static int sendResponse(Session *sn, Request *rq, HTTPResponse *resp)
{
pb_param *pb_entry;
/*
* collect up the headers
*/
pb_entry = pblock_remove(CONTENT_TYPE,rq->srvhdrs); /* remove default */
param_free(pb_entry); /* aB. Need to free parameters we remove from pblocks !!! */
st_perform(resp->headers,gethdr,rq);
/*
* ensure a content length
*/
if (pblock_findval(CONTENT_LENGTH, rq->srvhdrs) == NULL) {
char length[64];
util_itoa(resp->content_length,length);
pblock_nvinsert(CONTENT_LENGTH,length, rq->srvhdrs);
}
protocol_status(sn, rq, resp->status, resp->statusMsg);
if (protocol_start_response(sn, rq) == REQ_NOACTION) {
WOLog(WO_ERR,"protocol_start_response() returned REQ_NOACTION (!?)");
return REQ_PROCEED;
}
if (resp->content_length)
if (net_write(sn->csd, resp->content, resp->content_length) == IO_ERROR) {
WOLog(WO_ERR,"Failed to send content to client");
return REQ_EXIT;
}
return REQ_PROCEED;
}
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;
}
/*
* Writes len bytes of zeros at the end of the open file fd.
* Returns the number of bytes actually written. If this is
* less than len, an error occurred (which was logged).
* In general the size written may be larger than what was requested.
*/
static int append_zeros(int fd, int len)
{
/* write zeros to initialize */
int buff[1024], result, ret = 0;
char *errMsg = NULL;
memset(buff, 0, sizeof(buff));
while (len > 0 && !errMsg)
{
if (lseek(WOShmem_fd, 0, SEEK_END) == -1)
{
errMsg = WA_errorDescription(WA_error());
WOLog(WO_ERR, "append_zeros: lseek() failed: %s", errMsg);
}
if (!errMsg)
{
result = write(WOShmem_fd, buff, sizeof(buff));
if (result == -1)
{
errMsg = WA_errorDescription(WA_error());
WOLog(WO_ERR, "append_zeros: write() failed: %s", errMsg);
} else {
len -= result;
ret += result;
}
}
}
if (errMsg)
WA_freeErrorDescription(errMsg);
return ret;
}
void *sha_checkout(ShmemArray *array, unsigned int elementNumber)
{
void *element;
if (elementNumber < array->elementCount)
{
/* read locks block if a write is pending */
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_checkout(): about to check out %s element %d", array->name, elementNumber);
#endif
WA_lock(array->elements[elementNumber].writeLock);
WA_lock(array->elements[elementNumber].lock);
WA_unlock(array->elements[elementNumber].writeLock);
element = array->elements[elementNumber].element;
/* if this was the first read lock by this process, obtain a file lock on the data as well */
if (array->elements[elementNumber].lockCount == 0)
array->elements[elementNumber].lockHandle = WOShmem_lock(element, array->elementSize, 0);
array->elements[elementNumber].lockCount++;
WA_unlock(array->elements[elementNumber].lock);
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_checkout(): checked out %s element %d", array->name, elementNumber);
#endif
} else {
element = NULL;
WOLog(WO_ERR, "sha_checkout(): failed to check out %s element %d", array->name, elementNumber);
}
return element;
}
inline static int lock_file_section(int fd, off_t start, off_t len, struct flock *lockInfo, int exclusive)
{
int err, errCount = 0;
do {
lockInfo->l_start = start;
lockInfo->l_len = len;
lockInfo->l_type = exclusive ? F_WRLCK : F_RDLCK;
lockInfo->l_whence = SEEK_SET;
if (fcntl(WOShmem_fd, F_SETLKW, lockInfo) == -1)
{
err = WA_error();
errCount++;
if (err != EAGAIN || errCount % 10 == 0)
{
char *errMsg = WA_errorDescription(err);
WOLog(WO_ERR, "lock_file_section(): failed to lock (%d attempts): %s", errCount, errMsg);
WA_freeErrorDescription(errMsg);
