/* * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include #include "internal/cryptlib.h" #include /* Cheap and nasty Unicode stuff */ unsigned char *OPENSSL_asc2uni(const char *asc, int asclen, unsigned char **uni, int *unilen) { int ulen, i; unsigned char *unitmp; if (asclen == -1) asclen = strlen(asc); ulen = asclen * 2 + 2; if ((unitmp = OPENSSL_malloc(ulen)) == NULL) return NULL; for (i = 0; i < ulen - 2; i += 2) { unitmp[i] = 0; unitmp[i + 1] = asc[i >> 1]; } /* Make result double null terminated */ unitmp[ulen - 2] = 0; unitmp[ulen - 1] = 0; if (unilen) *unilen = ulen; if (uni) *uni = unitmp; return unitmp; } char *OPENSSL_uni2asc(const unsigned char *uni, int unilen) { int asclen, i; char *asctmp; /* string must contain an even number of bytes */ if (unilen & 1) return NULL; asclen = unilen / 2; /* If no terminating zero allow for one */ if (!unilen || uni[unilen - 1]) asclen++; uni++; if ((asctmp = OPENSSL_malloc(asclen)) == NULL) return NULL; for (i = 0; i < unilen; i += 2) asctmp[i >> 1] = uni[i]; asctmp[asclen - 1] = 0; return asctmp; } /* * OPENSSL_{utf82uni|uni2utf8} perform conversion between UTF-8 and * PKCS#12 BMPString format, which is specified as big-endian UTF-16. * One should keep in mind that even though BMPString is passed as * unsigned char *, it's not the kind of string you can exercise e.g. * strlen on. Caller also has to keep in mind that its length is * expressed not in number of UTF-16 characters, but in number of * bytes the string occupies, and treat it, the length, accordingly. */ unsigned char *OPENSSL_utf82uni(const char *asc, int asclen, unsigned char **uni, int *unilen) { int ulen, i, j; unsigned char *unitmp, *ret; unsigned long utf32chr = 0; if (asclen == -1) asclen = strlen(asc); for (ulen = 0, i = 0; i < asclen; i += j) { j = UTF8_getc((const unsigned char *)asc+i, asclen-i, &utf32chr); /* * Following condition is somewhat opportunistic is sense that * decoding failure is used as *indirect* indication that input * string might in fact be extended ASCII/ANSI/ISO-8859-X. The * fallback is taken in hope that it would allow to process * files created with previous OpenSSL version, which used the * naive OPENSSL_asc2uni all along. It might be worth noting * that probability of false positive depends on language. In * cases covered by ISO Latin 1 probability is very low, because * any printable non-ASCII alphabet letter followed by another * or any ASCII character will trigger failure and fallback. * In other cases situation can be intensified by the fact that * English letters are not part of alternative keyboard layout, * but even then there should be plenty of pairs that trigger * decoding failure... */ if (j < 0) return OPENSSL_asc2uni(asc, asclen, uni, unilen); if (utf32chr > 0x10FFFF) /* UTF-16 cap */ return NULL; if (utf32chr >= 0x10000) /* pair of UTF-16 characters */ ulen += 2*2; else /* or just one */ ulen += 2; } ulen += 2; /* for trailing UTF16 zero */ if ((ret = OPENSSL_malloc(ulen)) == NULL) return NULL; /* re-run the loop writing down UTF-16 characters in big-endian order */ for (unitmp = ret, i = 0; i < asclen; i += j) { j = UTF8_getc((const unsigned char *)asc+i, asclen-i, &utf32chr); if (utf32chr >= 0x10000) { /* pair if UTF-16 characters */ unsigned int hi, lo; utf32chr -= 0x10000; hi = 0xD800 + (utf32chr>>10); lo = 0xDC00 + (utf32chr&0x3ff); *unitmp++ = (unsigned char)(hi>>8); *unitmp++ = (unsigned char)(hi); *unitmp++ = (unsigned char)(lo>>8); *unitmp++ = (unsigned char)(lo); } else { /* or just one */ *unitmp++ = (unsigned char)(utf32chr>>8); *unitmp++ = (unsigned char)(utf32chr); } } /* Make result double null terminated */ *unitmp++ = 0; *unitmp++ = 0; if (unilen) *unilen = ulen; if (uni) *uni = ret; return ret; } static int bmp_to_utf8(char *str, const unsigned char *utf16, int len) { unsigned long utf32chr; if (len == 0) return 0; if (len < 2) return -1; /* pull UTF-16 character in big-endian order */ utf32chr = (utf16[0]<<8) | utf16[1]; if (utf32chr >= 0xD800 && utf32chr < 0xE000) { /* two chars */ unsigned int lo; if (len < 4) return -1; utf32chr -= 0xD800; utf32chr <<= 10; lo = (utf16[2]<<8) | utf16[3]; if (lo < 0xDC00 || lo >= 0xE000) return -1; utf32chr |= lo-0xDC00; utf32chr += 0x10000; } return UTF8_putc((unsigned char *)str, len > 4 ? 4 : len, utf32chr); } char *OPENSSL_uni2utf8(const unsigned char *uni, int unilen) { int asclen, i, j; char *asctmp; /* string must contain an even number of bytes */ if (unilen & 1) return NULL; for (asclen = 0, i = 0; i < unilen; ) { j = bmp_to_utf8(NULL, uni+i, unilen-i); /* * falling back to OPENSSL_uni2asc makes lesser sense [than * falling back to OPENSSL_asc2uni in OPENSSL_utf82uni above], * it's done rather to maintain symmetry... */ if (j < 0) return OPENSSL_uni2asc(uni, unilen); if (j == 4) i += 4; else i += 2; asclen += j; } /* If no terminating zero allow for one */ if (!unilen || (uni[unilen-2]||uni[unilen - 1])) asclen++; if ((asctmp = OPENSSL_malloc(asclen)) == NULL) return NULL; /* re-run the loop emitting UTF-8 string */ for (asclen = 0, i = 0; i < unilen; ) { j = bmp_to_utf8(asctmp+asclen, uni+i, unilen-i); if (j == 4) i += 4; else i += 2; asclen += j; } /* If no terminating zero write one */ if (!unilen || (uni[unilen-2]||uni[unilen - 1])) asctmp[asclen] = '\0'; return asctmp; } int i2d_PKCS12_bio(BIO *bp, PKCS12 *p12) { return ASN1_item_i2d_bio(ASN1_ITEM_rptr(PKCS12), bp, p12); } #ifndef OPENSSL_NO_STDIO int i2d_PKCS12_fp(FILE *fp, PKCS12 *p12) { return ASN1_item_i2d_fp(ASN1_ITEM_rptr(PKCS12), fp, p12); } #endif PKCS12 *d2i_PKCS12_bio(BIO *bp, PKCS12 **p12) { return ASN1_item_d2i_bio(ASN1_ITEM_rptr(PKCS12), bp, p12); } #ifndef OPENSSL_NO_STDIO PKCS12 *d2i_PKCS12_fp(FILE *fp, PKCS12 **p12) { return ASN1_item_d2i_fp(ASN1_ITEM_rptr(PKCS12), fp, p12); } #endif