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|
/*
+----------------------------------------------------------------------+
| PHP version 4.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2001 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.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 |
+----------------------------------------------------------------------+
*/
#include <fcntl.h>
#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"
#include "apr_strings.h"
#include "ap_config.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 "php_apache.h"
static int
php_apache_sapi_ub_write(const char *str, uint str_length TSRMLS_DC)
{
apr_bucket *b;
apr_bucket_brigade *bb;
php_struct *ctx;
uint now;
ctx = SG(server_context);
if (str_length == 0) return 0;
bb = apr_brigade_create(ctx->f->r->pool);
while (str_length > 0) {
now = MIN(str_length, 4096);
b = apr_bucket_transient_create(str, now);
APR_BRIGADE_INSERT_TAIL(bb, b);
str += now;
str_length -= now;
}
if (ap_pass_brigade(ctx->f->next, bb) != APR_SUCCESS) {
php_handle_aborted_connection();
}
return str_length;
}
static int
php_apache_sapi_header_handler(sapi_header_struct *sapi_header, sapi_headers_struct *sapi_headers TSRMLS_DC)
{
php_struct *ctx = SG(server_context);
char *val;
val = strchr(sapi_header->header, ':');
if (!val) return 0;
*val = '\0';
do {
val++;
} while (*val == ' ');
if (!strcasecmp(sapi_header->header, "content-type"))
ctx->f->r->content_type = apr_pstrdup(ctx->f->r->pool, val);
else if (sapi_header->replace)
apr_table_set(ctx->f->r->headers_out, sapi_header->header, val);
else
apr_table_add(ctx->f->r->headers_out, sapi_header->header, val);
sapi_free_header(sapi_header);
return 0;
}
static int
php_apache_sapi_send_headers(sapi_headers_struct *sapi_headers TSRMLS_DC)
{
php_struct *ctx = SG(server_context);
ctx->f->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)
{
int n;
int to_read;
php_struct *ctx = SG(server_context);
to_read = ctx->post_len - ctx->post_idx;
n = MIN(to_read, count_bytes);
if (n > 0) {
memcpy(buf, ctx->post_data + ctx->post_idx, n);
ctx->post_idx += n;
} else {
if (ctx->post_data) free(ctx->post_data);
ctx->post_data = NULL;
}
return n;
}
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->f->r->headers_in, "cookie");
/* The SAPI interface should use 'const char *' */
return (char *) http_cookie;
}
static void
php_apache_sapi_register_variables(zval *track_vars_array TSRMLS_DC)
{
php_struct *ctx = SG(server_context);
apr_array_header_t *arr = apr_table_elts(ctx->f->r->subprocess_env);
char *key, *val;
APR_ARRAY_FOREACH_OPEN(arr, key, val)
if (!val) val = empty_string;
php_register_variable(key, val, track_vars_array TSRMLS_CC);
APR_ARRAY_FOREACH_CLOSE()
php_register_variable("PHP_SELF", ctx->f->r->uri, track_vars_array TSRMLS_CC);
}
static void
php_apache_sapi_flush(void *server_context)
{
php_struct *ctx = server_context;
apr_bucket_brigade *bb;
apr_bucket *b;
if (!server_context)
return;
/* 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.
*/
bb = apr_brigade_create(ctx->f->r->pool);
b = apr_bucket_flush_create();
APR_BRIGADE_INSERT_TAIL(bb, b);
if (ap_pass_brigade(ctx->f->next, bb) != APR_SUCCESS) {
php_handle_aborted_connection();
}
}
static void php_apache_sapi_log_message(char *msg)
{
php_struct *ctx;
TSRMLS_FETCH();
ctx = SG(server_context);
/* We use APLOG_STARTUP because it keeps us from printing the
* data and time information at the beginning of the error log
* line. Not sure if this is correct, but it mirrors what happens
* with Apache 1.3 -- rbb
*/
ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO | APLOG_STARTUP, 0, ctx->f->r->server, "%s", msg);
}
static sapi_module_struct apache2_sapi_module = {
"apache2filter",
"Apache 2.0 Filter",
php_module_startup, /* startup */
php_module_shutdown_wrapper, /* shutdown */
NULL, /* activate */
NULL, /* deactivate */
php_apache_sapi_ub_write, /* unbuffered write */
php_apache_sapi_flush, /* flush */
NULL, /* get uid */
NULL, /* 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 */
NULL, /* Block interruptions */
NULL, /* Unblock interruptions */
STANDARD_SAPI_MODULE_PROPERTIES
};
AP_MODULE_DECLARE_DATA module php4_module;
#define INIT_CTX \
if (ctx == NULL) { \
/* Initialize filter context */ \
SG(server_context) = ctx = apr_pcalloc(f->r->pool, sizeof(*ctx)); \
ctx->bb = apr_brigade_create(f->c->pool); \
}
static int php_input_filter(ap_filter_t *f, apr_bucket_brigade *bb,
ap_input_mode_t mode, apr_off_t *readbytes)
