HTTPResponse *resp_getResponseHeaders(WOConnection *instanceConnection, WOInstanceHandle instHandle)
{
HTTPResponse *resp;
String *response;
/*
* get the status
*/
response = transport->recvline(instanceConnection->fd);
if (!response)
return NULL;
WOLog(WO_INFO,"New response: %s", response->text);
resp = resp_new(response->text, instHandle, instanceConnection);
str_free(response);
if (resp == NULL)
return NULL;
/*
* followed by the headers...
*/
while ((response = transport->recvline(instanceConnection->fd)) != NULL) {
if (response->length == 0)
break;
WOLog(WO_DBG,"Header read: %s", response->text); // mstoll 13.10.2005 debug output added
resp_addHeader(resp, response);
}
if((resp->flags & RESP_LENGTH_EXPLICIT) != RESP_LENGTH_EXPLICIT)
{
if((resp->flags & RESP_CONTENT_TYPE_SET) != RESP_CONTENT_TYPE_SET)
{
// no content type: no body, so content-length is implicit 0
resp->content_length = 0;
} else {
// 2009/06/10: no content-length defined. To be able to process the
// request although, we set the maximum allowed value and close
// the client socket communication if the end-of-response-
// stream was reached. The maximum allowed value is UINT_MAX,
// because resp->content_length is defined as "unsigned".
// But the function used to convert a content-length string
// returns an int and assignments like
// int value = resp->content_length;
// can be found in the adaptor source code. Therefore, we
// should better use INT_MAX!
resp->content_length = INT_MAX;
WOLog(WO_WARN, "Response doesn't specify a content-length: assuming %u bytes!",
resp->content_length);
}
}
if (response)
str_free(response);
else {
/* recvline() must have failed */
resp_free(resp);
WOLog(WO_ERR, "Error receiving headers - response dropped");
return NULL;
}
return resp;
}
/*
* run the request
*/
static HTTPResponse *_runRequest(WOAppReq *app, WOAppHandle woappHandle, WOInstanceHandle instHandle, HTTPRequest *req) {
WOConnection *c;
HTTPResponse *resp = NULL;
int send_status, keepConnection, retryRequest = 0;
const char *idString = NULL;
WOLog(WO_INFO,"Trying to contact %s:%s on %s(%d)", app->name,app->instance,app->host,app->port);
/* Tag the request with a unique identifier (if it hasn't been already) */
/* (It might already have been tagged if we are retrying the request due to refusing new sessions, for example) */
idString = req_HeaderForKey(req, REQUEST_ID_HEADER);
if (idString == NULL)
{
String *requestID = tr_uniqueID();
if (requestID)
{
req_addHeader(req, REQUEST_ID_HEADER, requestID->text, STR_COPYVALUE);
idString = req_HeaderForKey(req, REQUEST_ID_HEADER);
str_free(requestID);
}
}
do {
c = tr_open(instHandle); /* connect */
if (c == NULL) {
WOLog(WO_INFO,"%s:%s NOT LISTENING on %s(%d)", app->name,app->instance,app->host,app->port);
app->error = err_connect;
return NULL;
}
/*
* app found and is listening on port
*/
if (app->scheduler->beginTransaction)
app->scheduler->beginTransaction(app, instHandle);
/* Make sure that we're the only connection header, and we're explicit about the setting */
req_removeHeader(req,CONNECTION);
if (c->isPooled) {
req_addHeader(req,CONNECTION,HTTP_KEEP_ALIVE,0);
} else {
req_addHeader(req,CONNECTION,HTTP_CLOSE,0);
}
WOLog(WO_INFO,"%s:%s on %s(%d) connected [pooled: %s]", app->name, app->instance, app->host, app->port, c->isPooled ? "Yes" : "No");
/*
* send the request....
*/
send_status = req_sendRequest(req, c->fd);
if (send_status != 0) {
if ((send_status == TR_RESET) && (retryRequest == 0) && !req->haveReadStreamedData) {
/* If we get here the connection was reset. This means the instance has either quit or crashed. */
/* Bump the generation number so all pooled connections to this instance will be invalidated. */
/* Then retry the request with a new connection. If the instance is not running the retry will */
/* fail with a different error and the instance will be marked dead. */
_WOInstance *inst = ac_lockInstance(instHandle);
/* note: if we get here, keepConnection == 0 --> this connection will be closed */
if (inst)
{
ac_cycleInstance(inst, c->generation);
ac_unlockInstance(instHandle);
}
retryRequest++;
WOLog(WO_INFO, "retrying request due to connection reset");
/* Must close connection before continuing */
tr_close(c, instHandle, 0);
continue;
} else {
WOLog(WO_ERR,"Failed to send request");
tr_close(c, instHandle, 0); /* close app connection */
if (send_status == -1)
app->error = err_read;
else
app->error = err_send;
return NULL;
}
}
/* Note that we have a request queued */
WOLog(WO_INFO,"Request %s sent, awaiting response", req->request_str);
/* While the app is processing the request, take the opportunity to check/update the config. */
ac_readConfiguration();
/*
* now wait for the response...
