void*
xmlNanoHTTPMethodRedir(const char *URL, const char *method, const char *input,
char **contentType, char **redir,
const char *headers, int ilen ) {
xmlNanoHTTPCtxtPtr ctxt;
char *bp, *p;
int blen, ret;
int head;
int nbRedirects = 0;
char *redirURL = NULL;
#ifdef DEBUG_HTTP
int xmt_bytes;
#endif
if (URL == NULL) return(NULL);
if (method == NULL) method = "GET";
xmlNanoHTTPInit();
retry:
if (redirURL == NULL)
ctxt = xmlNanoHTTPNewCtxt(URL);
else {
ctxt = xmlNanoHTTPNewCtxt(redirURL);
ctxt->location = xmlMemStrdup(redirURL);
}
if ( ctxt == NULL ) {
return ( NULL );
}
if ((ctxt->protocol == NULL) || (strcmp(ctxt->protocol, "http"))) {
__xmlIOErr(XML_FROM_HTTP, XML_HTTP_URL_SYNTAX, "Not a valid HTTP URI");
xmlNanoHTTPFreeCtxt(ctxt);
if (redirURL != NULL) xmlFree(redirURL);
return(NULL);
}
if (ctxt->hostname == NULL) {
__xmlIOErr(XML_FROM_HTTP, XML_HTTP_UNKNOWN_HOST,
"Failed to identify host in URI");
xmlNanoHTTPFreeCtxt(ctxt);
if (redirURL != NULL) xmlFree(redirURL);
return(NULL);
}
if (proxy) {
blen = strlen(ctxt->hostname) * 2 + 16;
ret = xmlNanoHTTPConnectHost(proxy, proxyPort);
}
else {
blen = strlen(ctxt->hostname);
ret = xmlNanoHTTPConnectHost(ctxt->hostname, ctxt->port);
}
if (ret < 0) {
xmlNanoHTTPFreeCtxt(ctxt);
if (redirURL != NULL) xmlFree(redirURL);
return(NULL);
}
ctxt->fd = ret;
if (input == NULL)
ilen = 0;
else
blen += 36;
if (headers != NULL)
blen += strlen(headers) + 2;
if (contentType && *contentType)
blen += strlen(*contentType) + 16;
if (ctxt->query != NULL)
blen += strlen(ctxt->query) + 1;
blen += strlen(method) + strlen(ctxt->path) + 24;
#ifdef HAVE_ZLIB_H
blen += 23;
#endif
bp = (char*)xmlMallocAtomic(blen);
if ( bp == NULL ) {
xmlNanoHTTPFreeCtxt( ctxt );
xmlHTTPErrMemory("allocating header buffer");
return ( NULL );
}
p = bp;
if (proxy) {
if (ctxt->port != 80) {
p += snprintf( p, blen - (p - bp), "%s http://%s:%d%s",
method, ctxt->hostname,
ctxt->port, ctxt->path );
}
else
p += snprintf( p, blen - (p - bp), "%s http://%s%s", method,
ctxt->hostname, ctxt->path);
}
else
p += snprintf( p, blen - (p - bp), "%s %s", method, ctxt->path);
if (ctxt->query != NULL)
p += snprintf( p, blen - (p - bp), "?%s", ctxt->query);
p += snprintf( p, blen - (p - bp), " HTTP/1.0\r\nHost: %s\r\n",
ctxt->hostname);
#ifdef HAVE_ZLIB_H
p += snprintf(p, blen - (p - bp), "Accept-Encoding: gzip\r\n");
#endif
if (contentType != NULL && *contentType)
p += snprintf(p, blen - (p - bp), "Content-Type: %s\r\n", *contentType);
if (headers != NULL)
