static void slib_cleanup (ap_os_dso_handle_t dlhandle)
{
CleanupFunc cleanupFunc;
if ((cleanupFunc = (CleanupFunc)ap_os_dso_sym(dlhandle, ECSCleanUp))) {
(*cleanupFunc)();
}
ap_os_dso_unload(dlhandle);
#ifdef ECS_DEBUG
fprintf(stderr, "Unloading handle %d", dlhandle);
#endif
}
static void unload_module(moduleinfo *modi)
{
/* only unload if module information is still existing */
if (modi->modp == NULL)
return;
/* remove the module pointer from the core structure */
ap_remove_loaded_module(modi->modp);
/* unload the module space itself */
ap_os_dso_unload((ap_os_dso_handle_t)modi->modp->dynamic_load_handle);
/* destroy the module information */
modi->modp = NULL;
modi->name = NULL;
}
int isapi_handler (request_rec *r) {
LPEXTENSION_CONTROL_BLOCK ecb =
ap_pcalloc(r->pool, sizeof(struct _EXTENSION_CONTROL_BLOCK));
HSE_VERSION_INFO *pVer = ap_pcalloc(r->pool, sizeof(HSE_VERSION_INFO));
HINSTANCE isapi_handle;
BOOL (*isapi_version)(HSE_VERSION_INFO *); /* entry point 1 */
DWORD (*isapi_entry)(LPEXTENSION_CONTROL_BLOCK); /* entry point 2 */
BOOL (*isapi_term)(DWORD); /* optional entry point 3 */
isapi_cid *cid = ap_pcalloc(r->pool, sizeof(isapi_cid));
table *e = r->subprocess_env;
DWORD read;
char *p;
int retval;
int res;
/* Use similar restrictions as CGIs */
if (!(ap_allow_options(r) & OPT_EXECCGI))
return FORBIDDEN;
if (r->finfo.st_mode == 0)
return NOT_FOUND;
if (S_ISDIR(r->finfo.st_mode))
return FORBIDDEN;
if (!(isapi_handle = ap_os_dso_load(r->filename))) {
ap_log_rerror(APLOG_MARK, APLOG_ALERT, r,
"ISAPI Could not load DLL: %s", r->filename);
return SERVER_ERROR;
}
if (!(isapi_version =
(void *)(ap_os_dso_sym(isapi_handle, "GetExtensionVersion")))) {
ap_log_rerror(APLOG_MARK, APLOG_ALERT, r,
"DLL could not load GetExtensionVersion(): %s",
r->filename);
ap_os_dso_unload(isapi_handle);
return SERVER_ERROR;
}
if (!(isapi_entry =
(void *)(ap_os_dso_sym(isapi_handle, "HttpExtensionProc")))) {
ap_log_rerror(APLOG_MARK, APLOG_ALERT, r,
"DLL could not load HttpExtensionProc(): %s",
r->filename);
ap_os_dso_unload(isapi_handle);
return SERVER_ERROR;
}
isapi_term = (void *)(ap_os_dso_sym(isapi_handle, "TerminateExtension"));
/* Run GetExtensionVersion() */
if (!(*isapi_version)(pVer)) {
ap_log_rerror(APLOG_MARK, APLOG_ALERT, r,
"ISAPI GetExtensionVersion() failed: %s", r->filename);
ap_os_dso_unload(isapi_handle);
return SERVER_ERROR;
}
/* Set up variables. There are a couple of special cases for ISAPI.
* XXX: These were taken verbatim from GetServerVariable, and should
* be reviewed carefully.
