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opt / cpanel / ea-ruby27 / src / passenger-release-6.1.2 / src / nginx_module /

?? ..
?? .clangd(81 B)
?? ConfigGeneral
?? Configuration.c(43.68 KB)
?? Configuration.h(3.42 KB)
?? ContentHandler.c(59.62 KB)
?? ContentHandler.h(2.24 KB)
?? LocationConfig
?? MainConfig
?? README.md(369 B)
?? StaticContentHandler.c(6.91 KB)
?? StaticContentHandler.h(1.74 KB)
?? config(5.8 KB)
?? ngx_http_passenger_module.c(22.79 KB)
?? ngx_http_passenger_module.h(2.66 KB)

Editing: Configuration.c

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) 2007 Manlio Perillo (manlio.perillo@gmail.com)
 * Copyright (c) 2010-2025 Asynchronous B.V.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>

#include <sys/types.h>
#include <pwd.h>
#include <stdlib.h>
#include <assert.h>

#include "ngx_http_passenger_module.h"
#include "Configuration.h"
#include "ContentHandler.h"
#include "ConfigGeneral/AutoGeneratedManifestDefaultsInitialization.c"
#include "ConfigGeneral/AutoGeneratedSetterFuncs.c"
#include "ConfigGeneral/ManifestGeneration.c"
#include "MainConfig/AutoGeneratedCreateFunction.c"
#include "MainConfig/AutoGeneratedManifestGeneration.c"
#include "LocationConfig/AutoGeneratedCreateFunction.c"
#include "LocationConfig/AutoGeneratedManifestGeneration.c"
#include "cxx_supportlib/Constants.h"
#include "cxx_supportlib/vendor-modified/modp_b64.h"

static ngx_str_t headers_to_hide[] = {
    /* NOTE: Do not hide the "Status" header; some broken HTTP clients
     * expect this header. http://code.google.com/p/phusion-passenger/issues/detail?id=177
     */
    ngx_string("X-Accel-Expires"),
    ngx_string("X-Accel-Redirect"),
    ngx_string("X-Accel-Limit-Rate"),
    ngx_string("X-Accel-Buffering"),
    ngx_null_string
};

passenger_main_conf_t passenger_main_conf;

static ngx_path_init_t  ngx_http_passenger_temp_path = {
    ngx_string(NGX_HTTP_PASSENGER_TEMP_PATH), { 1, 2, 0 }
};

static ngx_int_t merge_headers(ngx_conf_t *cf, passenger_loc_conf_t *conf,
    passenger_loc_conf_t *prev);
static ngx_int_t merge_string_array(ngx_conf_t *cf, ngx_array_t **prev,
    ngx_array_t **conf);
static ngx_int_t merge_string_keyval_table(ngx_conf_t *cf, ngx_array_t **prev,
    ngx_array_t **conf);

#include "LocationConfig/AutoGeneratedMergeFunction.c"
#include "LocationConfig/AutoGeneratedHeaderSerialization.c"

void *
passenger_create_main_conf(ngx_conf_t *cf)
{
    passenger_main_conf_t *conf;

conf = ngx_pcalloc(cf->pool, sizeof(passenger_main_conf_t));
    if (conf == NULL) {
        return NGX_CONF_ERROR;
    }

conf->default_ruby.data = NULL;
    conf->default_ruby.len = 0;

passenger_create_autogenerated_main_conf(&conf->autogenerated);

return conf;
}

char *
passenger_init_main_conf(ngx_conf_t *cf, void *conf_pointer)
{
    passenger_main_conf_t *conf;
    struct passwd         *user_entry;
    struct group          *group_entry;
    char buf[128];

conf = &passenger_main_conf;
    *conf = *((passenger_main_conf_t *) conf_pointer);

if (conf->autogenerated.abort_on_startup_error == NGX_CONF_UNSET) {
        conf->autogenerated.abort_on_startup_error = 0;
    }

if (conf->autogenerated.show_version_in_header == NGX_CONF_UNSET) {
        conf->autogenerated.show_version_in_header = 1;
    }

if (conf->autogenerated.default_user.len == 0) {
        conf->autogenerated.default_user.len  = sizeof(DEFAULT_WEB_APP_USER) - 1;
        conf->autogenerated.default_user.data = (u_char *) DEFAULT_WEB_APP_USER;
    }
    if (conf->autogenerated.default_user.len > sizeof(buf) - 1) {
        return "Value for 'passenger_default_user' is too long.";
    }
    memcpy(buf, conf->autogenerated.default_user.data, conf->autogenerated.default_user.len);
    buf[conf->autogenerated.default_user.len] = '\0';
    user_entry = getpwnam(buf);
    if (user_entry == NULL) {
        return "The user specified by the 'passenger_default_user' option does not exist.";
    }

if (conf->autogenerated.default_group.len > 0) {
        if (conf->autogenerated.default_group.len > sizeof(buf) - 1) {
            return "Value for 'passenger_default_group' is too long.";
        }
        memcpy(buf, conf->autogenerated.default_group.data, conf->autogenerated.default_group.len);
        buf[conf->autogenerated.default_group.len] = '\0';
        group_entry = getgrnam(buf);
        if (group_entry == NULL) {
            return "The group specified by the 'passenger_default_group' option does not exist.";
        }
    }

return NGX_CONF_OK;
}

void *
passenger_create_loc_conf(ngx_conf_t *cf)
{
    passenger_loc_conf_t  *conf;

conf = ngx_pcalloc(cf->pool, sizeof(passenger_loc_conf_t));
    if (conf == NULL) {
        return NGX_CONF_ERROR;
    }

