Changeset 4877:f204efc45b07 in roaraudio

Timestamp:

04/26/11 14:04:57 (12 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added roar_ht_digest2str()

Files:

• include/libroar/hash.h (modified) (1 diff)
• libroar/hash.c (modified) (1 diff)

include/libroar/hash.h

@@ -93 +93 @@
 ssize_t      roar_ht_digestlen (const int    ht);
 
+ssize_t      roar_ht_digest2str(char * out, size_t outlen, void * digest, size_t digestlen, int ht);
+
 int          roar_ht_is_supported(const int    ht);
 

libroar/hash.c

@@ -172 +172 @@
 }
 
+static void _bin2hex(char * out, char * in, size_t inlen, int uppercase) {
+ const char * tab = uppercase ? "0123456789ABCDEF" : "0123456789abcdef";
+ unsigned char c;
+ int nib0, nib1;
+
+ for (; inlen; inlen--) {
+  c = *(in++);
+  nib0 = (c & 0x0F) >> 0;
+  nib1 = (c & 0xF0) >> 4;
+//  printf("inlen=%zu, c=%u, nibs={%i, %i}\n", inlen, (unsigned)c, nib1, nib0);
+  *(out++) = tab[nib1];
+  *(out++) = tab[nib0];
+ }
+ *out = 0;
+}
+
+ssize_t      roar_ht_digest2str(char * out, size_t outlen, void * digest, size_t digestlen, int ht) {
+ ssize_t slen = roar_ht_digestlen(ht);
+ union {
+  long long int llsi;
+ } tmp;
+ enum {
+  HEX,
+  TIGER,
+//  BASE64,
+  UUID,
+  INT,
+  GTIN
+ } type = HEX;
+
+ if ( out == NULL || digest == NULL ) {
+  roar_err_set(ROAR_ERROR_FAULT);
+  return -1;
+ }
+
+ if ( !(slen == -1 || digestlen == slen) ) {
+  roar_err_set(ROAR_ERROR_INVAL);
+  return -1;
+ }
+
+ switch (ht) {
+  case ROAR_HT_TIGER: type = TIGER; break;
+  case ROAR_HT_UUID:  type = UUID;  break;
+  case ROAR_HT_CLIENTID:
+  case ROAR_HT_STREAMID:
+  case ROAR_HT_SOURCEID:
+  case ROAR_HT_SAMPLEID:
+  case ROAR_HT_MIXERID:
+  case ROAR_HT_BRIDGEID:
+  case ROAR_HT_LISTENID:
+  case ROAR_HT_ACTIONID:
+  case ROAR_HT_MSGQUEUEID:
+  case ROAR_HT_MSGBUSID:
+    type = INT;
+   break;
+  case ROAR_HT_GTIN8:
+  case ROAR_HT_GTIN13:
+  case ROAR_HT_ISBN10:
+    type = GTIN;
+   break;
+ }
+
+ switch (type) {
+  case HEX:
+    if ( outlen < (digestlen*2 + 1) ) {
+     roar_err_set(ROAR_ERROR_FAULT);
+     return -1;
+    }
+    _bin2hex(out, digest, digestlen, 0);
+   break;
+  case UUID:
+    if ( outlen < 37 || digestlen != 16 ) {
+     roar_err_set(ROAR_ERROR_FAULT);
+     return -1;
+    }
+    _bin2hex(out+ 0, digest+ 0, 4, 0);
+    out[ 8] = '-';
+    _bin2hex(out+ 9, digest+ 4, 2, 0);
+    out[13] = '-';
+    _bin2hex(out+14, digest+ 6, 2, 0);
+    out[18] = '-';
+    _bin2hex(out+19, digest+ 8, 2, 0);
+    out[23] = '-';
+    _bin2hex(out+24, digest+10, 6, 0);
+//    printf("%s\n", out+24);
+   break;
+  case TIGER:
+    if ( outlen < 51 || digestlen != 24 ) {
+     roar_err_set(ROAR_ERROR_FAULT);
+     return -1;
+    }
+    _bin2hex(out+ 0, digest+ 0, 8, 1);
+    out[16] = ' ';
+    _bin2hex(out+17, digest+ 8, 8, 1);
+    out[33] = ' ';
+    _bin2hex(out+34, digest+16, 8, 1);
+   break;
+  case INT:
+    switch (digestlen) {
+     case 1:
+       tmp.llsi = *(char*)digest;
+      break;
+     case 2:
+       tmp.llsi = ROAR_NET2HOST16(*(int16_t*)digest);
+      break;
+     case 4:
+       tmp.llsi = ROAR_NET2HOST32(*(int32_t*)digest);
+      break;
+     default:
+       roar_err_set(ROAR_ERROR_NOSYS);
+       return -1;
+      break;
+    }
+    snprintf(out, outlen-1, "%lli", tmp.llsi);
+   break;
+  default:
+    roar_err_set(ROAR_ERROR_NOSYS);
+    return -1;
+ }
+
+ out[outlen-1] = 0;
+ return strlen(out);
+}
+
 int          roar_ht_is_supported(const int    ht) {
  roar_crypto_init();