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-rw-r--r--sand-leek.c59
1 files changed, 27 insertions, 32 deletions
diff --git a/sand-leek.c b/sand-leek.c
index 8de21fc..7f94126 100644
--- a/sand-leek.c
+++ b/sand-leek.c
@@ -23,27 +23,17 @@
#define RSA_KEY_BITS 1024
-static char bitmasks[] = {
- [1] = 0xF8, /* 5 MSB */
- [2] = 0xC0, /* 2 MSB */
- [3] = 0xFE, /* 7 MSB */
- [4] = 0xF0, /* 4 MSB */
- [5] = 0x80, /* 1 MSB */
- [6] = 0xFC, /* 6 MSB */
- [7] = 0xE0 /* 3 MSB */
-};
-
-
static char *search;
static char search_pad[16];
static unsigned char search_raw[10];
static size_t search_len;
+static int raw_len;
+static char bitmask;
sem_t working;
void*
work(void *arg) {
char onion[17];
- char bitmask;
unsigned char sha[20];
unsigned long e = EXPONENT_MIN;
unsigned int e_big_endian = 0;
@@ -115,25 +105,6 @@ work(void *arg) {
goto STOP;
}
- int raw_len = 0;
- switch (search_len) {
- case 1: raw_len = 0; break;
- case 2:
- case 3: raw_len = 1; break;
- case 4: raw_len = 2; break;
- case 5:
- case 6: raw_len = 3; break;
- case 7: raw_len = 4; break;
- case 8:
- case 9: raw_len = 5; break;
- case 10: raw_len = 6; break;
- case 11: raw_len = 6; break;
- case 12: raw_len = 7; break;
- case 13:
- case 14: raw_len = 8; break;
- case 15: raw_len = 9; break;
- case 16: raw_len = 10; break;
- }
if (memcmp(sha, search_raw, raw_len) == 0) {
/* check the remaining partial byte */
switch (search_len) {
@@ -142,7 +113,6 @@ work(void *arg) {
/* nothing to do; already a raw byte boundary */
break;
default:
- bitmask = bitmasks[search_len % 8];
if ((search_raw[raw_len] & bitmask) != (sha[raw_len] & bitmask)) {
e += 2;
continue;
@@ -205,6 +175,27 @@ STOP:
return NULL;
}
+int
+set_raw_params(void) {
+ /* bitmasks to be used to compare remainder bits */
+ static char bitmasks[] = {
+ [1] = 0xF8, /* 5 MSB */
+ [2] = 0xC0, /* 2 MSB */
+ [3] = 0xFE, /* 7 MSB */
+ [4] = 0xF0, /* 4 MSB */
+ [5] = 0x80, /* 1 MSB */
+ [6] = 0xFC, /* 6 MSB */
+ [7] = 0xE0 /* 3 MSB */
+ };
+
+ /* number of whole bytes of raw hash to compare:
+ * 10 is the size of the data a full onion address covers
+ * 16 is the size of the base32-encoded onion address */
+ raw_len = (search_len*10)/16;
+ bitmask = bitmasks[search_len % 8];
+ return 0;
+}
+
void
die_usage(const char *argv0) {
fprintf(stderr,
@@ -290,6 +281,10 @@ main(int argc, char **argv) {
return 1;
}
+ if (set_raw_params()) {
+ fprintf(stderr, "Search string of poor length\n");
+ return 1;
+ }
memset(search_pad, 0, sizeof(search_pad));
strncpy(search_pad, search, sizeof(search_pad));