Author: gtjoseph Date: Fri Oct 3 10:53:59 2014 New Revision: 424447 URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=424447 Log: sorcery: Prevent SEGV in sorcery_wizard_create when there's no create function
When you call ast_sorcery_create() you don't necessarily know which wizard is going to be invoked. If it happens to be a wizard like 'config' that doesn't have a 'create' virtual function you get a segfault in the sorcery_wizard_create callback. This patch catches the null function pointer, does an ast_assert, and logs an error. Review: https://reviewboard.asterisk.org/r/4044/ Modified: branches/12/main/sorcery.c Modified: branches/12/main/sorcery.c URL: http://svnview.digium.com/svn/asterisk/branches/12/main/sorcery.c?view=diff&rev=424447&r1=424446&r2=424447 ============================================================================== --- branches/12/main/sorcery.c (original) +++ branches/12/main/sorcery.c Fri Oct 3 10:53:59 2014 @@ -1574,6 +1574,12 @@ const struct ast_sorcery_object_wizard *object_wizard = obj; const struct sorcery_details *details = arg; + if (!object_wizard->wizard->create) { + ast_assert(0); + ast_log(LOG_ERROR, "Sorcery wizard '%s' doesn't contain a 'create' virtual function.\n", + object_wizard->wizard->name); + return 0; + } return (!object_wizard->caching && !object_wizard->wizard->create(details->sorcery, object_wizard->data, details->obj)) ? CMP_MATCH | CMP_STOP : 0; } -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- svn-commits mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/svn-commits