*/
resp = resp_getResponseHeaders(c, instHandle);
/* go ahead and read the first chunk of response data */
if (resp && req->method != HTTP_HEAD_METHOD)
{
if (resp_getResponseContent(resp, 1) == -1)
{
resp_free(resp);
resp = NULL;
}
}
/* Validate the ID */
if (idString && resp)
{
const char *respID = st_valueFor(resp->headers, REQUEST_ID_HEADER);
if (respID != NULL)
{
if (strcmp(respID, idString) != 0)
{
WOLog(WO_ERR, "Got response with wrong ID! Dumping response. request ID = %s, response ID = %s", idString, respID);
/* note this will cause the connection to be closed below */
resp_free(resp);
resp = NULL;
} else
st_removeKey(resp->headers, REQUEST_ID_HEADER);
} else
WOLog(WO_WARN, "Got response with no ID.");
}
app->response = resp;
/*
* check if this connection can be kept open
*/
keepConnection = 0;
#ifndef CGI /* doesn't make sense to keep the connection for CGI */
if (resp && resp->headers)
{
const char *keepAlive;
keepAlive = st_valueFor(resp->headers, CONNECTION);
if (keepAlive)
{
/* if the keep alive header is set, honor the value */
if (strcasecmp(keepAlive, HTTP_KEEP_ALIVE) == 0)
keepConnection = 1;
} else {
/* no keep alive header - keep alive by default for HTTP/1.1 only */
if (resp->flags & RESP_HTTP11)
keepConnection = 1;
}
}
#endif
if (resp != NULL) {
if (app->scheduler->finalizeTransaction)
if (app->scheduler->finalizeTransaction(app, instHandle))
keepConnection = 0;
st_removeKey(resp->headers, REFUSING_SESSIONS_HEADER);
st_removeKey(resp->headers, LOAD_AVERAGE_HEADER);
st_removeKey(resp->headers, CONNECTION);
WOLog(WO_INFO,"received ->%d %s",resp->status,resp->statusMsg);
retryRequest = 0;
} else {
if (c != NULL && tr_connectionWasReset(c))
{
/* If we get here the connection was reset. This means the instance has either quit or crashed. */
/* Bump the generation number so all pooled connections to this instance will be invalidated. */
/* Then retry the request with a new connection. If the instance is not running the retry will */
/* fail with a different error and the instance will be marked dead. */
/* Note that only one retry due to a connection reset error is allowed. This is to prevent an */
/* infinite loop if the instance dies while processing the request and restarts quickly enough */
/* to process the retry. */
_WOInstance *inst = ac_lockInstance(instHandle);
/* note: if we get here, keepConnection == 0 --> this connection will be closed */
if (inst)
{
ac_cycleInstance(inst, c->generation);
ac_unlockInstance(instHandle);
}
retryRequest++;
if (retryRequest == 1)
WOLog(WO_INFO, "retrying request due to connection reset");
} else
app->error = err_response;
}
if (resp && resp->content_read < resp->content_length)
{
resp->keepConnection = keepConnection;
resp->instHandle = instHandle;
resp->flags |= RESP_CLOSE_CONNECTION;
} else {
tr_close(c, instHandle, keepConnection);
}
} while (retryRequest == 1);
return resp;
}
/*
* Handle the meat of the request:
* - check for a load balanced instance
* - (or) autostart an (or find an autostarted) instance
* - open a socket to the application
* - message the application with the request using HTTP
* - wait for and receive the response
* - free the request
* - return the response
*
* If we can't message the application, retry the request up to
* RETRIES times (see config.h).
