This changes the way environment variables are handled:
- a new session populates the local environment from the current
client/session/server process (in case the config creates a session)
- the global environment is empty by default
- variables in the global environment override variables in the local
environment
---
I'm not sure what all the existing use cases are and which ones may
break from this change.
One thing I can think of is the config file parsing wrt to environment
variable expansion. I guess we could use the environment variables the
server inherited when it was started?
---
cfg.c | 2 +-
cmd-command-prompt.c | 3 ++-
cmd-confirm-before.c | 3 ++-
cmd-if-shell.c | 3 ++-
cmd-new-session.c | 15 ++++++++++-----
cmd-respawn-pane.c | 2 +-
cmd-respawn-window.c | 2 +-
cmd-split-window.c | 2 +-
cmd-string.c | 30 +++++++++++++++++-------------
control.c | 3 ++-
job.c | 2 +-
session.c | 2 +-
tmux.c | 4 ----
tmux.h | 4 ++--
window-choose.c | 3 ++-
15 files changed, 45 insertions(+), 35 deletions(-)
diff --git a/cfg.c b/cfg.c
index 1153de6..34a49e2 100644
--- a/cfg.c
+++ b/cfg.c
@@ -91,7 +91,7 @@ load_cfg(const char *path, struct cmd_q *cmdq, char **cause)
}
/* Parse and run the command. */
- if (cmd_string_parse(buf, &cmdlist, path, n, &cause1) != 0) {
+ if (cmd_string_parse(NULL, buf, &cmdlist, path, n, &cause1) !=
0) {
free(copy);
if (cause1 == NULL)
continue;
diff --git a/cmd-command-prompt.c b/cmd-command-prompt.c
index 759d578..8c1393c 100644
--- a/cmd-command-prompt.c
+++ b/cmd-command-prompt.c
@@ -172,7 +172,8 @@ cmd_command_prompt_callback(void *data, const char *s)
return (1);
}
- if (cmd_string_parse(new_template, &cmdlist, NULL, 0, &cause) != 0) {
+ if (cmd_string_parse(&c->session->environ, new_template, &cmdlist,
+ NULL, 0, &cause) != 0) {
if (cause != NULL) {
*cause = toupper((u_char) *cause);
status_message_set(c, "%s", cause);
diff --git a/cmd-confirm-before.c b/cmd-confirm-before.c
index 9266721..691810f 100644
--- a/cmd-confirm-before.c
+++ b/cmd-confirm-before.c
@@ -115,7 +115,8 @@ cmd_confirm_before_callback(void *data, const char *s)
if (tolower((u_char) s[0]) != 'y' || s[1] != '\0')
return (0);
- if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) {
+ if (cmd_string_parse(&c->session->environ, cdata->cmd, &cmdlist, NULL,
+ 0, &cause) != 0) {
if (cause != NULL) {
cmdq_error(c->cmdq, "%s", cause);
free(cause);
diff --git a/cmd-if-shell.c b/cmd-if-shell.c
index 9b6dcf3..e79c0c4 100644
--- a/cmd-if-shell.c
+++ b/cmd-if-shell.c
@@ -123,7 +123,8 @@ cmd_if_shell_callback(struct job *job)
if (cmd == NULL)
return;
- if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
+ if (cmd_string_parse(&cmdq->client->session->environ, cmd, &cmdlist,
+ NULL, 0, &cause) != 0) {
if (cause != NULL) {
cmdq_error(cmdq, "%s", cause);
free(cause);
diff --git a/cmd-new-session.c b/cmd-new-session.c
index ad083a4..b0a5bd2 100644
--- a/cmd-new-session.c
+++ b/cmd-new-session.c
@@ -54,8 +54,8 @@ cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
struct window *w;
struct environ env;
struct termios tio, *tiop;
- const char *newname, *target, *update, *errstr, *template;
- char *cmd, *cause, *cp;
+ const char *newname, *target, *errstr, *template;
+ char *cmd, *cause, *cp, **var;
int detached, already_attached, idx, cwd, fd = -1;
u_int sx, sy;
struct format_tree *ft;
@@ -188,9 +188,14 @@ cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
/* Construct the environment. */
environ_init(&env);
- update = options_get_string(&global_s_options, "update-environment");
- if (c != NULL)
- environ_update(update, &c->environ, &env);
+ if (c != NULL && c->session == NULL)
+ environ_copy(&c->environ, &env);
+ else if ((c0 = cmd_current_client(cmdq)) != NULL)
+ environ_copy(&c0->environ, &env);
+ else {
+ for (var = environ; *var != NULL; var++)
