root/sapi/apache2filter/sapi_apache2.c

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DEFINITIONS

This source file includes following definitions.
  1. php_apache_sapi_ub_write
  2. php_apache_sapi_header_handler
  3. php_apache_sapi_send_headers
  4. php_apache_sapi_read_post
  5. php_apache_sapi_get_stat
  6. php_apache_sapi_read_cookies
  7. php_apache_sapi_getenv
  8. php_apache_sapi_register_variables
  9. php_apache_sapi_flush
  10. php_apache_sapi_log_message
  11. php_apache_disable_caching
  12. php_apache_sapi_get_request_time
  13. php_apache2_startup
  14. php_input_filter
  15. php_apache_request_ctor
  16. php_apache_request_dtor
  17. php_output_filter
  18. php_apache_server_shutdown
  19. php_apache_add_version
  20. php_pre_config
  21. php_apache_server_startup
  22. php_add_filter
  23. php_insert_filter
  24. php_server_context_cleanup
  25. php_post_read_request
  26. php_register_hook
  27. php_apache_read_stream
  28. php_apache_fsizer_stream

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Sascha Schumann <sascha@schumann.cx>                        |
   |          Parts based on Apache 1.3 SAPI module by                    |
   |          Rasmus Lerdorf and Zeev Suraski                             |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

#include <fcntl.h>

#define ZEND_INCLUDE_FULL_WINDOWS_HEADERS

#include "php.h"
#include "php_main.h"
#include "php_ini.h"
#include "php_variables.h"
#include "SAPI.h"

#include "ext/standard/php_smart_str.h"
#ifndef NETWARE
#include "ext/standard/php_standard.h"
#else
#include "ext/standard/basic_functions.h"
#endif

#include "apr_strings.h"
#include "ap_config.h"
#include "apr_buckets.h"
#include "util_filter.h"
#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_log.h"
#include "http_main.h"
#include "util_script.h"
#include "http_core.h"                         
#include "ap_mpm.h"

#include "php_apache.h"

/* UnixWare and Netware define shutdown to _shutdown, which causes problems later
 * on when using a structure member named shutdown. Since this source
 * file does not use the system call shutdown, it is safe to #undef it.
 */
#undef shutdown

/* A way to specify the location of the php.ini dir in an apache directive */
char *apache2_php_ini_path_override = NULL;

static int
php_apache_sapi_ub_write(const char *str, uint str_length TSRMLS_DC)
{
        apr_bucket *b;
        apr_bucket_brigade *bb;
        apr_bucket_alloc_t *ba;
        ap_filter_t *f; /* remaining output filters */
        php_struct *ctx;

        ctx = SG(server_context);
        f = ctx->f;
        
        if (str_length == 0) return 0;
        
        ba = f->c->bucket_alloc;
        bb = apr_brigade_create(ctx->r->pool, ba);

        b = apr_bucket_transient_create(str, str_length, ba);
        APR_BRIGADE_INSERT_TAIL(bb, b);

        if (ap_pass_brigade(f->next, bb) != APR_SUCCESS || ctx->r->connection->aborted) {
                php_handle_aborted_connection();
        }
        
        return str_length; /* we always consume all the data passed to us. */
}

static int
php_apache_sapi_header_handler(sapi_header_struct *sapi_header, sapi_header_op_enum op, sapi_headers_struct *sapi_headers TSRMLS_DC)
{
        php_struct *ctx;
        char *val, *ptr;

        ctx = SG(server_context);

        switch(op) {
                case SAPI_HEADER_DELETE:
                        apr_table_unset(ctx->r->headers_out, sapi_header->header);
                        return 0;

                case SAPI_HEADER_DELETE_ALL:
                        apr_table_clear(ctx->r->headers_out);
                        return 0;

                case SAPI_HEADER_ADD:
                case SAPI_HEADER_REPLACE:
                        val = strchr(sapi_header->header, ':');

                        if (!val) {
                                sapi_free_header(sapi_header);
                                return 0;
                        }
                        ptr = val;

                        *val = '\0';
                        
                        do {
                                val++;
                        } while (*val == ' ');

                        if (!strcasecmp(sapi_header->header, "content-type"))
                                ctx->r->content_type = apr_pstrdup(ctx->r->pool, val);
                       else if (!strcasecmp(sapi_header->header, "content-length"))
                               ap_set_content_length(ctx->r, strtol(val, (char **)NULL, 10));
                        else if (op == SAPI_HEADER_REPLACE)
                                apr_table_set(ctx->r->headers_out, sapi_header->header, val);
                        else
                                apr_table_add(ctx->r->headers_out, sapi_header->header, val);
                        
