#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
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef SUPPORT_IP6
#include <resolv.h>
#endif
#ifdef VMS
#include <stropts>
#define SOCKLEN_T unsigned int
#define SOCKET int
#endif
#ifdef __MINGW32__
#define _WINSOCKAPI_
#include <wsockcompat.h>
#include <winsock2.h>
#undef SOCKLEN_T
#define SOCKLEN_T unsigned int
#endif
#include <libxml/globals.h>
#include <libxml/xmlerror.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/nanohttp.h>
#include <libxml/globals.h>
#include <libxml/uri.h>
#ifndef _WINSOCKAPI_
#ifndef __BEOS__
#define closesocket(s) close(s)
#endif
#define SOCKET int
#endif
#ifdef __BEOS__
#ifndef PF_INET
#define PF_INET AF_INET
#endif
#endif
#ifndef SOCKLEN_T
#define 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;
char *hostname;
int port;
char *path;
SOCKET fd;
int state;
char *out;
char *outptr;
char *in;
char *content;
char *inptr;
char *inrptr;
int inlen;
int last;
int returnValue;
int ContentLength;
char *contentType;
char *location;
char *authHeader;
char *encoding;
char *mimeType;
} xmlNanoHTTPCtxt, *xmlNanoHTTPCtxtPtr;
static int initialized = 0;
static char *proxy = NULL;
static int proxyPort;
static unsigned int timeout = 60;
int xmlNanoHTTPFetchContent( void * ctx, char ** ptr, int * len );
int xmlNanoHTTPContentLength( void * ctx );
static void
xmlHTTPErrMemory(const char *extra)
{
__xmlSimpleError(XML_FROM_HTTP, XML_ERR_NO_MEMORY, NULL, NULL, extra);
}
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
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 != NULL)
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;
}
void
xmlNanoHTTPCleanup(void) {
if (proxy != NULL)
xmlFree(proxy);
#ifdef _WINSOCKAPI_
if (initialized)
WSACleanup();
#endif
initialized = 0;
return;
}
static void
xmlNanoHTTPScanURL(xmlNanoHTTPCtxtPtr ctxt, const char *URL) {
const char *cur = URL;
char buf[4096];
int indx = 0;
const int indxMax = 4096 - 1;
int port = 0;
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 (URL == NULL) return;
buf[indx] = 0;
while ((*cur != 0) && (indx < indxMax)) {
if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) {
buf[indx] = 0;
ctxt->protocol = xmlMemStrdup(buf);
indx = 0;
cur += 3;
break;
}
buf[indx++] = *cur++;
}
if (*cur == 0) return;
buf[indx] = 0;
while (indx < indxMax) {
if ((strchr (cur, '[') && !strchr (cur, ']')) ||
(!strchr (cur, '[') && strchr (cur, ']'))) {
__xmlIOErr(XML_FROM_HTTP, XML_HTTP_URL_SYNTAX,
"Syntax Error\n");
return;
}
if (cur[0] == '[') {
cur++;
while ((cur[0] != ']') && (indx < indxMax))
buf[indx++] = *cur++;
if (!strchr (buf, ':')) {
__xmlIOErr(XML_FROM_HTTP, XML_HTTP_USE_IP,
"Use [IPv6]/IPv4 format\n");
return;
}
buf[indx] = 0;
ctxt->hostname = xmlMemStrdup (buf);
indx = 0;
cur += 1;
if (cur[0] == ':') {
cur++;
while (*cur >= '0' && *cur <= '9') {
port *= 10;
port += *cur - '0';
cur++;
}
if (port != 0) ctxt->port = port;
while ((cur[0] != '/') && (*cur != 0))
cur++;
}
break;
}
else {
if (cur[0] == ':') {
buf[indx] = 0;
ctxt->hostname = xmlMemStrdup (buf);
indx = 0;
cur += 1;
while ((*cur >= '0') && (*cur <= '9')) {
port *= 10;
port += *cur - '0';
cur++;
}
if (port != 0) ctxt->port = port;
while ((cur[0] != '/') && (*cur != 0))
cur++;
break;
}
if ((*cur == '/') || (*cur == 0)) {
buf[indx] = 0;
ctxt->hostname = xmlMemStrdup (buf);
indx = 0;
break;
}
}
buf[indx++] = *cur++;
}
if (*cur == 0)
ctxt->path = xmlMemStrdup("/");
else {
indx = 0;
buf[indx] = 0;
while ((*cur != 0) && (indx < indxMax))
buf[indx++] = *cur++;
buf[indx] = 0;
ctxt->path = xmlMemStrdup(buf);
}
}
void
xmlNanoHTTPScanProxy(const char *URL) {
const char *cur = URL;
char buf[4096];
int indx = 0;
const int indxMax = 4096 - 1;
int port = 0;
if (proxy != NULL) {
xmlFree(proxy);
proxy = NULL;
}
if (proxyPort != 0) {
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;
buf[indx] = 0;
while ((*cur != 0) && (indx < indxMax)) {
if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) {
buf[indx] = 0;
