blob: 10a8de5428008a72b25f1e210099e5be44b5d1fc [file] [log] [blame]
/*
* Functions about FCGI applications and filters.
*
* Copyright (C) 2019 HAProxy Technologies, Christopher Faulet <cfaulet@haproxy.com>
*
* 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.
*
*/
#include <haproxy/api.h>
#include <haproxy/chunk.h>
#include <common/cfgparse.h>
#include <haproxy/errors.h>
#include <haproxy/http_htx.h>
#include <haproxy/regex.h>
#include <haproxy/sample.h>
#include <haproxy/tools.h>
#include <haproxy/global.h>
#include <proto/acl.h>
#include <proto/fcgi-app.h>
#include <proto/filters.h>
#include <proto/http_fetch.h>
#include <proto/log.h>
#include <proto/proxy.h>
#include <proto/server.h>
#include <proto/session.h>
/* Global list of all FCGI applications */
static struct fcgi_app *fcgi_apps = NULL;
struct flt_ops fcgi_flt_ops;
const char *fcgi_flt_id = "FCGI filter";
DECLARE_STATIC_POOL(pool_head_fcgi_flt_ctx, "fcgi_flt_ctx", sizeof(struct fcgi_flt_ctx));
DECLARE_STATIC_POOL(pool_head_fcgi_param_rule, "fcgi_param_rule", sizeof(struct fcgi_param_rule));
DECLARE_STATIC_POOL(pool_head_fcgi_hdr_rule, "fcgi_hdr_rule", sizeof(struct fcgi_hdr_rule));
/**************************************************************************/
/***************************** Uitls **************************************/
/**************************************************************************/
/* Makes a fcgi parameter name (prefixed by ':fcgi-') with <name> (in
* lowercase). All non alphanumeric character are replaced by an underscore
* ('_'). The result is copied into <dst>. the corrsponding ist is returned.
*/
static struct ist fcgi_param_name(char *dst, const struct ist name)
{
size_t ofs1, ofs2;
memcpy(dst, ":fcgi-", 6);
ofs1 = 6;
for (ofs2 = 0; ofs2 < name.len; ofs2++) {
if (isalnum((unsigned char)name.ptr[ofs2]))
dst[ofs1++] = ist_lc[(unsigned char)name.ptr[ofs2]];
else
dst[ofs1++] = '_';
}
return ist2(dst, ofs1);
}
/* Returns a pointer to the FCGi applicatrion mathing the name <name>. NULL is
* returned if no match found.
*/
struct fcgi_app *fcgi_app_find_by_name(const char *name)
{
struct fcgi_app *app;
for (app = fcgi_apps; app != NULL; app = app->next) {
if (!strcmp(app->name, name))
return app;
}
return NULL;
}
struct fcgi_flt_conf *find_px_fcgi_conf(struct proxy *px)
{
struct flt_conf *fconf;
list_for_each_entry(fconf, &px->filter_configs, list) {
if (fconf->id == fcgi_flt_id)
return fconf->conf;
}
return NULL;
}
struct fcgi_flt_ctx *find_strm_fcgi_ctx(struct stream *s)
{
struct filter *filter;
if (!s)
return NULL;
list_for_each_entry(filter, &strm_flt(s)->filters, list) {
if (FLT_ID(filter) == fcgi_flt_id)
return FLT_CONF(filter);
}
return NULL;
}
struct fcgi_app *get_px_fcgi_app(struct proxy *px)
{
struct fcgi_flt_conf *fcgi_conf = find_px_fcgi_conf(px);
if (fcgi_conf)
return fcgi_conf->app;
return NULL;
}
struct fcgi_app *get_strm_fcgi_app(struct stream *s)
{
struct fcgi_flt_ctx *fcgi_ctx = find_strm_fcgi_ctx(s);
if (fcgi_ctx)
return fcgi_ctx->app;
return NULL;
}
static void fcgi_release_rule_conf(struct fcgi_rule_conf *rule)
{
if (!rule)
return;
free(rule->name);
free(rule->value);
if (rule->cond) {
prune_acl_cond(rule->cond);
free(rule->cond);
}
free(rule);
}
static void fcgi_release_rule(struct fcgi_rule *rule)
{
if (!rule)
return;
if (!LIST_ISEMPTY(&rule->value)) {
struct logformat_node *lf, *lfb;
list_for_each_entry_safe(lf, lfb, &rule->value, list) {
LIST_DEL(&lf->list);
release_sample_expr(lf->expr);
free(lf->arg);
free(lf);
}
}
/* ->cond and ->name are not owned by the rule */
free(rule);
}
