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git01.mediatek.com / haproxy / 62de60dcdf7a3e9cdbf3daad3da38044e8a98453 / . / src / cfgparse.c
blob: d62be42ee184ff690a7a417791ff575109f06866 [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.
*
*/
/* This is to have crypt() and sched_setaffinity() defined on Linux */
#define _GNU_SOURCE
#ifdef USE_LIBCRYPT
#ifdef USE_CRYPT_H
/* some platforms such as Solaris need this */
#include <crypt.h>
#endif
#endif /* USE_LIBCRYPT */
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <ctype.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#ifdef USE_CPU_AFFINITY
#include <sched.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <haproxy/acl.h>
#include <haproxy/action.h>
#include <haproxy/api.h>
#include <haproxy/arg.h>
#include <haproxy/auth.h>
#include <haproxy/backend.h>
#include <haproxy/capture.h>
#include <haproxy/cfgparse.h>
#include <haproxy/channel.h>
#include <haproxy/check.h>
#include <haproxy/chunk.h>
#ifdef USE_CPU_AFFINITY
#include <haproxy/cpuset.h>
#endif
#include <haproxy/connection.h>
#include <haproxy/errors.h>
#include <haproxy/filters.h>
#include <haproxy/frontend.h>
#include <haproxy/global.h>
#include <haproxy/http_ana.h>
#include <haproxy/http_rules.h>
#include <haproxy/lb_chash.h>
#include <haproxy/lb_fas.h>
#include <haproxy/lb_fwlc.h>
#include <haproxy/lb_fwrr.h>
#include <haproxy/lb_map.h>
#include <haproxy/listener.h>
#include <haproxy/log.h>
#include <haproxy/sink.h>
#include <haproxy/mailers.h>
#include <haproxy/namespace.h>
#include <haproxy/obj_type-t.h>
#include <haproxy/openssl-compat.h>
#include <haproxy/peers-t.h>
#include <haproxy/peers.h>
#include <haproxy/pool.h>
#include <haproxy/protocol.h>
#include <haproxy/proxy.h>
#include <haproxy/resolvers.h>
#include <haproxy/sample.h>
#include <haproxy/server.h>
#include <haproxy/session.h>
#include <haproxy/stats-t.h>
#include <haproxy/stick_table.h>
#include <haproxy/stream.h>
#include <haproxy/task.h>
#include <haproxy/tcp_rules.h>
#include <haproxy/thread.h>
#include <haproxy/time.h>
#include <haproxy/tools.h>
#include <haproxy/uri_auth-t.h>
#include <haproxy/xprt_quic.h>
/* 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);
extern struct proxy *mworker_proxy;
char *cursection = NULL;
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 */
/* how to handle default paths */
static enum default_path_mode {
DEFAULT_PATH_CURRENT = 0, /* "current": paths are relative to CWD (this is the default) */
DEFAULT_PATH_CONFIG, /* "config": paths are relative to config file */
DEFAULT_PATH_PARENT, /* "parent": paths are relative to config file's ".." */
DEFAULT_PATH_ORIGIN, /* "origin": paths are relative to default_path_origin */
} default_path_mode;
static char initial_cwd[PATH_MAX];
static char current_cwd[PATH_MAX];
/* List head of all known configuration keywords */
struct cfg_kw_list cfg_keywords = {
.list = LIST_HEAD_INIT(cfg_keywords.list)
};
/* nested if/elif/else/endif block states */
enum nested_cond_state {
NESTED_COND_IF_TAKE, // "if" with a true condition
NESTED_COND_IF_DROP, // "if" with a false condition
NESTED_COND_IF_SKIP, // "if" masked by an outer false condition
NESTED_COND_ELIF_TAKE, // "elif" with a true condition from a false one
NESTED_COND_ELIF_DROP, // "elif" with a false condition from a false one
NESTED_COND_ELIF_SKIP, // "elif" masked by an outer false condition or a previously taken if
NESTED_COND_ELSE_TAKE, // taken "else" after an if false condition
NESTED_COND_ELSE_DROP, // "else" masked by outer false condition or an if true condition
};
/* 100 levels of nested conditions should already be sufficient */
#define MAXNESTEDCONDS 100
/* supported conditional predicates for .if/.elif */
enum cond_predicate {
CFG_PRED_NONE, // none
CFG_PRED_DEFINED, // "defined"
CFG_PRED_FEATURE, // "feature"
CFG_PRED_STREQ, // "streq"
CFG_PRED_STRNEQ, // "strneq"
CFG_PRED_VERSION_ATLEAST, // "version_atleast"
CFG_PRED_VERSION_BEFORE, // "version_before"
};
struct cond_pred_kw {
const char *word; // NULL marks the end of the list
enum cond_predicate prd; // one of the CFG_PRED_* above
uint64_t arg_mask; // mask of supported arguments (strings only)
};
/* supported condition predicates */
const struct cond_pred_kw cond_predicates[] = {
{ "defined", CFG_PRED_DEFINED, ARG1(1, STR) },
{ "feature", CFG_PRED_FEATURE, ARG1(1, STR) },
{ "streq", CFG_PRED_STREQ, ARG2(2, STR, STR) },
{ "strneq", CFG_PRED_STRNEQ, ARG2(2, STR, STR) },
{ "version_atleast", CFG_PRED_VERSION_ATLEAST, ARG1(1, STR) },
{ "version_before", CFG_PRED_VERSION_BEFORE, ARG1(1, STR) },
{ NULL, CFG_PRED_NONE, 0 }
};
/*
* 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)
{
struct protocol *proto;
char *next, *dupstr;
int port, end;
next = dupstr = strdup(str);
while (next && *next) {
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, &fd, &proto, err,
(curproxy == global.cli_fe || curproxy == mworker_proxy) ? NULL : global.unix_bind.prefix,
NULL, PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_PORT_RANGE |
PA_O_SOCKET_FD | PA_O_STREAM | PA_O_XPRT);
if (!ss2)
goto fail;
/* OK the address looks correct */
#ifdef USE_QUIC
/* The transport layer automatically switches to QUIC when QUIC
* is selected, regardless of bind_conf settings. We then need
* to initialize QUIC params.
*/
if (proto->sock_type == SOCK_DGRAM && proto->ctrl_type == SOCK_STREAM) {
bind_conf->xprt = xprt_get(XPRT_QUIC);
quic_transport_params_init(&bind_conf->quic_params, 1);
}
#endif
if (!create_listeners(bind_conf, ss2, port, end, fd, proto, err)) {
memprintf(err, "%s for address '%s'.\n", *err, str);
goto fail;
}
} /* end while(next) */
free(dupstr);
return 1;
fail:
free(dupstr);
return 0;
}
/*
* converts <str> to a list of datagram-oriented 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 str2receiver(char *str, struct proxy *curproxy, struct bind_conf *bind_conf, const char *file, int line, char **err)
{
struct protocol *proto;
char *next, *dupstr;
int port, end;
next = dupstr = strdup(str);
while (next && *next) {
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, &fd, &proto, err,
curproxy == global.cli_fe ? NULL : global.unix_bind.prefix,
NULL, PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_PORT_RANGE |
PA_O_SOCKET_FD | PA_O_DGRAM | PA_O_XPRT);
if (!ss2)
goto fail;
/* OK the address looks correct */
if (!create_listeners(bind_conf, ss2, port, end, fd, proto, err)) {
memprintf(err, "%s for address '%s'.\n", *err, str);
goto fail;
}
} /* end while(next) */
free(dupstr);
return 1;
fail:
free(dupstr);
return 0;
}
/*
* Sends a warning if proxy <proxy> does not have at least one of the
* capabilities in <cap>. An optional <hint> may be added at the end
* of the warning to help the user. Returns 1 if a warning was emitted
* or 0 if the condition is valid.
