From 0b5755205d388b5704c040c21285c0b7ab58825e Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@ucc.asn.au>
Date: Wed, 11 Jul 2012 18:51:55 +0800
Subject: [PATCH] Client - Broke the client out into separate files
- Added help to the ncurses display
---
src/client/Makefile | 2 +-
src/client/common.h | 92 +++
src/client/main.c | 1578 +----------------------------------------
src/client/menu.c | 407 +++++++++++
src/client/protocol.c | 1161 ++++++++++++++++++++++++++++++
5 files changed, 1664 insertions(+), 1576 deletions(-)
create mode 100644 src/client/common.h
create mode 100644 src/client/menu.c
create mode 100644 src/client/protocol.c
diff --git a/src/client/Makefile b/src/client/Makefile
index e490549..8c1cda4 100644
--- a/src/client/Makefile
+++ b/src/client/Makefile
@@ -4,7 +4,7 @@ LDFLAGS := -g -lncurses
# -lssl
BIN := ../../dispense
-OBJ := main.o
+OBJ := main.o protocol.o menu.o
DEPFILES := $(OBJ:%.o=%.d)
diff --git a/src/client/common.h b/src/client/common.h
new file mode 100644
index 0000000..4c592ff
--- /dev/null
+++ b/src/client/common.h
@@ -0,0 +1,92 @@
+/*
+ * OpenDispense 2
+ * UCC (University [of WA] Computer Club) Electronic Accounting System
+ * - Dispense Client
+ *
+ * common.h
+ * - Shared definitions
+ *
+ * This file is licenced under the 3-clause BSD Licence. See the file
+ * COPYING for full details.
+ */
+#ifndef _CLIENT__COMMON_H_
+#define _CLIENT__COMMON_H_
+
+#include <regex.h>
+
+typedef struct sItem {
+ char *Type;
+ int ID;
+ int Status; // 0: Availiable, 1: Sold out, -1: Error
+ char *Desc;
+ int Price;
+} tItem;
+
+enum eUI_Modes
+{
+ UI_MODE_BASIC, // Non-NCurses
+ UI_MODE_STANDARD,
+ UI_MODE_DRINKSONLY,
+ UI_MODE_ALL,
+ NUM_UI_MODES
+};
+
+enum eReturnValues
+{
+ RV_SUCCESS,
+ RV_BAD_ITEM,
+ RV_INVALID_USER,
+ RV_PERMISSIONS,
+ RV_ARGUMENTS,
+ RV_BALANCE,
+ RV_SERVER_ERROR, // Generic for 5xx codes
+ RV_UNKNOWN_ERROR = -1,
+ RV_SOCKET_ERROR = -2,
+ RV_UNKNOWN_RESPONSE = -3,
+};
+
+extern regex_t gArrayRegex;
+extern regex_t gItemRegex;
+extern regex_t gSaltRegex;
+extern regex_t gUserInfoRegex;
+extern regex_t gUserItemIdentRegex;
+
+extern int gbDryRun;
+extern int gbDisallowSelectWithoutBalance;
+extern int giMinimumBalance;
+extern int giMaximumBalance;
+extern enum eUI_Modes giUIMode;
+
+extern int gbIsAuthenticated;
+extern char *gsEffectiveUser;
+extern char *gsUserName;
+extern int giUserBalance;
+extern char *gsUserFlags;
+
+extern int giNumItems;
+extern tItem *gaItems;
+
+extern int RunRegex(regex_t *regex, const char *str, int nMatches, regmatch_t *matches, const char *errmsg);
+
+extern int ShowNCursesUI(void);
+
+extern int OpenConnection(const char *Host, int Port);
+extern int Authenticate(int Socket);
+extern int GetUserBalance(int Socket);
+extern void PopulateItemList(int Socket);
+extern int Dispense_ItemInfo(int Socket, const char *Type, int ID);
+extern int DispenseItem(int Socket, const char *Type, int ID);
+extern int Dispense_AlterBalance(int Socket, const char *Username, int Ammount, const char *Reason);
+extern int Dispense_SetBalance(int Socket, const char *Username, int Balance, const char *Reason);
+extern int Dispense_Give(int Socket, const char *Username, int Ammount, const char *Reason);
+extern int Dispense_Refund(int Socket, const char *Username, const char *Item, int PriceOverride);
+extern int Dispense_Donate(int Socket, int Ammount, const char *Reason);
+extern int Dispense_EnumUsers(int Socket);
+extern int Dispense_ShowUser(int Socket, const char *Username);
+extern void _PrintUserLine(const char *Line);
+extern int Dispense_AddUser(int Socket, const char *Username);
+extern int Dispense_SetUserType(int Socket, const char *Username, const char *TypeString, const char *Reason);
