src/collectd.h: Poison various insecure string functions only when debugging is enabled.

[collectd.git] / src / perl.c

diff --git a/src/perl.c b/src/perl.c
index 2bd03af..3df11a3 100644 (file)
--- a/src/perl.c
+++ b/src/perl.c
@@ -27,13 +27,19 @@
 /* do not automatically get the thread specific perl interpreter */
 #define PERL_NO_GET_CONTEXT
 
+#define DONT_POISON_SPRINTF_YET 1
 #include "collectd.h"
+#undef DONT_POISON_SPRINTF_YET
 
 #include "configfile.h"
 
 #include <EXTERN.h>
 #include <perl.h>
 
+#if defined(COLLECT_DEBUG) && COLLECT_DEBUG && defined(__GNUC__) && __GNUC__
+# pragma GCC poison sprintf
+#endif
+
 #include <XSUB.h>
 
 /* Some versions of Perl define their own version of DEBUG... :-/ */
@@ -559,7 +565,7 @@ static int pplugin_dispatch_values (pTHX_ char *name, HV *values)
                list.host[DATA_MAX_NAME_LEN - 1] = '\0';
        }
        else {
-               strcpy (list.host, hostname_g);
+               sstrncpy (list.host, hostname_g, sizeof (list.host));
        }
 
        if (NULL != (tmp = hv_fetch (values, "plugin", 6, 0))) {
@@ -1475,7 +1481,9 @@ static int init_pi (int argc, char **argv)
        PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
 
        if (0 != perl_parse (aTHX_ xs_init, argc, argv, NULL)) {
-               log_err ("init_pi: Unable to bootstrap Collectd.");
+               SV *err = get_sv ("@", 1);
+               log_err ("init_pi: Unable to bootstrap Collectd: %s",
+                               SvPV_nolen (err));
 
                perl_destruct (perl_threads->head->interp);
                perl_free (perl_threads->head->interp);
@@ -1642,16 +1650,14 @@ static int perl_config (oconfig_item_t *ci)
 {
        int i = 0;
 
-       dTHX;
-
-       /* dTHX does not get any valid values in case Perl
-        * has not been initialized */
-       if (NULL == perl_threads)
-               aTHX = NULL;
+       dTHXa (NULL);
 
        for (i = 0; i < ci->children_num; ++i) {
                oconfig_item_t *c = ci->children + i;
 
+               if (NULL != perl_threads)
+                       aTHX = PERL_GET_CONTEXT;
+
                if (0 == strcasecmp (c->key, "LoadPlugin"))
                        perl_config_loadplugin (aTHX_ c);
                else if (0 == strcasecmp (c->key, "BaseName"))