Move charset library to top level.

1 files changed, 0 insertions, 711 deletions

diff --git a/source4/lib/charset/iconv.c b/source4/lib/charset/iconv.c
deleted file mode 100644
index 150383e7f9..0000000000
--- a/source4/lib/charset/iconv.c
+++ /dev/null
@@ -1,711 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-   minimal iconv implementation
-   Copyright (C) Andrew Tridgell 2001
-   Copyright (C) Jelmer Vernooij 2002
-   
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-   
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-#include "../lib/util/dlinklist.h"
-#include "system/iconv.h"
-#include "system/filesys.h"
-#include "param/param.h"
-
-
-/**
- * @file
- *
- * @brief Samba wrapper/stub for iconv character set conversion.
- *
- * iconv is the XPG2 interface for converting between character
- * encodings.  This file provides a Samba wrapper around it, and also
- * a simple reimplementation that is used if the system does not
- * implement iconv.
- *
- * Samba only works with encodings that are supersets of ASCII: ascii
- * characters like whitespace can be tested for directly, multibyte
- * sequences start with a byte with the high bit set, and strings are
- * terminated by a nul byte.
- *
- * Note that the only function provided by iconv is conversion between
- * characters.  It doesn't directly support operations like
- * uppercasing or comparison.  We have to convert to UTF-16LE and
- * compare there.
- *
- * @sa Samba Developers Guide
- **/
-
-static size_t ascii_pull  (void *,const char **, size_t *, char **, size_t *);
-static size_t ascii_push  (void *,const char **, size_t *, char **, size_t *);
-static size_t utf8_pull   (void *,const char **, size_t *, char **, size_t *);
-static size_t utf8_push   (void *,const char **, size_t *, char **, size_t *);
-static size_t ucs2hex_pull(void *,const char **, size_t *, char **, size_t *);
-static size_t ucs2hex_push(void *,const char **, size_t *, char **, size_t *);
-static size_t iconv_copy  (void *,const char **, size_t *, char **, size_t *);
-static size_t iconv_swab  (void *,const char **, size_t *, char **, size_t *);
-
-static const struct charset_functions builtin_functions[] = {
-	/* windows is closest to UTF-16 */
-	{"UCS-2LE",  iconv_copy, iconv_copy},
-	{"UTF-16LE",  iconv_copy, iconv_copy},
-	{"UCS-2BE",  iconv_swab, iconv_swab},
-	{"UTF-16BE",  iconv_swab, iconv_swab},
-
-	/* we include the UTF-8 alias to cope with differing locale settings */
-	{"UTF8",   utf8_pull,  utf8_push},
-	{"UTF-8",   utf8_pull,  utf8_push},
-	{"ASCII", ascii_pull, ascii_push},
-	{"UCS2-HEX", ucs2hex_pull, ucs2hex_push}
-};
-
-static struct charset_functions *charsets = NULL;
-
-bool charset_register_backend(const void *_funcs) 
-{
-	struct charset_functions *funcs = (struct charset_functions *)memdup(_funcs,sizeof(struct charset_functions));
-	struct charset_functions *c;
-
-	/* Check whether we already have this charset... */
-	for (c = charsets; c != NULL; c = c->next) {
-		if(!strcasecmp(c->name, funcs->name)) { 
-			DEBUG(2, ("Duplicate charset %s, not registering\n", funcs->name));
-			return false;
-		}
-	}
-
-	funcs->next = funcs->prev = NULL;
-	DLIST_ADD(charsets, funcs);
-	return true;
-}
-
-#ifdef HAVE_NATIVE_ICONV
-/* if there was an error then reset the internal state,
-   this ensures that we don't have a shift state remaining for
-   character sets like SJIS */
-static size_t sys_iconv(void *cd, 
-			const char **inbuf, size_t *inbytesleft,
-			char **outbuf, size_t *outbytesleft)
-{
-	size_t ret = iconv((iconv_t)cd, 
-			   discard_const_p(char *, inbuf), inbytesleft, 
-			   outbuf, outbytesleft);
-	if (ret == (size_t)-1) iconv(cd, NULL, NULL, NULL, NULL);
-	return ret;
-}
-#endif
-
-/**
- * This is a simple portable iconv() implementaion.
- *
- * It only knows about a very small number of character sets - just
- * enough that Samba works on systems that don't have iconv.