+extern int Dispense_SetItem(int Socket, const char *Type, int ID, int NewPrice, const char *NewName);
+
+#endif
+
diff --git a/src/client/main.c b/src/client/main.c
index 708a5d2..444ab34 100644
--- a/src/client/main.c
+++ b/src/client/main.c
@@ -12,18 +12,9 @@
#include <stdio.h>
#include <string.h>
#include <ctype.h> // isspace
-#include <stdarg.h>
-#include <regex.h>
-#include <ncurses.h>
-#include <limits.h>
-
#include <unistd.h> // close
-#include <netdb.h> // gethostbyname
-#include <pwd.h> // getpwuids
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-//#include <openssl/sha.h> // SHA1
+#include <limits.h> // INT_MIN/INT_MAX
+#include "common.h"
#define USE_NCURSES_INTERFACE 0
#define DEBUG_TRACE_SERVER 0
@@ -32,66 +23,13 @@
#define MAX_TXT_ARGS 5 // Maximum number of textual arguments (including command)
#define DISPENSE_MULTIPLE_MAX 20 // Maximum argument to -c
-enum eUI_Modes
-{
- UI_MODE_BASIC, // Non-NCurses
- UI_MODE_STANDARD,
- UI_MODE_DRINKSONLY,
- UI_MODE_ALL,
- NUM_UI_MODES
-};
-
-enum eReturnValues
-{
- RV_SUCCESS,
- RV_BAD_ITEM,
- RV_INVALID_USER,
- RV_PERMISSIONS,
- RV_ARGUMENTS,
- RV_BALANCE,
- RV_SERVER_ERROR, // Generic for 5xx codes
- RV_UNKNOWN_ERROR = -1,
- RV_SOCKET_ERROR = -2,
- RV_UNKNOWN_RESPONSE = -3,
-};
-
// === TYPES ===
-typedef struct sItem {
- char *Type;
- int ID;
- int Status; // 0: Availiable, 1: Sold out, -1: Error
- char *Desc;
- int Price;
-} tItem;
// === PROTOTYPES ===
void ShowUsage(void);
int main(int argc, char *argv[]);
-// --- GUI ---
- int ShowNCursesUI(void);
- int ShowItemAt(int Row, int Col, int Width, int Index, int bHilighted);
-void PrintAlign(int Row, int Col, int Width, const char *Left, char Pad1, const char *Mid, char Pad2, const char *Right, ...);
// --- Coke Server Communication ---
- int OpenConnection(const char *Host, int Port);
- int Authenticate(int Socket);
- int GetUserBalance(int Socket);
-void PopulateItemList(int Socket);
- int Dispense_ItemInfo(int Socket, const char *Type, int ID);
- int DispenseItem(int Socket, const char *Type, int ID);
- int Dispense_AlterBalance(int Socket, const char *Username, int Ammount, const char *Reason);
- int Dispense_SetBalance(int Socket, const char *Username, int Balance, const char *Reason);
- int Dispense_Give(int Socket, const char *Username, int Ammount, const char *Reason);
- int Dispense_Refund(int Socket, const char *Username, const char *Item, int PriceOverride);
- int Dispense_Donate(int Socket, int Ammount, const char *Reason);
- int Dispense_EnumUsers(int Socket);
- int Dispense_ShowUser(int Socket, const char *Username);
-void _PrintUserLine(const char *Line);
- int Dispense_AddUser(int Socket, const char *Username);
- int Dispense_SetUserType(int Socket, const char *Username, const char *TypeString, const char *Reason);
- int Dispense_SetItem(int Socket, const char *Type, int ID, int NewPrice, const char *NewName);
// --- Helpers ---
-char *ReadLine(int Socket);
- int sendf(int Socket, const char *Format, ...);
char *trim(char *string);
int RunRegex(regex_t *regex, const char *string, int nMatches, regmatch_t *matches, const char *errorMessage);
void CompileRegex(regex_t *regex, const char *pattern, int flags);
@@ -108,7 +46,7 @@ regex_t gArrayRegex, gItemRegex, gSaltRegex, gUserInfoRegex, gUserItemIdentRegex
char *gsItemPattern; //!< Item pattern
char *gsEffectiveUser; //!< '-u' Dispense as another user
- int giUIMode = UI_MODE_STANDARD;
+enum eUI_Modes giUIMode = UI_MODE_STANDARD;
int gbDryRun = 0; //!< '-n' Read-only
int gbDisallowSelectWithoutBalance = 1; //!< Don't allow items to be hilighted if not affordable
@@ -882,1519 +820,9 @@ int main(int argc, char *argv[])