p += snprintf( p, blen - (p - bp), "%s", headers );
if (input != NULL)
snprintf(p, blen - (p - bp), "Content-Length: %d\r\n\r\n", ilen );
else
snprintf(p, blen - (p - bp), "\r\n");
#ifdef DEBUG_HTTP
xmlGenericError(xmlGenericErrorContext,
"-> %s%s", proxy? "(Proxy) " : "", bp);
if ((blen -= strlen(bp)+1) < 0)
xmlGenericError(xmlGenericErrorContext,
"ERROR: overflowed buffer by %d bytes\n", -blen);
#endif
ctxt->outptr = ctxt->out = bp;
ctxt->state = XML_NANO_HTTP_WRITE;
blen = strlen( ctxt->out );
#ifdef DEBUG_HTTP
xmt_bytes = xmlNanoHTTPSend(ctxt, ctxt->out, blen );
if ( xmt_bytes != blen )
xmlGenericError( xmlGenericErrorContext,
"xmlNanoHTTPMethodRedir: Only %d of %d %s %s\n",
xmt_bytes, blen,
"bytes of HTTP headers sent to host",
ctxt->hostname );
#else
xmlNanoHTTPSend(ctxt, ctxt->out, blen );
#endif
if ( input != NULL ) {
#ifdef DEBUG_HTTP
xmt_bytes = xmlNanoHTTPSend( ctxt, input, ilen );
if ( xmt_bytes != ilen )
xmlGenericError( xmlGenericErrorContext,
"xmlNanoHTTPMethodRedir: Only %d of %d %s %s\n",
xmt_bytes, ilen,
"bytes of HTTP content sent to host",
ctxt->hostname );
#else
xmlNanoHTTPSend( ctxt, input, ilen );
#endif
}
ctxt->state = XML_NANO_HTTP_READ;
head = 1;
while ((p = xmlNanoHTTPReadLine(ctxt)) != NULL) {
if (head && (*p == 0)) {
head = 0;
ctxt->content = ctxt->inrptr;
xmlFree(p);
break;
}
xmlNanoHTTPScanAnswer(ctxt, p);
#ifdef DEBUG_HTTP
xmlGenericError(xmlGenericErrorContext, "<- %s\n", p);
#endif
xmlFree(p);
}
if ((ctxt->location != NULL) && (ctxt->returnValue >= 300) &&
(ctxt->returnValue < 400)) {
#ifdef DEBUG_HTTP
xmlGenericError(xmlGenericErrorContext,
"\nRedirect to: %s\n", ctxt->location);
#endif
while ( xmlNanoHTTPRecv(ctxt) > 0 ) ;
if (nbRedirects < XML_NANO_HTTP_MAX_REDIR) {
nbRedirects++;
if (redirURL != NULL)
xmlFree(redirURL);
redirURL = xmlMemStrdup(ctxt->location);
xmlNanoHTTPFreeCtxt(ctxt);
goto retry;
}
xmlNanoHTTPFreeCtxt(ctxt);
if (redirURL != NULL) xmlFree(redirURL);
#ifdef DEBUG_HTTP
xmlGenericError(xmlGenericErrorContext,
"xmlNanoHTTPMethodRedir: Too many redirects, aborting ...\n");
#endif
return(NULL);
}
if (contentType != NULL) {
if (ctxt->contentType != NULL)
*contentType = xmlMemStrdup(ctxt->contentType);
else
*contentType = NULL;
}
if ((redir != NULL) && (redirURL != NULL)) {
*redir = redirURL;
} else {
if (redirURL != NULL)
xmlFree(redirURL);
if (redir != NULL)
*redir = NULL;
}
#ifdef DEBUG_HTTP
if (ctxt->contentType != NULL)
xmlGenericError(xmlGenericErrorContext,
"\nCode %d, content-type '%s'\n\n",
ctxt->returnValue, ctxt->contentType);
