Changeset a64c64d in mainline for uspace/srv/net/inet.c

Timestamp:

2010-03-09T22:24:31Z (14 years ago)

Author:

Lukas Mejdrech <lukasmejdrech@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

74520daf

Parents:

9f2ea28

Message:

• code reorganization (no functional change)

File:

• uspace/srv/net/inet.c (modified) (4 diffs)

uspace/srv/net/inet.c

@@ -45 +45 @@
 #include "include/socket_codes.h"
 
+int inet_ntop(uint16_t family, const uint8_t * data, char * address, size_t length){
+        if((! data) || (! address)){
+                return EINVAL;
+        }
+
+        switch(family){
+                case AF_INET:
+                        // check the output buffer size
+                        if(length < INET_ADDRSTRLEN){
+                                return ENOMEM;
+                        }
+                        // fill the buffer with the IPv4 address
+                        snprintf(address, length, "%hhu.%hhu.%hhu.%hhu", data[0], data[1], data[2], data[3]);
+                        return EOK;
+                case AF_INET6:
+                        // check the output buffer size
+                        if(length < INET6_ADDRSTRLEN){
+                                return ENOMEM;
+                        }
+                        // fill the buffer with the IPv6 address
+                        snprintf(address, length, "%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx", data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8], data[9], data[10], data[11], data[12], data[13], data[14], data[15]);
+                        return EOK;
+                default:
+                        return ENOTSUP;
+        }
+}
+
 int inet_pton(uint16_t family, const char * address, uint8_t * data){
+        /** The base number of the values.
+         */
+        int base;
+        /** The number of bytes per a section.
+         */
+        size_t bytes;
+        /** The number of bytes of the address data.
+         */
+        int count;
+
         const char * next;
         char * last;
         int index;
-        int count;
-        int base;
-        size_t bytes;
         size_t shift;
         unsigned long value;
@@ -58 +92 @@
                 return EINVAL;
         }
+
+        // set the processing parameters
         switch(family){
                 case AF_INET:
@@ -72 +108 @@
                         return ENOTSUP;
         }
+
+        // erase if no address
         if(! address){
                 bzero(data, count);
                 return ENOENT;
         }
+
+        // process the string from the beginning
         next = address;
         index = 0;
         do{
+                // if the actual character is set
                 if(next && (*next)){
+
+                        // if not on the first character
                         if(index){
+                                // move to the next character
                                 ++ next;
                         }
+
+                        // parse the actual integral value
                         value = strtoul(next, &last, base);
+                        // remember the last problematic character
+                        // should be either '.' or ':' but is ignored to be more generic
                         next = last;
+
+                        // fill the address data byte by byte
                         shift = bytes - 1;
                         do{
@@ -91 +141 @@
                                 value >>= 8;
                         }while(shift --);
+
                         index += bytes;
                 }else{
+                        // erase the rest of the address
                         bzero(data + index, count - index);
                         return EOK;
                 }
         }while(index < count);
+
         return EOK;
-}
-
-int inet_ntop(uint16_t family, const uint8_t * data, char * address, size_t length){
-        if((! data) || (! address)){
-                return EINVAL;
-        }
-        switch(family){
-                case AF_INET:
-                        if(length < INET_ADDRSTRLEN){
-                                return ENOMEM;
-                        }
-                        snprintf(address, length, "%hhu.%hhu.%hhu.%hhu", data[0], data[1], data[2], data[3]);
-                        return EOK;
-                case AF_INET6:
-                        if(length < INET6_ADDRSTRLEN){
-                                return ENOMEM;
-                        }
-                        snprintf(address, length, "%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx:%hhx%hhx", data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8], data[9], data[10], data[11], data[12], data[13], data[14], data[15]);
-                        return EOK;
-                default:
-                        return ENOTSUP;
-        }
 }