/*
     * set by ngx_pcalloc():
     *
     *     conf->upstream_config.bufs.num = 0;
     *     conf->upstream_config.next_upstream = 0;
     *     conf->upstream_config.temp_path = NULL;
     *     conf->upstream_config.hide_headers_hash = { NULL, 0 };
     *     conf->upstream_config.hide_headers = NULL;
     *     conf->upstream_config.pass_headers = NULL;
     *     conf->upstream_config.uri = { 0, NULL };
     *     conf->upstream_config.location = NULL;
     *     conf->upstream_config.store_lengths = NULL;
     *     conf->upstream_config.store_values = NULL;
     */

conf->parent = NULL;
    if (ngx_array_init(&conf->children, cf->pool, 8,
                       sizeof(passenger_loc_conf_t *))
        != NGX_OK)
    {
        return NGX_CONF_ERROR;
    }

if (cf->conf_file == NULL) {
        conf->context_source_file.data = (u_char *) NULL;
        conf->context_source_file.len = 0;
        conf->context_source_line = 0;
    } else if (cf->conf_file->file.fd == NGX_INVALID_FILE) {
        conf->context_source_file.data = (u_char *) "(command line)";
        conf->context_source_file.len = sizeof("(command line)") - 1;
        conf->context_source_line = 0;
    } else {
        conf->context_source_file = cf->conf_file->file.name;
        conf->context_source_line = cf->conf_file->line;
    }

conf->cscf = NULL;
    conf->clcf = NULL;

passenger_create_autogenerated_loc_conf(&conf->autogenerated);

/******************************/
    /******************************/

conf->upstream_config.pass_headers = NGX_CONF_UNSET_PTR;
    conf->upstream_config.hide_headers = NGX_CONF_UNSET_PTR;

conf->upstream_config.store = NGX_CONF_UNSET;
    conf->upstream_config.store_access = NGX_CONF_UNSET_UINT;
    #if NGINX_VERSION_NUM >= 1007005
        conf->upstream_config.next_upstream_tries = NGX_CONF_UNSET_UINT;
    #endif
    conf->upstream_config.buffering = NGX_CONF_UNSET;
    conf->upstream_config.request_buffering = NGX_CONF_UNSET;
    conf->upstream_config.ignore_client_abort = NGX_CONF_UNSET;
    #if NGINX_VERSION_NUM >= 1007007
        conf->upstream_config.force_ranges = NGX_CONF_UNSET;
    #endif

conf->upstream_config.local = NGX_CONF_UNSET_PTR;

conf->upstream_config.connect_timeout = NGX_CONF_UNSET_MSEC;
    conf->upstream_config.send_timeout = NGX_CONF_UNSET_MSEC;
    conf->upstream_config.read_timeout = NGX_CONF_UNSET_MSEC;
    #if NGINX_VERSION_NUM >= 1007005
        conf->upstream_config.next_upstream_timeout = NGX_CONF_UNSET_MSEC;
    #endif

conf->upstream_config.send_lowat = NGX_CONF_UNSET_SIZE;
    conf->upstream_config.buffer_size = NGX_CONF_UNSET_SIZE;
    #if NGINX_VERSION_NUM >= 1027000
        conf->upstream_config.limit_rate = NGX_CONF_UNSET_PTR;
    #elif NGINX_VERSION_NUM >= 1007007
        conf->upstream_config.limit_rate = NGX_CONF_UNSET_SIZE;
    #endif

conf->upstream_config.busy_buffers_size_conf = NGX_CONF_UNSET_SIZE;
    conf->upstream_config.max_temp_file_size_conf = NGX_CONF_UNSET_SIZE;
    conf->upstream_config.temp_file_write_size_conf = NGX_CONF_UNSET_SIZE;

conf->upstream_config.pass_request_headers = NGX_CONF_UNSET;
    conf->upstream_config.pass_request_body = NGX_CONF_UNSET;

#if (NGX_HTTP_CACHE)
    #if NGINX_VERSION_NUM >= 1007009
        conf->upstream_config.cache = NGX_CONF_UNSET;
    #else
        conf->upstream_config.cache = NGX_CONF_UNSET_PTR;
    #endif
    conf->upstream_config.cache_min_uses = NGX_CONF_UNSET_UINT;
    conf->upstream_config.cache_bypass = NGX_CONF_UNSET_PTR;
    conf->upstream_config.no_cache = NGX_CONF_UNSET_PTR;
    conf->upstream_config.cache_valid = NGX_CONF_UNSET_PTR;
    conf->upstream_config.cache_lock = NGX_CONF_UNSET;
    conf->upstream_config.cache_lock_timeout = NGX_CONF_UNSET_MSEC;
    #if NGINX_VERSION_NUM >= 1007008
        conf->upstream_config.cache_lock_age = NGX_CONF_UNSET_MSEC;
    #endif
    #if NGINX_VERSION_NUM >= 1006000
        conf->upstream_config.cache_revalidate = NGX_CONF_UNSET;
    #endif
#endif

conf->upstream_config.intercept_errors = NGX_CONF_UNSET;

conf->upstream_config.cyclic_temp_file = 0;
    conf->upstream_config.change_buffering = 1;

ngx_str_set(&conf->upstream_config.module, "passenger");

conf->options_cache.data  = NULL;
    conf->options_cache.len   = 0;
    conf->env_vars_cache.data = NULL;
    conf->env_vars_cache.len  = 0;

return conf;
}

static ngx_int_t
serialize_loc_conf_to_headers(ngx_conf_t *cf, passenger_loc_conf_t *conf)
{
    ngx_uint_t     i;
    ngx_keyval_t  *env_vars;
    size_t         unencoded_len;
    u_char        *unencoded_buf;

if (passenger_serialize_autogenerated_loc_conf_to_headers(cf, conf) == 0) {
        return NGX_ERROR;
    }

if (conf->autogenerated.env_vars != NULL) {
        size_t len = 0;
        u_char *buf;
        u_char *pos;

