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git01.mediatek.com / haproxy / b6fa08bc7bca48e0098b555e3c433e0969f46d4c / . / src / cfgparse.c
blob: cd90d7e804f616c5bd66ad12a7f1b4a2b3489aa3 [file] [log] [blame]
/*
* Configuration parser
*
* Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#ifdef USE_LIBCRYPT
/* This is to have crypt() defined on Linux */
#define _GNU_SOURCE
#ifdef USE_CRYPT_H
/* some platforms such as Solaris need this */
#include <crypt.h>
#endif
#endif /* USE_LIBCRYPT */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <ctype.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <common/cfgparse.h>
#include <common/chunk.h>
#include <common/config.h>
#include <common/errors.h>
#include <common/memory.h>
#include <common/standard.h>
#include <common/time.h>
#include <common/uri_auth.h>
#include <common/namespace.h>
#include <common/hathreads.h>
#include <types/capture.h>
#include <types/filters.h>
#include <types/global.h>
#include <types/obj_type.h>
#include <types/peers.h>
#include <types/mailers.h>
#include <types/dns.h>
#include <types/stats.h>
#include <proto/acl.h>
#include <proto/action.h>
#include <proto/auth.h>
#include <proto/backend.h>
#include <proto/channel.h>
#include <proto/checks.h>
#include <proto/dns.h>
#include <proto/stats.h>
#include <proto/filters.h>
#include <proto/frontend.h>
#include <proto/http_rules.h>
#include <proto/lb_chash.h>
#include <proto/lb_fas.h>
#include <proto/lb_fwlc.h>
#include <proto/lb_fwrr.h>
#include <proto/lb_map.h>
#include <proto/listener.h>
#include <proto/log.h>
#include <proto/protocol.h>
#include <proto/http_ana.h>
#include <proto/proxy.h>
#include <proto/peers.h>
#include <proto/sample.h>
#include <proto/session.h>
#include <proto/server.h>
#include <proto/stream.h>
#include <proto/stick_table.h>
#include <proto/task.h>
#include <proto/tcp_rules.h>
#include <proto/connection.h>
/* This is the SSLv3 CLIENT HELLO packet used in conjunction with the
* ssl-hello-chk option to ensure that the remote server speaks SSL.
*
* Check RFC 2246 (TLSv1.0) sections A.3 and A.4 for details.
*/
const char sslv3_client_hello_pkt[] = {
"\x16" /* ContentType : 0x16 = Hanshake */
"\x03\x00" /* ProtocolVersion : 0x0300 = SSLv3 */
"\x00\x79" /* ContentLength : 0x79 bytes after this one */
"\x01" /* HanshakeType : 0x01 = CLIENT HELLO */
"\x00\x00\x75" /* HandshakeLength : 0x75 bytes after this one */
"\x03\x00" /* Hello Version : 0x0300 = v3 */
"\x00\x00\x00\x00" /* Unix GMT Time (s) : filled with <now> (@0x0B) */
"HAPROXYSSLCHK\nHAPROXYSSLCHK\n" /* Random : must be exactly 28 bytes */
"\x00" /* Session ID length : empty (no session ID) */
"\x00\x4E" /* Cipher Suite Length : 78 bytes after this one */
"\x00\x01" "\x00\x02" "\x00\x03" "\x00\x04" /* 39 most common ciphers : */
"\x00\x05" "\x00\x06" "\x00\x07" "\x00\x08" /* 0x01...0x1B, 0x2F...0x3A */
"\x00\x09" "\x00\x0A" "\x00\x0B" "\x00\x0C" /* This covers RSA/DH, */
"\x00\x0D" "\x00\x0E" "\x00\x0F" "\x00\x10" /* various bit lengths, */
"\x00\x11" "\x00\x12" "\x00\x13" "\x00\x14" /* SHA1/MD5, DES/3DES/AES... */
"\x00\x15" "\x00\x16" "\x00\x17" "\x00\x18"
"\x00\x19" "\x00\x1A" "\x00\x1B" "\x00\x2F"
"\x00\x30" "\x00\x31" "\x00\x32" "\x00\x33"
"\x00\x34" "\x00\x35" "\x00\x36" "\x00\x37"
"\x00\x38" "\x00\x39" "\x00\x3A"
"\x01" /* Compression Length : 0x01 = 1 byte for types */
"\x00" /* Compression Type : 0x00 = NULL compression */
};
/* Used to chain configuration sections definitions. This list
* stores struct cfg_section
*/
struct list sections = LIST_HEAD_INIT(sections);
struct list postparsers = LIST_HEAD_INIT(postparsers);
char *cursection = NULL;
struct proxy defproxy = { }; /* fake proxy used to assign default values on all instances */
int cfg_maxpconn = 0; /* # of simultaneous connections per proxy (-N) */
int cfg_maxconn = 0; /* # of simultaneous connections, (-n) */
char *cfg_scope = NULL; /* the current scope during the configuration parsing */
/* List head of all known configuration keywords */
struct cfg_kw_list cfg_keywords = {
.list = LIST_HEAD_INIT(cfg_keywords.list)
};
/*
* converts <str> to a list of listeners which are dynamically allocated.
* The format is "{addr|'*'}:port[-end][,{addr|'*'}:port[-end]]*", where :
* - <addr> can be empty or "*" to indicate INADDR_ANY ;
* - <port> is a numerical port from 1 to 65535 ;
* - <end> indicates to use the range from <port> to <end> instead (inclusive).
* This can be repeated as many times as necessary, separated by a coma.
* Function returns 1 for success or 0 if error. In case of errors, if <err> is
* not NULL, it must be a valid pointer to either NULL or a freeable area that
* will be replaced with an error message.
*/
int str2listener(char *str, struct proxy *curproxy, struct bind_conf *bind_conf, const char *file, int line, char **err)
{
char *next, *dupstr;
int port, end;
next = dupstr = strdup(str);
while (next && *next) {
int inherited = 0;
struct sockaddr_storage *ss2;
int fd = -1;
str = next;
/* 1) look for the end of the first address */
if ((next = strchr(str, ',')) != NULL) {
*next++ = 0;
}
ss2 = str2sa_range(str, NULL, &port, &end, err,
curproxy == global.stats_fe ? NULL : global.unix_bind.prefix,
NULL, 1);
if (!ss2)
goto fail;
if (ss2->ss_family == AF_INET || ss2->ss_family == AF_INET6) {
if (!port && !end) {
memprintf(err, "missing port number: '%s'\n", str);
goto fail;
}
if (!port || !end) {
memprintf(err, "port offsets are not allowed in 'bind': '%s'\n", str);
goto fail;
}
if (port < 1 || port > 65535) {
memprintf(err, "invalid port '%d' specified for address '%s'.\n", port, str);
goto fail;
}
if (end < 1 || end > 65535) {
memprintf(err, "invalid port '%d' specified for address '%s'.\n", end, str);
goto fail;
}
}
else if (ss2->ss_family == AF_UNSPEC) {
socklen_t addr_len;
inherited = 1;
/* We want to attach to an already bound fd whose number
* is in the addr part of ss2 when cast to sockaddr_in.
* Note that by definition there is a single listener.
* We still have to determine the address family to
* register the correct protocol.
*/
fd = ((struct sockaddr_in *)ss2)->sin_addr.s_addr;
addr_len = sizeof(*ss2);
if (getsockname(fd, (struct sockaddr *)ss2, &addr_len) == -1) {
memprintf(err, "cannot use file descriptor '%d' : %s.\n", fd, strerror(errno));
goto fail;
}
port = end = get_host_port(ss2);
} else if (ss2->ss_family == AF_CUST_SOCKPAIR) {
socklen_t addr_len;
inherited = 1;
fd = ((struct sockaddr_in *)ss2)->sin_addr.s_addr;
addr_len = sizeof(*ss2);
if (getsockname(fd, (struct sockaddr *)ss2, &addr_len) == -1) {
memprintf(err, "cannot use file descriptor '%d' : %s.\n", fd, strerror(errno));
goto fail;
}
ss2->ss_family = AF_CUST_SOCKPAIR; /* reassign AF_CUST_SOCKPAIR because of getsockname */
port = end = 0;
}
/* OK the address looks correct */
if (!create_listeners(bind_conf, ss2, port, end, fd, inherited, err)) {
memprintf(err, "%s for address '%s'.\n", *err, str);
goto fail;
}
} /* end while(next) */
free(dupstr);
return 1;
fail:
free(dupstr);
return 0;
}
/*
* Report an error in <msg> when there are too many arguments. This version is
* intended to be used by keyword parsers so that the message will be included
* into the general error message. The index is the current keyword in args.
* Return 0 if the number of argument is correct, otherwise build a message and
* return 1. Fill err_code with an ERR_ALERT and an ERR_FATAL if not null. The
* message may also be null, it will simply not be produced (useful to check only).
* <msg> and <err_code> are only affected on error.
*/
int too_many_args_idx(int maxarg, int index, char **args, char **msg, int *err_code)
{
int i;
if (!*args[index + maxarg + 1])
return 0;
if (msg) {
*msg = NULL;
memprintf(msg, "%s", args[0]);
for (i = 1; i <= index; i++)
memprintf(msg, "%s %s", *msg, args[i]);
memprintf(msg, "'%s' cannot handle unexpected argument '%s'.", *msg, args[index + maxarg + 1]);
}
if (err_code)
*err_code |= ERR_ALERT | ERR_FATAL;
return 1;
}
/*
* same as too_many_args_idx with a 0 index
*/
int too_many_args(int maxarg, char **args, char **msg, int *err_code)
{
return too_many_args_idx(maxarg, 0, args, msg, err_code);
}
/*
* Report a fatal Alert when there is too much arguments
* The index is the current keyword in args
* Return 0 if the number of argument is correct, otherwise emit an alert and return 1
* Fill err_code with an ERR_ALERT and an ERR_FATAL
*/
int alertif_too_many_args_idx(int maxarg, int index, const char *file, int linenum, char **args, int *err_code)
{
char *kw = NULL;
int i;
if (!*args[index + maxarg + 1])
return 0;
memprintf(&kw, "%s", args[0]);
for (i = 1; i <= index; i++) {
memprintf(&kw, "%s %s", kw, args[i]);
}
ha_alert("parsing [%s:%d] : '%s' cannot handle unexpected argument '%s'.\n", file, linenum, kw, args[index + maxarg + 1]);
free(kw);
*err_code |= ERR_ALERT | ERR_FATAL;
return 1;
}
/*
* same as alertif_too_many_args_idx with a 0 index
*/
int alertif_too_many_args(int maxarg, const char *file, int linenum, char **args, int *err_code)
{
return alertif_too_many_args_idx(maxarg, 0, file, linenum, args, err_code);
}
/* Report it if a request ACL condition uses some keywords that are incompatible
* with the place where the ACL is used. It returns either 0 or ERR_WARN so that
* its result can be or'ed with err_code. Note that <cond> may be NULL and then
* will be ignored.
*/
int warnif_cond_conflicts(const struct acl_cond *cond, unsigned int where, const char *file, int line)
{
const struct acl *acl;
const char *kw;
if (!cond)
return 0;
acl = acl_cond_conflicts(cond, where);
if (acl) {
if (acl->name && *acl->name)
ha_warning("parsing [%s:%d] : acl '%s' will never match because it only involves keywords that are incompatible with '%s'\n",
file, line, acl->name, sample_ckp_names(where));
else
ha_warning("parsing [%s:%d] : anonymous acl will never match because it uses keyword '%s' which is incompatible with '%s'\n",
file, line, LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw, sample_ckp_names(where));
return ERR_WARN;
}
if (!acl_cond_kw_conflicts(cond, where, &acl, &kw))
return 0;
if (acl->name && *acl->name)
ha_warning("parsing [%s:%d] : acl '%s' involves keywords '%s' which is incompatible with '%s'\n",
file, line, acl->name, kw, sample_ckp_names(where));
else
ha_warning("parsing [%s:%d] : anonymous acl involves keyword '%s' which is incompatible with '%s'\n",
file, line, kw, sample_ckp_names(where));
return ERR_WARN;
}
/* Parse a string representing a process number or a set of processes. It must
* be "all", "odd", "even", a number between 1 and <max> or a range with
* two such numbers delimited by a dash ('-'). On success, it returns
* 0. otherwise it returns 1 with an error message in <err>.
*
* Note: this function can also be used to parse a thread number or a set of
* threads.
*/
int parse_process_number(const char *arg, unsigned long *proc, int max, int *autoinc, char **err)
{
if (autoinc) {
*autoinc = 0;
if (strncmp(arg, "auto:", 5) == 0) {
arg += 5;
*autoinc = 1;
}
}
if (strcmp(arg, "all") == 0)
*proc |= ~0UL;
else if (strcmp(arg, "odd") == 0)
*proc |= ~0UL/3UL; /* 0x555....555 */
else if (strcmp(arg, "even") == 0)
*proc |= (~0UL/3UL) << 1; /* 0xAAA...AAA */
else {
const char *p, *dash = NULL;
unsigned int low, high;
for (p = arg; *p; p++) {
if (*p == '-' && !dash)
dash = p;
else if (!isdigit((int)*p)) {
memprintf(err, "'%s' is not a valid number/range.", arg);
return -1;
}
}
low = high = str2uic(arg);
if (dash)
high = ((!*(dash+1)) ? max : str2uic(dash + 1));
if (high < low) {
unsigned int swap = low;
low = high;
high = swap;
}
if (low < 1 || low > max || high > max) {
memprintf(err, "'%s' is not a valid number/range."
" It supports numbers from 1 to %d.\n",
arg, max);
return 1;
}
for (;low <= high; low++)
*proc |= 1UL << (low-1);
}
*proc &= ~0UL >> (LONGBITS - max);
return 0;
}
#ifdef USE_CPU_AFFINITY
/* Parse cpu sets. Each CPU set is either a unique number between 0 and
* <LONGBITS> or a range with two such numbers delimited by a dash
* ('-'). Multiple CPU numbers or ranges may be specified. On success, it
* returns 0. otherwise it returns 1 with an error message in <err>.
*/
unsigned long parse_cpu_set(const char **args, unsigned long *cpu_set, char **err)
{
int cur_arg = 0;
*cpu_set = 0;
while (*args[cur_arg]) {
char *dash;
unsigned int low, high;
if (!isdigit((int)*args[cur_arg])) {
memprintf(err, "'%s' is not a CPU range.\n", args[cur_arg]);
return -1;
}
low = high = str2uic(args[cur_arg]);
if ((dash = strchr(args[cur_arg], '-')) != NULL)
high = ((!*(dash+1)) ? LONGBITS-1 : str2uic(dash + 1));
if (high < low) {
unsigned int swap = low;
low = high;
high = swap;
}
if (high >= LONGBITS) {
memprintf(err, "supports CPU numbers from 0 to %d.\n", LONGBITS - 1);
return 1;
}
while (low <= high)
*cpu_set |= 1UL << low++;
cur_arg++;
}
return 0;
}
#endif
void init_default_instance()
{
init_new_proxy(&defproxy);
defproxy.mode = PR_MODE_TCP;
defproxy.state = PR_STNEW;
defproxy.maxconn = cfg_maxpconn;
defproxy.conn_retries = CONN_RETRIES;
defproxy.redispatch_after = 0;
defproxy.options = PR_O_REUSE_SAFE;
defproxy.max_out_conns = MAX_SRV_LIST;
defproxy.defsrv.check.inter = DEF_CHKINTR;
defproxy.defsrv.check.fastinter = 0;
defproxy.defsrv.check.downinter = 0;
defproxy.defsrv.agent.inter = DEF_CHKINTR;
defproxy.defsrv.agent.fastinter = 0;
defproxy.defsrv.agent.downinter = 0;
defproxy.defsrv.check.rise = DEF_RISETIME;
defproxy.defsrv.check.fall = DEF_FALLTIME;
defproxy.defsrv.agent.rise = DEF_AGENT_RISETIME;
defproxy.defsrv.agent.fall = DEF_AGENT_FALLTIME;
defproxy.defsrv.check.port = 0;
defproxy.defsrv.agent.port = 0;
defproxy.defsrv.maxqueue = 0;
defproxy.defsrv.minconn = 0;
defproxy.defsrv.maxconn = 0;
defproxy.defsrv.max_reuse = -1;
defproxy.defsrv.max_idle_conns = -1;
defproxy.defsrv.pool_purge_delay = 5000;
defproxy.defsrv.slowstart = 0;
defproxy.defsrv.onerror = DEF_HANA_ONERR;
defproxy.defsrv.consecutive_errors_limit = DEF_HANA_ERRLIMIT;
defproxy.defsrv.uweight = defproxy.defsrv.iweight = 1;
defproxy.email_alert.level = LOG_ALERT;
defproxy.load_server_state_from_file = PR_SRV_STATE_FILE_UNSPEC;
}
/* Allocate and initialize the frontend of a "peers" section found in
* file <file> at line <linenum> with <id> as ID.