}
if (err == EAGAIN)
{
WA_yield();
if (errCount > LOCK_RETRY_SLEEP_COUNT)
sleep(1);
if (errCount > LOCK_RETRY_FAIL_COUNT)
{
WOLog(WO_ERR, "lock_file_section(): could not aquire lock after %d attempts. Giving up.", LOCK_RETRY_FAIL_COUNT);
}
}
} else
err = 0;
} while (err == EAGAIN && errCount < LOCK_RETRY_FAIL_COUNT);
return err;
}
static TR_STATUS sendbytes(net_fd appfd, const char *buf, int len)
{
int remaining, sent, n;
int s = appfd->s;
struct timeval tv;
fd_set wset;
TR_STATUS ret = TR_OK;
if (appfd->status != TR_OK)
return TR_ERROR;
remaining = len;
while (remaining > 0 && ret == TR_OK) {
while((sent = send(s, (void *)buf, remaining, 0)) < 0 && ret == TR_OK) {
int ec = WA_error();
if (WA_wouldBlock(ec)) {
FD_ZERO(&wset);
FD_SET(s, &wset);
tv.tv_sec = appfd->send_to;
tv.tv_usec = 0;
n = select(s + 1, NULL, &wset, NULL, &tv);
if (n == 0) {
/* Timed out */
WOLog(WO_DBG, "sendbytes(): timed out");
ret = TR_TIMEOUT;
break;
} else if (n < 0) {
char *errMsg = WA_errorDescription(WA_error());
WOLog(WO_ERR, "sendbytes(): select error: %s", errMsg);
WA_freeErrorDescription(errMsg);
ret = TR_ERROR;
break;
}
/* Drop back into the while loop and retry the send() */
} else if (WA_intr(ec)) {
/* Try send again */
} else if (WA_brokenPipe(ec)) {
ret = TR_RESET;
} else {
/* If we get EPIPE or any other error, bail out. */
char *errMsg = WA_errorDescription(WA_error());
WOLog(WO_ERR, "sendbytes(): send error: %s", errMsg);
WA_freeErrorDescription(errMsg);
ret = TR_ERROR;
break;
}
}
/* if we get here with sent < 0, we have a failure */
if (ret != TR_OK && ret != TR_RESET) {
WOLog(WO_ERR,"sendbytes(): failed to send data to app");
} else {
remaining -= sent;
buf += sent;
}
}
return ret;
}
int req_sendRequest(HTTPRequest *req, net_fd socket)
{
struct iovec *buffers, *bufferIterator;
int bufferCount, result;
buffers = WOMALLOC((st_count(req->headers) * 4 + 3) * sizeof(struct iovec));
buffers[0].iov_base = req->request_str;
buffers[0].iov_len = strlen(req->request_str);
bufferIterator = &buffers[1];
st_perform(req->headers, (st_perform_callback)setupIOVec, &bufferIterator);
bufferIterator->iov_base = "\r\n";
bufferIterator->iov_len = 2;
bufferCount = st_count(req->headers) * 4 + 2;
if (req->content_length > 0)
{
bufferCount++;
bufferIterator++;
bufferIterator->iov_base = req->content;
bufferIterator->iov_len = req->content_buffer_size;
}
result = transport->sendBuffers(socket, buffers, bufferCount);
/* If we are streaming the content data, continue until we have sent everything. */
/* Note that we reuse buffers, and the existing content-data buffer. */
if (req->content_length > req->content_buffer_size)
{
long total_sent = req->content_buffer_size;
long len_read, amount_to_read;
req->haveReadStreamedData = 1;
while (total_sent < req->content_length && result == 0)
{
amount_to_read = req->content_length - total_sent;
if (amount_to_read > req->content_buffer_size)
amount_to_read = req->content_buffer_size;
len_read = req->getMoreContent(req, req->content, amount_to_read, 0);
if (len_read > 0)
{
buffers[0].iov_base = req->content;
buffers[0].iov_len = len_read;
result = transport->sendBuffers(socket, buffers, 1);
total_sent += len_read;
} else if (len_read < 0) {
WOLog(WO_ERR, "Failed to read streamed content.");
result = -1;
}
}
}
WOFREE(buffers);
if (result == 0)
result = transport->flush_connection(socket);
else
WOLog(WO_ERR, "error sending request");
return result;
}
/*
* The entry point for the parser.
* Returns nonzero if there was an error during parsing.
