MINOR: ncbmbuf: add tests as standalone mode

Write some tests for ncbmbuf buf. These tests should be run each time
ncbmbuf implementation is adjusted. Use the following command :

$ gcc -g -DSTANDALONE -I./include -o ncbmbuf src/ncbmbuf.c && ./ncbmbuf

As the previous patch, this commit must be backported prior to the fix
to come on QUIC CRYPTO frames parsing.
This commit is contained in:
Amaury Denoyelle 2025-10-16 16:41:42 +02:00
parent 8b8ab2824e
commit 25e378fa65

View File

@ -2,6 +2,10 @@
#include <string.h>
#ifdef STANDALONE
#include <stdio.h>
#endif /* STANDALONE */
#ifdef DEBUG_STRICT
# include <haproxy/bug.h>
#else
@ -333,3 +337,272 @@ enum ncb_ret ncbmb_advance(struct ncbmbuf *buf, ncb_sz_t adv)
return NCB_RET_OK;
}
#ifdef STANDALONE
static void ncbmbuf_print_buf(struct ncbmbuf *b, int line)
{
ncb_sz_t data;
int i;
fprintf(stderr, "[%03d] ", line);
for (i = 0; i < b->size; ++i) {
if (i && !(i % 8)) fprintf(stderr, " ");
else if (i && !(i % 4)) fprintf(stderr, ".");
fprintf(stderr, "%02x", (unsigned char)b->area[i]);
}
fprintf(stderr, " [");
for (i = 0; i < b->size_bm; ++i)
fprintf(stderr, "%02x", (unsigned char)b->bitmap[i]);
fprintf(stderr, "]\n");
}
#define NCBMB_DATA_EQ(buf, off, data) \
BUG_ON(ncbmb_data((buf), (off)) != (data))
void test_ncbmb(void)
{
char *area = calloc(16384, 1);
char *data = calloc(16384, 1);
struct ncbmbuf buf;
memset(data, 0x11, 16384);
/* 7 bytes data // 1 byte bitmap (0xfe) */
buf = ncbmb_make(area, 8, 0);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 0);
ncbmb_add(&buf, 1, data, 3, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 1, 3);
ncbmb_advance(&buf, 2);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 2);
ncbmb_advance(&buf, 7);
ncbmb_add(&buf, 0, data, 7, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 7);
/* 7 bytes data // 1 byte bitmap (0xfe) */
buf = ncbmb_make(area, 8, 0);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 0);
ncbmb_add(&buf, 0, data, 2, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 2);
ncbmb_add(&buf, 4, data, 2, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__);
NCBMB_DATA_EQ(&buf, 0, 2); NCBMB_DATA_EQ(&buf, 4, 2);
ncbmb_add(&buf, 2, data, 2, NCB_ADD_OVERWRT);
ncbmb_add(&buf, 6, data, 1, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 7);
fprintf(stderr, "\n");
/* 8 bytes data // 1 byte bitmap (no unused) */
buf = ncbmb_make(area, 9, 4); ncbmbuf_print_buf(&buf, __LINE__);
ncbmb_add(&buf, 1, data, 6, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 1, 6);
ncbmb_add(&buf, 7, data, 1, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 1, 7);
fprintf(stderr, "\n");
/* 8 bytes data // 2 bytes bitmap (0x00) */
buf = ncbmb_make(area, 10, 0);
ncbmbuf_print_buf(&buf, __LINE__);
ncbmb_add(&buf, 0, data, 5, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 5);
ncbmb_add(&buf, 7, data, 1, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 7, 1);
ncbmb_add(&buf, 5, data, 3, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 8);
fprintf(stderr, "\n");
/* 26 bytes data // 4 bytes bitmap (0xc0) */
buf = ncbmb_make(area, 30, 15); ncbmbuf_print_buf(&buf, __LINE__);
ncbmb_add(&buf, 0, data, 12, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 0, 12);
ncbmb_add(&buf, 19, data, 1, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 19, 1);
ncbmb_add(&buf, 20, data, 6, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__); NCBMB_DATA_EQ(&buf, 19, 7);
ncbmb_add(&buf, 12, data, 10, NCB_ADD_OVERWRT);
ncbmbuf_print_buf(&buf, __LINE__);
NCBMB_DATA_EQ(&buf, 0, 26); NCBMB_DATA_EQ(&buf, 1, 25);
ncbmb_advance(&buf, 15);
NCBMB_DATA_EQ(&buf, 0, 11); ncbmbuf_print_buf(&buf, __LINE__);
fprintf(stderr, "\n");
free(area); free(data);
}
#define ITBMAP_CHECK(it, m, b) \
BUG_ON((it).mask != (m) || (it).bits != (b))
void test_itbmap(void)
{
struct itbmap it;
char *area = calloc(16384, 1);
struct ncbmbuf buf;
/* 7 bytes data // 1 byte bitmap (0xfe) */
buf = ncbmb_make(area, 8, 0); ncbmbuf_print_buf(&buf, __LINE__);
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0xfe, 7);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
it = itbmap_get(&buf, 1); ITBMAP_CHECK(it, 0x7e, 6);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
/* 8 bytes data // 1 byte bitmap (no unused) */
buf = ncbmb_make(area, 9, 0); ncbmbuf_print_buf(&buf, __LINE__);
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
it = itbmap_get(&buf, 6); ITBMAP_CHECK(it, 0x03, 2);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
it = itbmap_get(&buf, 7); ITBMAP_CHECK(it, 0x01, 1);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
/* 10 bytes data // 2 bytes bitmap (0xc0) */
buf = ncbmb_make(area, 12, 0); ncbmbuf_print_buf(&buf, __LINE__);
