## About isinetaddr is a simple C library that provides an interface that can be used to validate one or more IPv4 addresses. The library is guided by easy to extend [testcases](test/isinetaddr_test.c) that help verify safety and correctness. ## Examples ### IPv4 The following example demonstrates the `isinetaddr` function with both valid and invalid inputs. The `isinetaddr` function returns 1 when the input given is valid, and otherwise returns 0. ```C #include #include #include const char *strings[] = { "127.0.0.1", "1.1.1.1", "0.0.0.0", "foobar", "0.0.0.0.0" }; int main(void) { const char *str; const int i = sizeof(strings) / sizeof(strings[0]); for (int j = 0; j < i; j++) { str = strings[j]; if (isinetaddr(str)) { printf("%s is a valid IPv4 address\n", str); } else { printf("%s is an invalid IPv4 address\n", str); } } return EXIT_SUCCESS; } ``` When the above source code is compiled and run the output is expected to be as follows: ``` $ cc -Iinclude src/isinetaddr.c share/isinetaddr/examples/IPv4.c -o example $ ./example 127.0.0.1 is a valid IPv4 address 1.1.1.1 is a valid IPv4 address 0.0.0.0 is a valid IPv4 address foobar is an invalid IPv4 address 0.0.0.0.0 is an invalid IPv4 address ``` ## Sources * [Source code (GitHub)](https://github.com/0x1eef/isinetaddr#readme) * [Source code (GitLab)](https://gitlab.com/0x1eef/isinetaddr#about) ## License [BSD Zero Clause](https://choosealicense.com/licenses/0bsd/).
See [LICENSE](./LICENSE).