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Core: added format specifiers to output binary data as hex.

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Now "s", "V", and "v" format specifiers may be prefixed with "x" (lowercase)
or "X" (uppercase) to output corresponding data in hexadecimal format.

In collaboration with Maxim Dounin.
This commit is contained in:
Vladimir Homutov 2020-10-28 10:56:11 +03:00
parent e29c49b31f
commit 5f90fe994b
4 changed files with 86 additions and 67 deletions
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87
src/core/ngx_string.c
View file

@ -11,6 +11,8 @@
static u_char *ngx_sprintf_num(u_char *buf, u_char *last, uint64_t ui64,
u_char zero, ngx_uint_t hexadecimal, ngx_uint_t width);
static u_char *ngx_sprintf_str(u_char *buf, u_char *last, u_char *src,
size_t len, ngx_uint_t hexadecimal);
static void ngx_encode_base64_internal(ngx_str_t *dst, ngx_str_t *src,
const u_char *basis, ngx_uint_t padding);
static ngx_int_t ngx_decode_base64_internal(ngx_str_t *dst, ngx_str_t *src,
@ -101,10 +103,10 @@ ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src)
* %M ngx_msec_t
* %r rlim_t
* %p void *
* %V ngx_str_t *
* %v ngx_variable_value_t *
* %s null-terminated string
* %*s length and string
* %[x|X]V ngx_str_t *
* %[x|X]v ngx_variable_value_t *
* %[x|X]s null-terminated string
* %*[x|X]s length and string
* %Z '\0'
* %N '\n'
* %c char
@ -165,7 +167,7 @@ ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args)
u_char *p, zero;
int d;
double f;
size_t len, slen;
size_t slen;
int64_t i64;
uint64_t ui64, frac;
ngx_msec_t ms;
@ -250,8 +252,7 @@ ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args)
case 'V':
v = va_arg(args, ngx_str_t *);
len = ngx_min(((size_t) (last - buf)), v->len);
buf = ngx_cpymem(buf, v->data, len);
buf = ngx_sprintf_str(buf, last, v->data, v->len, hex);
fmt++;
continue;
@ -259,8 +260,7 @@ ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args)
case 'v':
vv = va_arg(args, ngx_variable_value_t *);
len = ngx_min(((size_t) (last - buf)), vv->len);
buf = ngx_cpymem(buf, vv->data, len);
buf = ngx_sprintf_str(buf, last, vv->data, vv->len, hex);
fmt++;
continue;
@ -268,16 +268,7 @@ ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args)
case 's':
p = va_arg(args, u_char *);
if (slen == (size_t) -1) {
while (*p && buf < last) {
*buf++ = *p++;
}
} else {
len = ngx_min(((size_t) (last - buf)), slen);
buf = ngx_cpymem(buf, p, len);
}
buf = ngx_sprintf_str(buf, last, p, slen, hex);
fmt++;
continue;
@ -576,6 +567,64 @@ ngx_sprintf_num(u_char *buf, u_char *last, uint64_t ui64, u_char zero,
}
static u_char *
ngx_sprintf_str(u_char *buf, u_char *last, u_char *src, size_t len,
ngx_uint_t hexadecimal)
{
static u_char hex[] = "0123456789abcdef";
static u_char HEX[] = "0123456789ABCDEF";
if (hexadecimal == 0) {
if (len == (size_t) -1) {
while (*src && buf < last) {
*buf++ = *src++;
}
} else {
len = ngx_min((size_t) (last - buf), len);
buf = ngx_cpymem(buf, src, len);
}
} else if (hexadecimal == 1) {
if (len == (size_t) -1) {
while (*src && buf < last - 1) {
*buf++ = hex[*src >> 4];
*buf++ = hex[*src++ & 0xf];
}
} else {
while (len-- && buf < last - 1) {
*buf++ = hex[*src >> 4];
*buf++ = hex[*src++ & 0xf];
}
}
} else { /* hexadecimal == 2 */
if (len == (size_t) -1) {
while (*src && buf < last - 1) {
*buf++ = HEX[*src >> 4];
*buf++ = HEX[*src++ & 0xf];
}
} else {
while (len-- && buf < last - 1) {
*buf++ = HEX[*src >> 4];
*buf++ = HEX[*src++ & 0xf];
}
}
}
return buf;
}
/*
* We use ngx_strcasecmp()/ngx_strncasecmp() for 7-bit ASCII strings only,
* and implement our own ngx_strcasecmp()/ngx_strncasecmp()

