- djm@cvs.openbsd.org 2005/06/17 02:44:33

     [auth-rsa.c auth.c auth1.c auth2-chall.c auth2-gss.c authfd.c authfile.c]
     [bufaux.c canohost.c channels.c cipher.c clientloop.c dns.c gss-serv.c]
     [kex.c kex.h key.c mac.c match.c misc.c packet.c packet.h scp.c]
     [servconf.c session.c session.h sftp-client.c sftp-server.c sftp.c]
     [ssh-keyscan.c ssh-rsa.c sshconnect.c sshconnect1.c sshconnect2.c sshd.c]
     make this -Wsign-compare clean; ok avsm@ markus@
     NB. auth1.c changes not committed yet (conflicts with uncommitted sync)
     NB2. more work may be needed to make portable Wsign-compare clean

35 files changed, 160 insertions, 134 deletions

diff --git a/ChangeLog b/ChangeLog
index 02eb57908..f3c3c93ba 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -8,6 +8,15 @@
      [canohost.c channels.c sshd.c]
      don't exit if getpeername fails for forwarded ports; bugzilla #1054;
      ok djm
+   - djm@cvs.openbsd.org 2005/06/17 02:44:33
+     [auth-rsa.c auth.c auth1.c auth2-chall.c auth2-gss.c authfd.c authfile.c]
+     [bufaux.c canohost.c channels.c cipher.c clientloop.c dns.c gss-serv.c]
+     [kex.c kex.h key.c mac.c match.c misc.c packet.c packet.h scp.c]
+     [servconf.c session.c session.h sftp-client.c sftp-server.c sftp.c]
+     [ssh-keyscan.c ssh-rsa.c sshconnect.c sshconnect1.c sshconnect2.c sshd.c]
+     make this -Wsign-compare clean; ok avsm@ markus@
+     NB. auth1.c changes not committed yet (conflicts with uncommitted sync)
+     NB2. more work may be needed to make portable Wsign-compare clean
 
 20050616
  - (djm) OpenBSD CVS Sync
@@ -2725,4 +2734,4 @@
    - (djm) Trim deprecated options from INSTALL. Mention UsePAM
    - (djm) Fix quote handling in sftp; Patch from admorten AT umich.edu
 
-$Id: ChangeLog,v 1.3822 2005/06/17 02:55:03 djm Exp $
+$Id: ChangeLog,v 1.3823 2005/06/17 02:59:34 djm Exp $
diff --git a/auth-rsa.c b/auth-rsa.c
index 4378008d3..d9c9652dc 100644
--- a/auth-rsa.c
+++ b/auth-rsa.c
@@ -14,7 +14,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth-rsa.c,v 1.62 2004/12/11 01:48:56 dtucker Exp $");
+RCSID("$OpenBSD: auth-rsa.c,v 1.63 2005/06/17 02:44:32 djm Exp $");
 
 #include <openssl/rsa.h>
 #include <openssl/md5.h>
@@ -205,6 +205,7 @@ auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey)
         while (read_keyfile_line(f, file, line, sizeof(line), &linenum) != -1) {
                 char *cp;
                 char *key_options;
+                int keybits;
 
                 /* Skip leading whitespace, empty and comment lines. */
                 for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
@@ -243,7 +244,8 @@ auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey)
                         continue;
 
                 /* check the real bits  */
-                if (bits != BN_num_bits(key->rsa->n))
+                keybits = BN_num_bits(key->rsa->n);
+                if (keybits < 0 || bits != (u_int)keybits)
                         logit("Warning: %s, line %lu: keysize mismatch: "
                             "actual %d vs. announced %d.",
                             file, linenum, BN_num_bits(key->rsa->n), bits);
diff --git a/auth.c b/auth.c
index 68c2824fb..82fe8f06b 100644
--- a/auth.c
+++ b/auth.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth.c,v 1.59 2005/06/06 11:20:36 djm Exp $");
+RCSID("$OpenBSD: auth.c,v 1.60 2005/06/17 02:44:32 djm Exp $");
 
 #ifdef HAVE_LOGIN_H
 #include <login.h>
@@ -76,7 +76,7 @@ allowed_user(struct passwd * pw)
         struct stat st;
         const char *hostname = NULL, *ipaddr = NULL, *passwd = NULL;
         char *shell;
-        int i;
+        u_int i;
 #ifdef USE_SHADOW
         struct spwd *spw = NULL;
 #endif
diff --git a/auth2-chall.c b/auth2-chall.c
index 384a543ee..1cea15378 100644
--- a/auth2-chall.c
+++ b/auth2-chall.c
@@ -23,7 +23,7 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include "includes.h"
-RCSID("$OpenBSD: auth2-chall.c,v 1.22 2005/01/19 13:11:47 dtucker Exp $");
+RCSID("$OpenBSD: auth2-chall.c,v 1.23 2005/06/17 02:44:32 djm Exp $");
 
 #include "ssh2.h"
 #include "auth.h"
@@ -239,8 +239,7 @@ send_userauth_info_request(Authctxt *authctxt)
 {
         KbdintAuthctxt *kbdintctxt;
         char *name, *instr, **prompts;
-        int i;
-        u_int *echo_on;
+        u_int i, *echo_on;
 
         kbdintctxt = authctxt->kbdintctxt;
         if (kbdintctxt->device->query(kbdintctxt->ctxt,
@@ -273,8 +272,8 @@ input_userauth_info_response(int type, u_int32_t seq, void *ctxt)
 {
         Authctxt *authctxt = ctxt;
         KbdintAuthctxt *kbdintctxt;
-        int i, authenticated = 0, res, len;
-        u_int nresp;
+        int authenticated = 0, res, len;
+        u_int i, nresp;
         char **response = NULL, *method;
 
         if (authctxt == NULL)
diff --git a/auth2-gss.c b/auth2-gss.c
index 3289ba18e..855b61b4e 100644
--- a/auth2-gss.c
+++ b/auth2-gss.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: auth2-gss.c,v 1.8 2004/06/21 17:36:31 avsm Exp $      */
+/*      $OpenBSD: auth2-gss.c,v 1.9 2005/06/17 02:44:32 djm Exp $       */
 