+ environ_put(&env, *var);
+ }
/* Create the new session. */
idx = -1 - options_get_number(&global_s_options, "base-index");
diff --git a/cmd-respawn-pane.c b/cmd-respawn-pane.c
index bcde275..f92fbe6 100644
--- a/cmd-respawn-pane.c
+++ b/cmd-respawn-pane.c
@@ -65,8 +65,8 @@ cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
}
environ_init(&env);
- environ_copy(&global_environ, &env);
environ_copy(&s->environ, &env);
+ environ_copy(&global_environ, &env);
server_fill_environ(s, &env);
window_pane_reset_mode(wp);
diff --git a/cmd-respawn-window.c b/cmd-respawn-window.c
index e6d913c..3f0d7be 100644
--- a/cmd-respawn-window.c
+++ b/cmd-respawn-window.c
@@ -65,8 +65,8 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
}
environ_init(&env);
- environ_copy(&global_environ, &env);
environ_copy(&s->environ, &env);
+ environ_copy(&global_environ, &env);
server_fill_environ(s, &env);
wp = TAILQ_FIRST(&w->panes);
diff --git a/cmd-split-window.c b/cmd-split-window.c
index 4bb069f..31b5e09 100644
--- a/cmd-split-window.c
+++ b/cmd-split-window.c
@@ -75,8 +75,8 @@ cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
server_unzoom_window(w);
environ_init(&env);
- environ_copy(&global_environ, &env);
environ_copy(&s->environ, &env);
+ environ_copy(&global_environ, &env);
server_fill_environ(s, &env);
if (args->argc == 0)
diff --git a/cmd-string.c b/cmd-string.c
index e793ea0..98077d5 100644
--- a/cmd-string.c
+++ b/cmd-string.c
@@ -34,9 +34,9 @@
int cmd_string_getc(const char *, size_t *);
void cmd_string_ungetc(size_t *);
void cmd_string_copy(char **, char *, size_t *);
-char *cmd_string_string(const char *, size_t *, char, int);
-char *cmd_string_variable(const char *, size_t *);
-char *cmd_string_expand_tilde(const char *, size_t *);
+char *cmd_string_string(struct environ *, const char *, size_t *, char, int);
+char *cmd_string_variable(struct environ *, const char *, size_t *);
+char *cmd_string_expand_tilde(struct environ *, const char *, size_t *);
int
cmd_string_getc(const char *s, size_t *p)
@@ -59,8 +59,8 @@ cmd_string_ungetc(size_t *p)
* string, or NULL for empty command.
*/
int
-cmd_string_parse(const char *s, struct cmd_list **cmdlist, const char *file,
- u_int line, char **cause)
+cmd_string_parse(struct environ* environ, const char *s,
+ struct cmd_list **cmdlist, const char *file, u_int line, char **cause)
{
size_t p;
int ch, i, argc, rval;
@@ -84,17 +84,17 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist,
const char *file,
ch = cmd_string_getc(s, &p);
switch (ch) {
case '\'':
- if ((t = cmd_string_string(s, &p, '\'', 0)) == NULL)
+ if ((t = cmd_string_string(environ, s, &p, '\'', 0)) ==
NULL)
goto error;
cmd_string_copy(&buf, t, &len);
break;
case '"':
- if ((t = cmd_string_string(s, &p, '"', 1)) == NULL)
+ if ((t = cmd_string_string(environ, s, &p, '"', 1)) ==
NULL)
goto error;
cmd_string_copy(&buf, t, &len);
break;
case '$':
- if ((t = cmd_string_variable(s, &p)) == NULL)
+ if ((t = cmd_string_variable(environ, s, &p)) == NULL)
goto error;
cmd_string_copy(&buf, t, &len);
break;
@@ -140,7 +140,7 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist,
const char *file,
goto out;
case '~':
if (buf == NULL) {
- t = cmd_string_expand_tilde(s, &p);
+ t = cmd_string_expand_tilde(environ, s, &p);
if (t == NULL)
goto error;
cmd_string_copy(&buf, t, &len);
@@ -187,7 +187,7 @@ cmd_string_copy(char **dst, char *src, size_t *len)
}
char *
-cmd_string_string(const char *s, size_t *p, char endch, int esc)
+cmd_string_string(struct environ *environ, const char *s, size_t *p, char
endch, int esc)
{
int ch;
char *buf, *t;
@@ -223,7 +223,7 @@ cmd_string_string(const char *s, size_t *p, char endch, int
esc)
case '$':
if (!esc)
break;
- if ((t = cmd_string_variable(s, p)) == NULL)
+ if ((t = cmd_string_variable(environ, s, p)) == NULL)
goto error;
