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Fix bug 3842: add a GETINFO signal/names

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Also refactor SIGNAL so that it and signal/names use the same table.

(commit message by nickm)
This commit is contained in:
Brendan C 2012-06-28 15:36:52 -04:00 committed by Nick Mathewson
parent 12298901fd
commit a6169800f8
1 changed files with 44 additions and 19 deletions
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61
src/or/control.c
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@ -1244,6 +1244,27 @@ handle_control_saveconf(control_connection_t *conn, uint32_t len,
return 0;
}
struct signal_t {
int sig;
const char *signal_name;
};
static const struct signal_t signal_table[] = {
{ SIGHUP, "RELOAD" },
{ SIGHUP, "HUP" },
{ SIGINT, "SHUTDOWN" },
{ SIGUSR1, "DUMP" },
{ SIGUSR1, "USR1" },
{ SIGUSR2, "DEBUG" },
{ SIGUSR2, "USR2" },
{ SIGTERM, "HALT" },
{ SIGTERM, "TERM" },
{ SIGTERM, "INT" },
{ SIGNEWNYM, "NEWNYM" },
{ SIGCLEARDNSCACHE, "CLEARDNSCACHE"},
{ 0, NULL },
};
/** Called when we get a SIGNAL command. React to the provided signal, and
* report success or failure. (If the signal results in a shutdown, success
* may not be reported.) */
@ -1251,7 +1272,8 @@ static int
handle_control_signal(control_connection_t *conn, uint32_t len,
const char *body)
{
int sig;
int sig = -1;
int i;
int n = 0;
char *s;
@ -1260,25 +1282,17 @@ handle_control_signal(control_connection_t *conn, uint32_t len,
while (body[n] && ! TOR_ISSPACE(body[n]))
++n;
s = tor_strndup(body, n);
if (!strcasecmp(s, "RELOAD") || !strcasecmp(s, "HUP"))
sig = SIGHUP;
else if (!strcasecmp(s, "SHUTDOWN") || !strcasecmp(s, "INT"))
sig = SIGINT;
else if (!strcasecmp(s, "DUMP") || !strcasecmp(s, "USR1"))
sig = SIGUSR1;
else if (!strcasecmp(s, "DEBUG") || !strcasecmp(s, "USR2"))
sig = SIGUSR2;
else if (!strcasecmp(s, "HALT") || !strcasecmp(s, "TERM"))
sig = SIGTERM;
else if (!strcasecmp(s, "NEWNYM"))
sig = SIGNEWNYM;
else if (!strcasecmp(s, "CLEARDNSCACHE"))
sig = SIGCLEARDNSCACHE;
else {
for (i = 0; signal_table[i].signal_name != NULL; ++i) {
if (!strcasecmp(s, signal_table[i].signal_name)) {
sig = signal_table[i].sig;
break;
}
}
if (sig < 0)
connection_printf_to_buf(conn, "552 Unrecognized signal code \"%s\"\r\n",
s);
sig = -1;
}
tor_free(s);
if (sig < 0)
return 0;
@ -1432,6 +1446,16 @@ getinfo_helper_misc(control_connection_t *conn, const char *question,
*answer = smartlist_join_strings(event_names, " ", 0, NULL);
smartlist_free(event_names);
} else if (!strcmp(question, "signal/names")) {
smartlist_t *signal_names = smartlist_new();
int j;
for (j = 0; signal_table[j].signal_name != NULL; ++j) {
smartlist_add(signal_names, (char*)signal_table[j].signal_name);
}
*answer = smartlist_join_strings(signal_names, " ", 0, NULL);
smartlist_free(signal_names);
} else if (!strcmp(question, "features/names")) {
*answer = tor_strdup("VERBOSE_NAMES EXTENDED_EVENTS");
} else if (!strcmp(question, "address")) {
@ -2130,6 +2154,7 @@ static const getinfo_item_t getinfo_items[] = {
"List of GETINFO options, types, and documentation."),
ITEM("events/names", misc,
"Events that the controller can ask for with SETEVENTS."),
ITEM("signal/names", misc, "Signal names recognized by the SIGNAL command"),
ITEM("features/names", misc, "What arguments can USEFEATURE take?"),
PREFIX("desc/id/", dir, "Router descriptors by ID."),
PREFIX("desc/name/", dir, "Router descriptors by nickname."),