| /*- |
| * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| * Redistribution and modifications are permitted subject to BSD license. |
| */ |
| #include <asn_internal.h> |
| #include <BMPString.h> |
| #include <UTF8String.h> |
| |
| /* |
| * BMPString basic type description. |
| */ |
| static ber_tlv_tag_t asn_DEF_BMPString_tags[] = { |
| (ASN_TAG_CLASS_UNIVERSAL | (30 << 2)), /* [UNIVERSAL 30] IMPLICIT ...*/ |
| (ASN_TAG_CLASS_UNIVERSAL | (4 << 2)) /* ... OCTET STRING */ |
| }; |
| static asn_OCTET_STRING_specifics_t asn_DEF_BMPString_specs = { |
| sizeof(BMPString_t), |
| offsetof(BMPString_t, _asn_ctx), |
| ASN_OSUBV_U16 /* 16-bits character */ |
| }; |
| static asn_per_constraints_t asn_DEF_BMPString_constraints = { |
| { APC_CONSTRAINED, 16, 16, 0, 65535 }, |
| { APC_SEMI_CONSTRAINED, -1, -1, 0, 0 }, |
| 0, 0 |
| }; |
| asn_TYPE_descriptor_t asn_DEF_BMPString = { |
| "BMPString", |
| "BMPString", |
| OCTET_STRING_free, /* Implemented in terms of OCTET STRING */ |
| BMPString_print, |
| asn_generic_no_constraint, /* No constraint by default */ |
| OCTET_STRING_decode_ber, |
| OCTET_STRING_encode_der, |
| BMPString_decode_xer, /* Convert from UTF-8 */ |
| BMPString_encode_xer, /* Convert to UTF-8 */ |
| OCTET_STRING_decode_uper, |
| OCTET_STRING_encode_uper, |
| 0, /* Use generic outmost tag fetcher */ |
| asn_DEF_BMPString_tags, |
| sizeof(asn_DEF_BMPString_tags) |
| / sizeof(asn_DEF_BMPString_tags[0]) - 1, |
| asn_DEF_BMPString_tags, |
| sizeof(asn_DEF_BMPString_tags) |
| / sizeof(asn_DEF_BMPString_tags[0]), |
| &asn_DEF_BMPString_constraints, |
| 0, 0, /* No members */ |
| &asn_DEF_BMPString_specs |
| }; |
| |
| /* |
| * BMPString specific contents printer. |
| */ |
| static ssize_t |
| BMPString__dump(const BMPString_t *st, |
| asn_app_consume_bytes_f *cb, void *app_key) { |
| char scratch[128]; /* Scratchpad buffer */ |
| char *p = scratch; |
| ssize_t wrote = 0; |
| uint8_t *ch; |
| uint8_t *end; |
| |
| ch = st->buf; |
| end = (st->buf + st->size); |
| for(end--; ch < end; ch += 2) { |
| uint16_t wc = (ch[0] << 8) | ch[1]; /* 2 bytes */ |
| if(sizeof(scratch) - (p - scratch) < 3) { |
| wrote += p - scratch; |
| if(cb(scratch, p - scratch, app_key) < 0) |
| return -1; |
| p = scratch; |
| } |
| if(wc < 0x80) { |
| *p++ = (char)wc; |
| } else if(wc < 0x800) { |
| *p++ = 0xc0 | ((wc >> 6)); |
| *p++ = 0x80 | ((wc & 0x3f)); |
| } else { |
| *p++ = 0xe0 | ((wc >> 12)); |
| *p++ = 0x80 | ((wc >> 6) & 0x3f); |
| *p++ = 0x80 | ((wc & 0x3f)); |
| } |
| } |
| |
| wrote += p - scratch; |
| if(cb(scratch, p - scratch, app_key) < 0) |
| return -1; |
| |
| return wrote; |
| } |
| |
| asn_dec_rval_t |
| BMPString_decode_xer(asn_codec_ctx_t *opt_codec_ctx, |
| asn_TYPE_descriptor_t *td, void **sptr, |
| const char *opt_mname, const void *buf_ptr, size_t size) { |
| asn_dec_rval_t rc; |
| |
| rc = OCTET_STRING_decode_xer_utf8(opt_codec_ctx, td, sptr, opt_mname, |
| buf_ptr, size); |
| if(rc.code == RC_OK) { |
| /* |
| * Now we have a whole string in UTF-8 format. |
| * Convert it into UCS-2. |
| */ |
| uint32_t *wcs; |
| size_t wcs_len; |
| UTF8String_t *st; |
| |
| assert(*sptr); |
| st = (UTF8String_t *)*sptr; |
| assert(st->buf); |
| wcs_len = UTF8String_to_wcs(st, 0, 0); |
| |
| wcs = (uint32_t *)MALLOC(4 * (wcs_len + 1)); |
| if(wcs == 0 || UTF8String_to_wcs(st, wcs, wcs_len) != wcs_len) { |
| rc.code = RC_FAIL; |
| rc.consumed = 0; |
| return rc; |
| } else { |
| wcs[wcs_len] = 0; /* nul-terminate */ |
| } |
| |
| if(1) { |
| /* Swap byte order and trim encoding to 2 bytes */ |
| uint32_t *wc = wcs; |
| uint32_t *wc_end = wcs + wcs_len; |
| uint16_t *dstwc = (uint16_t *)wcs; |
| for(; wc < wc_end; wc++, dstwc++) { |
| uint32_t wch = *wc; |
| if(wch > 0xffff) { |
| FREEMEM(wcs); |
| rc.code = RC_FAIL; |
| rc.consumed = 0; |
| return rc; |
| } |
| *((uint8_t *)dstwc + 0) = wch >> 8; |
| *((uint8_t *)dstwc + 1) = wch; |
| } |
| dstwc = (uint16_t *)REALLOC(wcs, 2 * (wcs_len + 1)); |
| if(!dstwc) { |
| FREEMEM(wcs); |
| rc.code = RC_FAIL; |
| rc.consumed = 0; |
| return rc; |
| } else { |
| dstwc[wcs_len] = 0; /* nul-terminate */ |
| wcs = (uint32_t *)dstwc; |
| } |
| } |
| |
| FREEMEM(st->buf); |
| st->buf = (uint8_t *)wcs; |
| st->size = 2 * wcs_len; |
| } |
| return rc; |
| } |
| |
| asn_enc_rval_t |
| BMPString_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, |
| int ilevel, enum xer_encoder_flags_e flags, |
| asn_app_consume_bytes_f *cb, void *app_key) { |
| const BMPString_t *st = (const BMPString_t *)sptr; |
| asn_enc_rval_t er; |
| |
| (void)ilevel; |
| (void)flags; |
| |
| if(!st || !st->buf) |
| _ASN_ENCODE_FAILED; |
| |
| er.encoded = BMPString__dump(st, cb, app_key); |
| if(er.encoded < 0) _ASN_ENCODE_FAILED; |
| |
| _ASN_ENCODED_OK(er); |
| } |
| |
| int |
| BMPString_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, |
| asn_app_consume_bytes_f *cb, void *app_key) { |
| const BMPString_t *st = (const BMPString_t *)sptr; |
| |
| (void)td; /* Unused argument */ |
| (void)ilevel; /* Unused argument */ |
| |
| if(!st || !st->buf) |
| return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
| |
| if(BMPString__dump(st, cb, app_key) < 0) |
| return -1; |
| |
| return 0; |
| } |
| |