 /*
  * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
@@ -61,7 +61,7 @@ userauth_gssapi(Authctxt *authctxt)
         int present;
         OM_uint32 ms;
         u_int len;
-        char *doid = NULL;
+        u_char *doid = NULL;
 
         if (!authctxt->valid || authctxt->user == NULL)
                 return (0);
diff --git a/authfd.c b/authfd.c
index 9ce5b5ea8..8976616b4 100644
--- a/authfd.c
+++ b/authfd.c
@@ -35,7 +35,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: authfd.c,v 1.65 2005/05/24 17:32:43 avsm Exp $");
+RCSID("$OpenBSD: authfd.c,v 1.66 2005/06/17 02:44:32 djm Exp $");
 
 #include <openssl/evp.h>
 
@@ -114,8 +114,7 @@ ssh_get_authentication_socket(void)
 static int
 ssh_request_reply(AuthenticationConnection *auth, Buffer *request, Buffer *reply)
 {
-        int l;
-        u_int len;
+        u_int l, len;
         char buf[1024];
 
         /* Get the length of the message, and format it in the buffer. */
@@ -302,6 +301,7 @@ ssh_get_first_identity(AuthenticationConnection *auth, char **comment, int versi
 Key *
 ssh_get_next_identity(AuthenticationConnection *auth, char **comment, int version)
 {
+        int keybits;
         u_int bits;
         u_char *blob;
         u_int blen;
@@ -322,7 +322,8 @@ ssh_get_next_identity(AuthenticationConnection *auth, char **comment, int versio
                 buffer_get_bignum(&auth->identities, key->rsa->e);
                 buffer_get_bignum(&auth->identities, key->rsa->n);
                 *comment = buffer_get_string(&auth->identities, NULL);
-                if (bits != BN_num_bits(key->rsa->n))
+                keybits = BN_num_bits(key->rsa->n);
+                if (keybits < 0 || bits != (u_int)keybits)
                         logit("Warning: identity keysize mismatch: actual %d, announced %u",
                             BN_num_bits(key->rsa->n), bits);
                 break;
diff --git a/authfile.c b/authfile.c
index 6a04cd7a9..420813f37 100644
--- a/authfile.c
+++ b/authfile.c
@@ -36,7 +36,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: authfile.c,v 1.60 2004/12/11 01:48:56 dtucker Exp $");
+RCSID("$OpenBSD: authfile.c,v 1.61 2005/06/17 02:44:32 djm Exp $");
 
 #include <openssl/err.h>
 #include <openssl/evp.h>
@@ -52,6 +52,7 @@ RCSID("$OpenBSD: authfile.c,v 1.60 2004/12/11 01:48:56 dtucker Exp $");
 #include "authfile.h"
 #include "rsa.h"
 #include "misc.h"
+#include "atomicio.h"
 
 /* Version identification string for SSH v1 identity files. */
 static const char authfile_id_string[] =
@@ -147,8 +148,8 @@ key_save_private_rsa1(Key *key, const char *filename, const char *passphrase,
                 buffer_free(&encrypted);
                 return 0;
         }
-        if (write(fd, buffer_ptr(&encrypted), buffer_len(&encrypted)) !=
-            buffer_len(&encrypted)) {
+        if (atomicio(vwrite, fd, buffer_ptr(&encrypted),
+            buffer_len(&encrypted)) != buffer_len(&encrypted)) {
                 error("write to key file %s failed: %s", filename,
                     strerror(errno));
                 buffer_free(&encrypted);
@@ -236,7 +237,7 @@ key_load_public_rsa1(int fd, const char *filename, char **commentp)
         Key *pub;
         struct stat st;
         char *cp;
-        int i;
+        u_int i;
         size_t len;
 
         if (fstat(fd, &st) < 0) {
@@ -253,7 +254,7 @@ key_load_public_rsa1(int fd, const char *filename, char **commentp)
         buffer_init(&buffer);
         cp = buffer_append_space(&buffer, len);
 
-        if (read(fd, cp, (size_t) len) != (size_t) len) {
+        if (atomicio(read, fd, cp, len) != len) {
                 debug("Read from key file %.200s failed: %.100s", filename,
                     strerror(errno));
                 buffer_free(&buffer);
@@ -322,7 +323,8 @@ static Key *
 key_load_private_rsa1(int fd, const char *filename, const char *passphrase,
     char **commentp)
 {
-        int i, check1, check2, cipher_type;
+        u_int i;
+        int check1, check2, cipher_type;
         size_t len;
         Buffer buffer, decrypted;
         u_char *cp;
@@ -347,7 +349,7 @@ key_load_private_rsa1(int fd, const char *filename, const char *passphrase,
         buffer_init(&buffer);
         cp = buffer_append_space(&buffer, len);
 
-        if (read(fd, cp, (size_t) len) != (size_t) len) {
+        if (atomicio(read, fd, cp, len) != len) {
                 debug("Read from key file %.200s failed: %.100s", filename,
                     strerror(errno));
                 buffer_free(&buffer);
diff --git a/bufaux.c b/bufaux.c
index 5dbf2b770..8d096a056 100644
--- a/bufaux.c
+++ b/bufaux.c
@@ -37,7 +37,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: bufaux.c,v 1.35 2005/03/10 22:01:05 deraadt Exp $");
+RCSID("$OpenBSD: bufaux.c,v 1.36 2005/06/17 02:44:32 djm Exp $");
 
 #include <openssl/bn.h>
 #include "bufaux.h"
@@ -154,7 +154,7 @@ buffer_put_bignum2_ret(Buffer *buffer, const BIGNUM *value)
         buf[0] = 0x00;
         /* Get the value of in binary */
         oi = BN_bn2bin(value, buf+1);
-        if (oi != bytes-1) {
+        if (oi < 0 || (u_int)oi != bytes - 1) {
                 error("buffer_put_bignum2_ret: BN_bn2bin() failed: "
                     "oi %d != bin_size %d", oi, bytes);
                 xfree(buf);
diff --git a/canohost.c b/canohost.c
index c3ab45556..04dc3d182 100644
--- a/canohost.c
+++ b/canohost.c
@@ -12,7 +12,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: canohost.c,v 1.43 2005/06/16 08:00:00 markus Exp $");
+RCSID("$OpenBSD: canohost.c,v 1.44 2005/06/17 02:44:32 djm Exp $");
 
