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-rw-r--r--LICENSE37
-rw-r--r--csci4211/ipaddress.c62
2 files changed, 82 insertions, 17 deletions
diff --git a/LICENSE b/LICENSE
index c49ef5f..00d2e13 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,21 +1,24 @@
-MIT License
+This is free and unencumbered software released into the public domain.
-Copyright (c) 2018-2021 Matt Strapp
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
-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:
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
-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", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+For more information, please refer to <http://unlicense.org/> \ No newline at end of file
diff --git a/csci4211/ipaddress.c b/csci4211/ipaddress.c
new file mode 100644
index 0000000..662bf99
--- /dev/null
+++ b/csci4211/ipaddress.c
@@ -0,0 +1,62 @@
+// Author Name: Matt Strapp
+// Date: 2022-01-26
+// x500: strap012
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int IPv4ToInt(char *ipv4, int isBigEndian) {
+ unsigned int ipv4Int = 0;
+ short int i = 0;
+ char *chunk = strtok(ipv4, ".");
+ while (chunk != NULL) {
+ int ipv4Segment = atoi(chunk);
+ if (ipv4Segment > 255 || ipv4Segment < 0) {
+ printf("ERROR\n");
+ exit(0);
+ }
+ ipv4Int = (isBigEndian) ? (ipv4Int << 8) | ipv4Segment
+ : (ipv4Int >> 8) + (ipv4Segment << 24);
+ i++;
+ chunk = strtok(NULL, ".");
+ }
+ if (i != 4) {
+ printf("ERROR\n");
+ exit(0);
+ }
+ return ipv4Int;
+}
+
+char *IntToIPv4(long ipv4_int, int isBigEndian) {
+ if (ipv4_int > 4294967295 || ipv4_int < 0) {
+ printf("ERROR\n");
+ exit(0);
+ }
+ char *ipv4 = (char *)calloc(16, sizeof(char));
+ int i = 0;
+ while (i < 4) {
+ int ipv4Segment = (isBigEndian) ? (ipv4_int >> (8 * (3 - i))) & 255
+ : (ipv4_int >> (8 * i)) & 255;
+ sprintf(ipv4 + strlen(ipv4), "%d", ipv4Segment);
+ if (i != 3)
+ sprintf(ipv4 + strlen(ipv4), ".");
+ i++;
+ }
+ return ipv4;
+}
+
+int main(int argc, char **argv) {
+ int toHuman = atoi(argv[1]);
+ int isBigEndian = atoi(argv[3]);
+ if (toHuman) {
+ long toIpv4 = strtol(argv[2], NULL, 10);
+ char *ret = IntToIPv4(toIpv4, isBigEndian);
+ printf("%s\n", ret);
+ free(ret);
+ } else {
+ unsigned int ret = IPv4ToInt(argv[2], isBigEndian);
+ printf("%u\n", ret);
+ return 0;
+ }
+} \ No newline at end of file