*
*/
HTTPResponse *tr_handleRequest(HTTPRequest *req, const char *url, WOURLComponents *wc, const char *server_protocol, const char *docroot)
{
WOAppReq app;
int connectionAttempts = 0, searchAttempts = 0;
HTTPResponse *resp = NULL;
WOAppHandle appHandle = AC_INVALID_HANDLE;
_WOApp *woapp = NULL;
WOInstanceHandle instHandle = AC_INVALID_HANDLE, retryInstHandle;
_WOInstance *inst;
int urlVersion, retries = RETRIES;
memset(&app, 0, sizeof(WOAppReq));
app.urlVersion = CURRENT_WOF_VERSION_MAJOR;
app.docroot = docroot;
app.request = req; /* valid for request forwarding phase */
/*
* copy the application name
*/
if (wc->applicationName.length != 0 && wc->applicationName.length < WA_MAX_APP_NAME_LENGTH) {
strncpy(app.name, wc->applicationName.start, wc->applicationName.length);
app.name[wc->applicationName.length] = '\0';
}
/*
* find the application
*/
for (searchAttempts = 0; searchAttempts < 2 && instHandle == AC_INVALID_HANDLE; searchAttempts++)
{
/* If the find app succeeds, have to be very careful about the possibility */
/* that someone else can delete it out from under us. */
appHandle = ac_findApplication(app.name);
if (appHandle != AC_INVALID_HANDLE)
{
/* cache some info so we don't have to keep the app locked */
woapp = ac_lockedApp(appHandle);
urlVersion = woapp->urlVersion;
app.scheduler = lb_schedulerByName(woapp->loadbalance);
strncpy(app.redirect_url, woapp->redirect_url, WA_MAX_URL_LENGTH);
retries = woapp->retries;
/* extract the request & application information from the URI */
resp = _collectRequestInformation(&app, wc, url, urlVersion, req);
if (resp != NULL) {
ac_unlockApp(appHandle);
return resp; /* some kind of error in URI */
}
/* note: if we found the app, it is still locked at this point */
/*
* select an app, the request may be requesting a specific instance
* or it may be indifferent. an instance neutral request may be a new
* request or a returning one for which the state is not stored in the
* app.
* if specified instance does not respond, we'll failover to another
* instance
*/
if (app.instance[0] == 0) {
instHandle = tr_selectInstance(&app, woapp);
if (instHandle != AC_INVALID_HANDLE)
{
WOLog(WO_INFO,"Selected new app instance at index %d", instHandle);
tr_prepareToUseInstance(&app, instHandle);
ac_unlockInstance(instHandle);
}
} else {
WOLog(WO_INFO,"Selecting specific app instance %s.", app.instance);
instHandle = ac_findInstance(woapp, app.instance);
if (instHandle == AC_INVALID_HANDLE)
{
WOLog(WO_WARN, "Unable to find instance %s. Attempting to select another.", app.instance);
instHandle = tr_selectInstance(&app, woapp);
}
if (instHandle != AC_INVALID_HANDLE)
{
tr_prepareToUseInstance(&app, instHandle);
ac_unlockInstance(instHandle);
}
}
/* At this point, pendingResponses has been incremented in the instance. */
/* An instance will not be deleted with a nonzero pendingResponses coung, and */
/* an app will not be deleted if it has any instances. Now it is ok to unlock the app. */
ac_unlockApp(appHandle);
}
/* If we didn't find the app or if we didn't find a specific requested instance, reload the config */
if (searchAttempts == 0 && (appHandle == AC_INVALID_HANDLE || (instHandle == AC_INVALID_HANDLE && app.instance[0] == '-')))
{
if (app.instance[0] != 0)
WOLog(WO_INFO, "Requested application '%s' not found. Reloading config.", app.name);
else
WOLog(WO_INFO, "Specific instance %s:%s not found. Reloading config.", app.name, app.instance);
ac_resetConfigTimers();
ac_readConfiguration();
} else {
/* didn't reload the config, so no point in retrying */
break;
}
}
/*
* run the request...
