1 /* $OpenBSD: cmd-run-shell.c,v 1.36 2016/02/12 12:24:52 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org> 5 * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 16 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 17 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/types.h> 21 #include <sys/wait.h> 22 23 #include <stdlib.h> 24 #include <string.h> 25 26 #include "tmux.h" 27 28 /* 29 * Runs a command without a window. 30 */ 31 32 enum cmd_retval cmd_run_shell_exec(struct cmd *, struct cmd_q *); 33 34 void cmd_run_shell_callback(struct job *); 35 void cmd_run_shell_free(void *); 36 void cmd_run_shell_print(struct job *, const char *); 37 38 const struct cmd_entry cmd_run_shell_entry = { 39 .name = "run-shell", 40 .alias = "run", 41 42 .args = { "bt:", 1, 1 }, 43 .usage = "[-b] " CMD_TARGET_PANE_USAGE " shell-command", 44 45 .tflag = CMD_PANE_CANFAIL, 46 47 .flags = 0, 48 .exec = cmd_run_shell_exec 49 }; 50 51 struct cmd_run_shell_data { 52 char *cmd; 53 struct cmd_q *cmdq; 54 int bflag; 55 int wp_id; 56 }; 57 58 void 59 cmd_run_shell_print(struct job *job, const char *msg) 60 { 61 struct cmd_run_shell_data *cdata = job->data; 62 struct window_pane *wp = NULL; 63 64 if (cdata->wp_id != -1) 65 wp = window_pane_find_by_id(cdata->wp_id); 66 if (wp == NULL) { 67 cmdq_print(cdata->cmdq, "%s", msg); 68 return; 69 } 70 71 if (window_pane_set_mode(wp, &window_copy_mode) == 0) 72 window_copy_init_for_output(wp); 73 if (wp->mode == &window_copy_mode) 74 window_copy_add(wp, "%s", msg); 75 } 76 77 enum cmd_retval 78 cmd_run_shell_exec(struct cmd *self, struct cmd_q *cmdq) 79 { 80 struct args *args = self->args; 81 struct cmd_run_shell_data *cdata; 82 char *shellcmd; 83 struct session *s = cmdq->state.tflag.s; 84 struct winlink *wl = cmdq->state.tflag.wl; 85 struct window_pane *wp = cmdq->state.tflag.wp; 86 struct format_tree *ft; 87 const char *cwd; 88 89 if (cmdq->client != NULL && cmdq->client->session == NULL) 90 cwd = cmdq->client->cwd; 91 else if (s != NULL) 92 cwd = s->cwd; 93 else 94 cwd = NULL; 95 ft = format_create(cmdq, 0); 96 format_defaults(ft, cmdq->state.c, s, wl, wp); 97 shellcmd = format_expand(ft, args->argv[0]); 98 format_free(ft); 99 100 cdata = xmalloc(sizeof *cdata); 101 cdata->cmd = shellcmd; 102 cdata->bflag = args_has(args, 'b'); 103 cdata->wp_id = wp != NULL ? (int) wp->id : -1; 104 105 cdata->cmdq = cmdq; 106 cmdq->references++; 107 108 job_run(shellcmd, s, cwd, cmd_run_shell_callback, cmd_run_shell_free, 109 cdata); 110 111 if (cdata->bflag) 112 return (CMD_RETURN_NORMAL); 113 return (CMD_RETURN_WAIT); 114 } 115 116 void 117 cmd_run_shell_callback(struct job *job) 118 { 119 struct cmd_run_shell_data *cdata = job->data; 120 struct cmd_q *cmdq = cdata->cmdq; 121 char *cmd, *msg, *line; 122 size_t size; 123 int retcode; 124 u_int lines; 125 126 if (cmdq->flags & CMD_Q_DEAD) 127 return; 128 cmd = cdata->cmd; 129 130 lines = 0; 131 do { 132 if ((line = evbuffer_readline(job->event->input)) != NULL) { 133 cmd_run_shell_print(job, line); 134 free(line); 135 lines++; 136 } 137 } while (line != NULL); 138 139 size = EVBUFFER_LENGTH(job->event->input); 140 if (size != 0) { 141 line = xmalloc(size + 1); 142 memcpy(line, EVBUFFER_DATA(job->event->input), size); 143 line[size] = '\0'; 144 145 cmd_run_shell_print(job, line); 146 lines++; 147 148 free(line); 149 } 150 151 msg = NULL; 152 if (WIFEXITED(job->status)) { 153 if ((retcode = WEXITSTATUS(job->status)) != 0) 154 xasprintf(&msg, "'%s' returned %d", cmd, retcode); 155 } else if (WIFSIGNALED(job->status)) { 156 retcode = WTERMSIG(job->status); 157 xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode); 158 } 159 if (msg != NULL) 160 cmd_run_shell_print(job, msg); 161 free(msg); 162 } 163 164 void 165 cmd_run_shell_free(void *data) 166 { 167 struct cmd_run_shell_data *cdata = data; 168 struct cmd_q *cmdq = cdata->cmdq; 169 170 if (!cmdq_free(cmdq) && !cdata->bflag) 171 cmdq_continue(cmdq); 172 173 free(cdata->cmd); 174 free(cdata); 175 } 176