                        *ptr = ':';
                        return SAPI_HEADER_ADD;

                default:
                        return 0;
        }
}

static int
php_apache_sapi_send_headers(sapi_headers_struct *sapi_headers TSRMLS_DC)
{
        php_struct *ctx = SG(server_context);

        ctx->r->status = SG(sapi_headers).http_response_code;

        return SAPI_HEADER_SENT_SUCCESSFULLY;
}

static int
php_apache_sapi_read_post(char *buf, uint count_bytes TSRMLS_DC)
{
        apr_size_t len;
        php_struct *ctx = SG(server_context);
        apr_bucket_brigade *brigade;
        apr_bucket *partition;

        brigade = ctx->post_data;
        len = count_bytes;

        switch (apr_brigade_partition(ctx->post_data, count_bytes, &partition)) {
        case APR_SUCCESS:
                apr_brigade_flatten(ctx->post_data, buf, &len);
                brigade = apr_brigade_split(ctx->post_data, partition);
                apr_brigade_destroy(ctx->post_data);
                ctx->post_data = brigade;
                break;
        case APR_INCOMPLETE:
                apr_brigade_flatten(ctx->post_data, buf, &len);
                apr_brigade_cleanup(ctx->post_data);
                break;
        }

        return len;
}
static struct stat*
php_apache_sapi_get_stat(TSRMLS_D)
{
        php_struct *ctx = SG(server_context);

        ctx->finfo.st_uid = ctx->r->finfo.user;
        ctx->finfo.st_gid = ctx->r->finfo.group;
        ctx->finfo.st_dev = ctx->r->finfo.device;
        ctx->finfo.st_ino = ctx->r->finfo.inode;
#ifdef NETWARE
        ctx->finfo.st_atime.tv_sec = apr_time_sec(ctx->r->finfo.atime);
        ctx->finfo.st_mtime.tv_sec = apr_time_sec(ctx->r->finfo.mtime);
        ctx->finfo.st_ctime.tv_sec = apr_time_sec(ctx->r->finfo.ctime);
#else
        ctx->finfo.st_atime = apr_time_sec(ctx->r->finfo.atime);
        ctx->finfo.st_mtime = apr_time_sec(ctx->r->finfo.mtime);
        ctx->finfo.st_ctime = apr_time_sec(ctx->r->finfo.ctime);
#endif

        ctx->finfo.st_size = ctx->r->finfo.size;
        ctx->finfo.st_nlink = ctx->r->finfo.nlink;

        return &ctx->finfo;
}

static char *
php_apache_sapi_read_cookies(TSRMLS_D)
{
        php_struct *ctx = SG(server_context);
        const char *http_cookie;

        http_cookie = apr_table_get(ctx->r->headers_in, "cookie");

        /* The SAPI interface should use 'const char *' */
        return (char *) http_cookie;
}

static char *
php_apache_sapi_getenv(char *name, size_t name_len TSRMLS_DC)
{
        php_struct *ctx = SG(server_context);
        const char *env_var;
        
        env_var = apr_table_get(ctx->r->subprocess_env, name);

        return (char *) env_var;
}

static void
php_apache_sapi_register_variables(zval *track_vars_array TSRMLS_DC)
{
        php_struct *ctx = SG(server_context);
        const apr_array_header_t *arr = apr_table_elts(ctx->r->subprocess_env);
        char *key, *val;
        unsigned int new_val_len;
        
        APR_ARRAY_FOREACH_OPEN(arr, key, val)
                if (!val) {
                        val = "";
                }
                if (sapi_module.input_filter(PARSE_SERVER, key, &val, strlen(val), &new_val_len TSRMLS_CC)) {
                        php_register_variable_safe(key, val, new_val_len, track_vars_array TSRMLS_CC);
                }
        APR_ARRAY_FOREACH_CLOSE()
                
        php_register_variable("PHP_SELF", ctx->r->uri, track_vars_array TSRMLS_CC);
        if (sapi_module.input_filter(PARSE_SERVER, "PHP_SELF", &ctx->r->uri, strlen(ctx->r->uri), &new_val_len TSRMLS_CC)) {
                php_register_variable_safe("PHP_SELF", ctx->r->uri, new_val_len, track_vars_array TSRMLS_CC);
        }
}

static void
php_apache_sapi_flush(void *server_context)
{
        php_struct *ctx;
        apr_bucket_brigade *bb;
        apr_bucket_alloc_t *ba;
        apr_bucket *b;
        ap_filter_t *f; /* output filters */
        TSRMLS_FETCH();

        ctx = server_context;