return ret;
}
-// -------------------
-// --- NCurses GUI ---
-// -------------------
-/**
- * \brief Render the NCurses UI
- */
-int ShowNCursesUI(void)
-{
- int ch;
- int i, times;
- int xBase, yBase;
- const int displayMinWidth = 50;
- char *titleString = "Dispense";
- int items_in_view;
- int maxItemIndex;
- int itemBase = 0;
- int currentItem;
- int ret = -2; // -2: Used for marking "no return yet"
-
- char balance_str[5+1+2+1]; // If $9999.99 is too little, something's wrong
- char *username;
- struct passwd *pwd;
-
- int height, width;
-
- void _ItemDown(void)
- {
- currentItem ++;
- // Skip over spacers
- while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
- currentItem ++;
-
- if( currentItem >= maxItemIndex ) {
- currentItem = 0;
- // Skip over spacers
- while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
- currentItem ++;
- }
- }
-
- void _ItemUp(void)
- {
- currentItem --;
- // Skip over spacers
- while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
- currentItem --;
-
- if( currentItem < 0 ) {
- currentItem = maxItemIndex - 1;
- // Skip over spacers
- while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
- currentItem --;
- }
- }
-
- // Get Username
- if( gsEffectiveUser )
- username = gsEffectiveUser;
- else {
- pwd = getpwuid( getuid() );
- username = pwd->pw_name;
- }
- // Get balance
- snprintf(balance_str, sizeof(balance_str), "$%i.%02i", giUserBalance/100, abs(giUserBalance)%100);
-
- // Enter curses mode
- initscr();
- cbreak(); noecho();
-
- // Get max index
- maxItemIndex = ShowItemAt(0, 0, 0, -1, 0);
- // Get item count per screen
- // - 6: randomly chosen (Need at least 3)
- items_in_view = LINES - 6;
- if( items_in_view > maxItemIndex )
- items_in_view = maxItemIndex;
- // Get first index
- currentItem = 0;
- while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
- currentItem ++;
-
-
- // Get dimensions
- height = items_in_view + 3;
- width = displayMinWidth;
-
- // Get positions
- xBase = COLS/2 - width/2;
- yBase = LINES/2 - height/2;
-
- for( ;; )
- {
- // Header
- PrintAlign(yBase, xBase, width, "/", '-', titleString, '-', "\\");
-
- // Items
- for( i = 0; i < items_in_view; i ++ )
- {
- int pos = 0;
-
- move( yBase + 1 + i, xBase );
- printw("| ");
-
- pos += 2;
-
- // Check for the '...' row
- // - Oh god, magic numbers!
- if( (i == 0 && itemBase > 0)
- || (i == items_in_view - 1 && itemBase < maxItemIndex - items_in_view) )
- {
- printw(" ..."); pos += 8;
- times = (width - pos) - 1;
- while(times--) addch(' ');
- }
- // Show an item
- else {
- ShowItemAt(
- yBase + 1 + i, xBase + pos, // Position
- (width - pos) - 3, // Width
- itemBase + i, // Index
- !!(currentItem == itemBase + i) // Hilighted
- );
- printw(" ");
- }
-
- // Scrollbar (if needed)
- if( maxItemIndex > items_in_view ) {
- if( i == 0 ) {
- addch('A');
- }
- else if( i == items_in_view - 1 ) {
- addch('V');
- }
- else {
- int percentage = itemBase * 100 / (maxItemIndex-items_in_view);
- if( i-1 == percentage*(items_in_view-3)/100 ) {
- addch('#');
- }
- else {
- addch('|');
- }
- }
- }
- else {
- addch('|');
- }
- }
-
- // Footer
- PrintAlign(yBase+height-2, xBase, width, "\\", '-', "", '-', "/");
-
- // User line
- // - Username, balance, flags
- PrintAlign(yBase+height-1, xBase+1, width-2,
- username, ' ', balance_str, ' ', gsUserFlags);
-
-
- // Get input
- ch = getch();
-
- if( ch == '\x1B' ) {
- ch = getch();
- if( ch == '[' ) {
- ch = getch();
-
- switch(ch)
- {
- case 'B': _ItemDown(); break;
- case 'A': _ItemUp(); break;
- }
- }
- else {
-
- }
- }
- else {
- switch(ch)
- {
- case '\n':
- ret = ShowItemAt(0, 0, 0, currentItem, 0);
- break;
- case 'h': break;