indx = 0;
cur += 3;
break;
}
buf[indx++] = *cur++;
}
if (*cur == 0) return;
buf[indx] = 0;
while (indx < indxMax) {
if ((strchr (cur, '[') && !strchr (cur, ']')) ||
(!strchr (cur, '[') && strchr (cur, ']'))) {
__xmlIOErr(XML_FROM_HTTP, XML_HTTP_URL_SYNTAX, "Syntax Error\n");
return;
}
if (cur[0] == '[') {
cur++;
while ((cur[0] != ']') && (indx < indxMax))
buf[indx++] = *cur++;
if (!strchr (buf, ':')) {
__xmlIOErr(XML_FROM_HTTP, XML_HTTP_USE_IP,
"Use [IPv6]/IPv4 format\n");
return;
}
buf[indx] = 0;
proxy = xmlMemStrdup (buf);
indx = 0;
cur += 1;
if (cur[0] == ':') {
cur++;
while (*cur >= '0' && *cur <= '9') {
port *= 10;
port += *cur - '0';
cur++;
}
if (port != 0) proxyPort = port;
while ((cur[0] != '/') && (*cur != 0))
cur ++;
}
break;
}
else {
if (cur[0] == ':') {
buf[indx] = 0;
proxy = xmlMemStrdup (buf);
indx = 0;
cur += 1;
while ((*cur >= '0') && (*cur <= '9')) {
port *= 10;
port += *cur - '0';
cur++;
}
if (port != 0) proxyPort = port;
while ((cur[0] != '/') && (*cur != 0))
cur++;
break;
}
if ((*cur == '/') || (*cur == 0)) {
buf[indx] = 0;
proxy = xmlMemStrdup (buf);
indx = 0;
break;
}
}
buf[indx++] = *cur++;
}
}
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);
}
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->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);
ctxt->state = XML_NANO_HTTP_NONE;
if (ctxt->fd >= 0) closesocket(ctxt->fd);
ctxt->fd = -1;
xmlFree(ctxt);
}
static int
xmlNanoHTTPSend(xmlNanoHTTPCtxtPtr ctxt, const char * xmt_ptr, int outlen) {
int total_sent = 0;
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 {
struct timeval tv;
fd_set wfd;
tv.tv_sec = timeout;
tv.tv_usec = 0;
FD_ZERO( &wfd );
FD_SET( ctxt->fd, &wfd );
(void)select( ctxt->fd + 1, NULL, &wfd, NULL, &tv );
}
}
}
return total_sent;
}
static int
xmlNanoHTTPRecv(xmlNanoHTTPCtxtPtr ctxt) {
fd_set rfd;
struct timeval tv;
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);
}
}
tv.tv_sec = timeout;
tv.tv_usec = 0;
FD_ZERO(&rfd);
FD_SET(ctxt->fd, &rfd);
if ( (select(ctxt->fd+1, &rfd, NULL, NULL, &tv)<1)
#if defined(EINTR)
&& (errno != EINTR)
#endif
)
return(0);
}
return(0);
}
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));
}
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;
} 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);
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);
} else if ( !xmlStrncasecmp( BAD_CAST line, BAD_CAST"Content-Length:", 15) ) {
cur += 15;
ctxt->ContentLength = strtol( cur, NULL, 10 );
}
}
static int
xmlNanoHTTPConnectAttempt(struct sockaddr *addr)
{
fd_set wfd;
#ifdef _WINSOCKAPI_
fd_set xfd;
#endif
struct timeval tv;
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
#if defined(VMS)
{
int enable = 1;
status = ioctl(s, FIONBIO, &enable);
}
#else
#if defined(__BEOS__)
{
bool noblock = true;
status = setsockopt(s, SOL_SOCKET, SO_NONBLOCK, &noblock, sizeof(noblock));
}
#else
if ((status = fcntl(s, F_GETFL, 0)) != -1) {
#ifdef O_NONBLOCK
status |= O_NONBLOCK;
#else
#ifdef F_NDELAY
status |= F_NDELAY;
#endif
#endif
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
#endif
#endif
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);
}
}
tv.tv_sec = timeout;
tv.tv_usec = 0;
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
{
case 0:
__xmlIOErr(XML_FROM_HTTP, 0, "Connect attempt timed out");
closesocket(s);
return(-1);
case -1:
__xmlIOErr(XML_FROM_HTTP, 0, "Connect failed");
closesocket(s);
return(-1);
}
if ( FD_ISSET(s, &wfd)
#ifdef _WINSOCKAPI_
|| FD_ISSET(s, &xfd)
#endif
) {
SOCKLEN_T len;
len = sizeof(status);
#ifdef SO_ERROR
if (getsockopt(s, SOL_SOCKET, SO_ERROR, (char*)&status, &len) < 0 ) {
__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 {
__xmlIOErr(XML_FROM_HTTP, 0, "select failed\n");
closesocket(s);
return (-1);
}
return(s);
}
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));
if (have_ipv6 ())
#if !defined(HAVE_GETADDRINFO) && defined(RES_USE_INET6)
{
if (!(_res.options & RES_INIT))
res_init();
