- Cleanup of auth.c, login.c and fake-*

 - Cleanup of auth-pam.c, save and print "account expired" error messages

8 files changed, 274 insertions, 246 deletions

diff --git a/ChangeLog b/ChangeLog
index 0fb51014f..2899a4c4c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+20000531
+ - Cleanup of auth.c, login.c and fake-*
+ - Cleanup of auth-pam.c, save and print "account expired" error messages
+
 20000530
  - Define atexit for old Solaris
  - Fix buffer overrun in login.c for systems which use syslen in utmpx.
diff --git a/auth-pam.c b/auth-pam.c
index e3f4c4252..174d289f3 100644
--- a/auth-pam.c
+++ b/auth-pam.c
@@ -13,12 +13,16 @@
 #include "xmalloc.h"
 #include "servconf.h"
 
-RCSID("$Id: auth-pam.c,v 1.4 2000/04/29 14:47:29 damien Exp $");
+RCSID("$Id: auth-pam.c,v 1.5 2000/05/31 01:20:12 damien Exp $");
+
+#define NEW_AUTHTOK_MSG \
+        "Warning: You password has expired, please change it now"
 
 /* Callbacks */
 static int pamconv(int num_msg, const struct pam_message **msg,
           struct pam_response **resp, void *appdata_ptr);
 void pam_cleanup_proc(void *context);
+void pam_msg_cat(const char *msg);
 
 /* module-local variables */
 static struct pam_conv conv = {
@@ -27,7 +31,7 @@ static struct pam_conv conv = {
 };
 static struct pam_handle_t *pamh = NULL;
 static const char *pampasswd = NULL;
-static char *pamconv_msg = NULL;
+static char *pam_msg = NULL;
 
 /* PAM conversation function. This is really a kludge to get the password */
 /* into PAM and to pick up any messages generated by PAM into pamconv_msg */
@@ -36,8 +40,6 @@ static int pamconv(int num_msg, const struct pam_message **msg,
 {
         struct pam_response *reply;
         int count;
-        size_t msg_len;
-        char *p;
 
         /* PAM will free this later */
         reply = malloc(num_msg * sizeof(*reply));
@@ -54,31 +56,14 @@ static int pamconv(int num_msg, const struct pam_message **msg,
                                 reply[count].resp_retcode = PAM_SUCCESS;
                                 reply[count].resp = xstrdup(pampasswd);
                                 break;
-
                         case PAM_TEXT_INFO:
                                 reply[count].resp_retcode = PAM_SUCCESS;
                                 reply[count].resp = xstrdup("");
 
-                                if (msg[count]->msg == NULL)
-                                        break;
+                                if (msg[count]->msg != NULL)
+                                        pam_msg_cat(msg[count]->msg);
 
-                                debug("Adding PAM message: %s", msg[count]->msg);
-
-                                msg_len = strlen(msg[count]->msg);
-                                if (pamconv_msg) {
-                                        size_t n = strlen(pamconv_msg);
-                                        pamconv_msg = xrealloc(pamconv_msg, n + msg_len + 2);
-                                        p = pamconv_msg + n;
-                                } else {
-                                        pamconv_msg = p = xmalloc(msg_len + 2);
-                                }
-                                memcpy(p, msg[count]->msg, msg_len);
-                                p[msg_len] = '\n';
-                                p[msg_len + 1] = '\0';
                                 break;
-
-                        case PAM_PROMPT_ECHO_ON:
-                        case PAM_ERROR_MSG:
                         default:
                                 free(reply);
                                 return PAM_CONV_ERR;
@@ -100,19 +85,19 @@ void pam_cleanup_proc(void *context)
                 pam_retval = pam_close_session((pam_handle_t *)pamh, 0);
                 if (pam_retval != PAM_SUCCESS) {
                         log("Cannot close PAM session: %.200s", 
-                        PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                                PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
                 }
 
                 pam_retval = pam_setcred((pam_handle_t *)pamh, PAM_DELETE_CRED);
                 if (pam_retval != PAM_SUCCESS) {
                         log("Cannot delete credentials: %.200s", 
-                        PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                                PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
                 }
 
                 pam_retval = pam_end((pam_handle_t *)pamh, pam_retval);
                 if (pam_retval != PAM_SUCCESS) {
                         log("Cannot release PAM authentication: %.200s", 
-                        PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                                PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
                 }
         }
 }
@@ -135,7 +120,8 @@ int auth_pam_password(struct passwd *pw, const char *password)
         