- case 'j': _ItemDown(); break;
- case 'k': _ItemUp(); break;
- case 'l': break;
- case 0x1b: // Escape
- case 'q':
- ret = -1; // -1: Return with no dispense
- break;
- }
-
- // Check if the return value was changed
- if( ret != -2 ) break;
- }
-
- // Scroll only if needed
- if( items_in_view < maxItemIndex )
- {
- // - If the current item is above the second item shown, and we're not at the top
- if( currentItem < itemBase + 2 && itemBase > 0 ) {
- itemBase = currentItem - 2;
- if(itemBase < 0) itemBase = 0;
- }
- // - If the current item is below the second item show, and we're not at the bottom
- if( currentItem > itemBase + items_in_view - 2 && itemBase + items_in_view < maxItemIndex ) {
- itemBase = currentItem - items_in_view + 2;
- if( itemBase > maxItemIndex - items_in_view )
- itemBase = maxItemIndex - items_in_view;
- }
- }
- }
-
-
- // Leave
- endwin();
- return ret;
-}
-
-/**
- * \brief Show item \a Index at (\a Col, \a Row)
- * \return Dispense index of item
- * \note Part of the NCurses UI
- */
-int ShowItemAt(int Row, int Col, int Width, int Index, int bHilighted)
-{
- char *name = NULL;
- int price = 0;
- int status = -1;
-
- switch(giUIMode)
- {
- // Standard UI
- // - This assumes that
- case UI_MODE_STANDARD:
- // Bounds check
- // Index = -1, request limit
- if( Index < 0 || Index >= giNumItems+2 )
- return giNumItems+2;
- // Drink label
- if( Index == 0 )
- {
- price = 0;
- name = "Coke Machine";
- Index = -1; // -1 indicates a label
- break;
- }
- Index --;
- // Drinks 0 - 6
- if( Index <= 6 )
- {
- name = gaItems[Index].Desc;
- price = gaItems[Index].Price;
- status = gaItems[Index].Status;
- break;
- }
- Index -= 7;
- // EPS label
- if( Index == 0 )
- {
- price = 0;
- name = "Electronic Payment System";
- Index = -1; // -1 indicates a label
- break;
- }
- Index --;
- Index += 7;
- name = gaItems[Index].Desc;
- price = gaItems[Index].Price;
- status = gaItems[Index].Status;
- break;
- default:
- return -1;
- }
-
- // Width = 0, don't print
- if( Width > 0 )
- {
- // 4 preceding, 5 price
- int nameWidth = Width - 4 - snprintf(NULL, 0, " %4i", price);
- move( Row, Col );
-
- if( Index >= 0 )
- {
- // Show hilight and status
- switch( status )
- {
- case 0:
- if( bHilighted )
- printw("-> ");
- else
- printw(" ");
- break;
- case 1:
- printw("SLD ");
- break;
-
- default:
- case -1:
- printw("ERR ");
- break;
- }
-
- printw("%-*.*s", nameWidth, nameWidth, name);
-
- printw(" %4i", price);
- }
- else
- {
- printw("-- %-*.*s ", Width-4, Width-4, name);
- }
- }
-
- // If the item isn't availiable for sale, return -1 (so it's skipped)
- if( status || (price > giUserBalance && gbDisallowSelectWithoutBalance) )
- Index = -1;
-
- return Index;
-}
-
-/**
- * \brief Print a three-part string at the specified position (formatted)
- * \note NCurses UI Helper
- *
- * Prints \a Left on the left of the area, \a Right on the righthand side
- * and \a Mid in the middle of the area. These are padded with \a Pad1
- * between \a Left and \a Mid, and \a Pad2 between \a Mid and \a Right.
- *
- * ::printf style format codes are allowed in \a Left, \a Mid and \a Right,
- * and the arguments to these are read in that order.
- */
-void PrintAlign(int Row, int Col, int Width, const char *Left, char Pad1,
- const char *Mid, char Pad2, const char *Right, ...)
-{
- int lLen, mLen, rLen;
- int times;
-
- va_list args;
-
- // Get the length of the strings
- va_start(args, Right);
- lLen = vsnprintf(NULL, 0, Left, args);
- mLen = vsnprintf(NULL, 0, Mid, args);
- rLen = vsnprintf(NULL, 0, Right, args);
- va_end(args);
-
- // Sanity check
- if( lLen + mLen/2 > Width/2 || mLen/2 + rLen > Width/2 ) {
- return ; // TODO: What to do?