*/
resp = NULL;
if (instHandle != AC_INVALID_HANDLE) {
/* Attempt to send request and read response */
do {
/* Fix up URL so app knows it's being load balanced ... */
/* We need to do this in the loop to get correct instance number into the request URL */
req_reformatRequest(req, &app, wc, server_protocol);
WOLog(WO_INFO,"Sending request to instance number %s, port %d", app.instance, app.port);
resp = _runRequest(&app, appHandle, instHandle, req);
/* Cannot retry if we have read some streamed content data because we cannot unwind the byte stream. */
if (req->haveReadStreamedData)
retries = 0;
if (resp) {
if (resp->status == 302) /* redirected */
{
if (!req->haveReadStreamedData && st_valueFor(resp->headers, "x-webobjects-refusing-redirection"))
{
/* redirected because instance is refusing new sessions */
resp_free(resp);
resp = NULL;
WOLog(WO_INFO, "Request redirected because instance refusing new sessions.");
}
}
} else {
if (app.error != err_read)
{
connectionAttempts++;
/* Mark this instance as unresponsive */
WOLog(WO_INFO,"Marking instance %s dead", app.instance);
if (app.scheduler->instanceDidNotRespond)
{
inst = ac_lockInstance(instHandle);
if (inst)
{
app.scheduler->instanceDidNotRespond(inst);
ac_unlockInstance(instHandle);
}
}
WOLog(WO_DBG, "connectionAttempts = %d, retries = %d", connectionAttempts, retries);
ac_readConfiguration();
}
}
if (resp == NULL && connectionAttempts <= retries) {
/* appHandle is still valid because we have not decremented pendingResponses on the instance */
woapp = ac_lockApp(appHandle);
if (woapp)
{
retryInstHandle = tr_selectInstance(&app, woapp);
if (retryInstHandle != AC_INVALID_HANDLE)
{
tr_prepareToUseInstance(&app, retryInstHandle);
ac_unlockInstance(retryInstHandle);
}
ac_unlockApp(appHandle);
} else
retryInstHandle = AC_INVALID_HANDLE;
/* Decrement pendingResponses on the original instance. It is safe to do now. */
/* The retry instance has had pendingResponses incremented, which will prevent the */
/* app from being removed. (Or, there was not other instance to retry, and we are done.) */
inst = ac_lockInstance(instHandle);
if (inst)
{
if (inst->pendingResponses > 0)
inst->pendingResponses--;
ac_unlockInstance(instHandle);
instHandle = retryInstHandle;
}
if (retryInstHandle != AC_INVALID_HANDLE) {
WOLog(WO_INFO,"Attempting failover to new instance at index %d", retryInstHandle);
} else {
WOLog(WO_INFO,"No new instance located for failover");
}
instHandle = retryInstHandle;
}
} while (resp == NULL && instHandle != AC_INVALID_HANDLE && connectionAttempts < retries);
if (instHandle != AC_INVALID_HANDLE)
{
/* still have to decrement pendingResponses */
inst = ac_lockInstance(instHandle);
if (inst)
{
if (inst->pendingResponses > 0)
inst->pendingResponses--;
ac_unlockInstance(instHandle);
/* At this point, the app could be removed from the config at any time. */
instHandle = retryInstHandle;
}
}
} else {
if (ac_authorizeAppListing(wc))
resp = WOAdaptorInfo(req, wc);
else
app.error = err_notFound;
}
/*
* how'd we do?
*/
if (resp == NULL) {
/*
* we may be able to send a palatable response...
*/
resp = _errorResponse(&app, wc, req);
}
return resp;
}
/*
* the thing that gets called...
*/
__declspec(dllexport) DWORD __stdcall HttpExtensionProc(EXTENSION_CONTROL_BLOCK *p)
{
HTTPRequest *req;
HTTPResponse *resp = NULL;
WOURLComponents wc = WOURLComponents_Initializer;
const char *reqerr;
const char *qs;
char *script_name;
char *server_protocol;
char *uri;
WOURLError urlerr;
if (!adaptorEnabled)
{
WOLog(WO_ERR, "WebObjects adaptor disabled.");
return HSE_STATUS_ERROR;
}
// Deactivate IIS 7.x stream buffering
// IIS 7.x (and above?) behaves differently from IIS 6 by introducing
// output buffering ISAPI Extension output
// This could cause interrupted and hence incomplete streaming output
// This change does deactivate the output buffering in IIS 7.x
// (see http://support.microsoft.com/kb/946086) and does not harm
// when called within IIS 6
//
p->ServerSupportFunction (p->ConnID,
HSE_REQ_SET_FLUSH_FLAG,
(LPVOID) TRUE,
NULL,
NULL
);
/*
* extract WebObjects request components from URI
*/
script_name = getHeader(p, CGI_SCRIPT_NAME);
uri = WOMALLOC(strlen(p->lpszPathInfo) + strlen(script_name) + 1);
strcpy(uri, script_name);
strcat(uri, p->lpszPathInfo);
WOLog(WO_INFO,"<WebObjects ISAPI> new request: %s", uri);
WOFREE(script_name);
urlerr = WOParseApplicationName(&wc, uri);
if (urlerr != WOURLOK) {
const char *_urlerr;
_urlerr = WOURLstrerror(urlerr);
WOLog(WO_INFO,"URL Parsing Error: %s", _urlerr);
if (urlerr == WOURLInvalidApplicationName) {
if (ac_authorizeAppListing(&wc)) {
resp = WOAdaptorInfo(NULL, &wc);
WOFREE(uri); /* this has to be freed before a return in this function */
return die_resp(p, resp);
} else {
WOFREE(uri); /* this has to be freed before a return in this function */
return die(p, _urlerr, HTTP_NOT_FOUND);
}
}
WOFREE(uri); /* this has to be freed before a return in this function */
return die(p, _urlerr, HTTP_BAD_REQUEST);
}
/*
* build the request...
