Update from https://crrev.com/328418

third_party/libxml/src/nanohttp.c

Index: third_party/libxml/src/nanohttp.c
diff --git a/third_party/libxml/src/nanohttp.c b/third_party/libxml/src/nanohttp.c
deleted file mode 100644
index 542c4eac943aa6088ae432b60e38903d687e6e9c..0000000000000000000000000000000000000000
--- a/third_party/libxml/src/nanohttp.c
+++ /dev/null
@@ -1,1875 +0,0 @@
-/*
- * nanohttp.c: minimalist HTTP GET implementation to fetch external subsets.
- *             focuses on size, streamability, reentrancy and portability
- *
- * This is clearly not a general purpose HTTP implementation
- * If you look for one, check:
- *         http://www.w3.org/Library/
- *
- * See Copyright for the status of this software.
- *
- * daniel@veillard.com
- */
- 
-#define NEED_SOCKETS
-#define IN_LIBXML
-#include "libxml.h"
-
-#ifdef LIBXML_HTTP_ENABLED
-#include <string.h>
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#ifdef HAVE_RESOLV_H
-#ifdef HAVE_ARPA_NAMESER_H
-#include <arpa/nameser.h>
-#endif
-#include <resolv.h>
-#endif
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h> 
-#endif
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#ifndef HAVE_POLL_H
-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif
-#else
-#include <poll.h>
-#endif
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-#ifdef SUPPORT_IP6
-#include <resolv.h>
-#endif
-#ifdef HAVE_ZLIB_H
-#include <zlib.h>
-#endif
-
-
-#ifdef VMS
-#include <stropts>
-#define XML_SOCKLEN_T unsigned int
-#define SOCKET int
-#endif
-
-#if defined(__MINGW32__) || defined(_WIN32_WCE)
-#define _WINSOCKAPI_
-#include <wsockcompat.h>
-#include <winsock2.h>
-#undef XML_SOCKLEN_T
-#define XML_SOCKLEN_T unsigned int
-#endif
-
-
-#include <libxml/globals.h>
-#include <libxml/xmlerror.h>
-#include <libxml/xmlmemory.h>
-#include <libxml/parser.h> /* for xmlStr(n)casecmp() */
-#include <libxml/nanohttp.h>
-#include <libxml/globals.h>
-#include <libxml/uri.h>
-
-/**
- * A couple portability macros
- */
-#ifndef _WINSOCKAPI_
-#if !defined(__BEOS__) || defined(__HAIKU__)
-#define closesocket(s) close(s)
-#endif
-#define SOCKET int
-#endif
-
-#ifdef __BEOS__
-#ifndef PF_INET
-#define PF_INET AF_INET
-#endif
-#endif
-
-#ifndef XML_SOCKLEN_T
-#define XML_SOCKLEN_T unsigned int
-#endif
-#ifndef SOCKET
-#define SOCKET int
-#endif
-
-#ifdef STANDALONE
-#define DEBUG_HTTP
-#define xmlStrncasecmp(a, b, n) strncasecmp((char *)a, (char *)b, n)
-#define xmlStrcasecmpi(a, b) strcasecmp((char *)a, (char *)b)
-#endif
-
-#define XML_NANO_HTTP_MAX_REDIR	10
-
-#define XML_NANO_HTTP_CHUNK	4096
-
-#define XML_NANO_HTTP_CLOSED	0
-#define XML_NANO_HTTP_WRITE	1
-#define XML_NANO_HTTP_READ	2
-#define XML_NANO_HTTP_NONE	4
-
-typedef struct xmlNanoHTTPCtxt {
-    char *protocol;	/* the protocol name */
-    char *hostname;	/* the host name */
-    int port;		/* the port */
-    char *path;		/* the path within the URL */
-    char *query;	/* the query string */
-    SOCKET fd;		/* the file descriptor for the socket */
-    int state;		/* WRITE / READ / CLOSED */
-    char *out;		/* buffer sent (zero terminated) */
-    char *outptr;	/* index within the buffer sent */
-    char *in;		/* the receiving buffer */
-    char *content;	/* the start of the content */
-    char *inptr;	/* the next byte to read from network */
-    char *inrptr;	/* the next byte to give back to the client */
-    int inlen;		/* len of the input buffer */
-    int last;		/* return code for last operation */
-    int returnValue;	/* the protocol return value */
-    int version;        /* the protocol version */
-    int ContentLength;  /* specified content length from HTTP header */
-    char *contentType;	/* the MIME type for the input */
-    char *location;	/* the new URL in case of redirect */
-    char *authHeader;	/* contents of {WWW,Proxy}-Authenticate header */
-    char *encoding;	/* encoding extracted from the contentType */
-    char *mimeType;	/* Mime-Type extracted from the contentType */
-#ifdef HAVE_ZLIB_H
-    z_stream *strm;	/* Zlib stream object */
-    int usesGzip;	/* "Content-Encoding: gzip" was detected */
-#endif
-} xmlNanoHTTPCtxt, *xmlNanoHTTPCtxtPtr;
-
-static int initialized = 0;
-static char *proxy = NULL;	 /* the proxy name if any */
-static int proxyPort;	/* the proxy port if any */
-static unsigned int timeout = 60;/* the select() timeout in seconds */
-
-static int xmlNanoHTTPFetchContent( void * ctx, char ** ptr, int * len );
-
-/**
- * xmlHTTPErrMemory:
- * @extra:  extra informations
- *
- * Handle an out of memory condition
- */
-static void
-xmlHTTPErrMemory(const char *extra)
-{
-    __xmlSimpleError(XML_FROM_HTTP, XML_ERR_NO_MEMORY, NULL, NULL, extra);
-}
-
-/**
- * A portability function
- */
-static int socket_errno(void) {
-#ifdef _WINSOCKAPI_
-    return(WSAGetLastError());
-#else
-    return(errno);
-#endif
-}
-
-#ifdef SUPPORT_IP6
-static
-int have_ipv6(void) {
-    int s;
-
-    s = socket (AF_INET6, SOCK_STREAM, 0);
-    if (s != -1) {
-	close (s);
-	return (1);
-    }
-    return (0);
-}
-#endif
-
-/**
- * xmlNanoHTTPInit:
- *
- * Initialize the HTTP protocol layer.
