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pattern.c
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pattern.c
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/*
* Vanitygen, vanity bitcoin address generator
* Copyright (C) 2011 <[email protected]>
*
* Vanitygen is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* Vanitygen is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Vanitygen. If not, see <http://www.gnu.org/licenses/>.
*/
#include "pattern.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
#include <pthread.h>
#include <openssl/sha.h>
#include <openssl/ripemd.h>
#include <openssl/bn.h>
#include <openssl/ec.h>
#include <openssl/obj_mac.h>
#include <pcre.h>
#include "util.h"
#include "avl.h"
/*
* Common code for execution helper
*/
EC_KEY *
vg_exec_context_new_key(void)
{
return EC_KEY_new_by_curve_name(NID_secp256k1);
}
/*
* Thread synchronization helpers
*/
static pthread_mutex_t vg_thread_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t vg_thread_rdcond = PTHREAD_COND_INITIALIZER;
static pthread_cond_t vg_thread_wrcond = PTHREAD_COND_INITIALIZER;
static pthread_cond_t vg_thread_upcond = PTHREAD_COND_INITIALIZER;
static void
__vg_exec_context_yield(vg_exec_context_t *vxcp)
{
vxcp->vxc_lockmode = 0;
while (vxcp->vxc_vc->vc_thread_excl) {
if (vxcp->vxc_stop) {
assert(vxcp->vxc_vc->vc_thread_excl);
vxcp->vxc_stop = 0;
pthread_cond_signal(&vg_thread_upcond);
}
pthread_cond_wait(&vg_thread_rdcond, &vg_thread_lock);
}
assert(!vxcp->vxc_stop);
assert(!vxcp->vxc_lockmode);
vxcp->vxc_lockmode = 1;
}
int
vg_exec_context_upgrade_lock(vg_exec_context_t *vxcp)
{
vg_exec_context_t *tp;
vg_context_t *vcp;
if (vxcp->vxc_lockmode == 2)
return 0;
pthread_mutex_lock(&vg_thread_lock);
assert(vxcp->vxc_lockmode == 1);
vxcp->vxc_lockmode = 0;
vcp = vxcp->vxc_vc;
if (vcp->vc_thread_excl++) {
assert(vxcp->vxc_stop);
vxcp->vxc_stop = 0;
pthread_cond_signal(&vg_thread_upcond);
pthread_cond_wait(&vg_thread_wrcond, &vg_thread_lock);
for (tp = vcp->vc_threads; tp != NULL; tp = tp->vxc_next) {
assert(!tp->vxc_lockmode);
assert(!tp->vxc_stop);
}
} else {
for (tp = vcp->vc_threads; tp != NULL; tp = tp->vxc_next) {
if (tp->vxc_lockmode) {
assert(tp->vxc_lockmode != 2);
tp->vxc_stop = 1;
}
}
do {
for (tp = vcp->vc_threads;
tp != NULL;
tp = tp->vxc_next) {
if (tp->vxc_lockmode) {
assert(tp->vxc_lockmode != 2);
pthread_cond_wait(&vg_thread_upcond,
&vg_thread_lock);
break;
}
}
} while (tp);
}
vxcp->vxc_lockmode = 2;
pthread_mutex_unlock(&vg_thread_lock);
return 1;
}
void
vg_exec_context_downgrade_lock(vg_exec_context_t *vxcp)
{
pthread_mutex_lock(&vg_thread_lock);
assert(vxcp->vxc_lockmode == 2);
assert(!vxcp->vxc_stop);