         pam_retval = pam_authenticate((pam_handle_t *)pamh, 0);
         if (pam_retval == PAM_SUCCESS) {
-                debug("PAM Password authentication accepted for user \"%.100s\"", pw->pw_name);
+                debug("PAM Password authentication accepted for user \"%.100s\"", 
+                        pw->pw_name);
                 return 1;
         } else {
                 debug("PAM Password authentication for \"%.100s\" failed: %s", 
@@ -148,26 +134,36 @@ int auth_pam_password(struct passwd *pw, const char *password)
 int do_pam_account(char *username, char *remote_user)
 {
         int pam_retval;
-
+        
         debug("PAM setting rhost to \"%.200s\"", get_canonical_hostname());
         pam_retval = pam_set_item((pam_handle_t *)pamh, PAM_RHOST, 
                 get_canonical_hostname());
         if (pam_retval != PAM_SUCCESS) {
-                fatal("PAM set rhost failed: %.200s", PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                fatal("PAM set rhost failed: %.200s", 
+                        PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
         }
 
         if (remote_user != NULL) {
                 debug("PAM setting ruser to \"%.200s\"", remote_user);
                 pam_retval = pam_set_item((pam_handle_t *)pamh, PAM_RUSER, remote_user);
                 if (pam_retval != PAM_SUCCESS) {
-                        fatal("PAM set ruser failed: %.200s", PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                        fatal("PAM set ruser failed: %.200s", 
+                                PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
                 }
         }
 
         pam_retval = pam_acct_mgmt((pam_handle_t *)pamh, 0);
-        if (pam_retval != PAM_SUCCESS) {
-                log("PAM rejected by account configuration: %.200s", PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
-                return(0);
+        switch (pam_retval) {
+                case PAM_SUCCESS:
+                        /* This is what we want */
+                        break;
+                case PAM_NEW_AUTHTOK_REQD:
+                        pam_msg_cat(NEW_AUTHTOK_MSG);
+                        break;
+                default:
+                        log("PAM rejected by account configuration: %.200s", 
+                                PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                        return(0);
         }
         
         return(1);
@@ -181,13 +177,17 @@ void do_pam_session(char *username, const char *ttyname)
         if (ttyname != NULL) {
                 debug("PAM setting tty to \"%.200s\"", ttyname);
                 pam_retval = pam_set_item((pam_handle_t *)pamh, PAM_TTY, ttyname);
-                if (pam_retval != PAM_SUCCESS)
-                        fatal("PAM set tty failed: %.200s", PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                if (pam_retval != PAM_SUCCESS) {
+                        fatal("PAM set tty failed: %.200s", 
+                                PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+                }
         }
 
         pam_retval = pam_open_session((pam_handle_t *)pamh, 0);
-        if (pam_retval != PAM_SUCCESS)
-                fatal("PAM session setup failed: %.200s", PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+        if (pam_retval != PAM_SUCCESS) {
+                fatal("PAM session setup failed: %.200s", 
+                        PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+        }
 }
 
 /* Set PAM credentials */ 
@@ -197,8 +197,10 @@ void do_pam_setcred()
  
         debug("PAM establishing creds");
         pam_retval = pam_setcred((pam_handle_t *)pamh, PAM_ESTABLISH_CRED);
-        if (pam_retval != PAM_SUCCESS)
-                fatal("PAM setcred failed: %.200s", PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+        if (pam_retval != PAM_SUCCESS) {
+                fatal("PAM setcred failed: %.200s", 
+                        PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+        }
 }
 
 /* Cleanly shutdown PAM */
@@ -217,9 +219,12 @@ void start_pam(struct passwd *pw)
 
         pam_retval = pam_start(SSHD_PAM_SERVICE, pw->pw_name, &conv, 
                 (pam_handle_t**)&pamh);
-        if (pam_retval != PAM_SUCCESS)
-                fatal("PAM initialisation failed: %.200s", PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
 
+        if (pam_retval != PAM_SUCCESS) {
+                fatal("PAM initialisation failed: %.200s", 
+                        PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
+        }
+        
         fatal_add_cleanup(&pam_cleanup_proc, NULL);
 }
 