/**************************************************************************/
/*********************** FCGI Sample fetches ******************************/
/**************************************************************************/
static int smp_fetch_fcgi_docroot(const struct arg *args, struct sample *smp,
const char *kw, void *private)
{
struct fcgi_app *app = get_strm_fcgi_app(smp->strm);
if (!app)
return 0;
smp->data.type = SMP_T_STR;
smp->data.u.str.area = app->docroot.ptr;
smp->data.u.str.data = app->docroot.len;
smp->flags = SMP_F_CONST;
return 1;
}
static int smp_fetch_fcgi_index(const struct arg *args, struct sample *smp,
const char *kw, void *private)
{
struct fcgi_app *app = get_strm_fcgi_app(smp->strm);
if (!app || !istlen(app->index))
return 0;
smp->data.type = SMP_T_STR;
smp->data.u.str.area = app->index.ptr;
smp->data.u.str.data = app->index.len;
smp->flags = SMP_F_CONST;
return 1;
}
/**************************************************************************/
/************************** FCGI filter ***********************************/
/**************************************************************************/
static int fcgi_flt_init(struct proxy *px, struct flt_conf *fconf)
{
fconf->flags |= FLT_CFG_FL_HTX;
return 0;
}
static void fcgi_flt_deinit(struct proxy *px, struct flt_conf *fconf)
{
struct fcgi_flt_conf *fcgi_conf = fconf->conf;
struct fcgi_rule *rule, *back;
if (!fcgi_conf)
return;
free(fcgi_conf->name);
list_for_each_entry_safe(rule, back, &fcgi_conf->param_rules, list) {
LIST_DEL(&rule->list);
fcgi_release_rule(rule);
}
list_for_each_entry_safe(rule, back, &fcgi_conf->hdr_rules, list) {
LIST_DEL(&rule->list);
fcgi_release_rule(rule);
}
free(fcgi_conf);
}
static int fcgi_flt_check(struct proxy *px, struct flt_conf *fconf)
{
struct fcgi_flt_conf *fcgi_conf = fconf->conf;
struct fcgi_rule_conf *crule, *back;
struct fcgi_rule *rule = NULL;
struct flt_conf *f;
char *errmsg = NULL;
fcgi_conf->app = fcgi_app_find_by_name(fcgi_conf->name);
if (!fcgi_conf->app) {
ha_alert("config : proxy '%s' : fcgi-app '%s' not found.\n",
px->id, fcgi_conf->name);
goto err;
}
list_for_each_entry(f, &px->filter_configs, list) {
if (f->id == http_comp_flt_id || f->id == cache_store_flt_id)
continue;
else if ((f->id == fconf->id) && f->conf != fcgi_conf) {
ha_alert("config : proxy '%s' : only one fcgi-app supported per backend.\n",
px->id);
goto err;
}
else if (f->id != fconf->id) {
/* Implicit declaration is only allowed with the
* compression and cache. For other filters, an implicit
* declaration is required. */
ha_alert("config: proxy '%s': require an explicit filter declaration "
"to use the fcgi-app '%s'.\n", px->id, fcgi_conf->name);
goto err;
}
}
list_for_each_entry_safe(crule, back, &fcgi_conf->app->conf.rules, list) {
rule = calloc(1, sizeof(*rule));
if (!rule) {
ha_alert("config : proxy '%s' : out of memory.\n", px->id);
goto err;
}
rule->type = crule->type;
rule->name = ist(crule->name);
rule->cond = crule->cond;
LIST_INIT(&rule->value);
if (crule->value) {
if (!parse_logformat_string(crule->value, px, &rule->value, LOG_OPT_HTTP,
SMP_VAL_BE_HRQ_HDR, &errmsg)) {
ha_alert("config : proxy '%s' : %s.\n", px->id, errmsg);
goto err;
}
}
if (rule->type == FCGI_RULE_SET_PARAM || rule->type == FCGI_RULE_UNSET_PARAM)
LIST_ADDQ(&fcgi_conf->param_rules, &rule->list);
else /* FCGI_RULE_PASS_HDR/FCGI_RULE_HIDE_HDR */
LIST_ADDQ(&fcgi_conf->hdr_rules, &rule->list);
rule = NULL;
}
return 0;
err:
free(errmsg);
free(rule);
return 1;
}
static int fcgi_flt_start(struct stream *s, struct filter *filter)
{
