diff options
Diffstat (limited to 'source/lib/iconv.c')
| -rw-r--r-- | source/lib/iconv.c | 581 |
1 files changed, 0 insertions, 581 deletions
diff --git a/source/lib/iconv.c b/source/lib/iconv.c deleted file mode 100644 index 43350d93492..00000000000 --- a/source/lib/iconv.c +++ /dev/null @@ -1,581 +0,0 @@ -/* - Unix SMB/CIFS implementation. - minimal iconv implementation - Copyright (C) Andrew Tridgell 2001 - - 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 2 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, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "includes.h" - -static size_t ascii_pull(void *,char **, size_t *, char **, size_t *); -static size_t ascii_push(void *,char **, size_t *, char **, size_t *); -static size_t utf8_pull(void *,char **, size_t *, char **, size_t *); -static size_t utf8_push(void *,char **, size_t *, char **, size_t *); -static size_t weird_pull(void *,char **, size_t *, char **, size_t *); -static size_t weird_push(void *,char **, size_t *, char **, size_t *); -static size_t ucs2hex_pull(void *,char **, size_t *, char **, size_t *); -static size_t ucs2hex_push(void *,char **, size_t *, char **, size_t *); -static size_t iconv_copy(void *,char **, size_t *, char **, size_t *); - -/* - for each charset we have a function that pulls from that charset to - a ucs2 buffer, and a function that pushes to a ucs2 buffer -*/ -static struct { - char *name; - size_t (*pull)(void *, char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft); - size_t (*push)(void *, char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft); -} charsets[] = { - {"UCS-2LE", iconv_copy, iconv_copy}, - {"UTF8", utf8_pull, utf8_push}, - {"ASCII", ascii_pull, ascii_push}, - {"WEIRD", weird_pull, weird_push}, - {"UCS2-HEX", ucs2hex_pull, ucs2hex_push}, - {NULL, NULL, NULL} -}; - - -/* 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, - char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ -#ifdef HAVE_NATIVE_ICONV - size_t ret = iconv((iconv_t)cd, - inbuf, inbytesleft, - outbuf, outbytesleft); - if (ret == (size_t)-1) iconv(cd, NULL, NULL, NULL, NULL); - return ret; -#else - errno = EINVAL; - return -1; -#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 - */ -size_t smb_iconv(smb_iconv_t cd, - const char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - char cvtbuf[2048]; - char *bufp = cvtbuf; - size_t bufsize; - - /* in many cases we can go direct */ - if (cd->direct) { - return cd->direct(cd->cd_direct, - (char **)inbuf, inbytesleft, outbuf, outbytesleft); - } - - - /* otherwise we have to do it chunks at a time */ - while (*inbytesleft > 0) { - bufp = cvtbuf; - bufsize = sizeof(cvtbuf); - - if (cd->pull(cd->cd_pull, - (char **)inbuf, inbytesleft, &bufp, &bufsize) == -1 - && errno != E2BIG) return -1; - - bufp = cvtbuf; - bufsize = sizeof(cvtbuf) - bufsize; - - if (cd->push(cd->cd_push, - &bufp, &bufsize, - outbuf, outbytesleft) == -1) return -1; - } - - return 0; -} - -/* - simple iconv_open() wrapper - */ -smb_iconv_t smb_iconv_open(const char *tocode, const char *fromcode) -{ - smb_iconv_t ret; - int from, to; - - ret = (smb_iconv_t)malloc(sizeof(*ret)); - if (!ret) { - errno = ENOMEM; - return (smb_iconv_t)-1; - } - memset(ret, 0, sizeof(*ret)); - - ret->from_name = strdup(fromcode); - ret->to_name = strdup(tocode); - - /* check for the simplest null conversion */ - if (strcmp(fromcode, tocode) == 0) { - ret->direct = iconv_copy; - return ret; - } - - for (from=0; charsets[from].name; from++) { - if (strcasecmp(charsets[from].name, fromcode) == 0) break; - } - for (to=0; charsets[to].name; to++) { - if (strcasecmp(charsets[to].name, tocode) == 0) break; - } - -#ifdef HAVE_NATIVE_ICONV - if (!charsets[from].name) { - ret->pull = sys_iconv; - ret->cd_pull = iconv_open("UCS-2LE", fromcode); - if (ret->cd_pull == (iconv_t)-1) goto failed; - } - if (!charsets[to].name) { - ret->push = sys_iconv; - ret->cd_push = iconv_open(tocode, "UCS-2LE"); - if (ret->cd_push == (iconv_t)-1) goto failed; - } -#else - if (!charsets[from].name || !charsets[to].name) { - goto failed; - } -#endif - - /* check for conversion to/from ucs2 */ - if (from == 0 && charsets[to].name) { - ret->direct = charsets[to].push; - return ret; - } - if (to == 0 && charsets[from].name) { - ret->direct = charsets[from].pull; - return ret; - } - -#ifdef HAVE_NATIVE_ICONV - if (from == 0) { - ret->direct = sys_iconv; - ret->cd_direct = ret->cd_push; - ret->cd_push = NULL; - return ret; - } - if (to == 0) { - 