diff options
Diffstat (limited to 'mod_glusterfs/apache')
| -rw-r--r-- | mod_glusterfs/apache/1.3/Makefile.am | 3 | ||||
| -rw-r--r-- | mod_glusterfs/apache/1.3/src/Makefile.am | 30 | ||||
| -rw-r--r-- | mod_glusterfs/apache/1.3/src/README.txt | 107 | ||||
| -rw-r--r-- | mod_glusterfs/apache/1.3/src/mod_glusterfs.c | 514 | ||||
| -rw-r--r-- | mod_glusterfs/apache/2.2/Makefile.am | 3 | ||||
| -rw-r--r-- | mod_glusterfs/apache/2.2/src/Makefile.am | 31 | ||||
| -rw-r--r-- | mod_glusterfs/apache/2.2/src/README.txt | 105 | ||||
| -rw-r--r-- | mod_glusterfs/apache/2.2/src/mod_glusterfs.c | 3536 | ||||
| -rw-r--r-- | mod_glusterfs/apache/Makefile.am | 10 |
9 files changed, 4339 insertions, 0 deletions
diff --git a/mod_glusterfs/apache/1.3/Makefile.am b/mod_glusterfs/apache/1.3/Makefile.am new file mode 100644 index 00000000000..d471a3f9243 --- /dev/null +++ b/mod_glusterfs/apache/1.3/Makefile.am @@ -0,0 +1,3 @@ +SUBDIRS = src + +CLEANFILES = diff --git a/mod_glusterfs/apache/1.3/src/Makefile.am b/mod_glusterfs/apache/1.3/src/Makefile.am new file mode 100644 index 00000000000..6bb3075f564 --- /dev/null +++ b/mod_glusterfs/apache/1.3/src/Makefile.am @@ -0,0 +1,30 @@ +mod_glusterfs_PROGRAMS = mod_glusterfs.so +mod_glusterfsdir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/apache/1.3 + +mod_glusterfs_so_SOURCES = mod_glusterfs.c + +all: mod_glusterfs.so + +mod_glusterfs.so: $(top_srcdir)/mod_glusterfs/apache/1.3/src/mod_glusterfs.c $(top_builddir)/libglusterfsclient/src/libglusterfsclient.la + ln -sf $(top_srcdir)/mod_glusterfs/apache/1.3/src/mod_glusterfs.c $(top_builddir)/mod_glusterfs/apache/1.3/src/mod_glusterfs-build.c + $(APXS) -c -Wc,-g3 -Wc,-O0 -D_FILE_OFFSET_BITS=64 -D__USE_FILE_OFFSET64 -D_GNU_SOURCE -I$(top_srcdir)/libglusterfsclient/src -Wl,-rpath,$(libdir) -Wl,-rpath,$(top_builddir)/libglusterfsclient/src/.libs/ $(top_builddir)/libglusterfsclient/src/.libs/libglusterfsclient.so mod_glusterfs-build.c -o $(top_builddir)/mod_glusterfs/apache/1.3/src/mod_glusterfs.so + +$(top_builddir)/libglusterfsclient/src/libglusterfsclient.la: + $(MAKE) -C $(top_builddir)/libglusterfsclient/src/ all + +install-data-local: + @echo "" + @echo "" + @echo "**********************************************************************************" + @echo "* TO INSTALL MODGLUSTERFS, PLEASE USE, " + @echo "* $(APXS) -n glusterfs -ia $(mod_glusterfsdir)/mod_glusterfs.so " + @echo "**********************************************************************************" + @echo "" + @echo "" + +#install: +# cp -fv mod_glusterfs.so $(HTTPD_LIBEXECDIR) +# cp -fv httpd.conf $(HTTPD_CONF_DIR) + +clean: + -rm -fv *.so *.o mod_glusterfs-build.c diff --git a/mod_glusterfs/apache/1.3/src/README.txt b/mod_glusterfs/apache/1.3/src/README.txt new file mode 100644 index 00000000000..378a51d79ae --- /dev/null +++ b/mod_glusterfs/apache/1.3/src/README.txt @@ -0,0 +1,107 @@ +What is mod_glusterfs? +====================== +* mod_glusterfs is a module for apache written for efficient serving of files from glusterfs. + mod_glusterfs interfaces with glusterfs using apis provided by libglusterfsclient. + +* this README speaks about installation of apache-1.3.x, where x is any minor version. + +Prerequisites for mod_glusterfs +=============================== +Though mod_glusterfs has been written as a module, with an intent of making no changes to the way apache has +been built, currently following points have to be taken care of: + +* module "so" has to be enabled, for apache to support modules. +* since glusterfs is compiled with _FILE_OFFSET_BITS=64 and __USE_FILE_OFFSET64 flags, mod_glusterfs and apache + in turn have to be compiled with the above two flags. + + $ tar xzvf apache-1.3.9.tar.gz + $ cd apache-1.3.9/ + $ # add -D_FILE_OFFSET_BITS=64 -D__USE_FILE_OFFSET64 to EXTRA_CFLAGS in src/Configuration. + $ ./configure --prefix=/usr --enable-module=so + $ cd src + $ ./Configure + $ cd ../ + $ make install + $ httpd -l | grep -i mod_so + mod_so.c + +* if multiple apache installations are present, make sure to pass --with-apxs=/path/to/apxs/of/proper/version to configure script while building glusterfs. + +Build/Install mod_glusterfs +=========================== +* mod_glusterfs is provided with glusterfs--mainline--3.0 and all releases from the same branch. + +* building glusterfs also builds mod_glusterfs. But 'make install' of glusterfs installs mod_glusterfs.so to + glusterfs install directory instead of the apache modules directory. + +* 'make install' of glusterfs will print a message similar to the one given below, which is self explanatory. + Make sure to use apxs of proper apache version in case of multiple apache installations. This will copy + mod_glusterfs.so to modules directory of proper apache version and modify the appropriate httpd.conf to enable + mod_glusterfs. + +********************************************************************************************** +* TO INSTALL MODGLUSTERFS, PLEASE USE, +* apxs -n mod_glusterfs -ia /usr/lib/glusterfs/1.4.0pre2/apache-1.3/mod_glusterfs.so +********************************************************************************************** + +Configuration +============= +* Following configuration has to be added to httpd.conf. + + <Location "/glusterfs"> + GlusterfsLogfile "/var/log/glusterfs/glusterfs.log" + GlusterfsLoglevel "warning" + GlusterfsVolumeSpecfile "/etc/glusterfs/glusterfs-client.spec" + GlusterfsCacheTimeout "600" + GlusterfsXattrFileSize "65536" + SetHandler "glusterfs-handler" + </Location> + +* GlusterfsVolumeSpecfile (COMPULSORY) + Path to the the glusterfs volume specification file. + +* GlusterfsLogfile (COMPULSORY) + Path to the glusterfs logfile. + +* GlusterfsLoglevel (OPTIONAL, default = warning) + Severity of messages that are to be logged. Allowed values are critical, error, warning, debug, none + in the decreasing order of severity. + +* GlusterfsCacheTimeOut (OPTIONAL, default = 0) + Timeout values for glusterfs stat and lookup cache. + +* GlusterfsXattrFileSize (OPTIONAL, default = 0) + Files with sizes upto and including this value are fetched through the extended attribute interface of + glusterfs rather than the usual open-read-close set of operations. For files of small sizes, it is recommended + to use extended attribute interface. + +* With the above configuration all the requests to httpd of the form www.example.org/glusterfs/path/to/file are + served from glusterfs. + +Miscellaneous points +==================== +* httpd by default runs with username "nobody" and group "nogroup". Permissions of logfile and specfile have to + be set suitably. + +* Since mod_glusterfs runs with permissions of nobody.nogroup, glusterfs has to use only login based + authentication. See docs/authentication.txt for more details. + +* To copy the data served by httpd into glusterfs mountpoint, glusterfs can be started with the + volume-specification file provided to mod_glusterfs. Any tool like cp can then be used. + +* To run in gdb, apache has to be compiled with -lpthread, since libglusterfsclient is multithreaded. + If not on Linux gdb runs into errors like: + "Error while reading shared library symbols: + Cannot find new threads: generic error" + +* when used with ib-verbs transport, ib_verbs initialization fails. + reason for this is that apache runs as non-privileged user and the amount of memory that can be + locked by default is not sufficient for ib-verbs. to fix this, as root run, + + # ulimit -l unlimited + + and then start apache. + +TODO +==== +* directory listing for the directories accessed through mod_glusterfs. diff --git a/mod_glusterfs/apache/1.3/src/mod_glusterfs.c b/mod_glusterfs/apache/1.3/src/mod_glusterfs.c new file mode 100644 index 00000000000..e13d7762679 --- /dev/null +++ b/mod_glusterfs/apache/1.3/src/mod_glusterfs.c @@ -0,0 +1,514 @@ +/* + Copyright (c) 2008 Z RESEARCH, Inc. <http://www.zresearch.com> + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + <http://www.gnu.org/licenses/>. +*/ + +#ifndef CORE_PRIVATE +#define CORE_PRIVATE +#endif + +#include <httpd.h> +#include <http_config.h> +#include <http_core.h> +#include <http_request.h> +#include <http_protocol.h> +#include <http_log.h> +#include <http_main.h> +#include <util_script.h> +#include <libglusterfsclient.h> +#include <sys/uio.h> +#include <pthread.h> + +#define GLUSTERFS_INVALID_LOGLEVEL "mod_glusterfs: Unrecognized log-level \"%s\", possible values are \"DEBUG|WARNING|ERROR|CRITICAL|NONE\"\n" + +#define GLUSTERFS_HANDLER "glusterfs-handler" +#define GLUSTERFS_CHUNK_SIZE 131072 + +module MODULE_VAR_EXPORT glusterfs_module; + +/*TODO: verify error returns to server core */ + +typedef struct glusterfs_dir_config { + char *logfile; + char *loglevel; + char *specfile; + char *mount_dir; + char *buf; + size_t xattr_file_size; + uint32_t cache_timeout; + libglusterfs_handle_t handle; +} glusterfs_dir_config_t; + +typedef struct glusterfs_async_local { + int op_ret; + int op_errno; + char async_read_complete; + off_t length; + off_t read_bytes; + glusterfs_read_buf_t *buf; + request_rec *request; + pthread_mutex_t lock; + pthread_cond_t cond; +}glusterfs_async_local_t; + +#define GLUSTERFS_CMD_PERMS ACCESS_CONF + +static glusterfs_dir_config_t * +mod_glusterfs_dconfig(request_rec *r) +{ + glusterfs_dir_config_t *dir_config = NULL; + if (r->per_dir_config != NULL) { + dir_config = ap_get_module_config (r->per_dir_config, &glusterfs_module); + } + + return dir_config; +} + +static +const char *add_xattr_file_size(cmd_parms *cmd, void *dummy, char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + dir_config->xattr_file_size = atoi (arg); + return NULL; +} + +static +const char *set_cache_timeout(cmd_parms *cmd, void *dummy, char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + dir_config->cache_timeout = atoi (arg); + return NULL; +} + +static +const char *set_loglevel(cmd_parms *cmd, void *dummy, char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + char *error = NULL; + if (strncasecmp (arg, "DEBUG", strlen ("DEBUG")) + && strncasecmp (arg, "WARNING", strlen ("WARNING")) + && strncasecmp (arg, "CRITICAL", strlen ("CRITICAL")) + && strncasecmp (arg, "NONE", strlen ("NONE")) + && strncasecmp (arg, "ERROR", strlen ("ERROR"))) + error = GLUSTERFS_INVALID_LOGLEVEL; + else + dir_config->loglevel = arg; + + return error; +} + +static +const char *add_logfile(cmd_parms *cmd, void *dummy, char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + dir_config->logfile = arg; + + return NULL; +} + +static +const char *add_specfile(cmd_parms *cmd, void *dummy, char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + + dir_config->specfile = arg; + + return NULL; +} + +static void * +mod_glusterfs_create_dir_config(pool *p, char *dirspec) +{ + glusterfs_dir_config_t *dir_config = NULL; + + dir_config = (glusterfs_dir_config_t *) ap_pcalloc(p, sizeof(*dir_config)); + + dir_config->mount_dir = dirspec; + dir_config->logfile = dir_config->specfile = (char *)0; + dir_config->loglevel = "warning"; + dir_config->handle = (libglusterfs_handle_t) 0; + dir_config->cache_timeout = 0; + dir_config->buf = NULL; + + return (void *) dir_config; +} + +static void +mod_glusterfs_child_init(server_rec *s, pool *p) +{ + void **urls = NULL; + int n, i; + core_server_config *mod_core_config = ap_get_module_config (s->module_config, + &core_module); + glusterfs_dir_config_t *dir_config = NULL; + glusterfs_init_ctx_t ctx; + + n = mod_core_config->sec_url->nelts; + urls = (void **)mod_core_config->sec_url->elts; + for (i = 0; i < n; i++) { + dir_config = ap_get_module_config (urls[i], &glusterfs_module); + + if (dir_config) { + memset (&ctx, 0, sizeof (ctx)); + + ctx.logfile = dir_config->logfile; + ctx.loglevel = dir_config->loglevel; + ctx.lookup_timeout = ctx.stat_timeout = dir_config->cache_timeout; + ctx.specfile = dir_config->specfile; + + dir_config->handle = glusterfs_init (&ctx); + } + dir_config = NULL; + } +} + +static void +mod_glusterfs_child_exit(server_rec *s, pool *p) +{ + void **urls = NULL; + int n, i; + core_server_config *mod_core_config = ap_get_module_config (s->module_config, + &core_module); + glusterfs_dir_config_t *dir_config = NULL; + + n = mod_core_config->sec_url->nelts; + urls = (void **)mod_core_config->sec_url->elts; + for (i = 0; i < n; i++) { + dir_config = ap_get_module_config (urls[i], &glusterfs_module); + if (dir_config && dir_config->handle) { + glusterfs_fini (dir_config->handle); + dir_config->handle = 0; + } + dir_config = NULL; + } +} + +static int mod_glusterfs_fixup(request_rec *r) +{ + glusterfs_dir_config_t *dir_config = NULL; + int access_status; + int ret; + char *path = NULL; + + dir_config = mod_glusterfs_dconfig(r); + + if (dir_config && dir_config->mount_dir && !