ((err = faux_error_each(&err_iter)))
- fprintf(stderr, "Error: %s\n", err);
- }
- // Stop-on-error
- if (ctx->opts->stop_on_error) {
- faux_error_free(error);
- ktp_session_set_done(ktp, BOOL_TRUE);
- return BOOL_TRUE;
- }
- }
- faux_error_free(error);
- if (ctx->mode == MODE_INTERACTIVE) {
- tinyrl_set_busy(ctx->tinyrl, BOOL_FALSE);
- if (!ktp_session_done(ktp))
- tinyrl_redisplay(ctx->tinyrl);
- // Operation is finished so restore stdin handler
- faux_eloop_add_fd(ktp_session_eloop(ktp), STDIN_FILENO, POLLIN,
- stdin_cb, ctx);
- }
- // Send next command for non-interactive modes
- send_next_command(ctx);
- // Happy compiler
- msg = msg;
- return BOOL_TRUE;
- }
- bool_t cmd_incompleted_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- // It can't get data from stdin, it gets commands from stdin instead.
- // So don't process incompleted ack but just return
- if (ctx->mode == MODE_STDIN)
- return BOOL_TRUE;
- if (ktp_session_state(ktp) == KTP_SESSION_STATE_WAIT_FOR_CMD) {
- // Cmd need stdin so restore stdin handler
- if (KTP_STATUS_IS_NEED_STDIN(ktp_session_cmd_features(ktp))) {
- // Disable SIGINT signal (it is used for commands that
- // don't need stdin. Commands with stdin can get ^C
- // themself interactively.)
- tinyrl_disable_isig(ctx->tinyrl);
- faux_eloop_add_fd(ktp_session_eloop(ktp), STDIN_FILENO, POLLIN,
- stdin_cb, ctx);
- }
- }
- // Happy compiler
- msg = msg;
- return BOOL_TRUE;
- }
- static bool_t stdin_cb(faux_eloop_t *eloop, faux_eloop_type_e type,
- void *associated_data, void *udata)
- {
- bool_t rc = BOOL_TRUE;
- ctx_t *ctx = (ctx_t *)udata;
- ktp_session_state_e state = KTP_SESSION_STATE_ERROR;
- faux_eloop_info_fd_t *info = (faux_eloop_info_fd_t *)associated_data;
- bool_t close_stdin = BOOL_FALSE;
- if (!ctx)
- return BOOL_FALSE;
- // Some errors or fd is closed so stop interactive session
- // Non-interactive session just removes stdin callback
- if (info->revents & (POLLHUP | POLLERR | POLLNVAL)) {
- if (ctx->mode == MODE_INTERACTIVE)
- rc = BOOL_FALSE;
- faux_eloop_del_fd(eloop, STDIN_FILENO);
- close_stdin = BOOL_TRUE;
- }
- state = ktp_session_state(ctx->ktp);
- // Standard klish command line
- if ((state == KTP_SESSION_STATE_IDLE) &&
- (ctx->mode == MODE_INTERACTIVE)) {
- tinyrl_read(ctx->tinyrl);
- // Command needs stdin
- } else if ((state == KTP_SESSION_STATE_WAIT_FOR_CMD) &&
- KTP_STATUS_IS_NEED_STDIN(ktp_session_cmd_features(ctx->ktp))) {
- int fd = fileno(tinyrl_istream(ctx->tinyrl));
- char buf[1024] = {};
- ssize_t bytes_readed = 0;
- while ((bytes_readed = read(fd, buf, sizeof(buf))) > 0) {
- ktp_session_stdin(ctx->ktp, buf, bytes_readed);
- if (bytes_readed != sizeof(buf))
- break;
- }
- if (close_stdin)
- ktp_session_stdin_close(ctx->ktp);
- // Input is not needed
- } else {
- // Here the situation when input is not allowed. Remove stdin from
- // eloop waiting list. Else klish will get 100% CPU. Callbacks on
- // operation completions will restore this handler.
