--- /dev/null
+/*-
+ * Copyright (c) 2004, 2005, 2006 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+/*
+ * Read the NativeInteger.h for the explanation wrt. differences between
+ * INTEGER and NativeInteger.
+ * Basically, both are decoders and encoders of ASN.1 INTEGER type, but this
+ * implementation deals with the standard (machine-specific) representation
+ * of them instead of using the platform-independent buffer.
+ */
+#include <asn_internal.h>
+#include <NativeInteger.h>
+
+/*
+ * NativeInteger basic type description.
+ */
+static const ber_tlv_tag_t asn_DEF_NativeInteger_tags[] = {
+ (ASN_TAG_CLASS_UNIVERSAL | (2 << 2))
+};
+asn_TYPE_operation_t asn_OP_NativeInteger = {
+ NativeInteger_free,
+ NativeInteger_print,
+ NativeInteger_compare,
+ NativeInteger_decode_ber,
+ NativeInteger_encode_der,
+ NativeInteger_decode_xer,
+ NativeInteger_encode_xer,
+#ifdef ASN_DISABLE_OER_SUPPORT
+ 0,
+ 0,
+#else
+ NativeInteger_decode_oer, /* OER decoder */
+ NativeInteger_encode_oer, /* Canonical OER encoder */
+#endif /* ASN_DISABLE_OER_SUPPORT */
+#ifdef ASN_DISABLE_PER_SUPPORT
+ 0,
+ 0,
+ 0,
+ 0,
+#else
+ NativeInteger_decode_uper, /* Unaligned PER decoder */
+ NativeInteger_encode_uper, /* Unaligned PER encoder */
+ NativeInteger_decode_aper, /* Aligned PER decoder */
+ NativeInteger_encode_aper, /* Aligned PER encoder */
+#endif /* ASN_DISABLE_PER_SUPPORT */
+ NativeInteger_random_fill,
+ 0 /* Use generic outmost tag fetcher */
+};
+asn_TYPE_descriptor_t asn_DEF_NativeInteger = {
+ "INTEGER", /* The ASN.1 type is still INTEGER */
+ "INTEGER",
+ &asn_OP_NativeInteger,
+ asn_DEF_NativeInteger_tags,
+ sizeof(asn_DEF_NativeInteger_tags) / sizeof(asn_DEF_NativeInteger_tags[0]),
+ asn_DEF_NativeInteger_tags, /* Same as above */
+ sizeof(asn_DEF_NativeInteger_tags) / sizeof(asn_DEF_NativeInteger_tags[0]),
+ { 0, 0, asn_generic_no_constraint },
+ 0, 0, /* No members */
+ 0 /* No specifics */
+};
+
+/*
+ * Decode INTEGER type.
+ */
+asn_dec_rval_t
+NativeInteger_decode_ber(const asn_codec_ctx_t *opt_codec_ctx,
+ const asn_TYPE_descriptor_t *td, void **nint_ptr,
+ const void *buf_ptr, size_t size, int tag_mode) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ long *native = (long *)*nint_ptr;
+ asn_dec_rval_t rval;
+ ber_tlv_len_t length;
+
+ /*
+ * If the structure is not there, allocate it.
+ */
+ if(native == NULL) {
+ native = (long *)(*nint_ptr = CALLOC(1, sizeof(*native)));
+ if(native == NULL) {
+ rval.code = RC_FAIL;
+ rval.consumed = 0;
+ return rval;
+ }
+ }
+
+ ASN_DEBUG("Decoding %s as INTEGER (tm=%d)",
+ td->name, tag_mode);
+
+ /*
+ * Check tags.
+ */
+ rval = ber_check_tags(opt_codec_ctx, td, 0, buf_ptr, size,
+ tag_mode, 0, &length, 0);
+ if(rval.code != RC_OK)
+ return rval;
+
+ ASN_DEBUG("%s length is %d bytes", td->name, (int)length);
+
+ /*
+ * Make sure we have this length.
+ */
+ buf_ptr = ((const char *)buf_ptr) + rval.consumed;
+ size -= rval.consumed;
+ if(length > (ber_tlv_len_t)size) {
+ rval.code = RC_WMORE;
+ rval.consumed = 0;
+ return rval;
+ }
+
+ /*
+ * ASN.1 encoded INTEGER: buf_ptr, length
+ * Fill the native, at the same time checking for overflow.
+ * If overflow occured, return with RC_FAIL.