(strncmp (ap_pstrcat (r->pool, dir_config->mount_dir, "/", NULL), r->uri, strlen (dir_config->mount_dir) + 1) && !r->handler)) + r->handler = ap_pstrdup (r->pool, GLUSTERFS_HANDLER); + + if (!r->handler || (r->handler && strcmp (r->handler, GLUSTERFS_HANDLER))) + return DECLINED; + + if (dir_config->mount_dir) + path = r->uri + strlen (dir_config->mount_dir); + + memset (&r->finfo, 0, sizeof (r->finfo)); + + dir_config->buf = calloc (1, dir_config->xattr_file_size); + if (!dir_config->buf) { + return HTTP_INTERNAL_SERVER_ERROR; + } + + ret = glusterfs_lookup (dir_config->handle, path, dir_config->buf, + dir_config->xattr_file_size, &r->finfo); + + if (ret == -1 || r->finfo.st_size > dir_config->xattr_file_size || S_ISDIR (r->finfo.st_mode)) { + free (dir_config->buf); + dir_config->buf = NULL; + + if (ret == -1) { + int error = HTTP_NOT_FOUND; + char *emsg = NULL; + if (r->path_info == NULL) { + emsg = ap_pstrcat(r->pool, strerror (errno), r->filename, NULL); + } + else { + emsg = ap_pstrcat(r->pool, strerror (errno), r->filename, r->path_info, NULL); + } + ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, r, "%s", emsg); + if (errno != ENOENT) { + error = HTTP_INTERNAL_SERVER_ERROR; + } + return error; + } + } + + if (r->uri && strlen (r->uri) && r->uri[strlen(r->uri) - 1] == '/') + r->handler = NULL; + + r->filename = ap_pstrcat (r->pool, r->filename, r->path_info, NULL); + + if ((access_status = ap_find_types(r)) != 0) { + return DECLINED; + } + + return OK; +} + + +int +mod_glusterfs_readv_async_cbk (glusterfs_read_buf_t *buf, + void *cbk_data) +{ + glusterfs_async_local_t *local = cbk_data; + + pthread_mutex_lock (&local->lock); + { + local->async_read_complete = 1; + local->buf = buf; + pthread_cond_signal (&local->cond); + } + pthread_mutex_unlock (&local->lock); + + return 0; +} + +/* use read_async just to avoid memcpy of read buffer in libglusterfsclient */ +static int +mod_glusterfs_read_async (request_rec *r, int fd, off_t offset, off_t length) +{ + glusterfs_async_local_t local; + off_t end; + int nbytes; + int complete; + pthread_cond_init (&local.cond, NULL); + pthread_mutex_init (&local.lock, NULL); + + memset (&local, 0, sizeof (local)); + local.request = r; + + if (length > 0) + end = offset + length; + + do { + glusterfs_read_buf_t *buf; + int i; + if (length > 0) { + nbytes = end - offset; + if (nbytes > GLUSTERFS_CHUNK_SIZE) + nbytes = GLUSTERFS_CHUNK_SIZE; + } else + nbytes = GLUSTERFS_CHUNK_SIZE; + + glusterfs_read_async(fd, + nbytes, + offset, + mod_glusterfs_readv_async_cbk, + (void *)&local); + + pthread_mutex_lock (&local.lock); + { + while (!local.async_read_complete) { + pthread_cond_wait (&local.cond, &local.lock); + } + + local.op_ret = local.buf->op_ret; + local.op_errno = local.buf->op_errno; + + local.async_read_complete = 0; + buf = local.buf; + + if (length < 0) + complete = (local.buf->op_ret <= 0); + else { + local.read_bytes += local.buf->op_ret; + complete = ((local.read_bytes == length) || (local.buf->op_ret < 0)); + } + } + pthread_mutex_unlock (&local.lock); + + for (i = 0; i < buf->count; i++) { + if (ap_rwrite (buf->vector[i].iov_base, buf->vector[i].iov_len, r) < 0) { + local.op_ret = -1; + complete = 1; + break; + } + } + + glusterfs_free (buf); + + offset += nbytes; + } while (!complete); + + return (local.op_ret < 0 ? SERVER_ERROR : OK); +} + +/* TODO: to read blocks of size "length" from offset "offset" */ +/* + static int + mod_glusterfs_read_sync (request_rec *r, int fd, off_t offset, off_t length) + { + int error = OK; + off_t read_bytes; + char buf [GLUSTERFS_CHUNK_SIZE]; + + while ((read_bytes = glusterfs_read (fd, buf, GLUSTERFS_CHUNK_SIZE)) && read_bytes != -1) { + ap_rwrite (buf, read_bytes, r); + } + if (read_bytes) { + error = SERVER_ERROR; + } + return error; + } +*/ + +static int +mod_glusterfs_handler(request_rec *r) +{ + glusterfs_dir_config_t *dir_config; + char *path = NULL; + int error = OK; + int rangestatus = 0; + int errstatus = OK; + int fd; + + if (!r->handler || (r->handler && strcmp (r->handler, GLUSTERFS_HANDLER))) + return DECLINED; + + if (r->uri[0] == '\0' || r->uri[strlen(r->uri) - 1] == '/') { + return DECLINED; + } + + dir_config = mod_glusterfs_dconfig (r); + + if (r->method_number != M_GET) { + return METHOD_NOT_ALLOWED; + } + + if (!dir_config->handle) { + ap_log_rerror (APLOG_MARK, APLOG_ERR, r, + "glusterfs initialization failed\n"); + return FORBIDDEN; + } + + ap_update_mtime(r, r->finfo.st_mtime); + ap_set_last_modified(r); + ap_set_etag(r); + ap_table_setn(r->headers_out, "Accept-Ranges", "bytes"); + if (((errstatus = ap_meets_conditions(r)) != OK) + || (errstatus = ap_set_content_length(r, r->finfo.st_size))) { + return errstatus; + } + rangestatus = ap_set_byterange(r); + ap_send_http_header(r); + + if (r->finfo.st_size <= dir_config->xattr_file_size && dir_config->buf) { + if (!r->header_only) { + error = OK; + ap_log_rerror (APLOG_MARK, APLOG_NOTICE, r, + "fetching data from glusterfs through xattr interface\n"); + + if (!rangestatus) { + if (ap_rwrite (dir_config->buf, r->finfo.st_size, r) < 0) { + error = HTTP_INTERNAL_SERVER_ERROR; + } + } else { + long offset, length; + while (ap_each_byterange (r, &offset, &length)) { + if (ap_rwrite (dir_config->buf + offset, length, r) < 0) { + error = HTTP_INTERNAL_SERVER_ERROR; + break; + } + } + } + } + + free (dir_config->buf); + dir_config->buf = NULL; + + return error; + } + + path = r->uri + strlen (dir_config->mount_dir); + fd = glusterfs_open (dir_config->handle, path , O_RDONLY, 0); + + if (fd == 0) { + ap_log_rerror(APLOG_MARK, APLOG_ERR, r, + "file permissions deny server access: %s", r->filename); + return FORBIDDEN; + } + + if (!r->header_only) { + if (!rangestatus) { + mod_glusterfs_read_async (r, fd, 0, -1); + } else { + long offset, length; + while (ap_each_byterange(r, &offset, &length)) { + mod_glusterfs_read_async (r, fd, offset, length); + } + } + } + + glusterfs_close (fd); + return error; +} + +static const command_rec mod_glusterfs_cmds[] = +{ + {"GlusterfsLogfile", add_logfile, NULL, + GLUSTERFS_CMD_PERMS, TAKE1, + "Glusterfs Logfile"}, + {"GlusterfsLoglevel", set_loglevel, NULL, + GLUSTERFS_CMD_PERMS, TAKE1, + "Glusterfs Loglevel:anyone of none, critical, error, warning, debug"}, + {"GlusterfsCacheTimeout", set_cache_timeout, NULL, + GLUSTERFS_CMD_PERMS, TAKE1, + "Timeout value in seconds for caching lookups and stats"}, + {"GlusterfsVolumeSpecfile", add_specfile, NULL, + GLUSTERFS_CMD_PERMS, TAKE1, + "Glusterfs Specfile required to access contents of this directory"}, + {"GlusterfsXattrFileSize", add_xattr_file_size, NULL, + GLUSTERFS_CMD_PERMS, TAKE1, + "Maximum size of the file to be fetched using xattr interface of glusterfs"}, + {NULL} +}; + +static const handler_rec mod_glusterfs_handlers[] = +{ + {GLUSTERFS_HANDLER, mod_glusterfs_handler}, + {NULL} +}; + +module glusterfs_module = +{ + STANDARD_MODULE_STUFF, + NULL, + mod_glusterfs_create_dir_config, /* per-directory config creator */ + NULL, + NULL, /* server config creator */ + NULL, /* server config merger */ + mod_glusterfs_cmds, /* command table */ + mod_glusterfs_handlers, /* [7] list of handlers */ + NULL, /* [2] filename-to-URI translation */ + NULL, /* [5] check/validate user_id */ + NULL, /* [6] check user_id is valid *here* */ + NULL, /* [4] check access by host address */ + NULL, /* [7] MIME type checker/setter */ + mod_glusterfs_fixup, /* [8] fixups */ + NULL, /* [10] logger */ +#if MODULE_MAGIC_NUMBER >= 19970103 + NULL, /* [3] header parser */ +#endif +#if MODULE_MAGIC_NUMBER >= 19970719 + mod_glusterfs_child_init, /* process initializer */ +#endif +#if MODULE_MAGIC_NUMBER >= 19970728 + mod_glusterfs_child_exit, /* process exit/cleanup */ +#endif +#if MODULE_MAGIC_NUMBER >= 19970902 + NULL /* [1] post read_request handling */ +#endif +}; diff --git a/mod_glusterfs/apache/2.2/Makefile.am b/mod_glusterfs/apache/2.2/Makefile.am new file mode 100644 index 00000000000..d471a3f9243 --- /dev/null +++ b/mod_glusterfs/apache/2.2/Makefile.am @@ -0,0 +1,3 @@ +SUBDIRS = src + +CLEANFILES = diff --git a/mod_glusterfs/apache/2.2/src/Makefile.am b/mod_glusterfs/apache/2.2/src/Makefile.am new file mode 100644 index 00000000000..1e8f3a31ea0 --- /dev/null +++ b/mod_glusterfs/apache/2.2/src/Makefile.am @@ -0,0 +1,31 @@ +mod_glusterfs_PROGRAMS = mod_glusterfs.so +mod_glusterfsdir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/apache/2.2 + +mod_glusterfs_so_SOURCES = mod_glusterfs.c + +all: mod_glusterfs.so + +mod_glusterfs.so: $(top_srcdir)/mod_glusterfs/apache/2.2/src/mod_glusterfs.c $(top_builddir)/libglusterfsclient/src/libglusterfsclient.la + ln -sf $(top_srcdir)/mod_glusterfs/apache/2.2/src/mod_glusterfs.c $(top_builddir)/mod_glusterfs/apache/2.2/src/mod_glusterfs-build.c + $(APXS) -c -o mod_glusterfs.la -Wc,-g3 -Wc,-O0 -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D__USE_FILE_OFFSET64 -I$(top_srcdir)/libglusterfsclient/src -L$(top_builddir)/libglusterfsclient/src/.libs/ -lglusterfsclient mod_glusterfs-build.c + -ln -sf .libs/mod_glusterfs.so mod_glusterfs.so + +$(top_builddir)/libglusterfsclient/src/libglusterfsclient.la: + $(MAKE) -C $(top_builddir)/libglusterfsclient/src/ all + +install-data-local: + @echo "" + @echo "" + @echo "**********************************************************************************" + @echo "* TO INSTALL MODGLUSTERFS, PLEASE USE, " + @echo "* $(APXS) -n glusterfs -ia $(mod_glusterfsdir)/mod_glusterfs.so " + @echo "**********************************************************************************" + @echo "" + @echo "" + +#install: +# cp -fv mod_glusterfs.so $(HTTPD_LIBEXECDIR) +# cp -fv httpd.conf $(HTTPD_CONF_DIR) + +clean: + rm -fv *.so *.o diff --git a/mod_glusterfs/apache/2.2/src/README.txt b/mod_glusterfs/apache/2.2/src/README.txt new file mode 100644 index 00000000000..00298454219 --- /dev/null +++ b/mod_glusterfs/apache/2.2/src/README.txt @@ -0,0 +1,105 @@ +What is mod_glusterfs? +====================== +* mod_glusterfs is a module for apache written for efficient serving of files from glusterfs. + mod_glusterfs interfaces with glusterfs using apis provided by libglusterfsclient. + +* this README speaks about installing mod_glusterfs for httpd-2.2 and higher. + +Prerequisites for mod_glusterfs +=============================== +Though mod_glusterfs has been written as a module, with an intent of making no changes to +the way apache has been built, currently following points have to be taken care of: + +* since glusterfs is compiled with _FILE_OFFSET_BITS=64 and __USE_FILE_OFFSET64 flags, mod_glusterfs and apache + in turn have to be compiled with the above two flags. + + $ tar xzf httpd-2.2.10.tar.gz + $ cd httpd-2.2.10/ + $ export CFLAGS='-D_FILE_OFFSET_BITS=64 -D__USE_FILE_OFFSET64' + $ ./configure --prefix=/usr + $ make + $ make install + $ httpd -l | grep -i mod_so + mod_so.c + +* if multiple apache installations are present, make sure to pass --with-apxs=/path/to/apxs/of/proper/version + to configure script while building glusterfs. + +Build/Install mod_glusterfs +=========================== +* mod_glusterfs is provided with glusterfs--mainline--3.0 and all releases from the same branch. + +* building glusterfs also builds mod_glusterfs. But 'make install' of glusterfs installs mod_glusterfs.so to + glusterfs install directory instead of the apache modules directory. + +* 'make install' of glusterfs will print a message similar to the one given below, which is self explanatory. + Make sure to use apxs of proper apache version in case of multiple apache installations. This will copy + mod_glusterfs.so to modules directory of proper apache version and modify the appropriate httpd.conf to enable + mod_glusterfs. + +********************************************************************************** +* TO INSTALL MODGLUSTERFS, PLEASE USE, +* apxs -n glusterfs -ia /usr/lib/glusterfs/1.4.0tla872/apache/2.2/mod_glusterfs.so +********************************************************************************** + +Configuration +============= +* Following configuration has to be added to httpd.conf. + + <Location "/glusterfs"> + GlusterfsLogfile "/var/log/glusterfs/glusterfs.log" + GlusterfsLoglevel "warning" + GlusterfsVolumeSpecfile "/etc/glusterfs/glusterfs-client.spec" + GlusterfsCacheTimeout "600" + GlusterfsXattrFileSize "65536" + SetHandler "glusterfs-handler" + </Location> + +* GlusterfsVolumeSpecfile (COMPULSORY) + Path to the the glusterfs volume specification file. + +* GlusterfsLogfile (COMPULSORY) + Path to the glusterfs logfile. + +* GlusterfsLoglevel (OPTIONAL, default = warning) + Severity of messages that are to be logged. Allowed values are critical, error, warning, debug, none + in the decreasing order of severity. + +* GlusterfsCacheTimeOut (OPTIONAL, default = 0) + Timeout values for glusterfs stat and lookup cache. + +* GlusterfsXattrFileSize (OPTIONAL, default = 0) + Files with sizes upto and including this value are fetched through the extended attribute interface of + glusterfs rather than the usual open-read-close set of operations. For files of small sizes, it is recommended + to use extended attribute interface. + +* With the above configuration all the requests to httpd of the form www.example.org/glusterfs/path/to/file are + served from glusterfs. + +* mod_glusterfs also implements mod_dir and mod_autoindex behaviour for files under glusterfs mount. + Hence it also takes the directives related to both of these modules. For more details, refer the + documentation for both of these modules. + +Miscellaneous points +==================== +* httpd by default runs with username "nobody" and group "nogroup". Permissions of logfile and specfile have to + be set suitably. + +* Since mod_glusterfs runs with permissions of nobody.nogroup, glusterfs has to use only login based + authentication. See docs/authentication.txt for more details. + +* To copy the data served by httpd into glusterfs mountpoint, glusterfs can be started with the + volume-specification file provided to mod_glusterfs. Any tool like cp can then be used. + +* To run in gdb, apache has to be compiled with -lpthread, since libglusterfsclient is + multithreaded. If not on Linux gdb runs into errors like: + "Error while reading shared library symbols: + Cannot find new threads: generic error" + +* when used with ib-verbs transport, ib_verbs initialization fails. + reason for this is that apache runs as non-privileged user and the amount of memory that can be + locked by default is not sufficient for ib-verbs. to fix this, as root run, + + # ulimit -l unlimited + + and then start apache. diff --git a/mod_glusterfs/apache/2.2/src/mod_glusterfs.c b/mod_glusterfs/apache/2.2/src/mod_glusterfs.c new file mode 100644 index 00000000000..dff05817805 --- /dev/null +++ b/mod_glusterfs/apache/2.2/src/mod_glusterfs.c @@ -0,0 +1,3536 @@ +/* + Copyright (c) 2008 Z RESEARCH, Inc. <http://www.zresearch.com> + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + <http://www.gnu.org/licenses/>. +*/ + +#ifndef CORE_PRIVATE +#define CORE_PRIVATE +#endif + +#ifndef NO_CONTENT_TYPE +#define NO_CONTENT_TYPE "none" +#endif + +#define BYTERANGE_FMT "%" APR_OFF_T_FMT "-%" APR_OFF_T_FMT "/%" APR_OFF_T_FMT + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +#include <httpd.h> +#include <http_config.h> +#include <http_core.h> +#include <http_request.h> +#include <http_protocol.h> +#include <http_log.h> +#include <http_main.h> +#include <util_script.h> +#include <util_filter.h> +#include <libglusterfsclient.h> +#include <sys/uio.h> +#include <pthread.h> +#include <apr.h> +#include <apr_strings.h> +#include <apr_buckets.h> +#include <apr_fnmatch.h> +#include <apr_lib.h> + +#define GLUSTERFS_INVALID_LOGLEVEL "mod_glfs: Unrecognized log-level \"%s\", possible values are \"DEBUG|WARNING|ERROR|CRITICAL|NONE\"\n" + +#define GLUSTERFS_HANDLER "glusterfs-handler" +#define GLUSTERFS_CHUNK_SIZE 131072 + +static char c_by_encoding, c_by_type, c_by_path; + +#define BY_ENCODING &c_by_encoding +#define BY_TYPE &c_by_type +#define BY_PATH &c_by_path + +module AP_MODULE_DECLARE_DATA glusterfs_module; +extern module core_module; + +#define NO_OPTIONS (1 << 0) /* Indexing options */ +#define ICONS_ARE_LINKS (1 << 1) +#define SCAN_HTML_TITLES (1 << 2) +#define SUPPRESS_ICON (1 << 3) +#define SUPPRESS_LAST_MOD (1 << 4) +#define SUPPRESS_SIZE (1 << 5) +#define SUPPRESS_DESC (1 << 6) +#define SUPPRESS_PREAMBLE (1 << 7) +#define SUPPRESS_COLSORT (1 << 8) +#define SUPPRESS_RULES (1 << 9) +#define FOLDERS_FIRST (1 << 10) +#define VERSION_SORT (1 << 11) +#define TRACK_MODIFIED (1 << 12) +#define FANCY_INDEXING (1 << 13) +#define TABLE_INDEXING (1 << 14) +#define IGNORE_CLIENT (1 << 15) +#define IGNORE_CASE (1 << 16) +#define EMIT_XHTML (1 << 17) +#define SHOW_FORBIDDEN (1 << 18) + +#define K_NOADJUST 0 +#define K_ADJUST 1 +#define K_UNSET 2 + +/* + * Define keys for sorting. + */ +#define K_NAME 'N' /* Sort by file name (default) */ +#define K_LAST_MOD 'M' /* Last modification date */ +#define K_SIZE 'S' /* Size (absolute, not as displayed) */ +#define K_DESC 'D' /* Description */ +#define K_VALID "NMSD" /* String containing _all_ valid K_ opts */ + +#define D_ASCENDING 'A' +#define D_DESCENDING 'D' +#define D_VALID "AD" /* String containing _all_ valid D_ opts */ + +/* + * These are the dimensions of the default icons supplied with Apache. + */ +#define DEFAULT_ICON_WIDTH 20 +#define DEFAULT_ICON_HEIGHT 22 + +/* + * Other default dimensions. + */ +#define DEFAULT_NAME_WIDTH 23 +#define DEFAULT_DESC_WIDTH 23 + +struct mod_glfs_ai_item { + char *type; + char *apply_to; + char *apply_path; + char *data; +}; + +typedef struct mod_glfs_ai_desc_t { + char *pattern; + char *description; + int full_path; + int wildcards; +} mod_glfs_ai_desc_t; + +typedef enum { + SLASH_OFF = 0, + SLASH_ON, + SLASH_UNSET +} mod_glfs_dir_slash_cfg; + +/* static ap_filter_rec_t *mod_glfs_output_filter_handle; */ + +/*TODO: verify error returns to server core */ + +typedef struct glusterfs_dir_config { + char *logfile; + char *loglevel; + char *specfile; + char *mount_dir; + char *buf; + size_t xattr_file_size; + uint32_t cache_timeout; + libglusterfs_handle_t handle; + + /* mod_dir options */ + apr_array_header_t *index_names; + mod_glfs_dir_slash_cfg do_slash; + + /* autoindex options */ + char *default_icon; + char *style_sheet; + apr_int32_t opts; + apr_int32_t incremented_opts; + apr_int32_t decremented_opts; + int name_width; + int name_adjust; + int desc_width; + int desc_adjust; + int icon_width; + int icon_height; + char default_keyid; + char default_direction; + + apr_array_header_t *icon_list; + apr_array_header_t *alt_list; + apr_array_header_t *desc_list; + apr_array_header_t *ign_list; + apr_array_header_t *hdr_list; + apr_array_header_t *rdme_list; + + char *ctype; + char *charset; +} glusterfs_dir_config_t; + +typedef struct glusterfs_async_local { + int op_ret; + int op_errno; + char async_read_complete; + off_t length; + off_t read_bytes; + glusterfs_read_buf_t *buf; + request_rec *request; + pthread_mutex_t lock; + pthread_cond_t cond; +}glusterfs_async_local_t; + +#define GLUSTERFS_CMD_PERMS ACCESS_CONF + + +static glusterfs_dir_config_t * +mod_glfs_dconfig (request_rec *r) +{ + glusterfs_dir_config_t *dir_config = NULL; + if (r->per_dir_config != NULL) { + dir_config = ap_get_module_config (r->per_dir_config, &glusterfs_module); + } + + return dir_config; +} + + +static const char * +cmd_add_xattr_file_size (cmd_parms *cmd, void *dummy, const char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + dir_config->xattr_file_size = atoi (arg); + return NULL; +} + + +static const char * +cmd_set_cache_timeout (cmd_parms *cmd, void *dummy, const char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + dir_config->cache_timeout = atoi (arg); + return NULL; +} + + +static const char * +cmd_set_loglevel (cmd_parms *cmd, void *dummy, const char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + char *error = NULL; + if (strncasecmp (arg, "DEBUG", strlen ("DEBUG")) + && strncasecmp (arg, "WARNING", strlen ("WARNING")) + && strncasecmp (arg, "CRITICAL", strlen ("CRITICAL")) + && strncasecmp (arg, "NONE", strlen ("NONE")) + && strncasecmp (arg, "ERROR", strlen ("ERROR"))) + error = GLUSTERFS_INVALID_LOGLEVEL; + else + dir_config->loglevel = apr_pstrdup (cmd->pool, arg); + + return error; +} + +static const char * +cmd_add_logfile (cmd_parms *cmd, void *dummy, const char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + dir_config->logfile = apr_pstrdup (cmd->pool, arg); + + return NULL; +} + + +static const char * +cmd_add_volume_specfile (cmd_parms *cmd, void *dummy, const char *arg) +{ + glusterfs_dir_config_t *dir_config = dummy; + + dir_config->specfile = apr_pstrdup (cmd->pool, arg); + + return NULL; +} + +#define WILDCARDS_REQUIRED 0 + +static const char * +cmd_add_desc (cmd_parms *cmd, void *d, const char *desc, + const char *to) +{ + glusterfs_dir_config_t *dcfg = (glusterfs_dir_config_t *) d; + mod_glfs_ai_desc_t *desc_entry; + char *prefix = ""; + + desc_entry = (mod_glfs_ai_desc_t *) apr_array_push(dcfg->desc_list); + desc_entry->full_path = (ap_strchr_c(to, '/') == NULL) ? 0 : 1; + desc_entry->wildcards = (WILDCARDS_REQUIRED + || desc_entry->full_path + || apr_fnmatch_test(to)); + if (desc_entry->wildcards) { + prefix = desc_entry->full_path ? "*/" : "*"; + desc_entry->pattern = apr_pstrcat(dcfg->desc_list->pool, + prefix, to, "*", NULL); + } + else { + desc_entry->pattern = apr_pstrdup(dcfg->desc_list->pool, to); + } + desc_entry->description = apr_pstrdup(dcfg->desc_list->pool, desc); + return NULL; +} + + +static void push_item(apr_array_header_t *arr, char *type, const char *to, + const char *path, const char *data) +{ + struct mod_glfs_ai_item *p = (struct mod_glfs_ai_item *) apr_array_push(arr); + + if (!to) { + to = ""; + } + if (!path) { + path = ""; + } + + p->type = type; + p->data = data ? apr_pstrdup(arr->pool, data) : NULL; + p->apply_path = apr_pstrcat(arr->pool, path, "*", NULL); + + if ((type == BY_PATH) && (!ap_is_matchexp(to))) { + p->apply_to = apr_pstrcat(arr->pool, "*", to, NULL); + } + else if (to) { + p->apply_to = apr_pstrdup(arr->pool, to); + } + else { + p->apply_to = NULL; + } +} + + +static const char * +cmd_add_ignore (cmd_parms *cmd, void *d, const char *ext) +{ + push_item(((glusterfs_dir_config_t *) d)->ign_list, 0, ext, cmd->path, NULL); + return NULL; +} + + +static const char * +cmd_add_header (cmd_parms *cmd, void *d, const char *name) +{ + push_item(((glusterfs_dir_config_t *) d)->hdr_list, 0, NULL, cmd->path, + name); + return NULL; +} + + +static const char * +cmd_add_readme (cmd_parms *cmd, void *d, const char *name) +{ + push_item(((glusterfs_dir_config_t *) d)->rdme_list, 0, NULL, cmd->path, + name); + return NULL; +} + + +static const char * +cmd_add_opts (cmd_parms *cmd, void *d, int argc, char *const argv[]) +{ + int i; + char *w; + apr_int32_t opts; + apr_int32_t opts_add; + apr_int32_t opts_remove; + char action; + glusterfs_dir_config_t *d_cfg = (glusterfs_dir_config_t *) d; + + opts = d_cfg->opts; + opts_add = d_cfg->incremented_opts; + opts_remove = d_cfg->decremented_opts; + + for (i = 0; i < argc; i++) { + int option = 0; + w = argv[i]; + + if ((*w == '+') || (*w == '-')) { + action = *(w++); + } + else { + action = '\0'; + } + if (!strcasecmp(w, "FancyIndexing")) { + option = FANCY_INDEXING; + } + else if (!strcasecmp(w, "FoldersFirst")) { + option = FOLDERS_FIRST; + } + else if (!strcasecmp(w, "HTMLTable")) { + option = TABLE_INDEXING; + } + else if (!strcasecmp(w, "IconsAreLinks")) { + option = ICONS_ARE_LINKS; + } + else if (!strcasecmp(w, "IgnoreCase")) { + option = IGNORE_CASE; + } + else if (!strcasecmp(w, "IgnoreClient")) { + option = IGNORE_CLIENT; + } + else if (!strcasecmp(w, "ScanHTMLTitles")) { + option = SCAN_HTML_TITLES; + } + else if (!strcasecmp(w, "SuppressColumnSorting")) { + option = SUPPRESS_COLSORT; + } + else if (!strcasecmp(w, "SuppressDescription")) { + option = SUPPRESS_DESC; + } + else if (!strcasecmp(w, "SuppressHTMLPreamble")) { + option = SUPPRESS_PREAMBLE; + } + else if (!strcasecmp(w, "SuppressIcon")) { + option = SUPPRESS_ICON; + } + else if (!strcasecmp(w, "SuppressLastModified")) { + option = SUPPRESS_LAST_MOD; + } + else if (!strcasecmp(w, "SuppressSize")) { + option = SUPPRESS_SIZE; + } + else if (!strcasecmp(w, "SuppressRules")) { + option = SUPPRESS_RULES; + } + else if (!strcasecmp(w, "TrackModified")) { + option = TRACK_MODIFIED; + } + else if (!strcasecmp(w, "VersionSort")) { + option = VERSION_SORT; + } + else if (!strcasecmp(w, "XHTML")) { + option = EMIT_XHTML; + } + else if (!strcasecmp(w, "ShowForbidden")) { + option = SHOW_FORBIDDEN; + } + else if (!strcasecmp(w, "None")) { + if (action != '\0') { + return "Cannot combine '+' or '-' with 'None' keyword"; + } + opts = NO_OPTIONS; + opts_add = 0; + opts_remove = 0; + } + else if (!strcasecmp(w, "IconWidth")) { + if (action != '-') { + d_cfg->icon_width = DEFAULT_ICON_WIDTH; + } + else { + d_cfg->icon_width = 0; + } + } + else if (!strncasecmp(w, "IconWidth=", 10)) { + if (action == '-') { + return "Cannot combine '-' with IconWidth=n"; + } + d_cfg->icon_width = atoi(&w[10]); + } + else if (!strcasecmp(w, "IconHeight")) { + if (action != '-') { + d_cfg->icon_height = DEFAULT_ICON_HEIGHT; + } + else { + d_cfg->icon_height = 0; + } + } + else if (!strncasecmp(w, "IconHeight=", 11)) { + if (action == '-') { + return "Cannot combine '-' with IconHeight=n"; + } + d_cfg->icon_height = atoi(&w[11]); + } + else if (!strcasecmp(w, "NameWidth")) { + if (action != '-') { + return "NameWidth with no value may only appear as " + "'-NameWidth'"; + } + d_cfg->name_width = DEFAULT_NAME_WIDTH; + d_cfg->name_adjust = K_NOADJUST; + } + else if (!strncasecmp(w, "NameWidth=", 10)) { + if (action == '-') { + return "Cannot combine '-' with NameWidth=n"; + } + if (w[10] == '*') { + d_cfg->name_adjust = K_ADJUST; + } + else { + int width = atoi(&w[10]); + + if (width && (width < 5)) { + return "NameWidth value must be greater than 5"; + } + d_cfg->name_width = width; + d_cfg->name_adjust = K_NOADJUST; + } + } + else if (!strcasecmp(w, "DescriptionWidth")) { + if (action != '-') { + return "DescriptionWidth with no value may only appear as " + "'-DescriptionWidth'"; + } + d_cfg->desc_width = DEFAULT_DESC_WIDTH; + d_cfg->desc_adjust = K_NOADJUST; + } + else if (!strncasecmp(w, "DescriptionWidth=", 17)) { + if (action == '-') { + return "Cannot combine '-' with DescriptionWidth=n"; + } + if (w[17] == '*') { + d_cfg->desc_adjust = K_ADJUST; + } + else { + int width = atoi(&w[17]); + + if (width && (width < 12)) { + return "DescriptionWidth value must be greater than 12"; + } + d_cfg->desc_width = width; + d_cfg->desc_adjust = K_NOADJUST; + } + } + else if (!strncasecmp(w, "Type=", 5)) { + d_cfg->ctype = apr_pstrdup(cmd->pool, &w[5]); + } + else if (!strncasecmp(w, "Charset=", 8)) { + d_cfg->charset = apr_pstrdup(cmd->pool, &w[8]); + } + else { + return "Invalid directory indexing option"; + } + if (action == '\0') { + opts |= option; + opts_add = 0; + opts_remove = 0; + } + else if (action == '+') { + opts_add |= option; + opts_remove &= ~option; + } + else { + opts_remove |= option; + opts_add &= ~option; + } + } + if ((opts & NO_OPTIONS) && (opts & ~NO_OPTIONS)) { + return "Cannot combine other IndexOptions keywords with 'None'"; + } + d_cfg->incremented_opts = opts_add; + d_cfg->decremented_opts = opts_remove; + d_cfg->opts = opts; + return NULL; +} + + +static const char * +cmd_set_default_order(cmd_parms *cmd, void *m, + const char *direction, const char *key) +{ + glusterfs_dir_config_t *d_cfg = (glusterfs_dir_config_t *) m; + + if (!strcasecmp(direction, "Ascending")) { + d_cfg->default_direction = D_ASCENDING; + } + else if (!strcasecmp(direction, "Descending")) { + d_cfg->default_direction = D_DESCENDING; + } + else { + return "First keyword must be 'Ascending' or 'Descending'"; + } + + if (!strcasecmp(key, "Name")) { + d_cfg->default_keyid = K_NAME; + } + else if (!strcasecmp(key, "Date")) { + d_cfg->default_keyid = K_LAST_MOD; + } + else if (!strcasecmp(key, "Size")) { + d_cfg->default_keyid = K_SIZE; + } + else if (!strcasecmp(key, "Description")) { + d_cfg->default_keyid = K_DESC; + } + else { + return "Second keyword must be 'Name', 'Date', 'Size', or " + "'Description'"; + } + + return NULL; +} + + +static char c_by_encoding, c_by_type, c_by_path; + +#define BY_ENCODING &c_by_encoding +#define BY_TYPE &c_by_type +#define BY_PATH &c_by_path + +/* + * This routine puts the standard HTML header at the top of the index page. + * We include the DOCTYPE because we may be using features therefrom (i.e., + * HEIGHT and WIDTH attributes on the icons if we're FancyIndexing). + */ +static void emit_preamble(request_rec *r, int xhtml, const char *title) +{ + glusterfs_dir_config_t *d; + + d = (glusterfs_dir_config_t *) ap_get_module_config(r->per_dir_config, + &glusterfs_module); + + if (xhtml) { + ap_rvputs(r, DOCTYPE_XHTML_1_0T, + "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n" + " <head>\n <title>Index of ", title, + "</title>\n", NULL); + } else { + ap_rvputs(r, DOCTYPE_HTML_3_2, + "<html>\n <head>\n" + " <title>Index of ", title, + "</title>\n", NULL); + } + + if (d->style_sheet != NULL) { + ap_rvputs(r, " <link rel=\"stylesheet\" href=\"", d->style_sheet, + "\" type=\"text/css\"", xhtml ? " />\n" : ">\n", NULL); + } + ap_rvputs(r, " </head>\n <body>\n", NULL); +} + + +static const char *cmd_add_alt(cmd_parms *cmd, void *d, const char *alt, + const char *to) +{ + if (cmd->info == BY_PATH) { + if (!strcmp(to, "**DIRECTORY**")) { + to = "^^DIRECTORY^^"; + } + } + if (cmd->info == BY_ENCODING) { + char *tmp = apr_pstrdup(cmd->pool, to); + ap_str_tolower(tmp); + to = tmp; + } + + push_item(((glusterfs_dir_config_t *) d)->alt_list, cmd->info, to, + cmd->path, alt); + return NULL; +} + +static const char *cmd_add_icon(cmd_parms *cmd, void *d, const char *icon, + const char *to) +{ + char *iconbak = apr_pstrdup(cmd->pool, icon); + + if (icon[0] == '(') { + char *alt; + char *cl = strchr(iconbak, ')'); + + if (cl == NULL) { + return "missing closing paren"; + } + alt = ap_getword_nc(cmd->pool, &iconbak, ','); + *cl = '\0'; /* Lose closing paren */ + cmd_add_alt(cmd, d, &alt[1], to); + } + if (cmd->info == BY_PATH) { + if (!strcmp(to, "**DIRECTORY**")) { + to = "^^DIRECTORY^^"; + } + } + if (cmd->info == BY_ENCODING) { + char *tmp = apr_pstrdup(cmd->pool, to); + ap_str_tolower(tmp); + to = tmp; + } + + push_item(((glusterfs_dir_config_t *) d)->icon_list, cmd->info, to, + cmd->path, iconbak); + return NULL; +} + + +static void * +mod_glfs_create_dir_config(apr_pool_t *p, char *dirspec) +{ + glusterfs_dir_config_t *dir_config = NULL; + + dir_config = (glusterfs_dir_config_t *) apr_pcalloc(p, sizeof(*dir_config)); + + dir_config->mount_dir = dirspec; + dir_config->logfile = dir_config->specfile = (char *)0; + dir_config->loglevel = "warning"; + dir_config->handle = (libglusterfs_handle_t) 0; + dir_config->cache_timeout = 0; + dir_config->buf = NULL; + + /* mod_dir options init */ + dir_config->index_names = NULL; + dir_config->do_slash = SLASH_UNSET; + + /* autoindex options init */ + dir_config->icon_width = 0; + dir_config->icon_height = 0; + dir_config->name_width = DEFAULT_NAME_WIDTH; + dir_config->name_adjust = K_UNSET; + dir_config->desc_width = DEFAULT_DESC_WIDTH; + dir_config->desc_adjust = K_UNSET; + dir_config->icon_list = apr_array_make(p, 4, sizeof(struct mod_glfs_ai_item)); + dir_config->alt_list = apr_array_make(p, 4, sizeof(struct mod_glfs_ai_item)); + dir_config->desc_list = apr_array_make(p, 4, sizeof(mod_glfs_ai_desc_t)); + dir_config->ign_list = apr_array_make(p, 4, sizeof(struct mod_glfs_ai_item)); + dir_config->hdr_list = apr_array_make(p, 