*/
int warnifnotcap(struct proxy *proxy, int cap, const char *file, int line, const char *arg, const char *hint)
{
char *msg;
switch (cap) {
case PR_CAP_BE: msg = "no backend"; break;
case PR_CAP_FE: msg = "no frontend"; break;
case PR_CAP_BE|PR_CAP_FE: msg = "neither frontend nor backend"; break;
default: msg = "not enough"; break;
}
if (!(proxy->cap & cap)) {
ha_warning("parsing [%s:%d] : '%s' ignored because %s '%s' has %s capability.%s\n",
file, line, arg, proxy_type_str(proxy), proxy->id, msg, hint ? hint : "");
return 1;
}
return 0;
}
/*
* Sends an alert if proxy <proxy> does not have at least one of the
* capabilities in <cap>. An optional <hint> may be added at the end
* of the alert to help the user. Returns 1 if an alert was emitted
* or 0 if the condition is valid.
*/
int failifnotcap(struct proxy *proxy, int cap, const char *file, int line, const char *arg, const char *hint)
{
char *msg;
switch (cap) {
case PR_CAP_BE: msg = "no backend"; break;
case PR_CAP_FE: msg = "no frontend"; break;
case PR_CAP_BE|PR_CAP_FE: msg = "neither frontend nor backend"; break;
default: msg = "not enough"; break;
}
if (!(proxy->cap & cap)) {
ha_alert("parsing [%s:%d] : '%s' not allowed because %s '%s' has %s capability.%s\n",
file, line, arg, proxy_type_str(proxy), proxy->id, msg, hint ? hint : "");
return 1;
}
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;
}
/* Report it if an ACL uses a L6 sample fetch from an HTTP proxy. 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_tcp_http_cond(const struct proxy *px, const struct acl_cond *cond)
{
if (!cond || px->mode != PR_MODE_HTTP)
return 0;
if (cond->use & (SMP_USE_L6REQ|SMP_USE_L6RES)) {
ha_warning("Proxy '%s': L6 sample fetches ignored on HTTP proxies (declared at %s:%d).\n",
px->id, cond->file, cond->line);
return ERR_WARN;
}
return 0;
}
/* try to find in <list> the word that looks closest to <word> by counting
* transitions between letters, digits and other characters. Will return the
* best matching word if found, otherwise NULL. An optional array of extra
* words to compare may be passed in <extra>, but it must then be terminated
* by a NULL entry. If unused it may be NULL.
*/
const char *cfg_find_best_match(const char *word, const struct list *list, int section, const char **extra)
{
uint8_t word_sig[1024]; // 0..25=letter, 26=digit, 27=other, 28=begin, 29=end
uint8_t list_sig[1024];
const struct cfg_kw_list *kwl;
int index;
const char *best_ptr = NULL;
int dist, best_dist = INT_MAX;
make_word_fingerprint(word_sig, word);
list_for_each_entry(kwl, list, list) {
for (index = 0; kwl->kw[index].kw != NULL; index++) {
if (kwl->kw[index].section != section)
continue;
make_word_fingerprint(list_sig, kwl->kw[index].kw);
dist = word_fingerprint_distance(word_sig, list_sig);
if (dist < best_dist) {
best_dist = dist;
best_ptr = kwl->kw[index].kw;
}
}
}
while (extra && *extra) {
make_word_fingerprint(list_sig, *extra);
dist = word_fingerprint_distance(word_sig, list_sig);
if (dist < best_dist) {
best_dist = dist;
best_ptr = *extra;
}
extra++;
}
if (best_dist > 2 * strlen(word) || (best_ptr && best_dist > 2 * strlen(best_ptr)))
best_ptr = NULL;
return best_ptr;
}
/* 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((unsigned char)*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
* ha_cpuset_size() - 1 or a range with two such numbers delimited by a dash
* ('-'). If <comma_allowed> is set, each CPU set can be a list of unique
* numbers or ranges separated by a comma. It is also possible to specify
* multiple cpu numbers or ranges in distinct argument in <args>. On success,
* it returns 0, otherwise it returns 1 with an error message in <err>.
*/
unsigned long parse_cpu_set(const char **args, struct hap_cpuset *cpu_set,
int comma_allowed, char **err)
{
int cur_arg = 0;
const char *arg;
ha_cpuset_zero(cpu_set);
arg = args[cur_arg];
while (*arg) {
const char *dash, *comma;
unsigned int low, high;
if (!isdigit((unsigned char)*args[cur_arg])) {
memprintf(err, "'%s' is not a CPU range.", arg);
return -1;
}
low = high = str2uic(arg);
comma = comma_allowed ? strchr(arg, ',') : NULL;
dash = strchr(arg, '-');
if (dash && (!comma || dash < comma))
high = *(dash+1) ? str2uic(dash + 1) : ha_cpuset_size() - 1;
if (high < low) {
unsigned int swap = low;
low = high;
high = swap;
}
if (high >= ha_cpuset_size()) {
memprintf(err, "supports CPU numbers from 0 to %d.",
ha_cpuset_size() - 1);
return 1;
}
while (low <= high)
ha_cpuset_set(cpu_set, low++);
/* if a comma is present, parse the rest of the arg, else
* skip to the next arg */
arg = comma ? comma + 1 : args[++cur_arg];
}
return 0;
}
#endif
/* 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);
/*
* We keep bind_conf->file and bind_conf->line unchanged
* to make them available for error messages
*/
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;
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,
args[1], xprt_get(XPRT_RAW));
if (!bind_conf) {
ha_alert("parsing [%s:%d] : '%s %s' : cannot allocate memory.\n", file, linenum, args[0], args[1]);
err_code |= ERR_FATAL;
goto out;
}
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 (!LIST_ISEMPTY(&bind_conf->listeners)) {
ha_alert("parsing [%s:%d] : One listener per \"peers\" section is authorized but another is already configured at [%s:%d].\n", file, linenum, bind_conf->file, bind_conf->line);
err_code |= ERR_FATAL;
}
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[1]);
err_code |= ERR_FATAL;
goto out;
}
/*
* Newly allocated listener is at the end of the list
*/
l = LIST_ELEM(bind_conf->listeners.p, 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->rx.addr;
newpeer->proto = l->rx.proto;
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) {
const char *best = bind_find_best_kw(args[cur_arg]);
if (best)
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section; did you mean '%s' maybe ?\n",
file, linenum, args[cur_arg], cursection, best);
else
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section.\n",
file, linenum, args[cur_arg], cursection);
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,
SRV_PARSE_DEFAULT_SERVER|SRV_PARSE_IN_PEER_SECTION|SRV_PARSE_INITIAL_RESOLVE);
}
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), file, linenum, &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->disabled = 0;
}
else if (strcmp(args[0], "peer") == 0 ||
strcmp(args[0], "server") == 0) { /* peer or server definition */
int local_peer, peer;
int parse_addr = 0;
peer = *args[0] == 'p';
local_peer = strcmp(args[1], localpeer) == 0;
/* 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.