 #include "packet.h"
 #include "xmalloc.h"
@@ -143,7 +143,8 @@ check_ip_options(int sock, char *ipaddr)
         u_char options[200];
         char text[sizeof(options) * 3 + 1];
         socklen_t option_size;
-        int i, ipproto;
+        u_int i;
+        int ipproto;
         struct protoent *ip;
 
         if ((ip = getprotobyname("ip")) != NULL)
diff --git a/channels.c b/channels.c
index 66b15f5b5..7ca1c53ba 100644
--- a/channels.c
+++ b/channels.c
@@ -39,7 +39,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: channels.c,v 1.216 2005/06/16 08:00:00 markus Exp $");
+RCSID("$OpenBSD: channels.c,v 1.217 2005/06/17 02:44:32 djm Exp $");
 
 #include "ssh.h"
 #include "ssh1.h"
@@ -894,7 +894,7 @@ static int
 channel_decode_socks4(Channel *c, fd_set * readset, fd_set * writeset)
 {
         char *p, *host;
-        int len, have, i, found;
+        u_int len, have, i, found;
         char username[256];
         struct {
                 u_int8_t version;
@@ -979,7 +979,7 @@ channel_decode_socks5(Channel *c, fd_set * readset, fd_set * writeset)
         } s5_req, s5_rsp;
         u_int16_t dest_port;
         u_char *p, dest_addr[255+1];
-        int i, have, found, nmethods, addrlen, af;
+        u_int have, i, found, nmethods, addrlen, af;
 
         debug2("channel %d: decode socks5", c->self);
         p = buffer_ptr(&c->input);
@@ -1075,7 +1075,8 @@ static void
 channel_pre_dynamic(Channel *c, fd_set * readset, fd_set * writeset)
 {
         u_char *p;
-        int have, ret;
+        u_int have;
+        int ret;
 
         have = buffer_len(&c->input);
         c->delayed = 0;
diff --git a/cipher.c b/cipher.c
index 8096a5174..20d0a80c4 100644
--- a/cipher.c
+++ b/cipher.c
@@ -35,7 +35,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: cipher.c,v 1.75 2005/06/09 13:43:49 dtucker Exp $");
+RCSID("$OpenBSD: cipher.c,v 1.76 2005/06/17 02:44:32 djm Exp $");
 
 #include "xmalloc.h"
 #include "log.h"
@@ -235,7 +235,7 @@ cipher_init(CipherContext *cc, Cipher *cipher,
                 fatal("cipher_init: EVP_CipherInit failed for %s",
                     cipher->name);
         klen = EVP_CIPHER_CTX_key_length(&cc->evp);
-        if (klen > 0 && keylen != klen) {
+        if (klen > 0 && keylen != (u_int)klen) {
                 debug2("cipher_init: set keylen (%d -> %d)", klen, keylen);
                 if (EVP_CIPHER_CTX_set_key_length(&cc->evp, keylen) == 0)
                         fatal("cipher_init: set keylen failed (%d -> %d)",
@@ -326,9 +326,9 @@ cipher_get_keyiv(CipherContext *cc, u_char *iv, u_int len)
         case SSH_CIPHER_DES:
         case SSH_CIPHER_BLOWFISH:
                 evplen = EVP_CIPHER_CTX_iv_length(&cc->evp);
-                if (evplen == 0)
+                if (evplen <= 0)
                         return;
-                if (evplen != len)
+                if ((u_int)evplen != len)
                         fatal("%s: wrong iv length %d != %d", __func__,
                             evplen, len);
 #if OPENSSL_VERSION_NUMBER < 0x00907000L
diff --git a/clientloop.c b/clientloop.c
index ee36cc9e5..a030cf6e4 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -59,7 +59,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: clientloop.c,v 1.138 2005/06/16 03:38:36 djm Exp $");
+RCSID("$OpenBSD: clientloop.c,v 1.139 2005/06/17 02:44:32 djm Exp $");
 
 #include "ssh.h"
 #include "ssh1.h"
@@ -659,12 +659,12 @@ client_process_control(fd_set * readset)
 {
         Buffer m;
         Channel *c;
-        int client_fd, new_fd[3], ver, i, allowed;
+        int client_fd, new_fd[3], ver, allowed;
         socklen_t addrlen;
         struct sockaddr_storage addr;
         struct confirm_ctx *cctx;
         char *cmd;
-        u_int len, env_len, command, flags;
+        u_int i, len, env_len, command, flags;
         uid_t euid;
         gid_t egid;
 
@@ -971,7 +971,10 @@ process_escapes(Buffer *bin, Buffer *bout, Buffer *berr, char *buf, int len)
         u_char ch;
         char *s;
 
-        for (i = 0; i < len; i++) {
+        if (len <= 0)
+                return (0);
+
+        for (i = 0; i < (u_int)len; i++) {
                 /* Get one character at a time. */
                 ch = buf[i];
 
diff --git a/dns.c b/dns.c
index 5a964bc7f..4487c1aba 100644
--- a/dns.c
+++ b/dns.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: dns.c,v 1.11 2005/04/20 10:05:45 jakob Exp $  */
+/*      $OpenBSD: dns.c,v 1.12 2005/06/17 02:44:32 djm Exp $    */
 
 /*
  * Copyright (c) 2003 Wesley Griffin. All rights reserved.
@@ -43,7 +43,7 @@
 #include "uuencode.h"
 
 extern char *__progname;
-RCSID("$OpenBSD: dns.c,v 1.11 2005/04/20 10:05:45 jakob Exp $");
+RCSID("$OpenBSD: dns.c,v 1.12 2005/06/17 02:44:32 djm Exp $");
 
