4 files changed, 17 insertions, 62 deletions

diff --git a/opentracker.c b/opentracker.c
index 4d44950..f218589 100644
--- a/opentracker.c
+++ b/opentracker.c
@@ -28,6 +28,7 @@
 
 /* Opentracker */
 #include "ot_accesslist.h"
+#include "ot_hex.h"
 #include "ot_http.h"
 #include "ot_livesync.h"
 #include "ot_mutex.h"
@@ -646,16 +647,10 @@ void load_state(const char *const state_filename) {
   /* We do ignore anything that is not of the form "^[:xdigit:]:\d+:\d+" */
   while (fgets(inbuf, sizeof(inbuf), state_filehandle)) {
     size_t i;
-    for (i = 0; i < sizeof(ot_hash); ++i) {
-      int eger = 16 * scan_fromhex(inbuf[2 * i]) + scan_fromhex(inbuf[1 + 2 * i]);
-      if (eger < 0)
-        continue;
-      infohash[i] = eger;
-    }
 
-    if (i != sizeof(ot_hash))
+    if (!hex_tohash(infohash, inbuf))
       continue;
-    i *= 2;
+    i = 2 * sizeof(ot_hash);
 
     if (inbuf[i++] != ':' || !(consumed = scan_ulonglong(inbuf + i, &base)))
       continue;
diff --git a/ot_accesslist.c b/ot_accesslist.c
index 2827494..ee6adb2 100644
--- a/ot_accesslist.c
+++ b/ot_accesslist.c
@@ -20,10 +20,10 @@
 #include "fmt.h"
 #include "ip6.h"
 #include "mmap.h"
-#include "scan.h"
 
 /* Opentracker */
 #include "ot_accesslist.h"
+#include "ot_hex.h"
 #include "ot_vector.h"
 #include "trackerlogic.h"
 
@@ -128,20 +128,11 @@ static void accesslist_readfile(void) {
 
   /* We do ignore anything that is not of the form "^[:xdigit:]{40}[^:xdigit:].*" */
   while (read_offs <= map_end) {
-    size_t i;
-    for (i = 0; i < sizeof(ot_hash); ++i) {
-      int eger1 = scan_fromhex((unsigned char)read_offs[2 * i]);
-      int eger2 = scan_fromhex((unsigned char)read_offs[1 + 2 * i]);
-      if (eger1 < 0 || eger2 < 0)
-        break;
-      (*info_hash)[i] = (uint8_t)(eger1 * 16 + eger2);
-    }
-
-    if (i == sizeof(ot_hash)) {
+    if (hex_tohash(*info_hash, read_offs)) {
       read_offs += 40;
 
       /* Append accesslist to accesslist vector */
-      if (read_offs == map_end || scan_fromhex((unsigned char)*read_offs) < 0)
+      if (read_offs == map_end || !hex_isdigit((unsigned char)*read_offs))
         ++info_hash;
     }
 
@@ -261,7 +252,6 @@ static void     *accesslist_adddel_worker(char *fifoname, ot_accesslist *_Atomic
 
     while ((linelen = getline(&line, &linecap, fifo)) > 0) {
       ot_hash info_hash;
-      size_t  i;
 
       printf("Got line %*s", (int)linelen, line);
       /* We do ignore anything that is not of the form "^[:xdigit:]{40}[^:xdigit:].*"
@@ -269,15 +259,7 @@ static void     *accesslist_adddel_worker(char *fifoname, ot_accesslist *_Atomic
       if (linelen < 41)
         continue;
 
-      for (i = 0; i < sizeof(ot_hash); ++i) {
-        int eger1 = scan_fromhex((unsigned char)line[2 * i]);
-        int eger2 = scan_fromhex((unsigned char)line[1 + 2 * i]);
-        if (eger1 < 0 || eger2 < 0)
-          break;
-        ((uint8_t *)info_hash)[i] = (uint8_t)(eger1 * 16 + eger2);
-      }
-      printf("parsed info_hash %20s\n", info_hash);
-      if (i != sizeof(ot_hash))
+      if (!hex_tohash(info_hash, line))
         continue;
 
       /* From now on we modify g_accesslist_add and g_accesslist_delete, so prevent the
diff --git a/ot_fullscrape.c b/ot_fullscrape.c
index 3e36e8e..08970a6 100644
--- a/ot_fullscrape.c
+++ b/ot_fullscrape.c
@@ -23,6 +23,7 @@
 #include "textcode.h"
 
 /* Opentracker */
+#include "ot_hex.h"
 #include "ot_fullscrape.h"
 #include "ot_iovec.h"
 #include "ot_mutex.h"
@@ -48,18 +49,6 @@ static void fullscrape_make_zstd(int taskid, ot_tasktype mode);
 