if (!--vxcp->vxc_vc->vc_thread_excl) {
vxcp->vxc_lockmode = 1;
pthread_cond_broadcast(&vg_thread_rdcond);
pthread_mutex_unlock(&vg_thread_lock);
return;
}
pthread_cond_signal(&vg_thread_wrcond);
__vg_exec_context_yield(vxcp);
pthread_mutex_unlock(&vg_thread_lock);
}
int
vg_exec_context_init(vg_context_t *vcp, vg_exec_context_t *vxcp)
{
pthread_mutex_lock(&vg_thread_lock);
memset(vxcp, 0, sizeof(*vxcp));
vxcp->vxc_vc = vcp;
BN_init(&vxcp->vxc_bntarg);
BN_init(&vxcp->vxc_bnbase);
BN_init(&vxcp->vxc_bntmp);
BN_init(&vxcp->vxc_bntmp2);
BN_set_word(&vxcp->vxc_bnbase, 58);
vxcp->vxc_bnctx = BN_CTX_new();
assert(vxcp->vxc_bnctx);
vxcp->vxc_key = vg_exec_context_new_key();
assert(vxcp->vxc_key);
EC_KEY_precompute_mult(vxcp->vxc_key, vxcp->vxc_bnctx);
vxcp->vxc_lockmode = 0;
vxcp->vxc_stop = 0;
vxcp->vxc_next = vcp->vc_threads;
vcp->vc_threads = vxcp;
vxcp->vc_combined_compressed = vcp->vc_compressed;
__vg_exec_context_yield(vxcp);
pthread_mutex_unlock(&vg_thread_lock);
return 1;
}
void
vg_exec_context_del(vg_exec_context_t *vxcp)
{
printf("vg_exec_context_del\n");
vg_exec_context_t *tp, **pprev;
if (vxcp->vxc_lockmode == 2)
vg_exec_context_downgrade_lock(vxcp);
pthread_mutex_lock(&vg_thread_lock);
assert(vxcp->vxc_lockmode == 1);
vxcp->vxc_lockmode = 0;
for (pprev = &vxcp->vxc_vc->vc_threads, tp = *pprev;
(tp != vxcp) && (tp != NULL);
pprev = &tp->vxc_next, tp = *pprev);
assert(tp == vxcp);
*pprev = tp->vxc_next;
if (tp->vxc_stop)
pthread_cond_signal(&vg_thread_upcond);
BN_clear_free(&vxcp->vxc_bntarg);
BN_clear_free(&vxcp->vxc_bnbase);
BN_clear_free(&vxcp->vxc_bntmp);
BN_clear_free(&vxcp->vxc_bntmp2);
BN_CTX_free(vxcp->vxc_bnctx);
vxcp->vxc_bnctx = NULL;
pthread_mutex_unlock(&vg_thread_lock);
}
void
vg_exec_context_yield(vg_exec_context_t *vxcp)
{
if (vxcp->vxc_lockmode == 2)
vg_exec_context_downgrade_lock(vxcp);
else if (vxcp->vxc_stop) {
assert(vxcp->vxc_lockmode == 1);
pthread_mutex_lock(&vg_thread_lock);
__vg_exec_context_yield(vxcp);
pthread_mutex_unlock(&vg_thread_lock);
}
assert(vxcp->vxc_lockmode == 1);
}
void
vg_exec_context_consolidate_key(vg_exec_context_t *vxcp)
{
if (vxcp->vxc_delta) {
// privkey += delta
BN_clear(&vxcp->vxc_bntmp);
BN_set_word(&vxcp->vxc_bntmp, vxcp->vxc_delta);
BN_add(&vxcp->vxc_bntmp2,
EC_KEY_get0_private_key(vxcp->vxc_key),
&vxcp->vxc_bntmp);
vg_set_privkey(&vxcp->vxc_bntmp2, vxcp->vxc_key);
// delta = 0
vxcp->vxc_delta = 0;
}
}
void
vg_exec_context_calc_address(vg_exec_context_t *vxcp)
{
EC_POINT *pubkey;
const EC_GROUP *pgroup;
unsigned char eckey_buf[96], hash1[32], hash2[20];
int len;
vg_exec_context_consolidate_key(vxcp);
pgroup = EC_KEY_get0_group(vxcp->vxc_key);
pubkey = EC_POINT_new(pgroup);
