- (djm) Clean up. Strip some unnecessary differences with OpenBSD's code,

[openssh.git] / fake-getaddrinfo.c

diff --git a/fake-getaddrinfo.c b/fake-getaddrinfo.c
index 456c41e5831231a8f7ae57b4805fdccf4e881d82..73c122ed11776cd01c3397ed4ad07b3c1aea43b6 100644 (file)
--- a/fake-getaddrinfo.c
+++ b/fake-getaddrinfo.c
@@ -7,113 +7,113 @@
  * But these functions are not implemented correctly. The minimum subset
  * is implemented for ssh use only. For exapmle, this routine assumes
  * that ai_family is AF_INET. Don't use it for another purpose.
- * 
- * In the case not using 'configure --enable-ipv6', this getaddrinfo.c
- * will be used if you have broken getaddrinfo or no getaddrinfo.
  */
 
 #include "includes.h"
 #include "ssh.h"
 
 #ifndef HAVE_GAI_STRERROR
-char *
-gai_strerror(ecode)
-int ecode;
+char *gai_strerror(int ecode)
 {
-  switch (ecode) {
-  case EAI_NODATA:
-    return "no address associated with hostname.";
-  case EAI_MEMORY:
-    return "memory allocation failure.";
-  default:
-    return "unknown error.";
-  }
+       switch (ecode) {
+               case EAI_NODATA:
+                       return "no address associated with hostname.";
+               case EAI_MEMORY:
+                       return "memory allocation failure.";
+               default:
+                       return "unknown error.";
+       }
 }    
 #endif /* !HAVE_GAI_STRERROR */
 
 #ifndef HAVE_FREEADDRINFO
-void
-freeaddrinfo(ai)
-struct addrinfo *ai;
+void freeaddrinfo(struct addrinfo *ai)
 {
-  struct addrinfo *next;
-  
-  do {
-    next = ai->ai_next;
-    free(ai);
-  } while (NULL != (ai = next));
+       struct addrinfo *next;
+
+       do {
+               next = ai->ai_next;
+               free(ai);
+       } while (NULL != (ai = next));
 }
 #endif /* !HAVE_FREEADDRINFO */
 
 #ifndef HAVE_GETADDRINFO
-static struct addrinfo *
-malloc_ai(port, addr)
-int port;
-u_long addr;
+static struct addrinfo *malloc_ai(int port, u_long addr)
 {
-  struct addrinfo *ai;
+       struct addrinfo *ai;
+
+       ai = malloc(sizeof(struct addrinfo) + sizeof(struct sockaddr_in));
+       if (ai == NULL)
+               return(NULL);
+       
+       memset(ai, 0, sizeof(struct addrinfo) + sizeof(struct sockaddr_in));
+       
+       ai->ai_addr = (struct sockaddr *)(ai + 1);
+       /* XXX -- ssh doesn't use sa_len */
+       ai->ai_addrlen = sizeof(struct sockaddr_in);
+       ai->ai_addr->sa_family = ai->ai_family = AF_INET;
 
-  if (NULL != (ai = (struct addrinfo *)malloc(sizeof(struct addrinfo) +
-                                    sizeof(struct sockaddr_in)))) {
-    memset(ai, 0, sizeof(struct addrinfo) + sizeof(struct sockaddr_in));
-    ai->ai_addr = (struct sockaddr *)(ai + 1);
-    /* XXX -- ssh doesn't use sa_len */
-    ai->ai_addrlen = sizeof(struct sockaddr_in);
-    ai->ai_addr->sa_family = ai->ai_family = AF_INET;
-    ((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port;
-    ((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr;
-    return ai;
-  } else {
-    return NULL;
-  }
+       ((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port;
+       ((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr;
+       
+       return(ai);
 }
 
-int
-getaddrinfo(hostname, servname, hints, res)
-const char *hostname, *servname;
-const struct addrinfo *hints;
-struct addrinfo **res;
+int getaddrinfo(const char *hostname, const char *servname, 
+                const struct addrinfo *hints, struct addrinfo **res)
 {
-  struct addrinfo *cur, *prev = NULL;
-  struct hostent *hp;
-  int i, port;
-  
-  if (servname)
-    port = htons(atoi(servname));
-  else
-    port = 0;
-  if (hints && hints->ai_flags & AI_PASSIVE)
-    if (NULL != (*res = malloc_ai(port, htonl(0x00000000))))
-      return 0;
-    else
-      return EAI_MEMORY;
-  if (!hostname)
-    if (NULL != (*res = malloc_ai(port, htonl(0x7f000001))))
-      return 0;
-    else
-      return EAI_MEMORY;
-  if (inet_addr(hostname) != -1)
-    if (NULL != (*res = malloc_ai(port, inet_addr(hostname))))
-      return 0;
-    else
-      return EAI_MEMORY;
-  if ((hp = gethostbyname(hostname)) &&
-      hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
-    for (i = 0; hp->h_addr_list[i]; i++)
-      if (NULL != (cur = malloc_ai(port, 
-                       ((struct in_addr *)hp->h_addr_list[i])->s_addr))) {
-       if (prev)
-         prev->ai_next = cur;
+       struct addrinfo *cur, *prev = NULL;
+       struct hostent *hp;
+       struct in_addr in;
+       int i, port;
+
+       if (servname)
+               port = htons(atoi(servname));
        else
-         *res = cur;
-       prev = cur;
-      } else {
-       if (*res)
-         freeaddrinfo(*res);
-       return EAI_MEMORY;
-      }
-    return 0;
-  }
-  return EAI_NODATA;
+               port = 0;
+
+       if (hints && hints->ai_flags & AI_PASSIVE) {
+               if (NULL != (*res = malloc_ai(port, htonl(0x00000000))))
+                       return 0;
+               else
+                       return EAI_MEMORY;
+       }
+               
+       if (!hostname) {
+               if (NULL != (*res = malloc_ai(port, htonl(0x7f000001))))
+                       return 0;
+               else
+                       return EAI_MEMORY;
+       }
+       
+       if (inet_aton(hostname, &in)) {
+               if (NULL != (*res = malloc_ai(port, in.s_addr)))
+                       return 0;
+               else
+                       return EAI_MEMORY;
+       }
+       
+       hp = gethostbyname(hostname);
+       if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
+               for (i = 0; hp->h_addr_list[i]; i++) {
+                       cur = malloc_ai(port, ((struct in_addr *)hp->h_addr_list[i])->s_addr);
+                       if (cur == NULL) {
+                               if (*res)
+                                       freeaddrinfo(*res);
+                               return EAI_MEMORY;
+                       }
+                       
+                       if (prev)
+                               prev->ai_next = cur;
+                       else
+                               *res = cur;
+
+                       prev = cur;
+               }
+               return 0;
+       }
+       
+       return EAI_NODATA;
 }
 #endif /* !HAVE_GETADDRINFO */