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File Name : StaticContentHandler.c

/*
 * Copyright (C) Igor Sysoev
 * 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 "StaticContentHandler.h"
#include "ngx_http_passenger_module.h"

static void
set_request_extension(ngx_http_request_t *r, ngx_str_t *filename) {
    u_char *tmp;

/* Scan filename from the right until we've found a slash or a dot. */
    tmp = filename->data + filename->len - 1;
    while (tmp >= filename->data && *tmp != '/' && *tmp != '.') {
        tmp--;
    }
    if (tmp >= filename->data && *tmp == '.') {
        /* We found a dot, and until now we haven't seen any slashes.
         * So we know that this is the filename's extension.
        */
        tmp++;
        r->exten.data = tmp;
        r->exten.len  = filename->len - (tmp - filename->data);
    }
}

ngx_int_t
passenger_static_content_handler(ngx_http_request_t *r, ngx_str_t *filename)
{
    u_char                    *last, *location;
    size_t                     len;
    ngx_int_t                  rc;
    ngx_uint_t                 level;
    ngx_log_t                 *log;
    ngx_buf_t                 *b;
    ngx_chain_t                out;
    ngx_open_file_info_t       of;
    ngx_http_core_loc_conf_t  *clcf;

if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
        return NGX_HTTP_NOT_ALLOWED;
    }

if (r->uri.data[r->uri.len - 1] == '/') {
        return NGX_DECLINED;
    }

log = r->connection->log;

ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
                   "http filename: \"%s\"", filename->data);

clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);

ngx_memzero(&of, sizeof(ngx_open_file_info_t));
    of.read_ahead = clcf->read_ahead;
    of.directio = clcf->directio;
    of.valid = clcf->open_file_cache_valid;
    of.min_uses = clcf->open_file_cache_min_uses;
    of.errors = clcf->open_file_cache_errors;
    of.events = clcf->open_file_cache_events;

if (ngx_open_cached_file(clcf->open_file_cache, filename, &of, r->pool)
        != NGX_OK)
    {
        switch (of.err) {

case 0:
            return NGX_HTTP_INTERNAL_SERVER_ERROR;

case NGX_ENOENT:
        case NGX_ENOTDIR:
        case NGX_ENAMETOOLONG:

level = NGX_LOG_ERR;
            rc = NGX_HTTP_NOT_FOUND;
            break;

case NGX_EACCES:

level = NGX_LOG_ERR;
            rc = NGX_HTTP_FORBIDDEN;
            break;

default:

level = NGX_LOG_CRIT;
            rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
            break;
        }

if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
            ngx_log_error(level, log, of.err,
                          ngx_open_file_n " \"%s\" failed", filename->data);
        }

return rc;
    }

r->root_tested = !r->error_page;

ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);

if (of.is_dir) {

ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");

r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
        if (r->headers_out.location == NULL) {
            return NGX_HTTP_INTERNAL_SERVER_ERROR;
        }

len = r->uri.len + 1;

if (!clcf->alias && clcf->root_lengths == NULL && r->args.len == 0) {
            location = filename->data + clcf->root.len;

} else {
            if (r->args.len) {
                len += r->args.len + 1;
            }

location = ngx_pnalloc(r->pool, len);
            if (location == NULL) {
                return NGX_HTTP_INTERNAL_SERVER_ERROR;
            }

last = ngx_copy(location, r->uri.data, r->uri.len);

*last = '/';

if (r->args.len) {
                *++last = '?';
                ngx_memcpy(++last, r->args.data, r->args.len);
            }
        }

/*
         * we do not need to set the r->headers_out.location->hash and
         * r->headers_out.location->key fields
         */

r->headers_out.location->value.len = len;
        r->headers_out.location->value.data = location;

return NGX_HTTP_MOVED_PERMANENTLY;
    }

#if !(NGX_WIN32) /* the not regular files are probably Unix specific */

if (!of.is_file) {
        ngx_log_error(NGX_LOG_CRIT, log, 0,
                      "\"%s\" is not a regular file", filename->data);

return NGX_HTTP_NOT_FOUND;
    }

#endif

if (r->method & NGX_HTTP_POST) {
        return NGX_HTTP_NOT_ALLOWED;
    }

rc = ngx_http_discard_request_body(r);

if (rc != NGX_OK) {
        return rc;
    }

log->action = "sending response to client";

r->headers_out.status = NGX_HTTP_OK;
    r->headers_out.content_length_n = of.size;
    r->headers_out.last_modified_time = of.mtime;

set_request_extension(r, filename);
    if (ngx_http_set_content_type(r) != NGX_OK) {
        return NGX_HTTP_INTERNAL_SERVER_ERROR;
    }

if (r != r->main && of.size == 0) {
        return ngx_http_send_header(r);
    }

r->allow_ranges = 1;

/* we need to allocate all before the header would be sent */

b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
    if (b == NULL) {
        return NGX_HTTP_INTERNAL_SERVER_ERROR;
    }

b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
    if (b->file == NULL) {
        return NGX_HTTP_INTERNAL_SERVER_ERROR;
    }

rc = ngx_http_send_header(r);

if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
        return rc;
    }

b->file_pos = 0;
    b->file_last = of.size;

b->in_file = b->file_last ? 1: 0;
    b->last_buf = (r == r->main) ? 1: 0;
    b->last_in_chain = 1;

b->file->fd = of.fd;
    b->file->name = *filename;
    b->file->log = log;
    b->file->directio = of.is_directio;

out.buf = b;
    out.next = NULL;

return ngx_http_output_filter(r, &out);
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-12-19 09:30:36
..	dir	-	root/root	0755	2025-12-19 09:30:36
ConfigGeneral	dir	-	root/root	0755	2025-12-19 09:30:36
LocationConfig	dir	-	root/root	0755	2025-12-19 09:30:36
MainConfig	dir	-	root/root	0755	2025-12-19 09:30:36
.clangd	text/plain	81 B	root/root	0644	2025-09-16 04:56:08
Configuration.c	text/x-c	43.68 KB	root/root	0644	2025-09-16 04:56:08
Configuration.h	text/x-c	3.42 KB	root/root	0644	2025-09-16 04:56:08
ContentHandler.c	text/x-c	59.58 KB	root/root	0644	2025-09-16 04:56:08
ContentHandler.h	text/x-c	2.24 KB	root/root	0644	2025-09-16 04:56:08
README.md	text/plain	369 B	root/root	0644	2025-09-16 04:56:08
StaticContentHandler.c	text/x-c	6.91 KB	root/root	0644	2025-09-16 04:56:08
StaticContentHandler.h	text/x-c	1.74 KB	root/root	0644	2025-09-16 04:56:08
config	text/plain	5.8 KB	root/root	0644	2025-09-16 04:56:08
ngx_http_passenger_module.c	text/x-c	22.79 KB	root/root	0644	2025-09-16 04:56:08
ngx_http_passenger_module.h	text/x-c	2.66 KB	root/root	0644	2025-09-16 04:56:08

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