/* Cache env vars data as base64-serialized string.
         * First, calculate the length of the unencoded data.
         */

unencoded_len = 0;
        env_vars = (ngx_keyval_t *) conf->autogenerated.env_vars->elts;

for (i = 0; i < conf->autogenerated.env_vars->nelts; i++) {
            unencoded_len += env_vars[i].key.len + 1 + env_vars[i].value.len + 1;
        }

/* Create the unecoded data. */

unencoded_buf = pos = (u_char *) malloc(unencoded_len);
        if (unencoded_buf == NULL) {
            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                               "cannot allocate buffer of %z bytes for environment variables data",
                               unencoded_len);
            return NGX_ERROR;
        }

for (i = 0; i < conf->autogenerated.env_vars->nelts; i++) {
            pos = ngx_copy(pos, env_vars[i].key.data, env_vars[i].key.len);
            *pos = '\0';
            pos++;

pos = ngx_copy(pos, env_vars[i].value.data, env_vars[i].value.len);
            *pos = '\0';
            pos++;
        }

assert((size_t) (pos - unencoded_buf) == unencoded_len);

/* Create base64-serialized string. */

buf = ngx_palloc(cf->pool, modp_b64_encode_len(unencoded_len));
        if (buf == NULL) {
            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                               "cannot allocate buffer of %z bytes for base64 encoding",
                               modp_b64_encode_len(unencoded_len));
            return NGX_ERROR;
        }
        len = modp_b64_encode((char *) buf, (const char *) unencoded_buf, unencoded_len);
        if (len == (size_t) -1) {
            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                               "error during base64 encoding");
            free(unencoded_buf);
            return NGX_ERROR;
        }

conf->env_vars_cache.data = buf;
        conf->env_vars_cache.len = len;
        free(unencoded_buf);
    }

return NGX_OK;
}

char *
passenger_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
    passenger_loc_conf_t         *prev = parent;
    passenger_loc_conf_t         *conf = child;
    passenger_loc_conf_t         **children_elem;
    ngx_http_core_loc_conf_t     *clcf;

size_t                        size;
    ngx_hash_init_t               hash;

clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
    /* The following works for all contexts within the http{} block, but does
     * not work for the http{} block itself. To obtain the ngx_http_core_(loc|srv)_conf_t
     * associated with the http{} block itself, we also set conf->(cscf|clcf)
     * from record_loc_conf_source_location(), which is called from the various
     * configuration setter functions.
     */
     conf->cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module);
     conf->clcf = clcf;

if (passenger_merge_autogenerated_loc_conf(&conf->autogenerated, &prev->autogenerated, cf) == 0) {
        return NGX_CONF_ERROR;
    }

conf->parent = prev;
    children_elem = ngx_array_push(&prev->children);
    if (children_elem == NULL) {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
            "cannot allocate memory");
        return NGX_CONF_ERROR;
    }
    *children_elem = conf;

if (prev->options_cache.data == NULL) {
        if (serialize_loc_conf_to_headers(cf, prev) != NGX_OK) {
            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                               "cannot create " PROGRAM_NAME " configuration serialization cache");
            return NGX_CONF_ERROR;
        }
    }

/******************************/
    /******************************/

#if (NGX_HTTP_CACHE) && NGINX_VERSION_NUM >= 1007009
        if (conf->upstream_config.store > 0) {
            conf->upstream_config.cache = 0;
        }
        if (conf->upstream_config.cache > 0) {
            conf->upstream_config.store = 0;
        }
    #endif

#if NGINX_VERSION_NUM >= 1007009
        if (conf->upstream_config.store == NGX_CONF_UNSET) {
            ngx_conf_merge_value(conf->upstream_config.store,
                                      prev->upstream_config.store, 0);

conf->upstream_config.store_lengths = prev->upstream_config.store_lengths;
            conf->upstream_config.store_values = prev->upstream_config.store_values;
        }
    #else
        if (conf->upstream_config.store != 0) {
            ngx_conf_merge_value(conf->upstream_config.store,
                                      prev->upstream_config.store, 0);

if (conf->upstream_config.store_lengths == NULL) {
                conf->upstream_config.store_lengths = prev->upstream_config.store_lengths;
                conf->upstream_config.store_values = prev->upstream_config.store_values;
            }
        }
    #endif

ngx_conf_merge_uint_value(conf->upstream_config.store_access,
                              prev->upstream_config.store_access, 0600);

#if NGINX_VERSION_NUM >= 1007005
        ngx_conf_merge_uint_value(conf->upstream_config.next_upstream_tries,
                                  prev->upstream_config.next_upstream_tries, 0);
    #endif

ngx_conf_merge_value(conf->upstream_config.buffering,
                         prev->upstream_config.buffering, 0);

ngx_conf_merge_value(conf->upstream_config.request_buffering,
                         prev->upstream_config.request_buffering, 1);

ngx_conf_merge_value(conf->upstream_config.ignore_client_abort,
                         prev->upstream_config.ignore_client_abort, 0);

#if NGINX_VERSION_NUM >= 1007007
        ngx_conf_merge_value(conf->upstream_config.force_ranges,
                             prev->upstream_config.force_ranges, 0);
    #endif

ngx_conf_merge_ptr_value(conf->upstream_config.local,
                             prev->upstream_config.local, NULL);

ngx_conf_merge_msec_value(conf->upstream_config.connect_timeout,
                              prev->upstream_config.connect_timeout, 12000000);

ngx_conf_merge_msec_value(conf->upstream_config.send_timeout,
                              prev->upstream_config.send_timeout, 12000000);

ngx_conf_merge_msec_value(conf->upstream_config.read_timeout,
                              prev->upstream_config.read_timeout, 12000000);