- * Currently it just checks for proxy informations
- */
-
-void
-xmlNanoHTTPInit(void) {
-    const char *env;
-#ifdef _WINSOCKAPI_
-    WSADATA wsaData;    
-#endif
-
-    if (initialized)
-	return;
-
-#ifdef _WINSOCKAPI_
-    if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0)
-	return;
-#endif
-
-    if (proxy == NULL) {
-	proxyPort = 80;
-	env = getenv("no_proxy");
-	if (env && ((env[0] == '*') && (env[1] == 0)))
-	    goto done;
-	env = getenv("http_proxy");
-	if (env != NULL) {
-	    xmlNanoHTTPScanProxy(env);
-	    goto done;
-	}
-	env = getenv("HTTP_PROXY");
-	if (env != NULL) {
-	    xmlNanoHTTPScanProxy(env);
-	    goto done;
-	}
-    }
-done:
-    initialized = 1;
-}
-
-/**
- * xmlNanoHTTPCleanup:
- *
- * Cleanup the HTTP protocol layer.
- */
-
-void
-xmlNanoHTTPCleanup(void) {
-    if (proxy != NULL) {
-	xmlFree(proxy);
-	proxy = NULL;
-    }
-#ifdef _WINSOCKAPI_
-    if (initialized)
-	WSACleanup();
-#endif
-    initialized = 0;
-    return;
-}
-
-/**
- * xmlNanoHTTPScanURL:
- * @ctxt:  an HTTP context
- * @URL:  The URL used to initialize the context
- *
- * (Re)Initialize an HTTP context by parsing the URL and finding
- * the protocol host port and path it indicates.
- */
-
-static void
-xmlNanoHTTPScanURL(xmlNanoHTTPCtxtPtr ctxt, const char *URL) {
-    xmlURIPtr uri;
-    /*
-     * Clear any existing data from the context
-     */
-    if (ctxt->protocol != NULL) { 
-        xmlFree(ctxt->protocol);
-	ctxt->protocol = NULL;
-    }
-    if (ctxt->hostname != NULL) { 
-        xmlFree(ctxt->hostname);
-	ctxt->hostname = NULL;
-    }
-    if (ctxt->path != NULL) { 
-        xmlFree(ctxt->path);
-	ctxt->path = NULL;
-    }
-    if (ctxt->query != NULL) { 
-        xmlFree(ctxt->query);
-	ctxt->query = NULL;
-    }
-    if (URL == NULL) return;
-
-    uri = xmlParseURIRaw(URL, 1);
-    if (uri == NULL)
-	return;
-
-    if ((uri->scheme == NULL) || (uri->server == NULL)) {
-	xmlFreeURI(uri);
-	return;
-    }
-    
-    ctxt->protocol = xmlMemStrdup(uri->scheme);
-    ctxt->hostname = xmlMemStrdup(uri->server);
-    if (uri->path != NULL)
-	ctxt->path = xmlMemStrdup(uri->path);
-    else
-	ctxt->path = xmlMemStrdup("/");
-    if (uri->query != NULL)
-	ctxt->query = xmlMemStrdup(uri->query);
-    if (uri->port != 0)
-	ctxt->port = uri->port;
-
-    xmlFreeURI(uri);
-}
-
-/**
- * xmlNanoHTTPScanProxy:
- * @URL:  The proxy URL used to initialize the proxy context
- *
- * (Re)Initialize the HTTP Proxy context by parsing the URL and finding
- * the protocol host port it indicates.
- * Should be like http://myproxy/ or http://myproxy:3128/
- * A NULL URL cleans up proxy informations.
- */
-
-void
-xmlNanoHTTPScanProxy(const char *URL) {
-    xmlURIPtr uri;
-
-    if (proxy != NULL) { 
-        xmlFree(proxy);
-	proxy = NULL;
-    }
-    proxyPort = 0;
-
-#ifdef DEBUG_HTTP
-    if (URL == NULL)
-	xmlGenericError(xmlGenericErrorContext,
-		"Removing HTTP proxy info\n");
-    else
-	xmlGenericError(xmlGenericErrorContext,
-		"Using HTTP proxy %s\n", URL);
-#endif
-    if (URL == NULL) return;
-
-    uri = xmlParseURIRaw(URL, 1);
-    if ((uri == NULL) || (uri->scheme == NULL) ||
-	(strcmp(uri->scheme, "http")) || (uri->server == NULL)) {
-	__xmlIOErr(XML_FROM_HTTP, XML_HTTP_URL_SYNTAX, "Syntax Error\n");
-	if (uri != NULL)
-	    xmlFreeURI(uri);
-	return;
-    }
-    
-    proxy = xmlMemStrdup(uri->server);
-    if (uri->port != 0)
-	proxyPort = uri->port;
-
-    xmlFreeURI(uri);
-}
-
-/**
- * xmlNanoHTTPNewCtxt:
- * @URL:  The URL used to initialize the context
- *
- * Allocate and initialize a new HTTP context.
- *
- * Returns an HTTP context or NULL in case of error.
- */
-
-static xmlNanoHTTPCtxtPtr
-xmlNanoHTTPNewCtxt(const char *URL) {
-    xmlNanoHTTPCtxtPtr ret;
-
-    ret = (xmlNanoHTTPCtxtPtr) xmlMalloc(sizeof(xmlNanoHTTPCtxt));
-    if (ret == NULL) {
-        xmlHTTPErrMemory("allocating context");
-        return(NULL);
-    }
-
-    memset(ret, 0, sizeof(xmlNanoHTTPCtxt));
-    ret->port = 80;
-    ret->returnValue = 0;
-    ret->fd = -1;
-    ret->ContentLength = -1;
-
-    xmlNanoHTTPScanURL(ret, URL);
-
-    return(ret);
-}
-
-/**
- * xmlNanoHTTPFreeCtxt:
- * @ctxt:  an HTTP context
- *
- * Frees the context after closing the connection.