*/
static int xml_parseConfiguration(char *buf, int len)
{
XMLCDocumentHandler handler;
WOXMLEdits config;
XMLCParser *parser;
int error = 0, i;
/* initialize the config struct */
config.current_element = NULL;
config.new_apps = wolist_new(16);
config.current_app = NULL;
config.current_app_instances = NULL;
config.current_instance = NULL;
config.new_app_instances = wolist_new(16);
config.error = 0;
config.errorLocation = buf;
if (len == 0)
return 1; /* no content is considered an error */
/* Set up a new document handler struct for the parser */
memcpy(&handler, &_document, sizeof(XMLCDocumentHandler));
handler.document = (XMLCDocument *)(&config);
/* set up and invoke the xml parser */
parser = xmlcParserInit();
xmlcTokenizerSetBuffer(parser->tokenizer, buf, len);
xmlcParserSetPreserveWhiteSpace(parser, 0);
error = (int)xmlcParserParse(parser, &handler);
if (error != 0) {
/* config error */
WOLog(WO_ERR,"Error parsing configuration: %s", xmlcParserErrorDescription(error));
if ((intptr_t)config.errorLocation < (intptr_t)buf + len)
{
char *badconfig = WOMALLOC((len+1)*sizeof(char));
strncpy(badconfig, buf, len);
badconfig[len] = '\0';
WOLog(WO_ERR,"Error near:\n%s", config.errorLocation);
WOFREE(badconfig);
}
} else {
/*
* load the new settings...
*/
if (config.new_apps)
for (i=0; i<wolist_count(config.new_apps); i++)
ac_updateApplication((strtbl *)wolist_elementAt(config.new_apps, i), (list *)wolist_elementAt(config.new_app_instances, i));
}
/* clean up and return */
freeWOXMLEdits(&config);
xmlcParserDealloc(parser);
return error;
}
static void copyHeaderForServerVariable(char *var, EXTENSION_CONTROL_BLOCK *p, HTTPRequest *req) {
char *buf, *value, stackBuf[2048];
DWORD bufsz = sizeof(stackBuf), pos;
WOLog(WO_DBG, "reading buffer for server variable %s", var);
if (p->GetServerVariable(p->ConnID, var, stackBuf, &bufsz) == TRUE) {
buf = stackBuf;
} else {
if(GetLastError() == 122) // ERROR_INSUFFICIENT_BUFFER
{
WOLog(WO_DBG, "buffer too small; need %d", bufsz);
buf = WOMALLOC(bufsz);
if (p->GetServerVariable(p->ConnID, var, buf, &bufsz) != TRUE)
{
WOFREE(buf);
WOLog(WO_ERR, "Could not get header.");
return;
}
} else
return; // header not set
}
if (buf) {
//WOLog(WO_DBG, "got raw buffer: %s", buf);
pos = 0;
while (pos < bufsz) {
while (pos < bufsz && buf[pos] < 33)
pos++;
if (pos < bufsz) {
/* got start of new value */
value = &buf[pos];
do {
while (pos < bufsz && buf[pos] != '\r')
pos++;
if (pos + 2 < bufsz && buf[pos+1] == '\n' && (buf[pos+2] == ' ' || buf[pos+2] == '\t')) {
/* got a multiline header; change CRLF to whitespace and keep parsing */
buf[pos] = ' ';
buf[pos+1] = ' ';
} else {
buf[pos] = 0;
}
} while (pos < bufsz && buf[pos] != 0);
WOLog(WO_DBG, "found value=\"%s\"", value ? value : "(NULL)");
if (value)
req_addHeader(req, var, value, STR_COPYKEY|STR_COPYVALUE);
else
req_addHeader(req, var, "", STR_COPYKEY);
}
}
if (buf != stackBuf)
WOFREE(buf);
}
return;
}
static int nonBlockingConnectHostent(int sd, int connectTimeout, struct hostent *hostentry, unsigned int port) {
int n, rc;
fd_set wset;
struct timeval tval;
struct sockaddr_in connect_addr;
int connect_addr_len;
rc = 0;
if (hostentry) {