#if NGINX_VERSION_NUM >= 1007005
        ngx_conf_merge_msec_value(conf->upstream_config.next_upstream_timeout,
                                  prev->upstream_config.next_upstream_timeout, 0);
    #endif

ngx_conf_merge_size_value(conf->upstream_config.send_lowat,
                              prev->upstream_config.send_lowat, 0);

ngx_conf_merge_size_value(conf->upstream_config.buffer_size,
                              prev->upstream_config.buffer_size,
                              16 * 1024);

#if NGINX_VERSION_NUM >= 1027000
        ngx_conf_merge_ptr_value(conf->upstream_config.limit_rate,
                                 prev->upstream_config.limit_rate, NULL);
    #elif NGINX_VERSION_NUM >= 1007007
        ngx_conf_merge_size_value(conf->upstream_config.limit_rate,
                                  prev->upstream_config.limit_rate, 0);
    #endif

ngx_conf_merge_bufs_value(conf->upstream_config.bufs, prev->upstream_config.bufs,
                              8, 16 * 1024);

if (conf->upstream_config.bufs.num < 2) {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                           "there must be at least 2 \"passenger_buffers\"");
        return NGX_CONF_ERROR;
    }

size = conf->upstream_config.buffer_size;
    if (size < conf->upstream_config.bufs.size) {
        size = conf->upstream_config.bufs.size;
    }

ngx_conf_merge_size_value(conf->upstream_config.busy_buffers_size_conf,
                              prev->upstream_config.busy_buffers_size_conf,
                              NGX_CONF_UNSET_SIZE);

if (conf->upstream_config.busy_buffers_size_conf == NGX_CONF_UNSET_SIZE) {
        conf->upstream_config.busy_buffers_size = 2 * size;
    } else {
        conf->upstream_config.busy_buffers_size =
                                         conf->upstream_config.busy_buffers_size_conf;
    }

if (conf->upstream_config.busy_buffers_size < size) {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
             "\"passenger_busy_buffers_size\" must be equal to or greater "
             "than the maximum of the value of \"passenger_buffer_size\" and "
             "one of the \"passenger_buffers\"");

return NGX_CONF_ERROR;
    }

if (conf->upstream_config.busy_buffers_size
        > (conf->upstream_config.bufs.num - 1) * conf->upstream_config.bufs.size)
    {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
             "\"passenger_busy_buffers_size\" must be less than "
             "the size of all \"passenger_buffers\" minus one buffer");

return NGX_CONF_ERROR;
    }

ngx_conf_merge_size_value(conf->upstream_config.temp_file_write_size_conf,
                              prev->upstream_config.temp_file_write_size_conf,
                              NGX_CONF_UNSET_SIZE);

if (conf->upstream_config.temp_file_write_size_conf == NGX_CONF_UNSET_SIZE) {
        conf->upstream_config.temp_file_write_size = 2 * size;
    } else {
        conf->upstream_config.temp_file_write_size =
                                      conf->upstream_config.temp_file_write_size_conf;
    }

if (conf->upstream_config.temp_file_write_size < size) {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
             "\"passenger_temp_file_write_size\" must be equal to or greater than "
             "the maximum of the value of \"passenger_buffer_size\" and "
             "one of the \"passenger_buffers\"");

return NGX_CONF_ERROR;
    }

ngx_conf_merge_size_value(conf->upstream_config.max_temp_file_size_conf,
                              prev->upstream_config.max_temp_file_size_conf,
                              NGX_CONF_UNSET_SIZE);

if (conf->upstream_config.max_temp_file_size_conf == NGX_CONF_UNSET_SIZE) {
        conf->upstream_config.max_temp_file_size = 1024 * 1024 * 1024;
    } else {
        conf->upstream_config.max_temp_file_size =
                                        conf->upstream_config.max_temp_file_size_conf;
    }

if (conf->upstream_config.max_temp_file_size != 0
        && conf->upstream_config.max_temp_file_size < size)
    {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
             "\"passenger_max_temp_file_size\" must be equal to zero to disable "
             "temporary files usage or must be equal to or greater than "
             "the maximum of the value of \"passenger_buffer_size\" and "
             "one of the \"passenger_buffers\"");

return NGX_CONF_ERROR;
    }

ngx_conf_merge_bitmask_value(conf->upstream_config.ignore_headers,
                                 prev->upstream_config.ignore_headers,
                                 NGX_CONF_BITMASK_SET);

ngx_conf_merge_bitmask_value(conf->upstream_config.next_upstream,
                              prev->upstream_config.next_upstream,
                              (NGX_CONF_BITMASK_SET
                               |NGX_HTTP_UPSTREAM_FT_ERROR
                               |NGX_HTTP_UPSTREAM_FT_TIMEOUT));

if (conf->upstream_config.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
        conf->upstream_config.next_upstream = NGX_CONF_BITMASK_SET
                                       |NGX_HTTP_UPSTREAM_FT_OFF;
    }

if (ngx_conf_merge_path_value(cf,
                              &conf->upstream_config.temp_path,
                              prev->upstream_config.temp_path,
                              &ngx_http_passenger_temp_path)
        != NGX_OK)
    {
        return NGX_CONF_ERROR;
    }

#if (NGX_HTTP_CACHE)

