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-rw-r--r--support/htcacheclean.c1842
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diff --git a/support/htcacheclean.c b/support/htcacheclean.c
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--- /dev/null
+++ b/support/htcacheclean.c
@@ -0,0 +1,1842 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * htcacheclean.c: simple program for cleaning of
+ * the disk cache of the Apache HTTP server
+ *
+ * Contributed by Andreas Steinmetz <ast domdv.de>
+ * 8 Oct 2004
+ */
+
+#include "apr.h"
+#include "apr_lib.h"
+#include "apr_strings.h"
+#include "apr_file_io.h"
+#include "apr_file_info.h"
+#include "apr_pools.h"
+#include "apr_hash.h"
+#include "apr_thread_proc.h"
+#include "apr_signal.h"
+#include "apr_getopt.h"
+#include "apr_md5.h"
+#include "apr_ring.h"
+#include "apr_date.h"
+#include "apr_buckets.h"
+
+#include "../modules/cache/cache_common.h"
+#include "../modules/cache/cache_disk_common.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+/* define the following for debugging */
+#undef DEBUG
+
+/*
+ * Note: on Linux delays <= 2ms are busy waits without
+ * scheduling, so never use a delay <= 2ms below
+ */
+
+#define NICE_DELAY 10000 /* usecs */
+#define DELETE_NICE 10 /* be nice after this amount of delete ops */
+#define STAT_ATTEMPTS 10 /* maximum stat attempts for a file */
+#define STAT_DELAY 5000 /* usecs */
+#define HEADER 1 /* headers file */
+#define DATA 2 /* body file */
+#define TEMP 4 /* temporary file */
+#define HEADERDATA (HEADER|DATA)
+#define MAXDEVIATION 3600 /* secs */
+#define SECS_PER_MIN 60
+#define KBYTE 1024
+#define MBYTE 1048576
+#define GBYTE 1073741824
+
+#define DIRINFO (APR_FINFO_MTIME|APR_FINFO_SIZE|APR_FINFO_TYPE|APR_FINFO_LINK)
+
+typedef struct _direntry {
+ APR_RING_ENTRY(_direntry) link;
+ int type; /* type of file/fileset: TEMP, HEADER, DATA, HEADERDATA */
+ apr_time_t htime; /* headers file modification time */
+ apr_time_t dtime; /* body file modification time */
+ apr_off_t hsize; /* headers file size */
+ apr_off_t dsize; /* body or temporary file size */
+ char *basename; /* file/fileset base name */
+} DIRENTRY;
+
+typedef struct _entry {
+ APR_RING_ENTRY(_entry) link;
+ apr_time_t expire; /* cache entry exiration time */
+ apr_time_t response_time; /* cache entry time of last response to client */
+ apr_time_t htime; /* headers file modification time */
+ apr_time_t dtime; /* body file modification time */
+ apr_off_t hsize; /* headers file size */
+ apr_off_t dsize; /* body or temporary file size */
+ char *basename; /* fileset base name */
+} ENTRY;
+
+
+static int delcount; /* file deletion count for nice mode */
+static int interrupted; /* flag: true if SIGINT or SIGTERM occurred */
+static int realclean; /* flag: true means user said apache is not running */
+static int verbose; /* flag: true means print statistics */
+static int benice; /* flag: true means nice mode is activated */
+static int dryrun; /* flag: true means dry run, don't actually delete
+ anything */
+static int deldirs; /* flag: true means directories should be deleted */
+static int listurls; /* flag: true means list cached urls */
+static int listextended;/* flag: true means list cached urls */
+static int baselen; /* string length of the path to the proxy directory */
+static apr_time_t now; /* start time of this processing run */
+
+static apr_file_t *errfile; /* stderr file handle */
+static apr_file_t *outfile; /* stdout file handle */
+static apr_off_t unsolicited; /* file size summary for deleted unsolicited
+ files */
+static ENTRY root; /* ENTRY ring anchor */
+
+/* short program name as called */
+static const char *shortname = "htcacheclean";
+
+/* what did we clean? */
+struct stats {
+ apr_off_t total;
+ apr_off_t sum;
+ apr_off_t max;
+ apr_off_t ntotal;
+ apr_off_t nodes;
+ apr_off_t inodes;
+ apr_off_t etotal;
+ apr_off_t entries;
+ apr_off_t dfuture;
+ apr_off_t dexpired;
+ apr_off_t dfresh;
+};
+
+
+#ifdef DEBUG
+/*
+ * fake delete for debug purposes
+ */
+#define apr_file_remove fake_file_remove
+static void fake_file_remove(char *pathname, apr_pool_t *p)
+{
+ apr_finfo_t info;
+
+ /* stat and printing to simulate some deletion system load and to
+ display what would actually have happened */
+ apr_stat(&info, pathname, DIRINFO, p);
+ apr_file_printf(errfile, "would delete %s" APR_EOL_STR, pathname);
+}
+#endif
+
+/*
+ * called on SIGINT or SIGTERM
+ */
+static void setterm(int unused)
+{
+#ifdef DEBUG
+ apr_file_printf(errfile, "interrupt" APR_EOL_STR);
+#endif
+ interrupted = 1;
+}
+
+/*
+ * called in out of memory condition
+ */
+static int oom(int unused)
+{
+ static int called = 0;
+
+ /* be careful to call exit() only once */
+ if (!called) {
+ called = 1;
+ exit(1);
+ }
+ return APR_ENOMEM;
+}
+
+/*
+ * print purge statistics
+ */
+static void printstats(char *path, struct stats *s)
+{
+ char ttype, stype, mtype, utype;
+ apr_off_t tfrag, sfrag, ufrag;
+
+ if (!verbose) {
+ return;
+ }
+
+ ttype = 'K';
+ tfrag = ((s->total * 10) / KBYTE) % 10;
+ s->total /= KBYTE;
+ if (s->total >= KBYTE) {
+ ttype = 'M';
+ tfrag = ((s->total * 10) / KBYTE) % 10;
+ s->total /= KBYTE;
+ }
+
+ stype = 'K';
+ sfrag = ((s->sum * 10) / KBYTE) % 10;
+ s->sum /= KBYTE;
+ if (s->sum >= KBYTE) {
+ stype = 'M';
+ sfrag = ((s->sum * 10) / KBYTE) % 10;
+ s->sum /= KBYTE;
+ }
+
+ mtype = 'K';
+ s->max /= KBYTE;
+ if (s->max >= KBYTE) {
+ mtype = 'M';
+ s->max /= KBYTE;
+ }
+
+ apr_file_printf(errfile, "Cleaned %s. Statistics:" APR_EOL_STR, path);
+ if (unsolicited) {
+ utype = 'K';
+ ufrag = ((unsolicited * 10) / KBYTE) % 10;
+ unsolicited /= KBYTE;
+ if (unsolicited >= KBYTE) {
+ utype = 'M';
+ ufrag = ((unsolicited * 10) / KBYTE) % 10;
+ unsolicited /= KBYTE;
+ }
+ if (!unsolicited && !ufrag) {
+ ufrag = 1;
+ }
+ apr_file_printf(errfile, "unsolicited size %d.%d%c" APR_EOL_STR,
+ (int)(unsolicited), (int)(ufrag), utype);
+ }
+ apr_file_printf(errfile, "size limit %" APR_OFF_T_FMT ".0%c" APR_EOL_STR,
+ s->max, mtype);
+ apr_file_printf(errfile, "inodes limit %" APR_OFF_T_FMT APR_EOL_STR,
+ s->inodes);
+ apr_file_printf(
+ errfile,
+ "total size was %" APR_OFF_T_FMT ".%" APR_OFF_T_FMT "%c, total size now "
+ "%" APR_OFF_T_FMT ".%" APR_OFF_T_FMT "%c" APR_EOL_STR, s->total,
+ tfrag, ttype, s->sum, sfrag, stype);
+ apr_file_printf(errfile, "total inodes was %" APR_OFF_T_FMT
+ ", total %sinodes now "
+ "%" APR_OFF_T_FMT APR_EOL_STR, s->ntotal, dryrun && deldirs ? "estimated "
+ : "", s->nodes);
+ apr_file_printf(
+ errfile,
+ "total entries was %" APR_OFF_T_FMT ", total entries now %" APR_OFF_T_FMT
+ APR_EOL_STR, s->etotal, s->entries);
+ apr_file_printf(
+ errfile,
+ "%" APR_OFF_T_FMT " entries deleted (%" APR_OFF_T_FMT " from future, %"
+ APR_OFF_T_FMT " expired, %" APR_OFF_T_FMT " fresh)" APR_EOL_STR,
+ (s->etotal - s->entries), s->dfuture, s->dexpired, s->dfresh);
+}
+
+/**
+ * Round the value up to the given threshold.
