添加生成JA3指纹的实现

2 files changed, 666 insertions, 1 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4ea89c4..c9c24b1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,7 +33,8 @@ include_directories(./src/inc/)
 include_directories(./src/)
 
 file(GLOB SRC
-    "src/*.c"    
+    "src/*.c"
+    "src/*.cpp"
 )
 
 set(DNS_DEPEND_DYN_LIB MESA_handle_logger MESA_field_stat2 MESA_prof_load)
diff --git a/src/SSl_ja3_fingerprint.cpp b/src/SSl_ja3_fingerprint.cpp
new file mode 100644
index 0000000..08d7a18
--- /dev/null
+++ b/src/SSl_ja3_fingerprint.cpp
@@ -0,0 +1,664 @@
+#include <ctype.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <openssl/md5.h>
+
+#include <MESA/stream.h>
+#include "ssl.h"
+
+int g_ssl_ja3_fingerprint_label_id=-1;
+
+#ifndef MIN
+#define MIN(a, b) ((a) > (b) ? (b) : (a))
+#endif
+
+#define BSB_INIT(b, buffer, size)                     \
+    do                                                \
+    {                                                 \
+        (b).buf = (unsigned char *)buffer;            \
+        (b).ptr = (unsigned char *)buffer;            \
+        int s = (int)size;                            \
+        if ((buffer == NULL) || (s < 0))              \
+            (b).end = 0;                              \
+        else                                          \
+            (b).end = (unsigned char *)buffer + size; \
+    } while (0)
+
+#define BSB_SET_ERROR(b) ((b).end = NULL)
+#define BSB_IS_ERROR(b) ((b).end == NULL)
+#define BSB_NOT_ERROR(b) ((b).end != NULL)
+#define BSB_LENGTH(b) ((b).ptr - (b).buf)
+#define BSB_POSITION BSB_LENGTH
+#define BSB_SIZE(b) ((b).end - (b).buf)
+#define BSB_REMAINING(b) ((b).end ? (b).end - (b).ptr : 0)
+#define BSB_WORK_PTR(b) ((b).ptr)
+
+#define BSB_EXPORT_u08(b, x)                   \
+    do                                         \
+    {                                          \
+        if ((b).ptr && (b).ptr + 1 <= (b).end) \
+        {                                      \
+            *(((b).ptr)++) = (unsigned char)x; \
+        }                                      \
+        else                                   \
+            BSB_SET_ERROR(b);                  \
+    } while (0)
+
+#define BSB_EXPORT_u16(b, x)                    \
+    do                                          \
+    {                                           \
+        if ((b).ptr && (b).ptr + 2 <= (b).end)  \
+        {                                       \
+            uint16_t t = (uint16_t)x;           \
+            *(((b).ptr)++) = (t & 0xff00) >> 8; \
+            *(((b).ptr)++) = (t & 0x00ff);      \
+        }                                       \
+        else                                    \
+            BSB_SET_ERROR(b);                   \
+    } while (0)
+
+#define BSB_EXPORT_u32(b, x)                         \
+    do                                               \
+    {                                                \
+        if ((b).ptr && (b).ptr + 4 <= (b).end)       \
+        {                                            \
+            uint32_t t = x;                          \
+            *(((b).ptr)++) = (t & 0xff000000) >> 24; \
+            *(((b).ptr)++) = (t & 0x00ff0000) >> 16; \
+            *(((b).ptr)++) = (t & 0x0000ff00) >> 8;  \
+            *(((b).ptr)++) = (t & 0x000000ff);       \
+        }                                            \
+        else                                         \
+            BSB_SET_ERROR(b);                        \
+    } while (0)
+
+#define BSB_EXPORT_ptr(b, x, size)       \
+    do                                   \
+    {                                    \
+        if ((x || size == 0) &&          \
+            (b).ptr + size <= (b).end && \
+            (b).ptr + size >= (b).buf)   \
+        {                                \
+            memcpy((b).ptr, x, size);    \
+            (b).ptr += size;             \
+        }                                \
+        else                             \
+            BSB_SET_ERROR(b);            \
+    } while (0)
+
+#define BSB_EXPORT_ptr_some(b, x, size)           \
+    do                                            \
+    {                                             \
+        if ((b).ptr + size <= (b).end)            \
+        {                                         \
+            memcpy((b).ptr, x, size);             \