@@ -237,8 +242,30 @@ char **fetch_pam_environment(void)
 /* or account checking to stderr */
 void print_pam_messages(void)
 {
-        if (pamconv_msg != NULL)
-                fprintf(stderr, pamconv_msg);
+        if (pam_msg != NULL)
+                fprintf(stderr, pam_msg);
+}
+
+/* Append a message to the PAM message buffer */
+void pam_msg_cat(const char *msg)
+{
+        char *p;
+        size_t new_msg_len;
+        size_t pam_msg_len;
+        
+        new_msg_len = strlen(msg);
+        
+        if (pam_msg) {
+                pam_msg_len = strlen(pam_msg);
+                pam_msg = xrealloc(pam_msg, new_msg_len + pam_msg_len + 2);
+                p = pam_msg + pam_msg_len;
+        } else {
+                pam_msg = p = xmalloc(new_msg_len + 2);
+        }
+
+        memcpy(p, msg, new_msg_len);
+        p[new_msg_len] = '\n';
+        p[new_msg_len + 1] = '\0';
 }
 
 #endif /* USE_PAM */
diff --git a/auth.c b/auth.c
index 0a58df58b..685b8bb35 100644
--- a/auth.c
+++ b/auth.c
@@ -121,17 +121,17 @@ allowed_user(struct passwd * pw)
         }
 
 #ifdef WITH_AIXAUTHENTICATE
-        if (loginrestrictions(pw->pw_name,S_RLOGIN,NULL,&loginmsg) != 0) {
+        if (loginrestrictions(pw->pw_name, S_RLOGIN, NULL, &loginmsg) != 0) {
                 if (loginmsg && *loginmsg) {
                         /* Remove embedded newlines (if any) */
                         char *p;
-                        for (p = loginmsg; *p; p++)
+                        for (p = loginmsg; *p; p++) {
                                 if (*p == '\n')
                                         *p = ' ';
+                        }
                         /* Remove trailing newline */
                         *--p = '\0';
-                        log("Login restricted for %s: %.100s",
-                                        pw->pw_name, loginmsg);
+                        log("Login restricted for %s: %.100s", pw->pw_name, loginmsg);
                 }
                 return 0;
         }
diff --git a/fake-getaddrinfo.c b/fake-getaddrinfo.c
index 456c41e58..b3af4aa2e 100644
--- a/fake-getaddrinfo.c
+++ b/fake-getaddrinfo.c
@@ -7,113 +7,112 @@
  * 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;
+        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_addr(hostname) != -1) {
+                if (NULL != (*res = malloc_ai(port, inet_addr(hostname))))
+                        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 */
diff --git a/fake-getnameinfo.c b/fake-getnameinfo.c
index f74f3128f..867cf90b5 100644
--- a/fake-getnameinfo.c
+++ b/fake-getnameinfo.c
@@ -7,55 +7,47 @@
  * 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 getnameinfo.c
- * will be used if you have broken getnameinfo or no getnameinfo.
  */
 
 #include "includes.h"
 #include "ssh.h"
 
