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ngx_http_fancyindex_module.c
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/*
* ngx_http_fancyindex_module.c
* Copyright © 2007-2016 Adrian Perez <[email protected]>
*
* Module used for fancy indexing of directories. Features and differences
* with the stock nginx autoindex module:
*
* - Output is a table instead of a <pre> element with embedded <a> links.
* - Header and footer may be added to every generated directory listing.
* - Default header and/or footer are generated if custom ones are not
* configured. Files used for header and footer can only be local path
* names (i.e. you cannot insert the result of a subrequest.)
* - Proper HTML is generated: it should validate both as XHTML 1.0 Strict
* and HTML 4.01.
*
* Base functionality heavy based upon the stock nginx autoindex module,
* which in turn was made by Igor Sysoev, like the majority of nginx.
*
* Distributed under terms of the BSD license.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <ngx_log.h>
#include "template.h"
#if defined(__GNUC__) && (__GNUC__ >= 3)
# define ngx_force_inline __attribute__((__always_inline__))
#else /* !__GNUC__ */
# define ngx_force_inline
#endif /* __GNUC__ */
static const char *short_weekday[] = {
"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun",
};
static const char *long_weekday[] = {
"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Sunday",
};
static const char *short_month[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
};
static const char *long_month[] = {
"January", "February", "March", "April", "May", "June", "July",
"August", "September", "October", "November", "December",
};
#define DATETIME_FORMATS(F_, t) \
F_ ('a', 3, "%3s", short_weekday[((t)->ngx_tm_wday + 6) % 7]) \
F_ ('A', 9, "%s", long_weekday [((t)->ngx_tm_wday + 6) % 7]) \
F_ ('b', 3, "%3s", short_month[(t)->ngx_tm_mon - 1] ) \
F_ ('B', 9, "%s", long_month [(t)->ngx_tm_mon - 1] ) \
F_ ('d', 2, "%02d", (t)->ngx_tm_mday ) \
F_ ('e', 2, "%2d", (t)->ngx_tm_mday ) \
F_ ('F', 10, "%d-%02d-%02d", \
(t)->ngx_tm_year, \
(t)->ngx_tm_mon, \
(t)->ngx_tm_mday ) \
F_ ('H', 2, "%02d", (t)->ngx_tm_hour ) \
F_ ('I', 2, "%02d", ((t)->ngx_tm_hour % 12) + 1 ) \
F_ ('k', 2, "%2d", (t)->ngx_tm_hour ) \
F_ ('l', 2, "%2d", ((t)->ngx_tm_hour % 12) + 1 ) \
F_ ('m', 2, "%02d", (t)->ngx_tm_mon ) \
F_ ('M', 2, "%02d", (t)->ngx_tm_min ) \
F_ ('p', 2, "%2s", (((t)->ngx_tm_hour < 12) ? "AM" : "PM") ) \
F_ ('P', 2, "%2s", (((t)->ngx_tm_hour < 12) ? "am" : "pm") ) \
F_ ('r', 11, "%02d:%02d:%02d %2s", \
((t)->ngx_tm_hour % 12) + 1, \
(t)->ngx_tm_min, \
(t)->ngx_tm_sec, \
(((t)->ngx_tm_hour < 12) ? "AM" : "PM") ) \
F_ ('R', 5, "%02d:%02d", (t)->ngx_tm_hour, (t)->ngx_tm_min ) \
F_ ('S', 2, "%02d", (t)->ngx_tm_sec ) \
F_ ('T', 8, "%02d:%02d:%02d", \
(t)->ngx_tm_hour, \
(t)->ngx_tm_min, \
(t)->ngx_tm_sec ) \
F_ ('u', 1, "%1d", (((t)->ngx_tm_wday + 6) % 7) + 1 ) \
F_ ('w', 1, "%1d", ((t)->ngx_tm_wday + 6) % 7 ) \
F_ ('y', 2, "%02d", (t)->ngx_tm_year % 100 ) \
F_ ('Y', 4, "%04d", (t)->ngx_tm_year )
static size_t
ngx_fancyindex_timefmt_calc_size (const ngx_str_t *fmt)
{
#define DATETIME_CASE(letter, fmtlen, fmt, ...) \
case letter: result += (fmtlen); break;
size_t i, result = 0;
for (i = 0; i < fmt->len; i++) {
if (fmt->data[i] == '%') {
if (++i >= fmt->len) {
result++;
break;
}
switch (fmt->data[i]) {
DATETIME_FORMATS(DATETIME_CASE,)
default:
result++;
}
} else {
result++;
}
}
return result;
#undef DATETIME_CASE
}
static u_char*
ngx_fancyindex_timefmt (u_char *buffer, const ngx_str_t *fmt, const ngx_tm_t *tm)