+ */
+static apr_size_t round_up(apr_size_t val, apr_off_t round)
+{
+ if (round > 1) {
+ return (apr_size_t)(((val + round - 1) / round) * round);
+ }
+ return val;
+}
+
+/*
+ * delete parent directories
+ */
+static void delete_parent(const char *path, const char *basename,
+ apr_off_t *nodes, apr_pool_t *pool)
+{
+ char *nextpath, *name;
+ apr_pool_t *p;
+
+ /* temp pool, otherwise lots of memory could be allocated */
+ apr_pool_create(&p, pool);
+ name = apr_pstrdup(p, basename);
+
+ /* If asked to delete dirs, do so now. We don't care if it fails.
+ * If it fails, it likely means there was something else there.
+ */
+ if (deldirs && !dryrun) {
+ const char *vary;
+ char *end = strrchr(name, '/');
+ while (end) {
+ *end = 0;
+
+ /* remove the directory */
+ nextpath = apr_pstrcat(p, path, "/", name, NULL);
+ if (!apr_dir_remove(nextpath, p)) {
+ (*nodes)--;
+
+ /* vary directory found? */
+ vary = strstr(name, CACHE_VDIR_SUFFIX);
+ if (vary && !vary[sizeof(CACHE_VDIR_SUFFIX) - 1]) {
+ nextpath = apr_pstrcat(p, path, "/", apr_pstrndup(p, name, vary
+ - name), NULL);
+ if (!apr_file_remove(nextpath, p)) {
+ (*nodes)--;
+ }
+ }
+
+ }
+ else {
+ break;
+ }
+ end = strrchr(name, '/');
+ }
+ }
+
+ apr_pool_destroy(p);
+
+ if (benice) {
+ if (++delcount >= DELETE_NICE) {
+ apr_sleep(NICE_DELAY);
+ delcount = 0;
+ }
+ }
+
+}
+
+/*
+ * delete a single file
+ */
+static void delete_file(char *path, char *basename, apr_off_t *nodes,
+ apr_pool_t *pool)
+{
+ char *nextpath;
+ apr_pool_t *p;
+
+ /* temp pool, otherwise lots of memory could be allocated */
+ apr_pool_create(&p, pool);
+ nextpath = apr_pstrcat(p, path, "/", basename, NULL);
+
+ if (dryrun) {
+ apr_finfo_t finfo;
+ if (!apr_stat(&finfo, nextpath, APR_FINFO_NLINK, p)) {
+ (*nodes)--;
+ }
+ }
+ else if (!apr_file_remove(nextpath, p)) {
+ (*nodes)--;
+ }
+
+ apr_pool_destroy(p);
+
+ if (benice) {
+ if (++delcount >= DELETE_NICE) {
+ apr_sleep(NICE_DELAY);
+ delcount = 0;
+ }
+ }
+
+ delete_parent(path, basename, nodes, pool);
+
+}
+
+/*
+ * delete cache file set
+ */
+static void delete_entry(char *path, char *basename, apr_off_t *nodes,
+ apr_pool_t *pool)
+{
+ char *nextpath;
+ apr_pool_t *p;
+
+ /* temp pool, otherwise lots of memory could be allocated */
+ apr_pool_create(&p, pool);
+
+ nextpath = apr_pstrcat(p, path, "/", basename, CACHE_HEADER_SUFFIX, NULL);
+ if (dryrun) {
+ apr_finfo_t finfo;
+ if (!apr_stat(&finfo, nextpath, APR_FINFO_NLINK, p)) {
+ (*nodes)--;
+ }
+ }
+ else if (!apr_file_remove(nextpath, p)) {
+ (*nodes)--;
+ }
+
+ nextpath = apr_pstrcat(p, path, "/", basename, CACHE_DATA_SUFFIX, NULL);
+ if (dryrun) {
+ apr_finfo_t finfo;
+ if (!apr_stat(&finfo, nextpath, APR_FINFO_NLINK, p)) {
+ (*nodes)--;
+ }
+ }
+ else if (!apr_file_remove(nextpath, p)) {
+ (*nodes)--;
+ }
+
+ apr_pool_destroy(p);
+
+ if (benice) {
+ delcount += 2;
+ if (delcount >= DELETE_NICE) {
+ apr_sleep(NICE_DELAY);
+ delcount = 0;
+ }
+ }
+
+ delete_parent(path, basename, nodes, pool);
+
+}
+
+/*
+ * list the cache directory tree
+ */
+static int list_urls(char *path, apr_pool_t *pool, apr_off_t round)
+{
+ apr_dir_t *dir;
+ apr_finfo_t info;
+ apr_size_t len;
+ apr_pool_t *p;
+ apr_file_t *fd;
+ const char *ext, *nextpath;
+ char *url;
+ apr_uint32_t format;
+ disk_cache_info_t disk_info;
+
+ apr_pool_create(&p, pool);
+
+ if (apr_dir_open(&dir, path, p) != APR_SUCCESS) {
+ return 1;
+ }
+
+ while (apr_dir_read(&info, APR_FINFO_TYPE, dir) == APR_SUCCESS && !interrupted) {
+
+ if (info.filetype == APR_DIR) {
+ if (!strcmp(info.name, ".") || !strcmp(info.name, "..")) {
+ continue;
+ }
+
+ if (list_urls(apr_pstrcat(p, path, "/", info.name, NULL), pool, round)) {
+ return 1;
+ }
+ }
+
+ else if (info.filetype == APR_REG) {
+
+ ext = strchr(info.name, '.');
+
+ if (ext && !strcasecmp(ext, CACHE_HEADER_SUFFIX)) {
+
+ nextpath = apr_pstrcat(p, path, "/", info.name, NULL);
+
+ if (apr_file_open(&fd, nextpath, APR_FOPEN_READ
+ | APR_FOPEN_BINARY, APR_OS_DEFAULT, p) == APR_SUCCESS) {
+ len = sizeof(format);
+ if (apr_file_read_full(fd, &format, len, &len)
+ == APR_SUCCESS) {
+ if (format == DISK_FORMAT_VERSION) {
+ apr_off_t offset = 0;
+
+ apr_file_seek(fd, APR_SET, &offset);
+
+ len = sizeof(disk_cache_info_t);
+
+ if (apr_file_read_full(fd, &disk_info, len, &len)
+ == APR_SUCCESS) {
+ len = disk_info.name_len;
+ url = apr_palloc(p, len + 1);
+ url[len] = 0;
+
+ if (apr_file_read_full(fd, url, len, &len)
+ == APR_SUCCESS) {
+
+ if (listextended) {
+ apr_finfo_t hinfo, dinfo;
+
+ /* stat the header file */
+ if (APR_SUCCESS != apr_file_info_get(