- faux_eloop_del_fd(eloop, STDIN_FILENO);
- }
- // Happy compiler
- type = type;
- return rc;
- }
- static bool_t send_winch_notification(ctx_t *ctx)
- {
- size_t width = 0;
- size_t height = 0;
- char *winsize = NULL;
- faux_msg_t *req = NULL;
- ktp_status_e status = KTP_STATUS_NONE;
- if (!ctx->tinyrl)
- return BOOL_FALSE;
- if (!ctx->ktp)
- return BOOL_FALSE;
- tinyrl_winsize(ctx->tinyrl, &width, &height);
- winsize = faux_str_sprintf("%lu %lu", width, height);
- req = ktp_msg_preform(KTP_NOTIFICATION, status);
- faux_msg_add_param(req, KTP_PARAM_WINCH, winsize, strlen(winsize));
- faux_str_free(winsize);
- faux_msg_send_async(req, ktp_session_async(ctx->ktp));
- faux_msg_free(req);
- return BOOL_TRUE;
- }
- static bool_t sigwinch_cb(faux_eloop_t *eloop, faux_eloop_type_e type,
- void *associated_data, void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- if (!ctx)
- return BOOL_FALSE;
- send_winch_notification(ctx);
- // Happy compiler
- eloop = eloop;
- type = type;
- associated_data = associated_data;
- return BOOL_TRUE;
- }
- static bool_t ctrl_c_cb(faux_eloop_t *eloop, faux_eloop_type_e type,
- void *associated_data, void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- char ctrl_c = KEY_ETX;
- ktp_session_state_e state = KTP_SESSION_STATE_ERROR;
- if (!ctx)
- return BOOL_FALSE;
- if (ctx->mode != MODE_INTERACTIVE)
- return BOOL_FALSE;
- state = ktp_session_state(ctx->ktp);
- if (state == KTP_SESSION_STATE_WAIT_FOR_CMD)
- ktp_session_stdin(ctx->ktp, &ctrl_c, sizeof(ctrl_c));
- // Happy compiler
- eloop = eloop;
- type = type;
- associated_data = associated_data;
- return BOOL_TRUE;
- }
- static bool_t tinyrl_key_enter(tinyrl_t *tinyrl, unsigned char key)
- {
- const char *line = NULL;
- ctx_t *ctx = (ctx_t *)tinyrl_udata(tinyrl);
- faux_error_t *error = faux_error_new();
- tinyrl_line_to_hist(tinyrl);
- tinyrl_multi_crlf(tinyrl);
- tinyrl_reset_line_state(tinyrl);
- line = tinyrl_line(tinyrl);
- // Don't do anything on empty line
- if (faux_str_is_empty(line)) {
- faux_error_free(error);
- return BOOL_TRUE;
- }
- ktp_session_cmd(ctx->ktp, line, error, ctx->opts->dry_run);
- tinyrl_reset_line(tinyrl);
- tinyrl_set_busy(tinyrl, BOOL_TRUE);
- // Suppose non-interactive command by default
- // Caught SIGINT for non-interactive commands
- tinyrl_enable_isig(tinyrl);
- key = key; // Happy compiler
- return BOOL_TRUE;
- }
- static bool_t tinyrl_key_hotkey(tinyrl_t *tinyrl, unsigned char key)
- {
- const char *line = NULL;
- ctx_t *ctx = (ctx_t *)tinyrl_udata(tinyrl);
- faux_error_t *error = NULL;
- if (key >= VT100_HOTKEY_MAP_LEN)
- return BOOL_TRUE;
- line = ctx->hotkeys[key];
- if (faux_str_is_empty(line))
- return BOOL_TRUE;
- error = faux_error_new();
- tinyrl_multi_crlf(tinyrl);
- tinyrl_reset_line_state(tinyrl);
- tinyrl_reset_line(tinyrl);
- ktp_session_cmd(ctx->ktp, line, error, ctx->opts->dry_run);
- tinyrl_set_busy(tinyrl, BOOL_TRUE);
- return BOOL_TRUE;
- }
- static bool_t tinyrl_key_tab(tinyrl_t *tinyrl, unsigned char key)
- {
- char *line = NULL;
- ctx_t *ctx = (ctx_t *)tinyrl_udata(tinyrl);
- line = tinyrl_line_to_pos(tinyrl);
- ktp_session_completion(ctx->ktp, line, ctx->opts->dry_run);
- faux_str_free(line);
- tinyrl_set_busy(tinyrl, BOOL_TRUE);
- key = key; // Happy compiler
- return BOOL_TRUE;
- }
- static bool_t tinyrl_key_help(tinyrl_t *tinyrl, unsigned char key)
- {
- char *line = NULL;
- ctx_t *ctx = (ctx_t *)tinyrl_udata(tinyrl);
- line = tinyrl_line_to_pos(tinyrl);
- // If "?" is quoted then it's not special hotkey.
- // Just insert it into the line.
