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|
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#if 0
typedef struct {
ngx_buf_t *buf;
size_t size;
ngx_pool_t *pool;
size_t alloc_size;
ngx_chain_t **last_out;
} ngx_http_autoindex_ctx_t;
#endif
typedef struct {
ngx_str_t name;
size_t utf_len;
ngx_uint_t escape;
ngx_uint_t dir;
time_t mtime;
off_t size;
} ngx_http_autoindex_entry_t;
typedef struct {
ngx_flag_t enable;
ngx_flag_t localtime;
ngx_flag_t exact_size;
} ngx_http_autoindex_loc_conf_t;
#define NGX_HTTP_AUTOINDEX_NAME_LEN 50
static int ngx_libc_cdecl ngx_http_autoindex_cmp_entries(const void *one,
const void *two);
static ngx_int_t ngx_http_autoindex_error(ngx_http_request_t *r,
ngx_dir_t *dir, u_char *name);
static ngx_int_t ngx_http_autoindex_init(ngx_cycle_t *cycle);
static void *ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child);
static ngx_command_t ngx_http_autoindex_commands[] = {
{ ngx_string("autoindex"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_autoindex_loc_conf_t, enable),
NULL },
{ ngx_string("autoindex_localtime"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_autoindex_loc_conf_t, localtime),
NULL },
{ ngx_string("autoindex_exact_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_autoindex_loc_conf_t, exact_size),
NULL },
ngx_null_command
};
ngx_http_module_t ngx_http_autoindex_module_ctx = {
NULL, /* preconfiguration */
NULL, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_autoindex_create_loc_conf, /* create location configration */
ngx_http_autoindex_merge_loc_conf /* merge location configration */
};
ngx_module_t ngx_http_autoindex_module = {
NGX_MODULE_V1,
&ngx_http_autoindex_module_ctx, /* module context */
ngx_http_autoindex_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
ngx_http_autoindex_init, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static u_char title[] =
"<html>" CRLF
"<head><title>Index of "
;
static u_char header[] =
"</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<h1>Index of "
;
static u_char tail[] =
"</body>" CRLF
"</html>" CRLF
;
static ngx_int_t
ngx_http_autoindex_handler(ngx_http_request_t *r)
{
u_char *last, scale;
off_t length;
size_t len, copy;
ngx_tm_t tm;
ngx_int_t rc, size;
ngx_uint_t i, level;
ngx_err_t err;
ngx_buf_t *b;
ngx_chain_t out;
ngx_str_t dname, fname;
ngx_dir_t dir;
ngx_pool_t *pool;
ngx_array_t entries;
ngx_http_core_loc_conf_t *clcf;
ngx_http_autoindex_entry_t *entry;
ngx_http_autoindex_loc_conf_t *alcf;
static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
if (r->uri.data[r->uri.len - 1] != '/') {
return NGX_DECLINED;
}
/* TODO: Win32 */
if (r->zero_in_uri) {
return NGX_DECLINED;
}
alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
if (!alcf->enable) {
return NGX_DECLINED;
}
/* TODO: pool should be temporary pool */
pool = r->pool;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->alias) {
dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
+ NGX_DIR_MASK_LEN + 1
- clcf->name.len);
if (dname.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
last = ngx_cpystrn(last, r->uri.data + clcf->name.len,
r->uri.len - clcf->name.len + 1);
} else {
dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
+ NGX_DIR_MASK_LEN);
if (dname.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
last = ngx_cpystrn(last, r->uri.data, r->uri.len);
}
dname.len = last - dname.data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http autoindex: \"%s\"", dname.data);
if (ngx_open_dir(&dname, &dir) == NGX_ERROR) {
err = ngx_errno;
if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
} else if (err == NGX_EACCES) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
} else {
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_log_error(level, r->connection->log, err,
ngx_open_dir_n " \"%s\" failed", dname.data);
return rc;
}
#if (NGX_SUPPRESS_WARN)
/* MSVC thinks 'entries' may be used without having been initialized */
ngx_memzero(&entries, sizeof(ngx_array_t));
#endif
if (ngx_array_init(&entries, pool, 50, sizeof(ngx_http_autoindex_entry_t))
== NGX_ERROR)
{
return ngx_http_autoindex_error(r, &dir, dname.data);
}
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_type.len = sizeof("text/html") - 1;
r->headers_out.content_type.data = (u_char *) "text/html";
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
fname.len = 0;
#if (NGX_SUPPRESS_WARN)
fname.data = NULL;
#endif
for ( ;; ) {
ngx_set_errno(0);
if (ngx_read_dir(&dir) == NGX_ERROR) {
err = ngx_errno;
if (err != NGX_ENOMOREFILES) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_read_dir_n " \"%s\" failed", dname.data);
return ngx_http_autoindex_error(r, &dir, dname.data);
}
break;
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http autoindex file: \"%s\"", ngx_de_name(&dir));
len = ngx_de_namelen(&dir);
if (len == 1 && ngx_de_name(&dir)[0] == '.') {
continue;
}
if (len == 2
&& ngx_de_name(&dir)[0] == '.'