+ &hinfo, APR_FINFO_SIZE, fd)) {
+ /* ignore the file */
+ }
+ else if (disk_info.has_body && APR_SUCCESS
+ != apr_stat(
+ &dinfo,
+ apr_pstrcat(
+ p,
+ path,
+ "/",
+ apr_pstrndup(
+ p,
+ info.name,
+ ext
+ - info.name),
+ CACHE_DATA_SUFFIX,
+ NULL),
+ APR_FINFO_SIZE
+ | APR_FINFO_IDENT,
+ p)) {
+ /* ignore the file */
+ }
+ else if (disk_info.has_body && (dinfo.device
+ != disk_info.device
+ || dinfo.inode
+ != disk_info.inode)) {
+ /* ignore the file */
+ }
+ else {
+
+ apr_file_printf(
+ outfile,
+ "%s %" APR_SIZE_T_FMT
+ " %" APR_SIZE_T_FMT
+ " %d %" APR_SIZE_T_FMT
+ " %" APR_TIME_T_FMT
+ " %" APR_TIME_T_FMT
+ " %" APR_TIME_T_FMT
+ " %" APR_TIME_T_FMT
+ " %d %d\n",
+ url,
+ round_up((apr_size_t)hinfo.size, round),
+ round_up(
+ disk_info.has_body ? (apr_size_t)dinfo.size
+ : 0, round),
+ disk_info.status,
+ disk_info.entity_version,
+ disk_info.date,
+ disk_info.expire,
+ disk_info.request_time,
+ disk_info.response_time,
+ disk_info.has_body,
+ disk_info.header_only);
+ }
+ }
+ else {
+ apr_finfo_t dinfo;
+
+ /* stat the data file */
+ if (disk_info.has_body && APR_SUCCESS
+ != apr_stat(
+ &dinfo,
+ apr_pstrcat(
+ p,
+ path,
+ "/",
+ apr_pstrndup(
+ p,
+ info.name,
+ ext
+ - info.name),
+ CACHE_DATA_SUFFIX,
+ NULL),
+ APR_FINFO_SIZE
+ | APR_FINFO_IDENT,
+ p)) {
+ /* ignore the file */
+ }
+ else if (disk_info.has_body && (dinfo.device
+ != disk_info.device
+ || dinfo.inode
+ != disk_info.inode)) {
+ /* ignore the file */
+ }
+ else {
+ apr_file_printf(outfile, "%s\n",
+ url);
+ }
+ }
+ }
+
+ break;
+ }
+ }
+ }
+ apr_file_close(fd);
+
+ }
+ }
+ }
+
+ }
+
+ apr_dir_close(dir);
+
+ if (interrupted) {
+ return 1;
+ }
+
+ apr_pool_destroy(p);
+
+ if (benice) {
+ apr_sleep(NICE_DELAY);
+ }
+
+ if (interrupted) {
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * walk the cache directory tree
+ */
+static int process_dir(char *path, apr_pool_t *pool, apr_off_t *nodes)
+{
+ apr_dir_t *dir;
+ apr_pool_t *p;
+ apr_hash_t *h;
+ apr_hash_index_t *i;
+ apr_file_t *fd;
+ apr_status_t status;
+ apr_finfo_t info;
+ apr_size_t len;
+ apr_time_t current, deviation;
+ char *nextpath, *base, *ext;
+ DIRENTRY *d, *t, *n, anchor;
+ ENTRY *e;
+ int skip, retries;
+ disk_cache_info_t disk_info;
+
+ APR_RING_INIT(&anchor.link, _direntry, link);
+ apr_pool_create(&p, pool);
+ h = apr_hash_make(p);
+ fd = NULL;
+ deviation = MAXDEVIATION * APR_USEC_PER_SEC;
+
+ if (apr_dir_open(&dir, path, p) != APR_SUCCESS) {
+ return 1;
+ }
+
+ while (apr_dir_read(&info, 0, dir) == APR_SUCCESS && !interrupted) {
+ if (!strcmp(info.name, ".") || !strcmp(info.name, "..")) {
+ continue;
+ }
+ d = apr_pcalloc(p, sizeof(DIRENTRY));
+ d->basename = apr_pstrcat(p, path, "/", info.name, NULL);
+ APR_RING_INSERT_TAIL(&anchor.link, d, _direntry, link);
+ (*nodes)++;
+ }
+
+ apr_dir_close(dir);
+
+ if (interrupted) {
+ return 1;
+ }
+
+ skip = baselen + 1;
+
+ for (d = APR_RING_FIRST(&anchor.link);
+ !interrupted && d != APR_RING_SENTINEL(&anchor.link, _direntry, link);
+ d=n) {
+ n = APR_RING_NEXT(d, link);
+ base = strrchr(d->basename, '/');
+ if (!base++) {
+ base = d->basename;
+ }
+ ext = strchr(base, '.');
+
+ /* there may be temporary files which may be gone before
+ * processing, always skip these if not in realclean mode
+ */
+ if (!ext && !realclean) {
+ if (!strncasecmp(base, AP_TEMPFILE_BASE, AP_TEMPFILE_BASELEN)
+ && strlen(base) == AP_TEMPFILE_NAMELEN) {
+ continue;
+ }
+ }
+
+ /* this may look strange but apr_stat() may return an error which
+ * is system dependent and there may be transient failures,
+ * so just blindly retry for a short while
+ */
+ retries = STAT_ATTEMPTS;
+ status = APR_SUCCESS;
+ do {
+ if (status != APR_SUCCESS) {
+ apr_sleep(STAT_DELAY);
+ }
+ status = apr_stat(&info, d->basename, DIRINFO, p);
+ } while (status != APR_SUCCESS && !interrupted && --retries);
+
+ /* what may happen here is that apache did create a file which
+ * we did detect but then does delete the file before we can
+ * get file information, so if we don't get any file information
+ * we will ignore the file in this case
+ */
+ if (status != APR_SUCCESS) {
+ if (!realclean && !interrupted) {
+ continue;
+ }
+ return 1;
+ }
+
+ if (info.filetype == APR_DIR) {
+ char *dirpath = apr_pstrdup(p, d->basename);
+
+ if (process_dir(d->basename, pool, nodes)) {
+ return 1;
+ }
+ /* When given the -t option htcacheclean does not
+ * delete directories that are already empty, so we'll do that here
+ * since process_dir checks all the directories.
+ * If it fails, it likely means there was something else there.