*/
parse_addr = (peer || !local_peer) ? SRV_PARSE_PARSE_ADDR : 0;
err_code |= parse_server(file, linenum, args, curpeers->peers_fe, NULL,
SRV_PARSE_IN_PEER_SECTION|parse_addr|SRV_PARSE_INITIAL_RESOLVE);
if (!curpeers->peers_fe->srv) {
/* Remove the newly allocated peer. */
if (newpeer != curpeers->local) {
struct peer *p;
p = curpeers->remote;
curpeers->remote = curpeers->remote->next;
free(p->id);
free(p);
}
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 (!bind_conf) {
ha_alert("parsing [%s:%d] : '%s %s' : Cannot allocate memory.\n", file, linenum, args[0], args[1]);
err_code |= ERR_FATAL;
goto out;
}
if (!LIST_ISEMPTY(&bind_conf->listeners)) {
ha_alert("parsing [%s:%d] : One listener per \"peers\" section is authorized but another is already configured at [%s:%d].\n", file, linenum, bind_conf->file, bind_conf->line);
err_code |= ERR_FATAL;
}
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;
}
/*
* Newly allocated listener is at the end of the list
*/
l = LIST_ELEM(bind_conf->listeners.p, 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") == 0) {
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]);
free(t);
free(id);
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) {
free(t);
free(id);
goto out;
}
stktable_store_name(t);
t->next = stktables_list;
stktables_list = t;
}
else if (strcmp(args[0], "disabled") == 0) { /* disables this peers section */
curpeers->disabled = 1;
}
else if (strcmp(args[0], "enabled") == 0) { /* enables this peers section (used to revert a disabled default) */
curpeers->disabled = 0;
}
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, NULL, &proto,
&errmsg, NULL, NULL,
PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_STREAM | PA_O_XPRT | PA_O_CONNECT);
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;
}
if (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;
}
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)
{
ha_free(&p->email_alert.mailers.name);
ha_free(&p->email_alert.from);
ha_free(&p->email_alert.to);
ha_free(&p->email_alert.myhostname);
}
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") == 0) {
return 0;
}
else if (strcmp(item, "namespace") == 0) {
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") == 0) { /* 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]) == 0) {
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") == 0) { /* 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]) == 0) {
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") == 0) {
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") == 0) { /* 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]) == 0) {
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") == 0) {
#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") == 0) {
newuser->pass = strdup(args[cur_arg + 1]);
newuser->flags |= AU_O_INSECURE;
cur_arg += 2;
continue;
} else if (strcmp(args[cur_arg], "groups") == 0) {
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;
}
/*
* Detect a global section after a non-global one and output a diagnostic
* warning.
*/
static void check_section_position(char *section_name,
const char *file, int linenum,
int *non_global_parsed)
{
if (!strcmp(section_name, "global")) {
if (*non_global_parsed == 1)
_ha_diag_warning("parsing [%s:%d] : global section detected after a non-global one, the prevalence of their statements is unspecified\n", file, linenum);
}
else if (*non_global_parsed == 0) {
*non_global_parsed = 1;
}
}
/* apply the current default_path setting for config file <file>, and
* optionally replace the current path to <origin> if not NULL while the
* default-path mode is set to "origin". Errors are returned into an
* allocated string passed to <err> if it's not NULL. Returns 0 on failure
* or non-zero on success.
*/
static int cfg_apply_default_path(const char *file, const char *origin, char **err)
{
const char *beg, *end;
/* make path start at <beg> and end before <end>, and switch it to ""
* if no slash was passed.
*/
beg = file;
end = strrchr(beg, '/');
if (!end)
end = beg;
if (!*initial_cwd) {
if (getcwd(initial_cwd, sizeof(initial_cwd)) == NULL) {
if (err)
memprintf(err, "Impossible to retrieve startup directory name: %s", strerror(errno));
return 0;
}
}
else if (chdir(initial_cwd) == -1) {
if (err)
memprintf(err, "Impossible to get back to initial directory '%s': %s", initial_cwd, strerror(errno));
return 0;
}
/* OK now we're (back) to initial_cwd */
switch (default_path_mode) {
case DEFAULT_PATH_CURRENT:
/* current_cwd never set, nothing to do */
return 1;
case DEFAULT_PATH_ORIGIN:
/* current_cwd set in the config */
if (origin &&
snprintf(current_cwd, sizeof(current_cwd), "%s", origin) > sizeof(current_cwd)) {
if (err)
memprintf(err, "Absolute path too long: '%s'", origin);
return 0;
}
break;
case DEFAULT_PATH_CONFIG:
if (end - beg >= sizeof(current_cwd)) {
if (err)
memprintf(err, "Config file path too long, cannot use for relative paths: '%s'", file);
return 0;
}
memcpy(current_cwd, beg, end - beg);
current_cwd[end - beg] = 0;
break;
case DEFAULT_PATH_PARENT:
if (end - beg + 3 >= sizeof(current_cwd)) {
if (err)
memprintf(err, "Config file path too long, cannot use for relative paths: '%s'", file);
return 0;
}
memcpy(current_cwd, beg, end - beg);
if (end > beg)
memcpy(current_cwd + (end - beg), "/..\0", 4);
else
memcpy(current_cwd + (end - beg), "..\0", 3);
break;
}
if (*current_cwd && chdir(current_cwd) == -1) {
if (err)
memprintf(err, "Impossible to get back to directory '%s': %s", initial_cwd, strerror(errno));
return 0;
}
return 1;
}
/* parses a global "default-path" directive. */
static int cfg_parse_global_def_path(char **args, int section_type, struct proxy *curpx,
const struct proxy *defpx, const char *file, int line,
char **err)
{
int ret = -1;
/* "current", "config", "parent", "origin <path>" */
if (strcmp(args[1], "current") == 0)
default_path_mode = DEFAULT_PATH_CURRENT;
else if (strcmp(args[1], "config") == 0)
default_path_mode = DEFAULT_PATH_CONFIG;
else if (strcmp(args[1], "parent") == 0)
default_path_mode = DEFAULT_PATH_PARENT;
else if (strcmp(args[1], "origin") == 0)
default_path_mode = DEFAULT_PATH_ORIGIN;
else {
memprintf(err, "%s default-path mode '%s' for '%s', supported modes include 'current', 'config', 'parent', and 'origin'.", *args[1] ? "unsupported" : "missing", args[1], args[0]);
goto end;
}
if (default_path_mode == DEFAULT_PATH_ORIGIN) {
if (!*args[2]) {
memprintf(err, "'%s %s' expects a directory as an argument.", args[0], args[1]);
goto end;
}
if (!cfg_apply_default_path(file, args[2], err)) {
memprintf(err, "couldn't set '%s' to origin '%s': %s.", args[0], args[2], *err);
goto end;
}
}
else if (!cfg_apply_default_path(file, NULL, err)) {
memprintf(err, "couldn't set '%s' to '%s': %s.", args[0], args[1], *err);
goto end;
}
/* note that once applied, the path is immediately updated */
ret = 0;
end:
return ret;
}
/* looks up a cond predicate matching the keyword in <str>, possibly followed
* by a parenthesis. Returns a pointer to it or NULL if not found.
*/
static const struct cond_pred_kw *cfg_lookup_cond_pred(const char *str)
{
const struct cond_pred_kw *ret;
int len = strcspn(str, " (");
for (ret = &cond_predicates[0]; ret->word; ret++) {
if (len != strlen(ret->word))
continue;
if (strncmp(str, ret->word, len) != 0)
continue;
return ret;
}
return NULL;
}
/* evaluate a condition on a .if/.elif line. The condition is already tokenized
* in <err>. Returns -1 on error (in which case err is filled with a message,
* and only in this case), 0 if the condition is false, 1 if it's true. If
* <errptr> is not NULL, it's set to the first invalid character on error.