connect_addr.sin_family = AF_INET;
connect_addr.sin_port = htons((unsigned short)port);
memcpy(&connect_addr.sin_addr, hostentry->h_addr_list[0], hostentry->h_length);
connect_addr_len = sizeof(struct sockaddr_in);
/* Since we're non-blocking, we expect an EINPROGRESS error. */
if ((n = connect(sd, (struct sockaddr *)&connect_addr, connect_addr_len)) < 0) {
int ec = WA_error();
/* Note that on Windows, connect returns WSAEWOULDBLOCK, not WSAEINPROGRESS. */
if (!WA_inProgress(ec) && !WA_wouldBlock(ec)) {
char *errMsg = WA_errorDescription(ec);
WOLog(WO_ERR, "WOSocket: connect error in NB connect: %s", errMsg);
WA_freeErrorDescription(errMsg);
return -1;
}
}
/* If n = 0, we connected immediately (e.g. client = host). */
if (n) {
FD_ZERO(&wset);
FD_SET(sd, &wset);
tval.tv_sec = connectTimeout;
tval.tv_usec = 0;
if ((n = select(sd + 1, NULL, &wset, NULL, &tval)) < 0)
{
WOLog(WO_DBG, "WOSocket: select failed");
return -1;
}
if (n == 0)
{
/* timed out */
WOLog(WO_DBG, "WOSocket: connect timeout in NB connect");
return -2;
}
}
} else {
WOLog(WO_ERR, "WOSocket: hostent NULL - unknown host?");
rc = -1;
}
return rc;
}
void resp_addHeader(HTTPResponse *resp, String *rawhdr)
{
char *key, *value;
/* keep track of the String */
resp_addStringToResponse(resp, rawhdr);
/*
* break into key/value, make key lowercase
* Note that this walks over the String's buffer, but
* at this point the response owns the String so that's ok.
* The String buffer will get reclaimed when responseStrings
* is freed, in resp_free().
*/
for (key = rawhdr->text, value = key; *value != ':'; value++) {
if(*value == '\0') // mstoll 13.10.2005 check added
{
WOLog(WO_ERR,"Header without ':': %s", rawhdr->text);
break;
}
if (isupper((int)*value))
*value = tolower((int)*value); /* ... and change to lowercase. */
}
if (*value == ':') {
*value++ = '\0'; /* terminate key string */
while (*value && isspace((int)*value)) value++;
} else {
return; /* Zounds ! something wrong with header... */
}
st_add(resp->headers, key, value, 0);
/*
* scan inline for content-length
*/
if ((resp->content_length == 0) && ((strcasecmp(CONTENT_LENGTH,key) == 0) || strcasecmp("content_length", key) == 0))
{
// 2009/06/10: an explicit content-length value is available.
// Update response flag information:
resp->flags |= RESP_LENGTH_EXPLICIT;
resp->content_length = atoi(value);
WOLog(WO_INFO,"content-length was set expl.: %d", resp->content_length);
}
if (((strcasecmp(CONTENT_TYPE,key) == 0) || strcasecmp("content_type", key) == 0))
{
// 2011/11/16: an explicit content-type value is available.
// Update response flag information:
resp->flags |= RESP_CONTENT_TYPE_SET;
}
return;
}
static void sig_handler(int signum) {
switch (signum) {
case SIGUSR1 : should_terminate = 1;
WOLog(WO_INFO,"<FastCGI> Signal %s caught", strsignal(signum));
break;
case SIGPIPE : WOLog(WO_WARN,"<FastCGI> Signal %s caught", strsignal(signum));
break;
case SIGTERM : WOLog(WO_ERR,"<FastCGI> Signal %s caught", strsignal(signum));
exit(-1);
default: WOLog( WO_INFO,"<FastCGI> Signal %s caught", strsignal(signum));
}
}
/*
* Called from the xml parser.
* Here is where we begin parsing <application>... or <instance>...
* or <adaptor>...
