examples: Reformat knownhosts

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>

examples/knownhosts.c

@@ -32,82 +32,85 @@ clients must be made or how a client should react.
 #define strncasecmp _strnicmp
 #endif
 
-int verify_knownhost(ssh_session session){
-  enum ssh_known_hosts_e state;
-  char buf[10];
-  unsigned char *hash = NULL;
-  size_t hlen;
-  ssh_key srv_pubkey;
-  int rc;
+int verify_knownhost(ssh_session session)
+{
+    enum ssh_known_hosts_e state;
+    char buf[10];
+    unsigned char *hash = NULL;
+    size_t hlen;
+    ssh_key srv_pubkey;
+    int rc;
 
-  rc = ssh_get_server_publickey(session, &srv_pubkey);
-  if (rc < 0) {
-      return -1;
-  }
+    rc = ssh_get_server_publickey(session, &srv_pubkey);
+    if (rc < 0) {
+        return -1;
+    }
 
-  rc = ssh_get_publickey_hash(srv_pubkey,
-                              SSH_PUBLICKEY_HASH_SHA256,
-                              &hash,
-                              &hlen);
-  ssh_key_free(srv_pubkey);
-  if (rc < 0) {
-      return -1;
-  }
+    rc = ssh_get_publickey_hash(srv_pubkey,
+                                SSH_PUBLICKEY_HASH_SHA256,
+                                &hash,
+                                &hlen);
+    ssh_key_free(srv_pubkey);
+    if (rc < 0) {
+        return -1;
+    }
 
-  state = ssh_session_is_known_server(session);
+    state = ssh_session_is_known_server(session);
 
-  switch(state){
-    case SSH_KNOWN_HOSTS_OK:
-      break; /* ok */
+    switch(state) {
     case SSH_KNOWN_HOSTS_CHANGED:
-      fprintf(stderr,"Host key for server changed : server's one is now :\n");
-      ssh_print_hash(SSH_PUBLICKEY_HASH_SHA256, hash, hlen);
-      ssh_clean_pubkey_hash(&hash);
-      fprintf(stderr,"For security reason, connection will be stopped\n");
-      return -1;
+        fprintf(stderr,"Host key for server changed : server's one is now :\n");
+        ssh_print_hash(SSH_PUBLICKEY_HASH_SHA256, hash, hlen);
+        ssh_clean_pubkey_hash(&hash);
+        fprintf(stderr,"For security reason, connection will be stopped\n");
+        return -1;
     case SSH_KNOWN_HOSTS_OTHER:
-      fprintf(stderr,"The host key for this server was not found but an other type of key exists.\n");
-      fprintf(stderr,"An attacker might change the default server key to confuse your client"
-          "into thinking the key does not exist\n"
-          "We advise you to rerun the client with -d or -r for more safety.\n");
-      return -1;
+        fprintf(stderr,"The host key for this server was not found but an other type of key exists.\n");
+        fprintf(stderr,"An attacker might change the default server key to confuse your client"
+                "into thinking the key does not exist\n"
+                "We advise you to rerun the client with -d or -r for more safety.\n");
+        return -1;
     case SSH_KNOWN_HOSTS_NOT_FOUND:
-      fprintf(stderr,"Could not find known host file. If you accept the host key here,\n");
-      fprintf(stderr,"the file will be automatically created.\n");
-      /* fallback to SSH_SERVER_NOT_KNOWN behavior */
-      FALL_THROUGH;
+        fprintf(stderr,"Could not find known host file. If you accept the host key here,\n");
+        fprintf(stderr,"the file will be automatically created.\n");
+        /* fallback to SSH_SERVER_NOT_KNOWN behavior */
+        FALL_THROUGH;
     case SSH_SERVER_NOT_KNOWN:
-      fprintf(stderr,
-              "The server is unknown. Do you trust the host key (yes/no)?\n");
-      ssh_print_hash(SSH_PUBLICKEY_HASH_SHA256, hash, hlen);
+        fprintf(stderr,
+                "The server is unknown. Do you trust the host key (yes/no)?\n");
+        ssh_print_hash(SSH_PUBLICKEY_HASH_SHA256, hash, hlen);
 
-      if (fgets(buf, sizeof(buf), stdin) == NULL) {
-	    ssh_clean_pubkey_hash(&hash);
-        return -1;
-      }
-      if(strncasecmp(buf,"yes",3)!=0){
-	    ssh_clean_pubkey_hash(&hash);
-        return -1;
-      }
-      fprintf(stderr,"This new key will be written on disk for further usage. do you agree ?\n");
-      if (fgets(buf, sizeof(buf), stdin) == NULL) {
-	    ssh_clean_pubkey_hash(&hash);
-        return -1;
-      }
-      if(strncasecmp(buf,"yes",3)==0){
-        if (ssh_write_knownhost(session) < 0) {
-          ssh_clean_pubkey_hash(&hash);
-          fprintf(stderr, "error %s\n", strerror(errno));
-          return -1;
+        if (fgets(buf, sizeof(buf), stdin) == NULL) {
+            ssh_clean_pubkey_hash(&hash);
+            return -1;
+        }
+        if(strncasecmp(buf,"yes",3)!=0){
+            ssh_clean_pubkey_hash(&hash);
+            return -1;
+        }
+        fprintf(stderr,"This new key will be written on disk for further usage. do you agree ?\n");
+        if (fgets(buf, sizeof(buf), stdin) == NULL) {
+            ssh_clean_pubkey_hash(&hash);
+            return -1;
+        }
+        if(strncasecmp(buf,"yes",3)==0){
+            if (ssh_write_knownhost(session) < 0) {
+                ssh_clean_pubkey_hash(&hash);
+                fprintf(stderr, "error %s\n", strerror(errno));
+                return -1;
+            }
         }
-      }
 
-      break;
+        break;
     case SSH_KNOWN_HOSTS_ERROR:
-      ssh_clean_pubkey_hash(&hash);
-      fprintf(stderr,"%s",ssh_get_error(session));
-      return -1;
-  }
-  ssh_clean_pubkey_hash(&hash);
-  return 0;
+        ssh_clean_pubkey_hash(&hash);
+        fprintf(stderr,"%s",ssh_get_error(session));
+        return -1;
+    case SSH_KNOWN_HOSTS_OK:
+        break; /* ok */
+    }
+
+    ssh_clean_pubkey_hash(&hash);
+
+    return 0;
 }