*/
ap_add_common_vars(r);
ap_add_cgi_vars(r);
ap_table_setn(r->subprocess_env, "UNMAPPED_REMOTE_USER", "REMOTE_USER");
ap_table_setn(r->subprocess_env, "SERVER_PORT_SECURE", "0");
ap_table_setn(r->subprocess_env, "URL", r->uri);
/* Set up connection ID */
ecb->ConnID = (HCONN)cid;
cid->ecb = ecb;
cid->r = r;
cid->status = 0;
ecb->cbSize = sizeof(struct _EXTENSION_CONTROL_BLOCK);
ecb->dwVersion = MAKELONG(0, 2);
ecb->dwHttpStatusCode = 0;
strcpy(ecb->lpszLogData, "");
ecb->lpszMethod = ap_pstrdup(r->pool, r->method);
ecb->lpszQueryString = ap_pstrdup(r->pool, ap_table_get(e, "QUERY_STRING"));
ecb->lpszPathInfo = ap_pstrdup(r->pool, ap_table_get(e, "PATH_INFO"));
ecb->lpszPathTranslated = ap_pstrdup(r->pool, ap_table_get(e, "PATH_TRANSLATED"));
ecb->lpszContentType = ap_pstrdup(r->pool, ap_table_get(e, "CONTENT_TYPE"));
/* Set up client input */
if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))) {
if (isapi_term) (*isapi_term)( 2 /* HSE_TERM_MUST_UNLOAD */);
ap_os_dso_unload(isapi_handle);
return retval;
}
if (ap_should_client_block(r)) {
/* Time to start reading the appropriate amount of data,
* and allow the administrator to tweak the number
* TODO: add the httpd.conf option for ReadAheadBuffer.
*/
if (r->remaining) {
ecb->cbTotalBytes = r->remaining;
if (ecb->cbTotalBytes > ReadAheadBuffer)
ecb->cbAvailable = ReadAheadBuffer;
else
ecb->cbAvailable = ecb->cbTotalBytes;
}
else
{
ecb->cbTotalBytes = 0xffffffff;
ecb->cbAvailable = ReadAheadBuffer;
}
ecb->lpbData = ap_pcalloc(r->pool, ecb->cbAvailable + 1);
p = ecb->lpbData;
read = 0;
while (read < ecb->cbAvailable &&
((res = ap_get_client_block(r, ecb->lpbData + read,
ecb->cbAvailable - read)) > 0)) {
read += res;
}
if (res < 0) {
if (isapi_term) (*isapi_term)(HSE_TERM_MUST_UNLOAD);
ap_os_dso_unload(isapi_handle);
return SERVER_ERROR;
}
/* Although its not to spec, IIS seems to null-terminate
* its lpdData string. So we will too.
*
* XXX: This must be an issue... backing out the null
* from the count of bytes.
*/
if (res == 0)
ecb->cbAvailable = ecb->cbTotalBytes = read;
else
ecb->cbAvailable = read;
ecb->lpbData[read] = '\0';
}
else {
ecb->cbTotalBytes = 0;
ecb->cbAvailable = 0;
ecb->lpbData = NULL;
}
/* Set up the callbacks */
ecb->GetServerVariable = &GetServerVariable;
ecb->WriteClient = &WriteClient;
ecb->ReadClient = &ReadClient;
ecb->ServerSupportFunction = &ServerSupportFunction;
/* All right... try and load the sucker */
retval = (*isapi_entry)(ecb);
/* Set the status (for logging) */
if (ecb->dwHttpStatusCode)
r->status = ecb->dwHttpStatusCode;
/* Check for a log message - and log it */
if (ecb->lpszLogData && strcmp(ecb->lpszLogData, ""))
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, r,
"ISAPI: %s: %s", ecb->lpszLogData, r->filename);
/* Soak up any remaining input */
if (r->remaining > 0) {
char argsbuffer[HUGE_STRING_LEN];
while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0);
}
/* All done with the DLL... get rid of it */
if (isapi_term) (*isapi_term)(HSE_TERM_MUST_UNLOAD);
ap_os_dso_unload(isapi_handle);
switch(retval) {
case 0: /* Strange, but MS isapi accepts this as success */
case HSE_STATUS_SUCCESS:
case HSE_STATUS_SUCCESS_AND_KEEP_CONN:
/* Ignore the keepalive stuff; Apache handles it just fine without
* the ISA's "advice".
*/
if (cid->status) /* We have a special status to return */
return cid->status;
return OK;
case HSE_STATUS_PENDING: /* We don't support this */
if (LogNotSupported)
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, r,
"ISAPI asynchronous I/O not supported: %s",
r->filename);
case HSE_STATUS_ERROR:
default:
return SERVER_ERROR;
}
}
static void unload_file(void *handle)
{
ap_os_dso_unload((ap_os_dso_handle_t)handle);
}