 #ifndef LWRES
 static const char *errset_text[] = {
@@ -171,7 +171,7 @@ int
 verify_host_key_dns(const char *hostname, struct sockaddr *address,
     const Key *hostkey, int *flags)
 {
-        int counter;
+        u_int counter;
         int result;
         struct rrsetinfo *fingerprints = NULL;
 
@@ -274,7 +274,7 @@ export_dns_rr(const char *hostname, const Key *key, FILE *f, int generic)
         u_char *rdata_digest;
         u_int rdata_digest_len;
 
-        int i;
+        u_int i;
         int success = 0;
 
         if (dns_read_key(&rdata_pubkey_algorithm, &rdata_digest_type,
diff --git a/gss-serv.c b/gss-serv.c
index de32a3f2e..e1b843f01 100644
--- a/gss-serv.c
+++ b/gss-serv.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: gss-serv.c,v 1.5 2003/11/17 11:06:07 markus Exp $     */
+/*      $OpenBSD: gss-serv.c,v 1.6 2005/06/17 02:44:32 djm Exp $        */
 
 /*
  * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
@@ -134,7 +134,7 @@ ssh_gssapi_accept_ctx(Gssctxt *ctx, gss_buffer_desc *recv_tok,
 static OM_uint32
 ssh_gssapi_parse_ename(Gssctxt *ctx, gss_buffer_t ename, gss_buffer_t name)
 {
-        char *tok;
+        u_char *tok;
         OM_uint32 offset;
         OM_uint32 oidl;
 
diff --git a/kex.c b/kex.c
index a668346c3..8736aa286 100644
--- a/kex.c
+++ b/kex.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: kex.c,v 1.60 2004/06/21 17:36:31 avsm Exp $");
+RCSID("$OpenBSD: kex.c,v 1.61 2005/06/17 02:44:32 djm Exp $");
 
 #include <openssl/crypto.h>
 
@@ -52,7 +52,7 @@ static void kex_choose_conf(Kex *);
 static void
 kex_prop2buf(Buffer *b, char *proposal[PROPOSAL_MAX])
 {
-        int i;
+        u_int i;
 
         buffer_clear(b);
         /*
@@ -101,7 +101,7 @@ kex_buf2prop(Buffer *raw, int *first_kex_follows)
 static void
 kex_prop_free(char **proposal)
 {
-        int i;
+        u_int i;
 
         for (i = 0; i < PROPOSAL_MAX; i++)
                 xfree(proposal[i]);
@@ -150,7 +150,7 @@ kex_send_kexinit(Kex *kex)
 {
         u_int32_t rnd = 0;
         u_char *cookie;
-        int i;
+        u_int i;
 
         if (kex == NULL) {
                 error("kex_send_kexinit: no kex, cannot rekey");
@@ -183,8 +183,7 @@ void
 kex_input_kexinit(int type, u_int32_t seq, void *ctxt)
 {
         char *ptr;
-        int dlen;
-        int i;
+        u_int i, dlen;
         Kex *kex = (Kex *)ctxt;
 
         debug("SSH2_MSG_KEXINIT received");
@@ -343,9 +342,7 @@ kex_choose_conf(Kex *kex)
         char **my, **peer;
         char **cprop, **sprop;
         int nenc, nmac, ncomp;
-        int mode;
-        int ctos;                               /* direction: if true client-to-server */
-        int need;
+        u_int mode, ctos, need;
         int first_kex_follows, type;
 
         my   = kex_buf2prop(&kex->my, NULL);
@@ -405,15 +402,19 @@ kex_choose_conf(Kex *kex)
 }
 
 static u_char *
-derive_key(Kex *kex, int id, int need, u_char *hash, BIGNUM *shared_secret)
+derive_key(Kex *kex, int id, u_int need, u_char *hash, BIGNUM *shared_secret)
 {
         Buffer b;
         const EVP_MD *evp_md = EVP_sha1();
         EVP_MD_CTX md;
         char c = id;
-        int have;
+        u_int have;
         int mdsz = EVP_MD_size(evp_md);
-        u_char *digest = xmalloc(roundup(need, mdsz));
+        u_char *digest;
+        
+        if (mdsz < 0)
+                fatal("derive_key: mdsz < 0");
+        digest = xmalloc(roundup(need, mdsz));
 
         buffer_init(&b);
         buffer_put_bignum2(&b, shared_secret);
@@ -455,7 +456,7 @@ void
 kex_derive_keys(Kex *kex, u_char *hash, BIGNUM *shared_secret)
 {
         u_char *keys[NKEYS];
-        int i, mode, ctos;
+        u_int i, mode, ctos;
 
         for (i = 0; i < NKEYS; i++)
                 keys[i] = derive_key(kex, 'A'+i, kex->we_need, hash, shared_secret);
@@ -493,13 +494,13 @@ derive_ssh1_session_id(BIGNUM *host_modulus, BIGNUM *server_modulus,
         EVP_DigestInit(&md, evp_md);
 
         len = BN_num_bytes(host_modulus);
-        if (len < (512 / 8) || len > sizeof(nbuf))
+        if (len < (512 / 8) || (u_int)len > sizeof(nbuf))
                 fatal("%s: bad host modulus (len %d)", __func__, len);
         BN_bn2bin(host_modulus, nbuf);
         EVP_DigestUpdate(&md, nbuf, len);
 
         len = BN_num_bytes(server_modulus);
-        if (len < (512 / 8) || len > sizeof(nbuf))
+        if (len < (512 / 8) || (u_int)len > sizeof(nbuf))
                 fatal("%s: bad server modulus (len %d)", __func__, len);
         BN_bn2bin(server_modulus, nbuf);
         EVP_DigestUpdate(&md, nbuf, len);
@@ -518,7 +519,7 @@ derive_ssh1_session_id(BIGNUM *host_modulus, BIGNUM *server_modulus,
 void
 dump_digest(char *msg, u_char *digest, int len)
 {
-        int i;
+        u_int i;
 
         fprintf(stderr, "%s\n", msg);
         for (i = 0; i< len; i++) {
diff --git a/kex.h b/kex.h
index d9e9d6522..059d83cd5 100644
--- a/kex.h
+++ b/kex.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: kex.h,v 1.35 2004/06/13 12:53:24 djm Exp $    */
+/*      $OpenBSD: kex.h,v 1.36 2005/06/17 02:44:32 djm Exp $    */
 