*/
static int cfg_eval_condition(char **args, char **err, const char **errptr)
{
const struct cond_pred_kw *cond_pred = NULL;
const char *end_ptr;
struct arg *argp = NULL;
int err_arg;
int nbargs;
int ret = -1;
char *end;
long val;
if (!*args[0]) /* note: empty = false */
return 0;
val = strtol(args[0], &end, 0);
if (end && *end == '\0')
return val != 0;
/* below we'll likely all make_arg_list() so we must return only via
* the <done> label which frees the arg list.
*/
cond_pred = cfg_lookup_cond_pred(args[0]);
if (cond_pred) {
nbargs = make_arg_list(args[0] + strlen(cond_pred->word), -1,
cond_pred->arg_mask, &argp, err,
&end_ptr, &err_arg, NULL);
if (nbargs < 0) {
memprintf(err, "%s in argument %d of predicate '%s' used in conditional expression", *err, err_arg, cond_pred->word);
if (errptr)
*errptr = end_ptr;
goto done;
}
/* here we know we have a valid predicate with <nbargs> valid
* arguments, placed in <argp> (which we'll need to free).
*/
switch (cond_pred->prd) {
case CFG_PRED_DEFINED: // checks if arg exists as an environment variable
ret = getenv(argp[0].data.str.area) != NULL;
goto done;
case CFG_PRED_FEATURE: { // checks if the arg matches an enabled feature
const char *p;
for (p = build_features; (p = strstr(p, argp[0].data.str.area)); p++) {
if ((p[argp[0].data.str.data] == ' ' || p[argp[0].data.str.data] == 0) &&
p > build_features) {
if (*(p-1) == '+') { // "+OPENSSL"
ret = 1;
goto done;
}
else if (*(p-1) == '-') { // "-OPENSSL"
ret = 0;
goto done;
}
/* it was a sub-word, let's restart from next place */
}
}
/* not found */
ret = 0;
goto done;
}
case CFG_PRED_STREQ: // checks if the two arg are equal
ret = strcmp(argp[0].data.str.area, argp[1].data.str.area) == 0;
goto done;
case CFG_PRED_STRNEQ: // checks if the two arg are different
ret = strcmp(argp[0].data.str.area, argp[1].data.str.area) != 0;
goto done;
case CFG_PRED_VERSION_ATLEAST: // checks if the current version is at least this one
ret = compare_current_version(argp[0].data.str.area) <= 0;
goto done;
case CFG_PRED_VERSION_BEFORE: // checks if the current version is older than this one
ret = compare_current_version(argp[0].data.str.area) > 0;
goto done;
default:
memprintf(err, "internal error: unhandled conditional expression predicate '%s'", cond_pred->word);
if (errptr)
*errptr = args[0];
goto done;
}
}
memprintf(err, "unparsable conditional expression '%s'", args[0]);
if (errptr)
*errptr = args[0];
done:
for (nbargs = 0; argp && argp[nbargs].type != ARGT_STOP; nbargs++) {
if (argp[nbargs].type == ARGT_STR)
free(argp[nbargs].data.str.area);
}
free(argp);
return ret;
}
/*
* This function reads and parses the configuration file given in the argument.
* Returns the error code, 0 if OK, -1 if the config file couldn't be opened,
* 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 = NULL;
int linesize = LINESIZE;
FILE *f = NULL;
int linenum = 0;
int err_code = 0;
struct cfg_section *cs = NULL, *pcs = NULL;
struct cfg_section *ics;
int readbytes = 0;
char *outline = NULL;
size_t outlen = 0;
size_t outlinesize = 0;
int fatal = 0;
int missing_lf = -1;
int nested_cond_lvl = 0;
enum nested_cond_state nested_conds[MAXNESTEDCONDS];
int non_global_section_parsed = 0;
char *errmsg = NULL;
global.cfg_curr_line = 0;
global.cfg_curr_file = file;
if ((thisline = malloc(sizeof(*thisline) * linesize)) == NULL) {
ha_alert("Out of memory trying to allocate a buffer for a configuration line.\n");
err_code = -1;
goto err;
}
if ((f = fopen(file,"r")) == NULL) {
err_code = -1;
goto err;
}
/* change to the new dir if required */
if (!cfg_apply_default_path(file, NULL, &errmsg)) {
ha_alert("parsing [%s:%d]: failed to apply default-path: %s.\n", file, linenum, errmsg);
free(errmsg);
err_code = -1;
goto err;
}
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;
if (missing_lf != -1) {
ha_alert("parsing [%s:%d]: Stray NUL character at position %d.\n",
file, linenum, (missing_lf + 1));
err_code |= ERR_ALERT | ERR_FATAL;
missing_lf = -1;
break;
}
linenum++;
global.cfg_curr_line = linenum;
if (fatal >= 50) {
ha_alert("parsing [%s:%d]: too many fatal errors (%d), stopping now.\n", file, linenum, fatal);
break;
}
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;
fatal++;
linenum--;
continue;
}
readbytes = linesize - 1;
linesize = newlinesize;
thisline = newline;
linenum--;
continue;
}
readbytes = 0;
if (end > line && *(end-1) == '\n') {
/* kill trailing LF */
*(end - 1) = 0;
}
else {
/* mark this line as truncated */
missing_lf = end - line;
}
/* 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;
}
while (1) {
uint32_t err;
char *errptr;
arg = MAX_LINE_ARGS + 1;
outlen = outlinesize;
err = parse_line(line, outline, &outlen, args, &arg,
PARSE_OPT_ENV | PARSE_OPT_DQUOTE | PARSE_OPT_SQUOTE |
PARSE_OPT_BKSLASH | PARSE_OPT_SHARP | PARSE_OPT_WORD_EXPAND,
&errptr);
if (err & PARSE_ERR_QUOTE) {
size_t newpos = sanitize_for_printing(line, errptr - line, 80);
ha_alert("parsing [%s:%d]: unmatched quote at position %d:\n"
" %s\n %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
err_code |= ERR_ALERT | ERR_FATAL;
fatal++;
goto next_line;
}
if (err & PARSE_ERR_BRACE) {
size_t newpos = sanitize_for_printing(line, errptr - line, 80);
ha_alert("parsing [%s:%d]: unmatched brace in environment variable name at position %d:\n"
" %s\n %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
err_code |= ERR_ALERT | ERR_FATAL;
fatal++;
goto next_line;
}
if (err & PARSE_ERR_VARNAME) {
size_t newpos = sanitize_for_printing(line, errptr - line, 80);
ha_alert("parsing [%s:%d]: forbidden first char in environment variable name at position %d:\n"
" %s\n %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
err_code |= ERR_ALERT | ERR_FATAL;
fatal++;
goto next_line;
}
if (err & PARSE_ERR_HEX) {
size_t newpos = sanitize_for_printing(line, errptr - line, 80);
ha_alert("parsing [%s:%d]: truncated or invalid hexadecimal sequence at position %d:\n"
" %s\n %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
err_code |= ERR_ALERT | ERR_FATAL;
fatal++;
goto next_line;
}
if (err & PARSE_ERR_WRONG_EXPAND) {
size_t newpos = sanitize_for_printing(line, errptr - line, 80);
ha_alert("parsing [%s:%d]: truncated or invalid word expansion sequence at position %d:\n"
" %s\n %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
err_code |= ERR_ALERT | ERR_FATAL;
fatal++;
goto next_line;
}
if (err & (PARSE_ERR_TOOLARGE|PARSE_ERR_OVERLAP)) {
outlinesize = (outlen + 1023) & -1024;
outline = my_realloc2(outline, outlinesize);
if (outline == NULL) {
ha_alert("parsing [%s:%d]: line too long, cannot allocate memory.\n",
file, linenum);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
fatal++;
outlinesize = 0;
goto err;
}
/* try again */
continue;
}
if (err & PARSE_ERR_TOOMANY) {
/* only check this *after* being sure the output is allocated */
ha_alert("parsing [%s:%d]: too many words, truncating after word %d, position %ld: <%s>.\n",
file, linenum, MAX_LINE_ARGS, (long)(args[MAX_LINE_ARGS-1] - outline + 1), args[MAX_LINE_ARGS-1]);
err_code |= ERR_ALERT | ERR_FATAL;
fatal++;
goto next_line;
}
/* everything's OK */
break;
}
/* empty line */
if (!**args)
continue;
/* check for config macros */
if (*args[0] == '.') {
if (strcmp(args[0], ".if") == 0) {
const char *errptr = NULL;
char *errmsg = NULL;
int cond;
if (*args[2]) {
ha_warning("parsing [%s:%d]: Unexpected argument '%s' for '%s'.\n",
file, linenum, args[2], args[0]);
err_code |= ERR_WARN;
}
nested_cond_lvl++;
if (nested_cond_lvl >= MAXNESTEDCONDS) {
ha_alert("parsing [%s:%d]: too many nested '.if', max is %d.\n", file, linenum, MAXNESTEDCONDS);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
if (nested_cond_lvl > 1 &&
(nested_conds[nested_cond_lvl - 1] == NESTED_COND_IF_DROP ||
nested_conds[nested_cond_lvl - 1] == NESTED_COND_IF_SKIP ||
nested_conds[nested_cond_lvl - 1] == NESTED_COND_ELIF_DROP ||
nested_conds[nested_cond_lvl - 1] == NESTED_COND_ELIF_SKIP ||
