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