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
@@ -83,9 +83,9 @@ struct Mac {
         char    *name;
         int     enabled;
         const EVP_MD    *md;
-        int     mac_len;
+        u_int   mac_len;
         u_char  *key;
-        int     key_len;
+        u_int   key_len;
 };
 struct Comp {
         int     type;
@@ -101,7 +101,7 @@ struct Kex {
         u_char  *session_id;
         u_int   session_id_len;
         Newkeys *newkeys[MODE_MAX];
-        int     we_need;
+        u_int   we_need;
         int     server;
         char    *name;
         int     hostkey_type;
diff --git a/key.c b/key.c
index e41930464..08c158b59 100644
--- a/key.c
+++ b/key.c
@@ -32,7 +32,7 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include "includes.h"
-RCSID("$OpenBSD: key.c,v 1.57 2004/10/29 23:57:05 djm Exp $");
+RCSID("$OpenBSD: key.c,v 1.58 2005/06/17 02:44:32 djm Exp $");
 
 #include <openssl/evp.h>
 
@@ -231,7 +231,7 @@ static char *
 key_fingerprint_hex(u_char *dgst_raw, u_int dgst_raw_len)
 {
         char *retval;
-        int i;
+        u_int i;
 
         retval = xmalloc(dgst_raw_len * 3 + 1);
         retval[0] = '\0';
diff --git a/mac.c b/mac.c
index 097f0b93b..2bda5a1b9 100644
--- a/mac.c
+++ b/mac.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: mac.c,v 1.6 2003/09/18 13:02:21 miod Exp $");
+RCSID("$OpenBSD: mac.c,v 1.7 2005/06/17 02:44:32 djm Exp $");
 
 #include <openssl/hmac.h>
 
@@ -51,12 +51,15 @@ struct {
 int
 mac_init(Mac *mac, char *name)
 {
-        int i;
+        int i, evp_len;
+
         for (i = 0; macs[i].name; i++) {
                 if (strcmp(name, macs[i].name) == 0) {
                         if (mac != NULL) {
                                 mac->md = (*macs[i].mdfunc)();
-                                mac->key_len = mac->mac_len = EVP_MD_size(mac->md);
+                                if ((evp_len = EVP_MD_size(mac->md)) <= 0)
+                                        fatal("mac %s len %d", name, evp_len);
+                                mac->key_len = mac->mac_len = (u_int)evp_len;
                                 if (macs[i].truncatebits != 0)
                                         mac->mac_len = macs[i].truncatebits/8;
                         }
@@ -77,7 +80,7 @@ mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)
 
         if (mac->key == NULL)
                 fatal("mac_compute: no key");
-        if ((u_int)mac->mac_len > sizeof(m))
+        if (mac->mac_len > sizeof(m))
                 fatal("mac_compute: mac too long");
         HMAC_Init(&c, mac->key, mac->key_len, mac->md);
         PUT_32BIT(b, seqno);
diff --git a/match.c b/match.c
index 3ddb62730..29fb7dab9 100644
--- a/match.c
+++ b/match.c
@@ -35,7 +35,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: match.c,v 1.19 2002/03/01 13:12:10 markus Exp $");
+RCSID("$OpenBSD: match.c,v 1.20 2005/06/17 02:44:32 djm Exp $");
 
 #include "match.h"
 #include "xmalloc.h"
@@ -254,7 +254,7 @@ match_list(const char *client, const char *server, u_int *next)
                                 ret = xstrdup(p);
                                 if (next != NULL)
                                         *next = (cp == NULL) ?
-                                            strlen(c) : cp - c;
+                                            strlen(c) : (u_int)(cp - c);
                                 xfree(c);
                                 xfree(s);
                                 return ret;
diff --git a/misc.c b/misc.c
index fc094f874..c5ca0ce38 100644
--- a/misc.c
+++ b/misc.c
@@ -24,7 +24,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: misc.c,v 1.31 2005/06/06 11:20:36 djm Exp $");
+RCSID("$OpenBSD: misc.c,v 1.32 2005/06/17 02:44:32 djm Exp $");
 
 #include "misc.h"
 #include "log.h"
@@ -386,7 +386,7 @@ tilde_expand_filename(const char *filename, uid_t uid)
         const char *path;
         char user[128], ret[MAXPATHLEN];
         struct passwd *pw;
-        int len;
+        u_int len, slash;
 
         if (*filename != '~')
                 return (xstrdup(filename));
@@ -394,10 +394,11 @@ tilde_expand_filename(const char *filename, uid_t uid)
 
         path = strchr(filename, '/');
         if (path != NULL && path > filename) {          /* ~user/path */
-                if (path - filename > sizeof(user) - 1)
+                slash = path - filename;
+                if (slash > sizeof(user) - 1)
                         fatal("tilde_expand_filename: ~username too long");
-                memcpy(user, filename, path - filename);
-                user[path - filename] = '\0';
+                memcpy(user, filename, slash);
+                user[slash] = '\0';
                 if ((pw = getpwnam(user)) == NULL)
                         fatal("tilde_expand_filename: No such user %s", user);
         } else if ((pw = getpwuid(uid)) == NULL)        /* ~/path */
@@ -435,7 +436,7 @@ percent_expand(const char *string, ...)
                 const char *key;
                 const char *repl;
         } keys[EXPAND_MAX_KEYS];
-        int num_keys, i, j;
+        u_int num_keys, i, j;
         char buf[4096];
         va_list ap;
 