#if NGINX_VERSION_NUM >= 1007009
        if (conf->upstream_config.cache == NGX_CONF_UNSET) {
           ngx_conf_merge_value(conf->upstream_config.cache,
                                prev->upstream_config.cache, 0);

conf->upstream_config.cache_zone = prev->upstream_config.cache_zone;
           conf->upstream_config.cache_value = prev->upstream_config.cache_value;
        }

if (conf->upstream_config.cache_zone && conf->upstream_config.cache_zone->data == NULL) {
            ngx_shm_zone_t  *shm_zone;

shm_zone = conf->upstream_config.cache_zone;

ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                               "\"scgi_cache\" zone \"%V\" is unknown",
                               &shm_zone->shm.name);

return NGX_CONF_ERROR;
        }
    #else
        ngx_conf_merge_ptr_value(conf->upstream_config.cache,
                                 prev->upstream_config.cache, NULL);

if (conf->upstream_config.cache && conf->upstream_config.cache->data == NULL) {
            ngx_shm_zone_t  *shm_zone;

shm_zone = conf->upstream_config.cache;

ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                               "\"scgi_cache\" zone \"%V\" is unknown",
                               &shm_zone->shm.name);

return NGX_CONF_ERROR;
        }
    #endif

ngx_conf_merge_uint_value(conf->upstream_config.cache_min_uses,
                              prev->upstream_config.cache_min_uses, 1);

ngx_conf_merge_bitmask_value(conf->upstream_config.cache_use_stale,
                              prev->upstream_config.cache_use_stale,
                              (NGX_CONF_BITMASK_SET
                               | NGX_HTTP_UPSTREAM_FT_OFF));

if (conf->upstream_config.cache_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) {
        conf->upstream_config.cache_use_stale = NGX_CONF_BITMASK_SET
                                                | NGX_HTTP_UPSTREAM_FT_OFF;
    }

if (conf->upstream_config.cache_use_stale & NGX_HTTP_UPSTREAM_FT_ERROR) {
        conf->upstream_config.cache_use_stale |= NGX_HTTP_UPSTREAM_FT_NOLIVE;
    }

if (conf->upstream_config.cache_methods == 0) {
        conf->upstream_config.cache_methods = prev->upstream_config.cache_methods;
    }

conf->upstream_config.cache_methods |= NGX_HTTP_GET | NGX_HTTP_HEAD;

ngx_conf_merge_ptr_value(conf->upstream_config.cache_bypass,
                             prev->upstream_config.cache_bypass, NULL);

ngx_conf_merge_ptr_value(conf->upstream_config.no_cache,
                             prev->upstream_config.no_cache, NULL);

ngx_conf_merge_ptr_value(conf->upstream_config.cache_valid,
                             prev->upstream_config.cache_valid, NULL);

if (conf->cache_key.value.data == NULL) {
        conf->cache_key = prev->cache_key;
    }

ngx_conf_merge_value(conf->upstream_config.cache_lock,
                         prev->upstream_config.cache_lock, 0);

ngx_conf_merge_msec_value(conf->upstream_config.cache_lock_timeout,
                              prev->upstream_config.cache_lock_timeout, 5000);

ngx_conf_merge_value(conf->upstream_config.cache_revalidate,
                         prev->upstream_config.cache_revalidate, 0);

#if NGINX_VERSION_NUM >= 1007008
        ngx_conf_merge_msec_value(conf->upstream_config.cache_lock_age,
                                  prev->upstream_config.cache_lock_age, 5000);
    #endif

#if NGINX_VERSION_NUM >= 1006000
        ngx_conf_merge_value(conf->upstream_config.cache_revalidate,
                             prev->upstream_config.cache_revalidate, 0);
    #endif

#endif

ngx_conf_merge_value(conf->upstream_config.pass_request_headers,
                         prev->upstream_config.pass_request_headers, 1);
    ngx_conf_merge_value(conf->upstream_config.pass_request_body,
                         prev->upstream_config.pass_request_body, 1);

ngx_conf_merge_value(conf->upstream_config.intercept_errors,
                         prev->upstream_config.intercept_errors, 0);

hash.max_size = 512;
    hash.bucket_size = ngx_align(64, ngx_cacheline_size);
    hash.name = "passenger_hide_headers_hash";

if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream_config,
            &prev->upstream_config, headers_to_hide, &hash)
        != NGX_OK)
    {
        return NGX_CONF_ERROR;
    }

if (conf->upstream_config.upstream == NULL) {
        conf->upstream_config.upstream = prev->upstream_config.upstream;
    }

if (conf->autogenerated.enabled == 1 /* and not NGX_CONF_UNSET */
     && passenger_main_conf.autogenerated.root_dir.len != 0
     && clcf->handler == NULL /* no handler set by other modules */)
    {
        clcf->handler = passenger_content_handler;
    }

conf->autogenerated.headers_hash_bucket_size = ngx_align(
        conf->autogenerated.headers_hash_bucket_size,
        ngx_cacheline_size);
    hash.max_size = conf->autogenerated.headers_hash_max_size;
    hash.bucket_size = conf->autogenerated.headers_hash_bucket_size;
    hash.name = "passenger_headers_hash";

if (merge_headers(cf, conf, prev) != NGX_OK) {
        return NGX_CONF_ERROR;
    }

if (serialize_loc_conf_to_headers(cf, conf) != NGX_OK) {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                           "cannot create " PROGRAM_NAME " configuration serialization cache");
        return NGX_CONF_ERROR;
    }

