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Clean up $TMUX parsing, from Micah Cowan, tweaked by me.

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This commit is contained in:
Nicholas Marriott
2010-02-06 18:29:15 +00:00
parent 3ef3802629
commit 4a5017d1d8
1 changed files with 31 additions and 17 deletions
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48
tmux.c
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@@ -46,8 +46,14 @@ time_t start_time;
char *socket_path;
int login_shell;
struct env_data {
char *path;
pid_t pid;
u_int idx;
};
__dead void usage(void);
void fill_session(struct msg_command_data *);
void parse_env(struct env_data *);
char *makesockpath(const char *);
__dead void shell_exec(const char *, const char *);
@@ -129,9 +135,9 @@ areshell(const char *shell)
}
void
fill_session(struct msg_command_data *data)
parse_env(struct env_data *data)
{
char *env, *ptr1, *ptr2, buf[256];
char *env, *path_pid, *pid_idx, buf[256];
size_t len;
const char *errstr;
long long ll;
@@ -140,19 +146,24 @@ fill_session(struct msg_command_data *data)
if ((env = getenv("TMUX")) == NULL)
return;
if ((ptr2 = strrchr(env, ',')) == NULL || ptr2 == env)
if ((path_pid = strchr(env, ',')) == NULL || path_pid == env)
return;
for (ptr1 = ptr2 - 1; ptr1 > env && *ptr1 != ','; ptr1--)
;
if (*ptr1 != ',')
if ((pid_idx = strchr(path_pid + 1, ',')) == NULL)
return;
if ((pid_idx == path_pid + 1 || pid_idx[1] == '\0'))
return;
ptr1++;
ptr2++;
len = ptr2 - ptr1 - 1;
/* path */
len = path_pid - env;
data->path = xmalloc (len + 1);
memcpy(data->path, env, len);
data->path[len] = '\0';
/* pid */
len = pid_idx - path_pid - 1;
if (len > (sizeof buf) - 1)
return;
memcpy(buf, ptr1, len);
memcpy(buf, path_pid + 1, len);
buf[len] = '\0';
ll = strtonum(buf, 0, LONG_MAX, &errstr);
@@ -160,7 +171,8 @@ fill_session(struct msg_command_data *data)
return;
data->pid = ll;
ll = strtonum(ptr2, 0, UINT_MAX, &errstr);
/* idx */
ll = strtonum(pid_idx+1, 0, UINT_MAX, &errstr);
if (errstr != NULL)
return;
data->idx = ll;
@@ -224,6 +236,7 @@ main(int argc, char **argv)
struct passwd *pw;
struct options *oo, *so, *wo;
struct keylist *keylist;
struct env_data envdata;
struct msg_command_data cmddata;
char *s, *shellcmd, *path, *label, *home, *cause;
char cwd[MAXPATHLEN], **var;
@@ -238,6 +251,7 @@ main(int argc, char **argv)
flags = 0;
shellcmd = label = path = NULL;
envdata.path = NULL;
login_shell = (**argv == '-');
while ((opt = getopt(argc, argv, "28c:df:lL:qS:uUv")) != -1) {
switch (opt) {
@@ -442,13 +456,12 @@ main(int argc, char **argv)
* Figure out the socket path. If specified on the command-line with
* -S or -L, use it, otherwise try $TMUX or assume -L default.
*/
parse_env(&envdata);
if (path == NULL) {
/* No -L. Try $TMUX, or default. */
if (label == NULL) {
if ((path = getenv("TMUX")) != NULL) {
path = xstrdup(path);
path[strcspn(path, ",")] = '\0';
} else
path = envdata.path;
if (path == NULL)
label = xstrdup("default");
}
@@ -468,7 +481,8 @@ main(int argc, char **argv)
buf = NULL;
len = 0;
} else {
fill_session(&cmddata);
cmddata.pid = envdata.pid;
cmddata.idx = envdata.idx;
cmddata.argc = argc;
if (cmd_pack_argv(