diff --git a/packet.c b/packet.c
index 7c150fde7..d5b50f2f4 100644
--- a/packet.c
+++ b/packet.c
@@ -37,7 +37,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: packet.c,v 1.116 2004/10/20 11:48:53 markus Exp $");
+RCSID("$OpenBSD: packet.c,v 1.117 2005/06/17 02:44:32 djm Exp $");
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -992,7 +992,7 @@ packet_read_poll2(u_int32_t *seqnr_p)
         static u_int packet_length = 0;
         u_int padlen, need;
         u_char *macbuf, *cp, type;
-        int maclen, block_size;
+        u_int maclen, block_size;
         Enc *enc   = NULL;
         Mac *mac   = NULL;
         Comp *comp = NULL;
@@ -1229,9 +1229,9 @@ packet_get_bignum2(BIGNUM * value)
 }
 
 void *
-packet_get_raw(int *length_ptr)
+packet_get_raw(u_int *length_ptr)
 {
-        int bytes = buffer_len(&incoming_packet);
+        u_int bytes = buffer_len(&incoming_packet);
 
         if (length_ptr != NULL)
                 *length_ptr = bytes;
diff --git a/packet.h b/packet.h
index 37f82f2f6..1ab6d8572 100644
--- a/packet.h
+++ b/packet.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: packet.h,v 1.41 2004/05/11 19:01:43 deraadt Exp $     */
+/*      $OpenBSD: packet.h,v 1.42 2005/06/17 02:44:33 djm Exp $ */
 
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -52,7 +52,7 @@ u_int	 packet_get_char(void);
 u_int    packet_get_int(void);
 void     packet_get_bignum(BIGNUM * value);
 void     packet_get_bignum2(BIGNUM * value);
-void    *packet_get_raw(int *length_ptr);
+void    *packet_get_raw(u_int *length_ptr);
 void    *packet_get_string(u_int *length_ptr);
 void     packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
 void     packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
diff --git a/scp.c b/scp.c
index 9dc060e26..10c4b507c 100644
--- a/scp.c
+++ b/scp.c
@@ -71,7 +71,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: scp.c,v 1.123 2005/05/26 02:08:05 avsm Exp $");
+RCSID("$OpenBSD: scp.c,v 1.124 2005/06/17 02:44:33 djm Exp $");
 
 #include "xmalloc.h"
 #include "atomicio.h"
@@ -186,7 +186,7 @@ do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
 }
 
 typedef struct {
-        int cnt;
+        size_t cnt;
         char *buf;
 } BUF;
 
@@ -724,8 +724,8 @@ sink(int argc, char **argv)
         } wrerr;
         BUF *bp;
         off_t i;
-        size_t j;
-        int amt, count, exists, first, mask, mode, ofd, omode;
+        size_t j, count;
+        int amt, exists, first, mask, mode, ofd, omode;
         off_t size, statbytes;
         int setimes, targisdir, wrerrno = 0;
         char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
@@ -833,7 +833,7 @@ sink(int argc, char **argv)
                 }
                 if (targisdir) {
                         static char *namebuf;
-                        static int cursize;
+                        static size_t cursize;
                         size_t need;
 
                         need = strlen(targ) + strlen(cp) + 250;
diff --git a/servconf.c b/servconf.c
index ddb34f9b9..deec167be 100644
--- a/servconf.c
+++ b/servconf.c
@@ -10,7 +10,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: servconf.c,v 1.141 2005/05/16 15:30:51 markus Exp $");
+RCSID("$OpenBSD: servconf.c,v 1.142 2005/06/17 02:44:33 djm Exp $");
 
 #include "ssh.h"
 #include "log.h"
@@ -398,7 +398,7 @@ parse_token(const char *cp, const char *filename,
 static void
 add_listen_addr(ServerOptions *options, char *addr, u_short port)
 {
-        int i;
+        u_int i;
 
         if (options->num_ports == 0)
                 options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
@@ -438,9 +438,10 @@ process_server_config_line(ServerOptions *options, char *line,
     const char *filename, int linenum)
 {
         char *cp, **charptr, *arg, *p;
-        int *intptr, value, i, n;
+        int *intptr, value, n;
         ServerOpCodes opcode;
         u_short port;
+        u_int i;
 
         cp = line;
         arg = strdelim(&cp);
diff --git a/session.c b/session.c
index d931532db..a1dc6835a 100644
--- a/session.c
+++ b/session.c
@@ -33,7 +33,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: session.c,v 1.181 2004/12/23 17:35:48 markus Exp $");
+RCSID("$OpenBSD: session.c,v 1.182 2005/06/17 02:44:33 djm Exp $");
 
 #include "ssh.h"
 #include "ssh1.h"
@@ -1801,7 +1801,7 @@ session_subsystem_req(Session *s)
         u_int len;
         int success = 0;
         char *cmd, *subsys = packet_get_string(&len);
-        int i;
+        u_int i;
 
         packet_check_eom();
         logit("subsystem request for %.100s", subsys);
@@ -2107,7 +2107,7 @@ session_exit_message(Session *s, int status)
 void
 session_close(Session *s)
 {
-        int i;
+        u_int i;
 
         debug("session_close: session %d pid %ld", s->self, (long)s->pid);
         if (s->ttyfd != -1)
diff --git a/session.h b/session.h
index 48be5070c..92bd16573 100644
--- a/session.h
+++ b/session.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: session.h,v 1.23 2004/07/17 05:31:41 dtucker Exp $    */
+/*      $OpenBSD: session.h,v 1.24 2005/06/17 02:44:33 djm Exp $        */
 
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
@@ -50,7 +50,7 @@ struct Session {
         /* proto 2 */
         int     chanid;
         int     is_subsystem;
-        int     num_env;
+        u_int   num_env;
         struct {
                 char    *name;
                 char    *val;
diff --git a/sftp-client.c b/sftp-client.c
index 47297898a..ce15fc0a3 100644
--- a/sftp-client.c
+++ b/sftp-client.c
@@ -20,7 +20,7 @@
 /* XXX: copy between two remote sites */
 