4, sizeof(struct mod_glfs_ai_item)); + dir_config->rdme_list = apr_array_make(p, 4, sizeof(struct mod_glfs_ai_item)); + dir_config->opts = 0; + dir_config->incremented_opts = 0; + dir_config->decremented_opts = 0; + dir_config->default_keyid = '\0'; + dir_config->default_direction = '\0'; + + return (void *) dir_config; +} + + +static void * +mod_glfs_merge_dir_config(apr_pool_t *p, void *parent_conf, + void *newloc_conf) +{ + glusterfs_dir_config_t *new = (glusterfs_dir_config_t *) + apr_pcalloc(p, sizeof(glusterfs_dir_config_t)); + glusterfs_dir_config_t *add = newloc_conf; + glusterfs_dir_config_t *base = parent_conf; + + if (add->logfile) + new->logfile = apr_pstrdup (p, add->logfile); + + if (add->loglevel) + new->loglevel = apr_pstrdup (p, add->loglevel); + + if (add->specfile) + new->specfile = apr_pstrdup (p, add->specfile); + + if (add->mount_dir) + new->mount_dir = apr_pstrdup (p, add->mount_dir); + + new->xattr_file_size = add->xattr_file_size; + new->cache_timeout = add->cache_timeout; + new->handle = add->handle; + new->buf = add->buf; + + /* mod_dir */ + new->index_names = add->index_names ? add->index_names : base->index_names; + new->do_slash = + (add->do_slash == SLASH_UNSET) ? base->do_slash : add->do_slash; + + /* auto index */ + new->default_icon = add->default_icon ? add->default_icon + : base->default_icon; + new->style_sheet = add->style_sheet ? add->style_sheet + : base->style_sheet; + new->icon_height = add->icon_height ? add->icon_height : base->icon_height; + new->icon_width = add->icon_width ? add->icon_width : base->icon_width; + + new->ctype = add->ctype ? add->ctype : base->ctype; + new->charset = add->charset ? add->charset : base->charset; + + new->alt_list = apr_array_append(p, add->alt_list, base->alt_list); + new->ign_list = apr_array_append(p, add->ign_list, base->ign_list); + new->hdr_list = apr_array_append(p, add->hdr_list, base->hdr_list); + new->desc_list = apr_array_append(p, add->desc_list, base->desc_list); + new->icon_list = apr_array_append(p, add->icon_list, base->icon_list); + new->rdme_list = apr_array_append(p, add->rdme_list, base->rdme_list); + if (add->opts & NO_OPTIONS) { + /* + * If the current directory says 'no options' then we also + * clear any incremental mods from being inheritable further down. + */ + new->opts = NO_OPTIONS; + new->incremented_opts = 0; + new->decremented_opts = 0; + } + else { + /* + * If there were any nonincremental options selected for + * this directory, they dominate and we don't inherit *anything.* + * Contrariwise, we *do* inherit if the only settings here are + * incremental ones. + */ + if (add->opts == 0) { + new->incremented_opts = (base->incremented_opts + | add->incremented_opts) + & ~add->decremented_opts; + new->decremented_opts = (base->decremented_opts + | add->decremented_opts); + /* + * We may have incremental settings, so make sure we don't + * inadvertently inherit an IndexOptions None from above. + */ + new->opts = (base->opts & ~NO_OPTIONS); + } + else { + /* + * There are local nonincremental settings, which clear + * all inheritance from above. They *are* the new base settings. + */ + new->opts = add->opts;; + } + /* + * We're guaranteed that there'll be no overlap between + * the add-options and the remove-options. + */ + new->opts |= new->incremented_opts; + new->opts &= ~new->decremented_opts; + } + /* + * Inherit the NameWidth settings if there aren't any specific to + * the new location; otherwise we'll end up using the defaults set in the + * config-rec creation routine. + */ + if (add->name_adjust == K_UNSET) { + new->name_width = base->name_width; + new->name_adjust = base->name_adjust; + } + else { + new->name_width = add->name_width; + new->name_adjust = add->name_adjust; + } + + /* + * Likewise for DescriptionWidth. + */ + if (add->desc_adjust == K_UNSET) { + new->desc_width = base->desc_width; + new->desc_adjust = base->desc_adjust; + } + else { + new->desc_width = add->desc_width; + new->desc_adjust = add->desc_adjust; + } + + new->default_keyid = add->default_keyid ? add->default_keyid + : base->default_keyid; + new->default_direction = add->default_direction ? add->default_direction + : base->default_direction; + + return (void *) new; +} + + +static void +mod_glfs_child_init(apr_pool_t *p, server_rec *s) +{ + int i; + core_server_config *sconf = NULL; + ap_conf_vector_t **sec_ent = NULL; + glusterfs_dir_config_t *dir_config = NULL; + glusterfs_init_ctx_t ctx; + int num_sec = 0; + + sconf = (core_server_config *) ap_get_module_config (s->module_config, &core_module); + sec_ent = (ap_conf_vector_t **) sconf->sec_url->elts; + num_sec = sconf->sec_url->nelts; + + for (i = 0; i < num_sec; i++) { + dir_config = ap_get_module_config (sec_ent[i], &glusterfs_module); + + if (dir_config) { + memset (&ctx, 0, sizeof (ctx)); + + ctx.logfile = dir_config->logfile; + ctx.loglevel = dir_config->loglevel; + ctx.lookup_timeout = ctx.stat_timeout = dir_config->cache_timeout; + ctx.specfile = dir_config->specfile; + + dir_config->handle = glusterfs_init (&ctx); + if (!dir_config->handle) { + ap_log_error(APLOG_MARK, APLOG_ERR, APR_EGENERAL, s, + "mod_glfs_child_init: glusterfs_init failed, check glusterfs logfile %s for more details", + dir_config->logfile); + } + } + dir_config = NULL; + } +} + + +static void +mod_glfs_child_exit(server_rec *s, apr_pool_t *p) +{ + int i; + core_server_config *sconf = ap_get_module_config(s->module_config, + &core_module); + ap_conf_vector_t **sec_ent = (ap_conf_vector_t **) sconf->sec_url->elts; + glusterfs_dir_config_t *dir_config = NULL; + glusterfs_init_ctx_t ctx; + int num_sec = sconf->sec_url->nelts; + + for (i = 0; i < num_sec; i++) { + dir_config = ap_get_module_config (sec_ent[i], &glusterfs_module); + if (dir_config && dir_config->handle) { + glusterfs_fini (dir_config->handle); + dir_config->handle = 0; + } + dir_config = NULL; + } +} + + +static apr_filetype_e filetype_from_mode(mode_t mode) +{ + apr_filetype_e type = APR_NOFILE; + + if (S_ISREG(mode)) + type = APR_REG; + else if (S_ISDIR(mode)) + type = APR_DIR; + else if (S_ISCHR(mode)) + type = APR_CHR; + else if (S_ISBLK(mode)) + type = APR_BLK; + else if (S_ISFIFO(mode)) + type = APR_PIPE; + else if (S_ISLNK(mode)) + type = APR_LNK; + else if (S_ISSOCK(mode)) + type = APR_SOCK; + else + type = APR_UNKFILE; + return type; +} + + +static void fill_out_finfo(apr_finfo_t *finfo, struct stat *info, + apr_int32_t wanted) +{ + finfo->valid = APR_FINFO_MIN | APR_FINFO_IDENT | APR_FINFO_NLINK + | APR_FINFO_OWNER | APR_FINFO_PROT; + finfo->protection = apr_unix_mode2perms(info->st_mode); + finfo->filetype = filetype_from_mode(info->st_mode); + finfo->user = info->st_uid; + finfo->group = info->st_gid; + finfo->size = info->st_size; + finfo->device = info->st_dev; + finfo->nlink = info->st_nlink; + + /* Check for overflow if storing a 64-bit st_ino in a 32-bit + * apr_ino_t for LFS builds: */ + if (sizeof(apr_ino_t) >= sizeof(info->st_ino) + || (apr_ino_t)info->st_ino == info->st_ino) { + finfo->inode = info->st_ino; + } else { + finfo->valid &= ~APR_FINFO_INODE; + } + + apr_time_ansi_put(&finfo->atime, info->st_atime); +#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC + finfo->atime += info->st_atim.tv_nsec / APR_TIME_C(1000); +#elif defined(HAVE_STRUCT_STAT_ST_ATIMENSEC) + finfo->atime += info->st_atimensec / APR_TIME_C(1000); +#elif defined(HAVE_STRUCT_STAT_ST_ATIME_N) + finfo->ctime += info->st_atime_n / APR_TIME_C(1000); +#endif + + apr_time_ansi_put(&finfo->mtime, info->st_mtime); +#ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC + finfo->mtime += info->st_mtim.tv_nsec / APR_TIME_C(1000); +#elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC) + finfo->mtime += info->st_mtimensec / APR_TIME_C(1000); +#elif defined(HAVE_STRUCT_STAT_ST_MTIME_N) + finfo->ctime += info->st_mtime_n / APR_TIME_C(1000); +#endif + + apr_time_ansi_put(&finfo->ctime, info->st_ctime); +#ifdef HAVE_STRUCT_STAT_ST_CTIM_TV_NSEC + finfo->ctime += info->st_ctim.tv_nsec / APR_TIME_C(1000); +#elif defined(HAVE_STRUCT_STAT_ST_CTIMENSEC) + finfo->ctime += info->st_ctimensec / APR_TIME_C(1000); +#elif defined(HAVE_STRUCT_STAT_ST_CTIME_N) + finfo->ctime += info->st_ctime_n / APR_TIME_C(1000); +#endif + +#ifdef HAVE_STRUCT_STAT_ST_BLOCKS +#ifdef DEV_BSIZE + finfo->csize = (apr_off_t)info->st_blocks * (apr_off_t)DEV_BSIZE; +#else + finfo->csize = (apr_off_t)info->st_blocks * (apr_off_t)512; +#endif + finfo->valid |= APR_FINFO_CSIZE; +#endif +} + + +static int +mod_glfs_map_to_storage(request_rec *r) +{ + glusterfs_dir_config_t *dir_config = NULL, *tmp = NULL; + int access_status; + int ret; + char *path = NULL; + struct stat st = {0, }; + core_server_config *sconf = NULL; + ap_conf_vector_t **sec_ent = NULL; + int num_sec = 0, i = 0; + + sconf = (core_server_config *) ap_get_module_config (r->server->module_config, &core_module); + sec_ent = (ap_conf_vector_t **) sconf->sec_url->elts; + num_sec = sconf->sec_url->nelts; + + for (i = 0; i < num_sec; i++) { + tmp = ap_get_module_config (sec_ent[i], &glusterfs_module); + + if (tmp && !strncmp (tmp->mount_dir, r->uri, strlen (tmp->mount_dir))) { + if (!dir_config || + strlen (tmp->mount_dir) > strlen (dir_config->mount_dir)) { + dir_config = tmp; + } + } + + } + + if (dir_config && dir_config->mount_dir && !(strncmp (apr_pstrcat (r->pool, dir_config->mount_dir, "/", NULL), r->uri, strlen (dir_config->mount_dir) + 1) && !r->handler)) + r->handler = GLUSTERFS_HANDLER; //apr_pstrdup (r->pool, GLUSTERFS_HANDLER); + + if (!r->handler || (r->handler && strcmp (r->handler, GLUSTERFS_HANDLER))) + return DECLINED; + + if (dir_config->mount_dir) + path = r->uri + strlen (dir_config->mount_dir); + + memset (&r->finfo, 0, sizeof (r->finfo)); + + dir_config->buf = calloc (1, dir_config->xattr_file_size); + if (!dir_config->buf) { + return HTTP_INTERNAL_SERVER_ERROR; + } + + if (!dir_config->handle) { + ap_log_rerror(APLOG_MARK, APLOG_ERR, APR_EGENERAL, r, + "mod_glfs_map_to_storage: glusterfs handle is NULL, check glusterfs logfile %s", + dir_config->logfile); + return HTTP_INTERNAL_SERVER_ERROR; + } + + ret = glusterfs_lookup (dir_config->handle, path, dir_config->buf, + dir_config->xattr_file_size, &st); + + if (ret == -1 || st.st_size > dir_config->xattr_file_size || S_ISDIR (st.st_mode)) { + free (dir_config->buf); + dir_config->buf = NULL; + + if (ret == -1) { + int error = HTTP_NOT_FOUND; + char *emsg = NULL; + if (r->path_info == NULL) { + emsg = apr_pstrcat(r->pool, strerror (errno), r->filename, NULL); + } + else { + emsg = apr_pstrcat(r->pool, strerror (errno), r->filename, r->path_info, NULL); + } + ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r, "%s", emsg); + if (errno != ENOENT) { + error = HTTP_INTERNAL_SERVER_ERROR; + } + return error; + } + } + + r->finfo.pool = r->pool; + r->finfo.fname = r->filename; + fill_out_finfo (&r->finfo, &st, + APR_FINFO_MIN | APR_FINFO_IDENT | APR_FINFO_NLINK | APR_FINFO_OWNER | APR_FINFO_PROT); + + /* r->filename = apr_pstrcat (r->pool, r->filename, r->path_info, NULL); */ + + /* allow core module to run directory_walk() and location_walk() */ + return DECLINED; +} + + +static int +mod_glfs_readv_async_cbk (glusterfs_read_buf_t *buf, + void *cbk_data) +{ + glusterfs_async_local_t *local = cbk_data; + + pthread_mutex_lock (&local->lock); + { + local->async_read_complete = 1; + local->buf = buf; + pthread_cond_signal (&local->cond); + } + pthread_mutex_unlock (&local->lock); + + return 0; +} + +/* use read_async just to avoid memcpy of read buffer in libglusterfsclient */ +static int +mod_glfs_read_async (request_rec *r, apr_bucket_brigade *bb, long fd, apr_off_t offset, apr_off_t length) +{ + glusterfs_async_local_t local; + off_t end; + int nbytes; + int complete; + conn_rec *c = r->connection; + apr_bucket *e = NULL; + apr_status_t status; + + if (length == 0) { + return 0; + } + + pthread_cond_init (&local.cond, NULL); + pthread_mutex_init (&local.lock, NULL); + + memset (&local, 0, sizeof (local)); + local.request = r; + + if (length > 0) + end = offset + length; + + do { + glusterfs_read_buf_t *buf; + if (length > 0) { + nbytes = end - offset; + if (nbytes > GLUSTERFS_CHUNK_SIZE) + nbytes = GLUSTERFS_CHUNK_SIZE; + } else + nbytes = GLUSTERFS_CHUNK_SIZE; + + glusterfs_read_async(fd, + nbytes, + offset, + mod_glfs_readv_async_cbk, + (void *)&local); + + pthread_mutex_lock (&local.lock); + { + while (!local.async_read_complete) { + pthread_cond_wait (&local.cond, &local.lock); + } + + local.op_ret = local.buf->op_ret; + local.op_errno = local.buf->op_errno; + + local.async_read_complete = 0; + buf = local.buf; + + if (length < 0) + complete = (local.buf->op_ret <= 0); + else { + local.read_bytes += local.buf->op_ret; + complete = ((local.read_bytes == length) || (local.buf->op_ret < 0)); + } + } + pthread_mutex_unlock (&local.lock); + + if (!bb) { + bb = apr_brigade_create (r->pool, c->bucket_alloc); + } + apr_brigade_writev (bb, NULL, NULL, buf->vector, buf->count); + + /* make sure all the data is written out, since we call glusterfs_free on buf once + ap_pass_brigade returns */ + e = apr_bucket_flush_create (c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL (bb, e); + + status = ap_pass_brigade (r->output_filters, bb); + if (status != APR_SUCCESS) { + /* no way to know what type of error occurred */ + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, + "mod_glfs_handler: ap_pass_brigade returned %i", + status); + complete = 1; + local.op_ret = -1; + } + + glusterfs_free (buf); + + /* bb has already been cleaned up by core_output_filter, just being paranoid */ + apr_brigade_cleanup (bb); + + offset += nbytes; + } while (!complete); + + return (local.op_ret < 0 ? HTTP_INTERNAL_SERVER_ERROR : OK); +} + +/* TODO: to read blocks of size "length" from offset "offset" */ +/* + static int + mod_glfs_read_sync (request_rec *r, int fd, off_t offset, off_t length) + { + int error = OK; + off_t read_bytes; + char buf [GLUSTERFS_CHUNK_SIZE]; + + while ((read_bytes = glusterfs_read (fd, buf, GLUSTERFS_CHUNK_SIZE)) && read_bytes != -1) { + ap_rwrite (buf, read_bytes, r); + } + if (read_bytes) { + error = SERVER_ERROR; + } + return error; + } +*/ + + +static int +parse_byterange(char *range, apr_off_t clength, + apr_off_t *start, apr_off_t *end) +{ + char *dash = strchr(range, '-'); + char *errp; + apr_off_t number; + + if (!dash) { + return 0; + } + + if ((dash == range)) { + /* In the form "-5" */ + if (apr_strtoff(&number, dash+1, &errp, 10) || *errp) { + return 0; + } + *start = clength - number; + *end = clength - 1; + } + else { + *dash++ = '\0'; + if (apr_strtoff(&number, range, &errp, 10) || *errp) { + return 0; + } + *start = number; + if (*dash) { + if (apr_strtoff(&number, dash, &errp, 10) || *errp) { + return 0; + } + *end = number; + } + else { /* "5-" */ + *end = clength - 1; + } + } + + if (*start < 0) { + *start = 0; + } + + if (*end >= clength) { + *end = clength - 1; + } + + if (*start > *end) { + return -1; + } + + return (*start > 0 || *end < clength); +} + + +static int use_range_x(request_rec *r) +{ + const char *ua; + return (apr_table_get(r->headers_in, "Request-Range") + || ((ua = apr_table_get(r->headers_in, "User-Agent")) + && ap_strstr_c(ua, "MSIE 3"))); +} + + +static int ap_set_byterange(request_rec *r) +{ + const char *range; + const char *if_range; + const char *match; + const char *ct; + int num_ranges; + + if (r->assbackwards) { + return 0; + } + + /* Check for Range request-header (HTTP/1.1) or Request-Range for + * backwards-compatibility with second-draft Luotonen/Franks + * byte-ranges (e.g. Netscape Navigator 2-3). + * + * We support this form, with Request-Range, and (farther down) we + * send multipart/x-byteranges instead of multipart/byteranges for + * Request-Range based requests to work around a bug in Netscape + * Navigator 2-3 and MSIE 3. + */ + + if (!