return NGX_CONF_OK;
}

static ngx_int_t
merge_headers(ngx_conf_t *cf, passenger_loc_conf_t *conf, passenger_loc_conf_t *prev)
{
    u_char                       *p;
    size_t                        size;
    uintptr_t                    *code;
    ngx_uint_t                    i;
    ngx_array_t                   headers_names, headers_merged;
    ngx_keyval_t                 *src, *s;
    ngx_hash_key_t               *hk;
    ngx_hash_init_t               hash;
    ngx_http_script_compile_t     sc;
    ngx_http_script_copy_code_t  *copy;

if (conf->autogenerated.headers_source == NULL) {
        conf->flushes = prev->flushes;
        conf->headers_set_len = prev->headers_set_len;
        conf->headers_set = prev->headers_set;
        conf->headers_set_hash = prev->headers_set_hash;
        conf->autogenerated.headers_source = prev->autogenerated.headers_source;
    }

if (conf->headers_set_hash.buckets
#if (NGX_HTTP_CACHE)
    #if NGINX_VERSION_NUM >= 1007009
        && ((conf->upstream_config.cache == NGX_CONF_UNSET) == (prev->upstream_config.cache == NGX_CONF_UNSET))
    #else
        && ((conf->upstream_config.cache == NGX_CONF_UNSET_PTR) == (prev->upstream_config.cache == NGX_CONF_UNSET_PTR))
    #endif
#endif
       )
    {
        return NGX_OK;
    }

if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
        != NGX_OK)
    {
        return NGX_ERROR;
    }

if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t))
        != NGX_OK)
    {
        return NGX_ERROR;
    }

if (conf->autogenerated.headers_source == NULL) {
        conf->autogenerated.headers_source = ngx_array_create(cf->pool, 4,
                                                sizeof(ngx_keyval_t));
        if (conf->autogenerated.headers_source == NULL) {
            return NGX_ERROR;
        }
    }

conf->headers_set_len = ngx_array_create(cf->pool, 64, 1);
    if (conf->headers_set_len == NULL) {
        return NGX_ERROR;
    }

conf->headers_set = ngx_array_create(cf->pool, 512, 1);
    if (conf->headers_set == NULL) {
        return NGX_ERROR;
    }

src = conf->autogenerated.headers_source->elts;
    for (i = 0; i < conf->autogenerated.headers_source->nelts; i++) {

s = ngx_array_push(&headers_merged);
        if (s == NULL) {
            return NGX_ERROR;
        }

*s = src[i];
    }

src = headers_merged.elts;
    for (i = 0; i < headers_merged.nelts; i++) {

hk = ngx_array_push(&headers_names);
        if (hk == NULL) {
            return NGX_ERROR;
        }

hk->key = src[i].key;
        hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len);
        hk->value = (void *) 1;

if (src[i].value.len == 0) {
            continue;
        }

if (ngx_http_script_variables_count(&src[i].value) == 0) {
            copy = ngx_array_push_n(conf->headers_set_len,
                                    sizeof(ngx_http_script_copy_code_t));
            if (copy == NULL) {
                return NGX_ERROR;
            }

copy->code = (ngx_http_script_code_pt) (void *)
                                                 ngx_http_script_copy_len_code;
            copy->len = src[i].key.len + sizeof(": ") - 1
                        + src[i].value.len + sizeof(CRLF) - 1;

size = (sizeof(ngx_http_script_copy_code_t)
                       + src[i].key.len + sizeof(": ") - 1
                       + src[i].value.len + sizeof(CRLF) - 1
                       + sizeof(uintptr_t) - 1)
                    & ~(sizeof(uintptr_t) - 1);

copy = ngx_array_push_n(conf->headers_set, size);
            if (copy == NULL) {
                return NGX_ERROR;
            }

copy->code = ngx_http_script_copy_code;
            copy->len = src[i].key.len + sizeof(": ") - 1
                        + src[i].value.len + sizeof(CRLF) - 1;

p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);

p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
            *p++ = ':'; *p++ = ' ';
            p = ngx_cpymem(p, src[i].value.data, src[i].value.len);
            *p++ = CR; *p = LF;

} else {
            copy = ngx_array_push_n(conf->headers_set_len,
                                    sizeof(ngx_http_script_copy_code_t));
            if (copy == NULL) {
                return NGX_ERROR;
            }

copy->code = (ngx_http_script_code_pt) (void *)
                                                 ngx_http_script_copy_len_code;
            copy->len = src[i].key.len + sizeof(": ") - 1;

size = (sizeof(ngx_http_script_copy_code_t)
                    + src[i].key.len + sizeof(": ") - 1 + sizeof(uintptr_t) - 1)
                    & ~(sizeof(uintptr_t) - 1);

copy = ngx_array_push_n(conf->headers_set, size);
            if (copy == NULL) {
                return NGX_ERROR;
            }

copy->code = ngx_http_script_copy_code;
            copy->len = src[i].key.len + sizeof(": ") - 1;

p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
            p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
            *p++ = ':'; *p = ' ';

ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));

sc.cf = cf;
            sc.source = &src[i].value;
            sc.flushes = &conf->flushes;
            sc.lengths = &conf->headers_set_len;
            sc.values = &conf->headers_set;

if (ngx_http_script_compile(&sc) != NGX_OK) {
                return NGX_ERROR;
            }

copy = ngx_array_push_n(conf->headers_set_len,
                                    sizeof(ngx_http_script_copy_code_t));
            if (copy == NULL) {
                return NGX_ERROR;
            }

copy->code = (ngx_http_script_code_pt) (void *)
                                                 ngx_http_script_copy_len_code;
            copy->len = sizeof(CRLF) - 1;

size = (sizeof(ngx_http_script_copy_code_t)
                    + sizeof(CRLF) - 1 + sizeof(uintptr_t) - 1)
                    & ~(sizeof(uintptr_t) - 1);

copy = ngx_array_push_n(conf->headers_set, size);
            if (copy == NULL) {
                return NGX_ERROR;
            }

copy->code = ngx_http_script_copy_code;
            copy->len = sizeof(CRLF) - 1;

p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
            *p++ = CR; *p = LF;
        }

code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t));
        if (code == NULL) {
            return NGX_ERROR;
        }