- */
-
-static void
-xmlNanoHTTPFreeCtxt(xmlNanoHTTPCtxtPtr ctxt) {
-    if (ctxt == NULL) return;
-    if (ctxt->hostname != NULL) xmlFree(ctxt->hostname);
-    if (ctxt->protocol != NULL) xmlFree(ctxt->protocol);
-    if (ctxt->path != NULL) xmlFree(ctxt->path);
-    if (ctxt->query != NULL) xmlFree(ctxt->query);
-    if (ctxt->out != NULL) xmlFree(ctxt->out);
-    if (ctxt->in != NULL) xmlFree(ctxt->in);
-    if (ctxt->contentType != NULL) xmlFree(ctxt->contentType);
-    if (ctxt->encoding != NULL) xmlFree(ctxt->encoding);
-    if (ctxt->mimeType != NULL) xmlFree(ctxt->mimeType);
-    if (ctxt->location != NULL) xmlFree(ctxt->location);
-    if (ctxt->authHeader != NULL) xmlFree(ctxt->authHeader);
-#ifdef HAVE_ZLIB_H
-    if (ctxt->strm != NULL) {
-	inflateEnd(ctxt->strm);
-	xmlFree(ctxt->strm);
-    }
-#endif
-
-    ctxt->state = XML_NANO_HTTP_NONE;
-    if (ctxt->fd >= 0) closesocket(ctxt->fd);
-    ctxt->fd = -1;
-    xmlFree(ctxt);
-}
-
-/**
- * xmlNanoHTTPSend:
- * @ctxt:  an HTTP context
- *
- * Send the input needed to initiate the processing on the server side
- * Returns number of bytes sent or -1 on error.
- */
-
-static int
-xmlNanoHTTPSend(xmlNanoHTTPCtxtPtr ctxt, const char *xmt_ptr, int outlen)
-{
-    int total_sent = 0;
-#ifdef HAVE_POLL_H
-    struct pollfd p;
-#else
-    struct timeval tv;
-    fd_set wfd;
-#endif
-
-    if ((ctxt->state & XML_NANO_HTTP_WRITE) && (xmt_ptr != NULL)) {
-        while (total_sent < outlen) {
-            int nsent = send(ctxt->fd, xmt_ptr + total_sent,
-                             outlen - total_sent, 0);
-
-            if (nsent > 0)
-                total_sent += nsent;
-            else if ((nsent == -1) &&
-#if defined(EAGAIN) && EAGAIN != EWOULDBLOCK
-                     (socket_errno() != EAGAIN) &&
-#endif
-                     (socket_errno() != EWOULDBLOCK)) {
-                __xmlIOErr(XML_FROM_HTTP, 0, "send failed\n");
-                if (total_sent == 0)
-                    total_sent = -1;
-                break;
-            } else {
-                /*
-                 * No data sent
-                 * Since non-blocking sockets are used, wait for
-                 * socket to be writable or default timeout prior
-                 * to retrying.
-                 */
-#ifndef HAVE_POLL_H
-#ifndef _WINSOCKAPI_
-                if (ctxt->fd > FD_SETSIZE)
-                    return -1;
-#endif
-
-                tv.tv_sec = timeout;
-                tv.tv_usec = 0;
-                FD_ZERO(&wfd);
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable: 4018)
-#endif
-                FD_SET(ctxt->fd, &wfd);
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-                (void) select(ctxt->fd + 1, NULL, &wfd, NULL, &tv);
-#else
-                p.fd = ctxt->fd;
-                p.events = POLLOUT;
-                (void) poll(&p, 1, timeout * 1000);
-#endif /* !HAVE_POLL_H */
-            }
-        }
-    }
-
-    return total_sent;
-}
-
-/**
- * xmlNanoHTTPRecv:
- * @ctxt:  an HTTP context
- *
- * Read information coming from the HTTP connection.
- * This is a blocking call (but it blocks in select(), not read()).
- *
- * Returns the number of byte read or -1 in case of error.
- */
-
-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);
-}
-
-/**
- * xmlNanoHTTPReadLine:
- * @ctxt:  an HTTP context
- *
- * Read one line in the HTTP server output, usually for extracting
- * the HTTP protocol informations from the answer header.
- *
- * Returns a newly allocated string with a copy of the line, or NULL
- *         which indicate the end of the input.
- */
-
-static char *
-xmlNanoHTTPReadLine(xmlNanoHTTPCtxtPtr ctxt) {
-    char buf[4096];
-    char *bp = buf;
-    int	rc;
-    
-    while (bp - buf < 4095) {
-	if (ctxt->inrptr == ctxt->inptr) {
-	    if ( (rc = xmlNanoHTTPRecv(ctxt)) == 0) {
-		if (bp == buf)
-		    return(NULL);
-		else
-		    *bp = 0;
-		return(xmlMemStrdup(buf));
-	    }
-	    else if ( rc == -1 ) {
-	        return ( NULL );
-	    }
-	}
-	*bp = *ctxt->inrptr++;
-	if (*bp == '\n') {
-	    *bp = 0;
-	    return(xmlMemStrdup(buf));
-	}
-	if (*bp != '\r')
-	    bp++;
-    }
-    buf[4095] = 0;
-    return(xmlMemStrdup(buf));
-}
-
-
-/**
- * xmlNanoHTTPScanAnswer:
- * @ctxt:  an HTTP context
- * @line:  an HTTP header line
- *
- * Try to extract useful informations from the server answer.
- * We currently parse and process:
- *  - The HTTP revision/ return code
- *  - The Content-Type, Mime-Type and charset used
- *  - The Location for redirect processing.
