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/*
Copyright (c) 2010-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <pthread.h>
#include "cli.h"
#include "cli-cmd.h"
#include "cli-mem-types.h"
#include "protocol-common.h"
#include <fnmatch.h>
static int cmd_done;
static int cmd_sent;
static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t cond_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t conn = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t conn_mutex = PTHREAD_MUTEX_INITIALIZER;
int cli_op_ret = 0;
int connected = 0;
int cli_cmd_log_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
const char **words, int wordcount);
static unsigned
cli_cmd_needs_connection (struct cli_cmd_word *word)
{
if (!strcasecmp ("quit", word->word))
return 0;
if (!strcasecmp ("help", word->word))
return 0;
if (!strcasecmp ("getwd", word->word))
return 1;
if (!strcasecmp ("exit", word->word))
return 0;
return cli_default_conn_timeout;
}
int
cli_cmd_status_reset (void)
{
int ret = 0;
ret = cli_cmd_lock ();
{
if (ret == 0) {
cmd_sent = 0;
cmd_done = 0;
}
}
ret = cli_cmd_unlock ();
return ret;
}
int
cli_cmd_sent_status_get (int *status)
{
int ret = 0;
GF_ASSERT (status);
ret = cli_cmd_lock ();
{
if (ret == 0)
*status = cmd_sent;
}
ret = cli_cmd_unlock ();
return ret;
}
int
cli_cmd_process (struct cli_state *state, int argc, char **argv)
{
int ret = 0;
struct cli_cmd_word *word = NULL;
struct cli_cmd_word *next = NULL;
int i = 0;
word = &state->tree.root;
if (!argc)
return 0;
for (i = 0; i < argc; i++) {
next = cli_cmd_nextword (word, argv[i]);
word = next;
if (!word)
break;
if (word->cbkfn)
break;
}
if (!word) {
cli_out ("unrecognized word: %s (position %d)",
argv[i], i);
return -1;
}
if (!word->cbkfn) {
cli_out ("unrecognized command");
return -1;
}
if ( strcmp (word->word,"help")==0 )
goto callback;
state->await_connected = cli_cmd_needs_connection (word);
ret = cli_cmd_await_connected (state->await_connected);
if (ret) {
cli_out ("Connection failed. Please check if gluster "
"daemon is operational.");
gf_log ("", GF_LOG_INFO, "Exiting with: %d", ret);
exit (ret);
}
callback:
ret = word->cbkfn (state, word, (const char **)argv, argc);
(void) cli_cmd_status_reset ();
return ret;
}
int
cli_cmd_input_token_count (const char *text)
{
int count = 0;
const char *trav = NULL;
int is_spc = 1;
for (trav = text; *trav; trav++) {
if (*trav == ' ') {
is_spc = 1;
} else {
if (is_spc) {
count++;
is_spc = 0;
}
}
}
return count;
}
int
cli_cmd_process_line (struct cli_state *state, const char *text)
{
int count = 0;
char **tokens = NULL;
char **tokenp = NULL;
char *token = NULL;
char *copy = NULL;
char *saveptr = NULL;
int i = 0;
int ret = -1;
count = cli_cmd_input_token_count (text);
tokens = calloc (count + 1, sizeof (*tokens));
if (!tokens)
return -1;
copy = strdup (text);
if (!copy)
goto out;
tokenp = tokens;
for (token = strtok_r (copy, " \t\r\n", &saveptr); token;
token = strtok_r (NULL, " \t\r\n", &saveptr)) {
*tokenp = strdup (token);
if (!*tokenp)
goto out;
tokenp++;
i++;
}
ret = cli_cmd_process (state, count, tokens);
out:
free (copy);
if (tokens)
cli_cmd_tokens_destroy (tokens);
return ret;
}
int
cli_cmds_register (struct cli_state *state)
{
int ret = 0;
ret = cli_cmd_volume_register (state);
if (ret)
goto out;