- **/
-_PUBLIC_ size_t smb_iconv(smb_iconv_t cd, 
-		 const char **inbuf, size_t *inbytesleft,
-		 char **outbuf, size_t *outbytesleft)
-{
-	char cvtbuf[2048];
-	size_t bufsize;
-
-	/* in many cases we can go direct */
-	if (cd->direct) {
-		return cd->direct(cd->cd_direct, 
-				  inbuf, inbytesleft, outbuf, outbytesleft);
-	}
-
-
-	/* otherwise we have to do it chunks at a time */
-	while (*inbytesleft > 0) {
-		char *bufp1 = cvtbuf;
-		const char *bufp2 = cvtbuf;
-
-		bufsize = sizeof(cvtbuf);
-		
-		if (cd->pull(cd->cd_pull, 
-			     inbuf, inbytesleft, &bufp1, &bufsize) == -1
-		    && errno != E2BIG) return -1;
-
-		bufsize = sizeof(cvtbuf) - bufsize;
-
-		if (cd->push(cd->cd_push, 
-			     &bufp2, &bufsize, 
-			     outbuf, outbytesleft) == -1) return -1;
-	}
-
-	return 0;
-}
-
-static bool is_utf16(const char *name)
-{
-	return strcasecmp(name, "UCS-2LE") == 0 ||
-		strcasecmp(name, "UTF-16LE") == 0;
-}
-
-
-
-_PUBLIC_ smb_iconv_t smb_iconv_open_ex(TALLOC_CTX *mem_ctx, const char *tocode, 
-			      const char *fromcode, bool native_iconv)
-{
-	smb_iconv_t ret;
-	const struct charset_functions *from=NULL, *to=NULL;
-	int i;
-
-	ret = (smb_iconv_t)talloc_named(mem_ctx,
-					sizeof(*ret), 
-					"iconv(%s,%s)", tocode, fromcode);
-	if (!ret) {
-		errno = ENOMEM;
-		return (smb_iconv_t)-1;
-	}
-	memset(ret, 0, sizeof(*ret));
-
-	/* check for the simplest null conversion */
-	if (strcmp(fromcode, tocode) == 0) {
-		ret->direct = iconv_copy;
-		return ret;
-	}
-
-	for (i=0;i<ARRAY_SIZE(builtin_functions);i++) {
-		if (strcasecmp(fromcode, builtin_functions[i].name) == 0) {
-			from = &builtin_functions[i];
-		}
-		if (strcasecmp(tocode, builtin_functions[i].name) == 0) {
-			to = &builtin_functions[i];
-		}
-	}
-
-	if (from == NULL) {
-		for (from=charsets; from; from=from->next) {
-			if (strcasecmp(from->name, fromcode) == 0) break;
-		}
-	}
-
-	if (to == NULL) {
-		for (to=charsets; to; to=to->next) {
-			if (strcasecmp(to->name, tocode) == 0) break;
-		}
-	}
-
-#ifdef HAVE_NATIVE_ICONV
-	if ((!from || !to) && !native_iconv) {
-		goto failed;
-	}
-	if (!from) {
-		ret->pull = sys_iconv;
-		ret->cd_pull = iconv_open("UTF-16LE", fromcode);
-		if (ret->cd_pull == (iconv_t)-1)
-			ret->cd_pull = iconv_open("UCS-2LE", fromcode);
-		if (ret->cd_pull == (iconv_t)-1) goto failed;
-	}
-
-	if (!to) {
-		ret->push = sys_iconv;
-		ret->cd_push = iconv_open(tocode, "UTF-16LE");
-		if (ret->cd_push == (iconv_t)-1)
-			ret->cd_push = iconv_open(tocode, "UCS-2LE");
-		if (ret->cd_push == (iconv_t)-1) goto failed;
-	}
-#else
-	if (!from || !to) {
-		goto failed;
-	}
-#endif
-
-	/* check for conversion to/from ucs2 */
-	if (is_utf16(fromcode) && to) {
-		ret->direct = to->push;
-		return ret;
-	}
-	if (is_utf16(tocode) && from) {
-		ret->direct = from->pull;
-		return ret;
-	}
-
-#ifdef HAVE_NATIVE_ICONV
-	if (is_utf16(fromcode)) {
-		ret->direct = sys_iconv;
-		ret->cd_direct = ret->cd_push;
-		ret->cd_push = NULL;
-		return ret;
-	}
-	if (is_utf16(tocode)) {
-		ret->direct = sys_iconv;
-		ret->cd_direct = ret->cd_pull;
