+++ /dev/null
-/*
- * OpenDispense 2
- * UCC (University [of WA] Computer Club) Electronic Accounting System
- * - Cokebank (Basic Version)
- *
- * bank.c - Actual bank database
- *
- * This file is licenced under the 3-clause BSD Licence. See the file COPYING
- * for full details.
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-#include <pwd.h>
-#include <grp.h>
-#include "common.h"
-
-#define USE_UNIX_GROUPS 1
-
-// === PROTOTYPES ===
-static int GetUnixID(const char *Username);
-
-// === GLOBALS ===
-tUser *gaBank_Users;
- int giBank_NumUsers;
-FILE *gBank_File;
-
-// === CODE ===
-static int Bank_int_WriteEntry(int ID)
-{
- if( ID < 0 || ID >= giBank_NumUsers ) {
- return -1;
- }
-
- // Commit to file
- fseek(gBank_File, ID*sizeof(gaBank_Users[0]), SEEK_SET);
- fwrite(&gaBank_Users[ID], sizeof(gaBank_Users[0]), 1, gBank_File);
-
- return 0;
-}
-
-int Bank_GetUserByName(const char *Username)
-{
- int i, uid;
-
- uid = GetUnixID(Username);
-
- // Expensive search :(
- for( i = 0; i < giBank_NumUsers; i ++ )
- {
- if( gaBank_Users[i].UnixID == uid )
- return i;
- }
-
- return -1;
-}
-
-int Bank_GetUserBalance(int ID)
-{
- if( ID < 0 || ID >= giBank_NumUsers )
- return INT_MIN;
-
- return gaBank_Users[ID].Balance;
-}
-
-int Bank_GetUserFlags(int ID)
-{
- if( ID < 0 || ID >= giBank_NumUsers )
- return -1;
-
- // root
- if( gaBank_Users[ID].UnixID == 0 ) {
- gaBank_Users[ID].Flags |= USER_FLAG_WHEEL|USER_FLAG_COKE;
- }
-
- #if USE_UNIX_GROUPS
- // TODO: Implement checking the PAM groups and status instead, then
- // fall back on the database. (and update if there is a difference)
- if( gaBank_Users[ID].UnixID > 0 )
- {
- struct passwd *pwd;
- struct group *grp;
- int i;
-
- // Get username
- pwd = getpwuid( gaBank_Users[ID].UnixID );
-
- // Check for additions to the "coke" group
- grp = getgrnam("coke");
- if( grp ) {
- for( i = 0; grp->gr_mem[i]; i ++ )
- {
- if( strcmp(grp->gr_mem[i], pwd->pw_name) == 0 ) {
- gaBank_Users[ID].Flags |= USER_FLAG_COKE;
- break ;
- }
- }
- }
-
- // Check for additions to the "wheel" group
- grp = getgrnam("wheel");
- if( grp ) {
- for( i = 0; grp->gr_mem[i]; i ++ )
- {
- if( strcmp(grp->gr_mem[i], pwd->pw_name) == 0 ) {
- gaBank_Users[ID].Flags |= USER_FLAG_WHEEL;
- break ;
- }
- }
- }
- }
- #endif
-
- return gaBank_Users[ID].Flags;
-}
-
-int Bank_SetUserFlags(int ID, int Mask, int Value)
-{
- // Sanity
- if( ID < 0 || ID >= giBank_NumUsers )
- return -1;
-
- // Silently ignore changes to root and meta accounts
- if( gaBank_Users[ID].UnixID <= 0 ) return 0;
-
- gaBank_Users[ID].Flags &= ~Mask;
- gaBank_Users[ID].Flags |= Value;
-
- Bank_int_WriteEntry(ID);
-
- return 0;
-}
-
-int Bank_AlterUserBalance(int ID, int Delta)
-{
- // Sanity
- if( ID < 0 || ID >= giBank_NumUsers )
- return -1;
-
- // Update
- gaBank_Users[ID].Balance += Delta;
-
- Bank_int_WriteEntry(ID);
-
- return 0;
-}
-
-int Bank_GetMinAllowedBalance(int ID)
-{
- int flags;
- if( ID < 0 || ID >= giBank_NumUsers )
- return 0;
-
- flags = Bank_GetUserFlags(ID);
-
- // Internal accounts have no limit
- if( (flags & USER_FLAG_INTERNAL) )
- return INT_MIN;
-
- // Wheel is allowed to go to -$100
- if( (flags & USER_FLAG_WHEEL) )
- return -10000;
-
- // Coke is allowed to go to -$20
- if( (flags & USER_FLAG_COKE) )
- return -2000;
-
- // For everyone else, no negative
- return 0;
-}
-
-/**
- * \brief Create a new user in our database
- */
-int Bank_AddUser(const char *Username)
-{
- void *tmp;
- int uid = GetUnixID(Username);
-
- // Can has moar space plz?
- tmp = realloc(gaBank_Users, (giBank_NumUsers+1)*sizeof(gaBank_Users[0]));
- if( !tmp ) return -1;
- gaBank_Users = tmp;
-
- // Crete new user
- gaBank_Users[giBank_NumUsers].UnixID = uid;
- gaBank_Users[giBank_NumUsers].Balance = 0;
- gaBank_Users[giBank_NumUsers].Flags = 0;
-
- if( strcmp(Username, COKEBANK_DEBT_ACCT) == 0 ) {
- gaBank_Users[giBank_NumUsers].Flags = USER_FLAG_INTERNAL;
- }
- else if( strcmp(Username, COKEBANK_SALES_ACCT) == 0 ) {
- gaBank_Users[giBank_NumUsers].Flags = USER_FLAG_INTERNAL;
- }
- else if( strcmp(Username, "root") == 0 ) {
- gaBank_Users[giBank_NumUsers].Flags = USER_FLAG_WHEEL|USER_FLAG_COKE;
- }
-
- // Increment count
- giBank_NumUsers ++;
-
- Bank_int_WriteEntry(giBank_NumUsers - 1);
-
- return 0;
-}
-
-// ---
-// Unix user dependent code
-// TODO: Modify to keep its own list of usernames
-// ---
-char *Bank_GetUserName(int ID)
-{
- struct passwd *pwd;
-
- if( ID < 0 || ID >= giBank_NumUsers )
- return NULL;
-
- if( gaBank_Users[ID].UnixID == -1 )
- return strdup(COKEBANK_SALES_ACCT);
-
- if( gaBank_Users[ID].UnixID == -2 )
- return strdup(COKEBANK_DEBT_ACCT);
-
- pwd = getpwuid(gaBank_Users[ID].UnixID);
- if( !pwd ) return NULL;
-
- return strdup(pwd->pw_name);
-}
-
-static int GetUnixID(const char *Username)
-{
- int uid;
-
- if( strcmp(Username, COKEBANK_SALES_ACCT) == 0 ) { // Pseudo account that sales are made into
- uid = -1;
- }
- else if( strcmp(Username, COKEBANK_DEBT_ACCT) == 0 ) { // Pseudo acount that money is added from
- uid = -2;
- }
- else {
- struct passwd *pwd;
- // Get user ID
- pwd = getpwnam(Username);
- if( !pwd ) return -1;
- uid = pwd->pw_uid;
- }
- return uid;
-}
git.ucc.asn.au / tpg / opendispense2.git / blobdiff
UCC git Repository :: git.ucc.asn.au