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
buf.head = 3;
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0x1f, 5);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xe0, 3);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
buf.head = 4;
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0x0f, 4);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xf0, 4);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
buf.head = 7;
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0x01, 1);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xfe, 7);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
buf.head = 8;
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
/* 8 bytes data // 2 bytes bitmap (0x00) */
buf = ncbmb_make(area, 10, 0); ncbmbuf_print_buf(&buf, __LINE__);
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
it = itbmap_get(&buf, 4); ITBMAP_CHECK(it, 0x0f, 4);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
it = itbmap_get(&buf, 6); ITBMAP_CHECK(it, 0x03, 2);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
buf.head = 7;
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0x01, 1);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xfe, 7);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
/* 26 bytes data // 4 bytes bitmap (0xc0) */
buf = ncbmb_make(area, 30, 0); ncbmbuf_print_buf(&buf, __LINE__);
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
it = itbmap_get(&buf, 15); ITBMAP_CHECK(it, 0x01, 1);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
buf.head = 15;
it = itbmap_get(&buf, 0); ITBMAP_CHECK(it, 0x01, 1);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xc0, 2);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xff, 8);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xfe, 7);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
it = itbmap_get(&buf, 15); ITBMAP_CHECK(it, 0x0f, 4);
it = itbmap_next(&buf, &it); ITBMAP_CHECK(it, 0xfe, 7);
it = itbmap_next(&buf, &it); BUG_ON(it.b);
free(area);
}
/* Real example of QUIC CRYPTO frames received from ngtcp2 client. */
void test_ngtcp2_crypto(void)
{
char *area = calloc(16384, 1);
char *data = calloc(16384, 1);
struct ncbmbuf buf;
memset(data, 0x11, 16384);
buf = ncbmb_make(area, 16384, 0);
ncbmb_add(&buf, 371, data, 14, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 371, 14);
ncbmb_add(&buf, 430, data, 59, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 430, 59);
ncbmb_add(&buf, 607, data, 472, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 607, 472);
ncbmb_add(&buf, 489, data, 118, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 489, 590);
ncbmb_add(&buf, 66, data, 67, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 66, 67);
ncbmb_add(&buf, 385, data, 15, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 385, 15);
ncbmb_add(&buf, 135, data, 118, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 135, 118);
ncbmb_add(&buf, 0, data, 66, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 0, 133);
ncbmb_add(&buf, 400, data, 15, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 400, 15);
ncbmb_add(&buf, 253, data, 118, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 253, 162);
ncbmb_add(&buf, 415, data, 15, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 400, 679);
ncbmb_add(&buf, 133, data, 1, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 0, 134);
ncbmb_add(&buf, 134, data, 1, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 0, 1079);
ncbmb_add(&buf, 1265, data, 187, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1265, 187);
ncbmb_add(&buf, 1218, data, 47, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1218, 234);
ncbmb_add(&buf, 1192, data, 3, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1192, 3);
ncbmb_add(&buf, 1177, data, 3, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1177, 3);
ncbmb_add(&buf, 1125, data, 47, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1125, 47);
ncbmb_add(&buf, 1172, data, 5, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1125, 55);
ncbmb_add(&buf, 1079, data, 46, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 0, 1180);
ncbmb_add(&buf, 1195, data, 23, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1192, 260);
ncbmb_add(&buf, 1183, data, 6, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 1183, 6);
ncbmb_add(&buf, 1180, data, 3, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 0, 1189);
ncbmb_add(&buf, 1189, data, 3, NCB_ADD_OVERWRT);
NCBMB_DATA_EQ(&buf, 0, 1452);
free(area); free(data);
}
int main(int argc, char **argv)
{
test_ncbmb();
test_itbmap();
test_ngtcp2_crypto();
return 0;
}
#endif /* STANDALONE */