*code = (uintptr_t) NULL;

code = ngx_array_push_n(conf->headers_set, sizeof(uintptr_t));
        if (code == NULL) {
            return NGX_ERROR;
        }

*code = (uintptr_t) NULL;
    }

code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t));
    if (code == NULL) {
        return NGX_ERROR;
    }

*code = (uintptr_t) NULL;

hash.hash = &conf->headers_set_hash;
    hash.key = ngx_hash_key_lc;
    hash.max_size = conf->autogenerated.headers_hash_max_size;
    hash.bucket_size = conf->autogenerated.headers_hash_bucket_size;
    hash.name = "passenger_headers_hash";
    hash.pool = cf->pool;
    hash.temp_pool = NULL;

return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts);
}

static ngx_int_t
merge_string_array(ngx_conf_t *cf, ngx_array_t **prev, ngx_array_t **conf)
{
    ngx_str_t  *prev_elems, *elem;
    ngx_uint_t  i;

if (*prev != NGX_CONF_UNSET_PTR) {
        if (*conf == NGX_CONF_UNSET_PTR) {
            *conf = ngx_array_create(cf->pool, 4, sizeof(ngx_str_t));
            if (*conf == NULL) {
                return NGX_ERROR;
            }
        }

prev_elems = (ngx_str_t *) (*prev)->elts;
        for (i = 0; i < (*prev)->nelts; i++) {
            elem = (ngx_str_t *) ngx_array_push(*conf);
            if (elem == NULL) {
                return NGX_ERROR;
            }
            *elem = prev_elems[i];
        }
    }

return NGX_OK;
}

ngx_int_t
passenger_postprocess_config(ngx_conf_t *cf)
{
    ngx_http_conf_ctx_t  *http_ctx;
    passenger_loc_conf_t *toplevel_plcf;
    ngx_pool_cleanup_t   *manifest_cleanup;
    char                 *dump_path, *dump_content;
    FILE                 *dump_file;
    u_char               *end;

http_ctx = cf->ctx;
    toplevel_plcf = http_ctx->loc_conf[ngx_http_passenger_module.ctx_index];

passenger_main_conf.default_ruby = toplevel_plcf->autogenerated.ruby;
    if (passenger_main_conf.default_ruby.len == 0) {
        passenger_main_conf.default_ruby.data = (u_char *) DEFAULT_RUBY;
        passenger_main_conf.default_ruby.len = strlen(DEFAULT_RUBY);
    }

passenger_main_conf.manifest = generate_config_manifest(cf, toplevel_plcf);
    manifest_cleanup = ngx_pool_cleanup_add(cf->pool, 0);
    manifest_cleanup->handler = (ngx_pool_cleanup_pt) psg_json_value_free;
    manifest_cleanup->data = passenger_main_conf.manifest;

if (passenger_main_conf.autogenerated.dump_config_manifest.len != 0) {
        dump_path = (char *) ngx_pnalloc(cf->temp_pool,
            passenger_main_conf.autogenerated.dump_config_manifest.len + 1);
        end = ngx_copy(dump_path,
            passenger_main_conf.autogenerated.dump_config_manifest.data,
            passenger_main_conf.autogenerated.dump_config_manifest.len);
        *end = '\0';

dump_file = fopen(dump_path, "w");
        if (dump_file != NULL) {
            dump_content = psg_json_value_to_styled_string(
                passenger_main_conf.manifest);
            ssize_t ret = fwrite(dump_content, 1, strlen(dump_content), dump_file);
            (void) ret; // Ignore compilation warning.
            fclose(dump_file);
            free(dump_content);
        } else {
            ngx_conf_log_error(NGX_LOG_ALERT, cf, 0,
                "Error dumping " PROGRAM_NAME " configuration manifest to %V",
                &passenger_main_conf.autogenerated.dump_config_manifest);
        }
    }

return NGX_OK;
}

static int
string_keyval_has_key(ngx_array_t *table, ngx_str_t *key)
{
    ngx_keyval_t  *elems;
    ngx_uint_t     i;

elems = (ngx_keyval_t *) table->elts;
    for (i = 0; i < table->nelts; i++) {
        if (elems[i].key.len == key->len
         && memcmp(elems[i].key.data, key->data, key->len) == 0)
        {
            return 1;
        }
    }

return 0;
}

static ngx_int_t
merge_string_keyval_table(ngx_conf_t *cf, ngx_array_t **prev, ngx_array_t **conf)
{
    ngx_keyval_t  *prev_elems, *elem;
    ngx_uint_t     i;

if (*prev != NULL) {
        if (*conf == NULL) {
            *conf = ngx_array_create(cf->pool, 4, sizeof(ngx_keyval_t));
            if (*conf == NULL) {
                return NGX_ERROR;
            }
        }

prev_elems = (ngx_keyval_t *) (*prev)->elts;
        for (i = 0; i < (*prev)->nelts; i++) {
            if (!string_keyval_has_key(*conf, &prev_elems[i].key)) {
                elem = (ngx_keyval_t *) ngx_array_push(*conf);
                if (elem == NULL) {
                    return NGX_ERROR;
                }
                *elem = prev_elems[i];
            }
        }
    }