else
xmlGenericError(xmlGenericErrorContext,
"\nCode %d, no content-type\n\n",
ctxt->returnValue);
#endif
return((void *) ctxt);
}
static int
xmlNanoHTTPRecv(xmlNanoHTTPCtxtPtr ctxt)
{
#ifdef HAVE_POLL_H
struct pollfd p;
#else
fd_set rfd;
struct timeval tv;
#endif
while (ctxt->state & XML_NANO_HTTP_READ) {
if (ctxt->in == NULL) {
ctxt->in = (char *) xmlMallocAtomic(65000 * sizeof(char));
if (ctxt->in == NULL) {
xmlHTTPErrMemory("allocating input");
ctxt->last = -1;
return (-1);
}
ctxt->inlen = 65000;
ctxt->inptr = ctxt->content = ctxt->inrptr = ctxt->in;
}
if (ctxt->inrptr > ctxt->in + XML_NANO_HTTP_CHUNK) {
int delta = ctxt->inrptr - ctxt->in;
int len = ctxt->inptr - ctxt->inrptr;
memmove(ctxt->in, ctxt->inrptr, len);
ctxt->inrptr -= delta;
ctxt->content -= delta;
ctxt->inptr -= delta;
}
if ((ctxt->in + ctxt->inlen) < (ctxt->inptr + XML_NANO_HTTP_CHUNK)) {
int d_inptr = ctxt->inptr - ctxt->in;
int d_content = ctxt->content - ctxt->in;
int d_inrptr = ctxt->inrptr - ctxt->in;
char *tmp_ptr = ctxt->in;
ctxt->inlen *= 2;
ctxt->in = (char *) xmlRealloc(tmp_ptr, ctxt->inlen);
if (ctxt->in == NULL) {
xmlHTTPErrMemory("allocating input buffer");
xmlFree(tmp_ptr);
ctxt->last = -1;
return (-1);
}
ctxt->inptr = ctxt->in + d_inptr;
ctxt->content = ctxt->in + d_content;
ctxt->inrptr = ctxt->in + d_inrptr;
}
ctxt->last = recv(ctxt->fd, ctxt->inptr, XML_NANO_HTTP_CHUNK, 0);
if (ctxt->last > 0) {
ctxt->inptr += ctxt->last;
return (ctxt->last);
}
if (ctxt->last == 0) {
return (0);
}
if (ctxt->last == -1) {
switch (socket_errno()) {
case EINPROGRESS:
case EWOULDBLOCK:
#if defined(EAGAIN) && EAGAIN != EWOULDBLOCK
case EAGAIN:
#endif
break;
case ECONNRESET:
case ESHUTDOWN:
return (0);
default:
__xmlIOErr(XML_FROM_HTTP, 0, "recv failed\n");
return (-1);
}
}
#ifdef HAVE_POLL_H
p.fd = ctxt->fd;
p.events = POLLIN;
if ((poll(&p, 1, timeout * 1000) < 1)
#if defined(EINTR)
&& (errno != EINTR)
#endif
)
return (0);
#else /* !HAVE_POLL_H */
#ifndef _WINSOCKAPI_
if (ctxt->fd > FD_SETSIZE)
return 0;
#endif
tv.tv_sec = timeout;
tv.tv_usec = 0;
FD_ZERO(&rfd);
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4018)
#endif
FD_SET(ctxt->fd, &rfd);
#ifdef _MSC_VER
#pragma warning(pop)
#endif
if ((select(ctxt->fd + 1, &rfd, NULL, NULL, &tv) < 1)
#if defined(EINTR)
&& (errno != EINTR)
#endif
)
return (0);
#endif /* !HAVE_POLL_H */
}
return (0);
}
/**
* xmlBufResize:
* @buf: the buffer to resize
* @size: the desired size
*
* Resize a buffer to accommodate minimum size of @size.
