Modernize LibClamAV API usage

This should resolve issue #29.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>

src/klammail/clamdmail.c

@@ -99,6 +99,7 @@ int clamdscan(struct optstruct *opt)
   long double mb;
   const char *virname;
   struct cl_engine *engine = NULL;
+  struct cl_scan_options options;
   struct stat sb;
 
   if(optc(opt, 'V')) {
@@ -178,40 +179,48 @@ int clamdscan(struct optstruct *opt)
       /* Clamd isn't running, start it so it is available next time. */
       startclamd(opt);
 
-      if((engine = cl_engine_new()) == NULL) {
+      if ((ret = cl_init(CL_INIT_DEFAULT)) != CL_SUCCESS) {
-          printf("Database initialization error: %s\n", cl_strerror(ret));;
+          printf("Can't initialize libclamav: %s\n", cl_strerror(ret));
+          close(fd);
+          exit(2);
+      }
+
+      if(!(engine = cl_engine_new())) {
+          printf("Cannot create scanner engine: %s\n", cl_strerror(ret));;
           cl_engine_free(engine);
           close(fd);
           exit(2);
       }
 
       if(optc(opt, 'd')) {
-          if((ret = cl_load(getargc(opt, 'd'), engine, &no, CL_DB_STDOPT))) {
+          if((ret = cl_load(getargc(opt, 'd'), engine, &no, CL_DB_STDOPT)) != CL_SUCCESS) {
               printf("cl_load: %s\n", cl_strerror(ret));
               close(fd);
               return 50;
           }
       }else{
-          if((ret = cl_load(cl_retdbdir(), engine, &no, CL_DB_STDOPT))) {
+          if((ret = cl_load(cl_retdbdir(), engine, &no, CL_DB_STDOPT)) != CL_SUCCESS) {
-          printf("cl_loaddbdir: %s\n", cl_strerror(ret));
+              printf("cl_loaddbdir: %s\n", cl_strerror(ret));
-          close(fd);
+              close(fd);
-          exit(2);
+              exit(2);
           }
       }
 
       /* build engine */
-      if((ret = cl_engine_compile(engine))) {
+      if((ret = cl_engine_compile(engine)) != CL_SUCCESS ) {
-          printf("Database initialization error: %s\n", cl_strerror(ret));;
+          printf("Database initialization error: %s\n", cl_strerror(ret));
           cl_engine_free(engine);
           close(fd);
           exit(2);
       }
 
-      ret = cl_scandesc(fd, tmpnm, &virname, &size, engine,
+      /* scan file descriptor */
-             CL_SCAN_GENERAL_ALLMATCHES | CL_SCAN_GENERAL_HEURISTICS |
+      memset(&options, 0, sizeof(struct cl_scan_options));
-	     CL_SCAN_PARSE_ARCHIVE | CL_SCAN_PARSE_MAIL | CL_SCAN_PARSE_OLE2 |
+      options.parse    = ~0; // all parsers
-	     CL_SCAN_PARSE_HTML | CL_SCAN_PARSE_PDF );
+      options.general |= CL_SCAN_GENERAL_HEURISTICS;
-      printf("scandesc returned: %i\n", cl_strerror(ret));;
+      options.mail    |= CL_SCAN_MAIL_PARTIAL_MESSAGE; 
+      ret = cl_scandesc(fd, tmpnm, &virname, &size, engine, &options );
+      printf("scandesc returned: %i\n", cl_strerror(ret));
       if( ret == CL_VIRUS )
 	      printf("virus found\n");
       else