/* $OpenBSD$ */ /* * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <sys/types.h> #include <stdlib.h> #include <string.h> #include "tmux.h" /* * Show environment. */ enum cmd_retval cmd_show_environment_exec(struct cmd *, struct cmd_q *); char *cmd_show_environment_escape(struct environ_entry *); void cmd_show_environment_print(struct cmd *, struct cmd_q *, struct environ_entry *); const struct cmd_entry cmd_show_environment_entry = { "show-environment", "showenv", "gst:", 0, 1, "[-gs] " CMD_TARGET_SESSION_USAGE " [name]", 0, cmd_show_environment_exec }; char * cmd_show_environment_escape(struct environ_entry *envent) { const char *value = envent->value; char c, *out, *ret; out = ret = xmalloc(strlen(value) * 2 + 1); /* at most twice the size */ while ((c = *value++) != '\0') { /* POSIX interprets $ ` " and \ in double quotes. */ if (c == '$' || c == '`' || c == '"' || c == '\\') *out++ = '\\'; *out++ = c; } *out = '\0'; return ret; } void cmd_show_environment_print(struct cmd *self, struct cmd_q *cmdq, struct environ_entry *envent) { char *escaped; if (!args_has(self->args, 's')) { if (envent->value != NULL) cmdq_print(cmdq, "%s=%s", envent->name, envent->value); else cmdq_print(cmdq, "-%s", envent->name); return; } if (envent->value != NULL) { escaped = cmd_show_environment_escape(envent); cmdq_print(cmdq, "%s=\"%s\"; export %s;", envent->name, escaped, envent->name); free(escaped); } else cmdq_print(cmdq, "unset %s;", envent->name); } enum cmd_retval cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq) { struct args *args = self->args; struct session *s; struct environ *env; struct environ_entry *envent; if (args_has(self->args, 'g')) env = &global_environ; else { s = cmd_find_session(cmdq, args_get(args, 't'), 0); if (s == NULL) return (CMD_RETURN_ERROR); env = &s->environ; } if (args->argc != 0) { envent = environ_find(env, args->argv[0]); if (envent == NULL) { cmdq_error(cmdq, "unknown variable: %s", args->argv[0]); return (CMD_RETURN_ERROR); } cmd_show_environment_print(self, cmdq, envent); return (CMD_RETURN_NORMAL); } RB_FOREACH(envent, environ, env) cmd_show_environment_print(self, cmdq, envent); return (CMD_RETURN_NORMAL); }