*/
req = req_new(p->lpszMethod, NULL);
req->api_handle = p;
/*
* get the headers....
*/
copyHeaders(p, req);
/*
* validate the method
*/
reqerr = req_validateMethod(req);
if (reqerr) {
req_free(req);
WOFREE(uri); /* this has to be freed before a return in this function */
return die(p,reqerr, HTTP_BAD_REQUEST);
}
/*
* get form data if any
* assume that POSTs with content length will be reformatted to GETs later
*/
req->content_length = p->cbTotalBytes;
if (req->content_length > 0)
{
req_allocateContent(req, req->content_length, 1);
req->getMoreContent = (req_getMoreContentCallback)readContentData;
req->total_len_read = 0;
if (req->content_buffer_size == 0)
{
WOFREE(uri); /* this has to be freed before a return in this function */
req_free(req);
return die(p, ALLOCATION_FAILURE, HTTP_SERVER_ERROR);
}
if (readContentData(req, req->content, req->content_buffer_size, 1) == -1) {
WOFREE(uri); /* this has to be freed before a return in this function */
req_free(req);
return die(p, WOURLstrerror(WOURLInvalidPostData), HTTP_BAD_REQUEST);
}
}
/* Always get the query string */
qs = p->lpszQueryString;
wc.queryString.start = qs;
wc.queryString.length = qs ? strlen(qs) : 0;
/*
* message the application & collect the response
*
* note that handleRequest free()'s the 'req' for us
*/
if (resp == NULL) {
/* if no error so far... */
server_protocol = getHeader(p, CGI_SERVER_PROTOCOL);
resp = tr_handleRequest(req, uri, &wc, server_protocol, NULL);
WOFREE(server_protocol);
}
if (resp != NULL) {
sendResponse(p, resp);
resp_free(resp);
}
WOFREE(uri); /* this has to be freed before a return in this function */
req_free(req);
#if defined(FINDLEAKS)
showleaks();
#endif
return HSE_STATUS_SUCCESS;
}
static DWORD die_resp(EXTENSION_CONTROL_BLOCK *p, HTTPResponse *resp)
{
sendResponse(p, resp);
resp_free(resp);
return HSE_STATUS_SUCCESS;
}
int main() {
#ifdef PROFILE
int i;
#endif
const char *config_url, *username, *password, *config_options;
strtbl *options = NULL;
int exit_status = 0;
// install SIGUSR1, SIGPIPE, SIGTERM handler
signal(SIGTERM, sig_handler);
signal(SIGUSR1, sig_handler);
signal(SIGPIPE, sig_handler);
/* Provide a hook via an environment variable to define the config URL */
config_url = getenv(WO_CONFIG_URL);
if (!config_url) {
/* Flat file URL */
/* config_url = "file:///Local/Library/WebObjects/Configuration/WOConfig.xml"; */
/* Local wotaskd */
/* config_url = "http://localhost:1085"; */
/* Multicast URL */
config_url = CONFIG_URL; /* Actually "webobjects://239.128.14.2:1085"; */
}
WOLog(WO_INFO,"<FastCGI> config url is %s", config_url);
options = st_new(8);
st_add(options, WOCONFIG, config_url, 0);
/*
* If your webserver is configured to pass these environment variables, we use them to
* protect WOAdaptorInfo output.
*/
username = getenv(WO_ADAPTOR_INFO_USERNAME);
if (username && strlen(username) != 0) {
st_add(options, WOUSERNAME, username, 0);
password = getenv(WO_ADAPTOR_INFO_PASSWORD);
if(password && strlen(password) != 0) {
st_add(options, WOPASSWORD, password, 0);
}
}
config_options = getenv(WO_CONFIG_OPTIONS);
if (config_options)
st_add(options, WOOPTIONS, config_options, 0);
/*
* SECURITY ALERT
*
* To disable WOAdaptorInfo, uncomment the next line.
* st_add(options, WOUSERNAME, "disabled", 0);
*
* To specify an WOAdaptorInfo username and password, uncomment the next two lines.