        /* If we haven't registered a server_context yet,
         * then don't bother flushing. */
        if (!server_context)
                return;

        sapi_send_headers(TSRMLS_C);

        ctx->r->status = SG(sapi_headers).http_response_code;
        SG(headers_sent) = 1;

        f = ctx->f;

        /* Send a flush bucket down the filter chain. The current default
         * handler seems to act on the first flush bucket, but ignores
         * all further flush buckets.
         */
        
        ba = ctx->r->connection->bucket_alloc;
        bb = apr_brigade_create(ctx->r->pool, ba);
        b = apr_bucket_flush_create(ba);
        APR_BRIGADE_INSERT_TAIL(bb, b);
        if (ap_pass_brigade(f->next, bb) != APR_SUCCESS || ctx->r->connection->aborted) {
                php_handle_aborted_connection();
        }
}

static void php_apache_sapi_log_message(char *msg TSRMLS_DC)
{
        php_struct *ctx;

        ctx = SG(server_context);
   
        if (ctx == NULL) { /* we haven't initialized our ctx yet, oh well */
                ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, 0, NULL, "%s", msg);
        }
        else {
                ap_log_error(APLOG_MARK, APLOG_ERR, 0, ctx->r->server, "%s", msg);
        }
}

static int
php_apache_disable_caching(ap_filter_t *f)
{
        /* Identify PHP scripts as non-cacheable, thus preventing 
         * Apache from sending a 304 status when the browser sends
         * If-Modified-Since header.
         */
        f->r->no_local_copy = 1;
        
        return OK;
}

static double php_apache_sapi_get_request_time(TSRMLS_D)
{
        php_struct *ctx = SG(server_context);
        return ((double) apr_time_as_msec(ctx->r->request_time)) / 1000.0;
}

extern zend_module_entry php_apache_module;

static int php_apache2_startup(sapi_module_struct *sapi_module)
{
        if (php_module_startup(sapi_module, &php_apache_module, 1)==FAILURE) {
                return FAILURE;
        }
        return SUCCESS;
}

static sapi_module_struct apache2_sapi_module = {
        "apache2filter",
        "Apache 2.0 Filter",

        php_apache2_startup,                                            /* startup */
        php_module_shutdown_wrapper,                    /* shutdown */

        NULL,                                                                   /* activate */
        NULL,                                                                   /* deactivate */

        php_apache_sapi_ub_write,                               /* unbuffered write */
        php_apache_sapi_flush,                                  /* flush */
        php_apache_sapi_get_stat,                                               /* get uid */
        php_apache_sapi_getenv,                                 /* getenv */

        php_error,                                                              /* error handler */

        php_apache_sapi_header_handler,                 /* header handler */
        php_apache_sapi_send_headers,                   /* send headers handler */
        NULL,                                                                   /* send header handler */

        php_apache_sapi_read_post,                              /* read POST data */
        php_apache_sapi_read_cookies,                   /* read Cookies */

        php_apache_sapi_register_variables,
        php_apache_sapi_log_message,                    /* Log message */
        php_apache_sapi_get_request_time,               /* Get Request Time */
        NULL,                                           /* Child terminate */

        STANDARD_SAPI_MODULE_PROPERTIES
};

static int php_input_filter(ap_filter_t *f, apr_bucket_brigade *bb, 
                ap_input_mode_t mode, apr_read_type_e block, apr_off_t readbytes)
{
        php_struct *ctx;
        apr_status_t rv;
        TSRMLS_FETCH();

        if (f->r->proxyreq) {
                return ap_get_brigade(f->next, bb, mode, block, readbytes);
        }

        ctx = SG(server_context);
        if (ctx == NULL) {
                ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, f->r,
                                         "php failed to get server context");
                return HTTP_INTERNAL_SERVER_ERROR;
        }

        if ((rv = ap_get_brigade(f->next, bb, mode, block, readbytes)) != APR_SUCCESS) {
                return rv;
        }

        if (!ctx->post_data) {
                ctx->post_data = apr_brigade_create(f->r->pool, f->c->bucket_alloc);
        }
        if ((rv = ap_save_brigade(f, &ctx->post_data, &bb, f->r->pool)) != APR_SUCCESS) {
                return rv;
        }
        apr_brigade_cleanup(bb);
        APR_BRIGADE_INSERT_TAIL(bb, apr_bucket_eos_create(bb->bucket_alloc));

        return APR_SUCCESS;
}

static void php_apache_request_ctor(ap_filter_t *f, php_struct *ctx TSRMLS_DC)
{
        char *content_type;
        char *content_length;
        const char *auth;

