Index: third_party/libxml/src/nanohttp.c |
diff --git a/third_party/libxml/src/nanohttp.c b/third_party/libxml/src/nanohttp.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e109ad753c6b9bc089f336bc2a684eff6b97e63f |
--- /dev/null |
+++ b/third_party/libxml/src/nanohttp.c |
@@ -0,0 +1,1890 @@ |
+/* |
+ * 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 HAVE_ZLIB_H |
+#include <zlib.h> |
+#endif |
+ |
+ |
+#ifdef VMS |
+#include <stropts> |
+#define XML_SOCKLEN_T unsigned int |
+#endif |
+ |
+#if defined(__MINGW32__) || defined(_WIN32_WCE) |
+#ifndef _WINSOCKAPI_ |
+#define _WINSOCKAPI_ |
+#endif |
+#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 |
+#define INVALID_SOCKET (-1) |
+#endif |
+ |
+#ifdef __BEOS__ |
+#ifndef PF_INET |
+#define PF_INET AF_INET |
+#endif |
+#endif |
+ |
+#ifndef XML_SOCKLEN_T |
+#define XML_SOCKLEN_T unsigned 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) { |
+ SOCKET s; |
+ |
+ s = socket (AF_INET6, SOCK_STREAM, 0); |
+ if (s != INVALID_SOCKET) { |
+ 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; |
+ int len; |
+ |
+ /* |
+ * 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); |
+ /* special case of IPv6 addresses, the [] need to be removed */ |
+ if ((uri->server != NULL) && (*uri->server == '[')) { |
+ len = strlen(uri->server); |
+ if ((len > 2) && (uri->server[len - 1] == ']')) { |
+ ctxt->hostname = (char *) xmlCharStrndup(uri->server + 1, len -2); |
+ } else |
+ ctxt->hostname = xmlMemStrdup(uri->server); |
+ } else |
+ 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 = INVALID_SOCKET; |
+ 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 != INVALID_SOCKET) closesocket(ctxt->fd); |
+ ctxt->fd = INVALID_SOCKET; |
+ 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, SEND_ARG2_CAST (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 SOCKET |
+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 == INVALID_SOCKET) { |
+#ifdef DEBUG_HTTP |
+ perror("socket"); |
+#endif |
+ __xmlIOErr(XML_FROM_HTTP, 0, "socket failed\n"); |
+ return INVALID_SOCKET; |
+ } |
+#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 INVALID_SOCKET; |
+ } |
+#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 INVALID_SOCKET; |
+ } |
+ } |
+#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 INVALID_SOCKET; |
+#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 INVALID_SOCKET; |
+ case -1: |
+ /* Ermm.. ?? */ |
+ __xmlIOErr(XML_FROM_HTTP, 0, "Connect failed"); |
+ closesocket(s); |
+ return INVALID_SOCKET; |
+ } |
+ |
+#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"); |
+ closesocket(s); |
+ return INVALID_SOCKET; |
+ } |
+#endif |
+ if (status) { |
+ __xmlIOErr(XML_FROM_HTTP, 0, |
+ "Error connecting to remote host"); |
+ closesocket(s); |
+ errno = status; |
+ return INVALID_SOCKET; |
+ } |
+ } else { |
+ /* pbm */ |
+ __xmlIOErr(XML_FROM_HTTP, 0, "select failed\n"); |
+ closesocket(s); |
+ return INVALID_SOCKET; |
+ } |
+ |
+ 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 SOCKET |
+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; |
+ SOCKET 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 INVALID_SOCKET; |
+ } |
+ |
+ 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 INVALID_SOCKET; |
+ } |
+ 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 INVALID_SOCKET; |
+ } |
+ 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 != INVALID_SOCKET) { |
+ 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 (GETHOSTBYNAME_ARG_CAST 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; |
+ |
+#ifdef NO_ADDRESS |
+ case NO_ADDRESS: |
+ h_err_txt = |
+ "Valid name, no data record of requested type."; |
+ break; |
+#endif |
+ |
+ 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 INVALID_SOCKET; |
+ } |
+ |
+ 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 INVALID_SOCKET; |
+ } |
+ memcpy (&ia, h->h_addr_list[i], h->h_length); |
+ sockin.sin_family = h->h_addrtype; |
+ sockin.sin_addr = ia; |
+ sockin.sin_port = (unsigned 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 INVALID_SOCKET; |
+ } |
+ 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 != INVALID_SOCKET) |
+ return (s); |
+ } |
+ } |
+#endif |
+ |
+#ifdef DEBUG_HTTP |
+ xmlGenericError(xmlGenericErrorContext, |
+ "xmlNanoHTTPConnectHost: unable to connect to '%s'.\n", |
+ host); |
+#endif |
+ return INVALID_SOCKET; |
+} |
+ |
+ |
+/** |
+ * 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; |
+ SOCKET 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); |
+ if (ctxt == NULL) |
+ return(NULL); |
+ } else { |
+ ctxt = xmlNanoHTTPNewCtxt(redirURL); |
+ if (ctxt == NULL) |
+ return(NULL); |
+ ctxt->location = xmlMemStrdup(redirURL); |
+ } |
+ |
+ 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 == INVALID_SOCKET) { |
+ 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; |
+ int ret = 0; |
+ |
+ 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 ) { |
+ if (write(fd, buf, len) == -1) { |
+ ret = -1; |
+ } |
+ } |
+ |
+ xmlNanoHTTPClose(ctxt); |
+ close(fd); |
+ return(ret); |
+} |
+ |
+#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; |
+ int ret = 0; |
+ |
+ 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 ) { |
+ if (write(fd, buf, len) == -1) { |
+ ret = -1; |
+ } |
+ } |
+ |
+ xmlNanoHTTPClose(ctxt); |
+ close(fd); |
+ return(ret); |
+} |
+#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" |