cmd_string_copy(&buf, t, &len);
continue;
@@ -245,7 +245,7 @@ error:
}
char *
-cmd_string_variable(const char *s, size_t *p)
+cmd_string_variable(struct environ *environ, const char *s, size_t *p)
{
int ch, fch;
char *buf, *t;
@@ -303,6 +303,8 @@ cmd_string_variable(const char *s, size_t *p)
buf[len] = '\0';
envent = environ_find(&global_environ, buf);
+ if (envent == NULL && environ)
+ envent = environ_find(environ, buf);
free(buf);
if (envent == NULL)
return (xstrdup(""));
@@ -314,7 +316,7 @@ error:
}
char *
-cmd_string_expand_tilde(const char *s, size_t *p)
+cmd_string_expand_tilde(struct environ *environ, const char *s, size_t *p)
{
struct passwd *pw;
struct environ_entry *envent;
@@ -326,6 +328,8 @@ cmd_string_expand_tilde(const char *s, size_t *p)
last = cmd_string_getc(s, p);
if (last == EOF || last == '/' || last == ' '|| last == '\t') {
envent = environ_find(&global_environ, "HOME");
+ if (envent == NULL && environ)
+ envent = environ_find(environ, "HOME");
if (envent != NULL && *envent->value != '\0')
home = envent->value;
else if ((pw = getpwuid(getuid())) != NULL)
diff --git a/control.c b/control.c
index 52fdb52..4b5df7b 100644
--- a/control.c
+++ b/control.c
@@ -69,7 +69,8 @@ control_callback(struct client *c, int closed, unused void
*data)
break;
}
- if (cmd_string_parse(line, &cmdlist, NULL, 0, &cause) != 0) {
+ if (cmd_string_parse(&c->session->environ, line, &cmdlist,
+ NULL, 0, &cause) != 0) {
c->cmdq->time = time(NULL);
c->cmdq->number++;
diff --git a/job.c b/job.c
index d7bd852..494d901 100644
--- a/job.c
+++ b/job.c
@@ -51,9 +51,9 @@ job_run(const char *cmd, struct session *s,
return (NULL);
environ_init(&env);
- environ_copy(&global_environ, &env);
if (s != NULL)
environ_copy(&s->environ, &env);
+ environ_copy(&global_environ, &env);
server_fill_environ(s, &env);
switch (pid = fork()) {
diff --git a/session.c b/session.c
index 66a52bc..eb51595 100644
--- a/session.c
+++ b/session.c
@@ -240,8 +240,8 @@ session_new(struct session *s, const char *name, const char
*cmd, int cwd,
}
environ_init(&env);
- environ_copy(&global_environ, &env);
environ_copy(&s->environ, &env);
+ environ_copy(&global_environ, &env);
server_fill_environ(s, &env);
shell = options_get_string(&s->options, "default-shell");
diff --git a/tmux.c b/tmux.c
index 1e6edd9..90a97be 100644
--- a/tmux.c
+++ b/tmux.c
@@ -289,10 +289,6 @@ main(int argc, char **argv)
}
environ_init(&global_environ);
- for (var = environ; *var != NULL; var++)
- environ_put(&global_environ, *var);
- if (getcwd(tmp, sizeof tmp) != NULL)
- environ_set(&global_environ, "PWD", tmp);
options_init(&global_options, NULL);
options_table_populate_tree(server_options_table, &global_options);
diff --git a/tmux.h b/tmux.h
index 84ad164..deff813 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1841,8 +1841,8 @@ int cmdq_continue(struct cmd_q *);
void cmdq_flush(struct cmd_q *);
/* cmd-string.c */
-int cmd_string_parse(const char *, struct cmd_list **, const char *,
- u_int, char **);
+int cmd_string_parse(struct environ *, const char *, struct cmd_list **,
+ const char *, u_int, char **);
/* client.c */
int client_main(int, char **, int);
diff --git a/window-choose.c b/window-choose.c
index 572581a..bc10b7e 100644
--- a/window-choose.c
+++ b/window-choose.c
@@ -228,7 +228,8 @@ window_choose_data_run(struct window_choose_data *cdata)
if (cdata->command == NULL)
return;
- if (cmd_string_parse(cdata->command, &cmdlist, NULL, 0, &cause) != 0) {
+ if (cmd_string_parse(&cdata->start_session->environ, cdata->command,
+ &cmdlist, NULL, 0, &cause) != 0) {
if (cause != NULL) {
*cause = toupper((u_char) *cause);
status_message_set(cdata->start_client, "%s", cause);
--
1.7.10.4
------------------------------------------------------------------------------
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