nested_conds[nested_cond_lvl - 1] == NESTED_COND_ELSE_DROP)) {
nested_conds[nested_cond_lvl] = NESTED_COND_IF_SKIP;
goto next_line;
}
cond = cfg_eval_condition(args + 1, &errmsg, &errptr);
if (cond < 0) {
size_t newpos = sanitize_for_printing(args[1], errptr - args[1], 76);
ha_alert("parsing [%s:%d]: %s in '.if' at position %d:\n .if %s\n %*s\n",
file, linenum, errmsg,
(int)(errptr-args[1]+1), args[1], (int)(newpos+5), "^");
free(errmsg);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
if (cond)
nested_conds[nested_cond_lvl] = NESTED_COND_IF_TAKE;
else
nested_conds[nested_cond_lvl] = NESTED_COND_IF_DROP;
goto next_line;
}
else if (strcmp(args[0], ".elif") == 0) {
const char *errptr = NULL;
char *errmsg = NULL;
int cond;
if (*args[2]) {
ha_warning("parsing [%s:%d]: Unexpected argument '%s' for '%s'.\n",
file, linenum, args[2], args[0]);
err_code |= ERR_WARN;
}
if (!nested_cond_lvl) {
ha_alert("parsing [%s:%d]: lone '.elif' with no matching '.if'.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
if (nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_TAKE ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_DROP) {
ha_alert("parsing [%s:%d]: '.elif' after '.else' is not permitted.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
if (nested_conds[nested_cond_lvl] == NESTED_COND_IF_TAKE ||
nested_conds[nested_cond_lvl] == NESTED_COND_IF_SKIP ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_TAKE ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_SKIP) {
nested_conds[nested_cond_lvl] = NESTED_COND_ELIF_SKIP;
goto next_line;
}
cond = cfg_eval_condition(args + 1, &errmsg, &errptr);
if (cond < 0) {
size_t newpos = sanitize_for_printing(args[1], errptr - args[1], 74);
ha_alert("parsing [%s:%d]: %s in '.elif' at position %d:\n .elif %s\n %*s\n",
file, linenum, errmsg,
(int)(errptr-args[1]+1), args[1], (int)(newpos+7), "^");
free(errmsg);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
if (cond)
nested_conds[nested_cond_lvl] = NESTED_COND_ELIF_TAKE;
else
nested_conds[nested_cond_lvl] = NESTED_COND_ELIF_DROP;
goto next_line;
}
else if (strcmp(args[0], ".else") == 0) {
if (*args[1]) {
ha_warning("parsing [%s:%d]: Unxpected argument '%s' for '%s'.\n",
file, linenum, args[1], args[0]);
err_code |= ERR_WARN;
}
if (!nested_cond_lvl) {
ha_alert("parsing [%s:%d]: lone '.else' with no matching '.if'.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
if (nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_TAKE ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_DROP) {
ha_alert("parsing [%s:%d]: '.else' after '.else' is not permitted.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
if (nested_conds[nested_cond_lvl] == NESTED_COND_IF_TAKE ||
nested_conds[nested_cond_lvl] == NESTED_COND_IF_SKIP ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_TAKE ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_SKIP) {
nested_conds[nested_cond_lvl] = NESTED_COND_ELSE_DROP;
} else {
/* otherwise we take the "else" */
nested_conds[nested_cond_lvl] = NESTED_COND_ELSE_TAKE;
}
goto next_line;
}
else if (strcmp(args[0], ".endif") == 0) {
if (*args[1]) {
ha_warning("parsing [%s:%d]: Unxpected argument '%s' for '%s'.\n",
file, linenum, args[1], args[0]);
err_code |= ERR_WARN;
}
if (!nested_cond_lvl) {
ha_alert("parsing [%s:%d]: lone '.endif' with no matching '.if'.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
break;
}
nested_cond_lvl--;
goto next_line;
}
}
if (nested_cond_lvl &&
(nested_conds[nested_cond_lvl] == NESTED_COND_IF_DROP ||
nested_conds[nested_cond_lvl] == NESTED_COND_IF_SKIP ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_DROP ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_SKIP ||
nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_DROP)) {
/* The current block is masked out by the conditions */
goto next_line;
}
/* .warning/.error/.notice/.diag */
if (*args[0] == '.') {
if (strcmp(args[0], ".alert") == 0) {
if (*args[2]) {
ha_warning("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
file, linenum, args[2], args[0]);
err_code |= ERR_WARN;
}
ha_alert("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
goto err;
}
else if (strcmp(args[0], ".warning") == 0) {
if (*args[2]) {
ha_warning("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
file, linenum, args[2], args[0]);
err_code |= ERR_WARN;
}
ha_warning("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
err_code |= ERR_WARN;
goto next_line;
}
else if (strcmp(args[0], ".notice") == 0) {
if (*args[2]) {
ha_warning("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
file, linenum, args[2], args[0]);
err_code |= ERR_WARN;
}
ha_notice("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
goto next_line;
}
else if (strcmp(args[0], ".diag") == 0) {
if (*args[2]) {
ha_warning("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
file, linenum, args[2], args[0]);
err_code |= ERR_WARN;
}
ha_diag_warning("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
goto next_line;
}
else {
ha_alert("parsing [%s:%d]: unknown directive '%s'.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
fatal++;
break;
}
}
/* check for keyword modifiers "no" and "default" */
if (strcmp(args[0], "no") == 0) {
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") == 0) {
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 &&
strcmp(args[0], "numa-cpu-mapping") != 0) {
ha_alert("parsing [%s:%d]: negation/default currently "
"supported only for options, log, busy-polling, "
"set-dumpable, strict-limits, insecure-fork-wanted "
"and numa-cpu-mapping.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
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;
free(global.cfg_curr_section);
global.cfg_curr_section = strdup(*args[1] ? args[1] : args[0]);
if (global.mode & MODE_DIAG) {
check_section_position(args[0], file, linenum,
&non_global_section_parsed);
}
break;
}
}
if (pcs && pcs->post_section_parser) {
int status;
status = pcs->post_section_parser();
err_code |= status;
if (status & ERR_FATAL)
fatal++;
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;
fatal++;
} else {
int status;
status = cs->section_parser(file, linenum, args, kwm);
err_code |= status;
if (status & ERR_FATAL)
fatal++;
if (err_code & ERR_ABORT)
goto err;
}
}
if (missing_lf != -1) {
ha_alert("parsing [%s:%d]: Missing LF on last line, file might have been truncated at position %d.\n",
file, linenum, (missing_lf + 1));
err_code |= ERR_ALERT | ERR_FATAL;
}
ha_free(&global.cfg_curr_section);
if (cs && cs->post_section_parser)
err_code |= cs->post_section_parser();
if (nested_cond_lvl) {
ha_alert("parsing [%s:%d]: non-terminated '.if' block.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
}
if (*initial_cwd && chdir(initial_cwd) == -1) {
ha_alert("Impossible to get back to initial directory '%s' : %s\n", initial_cwd, strerror(errno));
err_code |= ERR_ALERT | ERR_FATAL;
}
err:
ha_free(&cfg_scope);
cursection = NULL;
free(thisline);
free(outline);
global.cfg_curr_line = 0;
global.cfg_curr_file = NULL;
if (f)
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->disabled)
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);
}
}
#if defined(USE_THREAD) && defined(__linux__) && defined USE_CPU_AFFINITY
/* filter directory name of the pattern node<X> */
static int numa_filter(const struct dirent *dir)
{
char *endptr;
/* dir name must start with "node" prefix */
if (strncmp(dir->d_name, "node", 4))
return 0;
/* dir name must be at least 5 characters long */
if (!dir->d_name[4])
return 0;
/* dir name must end with a numeric id */
if (strtol(&dir->d_name[4], &endptr, 10) < 0 || *endptr)
return 0;
/* all tests succeeded */
return 1;
}
/* Parse a linux cpu map string representing to a numeric cpu mask map
* The cpu map string is a list of 4-byte hex strings separated by commas, with
* most-significant byte first, one bit per cpu number.