+ */
+ if (deldirs && !dryrun) {
+ apr_dir_remove(dirpath, p);
+ }
+ continue;
+ }
+
+ if (info.filetype != APR_REG) {
+ continue;
+ }
+
+ if (!ext) {
+ if (!strncasecmp(base, AP_TEMPFILE_BASE, AP_TEMPFILE_BASELEN)
+ && strlen(base) == AP_TEMPFILE_NAMELEN) {
+ d->basename += skip;
+ d->type = TEMP;
+ d->dsize = info.size;
+ apr_hash_set(h, d->basename, APR_HASH_KEY_STRING, d);
+ }
+ continue;
+ }
+
+ if (!strcasecmp(ext, CACHE_HEADER_SUFFIX)) {
+ *ext = '\0';
+ d->basename += skip;
+ /* if a user manually creates a '.header' file */
+ if (d->basename[0] == '\0') {
+ continue;
+ }
+ t = apr_hash_get(h, d->basename, APR_HASH_KEY_STRING);
+ if (t) {
+ d = t;
+ }
+ d->type |= HEADER;
+ d->htime = info.mtime;
+ d->hsize = info.size;
+ apr_hash_set(h, d->basename, APR_HASH_KEY_STRING, d);
+ continue;
+ }
+
+ if (!strcasecmp(ext, CACHE_DATA_SUFFIX)) {
+ *ext = '\0';
+ d->basename += skip;
+ /* if a user manually creates a '.data' file */
+ if (d->basename[0] == '\0') {
+ continue;
+ }
+ t = apr_hash_get(h, d->basename, APR_HASH_KEY_STRING);
+ if (t) {
+ d = t;
+ }
+ d->type |= DATA;
+ d->dtime = info.mtime;
+ d->dsize = info.size;
+ apr_hash_set(h, d->basename, APR_HASH_KEY_STRING, d);
+ }
+ }
+
+ if (interrupted) {
+ return 1;
+ }
+
+ path[baselen] = '\0';
+
+ for (i = apr_hash_first(p, h); i && !interrupted; i = apr_hash_next(i)) {
+ void *hvalue;
+ apr_uint32_t format;
+
+ apr_hash_this(i, NULL, NULL, &hvalue);
+ d = hvalue;
+
+ switch(d->type) {
+ case HEADERDATA:
+ nextpath = apr_pstrcat(p, path, "/", d->basename,
+ CACHE_HEADER_SUFFIX, NULL);
+ if (apr_file_open(&fd, nextpath, APR_FOPEN_READ | APR_FOPEN_BINARY,
+ APR_OS_DEFAULT, p) == APR_SUCCESS) {
+ len = sizeof(format);
+ if (apr_file_read_full(fd, &format, len,
+ &len) == APR_SUCCESS) {
+ if (format == DISK_FORMAT_VERSION) {
+ apr_off_t offset = 0;
+
+ apr_file_seek(fd, APR_SET, &offset);
+
+ len = sizeof(disk_cache_info_t);
+
+ if (apr_file_read_full(fd, &disk_info, len,
+ &len) == APR_SUCCESS) {
+ apr_file_close(fd);
+ e = apr_palloc(pool, sizeof(ENTRY));
+ APR_RING_INSERT_TAIL(&root.link, e, _entry, link);
+ e->expire = disk_info.expire;
+ e->response_time = disk_info.response_time;
+ e->htime = d->htime;
+ e->dtime = d->dtime;
+ e->hsize = d->hsize;
+ e->dsize = d->dsize;
+ e->basename = apr_pstrdup(pool, d->basename);
+ if (!disk_info.has_body) {
+ delete_file(path, apr_pstrcat(p, path, "/",
+ d->basename, CACHE_DATA_SUFFIX, NULL),
+ nodes, p);
+ }
+ break;
+ }
+ else {
+ apr_file_close(fd);
+ }
+ }
+ else if (format == VARY_FORMAT_VERSION) {
+ apr_finfo_t finfo;
+
+ /* This must be a URL that added Vary headers later,
+ * so kill the orphaned .data file
+ */
+ apr_file_close(fd);
+
+ if (apr_stat(&finfo, apr_pstrcat(p, nextpath,
+ CACHE_VDIR_SUFFIX, NULL), APR_FINFO_TYPE, p)
+ || finfo.filetype != APR_DIR) {
+ delete_entry(path, d->basename, nodes, p);
+ }
+ else {
+ delete_file(path, apr_pstrcat(p, path, "/",
+ d->basename, CACHE_DATA_SUFFIX, NULL),
+ nodes, p);
+ }
+ break;
+ }
+ else {
+ /* We didn't recognise the format, kill the files */
+ apr_file_close(fd);
+ delete_entry(path, d->basename, nodes, p);
+ break;
+ }
+ }
+ else {
+ apr_file_close(fd);
+ }
+
+ }
+ /* we have a somehow unreadable headers file which is associated
+ * with a data file. this may be caused by apache currently
+ * rewriting the headers file. thus we may delete the file set
+ * either in realclean mode or if the headers file modification
+ * timestamp is not within a specified positive or negative offset
+ * to the current time.
+ */
+ current = apr_time_now();
+ if (realclean || d->htime < current - deviation
+ || d->htime > current + deviation) {
+ delete_entry(path, d->basename, nodes, p);
+ unsolicited += d->hsize;
+ unsolicited += d->dsize;
+ }
+ break;
+
+ /* single data and header files may be deleted either in realclean
+ * mode or if their modification timestamp is not within a
+ * specified positive or negative offset to the current time.
+ * this handling is necessary due to possible race conditions
+ * between apache and this process
+ */
+ case HEADER:
+ current = apr_time_now();
+ nextpath = apr_pstrcat(p, path, "/", d->basename,
+ CACHE_HEADER_SUFFIX, NULL);
+ if (apr_file_open(&fd, nextpath, APR_FOPEN_READ | APR_FOPEN_BINARY,
+ APR_OS_DEFAULT, p) == APR_SUCCESS) {
+ len = sizeof(format);
+ if (apr_file_read_full(fd, &format, len,
+ &len) == APR_SUCCESS) {
+ if (format == VARY_FORMAT_VERSION) {
+ apr_time_t expires;
+
+ len = sizeof(expires);
+
+ if (apr_file_read_full(fd, &expires, len,
+ &len) == APR_SUCCESS) {
+ apr_finfo_t finfo;
+
+ apr_file_close(fd);
+
+ if (apr_stat(&finfo, apr_pstrcat(p, nextpath,
+ CACHE_VDIR_SUFFIX, NULL), APR_FINFO_TYPE, p)
+ || finfo.filetype != APR_DIR) {
+ delete_entry(path, d->basename, nodes, p);
+ }
+ else if (expires < current) {
+ delete_entry(path, d->basename, nodes, p);
+ }
+
+ break;
+ }
+ }
+ else if (format == DISK_FORMAT_VERSION) {
+ apr_off_t offset = 0;
+
+ apr_file_seek(fd, APR_SET, &offset);
+
+ len = sizeof(disk_cache_info_t);
+
+ if (apr_file_read_full(fd, &disk_info, len,
+ &len) == APR_SUCCESS) {