return NGX_OK;
}

#ifndef PASSENGER_IS_ENTERPRISE
static char *
passenger_enterprise_only(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) {
    return ": this feature is only available in Phusion Passenger Enterprise. "
        "You are currently running the open source Phusion Passenger. "
        "Please learn more about and/or buy Phusion Passenger Enterprise at https://www.phusionpassenger.com/features#premium-features ;";
}
#endif

static char *
passenger_enabled(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
    passenger_loc_conf_t        *passenger_conf = conf;
    ngx_http_core_loc_conf_t    *clcf;
    ngx_str_t                   *value;
    ngx_url_t                    upstream_url;

passenger_conf->autogenerated.enabled_explicitly_set = 1;
    record_loc_conf_source_location(cf, passenger_conf,
        &passenger_conf->autogenerated.enabled_source_file,
        &passenger_conf->autogenerated.enabled_source_line);

value = cf->args->elts;
    if (ngx_strcasecmp(value[1].data, (u_char *) "on") == 0) {
        passenger_conf->autogenerated.enabled = 1;

/* Register a placeholder value as upstream address. The real upstream
         * address (the Passenger core socket filename) will be set while processing
         * requests, because we can't start the watchdog (and thus the Passenger core)
         * until config loading is done.
         */
        ngx_memzero(&upstream_url, sizeof(ngx_url_t));
        upstream_url.url = pp_placeholder_upstream_address;
        upstream_url.no_resolve = 1;
        passenger_conf->upstream_config.upstream = ngx_http_upstream_add(cf, &upstream_url, 0);
        if (passenger_conf->upstream_config.upstream == NULL) {
            return NGX_CONF_ERROR;
        }

clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
        clcf->handler = passenger_content_handler;

if (clcf->name.data != NULL
         && clcf->name.data[clcf->name.len - 1] == '/') {
            clcf->auto_redirect = 1;
        }
    } else if (ngx_strcasecmp(value[1].data, (u_char *) "off") == 0) {
        passenger_conf->autogenerated.enabled = 0;
    } else {
        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
            "\"passenger_enabled\" must be either set to \"on\" "
            "or \"off\"");

return NGX_CONF_ERROR;
    }

return NGX_CONF_OK;
}

static char *
passenger_conf_set_request_buffering(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) {
    #ifdef NGINX_NO_SEND_REQUEST_BODY_INFINITE_LOOP_BUG
        passenger_loc_conf_t *passenger_conf = conf;

passenger_conf->autogenerated.upstream_config_request_buffering_explicitly_set = 1;
        record_loc_conf_source_location(cf, passenger_conf,
            &passenger_conf->autogenerated.upstream_config_request_buffering_source_file,
            &passenger_conf->autogenerated.upstream_config_request_buffering_source_line);

return ngx_conf_set_flag_slot(cf, cmd, conf);
    #else
        return "config cannot be set in Nginx < 1.15.3 due to this bug: https://trac.nginx.org/nginx/ticket/1618";
    #endif /* NGINX_NO_SEND_REQUEST_BODY_INFINITE_LOOP_BUG */
}

static char *
rails_framework_spawner_idle_time(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
    ngx_conf_log_error(NGX_LOG_ALERT, cf, 0, "The 'rails_framework_spawner_idle_time' "
        "directive is deprecated; please set 'passenger_max_preloader_idle_time' instead");
    return NGX_CONF_OK;
}

static char *
passenger_use_global_queue(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
    ngx_conf_log_error(NGX_LOG_ALERT, cf, 0, "The 'passenger_use_global_queue' "
        "directive is obsolete and doesn't do anything anymore. Global queuing "
        "is now always enabled. Please remove this configuration directive.");
    return NGX_CONF_OK;
}

static char *
passenger_obsolete_directive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
    ngx_conf_log_error(NGX_LOG_ALERT, cf, 0, "The '%V' directive is obsolete "
        "and doesn't do anything anymore.", &cmd->name);
    return NGX_CONF_OK;
}

PsgJsonValue *
psg_json_value_set_str_array(PsgJsonValue *doc, const char *name, ngx_array_t *ary) {
    PsgJsonValue *subdoc = psg_json_value_new_with_type(PSG_JSON_VALUE_TYPE_ARRAY);
    PsgJsonValue *elem, *result;
    ngx_str_t *values;
    ngx_uint_t i;

if (ary != NULL) {
        values = (ngx_str_t *) ary->elts;
        for (i = 0; i < ary->nelts; i++) {
            elem = psg_json_value_new_str(
                (const char *) values[i].data, values[i].len);
            psg_json_value_append_val(subdoc, elem);
            psg_json_value_free(elem);
        }
    }

result = psg_json_value_set_value(doc, name, -1, subdoc);
    psg_json_value_free(subdoc);

return result;
}

PsgJsonValue *
psg_json_value_set_str_keyval(PsgJsonValue *doc, const char *name, ngx_array_t *ary) {
    PsgJsonValue *subdoc = psg_json_value_new_with_type(PSG_JSON_VALUE_TYPE_OBJECT);
    PsgJsonValue *elem, *result;
    ngx_keyval_t *values;
    ngx_uint_t i;

if (ary != NULL) {
        values = (ngx_keyval_t *) ary->elts;
        for (i = 0; i < ary->nelts; i++) {
            elem = psg_json_value_new_str(
                (const char *) values[i].value.data, values[i].value.len);
            psg_json_value_set_value(subdoc,
                (const char *) values[i].key.data, values[i].key.len,
                elem);
            psg_json_value_free(elem);
        }
    }

result = psg_json_value_set_value(doc, name, -1, subdoc);
    psg_json_value_free(subdoc);

return result;
}

const ngx_command_t passenger_commands[] = {

#include "ConfigGeneral/AutoGeneratedDefinitions.c"

ngx_null_command
};

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