diff options
Diffstat (limited to 'libxml2/xmlIO.c')
| -rw-r--r-- | libxml2/xmlIO.c | 4186 |
1 files changed, 0 insertions, 4186 deletions
diff --git a/libxml2/xmlIO.c b/libxml2/xmlIO.c deleted file mode 100644 index 1a79c09..0000000 --- a/libxml2/xmlIO.c +++ /dev/null @@ -1,4186 +0,0 @@ -/* - * xmlIO.c : implementation of the I/O interfaces used by the parser - * - * See Copyright for the status of this software. - * - * daniel@veillard.com - * - * 14 Nov 2000 ht - for VMS, truncated name of long functions to under 32 char - */ - -#define IN_LIBXML -#include "libxml.h" - -#include <string.h> -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif - - -#ifdef HAVE_SYS_TYPES_H -#include <sys/types.h> -#endif -#ifdef HAVE_SYS_STAT_H -#include <sys/stat.h> -#endif -#ifdef HAVE_FCNTL_H -#include <fcntl.h> -#endif -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_ZLIB_H -#include <zlib.h> -#endif -#ifdef HAVE_LZMA_H -#include <lzma.h> -#endif - -#if defined(WIN32) || defined(_WIN32) -#include <windows.h> -#endif - -#if defined(_WIN32_WCE) -#include <winnls.h> /* for CP_UTF8 */ -#endif - -/* Figure a portable way to know if a file is a directory. */ -#ifndef HAVE_STAT -# ifdef HAVE__STAT - /* MS C library seems to define stat and _stat. The definition - is identical. Still, mapping them to each other causes a warning. */ -# ifndef _MSC_VER -# define stat(x,y) _stat(x,y) -# endif -# define HAVE_STAT -# endif -#else -# ifdef HAVE__STAT -# if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) -# define stat _stat -# endif -# endif -#endif -#ifdef HAVE_STAT -# ifndef S_ISDIR -# ifdef _S_ISDIR -# define S_ISDIR(x) _S_ISDIR(x) -# else -# ifdef S_IFDIR -# ifndef S_IFMT -# ifdef _S_IFMT -# define S_IFMT _S_IFMT -# endif -# endif -# ifdef S_IFMT -# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) -# endif -# endif -# endif -# endif -#endif - -#include <libxml/xmlmemory.h> -#include <libxml/parser.h> -#include <libxml/parserInternals.h> -#include <libxml/xmlIO.h> -#include <libxml/uri.h> -#include <libxml/nanohttp.h> -#include <libxml/nanoftp.h> -#include <libxml/xmlerror.h> -#ifdef LIBXML_CATALOG_ENABLED -#include <libxml/catalog.h> -#endif -#include <libxml/globals.h> - -#include "buf.h" -#include "enc.h" - -/* #define VERBOSE_FAILURE */ -/* #define DEBUG_EXTERNAL_ENTITIES */ -/* #define DEBUG_INPUT */ - -#ifdef DEBUG_INPUT -#define MINLEN 40 -#else -#define MINLEN 4000 -#endif - -/* - * Input I/O callback sets - */ -typedef struct _xmlInputCallback { - xmlInputMatchCallback matchcallback; - xmlInputOpenCallback opencallback; - xmlInputReadCallback readcallback; - xmlInputCloseCallback closecallback; -} xmlInputCallback; - -#define MAX_INPUT_CALLBACK 15 - -static xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK]; -static int xmlInputCallbackNr = 0; -static int xmlInputCallbackInitialized = 0; - -#ifdef LIBXML_OUTPUT_ENABLED -/* - * Output I/O callback sets - */ -typedef struct _xmlOutputCallback { - xmlOutputMatchCallback matchcallback; - xmlOutputOpenCallback opencallback; - xmlOutputWriteCallback writecallback; - xmlOutputCloseCallback closecallback; -} xmlOutputCallback; - -#define MAX_OUTPUT_CALLBACK 15 - -static xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK]; -static int xmlOutputCallbackNr = 0; -static int xmlOutputCallbackInitialized = 0; - -xmlOutputBufferPtr -xmlAllocOutputBufferInternal(xmlCharEncodingHandlerPtr encoder); -#endif /* LIBXML_OUTPUT_ENABLED */ - -/************************************************************************ - * * - * Tree memory error handler * - * * - ************************************************************************/ - -static const char *IOerr[] = { - "Unknown IO error", /* UNKNOWN */ - "Permission denied", /* EACCES */ - "Resource temporarily unavailable",/* EAGAIN */ - "Bad file descriptor", /* EBADF */ - "Bad message", /* EBADMSG */ - "Resource busy", /* EBUSY */ - "Operation canceled", /* ECANCELED */ - "No child processes", /* ECHILD */ - "Resource deadlock avoided",/* EDEADLK */ - "Domain error", /* EDOM */ - "File exists", /* EEXIST */ - "Bad address", /* EFAULT */ - "File too large", /* EFBIG */ - "Operation in progress", /* EINPROGRESS */ - "Interrupted function call",/* EINTR */ - "Invalid argument", /* EINVAL */ - "Input/output error", /* EIO */ - "Is a directory", /* EISDIR */ - "Too many open files", /* EMFILE */ - "Too many links", /* EMLINK */ - "Inappropriate message buffer length",/* EMSGSIZE */ - "Filename too long", /* ENAMETOOLONG */ - "Too many open files in system",/* ENFILE */ - "No such device", /* ENODEV */ - "No such file or directory",/* ENOENT */ - "Exec format error", /* ENOEXEC */ - "No locks available", /* ENOLCK */ - "Not enough space", /* ENOMEM */ - "No space left on device", /* ENOSPC */ - "Function not implemented", /* ENOSYS */ - "Not a directory", /* ENOTDIR */ - "Directory not empty", /* ENOTEMPTY */ - "Not supported", /* ENOTSUP */ - "Inappropriate I/O control operation",/* ENOTTY */ - "No such device or address",/* ENXIO */ - "Operation not permitted", /* EPERM */ - "Broken pipe", /* EPIPE */ - "Result too large", /* ERANGE */ - "Read-only file system", /* EROFS */ - "Invalid seek", /* ESPIPE */ - "No such process", /* ESRCH */ - "Operation timed out", /* ETIMEDOUT */ - "Improper link", /* EXDEV */ - "Attempt to load network entity %s", /* XML_IO_NETWORK_ATTEMPT */ - "encoder error", /* XML_IO_ENCODER */ - "flush error", - "write error", - "no input", - "buffer full", - "loading error", - "not a socket", /* ENOTSOCK */ - "already connected", /* EISCONN */ - "connection refused", /* ECONNREFUSED */ - "unreachable network", /* ENETUNREACH */ - "adddress in use", /* EADDRINUSE */ - "already in use", /* EALREADY */ - "unknown address familly", /* EAFNOSUPPORT */ -}; - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) -/** - * __xmlIOWin32UTF8ToWChar: - * @u8String: uft-8 string - * - * Convert a string from utf-8 to wchar (WINDOWS ONLY!) - */ -static wchar_t * -__xmlIOWin32UTF8ToWChar(const char *u8String) -{ - wchar_t *wString = NULL; - - if (u8String) { - int wLen = - MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, u8String, - -1, NULL, 0); - if (wLen) { - wString = xmlMalloc(wLen * sizeof(wchar_t)); - if (wString) { - if (MultiByteToWideChar - (CP_UTF8, 0, u8String, -1, wString, wLen) == 0) { - xmlFree(wString); - wString = NULL; - } - } - } - } - - return wString; -} -#endif - -/** - * xmlIOErrMemory: - * @extra: extra informations - * - * Handle an out of memory condition - */ -static void -xmlIOErrMemory(const char *extra) -{ - __xmlSimpleError(XML_FROM_IO, XML_ERR_NO_MEMORY, NULL, NULL, extra); -} - -/** - * __xmlIOErr: - * @code: the error number - * @ - * @extra: extra informations - * - * Handle an I/O error - */ -void -__xmlIOErr(int domain, int code, const char *extra) -{ - unsigned int idx; - - if (code == 0) { -#ifdef HAVE_ERRNO_H - if (errno == 0) code = 0; -#ifdef EACCES - else if (errno == EACCES) code = XML_IO_EACCES; -#endif -#ifdef EAGAIN - else if (errno == EAGAIN) code = XML_IO_EAGAIN; -#endif -#ifdef EBADF - else if (errno == EBADF) code = XML_IO_EBADF; -#endif -#ifdef EBADMSG - else if (errno == EBADMSG) code = XML_IO_EBADMSG; -#endif -#ifdef EBUSY - else if (errno == EBUSY) code = XML_IO_EBUSY; -#endif -#ifdef ECANCELED - else if (errno == ECANCELED) code = XML_IO_ECANCELED; -#endif -#ifdef ECHILD - else if (errno == ECHILD) code = XML_IO_ECHILD; -#endif -#ifdef EDEADLK - else if (errno == EDEADLK) code = XML_IO_EDEADLK; -#endif -#ifdef EDOM - else if (errno == EDOM) code = XML_IO_EDOM; -#endif -#ifdef EEXIST - else if (errno == EEXIST) code = XML_IO_EEXIST; -#endif -#ifdef EFAULT - else if (errno == EFAULT) code = XML_IO_EFAULT; -#endif -#ifdef EFBIG - else if (errno == EFBIG) code = XML_IO_EFBIG; -#endif -#ifdef EINPROGRESS - else if (errno == EINPROGRESS) code = XML_IO_EINPROGRESS; -#endif -#ifdef EINTR - else if (errno == EINTR) code = XML_IO_EINTR; -#endif -#ifdef EINVAL - else if (errno == EINVAL) code = XML_IO_EINVAL; -#endif -#ifdef EIO - else if (errno == EIO) code = XML_IO_EIO; -#endif -#ifdef EISDIR - else if (errno == EISDIR) code = XML_IO_EISDIR; -#endif -#ifdef EMFILE - else if (errno == EMFILE) code = XML_IO_EMFILE; -#endif -#ifdef EMLINK - else if (errno == EMLINK) code = XML_IO_EMLINK; -#endif -#ifdef EMSGSIZE - else if (errno == EMSGSIZE) code = XML_IO_EMSGSIZE; -#endif -#ifdef ENAMETOOLONG - else if (errno == ENAMETOOLONG) code = XML_IO_ENAMETOOLONG; -#endif -#ifdef ENFILE - else if (errno == ENFILE) code = XML_IO_ENFILE; -#endif -#ifdef ENODEV - else if (errno == ENODEV) code = XML_IO_ENODEV; -#endif -#ifdef ENOENT - else if (errno == ENOENT) code = XML_IO_ENOENT; -#endif -#ifdef ENOEXEC - else if (errno == ENOEXEC) code = XML_IO_ENOEXEC; -#endif -#ifdef ENOLCK - else if (errno == ENOLCK) code = XML_IO_ENOLCK; -#endif -#ifdef ENOMEM - else if (errno == ENOMEM) code = XML_IO_ENOMEM; -#endif -#ifdef ENOSPC - else if (errno == ENOSPC) code = XML_IO_ENOSPC; -#endif -#ifdef ENOSYS - else if (errno == ENOSYS) code = XML_IO_ENOSYS; -#endif -#ifdef ENOTDIR - else if (errno == ENOTDIR) code = XML_IO_ENOTDIR; -#endif -#ifdef ENOTEMPTY - else if (errno == ENOTEMPTY) code = XML_IO_ENOTEMPTY; -#endif -#ifdef ENOTSUP - else if (errno == ENOTSUP) code = XML_IO_ENOTSUP; -#endif -#ifdef ENOTTY - else if (errno == ENOTTY) code = XML_IO_ENOTTY; -#endif -#ifdef ENXIO - else if (errno == ENXIO) code = XML_IO_ENXIO; -#endif -#ifdef EPERM - else if (errno == EPERM) code = XML_IO_EPERM; -#endif -#ifdef EPIPE - else if (errno == EPIPE) code = XML_IO_EPIPE; -#endif -#ifdef ERANGE - else if (errno == ERANGE) code = XML_IO_ERANGE; -#endif -#ifdef EROFS - else if (errno == EROFS) code = XML_IO_EROFS; -#endif -#ifdef ESPIPE - else if (errno == ESPIPE) code = XML_IO_ESPIPE; -#endif -#ifdef ESRCH - else if (errno == ESRCH) code = XML_IO_ESRCH; -#endif -#ifdef ETIMEDOUT - else if (errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT; -#endif -#ifdef EXDEV - else if (errno == EXDEV) code = XML_IO_EXDEV; -#endif -#ifdef ENOTSOCK - else if (errno == ENOTSOCK) code = XML_IO_ENOTSOCK; -#endif -#ifdef EISCONN - else if (errno == EISCONN) code = XML_IO_EISCONN; -#endif -#ifdef ECONNREFUSED - else if (errno == ECONNREFUSED) code = XML_IO_ECONNREFUSED; -#endif -#ifdef ETIMEDOUT - else if (errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT; -#endif -#ifdef ENETUNREACH - else if (errno == ENETUNREACH) code = XML_IO_ENETUNREACH; -#endif -#ifdef EADDRINUSE - else if (errno == EADDRINUSE) code = XML_IO_EADDRINUSE; -#endif -#ifdef EINPROGRESS - else if (errno == EINPROGRESS) code = XML_IO_EINPROGRESS; -#endif -#ifdef EALREADY - else if (errno == EALREADY) code = XML_IO_EALREADY; -#endif -#ifdef EAFNOSUPPORT - else if (errno == EAFNOSUPPORT) code = XML_IO_EAFNOSUPPORT; -#endif - else code = XML_IO_UNKNOWN; -#endif /* HAVE_ERRNO_H */ - } - idx = 0; - if (code >= XML_IO_UNKNOWN) idx = code - XML_IO_UNKNOWN; - if (idx >= (sizeof(IOerr) / sizeof(IOerr[0]))) idx = 0; - - __xmlSimpleError(domain, code, NULL, IOerr[idx], extra); -} - -/** - * xmlIOErr: - * @code: the error number - * @extra: extra informations - * - * Handle an I/O error - */ -static void -xmlIOErr(int code, const char *extra) -{ - __xmlIOErr(XML_FROM_IO, code, extra); -} - -/** - * __xmlLoaderErr: - * @ctx: the parser context - * @extra: extra informations - * - * Handle a resource access error - */ -void -__xmlLoaderErr(void *ctx, const char *msg, const char *filename) -{ - xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx; - xmlStructuredErrorFunc schannel = NULL; - xmlGenericErrorFunc channel = NULL; - void *data = NULL; - xmlErrorLevel level = XML_ERR_ERROR; - - if ((ctxt != NULL) && (ctxt->disableSAX != 0) && - (ctxt->instate == XML_PARSER_EOF)) - return; - if ((ctxt != NULL) && (ctxt->sax != NULL)) { - if (ctxt->validate) { - channel = ctxt->sax->error; - level = XML_ERR_ERROR; - } else { - channel = ctxt->sax->warning; - level = XML_ERR_WARNING; - } - if (ctxt->sax->initialized == XML_SAX2_MAGIC) - schannel = ctxt->sax->serror; - data = ctxt->userData; - } - __xmlRaiseError(schannel, channel, data, ctxt, NULL, XML_FROM_IO, - XML_IO_LOAD_ERROR, level, NULL, 0, - filename, NULL, NULL, 0, 0, - msg, filename); - -} - -/************************************************************************ - * * - * Tree memory error handler * - * * - ************************************************************************/ -/** - * xmlNormalizeWindowsPath: - * @path: the input file path - * - * This function is obsolete. Please see xmlURIFromPath in uri.c for - * a better solution. - * - * Returns a canonicalized version of the path - */ -xmlChar * -xmlNormalizeWindowsPath(const xmlChar *path) -{ - return