Clean up kdcinfo and kpasswdinfo files when exiting

3 files changed, 57 insertions, 2 deletions

diff --git a/src/providers/krb5/krb5_common.c b/src/providers/krb5/krb5_common.c
index 2b3331ed3..746b3f3c6 100644
--- a/src/providers/krb5/krb5_common.c
+++ b/src/providers/krb5/krb5_common.c
@@ -413,3 +413,43 @@ done:
     return ret;
 }
 
+void krb5_finalize(struct tevent_context *ev,
+                   struct tevent_signal *se,
+                   int signum,
+                   int count,
+                   void *siginfo,
+                   void *private_data)
+{
+    char *realm = (char *)private_data;
+    int ret;
+    errno_t err;
+    char *file;
+
+    file = talloc_asprintf(se, KDCINFO_TMPL, realm);
+    if(file == NULL) {
+        sig_term(signum);
+    }
+    errno = 0;
+    ret = unlink(file);
+    if (ret == -1) {
+        err = errno;
+        DEBUG(5, ("Could not remove [%s], [%d][%s]\n", file,
+                  err, strerror(err)));
+    }
+
+    errno = 0;
+    file = talloc_asprintf(se, KPASSWDINFO_TMPL, realm);
+    if(file == NULL) {
+        sig_term(signum);
+    }
+
+    errno = 0;
+    ret = unlink(file);
+    if (ret == -1) {
+        err = errno;
+        DEBUG(5, ("Could not remove [%s], [%d][%s]\n", file,
+                  err, strerror(err)));
+    }
+
+    sig_term(signum);
+}
diff --git a/src/providers/krb5/krb5_common.h b/src/providers/krb5/krb5_common.h
index 0b0da31f2..51afa0c65 100644
--- a/src/providers/krb5/krb5_common.h
+++ b/src/providers/krb5/krb5_common.h
@@ -75,4 +75,11 @@ errno_t write_krb5info_file(const char *realm, const char *kdc,
 int krb5_service_init(TALLOC_CTX *memctx, struct be_ctx *ctx,
                       const char *service_name, const char *servers,
                       const char *realm, struct krb5_service **_service);
+
+void krb5_finalize(struct tevent_context *ev,
+                   struct tevent_signal *se,
+                   int signum,
+                   int count,
+                   void *siginfo,
+                   void *private_data);
 #endif /* __KRB5_COMMON_H__ */
diff --git a/src/providers/krb5/krb5_init.c b/src/providers/krb5/krb5_init.c
index 83129d9c5..0bacb3f8f 100644
--- a/src/providers/krb5/krb5_init.c
+++ b/src/providers/krb5/krb5_init.c
@@ -55,6 +55,7 @@ int sssm_krb5_auth_init(struct be_ctx *bectx,
     const char *krb5_kpasswd_servers;
     const char *krb5_realm;
     const char *errstr;
+    char *sig_realm;
     int errval;
     int errpos;
 
@@ -126,13 +127,20 @@ int sssm_krb5_auth_init(struct be_ctx *bectx,
         goto fail;
     }
 
-    sige = tevent_add_signal(bectx->ev, ctx, SIGCHLD, SA_SIGINFO,
-                             child_sig_handler, NULL);
+    BlockSignals(false, SIGTERM);
+    sig_realm = talloc_strdup(ctx, krb5_realm);
+    if (sig_realm == NULL) {
+        ret = ENOMEM;
+        goto fail;
+    }
+    sige = tevent_add_signal(bectx->ev, ctx, SIGTERM, SA_SIGINFO,
+                             krb5_finalize, sig_realm);
     if (sige == NULL) {
         DEBUG(1, ("tevent_add_signal failed.\n"));
         ret = ENOMEM;
         goto fail;
     }
+    talloc_steal(sige, sig_realm);
 
     if (debug_to_file != 0) {
         ret = open_debug_file_ex("krb5_child", &debug_filep);