+            (b).ptr += size;                      \
+        }                                         \
+        else if (BSB_NOT_ERROR(b))                \
+        {                                         \
+            memcpy((b).ptr, x, BSB_REMAINING(b)); \
+            (b).ptr += BSB_REMAINING(b);          \
+        }                                         \
+    } while (0)
+
+#define BSB_EXPORT_cstr(b, x)          \
+    do                                 \
+    {                                  \
+        const int size = sizeof x - 1; \
+        if ((b).ptr + size <= (b).end) \
+        {                              \
+            memcpy((b).ptr, x, size);  \
+            (b).ptr += size;           \
+        }                              \
+        else                           \
+            BSB_SET_ERROR(b);          \
+    } while (0)
+
+#define BSB_EXPORT_skip(b, size)         \
+    do                                   \
+    {                                    \
+        if ((b).ptr + size <= (b).end && \
+            (b).ptr + size >= (b).buf)   \
+        {                                \
+            (b).ptr += size;             \
+            if ((b).ptr < (b).buf)       \
+                (b).end = 0;             \
+        }                                \
+        else                             \
+            BSB_SET_ERROR(b);            \
+    } while (0)
+
+#define BSB_EXPORT_rewind(b, size)       \
+    do                                   \
+    {                                    \
+        if ((b).ptr - size <= (b).end && \
+            (b).ptr - size >= (b).buf)   \
+        {                                \
+            (b).ptr -= size;             \
+            if ((b).ptr < (b).buf)       \
+                (b).end = 0;             \
+        }                                \
+        else                             \
+        {                                \
+            BSB_SET_ERROR(b);            \
+        }                                \
+    } while (0)
+
+#if defined(C9X)
+
+#define BSB_EXPORT_sprintf(b, ...)              \
+    do                                          \
+    {                                           \
+        if ((b).end != 0)                       \
+        {                                       \
+            int l = snprintf((char *)(b).ptr,   \
+                             (b).end - (b).ptr, \
+                             __VA_ARGS__);      \
+            if (l <= (b).end - (b).ptr)         \
+            {                                   \
+                (b).ptr += l;                   \
+            }                                   \
+            else                                \
+            {                                   \
+                BSB_SET_ERROR(b);               \
+            }                                   \
+        }                                       \
+    } while (0)
+
+#else
+
+#define BSB_EXPORT_sprintf(b, args...)          \
+    do                                          \
+    {                                           \
+        if ((b).end != 0)                       \
+        {                                       \
+            int l = snprintf((char *)(b).ptr,   \
+                             (b).end - (b).ptr, \
+                             ##args);           \
+            if (l <= (b).end - (b).ptr)         \
+            {                                   \
+                (b).ptr += l;                   \
+            }                                   \
+            else                                \
+            {                                   \
+                BSB_SET_ERROR(b);               \
+            }                                   \
+        }                                       \
+    } while (0)
+#endif
+
+#define BSB_IMPORT_u08(b, x)                   \
+    do                                         \
+    {                                          \
+        if ((b).ptr && (b).ptr + 1 <= (b).end) \
+        {                                      \
+            x = *(((b).ptr)++);                \
+        }                                      \
+        else                                   \
+            BSB_SET_ERROR(b);                  \
+    } while (0)
+
+#define BSB_IMPORT_u16(b, x)                    \
+    do                                          \