struct fcgi_flt_conf *fcgi_conf = FLT_CONF(filter);
struct fcgi_flt_ctx *fcgi_ctx;
fcgi_ctx = pool_alloc_dirty(pool_head_fcgi_flt_ctx);
if (fcgi_ctx == NULL) {
// FIXME: send a warning
return 0;
}
fcgi_ctx->filter = filter;
fcgi_ctx->app = fcgi_conf->app;
filter->ctx = fcgi_ctx;
s->req.analysers |= AN_REQ_HTTP_BODY;
return 1;
}
static void fcgi_flt_stop(struct stream *s, struct filter *filter)
{
struct flt_fcgi_ctx *fcgi_ctx = filter->ctx;
if (!fcgi_ctx)
return;
pool_free(pool_head_fcgi_flt_ctx, fcgi_ctx);
filter->ctx = NULL;
}
static int fcgi_flt_http_headers(struct stream *s, struct filter *filter, struct http_msg *msg)
{
struct session *sess = strm_sess(s);
struct buffer *value;
struct fcgi_flt_conf *fcgi_conf = FLT_CONF(filter);
struct fcgi_rule *rule;
struct fcgi_param_rule *param_rule;
struct fcgi_hdr_rule *hdr_rule;
struct ebpt_node *node, *next;
struct eb_root param_rules = EB_ROOT;
struct eb_root hdr_rules = EB_ROOT;
struct htx *htx;
struct http_hdr_ctx ctx;
int ret;
htx = htxbuf(&msg->chn->buf);
if (msg->chn->flags & CF_ISRESP) {
struct htx_sl *sl;
/* Remove the header "Status:" from the response */
ctx.blk = NULL;
while (http_find_header(htx, ist("status"), &ctx, 1))
http_remove_header(htx, &ctx);
/* Add the header "Date:" if not found */
ctx.blk = NULL;
if (!http_find_header(htx, ist("date"), &ctx, 1)) {
struct tm tm;
get_gmtime(date.tv_sec, &tm);
trash.data = strftime(trash.area, trash.size, "%a, %d %b %Y %T %Z", &tm);
if (trash.data)
http_add_header(htx, ist("date"), ist2(trash.area, trash.data));
}
/* Add the header "Content-Length:" if possible */
sl = http_get_stline(htx);
if (sl &&
(sl->flags & (HTX_SL_F_XFER_LEN|HTX_SL_F_CLEN|HTX_SL_F_CHNK)) == HTX_SL_F_XFER_LEN &&
htx_get_tail_type(htx) == HTX_BLK_EOM) {
struct htx_blk * blk;
char *end;
size_t len = 0;
for (blk = htx_get_first_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) {
enum htx_blk_type type = htx_get_blk_type(blk);
if (type == HTX_BLK_EOM)
break;
if (type == HTX_BLK_DATA)
len += htx_get_blksz(blk);
}
end = ultoa_o(len, trash.area, trash.size);
if (http_add_header(htx, ist("content-length"), ist2(trash.area, end-trash.area)))
sl->flags |= HTX_SL_F_CLEN;
}
return 1;
}
/* Analyze the request's headers */
value = alloc_trash_chunk();
if (!value)
goto end;
list_for_each_entry(rule, &fcgi_conf->param_rules, list) {
if (rule->cond) {
ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
ret = acl_pass(ret);
if (rule->cond->pol == ACL_COND_UNLESS)
ret = !ret;
/* the rule does not match */
if (!ret)
continue;
}
param_rule = NULL;
node = ebis_lookup_len(&param_rules, rule->name.ptr, rule->name.len);
if (node) {
param_rule = container_of(node, struct fcgi_param_rule, node);
ebpt_delete(node);
}
else {
param_rule = pool_alloc_dirty(pool_head_fcgi_param_rule);
if (param_rule == NULL)
goto param_rule_err;
}
param_rule->node.key = rule->name.ptr;
param_rule->name = rule->name;
param_rule->value = &rule->value;
ebis_insert(&param_rules, &param_rule->node);
}
list_for_each_entry(rule, &fcgi_conf->hdr_rules, list) {
if (rule->cond) {
ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
ret = acl_pass(ret);
if (rule->cond->pol == ACL_COND_UNLESS)
ret = !ret;
/* the rule does not match */
if (!ret)
continue;
}
hdr_rule = NULL;
node = ebis_lookup_len(&hdr_rules, rule->name.ptr, rule->name.len);
if (node) {
hdr_rule = container_of(node, struct fcgi_hdr_rule, node);
ebpt_delete(node);
}
else {
hdr_rule = pool_alloc_dirty(pool_head_fcgi_hdr_rule);
if (hdr_rule == NULL)
goto hdr_rule_err;
}
hdr_rule->node.key = rule->name.ptr;
