// nonetwork, break standard network functions using LD_PRELOAD // Source: https://github.com/starius/nonetwork // Copyright (C) 2015 Boris Nagaev // License: MIT #include int connect(int sock, const void *addr, unsigned int len) { errno = 13; // EACCES, Permission denied return -1; } void *gethostbyname(const char *name) { return 0; } int getaddrinfo(const char *node, const char *service, const void *hints, void **res) { return -4; // EAI_FAIL } void freeaddrinfo(void *res) { } int getnameinfo(const void * sa, unsigned int salen, char * host, unsigned int hostlen, char * serv, unsigned int servlen, int flags) { return -4; // EAI_FAIL } struct hostent *gethostbyaddr(const void *addr, unsigned int len, int type) { return 0; }