* st_add(options, WOUSERNAME, "joe", 0);
* st_add(options, WOPASSWORD, "secret", 0);
*
*/
if (init_adaptor(options)) {
WOLog( WO_ERR, "<FastCGI> Adaptor initialization failed.");
exit(-1);
}
WOLog( WO_INFO,"<FastCGI> process started" );
while (!should_terminate) {
HTTPRequest *req;
HTTPResponse *resp = NULL;
WOURLComponents wc = WOURLComponents_Initializer;
const char *qs;
unsigned int qs_len;
char *url;
const char *script_name, *path_info;
const char *reqerr;
WOURLError urlerr;
FCGX_ParamArray hdrp_org;
exit_status = FCGX_Accept(&in, &out, &err, &hdrp );
if ( exit_status < 0 ) {
break;
}
#ifdef PROFILE
for (i=0; i < 50000; i++) {
#endif
WOLog( WO_INFO,"<FastCGI> request accepted" );
#ifdef WIN32
_setmode(_fileno(stdout), _O_BINARY);
_setmode(_fileno(stdin), _O_BINAR1Y);
#endif
script_name = FCGX_GetParam( CGI_SCRIPT_NAME, hdrp);
path_info = FCGX_GetParam( CGI_PATH_INFO, hdrp);
WOLog( WO_INFO,"<FastCGI> CGI_SCRIPT_NAME = %s", script_name );
WOLog( WO_INFO,"<FastCGI> CGI_PATH_INFO = %s", path_info );
if (script_name == NULL) {
prepareAndSendErrorResponse(INV_SCRIPT, HTTP_NOT_FOUND);
break;
} else if (path_info == NULL) {
path_info = "/";
}
/*
* extract WebObjects application name from URI
*/
url = WOMALLOC(strlen(path_info) + strlen(script_name) + 1);
strcpy(url, script_name);
strcat(url, path_info);
WOLog(WO_INFO,"<FastCGI> new request: %s",url);
urlerr = WOParseApplicationName(&wc, url);
if (urlerr != WOURLOK) {
const char *_urlerr;
_urlerr = WOURLstrerror(urlerr);
WOLog(WO_INFO,"<FastCGI> URL Parsing Error: %s", _urlerr);
if (urlerr == WOURLInvalidApplicationName) {
if (ac_authorizeAppListing(&wc)) {
resp = WOAdaptorInfo(NULL, &wc);
sendErrorResponse(resp);
} else {
prepareAndSendErrorResponse(_urlerr, HTTP_NOT_FOUND);
}
WOFREE(url);
break;
}
prepareAndSendErrorResponse(_urlerr, HTTP_BAD_REQUEST);
WOFREE(url);
break;
}
/*
* build the request...
*/
req = req_new( FCGX_GetParam("REQUEST_METHOD", hdrp), NULL);
/*
* validate the method
*/
reqerr = req_validateMethod(req);
if (reqerr) {
prepareAndSendErrorResponse(reqerr, HTTP_BAD_REQUEST);
WOFREE(url);
break;
}
/*
* copy the headers. This looks wierd... all we're doing is copying
* *every* environment variable into our headers. It may be beyond
* the spec, but more information probably won't hurt.
*/
hdrp_org=hdrp;
while (hdrp && *hdrp) {
char *key, *value;
/* copy env. line. */
key = WOSTRDUP(*hdrp);
for (value = key; *value && !isspace((int)*value) && (*value != '='); value++) {}
if (*value) {
*value++ = '\0'; /* null terminate 'key' */
}
while (*value && (isspace((int)*value) || (*value == '='))) {
value++;
}
/* BEGIN Support for getting the client's certificate. */
if (strcmp((const char *)key, "SSL_CLIENT_CERTIFICATE") == 0 || strcmp((const char *)key, "SSL_SERVER_CERTIFICATE") == 0 ) {
value = 0;
WOLog(WO_INFO,"<FastCGI> DROPPING ENV VAR (DUPLICATE) = %s", key);
}
if (strcmp((const char *)key, "SSL_CLIENT_CERT") == 0 || strcmp((const char *)key, "SSL_SERVER_CERT") == 0) {
value = make_cert_one_line(value);
//WOLog(WO_INFO,"<FastCGI> PASSING %s = %s", key, value);
}
/* END Support for getting the client's certificate */
if (key && *key && value && *value) {
/* must specify copy key and value because key translation might replace this key, and value lives in the same buffer */
req_addHeader(req, key, value, STR_COPYKEY|STR_COPYVALUE);
}
/* BEGIN Support for getting the client's certificate */
if (freeValueNeeded ) {
free(value);
freeValueNeeded=0;
}
/* END Support for getting the client's certificate */
WOFREE(key);
hdrp++; /* next env variable */
}
hdrp=hdrp_org;
/*
* get form data if any
* assume that POSTs with content length will be reformatted to GETs later
*/
WOLog ( WO_INFO, "Getting request data, length: %d",req->content_length );
if (req->content_length > 0) {
req_allocateContent(req, req->content_length, 1);
req->getMoreContent = (req_getMoreContentCallback)readContentData;
WOLog ( WO_INFO, "content_buffer_size: %d",req->content_buffer_size );
if (req->content_buffer_size == 0) {
prepareAndSendErrorResponse(ALLOCATION_FAILURE, HTTP_SERVER_ERROR);
WOFREE(url);
break;
}
if (readContentData(req, req->content, req->content_buffer_size, 1) == -1) {
prepareAndSendErrorResponse(WOURLstrerror(WOURLInvalidPostData), HTTP_BAD_REQUEST);
WOFREE(url);
break;
}
}
/* Always get the query string */
qs = FCGX_GetParam("QUERY_STRING", hdrp);
if (qs) {
qs_len = strlen(qs);
} else {
qs_len = 0;
}
if (qs_len > 0) {
wc.queryString.start = qs;
wc.queryString.length = qs_len;
WOLog(WO_INFO,"<FastCGI> new request with Query String: %s", qs);
}
/*
* message the application & collect the response
*/
resp = tr_handleRequest(req, url, &wc, FCGX_GetParam(CGI_SERVER_PROTOCOL, hdrp), documentRoot());
if (resp != NULL) {
sendResponse(resp);
resp_free(resp); /* dump the response */
}
WOFREE(url);
req_free(req);
#if defined(FINDLEAKS)
showleaks();
#endif
}
#ifdef PROFILE
}
#endif
st_free(options);
WOLog( WO_INFO,"<FastCGI> process exiting" );
return exit_status;
}
static void sendErrorResponse(HTTPResponse *resp)
{
sendResponse(resp);
resp_free(resp);
}
/*
* the request handler...