+ */
+ {
+ INTEGER_t tmp;
+ union {
+ const void *constbuf;
+ void *nonconstbuf;
+ } unconst_buf;
+ long l;
+
+ unconst_buf.constbuf = buf_ptr;
+ tmp.buf = (uint8_t *)unconst_buf.nonconstbuf;
+ tmp.size = length;
+
+ if((specs&&specs->field_unsigned)
+ ? asn_INTEGER2ulong(&tmp, (unsigned long *)&l) /* sic */
+ : asn_INTEGER2long(&tmp, &l)) {
+ rval.code = RC_FAIL;
+ rval.consumed = 0;
+ return rval;
+ }
+
+ *native = l;
+ }
+
+ rval.code = RC_OK;
+ rval.consumed += length;
+
+ ASN_DEBUG("Took %ld/%ld bytes to encode %s (%ld)",
+ (long)rval.consumed, (long)length, td->name, (long)*native);
+
+ return rval;
+}
+
+/*
+ * Encode the NativeInteger using the standard INTEGER type DER encoder.
+ */
+asn_enc_rval_t
+NativeInteger_encode_der(const asn_TYPE_descriptor_t *sd, const void *ptr,
+ int tag_mode, ber_tlv_tag_t tag,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ unsigned long native = *(const unsigned long *)ptr; /* Disable sign ext. */
+ asn_enc_rval_t erval = {0,0,0};
+ INTEGER_t tmp;
+
+#ifdef WORDS_BIGENDIAN /* Opportunistic optimization */
+
+ tmp.buf = (uint8_t *)&native;
+ tmp.size = sizeof(native);
+
+#else /* Works even if WORDS_BIGENDIAN is not set where should've been */
+ uint8_t buf[sizeof(native)];
+ uint8_t *p;
+
+ /* Prepare a fake INTEGER */
+ for(p = buf + sizeof(buf) - 1; p >= buf; p--, native >>= 8)
+ *p = (uint8_t)native;
+
+ tmp.buf = buf;
+ tmp.size = sizeof(buf);
+#endif /* WORDS_BIGENDIAN */
+
+ /* Encode fake INTEGER */
+ erval = INTEGER_encode_der(sd, &tmp, tag_mode, tag, cb, app_key);
+ if(erval.structure_ptr == &tmp) {
+ erval.structure_ptr = ptr;
+ }
+ return erval;
+}
+
+/*
+ * Decode the chunk of XML text encoding INTEGER.
+ */
+asn_dec_rval_t
+NativeInteger_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
+ const asn_TYPE_descriptor_t *td, void **sptr,
+ const char *opt_mname, const void *buf_ptr,
+ size_t size) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_dec_rval_t rval;
+ INTEGER_t st;
+ void *st_ptr = (void *)&st;
+ long *native = (long *)*sptr;
+
+ if(!native) {
+ native = (long *)(*sptr = CALLOC(1, sizeof(*native)));
+ if(!native) ASN__DECODE_FAILED;
+ }
+
+ memset(&st, 0, sizeof(st));
+ rval = INTEGER_decode_xer(opt_codec_ctx, td, &st_ptr,
+ opt_mname, buf_ptr, size);
+ if(rval.code == RC_OK) {
+ long l;
+ if((specs&&specs->field_unsigned)
+ ? asn_INTEGER2ulong(&st, (unsigned long *)&l) /* sic */
+ : asn_INTEGER2long(&st, &l)) {
+ rval.code = RC_FAIL;
+ rval.consumed = 0;
+ } else {
+ *native = l;
+ }
+ } else {
+ /*
+ * Cannot restart from the middle;
+ * there is no place to save state in the native type.
+ * Request a continuation from the very beginning.
+ */
+ rval.consumed = 0;
+ }
+ ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &st);
+ return rval;
+}
+
+
+asn_enc_rval_t
+NativeInteger_encode_xer(const asn_TYPE_descriptor_t *td, const void *sptr,
+ int ilevel, enum xer_encoder_flags_e flags,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ char scratch[32]; /* Enough for 64-bit int */
+ asn_enc_rval_t er = {0,0,0};
+ const long *native = (const long *)sptr;
+
+ (void)ilevel;
+ (void)flags;
+
+ if(!native) ASN__ENCODE_FAILED;
+
+ er.encoded = snprintf(scratch, sizeof(scratch),
+ (specs && specs->field_unsigned)
+ ? "%lu" : "%ld", *native);
+ if(er.encoded <= 0 || (size_t)er.encoded >= sizeof(scratch)
+ || cb(scratch, er.encoded, app_key) < 0)
+ ASN__ENCODE_FAILED;
+
+ ASN__ENCODED_OK(er);
+}
+
+#ifndef ASN_DISABLE_PER_SUPPORT
+
+asn_dec_rval_t
+NativeInteger_decode_uper(const asn_codec_ctx_t *opt_codec_ctx,