*/
static void parse_cpumap(char *cpumap_str, struct hap_cpuset *cpu_set)
{
unsigned long cpumap;
char *start, *endptr, *comma;
int i, j;
ha_cpuset_zero(cpu_set);
i = 0;
do {
/* reverse-search for a comma, parse the string after the comma
* or at the beginning if no comma found
*/
comma = strrchr(cpumap_str, ',');
start = comma ? comma + 1 : cpumap_str;
cpumap = strtoul(start, &endptr, 16);
for (j = 0; cpumap; cpumap >>= 1, ++j) {
if (cpumap & 0x1)
ha_cpuset_set(cpu_set, j + i * 32);
}
if (comma)
*comma = '\0';
++i;
} while (comma);
}
/* Read the first line of a file from <path> into the trash buffer.
* Returns 0 on success, otherwise non-zero.
*/
static int read_file_to_trash(const char *path)
{
FILE *file;
int ret = 1;
file = fopen(path, "r");
if (file) {
if (fgets(trash.area, trash.size, file))
ret = 0;
fclose(file);
}
return ret;
}
/* Inspect the cpu topology of the machine on startup. If a multi-socket
* machine is detected, try to bind on the first node with active cpu. This is
* done to prevent an impact on the overall performance when the topology of
* the machine is unknown. This function is not called if one of the conditions
* is met :
* - a non-null nbthread directive is active
* - a restrictive cpu-map directive is active
* - a restrictive affinity is already applied, for example via taskset
*
* Returns the count of cpus selected. If no automatic binding was required or
* an error occurred and the topology is unknown, 0 is returned.
*/
static int numa_detect_topology()
{
struct dirent **node_dirlist;
int node_dirlist_size;
struct hap_cpuset active_cpus, node_cpu_set;
const char *parse_cpu_set_args[2];
char cpumap_path[PATH_MAX];
char *err = NULL;
/* node_cpu_set count is used as return value */
ha_cpuset_zero(&node_cpu_set);
/* 1. count the sysfs node<X> directories */
node_dirlist = NULL;
node_dirlist_size = scandir(NUMA_DETECT_SYSTEM_SYSFS_PATH"/node", &node_dirlist, numa_filter, alphasort);
if (node_dirlist_size <= 1)
goto free_scandir_entries;
/* 2. read and parse the list of currently online cpu */
if (read_file_to_trash(NUMA_DETECT_SYSTEM_SYSFS_PATH"/cpu/online")) {
ha_notice("Cannot read online CPUs list, will not try to refine binding\n");
goto free_scandir_entries;
}
parse_cpu_set_args[0] = trash.area;
parse_cpu_set_args[1] = "\0";
if (parse_cpu_set(parse_cpu_set_args, &active_cpus, 1, &err)) {
ha_notice("Cannot read online CPUs list: '%s'. Will not try to refine binding\n", err);
free(err);
goto free_scandir_entries;
}
/* 3. loop through nodes dirs and find the first one with active cpus */
while (node_dirlist_size--) {
const char *node = node_dirlist[node_dirlist_size]->d_name;
ha_cpuset_zero(&node_cpu_set);
snprintf(cpumap_path, PATH_MAX, "%s/node/%s/cpumap",
NUMA_DETECT_SYSTEM_SYSFS_PATH, node);
if (read_file_to_trash(cpumap_path)) {
ha_notice("Cannot read CPUs list of '%s', will not select them to refine binding\n", node);
free(node_dirlist[node_dirlist_size]);
continue;
}
parse_cpumap(trash.area, &node_cpu_set);
ha_cpuset_and(&node_cpu_set, &active_cpus);
/* 5. set affinity on the first found node with active cpus */
if (!ha_cpuset_count(&node_cpu_set)) {
free(node_dirlist[node_dirlist_size]);
continue;
}
ha_diag_warning("Multi-socket cpu detected, automatically binding on active CPUs of '%s' (%u active cpu(s))\n", node, ha_cpuset_count(&node_cpu_set));
if (sched_setaffinity(getpid(), sizeof(node_cpu_set.cpuset), &node_cpu_set.cpuset) == -1) {
ha_warning("Cannot set the cpu affinity for this multi-cpu machine\n");
/* clear the cpuset used as return value */
ha_cpuset_zero(&node_cpu_set);
}
free(node_dirlist[node_dirlist_size]);
break;
}
free_scandir_entries:
while (node_dirlist_size-- > 0)
free(node_dirlist[node_dirlist_size]);
free(node_dirlist);
return ha_cpuset_count(&node_cpu_set);
}
#endif /* __linux__ && USE_CPU_AFFINITY */
/*
* 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 proxy *init_proxies_list = 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 resolvers *curr_resolvers = NULL;
int i;
bind_conf = NULL;
/*
* Now, check for the integrity of all that we have collected.
