Initial

misc.c

@@ -0,0 +1,162 @@
+/*
+ * UserServer/0.1
+ * misc.c - Miscellanous functions
+ *
+ * Copyright (C) 2002 Gergely Polonkai
+ * Copyright (C) 2002-2006 P-Team Programmers' Group
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have recieved a copy of the GNU General Public License
+ * along with this program; if not, write to Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA, 02111-1307, USA.
+ *
+ * GNU GPL is in doc/COPYING
+ */
+
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <pwd.h>
+
+#include "userv.h"
+#include "functions.h"
+
+char *trim(char *text, char *spc) {
+  int start, end;
+  char *b;
+
+  if (spc) {
+    for (start = 0; start < strlen(text); start++)
+      if (!strchr(spc, *(text + start)))
+        break;
+    for (end = strlen(text) - 1; end >= 0; end--)
+      if (!strchr(spc, *(text + end)))
+        break;
+  } else {
+    for (start = 0; start < strlen(text); start++)
+      if (!isspace(*(text + start)))
+        break;
+    for (end = strlen(text) - 1; end >= 0; end--)
+      if (!isspace(*(text + end)))
+        break;
+  }
+  if (end == -1)
+    return NULL;
+
+  if ((b = malloc(end - start + 2)) == NULL)
+    return NULL;
+  memset(b, 0, end - start + 2);
+
+  strncpy(b, text + start, end - start + 1);
+  
+  return b;
+}
+
+int
+valid_ip(char *addr) {
+  int i, np = 0, nn = 0;
+
+  if (!addr)
+    return 0;
+
+  if (strlen(addr) > 15)
+    return 0;
+
+  if (!isdigit(addr[0]))
+    return 0;
+
+  for (i = 0; i < strlen(addr); i++) {
+    if (*(addr + i) == '.')
+      np++;
+    if ((*(addr + i) != '.') && (!isdigit(*(addr + i))))
+      return 0;
+  }
+
+  if (np != 3)
+    return 0;
+
+  np = 0;
+
+  for (i = 0; i < strlen(addr); i++) {
+    if (*(addr + i) == '.') {
+      if (np)
+        return 0;
+      np = 1;
+      nn = 0;
+    }
+    if (*(addr + i) != '.') {
+      np = 0;
+      nn++;
+      if (nn == 4)
+        return 0;
+    }
+    if (i > 0)
+      if ((*(addr + i - 1) == '0') && (*(addr + i) != '.'))
+        return 0;
+  }
+
+  if (strcmp(addr, "0.0.0.0") == 0)
+    return 0;
+  
+  if (strcmp(addr, "255.255.255.255") == 0)
+    return 0;
+
+  return 1;
+}
+
+int
+valid_user(char *name) {
+  if (getpwnam(name) == NULL)
+    return 0;
+  return 1;
+}
+
+int
+ip_allowed(char *IP) {
+  CST *temp = caddr;
+  while (temp) {
+    if (strcmp(IP, temp->IP) == 0)
+      return 1;
+    temp = temp->next;
+  }
+  return 0;
+}
+
+int
+user_allowed(char *uname) {
+  UST *temp = auser;
+
+  if (strcmp(uname, "root") == 0)
+    return 0;
+
+  while (temp) {
+    if (strcmp(uname, temp->uname) == 0)
+      return 1;
+    temp = temp->next;
+  }
+  return 0;
+}
+
+int
+IsNum(char *str) {
+  int i;
+
+  if (!str)
+    return 0;
+
+  for (i = 0; i < strlen(str); i++)
+    if (!isdigit(*(str + i)))
+      return 0;
+  
+  return 1;
+}
+