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a2b8506917
GitHub issue 2822.
210 lines
5.2 KiB
C
210 lines
5.2 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
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* Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Executes a tmux command if a shell command returns true or false.
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*/
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static enum cmd_retval cmd_if_shell_exec(struct cmd *, struct cmdq_item *);
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static void cmd_if_shell_callback(struct job *);
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static void cmd_if_shell_free(void *);
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const struct cmd_entry cmd_if_shell_entry = {
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.name = "if-shell",
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.alias = "if",
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.args = { "bFt:", 2, 3 },
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.usage = "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command "
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"[command]",
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.target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
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.flags = 0,
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.exec = cmd_if_shell_exec
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};
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struct cmd_if_shell_data {
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struct cmd_parse_input input;
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char *cmd_if;
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char *cmd_else;
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struct client *client;
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struct cmdq_item *item;
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};
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static enum cmd_retval
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cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
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{
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struct args *args = cmd_get_args(self);
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struct cmd_find_state *target = cmdq_get_target(item);
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struct cmdq_state *state = cmdq_get_state(item);
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struct cmd_if_shell_data *cdata;
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char *shellcmd, *cmd, *error;
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const char *file;
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struct client *tc = cmdq_get_target_client(item);
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struct session *s = target->s;
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struct cmd_parse_input pi;
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enum cmd_parse_status status;
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shellcmd = format_single_from_target(item, args->argv[0]);
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if (args_has(args, 'F')) {
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if (*shellcmd != '0' && *shellcmd != '\0')
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cmd = args->argv[1];
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else if (args->argc == 3)
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cmd = args->argv[2];
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else
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cmd = NULL;
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free(shellcmd);
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if (cmd == NULL)
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return (CMD_RETURN_NORMAL);
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memset(&pi, 0, sizeof pi);
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cmd_get_source(self, &pi.file, &pi.line);
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pi.item = item;
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pi.c = tc;
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cmd_find_copy_state(&pi.fs, target);
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status = cmd_parse_and_insert(cmd, &pi, item, state, &error);
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if (status == CMD_PARSE_ERROR) {
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cmdq_error(item, "%s", error);
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free(error);
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return (CMD_RETURN_ERROR);
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}
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return (CMD_RETURN_NORMAL);
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}
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cdata = xcalloc(1, sizeof *cdata);
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cdata->cmd_if = xstrdup(args->argv[1]);
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if (args->argc == 3)
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cdata->cmd_else = xstrdup(args->argv[2]);
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if (!args_has(args, 'b'))
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cdata->client = cmdq_get_client(item);
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else
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cdata->client = tc;
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if (cdata->client != NULL)
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cdata->client->references++;
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if (!args_has(args, 'b'))
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cdata->item = item;
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cmd_get_source(self, &file, &cdata->input.line);
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if (file != NULL)
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cdata->input.file = xstrdup(file);
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cdata->input.c = tc;
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if (cdata->input.c != NULL)
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cdata->input.c->references++;
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cmd_find_copy_state(&cdata->input.fs, target);
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if (job_run(shellcmd, 0, NULL, s,
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server_client_get_cwd(cmdq_get_client(item), s), NULL,
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cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
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-1) == NULL) {
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cmdq_error(item, "failed to run command: %s", shellcmd);
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free(shellcmd);
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free(cdata);
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return (CMD_RETURN_ERROR);
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}
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free(shellcmd);
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if (args_has(args, 'b'))
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return (CMD_RETURN_NORMAL);
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return (CMD_RETURN_WAIT);
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}
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static void
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cmd_if_shell_callback(struct job *job)
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{
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struct cmd_if_shell_data *cdata = job_get_data(job);
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struct client *c = cdata->client;
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struct cmdq_item *new_item = NULL;
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struct cmdq_state *new_state = NULL;
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char *cmd;
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int status;
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struct cmd_parse_result *pr;
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status = job_get_status(job);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
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cmd = cdata->cmd_else;
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else
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cmd = cdata->cmd_if;
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if (cmd == NULL)
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goto out;
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pr = cmd_parse_from_string(cmd, &cdata->input);
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switch (pr->status) {
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case CMD_PARSE_EMPTY:
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break;
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case CMD_PARSE_ERROR:
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if (cdata->item != NULL)
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cmdq_error(cdata->item, "%s", pr->error);
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free(pr->error);
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break;
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case CMD_PARSE_SUCCESS:
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if (cdata->item == NULL)
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new_state = cmdq_new_state(NULL, NULL, 0);
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else
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new_state = cmdq_get_state(cdata->item);
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new_item = cmdq_get_command(pr->cmdlist, new_state);
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if (cdata->item == NULL)
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cmdq_free_state(new_state);
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cmd_list_free(pr->cmdlist);
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break;
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}
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if (new_item != NULL) {
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if (cdata->item == NULL)
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cmdq_append(c, new_item);
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else
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cmdq_insert_after(cdata->item, new_item);
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}
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out:
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if (cdata->item != NULL)
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cmdq_continue(cdata->item);
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}
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static void
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cmd_if_shell_free(void *data)
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{
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struct cmd_if_shell_data *cdata = data;
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if (cdata->client != NULL)
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server_client_unref(cdata->client);
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free(cdata->cmd_else);
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free(cdata->cmd_if);
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if (cdata->input.c != NULL)
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server_client_unref(cdata->input.c);
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free((void *)cdata->input.file);
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free(cdata);
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}
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