EC_POINT_copy(pubkey, EC_KEY_get0_public_key(vxcp->vxc_key));
if (vxcp->vxc_vc->vc_pubkey_base) {
EC_POINT_add(pgroup,
pubkey,
pubkey,
vxcp->vxc_vc->vc_pubkey_base,
vxcp->vxc_bnctx);
}
len = EC_POINT_point2oct(pgroup,
pubkey,
vxcp->vc_combined_compressed ? POINT_CONVERSION_COMPRESSED : POINT_CONVERSION_UNCOMPRESSED,
eckey_buf,
sizeof(eckey_buf),
vxcp->vxc_bnctx);
SHA256(eckey_buf, len, hash1);
RIPEMD160(hash1, sizeof(hash1), hash2);
memcpy(&vxcp->vxc_binres[1],
hash2, 20);
EC_POINT_free(pubkey);
}
enum {
timing_hist_size = 5
};
typedef struct _timing_info_s {
struct _timing_info_s *ti_next;
pthread_t ti_thread;
unsigned long ti_last_rate;
unsigned long long ti_hist_time[timing_hist_size];
unsigned long ti_hist_work[timing_hist_size];
int ti_hist_last;
} timing_info_t;
static pthread_mutex_t timing_mutex = PTHREAD_MUTEX_INITIALIZER;
int
vg_output_timing(vg_context_t *vcp, int cycle, struct timeval *last)
{
pthread_t me;
struct timeval tvnow, tv;
timing_info_t *tip, *mytip;
unsigned long long rate, myrate = 0, mytime, total, sincelast;
int p, i;
/* Compute the rate */
gettimeofday(&tvnow, NULL);
timersub(&tvnow, last, &tv);
memcpy(last, &tvnow, sizeof(*last));
mytime = tv.tv_usec + (1000000ULL * tv.tv_sec);
if (!mytime)
mytime = 1;
rate = 0;
pthread_mutex_lock(&timing_mutex);
me = pthread_self();
for (tip = vcp->vc_timing_head, mytip = NULL;
tip != NULL; tip = tip->ti_next) {
if (pthread_equal(tip->ti_thread, me)) {
mytip = tip;
p = ((tip->ti_hist_last + 1) % timing_hist_size);
tip->ti_hist_time[p] = mytime;
tip->ti_hist_work[p] = cycle;
tip->ti_hist_last = p;
mytime = 0;
myrate = 0;
for (i = 0; i < timing_hist_size; i++) {
mytime += tip->ti_hist_time[i];
myrate += tip->ti_hist_work[i];
}
myrate = (myrate * 1000000) / mytime;
tip->ti_last_rate = myrate;
rate += myrate;
} else
rate += tip->ti_last_rate;
}
if (!mytip) {
mytip = (timing_info_t *) malloc(sizeof(*tip));
mytip->ti_next = vcp->vc_timing_head;
mytip->ti_thread = me;
vcp->vc_timing_head = mytip;
mytip->ti_hist_last = 0;
mytip->ti_hist_time[0] = mytime;
mytip->ti_hist_work[0] = cycle;
for (i = 1; i < timing_hist_size; i++) {
mytip->ti_hist_time[i] = 1;
mytip->ti_hist_work[i] = 0;
}
myrate = ((unsigned long long)cycle * 1000000) / mytime;
mytip->ti_last_rate = myrate;
rate += myrate;
}
vcp->vc_timing_total += cycle;
if (vcp->vc_timing_prevfound != vcp->vc_found) {
vcp->vc_timing_prevfound = vcp->vc_found;
vcp->vc_timing_sincelast = 0;
}
vcp->vc_timing_sincelast += cycle;
if (mytip != vcp->vc_timing_head) {
pthread_mutex_unlock(&timing_mutex);
return myrate;
}
total = vcp->vc_timing_total;
sincelast = vcp->vc_timing_sincelast;
pthread_mutex_unlock(&timing_mutex);
vcp->vc_output_timing(vcp, sincelast, rate, total);