hdr_rule->name = rule->name;
hdr_rule->pass = (rule->type == FCGI_RULE_PASS_HDR);
ebis_insert(&hdr_rules, &hdr_rule->node);
}
node = ebpt_first(&param_rules);
while (node) {
next = ebpt_next(node);
ebpt_delete(node);
param_rule = container_of(node, struct fcgi_param_rule, node);
node = next;
b_reset(value);
value->data = build_logline(s, value->area, value->size, param_rule->value);
if (!value->data)
continue;
if (!http_add_header(htx, param_rule->name, ist2(value->area, value->data)))
goto rewrite_err;
pool_free(pool_head_fcgi_param_rule, param_rule);
}
node = ebpt_first(&hdr_rules);
while (node) {
next = ebpt_next(node);
ebpt_delete(node);
hdr_rule = container_of(node, struct fcgi_hdr_rule, node);
node = next;
if (!hdr_rule->pass) {
ctx.blk = NULL;
while (http_find_header(htx, hdr_rule->name, &ctx, 1))
http_remove_header(htx, &ctx);
}
pool_free(pool_head_fcgi_hdr_rule, hdr_rule);
}
goto end;
rewrite_err:
_HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_rewrites, 1);
_HA_ATOMIC_ADD(&s->be->be_counters.failed_rewrites, 1);
if (sess->listener->counters)
_HA_ATOMIC_ADD(&sess->listener->counters->failed_rewrites, 1);
if (objt_server(s->target))
_HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_rewrites, 1);
hdr_rule_err:
node = ebpt_first(&hdr_rules);
while (node) {
next = ebpt_next(node);
ebpt_delete(node);
hdr_rule = container_of(node, struct fcgi_hdr_rule, node);
node = next;
pool_free(pool_head_fcgi_hdr_rule, hdr_rule);
}
param_rule_err:
node = ebpt_first(&param_rules);
while (node) {
next = ebpt_next(node);
ebpt_delete(node);
param_rule = container_of(node, struct fcgi_param_rule, node);
node = next;
pool_free(pool_head_fcgi_param_rule, param_rule);
}
end:
free_trash_chunk(value);
return 1;
}
struct flt_ops fcgi_flt_ops = {
.init = fcgi_flt_init,
.check = fcgi_flt_check,
.deinit = fcgi_flt_deinit,
.attach = fcgi_flt_start,
.detach = fcgi_flt_stop,
.http_headers = fcgi_flt_http_headers,
};
/**************************************************************************/
/*********************** FCGI Config parsing ******************************/
/**************************************************************************/
static int
parse_fcgi_flt(char **args, int *cur_arg, struct proxy *px,
struct flt_conf *fconf, char **err, void *private)
{
struct flt_conf *f, *back;
struct fcgi_flt_conf *fcgi_conf = NULL;
char *name = NULL;
int pos = *cur_arg;
/* Get the fcgi-app name*/
if (!*args[pos + 1]) {
memprintf(err, "%s : expects a <name> argument", args[pos]);
goto err;
}
name = strdup(args[pos + 1]);
if (!name) {
memprintf(err, "%s '%s' : out of memory", args[pos], args[pos + 1]);
goto err;
}
pos += 2;
/* Check if an fcgi-app filter with the same name already exists */
list_for_each_entry_safe(f, back, &px->filter_configs, list) {
if (f->id != fcgi_flt_id)
continue;
fcgi_conf = f->conf;
if (strcmp(name, fcgi_conf->name)) {
fcgi_conf = NULL;
continue;
}
/* Place the filter at its right position */
LIST_DEL(&f->list);
free(f);
free(name);
name = NULL;
break;
}
/* No other fcgi-app filter found, create configuration for the explicit one */
if (!fcgi_conf) {
fcgi_conf = calloc(1, sizeof(*fcgi_conf));
if (!fcgi_conf) {
memprintf(err, "%s: out of memory", args[*cur_arg]);
goto err;
}
fcgi_conf->name = name;
LIST_INIT(&fcgi_conf->param_rules);
LIST_INIT(&fcgi_conf->hdr_rules);
}
fconf->id = fcgi_flt_id;
fconf->conf = fcgi_conf;
fconf->ops = &fcgi_flt_ops;
*cur_arg = pos;
return 0;
err:
free(name);
return -1;
}
/* Parses the "use-fcgi-app" proxy keyword */
