1 /* $Id: cmd-if-shell.c,v 1.2 2013/10/20 03:00:02 christos 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 * Executes a tmux command if a shell command returns true. 29 */ 30 31 int cmd_if_shell_exec(struct cmd *, struct cmd_ctx *); 32 33 void cmd_if_shell_callback(struct job *); 34 void cmd_if_shell_free(void *); 35 36 const struct cmd_entry cmd_if_shell_entry = { 37 "if-shell", "if", 38 "", 2, 2, 39 "shell-command command", 40 0, 41 NULL, 42 NULL, 43 cmd_if_shell_exec 44 }; 45 46 struct cmd_if_shell_data { 47 char *cmd; 48 struct cmd_ctx ctx; 49 }; 50 51 int 52 cmd_if_shell_exec(struct cmd *self, struct cmd_ctx *ctx) 53 { 54 struct args *args = self->args; 55 struct cmd_if_shell_data *cdata; 56 const char *shellcmd = args->argv[0]; 57 58 cdata = xmalloc(sizeof *cdata); 59 cdata->cmd = xstrdup(args->argv[1]); 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_if_shell_callback, cmd_if_shell_free, cdata); 68 69 return (1); /* don't let client exit */ 70 } 71 72 void 73 cmd_if_shell_callback(struct job *job) 74 { 75 struct cmd_if_shell_data *cdata = job->data; 76 struct cmd_ctx *ctx = &cdata->ctx; 77 struct cmd_list *cmdlist; 78 char *cause; 79 80 if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0) 81 return; 82 83 if (cmd_string_parse(cdata->cmd, &cmdlist, &cause) != 0) { 84 if (cause != NULL) { 85 ctx->error(ctx, "%s", cause); 86 xfree(cause); 87 } 88 return; 89 } 90 91 cmd_list_exec(cmdlist, ctx); 92 cmd_list_free(cmdlist); 93 } 94 95 void 96 cmd_if_shell_free(void *data) 97 { 98 struct cmd_if_shell_data *cdata = data; 99 struct cmd_ctx *ctx = &cdata->ctx; 100 101 if (ctx->cmdclient != NULL) { 102 ctx->cmdclient->references--; 103 ctx->cmdclient->flags |= CLIENT_EXIT; 104 } 105 if (ctx->curclient != NULL) 106 ctx->curclient->references--; 107 108 xfree(cdata->cmd); 109 xfree(cdata); 110 } 111