return myrate;
}
void
vg_context_thread_exit(vg_context_t *vcp)
{
timing_info_t *tip, **ptip;
pthread_t me;
pthread_mutex_lock(&timing_mutex);
me = pthread_self();
for (ptip = &vcp->vc_timing_head, tip = *ptip;
tip != NULL;
ptip = &tip->ti_next, tip = *ptip) {
if (!pthread_equal(tip->ti_thread, me))
continue;
*ptip = tip->ti_next;
free(tip);
break;
}
pthread_mutex_unlock(&timing_mutex);
}
static void
vg_timing_info_free(vg_context_t *vcp)
{
timing_info_t *tp;
while (vcp->vc_timing_head != NULL) {
tp = vcp->vc_timing_head;
vcp->vc_timing_head = tp->ti_next;
free(tp);
}
}
void
vg_output_timing_console(vg_context_t *vcp, double count,
unsigned long long rate, unsigned long long total)
{
double targ;
char *unit;
char linebuf[80];
int rem, p;
targ = rate;
unit = "key/s";
if (targ > 1000) {
unit = "Kkey/s";
targ /= 1000.0;
if (targ > 1000) {
unit = "Mkey/s";
targ /= 1000.0;
}
}
rem = sizeof(linebuf);
p = snprintf(linebuf, rem, "[%.2f %s][total %lld]",
targ, unit, total);
assert(p > 0);
rem -= p;
if (rem < 0)
rem = 0;
if (rem) {
memset(&linebuf[sizeof(linebuf)-rem], 0x20, rem);
linebuf[sizeof(linebuf)-1] = '\0';
}
printf("\r%s", linebuf);
fflush(stdout);
}
void
//vg_output_match_console(vg_context_t *vcp, EC_KEY *pkey, const char *pattern)
vg_output_match_console(vg_context_t *vcp, vg_exec_context_t *vxcp, const char *pattern)
{
unsigned char key_buf[512], *pend;
char addr_buf[64], addr2_buf[64];
char privkey_buf[128];
char * privkey_str = privkey_buf;
const char *keytype = "Privkey";
int len;
int isscript = (vcp->vc_format == VCF_SCRIPT);
EC_KEY *pkey = vxcp->vxc_key;
EC_POINT *ppnt;
int free_ppnt = 0;
if (vcp->vc_pubkey_base) {
ppnt = EC_POINT_new(EC_KEY_get0_group(pkey));
EC_POINT_copy(ppnt, EC_KEY_get0_public_key(pkey));
EC_POINT_add(EC_KEY_get0_group(pkey),
ppnt,
ppnt,
vcp->vc_pubkey_base,
NULL);
free_ppnt = 1;
keytype = "PrivkeyPart";
} else {
ppnt = (EC_POINT *) EC_KEY_get0_public_key(pkey);
}
assert(EC_KEY_check_key(pkey));
// if (vcp->vc_combined_compressed)
if (vxcp->vc_combined_compressed)
vg_encode_address_compressed(ppnt,
EC_KEY_get0_group(pkey),
vcp->vc_pubkeytype, addr_buf);
else
vg_encode_address(ppnt,
EC_KEY_get0_group(pkey),
vcp->vc_pubkeytype, addr_buf);
if (isscript)
vg_encode_script_address(ppnt,
EC_KEY_get0_group(pkey),
vcp->vc_addrtype, addr2_buf);
if (vcp->vc_key_protect_pass) {
len = vg_protect_encode_privkey(privkey_buf,
pkey, vcp->vc_privtype,
VG_PROTKEY_DEFAULT,
vcp->vc_key_protect_pass);
if (len) {
keytype = "Protkey";
} else {
fprintf(stderr,
"ERROR: could not password-protect key\n");
vcp->vc_key_protect_pass = NULL;
}
}
if (!vcp->vc_key_protect_pass) {
// if (vcp->vc_combined_compressed)
privkey_str = BN_bn2hex(EC_KEY_get0_private_key(pkey));