-		ret->cd_pull = NULL;
-		return ret;
-	}
-#endif
-
-	/* the general case has to go via a buffer */
-	if (!ret->pull) ret->pull = from->pull;
-	if (!ret->push) ret->push = to->push;
-	return ret;
-
-failed:
-	talloc_free(ret);
-	errno = EINVAL;
-	return (smb_iconv_t)-1;
-}
-
-/*
-  simple iconv_open() wrapper
- */
-_PUBLIC_ smb_iconv_t smb_iconv_open(const char *tocode, const char *fromcode)
-{
-	return smb_iconv_open_ex(NULL, tocode, fromcode, true);
-}
-
-/*
-  simple iconv_close() wrapper
-*/
-_PUBLIC_ int smb_iconv_close(smb_iconv_t cd)
-{
-#ifdef HAVE_NATIVE_ICONV
-	if (cd->cd_direct) iconv_close((iconv_t)cd->cd_direct);
-	if (cd->cd_pull) iconv_close((iconv_t)cd->cd_pull);
-	if (cd->cd_push) iconv_close((iconv_t)cd->cd_push);
-#endif
-
-	talloc_free(cd);
-	return 0;
-}
-
-
-/**********************************************************************
- the following functions implement the builtin character sets in Samba
- and also the "test" character sets that are designed to test
- multi-byte character set support for english users
-***********************************************************************/
-static size_t ascii_pull(void *cd, const char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	while (*inbytesleft >= 1 && *outbytesleft >= 2) {
-		(*outbuf)[0] = (*inbuf)[0];
-		(*outbuf)[1] = 0;
-		(*inbytesleft)  -= 1;
-		(*outbytesleft) -= 2;
-		(*inbuf)  += 1;
-		(*outbuf) += 2;
-	}
-
-	if (*inbytesleft > 0) {
-		errno = E2BIG;
-		return -1;
-	}
-	
-	return 0;
-}
-
-static size_t ascii_push(void *cd, const char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	int ir_count=0;
-
-	while (*inbytesleft >= 2 && *outbytesleft >= 1) {
-		(*outbuf)[0] = (*inbuf)[0] & 0x7F;
-		if ((*inbuf)[1]) ir_count++;
-		(*inbytesleft)  -= 2;
-		(*outbytesleft) -= 1;
-		(*inbuf)  += 2;
-		(*outbuf) += 1;
-	}
-
-	if (*inbytesleft == 1) {
-		errno = EINVAL;
-		return -1;
-	}
-
-	if (*inbytesleft > 1) {
-		errno = E2BIG;
-		return -1;
-	}
-	
-	return ir_count;
-}
-
-
-static size_t ucs2hex_pull(void *cd, const char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	while (*inbytesleft >= 1 && *outbytesleft >= 2) {
-		uint_t v;
-
-		if ((*inbuf)[0] != '@') {
-			/* seven bit ascii case */
-			(*outbuf)[0] = (*inbuf)[0];
-			(*outbuf)[1] = 0;
-			(*inbytesleft)  -= 1;
-			(*outbytesleft) -= 2;
-			(*inbuf)  += 1;
-			(*outbuf) += 2;
-			continue;
-		}
-		/* it's a hex character */
-		if (*inbytesleft < 5) {
-			errno = EINVAL;
-			return -1;
-		}
-		
-		if (sscanf(&(*inbuf)[1], "%04x", &v) != 1) {
-			errno = EILSEQ;
-			return -1;
-		}
-
-		(*outbuf)[0] = v&0xff;
-		(*outbuf)[1] = v>>8;
-		(*inbytesleft)  -= 5;
-		(*outbytesleft) -= 2;
-		(*inbuf)  += 5;
-		(*outbuf) += 2;
-	}
-
-	if (*inbytesleft > 0) {
-		errno = E2BIG;
-		return -1;
-	}
-	
-	return 0;
-}
-
-static size_t ucs2hex_push(void *cd, const char **inbuf, size_t *inbytesleft,
-			   char **outbuf, size_t *outbytesleft)
-{
-	while (*inbytesleft >= 2 && *outbytesleft >= 1) {
-		char buf[6];
-
-		if ((*inbuf)[1] == 0 && 
-		    ((*inbuf)[0] & 0x80) == 0 &&