- *
- * Returns -1 in case of failure, the file descriptor number otherwise
- */
-
-static void
-xmlNanoHTTPScanAnswer(xmlNanoHTTPCtxtPtr ctxt, const char *line) {
-    const char *cur = line;
-
-    if (line == NULL) return;
-
-    if (!strncmp(line, "HTTP/", 5)) {
-        int version = 0;
-	int ret = 0;
-
-	cur += 5;
-	while ((*cur >= '0') && (*cur <= '9')) {
-	    version *= 10;
-	    version += *cur - '0';
-	    cur++;
-	}
-	if (*cur == '.') {
-	    cur++;
-	    if ((*cur >= '0') && (*cur <= '9')) {
-		version *= 10;
-		version += *cur - '0';
-		cur++;
-	    }
-	    while ((*cur >= '0') && (*cur <= '9'))
-		cur++;
-	} else
-	    version *= 10;
-	if ((*cur != ' ') && (*cur != '\t')) return;
-	while ((*cur == ' ') || (*cur == '\t')) cur++;
-	if ((*cur < '0') || (*cur > '9')) return;
-	while ((*cur >= '0') && (*cur <= '9')) {
-	    ret *= 10;
-	    ret += *cur - '0';
-	    cur++;
-	}
-	if ((*cur != 0) && (*cur != ' ') && (*cur != '\t')) return;
-	ctxt->returnValue = ret;
-        ctxt->version = version;
-    } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"Content-Type:", 13)) {
-        const xmlChar *charset, *last, *mime;
-        cur += 13;
-	while ((*cur == ' ') || (*cur == '\t')) cur++;
-	if (ctxt->contentType != NULL)
-	    xmlFree(ctxt->contentType);
-	ctxt->contentType = xmlMemStrdup(cur);
-	mime = (const xmlChar *) cur;
-	last = mime;
-	while ((*last != 0) && (*last != ' ') && (*last != '\t') &&
-	       (*last != ';') && (*last != ','))
-	    last++;
-	if (ctxt->mimeType != NULL)
-	    xmlFree(ctxt->mimeType);
-	ctxt->mimeType = (char *) xmlStrndup(mime, last - mime);
-	charset = xmlStrstr(BAD_CAST ctxt->contentType, BAD_CAST "charset=");
-	if (charset != NULL) {
-	    charset += 8;
-	    last = charset;
-	    while ((*last != 0) && (*last != ' ') && (*last != '\t') &&
-	           (*last != ';') && (*last != ','))
-		last++;
-	    if (ctxt->encoding != NULL)
-	        xmlFree(ctxt->encoding);
-	    ctxt->encoding = (char *) xmlStrndup(charset, last - charset);
-	}
-    } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"ContentType:", 12)) {
-        const xmlChar *charset, *last, *mime;
-        cur += 12;
-	if (ctxt->contentType != NULL) return;
-	while ((*cur == ' ') || (*cur == '\t')) cur++;
-	ctxt->contentType = xmlMemStrdup(cur);
-	mime = (const xmlChar *) cur;
-	last = mime;
-	while ((*last != 0) && (*last != ' ') && (*last != '\t') &&
-	       (*last != ';') && (*last != ','))
-	    last++;
-	if (ctxt->mimeType != NULL)
-	    xmlFree(ctxt->mimeType);
-	ctxt->mimeType = (char *) xmlStrndup(mime, last - mime);
-	charset = xmlStrstr(BAD_CAST ctxt->contentType, BAD_CAST "charset=");
-	if (charset != NULL) {
-	    charset += 8;
-	    last = charset;
-	    while ((*last != 0) && (*last != ' ') && (*last != '\t') &&
-	           (*last != ';') && (*last != ','))
-		last++;
-	    if (ctxt->encoding != NULL)
-	        xmlFree(ctxt->encoding);
-	    ctxt->encoding = (char *) xmlStrndup(charset, last - charset);
-	}
-    } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"Location:", 9)) {
-        cur += 9;
-	while ((*cur == ' ') || (*cur == '\t')) cur++;
-	if (ctxt->location != NULL)
-	    xmlFree(ctxt->location);
-	if (*cur == '/') {
-	    xmlChar *tmp_http = xmlStrdup(BAD_CAST "http://");
-	    xmlChar *tmp_loc = 
-	        xmlStrcat(tmp_http, (const xmlChar *) ctxt->hostname);
-	    ctxt->location = 
-	        (char *) xmlStrcat (tmp_loc, (const xmlChar *) cur);
-	} else {
-	    ctxt->location = xmlMemStrdup(cur);
-	}
-    } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"WWW-Authenticate:", 17)) {
-        cur += 17;
-	while ((*cur == ' ') || (*cur == '\t')) cur++;
-	if (ctxt->authHeader != NULL)
-	    xmlFree(ctxt->authHeader);
-	ctxt->authHeader = xmlMemStrdup(cur);
-    } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"Proxy-Authenticate:", 19)) {
-        cur += 19;
-	while ((*cur == ' ') || (*cur == '\t')) cur++;
-	if (ctxt->authHeader != NULL)
-	    xmlFree(ctxt->authHeader);
-	ctxt->authHeader = xmlMemStrdup(cur);
-#ifdef HAVE_ZLIB_H
-    } else if ( !xmlStrncasecmp( BAD_CAST line, BAD_CAST"Content-Encoding:", 17) ) {
-	cur += 17;
-	while ((*cur == ' ') || (*cur == '\t')) cur++;
-	if ( !xmlStrncasecmp( BAD_CAST cur, BAD_CAST"gzip", 4) ) {
-	    ctxt->usesGzip = 1;
-
-	    ctxt->strm = xmlMalloc(sizeof(z_stream));
-
-	    if (ctxt->strm != NULL) {
-		ctxt->strm->zalloc = Z_NULL;
-		ctxt->strm->zfree = Z_NULL;
-		ctxt->strm->opaque = Z_NULL;
-		ctxt->strm->avail_in = 0;
-		ctxt->strm->next_in = Z_NULL;
-
-		inflateInit2( ctxt->strm, 31 );
-	    }
-	}
-#endif
-    } else if ( !xmlStrncasecmp( BAD_CAST line, BAD_CAST"Content-Length:", 15) ) {
-	cur += 15;
-	ctxt->ContentLength = strtol( cur, NULL, 10 );
-    }
-}
-
-/**
- * xmlNanoHTTPConnectAttempt:
- * @addr:  a socket address structure
- *
- * Attempt a connection to the given IP:port endpoint. It forces
- * non-blocking semantic on the socket, and allow 60 seconds for
- * the host to answer.