+    {                                           \
+        if ((b).ptr && (b).ptr + 2 <= (b).end)  \
+        {                                       \
+            x = ((uint16_t)((b).ptr)[0]) << 8 | \
+                ((uint16_t)((b).ptr)[1]);       \
+            (b).ptr += 2;                       \
+        }                                       \
+        else                                    \
+            BSB_SET_ERROR(b);                   \
+    } while (0)
+
+#define BSB_IMPORT_u24(b, x)                     \
+    do                                           \
+    {                                            \
+        if ((b).ptr && (b).ptr + 3 <= (b).end)   \
+        {                                        \
+            x = ((uint32_t)((b).ptr)[0]) << 16 | \
+                ((uint32_t)((b).ptr)[1]) << 8 |  \
+                ((uint32_t)((b).ptr)[2]);        \
+            (b).ptr += 3;                        \
+        }                                        \
+        else                                     \
+            BSB_SET_ERROR(b);                    \
+    } while (0)
+
+#define BSB_IMPORT_u32(b, x)                     \
+    do                                           \
+    {                                            \
+        if ((b).ptr && (b).ptr + 4 <= (b).end)   \
+        {                                        \
+            x = ((uint32_t)((b).ptr)[0]) << 24 | \
+                ((uint32_t)((b).ptr)[1]) << 16 | \
+                ((uint32_t)((b).ptr)[2]) << 8 |  \
+                ((uint32_t)((b).ptr)[3]);        \
+            (b).ptr += 4;                        \
+        }                                        \
+        else                                     \
+            BSB_SET_ERROR(b);                    \
+    } while (0)
+
+#define BSB_LEXPORT_u08(b, x) BSB_EXPORT_u08(b, x)
+
+#define BSB_LEXPORT_u16(b, x)                   \
+    do                                          \
+    {                                           \
+        if ((b).ptr + 2 <= (b).end)             \
+        {                                       \
+            uint16_t t = (uint16_t)x;           \
+            *(((b).ptr)++) = (t & 0x00ff);      \
+            *(((b).ptr)++) = (t & 0xff00) >> 8; \
+        }                                       \
+        else                                    \
+            BSB_SET_ERROR(b);                   \
+    } while (0)
+
+#define BSB_LEXPORT_u32(b, x)                        \
+    do                                               \
+    {                                                \
+        if ((b).ptr + 4 <= (b).end)                  \
+        {                                            \
+            uint32_t t = x;                          \
+            *(((b).ptr)++) = (t & 0x000000ff);       \
+            *(((b).ptr)++) = (t & 0x0000ff00) >> 8;  \
+            *(((b).ptr)++) = (t & 0x00ff0000) >> 16; \
+            *(((b).ptr)++) = (t & 0xff000000) >> 24; \
+        }                                            \
+        else                                         \
+            BSB_SET_ERROR(b);                        \
+    } while (0)
+
+#define BSB_LIMPORT_u08(b, x) BSB_IMPORT_u08(b, x)
+
+#define BSB_LIMPORT_u16(b, x)                   \
+    do                                          \
+    {                                           \
+        if ((b).ptr + 2 <= (b).end)             \
+        {                                       \
+            x = ((uint16_t)((b).ptr)[1]) << 8 | \
+                ((uint16_t)((b).ptr)[0]);       \
+            (b).ptr += 2;                       \
+        }                                       \
+        else                                    \
+            BSB_SET_ERROR(b);                   \
+    } while (0)
+
+#define BSB_LIMPORT_u24(b, x)                    \
+    do                                           \
+    {                                            \
+        if ((b).ptr + 3 <= (b).end)              \
+        {                                        \
+            x = ((uint32_t)((b).ptr)[2]) << 16 | \
+                ((uint32_t)((b).ptr)[1]) << 8 |  \
+                ((uint32_t)((b).ptr)[0]);        \
+            (b).ptr += 3;                        \
+        }                                        \
+        else                                     \