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 = charsets[from].pull; - if (!ret->push) ret->push = charsets[to].push; - return ret; - -failed: - SAFE_FREE(ret); - errno = EINVAL; - return (smb_iconv_t)-1; -} - -/* - simple iconv_close() wrapper -*/ -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 - - SAFE_FREE(cd->from_name); - SAFE_FREE(cd->to_name); - - memset(cd, 0, sizeof(*cd)); - SAFE_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, 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, 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, char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - while (*inbytesleft >= 1 && *outbytesleft >= 2) { - unsigned 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, 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; -} - - -/* the "weird" character set is very useful for testing multi-byte - support and finding bugs. Don't use on a production system! -*/ -static struct { - char from; - char *to; - int len; -} weird_table[] = { - {'q', "^q^", 3}, - {'Q', "^Q^", 3}, - {0, NULL} -}; - -static size_t weird_pull(void *cd, char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - while (*inbytesleft >= 1 && *outbytesleft >= 2) { - int i; - int done = 0; - for (i=0;weird_table[i].from;i++) { - if (strncmp((*inbuf), - weird_table[i].to, - weird_table[i].len) == 0) { - if (*inbytesleft < weird_table[i].len) { - DEBUG(0,("ERROR: truncated weird string\n")); - /* smb_panic("weird_pull"); */ - - } else { - (*outbuf)[0] = weird_table[i].from; - (*outbuf)[1] = 0; - (*inbytesleft) -= weird_table[i].len; - (*outbytesleft) -= 2; - (*inbuf) += weird_table[i].len; - (*outbuf) += 2; - done = 1; - break; - } - } - } - if (done) continue; - (*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 weird_push(void *cd, char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - int ir_count=0; - - while (*inbytesleft >= 2 && *outbytesleft >= 1) { - int i; - int done=0; - for (i=0;weird_table[i].from;i++) { - if ((*inbuf)[0] == weird_table[i].from && - (*inbuf)[1] == 0) { - if (*outbytesleft < weird_table[i].len) { - DEBUG(0,("No room for weird character\n")); - /* smb_panic("weird_push"); */ - } else { - memcpy(*outbuf, weird_table[i].to, - weird_table[i].len); - (*inbytesleft) -= 2; - (*outbytesleft) -= weird_table[i].len; - (*inbuf) += 2; - (*outbuf) += weird_table[i].len; - done = 1; - break; - } - } - } - if (done) continue; - - (*outbuf)[0] = (*inbuf)[0]; - 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 iconv_copy(void *cd, 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; -} - -static size_t utf8_pull(void *cd, char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - while (*inbytesleft >= 1 && *outbytesleft >= 2) { - unsigned char *c = (unsigned char *)*inbuf; - unsigned char *uc = (unsigned char *)*outbuf; - int len = 1; - - if ((c[0] & 0x80) == 0) { - uc[0] = c[0]; - uc[1] = 0; - } else if ((c[0] & 0xf0) == 0xe0) { - if (*inbytesleft < 3) { - DEBUG(0,("short utf8 char\n")); - goto badseq; - } - uc[1] = ((c[0]&0xF)<<4) | ((c[1]>>2)&0xF); - uc[0] = (c[1]<<6) | (c[2]&0x3f); - len = 3; - } else if ((c[0] & 0xe0) == 0xc0) { - if (*inbytesleft < 2) { - DEBUG(0,("short utf8 char\n")); - goto badseq; - } - uc[1] = (c[0]>>2) & 0x7; - uc[0] = (c[0]<<6) | (c[1]&0x3f); - len = 2; - } - - (*inbuf) += len; - (*inbytesleft) -= len; - (*outbytesleft) -= 2; - (*outbuf) += 2; - } - - if (*inbytesleft > 0) { - errno = E2BIG; - return -1; - } - - return 0; - -badseq: - errno = EINVAL; - return -1; -} - -static size_t utf8_push(void *cd, char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - while (*inbytesleft >= 2 && *outbytesleft >= 1) { - unsigned char *c = (unsigned char *)*outbuf; - unsigned char *uc = (unsigned char *)*inbuf; - int len=1; - - if (uc[1] & 0xf8) { - if (*outbytesleft < 3) { - DEBUG(0,("short utf8 write\n")); - goto toobig; - } - c[0] = 0xe0 | (uc[1]>>4); - c[1] = 0x80 | ((uc[1]&0xF)<<2) | (uc[0]>>6); - c[2] = 0x80 | (uc[0]&0x3f); - len = 3; - } else if (uc[1] | (uc[0] & 0x80)) { - if (*outbytesleft < 2) { - DEBUG(0,("short utf8 write\n")); - goto toobig; - } - c[0] = 0xc0 | (uc[1]<<2) | (uc[0]>>6); - c[1] = 0x80 | (uc[0]&0x3f); - len = 2; - } else { - c[0] = uc[0]; - } - - - (*inbytesleft) -= 2; - (*outbytesleft) -= len; - (*inbuf) += 2; - (*outbuf) += len; - } - - if (*inbytesleft == 1) { - errno = EINVAL; - return -1; - } - - if (*inbytesleft > 1) { - errno = E2BIG; - return -1; - } - - return 0; - -toobig: - errno = E2BIG; - return -1; -} - |