-c: pattern fill support.

[tfcrypt.git] / tfcrypt.c

diff --git a/tfcrypt.c b/tfcrypt.c
index 7e9ef8c16915ddb15f7a718516f0ca9cdd518730..4ba1dd530cd179dd269abfa4cca8033c347f853b 100644 (file)
--- a/tfcrypt.c
+++ b/tfcrypt.c
@@ -149,6 +149,29 @@ _baddfname:
                                        counter_opt = TFC_CTR_RAND;
                                else if (!strcasecmp(optarg, "zero"))
                                        counter_opt = TFC_CTR_ZERO;
+                               else if (strchr(optarg, ':')) {
+                                       char *ss, chr;
+
+                                       counter_opt = TFC_CTR_SSET;
+                                       n = sizeof(ctr);
+
+                                       s = d = optarg; t = NULL;
+                                       while ((s = strtok_r(d, ",", &t))) {
+                                               if (d) d = NULL;
+
+                                               if (n == 0) break;
+                                               ss = strchr(s, ':');
+                                               if (!ss) continue;
+                                               *ss = 0; ss++;
+                                               chr = (char)strtoul(s, &stoi, 16);
+                                               if (!str_empty(stoi)) continue;
+                                               x = (size_t)strtoul(ss, &stoi, 10);
+                                               if (!str_empty(stoi)) continue;
+                                               if (x > n) x = n;
+                                               memset(ctr+(sizeof(ctr)-n), (int)chr, x);
+                                               n -= x;
+                                       }
+                               }
                                else counter_file = sksum_hashlist_file = optarg;
                                break;
                        case 'C':