Add wpa_snprintf_hex_sep()

[mech_eap.git] / src / utils / common.c

diff --git a/src/utils/common.c b/src/utils/common.c
index 5fd795f..0bdc38d 100644 (file)
--- a/src/utils/common.c
+++ b/src/utils/common.c
@@ -277,6 +277,31 @@ int wpa_scnprintf(char *buf, size_t size, const char *fmt, ...)
        return ret;
 }
 
+
+int wpa_snprintf_hex_sep(char *buf, size_t buf_size, const u8 *data, size_t len,
+                        char sep)
+{
+       size_t i;
+       char *pos = buf, *end = buf + buf_size;
+       int ret;
+
+       if (buf_size == 0)
+               return 0;
+
+       for (i = 0; i < len; i++) {
+               ret = os_snprintf(pos, end - pos, "%02x%c",
+                                 data[i], sep);
+               if (os_snprintf_error(end - pos, ret)) {
+                       end[-1] = '\0';
+                       return pos - buf;
+               }
+               pos += ret;
+       }
+       pos[-1] = '\0';
+       return pos - buf;
+}
+
+
 static inline int _wpa_snprintf_hex(char *buf, size_t buf_size, const u8 *data,
                                    size_t len, int uppercase)
 {