{
#define DATETIME_CASE(letter, fmtlen, fmt, ...) \
case letter: buffer = ngx_snprintf(buffer, fmtlen, fmt, ##__VA_ARGS__); break;
size_t i;
for (i = 0; i < fmt->len; i++) {
if (fmt->data[i] == '%') {
if (++i >= fmt->len) {
*buffer++ = '%';
break;
}
switch (fmt->data[i]) {
DATETIME_FORMATS(DATETIME_CASE, tm)
default:
*buffer++ = fmt->data[i];
}
} else {
*buffer++ = fmt->data[i];
}
}
return buffer;
#undef DATETIME_CASE
}
typedef struct {
ngx_str_t path;
ngx_str_t local;
} ngx_fancyindex_headerfooter_conf_t;
/**
* Configuration structure for the fancyindex module. The configuration
* commands defined in the module do fill in the members of this structure.
*/
typedef struct {
ngx_flag_t enable; /**< Module is enabled. */
ngx_uint_t default_sort; /**< Default sort criterion. */
ngx_flag_t dirs_first; /**< Group directories together first when sorting */
ngx_flag_t localtime; /**< File mtime dates are sent in local time. */
ngx_flag_t exact_size; /**< Sizes are sent always in bytes. */
ngx_flag_t hide_symlinks; /**< Hide symbolic links in listings. */
ngx_flag_t show_path; /**< Whether to display or not the path + '</h1>' after the header */
ngx_flag_t hide_parent; /**< Hide parent directory. */
ngx_flag_t show_dot_files; /**< Show files that start with a dot.*/
ngx_str_t css_href; /**< Link to a CSS stylesheet, or empty if none. */
ngx_str_t time_format; /**< Format used for file timestamps. */
ngx_array_t *ignore; /**< List of files to ignore in listings. */
ngx_fancyindex_headerfooter_conf_t header;
ngx_fancyindex_headerfooter_conf_t footer;
} ngx_http_fancyindex_loc_conf_t;
#define NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME 0
#define NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE 1
#define NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE 2
#define NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME_DESC 3
#define NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE_DESC 4
#define NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE_DESC 5
static ngx_conf_enum_t ngx_http_fancyindex_sort_criteria[] = {
{ ngx_string("name"), NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME },
{ ngx_string("size"), NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE },
{ ngx_string("date"), NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE },
{ ngx_string("name_desc"), NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME_DESC },
{ ngx_string("size_desc"), NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE_DESC },
{ ngx_string("date_desc"), NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE_DESC },
{ ngx_null_string, 0 }
};
enum {
NGX_HTTP_FANCYINDEX_HEADERFOOTER_SUBREQUEST,
NGX_HTTP_FANCYINDEX_HEADERFOOTER_LOCAL,
};
static ngx_uint_t
headerfooter_kind(const ngx_str_t *value)
{
static const struct {
ngx_str_t name;
ngx_uint_t value;
} values[] = {
{ ngx_string("subrequest"), NGX_HTTP_FANCYINDEX_HEADERFOOTER_SUBREQUEST },
{ ngx_string("local"), NGX_HTTP_FANCYINDEX_HEADERFOOTER_LOCAL },
};
unsigned i;
for (i = 0; i < sizeof(values) / sizeof(values[0]); i++) {
if (value->len == values[i].name.len &&
ngx_strcasecmp(value->data, values[i].name.data) == 0)
{
return values[i].value;
}
}
return NGX_CONF_UNSET_UINT;
}
static char*
ngx_fancyindex_conf_set_headerfooter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_fancyindex_headerfooter_conf_t *item =
(void*) (((char*) conf) + cmd->offset);
ngx_str_t *values = cf->args->elts;
if (item->path.data)
return "is duplicate";
item->path = values[1];
/* Kind of path. Default is "subrequest". */
