mirror of
https://github.com/nginx/nginx.git
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8a2b2fb4fb
*) Feature: the ngx_http_dav_module.
*) Change: the ngx_http_perl_module optimizations.
Thanks to Sergey Skvortsov.
*) Feature: the ngx_http_perl_module supports the $r->request_body_file
method.
*) Feature: the "client_body_in_file_only" directive.
*) Workaround: now on disk overflow nginx tries to write access logs
once a second only.
Thanks to Anton Yuzhaninov and Maxim Dounin.
*) Bugfix: now the "limit_rate" directive more precisely limits rate if
rate is more than 100 Kbyte/s.
Thanks to ForJest.
*) Bugfix: now the IMAP/POP3 proxy escapes the "\r" and "\n" symbols in
login and password to pass authorization server.
Thanks to Maxim Dounin.
260 lines
6.4 KiB
C
260 lines
6.4 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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#if (NGX_HAVE_OPENSSL_MD5_H)
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#include <openssl/md5.h>
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#else
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#include <md5.h>
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#endif
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#if (NGX_OPENSSL_MD5)
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#define MD5Init MD5_Init
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#define MD5Update MD5_Update
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#define MD5Final MD5_Final
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#endif
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ngx_int_t ngx_http_file_cache_get(ngx_http_request_t *r,
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ngx_http_cache_ctx_t *ctx)
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{
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ngx_uint_t i;
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ngx_str_t *key;
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ngx_http_cache_t *c;
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MD5_CTX md5;
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c = r->cache;
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c->file.name.len = ctx->path->name.len + 1 + ctx->path->len + 32;
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if (!(c->file.name.data = ngx_palloc(r->pool, c->file.name.len + 1))) {
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return NGX_ABORT;
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}
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MD5Init(&md5);
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key = c->key.elts;
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for (i = 0; i < c->key.nelts; i++) {
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MD5Update(&md5, key[i].data, key[i].len);
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}
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MD5Update(&md5, ctx->key.data, ctx->key.len);
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MD5Final(c->md5, &md5);
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ngx_memcpy(c->file.name.data, ctx->path->name.data, ctx->path->name.len);
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ngx_md5_text(c->file.name.data + ctx->path->name.len + 1 + ctx->path->len,
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c->md5);
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ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"file cache key: %V, md5: %s", &ctx->key,
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c->file.name.data + ctx->path->name.len + 1 + ctx->path->len);
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ngx_create_hashed_filename(&c->file, ctx->path);
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"file cache name: %s", c->file.name.data);
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return ngx_http_file_cache_open(r->cache);
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}
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ngx_int_t ngx_http_file_cache_open(ngx_http_cache_t *c)
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{
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ssize_t n;
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ngx_err_t err;
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ngx_http_cache_header_t *h;
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c->file.fd = ngx_open_file(c->file.name.data,
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NGX_FILE_RDONLY, NGX_FILE_OPEN);
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if (c->file.fd == NGX_INVALID_FILE) {
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err = ngx_errno;
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if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
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return NGX_DECLINED;
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}
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ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno,
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ngx_open_file_n " \"%s\" failed", c->file.name.data);
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return NGX_ERROR;
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}
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if (c->uniq) {
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if (ngx_fd_info(c->file.fd, &c->file.info) == NGX_FILE_ERROR) {
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ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno,
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ngx_fd_info_n " \"%s\" failed", c->file.name.data);
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return NGX_ERROR;
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}
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if (ngx_file_uniq(&c->file.info) == c->uniq) {
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if (ngx_close_file(c->file.fd) == NGX_FILE_ERROR) {
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ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
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ngx_close_file_n " \"%s\" failed",
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c->file.name.data);
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}
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return NGX_HTTP_CACHE_THE_SAME;
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}
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}
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n = ngx_read_file(&c->file, c->buf->pos, c->buf->end - c->buf->last, 0);
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if (n == NGX_ERROR || n == NGX_AGAIN) {
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return n;
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}
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if (n <= c->header_size) {
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ngx_log_error(NGX_LOG_CRIT, c->log, 0,
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"cache file \"%s\" is too small", c->file.name.data);
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return NGX_ERROR;
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}
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h = (ngx_http_cache_header_t *) c->buf->pos;
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c->expires = h->expires;
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c->last_modified= h->last_modified;