+ apr_file_close(fd);
+ e = apr_palloc(pool, sizeof(ENTRY));
+ APR_RING_INSERT_TAIL(&root.link, e, _entry, link);
+ e->expire = disk_info.expire;
+ e->response_time = disk_info.response_time;
+ e->htime = d->htime;
+ e->dtime = d->dtime;
+ e->hsize = d->hsize;
+ e->dsize = d->dsize;
+ e->basename = apr_pstrdup(pool, d->basename);
+ break;
+ }
+ else {
+ apr_file_close(fd);
+ }
+ }
+ else {
+ apr_file_close(fd);
+ delete_entry(path, d->basename, nodes, p);
+ break;
+ }
+ }
+ else {
+ apr_file_close(fd);
+ }
+ }
+
+ if (realclean || d->htime < current - deviation
+ || d->htime > current + deviation) {
+ delete_entry(path, d->basename, nodes, p);
+ unsolicited += d->hsize;
+ }
+ break;
+
+ case DATA:
+ current = apr_time_now();
+ if (realclean || d->dtime < current - deviation
+ || d->dtime > current + deviation) {
+ delete_entry(path, d->basename, nodes, p);
+ unsolicited += d->dsize;
+ }
+ break;
+
+ /* temp files may only be deleted in realclean mode which
+ * is asserted above if a tempfile is in the hash array
+ */
+ case TEMP:
+ delete_file(path, d->basename, nodes, p);
+ unsolicited += d->dsize;
+ break;
+ }
+ }
+
+ if (interrupted) {
+ return 1;
+ }
+
+ apr_pool_destroy(p);
+
+ if (benice) {
+ apr_sleep(NICE_DELAY);
+ }
+
+ if (interrupted) {
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * purge cache entries
+ */
+static void purge(char *path, apr_pool_t *pool, apr_off_t max,
+ apr_off_t inodes, apr_off_t nodes, apr_off_t round)
+{
+ ENTRY *e, *n, *oldest;
+
+ struct stats s;
+ s.sum = 0;
+ s.entries = 0;
+ s.dfuture = 0;
+ s.dexpired = 0;
+ s.dfresh = 0;
+ s.max = max;
+ s.nodes = nodes;
+ s.inodes = inodes;
+ s.ntotal = nodes;
+
+ for (e = APR_RING_FIRST(&root.link);
+ e != APR_RING_SENTINEL(&root.link, _entry, link);
+ e = APR_RING_NEXT(e, link)) {
+ s.sum += round_up((apr_size_t)e->hsize, round);
+ s.sum += round_up((apr_size_t)e->dsize, round);
+ s.entries++;
+ }
+
+ s.total = s.sum;
+ s.etotal = s.entries;
+
+ if ((!s.max || s.sum <= s.max) && (!s.inodes || s.nodes <= s.inodes)) {
+ printstats(path, &s);
+ return;
+ }
+
+ /* process all entries with a timestamp in the future, this may
+ * happen if a wrong system time is corrected
+ */
+
+ for (e = APR_RING_FIRST(&root.link);
+ e != APR_RING_SENTINEL(&root.link, _entry, link) && !interrupted;) {
+ n = APR_RING_NEXT(e, link);
+ if (e->response_time > now || e->htime > now || e->dtime > now) {
+ delete_entry(path, e->basename, &s.nodes, pool);
+ s.sum -= round_up((apr_size_t)e->hsize, round);
+ s.sum -= round_up((apr_size_t)e->dsize, round);
+ s.entries--;
+ s.dfuture++;
+ APR_RING_REMOVE(e, link);
+ if ((!s.max || s.sum <= s.max) && (!s.inodes || s.nodes <= s.inodes)) {
+ if (!interrupted) {
+ printstats(path, &s);
+ }
+ return;
+ }
+ }
+ e = n;
+ }
+
+ if (interrupted) {
+ return;
+ }
+
+ /* process all entries which are expired */
+ for (e = APR_RING_FIRST(&root.link);
+ e != APR_RING_SENTINEL(&root.link, _entry, link) && !interrupted;) {
+ n = APR_RING_NEXT(e, link);
+ if (e->expire != APR_DATE_BAD && e->expire < now) {
+ delete_entry(path, e->basename, &s.nodes, pool);
+ s.sum -= round_up((apr_size_t)e->hsize, round);
+ s.sum -= round_up((apr_size_t)e->dsize, round);
+ s.entries--;
+ s.dexpired++;
+ APR_RING_REMOVE(e, link);
+ if ((!s.max || s.sum <= s.max) && (!s.inodes || s.nodes <= s.inodes)) {
+ if (!interrupted) {
+ printstats(path, &s);
+ }
+ return;
+ }
+ }
+ e = n;
+ }
+
+ if (interrupted) {
+ return;
+ }
+
+ /* process remaining entries oldest to newest, the check for an empty
+ * ring actually isn't necessary except when the compiler does
+ * corrupt 64bit arithmetics which happened to me once, so better safe
+ * than sorry
+ */
+ while (!((!s.max || s.sum <= s.max) && (!s.inodes || s.nodes <= s.inodes))
+ && !interrupted && !APR_RING_EMPTY(&root.link, _entry, link)) {
+ oldest = APR_RING_FIRST(&root.link);
+
+ for (e = APR_RING_NEXT(oldest, link);
+ e != APR_RING_SENTINEL(&root.link, _entry, link);
+ e = APR_RING_NEXT(e, link)) {
+ if (e->dtime < oldest->dtime) {
+ oldest = e;
+ }
+ }
+
+ delete_entry(path, oldest->basename, &s.nodes, pool);
+ s.sum -= round_up((apr_size_t)oldest->hsize, round);
+ s.sum -= round_up((apr_size_t)oldest->dsize, round);
+ s.entries--;
+ s.dfresh++;
+ APR_RING_REMOVE(oldest, link);
+ }
+
+ if (!interrupted) {
+ printstats(path, &s);
+ }
+}
+
+static apr_status_t remove_directory(apr_pool_t *pool, const char *dir)
+{
+ apr_status_t rv;
+ apr_dir_t *dirp;
+ apr_finfo_t dirent;
+
+ rv = apr_dir_open(&dirp, dir, pool);
+ if (APR_STATUS_IS_ENOENT(rv)) {
+ return rv;
+ }
+ if (rv != APR_SUCCESS) {
+ apr_file_printf(errfile, "Could not open directory %s: %pm" APR_EOL_STR,
+ dir, &rv);
+ return rv;
+ }
+
+ while (apr_dir_read(&dirent, APR_FINFO_DIRENT | APR_FINFO_TYPE, dirp)
+ == APR_SUCCESS) {
+ if (dirent.filetype == APR_DIR) {
+ if (strcmp(dirent.name, ".") && strcmp(dirent.name, "..")) {
+ rv = remove_directory(pool, apr_pstrcat(pool, dir, "/",
+ dirent.name, NULL));
+ /* tolerate the directory not being empty, the cache may have
+ * attempted to recreate the directory in the mean time.