*
* Returns 0 in case of problems, 1 otherwise
*/
int
xmlBufResize(xmlBufPtr buf, size_t size)
{
unsigned int newSize;
xmlChar* rebuf = NULL;
size_t start_buf;
if ((buf == NULL) || (buf->error))
return(0);
CHECK_COMPAT(buf)
if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return(0);
/* Don't resize if we don't have to */
if (size < buf->size)
return 1;
/* figure out new size */
switch (buf->alloc){
case XML_BUFFER_ALLOC_IO:
case XML_BUFFER_ALLOC_DOUBLEIT:
/*take care of empty case*/
newSize = (buf->size ? buf->size*2 : size + 10);
while (size > newSize) {
if (newSize > UINT_MAX / 2) {
xmlBufMemoryError(buf, "growing buffer");
return 0;
}
newSize *= 2;
}
break;
case XML_BUFFER_ALLOC_EXACT:
newSize = size+10;
break;
case XML_BUFFER_ALLOC_HYBRID:
if (buf->use < BASE_BUFFER_SIZE)
newSize = size;
else {
newSize = buf->size * 2;
while (size > newSize) {
if (newSize > UINT_MAX / 2) {
xmlBufMemoryError(buf, "growing buffer");
return 0;
}
newSize *= 2;
}
}
break;
default:
newSize = size+10;
break;
}
if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
start_buf = buf->content - buf->contentIO;
if (start_buf > newSize) {
/* move data back to start */
memmove(buf->contentIO, buf->content, buf->use);
buf->content = buf->contentIO;
buf->content[buf->use] = 0;
buf->size += start_buf;
} else {
rebuf = (xmlChar *) xmlRealloc(buf->contentIO, start_buf + newSize);
if (rebuf == NULL) {
xmlBufMemoryError(buf, "growing buffer");
return 0;
}
buf->contentIO = rebuf;
buf->content = rebuf + start_buf;
}
} else {
if (buf->content == NULL) {
rebuf = (xmlChar *) xmlMallocAtomic(newSize);
} else if (buf->size - buf->use < 100) {
rebuf = (xmlChar *) xmlRealloc(buf->content, newSize);
} else {
/*
* if we are reallocating a buffer far from being full, it's
* better to make a new allocation and copy only the used range
* and free the old one.
*/
rebuf = (xmlChar *) xmlMallocAtomic(newSize);
if (rebuf != NULL) {
memcpy(rebuf, buf->content, buf->use);
xmlFree(buf->content);
rebuf[buf->use] = 0;
}
}
if (rebuf == NULL) {
xmlBufMemoryError(buf, "growing buffer");
return 0;
}
buf->content = rebuf;
}
buf->size = newSize;
UPDATE_COMPAT(buf)
return 1;
}
/**
* exsltCryptoRc4DecryptFunction:
* @ctxt: an XPath parser context
* @nargs: the number of arguments
*
* computes the sha1 hash of a string and returns as hex
*/
static void
exsltCryptoRc4DecryptFunction (xmlXPathParserContextPtr ctxt, int nargs) {
int key_len = 0, key_size = 0;
int str_len = 0, bin_len = 0, ret_len = 0;
xmlChar *key = NULL, *str = NULL, *padkey = NULL, *bin =
NULL, *ret = NULL;
xsltTransformContextPtr tctxt = NULL;
if (nargs != 2) {
xmlXPathSetArityError (ctxt);
return;
}
tctxt = xsltXPathGetTransformContext(ctxt);
str = xmlXPathPopString (ctxt);
str_len = xmlUTF8Strlen (str);
if (str_len == 0) {
xmlXPathReturnEmptyString (ctxt);
xmlFree (str);
return;
}
key = xmlXPathPopString (ctxt);
key_len = xmlUTF8Strlen (key);
if (key_len == 0) {
xmlXPathReturnEmptyString (ctxt);
xmlFree (key);
xmlFree (str);
return;
}
