/
iconv.c
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/*
* OpenConnect (SSL + DTLS) VPN client
*
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* Copyright © 2008-2015 Intel Corporation.
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*
* Author: David Woodhouse <dwmw2@infradead.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1, as published by the Free Software Foundation.
*
* 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
* Lesser General Public License for more details.
*/
#include <config.h>
#include <iconv.h>
#include <errno.h>
#include <string.h>
#include "openconnect-internal.h"
static char *convert_str(struct openconnect_info *vpninfo, iconv_t ic,
char *instr)
{
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ICONV_CONST char *ic_in;
char *ic_out, *outstr;
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size_t insize, outsize;
int addq = 0;
if (ic == (iconv_t)-1)
return instr;
iconv(ic, NULL, NULL, NULL, NULL);
insize = strlen(instr) + 1;
ic_in = instr;
outsize = insize;
ic_out = outstr = malloc(outsize);
if (!outstr)
return instr;
while (insize) {
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if (iconv(ic, &ic_in, &insize, &ic_out, &outsize) == (size_t)-1) {
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if (errno == EILSEQ) {
do {
ic_in++;
insize--;
} while (insize && (ic_in[0] & 0xc0) == 0x80);
addq = 1;
}
if (!outsize || errno == E2BIG) {
int outlen = ic_out - outstr;
realloc_inplace(outstr, outlen + 10);
if (!outstr)
return instr;
ic_out = outstr + outlen;
outsize = 10;
} else if (errno != EILSEQ) {
/* Should never happen */
free(outstr);
return instr;
}
if (addq) {
addq = 0;
*(ic_out++) = '?';
outsize--;
}
}
}
return outstr;
}
char *openconnect_legacy_to_utf8(struct openconnect_info *vpninfo,
const char *legacy)
{
return convert_str(vpninfo, vpninfo->ic_legacy_to_utf8, (char *)legacy);
}
char *openconnect_utf8_to_legacy(struct openconnect_info *vpninfo,
const char *utf8)
{
return convert_str(vpninfo, vpninfo->ic_utf8_to_legacy, (char *)utf8);
}