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December 8, 2023 09:40
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,145 @@ #include <netinet/in.h> #include <sys/types.h> #include <sys/socket.h> #include <netdb.h> #include <stdio.h> #include <arpa/inet.h> #include <errno.h> #include <string.h> #include <stdbool.h> static void flags_to_str(int flags, char *buf, size_t len) { size_t ix; const char *flag_name; if (flags == 0) { snprintf(buf, len, "0"); return; } ix = 0; while (flags) { if (flags & AI_ADDRCONFIG) { flag_name = "AI_ADDRCONFIG"; flags &= ~AI_ADDRCONFIG; } else if (flags & AI_NUMERICHOST) { flag_name = "AI_NUMERICHOST"; flags &= ~AI_NUMERICHOST; } else if (flags & AI_NUMERICSERV) { flag_name = "AI_NUMERICSERV"; flags &= ~AI_NUMERICSERV; } else { flag_name = NULL; } if (flag_name) { ix += snprintf(buf + ix, len - ix, "%s", flag_name); if (flags) { ix += snprintf(buf + ix, len - ix, " | "); } } else { snprintf(buf + ix, len - ix, "UNKNOWN_FLAGS (%d)", flags); return; } } } static void family_to_str(int family, char *buf, size_t len) { switch (family) { case AF_INET: snprintf(buf, len,"AF_INET"); break; case AF_INET6: snprintf(buf, len, "AF_INET6"); break; default: snprintf(buf, len, "Family %d", family); break; } } static void addr_to_str(struct sockaddr *sa, char *buf, size_t len) { const char *r; switch (sa->sa_family) { case AF_INET: r = inet_ntop(sa->sa_family, &(((struct sockaddr_in *)sa)->sin_addr), buf, len); if (!r) { snprintf(buf, len, "(inet_ntop error: %d (%s))", errno, strerror(errno)); } break; case AF_INET6: r = inet_ntop(sa->sa_family, &(((struct sockaddr_in6 *)sa)->sin6_addr), buf, len); if (!r) { snprintf(buf, len, "(inet_ntop error: %d (%s))", errno, strerror(errno)); } break; default: snprintf(buf, len, "(unknown family %d)", sa->sa_family); break; } } static void do_addrinfo_test(char *host, char *service, int family, int flags, bool use_hints) { int r; char addr[INET6_ADDRSTRLEN]; char family_str[64]; char flags_str[128]; struct addrinfo *res = NULL; struct addrinfo hints = { .ai_socktype = 0, .ai_protocol = 0, .ai_family = family, .ai_flags = flags, }; struct addrinfo *hints_to_pass; flags_to_str(flags, flags_str, sizeof(flags_str)); family_to_str(family, family_str, sizeof(family_str)); printf("TEST: host %s, service %s, flags %s, family %s (using hints: %d)\n", host, service, flags_str, family_str, use_hints); if (use_hints) { hints_to_pass = &hints; } else { hints_to_pass = NULL; } r = getaddrinfo(host, service, hints_to_pass, &res); if (r == 0) { struct addrinfo *node = res; while (node) { family_to_str(node->ai_family, family_str, sizeof(family_str)); addr_to_str(node->ai_addr, addr, sizeof(addr)); printf("\tRESOLVED: %s %s\n", addr, family_str); node = node->ai_next; } } else { printf("\tFAILED: err %d (%s)\n", r, gai_strerror(r)); } if (res) { freeaddrinfo(res); } } int main(int argc, char **argv) { do_addrinfo_test("localhost", "8000", AF_UNSPEC, AI_NUMERICSERV | AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_UNSPEC, AI_NUMERICSERV | AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_UNSPEC, AI_NUMERICSERV, true); do_addrinfo_test(NULL, "8000", AF_UNSPEC,AI_NUMERICSERV, true); do_addrinfo_test("localhost", NULL, AF_UNSPEC, 0, true); do_addrinfo_test("localhost", NULL, AF_UNSPEC, 0, false); do_addrinfo_test(NULL, "8000", AF_UNSPEC, 0, true); do_addrinfo_test(NULL, "8000", AF_UNSPEC, 0, false); do_addrinfo_test("localhost", "8000", AF_INET, AI_NUMERICSERV | AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_INET, AI_NUMERICSERV | AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_INET, AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_INET, AI_NUMERICSERV, true); do_addrinfo_test("localhost", "8000", AF_INET6, AI_NUMERICSERV | AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_INET6, AI_NUMERICSERV | AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_INET6, AI_ADDRCONFIG, true); do_addrinfo_test(NULL, "8000", AF_INET6, AI_NUMERICSERV, true); } This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. 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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,91 @@ TEST: host localhost, service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service (null), flags 0, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service (null), flags 0, family Family 0 (using hints: 0) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags 0, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags 0, family Family 0 (using hints: 0) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET (using hints: 1) RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET (using hints: 1) RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_ADDRCONFIG, family AF_INET (using hints: 1) RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_NUMERICSERV, family AF_INET (using hints: 1) RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET6 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 TEST: host (null), service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET6 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 TEST: host (null), service 8000, flags AI_ADDRCONFIG, family AF_INET6 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 TEST: host (null), service 8000, flags AI_NUMERICSERV, family AF_INET6 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. 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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,76 @@ TEST: host localhost, service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags AI_NUMERICSERV, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service (null), flags 0, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service (null), flags 0, family Family 0 (using hints: 0) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags 0, family Family 0 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host (null), service 8000, flags 0, family Family 0 (using hints: 0) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET (using hints: 1) FAILED: err -2 (Name or service not known) TEST: host (null), service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET (using hints: 1) FAILED: err -2 (Name or service not known) TEST: host (null), service 8000, flags AI_ADDRCONFIG, family AF_INET (using hints: 1) FAILED: err -2 (Name or service not known) TEST: host (null), service 8000, flags AI_NUMERICSERV, family AF_INET (using hints: 1) RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET RESOLVED: 127.0.0.1 AF_INET TEST: host localhost, service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET6 (using hints: 1) FAILED: err -2 (Name or service not known) TEST: host (null), service 8000, flags AI_ADDRCONFIG | AI_NUMERICSERV, family AF_INET6 (using hints: 1) FAILED: err -2 (Name or service not known) TEST: host (null), service 8000, flags AI_ADDRCONFIG, family AF_INET6 (using hints: 1) FAILED: err -2 (Name or service not known) TEST: host (null), service 8000, flags AI_NUMERICSERV, family AF_INET6 (using hints: 1) RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6 RESOLVED: ::1 AF_INET6