Initial revision

passwd.c

@@ -0,0 +1,164 @@
+
+/*--------------------------------------------------------------------------
+
+	A little bit of password management
+	
+
+
+	Mark Koennecke,    October 1996
+
+	Copyright:
+
+	Labor fuer Neutronenstreuung
+	Paul Scherrer Institut
+	CH-5423 Villigen-PSI
+
+
+        The authors hereby grant permission to use, copy, modify, distribute,
+        and license this software and its documentation for any purpose, provided
+        that existing copyright notices are retained in all copies and that this
+        notice is included verbatim in any distributions. No written agreement,
+        license, or royalty fee is required for any of the authorized uses.
+        Modifications to this software may be copyrighted by their authors
+        and need not follow the licensing terms described here, provided that
+        the new terms are clearly indicated on the first page of each file where
+        they apply.
+
+        IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
+        FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+        ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
+        DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
+        POSSIBILITY OF SUCH DAMAGE.
+
+        THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
+        INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+        FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE
+        IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
+        NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
+        MODIFICATIONS.
+-----------------------------------------------------------------------------*/
+#include "fortify.h"
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include "passwd.h"
+#include "splitter.h"
+
+typedef struct __PENTRY
+                       {
+                          char *name;
+                          char *passwd;
+                          int iCode;
+                          struct __PENTRY *pNext;
+                        } Pentry;
+                        
+/* -------------------------- THE DATABASE --------------------------------*/
+	static Pentry *pPasswords = NULL;
+	
+/*=========================================================================*/
+	void AddUser(char *name, char *passwd, int iCode)
+	{
+           Pentry *pNew = NULL;
+
+	   assert(name);
+	   assert(passwd);
+	   
+	   pNew = (Pentry *)malloc(sizeof(Pentry));
+	   assert(pNew);
+
+	   pNew->name = NULL;
+	   pNew->passwd = NULL;
+	   pNew->name = strdup(name);
+	   pNew->passwd = strdup(passwd);
+	   pNew->iCode = iCode;
+	   pNew->pNext = pPasswords;
+	   pPasswords = pNew;
+	}
+/*--------------------------------------------------------------------------*/
+        int IsValidUser(char *name, char *password)
+        {
+          int iRes = -10;
+          Pentry *pCurrent = NULL;
+          
+          assert(pPasswords);
+
+          if( (name == NULL) || (password == NULL) )
+          {
+          	return iRes;
+          }          
+          pCurrent = pPasswords;
+          while(pCurrent)
+          {
+             if(strcmp(pCurrent->name,name) == 0)
+             {
+                if(strcmp(pCurrent->passwd,password) == 0)
+                {
+                  return pCurrent->iCode;
+                }
+             }
+             pCurrent = pCurrent->pNext;
+          }
+          return iRes;
+        }
+/* --------------------------------------------------------------------------*/
+	void KillPasswd(void)
+	{
+	   Pentry *pCurrent, *pTemp;
+	   
+	   pCurrent = pPasswords;
+	   while(pCurrent)
+	   {
+	     pTemp = pCurrent->pNext;
+	     if(pCurrent->name)
+	          free(pCurrent->name);
+	     if(pCurrent->passwd)
+	          free(pCurrent->passwd);
+	     free(pCurrent);
+	     pCurrent = pTemp;
+	   }
+	   pPasswords = NULL;
+	}
+/*-------------------------------------------------------------------------*/
+  int InitPasswd(char *filename)
+  {
+    FILE *fp = NULL;
+    char pLine[256];
+    TokenList *pList = NULL;
+    int iRes = 0;
+      
+    assert(filename);
+    fp = fopen(filename,"r");
+    if(!fp)
+       return 0; 
+    
+    while((int)fgets(pLine,255,fp) != EOF)
+    {
+       if(feof(fp))
+         break;
+         
+       pList = SplitText(pLine);
+       if( (!pList) || (!pList->pNext) || (!pList->pNext->pNext) )
+       {
+         printf("Invalid Passwd Entry ::\n %s \n",pLine);
+         continue;
+       }
+       else
+       {
+         if(pList->pNext->pNext->Type != eInt)
+         {
+           continue;
+         }
+         else
+         {
+           AddUser(pList->text, pList->pNext->text,
+                   pList->pNext->pNext->iVal);
+           iRes = 1;
+         }
+       }
+       DeleteTokenList(pList);
+       pList = NULL;
+    }
+    fclose(fp);
+    return iRes;
+  }