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c->date = h->date;
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c->length = h->length;
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if (h->key_len > (size_t) (c->buf->end - c->buf->pos)) {
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ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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"cache file \"%s\" is probably invalid",
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c->file.name.data);
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return NGX_DECLINED;
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}
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#if 0
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/* TODO */
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if (c->key_len && h->key_len != c->key_len) {
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ngx_strncmp(h->key, c->key_data, h->key_len) != 0))
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h->key[h->key_len] = '\0';
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ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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"md5 collision: \"%s\" and \"%s\"",
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h->key, c->key.data);
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return NGX_DECLINED;
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}
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#endif
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c->buf->last += n;
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if (c->expires < ngx_time()) {
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http file cache expired");
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return NGX_HTTP_CACHE_STALE;
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}
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/* TODO: NGX_HTTP_CACHE_AGED */
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/* STUB */ return NGX_DECLINED;
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return NGX_OK;
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}
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#if 0
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int ngx_http_cache_update_file(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx,
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ngx_str_t *temp_file)
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{
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int retry;
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ngx_err_t err;
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retry = 0;
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for ( ;; ) {
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if (ngx_rename_file(temp_file->data, ctx->file.name.data) == NGX_OK) {
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return NGX_OK;
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}
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err = ngx_errno;
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#if (NGX_WIN32)
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if (err == NGX_EEXIST) {
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if (ngx_win32_rename_file(temp_file, &ctx->file.name, r->pool)
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== NGX_ERROR)
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{
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return NGX_ERROR;
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}
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}
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#endif
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if (retry || (err != NGX_ENOENT && err != NGX_ENOTDIR)) {
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ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
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ngx_rename_file_n "(\"%s\", \"%s\") failed",
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temp_file->data, ctx->file.name.data);
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return NGX_ERROR;
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}
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if (ngx_create_path(&ctx->file, ctx->path) == NGX_ERROR) {
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return NGX_ERROR;
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}
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retry = 1;
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}
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}
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#endif
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ngx_int_t ngx_http_cache_cleaner_handler(ngx_gc_t *gc, ngx_str_t *name,
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ngx_dir_t *dir)
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{
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int rc;
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ngx_buf_t buf;
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ngx_http_cache_t c;
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u_char data[sizeof(ngx_http_cache_header_t)];
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ngx_memzero(&c, sizeof(ngx_http_cache_t));
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c.file.fd = NGX_INVALID_FILE;
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c.file.name = *name;
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c.file.log = gc->log;
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c.header_size = sizeof(ngx_http_cache_header_t);
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c.buf = &buf;
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c.log = gc->log;
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c.key_len = 0;
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buf.memory = 1;
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buf.temporary = 1;
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buf.pos = data;
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buf.last = data;
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buf.start = data;
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buf.end = data + sizeof(ngx_http_cache_header_t);
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rc = ngx_http_file_cache_open(&c);
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/* TODO: NGX_AGAIN */
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if (rc != NGX_ERROR&& rc != NGX_DECLINED && rc != NGX_HTTP_CACHE_STALE) {
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return NGX_OK;
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}
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if (ngx_delete_file(name->data) == NGX_FILE_ERROR) {
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ngx_log_error(NGX_LOG_CRIT, c.log, ngx_errno,
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ngx_delete_file_n " \"%s\" failed", name->data);
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return NGX_ERROR;
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}
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gc->deleted++;
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gc->freed += ngx_de_size(dir);
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return NGX_OK;
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}
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