xmlCanonicPath(path); -} - -/** - * xmlCleanupInputCallbacks: - * - * clears the entire input callback table. this includes the - * compiled-in I/O. - */ -void -xmlCleanupInputCallbacks(void) -{ - int i; - - if (!xmlInputCallbackInitialized) - return; - - for (i = xmlInputCallbackNr - 1; i >= 0; i--) { - xmlInputCallbackTable[i].matchcallback = NULL; - xmlInputCallbackTable[i].opencallback = NULL; - xmlInputCallbackTable[i].readcallback = NULL; - xmlInputCallbackTable[i].closecallback = NULL; - } - - xmlInputCallbackNr = 0; - xmlInputCallbackInitialized = 0; -} - -/** - * xmlPopInputCallbacks: - * - * Clear the top input callback from the input stack. this includes the - * compiled-in I/O. - * - * Returns the number of input callback registered or -1 in case of error. - */ -int -xmlPopInputCallbacks(void) -{ - if (!xmlInputCallbackInitialized) - return(-1); - - if (xmlInputCallbackNr <= 0) - return(-1); - - xmlInputCallbackNr--; - xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = NULL; - xmlInputCallbackTable[xmlInputCallbackNr].opencallback = NULL; - xmlInputCallbackTable[xmlInputCallbackNr].readcallback = NULL; - xmlInputCallbackTable[xmlInputCallbackNr].closecallback = NULL; - - return(xmlInputCallbackNr); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlCleanupOutputCallbacks: - * - * clears the entire output callback table. this includes the - * compiled-in I/O callbacks. - */ -void -xmlCleanupOutputCallbacks(void) -{ - int i; - - if (!xmlOutputCallbackInitialized) - return; - - for (i = xmlOutputCallbackNr - 1; i >= 0; i--) { - xmlOutputCallbackTable[i].matchcallback = NULL; - xmlOutputCallbackTable[i].opencallback = NULL; - xmlOutputCallbackTable[i].writecallback = NULL; - xmlOutputCallbackTable[i].closecallback = NULL; - } - - xmlOutputCallbackNr = 0; - xmlOutputCallbackInitialized = 0; -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/************************************************************************ - * * - * Standard I/O for file accesses * - * * - ************************************************************************/ - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - -/** - * xmlWrapOpenUtf8: - * @path: the path in utf-8 encoding - * @mode: type of access (0 - read, 1 - write) - * - * function opens the file specified by @path - * - */ -static FILE* -xmlWrapOpenUtf8(const char *path,int mode) -{ - FILE *fd = NULL; - wchar_t *wPath; - - wPath = __xmlIOWin32UTF8ToWChar(path); - if(wPath) - { - fd = _wfopen(wPath, mode ? L"wb" : L"rb"); - xmlFree(wPath); - } - /* maybe path in native encoding */ - if(fd == NULL) - fd = fopen(path, mode ? "wb" : "rb"); - - return fd; -} - -#ifdef HAVE_ZLIB_H -static gzFile -xmlWrapGzOpenUtf8(const char *path, const char *mode) -{ - gzFile fd; - wchar_t *wPath; - - fd = gzopen (path, mode); - if (fd) - return fd; - - wPath = __xmlIOWin32UTF8ToWChar(path); - if(wPath) - { - int d, m = (strstr(mode, "r") ? O_RDONLY : O_RDWR); -#ifdef _O_BINARY - m |= (strstr(mode, "b") ? _O_BINARY : 0); -#endif - d = _wopen(wPath, m); - if (d >= 0) - fd = gzdopen(d, mode); - xmlFree(wPath); - } - - return fd; -} -#endif - -/** - * xmlWrapStatUtf8: - * @path: the path in utf-8 encoding - * @info: structure that stores results - * - * function obtains information about the file or directory - * - */ -static int -xmlWrapStatUtf8(const char *path,struct stat *info) -{ -#ifdef HAVE_STAT - int retval = -1; - wchar_t *wPath; - - wPath = __xmlIOWin32UTF8ToWChar(path); - if (wPath) - { - retval = _wstat(wPath,info); - xmlFree(wPath); - } - /* maybe path in native encoding */ - if(retval < 0) - retval = stat(path,info); - return retval; -#else - return -1; -#endif -} - -/** - * xmlWrapOpenNative: - * @path: the path - * @mode: type of access (0 - read, 1 - write) - * - * function opens the file specified by @path - * - */ -static FILE* -xmlWrapOpenNative(const char *path,int mode) -{ - return fopen(path,mode ? "wb" : "rb"); -} - -/** - * xmlWrapStatNative: - * @path: the path - * @info: structure that stores results - * - * function obtains information about the file or directory - * - */ -static int -xmlWrapStatNative(const char *path,struct stat *info) -{ -#ifdef HAVE_STAT - return stat(path,info); -#else - return -1; -#endif -} - -typedef int (* xmlWrapStatFunc) (const char *f, struct stat *s); -static xmlWrapStatFunc xmlWrapStat = xmlWrapStatNative; -typedef FILE* (* xmlWrapOpenFunc)(const char *f,int mode); -static xmlWrapOpenFunc xmlWrapOpen = xmlWrapOpenNative; -#ifdef HAVE_ZLIB_H -typedef gzFile (* xmlWrapGzOpenFunc) (const char *f, const char *mode); -static xmlWrapGzOpenFunc xmlWrapGzOpen = gzopen; -#endif -/** - * xmlInitPlatformSpecificIo: - * - * Initialize platform specific features. - */ -static void -xmlInitPlatformSpecificIo(void) -{ - static int xmlPlatformIoInitialized = 0; - OSVERSIONINFO osvi; - - if(xmlPlatformIoInitialized) - return; - - osvi.dwOSVersionInfoSize = sizeof(osvi); - - if(GetVersionEx(&osvi) && (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)) { - xmlWrapStat = xmlWrapStatUtf8; - xmlWrapOpen = xmlWrapOpenUtf8; -#ifdef HAVE_ZLIB_H - xmlWrapGzOpen = xmlWrapGzOpenUtf8; -#endif - } else { - xmlWrapStat = xmlWrapStatNative; - xmlWrapOpen = xmlWrapOpenNative; -#ifdef HAVE_ZLIB_H - xmlWrapGzOpen = gzopen; -#endif - } - - xmlPlatformIoInitialized = 1; - return; -} - -#endif - -/** - * xmlCheckFilename: - * @path: the path to check - * - * function checks to see if @path is a valid source - * (file, socket...) for XML. - * - * if stat is not available on the target machine, - * returns 1. if stat fails, returns 0 (if calling - * stat on the filename fails, it can't be right). - * if stat succeeds and the file is a directory, - * returns 2. otherwise returns 1. - */ - -int -xmlCheckFilename (const char *path) -{ -#ifdef HAVE_STAT - struct stat stat_buffer; -#endif - if (path == NULL) - return(0); - -#ifdef HAVE_STAT -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - /* - * On Windows stat and wstat do not work with long pathname, - * which start with '\\?\' - */ - if ((path[0] == '\\') && (path[1] == '\\') && (path[2] == '?') && - (path[3] == '\\') ) - return 1; - - if (xmlWrapStat(path, &stat_buffer) == -1) - return 0; -#else - if (stat(path, &stat_buffer) == -1) - return 0; -#endif -#ifdef S_ISDIR - if (S_ISDIR(stat_buffer.st_mode)) - return 2; -#endif -#endif /* HAVE_STAT */ - return 1; -} - -/** - * xmlNop: - * - * No Operation function, does nothing, no input - * - * Returns zero - */ -int -xmlNop(void) { - return(0); -} - -/** - * xmlFdRead: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to read - * - * Read @len bytes to @buffer from the I/O channel. - * - * Returns the number of bytes written - */ -static int -xmlFdRead (void * context, char * buffer, int len) { - int ret; - - ret = read((int) (long) context, &buffer[0], len); - if (ret < 0) xmlIOErr(0, "read()"); - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlFdWrite: - * @context: the I/O context - * @buffer: where to get data - * @len: number of bytes to write - * - * Write @len bytes from @buffer to the I/O channel. - * - * Returns the number of bytes written - */ -static int -xmlFdWrite (void * context, const char * buffer, int len) { - int ret = 0; - - if (len > 0) { - ret = write((int) (long) context, &buffer[0], len); - if (ret < 0) xmlIOErr(0, "write()"); - } - return(ret); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlFdClose: - * @context: the I/O context - * - * Close an I/O channel - * - * Returns 0 in case of success and error code otherwise - */ -static int -xmlFdClose (void * context) { - int ret; - ret = close((int) (long) context); - if (ret < 0) xmlIOErr(0, "close()"); - return(ret); -} - -/** - * xmlFileMatch: - * @filename: the URI for matching - * - * input from FILE * - * - * Returns 1 if matches, 0 otherwise - */ -int -xmlFileMatch (const char *filename ATTRIBUTE_UNUSED) { - return(1); -} - -/** - * xmlFileOpen_real: - * @filename: the URI for matching - * - * input from FILE *, supports compressed input - * if @filename is " " then the standard input is used - * - * Returns an I/O context or NULL in case of error - */ -static void * -xmlFileOpen_real (const char *filename) { - const char *path = filename; - FILE *fd; - - if (filename == NULL) - return(NULL); - - if (!strcmp(filename, "-")) { - fd = stdin; - return((void *) fd); - } - - if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) { -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[17]; -#else - path = &filename[16]; -#endif - } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[8]; -#else - path = &filename[7]; -#endif - } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:/", 6)) { - /* lots of generators seems to lazy to read RFC 1738 */ -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[6]; -#else - path = &filename[5]; -#endif - } - - if (!xmlCheckFilename(path)) - return(NULL); - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - fd = xmlWrapOpen(path, 0); -#else - fd = fopen(path, "r"); -#endif /* WIN32 */ - if (fd == NULL) xmlIOErr(0, path); - return((void *) fd); -} - -/** - * xmlFileOpen: - * @filename: the URI for matching - * - * Wrapper around xmlFileOpen_real that try it with an unescaped - * version of @filename, if this fails fallback to @filename - * - * Returns a handler or NULL in case or failure - */ -void * -xmlFileOpen (const char *filename) { - char *unescaped; - void *retval; - - retval = xmlFileOpen_real(filename); - if (retval == NULL) { - unescaped = xmlURIUnescapeString(filename, 0, NULL); - if (unescaped != NULL) { - retval = xmlFileOpen_real(unescaped); - xmlFree(unescaped); - } - } - - return retval; -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlFileOpenW: - * @filename: the URI for matching - * - * output to from FILE *, - * if @filename is "-" then the standard output is used - * - * Returns an I/O context or NULL in case of error - */ -static void * -xmlFileOpenW (const char *filename) { - const char *path = NULL; - FILE *fd; - - if (!strcmp(filename, "-")) { - fd = stdout; - return((void *) fd); - } - - if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[17]; -#else - path = &filename[16]; -#endif - else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[8]; -#else - path = &filename[7]; -#endif - } else - path = filename; - - if (path == NULL) - return(NULL); - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - fd = xmlWrapOpen(path, 1); -#else - fd = fopen(path, "wb"); -#endif /* WIN32 */ - - if (fd == NULL) xmlIOErr(0, path); - return((void *) fd); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlFileRead: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to write - * - * Read @len bytes to @buffer from the I/O channel. - * - * Returns the number of bytes written or < 0 in case of failure - */ -int -xmlFileRead (void * context, char * buffer, int len) { - int ret; - if ((context == NULL) || (buffer == NULL)) - return(-1); - ret = fread(&buffer[0], 1, len, (FILE *) context); - if (ret < 0) xmlIOErr(0, "fread()"); - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlFileWrite: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to write - * - * Write @len bytes from @buffer to the I/O channel. - * - * Returns the number of bytes written - */ -static int -xmlFileWrite (void * context, const char * buffer, int len) { - int items; - - if ((context == NULL) || (buffer == NULL)) - return(-1); - items = fwrite(&buffer[0], len, 1, (FILE *) context); - if ((items == 0) && (ferror((FILE *) context))) { - xmlIOErr(0, "fwrite()"); - return(-1); - } - return(items * len); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlFileClose: - * @context: the I/O context - * - * Close an I/O channel - * - * Returns 0 or -1 in case of error - */ -int -xmlFileClose (void * context) { - FILE *fil; - int ret; - - if (context == NULL) - return(-1); - fil = (FILE *) context; - if ((fil == stdout) || (fil == stderr)) { - ret = fflush(fil); - if (ret < 0) - xmlIOErr(0, "fflush()"); - return(0); - } - if (fil == stdin) - return(0); - ret = ( fclose((FILE *) context) == EOF ) ? -1 : 0; - if (ret < 0) - xmlIOErr(0, "fclose()"); - return(ret); -} - -/** - * xmlFileFlush: - * @context: the I/O context - * - * Flush an I/O channel - */ -static int -xmlFileFlush (void * context) { - int ret; - - if (context == NULL) - return(-1); - ret = ( fflush((FILE *) context) == EOF ) ? -1 : 0; - if (ret < 0) - xmlIOErr(0, "fflush()"); - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlBufferWrite: - * @context: the xmlBuffer - * @buffer: the data to write - * @len: number of bytes to write - * - * Write @len bytes from @buffer to the xml buffer - * - * Returns the number of bytes written - */ -static int -xmlBufferWrite (void * context, const char * buffer, int len) { - int ret; - - ret = xmlBufferAdd((xmlBufferPtr) context, (const xmlChar *) buffer, len); - if (ret != 0) - return(-1); - return(len); -} -#endif - -#ifdef HAVE_ZLIB_H -/************************************************************************ - * * - * I/O for compressed file accesses * - * * - ************************************************************************/ -/** - * xmlGzfileMatch: - * @filename: the URI for matching - * - * input from compressed file test - * - * Returns 1 if matches, 0 otherwise - */ -static int -xmlGzfileMatch (const char *filename ATTRIBUTE_UNUSED) { - return(1); -} - -/** - * xmlGzfileOpen_real: - * @filename: the URI for matching - * - * input from compressed file open - * if @filename is " " then the standard input is used - * - * Returns an I/O context or NULL in case of error - */ -static void * -xmlGzfileOpen_real (const char *filename) { - const char *path = NULL; - gzFile fd; - - if (!strcmp(filename, "-")) { - int duped_fd = dup(fileno(stdin)); - fd = gzdopen(duped_fd, "rb"); - if (fd == Z_NULL && duped_fd >= 0) { - close(duped_fd); /* gzdOpen() does not close on failure */ - } - - return((void *) fd); - } - - if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[17]; -#else - path = &filename[16]; -#endif - else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[8]; -#else - path = &filename[7]; -#endif - } else - path = filename; - - if (path == NULL) - return(NULL); - if (!xmlCheckFilename(path)) - return(NULL); - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - fd = xmlWrapGzOpen(path, "rb"); -#else - fd = gzopen(path, "rb"); -#endif - return((void *) fd); -} - -/** - * xmlGzfileOpen: - * @filename: the URI for matching - * - * Wrapper around xmlGzfileOpen if the open fais, it will - * try to unescape @filename - */ -static void * -xmlGzfileOpen (const char *filename) { - char *unescaped; - void *retval; - - retval = xmlGzfileOpen_real(filename); - if (retval == NULL) { - unescaped = xmlURIUnescapeString(filename, 0, NULL); - if (unescaped != NULL) { - retval = xmlGzfileOpen_real(unescaped); - } - xmlFree(unescaped); - } - return retval; -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlGzfileOpenW: - * @filename: the URI for matching - * @compression: the compression factor (0 - 9 included) - * - * input from compressed file open - * if @filename is " " then the standard input is used - * - * Returns an I/O context or NULL in case of error - */ -static void * -xmlGzfileOpenW (const char *filename, int compression) { - const char *path = NULL; - char mode[15]; - gzFile fd; - - snprintf(mode, sizeof(mode), "wb%d", compression); - if (!strcmp(filename, "-")) { - int duped_fd = dup(fileno(stdout)); - fd = gzdopen(duped_fd, "rb"); - if (fd == Z_NULL && duped_fd >= 0) { - close(duped_fd); /* gzdOpen() does not close on failure */ - } - - return((void *) fd); - } - - if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[17]; -#else - path = &filename[16]; -#endif - else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &filename[8]; -#else - path = &filename[7]; -#endif - } else - path = filename; - - if (path == NULL) - return(NULL); - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - fd = xmlWrapGzOpen(path, mode); -#else - fd = gzopen(path, mode); -#endif - return((void *) fd); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlGzfileRead: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to write - * - * Read @len bytes to @buffer from the compressed I/O channel. - * - * Returns the number of bytes written - */ -static int -xmlGzfileRead (void * context, char * buffer, int len) { - int ret; - - ret = gzread((gzFile) context, &buffer[0], len); - if (ret < 0) xmlIOErr(0, "gzread()"); - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlGzfileWrite: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to write - * - * Write @len bytes from @buffer to the compressed I/O channel. - * - * Returns the number of bytes written - */ -static int -xmlGzfileWrite (void * context, const char * buffer, int len) { - int ret; - - ret = gzwrite((gzFile) context, (char *) &buffer[0], len); - if (ret < 0) xmlIOErr(0, "gzwrite()"); - return(ret); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlGzfileClose: - * @context: the I/O context - * - * Close a compressed I/O channel - */ -static int -xmlGzfileClose (void * context) { - int ret; - - ret = (gzclose((gzFile) context) == Z_OK ) ? 0 : -1; - if (ret < 0) xmlIOErr(0, "gzclose()"); - return(ret); -} -#endif /* HAVE_ZLIB_H */ - -#ifdef LIBXML_LZMA_ENABLED -/************************************************************************ - * * - * I/O for compressed file accesses * - * * - ************************************************************************/ -#include "xzlib.h" -/** - * xmlXzfileMatch: - * @filename: the URI for matching - * - * input from compressed file test - * - * Returns 1 if matches, 0 otherwise - */ -static int -xmlXzfileMatch (const char *filename ATTRIBUTE_UNUSED) { - return(1); -} - -/** - * xmlXzFileOpen_real: - * @filename: the URI for matching - * - * input from compressed file open - * if @filename is " " then the standard input is used - * - * Returns an I/O context or NULL in case of error - */ -static void * -xmlXzfileOpen_real (const char *filename) { - const char *path = NULL; - xzFile fd; - - if (!strcmp(filename, "-")) { - fd = __libxml2_xzdopen(dup(fileno(stdin)), "rb"); - return((void *) fd); - } - - if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) { - path = &filename[16]; - } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { - path = &filename[7]; - } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:/", 6)) { - /* lots of generators seems to lazy to read RFC 1738 */ - path = &filename[5]; - } else - path = filename; - - if (path == NULL) - return(NULL); - if (!xmlCheckFilename(path)) - return(NULL); - - fd = __libxml2_xzopen(path, "rb"); - return((void *) fd); -} - -/** - * xmlXzfileOpen: - * @filename: the URI for matching - * - * Wrapper around xmlXzfileOpen_real that try it with an unescaped - * version of @filename, if this fails fallback to @filename - * - * Returns a handler or NULL in case or failure - */ -static void * -xmlXzfileOpen (const char *filename) { - char *unescaped; - void *retval; - - retval = xmlXzfileOpen_real(filename); - if (retval == NULL) { - unescaped = xmlURIUnescapeString(filename, 0, NULL); - if (unescaped != NULL) { - retval = xmlXzfileOpen_real(unescaped); - } - xmlFree(unescaped); - } - - return retval; -} - -/** - * xmlXzfileRead: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to write - * - * Read @len bytes to @buffer from the compressed I/O channel. - * - * Returns the number of bytes written - */ -static int -xmlXzfileRead (void * context, char * buffer, int len) { - int ret; - - ret = __libxml2_xzread((xzFile) context, &buffer[0], len); - if (ret < 0) xmlIOErr(0, "xzread()"); - return(ret); -} - -/** - * xmlXzfileClose: - * @context: the I/O context - * - * Close a compressed I/O channel - */ -static int -xmlXzfileClose (void * context) { - int ret; - - ret = (__libxml2_xzclose((xzFile) context) == LZMA_OK ) ? 0 : -1; - if (ret < 0) xmlIOErr(0, "xzclose()"); - return(ret); -} -#endif /* LIBXML_LZMA_ENABLED */ - -#ifdef LIBXML_HTTP_ENABLED -/************************************************************************ - * * - * I/O for HTTP file accesses * - * * - ************************************************************************/ - -#ifdef LIBXML_OUTPUT_ENABLED -typedef struct xmlIOHTTPWriteCtxt_ -{ - int compression; - - char * uri; - - void * doc_buff; - -} xmlIOHTTPWriteCtxt, *xmlIOHTTPWriteCtxtPtr; - -#ifdef HAVE_ZLIB_H - -#define DFLT_WBITS ( -15 ) -#define DFLT_MEM_LVL ( 8 ) -#define GZ_MAGIC1 ( 0x1f ) -#define GZ_MAGIC2 ( 0x8b ) -#define LXML_ZLIB_OS_CODE ( 0x03 ) -#define INIT_HTTP_BUFF_SIZE ( 32768 ) -#define DFLT_ZLIB_RATIO ( 5 ) - -/* -** Data structure and functions to work with sending compressed data -** via HTTP. -*/ - -typedef struct xmlZMemBuff_ -{ - unsigned long size; - unsigned long crc; - - unsigned char * zbuff; - z_stream zctrl; - -} xmlZMemBuff, *xmlZMemBuffPtr; - -/** - * append_reverse_ulong - * @buff: Compressed memory buffer - * @data: Unsigned long to append - * - * Append a unsigned long in reverse byte order to the end of the - * memory buffer. - */ -static void -append_reverse_ulong( xmlZMemBuff * buff, unsigned long data ) { - - int idx; - - if ( buff == NULL ) - return; - - /* - ** This is plagiarized from putLong in gzio.c (zlib source) where - ** the number "4" is hardcoded. If zlib is ever patched to - ** support 64 bit file sizes, this code would need to be patched - ** as well. - */ - - for ( idx = 0; idx < 4; idx++ ) { - *buff->zctrl.next_out = ( data & 0xff ); - data >>= 8; - buff->zctrl.next_out++; - } - - return; -} - -/** - * - * xmlFreeZMemBuff - * @buff: The memory buffer context to clear - * - * Release all the resources associated with the compressed memory buffer. - */ -static void -xmlFreeZMemBuff( xmlZMemBuffPtr buff ) { - -#ifdef DEBUG_HTTP - int z_err; -#endif - - if ( buff == NULL ) - return; - - xmlFree( buff->zbuff ); -#ifdef DEBUG_HTTP - z_err = deflateEnd( &buff->zctrl ); - if ( z_err != Z_OK ) - xmlGenericError( xmlGenericErrorContext, - "xmlFreeZMemBuff: Error releasing zlib context: %d\n", - z_err ); -#else - deflateEnd( &buff->zctrl ); -#endif - - xmlFree( buff ); - return; -} - -/** - * xmlCreateZMemBuff - *@compression: Compression value to use - * - * Create a memory buffer to hold the compressed XML document. The - * compressed document in memory will end up being identical to what - * would be created if gzopen/gzwrite/gzclose were being used to - * write the document to disk. The code for the header/trailer data to - * the compression is plagiarized from the zlib source files. - */ -static void * -xmlCreateZMemBuff( int compression ) { - - int z_err; - int hdr_lgth; - xmlZMemBuffPtr buff = NULL; - - if ( ( compression < 1 ) || ( compression > 9 ) ) - return ( NULL ); - - /* Create the control and data areas */ - - buff = xmlMalloc( sizeof( xmlZMemBuff ) ); - if ( buff == NULL ) { - xmlIOErrMemory("creating buffer context"); - return ( NULL ); - } - - (void)memset( buff, 0, sizeof( xmlZMemBuff ) ); - buff->size = INIT_HTTP_BUFF_SIZE; - buff->zbuff = xmlMalloc( buff->size ); - if ( buff->zbuff == NULL ) { - xmlFreeZMemBuff( buff ); - xmlIOErrMemory("creating buffer"); - return ( NULL ); - } - - z_err = deflateInit2( &buff->zctrl, compression, Z_DEFLATED, - DFLT_WBITS, DFLT_MEM_LVL, Z_DEFAULT_STRATEGY ); - if ( z_err != Z_OK ) { - xmlChar msg[500]; - xmlFreeZMemBuff( buff ); - buff = NULL; - xmlStrPrintf(msg, 500, - "xmlCreateZMemBuff: %s %d\n", - "Error initializing compression context. ZLIB error:", - z_err ); - xmlIOErr(XML_IO_WRITE, (const char *) msg); - return ( NULL ); - } - - /* Set the header data. The CRC will be needed for the trailer */ - buff->crc = crc32( 0L, NULL, 0 ); - hdr_lgth = snprintf( (char *)buff->zbuff, buff->size, - "%c%c%c%c%c%c%c%c%c%c", - GZ_MAGIC1, GZ_MAGIC2, Z_DEFLATED, - 0, 0, 0, 0, 0, 0, LXML_ZLIB_OS_CODE ); - buff->zctrl.next_out = buff->zbuff + hdr_lgth; - buff->zctrl.avail_out = buff->size - hdr_lgth; - - return ( buff ); -} - -/** - * xmlZMemBuffExtend - * @buff: Buffer used to compress and consolidate data. - * @ext_amt: Number of bytes to extend the buffer. - * - * Extend the internal buffer used to store the compressed data by the - * specified amount. - * - * Returns 0 on success or -1 on failure to extend the buffer. On failure - * the original buffer still exists at the original size. - */ -static int -xmlZMemBuffExtend( xmlZMemBuffPtr buff, size_t ext_amt ) { - - int rc = -1; - size_t new_size; - size_t cur_used; - - unsigned char * tmp_ptr = NULL; - - if ( buff == NULL ) - return ( -1 ); - - else if ( ext_amt == 0 ) - return ( 0 ); - - cur_used = buff->zctrl.next_out - buff->zbuff; - new_size = buff->size + ext_amt; - -#ifdef DEBUG_HTTP - if ( cur_used > new_size ) - xmlGenericError( xmlGenericErrorContext, - "xmlZMemBuffExtend: %s\n%s %d bytes.\n", - "Buffer overwrite detected during compressed memory", - "buffer extension. Overflowed by", - (cur_used - new_size ) ); -#endif - - tmp_ptr = xmlRealloc( buff->zbuff, new_size ); - if ( tmp_ptr != NULL ) { - rc = 0; - buff->size = new_size; - buff->zbuff = tmp_ptr; - buff->zctrl.next_out = tmp_ptr + cur_used; - buff->zctrl.avail_out = new_size - cur_used; - } - else { - xmlChar msg[500]; - xmlStrPrintf(msg, 500, - "xmlZMemBuffExtend: %s %lu bytes.