16
src/event/ngx_event_openssl.c
View file

@ -4057,9 +4057,6 @@ ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
ngx_ssl_session_ticket_key_t *key;
const EVP_MD *digest;
const EVP_CIPHER *cipher;
#if (NGX_DEBUG)
u_char buf[32];
#endif
c = ngx_ssl_get_connection(ssl_conn);
ssl_ctx = c->ssl->session_ctx;
@ -4081,8 +4078,8 @@ ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
/* encrypt session ticket */
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
"ssl session ticket encrypt, key: \"%*s\" (%s session)",
ngx_hex_dump(buf, key[0].name, 16) - buf, buf,
"ssl session ticket encrypt, key: \"%*xs\" (%s session)",
(size_t) 16, key[0].name,
SSL_session_reused(ssl_conn) ? "reused" : "new");
if (key[0].size == 48) {
@ -4128,17 +4125,16 @@ ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
}
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
"ssl session ticket decrypt, key: \"%*s\" not found",
ngx_hex_dump(buf, name, 16) - buf, buf);
"ssl session ticket decrypt, key: \"%*xs\" not found",
(size_t) 16, name);
return 0;
found:
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
"ssl session ticket decrypt, key: \"%*s\"%s",
ngx_hex_dump(buf, key[i].name, 16) - buf, buf,
(i == 0) ? " (default)" : "");
"ssl session ticket decrypt, key: \"%*xs\"%s",
(size_t) 16, key[i].name, (i == 0) ? " (default)" : "");
if (key[i].size == 48) {
cipher = EVP_aes_128_cbc();

12
src/event/ngx_event_openssl_stapling.c
View file

@ -2662,16 +2662,8 @@ ngx_ssl_ocsp_create_key(ngx_ssl_ocsp_ctx_t *ctx)
p = ngx_cpymem(p, serial->data, serial->length);
ngx_memzero(p, 20 - serial->length);
#if (NGX_DEBUG)
{
u_char buf[120];
ngx_hex_dump(buf, ctx->key.data, ctx->key.len);
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ctx->log, 0,
"ssl ocsp key %*s", sizeof(buf), buf);
}
#endif
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ctx->log, 0,
"ssl ocsp key %xV", &ctx->key);
return NGX_OK;
}

38
src/http/modules/ngx_http_grpc_module.c
View file

@ -1141,20 +1141,11 @@ ngx_http_grpc_create_request(ngx_http_request_t *r)
f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG;
#if (NGX_DEBUG)
if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) {
u_char buf[512];
size_t n, m;
n = ngx_min(b->last - b->pos, 256);
m = ngx_hex_dump(buf, b->pos, n) - buf;
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"grpc header: %*s%s, len: %uz",
m, buf, b->last - b->pos > 256 ? "..." : "",
b->last - b->pos);
}
#endif
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"grpc header: %*xs%s, len: %uz",
(size_t) ngx_min(b->last - b->pos, 256), b->pos,
b->last - b->pos > 256 ? "..." : "",
b->last - b->pos);
if (r->request_body_no_buffering) {
@ -1604,20 +1595,11 @@ ngx_http_grpc_process_header(ngx_http_request_t *r)
u = r->upstream;
b = &u->buffer;
#if (NGX_DEBUG)
if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) {
u_char buf[512];
size_t n, m;
n = ngx_min(b->last - b->pos, 256);
m = ngx_hex_dump(buf, b->pos, n) - buf;
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"grpc response: %*s%s, len: %uz",
m, buf, b->last - b->pos > 256 ? "..." : "",
b->last - b->pos);
}
#endif
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"grpc response: %*xs%s, len: %uz",
(size_t) ngx_min(b->last - b->pos, 256),
b->pos, b->last - b->pos > 256 ? "..." : "",
b->last - b->pos);
ctx = ngx_http_grpc_get_ctx(r);