static int proxy_parse_use_fcgi_app(char **args, int section, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
struct flt_conf *fconf = NULL;
struct fcgi_flt_conf *fcgi_conf = NULL;
int retval = 0;
if (!(curpx->cap & PR_CAP_BE)) {
memprintf(err, "'%s' only available in backend or listen section", args[0]);
retval = -1;
goto end;
}
if (!*(args[1])) {
memprintf(err, "'%s' expects <name> as argument", args[0]);
retval = -1;
goto end;
}
/* check if a fcgi filter was already registered with this name,
* if that's the case, must use it. */
list_for_each_entry(fconf, &curpx->filter_configs, list) {
if (fconf->id == fcgi_flt_id) {
fcgi_conf = fconf->conf;
if (fcgi_conf && !strcmp((char *)fcgi_conf->name, args[1]))
goto end;
memprintf(err, "'%s' : only one fcgi-app supported per backend", args[0]);
retval = -1;
goto end;
}
}
/* Create the FCGI filter config */
fcgi_conf = calloc(1, sizeof(*fcgi_conf));
if (!fcgi_conf)
goto err;
fcgi_conf->name = strdup(args[1]);
LIST_INIT(&fcgi_conf->param_rules);
LIST_INIT(&fcgi_conf->hdr_rules);
/* Register the filter */
fconf = calloc(1, sizeof(*fconf));
if (!fconf)
goto err;
fconf->id = fcgi_flt_id;
fconf->conf = fcgi_conf;
fconf->ops = &fcgi_flt_ops;
LIST_ADDQ(&curpx->filter_configs, &fconf->list);
end:
return retval;
err:
if (fcgi_conf) {
free(fcgi_conf->name);
free(fcgi_conf);
}
memprintf(err, "out of memory");
retval = -1;
goto end;
}
/* Finishes the parsing of FCGI application of proxies and servers */
static int cfg_fcgi_apps_postparser()
{
struct fcgi_app *curapp;
struct proxy *px;
struct server *srv;
int err_code = 0;
for (px = proxies_list; px; px = px->next) {
struct fcgi_flt_conf *fcgi_conf = find_px_fcgi_conf(px);
int nb_fcgi_srv = 0;
if (px->mode == PR_MODE_TCP && fcgi_conf) {
ha_alert("config : proxy '%s': FCGI application cannot be used in non-HTTP mode.\n",
px->id);
err_code |= ERR_ALERT | ERR_FATAL;
goto end;
}
for (srv = px->srv; srv; srv = srv->next) {
if (srv->mux_proto && isteq(srv->mux_proto->token, ist("fcgi"))) {
nb_fcgi_srv++;
if (fcgi_conf)
continue;
ha_alert("config : proxy '%s': FCGI server '%s' has no FCGI app configured.\n",
px->id, srv->id);
err_code |= ERR_ALERT | ERR_FATAL;
goto end;
}
}
if (fcgi_conf && !nb_fcgi_srv) {
ha_alert("config : proxy '%s': FCGI app configured but no FCGI server found.\n",
px->id);
err_code |= ERR_ALERT | ERR_FATAL;
goto end;
}
}
for (curapp = fcgi_apps; curapp != NULL; curapp = curapp->next) {
if (!istlen(curapp->docroot)) {
ha_alert("config : fcgi-app '%s': no docroot configured.\n",
curapp->name);
err_code |= ERR_ALERT | ERR_FATAL;
goto end;
}
if (!(curapp->flags & (FCGI_APP_FL_MPXS_CONNS|FCGI_APP_FL_GET_VALUES))) {
if (curapp->maxreqs > 1) {
ha_warning("config : fcgi-app '%s': multiplexing not supported, "
"ignore the option 'max-reqs'.\n",
curapp->name);
err_code |= ERR_WARN;
}
curapp->maxreqs = 1;
}
}
end:
return err_code;
}
static int fcgi_app_add_rule(struct fcgi_app *curapp, enum fcgi_rule_type type, char *name, char *value,
struct acl_cond *cond, char **err)
{
struct fcgi_rule_conf *rule;
/* Param not found, add a new one */
rule = calloc(1, sizeof(*rule));
if (!rule)
goto err;
LIST_INIT(&rule->list);
rule->type = type;
if (type == FCGI_RULE_SET_PARAM || type == FCGI_RULE_UNSET_PARAM) {
struct ist fname = fcgi_param_name(trash.area, ist(name));
rule->name = my_strndup(fname.ptr, fname.len);
}
else { /* FCGI_RULE_PASS_HDR/FCGI_RULE_HIDE_HDR */
struct ist fname = ist2bin_lc(trash.area, ist(name));
rule->name = my_strndup(fname.ptr, fname.len);
}
if (!rule->name)
goto err;
if (value) {
rule->value = strdup(value);
if (!rule->value)
goto err;
}