(range = apr_table_get(r->headers_in, "Range"))) { + range = apr_table_get(r->headers_in, "Request-Range"); + } + + if (!range || strncasecmp(range, "bytes=", 6) || r->status != HTTP_OK) { + return 0; + } + + /* is content already a single range? */ + if (apr_table_get(r->headers_out, "Content-Range")) { + return 0; + } + + /* is content already a multiple range? */ + if ((ct = apr_table_get(r->headers_out, "Content-Type")) + && (!strncasecmp(ct, "multipart/byteranges", 20) + || !strncasecmp(ct, "multipart/x-byteranges", 22))) { + return 0; + } + + /* Check the If-Range header for Etag or Date. + * Note that this check will return false (as required) if either + * of the two etags are weak. + */ + if ((if_range = apr_table_get(r->headers_in, "If-Range"))) { + if (if_range[0] == '"') { + if (!(match = apr_table_get(r->headers_out, "Etag")) + || (strcmp(if_range, match) != 0)) { + return 0; + } + } + else if (!(match = apr_table_get(r->headers_out, "Last-Modified")) + || (strcmp(if_range, match) != 0)) { + return 0; + } + } + + if (!ap_strchr_c(range, ',')) { + /* a single range */ + num_ranges = 1; + } + else { + /* a multiple range */ + num_ranges = 2; + } + + r->status = HTTP_PARTIAL_CONTENT; + r->range = range + 6; + + return num_ranges; +} + + +static void +mod_glfs_handle_byte_ranges (request_rec *r, long fd, int num_ranges) +{ + conn_rec *c = r->connection; + char *boundary = NULL, *bound_head = NULL; + const char *orig_ct = NULL; + apr_bucket_brigade *bsend = NULL; + apr_bucket *e = NULL; + apr_off_t range_start; + apr_off_t range_end; + char *current = NULL; + apr_status_t rv; + char found = 0; + + orig_ct = ap_make_content_type (r, r->content_type); + + if (num_ranges > 1) { + boundary = apr_psprintf(r->pool, "%" APR_UINT64_T_HEX_FMT "%lx", + (apr_uint64_t)r->request_time, (long) getpid()); + + ap_set_content_type(r, apr_pstrcat(r->pool, "multipart", + use_range_x(r) ? "/x-" : "/", + "byteranges; boundary=", + boundary, NULL)); + + if (strcasecmp(orig_ct, NO_CONTENT_TYPE)) { + bound_head = apr_pstrcat(r->pool, + CRLF "--", boundary, + CRLF "Content-type: ", + orig_ct, + CRLF "Content-range: bytes ", + NULL); + } + else { + /* if we have no type for the content, do our best */ + bound_head = apr_pstrcat(r->pool, + CRLF "--", boundary, + CRLF "Content-range: bytes ", + NULL); + } +// ap_xlate_proto_to_ascii(bound_head, strlen(bound_head)); + } + + while ((current = ap_getword(r->pool, &r->range, ',')) + && (rv = parse_byterange(current, r->finfo.size, &range_start, + &range_end))) { + apr_bucket *e2; + apr_bucket *ec; + + bsend = NULL; + if (rv == -1) { + continue; + } + + found = 1; + + /* For single range requests, we must produce Content-Range header. + * Otherwise, we need to produce the multipart boundaries. + */ + if (num_ranges == 1) { + apr_table_setn(r->headers_out, "Content-Range", + apr_psprintf(r->pool, "bytes " BYTERANGE_FMT, + range_start, range_end, r->finfo.size)); + } + else { + char *ts; + /* this brigade holds what we will be sending */ + bsend = apr_brigade_create(r->pool, c->bucket_alloc); + + e = apr_bucket_pool_create(bound_head, strlen(bound_head), + r->pool, c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(bsend, e); + + ts = apr_psprintf(r->pool, BYTERANGE_FMT CRLF CRLF, + range_start, range_end, r->finfo.size); +// ap_xlate_proto_to_ascii(ts, strlen(ts)); + e = apr_bucket_pool_create(ts, strlen(ts), r->pool, + c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(bsend, e); + } + mod_glfs_read_async (r, bsend, fd, range_start, (range_end + 1 - range_start)); + } + + bsend = apr_brigade_create (r->pool, c->bucket_alloc); + + if (found == 0) { + r->status = HTTP_OK; + /* bsend is assumed to be empty if we get here. */ + e = ap_bucket_error_create(HTTP_RANGE_NOT_SATISFIABLE, NULL, + r->pool, c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(bsend, e); + e = apr_bucket_eos_create(c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(bsend, e); + ap_pass_brigade (r->output_filters, bsend); + return; + } + + if (num_ranges > 1) { + char *end; + + /* add the final boundary */ + end = apr_pstrcat(r->pool, CRLF "--", boundary, "--" CRLF, NULL); +// ap_xlate_proto_to_ascii(end, strlen(end)); + e = apr_bucket_pool_create(end, strlen(end), r->pool, c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(bsend, e); + } + + ap_pass_brigade (r->output_filters, bsend); +} + + + +/**************************************************************** + * + * Looking things up in config entries... + */ + +/* Structure used to hold entries when we're actually building an index */ + +struct ent { + char *name; + char *icon; + char *alt; + char *desc; + apr_off_t size; + apr_time_t lm; + struct ent *next; + int ascending, ignore_case, version_sort; + char key; + int isdir; +}; + +static char *find_item(request_rec *r, apr_array_header_t *list, int path_only) +{ + const char *content_type = ap_field_noparam(r->pool, r->content_type); + const char *content_encoding = r->content_encoding; + char *path = r->filename; + + struct mod_glfs_ai_item *items = (struct mod_glfs_ai_item *) list->elts; + int i; + + for (i = 0; i < list->nelts; ++i) { + struct mod_glfs_ai_item *p = &items[i]; + + /* Special cased for ^^DIRECTORY^^ and ^^BLANKICON^^ */ + if ((path[0] == '^') || (!ap_strcmp_match(path, p->apply_path))) { + if (!*(p->apply_to)) { + return p->data; + } + else if (p->type == BY_PATH || path[0] == '^') { + if (!ap_strcmp_match(path, p->apply_to)) { + return p->data; + } + } + else if (!path_only) { + if (!content_encoding) { + if (p->type == BY_TYPE) { + if (content_type + && !ap_strcasecmp_match(content_type, + p->apply_to)) { + return p->data; + } + } + } + else { + if (p->type == BY_ENCODING) { + if (!ap_strcasecmp_match(content_encoding, + p->apply_to)) { + return p->data; + } + } + } + } + } + } + return NULL; +} + +#define find_icon(d,p,t) find_item(p,d->icon_list,t) +#define find_alt(d,p,t) find_item(p,d->alt_list,t) +#define find_header(d,p) find_item(p,d->hdr_list,0) +#define find_readme(d,p) find_item(p,d->rdme_list,0) + +static char *find_default_item(char *bogus_name, apr_array_header_t *list) +{ + request_rec r; + /* Bleah. I tried to clean up find_item, and it lead to this bit + * of ugliness. Note that the fields initialized are precisely + * those that find_item looks at... + */ + r.filename = bogus_name; + r.content_type = r.content_encoding = NULL; + return find_item(&r, list, 1); +} + +#define find_default_icon(d,n) find_default_item(n, d->icon_list) +#define find_default_alt(d,n) find_default_item(n, d->alt_list) + +/* + * Look through the list of pattern/description pairs and return the first one + * if any) that matches the filename in the request. If multiple patterns + * match, only the first one is used; since the order in the array is the + * same as the order in which directives were processed, earlier matching + * directives will dominate. + */ + +#ifdef CASE_BLIND_FILESYSTEM +#define MATCH_FLAGS APR_FNM_CASE_BLIND +#else +#define MATCH_FLAGS 0 +#endif + +static char *find_desc(glusterfs_dir_config_t *dcfg, const char *filename_full) +{ + int i; + mod_glfs_ai_desc_t *list = (mod_glfs_ai_desc_t *) dcfg->desc_list->elts; + const char *filename_only; + const char *filename; + + /* + * If the filename includes a path, extract just the name itself + * for the simple matches. + */ + if ((filename_only = ap_strrchr_c(filename_full, '/')) == NULL) { + filename_only = filename_full; + } + else { + filename_only++; + } + for (i = 0; i < dcfg->desc_list->nelts; ++i) { + mod_glfs_ai_desc_t *tuple = &list[i]; + int found; + + /* + * Only use the full-path filename if the pattern contains '/'s. + */ + filename = (tuple->full_path) ? filename_full : filename_only; + /* + * Make the comparison using the cheapest method; only do + * wildcard checking if we must. + */ + if (tuple->wildcards) { + found = (apr_fnmatch(tuple->pattern, filename, MATCH_FLAGS) == 0); + } + else { + found = (ap_strstr_c(filename, tuple->pattern) != NULL); + } + if (found) { + return tuple->description; + } + } + return NULL; +} + +static int ignore_entry(glusterfs_dir_config_t *d, char *path) +{ + apr_array_header_t *list = d->ign_list; + struct mod_glfs_ai_item *items = (struct mod_glfs_ai_item *) list->elts; + char *tt; + int i; + + if ((tt = strrchr(path, '/')) == NULL) { + tt = path; + } + else { + tt++; + } + + for (i = 0; i < list->nelts; ++i) { + struct mod_glfs_ai_item *p = &items[i]; + char *ap; + + if ((ap = strrchr(p->apply_to, '/')) == NULL) { + ap = p->apply_to; + } + else { + ap++; + } + +#ifndef CASE_BLIND_FILESYSTEM + if (!ap_strcmp_match(path, p->apply_path) + && !ap_strcmp_match(tt, ap)) { + return 1; + } +#else /* !CASE_BLIND_FILESYSTEM */ + /* + * On some platforms, the match must be case-blind. This is really + * a factor of the filesystem involved, but we can't detect that + * reliably - so we have to granularise at the OS level. + */ + if (!ap_strcasecmp_match(path, p->apply_path) + && !ap_strcasecmp_match(tt, ap)) { + return 1; + } +#endif /* !CASE_BLIND_FILESYSTEM */ + } + return 0; +} + +/***************************************************************** + * + * Actually generating output + */ + +/* + * Elements of the emitted document: + * Preamble + * Emitted unless SUPPRESS_PREAMBLE is set AND ap_run_sub_req + * succeeds for the (content_type == text/html) header file. + * Header file + * Emitted if found (and able). + * H1 tag line + * Emitted if a header file is NOT emitted. + * Directory stuff + * Always emitted. + * HR + * Emitted if FANCY_INDEXING is set. + * Readme file + * Emitted if found (and able). + * ServerSig + * Emitted if ServerSignature is not Off AND a readme file + * is NOT emitted. + * Postamble + * Emitted unless SUPPRESS_PREAMBLE is set AND ap_run_sub_req + * succeeds for the (content_type == text/html) readme file. + */ + + +/* + * emit a plain text file + */ +static void do_emit_plain(request_rec *r, apr_file_t *f) +{ + char buf[AP_IOBUFSIZE + 1]; + int ch; + apr_size_t i, c, n; + apr_status_t rv; + + ap_rputs("<pre>\n", r); + while (!apr_file_eof(f)) { + do { + n = sizeof(char) * AP_IOBUFSIZE; + rv = apr_file_read(f, buf, &n); + } while (APR_STATUS_IS_EINTR(rv)); + if (n == 0 || rv != APR_SUCCESS) { + /* ###: better error here? */ + break; + } + buf[n] = '\0'; + c = 0; + while (c < n) { + for (i = c; i < n; i++) { + if (buf[i] == '<' || buf[i] == '>' || buf[i] == '&') { + break; + } + } + ch = buf[i]; + buf[i] = '\0'; + ap_rputs(&buf[c], r); + if (ch == '<') { + ap_rputs("<", r); + } + else if (ch == '>') { + ap_rputs(">", r); + } + else if (ch == '&') { + ap_rputs("&", r); + } + c = i + 1; + } + } + ap_rputs("</pre>\n", r); +} + +/* + * Handle the preamble through the H1 tag line, inclusive. Locate + * the file with a subrequests. Process text/html documents by actually + * running the subrequest; text/xxx documents get copied verbatim, + * and any other content type is ignored. This means that a non-text + * document (such as HEADER.gif) might get multiviewed as the result + * instead of a text document, meaning nothing will be displayed, but + * oh well. + */ +static void emit_head(request_rec *r, char *header_fname, int suppress_amble, + int emit_xhtml, char *title) +{ + apr_table_t *hdrs = r->headers_in; + apr_file_t *f = NULL; + request_rec *rr = NULL; + int emit_amble = 1; + int emit_H1 = 1; + const char *r_accept; + const char *r_accept_enc; + + /* + * If there's a header file, send a subrequest to look for it. If it's + * found and html do the subrequest, otherwise handle it + */ + r_accept = apr_table_get(hdrs, "Accept"); + r_accept_enc = apr_table_get(hdrs, "Accept-Encoding"); + apr_table_setn(hdrs, "Accept", "text/html, text/plain"); + apr_table_unset(hdrs, "Accept-Encoding"); + + + if ((header_fname != NULL) && r->args) { + header_fname = apr_pstrcat(r->pool, header_fname, "?", r->args, NULL); + } + + if ((header_fname != NULL) + && (rr = ap_sub_req_lookup_uri(header_fname, r, r->output_filters)) + && (rr->status == HTTP_OK) + && (rr->filename != NULL) + && (rr->finfo.filetype == APR_REG)) { + /* + * Check for the two specific cases we allow: text/html and + * text/anything-else. The former is allowed to be processed for + * SSIs. + */ + if (rr->content_type != NULL) { + if (!strcasecmp(ap_field_noparam(r->pool, rr->content_type), + "text/html")) { + ap_filter_t *f; + /* Hope everything will work... */ + emit_amble = 0; + emit_H1 = 0; + + if (! suppress_amble) { + emit_preamble(r, emit_xhtml, title); + } + /* This is a hack, but I can't find any better way to do this. + * The problem is that we have already created the sub-request, + * but we just inserted the OLD_WRITE filter, and the + * sub-request needs to pass its data through the OLD_WRITE + * filter, or things go horribly wrong (missing data, data in + * the wrong order, etc). To fix it, if you create a + * sub-request and then insert the OLD_WRITE filter before you + * run the request, you need to make sure that the sub-request + * data goes through the OLD_WRITE filter. Just steal this + * code. The long-term solution is to remove the ap_r* + * functions. + */ + for (f=rr->output_filters; + f->frec != ap_subreq_core_filter_handle; f = f->next); + f->next = r->output_filters; + + /* + * If there's a problem running the subrequest, display the + * preamble if we didn't do it before -- the header file + * didn't get displayed. + */ + if (ap_run_sub_req(rr) != OK) { + /* It didn't work */ + emit_amble = suppress_amble; + emit_H1 = 1; + } + } + else if (!strncasecmp("text/", rr->content_type, 5)) { + /* + * If we can open the file, prefix it with the preamble + * regardless; since we'll be sending a <pre> block around + * the file's contents, any HTML header it had won't end up + * where it belongs. + */ + if (apr_file_open(&f, rr->filename, APR_READ, + APR_OS_DEFAULT, r->pool) == APR_SUCCESS) { + emit_preamble(r, emit_xhtml, title); + emit_amble = 0; + do_emit_plain(r, f); + apr_file_close(f); + emit_H1 = 0; + } + } + } + } + + if (r_accept) { + apr_table_setn(hdrs, "Accept", r_accept); + } + else { + apr_table_unset(hdrs, "Accept"); + } + + if (r_accept_enc) { + apr_table_setn(hdrs, "Accept-Encoding", r_accept_enc); + } + + if (emit_amble) { + emit_preamble(r, emit_xhtml, title); + } + if (emit_H1) { + ap_rvputs(r, "<h1>Index of ", title, "</h1>\n", NULL); + } + if (rr != NULL) { + ap_destroy_sub_req(rr); + } +} + + +/* + * Handle the Readme file through the postamble, inclusive. Locate + * the file with a subrequests. Process text/html documents by actually + * running the subrequest; text/xxx documents get copied verbatim, + * and any other content type is ignored. This means that a non-text + * document (such as FOOTER.gif) might get multiviewed as the result + * instead of a text document, meaning nothing will be displayed, but + * oh well. + */ +static void emit_tail(request_rec *r, char *readme_fname, int suppress_amble) +{ + apr_file_t *f = NULL; + request_rec *rr = NULL; + int suppress_post = 0; + int suppress_sig = 0; + + /* + * If there's a readme file, send a subrequest to look for it. If it's + * found and a text file, handle it -- otherwise fall through and + * pretend there's nothing there. + */ + if ((readme_fname != NULL) + && (rr = ap_sub_req_lookup_uri(readme_fname, r, r->output_filters)) + && (rr->status == HTTP_OK) + && (rr->filename != NULL) + && rr->finfo.filetype == APR_REG) { + /* + * Check for the two specific cases we allow: text/html and + * text/anything-else. The former is allowed to be processed for + * SSIs. + */ + if (rr->content_type != NULL) { + if (!strcasecmp(ap_field_noparam(r->pool, rr->content_type), + "text/html")) { + ap_filter_t *f; + for (f=rr->output_filters; + f->frec != ap_subreq_core_filter_handle; f = f->next); + f->next = r->output_filters; + + + if (ap_run_sub_req(rr) == OK) { + /* worked... */ + suppress_sig = 1; + suppress_post = suppress_amble; + } + } + else if (!strncasecmp("text/", rr->content_type, 5)) { + /* + * If we can open the file, suppress the signature. + */ + if (apr_file_open(&f, rr->filename, APR_READ, + APR_OS_DEFAULT, r->pool) == APR_SUCCESS) { + do_emit_plain(r, f); + apr_file_close(f); + suppress_sig = 1; + } + } + } + } + + if (!suppress_sig) { + ap_rputs(ap_psignature("", r), r); + } + if (!suppress_post) { + ap_rputs("</body></html>\n", r); + } + if (rr != NULL) { + ap_destroy_sub_req(rr); + } +} + + +static char *find_title(request_rec *r) +{ + char titlebuf[MAX_STRING_LEN], *find = "<title>"; + apr_file_t *thefile = NULL; + int x, y, p; + apr_size_t n; + + if (r->status != HTTP_OK) { + return NULL; + } + if ((r->content_type != NULL) + && (!strcasecmp(ap_field_noparam(r->pool, r->content_type), + "text/html") + || !strcmp(r->content_type, INCLUDES_MAGIC_TYPE)) + && !r->content_encoding) { + if (apr_file_open(&thefile, r->filename, APR_READ, + APR_OS_DEFAULT, r->pool) != APR_SUCCESS) { + return NULL; + } + n = sizeof(char) * (MAX_STRING_LEN - 1); + apr_file_read(thefile, titlebuf, &n); + if (n <= 0) { + apr_file_close(thefile); + return NULL; + } + titlebuf[n] = '\0'; + for (x = 0, p = 0; titlebuf[x]; x++) { + if (apr_tolower(titlebuf[x]) == find[p]) { + if (!find[++p]) { + if ((p = ap_ind(&titlebuf[++x], '<')) != -1) { + titlebuf[x + p] = '\0'; + } + /* Scan for line breaks for Tanmoy's secretary */ + for (y = x; titlebuf[y]; y++) { + if ((titlebuf[y] == CR) || (titlebuf[y] == LF)) { + if (y == x) { + x++; + } + else { + titlebuf[y] = ' '; + } + } + } + apr_file_close(thefile); + return apr_pstrdup(r->pool, &titlebuf[x]); + } + } + else { + p = 0; + } + } + apr_file_close(thefile); + } + return NULL; +} + +static struct ent *make_parent_entry(apr_int32_t autoindex_opts, + glusterfs_dir_config_t *d, + request_rec *r, char keyid, + char direction) +{ + struct ent *p = (struct ent *) apr_pcalloc(r->pool, sizeof(struct ent)); + char *testpath; + /* + * p->name is now the true parent URI. + * testpath is a crafted lie, so that the syntax '/some/..' + * (or simply '..')be used to describe 'up' from '/some/' + * when processeing IndexIgnore, and Icon|Alt|Desc configs. + */ + + /* The output has always been to the parent. Don't make ourself + * our own parent (worthless cyclical reference). + */ + if (!(p->name = ap_make_full_path(r->pool, r->uri, "../"))) { + return (NULL); + } + ap_getparents(p->name); + if (!*p->name) { + return (NULL); + } + + /* IndexIgnore has always compared "/thispath/.." */ + testpath = ap_make_full_path(r->pool, r->filename, ".."); + if (ignore_entry(d, testpath)) { + return (NULL); + } + + p->size = -1; + p->lm = -1; + p->key = apr_toupper(keyid); + p->ascending = (apr_toupper(direction) == D_ASCENDING); + p->version_sort = autoindex_opts & VERSION_SORT; + if (autoindex_opts & FANCY_INDEXING) { + if (!(p->icon = find_default_icon(d, testpath))) { + p->icon = find_default_icon(d, "^^DIRECTORY^^"); + } + if (!(p->alt = find_default_alt(d, testpath))) { + if (!(p->alt = find_default_alt(d, "^^DIRECTORY^^"))) { + p->alt = "DIR"; + } + } + p->desc = find_desc(d, testpath); + } + return p; +} + +static struct ent *make_autoindex_entry(const apr_finfo_t *dirent, + int autoindex_opts, + glusterfs_dir_config_t *d, + request_rec *r, char keyid, + char direction, + const char *pattern) +{ + request_rec *rr; + struct ent *p; + int show_forbidden = 0; + + /* Dot is ignored, Parent is handled by make_parent_entry() */ + if ((dirent->name[0] == '.') && (!dirent->name[1] + || ((dirent->name[1] == '.') && !dirent->name[2]))) + return (NULL); + + /* + * On some platforms, the match must be case-blind. This is really + * a factor of the filesystem involved, but we can't detect that + * reliably - so we have to granularise at the OS level. + */ + if (pattern && (apr_fnmatch(pattern, dirent->name, + APR_FNM_NOESCAPE | APR_FNM_PERIOD +#ifdef CASE_BLIND_FILESYSTEM + | APR_FNM_CASE_BLIND +#endif + ) + != APR_SUCCESS)) { + return (NULL); + } + + if (ignore_entry(d, ap_make_full_path(r->pool, + r->filename, dirent->name))) { + return (NULL); + } + + if (!(rr = ap_sub_req_lookup_dirent(dirent, r, AP_SUBREQ_NO_ARGS, NULL))) { + return (NULL); + } + + if((autoindex_opts & SHOW_FORBIDDEN) + && (rr->status == HTTP_UNAUTHORIZED || rr->status == HTTP_FORBIDDEN)) { + show_forbidden = 1; + } + + if ((rr->finfo.filetype != APR_DIR && rr->finfo.filetype != APR_REG) + || !(rr->status == OK || ap_is_HTTP_SUCCESS(rr->status) + || ap_is_HTTP_REDIRECT(rr->status) + || show_forbidden == 1)) { + ap_destroy_sub_req(rr); + return (NULL); + } + + p = (struct ent *) apr_pcalloc(r->pool, sizeof(struct ent)); + if (dirent->filetype == APR_DIR) { + p->name = apr_pstrcat(r->pool, dirent->name, "/", NULL); + } + else { + p->name = apr_pstrdup(r->pool, dirent->name); + } + p->size = -1; + p->icon = NULL; + p->alt = NULL; + p->desc = NULL; + p->lm = -1; + p->isdir = 0; + p->key = apr_toupper(keyid); + p->ascending = (apr_toupper(direction) == D_ASCENDING); + p->version_sort = !!(autoindex_opts & VERSION_SORT); + p->ignore_case = !!(autoindex_opts & IGNORE_CASE); + + if (autoindex_opts & (FANCY_INDEXING | TABLE_INDEXING)) { + p->lm = rr->finfo.mtime; + if (dirent->filetype == APR_DIR) { + if (autoindex_opts & FOLDERS_FIRST) { + p->isdir = 1; + } + rr->filename = ap_make_dirstr_parent (rr->pool, rr->filename); + + /* omit the trailing slash (1.3 compat) */ + rr->filename[strlen(rr->filename) - 1] = '\0'; + + if (!(p->icon = find_icon(d, rr, 1))) { + p->icon = find_default_icon(d, "^^DIRECTORY^^"); + } + if (!(p->alt = find_alt(d, rr, 1))) { + if (!(p->alt = find_default_alt(d, "^^DIRECTORY^^"))) { + p->alt = "DIR"; + } + } + } + else { + p->icon = find_icon(d, rr, 0); + p->alt = find_alt(d, rr, 0); + p->size = rr->finfo.size; + } + + p->desc = find_desc(d, rr->filename); + + if ((!p->desc) && (autoindex_opts & SCAN_HTML_TITLES)) { + p->desc = apr_pstrdup(r->pool, find_title(rr)); + } + } + ap_destroy_sub_req(rr); + /* + * We don't need to take any special action for the file size key. + * If we did, it would go here. + */ + if (keyid == K_LAST_MOD) { + if (p->lm < 0) { + p->lm = 0; + } + } + return (p); +} + +static char *terminate_description(glusterfs_dir_config_t *d, char *desc, + apr_int32_t autoindex_opts, int desc_width) +{ + int maxsize = desc_width; + register int x; + + /* + * If there's no DescriptionWidth in effect, default to the old + * behaviour of adjusting the description size depending upon + * what else is being displayed. Otherwise, stick with the + * setting. + */ + if (d->desc_adjust == K_UNSET) { + if (autoindex_opts & SUPPRESS_ICON) { + maxsize += 6; + } + if (autoindex_opts & SUPPRESS_LAST_MOD) { + maxsize += 19; + } + if (autoindex_opts & SUPPRESS_SIZE) { + maxsize += 7; + } + } + for (x = 0; desc[x] && ((maxsize > 0) || (desc[x] == '<')); x++) { + if (desc[x] == '<') { + while (desc[x] != '>') { + if (!desc[x]) { + maxsize = 0; + break; + } + ++x; + } + } + else if (desc[x] == '&') { + /* entities like ä count as one character */ + --maxsize; + for ( ; desc[x] != ';'; ++x) { + if (desc[x] == '\0') { + maxsize = 0; + break; + } + } + } + else { + --maxsize; + } + } + if (!maxsize && desc[x] != '\0') { + desc[x - 1] = '>'; /* Grump. */ + desc[x] = '\0'; /* Double Grump! */ + } + return desc; +} + +/* + * Emit the anchor for the specified field. If a field is the key for the + * current request, the link changes its meaning to reverse the order when + * selected again. Non-active fields always start in ascending order. + */ +static void emit_link(request_rec *r, const char *anchor, char column, + char curkey, char curdirection, + const char *colargs, int nosort) +{ + if (!nosort) { + char qvalue[9]; + + qvalue[0] = '?'; + qvalue[1] = 'C'; + qvalue[2] = '='; + qvalue[3] = column; + qvalue[4] = ';'; + qvalue[5] = 'O'; + qvalue[6] = '='; + /* reverse? */ + qvalue[7] = ((curkey == column) && (curdirection == D_ASCENDING)) + ? D_DESCENDING : D_ASCENDING; + qvalue[8] = '\0'; + ap_rvputs(r, "<a href=\"", qvalue, colargs ? colargs : "", + "\">", anchor, "</a>", NULL); + } + else { + ap_rputs(anchor, r); + } +} + +static void output_directories(struct ent **ar, int n, + glusterfs_dir_config_t *d, request_rec *r, + apr_int32_t autoindex_opts, char keyid, + char direction, const char *colargs) +{ + int x; + apr_size_t rv; + char *name = r->uri; + char *tp; + int static_columns = !!(autoindex_opts & SUPPRESS_COLSORT); + apr_pool_t *scratch; + int name_width; + int desc_width; + char *name_scratch; + char *pad_scratch; + char *breakrow = ""; + + apr_pool_create(&scratch, r->pool); + if (name[0] == '\0') { + name = "/"; + } + + name_width = d->name_width; + desc_width = d->desc_width; + + if ((autoindex_opts & (FANCY_INDEXING | TABLE_INDEXING)) + == FANCY_INDEXING) { + if (d->name_adjust == K_ADJUST) { + for (x = 0; x < n; x++) { + int t = strlen(ar[x]->name); + if (t > name_width) { + name_width = t; + } + } + } + + if (d->desc_adjust == K_ADJUST) { + for (x = 0; x < n; x++) { + if (ar[x]->desc != NULL) { + int t = strlen(ar[x]->desc); + if (t > desc_width) { + desc_width = t; + } + } + } + } + } + name_scratch = apr_palloc(r->pool, name_width + 1); + pad_scratch = apr_palloc(r->pool, name_width + 1); + memset(pad_scratch, ' ', name_width); + pad_scratch[name_width] = '\0'; + + if (autoindex_opts & TABLE_INDEXING) { + int cols = 1; + ap_rputs("<table><tr>", r); + if (!(autoindex_opts & SUPPRESS_ICON)) { + ap_rputs("<th>", r); + if ((tp = find_default_icon(d, "^^BLANKICON^^"))) { + ap_rvputs(r, "<img src=\"", ap_escape_html(scratch, tp), + "\" alt=\"[ICO]\"", NULL); + if (d->icon_width) { + ap_rprintf(r, " width=\"%d\"", d->icon_width); + } + if (d->icon_height) { + ap_rprintf(r, " height=\"%d\"", d->icon_height); + } + + if (autoindex_opts & EMIT_XHTML) { + ap_rputs(" /", r); + } + ap_rputs("></th>", r); + } + else { + ap_rputs(" </th>", r); + } + + ++cols; + } + ap_rputs("<th>", r); + emit_link(r, "Name", K_NAME, keyid, direction, + colargs, static_columns); + if (!(autoindex_opts & SUPPRESS_LAST_MOD)) { + ap_rputs("</th><th>", r); + emit_link(r, "Last modified", K_LAST_MOD, keyid, direction, + colargs, static_columns); + ++cols; + } + if (!(autoindex_opts & SUPPRESS_SIZE)) { + ap_rputs("</th><th>", r); + emit_link(r, "Size", K_SIZE, keyid, direction, + colargs, static_columns); + ++cols; + } + if (!(autoindex_opts & SUPPRESS_DESC)) { + ap_rputs("</th><th>", r); + emit_link(r, "Description", K_DESC, keyid, direction, + colargs, static_columns); + ++cols; + } + if (!(autoindex_opts & SUPPRESS_RULES)) { + breakrow = apr_psprintf(r->pool, + "<tr><th colspan=\"%d\">" + "<hr%s></th></tr>\n", cols, + (autoindex_opts & EMIT_XHTML) ? " /" : ""); + } + ap_rvputs(r, "</th></tr>", breakrow, NULL); + } + else if (autoindex_opts & FANCY_INDEXING) { + ap_rputs("<pre>", r); + if (!(autoindex_opts & SUPPRESS_ICON)) { + if ((tp = find_default_icon(d, "^^BLANKICON^^"))) { + ap_rvputs(r, "<img src=\"", ap_escape_html(scratch, tp), + "\" alt=\"Icon \"", NULL); + if (d->icon_width) { + ap_rprintf(r, " width=\"%d\"", d->icon_width); + } + if (d->icon_height) { + ap_rprintf(r, " height=\"%d\"", d->icon_height); + } + + if (autoindex_opts & EMIT_XHTML) { + ap_rputs(" /", r); + } + ap_rputs("> ", r); + } + else { + ap_rputs(" ", r); + } + } + emit_link(r, "Name", K_NAME, keyid, direction, + colargs, static_columns); + ap_rputs(pad_scratch + 4, r); + /* + * Emit the guaranteed-at-least-one-space-between-columns byte. + */ + ap_rputs(" ", r); + if (!(autoindex_opts & SUPPRESS_LAST_MOD)) { + emit_link(r, "Last modified", K_LAST_MOD, keyid, direction, + colargs, static_columns); + ap_rputs(" ", r); + } + if (!(autoindex_opts & SUPPRESS_SIZE)) { + emit_link(r, "Size", K_SIZE, keyid, direction, + colargs, static_columns); + ap_rputs(" ", r); + } + if (!(autoindex_opts & SUPPRESS_DESC)) { + emit_link(r, "Description", K_DESC, keyid, direction, + colargs, static_columns); + } + if (!(autoindex_opts & SUPPRESS_RULES)) { + ap_rputs("<hr", r); + if (autoindex_opts & EMIT_XHTML) { + ap_rputs(" /", r); + } + ap_rputs(">", r); + } + else { + ap_rputc('\n', r); + } + } + else { + ap_rputs("<ul>", r); + } + + for (x = 0; x < n; x++) { + char *anchor, *t, *t2; + int nwidth; + + apr_pool_clear(scratch); + + t = ar[x]->name; + anchor = ap_escape_html(scratch, ap_os_escape_path(scratch, t, 0)); + + if (!x && t[0] == '/') { + t2 = "Parent Directory"; + } + else { + t2 = t; + } + + if (autoindex_opts & TABLE_INDEXING) { + ap_rputs("<tr>", r); + if (!