- *
- * Returns -1 in case of failure, the file descriptor number otherwise
- */
-
-static int
-xmlNanoHTTPConnectAttempt(struct sockaddr *addr)
-{
-#ifndef HAVE_POLL_H
-    fd_set wfd;
-#ifdef _WINSOCKAPI_
-    fd_set xfd;
-#endif
-    struct timeval tv;
-#else /* !HAVE_POLL_H */
-    struct pollfd p;
-#endif /* !HAVE_POLL_H */
-    int status;
-
-    int addrlen;
-
-    SOCKET s;
-
-#ifdef SUPPORT_IP6
-    if (addr->sa_family == AF_INET6) {
-        s = socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP);
-        addrlen = sizeof(struct sockaddr_in6);
-    } else
-#endif
-    {
-        s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
-        addrlen = sizeof(struct sockaddr_in);
-    }
-    if (s == -1) {
-#ifdef DEBUG_HTTP
-        perror("socket");
-#endif
-        __xmlIOErr(XML_FROM_HTTP, 0, "socket failed\n");
-        return (-1);
-    }
-#ifdef _WINSOCKAPI_
-    {
-        u_long one = 1;
-
-        status = ioctlsocket(s, FIONBIO, &one) == SOCKET_ERROR ? -1 : 0;
-    }
-#else /* _WINSOCKAPI_ */
-#if defined(VMS)
-    {
-        int enable = 1;
-
-        status = ioctl(s, FIONBIO, &enable);
-    }
-#else /* VMS */
-#if defined(__BEOS__) && !defined(__HAIKU__)
-    {
-        bool noblock = true;
-
-        status =
-            setsockopt(s, SOL_SOCKET, SO_NONBLOCK, &noblock,
-                       sizeof(noblock));
-    }
-#else /* __BEOS__ */
-    if ((status = fcntl(s, F_GETFL, 0)) != -1) {
-#ifdef O_NONBLOCK
-        status |= O_NONBLOCK;
-#else /* O_NONBLOCK */
-#ifdef F_NDELAY
-        status |= F_NDELAY;
-#endif /* F_NDELAY */
-#endif /* !O_NONBLOCK */
-        status = fcntl(s, F_SETFL, status);
-    }
-    if (status < 0) {
-#ifdef DEBUG_HTTP
-        perror("nonblocking");
-#endif
-        __xmlIOErr(XML_FROM_HTTP, 0, "error setting non-blocking IO\n");
-        closesocket(s);
-        return (-1);
-    }
-#endif /* !__BEOS__ */
-#endif /* !VMS */
-#endif /* !_WINSOCKAPI_ */
-
-    if (connect(s, addr, addrlen) == -1) {
-        switch (socket_errno()) {
-            case EINPROGRESS:
-            case EWOULDBLOCK:
-                break;
-            default:
-                __xmlIOErr(XML_FROM_HTTP, 0,
-                           "error connecting to HTTP server");
-                closesocket(s);
-                return (-1);
-        }
-    }
-#ifndef HAVE_POLL_H
-    tv.tv_sec = timeout;
-    tv.tv_usec = 0;
-
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable: 4018)
-#endif
-#ifndef _WINSOCKAPI_
-    if (s > FD_SETSIZE)
-        return -1;
-#endif
-    FD_ZERO(&wfd);
-    FD_SET(s, &wfd);
-
-#ifdef _WINSOCKAPI_
-    FD_ZERO(&xfd);
-    FD_SET(s, &xfd);
-
-    switch (select(s + 1, NULL, &wfd, &xfd, &tv))
-#else
-    switch (select(s + 1, NULL, &wfd, NULL, &tv))
-#endif
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-
-#else /* !HAVE_POLL_H */
-    p.fd = s;
-    p.events = POLLOUT;
-    switch (poll(&p, 1, timeout * 1000))
-#endif /* !HAVE_POLL_H */
-
-    {
-        case 0:
-            /* Time out */
-            __xmlIOErr(XML_FROM_HTTP, 0, "Connect attempt timed out");
-            closesocket(s);
-            return (-1);
-        case -1:
-            /* Ermm.. ?? */
-            __xmlIOErr(XML_FROM_HTTP, 0, "Connect failed");
-            closesocket(s);
-            return (-1);
-    }
-
-#ifndef HAVE_POLL_H
-    if (FD_ISSET(s, &wfd)
-#ifdef _WINSOCKAPI_
-        || FD_ISSET(s, &xfd)
-#endif
-        )
-#else /* !HAVE_POLL_H */
-    if (p.revents == POLLOUT)
-#endif /* !HAVE_POLL_H */
-    {
-        XML_SOCKLEN_T len;
-
-        len = sizeof(status);
-#ifdef SO_ERROR
-        if (getsockopt(s, SOL_SOCKET, SO_ERROR, (char *) &status, &len) <
-            0) {
-            /* Solaris error code */
-            __xmlIOErr(XML_FROM_HTTP, 0, "getsockopt failed\n");
-            return (-1);
-        }
-#endif
-        if (status) {
-            __xmlIOErr(XML_FROM_HTTP, 0,
-                       "Error connecting to remote host");
-            closesocket(s);
-            errno = status;
-            return (-1);
-        }
-    } else {
-        /* pbm */
-        __xmlIOErr(XML_FROM_HTTP, 0, "select failed\n");
-        closesocket(s);
-        return (-1);
-    }
-
-    return (s);
-}
-
-/**
- * xmlNanoHTTPConnectHost:
- * @host:  the host name
- * @port:  the port number
- *
- * Attempt a connection to the given host:port endpoint. It tries
- * the multiple IP provided by the DNS if available.
- *
- * Returns -1 in case of failure, the file descriptor number otherwise
- */
-
-static int
-xmlNanoHTTPConnectHost(const char *host, int port)
-{
-    struct hostent *h;
-    struct sockaddr *addr = NULL;
-    struct in_addr ia;
-    struct sockaddr_in sockin;
-
-#ifdef SUPPORT_IP6
-    struct in6_addr ia6;
-    struct sockaddr_in6 sockin6;
-#endif
-    int i;
-    int s;
-
-    memset (&sockin, 0, sizeof(sockin));
-#ifdef SUPPORT_IP6
-    memset (&sockin6, 0, sizeof(sockin6));
-#endif
-
-#if !defined(HAVE_GETADDRINFO) && defined(SUPPORT_IP6) && defined(RES_USE_INET6)
-    if (have_ipv6 ())
-    {
-	if (!(_res.options & RES_INIT))
-	    res_init();
-	_res.options |= RES_USE_INET6;
-    }
-#endif
-
-#if defined(HAVE_GETADDRINFO) && defined(SUPPORT_IP6) && !defined(_WIN32)
-    if (have_ipv6 ())
-#endif
-#if defined(HAVE_GETADDRINFO) && (defined(SUPPORT_IP6) || defined(_WIN32))
-    {
-	int status;
-	struct addrinfo hints, *res, *result;