ngx_uint_t kind = NGX_HTTP_FANCYINDEX_HEADERFOOTER_SUBREQUEST;
if (cf->args->nelts == 3) {
kind = headerfooter_kind(&values[2]);
if (kind == NGX_CONF_UNSET_UINT) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"unknown header/footer kind \"%V\"", &values[2]);
return NGX_CONF_ERROR;
}
}
if (kind == NGX_HTTP_FANCYINDEX_HEADERFOOTER_LOCAL) {
ngx_file_t file;
ngx_file_info_t fi;
ssize_t n;
ngx_memzero(&file, sizeof(ngx_file_t));
file.log = cf->log;
file.fd = ngx_open_file(item->path.data, NGX_FILE_RDONLY, 0, 0);
if (file.fd == NGX_INVALID_FILE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
"cannot open file \"%V\"", &values[1]);
return NGX_CONF_ERROR;
}
if (ngx_fd_info(file.fd, &fi) == NGX_FILE_ERROR) {
ngx_close_file(file.fd);
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
"cannot get info for file \"%V\"", &values[1]);
return NGX_CONF_ERROR;
}
item->local.len = ngx_file_size(&fi);
item->local.data = ngx_pcalloc(cf->pool, item->local.len + 1);
if (item->local.data == NULL) {
ngx_close_file(file.fd);
return NGX_CONF_ERROR;
}
n = item->local.len;
while (n > 0) {
ssize_t r = ngx_read_file(&file,
item->local.data + file.offset,
n,
file.offset);
if (r == NGX_ERROR) {
ngx_close_file(file.fd);
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
"cannot read file \"%V\"", &values[1]);
return NGX_CONF_ERROR;
}
n -= r;
}
item->local.data[item->local.len] = '\0';
}
return NGX_CONF_OK;
}
#define NGX_HTTP_FANCYINDEX_PREALLOCATE 50
/**
* Calculates the length of a NULL-terminated string. It is ugly having to
* remember to substract 1 from the sizeof result.
*/
#define ngx_sizeof_ssz(_s) (sizeof(_s) - 1)
/**
* Compute the length of a statically allocated array
*/
#define DIM(x) (sizeof(x)/sizeof(*(x)))
/**
* Copy a static zero-terminated string. Useful to output template
* string pieces into a temporary buffer.
*/
#define ngx_cpymem_ssz(_p, _t) \
(ngx_cpymem((_p), (_t), sizeof(_t) - 1))
/**
* Copy a ngx_str_t.
*/
#define ngx_cpymem_str(_p, _s) \
(ngx_cpymem((_p), (_s).data, (_s).len))
/**
* Check whether a particular bit is set in a particular value.
*/
#define ngx_has_flag(_where, _what) \
(((_where) & (_what)) == (_what))
typedef struct {
ngx_str_t name;
size_t utf_len;
ngx_uint_t escape;
ngx_uint_t escape_html;
ngx_uint_t dir;
time_t mtime;
off_t size;
} ngx_http_fancyindex_entry_t;
static int ngx_libc_cdecl
ngx_http_fancyindex_cmp_entries_name_desc(const void *one, const void *two);
static int ngx_libc_cdecl
ngx_http_fancyindex_cmp_entries_size_desc(const void *one, const void *two);
static int ngx_libc_cdecl
ngx_http_fancyindex_cmp_entries_mtime_desc(const void *one, const void *two);
static int ngx_libc_cdecl
ngx_http_fancyindex_cmp_entries_name_asc(const void *one, const void *two);
static int ngx_libc_cdecl
ngx_http_fancyindex_cmp_entries_size_asc(const void *one, const void *two);
static int ngx_libc_cdecl
ngx_http_fancyindex_cmp_entries_mtime_asc(const void *one, const void *two);
static ngx_int_t ngx_http_fancyindex_error(ngx_http_request_t *r,
ngx_dir_t *dir, ngx_str_t *name);
static ngx_int_t ngx_http_fancyindex_init(ngx_conf_t *cf);
static void *ngx_http_fancyindex_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_fancyindex_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child);
static char *ngx_http_fancyindex_ignore(ngx_conf_t *cf,
ngx_command_t *cmd,
void *conf);
static uintptr_t
ngx_fancyindex_escape_filename(u_char *dst, u_char*src, size_t size);
/*
* These are used only once per handler invocation. We can tell GCC to
* inline them always, if possible (see how ngx_force_inline is defined
* above).