- }
-
- move(Row, Col);
-
- // Render strings
- va_start(args, Right);
- // - Left
- {
- char tmp[lLen+1];
- vsnprintf(tmp, lLen+1, Left, args);
- addstr(tmp);
- }
- // - Left padding
- times = (Width - mLen)/2 - lLen;
- while(times--) addch(Pad1);
- // - Middle
- {
- char tmp[mLen+1];
- vsnprintf(tmp, mLen+1, Mid, args);
- addstr(tmp);
- }
- // - Right Padding
- times = (Width - mLen)/2 - rLen;
- if( (Width - mLen) % 2 ) times ++;
- while(times--) addch(Pad2);
- // - Right
- {
- char tmp[rLen+1];
- vsnprintf(tmp, rLen+1, Right, args);
- addstr(tmp);
- }
-}
-
-// ---------------------
-// --- Coke Protocol ---
-// ---------------------
-int OpenConnection(const char *Host, int Port)
-{
- struct hostent *host;
- struct sockaddr_in serverAddr;
- int sock;
-
- host = gethostbyname(Host);
- if( !host ) {
- fprintf(stderr, "Unable to look up '%s'\n", Host);
- return -1;
- }
-
- memset(&serverAddr, 0, sizeof(serverAddr));
-
- serverAddr.sin_family = AF_INET; // IPv4
- // NOTE: I have a suspicion that IPv6 will play sillybuggers with this :)
- serverAddr.sin_addr.s_addr = *((unsigned long *) host->h_addr_list[0]);
- serverAddr.sin_port = htons(Port);
-
- sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
- if( sock < 0 ) {
- fprintf(stderr, "Failed to create socket\n");
- return -1;
- }
-
-// printf("geteuid() = %i, getuid() = %i\n", geteuid(), getuid());
-
- if( geteuid() == 0 || getuid() == 0 )
- {
- int i;
- struct sockaddr_in localAddr;
- memset(&localAddr, 0, sizeof(localAddr));
- localAddr.sin_family = AF_INET; // IPv4
-
- // Loop through all the top ports until one is avaliable
- for( i = 512; i < 1024; i ++)
- {
- localAddr.sin_port = htons(i); // IPv4
- // Attempt to bind to low port for autoauth
- if( bind(sock, (struct sockaddr*)&localAddr, sizeof(localAddr)) == 0 )
- break;
- }
- if( i == 1024 )
- printf("Warning: AUTOAUTH unavaliable\n");
-// else
-// printf("Bound to 0.0.0.0:%i\n", i);
- }
-
- if( connect(sock, (struct sockaddr *) &serverAddr, sizeof(serverAddr)) < 0 ) {
- fprintf(stderr, "Failed to connect to server\n");
- return -1;
- }
-
- // We're not authenticated if the connection has just opened
- gbIsAuthenticated = 0;
-
- return sock;
-}
-
-int Authenticate_AutoAuth(int Socket, const char *Username)
-{
- char *buf;
- int responseCode;
- int ret = -1;
-
- // Attempt automatic authentication
- sendf(Socket, "AUTOAUTH %s\n", Username);
-
- // Check if it worked
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
- switch( responseCode )
- {
- case 200: // Autoauth succeeded, return
- ret = 0;
- break;
-
- case 401: // Untrusted
-// fprintf(stderr, "Untrusted host, AUTOAUTH unavaliable\n");
- ret = RV_PERMISSIONS;
- break;
- case 404: // Bad Username
- fprintf(stderr, "Bad Username '%s'\n", Username);
- ret = RV_INVALID_USER;
- break;
-
- default:
- fprintf(stderr, "Unkown response code %i from server\n", responseCode);
- printf("%s\n", buf);
- ret = RV_UNKNOWN_ERROR;
- break;;
- }
-
- free(buf);
- return ret;
-}
-
-int Authenticate_AuthIdent(int Socket)
-{
- char *buf;
- int responseCode;
- int ret = -1;
-
- // Attempt automatic authentication
- sendf(Socket, "AUTHIDENT\n");
-
- // Check if it worked
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
- switch( responseCode )
- {
- case 200: // Autoauth succeeded, return
- ret = 0;
- break;
-
- case 401: // Untrusted
-// fprintf(stderr, "Untrusted host, AUTHIDENT unavaliable\n");
- ret = RV_PERMISSIONS;
- break;
-
- default:
- fprintf(stderr, "Unkown response code %i from server\n", responseCode);
- printf("%s\n", buf);
- ret = RV_UNKNOWN_RESPONSE;
- break;
- }
-
- free(buf);
-
- return ret;
-}
-
-int Authenticate_Password(int Socket, const char *Username)
-{
- #if USE_PASSWORD_AUTH
- char *buf;
- int responseCode;
- char salt[32];
- int i;
- regmatch_t matches[4];
-
- sendf(Socket, "USER %s\n", Username);
- printf("Using username %s\n", Username);
-
- buf = ReadLine(Socket);
-
- // TODO: Get Salt
- // Expected format: 100 SALT <something> ...