//printf("Privkey (hex): %s\n", privkey_str);
/*
if (vxcp->vc_combined_compressed)
vg_encode_privkey_compressed(pkey, vcp->vc_privtype, privkey_buf);
else
vg_encode_privkey(pkey, vcp->vc_privtype, privkey_buf);
*/
}
if (!vcp->vc_result_file || (vcp->vc_verbose > 1)) {
//printf("\r%79s\rPattern: %s\n", "", pattern);
}
if (vcp->vc_verbose > 0) {
if (vcp->vc_verbose > 1) {
pend = key_buf;
len = i2o_ECPublicKey(pkey, &pend);
printf("Pubkey (hex): ");
dumphex(key_buf, len);
pend = key_buf;
len = i2d_ECPrivateKey(pkey, &pend);
printf("Privkey (ASN1): ");
dumphex(key_buf, len);
}
}
if (!vcp->vc_result_file || (vcp->vc_verbose > 0)) {
if (isscript)
printf("P2SHAddress: %s\n", addr2_buf);
printf("\nAddress: %s\n"
"%s (hex): %s\n",
addr_buf, keytype, privkey_str);
}
if (vcp->vc_result_file) {
FILE *fp = fopen(vcp->vc_result_file, "a");
if (!fp) {
fprintf(stderr,
"ERROR: could not open result file: %s\n",
strerror(errno));
} else {
if (isscript)
fprintf(fp, "P2SHAddress: %s\n", addr2_buf);
fprintf(fp,
"Address: %s\n"
"%s (hex): %s\n",
addr_buf, keytype, privkey_str);
fclose(fp);
}
}
if (free_ppnt)
EC_POINT_free(ppnt);
}
void
vg_context_free(vg_context_t *vcp)
{
vg_timing_info_free(vcp);
vcp->vc_free(vcp);
}
int
vg_context_add_patterns(vg_context_t *vcp,
const char ** const patterns, int npatterns)
{
printf("Searching for %d addresses\n", npatterns);
vcp->patterns = (char*)calloc(20 /* address size */, npatterns);
for (int i=0; i<npatterns; i++) {
int len = strlen(patterns[i]);
while (len) if (strchr(" \r\n\t", patterns[i][len-1])) len--; else break;
if (len != 33 && len != 34) {
printf("Wrong address length at line %d: %d (must be 33 or 34)\n", i+1, len);
exit(-1);
}
char buf[21];
if (!vg_b58_decode_check(patterns[i], buf, 21)) return 0;
memcpy(vcp->patterns+i*20, buf+1, 20);
}
return vcp->vc_add_patterns(vcp, patterns, npatterns);
}
void
vg_context_clear_all_patterns(vg_context_t *vcp)
{
free(vcp->patterns);
vcp->patterns = NULL;
}
int
vg_context_start_threads(vg_context_t *vcp)
{
vg_exec_context_t *vxcp;
int res;
for (vxcp = vcp->vc_threads; vxcp != NULL; vxcp = vxcp->vxc_next) {
if (vcp->vc_verbose > 1) printf("\nStart a thread");
res = pthread_create((pthread_t *) &vxcp->vxc_pthread,
NULL,
(void *(*)(void *)) vxcp->vxc_threadfunc,
vxcp);
if (res) {
fprintf(stderr, "ERROR: could not create thread: %d\n",
res);
vg_context_stop_threads(vcp);
return -1;
}
vxcp->vxc_thread_active = 1;
}
return 0;
}
void
vg_context_stop_threads(vg_context_t *vcp)
{
vcp->vc_halt = 1;
vg_context_wait_for_completion(vcp);
vcp->vc_halt = 0;
}
void
vg_context_wait_for_completion(vg_context_t *vcp)
{
vg_exec_context_t *vxcp;