* Return 0 if succeeded, -1 if not.
* Note that this function may be called from "default-server"
* or "peer" lines.
*/
static int init_peers_frontend(const char *file, int linenum,
const char *id, struct peers *peers)
{
struct proxy *p;
if (peers->peers_fe) {
p = peers->peers_fe;
goto out;
}
p = calloc(1, sizeof *p);
if (!p) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
return -1;
}
init_new_proxy(p);
peers_setup_frontend(p);
p->parent = peers;
/* Finally store this frontend. */
peers->peers_fe = p;
out:
if (id && !p->id)
p->id = strdup(id);
free(p->conf.file);
p->conf.args.file = p->conf.file = strdup(file);
if (linenum != -1)
p->conf.args.line = p->conf.line = linenum;
return 0;
}
/* Only change ->file, ->line and ->arg struct bind_conf member values
* if already present.
*/
static struct bind_conf *bind_conf_uniq_alloc(struct proxy *p,
const char *file, int line,
const char *arg, struct xprt_ops *xprt)
{
struct bind_conf *bind_conf;
if (!LIST_ISEMPTY(&p->conf.bind)) {
bind_conf = LIST_ELEM((&p->conf.bind)->n, typeof(bind_conf), by_fe);
free(bind_conf->file);
bind_conf->file = strdup(file);
bind_conf->line = line;
if (arg) {
free(bind_conf->arg);
bind_conf->arg = strdup(arg);
}
}
else {
bind_conf = bind_conf_alloc(p, file, line, arg, xprt);
}
return bind_conf;
}
/*
* Allocate a new struct peer parsed at line <linenum> in file <file>
* to be added to <peers>.
* Returns the new allocated structure if succeeded, NULL if not.
*/
static struct peer *cfg_peers_add_peer(struct peers *peers,
const char *file, int linenum,
const char *id, int local)
{
struct peer *p;
p = calloc(1, sizeof *p);
if (!p) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
return NULL;
}
/* the peers are linked backwards first */
peers->count++;
p->next = peers->remote;
peers->remote = p;
p->conf.file = strdup(file);
p->conf.line = linenum;
p->last_change = now.tv_sec;
p->xprt = xprt_get(XPRT_RAW);
p->sock_init_arg = NULL;
HA_SPIN_INIT(&p->lock);
if (id)
p->id = strdup(id);
if (local) {
p->local = 1;
peers->local = p;
}
return p;
}
/*
* Parse a line in a <listen>, <frontend> or <backend> section.
* Returns the error code, 0 if OK, or any combination of :
* - ERR_ABORT: must abort ASAP
* - ERR_FATAL: we can continue parsing but not start the service
* - ERR_WARN: a warning has been emitted
* - ERR_ALERT: an alert has been emitted
* Only the two first ones can stop processing, the two others are just
* indicators.
*/
int cfg_parse_peers(const char *file, int linenum, char **args, int kwm)
{
static struct peers *curpeers = NULL;
struct peer *newpeer = NULL;
const char *err;
struct bind_conf *bind_conf;
struct listener *l;
int err_code = 0;
char *errmsg = NULL;
static int bind_line, peer_line;
if (strcmp(args[0], "bind") == 0 || strcmp(args[0], "default-bind") == 0) {
int cur_arg;
static int kws_dumped;
struct bind_conf *bind_conf;
struct bind_kw *kw;
cur_arg = 1;
if (init_peers_frontend(file, linenum, NULL, curpeers) != 0) {
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
bind_conf = bind_conf_uniq_alloc(curpeers->peers_fe, file, linenum,
NULL, xprt_get(XPRT_RAW));
if (*args[0] == 'b') {
struct listener *l;
if (peer_line) {
ha_alert("parsing [%s:%d] : mixing \"peer\" and \"bind\" line is forbidden\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (!str2listener(args[1], curpeers->peers_fe, bind_conf, file, linenum, &errmsg)) {
if (errmsg && *errmsg) {
indent_msg(&errmsg, 2);
ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
}
else
ha_alert("parsing [%s:%d] : '%s %s' : error encountered while parsing listening address %s.\n",
file, linenum, args[0], args[1], args[2]);
err_code |= ERR_FATAL;
goto out;
}
l = LIST_ELEM(bind_conf->listeners.n, typeof(l), by_bind);
l->maxaccept = 1;
l->accept = session_accept_fd;
l->analysers |= curpeers->peers_fe->fe_req_ana;
l->default_target = curpeers->peers_fe->default_target;
l->options |= LI_O_UNLIMITED; /* don't make the peers subject to global limits */
global.maxsock++; /* for the listening socket */
bind_line = 1;
if (cfg_peers->local) {
newpeer = cfg_peers->local;
}
else {
/* This peer is local.
* Note that we do not set the peer ID. This latter is initialized
* when parsing "peer" or "server" line.
*/
newpeer = cfg_peers_add_peer(curpeers, file, linenum, NULL, 1);
if (!newpeer) {
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
}
newpeer->addr = l->addr;
newpeer->proto = protocol_by_family(newpeer->addr.ss_family);
cur_arg++;
}
while (*args[cur_arg] && (kw = bind_find_kw(args[cur_arg]))) {
int ret;
ret = kw->parse(args, cur_arg, curpeers->peers_fe, bind_conf, &errmsg);
err_code |= ret;
if (ret) {
if (errmsg && *errmsg) {
indent_msg(&errmsg, 2);
ha_alert("parsing [%s:%d] : %s\n", file, linenum, errmsg);
}
else
ha_alert("parsing [%s:%d]: error encountered while processing '%s'\n",
file, linenum, args[cur_arg]);
if (ret & ERR_FATAL)
goto out;
}
cur_arg += 1 + kw->skip;
}
if (*args[cur_arg] != 0) {
char *kws = NULL;
if (!kws_dumped) {
kws_dumped = 1;
bind_dump_kws(&kws);
indent_msg(&kws, 4);
}
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section.%s%s\n",
file, linenum, args[cur_arg], cursection,
kws ? " Registered keywords :" : "", kws ? kws: "");
free(kws);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (strcmp(args[0], "default-server") == 0) {
if (init_peers_frontend(file, -1, NULL, curpeers) != 0) {
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
err_code |= parse_server(file, linenum, args, curpeers->peers_fe, NULL, 0);
}
else if (strcmp(args[0], "log") == 0) {
if (init_peers_frontend(file, linenum, NULL, curpeers) != 0) {
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
if (!parse_logsrv(args, &curpeers->peers_fe->logsrvs, (kwm == KWM_NO), &errmsg)) {
ha_alert("parsing [%s:%d] : %s : %s\n", file, linenum, args[0], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (strcmp(args[0], "peers") == 0) { /* new peers section */
/* Initialize these static variables when entering a new "peers" section*/
bind_line = peer_line = 0;
if (!*args[1]) {
ha_alert("parsing [%s:%d] : missing name for peers section.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
if (alertif_too_many_args(1, file, linenum, args, &err_code))
goto out;
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in '%s' name '%s'.\n",
file, linenum, *err, args[0], args[1]);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
for (curpeers = cfg_peers; curpeers != NULL; curpeers = curpeers->next) {
/*
* If there are two proxies with the same name only following
* combinations are allowed:
*/
if (strcmp(curpeers->id, args[1]) == 0) {
ha_alert("Parsing [%s:%d]: peers section '%s' has the same name as another peers section declared at %s:%d.\n",
file, linenum, args[1], curpeers->conf.file, curpeers->conf.line);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
if ((curpeers = calloc(1, sizeof(*curpeers))) == NULL) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curpeers->next = cfg_peers;
cfg_peers = curpeers;
curpeers->conf.file = strdup(file);
curpeers->conf.line = linenum;
curpeers->last_change = now.tv_sec;
curpeers->id = strdup(args[1]);
curpeers->state = PR_STNEW;
}
else if (strcmp(args[0], "peer") == 0 ||
strcmp(args[0], "server") == 0) { /* peer or server definition */
int local_peer, peer;
peer = *args[0] == 'p';
local_peer = !strcmp(args[1], localpeer);
/* The local peer may have already partially been parsed on a "bind" line. */
if (*args[0] == 'p') {
if (bind_line) {
ha_alert("parsing [%s:%d] : mixing \"peer\" and \"bind\" line is forbidden\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
peer_line = 1;
}
if (cfg_peers->local && !cfg_peers->local->id && local_peer) {
/* The local peer has already been initialized on a "bind" line.
* Let's use it and store its ID.
*/
newpeer = cfg_peers->local;
newpeer->id = strdup(localpeer);
}
else {
if (local_peer && cfg_peers->local) {
ha_alert("parsing [%s:%d] : '%s %s' : local peer name already referenced at %s:%d. %s\n",
file, linenum, args[0], args[1],
curpeers->peers_fe->conf.file, curpeers->peers_fe->conf.line, cfg_peers->local->id);
err_code |= ERR_FATAL;
goto out;
}
newpeer = cfg_peers_add_peer(curpeers, file, linenum, args[1], local_peer);
if (!newpeer) {
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
}
/* Line number and peer ID are updated only if this peer is the local one. */
if (init_peers_frontend(file,
newpeer->local ? linenum: -1,
newpeer->local ? newpeer->id : NULL,
curpeers) != 0) {
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
/* This initializes curpeer->peers->peers_fe->srv.
* The server address is parsed only if we are parsing a "peer" line,
* or if we are parsing a "server" line and the current peer is not the local one.
*/
err_code |= parse_server(file, linenum, args, curpeers->peers_fe, NULL, peer || !local_peer);
if (!curpeers->peers_fe->srv)
goto out;
/* If the peer address has just been parsed, let's copy it to <newpeer>
* and initializes ->proto.
*/
if (peer || !local_peer) {
newpeer->addr = curpeers->peers_fe->srv->addr;
newpeer->proto = protocol_by_family(newpeer->addr.ss_family);
}
newpeer->xprt = xprt_get(XPRT_RAW);
newpeer->sock_init_arg = NULL;
HA_SPIN_INIT(&newpeer->lock);
newpeer->srv = curpeers->peers_fe->srv;
if (!newpeer->local)
goto out;
/* The lines above are reserved to "peer" lines. */
if (*args[0] == 's')
goto out;
bind_conf = bind_conf_uniq_alloc(curpeers->peers_fe, file, linenum, args[2], xprt_get(XPRT_RAW));
if (!str2listener(args[2], curpeers->peers_fe, bind_conf, file, linenum, &errmsg)) {
if (errmsg && *errmsg) {
indent_msg(&errmsg, 2);
ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
}
else
ha_alert("parsing [%s:%d] : '%s %s' : error encountered while parsing listening address %s.\n",
file, linenum, args[0], args[1], args[2]);
err_code |= ERR_FATAL;
goto out;
}
l = LIST_ELEM(bind_conf->listeners.n, typeof(l), by_bind);
l->maxaccept = 1;
l->accept = session_accept_fd;
l->analysers |= curpeers->peers_fe->fe_req_ana;
l->default_target = curpeers->peers_fe->default_target;
l->options |= LI_O_UNLIMITED; /* don't make the peers subject to global limits */
global.maxsock++; /* for the listening socket */
}
else if (!strcmp(args[0], "table")) {
struct stktable *t, *other;
char *id;
size_t prefix_len;
/* Line number and peer ID are updated only if this peer is the local one. */
if (init_peers_frontend(file, -1, NULL, curpeers) != 0) {
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
other = stktable_find_by_name(args[1]);
if (other) {
ha_alert("parsing [%s:%d] : stick-table name '%s' conflicts with table declared in %s '%s' at %s:%d.\n",
file, linenum, args[1],
other->proxy ? proxy_cap_str(other->proxy->cap) : "peers",
other->proxy ? other->id : other->peers.p->id,
other->conf.file, other->conf.line);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
/* Build the stick-table name, concatenating the "peers" section name
* followed by a '/' character and the table name argument.
*/
chunk_reset(&trash);
if (!chunk_strcpy(&trash, curpeers->id)) {
ha_alert("parsing [%s:%d]: '%s %s' : stick-table name too long.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
prefix_len = trash.data;
if (!chunk_memcat(&trash, "/", 1) || !chunk_strcat(&trash, args[1])) {
ha_alert("parsing [%s:%d]: '%s %s' : stick-table name too long.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
t = calloc(1, sizeof *t);
id = strdup(trash.area);
if (!t || !id) {
ha_alert("parsing [%s:%d]: '%s %s' : memory allocation failed\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
err_code |= parse_stick_table(file, linenum, args, t, id, id + prefix_len, curpeers);
if (err_code & ERR_FATAL)
goto out;
stktable_store_name(t);
t->next = stktables_list;
stktables_list = t;
}
else if (!strcmp(args[0], "disabled")) { /* disables this peers section */
curpeers->state = PR_STSTOPPED;
}
else if (!strcmp(args[0], "enabled")) { /* enables this peers section (used to revert a disabled default) */
curpeers->state = PR_STNEW;
}
else if (*args[0] != 0) {
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section\n", file, linenum, args[0], cursection);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
out:
free(errmsg);
return err_code;
}
/*
* Parse a <resolvers> section.
* Returns the error code, 0 if OK, or any combination of :
* - ERR_ABORT: must abort ASAP
* - ERR_FATAL: we can continue parsing but not start the service
* - ERR_WARN: a warning has been emitted
* - ERR_ALERT: an alert has been emitted
* Only the two first ones can stop processing, the two others are just
* indicators.