-
-	result = NULL;
-	memset (&hints, 0,sizeof(hints));
-	hints.ai_socktype = SOCK_STREAM;
-
-	status = getaddrinfo (host, NULL, &hints, &result);
-	if (status) {
-	    __xmlIOErr(XML_FROM_HTTP, 0, "getaddrinfo failed\n");
-	    return (-1);
-	}
-
-	for (res = result; res; res = res->ai_next) {
-	    if (res->ai_family == AF_INET) {
-		if (res->ai_addrlen > sizeof(sockin)) {
-		    __xmlIOErr(XML_FROM_HTTP, 0, "address size mismatch\n");
-		    freeaddrinfo (result);
-		    return (-1);
-		}
-		memcpy (&sockin, res->ai_addr, res->ai_addrlen);
-		sockin.sin_port = htons (port);
-		addr = (struct sockaddr *)&sockin;
-#ifdef SUPPORT_IP6
-	    } else if (have_ipv6 () && (res->ai_family == AF_INET6)) {
-		if (res->ai_addrlen > sizeof(sockin6)) {
-		    __xmlIOErr(XML_FROM_HTTP, 0, "address size mismatch\n");
-		    freeaddrinfo (result);
-		    return (-1);
-		}
-		memcpy (&sockin6, res->ai_addr, res->ai_addrlen);
-		sockin6.sin6_port = htons (port);
-		addr = (struct sockaddr *)&sockin6;
-#endif
-	    } else
-		continue;              /* for */
-
-	    s = xmlNanoHTTPConnectAttempt (addr);
-	    if (s != -1) {
-		freeaddrinfo (result);
-		return (s);
-	    }
-	}
-
-	if (result)
-	    freeaddrinfo (result);
-    }
-#endif
-#if defined(HAVE_GETADDRINFO) && defined(SUPPORT_IP6) && !defined(_WIN32)
-    else
-#endif
-#if !defined(HAVE_GETADDRINFO) || !defined(_WIN32)
-    {
-	h = gethostbyname (host);
-	if (h == NULL) {
-
-/*
- * Okay, I got fed up by the non-portability of this error message
- * extraction code. it work on Linux, if it work on your platform
- * and one want to enable it, send me the defined(foobar) needed
- */
-#if defined(HAVE_NETDB_H) && defined(HOST_NOT_FOUND) && defined(linux)
-	    const char *h_err_txt = "";
-
-	    switch (h_errno) {
-		case HOST_NOT_FOUND:
-		    h_err_txt = "Authoritive host not found";
-		    break;
-
-		case TRY_AGAIN:
-		    h_err_txt =
-			"Non-authoritive host not found or server failure.";
-		    break;
-
-		case NO_RECOVERY:
-		    h_err_txt =
-			"Non-recoverable errors:  FORMERR, REFUSED, or NOTIMP.";
-		    break;
-
-		case NO_ADDRESS:
-		    h_err_txt =
-			"Valid name, no data record of requested type.";
-		    break;
-
-		default:
-		    h_err_txt = "No error text defined.";
-		    break;
-	    }
-	    __xmlIOErr(XML_FROM_HTTP, 0, h_err_txt);
-#else
-	    __xmlIOErr(XML_FROM_HTTP, 0, "Failed to resolve host");
-#endif
-	    return (-1);
-	}
-
-	for (i = 0; h->h_addr_list[i]; i++) {
-	    if (h->h_addrtype == AF_INET) {
-		/* A records (IPv4) */
-		if ((unsigned int) h->h_length > sizeof(ia)) {
-		    __xmlIOErr(XML_FROM_HTTP, 0, "address size mismatch\n");
-		    return (-1);
-		}
-		memcpy (&ia, h->h_addr_list[i], h->h_length);
-		sockin.sin_family = h->h_addrtype;
-		sockin.sin_addr = ia;
-		sockin.sin_port = (u_short)htons ((unsigned short)port);
-		addr = (struct sockaddr *) &sockin;
-#ifdef SUPPORT_IP6
-	    } else if (have_ipv6 () && (h->h_addrtype == AF_INET6)) {
-		/* AAAA records (IPv6) */
-		if ((unsigned int) h->h_length > sizeof(ia6)) {
-		    __xmlIOErr(XML_FROM_HTTP, 0, "address size mismatch\n");
-		    return (-1);
-		}
-		memcpy (&ia6, h->h_addr_list[i], h->h_length);
-		sockin6.sin6_family = h->h_addrtype;
-		sockin6.sin6_addr = ia6;
-		sockin6.sin6_port = htons (port);
-		addr = (struct sockaddr *) &sockin6;
-#endif
-	    } else
-		break;              /* for */
-
-	    s = xmlNanoHTTPConnectAttempt (addr);
-	    if (s != -1)
-		return (s);
-	}
-    }
-#endif
-
-#ifdef DEBUG_HTTP
-    xmlGenericError(xmlGenericErrorContext,
-                    "xmlNanoHTTPConnectHost:  unable to connect to '%s'.\n",
-                    host);
-#endif
-    return (-1);
-}
-
-
-/**
- * xmlNanoHTTPOpen:
- * @URL:  The URL to load
- * @contentType:  if available the Content-Type information will be
- *                returned at that location
- *
- * This function try to open a connection to the indicated resource
- * via HTTP GET.
- *
- * Returns NULL in case of failure, otherwise a request handler.
- *     The contentType, if provided must be freed by the caller
- */
-
-void*
-xmlNanoHTTPOpen(const char *URL, char **contentType) {
-    if (contentType != NULL) *contentType = NULL;
-    return(xmlNanoHTTPMethod(URL, NULL, NULL, contentType, NULL, 0));
-}
-
-/**
- * xmlNanoHTTPOpenRedir:
- * @URL:  The URL to load
- * @contentType:  if available the Content-Type information will be
- *                returned at that location
- * @redir: if available the redirected URL will be returned
- *
- * This function try to open a connection to the indicated resource
- * via HTTP GET.
- *
- * Returns NULL in case of failure, otherwise a request handler.
- *     The contentType, if provided must be freed by the caller
- */
-
-void*
-xmlNanoHTTPOpenRedir(const char *URL, char **contentType, char **redir) {
-    if (contentType != NULL) *contentType = NULL;
-    if (redir != NULL) *redir = NULL;
-    return(xmlNanoHTTPMethodRedir(URL, NULL, NULL, contentType, redir, NULL,0));
-}
-
-/**
- * xmlNanoHTTPRead:
- * @ctx:  the HTTP context
- * @dest:  a buffer
- * @len:  the buffer length
- *
- * This function tries to read @len bytes from the existing HTTP connection
- * and saves them in @dest. This is a blocking call.
- *
- * Returns the number of byte read. 0 is an indication of an end of connection.
- *         -1 indicates a parameter error.