- // OR : 100 User Set
- RunRegex(&gSaltRegex, buf, 4, matches, "Malformed server response");
- responseCode = atoi(buf);
- if( responseCode != 100 ) {
- fprintf(stderr, "Unknown repsonse code %i from server\n%s\n", responseCode, buf);
- free(buf);
- return RV_UNKNOWN_ERROR; // ERROR
- }
-
- // Check for salt
- if( memcmp( buf+matches[2].rm_so, "SALT", matches[2].rm_eo - matches[2].rm_so) == 0) {
- // Store it for later
- memcpy( salt, buf + matches[3].rm_so, matches[3].rm_eo - matches[3].rm_so );
- salt[ matches[3].rm_eo - matches[3].rm_so ] = 0;
- }
- free(buf);
-
- // Give three attempts
- for( i = 0; i < 3; i ++ )
- {
- int ofs = strlen(Username)+strlen(salt);
- char tmpBuf[42];
- char tmp[ofs+20];
- char *pass = getpass("Password: ");
- uint8_t h[20];
-
- // Create hash string
- // <username><salt><hash>
- strcpy(tmp, Username);
- strcat(tmp, salt);
- SHA1( (unsigned char*)pass, strlen(pass), h );
- memcpy(tmp+ofs, h, 20);
-
- // Hash all that
- SHA1( (unsigned char*)tmp, ofs+20, h );
- sprintf(tmpBuf, "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
- h[ 0], h[ 1], h[ 2], h[ 3], h[ 4], h[ 5], h[ 6], h[ 7], h[ 8], h[ 9],
- h[10], h[11], h[12], h[13], h[14], h[15], h[16], h[17], h[18], h[19]
- );
-
- // Send password
- sendf(Socket, "PASS %s\n", tmpBuf);
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
- // Auth OK?
- if( responseCode == 200 ) break;
- // Bad username/password
- if( responseCode == 401 ) continue;
-
- fprintf(stderr, "Unknown repsonse code %i from server\n%s\n", responseCode, buf);
- free(buf);
- return -1;
- }
- free(buf);
- if( i == 3 )
- return RV_INVALID_USER; // 2 = Bad Password
-
- return 0;
- #else
- return RV_INVALID_USER;
- #endif
-}
-
-/**
- * \brief Authenticate with the server
- * \return Boolean Failure
- */
-int Authenticate(int Socket)
-{
- struct passwd *pwd;
-
- if( gbIsAuthenticated ) return 0;
-
- // Get user name
- pwd = getpwuid( getuid() );
-
- // Attempt AUTOAUTH
- if( Authenticate_AutoAuth(Socket, pwd->pw_name) == 0 )
- ;
- else if( Authenticate_AuthIdent(Socket) == 0 )
- ;
- else if( Authenticate_Password(Socket, pwd->pw_name) == 0 )
- return RV_INVALID_USER;
-
- // Set effective user
- if( gsEffectiveUser ) {
- char *buf;
- int responseCode;
- sendf(Socket, "SETEUSER %s\n", gsEffectiveUser);
-
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 200:
- printf("Running as '%s' by '%s'\n", gsEffectiveUser, pwd->pw_name);
- break;
-
- case 403:
- printf("Only coke members can use `dispense -u`\n");
- free(buf);
- return RV_PERMISSIONS;
-
- case 404:
- printf("Invalid user selected\n");
- free(buf);
- return RV_INVALID_USER;
-
- default:
- fprintf(stderr, "Unkown response code %i from server\n", responseCode);
- printf("%s\n", buf);
- free(buf);
- return RV_UNKNOWN_ERROR;
- }
-
- free(buf);
- }
-
- gbIsAuthenticated = 1;
-
- return 0;
-}
-
-int GetUserBalance(int Socket)
-{
- regmatch_t matches[6];
- struct passwd *pwd;
- char *buf;
- int responseCode;
-
- if( !gsUserName )
- {
- if( gsEffectiveUser ) {
- gsUserName = gsEffectiveUser;
- }
- else {
- pwd = getpwuid( getuid() );
- gsUserName = strdup(pwd->pw_name);
- }
- }
-
- sendf(Socket, "USER_INFO %s\n", gsUserName);
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
- switch(responseCode)
- {
- case 202: break; // Ok
-
- case 404:
- printf("Invalid user? (USER_INFO failed)\n");
- free(buf);
- return RV_INVALID_USER;
-
- default:
- fprintf(stderr, "Unkown response code %i from server\n", responseCode);
- printf("%s\n", buf);
- free(buf);
- return RV_UNKNOWN_ERROR;
- }
-
- RunRegex(&gUserInfoRegex, buf, 6, matches, "Malformed server response");
-
- giUserBalance = atoi( buf + matches[4].rm_so );
- gsUserFlags = strdup( buf + matches[5].rm_so );