*/
int cfg_parse_resolvers(const char *file, int linenum, char **args, int kwm)
{
static struct dns_resolvers *curr_resolvers = NULL;
struct dns_nameserver *newnameserver = NULL;
const char *err;
int err_code = 0;
char *errmsg = NULL;
if (strcmp(args[0], "resolvers") == 0) { /* new resolvers section */
if (!*args[1]) {
ha_alert("parsing [%s:%d] : missing name for resolvers section.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in '%s' name '%s'.\n",
file, linenum, *err, args[0], args[1]);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
list_for_each_entry(curr_resolvers, &dns_resolvers, list) {
/* Error if two resolvers owns the same name */
if (strcmp(curr_resolvers->id, args[1]) == 0) {
ha_alert("Parsing [%s:%d]: resolvers '%s' has same name as another resolvers (declared at %s:%d).\n",
file, linenum, args[1], curr_resolvers->conf.file, curr_resolvers->conf.line);
err_code |= ERR_ALERT | ERR_ABORT;
}
}
if ((curr_resolvers = calloc(1, sizeof(*curr_resolvers))) == NULL) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
/* default values */
LIST_ADDQ(&dns_resolvers, &curr_resolvers->list);
curr_resolvers->conf.file = strdup(file);
curr_resolvers->conf.line = linenum;
curr_resolvers->id = strdup(args[1]);
curr_resolvers->query_ids = EB_ROOT;
/* default maximum response size */
curr_resolvers->accepted_payload_size = 512;
/* default hold period for nx, other, refuse and timeout is 30s */
curr_resolvers->hold.nx = 30000;
curr_resolvers->hold.other = 30000;
curr_resolvers->hold.refused = 30000;
curr_resolvers->hold.timeout = 30000;
curr_resolvers->hold.obsolete = 0;
/* default hold period for valid is 10s */
curr_resolvers->hold.valid = 10000;
curr_resolvers->timeout.resolve = 1000;
curr_resolvers->timeout.retry = 1000;
curr_resolvers->resolve_retries = 3;
curr_resolvers->nb_nameservers = 0;
LIST_INIT(&curr_resolvers->nameservers);
LIST_INIT(&curr_resolvers->resolutions.curr);
LIST_INIT(&curr_resolvers->resolutions.wait);
HA_SPIN_INIT(&curr_resolvers->lock);
}
else if (strcmp(args[0], "nameserver") == 0) { /* nameserver definition */
struct sockaddr_storage *sk;
int port1, port2;
struct protocol *proto;
if (!*args[2]) {
ha_alert("parsing [%s:%d] : '%s' expects <name> and <addr>[:<port>] as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in server name '%s'.\n",
file, linenum, *err, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
list_for_each_entry(newnameserver, &curr_resolvers->nameservers, list) {
/* Error if two resolvers owns the same name */
if (strcmp(newnameserver->id, args[1]) == 0) {
ha_alert("Parsing [%s:%d]: nameserver '%s' has same name as another nameserver (declared at %s:%d).\n",
file, linenum, args[1], newnameserver->conf.file, newnameserver->conf.line);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
if ((newnameserver = calloc(1, sizeof(*newnameserver))) == NULL) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
/* the nameservers are linked backward first */
LIST_ADDQ(&curr_resolvers->nameservers, &newnameserver->list);
newnameserver->resolvers = curr_resolvers;
newnameserver->conf.file = strdup(file);
newnameserver->conf.line = linenum;
newnameserver->id = strdup(args[1]);
sk = str2sa_range(args[2], NULL, &port1, &port2, &errmsg, NULL, NULL, 1);
if (!sk) {
ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
proto = protocol_by_family(sk->ss_family);
if (!proto || !proto->connect) {
ha_alert("parsing [%s:%d] : '%s %s' : connect() not supported for this address family.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (port1 != port2) {
ha_alert("parsing [%s:%d] : '%s %s' : port ranges and offsets are not allowed in '%s'\n",
file, linenum, args[0], args[1], args[2]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (!port1 && !port2) {
ha_alert("parsing [%s:%d] : '%s %s' : no UDP port specified\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
newnameserver->addr = *sk;
}
else if (strcmp(args[0], "parse-resolv-conf") == 0) {
const char *whitespace = "\r\n\t ";
char *resolv_line = NULL;
int resolv_linenum = 0;
FILE *f = NULL;
char *address = NULL;
struct sockaddr_storage *sk = NULL;
struct protocol *proto;
int duplicate_name = 0;
if ((resolv_line = malloc(sizeof(*resolv_line) * LINESIZE)) == NULL) {
ha_alert("parsing [%s:%d] : out of memory.\n",
file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto resolv_out;
}
if ((f = fopen("/etc/resolv.conf", "r")) == NULL) {
ha_alert("parsing [%s:%d] : failed to open /etc/resolv.conf.\n",
file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto resolv_out;
}
sk = calloc(1, sizeof(*sk));
if (sk == NULL) {
ha_alert("parsing [/etc/resolv.conf:%d] : out of memory.\n",
resolv_linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto resolv_out;
}
while (fgets(resolv_line, LINESIZE, f) != NULL) {
resolv_linenum++;
if (strncmp(resolv_line, "nameserver", 10) != 0)
continue;
address = strtok(resolv_line + 10, whitespace);
if (address == resolv_line + 10)
continue;
if (address == NULL) {
ha_warning("parsing [/etc/resolv.conf:%d] : nameserver line is missing address.\n",
resolv_linenum);
err_code |= ERR_WARN;
continue;
}
duplicate_name = 0;
list_for_each_entry(newnameserver, &curr_resolvers->nameservers, list) {
if (strcmp(newnameserver->id, address) == 0) {
ha_warning("Parsing [/etc/resolv.conf:%d] : generated name for /etc/resolv.conf nameserver '%s' conflicts with another nameserver (declared at %s:%d), it appears to be a duplicate and will be excluded.\n",
resolv_linenum, address, newnameserver->conf.file, newnameserver->conf.line);
err_code |= ERR_WARN;
duplicate_name = 1;
}
}
if (duplicate_name)
continue;
memset(sk, 0, sizeof(*sk));
sk = str2ip2(address, sk, 1);
if (!sk) {
ha_warning("parsing [/etc/resolv.conf:%d] : address '%s' could not be recognized, namerserver will be excluded.\n",
resolv_linenum, address);
err_code |= ERR_WARN;
continue;
}
set_host_port(sk, 53);
proto = protocol_by_family(sk->ss_family);
if (!proto || !proto->connect) {
ha_warning("parsing [/etc/resolv.conf:%d] : '%s' : connect() not supported for this address family.\n",
resolv_linenum, address);
err_code |= ERR_WARN;
continue;
}
if ((newnameserver = calloc(1, sizeof(*newnameserver))) == NULL) {
ha_alert("parsing [/etc/resolv.conf:%d] : out of memory.\n", resolv_linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto resolv_out;
}
newnameserver->conf.file = strdup("/etc/resolv.conf");
if (newnameserver->conf.file == NULL) {
ha_alert("parsing [/etc/resolv.conf:%d] : out of memory.\n", resolv_linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto resolv_out;
}
newnameserver->id = strdup(address);
if (newnameserver->id == NULL) {
ha_alert("parsing [/etc/resolv.conf:%d] : out of memory.\n", resolv_linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto resolv_out;
}
newnameserver->resolvers = curr_resolvers;
newnameserver->conf.line = resolv_linenum;
newnameserver->addr = *sk;
LIST_ADDQ(&curr_resolvers->nameservers, &newnameserver->list);
}
resolv_out:
free(sk);
free(resolv_line);
if (f != NULL)
fclose(f);
}
else if (strcmp(args[0], "hold") == 0) { /* hold periods */
const char *res;
unsigned int time;
if (!*args[2]) {
ha_alert("parsing [%s:%d] : '%s' expects an <event> and a <time> as arguments.\n",
file, linenum, args[0]);
ha_alert("<event> can be either 'valid', 'nx', 'refused', 'timeout', or 'other'\n");
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
res = parse_time_err(args[2], &time, TIME_UNIT_MS);
if (res == PARSE_TIME_OVER) {
ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s>, maximum value is 2147483647 ms (~24.8 days).\n",
file, linenum, args[1], args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (res == PARSE_TIME_UNDER) {
ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s>, minimum non-null value is 1 ms.\n",
file, linenum, args[1], args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (res) {
ha_alert("parsing [%s:%d]: unexpected character '%c' in argument to <%s>.\n",
file, linenum, *res, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (strcmp(args[1], "nx") == 0)
curr_resolvers->hold.nx = time;
else if (strcmp(args[1], "other") == 0)
curr_resolvers->hold.other = time;
else if (strcmp(args[1], "refused") == 0)
curr_resolvers->hold.refused = time;
else if (strcmp(args[1], "timeout") == 0)
curr_resolvers->hold.timeout = time;
else if (strcmp(args[1], "valid") == 0)
curr_resolvers->hold.valid = time;
else if (strcmp(args[1], "obsolete") == 0)
curr_resolvers->hold.obsolete = time;
else {
ha_alert("parsing [%s:%d] : '%s' unknown <event>: '%s', expects either 'nx', 'timeout', 'valid', 'obsolete' or 'other'.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (strcmp(args[0], "accepted_payload_size") == 0) {
int i = 0;
if (!*args[1]) {
ha_alert("parsing [%s:%d] : '%s' expects <nb> as argument.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
i = atoi(args[1]);
if (i < DNS_HEADER_SIZE || i > DNS_MAX_UDP_MESSAGE) {
ha_alert("parsing [%s:%d] : '%s' must be between %d and %d inclusive (was %s).\n",
file, linenum, args[0], DNS_HEADER_SIZE, DNS_MAX_UDP_MESSAGE, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
curr_resolvers->accepted_payload_size = i;
}
else if (strcmp(args[0], "resolution_pool_size") == 0) {
ha_alert("parsing [%s:%d] : '%s' directive is not supported anymore (it never appeared in a stable release).\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (strcmp(args[0], "resolve_retries") == 0) {
if (!*args[1]) {
ha_alert("parsing [%s:%d] : '%s' expects <nb> as argument.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
curr_resolvers->resolve_retries = atoi(args[1]);
}
else if (strcmp(args[0], "timeout") == 0) {
if (!*args[1]) {
ha_alert("parsing [%s:%d] : '%s' expects 'retry' or 'resolve' and <time> as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (strcmp(args[1], "retry") == 0 ||
strcmp(args[1], "resolve") == 0) {
const char *res;
unsigned int tout;
if (!*args[2]) {
ha_alert("parsing [%s:%d] : '%s %s' expects <time> as argument.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
res = parse_time_err(args[2], &tout, TIME_UNIT_MS);
if (res == PARSE_TIME_OVER) {
ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s %s>, maximum value is 2147483647 ms (~24.8 days).\n",
file, linenum, args[2], args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (res == PARSE_TIME_UNDER) {
ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s %s>, minimum non-null value is 1 ms.\n",
file, linenum, args[2], args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (res) {
ha_alert("parsing [%s:%d]: unexpected character '%c' in argument to <%s %s>.\n",
file, linenum, *res, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (args[1][2] == 't')
curr_resolvers->timeout.retry = tout;
else
curr_resolvers->timeout.resolve = tout;
}
else {
ha_alert("parsing [%s:%d] : '%s' expects 'retry' or 'resolve' and <time> as arguments got '%s'.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
} /* neither "nameserver" nor "resolvers" */
else if (*args[0] != 0) {
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section\n", file, linenum, args[0], cursection);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
out:
free(errmsg);
return err_code;
}
/*
* Parse a line in a <listen>, <frontend> or <backend> section.
* Returns the error code, 0 if OK, or any combination of :
* - ERR_ABORT: must abort ASAP
* - ERR_FATAL: we can continue parsing but not start the service
* - ERR_WARN: a warning has been emitted
* - ERR_ALERT: an alert has been emitted
* Only the two first ones can stop processing, the two others are just
* indicators.
*/
int cfg_parse_mailers(const char *file, int linenum, char **args, int kwm)
{
static struct mailers *curmailers = NULL;
struct mailer *newmailer = NULL;
const char *err;
int err_code = 0;
char *errmsg = NULL;
if (strcmp(args[0], "mailers") == 0) { /* new mailers section */
if (!*args[1]) {
ha_alert("parsing [%s:%d] : missing name for mailers section.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in '%s' name '%s'.\n",
file, linenum, *err, args[0], args[1]);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
for (curmailers = mailers; curmailers != NULL; curmailers = curmailers->next) {
/*
* If there are two proxies with the same name only following
* combinations are allowed:
*/
if (strcmp(curmailers->id, args[1]) == 0) {
ha_alert("Parsing [%s:%d]: mailers section '%s' has the same name as another mailers section declared at %s:%d.\n",
file, linenum, args[1], curmailers->conf.file, curmailers->conf.line);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
if ((curmailers = calloc(1, sizeof(*curmailers))) == NULL) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curmailers->next = mailers;
mailers = curmailers;
curmailers->conf.file = strdup(file);
curmailers->conf.line = linenum;
curmailers->id = strdup(args[1]);
curmailers->timeout.mail = DEF_MAILALERTTIME;/* XXX: Would like to Skip to the next alert, if any, ASAP.
* But need enough time so that timeouts don't occur
* during tcp procssing. For now just us an arbitrary default. */
}
else if (strcmp(args[0], "mailer") == 0) { /* mailer definition */
struct sockaddr_storage *sk;
int port1, port2;
struct protocol *proto;
if (!*args[2]) {
ha_alert("parsing [%s:%d] : '%s' expects <name> and <addr>[:<port>] as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in server name '%s'.\n",
file, linenum, *err, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if ((newmailer = calloc(1, sizeof(*newmailer))) == NULL) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
/* the mailers are linked backwards first */
curmailers->count++;
newmailer->next = curmailers->mailer_list;
curmailers->mailer_list = newmailer;
newmailer->mailers = curmailers;
newmailer->conf.file = strdup(file);
newmailer->conf.line = linenum;
newmailer->id = strdup(args[1]);
sk = str2sa_range(args[2], NULL, &port1, &port2, &errmsg, NULL, NULL, 1);
if (!sk) {
ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
proto = protocol_by_family(sk->ss_family);
if (!proto || !proto->connect || proto->sock_prot != IPPROTO_TCP) {
ha_alert("parsing [%s:%d] : '%s %s' : TCP not supported for this address family.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (port1 != port2) {
ha_alert("parsing [%s:%d] : '%s %s' : port ranges and offsets are not allowed in '%s'\n",
file, linenum, args[0], args[1], args[2]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (!port1) {
ha_alert("parsing [%s:%d] : '%s %s' : missing or invalid port in '%s'\n",
file, linenum, args[0], args[1], args[2]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
newmailer->addr = *sk;
newmailer->proto = proto;
newmailer->xprt = xprt_get(XPRT_RAW);
newmailer->sock_init_arg = NULL;
}
else if (strcmp(args[0], "timeout") == 0) {
if (!*args[1]) {
ha_alert("parsing [%s:%d] : '%s' expects 'mail' and <time> as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (strcmp(args[1], "mail") == 0) {
const char *res;
unsigned int timeout_mail;
if (!*args[2]) {
ha_alert("parsing [%s:%d] : '%s %s' expects <time> as argument.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
res = parse_time_err(args[2], &timeout_mail, TIME_UNIT_MS);
if (res == PARSE_TIME_OVER) {
ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s %s>, maximum value is 2147483647 ms (~24.8 days).\n",
file, linenum, args[2], args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (res == PARSE_TIME_UNDER) {
ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s %s>, minimum non-null value is 1 ms.\n",
file, linenum, args[2], args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
else if (res) {
ha_alert("parsing [%s:%d]: unexpected character '%c' in argument to <%s %s>.\n",
file, linenum, *res, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
curmailers->timeout.mail = timeout_mail;
} else {
ha_alert("parsing [%s:%d] : '%s' expects 'mail' and <time> as arguments got '%s'.\n",
file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (*args[0] != 0) {
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section\n", file, linenum, args[0], cursection);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
out:
free(errmsg);
return err_code;
}
void free_email_alert(struct proxy *p)
{
free(p->email_alert.mailers.name);
p->email_alert.mailers.name = NULL;
free(p->email_alert.from);
p->email_alert.from = NULL;
free(p->email_alert.to);
p->email_alert.to = NULL;
free(p->email_alert.myhostname);
p->email_alert.myhostname = NULL;
}
int
cfg_parse_netns(const char *file, int linenum, char **args, int kwm)
{
#ifdef USE_NS
const char *err;
const char *item = args[0];
if (!strcmp(item, "namespace_list")) {
return 0;
}
else if (!strcmp(item, "namespace")) {
size_t idx = 1;
const char *current;
while (*(current = args[idx++])) {
err = invalid_char(current);
if (err) {
ha_alert("parsing [%s:%d]: character '%c' is not permitted in '%s' name '%s'.\n",
file, linenum, *err, item, current);
return ERR_ALERT | ERR_FATAL;
}
if (netns_store_lookup(current, strlen(current))) {
ha_alert("parsing [%s:%d]: Namespace '%s' is already added.\n",
file, linenum, current);
return ERR_ALERT | ERR_FATAL;
}
if (!netns_store_insert(current)) {
ha_alert("parsing [%s:%d]: Cannot open namespace '%s'.\n",
file, linenum, current);
return ERR_ALERT | ERR_FATAL;
}
}
}
return 0;
#else
ha_alert("parsing [%s:%d]: namespace support is not compiled in.",
file, linenum);
return ERR_ALERT | ERR_FATAL;
#endif
}
int
cfg_parse_users(const char *file, int linenum, char **args, int kwm)
{
int err_code = 0;
const char *err;
if (!strcmp(args[0], "userlist")) { /* new userlist */
struct userlist *newul;
if (!*args[1]) {
ha_alert("parsing [%s:%d]: '%s' expects <name> as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (alertif_too_many_args(1, file, linenum, args, &err_code))
goto out;
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d]: character '%c' is not permitted in '%s' name '%s'.\n",
file, linenum, *err, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
for (newul = userlist; newul; newul = newul->next)
if (!strcmp(newul->name, args[1])) {
ha_warning("parsing [%s:%d]: ignoring duplicated userlist '%s'.\n",
file, linenum, args[1]);
err_code |= ERR_WARN;
goto out;
}
newul = calloc(1, sizeof(*newul));
if (!newul) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
newul->name = strdup(args[1]);
if (!newul->name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
free(newul);
goto out;
}
newul->next = userlist;
userlist = newul;
} else if (!strcmp(args[0], "group")) { /* new group */
int cur_arg;
const char *err;
struct auth_groups *ag;
if (!*args[1]) {
ha_alert("parsing [%s:%d]: '%s' expects <name> as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d]: character '%c' is not permitted in '%s' name '%s'.\n",
file, linenum, *err, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (!userlist)
goto out;
for (ag = userlist->groups; ag; ag = ag->next)
if (!strcmp(ag->name, args[1])) {
ha_warning("parsing [%s:%d]: ignoring duplicated group '%s' in userlist '%s'.\n",
file, linenum, args[1], userlist->name);
err_code |= ERR_ALERT;
goto out;
}
ag = calloc(1, sizeof(*ag));
if (!ag) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
ag->name = strdup(args[1]);
if (!ag->name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
free(ag);
goto out;
}
cur_arg = 2;
while (*args[cur_arg]) {
if (!strcmp(args[cur_arg], "users")) {
ag->groupusers = strdup(args[cur_arg + 1]);
cur_arg += 2;
continue;
} else {
ha_alert("parsing [%s:%d]: '%s' only supports 'users' option.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
free(ag->groupusers);
free(ag->name);
free(ag);
goto out;
}
}
ag->next = userlist->groups;
userlist->groups = ag;
} else if (!strcmp(args[0], "user")) { /* new user */
struct auth_users *newuser;
int cur_arg;
if (!*args[1]) {
ha_alert("parsing [%s:%d]: '%s' expects <name> as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (!userlist)
goto out;
for (newuser = userlist->users; newuser; newuser = newuser->next)
if (!strcmp(newuser->user, args[1])) {
ha_warning("parsing [%s:%d]: ignoring duplicated user '%s' in userlist '%s'.\n",
file, linenum, args[1], userlist->name);
err_code |= ERR_ALERT;
goto out;
}
newuser = calloc(1, sizeof(*newuser));
if (!newuser) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
newuser->user = strdup(args[1]);
newuser->next = userlist->users;
userlist->users = newuser;
cur_arg = 2;
while (*args[cur_arg]) {
if (!strcmp(args[cur_arg], "password")) {
#ifdef USE_LIBCRYPT
if (!crypt("", args[cur_arg + 1])) {
ha_alert("parsing [%s:%d]: the encrypted password used for user '%s' is not supported by crypt(3).\n",
file, linenum, newuser->user);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
#else
ha_warning("parsing [%s:%d]: no crypt(3) support compiled, encrypted passwords will not work.\n",
file, linenum);
err_code |= ERR_ALERT;
#endif
newuser->pass = strdup(args[cur_arg + 1]);
cur_arg += 2;
continue;
} else if (!strcmp(args[cur_arg], "insecure-password")) {
newuser->pass = strdup(args[cur_arg + 1]);
newuser->flags |= AU_O_INSECURE;
cur_arg += 2;
continue;
} else if (!strcmp(args[cur_arg], "groups")) {
newuser->u.groups_names = strdup(args[cur_arg + 1]);
cur_arg += 2;
continue;
} else {
ha_alert("parsing [%s:%d]: '%s' only supports 'password', 'insecure-password' and 'groups' options.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
} else {
ha_alert("parsing [%s:%d]: unknown keyword '%s' in '%s' section\n", file, linenum, args[0], "users");
err_code |= ERR_ALERT | ERR_FATAL;
}
out:
return err_code;
}
int
cfg_parse_scope(const char *file, int linenum, char *line)
{
char *beg, *end, *scope = NULL;
int err_code = 0;
const char *err;
beg = line + 1;
end = strchr(beg, ']');
/* Detect end of scope declaration */
if (!end || end == beg) {
ha_alert("parsing [%s:%d] : empty scope name is forbidden.\n",
file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
/* Get scope name and check its validity */
scope = my_strndup(beg, end-beg);
err = invalid_char(scope);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in a scope name.\n",
file, linenum, *err);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
/* Be sure to have a scope declaration alone on its line */
line = end+1;
while (isspace((unsigned char)*line))
line++;
if (*line && *line != '#' && *line != '\n' && *line != '\r') {
ha_alert("parsing [%s:%d] : character '%c' is not permitted after scope declaration.\n",
file, linenum, *line);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
/* We have a valid scope declaration, save it */
free(cfg_scope);
cfg_scope = scope;
scope = NULL;
out:
free(scope);
return err_code;
}
int
cfg_parse_track_sc_num(unsigned int *track_sc_num,
const char *arg, const char *end, char **errmsg)
{
const char *p;
unsigned int num;
p = arg;
num = read_uint64(&arg, end);
if (arg != end) {
memprintf(errmsg, "Wrong track-sc number '%s'", p);
return -1;
}
if (num >= MAX_SESS_STKCTR) {
memprintf(errmsg, "%u track-sc number exceeding "
"%d (MAX_SESS_STKCTR-1) value", num, MAX_SESS_STKCTR - 1);
return -1;
}
*track_sc_num = num;
return 0;
}
/*
* This function reads and parses the configuration file given in the argument.