*/
static void createElement(XMLCDocument *document, const XMLCCharacter *name, const unsigned int length)
{
WOXMLEdits *config = (WOXMLEdits *)document;
if (config->error != 0) /* would be nice to tell parser to stop */
return;
config->errorLocation = name;
if (length == 7 && strncasecmp(name, "adaptor", length) == 0)
{
/* do nothing; don't generate a warning */
} else if (length == 11 && strncasecmp(name, "application", length) == 0) {
/* begin <application> */
if (config->current_element != NULL) {
WOLog(WO_ERR,"Error parsing config: found unexpected <application> tag");
config->error = 1;
return;
}
/* create new app settings dictionary, instance list, and set current_element to the app dictionary*/
config->current_app = st_new(8);
wolist_add(config->new_apps, config->current_app);
config->current_app_instances = wolist_new(8);
wolist_add(config->new_app_instances, config->current_app_instances);
config->current_element = config->current_app;
} else if (length == 8 && strncasecmp(name, "instance", length) == 0) {
/* begin <instance> */
if (config->current_element != config->current_app || config->current_app == NULL) {
WOLog(WO_ERR,"Error parsing config: found unexpected <instance> tag");
config->error = 1;
return;
}
/* create new instance settings dictionary and set current_element to point to it */
config->current_instance = st_new(8);
wolist_add(config->current_app_instances, config->current_instance);
config->current_element = config->current_instance;
} else {
/* Got something unexpected. Ignore the tag. */
char *buffer = WOMALLOC(length+1);
strncpy(buffer,name,length);
buffer[length] = '\0';
WOLog(WO_WARN,"Unknown tag in XML: \"%s\"",buffer);
config->current_element = NULL;
WOFREE(buffer);
}
return;
}
/* Returns the number of bytes read, or -1 on error. */
static int readContentData(HTTPRequest *req, void *buffer, int dataSize, int mustFill)
{
WOLog (WO_INFO, "data size: %d", dataSize );
//int n = fread(buffer, 1, dataSize, stdin);
int n = FCGX_GetStr(buffer, dataSize, in);
if (n != dataSize) {
//int err = ferror(stdin);
int err = FCGX_GetError(in);
if (err)
WOLog(WO_ERR,"Error getting content data: %s (%d)", strerror(errno), err);
}
/* *((char*)buffer+dataSize) = '\0';
WOLog ( WO_INFO, "buffer: %s", (char *)buffer );*/
return n == dataSize ? n : -1;
}
static DWORD die(EXTENSION_CONTROL_BLOCK *p, const char *msg, int status)
{
HTTPResponse *resp;
WOLog(WO_ERR,"Sending aborting request - %s",msg);
resp = resp_errorResponse(msg, status);
return die_resp(p, resp);
}
void st_add(strtbl *st, const char *key, const char *value, int flags)
{
strtblelem *kv;
kv = st_newKV(st);
if (kv != NULL)
{
st->count++;
kv->flags = flags;
if (flags & STR_COPYKEY)
{
kv->key = WOSTRDUP(key);
kv->flags |= STR_FREEKEY;
} else
kv->key = key;
if (flags & STR_COPYVALUE)
{
kv->value = WOSTRDUP(value);
kv->flags |= STR_FREEVALUE;
} else
kv->value = value;
} else
WOLog(WO_ERR, "st_add(): no space to add element: %s = %s", key, value);
return;
}
const char *documentRoot() {
static char path[MAXPATHLEN+1] = "";
if (path[0] == '\0') {
#ifdef WIN32
WOReadKeyFromConfiguration(CGI_DOCUMENT_ROOT, path, MAXPATHLEN);
#else
const char *doc_root;
/* Apache provides this as an environment variable straight */
if ((doc_root = FCGX_GetParam(CGI_DOCUMENT_ROOT, hdrp)) != NULL) {
strncpy(path, doc_root, MAXPATHLEN);
} else {
const char *path_trans, *path_info;
path_trans = FCGX_GetParam(PATH_TRANSLATED, hdrp);
path_info = FCGX_GetParam(CGI_PATH_INFO, hdrp);
if (path_trans && path_info) {
char *e = strstr(path_trans,path_info);
if (e) {
strncpy(path,path_trans,e-path_trans);
}
}
}
#endif
}
if (path[0] != '\0')
return path;
else {
WOLog(WO_ERR,"<FastCGI> Can't find document root in CGI variables");
return "/usr/local/apache/htdocs"; /* this is bad.... */
}
}
void *sd_add(strdict *sd, const char *key, void *value)
{
strdictel *kv;
void *oldValue;
oldValue = sd_removeKey(sd, key);
if (value != NULL)
{
if (sd->count == sd->capacity) {
kv = findNull(sd); /* try to recycle space */
if (kv == NULL) {
sd_setCapacity(sd, sd->capacity * 2); /* make more space */
if (sd->count == sd->capacity)
{
WOLog(WO_ERR, "sd_add(): could not add element (%s = %s) due to allocation failure", key, value);
return oldValue;
} else {
kv = sd->head + sd->count;
sd->count++;
}
}
} else {
kv = sd->head + sd->count;
sd->count++;
}
kv->key = WOSTRDUP(key);
kv->value = value;
}
return oldValue;
}
HTTPResponse *resp_new(char *statusStr, WOInstanceHandle instHandle, WOConnection *instanceConnection)
{
HTTPResponse *resp;
char *status = statusStr;
/*
* reformat the status line from
* "HTTP/1.0 200 OK Apple WebObjects" to "OK Apple..."
