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-rw-r--r--lib/util/samba_util.h5
-rw-r--r--lib/util/util.c25
-rwxr-xr-xsource3/selftest/tests.py1
-rw-r--r--source3/torture/torture.c21
4 files changed, 43 insertions, 9 deletions
diff --git a/lib/util/samba_util.h b/lib/util/samba_util.h
index 9df3ddfcd0..5ce2e5e535 100644
--- a/lib/util/samba_util.h
+++ b/lib/util/samba_util.h
@@ -262,6 +262,11 @@ _PUBLIC_ size_t strhex_to_str(char *p, size_t p_len, const char *strhex, size_t
_PUBLIC_ _PURE_ DATA_BLOB strhex_to_data_blob(TALLOC_CTX *mem_ctx, const char *strhex) ;
/**
+ * Print a buf in hex. Assumes dst is at least (srclen*2)+1 large.
+ */
+_PUBLIC_ void hex_encode_buf(char *dst, const uint8_t *src, size_t srclen);
+
+/**
* Routine to print a buffer as HEX digits, into an allocated string.
*/
_PUBLIC_ void hex_encode(const unsigned char *buff_in, size_t len, char **out_hex_buffer);
diff --git a/lib/util/util.c b/lib/util/util.c
index c4fbd0b39f..867da0a340 100644
--- a/lib/util/util.c
+++ b/lib/util/util.c
@@ -758,20 +758,31 @@ _PUBLIC_ _PURE_ DATA_BLOB strhex_to_data_blob(TALLOC_CTX *mem_ctx, const char *s
return ret_blob;
}
+/**
+ * Print a buf in hex. Assumes dst is at least (srclen*2)+1 large.
+ */
+_PUBLIC_ void hex_encode_buf(char *dst, const uint8_t *src, size_t srclen)
+{
+ size_t i;
+ for (i=0; i<srclen; i++) {
+ snprintf(dst + i*2, 3, "%02X", src[i]);
+ }
+ /*
+ * Ensure 0-termination for 0-length buffers
+ */
+ dst[srclen*2] = '\0';
+}
/**
* Routine to print a buffer as HEX digits, into an allocated string.
*/
_PUBLIC_ void hex_encode(const unsigned char *buff_in, size_t len, char **out_hex_buffer)
{
- int i;
char *hex_buffer;
*out_hex_buffer = malloc_array_p(char, (len*2)+1);
hex_buffer = *out_hex_buffer;
-
- for (i = 0; i < len; i++)
- slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
+ hex_encode_buf(hex_buffer, buff_in, len);
}
/**
@@ -779,17 +790,13 @@ _PUBLIC_ void hex_encode(const unsigned char *buff_in, size_t len, char **out_he
*/
_PUBLIC_ char *hex_encode_talloc(TALLOC_CTX *mem_ctx, const unsigned char *buff_in, size_t len)
{
- int i;
char *hex_buffer;
hex_buffer = talloc_array(mem_ctx, char, (len*2)+1);
if (!hex_buffer) {
return NULL;
}
-
- for (i = 0; i < len; i++)
- slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
-
+ hex_encode_buf(hex_buffer, buff_in, len);
talloc_set_name_const(hex_buffer, hex_buffer);
return hex_buffer;
}
diff --git a/source3/selftest/tests.py b/source3/selftest/tests.py
index 6a3ccb9877..ce6d964703 100755
--- a/source3/selftest/tests.py
+++ b/source3/selftest/tests.py
@@ -107,6 +107,7 @@ local_tests=[
"LOCAL-TEVENT-SELECT",
"LOCAL-CONVERT-STRING",
"LOCAL-CONV-AUTH-INFO",
+ "LOCAL-hex_encode_buf",
"LOCAL-sprintf_append"]
for t in local_tests:
diff --git a/source3/torture/torture.c b/source3/torture/torture.c
index e4ce91338f..b14f9ed873 100644
--- a/source3/torture/torture.c
+++ b/source3/torture/torture.c
@@ -8693,6 +8693,26 @@ fail:
return result;
}
+static bool run_local_hex_encode_buf(int dummy)
+{
+ char buf[17];
+ uint8_t src[8];
+ int i;
+
+ for (i=0; i<sizeof(src); i++) {
+ src[i] = i;
+ }
+ hex_encode_buf(buf, src, sizeof(src));
+ if (strcmp(buf, "0001020304050607") != 0) {
+ return false;
+ }
+ hex_encode_buf(buf, NULL, 0);
+ if (buf[0] != '\0') {
+ return false;
+ }
+ return true;
+}
+
static double create_procs(bool (*fn)(int), bool *result)
{
int i, status;
@@ -8895,6 +8915,7 @@ static struct {
{ "LOCAL-CONVERT-STRING", run_local_convert_string, 0},
{ "LOCAL-CONV-AUTH-INFO", run_local_conv_auth_info, 0},
{ "LOCAL-sprintf_append", run_local_sprintf_append, 0},
+ { "LOCAL-hex_encode_buf", run_local_hex_encode_buf, 0},
{NULL, NULL, 0}};