* Returns the error code, 0 if OK, or any combination of :
* - ERR_ABORT: must abort ASAP
* - ERR_FATAL: we can continue parsing but not start the service
* - ERR_WARN: a warning has been emitted
* - ERR_ALERT: an alert has been emitted
* Only the two first ones can stop processing, the two others are just
* indicators.
*/
int readcfgfile(const char *file)
{
char *thisline;
int linesize = LINESIZE;
FILE *f;
int linenum = 0;
int err_code = 0;
struct cfg_section *cs = NULL, *pcs = NULL;
struct cfg_section *ics;
int readbytes = 0;
if ((thisline = malloc(sizeof(*thisline) * linesize)) == NULL) {
ha_alert("parsing [%s] : out of memory.\n", file);
return -1;
}
if ((f=fopen(file,"r")) == NULL) {
free(thisline);
return -1;
}
next_line:
while (fgets(thisline + readbytes, linesize - readbytes, f) != NULL) {
int arg, kwm = KWM_STD;
char *end;
char *args[MAX_LINE_ARGS + 1];
char *line = thisline;
int dquote = 0; /* double quote */
int squote = 0; /* simple quote */
linenum++;
end = line + strlen(line);
if (end-line == linesize-1 && *(end-1) != '\n') {
/* Check if we reached the limit and the last char is not \n.
* Watch out for the last line without the terminating '\n'!
*/
char *newline;
int newlinesize = linesize * 2;
newline = realloc(thisline, sizeof(*thisline) * newlinesize);
if (newline == NULL) {
ha_alert("parsing [%s:%d]: line too long, cannot allocate memory.\n",
file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
continue;
}
readbytes = linesize - 1;
linesize = newlinesize;
thisline = newline;
continue;
}
readbytes = 0;
/* skip leading spaces */
while (isspace((unsigned char)*line))
line++;
if (*line == '[') {/* This is the beginning if a scope */
err_code |= cfg_parse_scope(file, linenum, line);
goto next_line;
}
arg = 0;
args[arg] = line;
while (*line && arg < MAX_LINE_ARGS) {
if (*line == '"' && !squote) { /* double quote outside single quotes */
if (dquote)
dquote = 0;
else
dquote = 1;
memmove(line, line + 1, end - line);
end--;
}
else if (*line == '\'' && !dquote) { /* single quote outside double quotes */
if (squote)
squote = 0;
else
squote = 1;
memmove(line, line + 1, end - line);
end--;
}
else if (*line == '\\' && !squote) {
/* first, we'll replace \\, \<space>, \#, \r, \n, \t, \xXX with their
* C equivalent value. Other combinations left unchanged (eg: \1).
*/
int skip = 0;
if (line[1] == ' ' || line[1] == '\\' || line[1] == '#') {
*line = line[1];
skip = 1;
}
else if (line[1] == 'r') {
*line = '\r';
skip = 1;
}
else if (line[1] == 'n') {
*line = '\n';
skip = 1;
}
else if (line[1] == 't') {
*line = '\t';
skip = 1;
}
else if (line[1] == 'x') {
if ((line + 3 < end) && ishex(line[2]) && ishex(line[3])) {
unsigned char hex1, hex2;
hex1 = toupper(line[2]) - '0';
hex2 = toupper(line[3]) - '0';
if (hex1 > 9) hex1 -= 'A' - '9' - 1;
if (hex2 > 9) hex2 -= 'A' - '9' - 1;
*line = (hex1<<4) + hex2;
skip = 3;
}
else {
ha_alert("parsing [%s:%d] : invalid or incomplete '\\x' sequence in '%s'.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
}
} else if (line[1] == '"') {
*line = '"';
skip = 1;
} else if (line[1] == '\'') {
*line = '\'';
skip = 1;
} else if (line[1] == '$' && dquote) { /* escaping of $ only inside double quotes */
*line = '$';
skip = 1;
}
if (skip) {
memmove(line + 1, line + 1 + skip, end - (line + skip));
end -= skip;
}
line++;
}
else if ((!squote && !dquote && *line == '#') || *line == '\n' || *line == '\r') {
/* end of string, end of loop */
*line = 0;
break;
}
else if (!squote && !dquote && isspace((unsigned char)*line)) {
/* a non-escaped space is an argument separator */
*line++ = '\0';
while (isspace((unsigned char)*line))
line++;
args[++arg] = line;
}
else if (dquote && *line == '$') {
/* environment variables are evaluated inside double quotes */
char *var_beg;
char *var_end;
char save_char;
char *value;
int val_len;
int newlinesize;
int braces = 0;
var_beg = line + 1;
var_end = var_beg;
if (*var_beg == '{') {
var_beg++;
var_end++;
braces = 1;
}
if (!isalpha((int)(unsigned char)*var_beg) && *var_beg != '_') {
ha_alert("parsing [%s:%d] : Variable expansion: Unrecognized character '%c' in variable name.\n", file, linenum, *var_beg);
err_code |= ERR_ALERT | ERR_FATAL;
goto next_line; /* skip current line */
}
while (isalnum((int)(unsigned char)*var_end) || *var_end == '_')
var_end++;
save_char = *var_end;
*var_end = '\0';
value = getenv(var_beg);
*var_end = save_char;
val_len = value ? strlen(value) : 0;
if (braces) {
if (*var_end == '}') {
var_end++;
braces = 0;
} else {
ha_alert("parsing [%s:%d] : Variable expansion: Mismatched braces.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto next_line; /* skip current line */
}
}
newlinesize = (end - thisline) - (var_end - line) + val_len + 1;
/* if not enough space in thisline */
if (newlinesize > linesize) {
char *newline;
newline = realloc(thisline, newlinesize * sizeof(*thisline));
if (newline == NULL) {
ha_alert("parsing [%s:%d] : Variable expansion: Not enough memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto next_line; /* slip current line */
}
/* recompute pointers if realloc returns a new pointer */
if (newline != thisline) {
int i;
int diff;
for (i = 0; i <= arg; i++) {
diff = args[i] - thisline;
args[i] = newline + diff;
}
diff = var_end - thisline;
var_end = newline + diff;
diff = end - thisline;
end = newline + diff;
diff = line - thisline;
line = newline + diff;
thisline = newline;
}
linesize = newlinesize;
}
/* insert value inside the line */
memmove(line + val_len, var_end, end - var_end + 1);
memcpy(line, value, val_len);
end += val_len - (var_end - line);
line += val_len;
}
else {
line++;
}
}
if (dquote) {
ha_alert("parsing [%s:%d] : Mismatched double quotes.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
}
if (squote) {
ha_alert("parsing [%s:%d] : Mismatched simple quotes.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
}
/* empty line */
if (!**args)
continue;
if (*line) {
/* we had to stop due to too many args.
* Let's terminate the string, print the offending part then cut the
* last arg.
*/
while (*line && *line != '#' && *line != '\n' && *line != '\r')
line++;
*line = '\0';
ha_alert("parsing [%s:%d]: line too long, truncating at word %d, position %ld: <%s>.\n",
file, linenum, arg + 1, (long)(args[arg] - thisline + 1), args[arg]);
err_code |= ERR_ALERT | ERR_FATAL;
args[arg] = line;
}
/* zero out remaining args and ensure that at least one entry
* is zeroed out.
*/
while (++arg <= MAX_LINE_ARGS) {
args[arg] = line;
}
/* check for keyword modifiers "no" and "default" */
if (!strcmp(args[0], "no")) {
char *tmp;
kwm = KWM_NO;
tmp = args[0];
for (arg=0; *args[arg+1]; arg++)
args[arg] = args[arg+1]; // shift args after inversion
*tmp = '\0'; // fix the next arg to \0
args[arg] = tmp;
}
else if (!strcmp(args[0], "default")) {
kwm = KWM_DEF;
for (arg=0; *args[arg+1]; arg++)
args[arg] = args[arg+1]; // shift args after inversion
}
if (kwm != KWM_STD && strcmp(args[0], "option") != 0 &&
strcmp(args[0], "log") != 0 && strcmp(args[0], "busy-polling") != 0 &&
strcmp(args[0], "set-dumpable") != 0 && strcmp(args[0], "strict-limits") != 0 &&
strcmp(args[0], "insecure-fork-wanted") != 0) {
ha_alert("parsing [%s:%d]: negation/default currently "
"supported only for options, log, busy-polling, "
"set-dumpable, strict-limits, and insecure-fork-wanted.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
}
/* detect section start */
list_for_each_entry(ics, &sections, list) {
if (strcmp(args[0], ics->section_name) == 0) {
cursection = ics->section_name;
pcs = cs;
cs = ics;
break;
}
}
if (pcs && pcs->post_section_parser) {
err_code |= pcs->post_section_parser();
if (err_code & ERR_ABORT)
goto err;
}
pcs = NULL;
if (!cs) {
ha_alert("parsing [%s:%d]: unknown keyword '%s' out of section.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
} else {
err_code |= cs->section_parser(file, linenum, args, kwm);
if (err_code & ERR_ABORT)
goto err;
}
}
if (cs && cs->post_section_parser)
err_code |= cs->post_section_parser();
err:
free(cfg_scope);
cfg_scope = NULL;
cursection = NULL;
free(thisline);
fclose(f);
return err_code;
}
/* This function propagates processes from frontend <from> to backend <to> so
* that it is always guaranteed that a backend pointed to by a frontend is
* bound to all of its processes. After that, if the target is a "listen"
* instance, the function recursively descends the target's own targets along
* default_backend and use_backend rules. Since the bits are
* checked first to ensure that <to> is already bound to all processes of
* <from>, there is no risk of looping and we ensure to follow the shortest
* path to the destination.
*
* It is possible to set <to> to NULL for the first call so that the function
* takes care of visiting the initial frontend in <from>.
*
* It is important to note that the function relies on the fact that all names
* have already been resolved.
*/
void propagate_processes(struct proxy *from, struct proxy *to)
{
struct switching_rule *rule;
if (to) {
/* check whether we need to go down */
if (from->bind_proc &&
(from->bind_proc & to->bind_proc) == from->bind_proc)
return;
if (!from->bind_proc && !to->bind_proc)
return;
to->bind_proc = from->bind_proc ?
(to->bind_proc | from->bind_proc) : 0;
/* now propagate down */
from = to;
}
if (!(from->cap & PR_CAP_FE))
return;
if (from->state == PR_STSTOPPED)
return;
/* default_backend */
if (from->defbe.be)
propagate_processes(from, from->defbe.be);
/* use_backend */
list_for_each_entry(rule, &from->switching_rules, list) {
if (rule->dynamic)
continue;
to = rule->be.backend;
propagate_processes(from, to);
}
}
/*
* Returns the error code, 0 if OK, or any combination of :
* - ERR_ABORT: must abort ASAP
* - ERR_FATAL: we can continue parsing but not start the service
* - ERR_WARN: a warning has been emitted
* - ERR_ALERT: an alert has been emitted
* Only the two first ones can stop processing, the two others are just
* indicators.
*/
int check_config_validity()
{
int cfgerr = 0;
struct proxy *curproxy = NULL;
struct stktable *t;
struct server *newsrv = NULL;
int err_code = 0;
unsigned int next_pxid = 1;
struct bind_conf *bind_conf;
char *err;
struct cfg_postparser *postparser;
struct dns_resolvers *curr_resolvers = NULL;
bind_conf = NULL;
/*
* Now, check for the integrity of all that we have collected.
*/
/* will be needed further to delay some tasks */
tv_update_date(0,1);
if (!global.tune.max_http_hdr)
global.tune.max_http_hdr = MAX_HTTP_HDR;
if (!global.tune.cookie_len)
global.tune.cookie_len = CAPTURE_LEN;
if (!global.tune.requri_len)
global.tune.requri_len = REQURI_LEN;
if (!global.nbthread) {
/* nbthread not set, thus automatic. In this case, and only if
* running on a single process, we enable the same number of
* threads as the number of CPUs the process is bound to. This
* allows to easily control the number of threads using taskset.
*/
global.nbthread = 1;
#if defined(USE_THREAD)
if (global.nbproc == 1)
global.nbthread = thread_cpus_enabled_at_boot;
all_threads_mask = nbits(global.nbthread);
#endif
}
if (global.nbproc > 1 && global.nbthread > 1) {
ha_alert("config : cannot enable multiple processes if multiple threads are configured. Please use either nbproc or nbthread but not both.\n");
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
pool_head_requri = create_pool("requri", global.tune.requri_len , MEM_F_SHARED);
pool_head_capture = create_pool("capture", global.tune.cookie_len, MEM_F_SHARED);
/* Post initialisation of the users and groups lists. */
err_code = userlist_postinit();
if (err_code != ERR_NONE)
goto out;
/* first, we will invert the proxy list order */
curproxy = NULL;
while (proxies_list) {
struct proxy *next;
next = proxies_list->next;
proxies_list->next = curproxy;
curproxy = proxies_list;
if (!next)
break;
proxies_list = next;
}
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
struct switching_rule *rule;
struct server_rule *srule;
struct sticking_rule *mrule;
struct act_rule *arule;
struct logsrv *tmplogsrv;
unsigned int next_id;
int nbproc;
if (curproxy->uuid < 0) {
/* proxy ID not set, use automatic numbering with first
* spare entry starting with next_pxid.
*/
next_pxid = get_next_id(&used_proxy_id, next_pxid);
curproxy->conf.id.key = curproxy->uuid = next_pxid;
eb32_insert(&used_proxy_id, &curproxy->conf.id);
}
next_pxid++;
if (curproxy->state == PR_STSTOPPED) {
/* ensure we don't keep listeners uselessly bound */
stop_proxy(curproxy);
if (curproxy->table) {
free((void *)curproxy->table->peers.name);
curproxy->table->peers.p = NULL;
}
continue;
}
/* Check multi-process mode compatibility for the current proxy */
if (curproxy->bind_proc) {
/* an explicit bind-process was specified, let's check how many
* processes remain.