*/
while (status && *status && !isspace((int)*status)) status++;
while (*status && !isdigit((int)*status)) status++;
if ( !(status && *status) ) {
WOLog(WO_ERR,"Invalid response!");
return NULL;
}
resp = WOCALLOC(1,sizeof(HTTPResponse));
resp->status = atoi(status);
resp->statusMsg = (char *)apple;
if (strncmp(statusStr, "HTTP/1.", 7) == 0)
{
if (statusStr[7] == '0')
resp->flags |= RESP_HTTP10;
else if (statusStr[7] == '1')
resp->flags |= RESP_HTTP11;
}
resp->headers = st_new(10);
resp->instanceConnection = instanceConnection;
resp->instHandle = instHandle;
return resp;
}
static HTTPResponse *_errorResponse(WOAppReq *app, WOURLComponents *wc, HTTPRequest *req)
{
HTTPResponse *resp;
const char *redirect_url = &app->redirect_url[0];
WOLog(WO_ERR,"Request handling error: %s",_errors[app->error]);
if (app->redirect_url[0] == 0)
redirect_url = adaptor_valueForKey(WOERRREDIR);
/*
* try to do the right thing...
*/
if (redirect_url != NULL) {
resp = resp_redirectedResponse(redirect_url);
} else if (app->error == err_notFound) {
if (ac_authorizeAppListing(wc))
resp = WOAdaptorInfo(NULL, wc);
else {
resp = resp_errorResponse(NOT_FOUND_APP, HTTP_NOT_FOUND);
if (resp->statusMsg) WOFREE(resp->statusMsg);
resp->statusMsg = WOSTRDUP("File Not Found");
}
} else
resp = resp_errorResponse(_errors[app->error], HTTP_SERVER_ERROR);
if (resp)
{
st_add(resp->headers, "Cache-Control", "no-cache, private, no-store, must-revalidate, max-age=0", 0);
st_add(resp->headers, "Expires", "Thu, 01 Jan 1970 00:00:00 GMT", 0);
st_add(resp->headers, "date", "Thu, 01 Jan 1970 00:00:00 GMT", 0);
st_add(resp->headers, "pragma", "no-cache", 0);
}
return resp;
}
/*
* common routing to add header called by both addHeader()
*/
inline
static
const char *req_AddHeader_common(HTTPRequest *req,const char *key,const char *value)
{
const char *customKey;
const char *hdrkey;
customKey = customHeaderFor(key);
hdrkey = (customKey != NULL) ? customKey : key;
if (req->headers == NULL)
req->headers = st_new(HEADER_CNT);
/*
* we inspect the headers in line here to grab the content length
*/
if ((req->content_length == 0) &&
((strcasecmp(key, CONTENT_LENGTH) == 0) || (strcasecmp(key, "content_length") == 0))) /* get content-length */
req->content_length = atol(value);
#ifdef DEBUG
WOLog(WO_DBG,"(req-hdr) %s: %s",key, value);
#endif
return hdrkey;
}
/*
* Ensure that the open file fd is at least size bytes long.
* Expands the file as needed using append_zeros(). File locking
* is used to ensure no data is overwritten.
* Returns the actual size of the file on success, -1 on error.
