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ngx_http_autoindex_module.c
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ngx_http_autoindex_module.c
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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#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;
size_t escape;
size_t escape_html;
unsigned dir:1;
unsigned file:1;
time_t mtime;
off_t size;
} ngx_http_autoindex_entry_t;
typedef struct {
ngx_flag_t enable;
ngx_uint_t format;
ngx_flag_t localtime;
ngx_flag_t exact_size;
} ngx_http_autoindex_loc_conf_t;
#define NGX_HTTP_AUTOINDEX_HTML 0
#define NGX_HTTP_AUTOINDEX_JSON 1
#define NGX_HTTP_AUTOINDEX_JSONP 2
#define NGX_HTTP_AUTOINDEX_XML 3
#define NGX_HTTP_AUTOINDEX_PREALLOCATE 50
#define NGX_HTTP_AUTOINDEX_NAME_LEN 50
static ngx_buf_t *ngx_http_autoindex_html(ngx_http_request_t *r,
ngx_array_t *entries);
static ngx_buf_t *ngx_http_autoindex_json(ngx_http_request_t *r,
ngx_array_t *entries, ngx_str_t *callback);
static ngx_int_t ngx_http_autoindex_jsonp_callback(ngx_http_request_t *r,
ngx_str_t *callback);
static ngx_buf_t *ngx_http_autoindex_xml(ngx_http_request_t *r,
ngx_array_t *entries);
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, ngx_str_t *name);
static ngx_int_t ngx_http_autoindex_init(ngx_conf_t *cf);
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_conf_enum_t ngx_http_autoindex_format[] = {
{ ngx_string("html"), NGX_HTTP_AUTOINDEX_HTML },
{ ngx_string("json"), NGX_HTTP_AUTOINDEX_JSON },
{ ngx_string("jsonp"), NGX_HTTP_AUTOINDEX_JSONP },
{ ngx_string("xml"), NGX_HTTP_AUTOINDEX_XML },
{ ngx_null_string, 0 }
};
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_format"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_enum_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_autoindex_loc_conf_t, format),
&ngx_http_autoindex_format },
{ 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
};
static ngx_http_module_t ngx_http_autoindex_module_ctx = {
NULL, /* preconfiguration */
ngx_http_autoindex_init, /* 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 configuration */
ngx_http_autoindex_merge_loc_conf /* merge location configuration */
};
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 */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static ngx_int_t
ngx_http_autoindex_handler(ngx_http_request_t *r)
{
u_char *last, *filename;
size_t len, allocated, root;
ngx_err_t err;
ngx_buf_t *b;
ngx_int_t rc;
ngx_str_t path, callback;
ngx_dir_t dir;
ngx_uint_t level, format;
ngx_pool_t *pool;
ngx_chain_t out;
ngx_array_t entries;
ngx_http_autoindex_entry_t *entry;
ngx_http_autoindex_loc_conf_t *alcf;
if (r->uri.data[r->uri.len - 1] != '/') {
return NGX_DECLINED;
}
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
return NGX_DECLINED;
}
alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
if (!alcf->enable) {
return NGX_DECLINED;
}
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
last = ngx_http_map_uri_to_path(r, &path, &root,
NGX_HTTP_AUTOINDEX_PREALLOCATE);
if (last == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
allocated = path.len;
path.len = last - path.data;
if (path.len > 1) {
path.len--;
}
path.data[path.len] = '\0';
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http autoindex: \"%s\"", path.data);
format = alcf->format;
if (format == NGX_HTTP_AUTOINDEX_JSONP) {
if (ngx_http_autoindex_jsonp_callback(r, &callback) != NGX_OK) {
return NGX_HTTP_BAD_REQUEST;
}
if (callback.len == 0) {
format = NGX_HTTP_AUTOINDEX_JSON;
}
}
if (ngx_open_dir(&path, &dir) == NGX_ERROR) {
err = ngx_errno;
if (err == NGX_ENOENT
|| err == NGX_ENOTDIR
|| err == NGX_ENAMETOOLONG)
{
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", path.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
/* TODO: pool should be temporary pool */
pool = r->pool;