+            BSB_SET_ERROR(b);                    \
+    } while (0)
+
+#define BSB_LIMPORT_u32(b, x)                    \
+    do                                           \
+    {                                            \
+        if ((b).ptr + 4 <= (b).end)              \
+        {                                        \
+            x = ((uint32_t)((b).ptr)[3]) << 24 | \
+                ((uint32_t)((b).ptr)[2]) << 16 | \
+                ((uint32_t)((b).ptr)[1]) << 8 |  \
+                ((uint32_t)((b).ptr)[0]);        \
+            (b).ptr += 4;                        \
+        }                                        \
+        else                                     \
+            BSB_SET_ERROR(b);                    \
+    } while (0)
+
+#define BSB_IMPORT_ptr(b, x, size)       \
+    do                                   \
+    {                                    \
+        if ((b).ptr + size <= (b).end && \
+            (b).ptr + size >= (b).buf)   \
+        {                                \
+            (x) = (b).ptr;               \
+            (b).ptr += size;             \
+        }                                \
+        else                             \
+        {                                \
+            BSB_SET_ERROR(b);            \
+            x = 0;                       \
+        }                                \
+    } while (0)
+
+#define BSB_LIMPORT_ptr BSB_IMPORT_ptr
+#define BSB_IMPORT_skip BSB_EXPORT_skip
+#define BSB_LIMPORT_skip BSB_EXPORT_skip
+#define BSB_IMPORT_rewind BSB_EXPORT_rewind
+#define BSB_LIMPORT_rewind BSB_EXPORT_rewind
+
+#define BSB_memchr(b, ch, pos)                                 \
+    do                                                         \
+    {                                                          \
+        if (BSB_IS_ERROR(b))                                   \
+        {                                                      \
+            pos = 0;                                           \
+            break;                                             \
+        }                                                      \
+        char *s = memchr((char *)b.ptr, ch, BSB_REMAINING(b)); \
+        if (s)                                                 \
+            pos = (char *)s - (char *)b.ptr;                   \
+        else                                                   \
+            pos = 0;                                           \
+    } while (0)
+
+#define BSB_memcmp(str, b, len) ((b).ptr + len <= (b).end ? memcmp(str, b.ptr, len) : -1)
+
+#define BSB_PEEK(b) ((b).ptr + 1 <= (b).end ? *b.ptr : -1)
+
+#define BSB_IMPORT_zbyte(b, x, size)   \
+    do                                 \
+    {                                  \
+        if ((b).ptr + size <= (b).end) \
+        {                              \
+            memcpy(x, b, size);        \
+            (x)[size] = 0;             \
+            (b).ptr += size;           \
+        }                              \
+        else                           \
+        {                              \
+            BSB_SET_ERROR(b);          \
+            (x)[0] = 0;                \
+        }                              \
+    } while (0)
+
+/* Private data structure */
+typedef struct bsb
+{
+    unsigned char *buf;
+    unsigned char *ptr;
+    unsigned char *end;
+} BSB;
+
+
+static int ja3_md5sum(const char *str, int len, char *buf, int size)
+{
+    int n;
+    int ret = 0;
+    MD5_CTX ctx;
+    unsigned char tmp[MD5_DIGEST_LENGTH];
+
+    MD5_Init(&ctx);
+    MD5_Update(&ctx, str, len);
+    MD5_Final(tmp, &ctx);
+
+    for (n = 0; n < MD5_DIGEST_LENGTH; n++)
+    {
+        ret += snprintf(buf + ret, size - ret, "%.2x", tmp[n]);
+    }
+
+    return ret;
+}
+
+
+// https://tools.ietf.org/html/draft-davidben-tls-grease-00
+static int tls_is_grease_value(uint32_t val)
+{
+    if ((val & 0x0f) != 0x0a)
+        return 0;
+
+    if ((val & 0xff) != ((val >> 8) & 0xff))
+        return 0;
+
+    return 1;
+}
+
+static int ssl_generate_ja3_fingerprint(const unsigned char *data, int len, char *ja3_fp, int ja3_fp_len, char *sni_buff, int sni_buff_len)
+{
+    BSB sslbsb;
+    //char ja3[30000];
+    BSB ja3bsb;
+    char ecfja3[1000];
+    BSB ecfja3bsb;
+    char eja3[10000];
+    BSB eja3bsb;
+    char ecja3[10000];
+    BSB ecja3bsb;
+
+    BSB_INIT(sslbsb, data, len);
+    BSB_INIT(ja3bsb, ja3_fp, sizeof(ja3_fp));