+ */
+ if (APR_SUCCESS != rv && APR_ENOTEMPTY != rv) {
+ break;
+ }
+ }
+ } else {
+ const char *file = apr_pstrcat(pool, dir, "/", dirent.name, NULL);
+ rv = apr_file_remove(file, pool);
+ if (APR_SUCCESS != rv) {
+ apr_file_printf(errfile,
+ "Could not remove file '%s': %pm" APR_EOL_STR, file,
+ &rv);
+ break;
+ }
+ }
+ }
+
+ apr_dir_close(dirp);
+
+ if (rv == APR_SUCCESS) {
+ rv = apr_dir_remove(dir, pool);
+ if (APR_ENOTEMPTY == rv) {
+ rv = APR_SUCCESS;
+ }
+ if (rv != APR_SUCCESS) {
+ apr_file_printf(errfile, "Could not remove directory %s: %pm" APR_EOL_STR,
+ dir, &rv);
+ }
+ }
+
+ return rv;
+}
+
+static apr_status_t find_directory(apr_pool_t *pool, const char *base,
+ const char *rest)
+{
+ apr_status_t rv;
+ apr_dir_t *dirp;
+ apr_finfo_t dirent;
+ int found = 0, files = 0;
+ const char *header = apr_pstrcat(pool, rest, CACHE_HEADER_SUFFIX, NULL);
+ const char *data = apr_pstrcat(pool, rest, CACHE_DATA_SUFFIX, NULL);
+ const char *vdir = apr_pstrcat(pool, rest, CACHE_HEADER_SUFFIX,
+ CACHE_VDIR_SUFFIX, NULL);
+ const char *dirname = NULL;
+
+ rv = apr_dir_open(&dirp, base, pool);
+ if (rv != APR_SUCCESS) {
+ apr_file_printf(errfile, "Could not open directory %s: %pm" APR_EOL_STR,
+ base, &rv);
+ return rv;
+ }
+
+ rv = APR_ENOENT;
+
+ while (apr_dir_read(&dirent, APR_FINFO_DIRENT | APR_FINFO_TYPE, dirp)
+ == APR_SUCCESS) {
+ int len = strlen(dirent.name);
+ int restlen = strlen(rest);
+ if (dirent.filetype == APR_DIR && !strncmp(rest, dirent.name, len)) {
+ dirname = apr_pstrcat(pool, base, "/", dirent.name, NULL);
+ rv = find_directory(pool, dirname, rest + (len < restlen ? len
+ : restlen));
+ if (APR_SUCCESS == rv) {
+ found = 1;
+ }
+ }
+ if (dirent.filetype == APR_DIR) {
+ if (!strcmp(dirent.name, vdir)) {
+ files = 1;
+ }
+ }
+ if (dirent.filetype == APR_REG) {
+ if (!strcmp(dirent.name, header) || !strcmp(dirent.name, data)) {
+ files = 1;
+ }
+ }
+ }
+
+ apr_dir_close(dirp);
+
+ if (files) {
+ rv = APR_SUCCESS;
+ if (!dryrun) {
+ const char *remove;
+ apr_status_t status;
+
+ remove = apr_pstrcat(pool, base, "/", header, NULL);
+ status = apr_file_remove(remove, pool);
+ if (status != APR_SUCCESS && !APR_STATUS_IS_ENOENT(status)) {
+ apr_file_printf(errfile, "Could not remove file %s: %pm" APR_EOL_STR,
+ remove, &status);
+ rv = status;
+ }
+
+ remove = apr_pstrcat(pool, base, "/", data, NULL);
+ status = apr_file_remove(remove, pool);
+ if (status != APR_SUCCESS && !APR_STATUS_IS_ENOENT(status)) {
+ apr_file_printf(errfile, "Could not remove file %s: %pm" APR_EOL_STR,
+ remove, &status);
+ rv = status;
+ }
+
+ status = remove_directory(pool, apr_pstrcat(pool, base, "/", vdir, NULL));
+ if (status != APR_SUCCESS && !APR_STATUS_IS_ENOENT(status)) {
+ rv = status;
+ }
+ }
+ }
+
+ /* If asked to delete dirs, do so now. We don't care if it fails.
+ * If it fails, it likely means there was something else there.
+ */
+ if (dirname && deldirs && !dryrun) {
+ apr_dir_remove(dirname, pool);
+ }
+
+ if (found) {
+ return APR_SUCCESS;
+ }
+
+ return rv;
+}
+
+/**
+ * Delete a specific URL from the cache.
+ */
+static apr_status_t delete_url(apr_pool_t *pool, const char *proxypath, const char *url)
+{
+ apr_md5_ctx_t context;
+ unsigned char digest[16];
+ char tmp[23];
+ int i, k;
+ unsigned int x;
+ static const char enc_table[64] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_@";
+
+ apr_md5_init(&context);
+ apr_md5_update(&context, (const unsigned char *) url, strlen(url));
+ apr_md5_final(digest, &context);
+
+ /* encode 128 bits as 22 characters, using a modified uuencoding
+ * the encoding is 3 bytes -> 4 characters* i.e. 128 bits is
+ * 5 x 3 bytes + 1 byte -> 5 * 4 characters + 2 characters
+ */
+ for (i = 0, k = 0; i < 15; i += 3) {
+ x = (digest[i] << 16) | (digest[i + 1] << 8) | digest[i + 2];
+ tmp[k++] = enc_table[x >> 18];
+ tmp[k++] = enc_table[(x >> 12) & 0x3f];
+ tmp[k++] = enc_table[(x >> 6) & 0x3f];
+ tmp[k++] = enc_table[x & 0x3f];
+ }
+
+ /* one byte left */
+ x = digest[15];
+ tmp[k++] = enc_table[x >> 2]; /* use up 6 bits */
+ tmp[k++] = enc_table[(x << 4) & 0x3f];
+ tmp[k] = 0;
+
+ /* automatically find the directory levels */
+ return find_directory(pool, proxypath, tmp);
+}
+
+/*
+ * usage info
+ */
+#define NL APR_EOL_STR
+static void usage(const char *error)
+{
+ if (error) {
+ apr_file_printf(errfile, "%s error: %s\n", shortname, error);
+ }
+ apr_file_printf(errfile,
+ "%s -- program for cleaning the disk cache." NL
+ "Usage: %s [-Dvtrn] -pPATH [-lLIMIT] [-LLIMIT] [-PPIDFILE]" NL
+ " %s [-nti] -dINTERVAL -pPATH [-lLIMIT] [-LLIMIT] [-PPIDFILE]" NL
+ " %s [-Dvt] -pPATH URL ..." NL
+ NL
+ "Options:" NL
+ " -d Daemonize and repeat cache cleaning every INTERVAL minutes." NL
+ " This option is mutually exclusive with the -D, -v and -r" NL
+ " options." NL
+ NL
+ " -D Do a dry run and don't delete anything. This option is mutually" NL
+ " exclusive with the -d option. When doing a dry run and deleting" NL
+ " directories with -t, the inodes reported deleted in the stats" NL
+ " cannot take into account the directories deleted, and will be" NL
+ " marked as an estimate." NL
+ NL
+ " -v Be verbose and print statistics. This option is mutually" NL
+ " exclusive with the -d option." NL
+ NL
+ " -r Clean thoroughly. This assumes that the Apache web server is " NL
+ " not running. This option is mutually exclusive with the -d" NL
+ " option and implies -t." NL
+ NL
+ " -n Be nice. This causes slower processing in favour of other" NL
+ " processes." NL
+ NL
+ " -t Delete all empty directories. By default only cache files are" NL
+ " removed, however with some configurations the large number of" NL
+ " directories created may require attention." NL
+ NL
+ " -p Specify PATH as the root directory of the disk cache." NL
+ NL
+ " -P Specify PIDFILE as the file to write the pid to." NL