*/
static ngx_inline ngx_buf_t*
make_header_buf(ngx_http_request_t *r, const ngx_str_t css_href)
ngx_force_inline;
static ngx_command_t ngx_http_fancyindex_commands[] = {
{ ngx_string("fancyindex"),
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_fancyindex_loc_conf_t, enable),
NULL },
{ ngx_string("fancyindex_default_sort"),
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_fancyindex_loc_conf_t, default_sort),
&ngx_http_fancyindex_sort_criteria },
{ ngx_string("fancyindex_directories_first"),
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_fancyindex_loc_conf_t, dirs_first),
NULL },
{ ngx_string("fancyindex_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_fancyindex_loc_conf_t, localtime),
NULL },
{ ngx_string("fancyindex_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_fancyindex_loc_conf_t, exact_size),
NULL },
{ ngx_string("fancyindex_header"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
ngx_fancyindex_conf_set_headerfooter,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fancyindex_loc_conf_t, header),
NULL },
{ ngx_string("fancyindex_footer"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
ngx_fancyindex_conf_set_headerfooter,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fancyindex_loc_conf_t, footer),
NULL },
{ ngx_string("fancyindex_css_href"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fancyindex_loc_conf_t, css_href),
NULL },
{ ngx_string("fancyindex_ignore"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_fancyindex_ignore,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fancyindex_hide_symlinks"),
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_fancyindex_loc_conf_t, hide_symlinks),
NULL },
{ ngx_string("fancyindex_show_path"),
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_fancyindex_loc_conf_t, show_path),
NULL },
{ ngx_string("fancyindex_show_dotfiles"),
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_fancyindex_loc_conf_t, show_dot_files),
NULL },
{ ngx_string("fancyindex_hide_parent_dir"),
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_fancyindex_loc_conf_t, hide_parent),
NULL },
{ ngx_string("fancyindex_time_format"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fancyindex_loc_conf_t, time_format),
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_fancyindex_module_ctx = {
NULL, /* preconfiguration */
ngx_http_fancyindex_init, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_fancyindex_create_loc_conf, /* create location configuration */
ngx_http_fancyindex_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_fancyindex_module = {
NGX_MODULE_V1,
&ngx_http_fancyindex_module_ctx, /* module context */
ngx_http_fancyindex_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 const ngx_str_t css_href_pre =
ngx_string("<link rel=\"stylesheet\" href=\"");
static const ngx_str_t css_href_post =
ngx_string("\" type=\"text/css\"/>\n");
#ifdef NGX_ESCAPE_URI_COMPONENT
static inline uintptr_t
ngx_fancyindex_escape_filename(u_char *dst, u_char *src, size_t size)
{
return ngx_escape_uri(dst, src, size, NGX_ESCAPE_URI_COMPONENT);
}
#else /* !NGX_ESCAPE_URI_COMPONENT */
static uintptr_t
ngx_fancyindex_escape_filename(u_char *dst, u_char *src, size_t size)
{
/*
* The ngx_escape_uri() function will not escape colons or the
* ? character, which signals the beginning of the query string.
* So we handle those characters ourselves.
*
* TODO: Get rid of this once ngx_escape_uri() works as expected!
*/
u_int escapes = 0;
u_char *psrc = src;
size_t psize = size;
while (psize--) {
switch (*psrc++) {
case ':':
case '?':
case '[':
case ']':
escapes++;
break;
}
}
if (dst == NULL) {
return escapes + ngx_escape_uri(NULL, src, size, NGX_ESCAPE_HTML);
}
else if (escapes == 0) {
/* No need to do extra escaping, avoid the temporary buffer */
return ngx_escape_uri(dst, src, size, NGX_ESCAPE_HTML);
}
else {
uintptr_t uescapes = ngx_escape_uri(NULL, src, size, NGX_ESCAPE_HTML);
size_t bufsz = size + 2 * uescapes;
/*
* GCC and CLANG both support stack-allocated variable length
* arrays. Take advantage of that to avoid a malloc-free cycle.