rule->cond = cond;
LIST_ADDQ(&curapp->conf.rules, &rule->list);
return 1;
err:
if (rule) {
free(rule->name);
free(rule->value);
free(rule);
}
if (cond) {
prune_acl_cond(cond);
free(cond);
}
memprintf(err, "out of memory");
return 0;
}
/* Parses "fcgi-app" section */
static int cfg_parse_fcgi_app(const char *file, int linenum, char **args, int kwm)
{
static struct fcgi_app *curapp = NULL;
struct acl_cond *cond = NULL;
char *name, *value = NULL;
enum fcgi_rule_type type;
int err_code = 0;
const char *err;
char *errmsg = NULL;
if (!strcmp(args[0], "fcgi-app")) { /* new fcgi-app */
if (!*(args[1])) {
ha_alert("parsing [%s:%d]: '%s' expects <name> as argument.\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 (curapp = fcgi_apps; curapp != NULL; curapp = curapp->next) {
if (!strcmp(curapp->name, args[1])) {
ha_alert("Parsing [%s:%d]: fcgi-app section '%s' has the same name as another one declared at %s:%d.\n",
file, linenum, args[1], curapp->conf.file, curapp->conf.line);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
curapp = calloc(1, sizeof(*curapp));
if (!curapp) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curapp->next = fcgi_apps;
fcgi_apps = curapp;
curapp->flags = FCGI_APP_FL_KEEP_CONN;
curapp->docroot = ist(NULL);
curapp->index = ist(NULL);
curapp->pathinfo_re = NULL;
curapp->name = strdup(args[1]);
curapp->maxreqs = 1;
curapp->conf.file = strdup(file);
curapp->conf.line = linenum;
LIST_INIT(&curapp->acls);
LIST_INIT(&curapp->logsrvs);
LIST_INIT(&curapp->conf.args.list);
LIST_INIT(&curapp->conf.rules);
/* Set info about authentication */
if (!fcgi_app_add_rule(curapp, FCGI_RULE_SET_PARAM, "REMOTE_USER", "%[http_auth_user]", NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_SET_PARAM, "AUTH_TYPE", "%[http_auth_type]", NULL, &errmsg)) {
ha_alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
args[1], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
}
/* Hide hop-by-hop headers by default */
if (!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "connection", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "keep-alive", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "authorization", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "proxy", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "proxy-authorization", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "proxy-authenticate", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "te", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "trailers", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "transfer-encoding", NULL, NULL, &errmsg) ||
!fcgi_app_add_rule(curapp, FCGI_RULE_HIDE_HDR, "upgrade", NULL, NULL, &errmsg)) {
ha_alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
args[1], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
else if (!strcmp(args[0], "docroot")) {
if (!*(args[1])) {
ha_alert("parsing [%s:%d] : '%s' expects <path> as argument.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (alertif_too_many_args_idx(0, 1, file, linenum, args, &err_code))
goto out;
istfree(&curapp->docroot);
curapp->docroot = ist2(strdup(args[1]), strlen(args[1]));
if (!isttest(curapp->docroot)) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
}
}
else if (!strcmp(args[0], "path-info")) {
if (!*(args[1])) {
ha_alert("parsing [%s:%d] : '%s' expects <regex> as argument.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (alertif_too_many_args_idx(0, 1, file, linenum, args, &err_code))
goto out;
regex_free(curapp->pathinfo_re);
curapp->pathinfo_re = regex_comp(args[1], 1, 1, &errmsg);