*/
static int ensure_file_size(int fd, size_t size)
{
struct stat st;
struct flock lockInfo;
char *errMsg = NULL;
int error = 0;
if (fstat(WOShmem_fd, &st))
{
errMsg = WA_errorDescription(WA_error());
WOLog(WO_ERR, "ensure_file_size(): initial fstat() failed: %s", errMsg);
error = 1;
}
if (!error && st.st_size < size)
{
if (lock_file_section(WOShmem_fd, st.st_size, size - st.st_size, &lockInfo, 1))
{
error = 1;
} else {
/* someone else may have just changed the size, so repeat the stat */
if (fstat(WOShmem_fd, &st))
{
errMsg = WA_errorDescription(WA_error());
WOLog(WO_ERR, "ensure_file_size(): second fstat() failed: %s", errMsg);
WA_freeErrorDescription(errMsg);
error = 1;
}
if (!error && st.st_size < size)
{
st.st_size += append_zeros(WOShmem_fd, size - st.st_size);
if (st.st_size < size)
error = 1;
}
lockInfo.l_type = F_UNLCK;
if (fcntl(WOShmem_fd, F_SETLK, &lockInfo) == -1)
{
errMsg = WA_errorDescription(WA_error());
WOLog(WO_ERR, "ensure_file_size(): failed to unlock: %s", errMsg);
WA_freeErrorDescription(errMsg);
error = 1;
}
}
}
return error ? -1 : st.st_size;
}
/*
* here's where we end application/instance/error parsing
*/
static void endElementNamed(XMLCDocument *document, const XMLCCharacter *name, const unsigned int length)
{
WOXMLEdits *config = (WOXMLEdits *)document;
if (config->error != 0) /* would be nice to tell parser to stop */
return;
if (length == 7 && strncasecmp(name, "adaptor", 7) == 0)
{
/* do nothing; don't generate a warning */
} else if (length == 11 && strncasecmp(name, "application", 11) == 0) {
if (config->current_element != config->current_app) {
WOLog(WO_ERR,"Error parsing config: </application> found at top level or with open <instance> tag");
config->error = 1;
return;
}
config->current_element = NULL;
config->current_app = NULL;
config->current_app_instances = NULL;
} else if (length == 8 && strncasecmp(name, "instance", 8) == 0) {
if (config->current_element != config->current_instance) {
WOLog(WO_ERR,"Error parsing config: unexpected </instance>");
config->error = 1;
return;
}
config->current_element = config->current_app;
config->current_instance = NULL;
} else if (length == 7 && strncasecmp(name, "adaptor", 7) == 0) {
config->current_element = NULL;
} else {
#ifdef _MSC_VER // SWK VC can't allocate dynamic char buffer[length + 1]
char *buffer = (char *)alloca((length+1) * sizeof(char));
#else
char buffer[length+1];
#endif
strncpy(buffer,name,length);
buffer[length] = '\0';
WOLog(WO_WARN,"Unknown end tag in XML: %s",buffer);
if (config->current_element != NULL) /* only an error if we were parsing something we know about */
config->error = 1;
}
return;
}
void sha_unlock(ShmemArray *array, unsigned int elementNumber)
{
if (elementNumber < array->elementCount)
{
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_unlock(): about to unlock %s element %d", array->name, elementNumber);
#endif
WA_lock(array->elements[elementNumber].lock);
/* release the file lock on the data */
WOShmem_unlock(array->elements[elementNumber].lockHandle);
array->elements[elementNumber].lockHandle = NULL;
WA_unlock(array->elements[elementNumber].lock);
WA_unlock(array->elements[elementNumber].writeLock);
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_unlock(): unlocked %s element %d", array->name, elementNumber);
#endif
}
}
void WA_lock(WA_recursiveLock _lock)
#endif
{
WinRecursiveLock *lock = (WinRecursiveLock *)_lock;
#ifdef EXTRA_DEBUGGING_LOGS
if (_lock != logMutex)
WOLog(WO_DBG, "locking %s from %s:%d", lock->name, file, line);
#endif
WaitForSingleObject(lock->lock, INFINITE);
}
void WA_unlock(WA_recursiveLock _lock)
#endif
{
WinRecursiveLock *lock = (WinRecursiveLock *)_lock;
#ifdef EXTRA_DEBUGGING_LOGS
if (_lock != logMutex)
WOLog(WO_DBG, "unlocking %s from %s:%d", lock->name, file, line);
#endif
ReleaseMutex(lock->lock);
}
static TR_STATUS reset(net_fd appfd)
{
int result, warned = 0, n;
struct timeval tv;
fd_set wset;
if (appfd->status != TR_OK)