+ const asn_TYPE_descriptor_t *td,
+ const asn_per_constraints_t *constraints, void **sptr,
+ asn_per_data_t *pd) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_dec_rval_t rval;
+ long *native = (long *)*sptr;
+ INTEGER_t tmpint;
+ void *tmpintptr = &tmpint;
+
+ (void)opt_codec_ctx;
+ ASN_DEBUG("Decoding NativeInteger %s (UPER)", td->name);
+
+ if(!native) {
+ native = (long *)(*sptr = CALLOC(1, sizeof(*native)));
+ if(!native) ASN__DECODE_FAILED;
+ }
+
+ memset(&tmpint, 0, sizeof tmpint);
+ rval = INTEGER_decode_uper(opt_codec_ctx, td, constraints,
+ &tmpintptr, pd);
+ if(rval.code == RC_OK) {
+ if((specs&&specs->field_unsigned)
+ ? asn_INTEGER2ulong(&tmpint, (unsigned long *)native)
+ : asn_INTEGER2long(&tmpint, native))
+ rval.code = RC_FAIL;
+ else
+ ASN_DEBUG("NativeInteger %s got value %ld",
+ td->name, *native);
+ }
+ ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+
+ return rval;
+}
+
+asn_enc_rval_t
+NativeInteger_encode_uper(const asn_TYPE_descriptor_t *td,
+ const asn_per_constraints_t *constraints,
+ const void *sptr, asn_per_outp_t *po) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_enc_rval_t er = {0,0,0};
+ long native;
+ INTEGER_t tmpint;
+
+ if(!sptr) ASN__ENCODE_FAILED;
+
+ native = *(const long *)sptr;
+
+ ASN_DEBUG("Encoding NativeInteger %s %ld (UPER)", td->name, native);
+
+ memset(&tmpint, 0, sizeof(tmpint));
+ if((specs&&specs->field_unsigned)
+ ? asn_ulong2INTEGER(&tmpint, native)
+ : asn_long2INTEGER(&tmpint, native))
+ ASN__ENCODE_FAILED;
+ er = INTEGER_encode_uper(td, constraints, &tmpint, po);
+ ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+ return er;
+}
+
+asn_dec_rval_t
+NativeInteger_decode_aper(const asn_codec_ctx_t *opt_codec_ctx,
+ const asn_TYPE_descriptor_t *td,
+ const asn_per_constraints_t *constraints, void **sptr, asn_per_data_t *pd) {
+
+ const asn_INTEGER_specifics_t *specs = (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_dec_rval_t rval;
+ long *native = (long *)*sptr;
+ INTEGER_t tmpint;
+ void *tmpintptr = &tmpint;
+
+ (void)opt_codec_ctx;
+ ASN_DEBUG("Decoding NativeInteger %s (APER)", td->name);
+
+ if(!native) {
+ native = (long *)(*sptr = CALLOC(1, sizeof(*native)));
+ if(!native) ASN__DECODE_FAILED;
+ }
+
+ memset(&tmpint, 0, sizeof tmpint);
+ rval = INTEGER_decode_aper(opt_codec_ctx, td, constraints,
+ &tmpintptr, pd);
+ if(rval.code == RC_OK) {
+ if((specs&&specs->field_unsigned)
+ ? asn_INTEGER2ulong(&tmpint, (unsigned long *)native)
+ : asn_INTEGER2long(&tmpint, native))
+ rval.code = RC_FAIL;
+ else
+ ASN_DEBUG("NativeInteger %s got value %ld",
+ td->name, *native);
+ }
+ ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+
+ return rval;
+}
+
+asn_enc_rval_t
+NativeInteger_encode_aper(const asn_TYPE_descriptor_t *td,
+ const asn_per_constraints_t *constraints,
+ const void *sptr, asn_per_outp_t *po) {
+
+ const asn_INTEGER_specifics_t *specs = (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_enc_rval_t er = {0,0,0};
+ long native;
+ INTEGER_t tmpint;
+
+ if(!sptr) ASN__ENCODE_FAILED;
+
+ native = *(const long *)sptr;
+
+ ASN_DEBUG("Encoding NativeInteger %s %ld (APER)", td->name, native);
+
+ memset(&tmpint, 0, sizeof(tmpint));
+ if((specs&&specs->field_unsigned)
+ ? asn_ulong2INTEGER(&tmpint, (unsigned long)native)
+ : asn_long2INTEGER(&tmpint, native))
+ ASN__ENCODE_FAILED;
+ er = INTEGER_encode_aper(td, constraints, &tmpint, po);
+ ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+ return er;
+}
+
+#endif /* ASN_DISABLE_PER_SUPPORT */
+
+/*
+ * INTEGER specific human-readable output.