*/
nbproc = my_popcountl(curproxy->bind_proc);
curproxy->bind_proc &= all_proc_mask;
if (!curproxy->bind_proc && nbproc == 1) {
ha_warning("Proxy '%s': the process specified on the 'bind-process' directive refers to a process number that is higher than global.nbproc. The proxy has been forced to run on process 1 only.\n", curproxy->id);
curproxy->bind_proc = 1;
}
else if (!curproxy->bind_proc && nbproc > 1) {
ha_warning("Proxy '%s': all processes specified on the 'bind-process' directive refer to numbers that are all higher than global.nbproc. The directive was ignored and the proxy will run on all processes.\n", curproxy->id);
curproxy->bind_proc = 0;
}
}
/* check and reduce the bind-proc of each listener */
list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
unsigned long mask;
/* HTTP frontends with "h2" as ALPN/NPN will work in
* HTTP/2 and absolutely require buffers 16kB or larger.
*/
#ifdef USE_OPENSSL
if (curproxy->mode == PR_MODE_HTTP && global.tune.bufsize < 16384) {
#ifdef OPENSSL_NPN_NEGOTIATED
/* check NPN */
if (bind_conf->ssl_conf.npn_str && strstr(bind_conf->ssl_conf.npn_str, "\002h2")) {
ha_alert("config : HTTP frontend '%s' enables HTTP/2 via NPN at [%s:%d], so global.tune.bufsize must be at least 16384 bytes (%d now).\n",
curproxy->id, bind_conf->file, bind_conf->line, global.tune.bufsize);
cfgerr++;
}
#endif
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
/* check ALPN */
if (bind_conf->ssl_conf.alpn_str && strstr(bind_conf->ssl_conf.alpn_str, "\002h2")) {
ha_alert("config : HTTP frontend '%s' enables HTTP/2 via ALPN at [%s:%d], so global.tune.bufsize must be at least 16384 bytes (%d now).\n",
curproxy->id, bind_conf->file, bind_conf->line, global.tune.bufsize);
cfgerr++;
}
#endif
} /* HTTP && bufsize < 16384 */
#endif
/* detect and address thread affinity inconsistencies */
mask = thread_mask(bind_conf->bind_thread);
if (!(mask & all_threads_mask)) {
unsigned long new_mask = 0;
while (mask) {
new_mask |= mask & all_threads_mask;
mask >>= global.nbthread;
}
bind_conf->bind_thread = new_mask;
ha_warning("Proxy '%s': the thread range specified on the 'process' directive of 'bind %s' at [%s:%d] only refers to thread numbers out of the range defined by the global 'nbthread' directive. The thread numbers were remapped to existing threads instead (mask 0x%lx).\n",
curproxy->id, bind_conf->arg, bind_conf->file, bind_conf->line, new_mask);
}
/* detect process and nbproc affinity inconsistencies */
mask = proc_mask(bind_conf->bind_proc) & proc_mask(curproxy->bind_proc);
if (!(mask & all_proc_mask)) {
mask = proc_mask(curproxy->bind_proc) & all_proc_mask;
nbproc = my_popcountl(bind_conf->bind_proc);
bind_conf->bind_proc = proc_mask(bind_conf->bind_proc) & mask;
if (!bind_conf->bind_proc && nbproc == 1) {
ha_warning("Proxy '%s': the process number specified on the 'process' directive of 'bind %s' at [%s:%d] refers to a process not covered by the proxy. This has been fixed by forcing it to run on the proxy's first process only.\n",
curproxy->id, bind_conf->arg, bind_conf->file, bind_conf->line);
bind_conf->bind_proc = mask & ~(mask - 1);
}
else if (!bind_conf->bind_proc && nbproc > 1) {
ha_warning("Proxy '%s': the process range specified on the 'process' directive of 'bind %s' at [%s:%d] only refers to processes not covered by the proxy. The directive was ignored so that all of the proxy's processes are used.\n",
curproxy->id, bind_conf->arg, bind_conf->file, bind_conf->line);
bind_conf->bind_proc = 0;
}
}
}
switch (curproxy->mode) {
case PR_MODE_HEALTH:
cfgerr += proxy_cfg_ensure_no_http(curproxy);
if (!(curproxy->cap & PR_CAP_FE)) {
ha_alert("config : %s '%s' cannot be in health mode as it has no frontend capability.\n",
proxy_type_str(curproxy), curproxy->id);
cfgerr++;
}
if (curproxy->srv != NULL)
ha_warning("config : servers will be ignored for %s '%s'.\n",
proxy_type_str(curproxy), curproxy->id);
break;
case PR_MODE_TCP:
cfgerr += proxy_cfg_ensure_no_http(curproxy);
break;
case PR_MODE_HTTP:
curproxy->http_needed = 1;
break;
case PR_MODE_CLI:
cfgerr += proxy_cfg_ensure_no_http(curproxy);
break;
}
if (curproxy != global.stats_fe && (curproxy->cap & PR_CAP_FE) && LIST_ISEMPTY(&curproxy->conf.listeners)) {
ha_warning("config : %s '%s' has no 'bind' directive. Please declare it as a backend if this was intended.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
if ((curproxy->cap & PR_CAP_BE) && (curproxy->mode != PR_MODE_HEALTH)) {
if (curproxy->lbprm.algo & BE_LB_KIND) {
if (curproxy->options & PR_O_TRANSP) {
ha_alert("config : %s '%s' cannot use both transparent and balance mode.\n",
proxy_type_str(curproxy), curproxy->id);
cfgerr++;
}
#ifdef WE_DONT_SUPPORT_SERVERLESS_LISTENERS
else if (curproxy->srv == NULL) {
ha_alert("config : %s '%s' needs at least 1 server in balance mode.\n",
proxy_type_str(curproxy), curproxy->id);
cfgerr++;
}
#endif
else if (curproxy->options & PR_O_DISPATCH) {
ha_warning("config : dispatch address of %s '%s' will be ignored in balance mode.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
}
else if (!(curproxy->options & (PR_O_TRANSP | PR_O_DISPATCH | PR_O_HTTP_PROXY))) {
/* If no LB algo is set in a backend, and we're not in
* transparent mode, dispatch mode nor proxy mode, we
* want to use balance roundrobin by default.
*/
curproxy->lbprm.algo &= ~BE_LB_ALGO;
curproxy->lbprm.algo |= BE_LB_ALGO_RR;
}
}
if (curproxy->options & PR_O_DISPATCH)
curproxy->options &= ~(PR_O_TRANSP | PR_O_HTTP_PROXY);
else if (curproxy->options & PR_O_HTTP_PROXY)
curproxy->options &= ~(PR_O_DISPATCH | PR_O_TRANSP);
else if (curproxy->options & PR_O_TRANSP)
curproxy->options &= ~(PR_O_DISPATCH | PR_O_HTTP_PROXY);
if ((curproxy->options2 & PR_O2_CHK_ANY) != PR_O2_HTTP_CHK) {
if (curproxy->options & PR_O_DISABLE404) {
ha_warning("config : '%s' will be ignored for %s '%s' (requires 'option httpchk').\n",
"disable-on-404", proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->options &= ~PR_O_DISABLE404;
}
if (curproxy->options2 & PR_O2_CHK_SNDST) {
ha_warning("config : '%s' will be ignored for %s '%s' (requires 'option httpchk').\n",
"send-state", proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->options &= ~PR_O2_CHK_SNDST;
}
}
if ((curproxy->options2 & PR_O2_CHK_ANY) == PR_O2_EXT_CHK) {
if (!global.external_check) {
ha_alert("Proxy '%s' : '%s' unable to find required 'global.external-check'.\n",
curproxy->id, "option external-check");
cfgerr++;
}
if (!curproxy->check_command) {
ha_alert("Proxy '%s' : '%s' unable to find required 'external-check command'.\n",
curproxy->id, "option external-check");
cfgerr++;
}
if (!(global.tune.options & GTUNE_INSECURE_FORK)) {
ha_warning("Proxy '%s' : 'insecure-fork-wanted' not enabled in the global section, '%s' will likely fail.\n",
curproxy->id, "option external-check");
err_code |= ERR_WARN;
}
}
if (curproxy->email_alert.set) {
if (!(curproxy->email_alert.mailers.name && curproxy->email_alert.from && curproxy->email_alert.to)) {
ha_warning("config : 'email-alert' will be ignored for %s '%s' (the presence any of "
"'email-alert from', 'email-alert level' 'email-alert mailers', "
"'email-alert myhostname', or 'email-alert to' "
"requires each of 'email-alert from', 'email-alert mailers' and 'email-alert to' "
"to be present).\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
free_email_alert(curproxy);
}
if (!curproxy->email_alert.myhostname)
curproxy->email_alert.myhostname = strdup(hostname);
}
if (curproxy->check_command) {
int clear = 0;
if ((curproxy->options2 & PR_O2_CHK_ANY) != PR_O2_EXT_CHK) {
ha_warning("config : '%s' will be ignored for %s '%s' (requires 'option external-check').\n",
"external-check command", proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
clear = 1;
}
if (curproxy->check_command[0] != '/' && !curproxy->check_path) {
ha_alert("Proxy '%s': '%s' does not have a leading '/' and 'external-check path' is not set.\n",
curproxy->id, "external-check command");
cfgerr++;
}
if (clear) {
free(curproxy->check_command);
curproxy->check_command = NULL;
}
}
if (curproxy->check_path) {
if ((curproxy->options2 & PR_O2_CHK_ANY) != PR_O2_EXT_CHK) {
ha_warning("config : '%s' will be ignored for %s '%s' (requires 'option external-check').\n",
"external-check path", proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
free(curproxy->check_path);
curproxy->check_path = NULL;
}
}
/* if a default backend was specified, let's find it */
if (curproxy->defbe.name) {
struct proxy *target;
target = proxy_be_by_name(curproxy->defbe.name);
if (!target) {
ha_alert("Proxy '%s': unable to find required default_backend: '%s'.\n",
curproxy->id, curproxy->defbe.name);
cfgerr++;
} else if (target == curproxy) {
ha_alert("Proxy '%s': loop detected for default_backend: '%s'.\n",
curproxy->id, curproxy->defbe.name);
cfgerr++;
} else if (target->mode != curproxy->mode &&
!(curproxy->mode == PR_MODE_TCP && target->mode == PR_MODE_HTTP)) {
ha_alert("%s %s '%s' (%s:%d) tries to use incompatible %s %s '%s' (%s:%d) as its default backend (see 'mode').\n",
proxy_mode_str(curproxy->mode), proxy_type_str(curproxy), curproxy->id,
curproxy->conf.file, curproxy->conf.line,
proxy_mode_str(target->mode), proxy_type_str(target), target->id,
target->conf.file, target->conf.line);
cfgerr++;
} else {
free(curproxy->defbe.name);
curproxy->defbe.be = target;
/* Emit a warning if this proxy also has some servers */
if (curproxy->srv) {
ha_warning("In proxy '%s', the 'default_backend' rule always has precedence over the servers, which will never be used.\n",
curproxy->id);
err_code |= ERR_WARN;
}
}
}
/* find the target proxy for 'use_backend' rules */
list_for_each_entry(rule, &curproxy->switching_rules, list) {
struct proxy *target;
struct logformat_node *node;
char *pxname;
/* Try to parse the string as a log format expression. If the result
* of the parsing is only one entry containing a simple string, then
* it's a standard string corresponding to a static rule, thus the
* parsing is cancelled and be.name is restored to be resolved.
*/
pxname = rule->be.name;
LIST_INIT(&rule->be.expr);
curproxy->conf.args.ctx = ARGC_UBK;
curproxy->conf.args.file = rule->file;
curproxy->conf.args.line = rule->line;
err = NULL;
if (!parse_logformat_string(pxname, curproxy, &rule->be.expr, 0, SMP_VAL_FE_HRQ_HDR, &err)) {
ha_alert("Parsing [%s:%d]: failed to parse use_backend rule '%s' : %s.\n",
rule->file, rule->line, pxname, err);
free(err);
cfgerr++;
continue;
}
node = LIST_NEXT(&rule->be.expr, struct logformat_node *, list);
if (!LIST_ISEMPTY(&rule->be.expr)) {
if (node->type != LOG_FMT_TEXT || node->list.n != &rule->be.expr) {
rule->dynamic = 1;
free(pxname);
continue;
}
/* simple string: free the expression and fall back to static rule */
free(node->arg);
free(node);
}
rule->dynamic = 0;
rule->be.name = pxname;
target = proxy_be_by_name(rule->be.name);
if (!target) {
ha_alert("Proxy '%s': unable to find required use_backend: '%s'.\n",
curproxy->id, rule->be.name);
cfgerr++;
} else if (target == curproxy) {
ha_alert("Proxy '%s': loop detected for use_backend: '%s'.\n",
curproxy->id, rule->be.name);
cfgerr++;
} else if (target->mode != curproxy->mode &&
!(curproxy->mode == PR_MODE_TCP && target->mode == PR_MODE_HTTP)) {
ha_alert("%s %s '%s' (%s:%d) tries to use incompatible %s %s '%s' (%s:%d) in a 'use_backend' rule (see 'mode').\n",
proxy_mode_str(curproxy->mode), proxy_type_str(curproxy), curproxy->id,
curproxy->conf.file, curproxy->conf.line,
proxy_mode_str(target->mode), proxy_type_str(target), target->id,
target->conf.file, target->conf.line);
cfgerr++;
} else {
free((void *)rule->be.name);
rule->be.backend = target;
}
}
/* find the target server for 'use_server' rules */
list_for_each_entry(srule, &curproxy->server_rules, list) {
struct server *target = findserver(curproxy, srule->srv.name);
if (!target) {
ha_alert("config : %s '%s' : unable to find server '%s' referenced in a 'use-server' rule.\n",
proxy_type_str(curproxy), curproxy->id, srule->srv.name);
cfgerr++;
continue;
}
free((void *)srule->srv.name);
srule->srv.ptr = target;
}
/* find the target table for 'stick' rules */
list_for_each_entry(mrule, &curproxy->sticking_rules, list) {
struct stktable *target;
curproxy->be_req_ana |= AN_REQ_STICKING_RULES;
if (mrule->flags & STK_IS_STORE)
curproxy->be_rsp_ana |= AN_RES_STORE_RULES;
if (mrule->table.name)
target = stktable_find_by_name(mrule->table.name);
else
target = curproxy->table;
if (!target) {
ha_alert("Proxy '%s': unable to find stick-table '%s'.\n",
curproxy->id, mrule->table.name ? mrule->table.name : curproxy->id);
cfgerr++;
}
else if (!stktable_compatible_sample(mrule->expr, target->type)) {
ha_alert("Proxy '%s': type of fetch not usable with type of stick-table '%s'.\n",
curproxy->id, mrule->table.name ? mrule->table.name : curproxy->id);
cfgerr++;
}
else if (target->proxy && curproxy->bind_proc & ~target->proxy->bind_proc) {
ha_alert("Proxy '%s': stick-table '%s' referenced 'stick-store' rule not present on all processes covered by proxy '%s'.\n",
curproxy->id, target->id, curproxy->id);
cfgerr++;
}
else {
free((void *)mrule->table.name);
mrule->table.t = target;
stktable_alloc_data_type(target, STKTABLE_DT_SERVER_ID, NULL);
stktable_alloc_data_type(target, STKTABLE_DT_SERVER_NAME, NULL);
if (!in_proxies_list(target->proxies_list, curproxy)) {
curproxy->next_stkt_ref = target->proxies_list;
target->proxies_list = curproxy;
}
}
}
/* find the target table for 'store response' rules */
list_for_each_entry(mrule, &curproxy->storersp_rules, list) {
struct stktable *target;
curproxy->be_rsp_ana |= AN_RES_STORE_RULES;
if (mrule->table.name)
target = stktable_find_by_name(mrule->table.name);
else
target = curproxy->table;
if (!target) {
ha_alert("Proxy '%s': unable to find store table '%s'.\n",
curproxy->id, mrule->table.name ? mrule->table.name : curproxy->id);
cfgerr++;
}