 #ifndef HAVE_GETNAMEINFO
-int
-getnameinfo(sa, salen, host, hostlen, serv, servlen, flags)
-const struct sockaddr *sa;
-size_t salen;
-char *host;
-size_t hostlen;
-char *serv;
-size_t servlen;
-int flags;
+int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, 
+                size_t hostlen, char *serv, size_t servlen, int flags)
 {
-  struct sockaddr_in *sin = (struct sockaddr_in *)sa;
-  struct hostent *hp;
-  char tmpserv[16];
-  
-  if (serv) {
-    sprintf(tmpserv, "%d", ntohs(sin->sin_port));
-    if (strlen(tmpserv) > servlen)
-      return EAI_MEMORY;
-    else
-      strcpy(serv, tmpserv);
-  }
-  if (host)
-    if (flags & NI_NUMERICHOST)
-      if (strlen(inet_ntoa(sin->sin_addr)) > hostlen)
-        return EAI_MEMORY;
-      else {
-        strcpy(host, inet_ntoa(sin->sin_addr));
-        return 0;
-      }
-    else
-      if (NULL != (hp = gethostbyaddr((char *)&sin->sin_addr, 
-                        sizeof(struct in_addr), AF_INET)))
-        if (strlen(hp->h_name) > hostlen)
-          return EAI_MEMORY;
-        else {
-          strcpy(host, hp->h_name);
-          return 0;
+        struct sockaddr_in *sin = (struct sockaddr_in *)sa;
+        struct hostent *hp;
+        char tmpserv[16];
+
+        if (serv) {
+                snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port));
+                if (strlen(tmpserv) > servlen)
+                        return EAI_MEMORY;
+                else
+                        strcpy(serv, tmpserv);
         }
-      else
-        return EAI_NODATA;
-  return 0;
+
+        if (host) {
+                if (flags & NI_NUMERICHOST) {
+                        if (strlen(inet_ntoa(sin->sin_addr)) > hostlen)
+                                return EAI_MEMORY;
+
+                        strcpy(host, inet_ntoa(sin->sin_addr));
+                        return 0;
+                } else {
+                        hp = gethostbyaddr((char *)&sin->sin_addr, 
+                                sizeof(struct in_addr), AF_INET);
+                        if (hp == NULL)
+                                return EAI_NODATA;
+                        
+                        if (strlen(hp->h_name) > hostlen)
+                                return EAI_MEMORY;
+
+                        strcpy(host, hp->h_name);
+                        return 0;
+                }
+        }
+        return 0;
 }
 #endif /* !HAVE_GETNAMEINFO */
diff --git a/fake-getnameinfo.h b/fake-getnameinfo.h
index ecf0df2cf..0d25f4270 100644
--- a/fake-getnameinfo.h
+++ b/fake-getnameinfo.h
@@ -2,6 +2,7 @@
 #define _FAKE_GETNAMEINFO_H
 
 #include "config.h"
+
 #ifndef HAVE_GETNAMEINFO
 int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, 
                 size_t hostlen, char *serv, size_t servlen, int flags);
diff --git a/fake-socket.h b/fake-socket.h
index e11ad44e0..0e1624d11 100644
--- a/fake-socket.h
+++ b/fake-socket.h
@@ -5,10 +5,10 @@
 #include "sys/types.h"
 
 #ifndef HAVE_STRUCT_SOCKADDR_STORAGE
-#define _SS_MAXSIZE     128     /* Implementation specific max size */
-#define _SS_ALIGNSIZE   (sizeof(int))
-#define _SS_PAD1SIZE    (_SS_ALIGNSIZE - sizeof(u_short))
-#define _SS_PAD2SIZE    (_SS_MAXSIZE - (sizeof(u_short) + \
+# define        _SS_MAXSIZE     128     /* Implementation specific max size */
+# define        _SS_ALIGNSIZE   (sizeof(int))
+# define        _SS_PAD1SIZE    (_SS_ALIGNSIZE - sizeof(u_short))
+# define        _SS_PAD2SIZE    (_SS_MAXSIZE - (sizeof(u_short) + \
                                         _SS_PAD1SIZE + _SS_ALIGNSIZE))
 
 struct sockaddr_storage {
@@ -20,7 +20,7 @@ struct sockaddr_storage {
 #endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */
 
 #ifndef IN6_IS_ADDR_LOOPBACK
-#define IN6_IS_ADDR_LOOPBACK(a) \
+# define IN6_IS_ADDR_LOOPBACK(a) \
         (((u_int32_t *) (a))[0] == 0 && ((u_int32_t *) (a))[1] == 0 && \
          ((u_int32_t *) (a))[2] == 0 && ((u_int32_t *) (a))[3] == htonl (1))
 #endif /* !IN6_IS_ADDR_LOOPBACK */
diff --git a/login.c b/login.c
index 6749a1556..6fdc71e68 100644
--- a/login.c
+++ b/login.c
@@ -18,7 +18,7 @@
  */
 
 #include "includes.h"
-RCSID("$Id: login.c,v 1.28 2000/05/30 03:12:46 damien Exp $");
+RCSID("$Id: login.c,v 1.29 2000/05/31 01:20:12 damien Exp $");
 
 #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX)
 # include <utmpx.h>
@@ -38,6 +38,11 @@ RCSID("$Id: login.c,v 1.28 2000/05/30 03:12:46 damien Exp $");
 # include <login.h>
 #endif
 