- */
-int
-xmlNanoHTTPRead(void *ctx, void *dest, int len) {
-    xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
-#ifdef HAVE_ZLIB_H
-    int bytes_read = 0;
-    int orig_avail_in;
-    int z_ret;
-#endif
-
-    if (ctx == NULL) return(-1);
-    if (dest == NULL) return(-1);
-    if (len <= 0) return(0);
-
-#ifdef HAVE_ZLIB_H
-    if (ctxt->usesGzip == 1) {
-        if (ctxt->strm == NULL) return(0);
- 
-        ctxt->strm->next_out = dest;
-        ctxt->strm->avail_out = len;
-	ctxt->strm->avail_in = ctxt->inptr - ctxt->inrptr;
-
-        while (ctxt->strm->avail_out > 0 &&
-	       (ctxt->strm->avail_in > 0 || xmlNanoHTTPRecv(ctxt) > 0)) {
-            orig_avail_in = ctxt->strm->avail_in =
-			    ctxt->inptr - ctxt->inrptr - bytes_read;
-            ctxt->strm->next_in = BAD_CAST (ctxt->inrptr + bytes_read);
-
-            z_ret = inflate(ctxt->strm, Z_NO_FLUSH);
-            bytes_read += orig_avail_in - ctxt->strm->avail_in;
-
-            if (z_ret != Z_OK) break;
-	}
-
-        ctxt->inrptr += bytes_read;
-        return(len - ctxt->strm->avail_out);
-    }
-#endif
-
-    while (ctxt->inptr - ctxt->inrptr < len) {
-        if (xmlNanoHTTPRecv(ctxt) <= 0) break;
-    }
-    if (ctxt->inptr - ctxt->inrptr < len)
-        len = ctxt->inptr - ctxt->inrptr;
-    memcpy(dest, ctxt->inrptr, len);
-    ctxt->inrptr += len;
-    return(len);
-}
-
-/**
- * xmlNanoHTTPClose:
- * @ctx:  the HTTP context
- *
- * This function closes an HTTP context, it ends up the connection and
- * free all data related to it.
- */
-void
-xmlNanoHTTPClose(void *ctx) {
-    xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
-
-    if (ctx == NULL) return;
-
-    xmlNanoHTTPFreeCtxt(ctxt);
-}
-
-/**
- * xmlNanoHTTPMethodRedir:
- * @URL:  The URL to load
- * @method:  the HTTP method to use
- * @input:  the input string if any
- * @contentType:  the Content-Type information IN and OUT
- * @redir:  the redirected URL OUT
- * @headers:  the extra headers
- * @ilen:  input length
- *
- * This function try to open a connection to the indicated resource
- * via HTTP using the given @method, adding the given extra headers
- * and the input buffer for the request content.
- *
- * Returns NULL in case of failure, otherwise a request handler.
- *     The contentType, or redir, if provided must be freed by the caller
- */
-
-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 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)
-	/* reserve for string plus 'Content-Type: \r\n" */
-	blen += strlen(*contentType) + 16;
-    if (ctxt->query != NULL)
-	/* 1 for '?' */
-	blen += strlen(ctxt->query) + 1;
-    blen += strlen(method) + strlen(ctxt->path) + 24;
-#ifdef HAVE_ZLIB_H
-    /* reserve for possible 'Accept-Encoding: gzip' string */
-    blen += 23;
-#endif
-    if (ctxt->port != 80) {
-	/* reserve space for ':xxxxx', incl. potential proxy */
-	if (proxy)
-	    blen += 12;
-	else
-	    blen += 6;
-    }
-    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);
-
-    if (ctxt->port == 80) {
-        p += snprintf( p, blen - (p - bp), " HTTP/1.0\r\nHost: %s\r\n", 
-		    ctxt->hostname);
-    } else {
-        p += snprintf( p, blen - (p - bp), " HTTP/1.0\r\nHost: %s:%d\r\n",
-		    ctxt->hostname, ctxt->port);
-    }
-
-#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;
-
-    while ((p = xmlNanoHTTPReadLine(ctxt)) != NULL) {
-        if (*p == 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);
-}
-
-/**
- * xmlNanoHTTPMethod:
- * @URL:  The URL to load
- * @method:  the HTTP method to use
- * @input:  the input string if any
- * @contentType:  the Content-Type information IN and OUT
- * @headers:  the extra headers
- * @ilen:  input length
- *
- * This function try to open a connection to the indicated resource
- * via HTTP using the given @method, adding the given extra headers
- * and the input buffer for the request content.
- *
- * Returns NULL in case of failure, otherwise a request handler.
- *     The contentType, if provided must be freed by the caller
- */
-
-void*
-xmlNanoHTTPMethod(const char *URL, const char *method, const char *input,
-                  char **contentType, const char *headers, int ilen) {
-    return(xmlNanoHTTPMethodRedir(URL, method, input, contentType,
-		                  NULL, headers, ilen));
-}
-
-/**
- * xmlNanoHTTPFetch:
- * @URL:  The URL to load
- * @filename:  the filename where the content should be saved
- * @contentType:  if available the Content-Type information will be
- *                returned at that location
- *
- * This function try to fetch the indicated resource via HTTP GET
- * and save it's content in the file.
- *
- * Returns -1 in case of failure, 0 incase of success. The contentType,
- *     if provided must be freed by the caller
- */
-int
-xmlNanoHTTPFetch(const char *URL, const char *filename, char **contentType) {
-    void *ctxt = NULL;
-    char *buf = NULL;
-    int fd;
-    int len;
-    
-    if (filename == NULL) return(-1);
-    ctxt = xmlNanoHTTPOpen(URL, contentType);
-    if (ctxt == NULL) return(-1);
-
-    if (!strcmp(filename, "-")) 
-        fd = 0;
-    else {
-        fd = open(filename, O_CREAT | O_WRONLY, 00644);
-	if (fd < 0) {
-	    xmlNanoHTTPClose(ctxt);
-	    if ((contentType != NULL) && (*contentType != NULL)) {
-	        xmlFree(*contentType);
-		*contentType = NULL;
-	    }
-	    return(-1);
-	}
-    }
-
-    xmlNanoHTTPFetchContent( ctxt, &buf, &len );
-    if ( len > 0 ) {
-	write(fd, buf, len);
-    }
-
-    xmlNanoHTTPClose(ctxt);
-    close(fd);
-    return(0);
-}
-
-#ifdef LIBXML_OUTPUT_ENABLED
-/**
- * xmlNanoHTTPSave:
- * @ctxt:  the HTTP context
- * @filename:  the filename where the content should be saved
- *
- * This function saves the output of the HTTP transaction to a file
- * It closes and free the context at the end
- *
- * Returns -1 in case of failure, 0 incase of success.
- */
-int
-xmlNanoHTTPSave(void *ctxt, const char *filename) {
-    char *buf = NULL;
-    int fd;
-    int len;
-    
-    if ((ctxt == NULL) || (filename == NULL)) return(-1);
-
-    if (!strcmp(filename, "-")) 
-        fd = 0;
-    else {
-        fd = open(filename, O_CREAT | O_WRONLY, 0666);
-	if (fd < 0) {
-	    xmlNanoHTTPClose(ctxt);
-	    return(-1);
-	}
-    }
-
-    xmlNanoHTTPFetchContent( ctxt, &buf, &len );
-    if ( len > 0 ) {
-	write(fd, buf, len);
-    }
-
-    xmlNanoHTTPClose(ctxt);
-    close(fd);
-    return(0);
-}
-#endif /* LIBXML_OUTPUT_ENABLED */
-
-/**
- * xmlNanoHTTPReturnCode:
- * @ctx:  the HTTP context
- *
- * Get the latest HTTP return code received
- *
- * Returns the HTTP return code for the request.