*/
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) {
int numa_cores = 0;
#if defined(__linux__) && defined USE_CPU_AFFINITY
if (global.numa_cpu_mapping && !thread_cpu_mask_forced())
numa_cores = numa_detect_topology();
#endif
global.nbthread = numa_cores ? numa_cores :
thread_cpus_enabled_at_boot;
if (global.nbthread > MAX_THREADS) {
ha_diag_warning("nbthread not set, found %d CPUs, limiting to %d threads. Please set nbthreads in the global section to silence this warning.\n",
global.nbthread, MAX_THREADS);
global.nbthread = MAX_THREADS;
}
}
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;
}
/* starting to initialize the main proxies list */
init_proxies_list = proxies_list;
init_proxies_list_stage1:
for (curproxy = init_proxies_list; curproxy; curproxy = curproxy->next) {
struct switching_rule *rule;
struct server_rule *srule;
struct sticking_rule *mrule;
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->mode == PR_MODE_HTTP && global.tune.bufsize >= (256 << 20) && ONLY_ONCE()) {
ha_alert("global.tune.bufsize must be below 256 MB when HTTP is in use (current value = %d).\n",
global.tune.bufsize);
cfgerr++;
}
if (curproxy->disabled) {
/* ensure we don't keep listeners uselessly bound. We
* can't disable their listeners yet (fdtab not
* allocated yet) but let's skip them.
*/
if (curproxy->table) {
ha_free(&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->settings.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->settings.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->settings.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->settings.bind_proc);
bind_conf->settings.bind_proc = proc_mask(bind_conf->settings.bind_proc) & mask;
if (!bind_conf->settings.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->settings.bind_proc = mask & ~(mask - 1);
}
else if (!bind_conf->settings.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->settings.bind_proc = 0;
}
}
}
switch (curproxy->mode) {
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;
case PR_MODE_SYSLOG:
/* this mode is initialized as the classic tcp proxy */
cfgerr += proxy_cfg_ensure_no_http(curproxy);
break;
case PR_MODE_PEERS:
case PR_MODES:
/* should not happen, bug gcc warn missing switch statement */
ha_alert("config: %s '%s' cannot initialize this proxy mode (peers) in this way. NOTE: PLEASE REPORT THIS TO DEVELOPERS AS YOU'RE NOT SUPPOSED TO BE ABLE TO CREATE A CONFIGURATION TRIGGERING THIS!\n",
proxy_type_str(curproxy), curproxy->id);
cfgerr++;
break;
}
if (curproxy != global.cli_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) {
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->tcpcheck_rules.flags & TCPCHK_RULES_UNUSED_HTTP_RS)) {
ha_warning("config : %s '%s' uses http-check rules without 'option httpchk', so the rules are ignored.\n",
proxy_type_str(curproxy), curproxy->id);
err_code |= ERR_WARN;
}
if ((curproxy->options2 & PR_O2_CHK_ANY) == PR_O2_TCPCHK_CHK &&
(curproxy->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) != TCPCHK_RULES_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) {
ha_free(&curproxy->check_command);
}
}
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;
ha_free(&curproxy->check_path);
}
}
/* 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;
}
/* Only one element in the list, a simple string: free the expression and
* fall back to static rule
*/
LIST_DELETE(&node->list);
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 {
ha_free(&rule->be.name);
rule->be.backend = target;
}
err_code |= warnif_tcp_http_cond(curproxy, rule->cond);
}
/* find the target server for 'use_server' rules */
list_for_each_entry(srule, &curproxy->server_rules, list) {
struct server *target;
struct logformat_node *node;
char *server_name;
/* We try to parse the string as a log format expression. If the result of the parsing
* is only one entry containing a single string, then it's a standard string corresponding
* to a static rule, thus the parsing is cancelled and we fall back to setting srv.ptr.
*/
server_name = srule->srv.name;
LIST_INIT(&srule->expr);
curproxy->conf.args.ctx = ARGC_USRV;
err = NULL;
if (!parse_logformat_string(server_name, curproxy, &srule->expr, 0, SMP_VAL_FE_HRQ_HDR, &err)) {
ha_alert("Parsing [%s:%d]; use-server rule failed to parse log-format '%s' : %s.\n",
srule->file, srule->line, server_name, err);
free(err);
cfgerr++;
continue;
}
node = LIST_NEXT(&srule->expr, struct logformat_node *, list);
if (!LIST_ISEMPTY(&srule->expr)) {
if (node->type != LOG_FMT_TEXT || node->list.n != &srule->expr) {
srule->dynamic = 1;
free(server_name);
continue;
}
/* Only one element in the list, a simple string: free the expression and
* fall back to static rule
*/
LIST_DELETE(&node->list);
free(node->arg);
free(node);
}
srule->dynamic = 0;
srule->srv.name = server_name;
target = findserver(curproxy, srule->srv.name);
err_code |= warnif_tcp_http_cond(curproxy, srule->cond);
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;
}
ha_free(&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 {
ha_free(&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_KEY, NULL);
if (!in_proxies_list(target->proxies_list, curproxy)) {
curproxy->next_stkt_ref = target->proxies_list;
target->proxies_list = curproxy;
}
}
err_code |= warnif_tcp_http_cond(curproxy, mrule->cond);
}
/* 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 {
ha_free(&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_KEY, 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 4/5/6/7 rules */
cfgerr += check_action_rules(&curproxy->tcp_req.l4_rules, curproxy, &err_code);
cfgerr += check_action_rules(&curproxy->tcp_req.l5_rules, curproxy, &err_code);
cfgerr += check_action_rules(&curproxy->tcp_req.inspect_rules, curproxy, &err_code);
cfgerr += check_action_rules(&curproxy->tcp_rep.inspect_rules, curproxy, &err_code);
cfgerr += check_action_rules(&curproxy->http_req_rules, curproxy, &err_code);
cfgerr += check_action_rules(&curproxy->http_res_rules, curproxy, &err_code);
cfgerr += check_action_rules(&curproxy->http_after_res_rules, curproxy, &err_code);
/* Warn is a switch-mode http is used on a TCP listener with servers but no backend */
if (!curproxy->defbe.name && LIST_ISEMPTY(&curproxy->switching_rules) && curproxy->srv) {
if ((curproxy->options & PR_O_HTTP_UPG) && curproxy->mode == PR_MODE_TCP)
ha_warning("Proxy '%s' : 'switch-mode http' configured for a %s %s with no backend. "
"Incoming connections upgraded to HTTP cannot be routed to TCP servers\n",
curproxy->id, proxy_mode_str(curproxy->mode), proxy_type_str(curproxy));
}
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) {
ha_free(&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);
ha_free(&curproxy->table->peers.name);
curproxy->table->peers.p = NULL;
cfgerr++;
}
else if (curpeers->disabled) {
/* 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) == 0)
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->flags & STAT_CONVDONE) &&
!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->flags & STAT_CONVDONE) ||
LIST_ISEMPTY(&curproxy->uri_auth->http_req_rules))) {
const char *uri_auth_compat_req[10];
struct act_rule *rule;
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_APPEND(&curproxy->uri_auth->http_req_rules, &rule->list);
if (curproxy->uri_auth->auth_realm) {
ha_free(&curproxy->uri_auth->auth_realm);
}
curproxy->uri_auth->flags |= STAT_CONVDONE;
}
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;
ha_free(&curproxy->conf.lfs_file);
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;
ha_free(&curproxy->conf.lfsd_file);
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|LOG_OPT_MERGE_SPACES,
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|LOG_OPT_MERGE_SPACES,
SMP_VAL_FE_LOG_END, &err)) {
ha_alert("Parsing [%s:%d]: failed to parse log-format-sd : %s.\n",
curproxy->conf.lfsd_file, curproxy->conf.lfsd_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.lfsd_file, curproxy->conf.lfsd_line, err);
free(err);
cfgerr++;
}
curproxy->conf.args.file = NULL;
curproxy->conf.args.line = 0;
}
if (curproxy->conf.uniqueid_format_string) {
int where = 0;
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 (curproxy->cap & PR_CAP_FE)
where |= SMP_VAL_FE_HRQ_HDR;
if (curproxy->cap & PR_CAP_BE)
where |= SMP_VAL_BE_HRQ_HDR;
if (!parse_logformat_string(curproxy->conf.uniqueid_format_string, curproxy, &curproxy->format_unique_id,
LOG_OPT_HTTP|LOG_OPT_MERGE_SPACES, where, &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.