+ NL
+ " -R Specify amount to round sizes up to." NL
+ NL
+ " -l Specify LIMIT as the total disk cache size limit. Attach 'K'," NL
+ " 'M' or 'G' to the number for specifying KBytes, MBytes or" NL
+ " GBytes." NL
+ NL
+ " -L Specify LIMIT as the total disk cache inode limit. 'K', 'M' or" NL
+ " 'G' suffix can also be used." NL
+ NL
+ " -i Be intelligent and run only when there was a modification of" NL
+ " the disk cache. This option is only possible together with the" NL
+ " -d option." NL
+ NL
+ " -a List the URLs currently stored in the cache. Variants of the" NL
+ " same URL will be listed once for each variant." NL
+ NL
+ " -A List the URLs currently stored in the cache, along with their" NL
+ " attributes in the following order: url, header size, body size," NL
+ " status, entity version, date, expiry, request time," NL
+ " response time, body present, head request." NL
+ NL
+ "Should an URL be provided on the command line, the URL will be" NL
+ "deleted from the cache. A reverse proxied URL is made up as follows:" NL
+ "http://<hostname>:<port><path>?[query]. So, for the path \"/\" on the" NL
+ "host \"localhost\" and port 80, the URL to delete becomes" NL
+ "\"http://localhost:80/?\". Note the '?' in the URL must always be" NL
+ "specified explicitly, whether a query string is present or not." NL,
+ shortname,
+ shortname,
+ shortname,
+ shortname
+ );
+
+ exit(1);
+}
+#undef NL
+
+static void usage_repeated_arg(apr_pool_t *pool, char option)
+{
+ usage(apr_psprintf(pool,
+ "The option '%c' cannot be specified more than once",
+ option));
+}
+
+static void log_pid(apr_pool_t *pool, const char *pidfilename, apr_file_t **pidfile)
+{
+ apr_status_t status;
+ pid_t mypid = getpid();
+
+ if (APR_SUCCESS == (status = apr_file_open(pidfile, pidfilename,
+ APR_FOPEN_WRITE | APR_FOPEN_CREATE | APR_FOPEN_TRUNCATE |
+ APR_FOPEN_DELONCLOSE, APR_FPROT_UREAD | APR_FPROT_UWRITE |
+ APR_FPROT_GREAD | APR_FPROT_WREAD, pool))) {
+ apr_file_printf(*pidfile, "%" APR_PID_T_FMT APR_EOL_STR, mypid);
+ }
+ else {
+ if (errfile) {
+ apr_file_printf(errfile,
+ "Could not write the pid file '%s': %pm" APR_EOL_STR,
+ pidfilename, &status);
+ }
+ exit(1);
+ }
+}
+
+/*
+ * main
+ */
+int main(int argc, const char * const argv[])
+{
+ apr_off_t max, inodes, round;
+ apr_time_t current, repeat, delay, previous;
+ apr_status_t status;
+ apr_pool_t *pool, *instance;
+ apr_getopt_t *o;
+ apr_finfo_t info;
+ apr_file_t *pidfile;
+ int retries, isdaemon, limit_found, inodes_found, intelligent, dowork;
+ char opt;
+ const char *arg;
+ char *proxypath, *path, *pidfilename;
+
+ interrupted = 0;
+ repeat = 0;
+ isdaemon = 0;
+ dryrun = 0;
+ limit_found = 0;
+ inodes_found = 0;
+ max = 0;
+ inodes = 0;
+ round = 0;
+ verbose = 0;
+ realclean = 0;
+ benice = 0;
+ deldirs = 0;
+ intelligent = 0;
+ previous = 0; /* avoid compiler warning */
+ proxypath = NULL;
+ pidfilename = NULL;
+
+ if (apr_app_initialize(&argc, &argv, NULL) != APR_SUCCESS) {
+ return 1;
+ }
+ atexit(apr_terminate);
+
+ if (argc) {
+ shortname = apr_filepath_name_get(argv[0]);
+ }
+
+ if (apr_pool_create(&pool, NULL) != APR_SUCCESS) {
+ return 1;
+ }
+ apr_pool_abort_set(oom, pool);
+ apr_file_open_stderr(&errfile, pool);
+ apr_file_open_stdout(&outfile, pool);
+ apr_signal(SIGINT, setterm);
+ apr_signal(SIGTERM, setterm);
+
+ apr_getopt_init(&o, pool, argc, argv);
+
+ while (1) {
+ status = apr_getopt(o, "iDnvrtd:l:L:p:P:R:aA", &opt, &arg);
+ if (status == APR_EOF) {
+ break;
+ }
+ else if (status != APR_SUCCESS) {
+ usage(NULL);
+ }
+ else {
+ char *end;
+ apr_status_t rv;
+ switch (opt) {
+ case 'i':
+ if (intelligent) {
+ usage_repeated_arg(pool, opt);
+ }
+ intelligent = 1;
+ break;
+
+ case 'D':
+ if (dryrun) {
+ usage_repeated_arg(pool, opt);
+ }
+ dryrun = 1;
+ break;
+
+ case 'n':
+ if (benice) {
+ usage_repeated_arg(pool, opt);
+ }
+ benice = 1;
+ break;
+
+ case 't':
+ if (deldirs) {
+ usage_repeated_arg(pool, opt);
+ }
+ deldirs = 1;
+ break;
+
+ case 'v':
+ if (verbose) {
+ usage_repeated_arg(pool, opt);
+ }
+ verbose = 1;
+ break;
+
+ case 'r':
+ if (realclean) {
+ usage_repeated_arg(pool, opt);
+ }
+ realclean = 1;
+ deldirs = 1;
+ break;
+
+ case 'd':
+ if (isdaemon) {
+ usage_repeated_arg(pool, opt);
+ }
+ isdaemon = 1;
+ repeat = apr_atoi64(arg);
+ repeat *= SECS_PER_MIN;
+ repeat *= APR_USEC_PER_SEC;
+ break;
+
+ case 'l':
+ if (limit_found) {
+ usage_repeated_arg(pool, opt);
+ }
+ limit_found = 1;
+
+ do {
+ rv = apr_strtoff(&max, arg, &end, 10);
+ if (rv == APR_SUCCESS) {
+ if ((*end == 'K' || *end == 'k') && !end[1]) {
+ max *= KBYTE;
+ }
+ else if ((*end == 'M' || *end == 'm') && !end[1]) {
+ max *= MBYTE;
+ }
+ else if ((*end == 'G' || *end == 'g') && !end[1]) {
+ max *= GBYTE;
+ }
+ else if (*end && /* neither empty nor [Bb] */
+ ((*end != 'B' && *end != 'b') || end[1])) {
+ rv = APR_EGENERAL;
+ }
+ }
+ if (rv != APR_SUCCESS) {
+ usage(apr_psprintf(pool, "Invalid limit: %s"
+ APR_EOL_STR APR_EOL_STR, arg));
+ }
+ } while (0);
+ break;
+
+ case 'L':
+ if (inodes_found) {
+ usage_repeated_arg(pool, opt);
+ }
+ inodes_found = 1;
+
+ do {
+ rv = apr_strtoff(&inodes, arg, &end, 10);
+ if (rv == APR_SUCCESS) {
+ if ((*end == 'K' || *end == 'k') && !end[1]) {
+ inodes *= KBYTE;
+ }
+ else if ((*end == 'M' || *end == 'm') && !end[1]) {
+ inodes *= MBYTE;
+ }
+ else if ((*end == 'G' || *end == 'g') && !end[1]) {
+ inodes *= GBYTE;
+ }
+ else if (*end && /* neither empty nor [Bb] */
+ ((*end != 'B' && *end != 'b') || end[1])) {
+ rv = APR_EGENERAL;
+ }
+ }
+ if (rv != APR_SUCCESS) {
+ usage(apr_psprintf(pool, "Invalid limit: %s"
+ APR_EOL_STR APR_EOL_STR, arg));
+ }
+ } while (0);
+ break;
+
+ case 'a':
+ if (listurls) {
+ usage_repeated_arg(pool, opt);
+ }
+ listurls = 1;
+ break;
+
+ case 'A':
+ if (listurls) {
