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#include <stdexcept>
using namespace std;
#include <dotconf.h>
#include "configuration.h"
#ifndef DEFAULT_PID_FILE
# define DEFAULT_PID_FILE "/var/run/dudki.pid"
#endif
configuration::configuration()
: check_interval(60), pidfile(DEFAULT_PID_FILE),
daemonize(true) {
}
enum dc_ctx {
DCC_ROOT = 1,
DCC_PROCESS = 2
};
struct dc_context {
dc_ctx ctx;
configuration* cf;
process* ps;
dc_context()
: ctx(DCC_ROOT), cf(NULL), ps(NULL) { }
};
static DOTCONF_CB(dco_check_interval) { dc_context *dcc = (dc_context*)ctx;
dcc->cf->check_interval = cmd->data.value;
return NULL;
}
static DOTCONF_CB(dco_daemonize) { dc_context *dcc = (dc_context*)ctx;
dcc->cf->daemonize = cmd->data.value;
return NULL;
}
static DOTCONF_CB(dco_pid_file) { dc_context *dcc = (dc_context*)ctx;
switch(dcc->ctx) {
case DCC_ROOT:
dcc->cf->pidfile = cmd->data.str;
break;
case DCC_PROCESS:
dcc->ps->pidfile = cmd->data.str;
break;
default:
return "Unexpected PidFile";
}
return NULL;
}
static DOTCONF_CB(dco_mailto_header) { dc_context *dcc = (dc_context*)ctx;
if(cmd->arg_count!=2)
return "Invalid number of arguments";
string h = cmd->data.list[0];
string v = cmd->data.list[1];
switch(dcc->ctx) {
case DCC_ROOT:
dcc->cf->mailto_headers[h] = v;
break;
case DCC_PROCESS:
dcc->ps->mailto_headers[h] = v;
break;
default:
return "Unexpected MailtoHeader";
}
return NULL;
}
static DOTCONF_CB(dco_notify) { dc_context *dcc = (dc_context*)ctx;
switch(dcc->ctx) {
case DCC_ROOT:
dcc->cf->notify = cmd->data.str;
break;
case DCC_PROCESS:
dcc->ps->notify = cmd->data.str;
break;
default:
return "Unexpected Notify";
}
return NULL;
}
static DOTCONF_CB(dco_process) { dc_context *dcc = (dc_context*)ctx;
string id = cmd->data.str;
if(id[id.length()-1]=='>')
id.erase(id.length()-1);
dcc->ps = &(dcc->cf->processes[id]);
dcc->ctx = DCC_PROCESS;
return NULL;
}
static DOTCONF_CB(dco__process) { dc_context *dcc = (dc_context*)ctx;
dcc->ps = NULL;
dcc->ctx = DCC_ROOT;
return NULL;
}
static DOTCONF_CB(dco_process_name) { dc_context *dcc = (dc_context*)ctx;
dcc->ps->process_name = cmd->data.str;
return NULL;
}
static DOTCONF_CB(dco_restart_command) { dc_context *dcc = (dc_context*)ctx;
dcc->ps->restart_cmd = cmd->data.str;
return NULL;
}
static DOTCONF_CB(dco_user) { dc_context *dcc = (dc_context*)ctx;
dcc->ps->user = cmd->data.str;
return NULL;
}
static DOTCONF_CB(dco_group) { dc_context *dcc = (dc_context*)ctx;
dcc->ps->group = cmd->data.str;
return NULL;
}
static DOTCONF_CB(dco_chroot) { dc_context *dcc = (dc_context*)ctx;
dcc->ps->chroot = cmd->data.str;
return NULL;
}
static const configoption_t dc_options[] = {
{ "CheckInterval", ARG_INT, dco_check_interval, NULL, DCC_ROOT },
{ "Daemonize", ARG_TOGGLE, dco_daemonize, NULL, DCC_ROOT },
{ "PidFile", ARG_STR, dco_pid_file, NULL, DCC_ROOT|DCC_PROCESS },
{ "MailtoHeader", ARG_STR, dco_mailto_header, NULL, DCC_ROOT|DCC_PROCESS },
{ "Notify", ARG_STR, dco_notify, NULL, DCC_ROOT|DCC_PROCESS },
{ "<Process", ARG_STR, dco_process, NULL, DCC_ROOT },
{ "ProcessName", ARG_STR, dco_process_name, NULL, DCC_PROCESS },
{ "RestartCommand", ARG_STR, dco_restart_command, NULL, DCC_PROCESS },
{ "User", ARG_STR, dco_user, NULL, DCC_PROCESS },
{ "Group", ARG_STR, dco_group, NULL, DCC_PROCESS },
{ "Chroot", ARG_STR, dco_chroot, NULL, DCC_PROCESS },
{ "</Process>", ARG_NONE, dco__process, NULL, DCC_PROCESS },
LAST_OPTION
};
static const char *dc_context_checker(command_t *cmd,unsigned long mask) {
dc_context *dcc = (dc_context*)cmd->context;
if( (mask==CTX_ALL) || ((mask&dcc->ctx)==dcc->ctx) )
return NULL;
return "misplaced option";
}
static FUNC_ERRORHANDLER(dc_error_handler) {
throw runtime_error(string("error parsing config file: ")+msg);
}
void configuration::parse(const string& cfile) {
struct dc_context dcc;
dcc.cf = this;
dcc.ctx = DCC_ROOT;
configfile_t *cf = dotconf_create((char*)cfile.c_str(),dc_options,(context_t*)&dcc,CASE_INSENSITIVE);
if(!cf)
throw runtime_error(string(__PRETTY_FUNCTION__)+": failed to dotconf_create()");
cf->errorhandler = (dotconf_errorhandler_t) dc_error_handler;
cf->contextchecker = (dotconf_contextchecker_t) dc_context_checker;
if(!dotconf_command_loop(cf))
throw runtime_error(string(__PRETTY_FUNCTION__)+": failed to dotconf_command_loop()");
dotconf_cleanup(cf);
}
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