-
- free(buf);
-
- return 0;
-}
-
-/**
- * \brief Read an item info response from the server
- * \param Dest Destination for the read item (strings will be on the heap)
- */
-int ReadItemInfo(int Socket, tItem *Dest)
-{
- char *buf;
- int responseCode;
-
- regmatch_t matches[8];
- char *statusStr;
-
- // Get item info
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 202: break;
-
- case 406:
- printf("Bad item name\n");
- free(buf);
- return RV_BAD_ITEM;
-
- default:
- fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n%s", responseCode, buf);
- free(buf);
- return RV_UNKNOWN_ERROR;
- }
-
- RunRegex(&gItemRegex, buf, 8, matches, "Malformed server response");
-
- buf[ matches[3].rm_eo ] = '\0';
- buf[ matches[5].rm_eo ] = '\0';
- buf[ matches[7].rm_eo ] = '\0';
-
- statusStr = &buf[ matches[5].rm_so ];
-
- Dest->ID = atoi( buf + matches[4].rm_so );
-
- if( strcmp(statusStr, "avail") == 0 )
- Dest->Status = 0;
- else if( strcmp(statusStr, "sold") == 0 )
- Dest->Status = 1;
- else if( strcmp(statusStr, "error") == 0 )
- Dest->Status = -1;
- else {
- fprintf(stderr, "Unknown response from dispense server (status '%s')\n",
- statusStr);
- return RV_UNKNOWN_ERROR;
- }
- Dest->Price = atoi( buf + matches[6].rm_so );
-
- // Hack a little to reduce heap fragmentation
- {
- char tmpType[strlen(buf + matches[3].rm_so) + 1];
- char tmpDesc[strlen(buf + matches[7].rm_so) + 1];
- strcpy(tmpType, buf + matches[3].rm_so);
- strcpy(tmpDesc, buf + matches[7].rm_so);
- free(buf);
- Dest->Type = strdup( tmpType );
- Dest->Desc = strdup( tmpDesc );
- }
-
- return 0;
-}
-
-/**
- * \brief Fill the item information structure
- * \return Boolean Failure
- */
-void PopulateItemList(int Socket)
-{
- char *buf;
- int responseCode;
-
- char *arrayType;
- int count, i;
- regmatch_t matches[4];
-
- // Ask server for stock list
- send(Socket, "ENUM_ITEMS\n", 11, 0);
- buf = ReadLine(Socket);
-
- //printf("Output: %s\n", buf);
-
- responseCode = atoi(buf);
- if( responseCode != 201 ) {
- fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n", responseCode);
- exit(RV_UNKNOWN_ERROR);
- }
-
- // - Get item list -
-
- // Expected format:
- // 201 Items <count>
- // 202 Item <count>
- RunRegex(&gArrayRegex, buf, 4, matches, "Malformed server response");
-
- arrayType = &buf[ matches[2].rm_so ]; buf[ matches[2].rm_eo ] = '\0';
- count = atoi( &buf[ matches[3].rm_so ] );
-
- // Check array type
- if( strcmp(arrayType, "Items") != 0 ) {
- // What the?!
- fprintf(stderr, "Unexpected array type, expected 'Items', got '%s'\n",
- arrayType);
- exit(RV_UNKNOWN_ERROR);
- }
- free(buf);
-
- giNumItems = count;
- gaItems = malloc( giNumItems * sizeof(tItem) );
-
- // Fetch item information
- for( i = 0; i < giNumItems; i ++ )
- {
- ReadItemInfo( Socket, &gaItems[i] );
- }
-
- // Read end of list
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- if( responseCode != 200 ) {
- fprintf(stderr, "Unknown response from dispense server %i\n'%s'",
- responseCode, buf
- );
- exit(-1);
- }
-
- free(buf);
-}
-
-
-/**
- * \brief Get information on an item
- * \return Boolean Failure
- */
-int Dispense_ItemInfo(int Socket, const char *Type, int ID)
-{
- tItem item;
- int ret;
-
- // Query
- sendf(Socket, "ITEM_INFO %s:%i\n", Type, ID);
-
- ret = ReadItemInfo(Socket, &item);
- if(ret) return ret;
-
- printf("%8s:%-2i %2i.%02i %s\n",
- item.Type, item.ID,
- item.Price/100, item.Price%100,
- item.Desc);
-
- free(item.Type);
- free(item.Desc);
-
- return 0;
-}
-
-/**
- * \brief Dispense an item
- * \return Boolean Failure
- */
-int DispenseItem(int Socket, const char *Type, int ID)
-{
- int ret, responseCode;
- char *buf;
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- // Dispense!