        PG(during_request_startup) = 0;
        SG(sapi_headers).http_response_code = !f->r->status ? HTTP_OK : f->r->status;
        SG(request_info).content_type = apr_table_get(f->r->headers_in, "Content-Type");
#undef safe_strdup
#define safe_strdup(x) ((x)?strdup((x)):NULL)   
        SG(request_info).query_string = safe_strdup(f->r->args);
        SG(request_info).request_method = f->r->method;
        SG(request_info).proto_num = f->r->proto_num;
        SG(request_info).request_uri = safe_strdup(f->r->uri);
        SG(request_info).path_translated = safe_strdup(f->r->filename);
        f->r->no_local_copy = 1;
        content_type = sapi_get_default_content_type(TSRMLS_C);
        f->r->content_type = apr_pstrdup(f->r->pool, content_type);

        efree(content_type);

        content_length = (char *) apr_table_get(f->r->headers_in, "Content-Length");
        SG(request_info).content_length = (content_length ? atol(content_length) : 0);
        
        apr_table_unset(f->r->headers_out, "Content-Length");
        apr_table_unset(f->r->headers_out, "Last-Modified");
        apr_table_unset(f->r->headers_out, "Expires");
        apr_table_unset(f->r->headers_out, "ETag");

        auth = apr_table_get(f->r->headers_in, "Authorization");
        php_handle_auth_data(auth TSRMLS_CC);

        if (SG(request_info).auth_user == NULL && f->r->user) {
                SG(request_info).auth_user = estrdup(f->r->user);
        }

        ctx->r->user = apr_pstrdup(ctx->r->pool, SG(request_info).auth_user);

        php_request_startup(TSRMLS_C);
}

static void php_apache_request_dtor(ap_filter_t *f TSRMLS_DC)
{
        php_apr_bucket_brigade *pbb = (php_apr_bucket_brigade *)f->ctx;
        
        php_request_shutdown(NULL);

        if (SG(request_info).query_string) {
                free(SG(request_info).query_string);
        }
        if (SG(request_info).request_uri) {
                free(SG(request_info).request_uri);
        }
        if (SG(request_info).path_translated) {
                free(SG(request_info).path_translated);
        }
        
        apr_brigade_destroy(pbb->bb);
}

static int php_output_filter(ap_filter_t *f, apr_bucket_brigade *bb)
{
        php_struct *ctx;
        void *conf = ap_get_module_config(f->r->per_dir_config, &php5_module);
        char *p = get_php_config(conf, "engine", sizeof("engine"));
        zend_file_handle zfd;
        php_apr_bucket_brigade *pbb;
        apr_bucket *b;
        TSRMLS_FETCH();
        
        if (f->r->proxyreq) {
                zend_try {
                        zend_ini_deactivate(TSRMLS_C);
                } zend_end_try();
                return ap_pass_brigade(f->next, bb);
        }
        
        /* handle situations where user turns the engine off */
        if (*p == '0') {
                zend_try {
                        zend_ini_deactivate(TSRMLS_C);
                } zend_end_try();
                return ap_pass_brigade(f->next, bb);
        }       
        
        if(f->ctx) {
                pbb = (php_apr_bucket_brigade *)f->ctx;
        } else {
                pbb = f->ctx = apr_palloc(f->r->pool, sizeof(*pbb));
                pbb->bb = apr_brigade_create(f->r->pool, f->c->bucket_alloc);
        }

        if(ap_save_brigade(NULL, &pbb->bb, &bb, f->r->pool) != APR_SUCCESS) {
                /* Bad */
        }
        
        apr_brigade_cleanup(bb);
        
        /* Check to see if the last bucket in this brigade, it not
         * we have to wait until then. */
        if(!APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(pbb->bb))) {
                return 0;
        }       
        