*/
NSAPI_PUBLIC
int WebObjectsRequest(pblock *pb, Session *sn, Request *rq)
{
HTTPRequest *req;
HTTPResponse *resp = NULL;
WOURLComponents wc = WOURLComponents_Initializer;
const char *reqerr;
const char *qs;
int retval;
char *uri;
WOURLError urlerr;
if (!adaptorEnabled)
return REQ_NOACTION;
/* spew debug info */
dump_pb(sn->client,"service.sn->client");
dump_pb(pb,"service.pb");
dump_pb(rq->vars,"service.rq->vars");
dump_pb(rq->reqpb,"service.rq->reqpb");
dump_pb(rq->headers,"service.rq->headers");
dump_pb(rq->srvhdrs,"service.rq->srvhdrs");
uri = pblock_findval("uri", rq->reqpb);
WOLog(WO_INFO,"<WebObjects NSAPI> new request: %s", uri);
urlerr = WOParseApplicationName(&wc, uri);
if (urlerr != WOURLOK) {
const char *_urlerr;
_urlerr = WOURLstrerror(urlerr);
WOLog(WO_INFO,"URL Parsing Error: %s", _urlerr);
if (urlerr == WOURLInvalidApplicationName) {
if (ac_authorizeAppListing(&wc)) {
resp = WOAdaptorInfo(NULL, &wc);
die_resp(sn, rq, resp);
} else {
die(sn, rq, _urlerr, HTTP_NOT_FOUND);
}
}
die(sn, rq, _urlerr, HTTP_BAD_REQUEST);
}
/*
* build the request ....
*/
req = req_new( pblock_findval("method", rq->reqpb), NULL);
/*
* validate the method
*/
reqerr = req_validateMethod(req);
if (reqerr) {
req_free(req);
return die(sn,rq,reqerr, HTTP_BAD_REQUEST);
}
/*
* copy the headers..
*/
copyHeaders(pb, sn, rq, req);
/*
* get form data if any
* assume that POSTs with content length will be reformatted to GETs later
*/
if (req->content_length > 0)
{
int len_remaining = req->content_length;
char *buffer = WOMALLOC(req->content_length);
char *data = buffer;
int c;
while (len_remaining-- > 0) {
if ((c = netbuf_getc(sn->inbuf)) == IO_ERROR) {
log_error(0,"WebObjects",sn,rq,"Error reading form data");
WOFREE(buffer);
req_free(req);
return die(sn,rq,INV_FORM_DATA, HTTP_BAD_REQUEST);
}
*data++ = c;
}
req->content = buffer;
}
/* Always get the query string */
qs = pblock_findval("query", rq->reqpb);
wc.queryString.start = qs;
wc.queryString.length = qs ? strlen(qs) : 0;
/*
* message the application & collect the response
*
* note that handleRequest free()'s the 'req' for us
*/
if (resp == NULL) {
/* if no error so far... */
req->api_handle = rq; /* stash this in case it's needed */
resp = tr_handleRequest(req, uri, &wc, pblock_findval("protocol",rq->reqpb), NULL);
}
if (resp != NULL) {
retval = sendResponse(sn, rq, resp);
resp_free(resp);
} else {
retval = REQ_EXIT; /* no response from app - bail */
}
req_free(req);
#if defined(FINDLEAKS)
showleaks();
#endif
return retval;
}
static int die_resp(Session *sn, Request *rq, HTTPResponse *resp)
{
sendResponse(sn, rq, resp);
resp_free(resp);
return REQ_PROCEED;
}
/*
* the thing that gets called...