*/
#if defined(__GNUC__) || defined(__clang__)
u_char cbuf[bufsz];
u_char *buf = cbuf;
#else /* __GNUC__ || __clang__ */
u_char *buf = (u_char*) malloc(sizeof(u_char) * bufsz);
#endif /* __GNUC__ || __clang__ */
ngx_escape_uri(buf, src, size, NGX_ESCAPE_HTML);
while (bufsz--) {
switch (*buf) {
case ':':
*dst++ = '%';
*dst++ = '3';
*dst++ = 'A';
break;
case '?':
*dst++ = '%';
*dst++ = '3';
*dst++ = 'F';
break;
case '[':
*dst++ = '%';
*dst++ = '5';
*dst++ = 'B';
break;
case ']':
*dst++ = '%';
*dst++ = '5';
*dst++ = 'D';
break;
default:
*dst++ = *buf;
}
buf++;
}
#if !defined(__GNUC__) && !defined(__clang__)
free(buf);
#endif /* !__GNUC__ && !__clang__ */
return escapes + uescapes;
}
}
#endif /* NGX_ESCAPE_URI_COMPONENT */
static ngx_inline ngx_buf_t*
make_header_buf(ngx_http_request_t *r, const ngx_str_t css_href)
{
ngx_buf_t *b;
size_t blen = r->uri.len
+ ngx_sizeof_ssz(t01_head1)
+ ngx_sizeof_ssz(t02_head2)
+ ngx_sizeof_ssz(t03_head3)
+ ngx_sizeof_ssz(t04_body1)
;
if (css_href.len) {
blen += css_href_pre.len \
+ css_href.len \
+ css_href_post.len
;
}
if ((b = ngx_create_temp_buf(r->pool, blen)) == NULL)
return NULL;
b->last = ngx_cpymem_ssz(b->last, t01_head1);
if (css_href.len) {
b->last = ngx_cpymem_str(b->last, css_href_pre);
b->last = ngx_cpymem_str(b->last, css_href);
b->last = ngx_cpymem_str(b->last, css_href_post);
}
b->last = ngx_cpymem_ssz(b->last, t02_head2);
b->last = ngx_cpymem_str(b->last, r->uri);
b->last = ngx_cpymem_ssz(b->last, t03_head3);
b->last = ngx_cpymem_ssz(b->last, t04_body1);
return b;
}
static ngx_inline ngx_int_t
make_content_buf(
ngx_http_request_t *r, ngx_buf_t **pb,
ngx_http_fancyindex_loc_conf_t *alcf)
{
ngx_http_fancyindex_entry_t *entry;
int (*sort_cmp_func)(const void *, const void *);
const char *sort_url_args = "";
off_t length;
size_t len, root, allocated, escape_html;
int64_t multiplier;
u_char *filename, *last;
ngx_tm_t tm;
ngx_array_t entries;
ngx_time_t *tp;
ngx_uint_t i, j;
ngx_str_t path;
ngx_dir_t dir;
ngx_buf_t *b;
static const char *sizes[] = { "EiB", "PiB", "TiB", "GiB", "MiB", "KiB", "B" };
static const int64_t exbibyte = 1024LL * 1024LL * 1024LL *
1024LL * 1024LL * 1024LL;
/*
* NGX_DIR_MASK_LEN is lesser than NGX_HTTP_FANCYINDEX_PREALLOCATE
*/
if ((last = ngx_http_map_uri_to_path(r, &path, &root,
NGX_HTTP_FANCYINDEX_PREALLOCATE)) == NULL)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
allocated = path.len;
path.len = last - path.data - 1;
path.data[path.len] = '\0';
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fancyindex: \"%s\"", path.data);
if (ngx_open_dir(&path, &dir) == NGX_ERROR) {
ngx_int_t rc, err = ngx_errno;
ngx_uint_t level;
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 /* NGX_SUPPRESS_WARN */
if (ngx_array_init(&entries, r->pool, 40,
sizeof(ngx_http_fancyindex_entry_t)) != NGX_OK)
return ngx_http_fancyindex_error(r, &dir, &path);
filename = path.data;
filename[path.len] = '/';
/* Read directory entries and their associated information. */
for (;;) {
ngx_set_errno(0);
if (ngx_read_dir(&dir) == NGX_ERROR) {
ngx_int_t 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_fancyindex_error(r, &dir, &path);
}
break;
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fancyindex file: \"%s\"", ngx_de_name(&dir));
len = ngx_de_namelen(&dir);
if (!alcf->show_dot_files && ngx_de_name(&dir)[0] == '.')
