Shorten README.md examples / share/isinetaddr/examples/*.c
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183
README.md
183
README.md
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@ -2,7 +2,7 @@
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isinetaddr is a simple C library that provides an interface that can
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be used to validate an IPv(<b>4</b>|<b>6</b>) address (with optional
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support for CIDR notation as well). The library is guided by easy to
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support for CIDR notation included). The library is guided by easy to
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extend [testcases](test/) that help verify safety and correctness.
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## Examples
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@ -18,45 +18,47 @@ when the input given is a valid IPv4 address, and otherwise returns 0.
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#include <stdio.h>
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#include <stdlib.h>
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const char *strings[] = {
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/* valid */
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"127.0.0.1",
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"1.1.1.1",
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"0.0.0.0",
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const char *valid[] = { "127.0.0.1", "1.1.1.1", "0.0.0.0" };
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const char *invalid[] = { "foobar", "0.0.0.0.0", NULL };
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/* invalid */
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"foobar",
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"0.0.0.0.0"
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};
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void
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validate(const char *str)
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{
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if (isinetaddr4(str)) {
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printf("%s is a valid IPv4 address.\n", str);
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} else {
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printf("%s is an invalid IPv4 address.\n", str);
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}
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}
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int
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main(void)
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{
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const char *str;
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const int i = sizeof(strings) / sizeof(strings[0]);
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for (int j = 0; j < i; j++) {
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str = strings[j];
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if (isinetaddr4(str)) {
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printf("%s is a valid IPv4 address\n", str);
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} else {
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printf("%s is an invalid IPv4 address\n", str);
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}
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}
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return EXIT_SUCCESS;
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printf("// valid\n");
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for (int i = 0; i < 3; i++) {
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validate(valid[i]);
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}
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printf("// invalid\n");
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for (int i = 0; i < 3; i++) {
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validate(invalid[i]);
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}
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return EXIT_SUCCESS;
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}
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```
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When the above source code is compiled and run the output is
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expected to be as follows:
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Expected output:
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```
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$ cc -Iinclude src/*.c share/isinetaddr/examples/isinetaddr4.c -o example
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$ ./example
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127.0.0.1 is a valid IPv4 address
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1.1.1.1 is a valid IPv4 address
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0.0.0.0 is a valid IPv4 address
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foobar is an invalid IPv4 address
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0.0.0.0.0 is an invalid IPv4 address
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// valid
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127.0.0.1 is a valid IPv4 address.
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1.1.1.1 is a valid IPv4 address.
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0.0.0.0 is a valid IPv4 address.
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// invalid
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foobar is an invalid IPv4 address.
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0.0.0.0.0 is an invalid IPv4 address.
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(null) is an invalid IPv4 address.
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```
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### CIDR notation (IPv4)
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@ -71,55 +73,47 @@ The following example builds on the previous example:
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#include <stdio.h>
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#include <stdlib.h>
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const char *strings[] = {
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/* valid */
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"127.0.0.1",
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"1.1.1.1",
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"0.0.0.0",
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"127.0.0.1/8",
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"127.0.0.1/16",
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"127.0.0.1/32",
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const char *valid[] = { "127.0.0.1", "192.168.2.1/32", "192.168.2.1/0" };
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const char *invalid[] = { "foobar", "0.0.0.0.0", "192.168.2.1/33" };
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/* invalid */
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"foobar",
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"0.0.0.0.0",
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"127.0.0.1/33",
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"127.0.0.1/64"
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};
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void
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validate(const char *str)
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{
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if (iscidraddr4(str)) {
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printf("%s is a valid IPv4 address.\n", str);
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} else {
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printf("%s is an invalid IPv4 address.\n", str);
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}
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}
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int
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main(void)
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{
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const char *str;
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const int i = sizeof(strings) / sizeof(strings[0]);
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for (int j = 0; j < i; j++) {
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str = strings[j];
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if (iscidraddr4(str)) {
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printf("%s is a valid IPv4 address\n", str);
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} else {
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printf("%s is an invalid IPv4 address\n", str);
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}
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}
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return EXIT_SUCCESS;
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printf("// valid\n");
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for (int i = 0; i < 3; i++) {
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validate(valid[i]);
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}
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printf("// invalid\n");
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for (int i = 0; i < 3; i++) {
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validate(invalid[i]);
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}
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return EXIT_SUCCESS;
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}
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```
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When the above source code is compiled and run the output is
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expected to be as follows:
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Expected output:
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```
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$ cc -Iinclude src/*.c share/isinetaddr/examples/iscidraddr4.c -o example
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$ ./example
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127.0.0.1 is a valid IPv4 address
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1.1.1.1 is a valid IPv4 address
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0.0.0.0 is a valid IPv4 address
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127.0.0.1/8 is a valid IPv4 address
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127.0.0.1/16 is a valid IPv4 address
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127.0.0.1/32 is a valid IPv4 address
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foobar is an invalid IPv4 address
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0.0.0.0.0 is an invalid IPv4 address
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127.0.0.1/33 is an invalid IPv4 address
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127.0.0.1/64 is an invalid IPv4 address
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// valid
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127.0.0.1 is a valid IPv4 address.