return TR_ERROR;
/* drain any data from the socket */
do {
result = nonBlockingRecv(appfd, 0, appfd->buf, NETBUFSZ);
if (result > 0 && warned == 0)
{
WOLog(WO_WARN, "reset(): leftover data in socket buffer");
warned = 1;
}
if (result == -1 && appfd->status == TR_TIMEOUT)
appfd->status = TR_OK;
} while (result > 0);
/* clear our buffer */
if (appfd->status == TR_OK)
{
if (appfd->count != 0)
WOLog(WO_WARN, "reset(): leftover data in buffer");
appfd->count = 0;
appfd->pos = appfd->buf;
FD_ZERO(&wset);
FD_SET(appfd->s, &wset);
tv.tv_sec = 0;
tv.tv_usec = 0;
n = select(appfd->s + 1, NULL, &wset, NULL, &tv);
if (n != 1)
{
WOLog(WO_WARN, "reset(): connection dropped");
appfd->status = TR_RESET;
}
}
return appfd->status;
}
void sha_checkin(ShmemArray *array, unsigned int elementNumber)
{
if (elementNumber < array->elementCount)
{
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_checkin(): about to check in %s element %d", array->name, elementNumber);
#endif
WA_lock(array->elements[elementNumber].lock);
array->elements[elementNumber].lockCount--;
/* if this was the last read lock by this process, release the file lock on the data as well */
if (array->elements[elementNumber].lockCount == 0)
{
WOShmem_unlock(array->elements[elementNumber].lockHandle);
array->elements[elementNumber].lockHandle = NULL;
}
WA_unlock(array->elements[elementNumber].lock);
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_checkin(): checked in %s element %d", array->name, elementNumber);
#endif
}
}
static void sendResponse(EXTENSION_CONTROL_BLOCK *p, HTTPResponse *resp)
{
String *resphdrs;
char status[128];
DWORD len;
p->dwHttpStatusCode = resp->status;
sprintf(status, "%d %s",resp->status, resp->statusMsg);
/*
* send the headers (collected into one buffer)
*/
resphdrs = resp_packageHeaders(resp);
if (resphdrs)
{
len = resphdrs->length;
/* ccording to the Microsoft web site, HSE_REQ_SEND_RESPONSE_HEADER is depreciated */
/* HSE_REQ_SEND_RESPONSE_HEADER_EX is preferred. */
/* However, moving to HSE_REQ_SEND_RESPONSE_HEADER_EX will not work if we must support IIS 3.0. */
if (p->ServerSupportFunction(p->ConnID, HSE_REQ_SEND_RESPONSE_HEADER,
status, &len, (LPDWORD)resphdrs->text) != TRUE)
{
WOLog(WO_ERR,"Failed to send response headers (%d)", GetLastError());
} else {
len = 2;
if (p->WriteClient(p->ConnID, CRLF, &len, 0) != TRUE)
WOLog(WO_ERR,"Failed to send \\r\\n (%d)", GetLastError());
/*
* send the content data
*/
len = resp->content_length;
if (len && (p->WriteClient(p->ConnID, resp->content, &len, 0) != TRUE))
WOLog(WO_ERR,"Failed to send content (%d)", GetLastError());
}
str_free(resphdrs);
} /* else? return warning */
return;
}
void *sha_lock(ShmemArray *array, unsigned int elementNumber)
{
void *element;
if (elementNumber < array->elementCount)
{
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_lock(): about to lock %s element %d", array->name, elementNumber);
#endif
/* block read lock requests */
WA_lock(array->elements[elementNumber].writeLock);
WA_lock(array->elements[elementNumber].lock);
int maxTry = 10000;
while (array->elements[elementNumber].lockCount > 0 && maxTry-- > 0)
{
WA_unlock(array->elements[elementNumber].lock);
WA_yield();
WA_lock(array->elements[elementNumber].lock);
}
if(array->elements[elementNumber].lockCount <= 0)
{
element = array->elements[elementNumber].element;
array->elements[elementNumber].lockHandle = WOShmem_lock(element, array->elementSize, 1);
WA_unlock(array->elements[elementNumber].lock);
#ifdef EXTRA_DEBUGGING_LOGS
WOLog(WO_DBG, "sha_lock(): locked %s element %d", array->name, elementNumber);
#endif
} else
{
WA_unlock(array->elements[elementNumber].lock);
WA_unlock(array->elements[elementNumber].writeLock);
element = NULL;
WOLog(WO_ERR, "sha_lock(): element already locked: %s / %d", array->name, elementNumber);
}
} else {
element = NULL;
WOLog(WO_ERR, "sha_lock(): failed to lock %s element %d", array->name, elementNumber);
}
return element;
}
