Dump WIP of opencl port

1 files changed, 200 insertions, 0 deletions

diff --git a/sand-leek-cl.c b/sand-leek-cl.c
new file mode 100644
index 0000000..a21829d
--- /dev/null
+++ b/sand-leek-cl.c
@@ -0,0 +1,200 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+//#include <openssl/sha.h>
+#include <openssl/rsa.h>
+
+#include "onion_base32.h"
+#include "trampoline.h"
+//#include "sha1.h"
+
+
+/* FIXME make loop internal to run(), rather than rebuilding kernel etc
+ * each new key */
+int run(const char *preferred_platform, unsigned char *search_raw, size_t raw_len, struct sha_data *sha)
+{
+	fprintf(stderr, "Building CL trampoline... ");
+	if (tramp_init(preferred_platform)) {
+		fprintf(stderr, "Failed.\n");
+		return 1;
+	}
+	fprintf(stderr, "Done.\n");
+
+	fprintf(stderr, "Loading kernel source from file... ");
+	if (tramp_load_kernel(CL_SRC_DIR"onion.cl")) {
+		fprintf(stderr, "Failed.\n");
+		return 1;
+	}
+	fprintf(stderr, "Loaded.\n");
+
+	fprintf(stderr, "Compiling kernel source... ");
+	if (tramp_compile_kernel()) {
+		fprintf(stderr, "Failed:\n%s\n", tramp_get_build_log());
+		return 1;
+	}
+	fprintf(stderr, "Compiled.\n");
+
+	fprintf(stderr, "Setting kernel arguments... ");
+	if (tramp_set_kernel_args(raw_len)) {
+		fprintf(stderr, "Failed.\n");
+		return 1;
+	}
+	fprintf(stderr, "Done.\n");
+
+	fprintf(stderr, "Transferring search target to device... ");
+	if (tramp_copy_search(search_raw)) {
+		fprintf(stderr, "Failed.\n");
+		return 1;
+	}
+	fprintf(stderr, "Done.\n");
+
+	fprintf(stderr, "Transferring partial SHA work to device... ");
+	if (tramp_copy_sha(sha)) {
+		fprintf(stderr, "Failed.\n");
+		return 1;
+	}
+	fprintf(stderr, "Done.\n");
+
+	fprintf(stderr, "Running kernel... ");
+	if (tramp_run_kernel()) {
+		fprintf(stderr, "Failed.\n");
+		return 1;
+	}
+	fprintf(stderr, "Done.\n");
+
+/*	char *buffer = malloc(size*size);
+	if (!buffer) {
+		perror("host data buffer malloc");
+		return 1;
+	}
+	fprintf(stderr, "Reading data from device... ");
+	if (tramp_copy_data((void*)&buffer, size*size)) {
+		fprintf(stderr, "Failed.\n");
+		return 1;
+	}
+	fprintf(stderr, "Done.\n");
+*/
+	fprintf(stderr, "Destroying CL trampoline... ");
+	tramp_destroy();
+	fprintf(stderr, "Blown to smitherines.\n");
+
+/*	free(buffer);*/
+	return 0;
+}
+
+void die_help(char *argv0)
+{
+	fprintf(stderr, "Syntax:\n%s [-p platform] [-s search]\n", argv0);
+	exit(1);
+}
+
+int main(int argc, char **argv)
+{
+	const char *search = 0;
+	char *preferred_platform = NULL;
+	char c = '\0';
+
+	while ((c = getopt(argc, argv, "s:p:")) != -1) {
+		switch (c) {
+		case 's':
+			search = optarg;
+			break;
+		case 'p':
+			preferred_platform = optarg;
+			break;
+		case '?':
+			die_help(argv[0]);
+			return 1; /* mostly unreachable */
+			break; /* unreachable */
+		}
+	}
+
+	/* FIXME sanatise the input search for non-base32 chars
+	 * Also investigate performance benefit from pre-unbase32-ing it
+	 * like the CPU-bound version does */
+
+	unsigned char search_raw[10];
+	/* padded array of the human-readable search */
+	char search_pad[16] = {0};
+	strncpy(search_pad, search, sizeof(search_pad));
+
+	/* decode desired base32 */
+	onion_base32_dec(search_raw, search_pad);
+
+	/* hangover code from sand-leek.c */
+	/* bitmasks to be used to compare remainder bits */
+	unsigned 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 */
+	size_t search_len = strlen(search);
+	int raw_len = (search_len*10)/16;
+	int bitmask = bitmasks[search_len % 8];
+	/* end hangover code from sand-leek.c */
+
+	RSA* rsa_key = NULL;
+	rsa_key = RSA_new();
+	if (!rsa_key) {
+		fprintf(stderr, "Failed to allocate RSA key\n");
+		return 1;
+	}
+
+#define EXPONENT_SIZE_BYTES 4
+#define EXPONENT_MIN 0x1FFFFFFF
+#define RSA_KEY_BITS 1024
+
+	unsigned long e = EXPONENT_MIN;
+	unsigned char *der_data = NULL;
+	unsigned char *tmp_data = NULL;
+	int der_length = 0;
+	struct sha_data sha_c;
+	BIGNUM *bignum_e = NULL;
+
+
+	bignum_e = BN_new();
+	if (!bignum_e) {
+		fprintf(stderr, "Failed to allocate bignum for exponent\n");
+		return 1;
+	}
+
+	e = EXPONENT_MIN;
+	BN_set_word(bignum_e, e);
+	if (!RSA_generate_key_ex(rsa_key, RSA_KEY_BITS, bignum_e, NULL)) {
+		fprintf(stderr, "Failed to generate RSA key\n");
+		return 1;
+	}
+	der_length = i2d_RSAPublicKey(rsa_key, NULL);
+	if (der_length <= 0) {
+		fprintf(stderr, "i2d failed\n");
+		return 1;
+	}
+	der_data = malloc(der_length);
+	if (!der_data) {
+		fprintf(stderr, "DER data malloc failed\n");
+		return 1;
+	}
+	tmp_data = der_data;
+	if (i2d_RSAPublicKey(rsa_key, &tmp_data) != der_length) {
+		fprintf(stderr, "DER formatting failed\n");
+		return 1;
+	}
+
+	sha_init(&sha_c);
+	sha_update(&sha_c, der_data, der_length - EXPONENT_SIZE_BYTES);
+	free(der_data);
+
+
+	run(preferred_platform, search_raw, raw_len, &sha_c);
+	return 0;
+}