\n", - "Allocation failure extending output buffer to", - new_size ); - xmlIOErr(XML_IO_WRITE, (const char *) msg); - } - - return ( rc ); -} - -/** - * xmlZMemBuffAppend - * @buff: Buffer used to compress and consolidate data - * @src: Uncompressed source content to append to buffer - * @len: Length of source data to append to buffer - * - * Compress and append data to the internal buffer. The data buffer - * will be expanded if needed to store the additional data. - * - * Returns the number of bytes appended to the buffer or -1 on error. - */ -static int -xmlZMemBuffAppend( xmlZMemBuffPtr buff, const char * src, int len ) { - - int z_err; - size_t min_accept; - - if ( ( buff == NULL ) || ( src == NULL ) ) - return ( -1 ); - - buff->zctrl.avail_in = len; - buff->zctrl.next_in = (unsigned char *)src; - while ( buff->zctrl.avail_in > 0 ) { - /* - ** Extend the buffer prior to deflate call if a reasonable amount - ** of output buffer space is not available. - */ - min_accept = buff->zctrl.avail_in / DFLT_ZLIB_RATIO; - if ( buff->zctrl.avail_out <= min_accept ) { - if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) - return ( -1 ); - } - - z_err = deflate( &buff->zctrl, Z_NO_FLUSH ); - if ( z_err != Z_OK ) { - xmlChar msg[500]; - xmlStrPrintf(msg, 500, - "xmlZMemBuffAppend: %s %d %s - %d", - "Compression error while appending", - len, "bytes to buffer. ZLIB error", z_err ); - xmlIOErr(XML_IO_WRITE, (const char *) msg); - return ( -1 ); - } - } - - buff->crc = crc32( buff->crc, (unsigned char *)src, len ); - - return ( len ); -} - -/** - * xmlZMemBuffGetContent - * @buff: Compressed memory content buffer - * @data_ref: Pointer reference to point to compressed content - * - * Flushes the compression buffers, appends gzip file trailers and - * returns the compressed content and length of the compressed data. - * NOTE: The gzip trailer code here is plagiarized from zlib source. - * - * Returns the length of the compressed data or -1 on error. - */ -static int -xmlZMemBuffGetContent( xmlZMemBuffPtr buff, char ** data_ref ) { - - int zlgth = -1; - int z_err; - - if ( ( buff == NULL ) || ( data_ref == NULL ) ) - return ( -1 ); - - /* Need to loop until compression output buffers are flushed */ - - do - { - z_err = deflate( &buff->zctrl, Z_FINISH ); - if ( z_err == Z_OK ) { - /* In this case Z_OK means more buffer space needed */ - - if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) - return ( -1 ); - } - } - while ( z_err == Z_OK ); - - /* If the compression state is not Z_STREAM_END, some error occurred */ - - if ( z_err == Z_STREAM_END ) { - - /* Need to append the gzip data trailer */ - - if ( buff->zctrl.avail_out < ( 2 * sizeof( unsigned long ) ) ) { - if ( xmlZMemBuffExtend(buff, (2 * sizeof(unsigned long))) == -1 ) - return ( -1 ); - } - - /* - ** For whatever reason, the CRC and length data are pushed out - ** in reverse byte order. So a memcpy can't be used here. - */ - - append_reverse_ulong( buff, buff->crc ); - append_reverse_ulong( buff, buff->zctrl.total_in ); - - zlgth = buff->zctrl.next_out - buff->zbuff; - *data_ref = (char *)buff->zbuff; - } - - else { - xmlChar msg[500]; - xmlStrPrintf(msg, 500, - "xmlZMemBuffGetContent: %s - %d\n", - "Error flushing zlib buffers. Error code", z_err ); - xmlIOErr(XML_IO_WRITE, (const char *) msg); - } - - return ( zlgth ); -} -#endif /* LIBXML_OUTPUT_ENABLED */ -#endif /* HAVE_ZLIB_H */ - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlFreeHTTPWriteCtxt - * @ctxt: Context to cleanup - * - * Free allocated memory and reclaim system resources. - * - * No return value. - */ -static void -xmlFreeHTTPWriteCtxt( xmlIOHTTPWriteCtxtPtr ctxt ) -{ - if ( ctxt->uri != NULL ) - xmlFree( ctxt->uri ); - - if ( ctxt->doc_buff != NULL ) { - -#ifdef HAVE_ZLIB_H - if ( ctxt->compression > 0 ) { - xmlFreeZMemBuff( ctxt->doc_buff ); - } - else -#endif - { - xmlOutputBufferClose( ctxt->doc_buff ); - } - } - - xmlFree( ctxt ); - return; -} -#endif /* LIBXML_OUTPUT_ENABLED */ - - -/** - * xmlIOHTTPMatch: - * @filename: the URI for matching - * - * check if the URI matches an HTTP one - * - * Returns 1 if matches, 0 otherwise - */ -int -xmlIOHTTPMatch (const char *filename) { - if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "http://", 7)) - return(1); - return(0); -} - -/** - * xmlIOHTTPOpen: - * @filename: the URI for matching - * - * open an HTTP I/O channel - * - * Returns an I/O context or NULL in case of error - */ -void * -xmlIOHTTPOpen (const char *filename) { - return(xmlNanoHTTPOpen(filename, NULL)); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlIOHTTPOpenW: - * @post_uri: The destination URI for the document - * @compression: The compression desired for the document. - * - * Open a temporary buffer to collect the document for a subsequent HTTP POST - * request. Non-static as is called from the output buffer creation routine. - * - * Returns an I/O context or NULL in case of error. - */ - -void * -xmlIOHTTPOpenW(const char *post_uri, int compression) -{ - - xmlIOHTTPWriteCtxtPtr ctxt = NULL; - - if (post_uri == NULL) - return (NULL); - - ctxt = xmlMalloc(sizeof(xmlIOHTTPWriteCtxt)); - if (ctxt == NULL) { - xmlIOErrMemory("creating HTTP output context"); - return (NULL); - } - - (void) memset(ctxt, 0, sizeof(xmlIOHTTPWriteCtxt)); - - ctxt->uri = (char *) xmlStrdup((const xmlChar *)post_uri); - if (ctxt->uri == NULL) { - xmlIOErrMemory("copying URI"); - xmlFreeHTTPWriteCtxt(ctxt); - return (NULL); - } - - /* - * ** Since the document length is required for an HTTP post, - * ** need to put the document into a buffer. A memory buffer - * ** is being used to avoid pushing the data to disk and back. - */ - -#ifdef HAVE_ZLIB_H - if ((compression > 0) && (compression <= 9)) { - - ctxt->compression = compression; - ctxt->doc_buff = xmlCreateZMemBuff(compression); - } else -#endif - { - /* Any character conversions should have been done before this */ - - ctxt->doc_buff = xmlAllocOutputBufferInternal(NULL); - } - - if (ctxt->doc_buff == NULL) { - xmlFreeHTTPWriteCtxt(ctxt); - ctxt = NULL; - } - - return (ctxt); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlIOHTTPDfltOpenW - * @post_uri: The destination URI for this document. - * - * Calls xmlIOHTTPOpenW with no compression to set up for a subsequent - * HTTP post command. This function should generally not be used as - * the open callback is short circuited in xmlOutputBufferCreateFile. - * - * Returns a pointer to the new IO context. - */ -static void * -xmlIOHTTPDfltOpenW( const char * post_uri ) { - return ( xmlIOHTTPOpenW( post_uri, 0 ) ); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlIOHTTPRead: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to write - * - * Read @len bytes to @buffer from the I/O channel. - * - * Returns the number of bytes written - */ -int -xmlIOHTTPRead(void * context, char * buffer, int len) { - if ((buffer == NULL) || (len < 0)) return(-1); - return(xmlNanoHTTPRead(context, &buffer[0], len)); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlIOHTTPWrite - * @context: previously opened writing context - * @buffer: data to output to temporary buffer - * @len: bytes to output - * - * Collect data from memory buffer into a temporary file for later - * processing. - * - * Returns number of bytes written. - */ - -static int -xmlIOHTTPWrite( void * context, const char * buffer, int len ) { - - xmlIOHTTPWriteCtxtPtr ctxt = context; - - if ( ( ctxt == NULL ) || ( ctxt->doc_buff == NULL ) || ( buffer == NULL ) ) - return ( -1 ); - - if ( len > 0 ) { - - /* Use gzwrite or fwrite as previously setup in the open call */ - -#ifdef HAVE_ZLIB_H - if ( ctxt->compression > 0 ) - len = xmlZMemBuffAppend( ctxt->doc_buff, buffer, len ); - - else -#endif - len = xmlOutputBufferWrite( ctxt->doc_buff, len, buffer ); - - if ( len < 0 ) { - xmlChar msg[500]; - xmlStrPrintf(msg, 500, - "xmlIOHTTPWrite: %s\n%s '%s'.\n", - "Error appending to internal buffer.", - "Error sending document to URI", - ctxt->uri ); - xmlIOErr(XML_IO_WRITE, (const char *) msg); - } - } - - return ( len ); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - - -/** - * xmlIOHTTPClose: - * @context: the I/O context - * - * Close an HTTP I/O channel - * - * Returns 0 - */ -int -xmlIOHTTPClose (void * context) { - xmlNanoHTTPClose(context); - return 0; -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlIOHTTCloseWrite - * @context: The I/O context - * @http_mthd: The HTTP method to be used when sending the data - * - * Close the transmit HTTP I/O channel and actually send the data. - */ -static int -xmlIOHTTPCloseWrite( void * context, const char * http_mthd ) { - - int close_rc = -1; - int http_rtn = 0; - int content_lgth = 0; - xmlIOHTTPWriteCtxtPtr ctxt = context; - - char * http_content = NULL; - char * content_encoding = NULL; - char * content_type = (char *) "text/xml"; - void * http_ctxt = NULL; - - if ( ( ctxt == NULL ) || ( http_mthd == NULL ) ) - return ( -1 ); - - /* Retrieve the content from the appropriate buffer */ - -#ifdef HAVE_ZLIB_H - - if ( ctxt->compression > 0 ) { - content_lgth = xmlZMemBuffGetContent( ctxt->doc_buff, &http_content ); - content_encoding = (char *) "Content-Encoding: gzip"; - } - else -#endif - { - /* Pull the data out of the memory output buffer */ - - xmlOutputBufferPtr dctxt = ctxt->doc_buff; - http_content = (char *) xmlBufContent(dctxt->buffer); - content_lgth = xmlBufUse(dctxt->buffer); - } - - if ( http_content == NULL ) { - xmlChar msg[500]; - xmlStrPrintf(msg, 500, - "xmlIOHTTPCloseWrite: %s '%s' %s '%s'.\n", - "Error retrieving content.\nUnable to", - http_mthd, "data to URI", ctxt->uri ); - xmlIOErr(XML_IO_WRITE, (const char *) msg); - } - - else { - - http_ctxt = xmlNanoHTTPMethod( ctxt->uri, http_mthd, http_content, - &content_type, content_encoding, - content_lgth ); - - if ( http_ctxt != NULL ) { -#ifdef DEBUG_HTTP - /* If testing/debugging - dump reply with request content */ - - FILE * tst_file = NULL; - char buffer[ 4096 ]; - char * dump_name = NULL; - int avail; - - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPCloseWrite: HTTP %s to\n%s returned %d.\n", - http_mthd, ctxt->uri, - xmlNanoHTTPReturnCode( http_ctxt ) ); - - /* - ** Since either content or reply may be gzipped, - ** dump them to separate files instead of the - ** standard error context. - */ - - dump_name = tempnam( NULL, "lxml" ); - if ( dump_name != NULL ) { - (void)snprintf( buffer, sizeof(buffer), "%s.content", dump_name ); - - tst_file = fopen( buffer, "wb" ); - if ( tst_file != NULL ) { - xmlGenericError( xmlGenericErrorContext, - "Transmitted content saved in file: %s\n", buffer ); - - fwrite( http_content, sizeof( char ), - content_lgth, tst_file ); - fclose( tst_file ); - } - - (void)snprintf( buffer, sizeof(buffer), "%s.reply", dump_name ); - tst_file = fopen( buffer, "wb" ); - if ( tst_file != NULL ) { - xmlGenericError( xmlGenericErrorContext, - "Reply content saved in file: %s\n", buffer ); - - - while ( (avail = xmlNanoHTTPRead( http_ctxt, - buffer, sizeof( buffer ) )) > 0 ) { - - fwrite( buffer, sizeof( char ), avail, tst_file ); - } - - fclose( tst_file ); - } - - free( dump_name ); - } -#endif /* DEBUG_HTTP */ - - http_rtn = xmlNanoHTTPReturnCode( http_ctxt ); - if ( ( http_rtn >= 200 ) && ( http_rtn < 300 ) ) - close_rc = 0; - else { - xmlChar msg[500]; - xmlStrPrintf(msg, 500, - "xmlIOHTTPCloseWrite: HTTP '%s' of %d %s\n'%s' %s %d\n", - http_mthd, content_lgth, - "bytes to URI", ctxt->uri, - "failed. HTTP return code:", http_rtn ); - xmlIOErr(XML_IO_WRITE, (const char *) msg); - } - - xmlNanoHTTPClose( http_ctxt ); - xmlFree( content_type ); - } - } - - /* Final cleanups */ - - xmlFreeHTTPWriteCtxt( ctxt ); - - return ( close_rc ); -} - -/** - * xmlIOHTTPClosePut - * - * @context: The I/O context - * - * Close the transmit HTTP I/O channel and actually send data using a PUT - * HTTP method. - */ -static int -xmlIOHTTPClosePut( void * ctxt ) { - return ( xmlIOHTTPCloseWrite( ctxt, "PUT" ) ); -} - - -/** - * xmlIOHTTPClosePost - * - * @context: The I/O context - * - * Close the transmit HTTP I/O channel and actually send data using a POST - * HTTP method. - */ -static int -xmlIOHTTPClosePost( void * ctxt ) { - return ( xmlIOHTTPCloseWrite( ctxt, "POST" ) ); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -#endif /* LIBXML_HTTP_ENABLED */ - -#ifdef LIBXML_FTP_ENABLED -/************************************************************************ - * * - * I/O for FTP file accesses * - * * - ************************************************************************/ -/** - * xmlIOFTPMatch: - * @filename: the URI for matching - * - * check if the URI matches an FTP one - * - * Returns 1 if matches, 0 otherwise - */ -int -xmlIOFTPMatch (const char *filename) { - if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "ftp://", 6)) - return(1); - return(0); -} - -/** - * xmlIOFTPOpen: - * @filename: the URI for matching - * - * open an FTP I/O channel - * - * Returns an I/O context or NULL in case of error - */ -void * -xmlIOFTPOpen (const char *filename) { - return(xmlNanoFTPOpen(filename)); -} - -/** - * xmlIOFTPRead: - * @context: the I/O context - * @buffer: where to drop data - * @len: number of bytes to write - * - * Read @len bytes to @buffer from the I/O channel. - * - * Returns the number of bytes written - */ -int -xmlIOFTPRead(void * context, char * buffer, int len) { - if ((buffer == NULL) || (len < 0)) return(-1); - return(xmlNanoFTPRead(context, &buffer[0], len)); -} - -/** - * xmlIOFTPClose: - * @context: the I/O context - * - * Close an FTP I/O channel - * - * Returns 0 - */ -int -xmlIOFTPClose (void * context) { - return ( xmlNanoFTPClose(context) ); -} -#endif /* LIBXML_FTP_ENABLED */ - - -/** - * xmlRegisterInputCallbacks: - * @matchFunc: the xmlInputMatchCallback - * @openFunc: the xmlInputOpenCallback - * @readFunc: the xmlInputReadCallback - * @closeFunc: the xmlInputCloseCallback - * - * Register a new set of I/O callback for handling parser input. - * - * Returns the registered handler number or -1 in case of error - */ -int -xmlRegisterInputCallbacks(xmlInputMatchCallback matchFunc, - xmlInputOpenCallback openFunc, xmlInputReadCallback readFunc, - xmlInputCloseCallback closeFunc) { - if (xmlInputCallbackNr >= MAX_INPUT_CALLBACK) { - return(-1); - } - xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = matchFunc; - xmlInputCallbackTable[xmlInputCallbackNr].opencallback = openFunc; - xmlInputCallbackTable[xmlInputCallbackNr].readcallback = readFunc; - xmlInputCallbackTable[xmlInputCallbackNr].closecallback = closeFunc; - xmlInputCallbackInitialized = 1; - return(xmlInputCallbackNr++); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlRegisterOutputCallbacks: - * @matchFunc: the xmlOutputMatchCallback - * @openFunc: the xmlOutputOpenCallback - * @writeFunc: the xmlOutputWriteCallback - * @closeFunc: the xmlOutputCloseCallback - * - * Register a new set of I/O callback for handling output. - * - * Returns the registered handler number or -1 in case of error - */ -int -xmlRegisterOutputCallbacks(xmlOutputMatchCallback matchFunc, - xmlOutputOpenCallback openFunc, xmlOutputWriteCallback writeFunc, - xmlOutputCloseCallback closeFunc) { - if (xmlOutputCallbackNr >= MAX_OUTPUT_CALLBACK) { - return(-1); - } - xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = matchFunc; - xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = openFunc; - xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = writeFunc; - xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = closeFunc; - xmlOutputCallbackInitialized = 1; - return(xmlOutputCallbackNr++); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlRegisterDefaultInputCallbacks: - * - * Registers the default compiled-in I/O handlers. - */ -void -xmlRegisterDefaultInputCallbacks(void) { - if (xmlInputCallbackInitialized) - return; - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - xmlInitPlatformSpecificIo(); -#endif - - xmlRegisterInputCallbacks(xmlFileMatch, xmlFileOpen, - xmlFileRead, xmlFileClose); -#ifdef HAVE_ZLIB_H - xmlRegisterInputCallbacks(xmlGzfileMatch, xmlGzfileOpen, - xmlGzfileRead, xmlGzfileClose); -#endif /* HAVE_ZLIB_H */ -#ifdef LIBXML_LZMA_ENABLED - xmlRegisterInputCallbacks(xmlXzfileMatch, xmlXzfileOpen, - xmlXzfileRead, xmlXzfileClose); -#endif /* LIBXML_LZMA_ENABLED */ - -#ifdef LIBXML_HTTP_ENABLED - xmlRegisterInputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, - xmlIOHTTPRead, xmlIOHTTPClose); -#endif /* LIBXML_HTTP_ENABLED */ - -#ifdef LIBXML_FTP_ENABLED - xmlRegisterInputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, - xmlIOFTPRead, xmlIOFTPClose); -#endif /* LIBXML_FTP_ENABLED */ - xmlInputCallbackInitialized = 1; -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlRegisterDefaultOutputCallbacks: - * - * Registers the default compiled-in I/O handlers. - */ -void -xmlRegisterDefaultOutputCallbacks (void) { - if (xmlOutputCallbackInitialized) - return; - -#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__) - xmlInitPlatformSpecificIo(); -#endif - - xmlRegisterOutputCallbacks(xmlFileMatch, xmlFileOpenW, - xmlFileWrite, xmlFileClose); - -#ifdef LIBXML_HTTP_ENABLED - xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, - xmlIOHTTPWrite, xmlIOHTTPClosePut); -#endif - -/********************************* - No way a-priori to distinguish between gzipped files from - uncompressed ones except opening if existing then closing - and saving with same compression ratio ... a pain. - -#ifdef HAVE_ZLIB_H - xmlRegisterOutputCallbacks(xmlGzfileMatch, xmlGzfileOpen, - xmlGzfileWrite, xmlGzfileClose); -#endif - - Nor FTP PUT .... -#ifdef LIBXML_FTP_ENABLED - xmlRegisterOutputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, - xmlIOFTPWrite, xmlIOFTPClose); -#endif - **********************************/ - xmlOutputCallbackInitialized = 1; -} - -#ifdef LIBXML_HTTP_ENABLED -/** - * xmlRegisterHTTPPostCallbacks: - * - * By default, libxml submits HTTP output requests using the "PUT" method. - * Calling this method changes the HTTP output method to use the "POST" - * method instead. - * - */ -void -xmlRegisterHTTPPostCallbacks( void ) { - - /* Register defaults if not done previously */ - - if ( xmlOutputCallbackInitialized == 0 ) - xmlRegisterDefaultOutputCallbacks( ); - - xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, - xmlIOHTTPWrite, xmlIOHTTPClosePost); - return; -} -#endif -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlAllocParserInputBuffer: - * @enc: the charset encoding if known - * - * Create a buffered parser input for progressive parsing - * - * Returns the new parser input or NULL - */ -xmlParserInputBufferPtr -xmlAllocParserInputBuffer(xmlCharEncoding enc) { - xmlParserInputBufferPtr ret; - - ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); - if (ret == NULL) { - xmlIOErrMemory("creating input buffer"); - return(NULL); - } - memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); - ret->buffer = xmlBufCreateSize(2 * xmlDefaultBufferSize); - if (ret->buffer == NULL) { - xmlFree(ret); - return(NULL); - } - xmlBufSetAllocationScheme(ret->buffer, XML_BUFFER_ALLOC_DOUBLEIT); - ret->encoder = xmlGetCharEncodingHandler(enc); - if (ret->encoder != NULL) - ret->raw = xmlBufCreateSize(2 * xmlDefaultBufferSize); - else - ret->raw = NULL; - ret->readcallback = NULL; - ret->closecallback = NULL; - ret->context = NULL; - ret->compressed = -1; - ret->rawconsumed = 0; - - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlAllocOutputBuffer: - * @encoder: the encoding converter or NULL - * - * Create a buffered parser output - * - * Returns the new parser output or NULL - */ -xmlOutputBufferPtr -xmlAllocOutputBuffer(xmlCharEncodingHandlerPtr encoder) { - xmlOutputBufferPtr ret; - - ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); - if (ret == NULL) { - xmlIOErrMemory("creating output buffer"); - return(NULL); - } - memset(ret, 0, (size_t) sizeof(xmlOutputBuffer)); - ret->buffer = xmlBufCreate(); - if (ret->buffer == NULL) { - xmlFree(ret); - return(NULL); - } - - /* try to avoid a performance problem with Windows realloc() */ - if (xmlBufGetAllocationScheme(ret->buffer) == XML_BUFFER_ALLOC_EXACT) - xmlBufSetAllocationScheme(ret->buffer, XML_BUFFER_ALLOC_DOUBLEIT); - - ret->encoder = encoder; - if (encoder != NULL) { - ret->conv = xmlBufCreateSize(4000); - if (ret->conv == NULL) { - xmlFree(ret); - return(NULL); - } - - /* - * This call is designed to initiate the encoder state - */ - xmlCharEncOutput(ret, 1); - } else - ret->conv = NULL; - ret->writecallback = NULL; - ret->closecallback = NULL; - ret->context = NULL; - ret->written = 0; - - return(ret); -} - -/** - * xmlAllocOutputBufferInternal: - * @encoder: the encoding converter or NULL - * - * Create a buffered parser output - * - * Returns the new parser output or NULL - */ -xmlOutputBufferPtr -xmlAllocOutputBufferInternal(xmlCharEncodingHandlerPtr encoder) { - xmlOutputBufferPtr ret; - - ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); - if (ret == NULL) { - xmlIOErrMemory("creating output buffer"); - return(NULL); - } - memset(ret, 0, (size_t) sizeof(xmlOutputBuffer)); - ret->buffer = xmlBufCreate(); - if (ret->buffer == NULL) { - xmlFree(ret); - return(NULL); - } - - - /* - * For conversion buffers we use the special IO handling - */ - xmlBufSetAllocationScheme(ret->buffer, XML_BUFFER_ALLOC_IO); - - ret->encoder = encoder; - if (encoder != NULL) { - ret->conv = xmlBufCreateSize(4000); - if (ret->conv == NULL) { - xmlFree(ret); - return(NULL); - } - - /* - * This call is designed to initiate the encoder state - */ - xmlCharEncOutput(ret, 1); - } else - ret->conv = NULL; - ret->writecallback = NULL; - ret->closecallback = NULL; - ret->context = NULL; - ret->written = 0; - - return(ret); -} - -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlFreeParserInputBuffer: - * @in: a buffered parser input - * - * Free up the memory used by a buffered parser input - */ -void -xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) { - if (in == NULL) return; - - if (in->raw) { - xmlBufFree(in->raw); - in->raw = NULL; - } - if (in->encoder != NULL) { - xmlCharEncCloseFunc(in->encoder); - } - if (in->closecallback != NULL) { - in->closecallback(in->context); - } - if (in->buffer != NULL) { - xmlBufFree(in->buffer); - in->buffer = NULL; - } - - xmlFree(in); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlOutputBufferClose: - * @out: a buffered output - * - * flushes and close the output I/O channel - * and free up all the associated resources - * - * Returns the number of byte written or -1 in case of error. - */ -int -xmlOutputBufferClose(xmlOutputBufferPtr out) -{ - int written; - int err_rc = 0; - - if (out == NULL) - return (-1); - if (out->writecallback != NULL) - xmlOutputBufferFlush(out); - if (out->closecallback != NULL) { - err_rc = out->closecallback(out->context); - } - written = out->written; - if (out->conv) { - xmlBufFree(out->conv); - out->conv = NULL; - } - if (out->encoder != NULL) { - xmlCharEncCloseFunc(out->encoder); - } - if (out->buffer != NULL) { - xmlBufFree(out->buffer); - out->buffer = NULL; - } - - if (out->error) - err_rc = -1; - xmlFree(out); - return ((err_rc == 0) ? written : err_rc); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -xmlParserInputBufferPtr -__xmlParserInputBufferCreateFilename(const char *URI, xmlCharEncoding enc) { - xmlParserInputBufferPtr ret; - int i = 0; - void *context = NULL; - - if (xmlInputCallbackInitialized == 0) - xmlRegisterDefaultInputCallbacks(); - - if (URI == NULL) return(NULL); - - /* - * Try to find one of the input accept method accepting that scheme - * Go in reverse to give precedence to user defined handlers. - */ - if (context == NULL) { - for (i = xmlInputCallbackNr - 1;i >= 0;i--) { - if ((xmlInputCallbackTable[i].matchcallback != NULL) && - (xmlInputCallbackTable[i].matchcallback(URI) != 0)) { - context = xmlInputCallbackTable[i].opencallback(URI); - if (context != NULL) { - break; - } - } - } - } - if (context == NULL) { - return(NULL); - } - - /* - * Allocate the Input buffer front-end. - */ - ret = xmlAllocParserInputBuffer(enc); - if (ret != NULL) { - ret->context = context; - ret->readcallback = xmlInputCallbackTable[i].readcallback; - ret->closecallback = xmlInputCallbackTable[i].closecallback; -#ifdef HAVE_ZLIB_H - if ((xmlInputCallbackTable[i].opencallback == xmlGzfileOpen) && - (strcmp(URI, "-") != 0)) { -#if defined(ZLIB_VERNUM) && ZLIB_VERNUM >= 0x1230 - ret->compressed = !gzdirect(context); -#else - if (((z_stream *)context)->avail_in > 4) { - char *cptr, buff4[4]; - cptr = (char *) ((z_stream *)context)->next_in; - if (gzread(context, buff4, 4) == 4) { - if (strncmp(buff4, cptr, 4) == 0) - ret->compressed = 0; - else - ret->compressed = 1; - gzrewind(context); - } - } -#endif - } -#endif -#ifdef LIBXML_LZMA_ENABLED - if ((xmlInputCallbackTable[i].opencallback == xmlXzfileOpen) && - (strcmp(URI, "-") != 0)) { - ret->compressed = __libxml2_xzcompressed(context); - } -#endif - } - else - xmlInputCallbackTable[i].closecallback (context); - - return(ret); -} - -/** - * xmlParserInputBufferCreateFilename: - * @URI: a C string containing the URI or filename - * @enc: the charset encoding if known - * - * Create a buffered parser input for the progressive parsing of a file - * If filename is "-' then we use stdin as the input. - * Automatic support for ZLIB/Compress compressed document is provided - * by default if found at compile-time. - * Do an encoding check if enc == XML_CHAR_ENCODING_NONE - * - * Returns the new parser input or NULL - */ -xmlParserInputBufferPtr -xmlParserInputBufferCreateFilename(const char *URI, xmlCharEncoding enc) { - if ((xmlParserInputBufferCreateFilenameValue)) { - return xmlParserInputBufferCreateFilenameValue(URI, enc); - } - return __xmlParserInputBufferCreateFilename(URI, enc); -} - -#ifdef LIBXML_OUTPUT_ENABLED -xmlOutputBufferPtr -__xmlOutputBufferCreateFilename(const char *URI, - xmlCharEncodingHandlerPtr encoder, - int compression ATTRIBUTE_UNUSED) { - xmlOutputBufferPtr ret; - xmlURIPtr puri; - int i = 0; - void *context = NULL; - char *unescaped = NULL; -#ifdef HAVE_ZLIB_H - int is_file_uri = 1; -#endif - - if (xmlOutputCallbackInitialized == 0) - xmlRegisterDefaultOutputCallbacks(); - - if (URI == NULL) return(NULL); - - puri = xmlParseURI(URI); - if (puri != NULL) { -#ifdef HAVE_ZLIB_H - if ((puri->scheme != NULL) && - (!xmlStrEqual(BAD_CAST puri->scheme, BAD_CAST "file"))) - is_file_uri = 0; -#endif - /* - * try to limit the damages of the URI unescaping code. - */ - if ((puri->scheme == NULL) || - (xmlStrEqual(BAD_CAST puri->scheme, BAD_CAST "file"))) - unescaped = xmlURIUnescapeString(URI, 0, NULL); - xmlFreeURI(puri); - } - - /* - * Try to find one of the output accept method accepting that scheme - * Go in reverse to give precedence to user defined handlers. - * try with an unescaped version of the URI - */ - if (unescaped != NULL) { -#ifdef HAVE_ZLIB_H - if ((compression > 0) && (compression <= 9) && (is_file_uri == 1)) { - context = xmlGzfileOpenW(unescaped, compression); - if (context != NULL) { - ret = xmlAllocOutputBufferInternal(encoder); - if (ret != NULL) { - ret->context = context; - ret->writecallback = xmlGzfileWrite; - ret->closecallback = xmlGzfileClose; - } - xmlFree(unescaped); - return(ret); - } - } -#endif - for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { - if ((xmlOutputCallbackTable[i].matchcallback != NULL) && - (xmlOutputCallbackTable[i].matchcallback(unescaped) != 0)) { -#if defined(LIBXML_HTTP_ENABLED) && defined(HAVE_ZLIB_H) - /* Need to pass compression parameter into HTTP open calls */ - if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) - context = xmlIOHTTPOpenW(unescaped, compression); - else -#endif - context = xmlOutputCallbackTable[i].opencallback(unescaped); - if (context != NULL) - break; - } - } - xmlFree(unescaped); - } - - /* - * If this failed try with a non-escaped URI this may be a strange - * filename - */ - if (context == NULL) { -#ifdef HAVE_ZLIB_H - if ((compression > 0) && (compression <= 9) && (is_file_uri == 1)) { - context = xmlGzfileOpenW(URI, compression); - if (context != NULL) { - ret = xmlAllocOutputBufferInternal(encoder); - if (ret != NULL) { - ret->context = context; - ret->writecallback = xmlGzfileWrite; - ret->closecallback = xmlGzfileClose; - } - return(ret); - } - } -#endif - for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { - if ((xmlOutputCallbackTable[i].matchcallback != NULL) && - (xmlOutputCallbackTable[i].matchcallback(URI) != 0)) { -#if defined(LIBXML_HTTP_ENABLED) && defined(HAVE_ZLIB_H) - /* Need to pass compression parameter into HTTP open calls */ - if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) - context = xmlIOHTTPOpenW(URI, compression); - else -#endif - context = xmlOutputCallbackTable[i].opencallback(URI); - if (context != NULL) - break; - } - } - } - - if (context == NULL) { - return(NULL); - } - - /* - * Allocate the Output buffer front-end. - */ - ret = xmlAllocOutputBufferInternal(encoder); - if (ret != NULL) { - ret->context = context; - ret->writecallback = xmlOutputCallbackTable[i].writecallback; - ret->closecallback = xmlOutputCallbackTable[i].closecallback; - } - return(ret); -} - -/** - * xmlOutputBufferCreateFilename: - * @URI: a C string containing the URI or filename - * @encoder: the encoding converter or NULL - * @compression: the compression ration (0 none, 9 max). - * - * Create a buffered output for the progressive saving of a file - * If filename is "-' then we use stdout as the output. - * Automatic support for ZLIB/Compress compressed document is provided - * by default if found at compile-time. - * TODO: currently if compression is set, the library only support - * writing to a local file. - * - * Returns the new output or NULL - */ -xmlOutputBufferPtr -xmlOutputBufferCreateFilename(const char *URI, - xmlCharEncodingHandlerPtr encoder, - int compression ATTRIBUTE_UNUSED) { - if ((xmlOutputBufferCreateFilenameValue)) { - return xmlOutputBufferCreateFilenameValue(URI, encoder, compression); - } - return __xmlOutputBufferCreateFilename(URI, encoder, compression); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlParserInputBufferCreateFile: - * @file: a FILE* - * @enc: the charset encoding if known - * - * Create a buffered parser input for the progressive parsing of a FILE * - * buffered C I/O - * - * Returns the new parser input or NULL - */ -xmlParserInputBufferPtr -xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) { - xmlParserInputBufferPtr ret; - - if (xmlInputCallbackInitialized == 0) - xmlRegisterDefaultInputCallbacks(); - - if (file == NULL) return(NULL); - - ret = xmlAllocParserInputBuffer(enc); - if (ret != NULL) { - ret->context = file; - ret->readcallback = xmlFileRead; - ret->closecallback = xmlFileFlush; - } - - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlOutputBufferCreateFile: - * @file: a FILE* - * @encoder: the encoding converter or NULL - * - * Create a buffered output for the progressive saving to a FILE * - * buffered C I/O - * - * Returns the new parser output or NULL - */ -xmlOutputBufferPtr -xmlOutputBufferCreateFile(FILE *file, xmlCharEncodingHandlerPtr encoder) { - xmlOutputBufferPtr ret; - - if (xmlOutputCallbackInitialized == 0) - xmlRegisterDefaultOutputCallbacks(); - - if (file == NULL) return(NULL); - - ret = xmlAllocOutputBufferInternal(encoder); - if (ret != NULL) { - ret->context = file; - ret->writecallback = xmlFileWrite; - ret->closecallback = xmlFileFlush; - } - - return(ret); -} - -/** - * xmlOutputBufferCreateBuffer: - * @buffer: a xmlBufferPtr - * @encoder: the encoding converter or NULL - * - * Create a buffered output for the progressive saving to a xmlBuffer - * - * Returns the new parser output or NULL - */ -xmlOutputBufferPtr -xmlOutputBufferCreateBuffer(xmlBufferPtr buffer, - xmlCharEncodingHandlerPtr encoder) { - xmlOutputBufferPtr ret; - - if (buffer == NULL) return(NULL); - - ret = xmlOutputBufferCreateIO((xmlOutputWriteCallback) - xmlBufferWrite, - (xmlOutputCloseCallback) - NULL, (void *) buffer, encoder); - - return(ret); -} - -/** - * xmlOutputBufferGetContent: - * @out: an xmlOutputBufferPtr - * - * Gives a pointer to the data currently held in the output buffer - * - * Returns a pointer to the data or NULL in case of error - */ -const xmlChar * -xmlOutputBufferGetContent(xmlOutputBufferPtr out) { - if ((out == NULL) || (out->buffer == NULL)) - return(NULL); - - return(xmlBufContent(out->buffer)); -} - -/** - * xmlOutputBufferGetSize: - * @out: an xmlOutputBufferPtr - * - * Gives the length of the data currently held in the output buffer - * - * Returns 0 in case or error or no data is held, the size otherwise - */ -size_t -xmlOutputBufferGetSize(xmlOutputBufferPtr out) { - if ((out == NULL) || (out->buffer == NULL)) - return(0); - - return(xmlBufUse(out->buffer)); -} - - -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlParserInputBufferCreateFd: - * @fd: a file descriptor number - * @enc: the charset encoding if known - * - * Create a buffered parser input for the progressive parsing for the input - * from a file descriptor - * - * Returns the new parser input or NULL - */ -xmlParserInputBufferPtr -xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) { - xmlParserInputBufferPtr ret; - - if (fd < 0) return(NULL); - - ret = xmlAllocParserInputBuffer(enc); - if (ret != NULL) { - ret->context = (void *) (long) fd; - ret->readcallback = xmlFdRead; - ret->closecallback = xmlFdClose; - } - - return(ret); -} - -/** - * xmlParserInputBufferCreateMem: - * @mem: the memory input - * @size: the length of the memory block - * @enc: the charset encoding if known - * - * Create a buffered parser input for the progressive parsing for the input - * from a memory area. - * - * Returns the new parser input or NULL - */ -xmlParserInputBufferPtr -xmlParserInputBufferCreateMem(const char *mem, int size, xmlCharEncoding enc) { - xmlParserInputBufferPtr ret; - int errcode; - - if (size <= 0) return(NULL); - if (mem == NULL) return(NULL); - - ret = xmlAllocParserInputBuffer(enc); - if (ret != NULL) { - ret->context = (void *) mem; - ret->readcallback = (xmlInputReadCallback) xmlNop; - ret->closecallback = NULL; - errcode = xmlBufAdd(ret->buffer, (const xmlChar *) mem, size); - if (errcode != 0) { - xmlFree(ret); - return(NULL); - } - } - - return(ret); -} - -/** - * xmlParserInputBufferCreateStatic: - * @mem: the memory input - * @size: the length of the memory block - * @enc: the charset encoding if known - * - * Create a buffered parser input for the progressive parsing for the input - * from an immutable memory area. This will not copy the memory area to - * the buffer, but the memory is expected to be available until the end of - * the parsing, this is useful for example when using mmap'ed file. - * - * Returns the new parser input or NULL - */ -xmlParserInputBufferPtr -xmlParserInputBufferCreateStatic(const char *mem, int size, - xmlCharEncoding enc) { - xmlParserInputBufferPtr ret; - - if (size <= 0) return(NULL); - if (mem == NULL) return(NULL); - - ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); - if (ret == NULL) { - xmlIOErrMemory("creating input buffer"); - return(NULL); - } - memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); - ret->buffer = xmlBufCreateStatic((void *)mem, (size_t) size); - if (ret->buffer == NULL) { - xmlFree(ret); - return(NULL); - } - ret->encoder = xmlGetCharEncodingHandler(enc); - if (ret->encoder != NULL) - ret->raw = xmlBufCreateSize(2 * xmlDefaultBufferSize); - else - ret->raw = NULL; - ret->compressed = -1; - ret->context = (void *) mem; - ret->readcallback = NULL; - ret->closecallback = NULL; - - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlOutputBufferCreateFd: - * @fd: a file descriptor number - * @encoder: the encoding converter or NULL - * - * Create a buffered output for the progressive saving - * to a file descriptor - * - * Returns the new parser output or NULL - */ -xmlOutputBufferPtr -xmlOutputBufferCreateFd(int fd, xmlCharEncodingHandlerPtr encoder) { - xmlOutputBufferPtr ret; - - if (fd < 0) return(NULL); - - ret = xmlAllocOutputBufferInternal(encoder); - if (ret != NULL) { - ret->context = (void *) (long) fd; - ret->writecallback = xmlFdWrite; - ret->closecallback = NULL; - } - - return(ret); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlParserInputBufferCreateIO: - * @ioread: an I/O read function - * @ioclose: an I/O close function - * @ioctx: an I/O handler - * @enc: the charset encoding if known - * - * Create a buffered parser input for the progressive parsing for the input - * from an I/O handler - * - * Returns the new parser input or NULL - */ -xmlParserInputBufferPtr -xmlParserInputBufferCreateIO(xmlInputReadCallback ioread, - xmlInputCloseCallback ioclose, void *ioctx, xmlCharEncoding enc) { - xmlParserInputBufferPtr ret; - - if (ioread == NULL) return(NULL); - - ret = xmlAllocParserInputBuffer(enc); - if (ret != NULL) { - ret->context = (void *) ioctx; - ret->readcallback = ioread; - ret->closecallback = ioclose; - } - - return(ret); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlOutputBufferCreateIO: - * @iowrite: an I/O write function - * @ioclose: an I/O close function - * @ioctx: an I/O handler - * @encoder: the charset encoding if known - * - * Create a buffered output for the progressive saving - * to an I/O handler - * - * Returns the new parser output or NULL - */ -xmlOutputBufferPtr -xmlOutputBufferCreateIO(xmlOutputWriteCallback iowrite, - xmlOutputCloseCallback ioclose, void *ioctx, - xmlCharEncodingHandlerPtr encoder) { - xmlOutputBufferPtr ret; - - if (iowrite == NULL) return(NULL); - - ret = xmlAllocOutputBufferInternal(encoder); - if (ret != NULL) { - ret->context = (void *) ioctx; - ret->writecallback = iowrite; - ret->closecallback = ioclose; - } - - return(ret); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlParserInputBufferCreateFilenameDefault: - * @func: function pointer to the new ParserInputBufferCreateFilenameFunc - * - * Registers a callback for URI input file handling - * - * Returns the old value of the registration function - */ -xmlParserInputBufferCreateFilenameFunc -xmlParserInputBufferCreateFilenameDefault(xmlParserInputBufferCreateFilenameFunc func) -{ - xmlParserInputBufferCreateFilenameFunc old = xmlParserInputBufferCreateFilenameValue; - if (old == NULL) { - old = __xmlParserInputBufferCreateFilename; - } - - xmlParserInputBufferCreateFilenameValue = func; - return(old); -} - -/** - * xmlOutputBufferCreateFilenameDefault: - * @func: function pointer to the new OutputBufferCreateFilenameFunc - * - * Registers a callback for URI output file handling - * - * Returns the old value of the registration function - */ -xmlOutputBufferCreateFilenameFunc -xmlOutputBufferCreateFilenameDefault(xmlOutputBufferCreateFilenameFunc func) -{ - xmlOutputBufferCreateFilenameFunc old = xmlOutputBufferCreateFilenameValue; -#ifdef LIBXML_OUTPUT_ENABLED - if (old == NULL) { - old = __xmlOutputBufferCreateFilename; - } -#endif - xmlOutputBufferCreateFilenameValue = func; - return(old); -} - -/** - * xmlParserInputBufferPush: - * @in: a buffered parser input - * @len: the size in bytes of the array. - * @buf: an char array - * - * Push the content of the arry in the input buffer - * This routine handle the I18N transcoding to internal UTF-8 - * This is used when operating the parser in progressive (push) mode. - * - * Returns the number of chars read and stored in the buffer, or -1 - * in case of error. - */ -int -xmlParserInputBufferPush(xmlParserInputBufferPtr in, - int len, const char *buf) { - int nbchars = 0; - int ret; - - if (len < 0) return(0); - if ((in == NULL) || (in->error)) return(-1); - if (in->encoder != NULL) { - unsigned int use; - - /* - * Store the data in the incoming raw buffer - */ - if (in->raw == NULL) { - in->raw = xmlBufCreate(); - } - ret = xmlBufAdd(in->raw, (const xmlChar *) buf, len); - if (ret != 0) - return(-1); - - /* - * convert as much as possible to the parser reading buffer. - */ - use = xmlBufUse(in->raw); - nbchars = xmlCharEncInput(in, 1); - if (nbchars < 0) { - xmlIOErr(XML_IO_ENCODER, NULL); - in->error = XML_IO_ENCODER; - return(-1); - } - in->rawconsumed += (use - xmlBufUse(in->raw)); - } else { - nbchars = len; - ret = xmlBufAdd(in->buffer, (xmlChar *) buf, nbchars); - if (ret != 0) - return(-1); - } -#ifdef DEBUG_INPUT - xmlGenericError(xmlGenericErrorContext, - "I/O: pushed %d chars, buffer %d/%d\n", - nbchars, xmlBufUse(in->buffer), xmlBufLength(in->buffer)); -#endif - return(nbchars); -} - -/** - * endOfInput: - * - * When reading from an Input channel indicated end of file or error - * don't reread from it again. - */ -static int -endOfInput (void * context ATTRIBUTE_UNUSED, - char * buffer ATTRIBUTE_UNUSED, - int len ATTRIBUTE_UNUSED) { - return(0); -} - -/** - * xmlParserInputBufferGrow: - * @in: a buffered parser input - * @len: indicative value of the amount of chars to read - * - * Grow up the content of the input buffer, the old data are preserved - * This routine handle the I18N transcoding to internal UTF-8 - * This routine is used when operating the parser in normal (pull) mode - * - * TODO: one should be able to remove one extra copy by copying directly - * onto in->buffer or in->raw - * - * Returns the number of chars read and stored in the buffer, or -1 - * in case of error. - */ -int -xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) { - char *buffer = NULL; - int res = 0; - int nbchars = 0; - - if ((in == NULL) || (in->error)) return(-1); - if ((len <= MINLEN) && (len != 4)) - len = MINLEN; - - if (xmlBufAvail(in->buffer) <= 0) { - xmlIOErr(XML_IO_BUFFER_FULL, NULL); - in->error = XML_IO_BUFFER_FULL; - return(-1); - } - - if (xmlBufGrow(in->buffer, len + 1) < 0) { - xmlIOErrMemory("growing input buffer"); - in->error = XML_ERR_NO_MEMORY; - return(-1); - } - buffer = (char *)xmlBufEnd(in->buffer); - - /* - * Call the read method for this I/O type. - */ - if (in->readcallback != NULL) { - res = in->readcallback(in->context, &buffer[0], len); - if (res <= 0) - in->readcallback = endOfInput; - } else { - xmlIOErr(XML_IO_NO_INPUT, NULL); - in->error = XML_IO_NO_INPUT; - return(-1); - } - if (res < 0) { - return(-1); - } - - /* - * try to establish compressed status of input if not done already - */ - if (in->compressed == -1) { -#ifdef LIBXML_LZMA_ENABLED - if (in->readcallback == xmlXzfileRead) - in->compressed = __libxml2_xzcompressed(in->context); -#endif - } - - len = res; - if (in->encoder != NULL) { - unsigned int use; - - /* - * Store the data in the incoming raw buffer - */ - if (in->raw == NULL) { - in->raw = xmlBufCreate(); - } - res = xmlBufAdd(in->raw, (const xmlChar *) buffer, len); - if (res != 0) - return(-1); - - /* - * convert as much as possible to the parser reading buffer. - */ - use = xmlBufUse(in->raw); - nbchars = xmlCharEncInput(in, 1); - if (nbchars < 0) { - xmlIOErr(XML_IO_ENCODER, NULL); - in->error = XML_IO_ENCODER; - return(-1); - } - in->rawconsumed += (use - xmlBufUse(in->raw)); - } else { - nbchars = len; - xmlBufAddLen(in->buffer, nbchars); - } -#ifdef DEBUG_INPUT - xmlGenericError(xmlGenericErrorContext, - "I/O: read %d chars, buffer %d\n", - nbchars, xmlBufUse(in->buffer)); -#endif - return(nbchars); -} - -/** - * xmlParserInputBufferRead: - * @in: a buffered parser input - * @len: indicative value of the amount of chars to read - * - * Refresh the content of the input buffer, the old data are considered - * consumed - * This routine handle the I18N transcoding to internal UTF-8 - * - * Returns the number of chars read and stored in the buffer, or -1 - * in case of error. - */ -int -xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) { - if ((in == NULL) || (in->error)) return(-1); - if (in->readcallback != NULL) - return(xmlParserInputBufferGrow(in, len)); - else if (xmlBufGetAllocationScheme(in->buffer) == XML_BUFFER_ALLOC_IMMUTABLE) - return(0); - else - return(-1); -} - -#ifdef LIBXML_OUTPUT_ENABLED -/** - * xmlOutputBufferWrite: - * @out: a buffered parser output - * @len: the size in bytes of the array. - * @buf: an char array - * - * Write the content of the array in the output I/O buffer - * This routine handle the I18N transcoding from internal UTF-8 - * The buffer is lossless, i.e. will store in case of partial - * or delayed writes. - * - * Returns the number of chars immediately written, or -1 - * in case of error. - */ -int -xmlOutputBufferWrite(xmlOutputBufferPtr out, int len, const char *buf) { - int nbchars = 0; /* number of chars to output to I/O */ - int ret; /* return from function call */ - int written = 0; /* number of char written to I/O so far */ - int chunk; /* number of byte curreent processed from buf */ - - if ((out == NULL) || (out->error)) return(-1); - if (len < 0) return(0); - if (out->error) return(-1); - - do { - chunk = len; - if (chunk > 4 * MINLEN) - chunk = 4 * MINLEN; - - /* - * first handle encoding stuff. - */ - if (out->encoder != NULL) { - /* - * Store the data in the incoming raw buffer - */ - if (out->conv == NULL) { - out->conv = xmlBufCreate(); - } - ret = xmlBufAdd(out->buffer, (const xmlChar *) buf, chunk); - if (ret != 0) - return(-1); - - if ((xmlBufUse(out->buffer) < MINLEN) && (chunk == len)) - goto done; - - /* - * convert as much as possible to the parser reading buffer. - */ - ret = xmlCharEncOutput(out, 0); - if ((ret < 0) && (ret != -3)) { - xmlIOErr(XML_IO_ENCODER, NULL); - out->error = XML_IO_ENCODER; - return(-1); - } - nbchars = xmlBufUse(out->conv); - } else { - ret = xmlBufAdd(out->buffer, (const xmlChar *) buf, chunk); - if (ret != 0) - return(-1); - nbchars = xmlBufUse(out->buffer); - } - buf += chunk; - len -= chunk; - - if ((nbchars < MINLEN) && (len <= 0)) - goto done; - - if (out->writecallback) { - /* - * second write the stuff to the I/O channel - */ - if (out->encoder != NULL) { - ret = out->writecallback(out->context, - (const char *)xmlBufContent(out->conv), nbchars); - if (ret >= 0) - xmlBufShrink(out->conv, ret); - } else { - ret = out->writecallback(out->context, - (const char *)xmlBufContent(out->buffer), nbchars); - if (ret >= 0) - xmlBufShrink(out->buffer, ret); - } - if (ret < 0) { - xmlIOErr(XML_IO_WRITE, NULL); - out->error = XML_IO_WRITE; - return(ret); - } - out->written += ret; - } - written += nbchars; - } while (len > 0); - -done: -#ifdef DEBUG_INPUT - xmlGenericError(xmlGenericErrorContext, - "I/O: wrote %d chars\n", written); -#endif - return(written); -} - -/** - * xmlEscapeContent: - * @out: a pointer to an array of bytes to store the result - * @outlen: the length of @out - * @in: a pointer to an array of unescaped UTF-8 bytes - * @inlen: the length of @in - * - * Take a block of UTF-8 chars in and escape them. - * Returns 0 if success, or -1 otherwise - * The value of @inlen after return is the number of octets consumed - * if the return value is positive, else unpredictable. - * The value of @outlen after return is the number of octets consumed. - */ -static int -xmlEscapeContent(unsigned char* out, int *outlen, - const xmlChar* in, int *inlen) { - unsigned char* outstart = out; - const unsigned char* base = in; - unsigned char* outend = out + *outlen; - const unsigned char* inend; - - inend = in + (*inlen); - - while ((in < inend) && (out < outend)) { - if (*in == '<') { - if (outend - out < 4) break; - *out++ = '&'; - *out++ = 'l'; - *out++ = 't'; - *out++ = ';'; - } else if (*in == '>') { - if (outend - out < 4) break; - *out++ = '&'; - *out++ = 'g'; - *out++ = 't'; - *out++ = ';'; - } else if (*in == '&') { - if (outend - out < 5) break; - *out++ = '&'; - *out++ = 'a'; - *out++ = 'm'; - *out++ = 'p'; - *out++ = ';'; - } else if (*in == '\r') { - if (outend - out < 5) break; - *out++ = '&'; - *out++ = '#'; - *out++ = '1'; - *out++ = '3'; - *out++ = ';'; - } else { - *out++ = (unsigned char) *in; - } - ++in; - } - *outlen = out - outstart; - *inlen = in - base; - return(0); -} - -/** - * xmlOutputBufferWriteEscape: - * @out: a buffered parser output - * @str: a zero terminated UTF-8 string - * @escaping: an optional escaping function (or NULL) - * - * Write the content of the string in the output I/O buffer - * This routine escapes the caracters and then handle the I18N - * transcoding from internal UTF-8 - * The buffer is lossless, i.e. will store in case of partial - * or delayed writes. - * - * Returns the number of chars immediately written, or -1 - * in case of error. - */ -int -xmlOutputBufferWriteEscape(xmlOutputBufferPtr out, const xmlChar *str, - xmlCharEncodingOutputFunc escaping) { - int nbchars = 0; /* number of chars to output to I/O */ - int ret; /* return from function call */ - int written = 0; /* number of char written to I/O so far */ - int oldwritten=0;/* loop guard */ - int chunk; /* number of byte currently processed from str */ - int len; /* number of bytes in str */ - int cons; /* byte from str consumed */ - - if ((out == NULL) || (out->error) || (str == NULL) || - (out->buffer == NULL) || - (xmlBufGetAllocationScheme(out->buffer) == XML_BUFFER_ALLOC_IMMUTABLE)) - return(-1); - len = strlen((const char *)str); - if (len < 0) return(0); - if (out->error) return(-1); - if (escaping == NULL) escaping = xmlEscapeContent; - - do { - oldwritten = written; - - /* - * how many bytes to consume and how many bytes to store. - */ - cons = len; - chunk = xmlBufAvail(out->buffer) - 1; - - /* - * make sure we have enough room to save first, if this is - * not the case force a flush, but make sure we stay in the loop - */ - if (chunk < 40) { - if (xmlBufGrow(out->buffer, 100) < 0) - return(-1); - oldwritten = -1; - continue; - } - - /* - * first handle encoding stuff. - */ - if (out->encoder != NULL) { - /* - * Store the data in the incoming raw buffer - */ - if (out->conv == NULL) { - out->conv = xmlBufCreate(); - } - ret = escaping(xmlBufEnd(out->buffer) , - &chunk, str, &cons); - if ((ret < 0) || (chunk == 0)) /* chunk==0 => nothing done */ - return(-1); - xmlBufAddLen(out->buffer, chunk); - - if ((xmlBufUse(out->buffer) < MINLEN) && (cons == len)) - goto done; - - /* - * convert as much as possible to the output buffer. - */ - ret = xmlCharEncOutput(out, 0); - if ((ret < 0) && (ret != -3)) { - xmlIOErr(XML_IO_ENCODER, NULL); - out->error = XML_IO_ENCODER; - return(-1); - } - nbchars = xmlBufUse(out->conv); - } else { - ret = escaping(xmlBufEnd(out->buffer), &chunk, str, &cons); - if ((ret < 0) || (chunk == 0)) /* chunk==0 => nothing done */ - return(-1); - xmlBufAddLen(out->buffer, chunk); - nbchars = xmlBufUse(out->buffer); - } - str += cons; - len -= cons; - - if ((nbchars < MINLEN) && (len <= 0)) - goto done; - - if (out->writecallback) { - /* - * second write the stuff to the I/O channel - */ - if (out->encoder != NULL) { - ret = out->writecallback(out->context, - (const char *)xmlBufContent(out->conv), nbchars); - if (ret >= 0) - xmlBufShrink(out->conv, ret); - } else { - ret = out->writecallback(out->context, - (const char *)xmlBufContent(out->buffer), nbchars); - if (ret >= 