if (ngx_array_init(&entries, pool, 40, sizeof(ngx_http_autoindex_entry_t))
!= NGX_OK)
{
return ngx_http_autoindex_error(r, &dir, &path);
}
r->headers_out.status = NGX_HTTP_OK;
switch (format) {
case NGX_HTTP_AUTOINDEX_JSON:
ngx_str_set(&r->headers_out.content_type, "application/json");
break;
case NGX_HTTP_AUTOINDEX_JSONP:
ngx_str_set(&r->headers_out.content_type, "application/javascript");
break;
case NGX_HTTP_AUTOINDEX_XML:
ngx_str_set(&r->headers_out.content_type, "text/xml");
ngx_str_set(&r->headers_out.charset, "utf-8");
break;
default: /* NGX_HTTP_AUTOINDEX_HTML */
ngx_str_set(&r->headers_out.content_type, "text/html");
break;
}
r->headers_out.content_type_len = r->headers_out.content_type.len;
r->headers_out.content_type_lowcase = NULL;
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%V\" failed", &path);
}
return rc;
}
filename = path.data;
filename[path.len] = '/';
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 " \"%V\" failed", &path);
return ngx_http_autoindex_error(r, &dir, &path);
}
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 (ngx_de_name(&dir)[0] == '.') {
continue;
}
if (!dir.valid_info) {
/* 1 byte for '/' and 1 byte for terminating '\0' */
if (path.len + 1 + len + 1 > allocated) {
allocated = path.len + 1 + len + 1
+ NGX_HTTP_AUTOINDEX_PREALLOCATE;
filename = ngx_pnalloc(pool, allocated);
if (filename == NULL) {
return ngx_http_autoindex_error(r, &dir, &path);
}
last = ngx_cpystrn(filename, path.data, path.len + 1);
*last++ = '/';
}
ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
if (ngx_de_info(filename, &dir) == NGX_FILE_ERROR) {
err = ngx_errno;
if (err != NGX_ENOENT && err != NGX_ELOOP) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_de_info_n " \"%s\" failed", filename);
if (err == NGX_EACCES) {
continue;
}
return ngx_http_autoindex_error(r, &dir, &path);
}
if (ngx_de_link_info(filename, &dir) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_de_link_info_n " \"%s\" failed",
filename);
return ngx_http_autoindex_error(r, &dir, &path);
}
}
}
entry = ngx_array_push(&entries);
if (entry == NULL) {
return ngx_http_autoindex_error(r, &dir, &path);
}
entry->name.len = len;
entry->name.data = ngx_pnalloc(pool, len + 1);
if (entry->name.data == NULL) {
return ngx_http_autoindex_error(r, &dir, &path);
}
ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
entry->dir = ngx_de_is_dir(&dir);
entry->file = ngx_de_is_file(&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 " \"%V\" failed", &path);
}
if (entries.nelts > 1) {
ngx_qsort(entries.elts, (size_t) entries.nelts,
sizeof(ngx_http_autoindex_entry_t),
ngx_http_autoindex_cmp_entries);
}
switch (format) {
case NGX_HTTP_AUTOINDEX_JSON:
b = ngx_http_autoindex_json(r, &entries, NULL);
break;
case NGX_HTTP_AUTOINDEX_JSONP:
b = ngx_http_autoindex_json(r, &entries, &callback);
break;
case NGX_HTTP_AUTOINDEX_XML:
b = ngx_http_autoindex_xml(r, &entries);
break;
default: /* NGX_HTTP_AUTOINDEX_HTML */
b = ngx_http_autoindex_html(r, &entries);
break;
}
if (b == NULL) {
return NGX_ERROR;
}
/* TODO: free temporary pool */
if (r == r->main) {
b->last_buf = 1;
}
b->last_in_chain = 1;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
static ngx_buf_t *
ngx_http_autoindex_html(ngx_http_request_t *r, ngx_array_t *entries)
{
u_char *last, scale;
off_t length;
size_t len, entry_len, char_len, escape_html;
ngx_tm_t tm;
ngx_buf_t *b;
ngx_int_t size;
ngx_uint_t i, utf8;
ngx_time_t *tp;
ngx_http_autoindex_entry_t *entry;
ngx_http_autoindex_loc_conf_t *alcf;
static u_char title[] =
"<html>" CRLF
"<head><title>Index of "
;
static u_char header[] =
"</title></head>" CRLF
"<body>" CRLF
"<h1>Index of "
;
static u_char tail[] =
"</body>" CRLF
"</html>" CRLF
;
static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
if (r->headers_out.charset.len == 5
&& ngx_strncasecmp(r->headers_out.charset.data, (u_char *) "utf-8", 5)
== 0)
