mirror of https://gerrit.osmocom.org/asn1c
148 lines
3.7 KiB
C
148 lines
3.7 KiB
C
#include <stdio.h>
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#include <assert.h>
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#include <ber_tlv_tag.c>
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struct tag_control_s {
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int taglen;
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uint8_t tagbuf[8];
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int correctly_decodable;
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int tclass; /* Tag class */
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ber_tlv_tag_t tvalue; /* Tag value */
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int constr; /* Is it constructed? */
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} control[] = {
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{ 1, { 0x2 << 6 }, 1, ASN_TAG_CLASS_CONTEXT, 0, 0 },
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{ 1, { 0x2 << 6 | 32 | 1 }, 1, ASN_TAG_CLASS_CONTEXT, 1, 1 },
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{ 1, { 0x3 << 6 | 30 }, 1, ASN_TAG_CLASS_PRIVATE, 30, 0 },
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{ 1, { 29 }, 1, ASN_TAG_CLASS_UNIVERSAL, 29, 0 },
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{ 1, { 0xbf, 31 }, 0, ASN_TAG_CLASS_CONTEXT, 31, 1 },
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{ 2, { 0xbf, 31 }, 1, ASN_TAG_CLASS_CONTEXT, 31, 1 },
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{ 2, { 0xbf, 83 }, 1, ASN_TAG_CLASS_CONTEXT, 83, 1 },
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{ 2, { 0xbf, 127 }, 1, ASN_TAG_CLASS_CONTEXT, 127, 1 },
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{ 2, { 0xbf, 129 }, 0, ASN_TAG_CLASS_CONTEXT, 127, 1 },
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{ 3, { 0xbf, 129, 0 }, 1, ASN_TAG_CLASS_CONTEXT, 128, 1 },
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{ 3, { 0xbf, 129, 1 }, 1, ASN_TAG_CLASS_CONTEXT, 129, 1 },
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{ 3, { 0xbf, 130, 0 }, 1, ASN_TAG_CLASS_CONTEXT, 256, 1 },
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{ 3, { 0xbf, 130, 1 }, 1, ASN_TAG_CLASS_CONTEXT, 257, 1 },
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{ 3, { 0xbf, 130, 0x81 }, 0, 0, 0, 0 },
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{ 4, { 0xbf, 130, 0x81, 2 }, 1, ASN_TAG_CLASS_CONTEXT, 32898, 1 },
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{ 4, { 0xbf, 130, 0x81, 0x82 }, 0, ASN_TAG_CLASS_CONTEXT, 32898, 1 },
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{ 5, { 0x1f, 130, 0x81, 0x82, 1 }, 1, 0, 4210945, 0 },
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{ 5, { 0x1f, 130, 0x81, 0x82, 2 }, 1, 0, 4210946, 0 },
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{ 5, { 0x1f, 0xff, 0x81, 0x82, 2 }, 1, 0, 266354946, 0 },
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{ 6, { 0x1f, 0xff, 0xff, 0x82, 0x80, 1 }, -1, 0, 266354946, 0 },
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{ 7, { 0x1f, 0x8E, 0x87, 0xAA, 0x95, 0x99, 3}, -1, 0, 4000000000UL, 0 },
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};
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static void check_decode(struct tag_control_s *ctrl);
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static void check_encode(struct tag_control_s *ctrl);
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int
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main() {
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size_t i;
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for(i = 0; i < sizeof(control) / sizeof(control[0]); i++) {
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check_decode(&control[i]);
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check_encode(&control[i]);
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}
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return 0;
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}
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static void
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check_decode(struct tag_control_s *ctrl) {
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ber_tlv_tag_t tag = 123;
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ber_tlv_tag_t tag1 = 124;
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ber_tlv_tag_t tag2 = 125;
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ssize_t size;
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if(ctrl->correctly_decodable < 1) {
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size = ber_fetch_tag(ctrl->tagbuf, ctrl->taglen, &tag1);
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assert(size == ctrl->correctly_decodable);
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return;
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}
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printf("Expecting ");
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tag = (ctrl->tvalue << 2) | ctrl->tclass;
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ber_tlv_tag_fwrite(tag, stdout);
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printf(", got ");
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size = ber_fetch_tag(ctrl->tagbuf, 0, &tag1);
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assert(size == 0);
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size = ber_fetch_tag(ctrl->tagbuf, ctrl->taglen, &tag1);
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assert(size == ctrl->taglen);
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size = ber_fetch_tag(ctrl->tagbuf, ctrl->taglen + 10, &tag2);
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assert(size == ctrl->taglen);
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ber_tlv_tag_fwrite(tag1, stdout);
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printf("\n");
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assert(tag1 == tag2);
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assert(tag == tag1);
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assert(ctrl->constr == BER_TLV_CONSTRUCTED(ctrl->tagbuf));
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}
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static void
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check_encode(struct tag_control_s *ctrl) {
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uint8_t buf[16];
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ber_tlv_tag_t tag;
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int Filler = 0xDA;
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ssize_t size;
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ssize_t i;
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tag = ctrl->tvalue << 2 | ctrl->tclass;
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/*
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* Testing buffer overruns.
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*/
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for(i = 0; i < (int)sizeof(buf); i++) {
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int j;
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memset(buf, Filler, sizeof(buf));
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size = ber_tlv_tag_serialize(tag, buf, i);
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assert(size < (int)sizeof(buf));
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if(size <= i) {
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for(j = 0; j < size; j++) assert(buf[j] != Filler);
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} else {
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j = i;
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}
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for(; j < (int)sizeof(buf); j++) assert(buf[j] == Filler);
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}
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memset(buf, Filler, sizeof(buf));
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size = ber_tlv_tag_serialize(tag, buf, sizeof(buf));
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assert(size < (int)sizeof(buf));
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for(i = 0; i < size; i++) assert(buf[i] != Filler);
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for(; i < (int)sizeof(buf); i++) assert(buf[i] == Filler);
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if(ctrl->correctly_decodable == 1) {
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assert(size == ctrl->taglen);
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}
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if(ctrl->constr) *buf |= 0x20;
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ber_tlv_tag_fwrite(tag, stdout);
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printf(":");
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for(i = 0; i < size; i++) {
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printf(" %02x", buf[i]);
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if(ctrl->correctly_decodable == 1) {
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assert(ctrl->tagbuf[i] == buf[i]);
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}
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}
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printf("\n");
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}
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