-		    (*inbuf)[0] != '@') {
-			(*outbuf)[0] = (*inbuf)[0];
-			(*inbytesleft)  -= 2;
-			(*outbytesleft) -= 1;
-			(*inbuf)  += 2;
-			(*outbuf) += 1;
-			continue;
-		}
-		if (*outbytesleft < 5) {
-			errno = E2BIG;
-			return -1;
-		}
-		snprintf(buf, 6, "@%04x", SVAL(*inbuf, 0));
-		memcpy(*outbuf, buf, 5);
-		(*inbytesleft)  -= 2;
-		(*outbytesleft) -= 5;
-		(*inbuf)  += 2;
-		(*outbuf) += 5;
-	}
-
-	if (*inbytesleft == 1) {
-		errno = EINVAL;
-		return -1;
-	}
-
-	if (*inbytesleft > 1) {
-		errno = E2BIG;
-		return -1;
-	}
-	
-	return 0;
-}
-
-static size_t iconv_swab(void *cd, const char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	int n;
-
-	n = MIN(*inbytesleft, *outbytesleft);
-
-	swab(*inbuf, *outbuf, (n&~1));
-	if (n&1) {
-		(*outbuf)[n-1] = 0;
-	}
-
-	(*inbytesleft) -= n;
-	(*outbytesleft) -= n;
-	(*inbuf) += n;
-	(*outbuf) += n;
-
-	if (*inbytesleft > 0) {
-		errno = E2BIG;
-		return -1;
-	}
-
-	return 0;
-}
-
-
-static size_t iconv_copy(void *cd, const char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	int n;
-
-	n = MIN(*inbytesleft, *outbytesleft);
-
-	memmove(*outbuf, *inbuf, n);
-
-	(*inbytesleft) -= n;
-	(*outbytesleft) -= n;
-	(*inbuf) += n;
-	(*outbuf) += n;
-
-	if (*inbytesleft > 0) {
-		errno = E2BIG;
-		return -1;
-	}
-
-	return 0;
-}
-
-/*
-  this takes a UTF8 sequence and produces a UTF16 sequence
- */
-static size_t utf8_pull(void *cd, const char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	size_t in_left=*inbytesleft, out_left=*outbytesleft;
-	const uint8_t *c = (const uint8_t *)*inbuf;
-	uint8_t *uc = (uint8_t *)*outbuf;
-
-	while (in_left >= 1 && out_left >= 2) {
-		if ((c[0] & 0x80) == 0) {
-			uc[0] = c[0];
-			uc[1] = 0;
-			c  += 1;
-			in_left  -= 1;
-			out_left -= 2;
-			uc += 2;
-			continue;
-		}
-
-		if ((c[0] & 0xe0) == 0xc0) {
-			if (in_left < 2 ||
-			    (c[1] & 0xc0) != 0x80) {
-				errno = EILSEQ;
-				goto error;
-			}
-			uc[1] = (c[0]>>2) & 0x7;
-			uc[0] = (c[0]<<6) | (c[1]&0x3f);
-			c  += 2;
-			in_left  -= 2;
-			out_left -= 2;
-			uc += 2;
-			continue;
-		}
-
-		if ((c[0] & 0xf0) == 0xe0) {
-			if (in_left < 3 ||
-			    (c[1] & 0xc0) != 0x80 || 
-			    (c[2] & 0xc0) != 0x80) {
-				errno = EILSEQ;
-				goto error;
-			}
-			uc[1] = ((c[0]&0xF)<<4) | ((c[1]>>2)&0xF);
-			uc[0] = (c[1]<<6) | (c[2]&0x3f);
-			c  += 3;
-			in_left  -= 3;
-			out_left -= 2;
-			uc += 2;
-			continue;
-		}
-
-		if ((c[0] & 0xf8) == 0xf0) {
-			unsigned int codepoint;
-			if (in_left < 4 ||
-			    (c[1] & 0xc0) != 0x80 || 
-			    (c[2] & 0xc0) != 0x80 ||
-			    (c[3] & 0xc0) != 0x80) {
-				errno = EILSEQ;
-				goto error;
-			}
-			codepoint = 
-				(c[3]&0x3f) | 
-				((c[2]&0x3f)<<6) | 
-				((c[1]&0x3f)<<12) |
-				((c[0]&0x7)<<18);
-			if (codepoint < 0x10000) {
-				/* accept UTF-8 characters that are not
-				   minimally packed, but pack the result */
-				uc[0] = (codepoint & 0xFF);
-				uc[1] = (codepoint >> 8);
-				c += 4;
-				in_left -= 4;
-				out_left -= 2;
-				uc += 2;
-				continue;
-			}
-
-			codepoint -= 0x10000;
-
