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*** getaddrinfo.c.orig Mon Jan 10 22:56:13 2000
--- getaddrinfo.c Mon Jan 10 22:56:13 2000
***************
*** 0 ****
--- 1,115 ----
+ /*
+ * fake library for ssh
+ *
+ * This file includes getaddrinfo(), freeaddrinfo() and gai_strerror().
+ * These funtions are defined in rfc2133.
+ *
+ * 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"
+
+ #include "gai.h"
+
+ static struct addrinfo *
+ malloc_ai(port, addr)
+ int port;
+ u_long addr;
+ {
+ struct addrinfo *ai;
+
+ if (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;
+ }
+ }
+
+ char *
+ gai_strerror(ecode)
+ int ecode;
+ {
+ switch (ecode) {
+ case EAI_NODATA:
+ return "no address associated with hostname.";
+ case EAI_MEMORY:
+ return "memory allocation failure.";
+ default:
+ return "unknown error.";
+ }
+ }
+
+ void
+ freeaddrinfo(ai)
+ struct addrinfo *ai;
+ {
+ struct addrinfo *next;
+
+ do {
+ next = ai->ai_next;
+ free(ai);
+ } while (ai = next);
+ }
+
+ int
+ getaddrinfo(hostname, servname, hints, res)
+ const char *hostname, *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 (*res = malloc_ai(port, htonl(0x00000000)))
+ return 0;
+ else
+ return EAI_MEMORY;
+ if (!hostname)
+ if (*res = malloc_ai(port, htonl(0x7f000001)))
+ return 0;
+ else
+ return EAI_MEMORY;
+ if (inet_addr(hostname) != -1)
+ if (*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 (cur = malloc_ai(port,
+ ((struct in_addr *)hp->h_addr_list[i])->s_addr)) {
+ if (prev)
+ prev->ai_next = cur;
+ else
+ *res = cur;
+ prev = cur;
+ } else {
+ if (*res)
+ freeaddrinfo(*res);
+ return EAI_MEMORY;
+ }
+ return 0;
+ }
+ return EAI_NODATA;
+ }
|
