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/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "master-instance.h"
#include "master-service-settings.h"
#include "doveadm.h"
#include "doveadm-print.h"
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
extern struct doveadm_cmd_ver2 doveadm_cmd_instance[];
static void instance_cmd_help(const struct doveadm_cmd_ver2 *cmd) ATTR_NORETURN;
static bool pid_file_read(const char *path)
{
char buf[32];
int fd;
ssize_t ret;
pid_t pid;
bool found = FALSE;
fd = open(path, O_RDONLY);
if (fd == -1) {
if (errno != ENOENT)
i_error("open(%s) failed: %m", path);
return FALSE;
}
ret = read(fd, buf, sizeof(buf));
if (ret < 0)
i_error("read(%s) failed: %m", path);
else if (ret > 0 && buf[ret-1] == '\n') {
buf[ret-1] = '\0';
if (str_to_pid(buf, &pid) == 0) {
found = !(pid == getpid() ||
(kill(pid, 0) < 0 && errno == ESRCH));
}
}
i_close_fd(&fd);
return found;
}
static void cmd_instance_list(struct doveadm_cmd_context *cctx)
{
struct master_instance_list *list;
struct master_instance_list_iter *iter;
const struct master_instance *inst;
const char *instance_path, *pidfile_path;
bool show_config = FALSE;
const char *name = NULL;
(void)doveadm_cmd_param_bool(cctx, "show-config", &show_config);
(void)doveadm_cmd_param_str(cctx, "name", &name);
if (!show_config) {
doveadm_print_init(DOVEADM_PRINT_TYPE_TABLE);
doveadm_print_header("path", "path", DOVEADM_PRINT_HEADER_FLAG_EXPAND);
doveadm_print_header_simple("name");
doveadm_print_header_simple("last used");
doveadm_print_header_simple("running");
}
instance_path = t_strconcat(service_set->state_dir,
"/"MASTER_INSTANCE_FNAME, NULL);
list = master_instance_list_init(instance_path);
iter = master_instance_list_iterate_init(list);
while ((inst = master_instance_iterate_list_next(iter)) != NULL) {
if (name != NULL && strcmp(name, inst->name) != 0)
continue;
if (show_config) {
printf("%s\n", inst->config_path == NULL ? "" :
inst->config_path);
continue;
}
doveadm_print(inst->base_dir);
doveadm_print(inst->name);
doveadm_print(unixdate2str(inst->last_used));
pidfile_path = t_strconcat(inst->base_dir, "/master.pid", NULL);
if (pid_file_read(pidfile_path))
doveadm_print("yes");
else
doveadm_print("no");
}
master_instance_iterate_list_deinit(&iter);
master_instance_list_deinit(&list);
}
static void cmd_instance_remove(struct doveadm_cmd_context *cctx)
{
struct master_instance_list *list;
const struct master_instance *inst;
const char *base_dir, *instance_path, *name;
int ret;
if (!doveadm_cmd_param_str(cctx, "name", &name))
instance_cmd_help(cctx->cmd);
instance_path = t_strconcat(service_set->state_dir,
"/"MASTER_INSTANCE_FNAME, NULL);
list = master_instance_list_init(instance_path);
inst = master_instance_list_find_by_name(list, name);
base_dir = inst != NULL ? inst->base_dir : name;
if ((ret = master_instance_list_remove(list, base_dir)) < 0) {
i_error("Failed to remove instance");
doveadm_exit_code = EX_TEMPFAIL;
} else if (ret == 0) {
i_error("Instance already didn't exist");
doveadm_exit_code = DOVEADM_EX_NOTFOUND;
}
master_instance_list_deinit(&list);
}
struct doveadm_cmd_ver2 doveadm_cmd_instance[] = {
{
.name = "instance list",
.cmd = cmd_instance_list,
.usage = "[-c] [<name>]",
DOVEADM_CMD_PARAMS_START
DOVEADM_CMD_PARAM('c', "show-config", CMD_PARAM_BOOL, 0)
DOVEADM_CMD_PARAM('\0', "name", CMD_PARAM_STR, CMD_PARAM_FLAG_POSITIONAL)
DOVEADM_CMD_PARAMS_END
},
{
.name = "instance remove",
.cmd = cmd_instance_remove,
.usage = "<name> | <base dir>",
DOVEADM_CMD_PARAMS_START
DOVEADM_CMD_PARAM('\0', "name", CMD_PARAM_STR, CMD_PARAM_FLAG_POSITIONAL)
DOVEADM_CMD_PARAMS_END
}
};
static void instance_cmd_help(const struct doveadm_cmd_ver2 *cmd)
{
unsigned int i;
for (i = 0; i < N_ELEMENTS(doveadm_cmd_instance); i++) {
if (doveadm_cmd_instance[i].cmd == cmd->cmd)
help_ver2(&doveadm_cmd_instance[i]);
}
i_unreached();
}
void doveadm_register_instance_commands(void)
{
unsigned int i;
for (i = 0; i < N_ELEMENTS(doveadm_cmd_instance); i++)
doveadm_cmd_register_ver2(&doveadm_cmd_instance[i]);
}
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