add the 'ead' package (emergency access daemon),

which can provide remote access to your device, even if the ip
and firewall settings are broken

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13738 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 226 insertions, 0 deletions

diff --git a/package/ead/src/tinysrp/t_conv.c b/package/ead/src/tinysrp/t_conv.c
new file mode 100644
index 0000000000..d3fe246c41
--- /dev/null
+++ b/package/ead/src/tinysrp/t_conv.c
@@ -0,0 +1,226 @@
+/*
+ * Copyright (c) 1997-1999  The Stanford SRP Authentication Project
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ *
+ * IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF
+ * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * In addition, the following conditions apply:
+ *
+ * 1. Any software that incorporates the SRP authentication technology
+ *    must display the following acknowlegment:
+ *    "This product uses the 'Secure Remote Password' cryptographic
+ *     authentication system developed by Tom Wu (tjw@CS.Stanford.EDU)."
+ *
+ * 2. Any software that incorporates all or part of the SRP distribution
+ *    itself must also display the following acknowledgment:
+ *    "This product includes software developed by Tom Wu and Eugene
+ *     Jhong for the SRP Distribution (http://srp.stanford.edu/srp/)."
+ *
+ * 3. Redistributions in source or binary form must retain an intact copy
+ *    of this copyright notice and list of conditions.
+ */
+
+/*#define _POSIX_SOURCE*/
+#include <stdio.h>
+#include "t_defines.h"
+
+static int
+hexDigitToInt(c)
+     char c;
+{
+  if(c >= '0' && c <= '9')
+    return c - '0';
+  else if(c >= 'a' && c <= 'f')
+    return c - 'a' + 10;
+  else if(c >= 'A' && c <= 'F')
+    return c - 'A' + 10;
+  else
+    return 0;
+}
+
+/*
+ * Convert a hex string to a string of bytes; return size of dst
+ */
+_TYPE( int )
+t_fromhex(dst, src)
+     register char *dst, *src;
+{
+  register char *chp = dst;
+  register unsigned size = strlen(src);
+
+  /* FIXME: handle whitespace and non-hex digits by setting size and src
+     appropriately. */
+
+  if(size % 2 == 1) {
+    *chp++ = hexDigitToInt(*src++);
+    --size;
+  }
+  while(size > 0) {
+    *chp++ = (hexDigitToInt(*src) << 4) | hexDigitToInt(*(src + 1));
+    src += 2;
+    size -= 2;
+  }
+  return chp - dst;
+}
+
+/*
+ * Convert a string of bytes to their hex representation
+ */
+_TYPE( char * )
+t_tohex(dst, src, size)
+     register char *dst, *src;
+     register unsigned size;
+{
+   int notleading = 0;
+
+   register char *chp = dst;
+   if (size != 0) do {
+      if(notleading || *src != '\0') {
+	notleading = 1;
+	sprintf(chp, "%.2x", * (unsigned char *) src);
+	chp += 2;
+      }
+      ++src;
+   } while (--size != 0);
+   return dst;
+}
+
+static char b64table[] =
+  "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz./";
+
+/*
+ * Convert a base64 string into raw byte array representation.
+ */
+_TYPE( int )
+t_fromb64(dst, src)
+     register char *dst, *src;
+{
+  unsigned char *a;
+  char *loc;
+  int i, j;
+  unsigned int size;
+
+  while(*src && (*src == ' ' || *src == '\t' || *src == '\n'))
+      ++src;
+  size = strlen(src);
+
+  a = malloc((size + 1) * sizeof(unsigned char));
+  if(a == (unsigned char *) 0)
+    return -1;
+
+  i = 0;
+  while(i < size) {
+    loc = strchr(b64table, src[i]);
+    if(loc == (char *) 0)
+      break;
+    else
+      a[i] = loc - b64table;
+    ++i;
+  }
+  size = i;
+
+  i = size - 1;
+  j = size;
+  while(1) {
+    a[j] = a[i];
+    if(--i < 0)
+      break;
+    a[j] |= (a[i] & 3) << 6;
+    --j;
+    a[j] = (unsigned char) ((a[i] & 0x3c) >> 2);
+    if(--i < 0)
+      break;
+    a[j] |= (a[i] & 0xf) << 4;
+    --j;
+    a[j] = (unsigned char) ((a[i] & 0x30) >> 4);
+    if(--i < 0)
+      break;
+    a[j] |= (a[i] << 2);
+
+    a[--j] = 0;
+    if(--i < 0)
+      break;
+  }
+
+  while(a[j] == 0 && j <= size)
+    ++j;
+
+  memcpy(dst, a + j, size - j + 1);
+  free(a);
+  return size - j + 1;
+}
+
+/*
+ * Convert a raw byte string into a null-terminated base64 ASCII string.
+ */
+_TYPE( char * )
+t_tob64(dst, src, size)
+     register char *dst, *src;
+     register unsigned size;
+{
+  int c, pos = size % 3;
+  unsigned char b0 = 0, b1 = 0, b2 = 0, notleading = 0;
+  char *olddst = dst;
+
+  switch(pos) {
+  case 1:
+    b2 = src[0];
+    break;
+  case 2:
+    b1 = src[0];
+    b2 = src[1];
+    break;
+  }
+
+  while(1) {
+    c = (b0 & 0xfc) >> 2;
+    if(notleading || c != 0) {
+      *dst++ = b64table[c];
+      notleading = 1;
+    }
+    c = ((b0 & 3) << 4) | ((b1 & 0xf0) >> 4);
+    if(notleading || c != 0) {
+      *dst++ = b64table[c];
+      notleading = 1;
+    }
+    c = ((b1 & 0xf) << 2) | ((b2 & 0xc0) >> 6);
+    if(notleading || c != 0) {
+      *dst++ = b64table[c];
+      notleading = 1;
+    }
+    c = b2 & 0x3f;
+    if(notleading || c != 0) {
+      *dst++ = b64table[c];
+      notleading = 1;
+    }
+    if(pos >= size)
+      break;
+    else {
+      b0 = src[pos++];
+      b1 = src[pos++];
+      b2 = src[pos++];
+    }
+  }
+
+  *dst++ = '\0';
+  return olddst;
+}