Prepare cryptsetup functions for pwquality check.

[platform/upstream/cryptsetup.git] / src / utils_tools.c

diff --git a/src/utils_tools.c b/src/utils_tools.c
index 035e3fc..418f53e 100644 (file)
--- a/src/utils_tools.c
+++ b/src/utils_tools.c
@@ -28,6 +28,7 @@ int opt_batch_mode = 0;
 
 /* interrupt handling */
 volatile int quit = 0;
+static int signals_blocked = 0;
 
 static void int_handler(int sig __attribute__((__unused__)))
 {
@@ -38,21 +39,54 @@ void set_int_block(int block)
 {
        sigset_t signals_open;
 
+       log_dbg("%slocking interruption on signal.", block ? "B" : "Unb");
+
        sigemptyset(&signals_open);
        sigaddset(&signals_open, SIGINT);
        sigaddset(&signals_open, SIGTERM);
        sigprocmask(block ? SIG_SETMASK : SIG_UNBLOCK, &signals_open, NULL);
+       signals_blocked = block;
+       quit = 0;
 }
 
-void set_int_handler(void)
+void set_int_handler(int block)
 {
        struct sigaction sigaction_open;
 
+       log_dbg("Installing SIGINT/SIGTERM handler.");
        memset(&sigaction_open, 0, sizeof(struct sigaction));
        sigaction_open.sa_handler = int_handler;
        sigaction(SIGINT, &sigaction_open, 0);
        sigaction(SIGTERM, &sigaction_open, 0);
-       set_int_block(0);
+       set_int_block(block);
+}
+
+void check_signal(int *r)
+{
+       if (quit && !*r)
+               *r = -EINTR;
+}
+
+/* crypt_get_key() with signal handler */
+int tools_get_key(const char *prompt,
+                 char **key, size_t *key_size,
+                 size_t keyfile_offset, size_t keyfile_size_max,
+                 const char *key_file,
+                 int timeout, int verify, int pwquality,
+                 struct crypt_device *cd)
+{
+       int r, block;
+
+       block = signals_blocked;
+       if (block)
+               set_int_block(0);
+
+       r = crypt_get_key(prompt, key, key_size, keyfile_offset,
+                         keyfile_size_max, key_file, timeout, verify, cd);
+       if (block && !quit)
+               set_int_block(1);
+
+       return r;
 }
 
 __attribute__((format(printf, 5, 6)))
@@ -115,21 +149,30 @@ int yesDialog(const char *msg, void *usrptr __attribute__((unused)))
 {
        char *answer = NULL;
        size_t size = 0;
-       int r = 1;
+       int r = 1, block;
+
+       block = signals_blocked;
+       if (block)
+               set_int_block(0);
 
        if(isatty(STDIN_FILENO) && !opt_batch_mode) {
                log_std("\nWARNING!\n========\n");
                log_std("%s\n\nAre you sure? (Type uppercase yes): ", msg);
                if(getline(&answer, &size, stdin) == -1) {
-                       perror("getline");
-                       free(answer);
-                       return 0;
-               }
-               if(strcmp(answer, "YES\n"))
                        r = 0;
-               free(answer);
+                       /* Aborted by signal */
+                       if (!quit)
+                               log_err(_("Error reading response from terminal.\n"));
+                       else
+                               log_dbg("Query interrupted on signal.");
+               } else if(strcmp(answer, "YES\n"))
+                       r = 0;
        }
 
+       if (block && !quit)
+               set_int_block(1);
+
+       free(answer);
        return r;
 }