/* * Copyright (C) Igor Sysoev */ #include #include #include #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; 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_http_autoindex_loc_conf_t; #define NGX_HTTP_AUTOINDEX_NAME_LEN 50 static int 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_null_command }; ngx_http_module_t ngx_http_autoindex_module_ctx = { NULL, /* pre conf */ 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, &ngx_http_autoindex_module_ctx, /* module context */ ngx_http_autoindex_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ ngx_http_autoindex_init, /* init module */ NULL /* init child */ }; static u_char title[] = "" CRLF "Index of " ; static u_char header[] = "" CRLF "" CRLF "

Index of " ; static u_char tail[] = "" CRLF "" CRLF ; static ngx_int_t ngx_http_autoindex_handler(ngx_http_request_t r) { u_char last; size_t len; ngx_tm_t tm; ngx_int_t rc; 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 - 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); } 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); } 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) { rc = NGX_OK; } else { 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; if (!(fname.data = ngx_palloc(pool, fname.len))) { 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); } } } if (!(entry = ngx_array_push(&entries))) { return ngx_http_autoindex_error(r, &dir, dname.data); } entry->name.len = len; entry->escape = 2 * ngx_escape_uri(NULL, ngx_de_name(&dir), len, NGX_ESCAPE_HTML); if (!(entry->name.data = ngx_palloc(pool, len + entry->escape + 1))) { return ngx_http_autoindex_error(r, &dir, dname.data); } ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1); 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("

") - 1 + sizeof("

../" CRLF) - 1
          + sizeof("

") - 1 + sizeof(tail) - 1; entry = entries.elts; for (i = 0; i < entries.nelts; i++) { len += sizeof("") - 1 + NGX_HTTP_AUTOINDEX_NAME_LEN + sizeof(">") - 2 + sizeof("") - 1 + sizeof(" 28-Sep-1970 12:00 ") - 1 + 19 + 2; } if (!(b = ngx_create_temp_buf(r->pool, len))) { 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, "", sizeof("") - 1); b->last = ngx_cpymem(b->last, "

../" CRLF,
                         sizeof("
../" CRLF) - 1);

    for (i = 0; i < entries.nelts; i++) {
        b->last = ngx_cpymem(b->last, "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++ = '>';

        b->last = ngx_cpystrn(b->last, entry[i].name.data,
                              NGX_HTTP_AUTOINDEX_NAME_LEN + 1);

        len = entry[i].name.len;

        if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
            b->last = ngx_cpymem(b->last - 3, "..>",
                                 sizeof("..>") - 1);

        } else {
            if (entry[i].dir && NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
                *b->last++ = '/';
                len++;
            }

            b->last = ngx_cpymem(b->last, "", sizeof("") - 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, &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 (entry[i].dir) {
            b->last = ngx_cpymem(b->last,  "                  -",
                                 sizeof("                  -") - 1);

        } else {
            b->last = ngx_sprintf(b->last, "%19O", entry[i].size);
        }

        *b->last++ = CR;
        *b->last++ = LF;
    }

    /* TODO: free temporary pool */

    b->last = ngx_cpymem(b->last, "
", sizeof("

") - 1); b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1); r->headers_out.status = NGX_HTTP_OK; r->headers_out.content_length_n = b->last - b->pos; r->headers_out.content_type = ngx_list_push(&r->headers_out.headers); if (r->headers_out.content_type == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } r->headers_out.content_type->key.len = 0; r->headers_out.content_type->key.data = NULL; r->headers_out.content_type->value.len = sizeof("text/html") - 1; r->headers_out.content_type->value.data = (u_char *) "text/html"; rc = ngx_http_send_header(r); if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { return rc; } if (!r->main) { b->last_buf = 1; } out.buf = b; out.next = NULL; return ngx_http_output_filter(r, &out); } static int 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; } if (!(ctx->buf = ngx_create_temp_buf(ctx->pool, ctx->alloc_size))) { return NULL; } if (!(cl = ngx_alloc_chain_link(ctx->pool))) { 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; 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); return NGX_CONF_OK; }