 #include "includes.h"
-RCSID("$OpenBSD: sftp-client.c,v 1.54 2005/05/24 17:32:44 avsm Exp $");
+RCSID("$OpenBSD: sftp-client.c,v 1.55 2005/06/17 02:44:33 djm Exp $");
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -311,7 +311,7 @@ do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
     SFTP_DIRENT ***dir)
 {
         Buffer msg;
-        u_int type, id, handle_len, i, expected_id, ents = 0;
+        u_int count, type, id, handle_len, i, expected_id, ents = 0;
         char *handle;
 
         id = conn->msg_id++;
@@ -335,8 +335,6 @@ do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
         }
 
         for (; !interrupted;) {
-                int count;
-
                 id = expected_id = conn->msg_id++;
 
                 debug3("Sending SSH2_FXP_READDIR I:%u", id);
@@ -744,10 +742,10 @@ do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
         Attrib junk, *a;
         Buffer msg;
         char *handle;
-        int local_fd, status, num_req, max_req, write_error;
+        int local_fd, status, write_error;
         int read_error, write_errno;
         u_int64_t offset, size;
-        u_int handle_len, mode, type, id, buflen;
+        u_int handle_len, mode, type, id, buflen, num_req, max_req;
         off_t progress_counter;
         struct request {
                 u_int id;
diff --git a/sftp-server.c b/sftp-server.c
index e82280057..6870e7732 100644
--- a/sftp-server.c
+++ b/sftp-server.c
@@ -14,7 +14,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "includes.h"
-RCSID("$OpenBSD: sftp-server.c,v 1.47 2004/06/25 05:38:48 dtucker Exp $");
+RCSID("$OpenBSD: sftp-server.c,v 1.48 2005/06/17 02:44:33 djm Exp $");
 
 #include "buffer.h"
 #include "bufaux.h"
@@ -130,7 +130,7 @@ Handle	handles[100];
 static void
 handle_init(void)
 {
-        int i;
+        u_int i;
 
         for (i = 0; i < sizeof(handles)/sizeof(Handle); i++)
                 handles[i].use = HANDLE_UNUSED;
@@ -139,7 +139,7 @@ handle_init(void)
 static int
 handle_new(int use, const char *name, int fd, DIR *dirp)
 {
-        int i;
+        u_int i;
 
         for (i = 0; i < sizeof(handles)/sizeof(Handle); i++) {
                 if (handles[i].use == HANDLE_UNUSED) {
@@ -156,7 +156,7 @@ handle_new(int use, const char *name, int fd, DIR *dirp)
 static int
 handle_is_ok(int i, int type)
 {
-        return i >= 0 && i < sizeof(handles)/sizeof(Handle) &&
+        return i >= 0 && (u_int)i < sizeof(handles)/sizeof(Handle) &&
             handles[i].use == type;
 }
 
@@ -477,10 +477,10 @@ process_write(void)
                 } else {
 /* XXX ATOMICIO ? */
                         ret = write(fd, data, len);
-                        if (ret == -1) {
+                        if (ret < 0) {
                                 error("process_write: write failed");
                                 status = errno_to_portable(errno);
-                        } else if (ret == len) {
+                        } else if ((size_t)ret == len) {
                                 status = SSH2_FX_OK;
                         } else {
                                 logit("nothing at all written");
diff --git a/sftp.c b/sftp.c
index 16a6cf0c6..a77be84c6 100644
--- a/sftp.c
+++ b/sftp.c
@@ -16,7 +16,7 @@
 
 #include "includes.h"
 
-RCSID("$OpenBSD: sftp.c,v 1.63 2005/03/10 22:01:05 deraadt Exp $");
+RCSID("$OpenBSD: sftp.c,v 1.64 2005/06/17 02:44:33 djm Exp $");
 
 #ifdef USE_LIBEDIT
 #include <histedit.h>
@@ -404,7 +404,7 @@ get_pathname(const char **cpp, char **path)
 {
         const char *cp = *cpp, *end;
         char quot;
-        int i, j;
+        u_int i, j;
 
         cp += strspn(cp, WHITESPACE);
         if (!*cp) {
@@ -664,14 +664,15 @@ sdirent_comp(const void *aa, const void *bb)
 static int
 do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag)
 {
-        int n, c = 1, colspace = 0, columns = 1;
+        int n;
+        u_int c = 1, colspace = 0, columns = 1;
         SFTP_DIRENT **d;
 
         if ((n = do_readdir(conn, path, &d)) != 0)
                 return (n);
 
         if (!(lflag & LS_SHORT_VIEW)) {
-                int m = 0, width = 80;
+                u_int m = 0, width = 80;
                 struct winsize ws;
                 char *tmp;
 
@@ -747,7 +748,7 @@ do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path,
     int lflag)
 {
         glob_t g;
-        int i, c = 1, colspace = 0, columns = 1;
+        u_int i, c = 1, colspace = 0, columns = 1;
         Attrib *a = NULL;
 
         memset(&g, 0, sizeof(g));
@@ -783,7 +784,7 @@ do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path,
         }
 
         if (!(lflag & LS_SHORT_VIEW)) {
-                int m = 0, width = 80;
+                u_int m = 0, width = 80;
                 struct winsize ws;
 
                 /* Count entries for sort and find longest filename */
diff --git a/ssh-keyscan.c b/ssh-keyscan.c
index 7dffb8517..46f063687 100644
--- a/ssh-keyscan.c
+++ b/ssh-keyscan.c
@@ -7,7 +7,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: ssh-keyscan.c,v 1.54 2005/05/24 17:32:44 avsm Exp $");
+RCSID("$OpenBSD: ssh-keyscan.c,v 1.55 2005/06/17 02:44:33 djm Exp $");
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -166,7 +166,7 @@ Linebuf_lineno(Linebuf * lb)
 static char *
 Linebuf_getline(Linebuf * lb)
 {
-        int n = 0;
+        size_t n = 0;
         void *p;
 
         lb->lineno++;
@@ -493,10 +493,10 @@ conrecycle(int s)
 static void
 congreet(int s)
 {
-        int remote_major = 0, remote_minor = 0;
+        int n = 0, remote_major = 0, remote_minor = 0;
         char buf[256], *cp;
         char remote_version[sizeof buf];
-        size_t bufsiz, n = 0;
+        size_t bufsiz;
         con *c = &fdcon[s];
 