+#ifdef WITH_AIXAUTHENTICATE
+/* This is done in do_authentication */
+# define DISABLE_LASTLOG
+#endif /* WITH_AIXAUTHENTICATE */
+
 /*
  * Returns the time when the user last logged in.  Returns 0 if the
  * information is not available.  This must be called before record_login.
@@ -53,58 +58,50 @@ unsigned long
 get_last_login_time(uid_t uid, const char *logname,
                     char *buf, unsigned int bufsize)
 {
-#if defined(WITH_AIXAUTHENTICATE)
-        /* This is done in do_authentication */
-        return (unsigned long) 0;
-#else
 #if defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG)
         struct lastlog ll;
-        char *lastlog;
         int fd;
-#ifdef LASTLOG_IS_DIR
+# ifdef LASTLOG_IS_DIR
         char lbuf[1024];
-#endif /* LASTLOG_IS_DIR */
 
-        lastlog = _PATH_LASTLOG;
+        snprintf(lbuf, sizeof(buf), "%s/%s", _PATH_LASTLOG, logname);
+        if ((fd = open(lbuf, O_RDONLY)) < 0)
+                return 0;
+# else /* LASTLOG_IS_DIR */
         buf[0] = '\0';
 
-#ifndef LASTLOG_IS_DIR
-        fd = open(lastlog, O_RDONLY);
-        if (fd < 0)
+        if ((fd = open(_PATH_LASTLOG, O_RDONLY)) < 0)
                 return 0;
+
         lseek(fd, (off_t) ((long) uid * sizeof(ll)), SEEK_SET);
-#else /* LASTLOG_IS_DIR */
-        snprintf(lbuf, sizeof(buf), "%s/%s", lastlog, logname);
-        fd = open(lbuf, O_RDONLY);
-        if (fd < 0)
-                return 0;
-#endif /* LASTLOG_IS_DIR */
+# endif /* LASTLOG_IS_DIR */
         if (read(fd, &ll, sizeof(ll)) != sizeof(ll)) {
                 close(fd);
                 return 0;
         }
+
         close(fd);
+
         if (bufsize > sizeof(ll.ll_host) + 1)
                 bufsize = sizeof(ll.ll_host) + 1;
         strncpy(buf, ll.ll_host, bufsize - 1);
         buf[bufsize - 1] = 0;
-        return ll.ll_time;
 
+        return ll.ll_time;
 #else /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */
 # ifdef HAVE_TYPE_IN_UTMP
         /* Look in wtmp for the last login */
         struct utmp  wt;
-        char        *wt_file = _PATH_WTMP;
-        int         fd1;
+        int fd1;
         unsigned long t = 0;
 
-        if ( (fd1 = open(wt_file, O_RDONLY)) < 0 ) {
-                error("Couldn't open %.100s to find last login time.", wt_file);
+        if ((fd1 = open(_PATH_WTMP, O_RDONLY)) < 0) {
+                error("Couldn't open %.100s to find last login time.", _PATH_WTMP);
                 return 0;
         }
 
         /* seek to last record of file */
-        lseek(fd1, (off_t)(0-sizeof(struct utmp)), SEEK_END);
+        lseek(fd1, (off_t)(0 - sizeof(struct utmp)), SEEK_END);
 
         /* loop through wtmp for our last user login record */
         do {
@@ -113,47 +110,44 @@ get_last_login_time(uid_t uid, const char *logname,
                         return 0;
                 }
 
-                if ( wt.ut_type == USER_PROCESS) {
-                        if ( !strncmp(logname, wt.ut_user, 8) ) {
-                                t = (unsigned long) wt.ut_time;
-# ifdef HAVE_HOST_IN_UTMP
+                if (wt.ut_type == USER_PROCESS) {
+                        if (!strncmp(logname, wt.ut_user, 8)) {
+                                t = (unsigned long)wt.ut_time;
+#  ifdef HAVE_HOST_IN_UTMP
                                 if (bufsize > sizeof(wt.ut_host) + 1)
-                                bufsize = sizeof(wt.ut_host) + 1;
+                                        bufsize = sizeof(wt.ut_host) + 1;
                                 strncpy(buf, wt.ut_host, bufsize - 1);
                                 buf[bufsize - 1] = 0;
-# else /* HAVE_HOST_IN_UTMP */
+#  else /* HAVE_HOST_IN_UTMP */
                                 buf[0] = 0;
-# endif /* HAVE_HOST_IN_UTMP */
+#  endif /* HAVE_HOST_IN_UTMP */
                         }
                 }
 
