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php-src/sapi/isapi/php4isapi.c
Zeev Suraski e043439ff6 Update the license with the new clause 6
2000-05-18 15:34:45 +00:00

650 lines
18 KiB
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/*
+----------------------------------------------------------------------+
| PHP version 4.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997, 1998, 1999, 2000 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: Zeev Suraski <zeev@zend.com> |
| Zeus Support: Ben Mansell <ben@zeus.com> |
+----------------------------------------------------------------------+
*/
#ifdef PHP_WIN32
# include <windows.h>
# include <process.h>
# define SEPARATOR '\\'
#else
# define __try
# define __except(val)
# define __declspec(foo)
# define SEPARATOR '/'
#endif
#include <httpext.h>
#include <httpfilt.h>
#include <httpext.h>
#include "php.h"
#include "main.h"
#include "SAPI.h"
#include "php_globals.h"
#include "ext/standard/info.h"
#include "php_variables.h"
#include "php_ini.h"
#ifdef WITH_ZEUS
# include "httpext.h"
# include <errno.h>
# define GetLastError() errno
#endif
#define MAX_STATUS_LENGTH sizeof("xxxx LONGEST STATUS DESCRIPTION")
#define ISAPI_SERVER_VAR_BUF_SIZE 1024
#define ISAPI_POST_DATA_BUF 1024
static zend_bool bFilterLoaded=0;
static zend_bool bTerminateThreadsOnError=0;
static char *isapi_server_variables[] = {
"ALL_HTTP",
"APPL_MD_PATH",
"APPL_PHYSICAL_PATH",
"AUTH_PASSWORD",
"AUTH_TYPE",
"AUTH_USER",
"CERT_COOKIE",
"CERT_FLAGS",
"CERT_ISSUER",
"CERT_KEYSIZE",
"CERT_SECRETKEYSIZE",
"CERT_SERIALNUMBER",
"CERT_SERVER_ISSUER",
"CERT_SERVER_SUBJECT",
"CERT_SUBJECT",
"CONTENT_LENGTH",
"CONTENT_TYPE",
"LOGON_USER",
"HTTP_COOKIE",
"HTTPS",
"HTTPS_KEYSIZE",
"HTTPS_SECRETKEYSIZE",
"HTTPS_SERVER_ISSUER",
"HTTPS_SERVER_SUBJECT",
"INSTANCE_ID",
"INSTANCE_META_PATH",
"PATH_INFO",
"PATH_TRANSLATED",
"QUERY_STRING",
"REMOTE_ADDR",
"REMOTE_HOST",
"REMOTE_USER",
"REQUEST_METHOD",
"SCRIPT_NAME",
"SERVER_NAME",
"SERVER_PORT",
"SERVER_PORT_SECURE",
"SERVER_PROTOCOL",
"SERVER_SOFTWARE",
"URL",
NULL
};
static void php_info_isapi(ZEND_MODULE_INFO_FUNC_ARGS)
{
char **p = isapi_server_variables;
char variable_buf[ISAPI_SERVER_VAR_BUF_SIZE];
DWORD variable_len;
LPEXTENSION_CONTROL_BLOCK lpECB;
SLS_FETCH();
lpECB = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
php_info_print_table_start();
php_info_print_table_header(2, "Server Variable", "Value");
while (*p) {
variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
if (lpECB->GetServerVariable(lpECB->ConnID, *p, variable_buf, &variable_len)
&& variable_buf[0]) {
php_info_print_table_row(2, *p, variable_buf);
} else if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
char *tmp_variable_buf;
tmp_variable_buf = (char *) emalloc(variable_len);
if (lpECB->GetServerVariable(lpECB->ConnID, *p, tmp_variable_buf, &variable_len)
&& variable_buf[0]) {
php_info_print_table_row(2, *p, tmp_variable_buf);
}
efree(tmp_variable_buf);
}
p++;
}
php_info_print_table_end();
}
static zend_module_entry php_isapi_module = {
"ISAPI",
NULL,
NULL,
NULL,
NULL,
NULL,
php_info_isapi,
STANDARD_MODULE_PROPERTIES
};
static int sapi_isapi_ub_write(const char *str, uint str_length)
{
DWORD num_bytes = str_length;
LPEXTENSION_CONTROL_BLOCK ecb;
SLS_FETCH();
ecb = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
if (ecb->WriteClient(ecb->ConnID, (char *) str, &num_bytes, HSE_IO_SYNC ) == FALSE) {
zend_bailout();
}
return num_bytes;
}
static int sapi_isapi_header_handler(sapi_header_struct *sapi_header, sapi_headers_struct *sapi_headers SLS_DC)