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192.168.2.1/32 is a valid IPv4 address.
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192.168.2.1/0 is a valid IPv4 address.
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// invalid
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foobar is an invalid IPv4 address.
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0.0.0.0.0 is an invalid IPv4 address.
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192.168.2.1/33 is an invalid IPv4 address.
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```
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### IPv6
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@ -133,48 +127,47 @@ when the input given is a valid IPv6 address, and otherwise returns 0.
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#include <stdio.h>
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#include <stdlib.h>
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const char *strings[] = {
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/* valid */
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"::",
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"::1",
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"0000:0000:0000:0000:0000:0000:0000:0000",
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const char *valid[] = { "::", "::1", "0000:0000:0000:0000:0000:0000:0000:0000" };
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const char *invalid[] = { "foobar", "00:::0", NULL };
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/* invalid */
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"foobar",
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NULL,
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"00:::0",
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};
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void
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validate(const char *str)
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{
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if (isinetaddr6(str)) {
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printf("%s is a valid IPv6 address.\n", str);
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} else {
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printf("%s is an invalid IPv6 address.\n", str);
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}
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}
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int
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main(void)
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{
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const char *str;
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const int i = sizeof(strings) / sizeof(strings[0]);
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for (int j = 0; j < i; j++) {
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str = strings[j];
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if (isinetaddr6(str)) {
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printf("%s is a valid IPv6 address\n", str);
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} else {
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printf("%s is an invalid IPv6 address\n", str);
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}
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}
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return EXIT_SUCCESS;
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printf("// valid\n");
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for (int i = 0; i < 3; i++) {
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validate(valid[i]);
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}
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printf("// invalid\n");
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for (int i = 0; i < 3; i++) {
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validate(invalid[i]);
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}
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return EXIT_SUCCESS;
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}
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```
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When the above source code is compiled and run the output is
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expected to be as follows:
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Expected output:
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```
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$ cc -Iinclude src/*.c share/isinetaddr/examples/isinetaddr6.c -o example
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$ ./example
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0x1eef [isinetaddr] % ./example
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:: is a valid IPv6 address
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::1 is a valid IPv6 address
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0000:0000:0000:0000:0000:0000:0000:0000 is a valid IPv6 address
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foobar is an invalid IPv6 address
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(null) is an invalid IPv6 address
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00:::0 is an invalid IPv6 address
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// valid
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:: is a valid IPv6 address.
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::1 is a valid IPv6 address.
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0000:0000:0000:0000:0000:0000:0000:0000 is a valid IPv6 address.
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// invalid
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foobar is an invalid IPv6 address.
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00:::0 is an invalid IPv6 address.
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(null) is an invalid IPv6 address.