(autoindex_opts & SUPPRESS_ICON)) { + ap_rputs("<td valign=\"top\">", r); + if (autoindex_opts & ICONS_ARE_LINKS) { + ap_rvputs(r, "<a href=\"", anchor, "\">", NULL); + } + if ((ar[x]->icon) || d->default_icon) { + ap_rvputs(r, "<img src=\"", + ap_escape_html(scratch, + ar[x]->icon ? ar[x]->icon + : d->default_icon), + "\" alt=\"[", (ar[x]->alt ? ar[x]->alt : " "), + "]\"", NULL); + if (d->icon_width) { + ap_rprintf(r, " width=\"%d\"", d->icon_width); + } + if (d->icon_height) { + ap_rprintf(r, " height=\"%d\"", d->icon_height); + } + + if (autoindex_opts & EMIT_XHTML) { + ap_rputs(" /", r); + } + ap_rputs(">", r); + } + else { + ap_rputs(" ", r); + } + if (autoindex_opts & ICONS_ARE_LINKS) { + ap_rputs("</a></td>", r); + } + else { + ap_rputs("</td>", r); + } + } + if (d->name_adjust == K_ADJUST) { + ap_rvputs(r, "<td><a href=\"", anchor, "\">", + ap_escape_html(scratch, t2), "</a>", NULL); + } + else { + nwidth = strlen(t2); + if (nwidth > name_width) { + memcpy(name_scratch, t2, name_width - 3); + name_scratch[name_width - 3] = '.'; + name_scratch[name_width - 2] = '.'; + name_scratch[name_width - 1] = '>'; + name_scratch[name_width] = 0; + t2 = name_scratch; + nwidth = name_width; + } + ap_rvputs(r, "<td><a href=\"", anchor, "\">", + ap_escape_html(scratch, t2), + "</a>", pad_scratch + nwidth, NULL); + } + if (!(autoindex_opts & SUPPRESS_LAST_MOD)) { + if (ar[x]->lm != -1) { + char time_str[MAX_STRING_LEN]; + apr_time_exp_t ts; + apr_time_exp_lt(&ts, ar[x]->lm); + apr_strftime(time_str, &rv, MAX_STRING_LEN, + "</td><td align=\"right\">%d-%b-%Y %H:%M ", + &ts); + ap_rputs(time_str, r); + } + else { + ap_rputs("</td><td> ", r); + } + } + if (!(autoindex_opts & SUPPRESS_SIZE)) { + char buf[5]; + ap_rvputs(r, "</td><td align=\"right\">", + apr_strfsize(ar[x]->size, buf), NULL); + } + if (!(autoindex_opts & SUPPRESS_DESC)) { + if (ar[x]->desc) { + if (d->desc_adjust == K_ADJUST) { + ap_rvputs(r, "</td><td>", ar[x]->desc, NULL); + } + else { + ap_rvputs(r, "</td><td>", + terminate_description(d, ar[x]->desc, + autoindex_opts, + desc_width), NULL); + } + } + } + else { + ap_rputs("</td><td> ", r); + } + ap_rputs("</td></tr>\n", r); + } + else if (autoindex_opts & FANCY_INDEXING) { + if (!(autoindex_opts & SUPPRESS_ICON)) { + if (autoindex_opts & ICONS_ARE_LINKS) { + ap_rvputs(r, "<a href=\"", anchor, "\">", NULL); + } + if ((ar[x]->icon) || d->default_icon) { + ap_rvputs(r, "<img src=\"", + ap_escape_html(scratch, + ar[x]->icon ? ar[x]->icon + : d->default_icon), + "\" alt=\"[", (ar[x]->alt ? ar[x]->alt : " "), + "]\"", NULL); + if (d->icon_width) { + ap_rprintf(r, " width=\"%d\"", d->icon_width); + } + if (d->icon_height) { + ap_rprintf(r, " height=\"%d\"", d->icon_height); + } + + if (autoindex_opts & EMIT_XHTML) { + ap_rputs(" /", r); + } + ap_rputs(">", r); + } + else { + ap_rputs(" ", r); + } + if (autoindex_opts & ICONS_ARE_LINKS) { + ap_rputs("</a> ", r); + } + else { + ap_rputc(' ', r); + } + } + nwidth = strlen(t2); + if (nwidth > name_width) { + memcpy(name_scratch, t2, name_width - 3); + name_scratch[name_width - 3] = '.'; + name_scratch[name_width - 2] = '.'; + name_scratch[name_width - 1] = '>'; + name_scratch[name_width] = 0; + t2 = name_scratch; + nwidth = name_width; + } + ap_rvputs(r, "<a href=\"", anchor, "\">", + ap_escape_html(scratch, t2), + "</a>", pad_scratch + nwidth, NULL); + /* + * The blank before the storm.. er, before the next field. + */ + ap_rputs(" ", r); + if (!(autoindex_opts & SUPPRESS_LAST_MOD)) { + if (ar[x]->lm != -1) { + char time_str[MAX_STRING_LEN]; + apr_time_exp_t ts; + apr_time_exp_lt(&ts, ar[x]->lm); + apr_strftime(time_str, &rv, MAX_STRING_LEN, + "%d-%b-%Y %H:%M ", &ts); + ap_rputs(time_str, r); + } + else { + /*Length="22-Feb-1998 23:42 " (see 4 lines above) */ + ap_rputs(" ", r); + } + } + if (!(autoindex_opts & SUPPRESS_SIZE)) { + char buf[5]; + ap_rputs(apr_strfsize(ar[x]->size, buf), r); + ap_rputs(" ", r); + } + if (!(autoindex_opts & SUPPRESS_DESC)) { + if (ar[x]->desc) { + ap_rputs(terminate_description(d, ar[x]->desc, + autoindex_opts, + desc_width), r); + } + } + ap_rputc('\n', r); + } + else { + ap_rvputs(r, "<li><a href=\"", anchor, "\"> ", + ap_escape_html(scratch, t2), + "</a></li>\n", NULL); + } + } + if (autoindex_opts & TABLE_INDEXING) { + ap_rvputs(r, breakrow, "</table>\n", NULL); + } + else if (autoindex_opts & FANCY_INDEXING) { + if (!(autoindex_opts & SUPPRESS_RULES)) { + ap_rputs("<hr", r); + if (autoindex_opts & EMIT_XHTML) { + ap_rputs(" /", r); + } + ap_rputs("></pre>\n", r); + } + else { + ap_rputs("</pre>\n", r); + } + } + else { + ap_rputs("</ul>\n", r); + } +} + +/* + * Compare two file entries according to the sort criteria. The return + * is essentially a signum function value. + */ + +static int dsortf(struct ent **e1, struct ent **e2) +{ + struct ent *c1; + struct ent *c2; + int result = 0; + + /* + * First, see if either of the entries is for the parent directory. + * If so, that *always* sorts lower than anything else. + */ + if ((*e1)->name[0] == '/') { + return -1; + } + if ((*e2)->name[0] == '/') { + return 1; + } + /* + * Now see if one's a directory and one isn't, if we're set + * isdir for FOLDERS_FIRST. + */ + if ((*e1)->isdir != (*e2)->isdir) { + return (*e1)->isdir ? -1 : 1; + } + /* + * All of our comparisons will be of the c1 entry against the c2 one, + * so assign them appropriately to take care of the ordering. + */ + if ((*e1)->ascending) { + c1 = *e1; + c2 = *e2; + } + else { + c1 = *e2; + c2 = *e1; + } + + switch (c1->key) { + case K_LAST_MOD: + if (c1->lm > c2->lm) { + return 1; + } + else if (c1->lm < c2->lm) { + return -1; + } + break; + case K_SIZE: + if (c1->size > c2->size) { + return 1; + } + else if (c1->size < c2->size) { + return -1; + } + break; + case K_DESC: + if (c1->version_sort) { + result = apr_strnatcmp(c1->desc ? c1->desc : "", + c2->desc ? c2->desc : ""); + } + else { + result = strcmp(c1->desc ? c1->desc : "", + c2->desc ? c2->desc : ""); + } + if (result) { + return result; + } + break; + } + + /* names may identical when treated case-insensitively, + * so always fall back on strcmp() flavors to put entries + * in deterministic order. This means that 'ABC' and 'abc' + * will always appear in the same order, rather than + * variably between 'ABC abc' and 'abc ABC' order. + */ + + if (c1->version_sort) { + if (c1->ignore_case) { + result = apr_strnatcasecmp (c1->name, c2->name); + } + if (!result) { + result = apr_strnatcmp(c1->name, c2->name); + } + } + + /* The names may be identical in respects other other than + * filename case when strnatcmp is used above, so fall back + * to strcmp on conflicts so that fn1.01.zzz and fn1.1.zzz + * are also sorted in a deterministic order. + */ + + if (!result && c1->ignore_case) { + result = strcasecmp (c1->name, c2->name); + } + + if (!result) { + result = strcmp (c1->name, c2->name); + } + + return result; +} + + +static int +mod_glfs_index_directory (request_rec *r, + glusterfs_dir_config_t *autoindex_conf) +{ + char *title_name = ap_escape_html(r->pool, r->uri); + char *title_endp; + char *name = r->filename; + char *pstring = NULL; + apr_finfo_t dirent; + long fd = -1; + apr_status_t status; + int num_ent = 0, x; + struct ent *head, *p; + struct ent **ar = NULL; + const char *qstring; + apr_int32_t autoindex_opts = autoindex_conf->opts; + char keyid; + char direction; + char *colargs; + char *fullpath; + apr_size_t dirpathlen; + char *ctype = "text/html"; + char *charset; + glusterfs_dir_config_t *dir_config = NULL; + int ret = -1; + struct dirent entry = {0, }; + struct stat st = {0, }; + char *path = NULL; + char *fname = NULL; + + dir_config = mod_glfs_dconfig (r); + if (!dir_config || !dir_config->handle) { + return HTTP_INTERNAL_SERVER_ERROR; + } + + path = r->uri + strlen (dir_config->mount_dir); + if (!dir_config->handle) { + ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, + "mod_glfs_index_directory: glusterfs handler is NULL, check glusterfs logfile %s for more details", + dir_config->logfile); + return HTTP_INTERNAL_SERVER_ERROR; + } + + fd = glusterfs_open (dir_config->handle, path, O_RDONLY, 0); + if (fd == 0) { + ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, + "file permissions deny server access: %s", r->filename); + return HTTP_FORBIDDEN; + } + + if (autoindex_conf->ctype) { + ctype = autoindex_conf->ctype; + } + if (autoindex_conf->charset) { + charset = autoindex_conf->charset; + } + else { +#if APR_HAS_UNICODE_FS + charset = "UTF-8"; +#else + charset = "ISO-8859-1"; +#endif + } + if (*charset) { + ap_set_content_type(r, apr_pstrcat(r->pool, ctype, ";charset=", + charset, NULL)); + } + else { + ap_set_content_type(r, ctype); + } + + if (autoindex_opts & TRACK_MODIFIED) { + ap_update_mtime(r, r->finfo.mtime); + ap_set_last_modified(r); + ap_set_etag(r); + } + if (r->header_only) { + glusterfs_close (fd); + return 0; + } + + /* + * If there is no specific ordering defined for this directory, + * default to ascending by filename. + */ + keyid = autoindex_conf->default_keyid + ? autoindex_conf->default_keyid : K_NAME; + direction = autoindex_conf->default_direction + ? autoindex_conf->default_direction : D_ASCENDING; + + /* + * Figure out what sort of indexing (if any) we're supposed to use. + * + * If no QUERY_STRING was specified or client query strings have been + * explicitly disabled. + * If we are ignoring the client, suppress column sorting as well. + */ + if (autoindex_opts & IGNORE_CLIENT) { + qstring = NULL; + autoindex_opts |= SUPPRESS_COLSORT; + colargs = ""; + } + else { + char fval[5], vval[5], *ppre = "", *epattern = ""; + fval[0] = '\0'; vval[0] = '\0'; + qstring = r->args; + + while (qstring && *qstring) { + + /* C= First Sort key Column (N, M, S, D) */ + if ( qstring[0] == 'C' && qstring[1] == '=' + && qstring[2] && strchr(K_VALID, qstring[2]) + && ( qstring[3] == '&' || qstring[3] == ';' + || !qstring[3])) { + keyid = qstring[2]; + qstring += qstring[3] ? 4 : 3; + } + + /* O= Sort order (A, D) */ + else if ( qstring[0] == 'O' && qstring[1] == '=' + && ( (qstring[2] == D_ASCENDING) + || (qstring[2] == D_DESCENDING)) + && ( qstring[3] == '&' || qstring[3] == ';' + || !qstring[3])) { + direction = qstring[2]; + qstring += qstring[3] ? 4 : 3; + } + + /* F= Output Format (0 plain, 1 fancy (pre), 2 table) */ + else if ( qstring[0] == 'F' && qstring[1] == '=' + && qstring[2] && strchr("012", qstring[2]) + && ( qstring[3] == '&' || qstring[3] == ';' + || !qstring[3])) { + if (qstring[2] == '0') { + autoindex_opts &= ~(FANCY_INDEXING | TABLE_INDEXING); + } + else if (qstring[2] == '1') { + autoindex_opts = (autoindex_opts | FANCY_INDEXING) + & ~TABLE_INDEXING; + } + else if (qstring[2] == '2') { + autoindex_opts |= FANCY_INDEXING | TABLE_INDEXING; + } + strcpy(fval, ";F= "); + fval[3] = qstring[2]; + qstring += qstring[3] ? 4 : 3; + } + + /* V= Version sort (0, 1) */ + else if ( qstring[0] == 'V' && qstring[1] == '=' + && (qstring[2] == '0' || qstring[2] == '1') + && ( qstring[3] == '&' || qstring[3] == ';' + || !qstring[3])) { + if (qstring[2] == '0') { + autoindex_opts &= ~VERSION_SORT; + } + else if (qstring[2] == '1') { + autoindex_opts |= VERSION_SORT; + } + strcpy(vval, ";V= "); + vval[3] = qstring[2]; + qstring += qstring[3] ? 4 : 3; + } + + /* P= wildcard pattern (*.foo) */ + else if (qstring[0] == 'P' && qstring[1] == '=') { + const char *eos = qstring += 2; /* for efficiency */ + + while (*eos && *eos != '&' && *eos != ';') { + ++eos; + } + + if (eos == qstring) { + pstring = NULL; + } + else { + pstring = apr_pstrndup(r->pool, qstring, eos - qstring); + if (ap_unescape_url(pstring) != OK) { + /* ignore the pattern, if it's bad. */ + pstring = NULL; + } + else { + ppre = ";P="; + /* be correct */ + epattern = ap_escape_uri(r->pool, pstring); + } + } + + if (*eos && *++eos) { + qstring = eos; + } + else { + qstring = NULL; + } + } + + /* Syntax error? Ignore the remainder! */ + else { + qstring = NULL; + } + } + colargs = apr_pstrcat(r->pool, fval, vval, ppre, epattern, NULL); + } + + /* Spew HTML preamble */ + title_endp = title_name + strlen(title_name) - 1; + + while (title_endp > title_name && *title_endp == '/') { + *title_endp-- = '\0'; + } + + emit_head(r, find_header(autoindex_conf, r), + autoindex_opts & SUPPRESS_PREAMBLE, + autoindex_opts & EMIT_XHTML, title_name); + + /* + * Since we don't know how many dir. entries there are, put them into a + * linked list and then arrayificate them so qsort can use them. + */ + head = NULL; + p = make_parent_entry(autoindex_opts, autoindex_conf, r, keyid, direction); + if (p != NULL) { + p->next = head; + head = p; + num_ent++; + } + fullpath = apr_palloc(r->pool, APR_PATH_MAX); + dirpathlen = strlen(name); + memcpy(fullpath, name, dirpathlen); + + do { + ret = glusterfs_readdir (fd, &entry, sizeof (entry)); + if (ret <= 0) { + break; + } + + fname = apr_pstrcat (r->pool, path, entry.d_name); + + ret = glusterfs_stat (dir_config->handle, fname, &st); + if (ret != 0) { + break; + } + + dirent.fname = fname; + dirent.name = apr_pstrdup (r->pool, entry.d_name); + fill_out_finfo (&dirent, &st, + APR_FINFO_MIN | APR_FINFO_IDENT | APR_FINFO_NLINK | APR_FINFO_OWNER | + APR_FINFO_PROT); + + p = make_autoindex_entry(&dirent, autoindex_opts, autoindex_conf, r, + keyid, direction, pstring); + if (p != NULL) { + p->next = head; + head = p; + num_ent++; + } + } while (1); + + if (num_ent > 0) { + ar = (struct ent **) apr_palloc(r->pool, + num_ent * sizeof(struct ent *)); + p = head; + x = 0; + while (p) { + ar[x++] = p; + p = p->next; + } + + qsort((void *) ar, num_ent, sizeof(struct ent *), + (int (*)(const void *, const void *)) dsortf); + } + output_directories(ar, num_ent, autoindex_conf, r, autoindex_opts, + keyid, direction, colargs); + glusterfs_close (fd); + + emit_tail(r, find_readme(autoindex_conf, r), + autoindex_opts & SUPPRESS_PREAMBLE); + + return 0; +} + + +static int +handle_autoindex(request_rec *r) +{ + glusterfs_dir_config_t *dir_config = NULL; + int allow_opts; + + allow_opts = ap_allow_options(r); + + r->allowed |= (AP_METHOD_BIT << M_GET); + if (r->method_number != M_GET) { + return DECLINED; + } + + dir_config = mod_glfs_dconfig (r); + + /* OK, nothing easy. Trot out the heavy artillery... */ + + if (allow_opts & OPT_INDEXES) { + int errstatus; + + if ((errstatus = ap_discard_request_body(r)) != OK) { + return errstatus; + } + + /* KLUDGE --- make the sub_req lookups happen in the right directory. + * Fixing this in the sub_req_lookup functions themselves is difficult, + * and would probably break virtual includes... + */ + + if (r->filename[strlen(r->filename) - 1] != '/') { + r->filename = apr_pstrcat(r->pool, r->filename, "/", NULL); + } + return mod_glfs_index_directory(r, dir_config); + } else { + ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, + "Directory index forbidden by " + "Options directive: %s", r->filename); + return HTTP_FORBIDDEN; + } +} + + +static int +mod_glfs_handler (request_rec *r) +{ + conn_rec *c = r->connection; + apr_bucket_brigade *bb; + apr_bucket *e; + core_dir_config *d; + int errstatus; + long fd = -1; + apr_status_t status; + glusterfs_dir_config_t *dir_config = NULL; + char *path = NULL; + int num_ranges = 0; + apr_size_t size = 0; + apr_off_t range_start = 0, range_end = 0; + char *current = NULL; + apr_status_t rv = 0; + + /* XXX if/when somebody writes a content-md5 filter we either need to + * remove this support or coordinate when to use the filter vs. + * when to use this code + * The current choice of when to compute the md5 here matches the 1.3 + * support fairly closely (unlike 1.3, we don't handle computing md5 + * when the charset is translated). + */ + + int bld_content_md5; + if (!r->handler || (r->handler && strcmp (r->handler, GLUSTERFS_HANDLER))) + return DECLINED; + + if (r->uri[0] == '\0') { + return DECLINED; + } + + if (r->finfo.filetype == APR_DIR) { + return handle_autoindex (r); + } + + dir_config = mod_glfs_dconfig (r); + + ap_allow_standard_methods(r, MERGE_ALLOW, M_GET, -1); + + /* We understood the (non-GET) method, but it might not be legal for + this particular resource. Check to see if the 'deliver_script' + flag is set. If so, then we go ahead and deliver the file since + it isn't really content (only GET normally returns content). + + Note: based on logic further above, the only possible non-GET + method at this point is POST. In the future, we should enable + script delivery for all methods. */ + if (r->method_number != M_GET) { + core_request_config *req_cfg; + + req_cfg = ap_get_module_config(r->request_config, &core_module); + if (!req_cfg->deliver_script) { + /* The flag hasn't been set for this request. Punt. */ + ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, + "This resource does not accept the %s method.", + r->method); + return HTTP_METHOD_NOT_ALLOWED; + } + } + + if (!dir_config->handle) { + ap_log_rerror (APLOG_MARK, APLOG_ERR, 0, r, + "glusterfs initialization failed\n"); + return HTTP_FORBIDDEN; + } + + d = (core_dir_config *)ap_get_module_config(r->per_dir_config, + &core_module); + bld_content_md5 = (d->content_md5 & 1) + && r->output_filters->frec->ftype != AP_FTYPE_RESOURCE; + + if ((errstatus = ap_discard_request_body(r)) != OK) { + return errstatus; + } + + if (r->finfo.filetype == 0) { + ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, + "File does not exist: %s", r->filename); + return HTTP_NOT_FOUND; + } + + if ((r->used_path_info != AP_REQ_ACCEPT_PATH_INFO) && + r->path_info && *r->path_info) + { + /* default to reject */ + ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, + "File does not exist: %s", + apr_pstrcat(r->pool, r->filename, r->path_info, NULL)); + return HTTP_NOT_FOUND; + } + + ap_update_mtime (r, r->finfo.mtime); + ap_set_last_modified (r); + ap_set_etag (r); + apr_table_setn (r->headers_out, "Accept-Ranges", "bytes"); + + num_ranges = ap_set_byterange(r); + if (num_ranges == 0) { + size = r->finfo.size; + } else { + char *tmp = apr_pstrdup (r->pool, r->range); + while ((current = ap_getword(r->pool, (const char **)&tmp, ',')) + && (rv = parse_byterange(current, r->finfo.size, &range_start, + &range_end))) { + size += (range_end - range_start); + } + } + + ap_set_content_length (r, size); + + if ((errstatus = ap_meets_conditions(r)) != OK) { + r->status = errstatus; + } + + /* file is small enough to have already got the content in glusterfs_lookup */ + if (r->finfo.size <= dir_config->xattr_file_size && dir_config->buf) { + if (bld_content_md5) { + apr_table_setn (r->headers_out, "Content-MD5", + (const char *)ap_md5_binary(r->pool, dir_config->buf, r->finfo.size)); + } + + ap_log_rerror (APLOG_MARK, APLOG_NOTICE, 0, r, + "fetching data from glusterfs through xattr interface\n"); + + bb = apr_brigade_create(r->pool, c->bucket_alloc); + + e = apr_bucket_heap_create (dir_config->buf, r->finfo.size, free, c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL (bb, e); + + e = apr_bucket_eos_create(c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(bb, e); + + dir_config->buf = NULL; + + /* let the byterange_filter handle multipart requests */ + status = ap_pass_brigade(r->output_filters, bb); + if (status == APR_SUCCESS + || r->status != HTTP_OK + || c->aborted) { + return OK; + } + else { + /* no way to know what type of error occurred */ + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, + "mod_glfs_handler: ap_pass_brigade returned %i", + status); + return HTTP_INTERNAL_SERVER_ERROR; + } + } + + if (!dir_config->handle) { + ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, + "mod_glfs_handler: glusterfs handler is NULL, check glusterfs logfile %s for more details", + dir_config->logfile); + return HTTP_INTERNAL_SERVER_ERROR; + } + + /* do standard open/read/close to fetch content */ + path = r->uri + strlen (dir_config->mount_dir); + + fd = glusterfs_open (dir_config->handle, path , O_RDONLY, 0); + if (fd == 0) { + ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, + "file permissions deny server access: %s", r->filename); + return HTTP_FORBIDDEN; + } + + /* byterange_filter cannot handle range requests, since we are not sending the + whole data in a single brigade */ + + + if (num_ranges == 0) { + mod_glfs_read_async (r, NULL, fd, 0, -1); + } else { + mod_glfs_handle_byte_ranges (r, fd, num_ranges); + } + + glusterfs_close (fd); +} + + +#if 0 +static apr_status_t +mod_glfs_output_filter (ap_filter_t *f, + apr_bucket_brigade *b) +{ + size_t size = 0; + apr_bucket_t *e = NULL; + size = atol (apr_table_get (r->notes, MOD_GLFS_SIZE)); + + for (e = APR_BRIGADE_FIRST(b); + e != APR_BRIGADE_SENTINEL(b); + e = APR_BUCKET_NEXT(e)) + { + /* FIXME: can there be more than one heap buckets? */ + if (e->type == &apr_bucket_type_heap) { + break; + } + } + + if (e != APR_BRIGADE_SENTINEL(b)) { + e->length = size; + } + + return ap_pass_brigade (f->next, b); +} +#endif + +static int +mod_glfs_fixup_dir(request_rec *r) +{ + glusterfs_dir_config_t *d; + char *dummy_ptr[1]; + char **names_ptr; + int num_names; + int error_notfound = 0; + + /* only handle requests against directories */ + if (r->finfo.filetype != APR_DIR) { + return DECLINED; + } + + if (!r->handler || strcmp (r->handler, GLUSTERFS_HANDLER)) { + return DECLINED; + } + + /* Never tolerate path_info on dir requests */ + if (r->path_info && *r->path_info) { + return DECLINED; + } + + d = (glusterfs_dir_config_t *)ap_get_module_config(r->per_dir_config, + &glusterfs_module); + + /* Redirect requests that are not '/' terminated */ + if (r->uri[0] == '\0' || r->uri[strlen(r->uri) - 1] != '/') + { + char *ifile; + + if (!d->do_slash) { + return DECLINED; + } + + /* Only redirect non-get requests if we have no note to warn + * that this browser cannot handle redirs on non-GET requests + * (such as Microsoft's WebFolders). + */ + if ((r->method_number != M_GET) + && apr_table_get(r->subprocess_env, "redirect-carefully")) { + return DECLINED; + } + + if (r->args != NULL) { + ifile = apr_pstrcat(r->pool, ap_escape_uri(r->pool, r->uri), + "/", "?", r->args, NULL); + } + else { + ifile = apr_pstrcat(r->pool, ap_escape_uri(r->pool, r->uri), + "/", NULL); + } + + apr_table_setn(r->headers_out, "Location", + ap_construct_url(r->pool, ifile, r)); + return HTTP_MOVED_PERMANENTLY; + } + + if (d->index_names) { + names_ptr = (char **)d->index_names->elts; + num_names = d->index_names->nelts; + } + else { + dummy_ptr[0] = AP_DEFAULT_INDEX; + names_ptr = dummy_ptr; + num_names = 1; + } + + for (; num_names; ++names_ptr, --num_names) { + /* XXX: Is this name_ptr considered escaped yet, or not??? */ + char *name_ptr = *names_ptr; + request_rec *rr; + + /* Once upon a time args were handled _after_ the successful redirect. + * But that redirect might then _refuse_ the given r->args, creating + * a nasty tangle. It seems safer to consider the r->args while we + * determine if name_ptr is our viable index, and therefore set them + * up correctly on redirect. + */ + if (r->args != NULL) { + name_ptr = apr_pstrcat(r->pool, name_ptr, "?", r->args, NULL); + } + + rr = ap_sub_req_lookup_uri(name_ptr, r, NULL); + + /* The sub request lookup is very liberal, and the core map_to_storage + * handler will almost always result in HTTP_OK as /foo/index.html + * may be /foo with PATH_INFO="/index.html", or even / with + * PATH_INFO="/foo/index.html". To get around this we insist that the + * the index be a regular filetype. + * + * Another reason is that the core handler also makes the assumption + * that if r->finfo is still NULL by the time it gets called, the + * file does not exist. + */ + if (rr->status == HTTP_OK + && ( (rr->handler && !strcmp(rr->handler, "proxy-server")) + || rr->finfo.filetype == APR_REG)) { + ap_internal_fast_redirect(rr, r); + return OK; + } + + /* If the request returned a redirect, propagate it to the client */ + + if (ap_is_HTTP_REDIRECT(rr->status) + || (rr->status == HTTP_NOT_ACCEPTABLE && num_names == 1) + || (rr->status == HTTP_UNAUTHORIZED && num_names == 1)) { + + apr_pool_join(r->pool, rr->pool); + error_notfound = rr->status; + r->notes = apr_table_overlay(r->pool, r->notes, rr->notes); + r->headers_out = apr_table_overlay(r->pool, r->headers_out, + rr->headers_out); + r->err_headers_out = apr_table_overlay(r->pool, r->err_headers_out, + rr->err_headers_out); + return error_notfound; + } + + /* If the request returned something other than 404 (or 200), + * it means the module encountered some sort of problem. To be + * secure, we should return the error, rather than allow autoindex + * to create a (possibly unsafe) directory index. + * + * So we store the error, and if none of the listed files + * exist, we return the last error response we got, instead + * of a directory listing. + */ + if (rr->status && rr->status != HTTP_NOT_FOUND + && rr->status != HTTP_OK) { + error_notfound = rr->status; + } + + ap_destroy_sub_req(rr); + } + + if (error_notfound) { + return error_notfound; + } + + /* nothing for us to do, pass on through */ + return DECLINED; +} + + +static void +mod_glfs_register_hooks(apr_pool_t *p) +{ + ap_hook_child_init (mod_glfs_child_init, NULL, NULL, APR_HOOK_MIDDLE); + ap_hook_handler (mod_glfs_handler, NULL, NULL, APR_HOOK_REALLY_FIRST); + ap_hook_map_to_storage (mod_glfs_map_to_storage, NULL, NULL, APR_HOOK_REALLY_FIRST); + ap_hook_fixups(mod_glfs_fixup_dir,NULL,NULL,APR_HOOK_LAST); + +/* mod_glfs_output_filter_handle = + ap_register_output_filter ("MODGLFS", mod_glfs_output_filter, + NULL, AP_FTYPE_PROTOCOL); */ +} + +static const char * +cmd_add_index (cmd_parms *cmd, void *dummy, const char *arg) +{ + glusterfs_dir_config_t *d = dummy; + + if (!d->index_names) { + d->index_names = apr_array_make(cmd->pool, 2, sizeof(char *)); + } + *(const char **)apr_array_push(d->index_names) = arg; + return NULL; +} + +static const char * +cmd_configure_slash (cmd_parms *cmd, void *d_, int arg) +{ + glusterfs_dir_config_t *d = d_; + + d->do_slash = arg ? SLASH_ON : SLASH_OFF; + return NULL; +} + +#define DIR_CMD_PERMS OR_INDEXES + +static const +command_rec mod_glfs_cmds[] = +{ + AP_INIT_TAKE1( + "GlusterfsLogfile", + cmd_add_logfile, + NULL, + ACCESS_CONF, /*FIXME: allow overriding in .htaccess files */ + "Glusterfs logfile" + ), + + AP_INIT_TAKE1( + "GlusterfsLoglevel", + cmd_set_loglevel, + NULL, + ACCESS_CONF, + "Glusterfs loglevel:anyone of none, critical, error, warning, debug" + ), + + AP_INIT_TAKE1( + "GlusterfsCacheTimeout", + cmd_set_cache_timeout, + NULL, + ACCESS_CONF, + "Timeout value in seconds for lookup and stat cache of libglusterfsclient" + ), + + AP_INIT_TAKE1( + "GlusterfsVolumeSpecfile", + cmd_add_volume_specfile, + NULL, + ACCESS_CONF, + "Glusterfs Volume specfication file specifying filesystem under this directory" + ), + + AP_INIT_TAKE1( + "GlusterfsXattrFileSize", + cmd_add_xattr_file_size, + NULL, + ACCESS_CONF, + "Maximum size of the file that can be fetched through extended attribute interface of libglusterfsclient" + ), + + /* mod_dir cmds */ + AP_INIT_ITERATE("DirectoryIndex", cmd_add_index, + NULL, DIR_CMD_PERMS, + "a list of file names"), + + AP_INIT_FLAG("DirectorySlash", cmd_configure_slash, + NULL, DIR_CMD_PERMS, + "On or Off"), + + /* autoindex cmds */ + AP_INIT_ITERATE2("AddIcon", cmd_add_icon, + BY_PATH, DIR_CMD_PERMS, + "an icon URL followed by one or more filenames"), + + AP_INIT_ITERATE2("AddIconByType", cmd_add_icon, + BY_TYPE, DIR_CMD_PERMS, + "an icon URL followed by one or more MIME types"), + + AP_INIT_ITERATE2("AddIconByEncoding", cmd_add_icon, + BY_ENCODING, DIR_CMD_PERMS, + "an icon URL followed by one or more content encodings"), + + AP_INIT_ITERATE2("AddAlt", cmd_add_alt, BY_PATH, + DIR_CMD_PERMS, + "alternate descriptive text followed by one or more " + "filenames"), + + AP_INIT_ITERATE2("AddAltByType", cmd_add_alt, + BY_TYPE, DIR_CMD_PERMS, + "alternate descriptive text followed by one or more MIME " + "types"), + + AP_INIT_ITERATE2("AddAltByEncoding", cmd_add_alt, + BY_ENCODING, DIR_CMD_PERMS, + "alternate descriptive text followed by one or more " + "content encodings"), + + AP_INIT_TAKE_ARGV("IndexOptions", cmd_add_opts, + NULL, DIR_CMD_PERMS, + "one or more index options [+|-][]"), + + AP_INIT_TAKE2("IndexOrderDefault", cmd_set_default_order, + NULL, DIR_CMD_PERMS, + "{Ascending,Descending} {Name,Size,Description,Date}"), + + AP_INIT_ITERATE("IndexIgnore", cmd_add_ignore, + NULL, DIR_CMD_PERMS, + "one or more file extensions"), + + AP_INIT_ITERATE2("AddDescription", cmd_add_desc, + BY_PATH, DIR_CMD_PERMS, + "Descriptive text followed by one or more filenames"), + + AP_INIT_TAKE1("HeaderName", cmd_add_header, + NULL, DIR_CMD_PERMS, + "a filename"), + + AP_INIT_TAKE1("ReadmeName", cmd_add_readme, + NULL, DIR_CMD_PERMS, + "a filename"), + + AP_INIT_RAW_ARGS("FancyIndexing", ap_set_deprecated, + NULL, OR_ALL, + "The FancyIndexing directive is no longer supported. " + "Use IndexOptions FancyIndexing."), + + AP_INIT_TAKE1("DefaultIcon", ap_set_string_slot, + (void *)APR_OFFSETOF(glusterfs_dir_config_t, default_icon), + DIR_CMD_PERMS, "an icon URL"), + + AP_INIT_TAKE1("IndexStyleSheet", ap_set_string_slot, + (void *)APR_OFFSETOF(glusterfs_dir_config_t, style_sheet), + DIR_CMD_PERMS, "URL to style sheet"), + + {NULL} +}; + +module AP_MODULE_DECLARE_DATA glusterfs_module = +{ + STANDARD20_MODULE_STUFF, + mod_glfs_create_dir_config, + mod_glfs_merge_dir_config, + NULL, //mod_glfs_create_server_config, + NULL, //mod_glfs_merge_server_config, + mod_glfs_cmds, + mod_glfs_register_hooks, +}; diff --git a/mod_glusterfs/apache/Makefile.am b/mod_glusterfs/apache/Makefile.am new file mode 100644 index 00000000000..bda03931052 --- /dev/null +++ b/mod_glusterfs/apache/Makefile.am @@ -0,0 +1,10 @@ +SUBDIRS = $(MOD_GLUSTERFS_HTTPD_VERSION) + +EXTRA_DIST = 1.3/Makefile.am 1.3/Makefile.in \ + 1.3/src/Makefile.am 1.3/src/Makefile.in \ + 1.3/src/mod_glusterfs.c \ + 1.3/src/README.txt \ + 2.2/Makefile.am 2.2/Makefile.in \ + 2.2/src/Makefile.am 2.2/src/Makefile.in \ + 2.2/src/mod_glusterfs.c +CLEANFILES = |