for (vxcp = vcp->vc_threads; vxcp != NULL; vxcp = vxcp->vxc_next) {
if (!vxcp->vxc_thread_active)
continue;
pthread_join((pthread_t) vxcp->vxc_pthread, NULL);
vxcp->vxc_thread_active = 0;
}
}
/*
* Address prefix AVL tree node
*/
const int vpk_nwords = (25 + sizeof(BN_ULONG) - 1) / sizeof(BN_ULONG);
typedef struct _vg_prefix_s {
avl_item_t vp_item;
struct _vg_prefix_s *vp_sibling;
const char *vp_pattern;
} vg_prefix_t;
static void
vg_prefix_free(vg_prefix_t *vp)
{
free(vp);
}
int str_cmp(const char * a, const char * b) {
for (int i=0; a[i] || b[i]; i++) {
if (a[i]<b[i]) return -1;
if (a[i]>b[i]) return 1;
}
return 0;
}
static vg_prefix_t *
vg_prefix_avl_search(avl_root_t *rootp, char * pattern)
{
vg_prefix_t *vp;
avl_item_t *itemp = rootp->ar_root;
while (itemp) {
vp = avl_item_entry(itemp, vg_prefix_t, vp_item);
int cmp = str_cmp(pattern, vp->vp_pattern);
if (cmp < 0) {
itemp = itemp->ai_left;
} else {
if (cmp > 0) {
itemp = itemp->ai_right;
} else
return vp;
}
}
return NULL;
}
static vg_prefix_t *
vg_prefix_avl_insert(avl_root_t *rootp, vg_prefix_t *vpnew)
{
vg_prefix_t *vp;
avl_item_t *itemp = NULL;
avl_item_t **ptrp = &rootp->ar_root;
while (*ptrp) {
itemp = *ptrp;
// ptrp = &itemp->ai_left;
vp = avl_item_entry(itemp, vg_prefix_t, vp_item);
int cmp = str_cmp(vpnew->vp_pattern, vp->vp_pattern);
if (cmp < 0) {
ptrp = &itemp->ai_left;
} else {
if (cmp > 0) {
ptrp = &itemp->ai_right;
} else
return vp;
}
}
vpnew->vp_item.ai_up = itemp;
itemp = &vpnew->vp_item;
*ptrp = itemp;
avl_insert_fix(rootp, itemp);
return NULL;
}
static vg_prefix_t *
vg_prefix_add(avl_root_t *rootp, const char *pattern)
{
vg_prefix_t *vp, *vp2;
vp = (vg_prefix_t *) malloc(sizeof(*vp));
if (vp) {
avl_item_init(&vp->vp_item);
vp->vp_sibling = NULL;
vp->vp_pattern = pattern;
vp2 = vg_prefix_avl_insert(rootp, vp);
if (vp2 != NULL) {
fprintf(stderr,
"Prefix '%s' ignored, overlaps '%s'\n",
pattern, vp2->vp_pattern);
vg_prefix_free(vp);
vp = NULL;
}
}
return vp;
}
static void
vg_prefix_delete(avl_root_t *rootp, vg_prefix_t *vp)
{
vg_prefix_t *sibp, *delp;
avl_remove(rootp, &vp->vp_item);
sibp = vp->vp_sibling;
while (sibp && sibp != vp) {
avl_remove(rootp, &sibp->vp_item);
delp = sibp;
sibp = sibp->vp_sibling;
vg_prefix_free(delp);
}
vg_prefix_free(vp);
}
typedef struct _vg_prefix_context_s {
vg_context_t base;
avl_root_t vcp_avlroot;
BIGNUM vcp_difficulty;
int vcp_caseinsensitive;
} vg_prefix_context_t;
void
vg_prefix_context_set_case_insensitive(vg_context_t *vcp, int caseinsensitive)
{
((vg_prefix_context_t *) vcp)->vcp_caseinsensitive = caseinsensitive;
}
static void
vg_prefix_context_clear_all_patterns(vg_context_t *vcp)
{
vg_prefix_context_t *vcpp = (vg_prefix_context_t *) vcp;
vg_prefix_t *vp;