-			if (out_left < 4) {
-				errno = E2BIG;
-				goto error;
-			}
-
-			uc[0] = (codepoint>>10) & 0xFF;
-			uc[1] = (codepoint>>18) | 0xd8;
-			uc[2] = codepoint & 0xFF;
-			uc[3] = ((codepoint>>8) & 0x3) | 0xdc;
-			c  += 4;
-			in_left  -= 4;
-			out_left -= 4;
-			uc += 4;
-			continue;
-		}
-
-		/* we don't handle 5 byte sequences */
-		errno = EINVAL;
-		goto error;
-	}
-
-	if (in_left > 0) {
-		errno = E2BIG;
-		goto error;
-	}
-
-	*inbytesleft = in_left;
-	*outbytesleft = out_left;
-	*inbuf = (const char *)c;
-	*outbuf = (char *)uc;
-	return 0;
-
-error:
-	*inbytesleft = in_left;
-	*outbytesleft = out_left;
-	*inbuf = (const char *)c;
-	*outbuf = (char *)uc;
-	return -1;
-}
-
-
-/*
-  this takes a UTF16 sequence and produces a UTF8 sequence
- */
-static size_t utf8_push(void *cd, const char **inbuf, size_t *inbytesleft,
-			char **outbuf, size_t *outbytesleft)
-{
-	size_t in_left=*inbytesleft, out_left=*outbytesleft;
-	uint8_t *c = (uint8_t *)*outbuf;
-	const uint8_t *uc = (const uint8_t *)*inbuf;
-
-	while (in_left >= 2 && out_left >= 1) {
-		unsigned int codepoint;
-
-		if (uc[1] == 0 && !(uc[0] & 0x80)) {
-			/* simplest case */
-			c[0] = uc[0];
-			in_left  -= 2;
-			out_left -= 1;
-			uc += 2;
-			c  += 1;
-			continue;
-		}
-
-		if ((uc[1]&0xf8) == 0) {
-			/* next simplest case */
-			if (out_left < 2) {
-				errno = E2BIG;
-				goto error;
-			}
-			c[0] = 0xc0 | (uc[0]>>6) | (uc[1]<<2);
-			c[1] = 0x80 | (uc[0] & 0x3f);
-			in_left  -= 2;
-			out_left -= 2;
-			uc += 2;
-			c  += 2;
-			continue;
-		}
-
-		if ((uc[1] & 0xfc) == 0xdc) {
-			/* its the second part of a 4 byte sequence. Illegal */
-			if (in_left < 4) {
-				errno = EINVAL;
-			} else {
-				errno = EILSEQ;
-			}
-			goto error;
-		}
-
-		if ((uc[1] & 0xfc) != 0xd8) {
-			codepoint = uc[0] | (uc[1]<<8);
-			if (out_left < 3) {
-				errno = E2BIG;
-				goto error;
-			}
-			c[0] = 0xe0 | (codepoint >> 12);
-			c[1] = 0x80 | ((codepoint >> 6) & 0x3f);
-			c[2] = 0x80 | (codepoint & 0x3f);
-			
-			in_left  -= 2;
-			out_left -= 3;
-			uc  += 2;
-			c   += 3;
-			continue;
-		}
-
-		/* its the first part of a 4 byte sequence */
-		if (in_left < 4) {
-			errno = EINVAL;
-			goto error;
-		}
-		if ((uc[3] & 0xfc) != 0xdc) {
-			errno = EILSEQ;
-			goto error;
-		}
-		codepoint = 0x10000 + (uc[2] | ((uc[3] & 0x3)<<8) | 
-				       (uc[0]<<10) | ((uc[1] & 0x3)<<18));
-		
-		if (out_left < 4) {
-			errno = E2BIG;
-			goto error;
-		}
-		c[0] = 0xf0 | (codepoint >> 18);
-		c[1] = 0x80 | ((codepoint >> 12) & 0x3f);
-		c[2] = 0x80 | ((codepoint >> 6) & 0x3f);
-		c[3] = 0x80 | (codepoint & 0x3f);
-		
-		in_left  -= 4;
-		out_left -= 4;
-		uc       += 4;
-		c        += 4;
-	}
-
-	if (in_left == 1) {
-		errno = EINVAL;
-		goto error;
-	}
-
-	if (in_left > 1) {
-		errno = E2BIG;
-		goto error;
-	}
-
-	*inbytesleft = in_left;
-	*outbytesleft = out_left;
-	*inbuf  = (const char *)uc;
-	*outbuf = (char *)c;
-	
-	return 0;
-
-error:
-	*inbytesleft = in_left;
-	*outbytesleft = out_left;
-	*inbuf  = (const char *)uc;
-	*outbuf = (char *)c;
-	return -1;
-}
-
-
-