- if (faux_str_unclosed_quotes(line, NULL)) {
- faux_str_free(line);
- return tinyrl_key_default(tinyrl, key);
- }
- ktp_session_help(ctx->ktp, line);
- faux_str_free(line);
- tinyrl_set_busy(tinyrl, BOOL_TRUE);
- key = key; // Happy compiler
- return BOOL_TRUE;
- }
- static void display_completions(const tinyrl_t *tinyrl, faux_list_t *completions,
- const char *prefix, size_t max)
- {
- size_t width = tinyrl_width(tinyrl);
- size_t cols = 0;
- faux_list_node_t *iter = NULL;
- faux_list_node_t *node = NULL;
- size_t prefix_len = 0;
- size_t cols_filled = 0;
- if (prefix)
- prefix_len = strlen(prefix);
- // Find out column and rows number
- if (max < width)
- cols = (width + 1) / (prefix_len + max + 1); // For a space between words
- else
- cols = 1;
- iter = faux_list_head(completions);
- while ((node = faux_list_each_node(&iter))) {
- char *compl = (char *)faux_list_data(node);
- tinyrl_printf(tinyrl, "%*s%s",
- (prefix_len + max + 1 - strlen(compl)),
- prefix ? prefix : "",
- compl);
- cols_filled++;
- if ((cols_filled >= cols) || (node == faux_list_tail(completions))) {
- cols_filled = 0;
- tinyrl_crlf(tinyrl);
- }
- }
- }
- bool_t completion_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- faux_list_node_t *iter = NULL;
- uint32_t param_len = 0;
- char *param_data = NULL;
- uint16_t param_type = 0;
- char *prefix = NULL;
- faux_list_t *completions = NULL;
- size_t completions_num = 0;
- size_t max_compl_len = 0;
- tinyrl_set_busy(ctx->tinyrl, BOOL_FALSE);
- process_prompt_param(ctx->tinyrl, msg);
- prefix = faux_msg_get_str_param_by_type(msg, KTP_PARAM_PREFIX);
- completions = faux_list_new(FAUX_LIST_UNSORTED, FAUX_LIST_NONUNIQUE,
- NULL, NULL, (void (*)(void *))faux_str_free);
- iter = faux_msg_init_param_iter(msg);
- while (faux_msg_get_param_each(&iter, ¶m_type, (void **)¶m_data, ¶m_len)) {
- char *compl = NULL;
- if (KTP_PARAM_LINE != param_type)
- continue;
- compl = faux_str_dupn(param_data, param_len);
- faux_list_add(completions, compl);
- if (param_len > max_compl_len)
- max_compl_len = param_len;
- }
- completions_num = faux_list_len(completions);
- // Single possible completion
- if (1 == completions_num) {
- char *compl = (char *)faux_list_data(faux_list_head(completions));
- tinyrl_line_insert(ctx->tinyrl, compl, strlen(compl));
- // Add space after completion
- tinyrl_line_insert(ctx->tinyrl, " ", 1);
- tinyrl_redisplay(ctx->tinyrl);
- // Multi possible completions
- } else if (completions_num > 1) {
- faux_list_node_t *eq_iter = NULL;
- size_t eq_part = 0;
- char *str = NULL;
- char *compl = NULL;
- // Try to find equal part for all possible completions
- eq_iter = faux_list_head(completions);
- str = (char *)faux_list_data(eq_iter);
- eq_part = strlen(str);
- eq_iter = faux_list_next_node(eq_iter);
- while ((compl = (char *)faux_list_each(&eq_iter)) && (eq_part > 0)) {
- size_t cur_eq = 0;
- cur_eq = tinyrl_equal_part(ctx->tinyrl, str, compl);
- if (cur_eq < eq_part)
- eq_part = cur_eq;
- }
- // The equal part was found
- if (eq_part > 0) {
- tinyrl_line_insert(ctx->tinyrl, str, eq_part);
- tinyrl_redisplay(ctx->tinyrl);
- // There is no equal part for all completions
- } else {
- tinyrl_multi_crlf(ctx->tinyrl);
- tinyrl_reset_line_state(ctx->tinyrl);
- display_completions(ctx->tinyrl, completions,
- prefix, max_compl_len);
- tinyrl_redisplay(ctx->tinyrl);
- }
- }
- faux_list_free(completions);
- faux_str_free(prefix);
- // Operation is finished so restore stdin handler
- faux_eloop_add_fd(ktp_session_eloop(ktp), STDIN_FILENO, POLLIN,
- stdin_cb, ctx);