{
php_struct *ctx;
long old_index;
apr_bucket *b;
const char *str;
apr_ssize_t n;
apr_status_t rv;
TSRMLS_FETCH();
if (f->r->proxyreq) {
return ap_get_brigade(f->next, bb, mode, readbytes);
}
ctx = SG(server_context);
INIT_CTX;
if ((rv = ap_get_brigade(f->next, bb, mode, readbytes)) != APR_SUCCESS) {
return rv;
}
APR_BRIGADE_FOREACH(b, bb) {
apr_bucket_read(b, &str, &n, 1);
if (n > 0) {
old_index = ctx->post_len;
ctx->post_len += n;
ctx->post_data = realloc(ctx->post_data, ctx->post_len + 1);
memcpy(ctx->post_data + old_index, str, n);
}
}
return APR_SUCCESS;
}
static void php_apache_request_ctor(ap_filter_t *f, php_struct *ctx TSRMLS_DC)
{
char *content_type;
const char *auth;
PG(during_request_startup) = 0;
SG(sapi_headers).http_response_code = 200;
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).request_uri = safe_strdup(f->r->uri);
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);
SG(request_info).post_data = ctx->post_data;
SG(request_info).post_data_length = ctx->post_len;
efree(content_type);
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");
apr_table_unset(f->r->headers_in, "Connection");
auth = apr_table_get(f->r->headers_in, "Authorization");
php_handle_auth_data(auth TSRMLS_CC);
php_request_startup(TSRMLS_C);
}
static void php_apache_request_dtor(ap_filter_t *f TSRMLS_DC)
{
php_request_shutdown(NULL);
#undef safe_free
#define safe_free(x) ((x)?free((x)):0)
safe_free(SG(request_info).query_string);
safe_free(SG(request_info).request_uri);
}
static int php_output_filter(ap_filter_t *f, apr_bucket_brigade *bb)
{
php_struct *ctx;
apr_bucket *b;
void *conf = ap_get_module_config(f->r->per_dir_config, &php4_module);
TSRMLS_FETCH();
if (f->r->proxyreq) {
return ap_pass_brigade(f->next, bb);
}
ctx = SG(server_context);
INIT_CTX;
ctx->f = f;
/* states:
* 0: request startup
* 1: collecting data
* 2: script execution and request shutdown
*/
if (ctx->state == 0) {
apply_config(conf);
ctx->state++;
php_apache_request_ctor(f, ctx TSRMLS_CC);
}
/* moves all buckets from bb to ctx->bb */
ap_save_brigade(f, &ctx->bb, &bb, f->r->pool);
/* If we have received all data from the previous filters,
* we "flatten" the buckets by creating a single string buffer.
*/
if (ctx->state == 1 && APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(ctx->bb))) {
zend_file_handle zfd;
apr_bucket *eos;
/* We want to execute only one script per request.
* A bug in Apache or other filters could cause us
* to reenter php_filter during script execution, so
* we protect ourselves here.
*/
ctx->state = 2;
/* Handle phpinfo/phpcredits/built-in images */
if (!php_handle_special_queries(TSRMLS_C)) {
b = APR_BRIGADE_FIRST(ctx->bb);
if (APR_BUCKET_IS_FILE(b)) {
const char *path;
apr_file_name_get(&path, ((apr_bucket_file *) b->data)->fd);
zfd.type = ZEND_HANDLE_FILENAME;
zfd.filename = (char *) path;
zfd.free_filename = 0;
zfd.opened_path = NULL;
php_execute_script(&zfd TSRMLS_CC);
} else {
#define NO_DATA "The PHP Filter did not receive suitable input data"
eos = apr_bucket_transient_create(NO_DATA, sizeof(NO_DATA)-1);
APR_BRIGADE_INSERT_HEAD(bb, eos);
}
}
php_apache_request_dtor(f TSRMLS_CC);
SG(server_context) = 0;
/* Pass EOS bucket to next filter to signal end of request */
eos = apr_bucket_eos_create();
APR_BRIGADE_INSERT_TAIL(bb, eos);
return ap_pass_brigade(f->next, bb);
} else
apr_brigade_destroy(bb);
return APR_SUCCESS;
}
static apr_status_t
php_apache_server_shutdown(void *tmp)
{
apache2_sapi_module.shutdown(&apache2_sapi_module);
sapi_shutdown();
tsrm_shutdown();
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 void
php_apache_server_startup(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
tsrm_startup(1, 1, 0, NULL);
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_register_module();
php_apache_add_version(pconf);
}
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 | APLOG_NOERRNO,
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)
{
if (r->content_type &&
strcmp(r->content_type, "application/x-httpd-php") == 0) {
php_add_filter(r, r->output_filters);
php_add_filter(r, r->input_filters);
}
}
static void php_register_hook(apr_pool_t *p)
{
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_register_output_filter("PHP", php_output_filter, AP_FTYPE_CONTENT);
ap_register_input_filter("PHP", php_input_filter, AP_FTYPE_CONTENT);
}
AP_MODULE_DECLARE_DATA module php4_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 tw=78 fdm=marker
* vim<600: sw=4 ts=4 tw=78
*/
|