e70152e44cc66cc599ff6b699eb8adc07f3e656a
kent
  Sat May 24 21:09:34 2014 -0700
Adding Copyright NNNN Regents of the University of California to all files I believe with reasonable certainty were developed under UCSC employ or as part of Genome Browser copyright assignment.
diff --git src/lib/internet.c src/lib/internet.c
index e753510..6a4c673 100644
--- src/lib/internet.c
+++ src/lib/internet.c
@@ -1,159 +1,162 @@
 /* internet - some stuff to make it easier to use
  * internet sockets and the like. */
+
+/* Copyright (C) 2011 The Regents of the University of California 
+ * See README in this or parent directory for licensing information. */
 #include "common.h"
 #include "internet.h"
 
 
 boolean internetIsDottedQuad(char *s)
 /* Returns TRUE if it looks like s is a dotted quad. */
 {
 int i;
 if (!isdigit(s[0]))
     return FALSE;
 for (i=0; i<3; ++i)
     {
     s = strchr(s, '.');
     if (s == NULL)
         return FALSE;
     s += 1;
     if (!isdigit(s[0]))
         return FALSE;
     }
 return TRUE;
 }
 
 bits32 internetHostIp(char *hostName)
 /* Get IP v4 address (in host byte order) for hostName.
  * Warn and return 0 if there's a problem. */
 {
 bits32 ret;
 if (internetIsDottedQuad(hostName))
     {
     internetDottedQuadToIp(hostName, &ret);
     }
 else
     {
     /* getaddrinfo is thread-safe and widely supported */
     struct addrinfo hints, *res;
     struct in_addr addr;
     int err;
 
     zeroBytes(&hints, sizeof(hints));
     hints.ai_family = AF_INET;
 
     if ((err = getaddrinfo(hostName, NULL, &hints, &res)) != 0) 
 	{
 	warn("getaddrinfo() error on hostName=%s: %s\n", hostName, gai_strerror(err));
 	return 0;
 	}
 
     addr = ((struct sockaddr_in *)(res->ai_addr))->sin_addr;
 
     ret = ntohl((uint32_t)addr.s_addr);
 
     freeaddrinfo(res);
 
     }
 return ret;
 }
 
 boolean internetFillInAddress(char *hostName, int port, struct sockaddr_in *address)
 /* Fill in address. Return FALSE if can't.  */
 {
 ZeroVar(address);
 address->sin_family = AF_INET;
 address->sin_port = htons(port);
 if (hostName == NULL)
     address->sin_addr.s_addr = INADDR_ANY;
 else
     {
     if ((address->sin_addr.s_addr = htonl(internetHostIp(hostName))) == 0)
 	return FALSE;
     }
 return TRUE;
 }
 
 boolean internetIpToDottedQuad(bits32 ip, char dottedQuad[17])
 /* Convert IP4 address in host byte order to dotted quad 
  * notation.  Warn and return FALSE if there's a 
  * problem. */
 {
 #ifndef __CYGWIN32__
 struct in_addr ia;
 zeroBytes(dottedQuad, 17);
 ZeroVar(&ia);
 ia.s_addr = htonl(ip);
 if (inet_ntop(AF_INET, &ia, dottedQuad, 16) == NULL)
     {
     warn("conversion problem on 0x%x in internetIpToDottedQuad: %s", 
     	ip, strerror(errno));
     return FALSE;
     }
 return TRUE;
 #else
 warn("Sorry, internetIpToDottedQuad not supported in Windows.");
 return FALSE;
 #endif
 }
 
 boolean internetDottedQuadToIp(char *dottedQuad, bits32 *retIp)
 /* Convert dotted quad format address to IP4 address in
  * host byte order.  Warn and return FALSE if there's a 
  * problem. */
 {
 #ifndef __CYGWIN32__
 struct in_addr ia;
 if (inet_pton(AF_INET, dottedQuad, &ia) < 0)
     {
     warn("internetDottedQuadToIp problem on %s: %s", dottedQuad, strerror(errno));
     return FALSE;
     }
 *retIp = ntohl(ia.s_addr);
 return TRUE;
 #else
 warn("Sorry, internetDottedQuadToIp not supported in Windows.");
 return FALSE;
 #endif
 }
 
 void internetParseDottedQuad(char *dottedQuad, unsigned char quad[4])
 /* Parse dotted quads into quad */
 {
 char *s = dottedQuad;
 int i;
 if (!internetIsDottedQuad(s))
     errAbort("%s is not a dotted quad", s);
 for (i=0; i<4; ++i)
     {
     quad[i] = atoi(s);
     s = strchr(s, '.') + 1;
     }
 }
 
 void internetUnpackIp(bits32 packed, unsigned char unpacked[4])
 /* Convert from 32 bit to 4-byte format with most significant
  * byte first. */
 {
 int i;
 for (i=3; i>=0; --i)
     {
     unpacked[i] = (packed&0xff);
     packed >>= 8;
     }
 }
 
 boolean internetIpInSubnet(unsigned char unpackedIp[4], unsigned char subnet[4])
 /* Return true if unpacked IP address is in subnet. */
 {
 int i;
 for (i=0; i<4; ++i)
     {
     unsigned char c = subnet[i];
     if (c == 255)
         return TRUE;
     if (c != unpackedIp[i])
         return FALSE;
     }
 return TRUE;
 }