&& ngx_de_name(&dir)[1] == '.')
{
continue;
}
if (!dir.valid_info) {
if (dname.len + 1 + len > fname.len) {
fname.len = dname.len + 1 + len + 32;
fname.data = ngx_palloc(pool, fname.len);
if (fname.data == NULL) {
return ngx_http_autoindex_error(r, &dir, dname.data);
}
last = ngx_cpystrn(fname.data, dname.data,
dname.len + 1);
*last++ = '/';
}
ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
if (ngx_de_info(fname.data, &dir) == NGX_FILE_ERROR) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_de_info_n " \"%s\" failed", fname.data);
return ngx_http_autoindex_error(r, &dir, dname.data);
}
if (ngx_de_link_info(fname.data, &dir) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_de_link_info_n " \"%s\" failed",
fname.data);
return ngx_http_autoindex_error(r, &dir, dname.data);
}
}
}
entry = ngx_array_push(&entries);
if (entry == NULL) {
return ngx_http_autoindex_error(r, &dir, dname.data);
}
entry->name.len = len;
entry->name.data = ngx_palloc(pool, len + 1);
if (entry->name.data == NULL) {
return ngx_http_autoindex_error(r, &dir, dname.data);
}
ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
entry->escape = 2 * ngx_escape_uri(NULL, ngx_de_name(&dir), len,
NGX_ESCAPE_HTML);
if (r->utf8) {
entry->utf_len = ngx_utf_length(&entry->name);
} else {
entry->utf_len = len;
}
entry->dir = ngx_de_is_dir(&dir);
entry->mtime = ngx_de_mtime(&dir);
entry->size = ngx_de_size(&dir);
}
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", dname.data);
}
len = sizeof(title) - 1
+ r->uri.len
+ sizeof(header) - 1
+ r->uri.len
+ sizeof("</h1>") - 1
+ sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1
+ sizeof("</pre><hr>") - 1
+ sizeof(tail) - 1;
entry = entries.elts;
for (i = 0; i < entries.nelts; i++) {
len += sizeof("<a href=\"") - 1
+ entry[i].name.len + entry[i].escape
+ 1 /* 1 is for "/" */
+ sizeof("\">") - 1
+ entry[i].name.len - entry[i].utf_len
+ NGX_HTTP_AUTOINDEX_NAME_LEN + sizeof(">") - 2
+ sizeof("</a>") - 1
+ sizeof(" 28-Sep-1970 12:00 ") - 1
+ 20 /* the file size */
+ 2;
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (entries.nelts > 1) {
ngx_qsort(entry, (size_t) entries.nelts,
sizeof(ngx_http_autoindex_entry_t),
ngx_http_autoindex_cmp_entries);
}
b->last = ngx_cpymem(b->last, title, sizeof(title) - 1);
b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
b->last = ngx_cpymem(b->last, header, sizeof(header) - 1);
b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
b->last = ngx_cpymem(b->last, "</h1>", sizeof("</h1>") - 1);
b->last = ngx_cpymem(b->last, "<hr><pre><a href=\"../\">../</a>" CRLF,
sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1);
for (i = 0; i < entries.nelts; i++) {
b->last = ngx_cpymem(b->last, "<a href=\"", sizeof("<a href=\"") - 1);
if (entry[i].escape) {
ngx_escape_uri(b->last, entry[i].name.data, entry[i].name.len,
NGX_ESCAPE_HTML);
b->last += entry[i].name.len + entry[i].escape;
} else {
b->last = ngx_cpymem(b->last, entry[i].name.data,
entry[i].name.len);
}
if (entry[i].dir) {
*b->last++ = '/';
}
*b->last++ = '"';
*b->last++ = '>';
len = entry[i].utf_len;
if (entry[i].name.len - len) {
if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
copy = NGX_HTTP_AUTOINDEX_NAME_LEN - 3 + 1;
} else {
copy = NGX_HTTP_AUTOINDEX_NAME_LEN + 1;
}
b->last = ngx_utf_cpystrn(b->last, entry[i].name.data, copy);
last = b->last;
} else {
b->last = ngx_cpystrn(b->last, entry[i].name.data,
NGX_HTTP_AUTOINDEX_NAME_LEN + 1);
last = b->last - 3;
}
if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
b->last = ngx_cpymem(last, "..></a>", sizeof("..></a>") - 1);
} else {
if (entry[i].dir && NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
*b->last++ = '/';
len++;
}
b->last = ngx_cpymem(b->last, "</a>", sizeof("</a>") - 1);