ret = cli_cmd_probe_register (state);
if (ret)
goto out;
ret = cli_cmd_system_register (state);
if (ret)
goto out;
ret = cli_cmd_misc_register (state);
if (ret)
goto out;
ret = cli_cmd_snapshot_register (state);
if (ret)
goto out;
ret = cli_cmd_global_register (state);
if (ret)
goto out;
out:
return ret;
}
int
cli_cmd_cond_init ()
{
pthread_mutex_init (&cond_mutex, NULL);
pthread_cond_init (&cond, NULL);
pthread_mutex_init (&conn_mutex, NULL);
pthread_cond_init (&conn, NULL);
return 0;
}
int
cli_cmd_lock ()
{
pthread_mutex_lock (&cond_mutex);
return 0;
}
int
cli_cmd_unlock ()
{
pthread_mutex_unlock (&cond_mutex);
return 0;
}
static void
seconds_from_now (unsigned secs, struct timespec *ts)
{
struct timeval tv = {0,};
gettimeofday (&tv, NULL);
ts->tv_sec = tv.tv_sec + secs;
ts->tv_nsec = tv.tv_usec * 1000;
}
int
cli_cmd_await_response (unsigned time)
{
struct timespec ts = {0,};
int ret = 0;
cli_op_ret = -1;
seconds_from_now (time, &ts);
while (!cmd_done && !ret) {
ret = pthread_cond_timedwait (&cond, &cond_mutex,
&ts);
}
if (!cmd_done) {
if (ret == ETIMEDOUT)
cli_out ("Error : Request timed out");
else
cli_out ("Error : Command returned with error code:%d",
ret);
}
cmd_done = 0;
return cli_op_ret;
}
/* This function must be called _only_ after all actions associated with
* command processing is complete. Otherwise, gluster process may exit before
* reporting results to stdout/stderr. */
int
cli_cmd_broadcast_response (int32_t status)
{
pthread_mutex_lock (&cond_mutex);
{
if (!cmd_sent)
goto out;
cmd_done = 1;
cli_op_ret = status;
pthread_cond_broadcast (&cond);
}
out:
pthread_mutex_unlock (&cond_mutex);
return 0;
}
int32_t
cli_cmd_await_connected (unsigned conn_timo)
{
int32_t ret = 0;
struct timespec ts = {0,};
if (!conn_timo)
return 0;
pthread_mutex_lock (&conn_mutex);
{
seconds_from_now (conn_timo, &ts);
while (!connected && !ret) {
ret = pthread_cond_timedwait (&conn, &conn_mutex,
&ts);
}
}
pthread_mutex_unlock (&conn_mutex);
return ret;
}
int32_t
cli_cmd_broadcast_connected ()
{
pthread_mutex_lock (&conn_mutex);
{
connected = 1;
pthread_cond_broadcast (&conn);
}
pthread_mutex_unlock (&conn_mutex);
return 0;
}
int
cli_cmd_submit (struct rpc_clnt* rpc, void *req, call_frame_t *frame,
rpc_clnt_prog_t *prog,
int procnum, struct iobref *iobref,
xlator_t *this, fop_cbk_fn_t cbkfn, xdrproc_t xdrproc)
{
int ret = -1;
unsigned timeout = 0;
if ((GLUSTER_CLI_PROFILE_VOLUME == procnum) ||
(GLUSTER_CLI_HEAL_VOLUME == procnum) ||
(GLUSTER_CLI_GANESHA == procnum))
timeout = cli_ten_minutes_timeout;
else
timeout = cli_default_conn_timeout;
cli_cmd_lock ();
cmd_sent = 0;
ret = cli_submit_request (rpc, req, frame, prog,
procnum, NULL, this, cbkfn, xdrproc);
if (!ret) {
cmd_sent = 1;
ret = cli_cmd_await_response (timeout);
}
cli_cmd_unlock ();
gf_log ("cli", GF_LOG_DEBUG, "Returning %d", ret);
return ret;
}
int
cli_cmd_pattern_cmp (void *a, void *b)
{
struct cli_cmd *ia = NULL;
struct cli_cmd *ib = NULL;
int ret = 0;
ia = a;
ib = b;
if (strcmp (ia->pattern, ib->pattern) > 0)
ret = 1;
else if (strcmp (ia->pattern, ib->pattern) < 0)
ret = -1;
else
ret = 0;
return ret;
}
void
cli_cmd_sort (struct cli_cmd *cmd, int count)
{
gf_array_insertionsort (cmd, 1, count - 2, sizeof(struct cli_cmd),
cli_cmd_pattern_cmp);
}
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