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```
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## Sources
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@ -2,33 +2,29 @@
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#include <stdio.h>
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#include <stdlib.h>
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const char *strings[] = {
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/* valid */
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"127.0.0.1",
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"1.1.1.1",
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"0.0.0.0",
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"127.0.0.1/8",
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"127.0.0.1/16",
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"127.0.0.1/32",
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const char *valid[] = { "127.0.0.1", "192.168.2.1/32", "192.168.2.1/0" };
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const char *invalid[] = { "foobar", "0.0.0.0.0", "192.168.2.1/33" };
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/* invalid */
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"foobar",
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"0.0.0.0.0",
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"127.0.0.1/33",
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};
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void
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validate(const char *str)
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{
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if (iscidraddr4(str)) {
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printf("%s is a valid IPv4 address.\n", str);
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} else {
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printf("%s is an invalid IPv4 address.\n", str);
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}
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}
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int
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main(void)
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{
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const char *str;
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const int i = sizeof(strings) / sizeof(strings[0]);
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for (int j = 0; j < i; j++) {
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str = strings[j];
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if (iscidraddr4(str)) {
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printf("%s is a valid IPv4 address\n", str);
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} else {
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printf("%s is an invalid IPv4 address\n", str);
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}
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}
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return EXIT_SUCCESS;
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printf("// valid\n");
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for (int i = 0; i < 3; i++) {
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validate(valid[i]);
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}
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printf("// invalid\n");
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for (int i = 0; i < 3; i++) {
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validate(invalid[i]);
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}
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return EXIT_SUCCESS;
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}
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@ -2,29 +2,29 @@
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#include <stdio.h>
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#include <stdlib.h>
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const char *strings[] = {
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/* valid */
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"127.0.0.1",
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"1.1.1.1",
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"0.0.0.0",
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const char *valid[] = { "127.0.0.1", "1.1.1.1", "0.0.0.0" };
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const char *invalid[] = { "foobar", "0.0.0.0.0", NULL };
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/* invalid */
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"foobar",
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"0.0.0.0.0"
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};
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void
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validate(const char *str)
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{
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if (isinetaddr4(str)) {
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printf("%s is a valid IPv4 address.\n", str);
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} else {
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printf("%s is an invalid IPv4 address.\n", str);
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}
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}
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int
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main(void)
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{
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const char *str;
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const int i = sizeof(strings) / sizeof(strings[0]);
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for (int j = 0; j < i; j++) {
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str = strings[j];
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if (isinetaddr4(str)) {
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printf("%s is a valid IPv4 address\n", str);
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} else {
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printf("%s is an invalid IPv4 address\n", str);
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}
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}
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return EXIT_SUCCESS;
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printf("// valid\n");
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for (int i = 0; i < 3; i++) {
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validate(valid[i]);
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}
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printf("// invalid\n");
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for (int i = 0; i < 3; i++) {
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validate(invalid[i]);
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}
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return EXIT_SUCCESS;
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}
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#include <stdio.h>
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#include <stdlib.h>
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const char *strings[] = {
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/* valid */
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"::",
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"::1",
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"0000:0000:0000:0000:0000:0000:0000:0000",
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const char *valid[] = { "::", "::1", "0000:0000:0000:0000:0000:0000:0000:0000" };
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const char *invalid[] = { "foobar", "00:::0", NULL };
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/* invalid */
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"foobar",
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NULL,
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"00:::0",
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};
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void
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validate(const char *str)
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{
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if (isinetaddr6(str)) {
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printf("%s is a valid IPv6 address.\n", str);
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} else {
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printf("%s is an invalid IPv6 address.\n", str);
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}
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}
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int
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main(void)
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{
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const char *str;
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const int i = sizeof(strings) / sizeof(strings[0]);
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for (int j = 0; j < i; j++) {
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str = strings[j];
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if (isinetaddr6(str)) {
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printf("%s is a valid IPv6 address\n", str);
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} else {
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printf("%s is an invalid IPv6 address\n", str);
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}
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}
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return EXIT_SUCCESS;
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printf("// valid\n");
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for (int i = 0; i < 3; i++) {
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validate(valid[i]);
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}
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printf("// invalid\n");
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for (int i = 0; i < 3; i++) {
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validate(invalid[i]);
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}
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return EXIT_SUCCESS;
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}
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