 /* Converter function from memory to human readable hex strings
    XXX - Duplicated from ot_stats. Needs fix. */
-static char *to_hex(char *d, uint8_t *s) {
-  char *m = "0123456789ABCDEF";
-  char *t = d;
-  char *e = d + 40;
-  while (d < e) {
-    *d++ = m[*s >> 4];
-    *d++ = m[*s++ & 15];
-  }
-  *d = 0;
-  return t;
-}
-
 /* This is the entry point into this worker thread
    It grabs tasks from mutex_tasklist and delivers results back
 */
@@ -117,12 +106,12 @@ static char * fullscrape_write_one( ot_tasktype mode, char *r, ot_torrent *torre
 
     break;
   case TASK_FULLSCRAPE_TPB_ASCII:
-    to_hex(r, *hash);
+    hex_fromhash(r, *hash);
     r += 2 * sizeof(ot_hash);
     r += sprintf(r, ":%zd:%zd\n", seed_count, peer_count - seed_count);
     break;
   case TASK_FULLSCRAPE_TPB_ASCII_PLUS:
-    to_hex(r, *hash);
+    hex_fromhash(r, *hash);
     r += 2 * sizeof(ot_hash);
     r += sprintf(r, ":%zd:%zd:%zd\n", seed_count, peer_count - seed_count, down_count);
     break;
@@ -138,7 +127,7 @@ static char * fullscrape_write_one( ot_tasktype mode, char *r, ot_torrent *torre
     r += sprintf(r, ":%zd:%zd\n", seed_count, peer_count - seed_count);
     break;
   case TASK_FULLSCRAPE_TRACKERSTATE:
-    to_hex(r, *hash);
+    hex_fromhash(r, *hash);
     r += 2 * sizeof(ot_hash);
     r += sprintf(r, ":%zd:%zd\n", torrent->peer_list6->base, down_count);
     break;
diff --git a/ot_stats.c b/ot_stats.c
index afc972a..d43f29c 100644
--- a/ot_stats.c
+++ b/ot_stats.c
@@ -23,6 +23,7 @@
 
 /* Opentracker */
 #include "ot_accesslist.h"
+#include "ot_hex.h"
 #include "ot_iovec.h"
 #include "ot_mutex.h"
 #include "ot_stats.h"
@@ -295,18 +296,6 @@ static int torrent_statter(ot_torrent *torrent, uintptr_t data) {
 }
 
 /* Converter function from memory to human readable hex strings */
-static char *to_hex(char *d, uint8_t *s) {
-  char *m = "0123456789ABCDEF";
-  char *t = d;
-  char *e = d + 40;
-  while (d < e) {
-    *d++ = m[*s >> 4];
-    *d++ = m[*s++ & 15];
-  }
-  *d = 0;
-  return t;
-}
-
 typedef struct {
   size_t  val;
   ot_hash hash;
@@ -361,15 +350,15 @@ size_t stats_top_txt(char *reply, size_t amount) {
   r += sprintf(r, "Top %zd torrents by peers:\n", amount);
   for (idx = 0; idx < amount; ++idx)
     if (top100c[idx].val)
-      r += sprintf(r, "\t%zd\t%s\n", top100c[idx].val, to_hex(hex_out, top100c[idx].hash));
+      r += sprintf(r, "\t%zd\t%s\n", top100c[idx].val, hex_fromhash(hex_out, top100c[idx].hash));
   r += sprintf(r, "Top %zd torrents by seeds:\n", amount);
   for (idx = 0; idx < amount; ++idx)
     if (top100s[idx].val)
-      r += sprintf(r, "\t%zd\t%s\n", top100s[idx].val, to_hex(hex_out, top100s[idx].hash));
+      r += sprintf(r, "\t%zd\t%s\n", top100s[idx].val, hex_fromhash(hex_out, top100s[idx].hash));
   r += sprintf(r, "Top %zd torrents by leechers:\n", amount);
   for (idx = 0; idx < amount; ++idx)
     if (top100l[idx].val)
-      r += sprintf(r, "\t%zd\t%s\n", top100l[idx].val, to_hex(hex_out, top100l[idx].hash));
+      r += sprintf(r, "\t%zd\t%s\n", top100l[idx].val, hex_fromhash(hex_out, top100l[idx].hash));
 
   return r - reply;
 }
@@ -667,9 +656,9 @@ void stats_issue_event(ot_status_event event, PROTO_FLAG proto, uintptr_t event_
       localtime_r(&ttt, &time_now);
       strftime(timestring, sizeof(timestring), "%FT%T%z", &time_now);
 
-      to_hex(hash_hex, *ws->hash);
+      hex_fromhash(hash_hex, *ws->hash);
       if (ws->peer_id)
-        to_hex(peerid_hex, (uint8_t *)ws->peer_id);
+        hex_fromhash(peerid_hex, (uint8_t *)ws->peer_id);
       else {
         *peerid_hex = 0;
       }