0) - xmlBufShrink(out->buffer, ret); - } - if (ret < 0) { - xmlIOErr(XML_IO_WRITE, NULL); - out->error = XML_IO_WRITE; - return(ret); - } - out->written += ret; - } else if (xmlBufAvail(out->buffer) < MINLEN) { - xmlBufGrow(out->buffer, MINLEN); - } - written += nbchars; - } while ((len > 0) && (oldwritten != written)); - -done: -#ifdef DEBUG_INPUT - xmlGenericError(xmlGenericErrorContext, - "I/O: wrote %d chars\n", written); -#endif - return(written); -} - -/** - * xmlOutputBufferWriteString: - * @out: a buffered parser output - * @str: a zero terminated C string - * - * Write the content of the string in the output I/O buffer - * This routine handle the I18N transcoding from internal UTF-8 - * The buffer is lossless, i.e. will store in case of partial - * or delayed writes. - * - * Returns the number of chars immediately written, or -1 - * in case of error. - */ -int -xmlOutputBufferWriteString(xmlOutputBufferPtr out, const char *str) { - int len; - - if ((out == NULL) || (out->error)) return(-1); - if (str == NULL) - return(-1); - len = strlen(str); - - if (len > 0) - return(xmlOutputBufferWrite(out, len, str)); - return(len); -} - -/** - * xmlOutputBufferFlush: - * @out: a buffered output - * - * flushes the output I/O channel - * - * Returns the number of byte written or -1 in case of error. - */ -int -xmlOutputBufferFlush(xmlOutputBufferPtr out) { - int nbchars = 0, ret = 0; - - if ((out == NULL) || (out->error)) return(-1); - /* - * first handle encoding stuff. - */ - if ((out->conv != NULL) && (out->encoder != NULL)) { - /* - * convert as much as possible to the parser output buffer. - */ - do { - nbchars = xmlCharEncOutput(out, 0); - if (nbchars < 0) { - xmlIOErr(XML_IO_ENCODER, NULL); - out->error = XML_IO_ENCODER; - return(-1); - } - } while (nbchars); - } - - /* - * second flush the stuff to the I/O channel - */ - if ((out->conv != NULL) && (out->encoder != NULL) && - (out->writecallback != NULL)) { - ret = out->writecallback(out->context, - (const char *)xmlBufContent(out->conv), - xmlBufUse(out->conv)); - if (ret >= 0) - xmlBufShrink(out->conv, ret); - } else if (out->writecallback != NULL) { - ret = out->writecallback(out->context, - (const char *)xmlBufContent(out->buffer), - xmlBufUse(out->buffer)); - if (ret >= 0) - xmlBufShrink(out->buffer, ret); - } - if (ret < 0) { - xmlIOErr(XML_IO_FLUSH, NULL); - out->error = XML_IO_FLUSH; - return(ret); - } - out->written += ret; - -#ifdef DEBUG_INPUT - xmlGenericError(xmlGenericErrorContext, - "I/O: flushed %d chars\n", ret); -#endif - return(ret); -} -#endif /* LIBXML_OUTPUT_ENABLED */ - -/** - * xmlParserGetDirectory: - * @filename: the path to a file - * - * lookup the directory for that file - * - * Returns a new allocated string containing the directory, or NULL. - */ -char * -xmlParserGetDirectory(const char *filename) { - char *ret = NULL; - char dir[1024]; - char *cur; - -#ifdef _WIN32_WCE /* easy way by now ... wince does not have dirs! */ - return NULL; -#endif - - if (xmlInputCallbackInitialized == 0) - xmlRegisterDefaultInputCallbacks(); - - if (filename == NULL) return(NULL); - -#if defined(WIN32) && !defined(__CYGWIN__) -# define IS_XMLPGD_SEP(ch) ((ch=='/')||(ch=='\\')) -#else -# define IS_XMLPGD_SEP(ch) (ch=='/') -#endif - - strncpy(dir, filename, 1023); - dir[1023] = 0; - cur = &dir[strlen(dir)]; - while (cur > dir) { - if (IS_XMLPGD_SEP(*cur)) break; - cur --; - } - if (IS_XMLPGD_SEP(*cur)) { - if (cur == dir) dir[1] = 0; - else *cur = 0; - ret = xmlMemStrdup(dir); - } else { - if (getcwd(dir, 1024) != NULL) { - dir[1023] = 0; - ret = xmlMemStrdup(dir); - } - } - return(ret); -#undef IS_XMLPGD_SEP -} - -/**************************************************************** - * * - * External entities loading * - * * - ****************************************************************/ - -/** - * xmlCheckHTTPInput: - * @ctxt: an XML parser context - * @ret: an XML parser input - * - * Check an input in case it was created from an HTTP stream, in that - * case it will handle encoding and update of the base URL in case of - * redirection. It also checks for HTTP errors in which case the input - * is cleanly freed up and an appropriate error is raised in context - * - * Returns the input or NULL in case of HTTP error. - */ -xmlParserInputPtr -xmlCheckHTTPInput(xmlParserCtxtPtr ctxt, xmlParserInputPtr ret) { -#ifdef LIBXML_HTTP_ENABLED - if ((ret != NULL) && (ret->buf != NULL) && - (ret->buf->readcallback == xmlIOHTTPRead) && - (ret->buf->context != NULL)) { - const char *encoding; - const char *redir; - const char *mime; - int code; - - code = xmlNanoHTTPReturnCode(ret->buf->context); - if (code >= 400) { - /* fatal error */ - if (ret->filename != NULL) - __xmlLoaderErr(ctxt, "failed to load HTTP resource \"%s\"\n", - (const char *) ret->filename); - else - __xmlLoaderErr(ctxt, "failed to load HTTP resource\n", NULL); - xmlFreeInputStream(ret); - ret = NULL; - } else { - - mime = xmlNanoHTTPMimeType(ret->buf->context); - if ((xmlStrstr(BAD_CAST mime, BAD_CAST "/xml")) || - (xmlStrstr(BAD_CAST mime, BAD_CAST "+xml"))) { - encoding = xmlNanoHTTPEncoding(ret->buf->context); - if (encoding != NULL) { - xmlCharEncodingHandlerPtr handler; - - handler = xmlFindCharEncodingHandler(encoding); - if (handler != NULL) { - xmlSwitchInputEncoding(ctxt, ret, handler); - } else { - __xmlErrEncoding(ctxt, XML_ERR_UNKNOWN_ENCODING, - "Unknown encoding %s", - BAD_CAST encoding, NULL); - } - if (ret->encoding == NULL) - ret->encoding = xmlStrdup(BAD_CAST encoding); - } -#if 0 - } else if (xmlStrstr(BAD_CAST mime, BAD_CAST "html")) { -#endif - } - redir = xmlNanoHTTPRedir(ret->buf->context); - if (redir != NULL) { - if (ret->filename != NULL) - xmlFree((xmlChar *) ret->filename); - if (ret->directory != NULL) { - xmlFree((xmlChar *) ret->directory); - ret->directory = NULL; - } - ret->filename = - (char *) xmlStrdup((const xmlChar *) redir); - } - } - } -#endif - return(ret); -} - -static int xmlNoNetExists(const char *URL) { - const char *path; - - if (URL == NULL) - return(0); - - if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file://localhost/", 17)) -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &URL[17]; -#else - path = &URL[16]; -#endif - else if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file:///", 8)) { -#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__) - path = &URL[8]; -#else - path = &URL[7]; -#endif - } else - path = URL; - - return xmlCheckFilename(path); -} - -#ifdef LIBXML_CATALOG_ENABLED - -/** - * xmlResolveResourceFromCatalog: - * @URL: the URL for the entity to load - * @ID: the System ID for the entity to load - * @ctxt: the context in which the entity is called or NULL - * - * Resolves the URL and ID against the appropriate catalog. - * This function is used by xmlDefaultExternalEntityLoader and - * xmlNoNetExternalEntityLoader. - * - * Returns a new allocated URL, or NULL. - */ -static xmlChar * -xmlResolveResourceFromCatalog(const char *URL, const char *ID, - xmlParserCtxtPtr ctxt) { - xmlChar *resource = NULL; - xmlCatalogAllow pref; - - /* - * If the resource doesn't exists as a file, - * try to load it from the resource pointed in the catalogs - */ - pref = xmlCatalogGetDefaults(); - - if ((pref != XML_CATA_ALLOW_NONE) && (!xmlNoNetExists(URL))) { - /* - * Do a local lookup - */ - if ((ctxt != NULL) && (ctxt->catalogs != NULL) && - ((pref == XML_CATA_ALLOW_ALL) || - (pref == XML_CATA_ALLOW_DOCUMENT))) { - resource = xmlCatalogLocalResolve(ctxt->catalogs, - (const xmlChar *)ID, - (const xmlChar *)URL); - } - /* - * Try a global lookup - */ - if ((resource == NULL) && - ((pref == XML_CATA_ALLOW_ALL) || - (pref == XML_CATA_ALLOW_GLOBAL))) { - resource = xmlCatalogResolve((const xmlChar *)ID, - (const xmlChar *)URL); - } - if ((resource == NULL) && (URL != NULL)) - resource = xmlStrdup((const xmlChar *) URL); - - /* - * TODO: do an URI lookup on the reference - */ - if ((resource != NULL) && (!xmlNoNetExists((const char *)resource))) { - xmlChar *tmp = NULL; - - if ((ctxt != NULL) && (ctxt->catalogs != NULL) && - ((pref == XML_CATA_ALLOW_ALL) || - (pref == XML_CATA_ALLOW_DOCUMENT))) { - tmp = xmlCatalogLocalResolveURI(ctxt->catalogs, resource); - } - if ((tmp == NULL) && - ((pref == XML_CATA_ALLOW_ALL) || - (pref == XML_CATA_ALLOW_GLOBAL))) { - tmp = xmlCatalogResolveURI(resource); - } - - if (tmp != NULL) { - xmlFree(resource); - resource = tmp; - } - } - } - - return resource; -} - -#endif - -/** - * xmlDefaultExternalEntityLoader: - * @URL: the URL for the entity to load - * @ID: the System ID for the entity to load - * @ctxt: the context in which the entity is called or NULL - * - * By default we don't load external entitites, yet. - * - * Returns a new allocated xmlParserInputPtr, or NULL. - */ -static xmlParserInputPtr -xmlDefaultExternalEntityLoader(const char *URL, const char *ID, - xmlParserCtxtPtr ctxt) -{ - xmlParserInputPtr ret = NULL; - xmlChar *resource = NULL; - -#ifdef DEBUG_EXTERNAL_ENTITIES - xmlGenericError(xmlGenericErrorContext, - "xmlDefaultExternalEntityLoader(%s, xxx)\n", URL); -#endif - if ((ctxt != NULL) && (ctxt->options & XML_PARSE_NONET)) { - int options = ctxt->options; - - ctxt->options -= XML_PARSE_NONET; - ret = xmlNoNetExternalEntityLoader(URL, ID, ctxt); - ctxt->options = options; - return(ret); - } -#ifdef LIBXML_CATALOG_ENABLED - resource = xmlResolveResourceFromCatalog(URL, ID, ctxt); -#endif - - if (resource == NULL) - resource = (xmlChar *) URL; - - if (resource == NULL) { - if (ID == NULL) - ID = "NULL"; - __xmlLoaderErr(ctxt, "failed to load external entity \"%s\"\n", ID); - return (NULL); - } - ret = xmlNewInputFromFile(ctxt, (const char *) resource); - if ((resource != NULL) && (resource != (xmlChar *) URL)) - xmlFree(resource); - return (ret); -} - -static xmlExternalEntityLoader xmlCurrentExternalEntityLoader = - xmlDefaultExternalEntityLoader; - -/** - * xmlSetExternalEntityLoader: - * @f: the new entity resolver function - * - * Changes the defaultexternal entity resolver function for the application - */ -void -xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { - xmlCurrentExternalEntityLoader = f; -} - -/** - * xmlGetExternalEntityLoader: - * - * Get the default external entity resolver function for the application - * - * Returns the xmlExternalEntityLoader function pointer - */ -xmlExternalEntityLoader -xmlGetExternalEntityLoader(void) { - return(xmlCurrentExternalEntityLoader); -} - -/** - * xmlLoadExternalEntity: - * @URL: the URL for the entity to load - * @ID: the Public ID for the entity to load - * @ctxt: the context in which the entity is called or NULL - * - * Load an external entity, note that the use of this function for - * unparsed entities may generate problems - * - * Returns the xmlParserInputPtr or NULL - */ -xmlParserInputPtr -xmlLoadExternalEntity(const char *URL, const char *ID, - xmlParserCtxtPtr ctxt) { - if ((URL != NULL) && (xmlNoNetExists(URL) == 0)) { - char *canonicFilename; - xmlParserInputPtr ret; - - canonicFilename = (char *) xmlCanonicPath((const xmlChar *) URL); - if (canonicFilename == NULL) { - xmlIOErrMemory("building canonical path\n"); - return(NULL); - } - - ret = xmlCurrentExternalEntityLoader(canonicFilename, ID, ctxt); - xmlFree(canonicFilename); - return(ret); - } - return(xmlCurrentExternalEntityLoader(URL, ID, ctxt)); -} - -/************************************************************************ - * * - * Disabling Network access * - * * - ************************************************************************/ - -/** - * xmlNoNetExternalEntityLoader: - * @URL: the URL for the entity to load - * @ID: the System ID for the entity to load - * @ctxt: the context in which the entity is called or NULL - * - * A specific entity loader disabling network accesses, though still - * allowing local catalog accesses for resolution. - * - * Returns a new allocated xmlParserInputPtr, or NULL. - */ -xmlParserInputPtr -xmlNoNetExternalEntityLoader(const char *URL, const char *ID, - xmlParserCtxtPtr ctxt) { - xmlParserInputPtr input = NULL; - xmlChar *resource = NULL; - -#ifdef LIBXML_CATALOG_ENABLED - resource = xmlResolveResourceFromCatalog(URL, ID, ctxt); -#endif - - if (resource == NULL) - resource = (xmlChar *) URL; - - if (resource != NULL) { - if ((!xmlStrncasecmp(BAD_CAST resource, BAD_CAST "ftp://", 6)) || - (!xmlStrncasecmp(BAD_CAST resource, BAD_CAST "http://", 7))) { - xmlIOErr(XML_IO_NETWORK_ATTEMPT, (const char *) resource); - if (resource != (xmlChar *) URL) - xmlFree(resource); - return(NULL); - } - } - input = xmlDefaultExternalEntityLoader((const char *) resource, ID, ctxt); - if (resource != (xmlChar *) URL) - xmlFree(resource); - return(input); -} - -#define bottom_xmlIO -#include "elfgcchack.h" |