        /* Setup the CGI variables if this is the main request.. */
        if (f->r->main == NULL || 
                /* .. or if the sub-request envinronment differs from the main-request. */
                f->r->subprocess_env != f->r->main->subprocess_env
        ) {
                /* setup standard CGI variables */
                ap_add_common_vars(f->r);
                ap_add_cgi_vars(f->r);
        }
        
        ctx = SG(server_context);
        if (ctx == NULL) {
                ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, f->r,
                                         "php failed to get server context");
                zend_try {
                        zend_ini_deactivate(TSRMLS_C);
                } zend_end_try();
        return HTTP_INTERNAL_SERVER_ERROR;
        }
        
        ctx->f = f->next; /* save whatever filters are after us in the chain. */

        if (ctx->request_processed) {
                zend_try {
                        zend_ini_deactivate(TSRMLS_C);
                } zend_end_try();
                return ap_pass_brigade(f->next, bb);
        }

        apply_config(conf);
        php_apache_request_ctor(f, ctx TSRMLS_CC);
        
        /* It'd be nice if we could highlight based of a zend_file_handle here....
         * ...but we can't. */
        
        zfd.type = ZEND_HANDLE_STREAM;
        
        zfd.handle.stream.handle = pbb;
        zfd.handle.stream.reader = php_apache_read_stream;
        zfd.handle.stream.closer = NULL;
        zfd.handle.stream.fsizer = php_apache_fsizer_stream;
        zfd.handle.stream.isatty = 0;
        
        zfd.filename = f->r->filename;
        zfd.opened_path = NULL;
        zfd.free_filename = 0;
        
        php_execute_script(&zfd TSRMLS_CC);

        apr_table_set(ctx->r->notes, "mod_php_memory_usage",
                apr_psprintf(ctx->r->pool, "%lu", (unsigned long) zend_memory_peak_usage(1 TSRMLS_CC)));
                
        php_apache_request_dtor(f TSRMLS_CC);
                
        if (!f->r->main) {
                ctx->request_processed = 1;
        }
        
        b = apr_bucket_eos_create(f->c->bucket_alloc);
        APR_BRIGADE_INSERT_TAIL(pbb->bb,  b);
        
        /* Pass whatever is left on the brigade. */
        return ap_pass_brigade(f->next, pbb->bb);
}

static apr_status_t
php_apache_server_shutdown(void *tmp)
{
        apache2_sapi_module.shutdown(&apache2_sapi_module);
        sapi_shutdown();
#ifdef ZTS
        tsrm_shutdown();
#endif
        return APR_SUCCESS;
}

static void php_apache_add_version(apr_pool_t *p)
{
        TSRMLS_FETCH();
        if (PG(expose_php)) {
                ap_add_version_component(p, "PHP/" PHP_VERSION);
        }
}

static int php_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp)
{
#ifndef ZTS
        int threaded_mpm;

        ap_mpm_query(AP_MPMQ_IS_THREADED, &threaded_mpm);
        if(threaded_mpm) {
                ap_log_error(APLOG_MARK, APLOG_CRIT, 0, 0, "Apache is running a threaded MPM, but your PHP Module is not compiled to be threadsafe.  You need to recompile PHP.");
                return DONE;
        }
#endif
    /* When this is NULL, apache won't override the hard-coded default
     * php.ini path setting. */
    apache2_php_ini_path_override = NULL;
    return OK;
}

static int
php_apache_server_startup(apr_pool_t *pconf, apr_pool_t *plog,
                          apr_pool_t *ptemp, server_rec *s)
{
        void *data = NULL;
        const char *userdata_key = "apache2filter_post_config";

        /* Apache will load, unload and then reload a DSO module. This
         * prevents us from starting PHP until the second load. */
        apr_pool_userdata_get(&data, userdata_key, s->process->pool);
        if (data == NULL) {
                /* We must use set() here and *not* setn(), otherwise the
                 * static string pointed to by userdata_key will be mapped
                 * to a different location when the DSO is reloaded and the
                 * pointers won't match, causing get() to return NULL when
                 * we expected it to return non-NULL. */
                apr_pool_userdata_set((const void *)1, userdata_key,
                                                          apr_pool_cleanup_null, s->process->pool);
                return OK;
        }