*/
__declspec(dllexport) DWORD HttpExtensionProc(EXTENSION_CONTROL_BLOCK *p)
{
HTTPRequest *req;
HTTPResponse *resp = NULL;
WOURLComponents wc = WOURLComponents_Initializer;
const char *reqerr;
const char *qs;
char *script_name;
char *server_protocol;
char *uri;
WOURLError urlerr;
if (!adaptorEnabled)
{
WOLog(WO_ERR, "WebObjects adaptor disabled.");
return HSE_STATUS_ERROR;
}
/*
* extract WebObjects request components from URI
*/
script_name = getHeader(p, CGI_SCRIPT_NAME);
uri = WOMALLOC(strlen(p->lpszPathInfo) + strlen(script_name) + 1);
strcpy(uri, script_name);
strcat(uri, p->lpszPathInfo);
WOLog(WO_INFO,"<WebObjects ISAPI> new request: %s", uri);
WOFREE(script_name);
urlerr = WOParseApplicationName(&wc, uri);
if (urlerr != WOURLOK) {
const char *_urlerr;
_urlerr = WOURLstrerror(urlerr);
WOLog(WO_INFO,"URL Parsing Error: %s", _urlerr);
if (urlerr == WOURLInvalidApplicationName) {
if (ac_authorizeAppListing(&wc)) {
resp = WOAdaptorInfo(NULL, &wc);
WOFREE(uri); /* this has to be freed before a return in this function */
return die_resp(p, resp);
} else {
WOFREE(uri); /* this has to be freed before a return in this function */
return die(p, _urlerr, HTTP_NOT_FOUND);
}
}
WOFREE(uri); /* this has to be freed before a return in this function */
return die(p, _urlerr, HTTP_BAD_REQUEST);
}
/*
* build the request...
*/
req = req_new(p->lpszMethod, NULL);
/*
* validate the method
*/
reqerr = req_validateMethod(req);
if (reqerr) {
req_free(req);
WOFREE(uri); /* this has to be freed before a return in this function */
return die(p,reqerr, HTTP_BAD_REQUEST);
}
/*
* get the headers....
*/
copyHeaders(p, req);
/*
* get form data if any
* assume that POSTs with content length will be reformatted to GETs later
*/
req->content_length = p->cbTotalBytes;
if (req->content_length > 0)
{
char *buffer = WOMALLOC(req->content_length);
if (p->cbAvailable > 0)
memcpy(buffer, p->lpbData, p->cbAvailable);
/*
* IIS has a weird (or is it convenient?) data queuing mechanism...
*/
if (req->content_length > p->cbAvailable) {
DWORD len;
DWORD totalLength, fetchedLength;
len = req->content_length - p->cbAvailable;
totalLength = len;
fetchedLength = 0;
while (fetchedLength < totalLength) {
len = totalLength - fetchedLength;
if (p->ReadClient (p->ConnID,buffer + p->cbAvailable + fetchedLength, &len) != TRUE) {
WOFREE(buffer);
req_free(req);
return die(p, INV_FORM_DATA, HTTP_BAD_REQUEST);
}
fetchedLength += len;
}
}
req->content = buffer;
if (req_HeaderForKey(req, CONTENT_LENGTH) == NULL) {
char *length;
length = (char *)WOMALLOC(32);
if (length)
{
sprintf(length,"%d",req->content_length);
req_addHeader(req, CONTENT_LENGTH, length, STR_FREEVALUE);
}
if (p->lpszContentType != NULL)
req_addHeader(req, CONTENT_TYPE, p->lpszContentType, 0);
}
}
/* Always get the query string */
qs = p->lpszQueryString;
wc.queryString.start = qs;
wc.queryString.length = qs ? strlen(qs) : 0;
/*
* message the application & collect the response
*
* note that handleRequest free()'s the 'req' for us
*/
if (resp == NULL) {
/* if no error so far... */
req->api_handle = p; /* stash this... */
server_protocol = getHeader(p, CGI_SERVER_PROTOCOL);
resp = tr_handleRequest(req, uri, &wc, server_protocol, NULL);
WOFREE(server_protocol);
}
if (resp != NULL) {
sendResponse(p, resp);
resp_free(resp);
}
WOFREE(uri); /* this has to be freed before a return in this function */
req_free(req);
#if defined(FINDLEAKS)
showleaks();
#endif
return HSE_STATUS_SUCCESS;
}