{
return SAPI_HEADER_ADD;
}
static void accumulate_header_length(sapi_header_struct *sapi_header, uint *total_length)
{
*total_length += sapi_header->header_len+2;
}
static void concat_header(sapi_header_struct *sapi_header, char **combined_headers_ptr)
{
memcpy(*combined_headers_ptr, sapi_header->header, sapi_header->header_len);
*combined_headers_ptr += sapi_header->header_len;
**combined_headers_ptr = '\r';
(*combined_headers_ptr)++;
**combined_headers_ptr = '\n';
(*combined_headers_ptr)++;
}
static int sapi_isapi_send_headers(sapi_headers_struct *sapi_headers SLS_DC)
{
uint total_length = 2; /* account for the trailing \r\n */
char *combined_headers, *combined_headers_ptr;
LPEXTENSION_CONTROL_BLOCK lpECB = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
HSE_SEND_HEADER_EX_INFO header_info;
char status_buf[MAX_STATUS_LENGTH];
sapi_header_struct default_content_type;
PLS_FETCH();
/* Obtain headers length */
if (SG(sapi_headers).send_default_content_type) {
sapi_get_default_content_type_header(&default_content_type SLS_CC);
accumulate_header_length(&default_content_type, (void *) &total_length);
}
zend_llist_apply_with_argument(&SG(sapi_headers).headers, (void (*)(void *, void *)) accumulate_header_length, (void *) &total_length);
/* Generate headers */
combined_headers = (char *) emalloc(total_length+1);
combined_headers_ptr = combined_headers;
if (SG(sapi_headers).send_default_content_type) {
concat_header(&default_content_type, (void *) &combined_headers_ptr);
sapi_free_header(&default_content_type); /* we no longer need it */
}
zend_llist_apply_with_argument(&SG(sapi_headers).headers, (void (*)(void *, void *)) concat_header, (void *) &combined_headers_ptr);
*combined_headers_ptr++ = '\r';
*combined_headers_ptr++ = '\n';
*combined_headers_ptr = 0;
switch (SG(sapi_headers).http_response_code) {
case 200:
header_info.pszStatus = "200 OK";
break;
case 302:
header_info.pszStatus = "302 Moved Temporarily";
break;
case 401:
header_info.pszStatus = "401 Authorization Required";
break;
default:
snprintf(status_buf, MAX_STATUS_LENGTH, "%d Undescribed", SG(sapi_headers).http_response_code);
header_info.pszStatus = status_buf;
break;
}
header_info.cchStatus = strlen(header_info.pszStatus);
header_info.pszHeader = combined_headers;
header_info.cchHeader = total_length;
lpECB->dwHttpStatusCode = SG(sapi_headers).http_response_code;
lpECB->ServerSupportFunction(lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
efree(combined_headers);
if (SG(sapi_headers).http_status_line) {
efree(SG(sapi_headers).http_status_line);
}
return SAPI_HEADER_SENT_SUCCESSFULLY;
}
static int php_isapi_startup(sapi_module_struct *sapi_module)
{
if (php_module_startup(sapi_module)==FAILURE
|| zend_startup_module(&php_isapi_module)==FAILURE) {
return FAILURE;
} else {
bTerminateThreadsOnError = (zend_bool) INI_INT("isapi.terminate_threads_on_error");
return SUCCESS;
}
}
static int sapi_isapi_read_post(char *buffer, uint count_bytes SLS_DC)
{
LPEXTENSION_CONTROL_BLOCK lpECB = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
DWORD read_from_buf=0;
DWORD read_from_input=0;
DWORD total_read=0;
if ((DWORD) SG(read_post_bytes) < lpECB->cbAvailable) {
read_from_buf = MIN(lpECB->cbAvailable-SG(read_post_bytes), count_bytes);
memcpy(buffer, lpECB->lpbData+SG(read_post_bytes), read_from_buf);
total_read += read_from_buf;
}
if (read_from_buf<count_bytes
&& (SG(read_post_bytes)+read_from_buf) < lpECB->cbTotalBytes) {