        /* Set up our overridden path. */
        if (apache2_php_ini_path_override) {
                apache2_sapi_module.php_ini_path_override = apache2_php_ini_path_override;
        }
#ifdef ZTS
        tsrm_startup(1, 1, 0, NULL);
#endif
        sapi_startup(&apache2_sapi_module);
        apache2_sapi_module.startup(&apache2_sapi_module);
        apr_pool_cleanup_register(pconf, NULL, php_apache_server_shutdown, apr_pool_cleanup_null);
        php_apache_add_version(pconf);

        return OK;
}

static void php_add_filter(request_rec *r, ap_filter_t *f)
{
        int output = (f == r->output_filters);

        /* for those who still have Set*Filter PHP configured */
        while (f) {
                if (strcmp(f->frec->name, "PHP") == 0) {
                        ap_log_error(APLOG_MARK, APLOG_WARNING,
                                     0, r->server,
                                     "\"Set%sFilter PHP\" already configured for %s",
                                     output ? "Output" : "Input", r->uri);
                        return;
                }
                f = f->next;
        }

        if (output) {
                ap_add_output_filter("PHP", NULL, r, r->connection);
        } else {
                ap_add_input_filter("PHP", NULL, r, r->connection);
        }
}

static void php_insert_filter(request_rec *r)
{
        int content_type_len = strlen("application/x-httpd-php");

        if (r->content_type && !strncmp(r->content_type, "application/x-httpd-php", content_type_len-1)) {
                if (r->content_type[content_type_len] == '\0' || !strncmp(r->content_type+content_type_len, "-source", sizeof("-source"))) { 
                        php_add_filter(r, r->output_filters);
                        php_add_filter(r, r->input_filters);
                }       
        }
}

static apr_status_t php_server_context_cleanup(void *data_)
{
        void **data = data_;
        *data = NULL;
        return APR_SUCCESS;
}

static int php_post_read_request(request_rec *r)
{
        php_struct *ctx;
        TSRMLS_FETCH();

        /* Initialize filter context */
        SG(server_context) = ctx = apr_pcalloc(r->pool, sizeof(*ctx));

        /* register a cleanup so we clear out the SG(server_context)
         * after each request. Note: We pass in the pointer to the
         * server_context in case this is handled by a different thread. */
        apr_pool_cleanup_register(r->pool, (void *)&SG(server_context),
                                                          php_server_context_cleanup,
                                                          apr_pool_cleanup_null);

        /* Save the entire request, so we can get the input or output
         * filters if we need them. */
        ctx->r = r;

        return OK;
}

static void php_register_hook(apr_pool_t *p)
{
        ap_hook_pre_config(php_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
        ap_hook_post_config(php_apache_server_startup, NULL, NULL, APR_HOOK_MIDDLE);
        ap_hook_insert_filter(php_insert_filter, NULL, NULL, APR_HOOK_MIDDLE);
        ap_hook_post_read_request(php_post_read_request, NULL, NULL, APR_HOOK_MIDDLE);
        ap_register_output_filter("PHP", php_output_filter, php_apache_disable_caching, AP_FTYPE_RESOURCE);
        ap_register_input_filter("PHP", php_input_filter, php_apache_disable_caching, AP_FTYPE_RESOURCE);
}

static size_t php_apache_read_stream(void *handle, char *buf, size_t wantlen TSRMLS_DC)
{
        php_apr_bucket_brigade *pbb = (php_apr_bucket_brigade *)handle;
        apr_bucket_brigade *rbb;
        apr_size_t readlen;
        apr_bucket *b = NULL;
        
        rbb = pbb->bb;
        
        if((apr_brigade_partition(pbb->bb, wantlen, &b) == APR_SUCCESS) && b){
                pbb->bb = apr_brigade_split(rbb, b);
        }       

        readlen = wantlen;
        apr_brigade_flatten(rbb, buf, &readlen);
        apr_brigade_cleanup(rbb);
        
        return readlen;
}

static size_t php_apache_fsizer_stream(void *handle TSRMLS_DC)
{
        php_apr_bucket_brigade *pbb = (php_apr_bucket_brigade *)handle;
        apr_off_t actual = 0;

        if (apr_brigade_length(pbb->bb, 1, &actual) == APR_SUCCESS) {
                return actual;
        }

        return 0;
}

AP_MODULE_DECLARE_DATA module php5_module = {
        STANDARD20_MODULE_STUFF,
        create_php_config,              /* create per-directory config structure */
        merge_php_config,               /* merge per-directory config structures */
        NULL,                                   /* create per-server config structure */
        NULL,                                   /* merge per-server config structures */
        php_dir_cmds,                   /* command apr_table_t */
        php_register_hook               /* register hooks */
};

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */

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