else if (!stktable_compatible_sample(mrule->expr, target->type)) {
ha_alert("Proxy '%s': type of fetch not usable with type of stick-table '%s'.\n",
curproxy->id, mrule->table.name ? mrule->table.name : curproxy->id);
cfgerr++;
}
else if (target->proxy && (curproxy->bind_proc & ~target->proxy->bind_proc)) {
ha_alert("Proxy '%s': stick-table '%s' referenced 'stick-store' rule not present on all processes covered by proxy '%s'.\n",
curproxy->id, target->id, curproxy->id);
cfgerr++;
}
else {
free((void *)mrule->table.name);
mrule->table.t = target;
stktable_alloc_data_type(target, STKTABLE_DT_SERVER_ID, NULL);
stktable_alloc_data_type(target, STKTABLE_DT_SERVER_NAME, NULL);
if (!in_proxies_list(target->proxies_list, curproxy)) {
curproxy->next_stkt_ref = target->proxies_list;
target->proxies_list = curproxy;
}
}
}
/* check validity for 'tcp-request' layer 4 rules */
list_for_each_entry(arule, &curproxy->tcp_req.l4_rules, list) {
err = NULL;
if (arule->check_ptr && !arule->check_ptr(arule, curproxy, &err)) {
ha_alert("Proxy '%s': %s.\n", curproxy->id, err);
free(err);
cfgerr++;
}
}
/* check validity for 'tcp-request' layer 5 rules */
list_for_each_entry(arule, &curproxy->tcp_req.l5_rules, list) {
err = NULL;
if (arule->check_ptr && !arule->check_ptr(arule, curproxy, &err)) {
ha_alert("Proxy '%s': %s.\n", curproxy->id, err);
free(err);
cfgerr++;
}
}
/* check validity for 'tcp-request' layer 6 rules */
list_for_each_entry(arule, &curproxy->tcp_req.inspect_rules, list) {
err = NULL;
if (arule->check_ptr && !arule->check_ptr(arule, curproxy, &err)) {
ha_alert("Proxy '%s': %s.\n", curproxy->id, err);
free(err);
cfgerr++;
}
}
/* check validity for 'http-request' layer 7 rules */
list_for_each_entry(arule, &curproxy->http_req_rules, list) {
err = NULL;
if (arule->check_ptr && !arule->check_ptr(arule, curproxy, &err)) {
ha_alert("Proxy '%s': %s.\n", curproxy->id, err);
free(err);
cfgerr++;
}
}
/* check validity for 'http-response' layer 7 rules */
list_for_each_entry(arule, &curproxy->http_res_rules, list) {
err = NULL;
if (arule->check_ptr && !arule->check_ptr(arule, curproxy, &err)) {
ha_alert("Proxy '%s': %s.\n", curproxy->id, err);
free(err);
cfgerr++;
}
}
if (curproxy->table && curproxy->table->peers.name) {
struct peers *curpeers;
for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
if (strcmp(curpeers->id, curproxy->table->peers.name) == 0) {
free((void *)curproxy->table->peers.name);
curproxy->table->peers.p = curpeers;
break;
}
}
if (!curpeers) {
ha_alert("Proxy '%s': unable to find sync peers '%s'.\n",
curproxy->id, curproxy->table->peers.name);
free((void *)curproxy->table->peers.name);
curproxy->table->peers.p = NULL;
cfgerr++;
}
else if (curpeers->state == PR_STSTOPPED) {
/* silently disable this peers section */
curproxy->table->peers.p = NULL;
}
else if (!curpeers->peers_fe) {
ha_alert("Proxy '%s': unable to find local peer '%s' in peers section '%s'.\n",
curproxy->id, localpeer, curpeers->id);
curproxy->table->peers.p = NULL;
cfgerr++;
}
}
if (curproxy->email_alert.mailers.name) {
struct mailers *curmailers = mailers;
for (curmailers = mailers; curmailers; curmailers = curmailers->next) {
if (!strcmp(curmailers->id, curproxy->email_alert.mailers.name))
break;
}
if (!curmailers) {
ha_alert("Proxy '%s': unable to find mailers '%s'.\n",
curproxy->id, curproxy->email_alert.mailers.name);
free_email_alert(curproxy);
cfgerr++;
}
else {
err = NULL;
if (init_email_alert(curmailers, curproxy, &err)) {
ha_alert("Proxy '%s': %s.\n", curproxy->id, err);
free(err);
cfgerr++;
}
}
}
if (curproxy->uri_auth && curproxy->uri_auth != defproxy.uri_auth &&
!LIST_ISEMPTY(&curproxy->uri_auth->http_req_rules) &&
(curproxy->uri_auth->userlist || curproxy->uri_auth->auth_realm )) {
ha_alert("%s '%s': stats 'auth'/'realm' and 'http-request' can't be used at the same time.\n",
"proxy", curproxy->id);
cfgerr++;
goto out_uri_auth_compat;
}
if (curproxy->uri_auth && curproxy->uri_auth->userlist &&
(curproxy->uri_auth != defproxy.uri_auth ||
LIST_ISEMPTY(&curproxy->uri_auth->http_req_rules))) {
const char *uri_auth_compat_req[10];
struct act_rule *rule;
int i = 0;
/* build the ACL condition from scratch. We're relying on anonymous ACLs for that */
uri_auth_compat_req[i++] = "auth";
if (curproxy->uri_auth->auth_realm) {
uri_auth_compat_req[i++] = "realm";
uri_auth_compat_req[i++] = curproxy->uri_auth->auth_realm;
}
uri_auth_compat_req[i++] = "unless";
uri_auth_compat_req[i++] = "{";
uri_auth_compat_req[i++] = "http_auth(.internal-stats-userlist)";
uri_auth_compat_req[i++] = "}";
uri_auth_compat_req[i++] = "";
rule = parse_http_req_cond(uri_auth_compat_req, "internal-stats-auth-compat", 0, curproxy);
if (!rule) {
cfgerr++;
break;
}
LIST_ADDQ(&curproxy->uri_auth->http_req_rules, &rule->list);
if (curproxy->uri_auth->auth_realm) {
free(curproxy->uri_auth->auth_realm);
curproxy->uri_auth->auth_realm = NULL;
}
}
out_uri_auth_compat:
/* check whether we have a log server that uses RFC5424 log format */
list_for_each_entry(tmplogsrv, &curproxy->logsrvs, list) {
if (tmplogsrv->format == LOG_FORMAT_RFC5424) {
if (!curproxy->conf.logformat_sd_string) {
/* set the default logformat_sd_string */
curproxy->conf.logformat_sd_string = default_rfc5424_sd_log_format;
}
break;
}
}
/* compile the log format */
if (!(curproxy->cap & PR_CAP_FE)) {
if (curproxy->conf.logformat_string != default_http_log_format &&
curproxy->conf.logformat_string != default_tcp_log_format &&
curproxy->conf.logformat_string != clf_http_log_format)
free(curproxy->conf.logformat_string);
curproxy->conf.logformat_string = NULL;
free(curproxy->conf.lfs_file);
curproxy->conf.lfs_file = NULL;
curproxy->conf.lfs_line = 0;
if (curproxy->conf.logformat_sd_string != default_rfc5424_sd_log_format)
free(curproxy->conf.logformat_sd_string);
curproxy->conf.logformat_sd_string = NULL;
free(curproxy->conf.lfsd_file);
curproxy->conf.lfsd_file = NULL;
curproxy->conf.lfsd_line = 0;
}
if (curproxy->conf.logformat_string) {
curproxy->conf.args.ctx = ARGC_LOG;
curproxy->conf.args.file = curproxy->conf.lfs_file;
curproxy->conf.args.line = curproxy->conf.lfs_line;
err = NULL;
if (!parse_logformat_string(curproxy->conf.logformat_string, curproxy, &curproxy->logformat, LOG_OPT_MANDATORY,
SMP_VAL_FE_LOG_END, &err)) {
ha_alert("Parsing [%s:%d]: failed to parse log-format : %s.\n",
curproxy->conf.lfs_file, curproxy->conf.lfs_line, err);
free(err);
cfgerr++;
}
curproxy->conf.args.file = NULL;
curproxy->conf.args.line = 0;
}
if (curproxy->conf.logformat_sd_string) {
curproxy->conf.args.ctx = ARGC_LOGSD;
curproxy->conf.args.file = curproxy->conf.lfsd_file;
curproxy->conf.args.line = curproxy->conf.lfsd_line;
err = NULL;
if (!parse_logformat_string(curproxy->conf.logformat_sd_string, curproxy, &curproxy->logformat_sd, LOG_OPT_MANDATORY,
SMP_VAL_FE_LOG_END, &err)) {
ha_alert("Parsing [%s:%d]: failed to parse log-format-sd : %s.\n",
curproxy->conf.lfs_file, curproxy->conf.lfs_line, err);
free(err);
cfgerr++;
} else if (!add_to_logformat_list(NULL, NULL, LF_SEPARATOR, &curproxy->logformat_sd, &err)) {
ha_alert("Parsing [%s:%d]: failed to parse log-format-sd : %s.\n",
curproxy->conf.lfs_file, curproxy->conf.lfs_line, err);
free(err);
cfgerr++;
}
curproxy->conf.args.file = NULL;
curproxy->conf.args.line = 0;
}
if (curproxy->conf.uniqueid_format_string) {
curproxy->conf.args.ctx = ARGC_UIF;
curproxy->conf.args.file = curproxy->conf.uif_file;
curproxy->conf.args.line = curproxy->conf.uif_line;
err = NULL;
if (!parse_logformat_string(curproxy->conf.uniqueid_format_string, curproxy, &curproxy->format_unique_id, LOG_OPT_HTTP,
(curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &err)) {
ha_alert("Parsing [%s:%d]: failed to parse unique-id : %s.\n",
curproxy->conf.uif_file, curproxy->conf.uif_line, err);
free(err);
cfgerr++;
}
curproxy->conf.args.file = NULL;
curproxy->conf.args.line = 0;
}
/* only now we can check if some args remain unresolved.
* This must be done after the users and groups resolution.
*/
cfgerr += smp_resolve_args(curproxy);
if (!cfgerr)
cfgerr += acl_find_targets(curproxy);
if ((curproxy->mode == PR_MODE_TCP || curproxy->mode == PR_MODE_HTTP) &&
(((curproxy->cap & PR_CAP_FE) && !curproxy->timeout.client) ||
((curproxy->cap & PR_CAP_BE) && (curproxy->srv) &&
(!curproxy->timeout.connect ||
(!curproxy->timeout.server && (curproxy->mode == PR_MODE_HTTP || !curproxy->timeout.tunnel)))))) {
ha_warning("config : missing timeouts for %s '%s'.\n"
" | While not properly invalid, you will certainly encounter various problems\n"
" | with such a configuration. To fix this, please ensure that all following\n"
" | timeouts are set to a non-zero value: 'client', 'connect', 'server'.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
/* Historically, the tarpit and queue timeouts were inherited from contimeout.
* We must still support older configurations, so let's find out whether those
* parameters have been set or must be copied from contimeouts.
*/
if (curproxy != &defproxy) {
if (!curproxy->timeout.tarpit ||
curproxy->timeout.tarpit == defproxy.timeout.tarpit) {
/* tarpit timeout not set. We search in the following order:
* default.tarpit, curr.connect, default.connect.
*/
if (defproxy.timeout.tarpit)
curproxy->timeout.tarpit = defproxy.timeout.tarpit;
else if (curproxy->timeout.connect)
curproxy->timeout.tarpit = curproxy->timeout.connect;
else if (defproxy.timeout.connect)
curproxy->timeout.tarpit = defproxy.timeout.connect;
}
if ((curproxy->cap & PR_CAP_BE) &&
(!curproxy->timeout.queue ||
curproxy->timeout.queue == defproxy.timeout.queue)) {
/* queue timeout not set. We search in the following order:
* default.queue, curr.connect, default.connect.
*/
if (defproxy.timeout.queue)
curproxy->timeout.queue = defproxy.timeout.queue;
else if (curproxy->timeout.connect)
curproxy->timeout.queue = curproxy->timeout.connect;
else if (defproxy.timeout.connect)
curproxy->timeout.queue = defproxy.timeout.connect;
}
}
if ((curproxy->options2 & PR_O2_CHK_ANY) == PR_O2_SSL3_CHK) {
curproxy->check_len = sizeof(sslv3_client_hello_pkt) - 1;
curproxy->check_req = malloc(curproxy->check_len);
memcpy(curproxy->check_req, sslv3_client_hello_pkt, curproxy->check_len);
}
if (!LIST_ISEMPTY(&curproxy->tcpcheck_rules) &&
(curproxy->options2 & PR_O2_CHK_ANY) != PR_O2_TCPCHK_CHK) {
ha_warning("config : %s '%s' uses tcp-check rules without 'option tcp-check', so the rules are ignored.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
/* ensure that cookie capture length is not too large */
if (curproxy->capture_len >= global.tune.cookie_len) {
ha_warning("config : truncating capture length to %d bytes for %s '%s'.\n",
global.tune.cookie_len - 1, proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->capture_len = global.tune.cookie_len - 1;
}
/* The small pools required for the capture lists */
if (curproxy->nb_req_cap) {
curproxy->req_cap_pool = create_pool("ptrcap",
curproxy->nb_req_cap * sizeof(char *),
MEM_F_SHARED);
}
if (curproxy->nb_rsp_cap) {
curproxy->rsp_cap_pool = create_pool("ptrcap",
curproxy->nb_rsp_cap * sizeof(char *),
MEM_F_SHARED);
}
switch (curproxy->load_server_state_from_file) {
case PR_SRV_STATE_FILE_UNSPEC:
curproxy->load_server_state_from_file = PR_SRV_STATE_FILE_NONE;
break;
case PR_SRV_STATE_FILE_GLOBAL:
if (!global.server_state_file) {
ha_warning("config : backend '%s' configured to load server state file from global section 'server-state-file' directive. Unfortunately, 'server-state-file' is not set!\n",
curproxy->id);
err_code |= ERR_WARN;
}
break;
}
/* first, we will invert the servers list order */
newsrv = NULL;
while (curproxy->srv) {
struct server *next;
next = curproxy->srv->next;
curproxy->srv->next = newsrv;
newsrv = curproxy->srv;
if (!next)
break;
curproxy->srv = next;
}
/* Check that no server name conflicts. This causes trouble in the stats.
* We only emit a warning for the first conflict affecting each server,
* in order to avoid combinatory explosion if all servers have the same
* name. We do that only for servers which do not have an explicit ID,
* because these IDs were made also for distinguishing them and we don't
* want to annoy people who correctly manage them.
*/
for (newsrv = curproxy->srv; newsrv; newsrv = newsrv->next) {
struct server *other_srv;
if (newsrv->puid)
continue;
for (other_srv = curproxy->srv; other_srv && other_srv != newsrv; other_srv = other_srv->next) {
if (!other_srv->puid && strcmp(other_srv->id, newsrv->id) == 0) {
ha_alert("parsing [%s:%d] : %s '%s', another server named '%s' was already defined at line %d, please use distinct names.\n",
newsrv->conf.file, newsrv->conf.line,
proxy_type_str(curproxy), curproxy->id,
newsrv->id, other_srv->conf.line);
cfgerr++;
break;
}
}
}
/* assign automatic UIDs to servers which don't have one yet */
next_id = 1;
newsrv = curproxy->srv;
while (newsrv != NULL) {
if (!newsrv->puid) {
/* server ID not set, use automatic numbering with first
* spare entry starting with next_svid.
*/
next_id = get_next_id(&curproxy->conf.used_server_id, next_id);
newsrv->conf.id.key = newsrv->puid = next_id;
eb32_insert(&curproxy->conf.used_server_id, &newsrv->conf.id);
newsrv->conf.name.key = newsrv->id;
ebis_insert(&curproxy->conf.used_server_name, &newsrv->conf.name);
}
next_id++;
newsrv = newsrv->next;
}
curproxy->lbprm.wmult = 1; /* default weight multiplier */
curproxy->lbprm.wdiv = 1; /* default weight divider */
/*
* If this server supports a maxconn parameter, it needs a dedicated
* tasks to fill the emptied slots when a connection leaves.
* Also, resolve deferred tracking dependency if needed.
*/
newsrv = curproxy->srv;
while (newsrv != NULL) {
if (newsrv->minconn > newsrv->maxconn) {
/* Only 'minconn' was specified, or it was higher than or equal
* to 'maxconn'. Let's turn this into maxconn and clean it, as
* this will avoid further useless expensive computations.