_res.options |= RES_USE_INET6;
}
#elif defined(HAVE_GETADDRINFO)
{
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 || res->ai_family == AF_INET6) {
if (res->ai_family == AF_INET6) {
memcpy (&sockin6, res->ai_addr, res->ai_addrlen);
sockin6.sin6_port = htons (port);
addr = (struct sockaddr *)&sockin6;
}
else {
memcpy (&sockin, res->ai_addr, res->ai_addrlen);
sockin.sin_port = htons (port);
addr = (struct sockaddr *)&sockin;
}
s = xmlNanoHTTPConnectAttempt (addr);
if (s != -1) {
freeaddrinfo (result);
return (s);
}
}
}
if (result)
freeaddrinfo (result);
return (-1);
} else
#endif
#endif
{
h = gethostbyname (host);
if (h == NULL) {
#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) {
memcpy (&ia, h->h_addr_list[i], h->h_length);
sockin.sin_family = h->h_addrtype;
sockin.sin_addr = ia;
sockin.sin_port = htons (port);
addr = (struct sockaddr *) &sockin;
#ifdef SUPPORT_IP6
} else if (have_ipv6 () && (h->h_addrtype == AF_INET6)) {
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;
s = xmlNanoHTTPConnectAttempt (addr);
if (s != -1)
return (s);
}
}
#ifdef DEBUG_HTTP
xmlGenericError(xmlGenericErrorContext,
"xmlNanoHTTPConnectHost: unable to connect to '%s'.\n",
host);
#endif
return (-1);
}
void*
xmlNanoHTTPOpen(const char *URL, char **contentType) {
if (contentType != NULL) *contentType = NULL;
return(xmlNanoHTTPMethod(URL, NULL, NULL, contentType, NULL, 0));
}
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));
}
int
xmlNanoHTTPRead(void *ctx, void *dest, int len) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
if (ctx == NULL) return(-1);
if (dest == NULL) return(-1);
if (len <= 0) return(0);
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);
}
void
xmlNanoHTTPClose(void *ctx) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
if (ctx == NULL) return;
xmlNanoHTTPFreeCtxt(ctxt);
}
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;
blen += strlen(method) + strlen(ctxt->path) + 24;
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);
p += snprintf( p, blen - (p - bp), " HTTP/1.0\r\nHost: %s\r\n",
ctxt->hostname);
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);
}
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));
}
int
xmlNanoHTTPFetch(const char *URL, const char *filename, char **contentType) {
void *ctxt = NULL;
char *buf = NULL;
int fd;
int len;
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
int
xmlNanoHTTPSave(void *ctxt, const char *filename) {
char *buf = NULL;
int fd;
int len;
if (ctxt == NULL) return(-1);
if (!strcmp(filename, "-"))
fd = 0;
else {
fd = open(filename, O_CREAT | O_WRONLY);
if (fd < 0) {
xmlNanoHTTPClose(ctxt);
return(-1);
}
}
xmlNanoHTTPFetchContent( ctxt, &buf, &len );
if ( len > 0 ) {
write(fd, buf, len);
}
xmlNanoHTTPClose(ctxt);
return(0);
}
#endif
int
xmlNanoHTTPReturnCode(void *ctx) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
if (ctxt == NULL) return(-1);
return(ctxt->returnValue);
}
const char *
xmlNanoHTTPAuthHeader(void *ctx) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx;
if (ctxt == NULL) return(NULL);
return(ctxt->authHeader);
}
int
xmlNanoHTTPContentLength( void * ctx ) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr)ctx;
return ( ( ctxt == NULL ) ? -1 : ctxt->ContentLength );
}
const char *
xmlNanoHTTPRedir( void * ctx ) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr)ctx;
return ( ( ctxt == NULL ) ? NULL : ctxt->location );
}
const char *
xmlNanoHTTPEncoding( void * ctx ) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr)ctx;
return ( ( ctxt == NULL ) ? NULL : ctxt->encoding );
}
const char *
xmlNanoHTTPMimeType( void * ctx ) {
xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr)ctx;
return ( ( ctxt == NULL ) ? NULL : ctxt->mimeType );
}
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;
if ( len == NULL )
len = &dummy_int;
if ( ptr == NULL )
ptr = &dummy_ptr;
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
#else
#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
#endif