Mercurial > hg > nginx-quic
view src/http/ngx_http_file_cache.c @ 2134:13652cba8633
fix building by bcc broken in r2130
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 04 Aug 2008 09:14:30 +0000 |
parents | f971949ffb58 |
children | 3a8a53c0c42f |
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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, err, 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; }