-                if (lseek(fd1, (off_t)(0-2*sizeof(struct utmp)), SEEK_CUR) == -1)
+                if (lseek(fd1, (off_t)(0 - (2 * sizeof(struct utmp))), SEEK_CUR) < 0)
                         break;
         } while (t == 0);
 
         return t;
-# else
+# else /* HAVE_TYPE_IN_UTMP */
         return 0;
 # endif /* HAVE_TYPE_IN_UTMP */
 #endif /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */
-#endif /* defined(WITH_AIXAUTHENTICATE) */
 }
 
 /*
- * Records that the user has logged in.  I these parts of operating systems
- * were more standardized.
+ * Records that the user has logged in.  I wish these parts of operating 
+ * systems were more standardized.
  */
-
 void
 record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
              const char *host, struct sockaddr * addr)
 {
 #if defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG)
         struct lastlog ll;
-        char *lastlog;
-#ifdef LASTLOG_IS_DIR
+# ifdef LASTLOG_IS_DIR
         char buf[1024];
-#endif /* LASTLOG_IS_DIR */
+# endif /* LASTLOG_IS_DIR */
 #endif /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */
         struct utmp u;
 #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX)
@@ -163,28 +157,35 @@ record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
         /* Construct an utmp/wtmp entry. */
         memset(&u, 0, sizeof(u));
         strncpy(u.ut_line, ttyname + 5, sizeof(u.ut_line));
+        
 #if defined(HAVE_ID_IN_UTMP)
-#ifdef _AIX
+# ifdef _AIX
         strncpy(u.ut_id, ttyname + 5, sizeof(u.ut_id));
-#else /* !AIX */
+# else /* !AIX */
         strncpy(u.ut_id, ttyname + 8, sizeof(u.ut_id));
-#endif
+# endif
 #endif /* defined(HAVE_ID_IN_UTMP) */ 
+
         strncpy(u.ut_name, user, sizeof(u.ut_name));
+        
 #if defined(HAVE_TV_IN_UTMP)
         (void)gettimeofday(&u.ut_tv, NULL);
 #else /* defined(HAVE_TV_IN_UTMP) */
         u.ut_time = time(NULL);
 #endif /* defined(HAVE_TV_IN_UTMP) */
+
 #if defined(HAVE_PID_IN_UTMP)
         u.ut_pid = (pid_t)pid;
 #endif /* HAVE_PID_IN_UTMP */
+
 #if defined(HAVE_TYPE_IN_UTMP)
         u.ut_type = (uid == -1)?DEAD_PROCESS:USER_PROCESS;
 #endif /* HAVE_TYPE_IN_UTMP */
+
 #if defined(HAVE_HOST_IN_UTMP)
         strncpy(u.ut_host, host, sizeof(u.ut_host));
 #endif
+
 #if defined(HAVE_ADDR_IN_UTMP)
         if (addr) {
                 switch (addr->sa_family) {
@@ -193,26 +194,29 @@ record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
                                 memcpy(&(u.ut_addr), &(in->sin_addr), sizeof(&(in->sin_addr)));
                                 break;
                         }
-#if defined(HAVE_ADDR_V6_IN_UTMP)
+# if defined(HAVE_ADDR_V6_IN_UTMP)
                         case AF_INET6: {
                                 struct sockaddr_in6 *in6 = (struct sockaddr_in6*)addr;
                                 memcpy(u.ut_addr_v6, &(in6->sin6_addr), sizeof(&(in6->sin6_addr)));
                                 break;
                         }
-#endif
+# endif /* defined(HAVE_ADDR_V6_IN_UTMP) */
                         default:
                                 break;
                 }
         }
-#endif
+#endif /* defined(HAVE_ADDR_IN_UTMP) */
 