+ */
+int
+NativeInteger_print(const asn_TYPE_descriptor_t *td, const void *sptr,
+ int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ const long *native = (const long *)sptr;
+ char scratch[32]; /* Enough for 64-bit int */
+ int ret;
+
+ (void)td; /* Unused argument */
+ (void)ilevel; /* Unused argument */
+
+ if(native) {
+ long value = *native;
+ ret = snprintf(scratch, sizeof(scratch),
+ (specs && specs->field_unsigned) ? "%lu" : "%ld", value);
+ assert(ret > 0 && (size_t)ret < sizeof(scratch));
+ if(cb(scratch, ret, app_key) < 0) return -1;
+ if(specs && (value >= 0 || !specs->field_unsigned)) {
+ const asn_INTEGER_enum_map_t *el =
+ INTEGER_map_value2enum(specs, value);
+ if(el) {
+ if(cb(" (", 2, app_key) < 0) return -1;
+ if(cb(el->enum_name, el->enum_len, app_key) < 0) return -1;
+ if(cb(")", 1, app_key) < 0) return -1;
+ }
+ }
+ return 0;
+ } else {
+ return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
+ }
+}
+
+void
+NativeInteger_free(const asn_TYPE_descriptor_t *td, void *ptr,
+ enum asn_struct_free_method method) {
+ if(!td || !ptr)
+ return;
+
+ ASN_DEBUG("Freeing %s as INTEGER (%d, %p, Native)",
+ td->name, method, ptr);
+
+ switch(method) {
+ case ASFM_FREE_EVERYTHING:
+ FREEMEM(ptr);
+ break;
+ case ASFM_FREE_UNDERLYING:
+ break;
+ case ASFM_FREE_UNDERLYING_AND_RESET:
+ memset(ptr, 0, sizeof(long));
+ break;
+ }
+}
+
+int
+NativeInteger_compare(const asn_TYPE_descriptor_t *td, const void *aptr, const void *bptr) {
+ (void)td;
+
+ if(aptr && bptr) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ if(specs && specs->field_unsigned) {
+ const unsigned long *a = aptr;
+ const unsigned long *b = bptr;
+ if(*a < *b) {
+ return -1;
+ } else if(*a > *b) {
+ return 1;
+ } else {
+ return 0;
+ }
+ } else {
+ const long *a = aptr;
+ const long *b = bptr;
+ if(*a < *b) {
+ return -1;
+ } else if(*a > *b) {
+ return 1;
+ } else {
+ return 0;
+ }
+ }
+ } else if(!aptr) {
+ return -1;
+ } else {
+ return 1;
+ }
+}
+
+asn_random_fill_result_t
+NativeInteger_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
+ const asn_encoding_constraints_t *constraints,
+ size_t max_length) {
+ const asn_INTEGER_specifics_t *specs =
+ (const asn_INTEGER_specifics_t *)td->specifics;
+ asn_random_fill_result_t result_ok = {ARFILL_OK, 1};
+ asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
+ asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
+ long *st = *sptr;
+ const asn_INTEGER_enum_map_t *emap;
+ size_t emap_len;
+ intmax_t value;
+ int find_inside_map;
+
+ if(max_length == 0) return result_skipped;
+
+ if(st == NULL) {
+ st = (long *)CALLOC(1, sizeof(*st));
+ if(st == NULL) {
+ return result_failed;
+ }
+ }
+
+ if(specs) {
+ emap = specs->value2enum;
+ emap_len = specs->map_count;
+ if(specs->strict_enumeration) {
+ find_inside_map = emap_len > 0;
+ } else {
+ find_inside_map = emap_len ? asn_random_between(0, 1) : 0;
+ }
+ } else {
+ emap = 0;
+ emap_len = 0;
+ find_inside_map = 0;
+ }
+
+ if(find_inside_map) {
+ assert(emap_len > 0);
+ value = emap[asn_random_between(0, emap_len - 1)].nat_value;
+ } else {
+ const asn_per_constraints_t *ct;
+
+ static const long variants[] = {
+ -65536, -65535, -65534, -32769, -32768, -32767, -16385, -16384,
+ -16383, -257, -256, -255, -254, -129, -128, -127,
+ -126, -1, 0, 1, 126, 127, 128, 129,
+ 254, 255, 256, 257, 16383, 16384, 16385, 32767,
+ 32768, 32769, 65534, 65535, 65536, 65537};
+ if(specs && specs->field_unsigned) {
+ assert(variants[18] == 0);
+ value = variants[asn_random_between(
+ 18, sizeof(variants) / sizeof(variants[0]) - 1)];
+ } else {
+ value = variants[asn_random_between(
+ 0, sizeof(variants) / sizeof(variants[0]) - 1)];
+ }
+
+ if(!constraints) constraints = &td->encoding_constraints;
+ ct = constraints ? constraints->per_constraints : 0;
+ if(ct && (ct->value.flags & APC_CONSTRAINED)) {
+ if(value < ct->value.lower_bound || value > ct->value.upper_bound) {
+ value = asn_random_between(ct->value.lower_bound,
+ ct->value.upper_bound);
+ }
+ }
+ }
+
+ *sptr = st;
+ *st = value;
+ return result_ok;
+}
Code Review / sim / e2-interface.git / blobdiff