*/
newsrv->maxconn = newsrv->minconn;
} else if (newsrv->maxconn && !newsrv->minconn) {
/* minconn was not specified, so we set it to maxconn */
newsrv->minconn = newsrv->maxconn;
}
/* this will also properly set the transport layer for prod and checks */
if (newsrv->use_ssl || newsrv->check.use_ssl) {
if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->prepare_srv)
cfgerr += xprt_get(XPRT_SSL)->prepare_srv(newsrv);
}
if ((newsrv->flags & SRV_F_FASTOPEN) &&
((curproxy->retry_type & (PR_RE_DISCONNECTED | PR_RE_TIMEOUT)) !=
(PR_RE_DISCONNECTED | PR_RE_TIMEOUT)))
ha_warning("parsing [%s:%d] : %s '%s': server '%s' has tfo activated, the backend should be configured with at least 'conn-failure', 'empty-response' and 'response-timeout' or we wouldn't be able to retry the connection on failure.\n",
newsrv->conf.file, newsrv->conf.line,
proxy_type_str(curproxy), curproxy->id,
newsrv->id);
/* set the check type on the server */
newsrv->check.type = curproxy->options2 & PR_O2_CHK_ANY;
if (newsrv->trackit) {
struct proxy *px;
struct server *srv, *loop;
char *pname, *sname;
pname = newsrv->trackit;
sname = strrchr(pname, '/');
if (sname)
*sname++ = '\0';
else {
sname = pname;
pname = NULL;
}
if (pname) {
px = proxy_be_by_name(pname);
if (!px) {
ha_alert("config : %s '%s', server '%s': unable to find required proxy '%s' for tracking.\n",
proxy_type_str(curproxy), curproxy->id,
newsrv->id, pname);
cfgerr++;
goto next_srv;
}
} else
px = curproxy;
srv = findserver(px, sname);
if (!srv) {
ha_alert("config : %s '%s', server '%s': unable to find required server '%s' for tracking.\n",
proxy_type_str(curproxy), curproxy->id,
newsrv->id, sname);
cfgerr++;
goto next_srv;
}
if (!(srv->check.state & CHK_ST_CONFIGURED) &&
!(srv->agent.state & CHK_ST_CONFIGURED) &&
!srv->track && !srv->trackit) {
ha_alert("config : %s '%s', server '%s': unable to use %s/%s for "
"tracking as it does not have any check nor agent enabled.\n",
proxy_type_str(curproxy), curproxy->id,
newsrv->id, px->id, srv->id);
cfgerr++;
goto next_srv;
}
for (loop = srv->track; loop && loop != newsrv; loop = loop->track);
if (newsrv == srv || loop) {
ha_alert("config : %s '%s', server '%s': unable to track %s/%s as it "
"belongs to a tracking chain looping back to %s/%s.\n",
proxy_type_str(curproxy), curproxy->id,
newsrv->id, px->id, srv->id, px->id,
newsrv == srv ? srv->id : loop->id);
cfgerr++;
goto next_srv;
}
if (curproxy != px &&
(curproxy->options & PR_O_DISABLE404) != (px->options & PR_O_DISABLE404)) {
ha_alert("config : %s '%s', server '%s': unable to use %s/%s for"
"tracking: disable-on-404 option inconsistency.\n",
proxy_type_str(curproxy), curproxy->id,
newsrv->id, px->id, srv->id);
cfgerr++;
goto next_srv;
}
newsrv->track = srv;
newsrv->tracknext = srv->trackers;
srv->trackers = newsrv;
free(newsrv->trackit);
newsrv->trackit = NULL;
}
next_srv:
newsrv = newsrv->next;
}
/*
* Try to generate dynamic cookies for servers now.
* It couldn't be done earlier, since at the time we parsed
* the server line, we may not have known yet that we
* should use dynamic cookies, or the secret key may not
* have been provided yet.
*/
if (curproxy->ck_opts & PR_CK_DYNAMIC) {
newsrv = curproxy->srv;
while (newsrv != NULL) {
srv_set_dyncookie(newsrv);
newsrv = newsrv->next;
}
}
/* We have to initialize the server lookup mechanism depending
* on what LB algorithm was chosen.
*/
curproxy->lbprm.algo &= ~(BE_LB_LKUP | BE_LB_PROP_DYN);
switch (curproxy->lbprm.algo & BE_LB_KIND) {
case BE_LB_KIND_RR:
if ((curproxy->lbprm.algo & BE_LB_PARM) == BE_LB_RR_STATIC) {
curproxy->lbprm.algo |= BE_LB_LKUP_MAP;
init_server_map(curproxy);
} else if ((curproxy->lbprm.algo & BE_LB_PARM) == BE_LB_RR_RANDOM) {
curproxy->lbprm.algo |= BE_LB_LKUP_CHTREE | BE_LB_PROP_DYN;
chash_init_server_tree(curproxy);
} else {
curproxy->lbprm.algo |= BE_LB_LKUP_RRTREE | BE_LB_PROP_DYN;
fwrr_init_server_groups(curproxy);
}
break;
case BE_LB_KIND_CB:
if ((curproxy->lbprm.algo & BE_LB_PARM) == BE_LB_CB_LC) {
curproxy->lbprm.algo |= BE_LB_LKUP_LCTREE | BE_LB_PROP_DYN;
fwlc_init_server_tree(curproxy);
} else {
curproxy->lbprm.algo |= BE_LB_LKUP_FSTREE | BE_LB_PROP_DYN;
fas_init_server_tree(curproxy);
}
break;
case BE_LB_KIND_HI:
if ((curproxy->lbprm.algo & BE_LB_HASH_TYPE) == BE_LB_HASH_CONS) {
curproxy->lbprm.algo |= BE_LB_LKUP_CHTREE | BE_LB_PROP_DYN;
chash_init_server_tree(curproxy);
} else {
curproxy->lbprm.algo |= BE_LB_LKUP_MAP;
init_server_map(curproxy);
}
break;
}
HA_SPIN_INIT(&curproxy->lbprm.lock);
if (curproxy->options & PR_O_LOGASAP)
curproxy->to_log &= ~LW_BYTES;
if ((curproxy->mode == PR_MODE_TCP || curproxy->mode == PR_MODE_HTTP) &&
(curproxy->cap & PR_CAP_FE) && LIST_ISEMPTY(&curproxy->logsrvs) &&
(!LIST_ISEMPTY(&curproxy->logformat) || !LIST_ISEMPTY(&curproxy->logformat_sd))) {
ha_warning("config : log format ignored for %s '%s' since it has no log address.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
if (curproxy->mode != PR_MODE_HTTP) {
int optnum;
if (curproxy->uri_auth) {
ha_warning("config : 'stats' statement ignored for %s '%s' as it requires HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->uri_auth = NULL;
}
if (curproxy->capture_name) {
ha_warning("config : 'capture' statement ignored for %s '%s' as it requires HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
if (!LIST_ISEMPTY(&curproxy->http_req_rules)) {
ha_warning("config : 'http-request' rules ignored for %s '%s' as they require HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
if (!LIST_ISEMPTY(&curproxy->http_res_rules)) {
ha_warning("config : 'http-response' rules ignored for %s '%s' as they require HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
if (!LIST_ISEMPTY(&curproxy->redirect_rules)) {
ha_warning("config : 'redirect' rules ignored for %s '%s' as they require HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
if (curproxy->options & (PR_O_FWDFOR | PR_O_FF_ALWAYS)) {
ha_warning("config : 'option %s' ignored for %s '%s' as it requires HTTP mode.\n",
"forwardfor", proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->options &= ~(PR_O_FWDFOR | PR_O_FF_ALWAYS);
}
if (curproxy->options & PR_O_ORGTO) {
ha_warning("config : 'option %s' ignored for %s '%s' as it requires HTTP mode.\n",
"originalto", proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->options &= ~PR_O_ORGTO;
}
for (optnum = 0; cfg_opts[optnum].name; optnum++) {
if (cfg_opts[optnum].mode == PR_MODE_HTTP &&
(curproxy->cap & cfg_opts[optnum].cap) &&
(curproxy->options & cfg_opts[optnum].val)) {
ha_warning("config : 'option %s' ignored for %s '%s' as it requires HTTP mode.\n",
cfg_opts[optnum].name, proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->options &= ~cfg_opts[optnum].val;
}
}
for (optnum = 0; cfg_opts2[optnum].name; optnum++) {
if (cfg_opts2[optnum].mode == PR_MODE_HTTP &&
(curproxy->cap & cfg_opts2[optnum].cap) &&
(curproxy->options2 & cfg_opts2[optnum].val)) {
ha_warning("config : 'option %s' ignored for %s '%s' as it requires HTTP mode.\n",
cfg_opts2[optnum].name, proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
curproxy->options2 &= ~cfg_opts2[optnum].val;
}
}
#if defined(CONFIG_HAP_TRANSPARENT)
if (curproxy->conn_src.bind_hdr_occ) {
curproxy->conn_src.bind_hdr_occ = 0;
ha_warning("config : %s '%s' : ignoring use of header %s as source IP in non-HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id, curproxy->conn_src.bind_hdr_name);
err_code |= ERR_WARN;
}
#endif
}
/*
* ensure that we're not cross-dressing a TCP server into HTTP.
*/
newsrv = curproxy->srv;
while (newsrv != NULL) {
if ((curproxy->mode != PR_MODE_HTTP) && newsrv->rdr_len) {
ha_alert("config : %s '%s' : server cannot have cookie or redirect prefix in non-HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id);
cfgerr++;
}
if ((curproxy->mode != PR_MODE_HTTP) && newsrv->cklen) {
ha_warning("config : %s '%s' : ignoring cookie for server '%s' as HTTP mode is disabled.\n",
proxy_type_str(curproxy), curproxy->id, newsrv->id);
err_code |= ERR_WARN;
}
if ((newsrv->flags & SRV_F_MAPPORTS) && (curproxy->options2 & PR_O2_RDPC_PRST)) {
ha_warning("config : %s '%s' : RDP cookie persistence will not work for server '%s' because it lacks an explicit port number.\n",
proxy_type_str(curproxy), curproxy->id, newsrv->id);
err_code |= ERR_WARN;
}
#if defined(CONFIG_HAP_TRANSPARENT)
if (curproxy->mode != PR_MODE_HTTP && newsrv->conn_src.bind_hdr_occ) {
newsrv->conn_src.bind_hdr_occ = 0;
ha_warning("config : %s '%s' : server %s cannot use header %s as source IP in non-HTTP mode.\n",
proxy_type_str(curproxy), curproxy->id, newsrv->id, newsrv->conn_src.bind_hdr_name);
err_code |= ERR_WARN;
}
#endif
if ((curproxy->mode != PR_MODE_HTTP) && (curproxy->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR)
curproxy->options &= ~PR_O_REUSE_MASK;
newsrv = newsrv->next;
}
/* Check filter configuration, if any */
cfgerr += flt_check(curproxy);
if (curproxy->cap & PR_CAP_FE) {
if (!curproxy->accept)
curproxy->accept = frontend_accept;
if (curproxy->tcp_req.inspect_delay ||
!LIST_ISEMPTY(&curproxy->tcp_req.inspect_rules))
curproxy->fe_req_ana |= AN_REQ_INSPECT_FE;
if (curproxy->mode == PR_MODE_HTTP) {
curproxy->fe_req_ana |= AN_REQ_WAIT_HTTP | AN_REQ_HTTP_PROCESS_FE;
curproxy->fe_rsp_ana |= AN_RES_WAIT_HTTP | AN_RES_HTTP_PROCESS_FE;
}
if (curproxy->mode == PR_MODE_CLI) {
curproxy->fe_req_ana |= AN_REQ_WAIT_CLI;
curproxy->fe_rsp_ana |= AN_RES_WAIT_CLI;
}
/* both TCP and HTTP must check switching rules */
curproxy->fe_req_ana |= AN_REQ_SWITCHING_RULES;
/* Add filters analyzers if needed */
if (!LIST_ISEMPTY(&curproxy->filter_configs)) {
curproxy->fe_req_ana |= AN_REQ_FLT_START_FE | AN_REQ_FLT_XFER_DATA | AN_REQ_FLT_END;
curproxy->fe_rsp_ana |= AN_RES_FLT_START_FE | AN_RES_FLT_XFER_DATA | AN_RES_FLT_END;
if (curproxy->mode == PR_MODE_HTTP) {
curproxy->fe_req_ana |= AN_REQ_FLT_HTTP_HDRS;
curproxy->fe_rsp_ana |= AN_RES_FLT_HTTP_HDRS;
}
}
}
if (curproxy->cap & PR_CAP_BE) {
if (curproxy->tcp_req.inspect_delay ||
!LIST_ISEMPTY(&curproxy->tcp_req.inspect_rules))
curproxy->be_req_ana |= AN_REQ_INSPECT_BE;
if (!LIST_ISEMPTY(&curproxy->tcp_rep.inspect_rules))
curproxy->be_rsp_ana |= AN_RES_INSPECT;
if (curproxy->mode == PR_MODE_HTTP) {
curproxy->be_req_ana |= AN_REQ_WAIT_HTTP | AN_REQ_HTTP_INNER | AN_REQ_HTTP_PROCESS_BE;
curproxy->be_rsp_ana |= AN_RES_WAIT_HTTP | AN_RES_HTTP_PROCESS_BE;
}
/* If the backend does requires RDP cookie persistence, we have to
* enable the corresponding analyser.
*/
if (curproxy->options2 & PR_O2_RDPC_PRST)
curproxy->be_req_ana |= AN_REQ_PRST_RDP_COOKIE;
/* Add filters analyzers if needed */
if (!LIST_ISEMPTY(&curproxy->filter_configs)) {
curproxy->be_req_ana |= AN_REQ_FLT_START_BE | AN_REQ_FLT_XFER_DATA | AN_REQ_FLT_END;
curproxy->be_rsp_ana |= AN_RES_FLT_START_BE | AN_RES_FLT_XFER_DATA | AN_RES_FLT_END;
if (curproxy->mode == PR_MODE_HTTP) {
curproxy->be_req_ana |= AN_REQ_FLT_HTTP_HDRS;
curproxy->be_rsp_ana |= AN_RES_FLT_HTTP_HDRS;
}
}
}
/* Check the mux protocols, if any, for each listener and server
* attached to the current proxy */
list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
int mode = (1 << (curproxy->mode == PR_MODE_HTTP));
const struct mux_proto_list *mux_ent;
if (!bind_conf->mux_proto)
continue;
/* it is possible that an incorrect mux was referenced
* due to the proxy's mode not being taken into account
* on first pass. Let's adjust it now.
*/
mux_ent = conn_get_best_mux_entry(bind_conf->mux_proto->token, PROTO_SIDE_FE, mode);
if (!mux_ent || !isteq(mux_ent->token, bind_conf->mux_proto->token)) {
ha_alert("config : %s '%s' : MUX protocol '%.*s' is not usable for 'bind %s' at [%s:%d].\n",
proxy_type_str(curproxy), curproxy->id,
(int)bind_conf->mux_proto->token.len,
bind_conf->mux_proto->token.ptr,
bind_conf->arg, bind_conf->file, bind_conf->line);
cfgerr++;
}
/* update the mux */
bind_conf->mux_proto = mux_ent;
}
for (newsrv = curproxy->srv; newsrv; newsrv = newsrv->next) {
int mode = (1 << (curproxy->mode == PR_MODE_HTTP));
const struct mux_proto_list *mux_ent;
if (!newsrv->mux_proto)
continue;
/* it is possible that an incorrect mux was referenced
* due to the proxy's mode not being taken into account
* on first pass. Let's adjust it now.
