- added raw addr / hostname lookup support

 - added getaddrinfo, freeaddrinfo, getnameinfo and gai_strerror stub
 - added tests for getaddrinfo and getnameinfo
 - consolidated test_gethostbyname and test_sockets_gethostbyname

1 files changed, 101 insertions, 0 deletions

diff --git a/tests/sockets/test_getnameinfo.c b/tests/sockets/test_getnameinfo.c
new file mode 100644
index 00000000..c3fec6b4
--- /dev/null
+++ b/tests/sockets/test_getnameinfo.c
@@ -0,0 +1,101 @@
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <assert.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if EMSCRIPTEN
+#include <emscripten.h>
+#endif
+
+int main() {
+  struct addrinfo hints;
+  struct addrinfo *servinfo;
+  struct sockaddr_in sa4;
+  struct sockaddr_in6 sa6;
+  char node[256];
+  char serv[256];
+  int flags;
+  int err;
+
+#ifndef __APPLE__
+  // incorrect sockaddr size
+  memset(&sa4, 0, sizeof(sa4));
+  sa4.sin_family = AF_INET;
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4)-1, NULL, 0, NULL, 0, 0);
+  assert(err == EAI_FAMILY);
+
+  memset(&sa6, 0, sizeof(sa6));
+  sa6.sin6_family = AF_INET6;
+  err = getnameinfo((struct sockaddr*)&sa6, sizeof(sa6)-1, NULL, 0, NULL, 0, 0);
+  assert(err == EAI_FAMILY);
+
+  // invalid family
+  memset(&sa4, 0, sizeof(sa4));
+  sa4.sin_family = 9999;
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4), NULL, 0, NULL, 0, 0);
+  assert(err == EAI_FAMILY);
+#endif
+
+  // NI_NUMERICHOST and NI_NAMEREQD conflict
+  memset(&sa4, 0, sizeof(sa4));
+  sa4.sin_family = AF_INET;
+  flags = NI_NUMERICHOST | NI_NAMEREQD;
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4), node, sizeof(node), serv, sizeof(serv), flags);
+  assert(err == EAI_NONAME);
+
+  // too small of buffer
+  memset(&sa4, 0, sizeof(sa4));
+  sa4.sin_family = AF_INET;
+  *(uint32_t*)&sa4.sin_addr = 67305985;
+  sa4.sin_port = htons(54321);
+  flags = NI_NUMERICHOST;
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4), node, 1, serv, sizeof(serv), flags);
+  assert(err == EAI_OVERFLOW);
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4), node, sizeof(node), serv, 1, flags);
+  assert(err == EAI_OVERFLOW);
+
+  // NI_NAMEREQD and lookup failed
+  memset(&sa4, 0, sizeof(sa4));
+  sa4.sin_family = AF_INET;
+  *(uint32_t*)&sa4.sin_addr = 67305985;
+  flags = NI_NAMEREQD;
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4), node, sizeof(node), serv, sizeof(serv), flags);
+  assert(err == EAI_NONAME);
+
+  // lookup failed
+  memset(&sa4, 0, sizeof(sa4));
+  sa4.sin_family = AF_INET;
+  *(uint32_t*)&sa4.sin_addr = 67305985;
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4), node, sizeof(node), serv, sizeof(serv), flags);
+  assert(err == EAI_NONAME);
+
+  // no lookup
+  memset(&sa4, 0, sizeof(sa4));
+  sa4.sin_family = AF_INET;
+  *(uint32_t*)&sa4.sin_addr = 67305985;
+  sa4.sin_port = htons(54321);
+  flags = NI_NUMERICHOST;
+  err = getnameinfo((struct sockaddr*)&sa4, sizeof(sa4), node, sizeof(node), serv, sizeof(serv), flags);
+  assert(!err);
+  assert(!strcmp(node, "1.2.3.4"));
+  assert(!strcmp(serv, "54321"));
+
+  // lookup
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = AF_INET;
+  hints.ai_socktype = SOCK_STREAM;
+  err = getaddrinfo("www.mozilla.org", "54321", &hints, &servinfo);
+  assert(!err);
+  flags = NI_NAMEREQD;
+  err = getnameinfo(servinfo->ai_addr, servinfo->ai_addrlen, node, sizeof(node), serv, sizeof(serv), flags);
+  assert(!err);
+  assert(strstr(node, "mozilla"));
+  assert(!strcmp(serv, "54321"));
+
+  puts("success");
+
+  return EXIT_SUCCESS;
+}
\ No newline at end of file