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| | /*
* Copyright (C) 2012-2013, Eric Wong <normalperson@yhbt.net>
* License: GPLv3 or later (see COPYING for details)
*/
/*
* parses config files used by the original (Perl) mogstored
*/
#include "cmogstored.h"
#include "cfg.h"
#include "listen_parser.h"
static char *mystrdup(const char *key, char *mark_beg, const char *p)
{
size_t mark_len = p - mark_beg;
mark_beg[mark_len] = 0;
if (strlen(mark_beg) != mark_len) {
syslog(LOG_ERR, "NUL character in `%s' value", key);
return NULL;
}
return xstrdup(mark_beg);
}
%%{
machine cfg_parser;
include listen_parser_common "listen_parser_common.rl";
eor = '\n';
ignored_line := ( (any-'\n')* eor ) @ { fgoto main; };
lws = (space-'\n');
comment = lws* ("#"(any-'\n')*);
comment_line = comment eor;
sep = lws* "=" lws*;
path = ((any - space)+) > { mark_beg = fpc; };
mgmtlisten = lws* "mgmtlisten" sep listen comment* (eor) > {
a = mog_listen_parse_internal(mark_beg, mark_len,
port_beg, port_len);
if (!a) return -1;
cfg->mgmtlisten = a;
};
httplisten = lws* "httplisten" sep listen comment* eor > {
a = mog_listen_parse_internal(mark_beg, mark_len,
port_beg, port_len);
if (!a) return -1;
cfg->httplisten = a;
};
httpgetlisten = lws* "httpgetlisten" sep listen comment* eor > {
a = mog_listen_parse_internal(mark_beg, mark_len,
port_beg, port_len);
if (!a) return -1;
cfg->httpgetlisten = a;
};
docroot = lws* "docroot" sep path (comment* eor) > {
/* delay realpath(3) until svc init, symlinks may change */
cfg->docroot = mystrdup("docroot", mark_beg, fpc);
if (!cfg->docroot) return -1;
};
pidfile = lws* "pidfile" sep path (comment* eor) > {
/* delay realpath(3) until svc init, symlinks may change */
cfg->pidfile = mystrdup("pidfile", mark_beg, fpc);
if (!cfg->pidfile) return -1;
};
daemonize = lws* "daemonize" comment* eor > { cfg->daemonize = true; };
maxconns = lws* "maxconns" sep
(digit+) > { mark_beg = fpc; }
(comment* eor) > {
mark_len = fpc - mark_beg;
mark_beg[mark_len] = 0;
errno = 0;
cfg->maxconns = strtoul(mark_beg, NULL, 10);
if (errno) {
syslog(LOG_ERR,
"failed to parse: maxconns = %s - %m",
mark_beg);
return -1;
}
};
server = lws* "server" sep
(alpha+) > { mark_beg = fpc; }
(comment* eor) > {
cfg->server = mystrdup("server", mark_beg, fpc);
if (!cfg->server) return -1;
mog_cfg_check_server(cfg);
};
serverbin = lws* "serverbin" sep path
(comment* eor) > {
char *tmp = mystrdup("serverbin", mark_beg, fpc);
if (!tmp) return -1;
warn("W: serverbin = %s ignored", tmp);
free(tmp);
};
main := (mgmtlisten | httplisten | httpgetlisten |
pidfile | docroot | daemonize | maxconns |
server | serverbin ) +
$! {
fhold;
fgoto ignored_line;
};
}%%
%% write data;
/* this is a one-shot parser, no need to stream local config files */
int mog_cfg_parse(struct mog_cfg *cfg, char *buf, size_t len)
{
char *p, *pe, *eof = NULL;
char *mark_beg = NULL;
char *port_beg = NULL;
size_t mark_len = 0;
size_t port_len = 0;
struct mog_addrinfo *a;
int cs;
%% write init;
p = buf;
pe = buf + len;
%% write exec;
if (cs == cfg_parser_error)
return -1;
assert(p <= pe && "buffer overflow after cfg parse");
return 0;
}
|