1 /* $OpenBSD: cmd-run-shell.c,v 1.43 2016/11/12 19:05:53 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 static enum cmd_retval cmd_run_shell_exec(struct cmd *, struct cmdq_item *); 33 34 static void cmd_run_shell_callback(struct job *); 35 static void cmd_run_shell_free(void *); 36 static 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 cmdq_item *item; 54 int wp_id; 55 }; 56 57 static void 58 cmd_run_shell_print(struct job *job, const char *msg) 59 { 60 struct cmd_run_shell_data *cdata = job->data; 61 struct window_pane *wp = NULL; 62 struct cmd_find_state fs; 63 64 if (cdata->wp_id != -1) 65 wp = window_pane_find_by_id(cdata->wp_id); 66 if (wp == NULL) { 67 if (cdata->item != NULL) { 68 cmdq_print(cdata->item, "%s", msg); 69 return; 70 } 71 if (cmd_find_current (&fs, NULL, CMD_FIND_QUIET) != 0) 72 return; 73 wp = fs.wp; 74 if (wp == NULL) 75 return; 76 } 77 78 if (window_pane_set_mode(wp, &window_copy_mode) == 0) 79 window_copy_init_for_output(wp); 80 if (wp->mode == &window_copy_mode) 81 window_copy_add(wp, "%s", msg); 82 } 83 84 static enum cmd_retval 85 cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item) 86 { 87 struct args *args = self->args; 88 struct cmd_run_shell_data *cdata; 89 char *shellcmd; 90 struct session *s = item->state.tflag.s; 91 struct winlink *wl = item->state.tflag.wl; 92 struct window_pane *wp = item->state.tflag.wp; 93 struct format_tree *ft; 94 const char *cwd; 95 96 if (item->client != NULL && item->client->session == NULL) 97 cwd = item->client->cwd; 98 else if (s != NULL) 99 cwd = s->cwd; 100 else 101 cwd = NULL; 102 103 ft = format_create(item, 0); 104 format_defaults(ft, item->state.c, s, wl, wp); 105 shellcmd = format_expand(ft, args->argv[0]); 106 format_free(ft); 107 108 cdata = xcalloc(1, sizeof *cdata); 109 cdata->cmd = shellcmd; 110 111 if (args_has(args, 't') && wp != NULL) 112 cdata->wp_id = wp->id; 113 else 114 cdata->wp_id = -1; 115 116 if (!args_has(args, 'b')) 117 cdata->item = item; 118 119 job_run(shellcmd, s, cwd, cmd_run_shell_callback, cmd_run_shell_free, 120 cdata); 121 122 if (args_has(args, 'b')) 123 return (CMD_RETURN_NORMAL); 124 return (CMD_RETURN_WAIT); 125 } 126 127 static void 128 cmd_run_shell_callback(struct job *job) 129 { 130 struct cmd_run_shell_data *cdata = job->data; 131 char *cmd = cdata->cmd, *msg, *line; 132 size_t size; 133 int retcode; 134 u_int lines; 135 136 lines = 0; 137 do { 138 if ((line = evbuffer_readline(job->event->input)) != NULL) { 139 cmd_run_shell_print(job, line); 140 free(line); 141 lines++; 142 } 143 } while (line != NULL); 144 145 size = EVBUFFER_LENGTH(job->event->input); 146 if (size != 0) { 147 line = xmalloc(size + 1); 148 memcpy(line, EVBUFFER_DATA(job->event->input), size); 149 line[size] = '\0'; 150 151 cmd_run_shell_print(job, line); 152 lines++; 153 154 free(line); 155 } 156 157 msg = NULL; 158 if (WIFEXITED(job->status)) { 159 if ((retcode = WEXITSTATUS(job->status)) != 0) 160 xasprintf(&msg, "'%s' returned %d", cmd, retcode); 161 } else if (WIFSIGNALED(job->status)) { 162 retcode = WTERMSIG(job->status); 163 xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode); 164 } 165 if (msg != NULL) 166 cmd_run_shell_print(job, msg); 167 free(msg); 168 169 if (cdata->item != NULL) 170 cdata->item->flags &= ~CMDQ_WAITING; 171 } 172 173 static void 174 cmd_run_shell_free(void *data) 175 { 176 struct cmd_run_shell_data *cdata = data; 177 178 free(cdata->cmd); 179 free(cdata); 180 } 181