| /* |
| * 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 += 17; |
| else |
| blen += 11; |
| } |
| 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" |