DWORD cbRead=0, cbSize;
read_from_input = MIN(count_bytes-read_from_buf, lpECB->cbTotalBytes-SG(read_post_bytes)-read_from_buf);
while (cbRead < read_from_input) {
cbSize = read_from_input - cbRead;
if (!lpECB->ReadClient(lpECB->ConnID, buffer+read_from_buf+cbRead, &cbSize) || cbSize==0) {
break;
}
cbRead += cbSize;
}
total_read += cbRead;
}
return total_read;
}
static char *sapi_isapi_read_cookies(SLS_D)
{
LPEXTENSION_CONTROL_BLOCK lpECB = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
char variable_buf[ISAPI_SERVER_VAR_BUF_SIZE];
DWORD variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
if (lpECB->GetServerVariable(lpECB->ConnID, "HTTP_COOKIE", variable_buf, &variable_len)) {
return estrndup(variable_buf, variable_len);
} else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
char *tmp_variable_buf = (char *) emalloc(variable_len+1);
if (lpECB->GetServerVariable(lpECB->ConnID, "HTTP_COOKIE", tmp_variable_buf, &variable_len)) {
tmp_variable_buf[variable_len] = 0;
return tmp_variable_buf;
} else {
efree(tmp_variable_buf);
}
}
return NULL;
}
static void sapi_isapi_register_server_variables(zval *track_vars_array ELS_DC SLS_DC PLS_DC)
{
char static_variable_buf[ISAPI_SERVER_VAR_BUF_SIZE];
char *variable_buf;
DWORD variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
char *variable;
char *strtok_buf = NULL;
LPEXTENSION_CONTROL_BLOCK lpECB;
char **p = isapi_server_variables;
lpECB = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
/* Register the standard ISAPI variables */
while (*p) {
variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
if (lpECB->GetServerVariable(lpECB->ConnID, *p, static_variable_buf, &variable_len)
&& static_variable_buf[0]) {
php_register_variable(*p, static_variable_buf, track_vars_array ELS_CC PLS_CC);
} else if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
variable_buf = (char *) emalloc(variable_len);
if (lpECB->GetServerVariable(lpECB->ConnID, *p, variable_buf, &variable_len)
&& variable_buf[0]) {
php_register_variable(*p, variable_buf, track_vars_array ELS_CC PLS_CC);
}
efree(variable_buf);
}
p++;
}
/* PHP_SELF support */
#ifdef WITH_ZEUS
if (lpECB->GetServerVariable(lpECB->ConnID, "PATH_INFO", static_variable_buf, &variable_len)
#else
if (lpECB->GetServerVariable(lpECB->ConnID, "SCRIPT_NAME", static_variable_buf, &variable_len)
#endif
&& static_variable_buf[0]) {
php_register_variable("PHP_SELF", static_variable_buf, track_vars_array ELS_CC PLS_CC);
}
/* Register the internal bits of ALL_HTTP */
variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
if (lpECB->GetServerVariable(lpECB->ConnID, "ALL_HTTP", static_variable_buf, &variable_len)) {
variable_buf = static_variable_buf;
} else {
if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
variable_buf = (char *) emalloc(variable_len);
if (!lpECB->GetServerVariable(lpECB->ConnID, "ALL_HTTP", variable_buf, &variable_len)) {
efree(variable_buf);
return;
}
} else {
return;
}
}
variable = php_strtok_r(variable_buf, "\r\n", &strtok_buf);
while (variable) {
char *colon = strchr(variable, ':');
if (colon) {
char *value = colon+1;
while (*value==' ') {
value++;
}
*colon = 0;
php_register_variable(variable, value, track_vars_array ELS_CC PLS_CC);
*colon = ':';
}
variable = php_strtok_r(NULL, "\r\n", &strtok_buf);
}
if (variable_buf!=static_variable_buf) {
efree(variable_buf);
}
}
static sapi_module_struct sapi_module = {
"ISAPI", /* name */
php_isapi_startup, /* startup */
php_module_shutdown_wrapper, /* shutdown */
NULL, /* activate */