- // Happy compiler
- ktp = ktp;
- msg = msg;
- return BOOL_TRUE;
- }
- static void display_help(const tinyrl_t *tinyrl, faux_list_t *help_list,
- size_t max)
- {
- faux_list_node_t *iter = NULL;
- faux_list_node_t *node = NULL;
- iter = faux_list_head(help_list);
- while ((node = faux_list_each_node(&iter))) {
- help_t *help = (help_t *)faux_list_data(node);
- tinyrl_printf(tinyrl, " %s%*s%s\n",
- help->prefix,
- (max + 2 - strlen(help->prefix)),
- " ",
- help->line);
- }
- }
- bool_t help_ack_cb(ktp_session_t *ktp, const faux_msg_t *msg, void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- faux_list_t *help_list = NULL;
- faux_list_node_t *iter = NULL;
- uint32_t param_len = 0;
- char *param_data = NULL;
- uint16_t param_type = 0;
- size_t max_prefix_len = 0;
- tinyrl_set_busy(ctx->tinyrl, BOOL_FALSE);
- process_prompt_param(ctx->tinyrl, msg);
- help_list = faux_list_new(FAUX_LIST_SORTED, FAUX_LIST_UNIQUE,
- help_compare, NULL, help_free);
- // Wait for PREFIX - LINE pairs
- iter = faux_msg_init_param_iter(msg);
- while (faux_msg_get_param_each(&iter, ¶m_type, (void **)¶m_data,
- ¶m_len)) {
- char *prefix_str = NULL;
- char *line_str = NULL;
- help_t *help = NULL;
- size_t prefix_len = 0;
- // Get PREFIX
- if (KTP_PARAM_PREFIX != param_type)
- continue;
- prefix_str = faux_str_dupn(param_data, param_len);
- prefix_len = param_len;
- // Get LINE
- if (!faux_msg_get_param_each(&iter, ¶m_type,
- (void **)¶m_data, ¶m_len) ||
- (KTP_PARAM_LINE != param_type)) {
- faux_str_free(prefix_str);
- break;
- }
- line_str = faux_str_dupn(param_data, param_len);
- help = help_new(prefix_str, line_str);
- if (!faux_list_add(help_list, help)) {
- help_free(help);
- continue;
- }
- if (prefix_len > max_prefix_len)
- max_prefix_len = prefix_len;
- }
- if (faux_list_len(help_list) > 0) {
- tinyrl_multi_crlf(ctx->tinyrl);
- tinyrl_reset_line_state(ctx->tinyrl);
- display_help(ctx->tinyrl, help_list, max_prefix_len);
- tinyrl_redisplay(ctx->tinyrl);
- }
- faux_list_free(help_list);
- // Operation is finished so restore stdin handler
- faux_eloop_add_fd(ktp_session_eloop(ktp), STDIN_FILENO, POLLIN,
- stdin_cb, ctx);
- ktp = ktp; // happy compiler
- return BOOL_TRUE;
- }
- static bool_t stdout_cb(ktp_session_t *ktp, const char *line, size_t len,
- void *udata)
- {
- ctx_t *ctx = (ctx_t *)udata;
- assert(ctx);
- // Start pager if necessary
- if (
- ctx->opts->pager_enabled && // Pager enabled within config file
- (ctx->pager_working == TRI_UNDEFINED) && // Pager is not working
- !KTP_STATUS_IS_INTERACTIVE(ktp_session_cmd_features(ktp)) // Non interactive command
- ) {
- ctx->pager_pipe = popen(ctx->opts->pager, "we");
- if (!ctx->pager_pipe)
- ctx->pager_working = TRI_FALSE; // Indicates can't start
- else
- ctx->pager_working = TRI_TRUE;
- }
- // Write to pager's pipe if pager is really working
- // Don't do anything if pager state is TRI_FALSE
- if (ctx->pager_working == TRI_TRUE) {
- if (faux_write_block(fileno(ctx->pager_pipe), line, len) <= 0) {
- // If we can't write to pager pipe then send
- // "SIGPIPE" to server. Pager is finished or broken.
- ktp_session_stdout_close(ktp);
- ctx->pager_working = TRI_FALSE;
- return BOOL_TRUE; // Don't break the loop
- }
- // TRI_UNDEFINED here means that pager is not needed
- } else if (ctx->pager_working == TRI_UNDEFINED) {
- if (faux_write_block(STDOUT_FILENO, line, len) < 0)
- return BOOL_FALSE;
- }
- return BOOL_TRUE;
- }
- static void signal_handler_empty(int signo)
- {
- signo = signo; // Happy compiler
- }
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