Add library version check to prevent mismatch during dynamic linking

diff --git a/clients/tools/common.c b/clients/tools/common.c
index 3b4983336c0b544b48e9949e90db27b6c3b180ad..f342f45785fbce99ec9e4a9cd392fc614229b6af 100644 (file)
--- a/clients/tools/common.c
+++ b/clients/tools/common.c
@@ -455,9 +455,50 @@ tool_args( int argc, char **argv )
                }
     }
 
-       if (version) {
-               fprintf( stderr, "%s: %s", prog, __Version );
-               if (version > 1) exit( EXIT_SUCCESS );
+       {
+               /* prevent bad linking */
+               LDAPAPIInfo api;
+               api.ldapai_info_version = LDAP_API_INFO_VERSION;
+
+               if ( ldap_get_option(NULL, LDAP_OPT_API_INFO, &api) != LDAP_SUCCESS ) {
+                       fprintf( stderr, "%s: ldap_get_option(API_INFO) failed\n", prog );
+                       exit( EXIT_FAILURE );
+               }
+
+               if (api.ldapai_info_version != LDAP_API_INFO_VERSION) {
+                       fprintf( stderr, "LDAP APIInfo version mismatch: "
+                               "got %d, expected %d\n",
+                               api.ldapai_info_version, LDAP_API_INFO_VERSION );
+                       exit( EXIT_FAILURE );
+       }
+
+               if( api.ldapai_api_version != LDAP_API_VERSION ) {
+                       fprintf( stderr, "LDAP API version mismatch: "
+                               "got %d, expected %d\n",
+                               api.ldapai_api_version, LDAP_API_VERSION );
+                       exit( EXIT_FAILURE );
+               }
+
+               if( strcmp(api.ldapai_vendor_name, LDAP_VENDOR_NAME ) != 0 ) {
+                       fprintf( stderr, "LDAP vendor name mismatch: "
+                               "got %s, expected %s\n",
+                               api.ldapai_vendor_name, LDAP_VENDOR_NAME );
+                       exit( EXIT_FAILURE );
+               }
+
+               if( api.ldapai_vendor_version != LDAP_VENDOR_VERSION ) {
+                       fprintf( stderr, "LDAP vendor version mismatch: "
+                               "got %d, expected %d\n",
+                               api.ldapai_vendor_version, LDAP_VENDOR_VERSION );
+                       exit( EXIT_FAILURE );
+               }
+
+               if (version) {
+                       fprintf( stderr, "%s: %s\t(LDAP library: %s %d)\n",
+                               prog, __Version,
+                               LDAP_VENDOR_NAME, LDAP_VENDOR_VERSION );
+                       if (version > 1) exit( EXIT_SUCCESS );
+               }
        }
 
        if (protocol == -1)