NULL, /* deactivate */
sapi_isapi_ub_write, /* unbuffered write */
NULL, /* flush */
NULL, /* get uid */
NULL, /* getenv */
php_error, /* error handler */
sapi_isapi_header_handler, /* header handler */
sapi_isapi_send_headers, /* send headers handler */
NULL, /* send header handler */
sapi_isapi_read_post, /* read POST data */
sapi_isapi_read_cookies, /* read Cookies */
sapi_isapi_register_server_variables, /* register server variables */
NULL, /* Log message */
NULL, /* Block interruptions */
NULL, /* Unblock interruptions */
STANDARD_SAPI_MODULE_PROPERTIES
};
BOOL WINAPI GetFilterVersion(PHTTP_FILTER_VERSION pFilterVersion)
{
bFilterLoaded = 1;
pFilterVersion->dwFilterVersion = HTTP_FILTER_REVISION;
strcpy(pFilterVersion->lpszFilterDesc, sapi_module.name);
pFilterVersion->dwFlags= (SF_NOTIFY_AUTHENTICATION | SF_NOTIFY_PREPROC_HEADERS);
return TRUE;
}
DWORD WINAPI HttpFilterProc(PHTTP_FILTER_CONTEXT pfc, DWORD notificationType, LPVOID pvNotification)
{
SLS_FETCH();
switch (notificationType) {
case SF_NOTIFY_PREPROC_HEADERS:
SG(request_info).auth_user = NULL;
SG(request_info).auth_password = NULL;
break;
case SF_NOTIFY_AUTHENTICATION: {
char *auth_user = ((HTTP_FILTER_AUTHENT *) pvNotification)->pszUser;
char *auth_password = ((HTTP_FILTER_AUTHENT *) pvNotification)->pszPassword;
if (auth_user && auth_user[0]) {
SG(request_info).auth_user = estrdup(auth_user);
}
if (auth_password && auth_password[0]) {
SG(request_info).auth_password = estrdup(auth_password);
}
auth_user[0] = 0;
auth_password[0] = 0;
return SF_STATUS_REQ_HANDLED_NOTIFICATION;
}
break;
}
return SF_STATUS_REQ_NEXT_NOTIFICATION;
}
static void init_request_info(sapi_globals_struct *sapi_globals, LPEXTENSION_CONTROL_BLOCK lpECB)
{
SG(request_info).request_method = lpECB->lpszMethod;
SG(request_info).query_string = lpECB->lpszQueryString;
SG(request_info).path_translated = lpECB->lpszPathTranslated;
SG(request_info).request_uri = lpECB->lpszPathInfo;
SG(request_info).content_type = lpECB->lpszContentType;
SG(request_info).content_length = lpECB->cbTotalBytes;
{
char *path_end = strrchr(SG(request_info).path_translated, SEPARATOR);
if (path_end) {
*path_end = 0;
V_CHDIR(SG(request_info).path_translated);
*path_end = SEPARATOR;
}
}
if (!bFilterLoaded) { /* we don't have valid ISAPI Filter information */
SG(request_info).auth_user = SG(request_info).auth_password = NULL;
}
}
static void php_isapi_report_exception(char *message, int message_len SLS_DC)
{
if (!SG(headers_sent)) {
HSE_SEND_HEADER_EX_INFO header_info;
LPEXTENSION_CONTROL_BLOCK lpECB = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
header_info.pszStatus = "500 Internal Server Error";
header_info.cchStatus = strlen(header_info.pszStatus);
header_info.pszHeader = "Content-Type: text/html\r\n\r\n";
header_info.cchHeader = strlen(header_info.pszHeader);
lpECB->dwHttpStatusCode = 500;
lpECB->ServerSupportFunction(lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
SG(headers_sent)=1;
}
sapi_isapi_ub_write(message, message_len);
}
BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer)
{
pVer->dwExtensionVersion = HSE_VERSION;
#ifdef WITH_ZEUS
strncpy( pVer->lpszExtensionDesc, sapi_module.name, HSE_MAX_EXT_DLL_NAME_LEN);
#else
lstrcpyn(pVer->lpszExtensionDesc, sapi_module.name, HSE_MAX_EXT_DLL_NAME_LEN);
#endif
return TRUE;
}
static void my_endthread()
{
#ifdef PHP_WIN32
if (bTerminateThreadsOnError) {
_endthread();
}
#endif
}
#ifdef PHP_WIN32
// ___except can only call a function, so we have to do this
// to retrieve the pointer.