continue;
if (alcf->hide_symlinks && ngx_de_is_link (&dir))
continue;
#if NGX_PCRE
{
ngx_str_t str;
str.len = len;
str.data = ngx_de_name(&dir);
if (alcf->ignore && ngx_regex_exec_array(alcf->ignore, &str,
r->connection->log)
!= NGX_DECLINED)
{
continue;
}
}
#else /* !NGX_PCRE */
if (alcf->ignore) {
u_int match_found = 0;
ngx_str_t *s = alcf->ignore->elts;
for (i = 0; i < alcf->ignore->nelts; i++, s++) {
if (ngx_strcmp(ngx_de_name(&dir), s->data) == 0) {
match_found = 1;
break;
}
}
if (match_found) {
continue;
}
}
#endif /* NGX_PCRE */
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_FANCYINDEX_PREALLOCATE;
if ((filename = ngx_palloc(r->pool, allocated)) == NULL)
return ngx_http_fancyindex_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) {
ngx_int_t err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, err,
ngx_de_info_n " \"%s\" failed", filename);
continue;
}
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_fancyindex_error(r, &dir, &path);
}
}
}
if ((entry = ngx_array_push(&entries)) == NULL)
return ngx_http_fancyindex_error(r, &dir, &path);
entry->name.len = len;
entry->name.data = ngx_palloc(r->pool, len + 1);
if (entry->name.data == NULL)
return ngx_http_fancyindex_error(r, &dir, &path);
ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
entry->escape = 2 * ngx_fancyindex_escape_filename(NULL,
ngx_de_name(&dir),
len);
entry->escape_html = ngx_escape_html(NULL,
entry->name.data,
entry->name.len);
entry->dir = ngx_de_is_dir(&dir);
entry->mtime = ngx_de_mtime(&dir);
entry->size = ngx_de_size(&dir);
entry->utf_len = (r->headers_out.charset.len == 5 &&
ngx_strncasecmp(r->headers_out.charset.data, (u_char*) "utf-8", 5) == 0)
? ngx_utf8_length(entry->name.data, entry->name.len)
: len;
}
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", &path);
}
/*
* Calculate needed buffer length.
*/
escape_html = ngx_escape_html(NULL, r->uri.data, r->uri.len);
if (alcf->show_path)
len = r->uri.len + escape_html
+ ngx_sizeof_ssz(t05_body2)
+ ngx_sizeof_ssz(t06_list1)
+ ngx_sizeof_ssz(t_parentdir_entry)
+ ngx_sizeof_ssz(t07_list2)
+ ngx_fancyindex_timefmt_calc_size (&alcf->time_format) * entries.nelts
;
else
len = r->uri.len + escape_html
+ ngx_sizeof_ssz(t06_list1)
+ ngx_sizeof_ssz(t_parentdir_entry)
+ ngx_sizeof_ssz(t07_list2)
+ ngx_fancyindex_timefmt_calc_size (&alcf->time_format) * entries.nelts
;
/*
* If we are a the root of the webserver (URI = "/" --> length of 1),
* do not display the "Parent Directory" link.