if (!curapp->pathinfo_re) {
ha_alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
args[1], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
else if (!strcmp(args[0], "index")) {
if (!*(args[1])) {
ha_alert("parsing [%s:%d] : '%s' expects <filename> as argument.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (alertif_too_many_args_idx(0, 1, file, linenum, args, &err_code))
goto out;
istfree(&curapp->index);
curapp->index = ist2(strdup(args[1]), strlen(args[1]));
if (!isttest(curapp->index)) {
ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
}
}
else if (!strcmp(args[0], "acl")) {
const char *err;
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in acl name '%s'.\n",
file, linenum, *err, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (strcasecmp(args[1], "or") == 0) {
ha_alert("parsing [%s:%d] : acl name '%s' will never match. 'or' is used to express a "
"logical disjunction within a condition.\n",
file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (parse_acl((const char **)args+1, &curapp->acls, &errmsg, &curapp->conf.args, file, linenum) == NULL) {
ha_alert("parsing [%s:%d] : error detected while parsing ACL '%s' : %s.\n",
file, linenum, args[1], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (!strcmp(args[0], "set-param")) {
if (!*(args[1]) || !*(args[2])) {
ha_alert("parsing [%s:%d] : '%s' expects <name> and <value> as arguments.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
type = FCGI_RULE_SET_PARAM;
name = args[1];
value = args[2];
cond = NULL;
args += 3;
parse_cond_rule:
if (!*(args[0])) /* No condition */
goto add_rule;
if (strcmp(args[0], "if") == 0)
cond = parse_acl_cond((const char **)args+1, &curapp->acls, ACL_COND_IF, &errmsg, &curapp->conf.args,
file, linenum);
else if (strcmp(args[0], "unless") == 0)
cond = parse_acl_cond((const char **)args+1, &curapp->acls, ACL_COND_UNLESS, &errmsg, &curapp->conf.args,
file, linenum);
if (!cond) {
ha_alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
name, errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
}
add_rule:
if (!fcgi_app_add_rule(curapp, type, name, value, cond, &errmsg)) {
ha_alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
name, errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
#if 0 /* Disabled for now */
else if (!strcmp(args[0], "unset-param")) {
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;
}
type = FCGI_RULE_UNSET_PARAM;
name = args[1];
value = NULL;
cond = NULL;
args += 2;
goto parse_cond_rule;
}
#endif
else if (!strcmp(args[0], "pass-header")) {
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;
}
type = FCGI_RULE_PASS_HDR;
name = args[1];
value = NULL;
cond = NULL;
args += 2;
goto parse_cond_rule;
}
#if 0 /* Disabled for now */
else if (!strcmp(args[0], "hide-header")) {
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;
}
type = FCGI_RULE_HIDE_HDR;
name = args[1];
value = NULL;
cond = NULL;
args += 2;
goto parse_cond_rule;
}
#endif
else if (!strcmp(args[0], "option")) {
if (!*(args[1])) {
ha_alert("parsing [%s:%d]: '%s' expects an option name.\n",
file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
}
else if (!strcmp(args[1], "keep-conn")) {
if (alertif_too_many_args_idx(0, 1, file, linenum, args, &err_code))
goto out;
if (kwm == KWM_STD)
curapp->flags |= FCGI_APP_FL_KEEP_CONN;
else if (kwm == KWM_NO)
curapp->flags &= ~FCGI_APP_FL_KEEP_CONN;
}
else if (!strcmp(args[1], "get-values")) {
if (alertif_too_many_args_idx(0, 1, file, linenum, args, &err_code))
goto out;
if (kwm == KWM_STD)
curapp->flags |= FCGI_APP_FL_GET_VALUES;
else if (kwm == KWM_NO)