+    BSB_INIT(ecja3bsb, ecja3, sizeof(ecja3));
+    BSB_INIT(ecfja3bsb, ecfja3, sizeof(ecfja3));
+    BSB_INIT(eja3bsb, eja3, sizeof(eja3));
+
+    if (BSB_REMAINING(sslbsb) > 5)
+    {
+        unsigned char *ssldata = BSB_WORK_PTR(sslbsb);
+        int ssllen = MIN(BSB_REMAINING(sslbsb) - 5, ssldata[3] << 8 | ssldata[4]);
+
+        BSB pbsb;
+        BSB_INIT(pbsb, ssldata + 5, ssllen);
+
+        if (BSB_REMAINING(pbsb) > 7)
+        {
+            unsigned char *pdata = BSB_WORK_PTR(pbsb);
+            int plen = MIN(BSB_REMAINING(pbsb) - 4, pdata[2] << 8 | pdata[3]);
+
+            uint16_t ver = 0;
+            BSB_IMPORT_skip(pbsb, 4); // type + len
+            BSB_IMPORT_u16(pbsb, ver);
+
+            BSB_EXPORT_sprintf(ja3bsb, "%d,", ver);
+
+            BSB cbsb;
+            BSB_INIT(cbsb, pdata + 6, plen - 2); // The - 4 for plen is done above, confusing
+
+            if (BSB_REMAINING(cbsb) > 32)
+            {
+                BSB_IMPORT_skip(cbsb, 32); // Random
+
+                int skiplen = 0;
+                BSB_IMPORT_u08(cbsb, skiplen); // Session Id Length
+                if (skiplen > 0 && BSB_REMAINING(cbsb) > skiplen)
+                {
+                    // unsigned char *ptr = BSB_WORK_PTR(cbsb);
+                    // char sessionId[513];
+                    // int i;
+
+                    // for (i = 0; i < skiplen; i++)
+                    // {
+                    //     sessionId[i * 2] = moloch_char_to_hexstr[ptr[i]][0];
+                    //     sessionId[i * 2 + 1] = moloch_char_to_hexstr[ptr[i]][1];
+                    // }
+                    // sessionId[skiplen * 2] = 0;
+                    // moloch_field_string_add(srcIdField, session, sessionId, skiplen * 2, TRUE);
+                }
+                BSB_IMPORT_skip(cbsb, skiplen); // Session Id
+
+                BSB_IMPORT_u16(cbsb, skiplen); // Ciper Suites Length
+                while (BSB_NOT_ERROR(cbsb) && skiplen > 0)
+                {
+                    uint16_t c = 0;
+                    BSB_IMPORT_u16(cbsb, c);
+                    if (!tls_is_grease_value(c))
+                    {
+                        BSB_EXPORT_sprintf(ja3bsb, "%d-", c);
+                    }
+                    skiplen -= 2;
+                }
+                BSB_EXPORT_rewind(ja3bsb, 1); // Remove last -
+                BSB_EXPORT_u08(ja3bsb, ',');
+
+                BSB_IMPORT_u08(cbsb, skiplen);  // Compression Length
+                BSB_IMPORT_skip(cbsb, skiplen); // Compressions
+
+                if (BSB_REMAINING(cbsb) > 6)
+                {
+                    int etotlen = 0;
+                    BSB_IMPORT_u16(cbsb, etotlen); // Extensions Length
+
+                    etotlen = MIN(etotlen, BSB_REMAINING(cbsb));
+
+                    BSB ebsb;
+                    BSB_INIT(ebsb, BSB_WORK_PTR(cbsb), etotlen);
+
+                    while (BSB_REMAINING(ebsb) > 4)
+                    {
+                        uint16_t etype = 0, elen = 0;
+
+                        BSB_IMPORT_u16(ebsb, etype);
+                        BSB_IMPORT_u16(ebsb, elen);
+
+                        if (!tls_is_grease_value(etype))
+                            BSB_EXPORT_sprintf(eja3bsb, "%d-", etype);
+
+                        if (elen > BSB_REMAINING(ebsb))
+                            break;
+
+                        if (etype == 0)
+                        { // SNI
+                            BSB snibsb;
+                            BSB_INIT(snibsb, BSB_WORK_PTR(ebsb), elen);
+                            BSB_IMPORT_skip(ebsb, elen);
+
+                            int sni = 0;
+                            BSB_IMPORT_u16(snibsb, sni); // list len
+                            if (sni != BSB_REMAINING(snibsb))
+                                continue;
+
+                            BSB_IMPORT_u08(snibsb, sni); // type
+                            if (sni != 0)
+                                continue;
+
+                            BSB_IMPORT_u16(snibsb, sni); // len
+                            if (sni != BSB_REMAINING(snibsb))
+                                continue;
+
+							memcpy(sni_buff, (char *)BSB_WORK_PTR(snibsb), (sni>sni_buff_len ? sni_buff_len : sni));
+                            // moloch_field_string_add(hostField, session, (char *)BSB_WORK_PTR(snibsb), sni, TRUE);
+                        }
+                        else if (etype == 0x000a)
