lzma: make mandatory

Libhtp is starting to use it as well, so its safe to make it mandatory
here.

Remove guards for flash file decompression code.

configure.ac

@@ -603,24 +603,22 @@
                 if test "$with_liblzma_libraries" != "no"; then
                     LDFLAGS="${LDFLAGS}  -L${with_liblzma_libraries}"
                     LIBS="${TMPLIBS} -llzma"
-		else
-		    LIBS="${TMPLIBS} -llzma"
+                else
+                    LIBS="${TMPLIBS} -llzma"
                 fi
             fi]),LIBLZMA="no")
 
     if test "$LIBLZMA" != "yes"; then
         echo
-        echo "   Warning! liblzma library not found, you will not be"
-        echo "   able to decompress flash file compressed with lzma."
+        echo "   Error! liblzma library not found."
         echo "   Debian/Ubuntu: apt install liblzma-dev"
         echo "   Fedora: dnf install xz-devel"
         echo "   CentOS/RHEL: yum install xz-devel"
         echo
-        enable_liblzma=no
-    else
-        enable_liblzma=yes
-        LIBS="${TMPLIBS} -llzma"
+        exit 1
     fi
+    enable_liblzma=yes
+    LIBS="${TMPLIBS} -llzma"
 
   #libpcre
     AC_ARG_WITH(libpcre_includes,

src/tests/detect-http-server-body.c

@@ -4638,7 +4638,6 @@ libhtp:\n\
 
 static int DetectEngineHttpServerBodyFileDataTest24(void)
 {
-#ifdef HAVE_LIBLZMA
     char input[] = "\
 %YAML 1.1\n\
 ---\n\
@@ -4763,9 +4762,6 @@ libhtp:\n\
     UTHFreePackets(&p1, 1);
     UTHFreePackets(&p2, 1);
     PASS;
-#else
-    PASS;
-#endif /* HAVE_LIBLZMA */
 }
 
 static int DetectEngineHttpServerBodyFileDataTest25(void)
@@ -4895,7 +4891,6 @@ libhtp:\n\
 
 static int DetectEngineHttpServerBodyFileDataTest26(void)
 {
-#ifdef HAVE_LIBLZMA
     char input[] = "\
 %YAML 1.1\n\
 ---\n\
@@ -5019,9 +5014,6 @@ libhtp:\n\
     UTHFreePackets(&p1, 1);
     UTHFreePackets(&p2, 1);
     PASS;
-#else
-    PASS;
-#endif /* HAVE_LIBLZMA */
 }
 
 static int DetectEngineHttpServerBodyFileDataTest27(void)

src/util-file-decompression.c

@@ -165,9 +165,6 @@ int FileSwfDecompression(const uint8_t *buffer, uint32_t buffer_len,
     } else if ((swf_type == HTTP_SWF_COMPRESSION_LZMA || swf_type == HTTP_SWF_COMPRESSION_BOTH) &&
                compression_type == FILE_SWF_LZMA_COMPRESSION)
     {
-#ifndef HAVE_LIBLZMA
-        goto error;
-#else
         /* we need to setup the lzma header */
         /*
          * | 5 bytes         | 8 bytes             | n bytes         |
@@ -190,7 +187,6 @@ int FileSwfDecompression(const uint8_t *buffer, uint32_t buffer_len,
                                      out_buffer->buf + 8, out_buffer->len - 8);
         if (r == 0)
             goto error;
-#endif
     } else {
         goto error;
     }

src/util-file-swf-decompression.c

@@ -34,9 +34,7 @@
 
 #include <zlib.h>
 
-#ifdef HAVE_LIBLZMA
 #include <lzma.h>
-#endif
 
 #define MAX_SWF_DECOMPRESSED_LEN 50000000
 /*
@@ -130,7 +128,6 @@ int FileSwfZlibDecompression(DetectEngineThreadCtx *det_ctx,
  * | 4 bytes         | 4 bytes    | 4 bytes        | 5 bytes    | n bytes   | 6 bytes         |
  * | 'ZWS' + version | script len | compressed len | LZMA props | LZMA data | LZMA end marker |
  */
-#ifdef HAVE_LIBLZMA
 int FileSwfLzmaDecompression(DetectEngineThreadCtx *det_ctx,
                              uint8_t *compressed_data, uint32_t compressed_data_len,
                              uint8_t *decompressed_data, uint32_t decompressed_data_len)
@@ -183,4 +180,3 @@ int FileSwfLzmaDecompression(DetectEngineThreadCtx *det_ctx,
     lzma_end(&strm);
     return ret;
 }
-#endif /* HAVE_LIBLZMA */

src/util-file-swf-decompression.h

@@ -35,10 +35,8 @@ uint32_t FileGetSwfDecompressedLen(const uint8_t *buffer, uint32_t buffr_len);
 int FileSwfZlibDecompression(DetectEngineThreadCtx *det_ctx,
                              uint8_t *compressed_data, uint32_t compressed_data_len,
                              uint8_t *decompressed_data, uint32_t decompressed_data_len);
-#ifdef HAVE_LIBLZMA
 int FileSwfLzmaDecompression(DetectEngineThreadCtx *det_ctx,
                              uint8_t *compressed_data, uint32_t compressed_data_len,
                              uint8_t *decompressed_data, uint32_t decompressed_data_len);
-#endif
 
 #endif /* __UTIL_FILE_SWF_DECOMPRESSION_H__ */