unsigned long npfx_left = 0;
while (!avl_root_empty(&vcpp->vcp_avlroot)) {
vp = avl_item_entry(vcpp->vcp_avlroot.ar_root,
vg_prefix_t, vp_item);
vg_prefix_delete(&vcpp->vcp_avlroot, vp);
npfx_left++;
}
assert(npfx_left == vcpp->base.vc_npatterns);
vcpp->base.vc_npatterns = 0;
vcpp->base.vc_npatterns_start = 0;
vcpp->base.vc_found = 0;
BN_clear(&vcpp->vcp_difficulty);
}
static void
vg_prefix_context_free(vg_context_t *vcp)
{
vg_prefix_context_t *vcpp = (vg_prefix_context_t *) vcp;
vg_prefix_context_clear_all_patterns(vcp);
BN_clear_free(&vcpp->vcp_difficulty);
free(vcpp);
}
static int
vg_prefix_context_add_patterns(vg_context_t *vcp,
const char ** const patterns, int npatterns)
{
vg_prefix_context_t *vcpp = (vg_prefix_context_t *) vcp;
vg_prefix_t *vp;
BN_CTX *bnctx;
BIGNUM bntmp, bntmp2, bntmp3;
int i;
bnctx = BN_CTX_new();
BN_init(&bntmp);
BN_init(&bntmp2);
BN_init(&bntmp3);
for (i = 0; i < npatterns; i++) {
vp = vg_prefix_add(&vcpp->vcp_avlroot, patterns[i]);
if (!vp)
continue;
}
vcpp->base.vc_npatterns = npatterns;
BN_clear_free(&bntmp);
BN_clear_free(&bntmp2);
BN_clear_free(&bntmp3);
BN_CTX_free(bnctx);
return 1;
}
static int
vg_prefix_test(vg_exec_context_t *vxcp)
{
vg_prefix_context_t *vcpp = (vg_prefix_context_t *) vxcp->vxc_vc;
vg_prefix_t *vp;
int res = 0;
/*
* We constrain the prefix so that we can check for
* a match without generating the lower four byte
* check code.
*/
BN_bin2bn(vxcp->vxc_binres, 25, &vxcp->vxc_bntarg);
char addr[35];
vg_b58_encode_check(vxcp->vxc_binres, 21, addr);
research:
vp = vg_prefix_avl_search(&vcpp->vcp_avlroot, addr);
if (vp) {
if (vg_exec_context_upgrade_lock(vxcp))
goto research;
vg_exec_context_consolidate_key(vxcp);
// vcpp->base.vc_output_match(&vcpp->base, vxcp->vxc_key,
// vp->vp_pattern, &combined_compressed);
vcpp->base.vc_output_match(&vcpp->base, vxcp,
vp->vp_pattern);
vcpp->base.vc_found++;
if (vcpp->base.vc_only_one) {
return 2;
}
res = 1;
}
if (avl_root_empty(&vcpp->vcp_avlroot)) {
return 2;
}
return res;
}
vg_context_t *
vg_prefix_context_new(int addrtype, int privtype, int caseinsensitive)
{
vg_prefix_context_t *vcpp;
vcpp = (vg_prefix_context_t *) malloc(sizeof(*vcpp));
if (vcpp) {
memset(vcpp, 0, sizeof(*vcpp));
vcpp->base.vc_addrtype = addrtype;
vcpp->base.vc_privtype = privtype;
vcpp->base.vc_npatterns = 0;
vcpp->base.vc_npatterns_start = 0;
vcpp->base.vc_found = 0;
vcpp->base.vc_chance = 0.0;
vcpp->base.vc_free = vg_prefix_context_free;
vcpp->base.vc_add_patterns = vg_prefix_context_add_patterns;
vcpp->base.vc_clear_all_patterns =
vg_prefix_context_clear_all_patterns;
vcpp->base.vc_test = vg_prefix_test;
vcpp->base.vc_hash160_sort = NULL;
avl_root_init(&vcpp->vcp_avlroot);
BN_init(&vcpp->vcp_difficulty);