+                        { // Elliptic Curves
+                            BSB bsb;
+                            BSB_INIT(bsb, BSB_WORK_PTR(ebsb), elen);
+                            BSB_IMPORT_skip(ebsb, elen);
+
+                            uint16_t llen = 0;
+                            BSB_IMPORT_u16(bsb, llen); // list len
+                            while (llen > 0 && !BSB_IS_ERROR(bsb))
+                            {
+                                uint16_t c = 0;
+                                BSB_IMPORT_u16(bsb, c);
+                                if (!tls_is_grease_value(c))
+                                {
+                                    BSB_EXPORT_sprintf(ecja3bsb, "%d-", c);
+                                }
+                                llen -= 2;
+                            }
+                            BSB_EXPORT_rewind(ecja3bsb, 1); // Remove last -
+                        }
+                        else if (etype == 0x000b)
+                        { // Elliptic Curves point formats
+                            BSB bsb;
+                            BSB_INIT(bsb, BSB_WORK_PTR(ebsb), elen);
+                            BSB_IMPORT_skip(ebsb, elen);
+
+                            uint16_t llen = 0;
+                            BSB_IMPORT_u08(bsb, llen); // list len
+                            while (llen > 0 && !BSB_IS_ERROR(bsb))
+                            {
+                                uint8_t c = 0;
+                                BSB_IMPORT_u08(bsb, c);
+                                BSB_EXPORT_sprintf(ecfja3bsb, "%d-", c);
+                                llen -= 1;
+                            }
+                            BSB_EXPORT_rewind(ecfja3bsb, 1); // Remove last -
+                        }
+                        else
+                        {
+                            BSB_IMPORT_skip(ebsb, elen);
+                        }
+                    }
+                    BSB_EXPORT_rewind(eja3bsb, 1); // Remove last -
+                }
+            }
+        }
+        BSB_IMPORT_skip(sslbsb, ssllen + 5);
+
+#if 0
+        if (BSB_LENGTH(ja3bsb) > 0 && BSB_NOT_ERROR(ja3bsb) && BSB_NOT_ERROR(ecja3bsb) && BSB_NOT_ERROR(eja3bsb) && BSB_NOT_ERROR(ecfja3bsb))
+        {
+            BSB_EXPORT_sprintf(ja3bsb, "%.*s,%.*s,%.*s", (int)BSB_LENGTH(eja3bsb), eja3, (int)BSB_LENGTH(ecja3bsb), ecja3, (int)BSB_LENGTH(ecfja3bsb), ecfja3);
+            printf("JA3: %s\n", ja3_fp);
+        }
+#endif
+		return 1;
+    }
+
+    return 0;
+}
+
+static void free_ja3_fingerprint_label(int thread_seq, void *value)
+{
+	struct _ssl_ja3_info_t *ja3_info=(struct _ssl_ja3_info_t *)value;
+	if(value!=NULL)
+	{
+		dictator_free(thread_seq, (void *)ja3_info->sni);
+		ja3_info->sni=NULL;
+
+		dictator_free(thread_seq, (void *)ja3_info->fp);
+		ja3_info->sni=NULL;
+
+		dictator_free(thread_seq, value);
+		value=NULL;
+	}
+
+	return ;
+}
+
+struct _ssl_ja3_info_t *ssl_get_ja3_fingerprint(struct streaminfo *stream, unsigned char *payload, int payload_len, int thread_seq)
+{
+	int ret=0;
+	char ja3_fp[30000]={0};
+	char sni_buff[1024]={0};
+	
+	struct _ssl_ja3_info_t *ja3_info=(struct _ssl_ja3_info_t *)project_req_get_struct(stream, g_ssl_ja3_fingerprint_label_id);
+	if(ja3_info!=NULL)
+	{
+		return ja3_info;
+	}
+
+	ret=ssl_generate_ja3_fingerprint(payload, payload_len, ja3_fp, sizeof(ja3_fp), sni_buff, sizeof(sni_buff));
+	if(ret==1)
+	{
+		ja3_info=(struct _ssl_ja3_info_t *)dictator_malloc(thread_seq, sizeof(struct _ssl_ja3_info_t));
+
+		if(strlen(sni_buff)>0 && strlen(sni_buff)<sizeof(sni_buff))
+		{
+			ja3_info->sni_len=strlen(sni_buff);
+			ja3_info->sni=(char *)dictator_malloc(thread_seq, ja3_info->sni_len+1);
+			memcpy(ja3_info->sni, sni_buff, ja3_info->sni_len);
+			ja3_info->sni[ja3_info->sni_len]='\0';
+		}
+
+		if(strlen(ja3_fp)>0 && strlen(ja3_fp)<sizeof(ja3_fp))
+		{
+			ja3_info->fp=(char *)dictator_malloc(thread_seq, MD5_DIGEST_LENGTH*2+1);
+			ja3_info->fp_len=ja3_md5sum(ja3_fp, strlen(ja3_fp), ja3_info->fp, MD5_DIGEST_LENGTH*2+1);
+			ja3_info->fp[ja3_info->fp_len]='\0';
+		}
+		
+		project_req_add_struct(stream, g_ssl_ja3_fingerprint_label_id, (void *)ja3_info);
+
+		return ja3_info;
+	}
+
+	return NULL;
+}
+
+int ssl_ja3_init(void)
+{
+	g_ssl_ja3_fingerprint_label_id=project_producer_register("JA3_FINGERPRINT_LABEL", "struct", free_ja3_fingerprint_label);
+
+	return 0;
+}