- */
-int
-xmlNanoHTTPReturnCode(void *ctx) {
-    xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
-
-    if (ctxt == NULL) return(-1);
-
-    return(ctxt->returnValue);
-}
-
-/**
- * xmlNanoHTTPAuthHeader:
- * @ctx:  the HTTP context
- *
- * Get the authentication header of an HTTP context
- *
- * Returns the stashed value of the WWW-Authenticate or Proxy-Authenticate
- * header.
- */
-const char *
-xmlNanoHTTPAuthHeader(void *ctx) {
-    xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
-
-    if (ctxt == NULL) return(NULL);
-
-    return(ctxt->authHeader);
-}
-
-/**
- * xmlNanoHTTPContentLength:
- * @ctx:  the HTTP context
- *
- * Provides the specified content length from the HTTP header.
- *
- * Return the specified content length from the HTTP header.  Note that
- * a value of -1 indicates that the content length element was not included in
- * the response header.
- */
-int
-xmlNanoHTTPContentLength( void * ctx ) {
-    xmlNanoHTTPCtxtPtr	ctxt = (xmlNanoHTTPCtxtPtr)ctx;
-
-    return ( ( ctxt == NULL ) ? -1 : ctxt->ContentLength );
-}
-
-/**
- * xmlNanoHTTPRedir:
- * @ctx:  the HTTP context
- *
- * Provides the specified redirection URL if available from the HTTP header.
- *
- * Return the specified redirection URL or NULL if not redirected.
- */
-const char *
-xmlNanoHTTPRedir( void * ctx ) {
-    xmlNanoHTTPCtxtPtr	ctxt = (xmlNanoHTTPCtxtPtr)ctx;
-
-    return ( ( ctxt == NULL ) ? NULL : ctxt->location );
-}
-
-/**
- * xmlNanoHTTPEncoding:
- * @ctx:  the HTTP context
- *
- * Provides the specified encoding if specified in the HTTP headers.
- *
- * Return the specified encoding or NULL if not available
- */
-const char *
-xmlNanoHTTPEncoding( void * ctx ) {
-    xmlNanoHTTPCtxtPtr	ctxt = (xmlNanoHTTPCtxtPtr)ctx;
-
-    return ( ( ctxt == NULL ) ? NULL : ctxt->encoding );
-}
-
-/**
- * xmlNanoHTTPMimeType:
- * @ctx:  the HTTP context
- *
- * Provides the specified Mime-Type if specified in the HTTP headers.
- *
- * Return the specified Mime-Type or NULL if not available
- */
-const char *
-xmlNanoHTTPMimeType( void * ctx ) {
-    xmlNanoHTTPCtxtPtr	ctxt = (xmlNanoHTTPCtxtPtr)ctx;
-
-    return ( ( ctxt == NULL ) ? NULL : ctxt->mimeType );
-}
-
-/**
- * xmlNanoHTTPFetchContent:
- * @ctx:  the HTTP context
- * @ptr:  pointer to set to the content buffer.
- * @len:  integer pointer to hold the length of the content
- *
- * Check if all the content was read
- *
- * Returns 0 if all the content was read and available, returns
- * -1 if received content length was less than specified or an error 
- * occurred.
- */
-static int
-xmlNanoHTTPFetchContent( void * ctx, char ** ptr, int * len ) {
-    xmlNanoHTTPCtxtPtr	ctxt = (xmlNanoHTTPCtxtPtr)ctx;
-
-    int			rc = 0;
-    int			cur_lgth;
-    int			rcvd_lgth;
-    int			dummy_int;
-    char *		dummy_ptr = NULL;
-
-    /*  Dummy up return input parameters if not provided  */
-
-    if ( len == NULL )
-        len = &dummy_int;
-
-    if ( ptr == NULL )
-        ptr = &dummy_ptr;
-
-    /*  But can't work without the context pointer  */
-
-    if ( ( ctxt == NULL ) || ( ctxt->content == NULL ) ) {
-        *len = 0;
-	*ptr = NULL;
-	return ( -1 );
-    }
-
-    rcvd_lgth = ctxt->inptr - ctxt->content;
-
-    while ( (cur_lgth = xmlNanoHTTPRecv( ctxt )) > 0 ) {
-
-	rcvd_lgth += cur_lgth;
-	if ( (ctxt->ContentLength > 0) && (rcvd_lgth >= ctxt->ContentLength) )
-	    break;
-    }
-
-    *ptr = ctxt->content;
-    *len = rcvd_lgth;
-
-    if ( ( ctxt->ContentLength > 0 ) && ( rcvd_lgth < ctxt->ContentLength ) )
-        rc = -1;
-    else if ( rcvd_lgth == 0 )
-	rc = -1;
-
-    return ( rc );
-}
-
-#ifdef STANDALONE
-int main(int argc, char **argv) {
-    char *contentType = NULL;
-
-    if (argv[1] != NULL) {
-	if (argv[2] != NULL) 
-	    xmlNanoHTTPFetch(argv[1], argv[2], &contentType);
-        else
-	    xmlNanoHTTPFetch(argv[1], "-", &contentType);
-	if (contentType != NULL) xmlFree(contentType);
-    } else {
-        xmlGenericError(xmlGenericErrorContext,
-		"%s: minimal HTTP GET implementation\n", argv[0]);
-        xmlGenericError(xmlGenericErrorContext,
-		"\tusage %s [ URL [ filename ] ]\n", argv[0]);
-    }
-    xmlNanoHTTPCleanup();
-    xmlMemoryDump();
-    return(0);
-}
-#endif /* STANDALONE */
-#else /* !LIBXML_HTTP_ENABLED */
-#ifdef STANDALONE
-#include <stdio.h>
-int main(int argc, char **argv) {
-    xmlGenericError(xmlGenericErrorContext,
-	    "%s : HTTP support not compiled in\n", argv[0]);
-    return(0);
-}
-#endif /* STANDALONE */
-#endif /* LIBXML_HTTP_ENABLED */
-#define bottom_nanohttp
-#include "elfgcchack.h"