*/
if (r->uri.len == 1) {
len -= ngx_sizeof_ssz(t_parentdir_entry);
}
entry = entries.elts;
for (i = 0; i < entries.nelts; i++) {
/*
* Genearated table rows are as follows, unneeded whitespace
* is stripped out:
*
* <tr>
* <td><a href="U[?sort]">fname</a></td>
* <td>size</td><td>date</td>
* </tr>
*/
len += ngx_sizeof_ssz("<tr><td colspan=\"2\" class=\"link\"><a href=\"")
+ entry[i].name.len + entry[i].escape /* Escaped URL */
+ ngx_sizeof_ssz("?C=x&O=y") /* URL sorting arguments */
+ ngx_sizeof_ssz("\" title=\"")
+ entry[i].name.len + entry[i].utf_len + entry[i].escape_html
+ ngx_sizeof_ssz("\">")
+ entry[i].name.len + entry[i].utf_len + entry[i].escape_html
+ ngx_sizeof_ssz("</a></td><td class=\"size\">")
+ 20 /* File size */
+ ngx_sizeof_ssz("</td><td class=\"date\">") /* Date prefix */
+ ngx_sizeof_ssz("</td></tr>\n") /* Date suffix */
+ 2 /* CR LF */
;
}
if ((b = ngx_create_temp_buf(r->pool, len)) == NULL)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
/*
* Determine the sorting criteria. URL arguments look like:
*
* C=x[&O=y]
*
* Where x={M,S,N} and y={A,D}
*/
if ((r->args.len == 3 || (r->args.len == 7 && r->args.data[3] == '&')) &&
r->args.data[0] == 'C' && r->args.data[1] == '=')
{
/* Determine whether the direction of the sorting */
ngx_int_t sort_descending = r->args.len == 7
&& r->args.data[4] == 'O'
&& r->args.data[5] == '='
&& r->args.data[6] == 'D';
/* Pick the sorting criteria */
switch (r->args.data[2]) {
case 'M': /* Sort by mtime */
if (sort_descending) {
sort_cmp_func = ngx_http_fancyindex_cmp_entries_mtime_desc;
if (alcf->default_sort != NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE_DESC)
sort_url_args = "?C=M&O=D";
}
else {
sort_cmp_func = ngx_http_fancyindex_cmp_entries_mtime_asc;
if (alcf->default_sort != NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE)
sort_url_args = "?C=M&O=A";
}
break;
case 'S': /* Sort by size */
if (sort_descending) {
sort_cmp_func = ngx_http_fancyindex_cmp_entries_size_desc;
if (alcf->default_sort != NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE_DESC)
sort_url_args = "?C=S&O=D";
}
else {
sort_cmp_func = ngx_http_fancyindex_cmp_entries_size_asc;
if (alcf->default_sort != NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE)
sort_url_args = "?C=S&O=A";
}
break;
case 'N': /* Sort by name */
default:
if (sort_descending) {
sort_cmp_func = ngx_http_fancyindex_cmp_entries_name_desc;
if (alcf->default_sort != NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME_DESC)
sort_url_args = "?C=N&O=D";
}
else {
sort_cmp_func = ngx_http_fancyindex_cmp_entries_name_asc;
if (alcf->default_sort != NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME)
sort_url_args = "?C=N&O=A";
}
break;
}
}
else {
switch (alcf->default_sort) {
case NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE_DESC:
sort_cmp_func = ngx_http_fancyindex_cmp_entries_mtime_desc;
break;
case NGX_HTTP_FANCYINDEX_SORT_CRITERION_DATE:
sort_cmp_func = ngx_http_fancyindex_cmp_entries_mtime_asc;
break;
case NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE_DESC:
sort_cmp_func = ngx_http_fancyindex_cmp_entries_size_desc;
break;
case NGX_HTTP_FANCYINDEX_SORT_CRITERION_SIZE:
sort_cmp_func = ngx_http_fancyindex_cmp_entries_size_asc;
break;
case NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME_DESC:
sort_cmp_func = ngx_http_fancyindex_cmp_entries_name_desc;
break;
case NGX_HTTP_FANCYINDEX_SORT_CRITERION_NAME:
default:
sort_cmp_func = ngx_http_fancyindex_cmp_entries_name_asc;
break;
}
}
/* Sort entries, if needed */
if (entries.nelts > 1) {
if (alcf->dirs_first)
{
ngx_http_fancyindex_entry_t *l, *r;
l = entry;
r = entry + entries.nelts - 1;
while (l < r)
{
while (l < r && l->dir)
l++;
while (l < r && !r->dir)
r--;
if (l < r) {