BOOL exceptionhandler(LPEXCEPTION_POINTERS *e,LPEXCEPTION_POINTERS ep)
{
*e=ep;
return TRUE;
}
#endif
DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
{
zend_file_handle file_handle;
zend_bool stack_overflown=0;
SLS_FETCH();
CLS_FETCH();
ELS_FETCH();
PLS_FETCH();
#ifdef PHP_WIN32
LPEXCEPTION_POINTERS e;
#endif
if (setjmp(EG(bailout))!=0) {
php_request_shutdown(NULL);
return HSE_STATUS_ERROR;
}
__try {
init_request_info(sapi_globals, lpECB);
SG(server_context) = lpECB;
file_handle.filename = sapi_globals->request_info.path_translated;
file_handle.free_filename = 0;
file_handle.type = ZEND_HANDLE_FILENAME;
php_request_startup(CLS_C ELS_CC PLS_CC SLS_CC);
php_execute_script(&file_handle CLS_CC ELS_CC PLS_CC);
if (SG(request_info).cookie_data) {
efree(SG(request_info).cookie_data);
}
#ifdef PHP_WIN32
} __except(exceptionhandler(&e,GetExceptionInformation())) {
#else
} __except(EXCEPTION_EXECUTE_HANDLER) {
#endif
#ifdef PHP_WIN32
char buf[1024];
if (_exception_code()==EXCEPTION_STACK_OVERFLOW) {
LPBYTE lpPage;
static SYSTEM_INFO si;
static MEMORY_BASIC_INFORMATION mi;
static DWORD dwOldProtect;
GetSystemInfo(&si);
/* Get page ESP is pointing to */
_asm mov lpPage, esp;
/* Get stack allocation base */
VirtualQuery(lpPage, &mi, sizeof(mi));
/* Go to the page below the current page */
lpPage = (LPBYTE) (mi.BaseAddress) - si.dwPageSize;
/* Free pages below current page */
if (!VirtualFree(mi.AllocationBase, (LPBYTE)lpPage - (LPBYTE) mi.AllocationBase, MEM_DECOMMIT)) {
_endthread();
}
/* Restore the guard page */
if (!VirtualProtect(lpPage, si.dwPageSize, PAGE_GUARD | PAGE_READWRITE, &dwOldProtect)) {
_endthread();
}
CG(unclean_shutdown)=1;
_snprintf(buf,sizeof(buf)-1,"PHP has encountered a Stack overflow");
php_isapi_report_exception(buf, strlen(buf) SLS_CC);
} else if (_exception_code()==EXCEPTION_ACCESS_VIOLATION) {
_snprintf(buf,sizeof(buf)-1,"PHP has encountered an Access Violation at %p",e->ExceptionRecord->ExceptionAddress);
php_isapi_report_exception(buf, strlen(buf) SLS_CC);
my_endthread();
} else {
_snprintf(buf,sizeof(buf)-1,"PHP has encountered an Unhandled Exception Code %d at %p",e->ExceptionRecord->ExceptionCode , e->ExceptionRecord->ExceptionAddress);
php_isapi_report_exception(buf, strlen(buf) SLS_CC);
my_endthread();
}
#endif
}
__try {
php_request_shutdown(NULL);
} __except(EXCEPTION_EXECUTE_HANDLER) {
my_endthread();
}
return HSE_STATUS_SUCCESS;
}
__declspec(dllexport) BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
switch (fdwReason) {
case DLL_PROCESS_ATTACH:
tsrm_startup(1, 1, 0);
sapi_startup(&sapi_module);
if (sapi_module.startup) {
sapi_module.startup(&sapi_module);
}
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
ts_free_thread();
break;
case DLL_PROCESS_DETACH:
if (sapi_module.shutdown) {
sapi_module.shutdown(&sapi_module);
}
tsrm_shutdown();
break;
}
return TRUE;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
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