 #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX)
         memset(&utx, 0, sizeof(utx));
+
         strncpy(utx.ut_user, user, sizeof(utx.ut_name));
         strncpy(utx.ut_line, ttyname + 5, sizeof(utx.ut_line));
         strncpy(utx.ut_id, ttyname + 8, sizeof(utx.ut_id));
+
         utx.ut_pid = (pid_t)pid;
         (void)gettimeofday(&utx.ut_tv, NULL);
+        
         utx.ut_type = (uid == -1)?DEAD_PROCESS:USER_PROCESS;
 # ifdef HAVE_HOST_IN_UTMPX
 #  ifdef HAVE_SYSLEN_IN_UTMPX
@@ -225,7 +229,8 @@ record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
 #  endif /* HAVE_SYSLEN_IN_UTMPX */
         utx.ut_host[sizeof(utx.ut_host)-1] = '\0';
 # endif
-#if defined(HAVE_ADDR_IN_UTMPX)
+
+# if defined(HAVE_ADDR_IN_UTMPX)
         if (addr) {
                 switch (addr->sa_family) {
                         case AF_INET: {
@@ -233,31 +238,27 @@ record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
                                 memcpy(&(utx.ut_addr), &(in->sin_addr), sizeof(&(in->sin_addr)));
                                 break;
                         }
-#if defined(HAVE_ADDR_V6_IN_UTMPX)
+#  if defined(HAVE_ADDR_V6_IN_UTMPX)
                         case AF_INET6: {
                                 struct sockaddr_in6 *in6 = (struct sockaddr_in6*)addr;
                                 memcpy(utx.ut_addr_v6, &(in6->sin6_addr), sizeof(&(in6->sin6_addr)));
                                 break;
                         }
-#endif
+#  endif /* defined(HAVE_ADDR_V6_IN_UTMPX) */
                         default:
                                 break;
                 }
         }
-#endif
+# endif /* defined(HAVE_ADDR_IN_UTMPX) */
 #endif /* defined(HAVE_UTMPX_H) && defined(USE_UTMPX) */
 
-/*#if defined(HAVE_UTMPX_H) && defined(USE_UTMPX) && !defined(HAVE_LOGIN)*/
 #if defined(HAVE_UTMPX_H) && defined(USE_UTMPX)
         login(&u, &utx);
 #else /* defined(HAVE_UTMPX_H) && defined(USE_UTMPX) */
         login(&u);
 #endif /* defined(HAVE_UTMPX_H) && defined(USE_UTMPX) */
 
-#if defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) && !defined(WITH_AIXAUTHENTICATE)
-        /* AIX does this in do_authentication */
-        lastlog = _PATH_LASTLOG;
-
+#if defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG)
         /* Update lastlog unless actually recording a logout. */
         if (strcmp(user, "") != 0) {
                 int fd;
@@ -271,21 +272,25 @@ record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
                 ll.ll_time = time(NULL);
                 strncpy(ll.ll_line, ttyname + 5, sizeof(ll.ll_line));
                 strncpy(ll.ll_host, host, sizeof(ll.ll_host));
-#ifdef LASTLOG_IS_DIR
-                snprintf(buf, sizeof(buf), "%s/%s", lastlog, user);
-                fd = open(buf, O_RDWR);
-                if (fd >= 0) {
-#else /* LASTLOG_IS_DIR */
-                fd = open(lastlog, O_RDWR);
-                if (fd >= 0) {
-                        lseek(fd, (off_t) ((long) uid * sizeof(ll)), SEEK_SET);
-#endif /* LASTLOG_IS_DIR */
+# ifdef LASTLOG_IS_DIR
+                snprintf(buf, sizeof(buf), "%s/%s", _PATH_LASTLOG, user);
+                if ((fd = open(buf, O_RDWR)) >= 0) {
                         if (write(fd, &ll, sizeof(ll)) != sizeof(ll))
-                                log("Could not write %.100s: %.100s", lastlog, strerror(errno));
+                                log("Could not write %.100s: %.100s", buf, strerror(errno));
                         close(fd);
                 }
+# else /* LASTLOG_IS_DIR */
+                if ((fd = open(_PATH_LASTLOG, O_RDWR)) >= 0) {
+                        lseek(fd, (off_t) ((long) uid * sizeof(ll)), SEEK_SET);
+                        if (write(fd, &ll, sizeof(ll)) != sizeof(ll)) {
+                                log("Could not write %.100s: %.100s", _PATH_LASTLOG, 
+                                        strerror(errno));
+                        }
+                        close(fd);
+                }
+# endif /* LASTLOG_IS_DIR */
         }
-#endif /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) && !defined(WITH_AIXAUTHENTICATE) */
+#endif /* defined(_PATH_LASTLOG) && !defined(DISABLE_LASTLOG) */
 }
 
 /* Records that the user has logged out. */