{
utf8 = 1;
} else {
utf8 = 0;
}
escape_html = ngx_escape_html(NULL, r->uri.data, r->uri.len);
len = sizeof(title) - 1
+ r->uri.len + escape_html
+ sizeof(header) - 1
+ r->uri.len + escape_html
+ 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++) {
entry[i].escape = 2 * ngx_escape_uri(NULL, entry[i].name.data,
entry[i].name.len,
NGX_ESCAPE_URI_COMPONENT);
entry[i].escape_html = ngx_escape_html(NULL, entry[i].name.data,
entry[i].name.len);
if (utf8) {
entry[i].utf_len = ngx_utf8_length(entry[i].name.data,
entry[i].name.len);
} else {
entry[i].utf_len = entry[i].name.len;
}
entry_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
+ entry[i].escape_html
+ NGX_HTTP_AUTOINDEX_NAME_LEN + sizeof(">") - 2
+ sizeof("</a>") - 1
+ sizeof(" 28-Sep-1970 12:00 ") - 1
+ 20 /* the file size */
+ 2;
if (len > NGX_MAX_SIZE_T_VALUE - entry_len) {
return NULL;
}
len += entry_len;
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NULL;
}
b->last = ngx_cpymem(b->last, title, sizeof(title) - 1);
if (escape_html) {
b->last = (u_char *) ngx_escape_html(b->last, r->uri.data, r->uri.len);
b->last = ngx_cpymem(b->last, header, sizeof(header) - 1);
b->last = (u_char *) ngx_escape_html(b->last, r->uri.data, r->uri.len);
} else {
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);
alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
tp = ngx_timeofday();
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_URI_COMPONENT);
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) {
char_len = NGX_HTTP_AUTOINDEX_NAME_LEN - 3 + 1;
} else {
char_len = NGX_HTTP_AUTOINDEX_NAME_LEN + 1;
}
last = b->last;
b->last = ngx_utf8_cpystrn(b->last, entry[i].name.data,
char_len, entry[i].name.len + 1);
if (entry[i].escape_html) {
b->last = (u_char *) ngx_escape_html(last, entry[i].name.data,
b->last - last);
}
last = b->last;
} else {
if (entry[i].escape_html) {
if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
char_len = NGX_HTTP_AUTOINDEX_NAME_LEN - 3;
} else {
char_len = len;
}
b->last = (u_char *) ngx_escape_html(b->last,
entry[i].name.data, char_len);
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);
if (NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
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 + tp->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 = '\0';
}
if (scale) {
b->last = ngx_sprintf(b->last, "%6i%c", size, scale);
} else {
b->last = ngx_sprintf(b->last, " %6i", size);
}
}
}
*b->last++ = CR;
*b->last++ = LF;
}
b->last = ngx_cpymem(b->last, "</pre><hr>", sizeof("</pre><hr>") - 1);
b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
return b;
}
static ngx_buf_t *
ngx_http_autoindex_json(ngx_http_request_t *r, ngx_array_t *entries,
ngx_str_t *callback)
{
size_t len, entry_len;
ngx_buf_t *b;
ngx_uint_t i;
ngx_http_autoindex_entry_t *entry;
len = sizeof("[" CRLF CRLF "]") - 1;
if (callback) {
len += sizeof("/* callback */" CRLF "();") - 1 + callback->len;
}
entry = entries->elts;
for (i = 0; i < entries->nelts; i++) {
entry[i].escape = ngx_escape_json(NULL, entry[i].name.data,
entry[i].name.len);
entry_len = sizeof("{ }," CRLF) - 1
+ sizeof("\"name\":\"\"") - 1
+ entry[i].name.len + entry[i].escape
+ sizeof(", \"type\":\"directory\"") - 1
+ sizeof(", \"mtime\":\"Wed, 31 Dec 1986 10:00:00 GMT\"") - 1;
if (entry[i].file) {
entry_len += sizeof(", \"size\":") - 1 + NGX_OFF_T_LEN;
}
if (len > NGX_MAX_SIZE_T_VALUE - entry_len) {
return NULL;
}
len += entry_len;
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NULL;
}
if (callback) {
b->last = ngx_cpymem(b->last, "/* callback */" CRLF,
sizeof("/* callback */" CRLF) - 1);
b->last = ngx_cpymem(b->last, callback->data, callback->len);
*b->last++ = '(';
}
*b->last++ = '[';
for (i = 0; i < entries->nelts; i++) {
b->last = ngx_cpymem(b->last, CRLF "{ \"name\":\"",
sizeof(CRLF "{ \"name\":\"") - 1);
if (entry[i].escape) {