curapp->flags &= ~FCGI_APP_FL_GET_VALUES;
}
else if (!strcmp(args[1], "mpxs-conns")) {
if (alertif_too_many_args_idx(0, 1, file, linenum, args, &err_code))
goto out;
if (kwm == KWM_STD)
curapp->flags |= FCGI_APP_FL_MPXS_CONNS;
else if (kwm == KWM_NO)
curapp->flags &= ~FCGI_APP_FL_MPXS_CONNS;
}
else if (!strcmp(args[1], "max-reqs")) {
if (kwm != KWM_STD) {
ha_alert("parsing [%s:%d]: negation/default is not supported for option '%s'.\n",
file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (!*(args[2])) {
ha_alert("parsing [%s:%d]: option '%s' expects an integer argument.\n",
file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (alertif_too_many_args_idx(1, 1, file, linenum, args, &err_code))
goto out;
curapp->maxreqs = atol(args[2]);
if (!curapp->maxreqs) {
ha_alert("parsing [%s:%d]: option '%s' expects a strictly positive integer argument.\n",
file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else {
ha_alert("parsing [%s:%d] : unknown option '%s'.\n", file, linenum, args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
else if (!strcmp(args[0], "log-stderr")) {
if (!parse_logsrv(args, &curapp->logsrvs, (kwm == KWM_NO), &errmsg)) {
ha_alert("parsing [%s:%d] : %s : %s\n", file, linenum, args[0], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
}
}
else {
ha_alert("parsing [%s:%d]: unknown keyword '%s' in '%s' section\n", file, linenum, args[0], "fcgi-app");
err_code |= ERR_ALERT | ERR_FATAL;
}
out:
free(errmsg);
return err_code;
}
/**************************************************************************/
/*********************** FCGI Deinit functions ****************************/
/**************************************************************************/
void fcgi_apps_deinit()
{
struct fcgi_app *curapp, *nextapp;
struct logsrv *log, *logb;
for (curapp = fcgi_apps; curapp != NULL; curapp = nextapp) {
struct fcgi_rule_conf *rule, *back;
free(curapp->name);
istfree(&curapp->docroot);
istfree(&curapp->index);
regex_free(curapp->pathinfo_re);
free(curapp->conf.file);
list_for_each_entry_safe(log, logb, &curapp->logsrvs, list) {
LIST_DEL(&log->list);
free(log);
}
list_for_each_entry_safe(rule, back, &curapp->conf.rules, list) {
LIST_DEL(&rule->list);
fcgi_release_rule_conf(rule);
}
nextapp = curapp->next;
free(curapp);
}
}
/**************************************************************************/
/*************** Keywords definition and registration *********************/
/**************************************************************************/
static struct cfg_kw_list cfg_kws = {ILH, {
{ CFG_LISTEN, "use-fcgi-app", proxy_parse_use_fcgi_app },
{ 0, NULL, NULL },
}};
// FIXME: Add rep.fcgi smp_fetch
static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
{ "fcgi.docroot", smp_fetch_fcgi_docroot, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
{ "fcgi.index", smp_fetch_fcgi_index, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
{ /* END */ }
}};
/* Declare the filter parser for "fcgi-app" keyword */
static struct flt_kw_list filter_kws = { "FCGI", { }, {
{ "fcgi-app", parse_fcgi_flt, NULL },
{ NULL, NULL, NULL },
}
};
INITCALL1(STG_REGISTER, sample_register_fetches, &sample_fetch_keywords);
INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
INITCALL1(STG_REGISTER, flt_register_keywords, &filter_kws);
INITCALL1(STG_REGISTER, hap_register_post_deinit, fcgi_apps_deinit);
REGISTER_CONFIG_SECTION("fcgi-app", cfg_parse_fcgi_app, NULL);
REGISTER_CONFIG_POSTPARSER("fcgi-apps", cfg_fcgi_apps_postparser);
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/