padkey = xmlMallocAtomic (RC4_KEY_LENGTH + 1);
if (padkey == NULL) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"exsltCryptoRc4EncryptFunction: Failed to allocate padkey\n");
tctxt->state = XSLT_STATE_STOPPED;
xmlXPathReturnEmptyString (ctxt);
goto done;
}
memset(padkey, 0, RC4_KEY_LENGTH + 1);
key_size = xmlUTF8Strsize (key, key_len);
if ((key_size > RC4_KEY_LENGTH) || (key_size < 0)) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"exsltCryptoRc4EncryptFunction: key size too long or key broken\n");
tctxt->state = XSLT_STATE_STOPPED;
xmlXPathReturnEmptyString (ctxt);
goto done;
}
memcpy (padkey, key, key_size);
/* decode hex to binary */
bin_len = str_len;
bin = xmlMallocAtomic (bin_len);
if (bin == NULL) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"exsltCryptoRc4EncryptFunction: Failed to allocate string\n");
tctxt->state = XSLT_STATE_STOPPED;
xmlXPathReturnEmptyString (ctxt);
goto done;
}
ret_len = exsltCryptoHex2Bin (str, str_len, bin, bin_len);
/* decrypt the binary blob */
ret = xmlMallocAtomic (ret_len);
if (ret == NULL) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"exsltCryptoRc4EncryptFunction: Failed to allocate result\n");
tctxt->state = XSLT_STATE_STOPPED;
xmlXPathReturnEmptyString (ctxt);
goto done;
}
PLATFORM_RC4_DECRYPT (ctxt, padkey, bin, ret_len, ret, ret_len);
xmlXPathReturnString (ctxt, ret);
done:
if (key != NULL)
xmlFree (key);
if (str != NULL)
xmlFree (str);
if (padkey != NULL)
xmlFree (padkey);
if (bin != NULL)
xmlFree (bin);
}
/**
* exsltCryptoRc4EncryptFunction:
* @ctxt: an XPath parser context
* @nargs: the number of arguments
*
* computes the sha1 hash of a string and returns as hex
*/
static void
exsltCryptoRc4EncryptFunction (xmlXPathParserContextPtr ctxt, int nargs) {
int key_len = 0, key_size = 0;
int str_len = 0, bin_len = 0, hex_len = 0;
xmlChar *key = NULL, *str = NULL, *padkey = NULL;
xmlChar *bin = NULL, *hex = NULL;
if ((nargs < 1) || (nargs > 3)) {
xmlXPathSetArityError (ctxt);
return;
}
str = xmlXPathPopString (ctxt);
str_len = xmlUTF8Strlen (str);
if (str_len == 0) {
xmlXPathReturnEmptyString (ctxt);
xmlFree (str);
return;
}
key = xmlXPathPopString (ctxt);
key_len = xmlUTF8Strlen (str);
if (key_len == 0) {
xmlXPathReturnEmptyString (ctxt);
xmlFree (key);
xmlFree (str);
return;
}
padkey = xmlMallocAtomic (RC4_KEY_LENGTH);
key_size = xmlUTF8Strsize (key, key_len);
memcpy (padkey, key, key_size);
memset (padkey + key_size, '\0', sizeof (padkey));
/* encrypt it */
bin_len = str_len;
bin = xmlStrdup (str);
if (bin == NULL) {
xmlXPathReturnEmptyString (ctxt);
goto done;
}
PLATFORM_RC4_ENCRYPT (ctxt, padkey, str, str_len, bin, bin_len);
/* encode it */
hex_len = str_len * 2 + 1;
hex = xmlMallocAtomic (hex_len);
if (hex == NULL) {
xmlXPathReturnEmptyString (ctxt);
goto done;
}
exsltCryptoBin2Hex (bin, str_len, hex, hex_len);
xmlXPathReturnString (ctxt, hex);
done:
if (key != NULL)
xmlFree (key);
if (str != NULL)
xmlFree (str);
if (padkey != NULL)
xmlFree (padkey);
if (bin != NULL)
xmlFree (bin);
}
