1 /* $Id: cmd-run-shell.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv 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 <string.h> 24 25 #include "tmux.h" 26 27 /* 28 * Runs a command without a window. 29 */ 30 31 int cmd_run_shell_exec(struct cmd *, struct cmd_ctx *); 32 33 void cmd_run_shell_callback(struct job *); 34 void cmd_run_shell_free(void *); 35 36 const struct cmd_entry cmd_run_shell_entry = { 37 "run-shell", "run", 38 "", 1, 1, 39 "command", 40 0, 41 NULL, 42 NULL, 43 cmd_run_shell_exec 44 }; 45 46 struct cmd_run_shell_data { 47 char *cmd; 48 struct cmd_ctx ctx; 49 }; 50 51 int 52 cmd_run_shell_exec(struct cmd *self, struct cmd_ctx *ctx) 53 { 54 struct args *args = self->args; 55 struct cmd_run_shell_data *cdata; 56 const char *shellcmd = args->argv[0]; 57 58 cdata = xmalloc(sizeof *cdata); 59 cdata->cmd = xstrdup(args->argv[0]); 60 memcpy(&cdata->ctx, ctx, sizeof cdata->ctx); 61 62 if (ctx->cmdclient != NULL) 63 ctx->cmdclient->references++; 64 if (ctx->curclient != NULL) 65 ctx->curclient->references++; 66 67 job_run(shellcmd, cmd_run_shell_callback, cmd_run_shell_free, cdata); 68 69 return (1); /* don't let client exit */ 70 } 71 72 void 73 cmd_run_shell_callback(struct job *job) 74 { 75 struct cmd_run_shell_data *cdata = job->data; 76 struct cmd_ctx *ctx = &cdata->ctx; 77 char *cmd, *msg, *line; 78 size_t size; 79 int retcode; 80 u_int lines; 81 82 if (ctx->cmdclient != NULL && ctx->cmdclient->flags & CLIENT_DEAD) 83 return; 84 if (ctx->curclient != NULL && ctx->curclient->flags & CLIENT_DEAD) 85 return; 86 87 lines = 0; 88 do { 89 if ((line = evbuffer_readline(job->event->input)) != NULL) { 90 ctx->print(ctx, "%s", line); 91 lines++; 92 } 93 } while (line != NULL); 94 95 size = EVBUFFER_LENGTH(job->event->input); 96 if (size != 0) { 97 line = xmalloc(size + 1); 98 memcpy(line, EVBUFFER_DATA(job->event->input), size); 99 line[size] = '\0'; 100 101 ctx->print(ctx, "%s", line); 102 lines++; 103 104 xfree(line); 105 } 106 107 cmd = cdata->cmd; 108 109 msg = NULL; 110 if (WIFEXITED(job->status)) { 111 if ((retcode = WEXITSTATUS(job->status)) != 0) 112 xasprintf(&msg, "'%s' returned %d", cmd, retcode); 113 } else if (WIFSIGNALED(job->status)) { 114 retcode = WTERMSIG(job->status); 115 xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode); 116 } 117 if (msg != NULL) { 118 if (lines != 0) 119 ctx->print(ctx, "%s", msg); 120 else 121 ctx->info(ctx, "%s", msg); 122 xfree(msg); 123 } 124 } 125 126 void 127 cmd_run_shell_free(void *data) 128 { 129 struct cmd_run_shell_data *cdata = data; 130 struct cmd_ctx *ctx = &cdata->ctx; 131 132 if (ctx->cmdclient != NULL) { 133 ctx->cmdclient->references--; 134 ctx->cmdclient->flags |= CLIENT_EXIT; 135 } 136 if (ctx->curclient != NULL) 137 ctx->curclient->references--; 138 139 xfree(cdata->cmd); 140 xfree(cdata); 141 } 142