         bufsiz = sizeof(buf);
@@ -546,12 +546,12 @@ congreet(int s)
         n = snprintf(buf, sizeof buf, "SSH-%d.%d-OpenSSH-keyscan\r\n",
             c->c_keytype == KT_RSA1? PROTOCOL_MAJOR_1 : PROTOCOL_MAJOR_2,
             c->c_keytype == KT_RSA1? PROTOCOL_MINOR_1 : PROTOCOL_MINOR_2);
-        if (n == -1 || n >= sizeof buf) {
+        if (n < 0 || (size_t)n >= sizeof(buf)) {
                 error("snprintf: buffer too small");
                 confree(s);
                 return;
         }
-        if (atomicio(vwrite, s, buf, n) != n) {
+        if (atomicio(vwrite, s, buf, n) != (size_t)n) {
                 error("write (%s): %s", c->c_name, strerror(errno));
                 confree(s);
                 return;
diff --git a/ssh-rsa.c b/ssh-rsa.c
index 6e3be0a7e..eb422d07e 100644
--- a/ssh-rsa.c
+++ b/ssh-rsa.c
@@ -14,7 +14,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "includes.h"
-RCSID("$OpenBSD: ssh-rsa.c,v 1.31 2003/11/10 16:23:41 jakob Exp $");
+RCSID("$OpenBSD: ssh-rsa.c,v 1.32 2005/06/17 02:44:33 djm Exp $");
 
 #include <openssl/evp.h>
 #include <openssl/err.h>
@@ -238,7 +238,7 @@ openssh_RSA_verify(int type, u_char *hash, u_int hashlen,
                     ERR_error_string(ERR_get_error(), NULL));
                 goto done;
         }
-        if (len != hlen + oidlen) {
+        if (len < 0 || (u_int)len != hlen + oidlen) {
                 error("bad decrypted len: %d != %d + %d", len, hlen, oidlen);
                 goto done;
         }
diff --git a/sshconnect.c b/sshconnect.c
index 0bd351f6b..cbbe54821 100644
--- a/sshconnect.c
+++ b/sshconnect.c
@@ -13,7 +13,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshconnect.c,v 1.164 2005/06/06 11:20:36 djm Exp $");
+RCSID("$OpenBSD: sshconnect.c,v 1.165 2005/06/17 02:44:33 djm Exp $");
 
 #include <openssl/bn.h>
 
@@ -402,10 +402,11 @@ static void
 ssh_exchange_identification(void)
 {
         char buf[256], remote_version[256];     /* must be same size! */
-        int remote_major, remote_minor, i, mismatch;
+        int remote_major, remote_minor, mismatch;
         int connection_in = packet_get_connection_in();
         int connection_out = packet_get_connection_out();
         int minor1 = PROTOCOL_MINOR_1;
+        u_int i;
 
         /* Read other side's version identification. */
         for (;;) {
diff --git a/sshconnect1.c b/sshconnect1.c
index 6e2e31c02..bd05723c7 100644
--- a/sshconnect1.c
+++ b/sshconnect1.c
@@ -13,7 +13,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshconnect1.c,v 1.60 2004/07/28 09:40:29 markus Exp $");
+RCSID("$OpenBSD: sshconnect1.c,v 1.61 2005/06/17 02:44:33 djm Exp $");
 
 #include <openssl/bn.h>
 #include <openssl/md5.h>
@@ -162,7 +162,7 @@ respond_to_rsa_challenge(BIGNUM * challenge, RSA * prv)
         /* Compute the response. */
         /* The response is MD5 of decrypted challenge plus session id. */
         len = BN_num_bytes(challenge);
-        if (len <= 0 || len > sizeof(buf))
+        if (len <= 0 || (u_int)len > sizeof(buf))
                 packet_disconnect(
                     "respond_to_rsa_challenge: bad challenge length %d", len);
 
diff --git a/sshconnect2.c b/sshconnect2.c
index 68d56d020..60afd6d3d 100644
--- a/sshconnect2.c
+++ b/sshconnect2.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshconnect2.c,v 1.138 2004/06/13 12:53:24 djm Exp $");
+RCSID("$OpenBSD: sshconnect2.c,v 1.139 2005/06/17 02:44:33 djm Exp $");
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -482,7 +482,7 @@ userauth_gssapi(Authctxt *authctxt)
 {
         Gssctxt *gssctxt = NULL;
         static gss_OID_set gss_supported = NULL;
-        static int mech = 0;
+        static u_int mech = 0;
         OM_uint32 min;
         int ok = 0;
 
@@ -509,7 +509,8 @@ userauth_gssapi(Authctxt *authctxt)
                 }
         }
 
-        if (!ok) return 0;
+        if (!ok)
+                return 0;
 
         authctxt->methoddata=(void *)gssctxt;
 
diff --git a/sshd.c b/sshd.c
index ed4158801..b0d65575f 100644
--- a/sshd.c
+++ b/sshd.c
@@ -42,7 +42,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshd.c,v 1.310 2005/06/16 08:00:00 markus Exp $");
+RCSID("$OpenBSD: sshd.c,v 1.311 2005/06/17 02:44:33 djm Exp $");
 
 #include <openssl/dh.h>
 #include <openssl/bn.h>
@@ -358,7 +358,8 @@ key_regeneration_alarm(int sig)
 static void
 sshd_exchange_identification(int sock_in, int sock_out)
 {
-        int i, mismatch;
+        u_int i;
+        int mismatch;
         int remote_major, remote_minor;
         int major, minor;
         char *s;
@@ -1900,7 +1901,7 @@ do_ssh1_kex(void)
         if (!rsafail) {
                 BN_mask_bits(session_key_int, sizeof(session_key) * 8);
                 len = BN_num_bytes(session_key_int);
-                if (len < 0 || len > sizeof(session_key)) {
+                if (len < 0 || (u_int)len > sizeof(session_key)) {
                         error("do_connection: bad session key len from %s: "
                             "session_key_int %d > sizeof(session_key) %lu",
                             get_remote_ipaddr(), len, (u_long)sizeof(session_key));