+ usage_repeated_arg(pool, opt);
+ }
+ listurls = 1;
+ listextended = 1;
+ break;
+
+ case 'p':
+ if (proxypath) {
+ usage_repeated_arg(pool, opt);
+ }
+ proxypath = apr_pstrdup(pool, arg);
+ if ((status = apr_filepath_set(proxypath, pool)) != APR_SUCCESS) {
+ usage(apr_psprintf(pool, "Could not set filepath to '%s': %pm",
+ proxypath, &status));
+ }
+ break;
+
+ case 'P':
+ if (pidfilename) {
+ usage_repeated_arg(pool, opt);
+ }
+ pidfilename = apr_pstrdup(pool, arg);
+ break;
+
+ case 'R':
+ if (round) {
+ usage_repeated_arg(pool, opt);
+ }
+ rv = apr_strtoff(&round, arg, &end, 10);
+ if (rv == APR_SUCCESS) {
+ if (*end) {
+ usage(apr_psprintf(pool, "Invalid round value: %s"
+ APR_EOL_STR APR_EOL_STR, arg));
+ }
+ else if (round < 0) {
+ usage(apr_psprintf(pool, "Round value must be positive: %s"
+ APR_EOL_STR APR_EOL_STR, arg));
+ }
+ }
+ if (rv != APR_SUCCESS) {
+ usage(apr_psprintf(pool, "Invalid round value: %s"
+ APR_EOL_STR APR_EOL_STR, arg));
+ }
+ break;
+
+ } /* switch */
+ } /* else */
+ } /* while */
+
+ if (argc <= 1) {
+ usage(NULL);
+ }
+
+ if (!proxypath) {
+ usage("Option -p must be specified");
+ }
+
+ if (o->ind < argc) {
+ int deleted = 0;
+ int error = 0;
+ if (isdaemon) {
+ usage("Option -d cannot be used with URL arguments, aborting");
+ }
+ if (intelligent) {
+ usage("Option -i cannot be used with URL arguments, aborting");
+ }
+ if (limit_found) {
+ usage("Option -l and -L cannot be used with URL arguments, aborting");
+ }
+ while (o->ind < argc) {
+ status = delete_url(pool, proxypath, argv[o->ind]);
+ if (APR_SUCCESS == status) {
+ if (verbose) {
+ apr_file_printf(errfile, "Removed: %s" APR_EOL_STR,
+ argv[o->ind]);
+ }
+ deleted = 1;
+ }
+ else if (APR_ENOENT == status) {
+ if (verbose) {
+ apr_file_printf(errfile, "Not cached: %s" APR_EOL_STR,
+ argv[o->ind]);
+ }
+ }
+ else {
+ if (verbose) {
+ apr_file_printf(errfile, "Error while removed: %s" APR_EOL_STR,
+ argv[o->ind]);
+ }
+ error = 1;
+ }
+ o->ind++;
+ }
+ return error ? 1 : deleted ? 0 : 2;
+ }
+
+ if (isdaemon && repeat <= 0) {
+ usage("Option -d must be greater than zero");
+ }
+
+ if (isdaemon && (verbose || realclean || dryrun || listurls)) {
+ usage("Option -d cannot be used with -v, -r, -L or -D");
+ }
+
+ if (!isdaemon && intelligent) {
+ usage("Option -i cannot be used without -d");
+ }
+
+ if (!listurls && max <= 0 && inodes <= 0) {
+ usage("At least one of option -l or -L must be greater than zero");
+ }
+
+ if (apr_filepath_get(&path, 0, pool) != APR_SUCCESS) {
+ usage(apr_psprintf(pool, "Could not get the filepath: %pm", &status));
+ }
+ baselen = strlen(path);
+
+ if (pidfilename) {
+ log_pid(pool, pidfilename, &pidfile); /* before daemonizing, so we
+ * can report errors
+ */
+ }
+
+ if (listurls) {
+ list_urls(path, pool, round);
+ return (interrupted != 0);
+ }
+
+#ifndef DEBUG
+ if (isdaemon) {
+ apr_file_close(errfile);
+ errfile = NULL;
+ if (pidfilename) {
+ apr_file_close(pidfile); /* delete original pidfile only in parent */
+ }
+ apr_proc_detach(APR_PROC_DETACH_DAEMONIZE);
+ if (pidfilename) {
+ log_pid(pool, pidfilename, &pidfile);
+ }
+ }
+#endif
+
+ do {
+ apr_pool_create(&instance, pool);
+
+ now = apr_time_now();
+ APR_RING_INIT(&root.link, _entry, link);
+ delcount = 0;
+ unsolicited = 0;
+ dowork = 0;
+
+ switch (intelligent) {
+ case 0:
+ dowork = 1;
+ break;
+
+ case 1:
+ retries = STAT_ATTEMPTS;
+ status = APR_SUCCESS;
+
+ do {
+ if (status != APR_SUCCESS) {
+ apr_sleep(STAT_DELAY);
+ }
+ status = apr_stat(&info, path, APR_FINFO_MTIME, instance);
+ } while (status != APR_SUCCESS && !interrupted && --retries);
+
+ if (status == APR_SUCCESS) {
+ previous = info.mtime;
+ intelligent = 2;
+ }
+ dowork = 1;
+ break;
+
+ case 2:
+ retries = STAT_ATTEMPTS;
+ status = APR_SUCCESS;
+
+ do {
+ if (status != APR_SUCCESS) {
+ apr_sleep(STAT_DELAY);
+ }
+ status = apr_stat(&info, path, APR_FINFO_MTIME, instance);
+ } while (status != APR_SUCCESS && !interrupted && --retries);
+
+ if (status == APR_SUCCESS) {
+ if (previous != info.mtime) {
+ dowork = 1;
+ }
+ previous = info.mtime;
+ break;
+ }
+ intelligent = 1;
+ dowork = 1;
+ break;
+ }
+
+ if (dowork && !interrupted) {
+ apr_off_t nodes = 0;
+ if (!process_dir(path, instance, &nodes) && !interrupted) {
+ purge(path, instance, max, inodes, nodes, round);
+ }
+ else if (!isdaemon && !interrupted) {
+ apr_file_printf(errfile, "An error occurred, cache cleaning "
+ "aborted." APR_EOL_STR);
+ return 1;
+ }
+
+ if (intelligent && !interrupted) {
+ retries = STAT_ATTEMPTS;
+ status = APR_SUCCESS;
+ do {
+ if (status != APR_SUCCESS) {
+ apr_sleep(STAT_DELAY);
+ }
+ status = apr_stat(&info, path, APR_FINFO_MTIME, instance);
+ } while (status != APR_SUCCESS && !interrupted && --retries);
+
+ if (status == APR_SUCCESS) {
+ previous = info.mtime;
+ intelligent = 2;
+ }
+ else {
+ intelligent = 1;
+ }
+ }
+ }
+
+ apr_pool_destroy(instance);
+
+ current = apr_time_now();
+ if (current < now) {
+ delay = repeat;
+ }
+ else if (current - now >= repeat) {
+ delay = repeat;
+ }
+ else {
+ delay = now + repeat - current;
+ }
+
+ /* we can't sleep the whole delay time here apiece as this is racy
+ * with respect to interrupt delivery - think about what happens
+ * if we have tested for an interrupt, then get scheduled
+ * before the apr_sleep() call and while waiting for the cpu
+ * we do get an interrupt
+ */
+ if (isdaemon) {
+ while (delay && !interrupted) {
+ if (delay > APR_USEC_PER_SEC) {
+ apr_sleep(APR_USEC_PER_SEC);
+ delay -= APR_USEC_PER_SEC;
+ }
+ else {
+ apr_sleep(delay);
+ delay = 0;
+ }
+ }
+ }
+ } while (isdaemon && !interrupted);
+
+ if (!isdaemon && interrupted) {
+ apr_file_printf(errfile, "Cache cleaning aborted due to user "
+ "request." APR_EOL_STR);
+ return 1;
+ }
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 04:28:33 +0000