*/
err = NULL;
i = smp_resolve_args(curproxy, &err);
cfgerr += i;
if (i) {
indent_msg(&err, 8);
ha_alert("%s%s\n", i > 1 ? "multiple argument resolution errors:" : "", err);
ha_free(&err);
} else
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->timeout.tarpit)
curproxy->timeout.tarpit = curproxy->timeout.connect;
if ((curproxy->cap & PR_CAP_BE) && !curproxy->timeout.queue)
curproxy->timeout.queue = curproxy->timeout.connect;
if ((curproxy->tcpcheck_rules.flags & TCPCHK_RULES_UNUSED_TCP_RS)) {
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 default-server have use_ssl, prerare ssl init
* without activating it */
if (newsrv->use_ssl == 1 || newsrv->check.use_ssl == 1 ||
(newsrv->proxy->options & PR_O_TCPCHK_SSL) ||
((newsrv->flags & SRV_F_DEFSRV_USE_SSL) && newsrv->use_ssl != 1)) {
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);
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->do_check && !srv->do_agent && !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;
ha_free(&newsrv->trackit);
}
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;
if (chash_init_server_tree(curproxy) < 0) {
cfgerr++;
}
} 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;
if (chash_init_server_tree(curproxy) < 0) {
cfgerr++;
}
} else {
curproxy->lbprm.algo |= BE_LB_LKUP_MAP;
init_server_map(curproxy);
}
break;
}
HA_RWLOCK_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 && !(curproxy->options & PR_O_HTTP_UPG)) {
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->http_after_res_rules)) {
ha_warning("config : 'http-after-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->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;
}
}
/* 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;
}
}
/*
* We have just initialized the main proxies list
* we must also configure the log-forward proxies list
*/
if (init_proxies_list == proxies_list) {
init_proxies_list = cfg_log_forward;
/* check if list is not null to avoid infinite loop */
if (init_proxies_list)
goto init_proxies_list_stage1;
}
if (init_proxies_list == cfg_log_forward) {
init_proxies_list = sink_proxies_list;
/* check if list is not null to avoid infinite loop */
if (init_proxies_list)
goto init_proxies_list_stage1;
}
/***********************************************************/
/* At this point, target names have already been resolved. */
/***********************************************************/
/* we must finish to initialize certain things on the servers */
list_for_each_entry(newsrv, &servers_list, global_list) {
/* initialize idle conns lists */
newsrv->per_thr = calloc(global.nbthread, sizeof(*newsrv->per_thr));
if (!newsrv->per_thr) {
ha_alert("parsing [%s:%d] : failed to allocate per-thread lists for server '%s'.\n",
newsrv->conf.file, newsrv->conf.line, newsrv->id);
cfgerr++;
continue;
}
for (i = 0; i < global.nbthread; i++) {
newsrv->per_thr[i].idle_conns = EB_ROOT;
newsrv->per_thr[i].safe_conns = EB_ROOT;
newsrv->per_thr[i].avail_conns = EB_ROOT;
MT_LIST_INIT(&newsrv->per_thr[i].streams);
}
if (newsrv->max_idle_conns != 0) {
newsrv->curr_idle_thr = calloc(global.nbthread, sizeof(*newsrv->curr_idle_thr));
if (!newsrv->curr_idle_thr) {
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;
}
}
}
idle_conn_task = task_new(MAX_THREADS_MASK);
if (!idle_conn_task) {
ha_alert("parsing : failed to allocate global idle connection task.\n");
cfgerr++;
}
else {
idle_conn_task->process = srv_cleanup_idle_conns;
idle_conn_task->context = NULL;
for (i = 0; i < global.nbthread; i++) {
idle_conns[i].cleanup_task = task_new(1UL << i);
if (!idle_conns[i].cleanup_task) {
ha_alert("parsing : failed to allocate idle connection tasks for thread '%d'.\n", i);
cfgerr++;
break;
}
idle_conns[i].cleanup_task->process = srv_cleanup_toremove_conns;
idle_conns[i].cleanup_task->context = NULL;
HA_SPIN_INIT(&idle_conns[i].idle_conns_lock);
MT_LIST_INIT(&idle_conns[i].toremove_conns);
}
}
/* Check multi-process mode compatibility */
if (global.nbproc > 1 && global.cli_fe) {
list_for_each_entry(bind_conf, &global.cli_fe->conf.bind, by_fe) {
unsigned long mask;
mask = proc_mask(global.cli_fe->bind_proc) && all_proc_mask;
mask &= proc_mask(bind_conf->settings.bind_proc);
/* stop here if more than one process is used */
if (atleast2(mask))
break;
}
if (&bind_conf->by_fe != &global.cli_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->settings.bind_proc);
curproxy->bind_proc |= mask;
}
curproxy->bind_proc = proc_mask(curproxy->bind_proc);
}
if (global.cli_fe) {
list_for_each_entry(bind_conf, &global.cli_fe->conf.bind, by_fe) {
unsigned long mask;
mask = bind_conf->settings.bind_proc ? bind_conf->settings.bind_proc : 0;
global.cli_fe->bind_proc |= mask;
}
global.cli_fe->bind_proc = proc_mask(global.cli_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 */
/* starting to initialize the main proxies list */
init_proxies_list = proxies_list;
init_proxies_list_stage2:
for (curproxy = init_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->settings.bind_proc ? listener->bind_conf->settings.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 : MAX_ACCEPT;
/* 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. Remember 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;
/* 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->settings.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++;
}
}
/*
* We have just initialized the main proxies list
* we must also configure the log-forward proxies list
*/
if (init_proxies_list == proxies_list) {
init_proxies_list = cfg_log_forward;
/* check if list is not null to avoid infinite loop */
if (init_proxies_list)
goto init_proxies_list_stage2;
}
/*
* 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;
/* In the case the peers frontend was not initialized by a
stick-table used in the configuration, set its bind_proc
by default to the first process. */
while (curpeers) {
if (curpeers->peers_fe) {
if (curpeers->peers_fe->bind_proc == 0)
curpeers->peers_fe->bind_proc = 1;
}
curpeers = curpeers->next;
}
curpeers = cfg_peers;
/* 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) {
struct stktable *t;
curpeers = *last;
if (curpeers->disabled) {
/* 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);
if (curpeers->peers_fe)
stop_proxy(curpeers->peers_fe);
curpeers->peers_fe = NULL;
}
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 == 1 && 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;
/* Reset any refereance to this peers section in the list of stick-tables */
for (t = stktables_list; t; t = t->next) {
if (t->peers.p && t->peers.p == *last)
t->peers.p = NULL;
}
free(*last);
*last = curpeers;
}
}
for (t = stktables_list; t; t = t->next) {
if (t->proxy)
continue;
if (!stktable_init(t)) {
ha_alert("Parsing [%s:%d]: failed to initialize '%s' stick-table.\n", t->conf.file, t->conf.line, 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->disabled || !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, &sec_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_APPEND(&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_DELETE(&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_APPEND(&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_APPEND(&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_DELETE(&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_DELETE(&cs->list);
LIST_APPEND(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_DELETE(&cs->list);
LIST_APPEND(&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);
static struct cfg_kw_list cfg_kws = {{ },{
{ CFG_GLOBAL, "default-path", cfg_parse_global_def_path },
{ /* END */ }
}};
INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/