Mercurial > hg > nginx-ranges
view src/http/ngx_http_file_cache.c @ 34:aab2ea7c0458 NGINX_0_1_17
nginx 0.1.17
*) Change: the ngx_http_rewrite_module was rewritten from the scratch.
Now it is possible to redirect, to return the error codes, to check
the variables and referrers. The directives can be used inside
locations. The redirect directive was canceled.
*) Feature: the ngx_http_geo_module.
*) Feature: the proxy_set_x_var and fastcgi_set_var directives.
*) Bugfix: the location configuration with "=" modifier may be used in
another location.
*) Bugfix: the correct content type was set only for requests that use
small caps letters in extension.
*) Bugfix: if the proxy_pass or fastcgi_pass directives were set in the
location, and access was denied, and the error was redirected to a
static page, then the segmentation fault occurred.
*) Bugfix: if in a proxied "Location" header was a relative URL, then a
host name and a slash were added to them; bug appeared in 0.1.14.
*) Bugfix: the system error message was not logged on Linux.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Thu, 03 Feb 2005 00:00:00 +0300 |
parents | 45fe5b98a9de |
children | 13710a1813ad |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #if (NGX_HAVE_OPENSSL_MD5_H) #include <openssl/md5.h> #else #include <md5.h> #endif #if (NGX_OPENSSL_MD5) #define MD5Init MD5_Init #define MD5Update MD5_Update #define MD5Final MD5_Final #endif ngx_int_t ngx_http_file_cache_get(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx) { ngx_uint_t i; ngx_str_t *key; ngx_http_cache_t *c; MD5_CTX md5; c = r->cache; c->file.name.len = ctx->path->name.len + 1 + ctx->path->len + 32; if (!(c->file.name.data = ngx_palloc(r->pool, c->file.name.len + 1))) { return NGX_ABORT; } MD5Init(&md5); key = c->key.elts; for (i = 0; i < c->key.nelts; i++) { MD5Update(&md5, key[i].data, key[i].len); } MD5Update(&md5, ctx->key.data, ctx->key.len); MD5Final(c->md5, &md5); ngx_memcpy(c->file.name.data, ctx->path->name.data, ctx->path->name.len); ngx_md5_text(c->file.name.data + ctx->path->name.len + 1 + ctx->path->len, c->md5); ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "file cache key: %V, md5: %s", &ctx->key, c->file.name.data + ctx->path->name.len + 1 + ctx->path->len); ngx_create_hashed_filename(&c->file, ctx->path); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "file cache name: %s", c->file.name.data); return ngx_http_file_cache_open(r->cache); } ngx_int_t ngx_http_file_cache_open(ngx_http_cache_t *c) { ssize_t n; ngx_err_t err; ngx_http_cache_header_t *h; c->file.fd = ngx_open_file(c->file.name.data, NGX_FILE_RDONLY, NGX_FILE_OPEN); if (c->file.fd == NGX_INVALID_FILE) { err = ngx_errno; if (err == NGX_ENOENT || err == NGX_ENOTDIR) { return NGX_DECLINED; } ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno, ngx_open_file_n " \"%s\" failed", c->file.name.data); return NGX_ERROR; } if (c->uniq) { if (ngx_fd_info(c->file.fd, &c->file.info) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno, ngx_fd_info_n " \"%s\" failed", c->file.name.data); return NGX_ERROR; } if (ngx_file_uniq(&c->file.info) == c->uniq) { if (ngx_close_file(c->file.fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, ngx_close_file_n " \"%s\" failed", c->file.name.data); } return NGX_HTTP_CACHE_THE_SAME; } } n = ngx_read_file(&c->file, c->buf->pos, c->buf->end - c->buf->last, 0); if (n == NGX_ERROR || n == NGX_AGAIN) { return n; } if (n <= c->header_size) { ngx_log_error(NGX_LOG_CRIT, c->log, 0, "cache file \"%s\" is too small", c->file.name.data); return NGX_ERROR; } h = (ngx_http_cache_header_t *) c->buf->pos; c->expires = h->expires; c->last_modified= h->last_modified; c->date = h->date; c->length = h->length; if (h->key_len > (size_t) (c->buf->end - c->buf->pos)) { ngx_log_error(NGX_LOG_ALERT, c->log, 0, "cache file \"%s\" is probably invalid", c->file.name.data); return NGX_DECLINED; } #if 0 /* TODO */ if (c->key_len && h->key_len != c->key_len) { ngx_strncmp(h->key, c->key_data, h->key_len) != 0)) h->key[h->key_len] = '\0'; ngx_log_error(NGX_LOG_ALERT, c->log, 0, "md5 collision: \"%s\" and \"%s\"", h->key, c->key.data); return NGX_DECLINED; } #endif c->buf->last += n; if (c->expires < ngx_time()) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http file cache expired"); return NGX_HTTP_CACHE_STALE; } /* TODO: NGX_HTTP_CACHE_AGED */ /* STUB */ return NGX_DECLINED; return NGX_OK; } #if 0 int ngx_http_cache_update_file(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx, ngx_str_t *temp_file) { int retry; ngx_err_t err; retry = 0; for ( ;; ) { if (ngx_rename_file(temp_file->data, ctx->file.name.data) == NGX_OK) { return NGX_OK; } err = ngx_errno; #if (NGX_WIN32) if (err == NGX_EEXIST) { if (ngx_win32_rename_file(temp_file, &ctx->file.name, r->pool) == NGX_ERROR) { return NGX_ERROR; } } #endif if (retry || (err != NGX_ENOENT && err != NGX_ENOTDIR)) { ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, ngx_rename_file_n "(\"%s\", \"%s\") failed", temp_file->data, ctx->file.name.data); return NGX_ERROR; } if (ngx_create_path(&ctx->file, ctx->path) == NGX_ERROR) { return NGX_ERROR; } retry = 1; } } #endif ngx_int_t ngx_http_cache_cleaner_handler(ngx_gc_t *gc, ngx_str_t *name, ngx_dir_t *dir) { int rc; ngx_buf_t buf; ngx_http_cache_t c; u_char data[sizeof(ngx_http_cache_header_t)]; ngx_memzero(&c, sizeof(ngx_http_cache_t)); c.file.fd = NGX_INVALID_FILE; c.file.name = *name; c.file.log = gc->log; c.header_size = sizeof(ngx_http_cache_header_t); c.buf = &buf; c.log = gc->log; c.key_len = 0; buf.memory = 1; buf.temporary = 1; buf.pos = data; buf.last = data; buf.start = data; buf.end = data + sizeof(ngx_http_cache_header_t); rc = ngx_http_file_cache_open(&c); /* TODO: NGX_AGAIN */ if (rc != NGX_ERROR&& rc != NGX_DECLINED && rc != NGX_HTTP_CACHE_STALE) { return NGX_OK; } if (ngx_delete_file(name->data) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_CRIT, c.log, ngx_errno, ngx_delete_file_n " \"%s\" failed", name->data); return NGX_ERROR; } gc->deleted++; gc->freed += ngx_de_size(dir); return NGX_OK; }