b->last = (u_char *) ngx_escape_json(b->last, entry[i].name.data,
entry[i].name.len);
} else {
b->last = ngx_cpymem(b->last, entry[i].name.data,
entry[i].name.len);
}
b->last = ngx_cpymem(b->last, "\", \"type\":\"",
sizeof("\", \"type\":\"") - 1);
if (entry[i].dir) {
b->last = ngx_cpymem(b->last, "directory", sizeof("directory") - 1);
} else if (entry[i].file) {
b->last = ngx_cpymem(b->last, "file", sizeof("file") - 1);
} else {
b->last = ngx_cpymem(b->last, "other", sizeof("other") - 1);
}
b->last = ngx_cpymem(b->last, "\", \"mtime\":\"",
sizeof("\", \"mtime\":\"") - 1);
b->last = ngx_http_time(b->last, entry[i].mtime);
if (entry[i].file) {
b->last = ngx_cpymem(b->last, "\", \"size\":",
sizeof("\", \"size\":") - 1);
b->last = ngx_sprintf(b->last, "%O", entry[i].size);
} else {
*b->last++ = '"';
}
b->last = ngx_cpymem(b->last, " },", sizeof(" },") - 1);
}
if (i > 0) {
b->last--; /* strip last comma */
}
b->last = ngx_cpymem(b->last, CRLF "]", sizeof(CRLF "]") - 1);
if (callback) {
*b->last++ = ')'; *b->last++ = ';';
}
return b;
}
static ngx_int_t
ngx_http_autoindex_jsonp_callback(ngx_http_request_t *r, ngx_str_t *callback)
{
u_char *p, c, ch;
ngx_uint_t i;
if (ngx_http_arg(r, (u_char *) "callback", 8, callback) != NGX_OK) {
callback->len = 0;
return NGX_OK;
}
if (callback->len > 128) {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"client sent too long callback name: \"%V\"", callback);
return NGX_DECLINED;
}
p = callback->data;
for (i = 0; i < callback->len; i++) {
ch = p[i];
c = (u_char) (ch | 0x20);
if (c >= 'a' && c <= 'z') {
continue;
}
if ((ch >= '0' && ch <= '9') || ch == '_' || ch == '.') {
continue;
}
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"client sent invalid callback name: \"%V\"", callback);
return NGX_DECLINED;
}
return NGX_OK;
}
static ngx_buf_t *
ngx_http_autoindex_xml(ngx_http_request_t *r, ngx_array_t *entries)
{
size_t len, entry_len;
ngx_tm_t tm;
ngx_buf_t *b;
ngx_str_t type;
ngx_uint_t i;
ngx_http_autoindex_entry_t *entry;
static u_char head[] = "<?xml version=\"1.0\"?>" CRLF "<list>" CRLF;
static u_char tail[] = "</list>" CRLF;
len = sizeof(head) - 1 + sizeof(tail) - 1;
entry = entries->elts;
for (i = 0; i < entries->nelts; i++) {
entry[i].escape = ngx_escape_html(NULL, entry[i].name.data,
entry[i].name.len);
entry_len = sizeof("<directory></directory>" CRLF) - 1
+ entry[i].name.len + entry[i].escape
+ sizeof(" mtime=\"1986-12-31T10:00:00Z\"") - 1;
if (entry[i].file) {
entry_len += sizeof(" size=\"\"") - 1 + NGX_OFF_T_LEN;
}
if (len > NGX_MAX_SIZE_T_VALUE - entry_len) {
return NULL;
}
len += entry_len;
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NULL;
}
b->last = ngx_cpymem(b->last, head, sizeof(head) - 1);
for (i = 0; i < entries->nelts; i++) {
*b->last++ = '<';
if (entry[i].dir) {
ngx_str_set(&type, "directory");
} else if (entry[i].file) {
ngx_str_set(&type, "file");
} else {
ngx_str_set(&type, "other");
}
b->last = ngx_cpymem(b->last, type.data, type.len);
b->last = ngx_cpymem(b->last, " mtime=\"", sizeof(" mtime=\"") - 1);
ngx_gmtime(entry[i].mtime, &tm);
b->last = ngx_sprintf(b->last, "%4d-%02d-%02dT%02d:%02d:%02dZ",
tm.ngx_tm_year, tm.ngx_tm_mon,
tm.ngx_tm_mday, tm.ngx_tm_hour,
tm.ngx_tm_min, tm.ngx_tm_sec);
if (entry[i].file) {
b->last = ngx_cpymem(b->last, "\" size=\"",
sizeof("\" size=\"") - 1);
b->last = ngx_sprintf(b->last, "%O", entry[i].size);
}
*b->last++ = '"'; *b->last++ = '>';
if (entry[i].escape) {
b->last = (u_char *) ngx_escape_html(b->last, entry[i].name.data,
entry[i].name.len);
} else {
b->last = ngx_cpymem(b->last, entry[i].name.data,
entry[i].name.len);
}
*b->last++ = '<'; *b->last++ = '/';
b->last = ngx_cpymem(b->last, type.data, type.len);
*b->last++ = '>';
*b->last++ = CR; *b->last++ = LF;
}
b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
return b;
}
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;