vcpp->vcp_caseinsensitive = caseinsensitive;
}
return &vcpp->base;
}
typedef struct _vg_regex_context_s {
vg_context_t base;
pcre **vcr_regex;
pcre_extra **vcr_regex_extra;
const char **vcr_regex_pat;
unsigned long vcr_nalloc;
} vg_regex_context_t;
static int
vg_regex_context_add_patterns(vg_context_t *vcp,
const char ** const patterns, int npatterns)
{
vg_regex_context_t *vcrp = (vg_regex_context_t *) vcp;
const char *pcre_errptr;
int pcre_erroffset;
unsigned long i, nres, count;
void **mem;
if (!npatterns)
return 1;
if (npatterns > (vcrp->vcr_nalloc - vcrp->base.vc_npatterns)) {
count = npatterns + vcrp->base.vc_npatterns;
if (count < (2 * vcrp->vcr_nalloc)) {
count = (2 * vcrp->vcr_nalloc);
}
if (count < 16) {
count = 16;
}
mem = (void **) malloc(3 * count * sizeof(void*));
if (!mem)
return 0;
for (i = 0; i < vcrp->base.vc_npatterns; i++) {
mem[i] = vcrp->vcr_regex[i];
mem[count + i] = vcrp->vcr_regex_extra[i];
mem[(2 * count) + i] = (void *) vcrp->vcr_regex_pat[i];
}
if (vcrp->vcr_nalloc)
free(vcrp->vcr_regex);
vcrp->vcr_regex = (pcre **) mem;
vcrp->vcr_regex_extra = (pcre_extra **) &mem[count];
vcrp->vcr_regex_pat = (const char **) &mem[2 * count];
vcrp->vcr_nalloc = count;
}
nres = vcrp->base.vc_npatterns;
for (i = 0; i < npatterns; i++) {
vcrp->vcr_regex[nres] =
pcre_compile(patterns[i], 0,
&pcre_errptr, &pcre_erroffset, NULL);
if (!vcrp->vcr_regex[nres]) {
const char *spaces = " ";
fprintf(stderr, "%s\n", patterns[i]);
while (pcre_erroffset > 16) {
fprintf(stderr, "%s", spaces);
pcre_erroffset -= 16;
}
if (pcre_erroffset > 0)
fprintf(stderr,
"%s", &spaces[16 - pcre_erroffset]);
fprintf(stderr, "^\nRegex error: %s\n", pcre_errptr);
continue;
}
vcrp->vcr_regex_extra[nres] =
pcre_study(vcrp->vcr_regex[nres], 0, &pcre_errptr);
if (pcre_errptr) {
fprintf(stderr, "Regex error: %s\n", pcre_errptr);
pcre_free(vcrp->vcr_regex[nres]);
continue;
}
vcrp->vcr_regex_pat[nres] = patterns[i];
nres += 1;
}
if (nres == vcrp->base.vc_npatterns)
return 0;
vcrp->base.vc_npatterns_start += (nres - vcrp->base.vc_npatterns);
vcrp->base.vc_npatterns = nres;
return 1;
}
static void
vg_regex_context_clear_all_patterns(vg_context_t *vcp)
{
vg_regex_context_t *vcrp = (vg_regex_context_t *) vcp;
int i;
for (i = 0; i < vcrp->base.vc_npatterns; i++) {
if (vcrp->vcr_regex_extra[i])
pcre_free(vcrp->vcr_regex_extra[i]);
pcre_free(vcrp->vcr_regex[i]);
}
vcrp->base.vc_npatterns = 0;
vcrp->base.vc_npatterns_start = 0;
vcrp->base.vc_found = 0;
}
static void
vg_regex_context_free(vg_context_t *vcp)
{
vg_regex_context_t *vcrp = (vg_regex_context_t *) vcp;
vg_regex_context_clear_all_patterns(vcp);
if (vcrp->vcr_nalloc)
free(vcrp->vcr_regex);
free(vcrp);
}
static int