ngx_memset(b->last, ' ', NGX_HTTP_AUTOINDEX_NAME_LEN - len);
b->last += NGX_HTTP_AUTOINDEX_NAME_LEN - len;
}
*b->last++ = ' ';
ngx_gmtime(entry[i].mtime + ngx_gmtoff * 60 * alcf->localtime, &tm);
b->last = ngx_sprintf(b->last, "%02d-%s-%d %02d:%02d ",
tm.ngx_tm_mday,
months[tm.ngx_tm_mon - 1],
tm.ngx_tm_year,
tm.ngx_tm_hour,
tm.ngx_tm_min);
if (alcf->exact_size) {
if (entry[i].dir) {
b->last = ngx_cpymem(b->last, " -",
sizeof(" -") - 1);
} else {
b->last = ngx_sprintf(b->last, "%19O", entry[i].size);
}
} else {
if (entry[i].dir) {
b->last = ngx_cpymem(b->last, " -", sizeof(" -") - 1);
} else {
length = entry[i].size;
if (length > 1024 * 1024 * 1024 - 1) {
size = (ngx_int_t) (length / (1024 * 1024 * 1024));
if ((length % (1024 * 1024 * 1024))
> (1024 * 1024 * 1024 / 2 - 1))
{
size++;
}
scale = 'G';
} else if (length > 1024 * 1024 - 1) {
size = (ngx_int_t) (length / (1024 * 1024));
if ((length % (1024 * 1024)) > (1024 * 1024 / 2 - 1)) {
size++;
}
scale = 'M';
} else if (length > 9999) {
size = (ngx_int_t) (length / 1024);
if (length % 1024 > 511) {
size++;
}
scale = 'K';
} else {
size = (ngx_int_t) length;
scale = ' ';
}
b->last = ngx_sprintf(b->last, "%6i", size);
if (scale != ' ') {
*b->last++ = scale;
}
}
}
*b->last++ = CR;
*b->last++ = LF;
}
/* TODO: free temporary pool */
b->last = ngx_cpymem(b->last, "</pre><hr>", sizeof("</pre><hr>") - 1);
b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
if (r->main == NULL) {
b->last_buf = 1;
}
b->last_in_chain = 1;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
static int ngx_libc_cdecl
ngx_http_autoindex_cmp_entries(const void *one, const void *two)
{
ngx_http_autoindex_entry_t *first = (ngx_http_autoindex_entry_t *) one;
ngx_http_autoindex_entry_t *second = (ngx_http_autoindex_entry_t *) two;
if (first->dir && !second->dir) {
/* move the directories to the start */
return -1;
}
if (!first->dir && second->dir) {
/* move the directories to the start */
return 1;
}
return (int) ngx_strcmp(first->name.data, second->name.data);
}
#if 0
static ngx_buf_t *
ngx_http_autoindex_alloc(ngx_http_autoindex_ctx_t *ctx, size_t size)
{
ngx_chain_t *cl;
if (ctx->buf) {
if ((size_t) (ctx->buf->end - ctx->buf->last) >= size) {
return ctx->buf;
}
ctx->size += ctx->buf->last - ctx->buf->pos;
}
ctx->buf = ngx_create_temp_buf(ctx->pool, ctx->alloc_size);
if (ctx->buf == NULL) {
return NULL;
}
cl = ngx_alloc_chain_link(ctx->pool);
if (cl == NULL) {
return NULL;
}
cl->buf = ctx->buf;
cl->next = NULL;
*ctx->last_out = cl;
ctx->last_out = &cl->next;
return ctx->buf;
}
#endif
static ngx_int_t
ngx_http_autoindex_error(ngx_http_request_t *r, ngx_dir_t *dir, u_char *name)
{
if (ngx_close_dir(dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", name);
}
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
static ngx_int_t
ngx_http_autoindex_init(ngx_cycle_t *cycle)
{
ngx_http_handler_pt *h;
ngx_http_core_main_conf_t *cmcf;
cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
if (h == NULL) {
return NGX_ERROR;
}
*h = ngx_http_autoindex_handler;
return NGX_OK;
}
static void *
ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_autoindex_loc_conf_t *conf;
conf = ngx_palloc(cf->pool, sizeof(ngx_http_autoindex_loc_conf_t));
if (conf == NULL) {
return NGX_CONF_ERROR;
}
conf->enable = NGX_CONF_UNSET;
conf->localtime = NGX_CONF_UNSET;
conf->exact_size = NGX_CONF_UNSET;
return conf;
}
static char *
ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_autoindex_loc_conf_t *prev = parent;
ngx_http_autoindex_loc_conf_t *conf = child;
ngx_conf_merge_value(conf->enable, prev->enable, 0);
ngx_conf_merge_value(conf->localtime, prev->localtime, 0);
ngx_conf_merge_value(conf->exact_size, prev->exact_size, 1);
return NGX_CONF_OK;
}
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