*/
mux_ent = conn_get_best_mux_entry(newsrv->mux_proto->token, PROTO_SIDE_BE, mode);
if (!mux_ent || !isteq(mux_ent->token, newsrv->mux_proto->token)) {
ha_alert("config : %s '%s' : MUX protocol '%.*s' is not usable for server '%s' at [%s:%d].\n",
proxy_type_str(curproxy), curproxy->id,
(int)newsrv->mux_proto->token.len,
newsrv->mux_proto->token.ptr,
newsrv->id, newsrv->conf.file, newsrv->conf.line);
cfgerr++;
}
/* update the mux */
newsrv->mux_proto = mux_ent;
}
/* initialize idle conns lists */
for (newsrv = curproxy->srv; newsrv; newsrv = newsrv->next) {
int i;
newsrv->priv_conns = calloc(global.nbthread, sizeof(*newsrv->priv_conns));
newsrv->idle_conns = calloc(global.nbthread, sizeof(*newsrv->idle_conns));
newsrv->safe_conns = calloc(global.nbthread, sizeof(*newsrv->safe_conns));
if (!newsrv->priv_conns || !newsrv->idle_conns || !newsrv->safe_conns) {
free(newsrv->safe_conns); newsrv->safe_conns = NULL;
free(newsrv->idle_conns); newsrv->idle_conns = NULL;
free(newsrv->priv_conns); newsrv->priv_conns = NULL;
ha_alert("parsing [%s:%d] : failed to allocate idle connections for server '%s'.\n",
newsrv->conf.file, newsrv->conf.line, newsrv->id);
cfgerr++;
continue;
}
for (i = 0; i < global.nbthread; i++) {
LIST_INIT(&newsrv->priv_conns[i]);
LIST_INIT(&newsrv->idle_conns[i]);
LIST_INIT(&newsrv->safe_conns[i]);
}
if (newsrv->max_idle_conns != 0) {
if (idle_conn_task == NULL) {
idle_conn_task = task_new(MAX_THREADS_MASK);
if (!idle_conn_task)
goto err;
idle_conn_task->process = srv_cleanup_idle_connections;
idle_conn_task->context = NULL;
for (i = 0; i < global.nbthread; i++) {
idle_conn_cleanup[i] = task_new(1UL << i);
if (!idle_conn_cleanup[i])
goto err;
idle_conn_cleanup[i]->process = srv_cleanup_toremove_connections;
idle_conn_cleanup[i]->context = NULL;
MT_LIST_INIT(&toremove_connections[i]);
}
}
newsrv->idle_orphan_conns = calloc((unsigned short)global.nbthread, sizeof(*newsrv->idle_orphan_conns));
if (!newsrv->idle_orphan_conns)
goto err;
for (i = 0; i < global.nbthread; i++)
MT_LIST_INIT(&newsrv->idle_orphan_conns[i]);
newsrv->curr_idle_thr = calloc(global.nbthread, sizeof(int));
if (!newsrv->curr_idle_thr)
goto err;
continue;
err:
ha_alert("parsing [%s:%d] : failed to allocate idle connection tasks for server '%s'.\n",
newsrv->conf.file, newsrv->conf.line, newsrv->id);
cfgerr++;
continue;
}
}
}
/***********************************************************/
/* At this point, target names have already been resolved. */
/***********************************************************/
/* Check multi-process mode compatibility */
if (global.nbproc > 1 && global.stats_fe) {
list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
unsigned long mask;
mask = proc_mask(global.stats_fe->bind_proc) && all_proc_mask;
mask &= proc_mask(bind_conf->bind_proc);
/* stop here if more than one process is used */
if (atleast2(mask))
break;
}
if (&bind_conf->by_fe != &global.stats_fe->conf.bind) {
ha_warning("stats socket will not work as expected in multi-process mode (nbproc > 1), you should force process binding globally using 'stats bind-process' or per socket using the 'process' attribute.\n");
}
}
/* Make each frontend inherit bind-process from its listeners when not specified. */
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
if (curproxy->bind_proc)
continue;
list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
unsigned long mask;
mask = proc_mask(bind_conf->bind_proc);
curproxy->bind_proc |= mask;
}
curproxy->bind_proc = proc_mask(curproxy->bind_proc);
}
if (global.stats_fe) {
list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
unsigned long mask;
mask = bind_conf->bind_proc ? bind_conf->bind_proc : 0;
global.stats_fe->bind_proc |= mask;
}
global.stats_fe->bind_proc = proc_mask(global.stats_fe->bind_proc);
}
/* propagate bindings from frontends to backends. Don't do it if there
* are any fatal errors as we must not call it with unresolved proxies.
*/
if (!cfgerr) {
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
if (curproxy->cap & PR_CAP_FE)
propagate_processes(curproxy, NULL);
}
}
/* Bind each unbound backend to all processes when not specified. */
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next)
curproxy->bind_proc = proc_mask(curproxy->bind_proc);
/*******************************************************/
/* At this step, all proxies have a non-null bind_proc */
/*******************************************************/
/* perform the final checks before creating tasks */
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
struct listener *listener;
unsigned int next_id;
/* Configure SSL for each bind line.
* Note: if configuration fails at some point, the ->ctx member
* remains NULL so that listeners can later detach.
*/
list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
if (bind_conf->xprt->prepare_bind_conf &&
bind_conf->xprt->prepare_bind_conf(bind_conf) < 0)
cfgerr++;
}
/* adjust this proxy's listeners */
next_id = 1;
list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
int nbproc;
nbproc = my_popcountl(curproxy->bind_proc &
(listener->bind_conf->bind_proc ? listener->bind_conf->bind_proc : curproxy->bind_proc) &
all_proc_mask);
if (!nbproc) /* no intersection between listener and frontend */
nbproc = 1;
if (!listener->luid) {
/* listener ID not set, use automatic numbering with first
* spare entry starting with next_luid.
*/
next_id = get_next_id(&curproxy->conf.used_listener_id, next_id);
listener->conf.id.key = listener->luid = next_id;
eb32_insert(&curproxy->conf.used_listener_id, &listener->conf.id);
}
next_id++;
/* enable separate counters */
if (curproxy->options2 & PR_O2_SOCKSTAT) {
listener->counters = calloc(1, sizeof(*listener->counters));
if (!listener->name)
memprintf(&listener->name, "sock-%d", listener->luid);
}
if (curproxy->options & PR_O_TCP_NOLING)
listener->options |= LI_O_NOLINGER;
if (!listener->maxaccept)
listener->maxaccept = global.tune.maxaccept ? global.tune.maxaccept : 64;
/* we want to have an optimal behaviour on single process mode to
* maximize the work at once, but in multi-process we want to keep
* some fairness between processes, so we target half of the max
* number of events to be balanced over all the processes the proxy
* is bound to. Rememeber that maxaccept = -1 must be kept as it is
* used to disable the limit.
*/
if (listener->maxaccept > 0 && nbproc > 1) {
listener->maxaccept = (listener->maxaccept + 1) / 2;
listener->maxaccept = (listener->maxaccept + nbproc - 1) / nbproc;
}
listener->accept = session_accept_fd;
listener->analysers |= curproxy->fe_req_ana;
listener->default_target = curproxy->default_target;
if (!LIST_ISEMPTY(&curproxy->tcp_req.l4_rules))
listener->options |= LI_O_TCP_L4_RULES;
if (!LIST_ISEMPTY(&curproxy->tcp_req.l5_rules))
listener->options |= LI_O_TCP_L5_RULES;
if (curproxy->mon_mask.s_addr)
listener->options |= LI_O_CHK_MONNET;
/* smart accept mode is automatic in HTTP mode */
if ((curproxy->options2 & PR_O2_SMARTACC) ||
((curproxy->mode == PR_MODE_HTTP || listener->bind_conf->is_ssl) &&
!(curproxy->no_options2 & PR_O2_SMARTACC)))
listener->options |= LI_O_NOQUICKACK;
}
/* Release unused SSL configs */
list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
if (!bind_conf->is_ssl && bind_conf->xprt->destroy_bind_conf)
bind_conf->xprt->destroy_bind_conf(bind_conf);
}
if (atleast2(curproxy->bind_proc & all_proc_mask)) {
if (curproxy->uri_auth) {
int count, maxproc = 0;
list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
count = my_popcountl(bind_conf->bind_proc);
if (count > maxproc)
maxproc = count;
}
/* backends have 0, frontends have 1 or more */
if (maxproc != 1)
ha_warning("Proxy '%s': in multi-process mode, stats will be"
" limited to process assigned to the current request.\n",
curproxy->id);
if (!LIST_ISEMPTY(&curproxy->uri_auth->admin_rules)) {
ha_warning("Proxy '%s': stats admin will not work correctly in multi-process mode.\n",
curproxy->id);
}
}
if (!LIST_ISEMPTY(&curproxy->sticking_rules)) {
ha_warning("Proxy '%s': sticking rules will not work correctly in multi-process mode.\n",
curproxy->id);
}
}
/* create the task associated with the proxy */
curproxy->task = task_new(MAX_THREADS_MASK);
if (curproxy->task) {
curproxy->task->context = curproxy;
curproxy->task->process = manage_proxy;
} else {
ha_alert("Proxy '%s': no more memory when trying to allocate the management task\n",
curproxy->id);
cfgerr++;
}
}
/*
* Recount currently required checks.
*/
for (curproxy=proxies_list; curproxy; curproxy=curproxy->next) {
int optnum;
for (optnum = 0; cfg_opts[optnum].name; optnum++)
if (curproxy->options & cfg_opts[optnum].val)
global.last_checks |= cfg_opts[optnum].checks;
for (optnum = 0; cfg_opts2[optnum].name; optnum++)
if (curproxy->options2 & cfg_opts2[optnum].val)
global.last_checks |= cfg_opts2[optnum].checks;
}
/* compute the required process bindings for the peers */
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next)
if (curproxy->table && curproxy->table->peers.p)
curproxy->table->peers.p->peers_fe->bind_proc |= curproxy->bind_proc;
/* compute the required process bindings for the peers from <stktables_list>
* for all the stick-tables, the ones coming with "peers" sections included.
*/
for (t = stktables_list; t; t = t->next) {
struct proxy *p;
for (p = t->proxies_list; p; p = p->next_stkt_ref) {
if (t->peers.p && t->peers.p->peers_fe) {
t->peers.p->peers_fe->bind_proc |= p->bind_proc;
}
}
}
if (cfg_peers) {
struct peers *curpeers = cfg_peers, **last;
struct peer *p, *pb;
/* Remove all peers sections which don't have a valid listener,
* which are not used by any table, or which are bound to more
* than one process.
*/
last = &cfg_peers;
while (*last) {
curpeers = *last;
if (curpeers->state == PR_STSTOPPED) {
/* the "disabled" keyword was present */
if (curpeers->peers_fe)
stop_proxy(curpeers->peers_fe);
curpeers->peers_fe = NULL;
}
else if (!curpeers->peers_fe || !curpeers->peers_fe->id) {
ha_warning("Removing incomplete section 'peers %s' (no peer named '%s').\n",
curpeers->id, localpeer);
}
else if (atleast2(curpeers->peers_fe->bind_proc)) {
/* either it's totally stopped or too much used */
if (curpeers->peers_fe->bind_proc) {
ha_alert("Peers section '%s': peers referenced by sections "
"running in different processes (%d different ones). "
"Check global.nbproc and all tables' bind-process "
"settings.\n", curpeers->id, my_popcountl(curpeers->peers_fe->bind_proc));
cfgerr++;
}
stop_proxy(curpeers->peers_fe);
curpeers->peers_fe = NULL;
}
else {
/* Initializes the transport layer of the server part of all the peers belonging to
* <curpeers> section if required.
* Note that ->srv is used by the local peer of a new process to connect to the local peer
* of an old process.
*/
p = curpeers->remote;
while (p) {
if (p->srv) {
if (p->srv->use_ssl && xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->prepare_srv)
cfgerr += xprt_get(XPRT_SSL)->prepare_srv(p->srv);
}
p = p->next;
}
/* Configure the SSL bindings of the local peer if required. */
if (!LIST_ISEMPTY(&curpeers->peers_fe->conf.bind)) {
struct list *l;
struct bind_conf *bind_conf;
l = &curpeers->peers_fe->conf.bind;
bind_conf = LIST_ELEM(l->n, typeof(bind_conf), by_fe);
if (bind_conf->xprt->prepare_bind_conf &&
bind_conf->xprt->prepare_bind_conf(bind_conf) < 0)
cfgerr++;
}
if (!peers_init_sync(curpeers) || !peers_alloc_dcache(curpeers)) {
ha_alert("Peers section '%s': out of memory, giving up on peers.\n",
curpeers->id);
cfgerr++;
break;
}
last = &curpeers->next;
continue;
}
/* clean what has been detected above */
p = curpeers->remote;
while (p) {
pb = p->next;
free(p->id);
free(p);
p = pb;
}
/* Destroy and unlink this curpeers section.
* Note: curpeers is backed up into *last.
*/
free(curpeers->id);
curpeers = curpeers->next;
free(*last);
*last = curpeers;
}
}
for (t = stktables_list; t; t = t->next) {
if (t->proxy)
continue;
if (!stktable_init(t)) {
ha_alert("Proxy '%s': failed to initialize stick-table.\n", t->id);
cfgerr++;
}
}
/* initialize stick-tables on backend capable proxies. This must not
* be done earlier because the data size may be discovered while parsing
* other proxies.
*/
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
if (curproxy->state == PR_STSTOPPED || !curproxy->table)
continue;
if (!stktable_init(curproxy->table)) {
ha_alert("Proxy '%s': failed to initialize stick-table.\n", curproxy->id);
cfgerr++;
}
}
if (mailers) {
struct mailers *curmailers = mailers, **last;
struct mailer *m, *mb;
/* Remove all mailers sections which don't have a valid listener.
* This can happen when a mailers section is never referenced.
*/
last = &mailers;
while (*last) {
curmailers = *last;
if (curmailers->users) {
last = &curmailers->next;
continue;
}
ha_warning("Removing incomplete section 'mailers %s'.\n",
curmailers->id);
m = curmailers->mailer_list;
while (m) {
mb = m->next;
free(m->id);
free(m);
m = mb;
}
/* Destroy and unlink this curmailers section.
* Note: curmailers is backed up into *last.
*/
free(curmailers->id);
curmailers = curmailers->next;
free(*last);
*last = curmailers;
}
}
/* Update server_state_file_name to backend name if backend is supposed to use
* a server-state file locally defined and none has been provided */
for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
if (curproxy->load_server_state_from_file == PR_SRV_STATE_FILE_LOCAL &&
curproxy->server_state_file_name == NULL)
curproxy->server_state_file_name = strdup(curproxy->id);
}
list_for_each_entry(curr_resolvers, &dns_resolvers, list) {
if (LIST_ISEMPTY(&curr_resolvers->nameservers)) {
ha_warning("config : resolvers '%s' [%s:%d] has no nameservers configured!\n",
curr_resolvers->id, curr_resolvers->conf.file,
curr_resolvers->conf.line);
err_code |= ERR_WARN;
}
}
list_for_each_entry(postparser, &postparsers, list) {
if (postparser->func)
cfgerr += postparser->func();
}
if (cfgerr > 0)
err_code |= ERR_ALERT | ERR_FATAL;
out:
return err_code;
}
/*
* Registers the CFG keyword list <kwl> as a list of valid keywords for next
* parsing sessions.
*/
void cfg_register_keywords(struct cfg_kw_list *kwl)
{
LIST_ADDQ(&cfg_keywords.list, &kwl->list);
}
/*
* Unregisters the CFG keyword list <kwl> from the list of valid keywords.
*/
void cfg_unregister_keywords(struct cfg_kw_list *kwl)
{
LIST_DEL(&kwl->list);
LIST_INIT(&kwl->list);
}
/* this function register new section in the haproxy configuration file.
* <section_name> is the name of this new section and <section_parser>
* is the called parser. If two section declaration have the same name,
* only the first declared is used.
*/
int cfg_register_section(char *section_name,
int (*section_parser)(const char *, int, char **, int),
int (*post_section_parser)())
{
struct cfg_section *cs;
list_for_each_entry(cs, &sections, list) {
if (strcmp(cs->section_name, section_name) == 0) {
ha_alert("register section '%s': already registered.\n", section_name);
return 0;
}
}
cs = calloc(1, sizeof(*cs));
if (!cs) {
ha_alert("register section '%s': out of memory.\n", section_name);
return 0;
}
cs->section_name = section_name;
cs->section_parser = section_parser;
cs->post_section_parser = post_section_parser;
LIST_ADDQ(&sections, &cs->list);
return 1;
}
/* this function register a new function which will be called once the haproxy
* configuration file has been parsed. It's useful to check dependencies
* between sections or to resolve items once everything is parsed.
*/
int cfg_register_postparser(char *name, int (*func)())
{
struct cfg_postparser *cp;
cp = calloc(1, sizeof(*cp));
if (!cp) {
ha_alert("register postparser '%s': out of memory.\n", name);
return 0;
}
cp->name = name;
cp->func = func;
LIST_ADDQ(&postparsers, &cp->list);
return 1;
}
/*
* free all config section entries
*/
void cfg_unregister_sections(void)
{
struct cfg_section *cs, *ics;
list_for_each_entry_safe(cs, ics, &sections, list) {
LIST_DEL(&cs->list);
free(cs);
}
}
void cfg_backup_sections(struct list *backup_sections)
{
struct cfg_section *cs, *ics;
list_for_each_entry_safe(cs, ics, &sections, list) {
LIST_DEL(&cs->list);
LIST_ADDQ(backup_sections, &cs->list);
}
}
void cfg_restore_sections(struct list *backup_sections)
{
struct cfg_section *cs, *ics;
list_for_each_entry_safe(cs, ics, backup_sections, list) {
LIST_DEL(&cs->list);
LIST_ADDQ(&sections, &cs->list);
}
}
/* these are the config sections handled by default */
REGISTER_CONFIG_SECTION("listen", cfg_parse_listen, NULL);
REGISTER_CONFIG_SECTION("frontend", cfg_parse_listen, NULL);
REGISTER_CONFIG_SECTION("backend", cfg_parse_listen, NULL);
REGISTER_CONFIG_SECTION("defaults", cfg_parse_listen, NULL);
REGISTER_CONFIG_SECTION("global", cfg_parse_global, NULL);
REGISTER_CONFIG_SECTION("userlist", cfg_parse_users, NULL);
REGISTER_CONFIG_SECTION("peers", cfg_parse_peers, NULL);
REGISTER_CONFIG_SECTION("mailers", cfg_parse_mailers, NULL);
REGISTER_CONFIG_SECTION("namespace_list", cfg_parse_netns, NULL);
REGISTER_CONFIG_SECTION("resolvers", cfg_parse_resolvers, NULL);
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/