- sendf(Socket, "DISPENSE %s:%i\n", Type, ID);
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
- switch( responseCode )
- {
- case 200:
- printf("Dispense OK\n");
- ret = 0;
- break;
- case 401:
- printf("Not authenticated\n");
- ret = RV_PERMISSIONS;
- break;
- case 402:
- printf("Insufficient balance\n");
- ret = RV_BALANCE;
- break;
- case 406:
- printf("Bad item name\n");
- ret = RV_BAD_ITEM;
- break;
- case 500:
- printf("Item failed to dispense, is the slot empty?\n");
- ret = RV_SERVER_ERROR;
- break;
- case 501:
- printf("Dispense not possible (slot empty/permissions)\n");
- ret = RV_SERVER_ERROR;
- break;
- default:
- printf("Unknown response code %i ('%s')\n", responseCode, buf);
- ret = RV_UNKNOWN_ERROR;
- break;
- }
-
- free(buf);
- return ret;
-}
-
-/**
- * \brief Alter a user's balance
- */
-int Dispense_AlterBalance(int Socket, const char *Username, int Ammount, const char *Reason)
-{
- char *buf;
- int responseCode, rv = -1;
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- // Sanity
- if( Ammount == 0 ) {
- printf("An amount would be nice\n");
- return RV_ARGUMENTS;
- }
-
- sendf(Socket, "ADD %s %i %s\n", Username, Ammount, Reason);
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 200:
- rv = 0; // OK
- break;
- case 402:
- fprintf(stderr, "Insufficient balance\n");
- rv = RV_BAD_ITEM;
- break;
- case 403: // Not in coke
- fprintf(stderr, "You are not in coke (sucker)\n");
- rv = RV_PERMISSIONS;
- break;
- case 404: // Unknown user
- fprintf(stderr, "Unknown user '%s'\n", Username);
- rv = RV_INVALID_USER;
- break;
- default:
- fprintf(stderr, "Unknown response code %i\n'%s'\n", responseCode, buf);
- rv = RV_UNKNOWN_RESPONSE;
- break;
- }
- free(buf);
-
- return rv;
-}
-
-/**
- * \brief Set a user's balance
- * \note Only avaliable to dispense admins
- */
-int Dispense_SetBalance(int Socket, const char *Username, int Balance, const char *Reason)
-{
- char *buf;
- int responseCode;
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- sendf(Socket, "SET %s %i %s\n", Username, Balance, Reason);
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
- free(buf);
-
- switch(responseCode)
- {
- case 200: return 0; // OK
- case 403: // Not in coke
- fprintf(stderr, "You are not an admin\n");
- return RV_PERMISSIONS;
- case 404: // Unknown user
- fprintf(stderr, "Unknown user '%s'\n", Username);
- return RV_INVALID_USER;
- default:
- fprintf(stderr, "Unknown response code %i\n", responseCode);
- return RV_UNKNOWN_RESPONSE;
- }
-
- return -1;
-}
-
-/**
- * \brief Give money to another user
- */
-int Dispense_Give(int Socket, const char *Username, int Ammount, const char *Reason)
-{
- char *buf;
- int responseCode;
-
- if( Ammount < 0 ) {
- printf("Sorry, you can only give, you can't take.\n");
- return RV_ARGUMENTS;
- }
-
- // Fast return on zero
- if( Ammount == 0 ) {
- printf("Are you actually going to give any?\n");
- return RV_ARGUMENTS;
- }
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- sendf(Socket, "GIVE %s %i %s\n", Username, Ammount, Reason);
-
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
- free(buf);
- switch(responseCode)
- {
- case 200:
- printf("Give succeeded\n");
- return RV_SUCCESS; // OK
-
- case 402:
- fprintf(stderr, "Insufficient balance\n");
- return RV_BALANCE;
-
- case 404: // Unknown user
- fprintf(stderr, "Unknown user '%s'\n", Username);
- return RV_INVALID_USER;
-
- default:
- fprintf(stderr, "Unknown response code %i\n", responseCode);
- return RV_UNKNOWN_RESPONSE;
- }
-
- return -1;
-}
-
-int Dispense_Refund(int Socket, const char *Username, const char *Item, int PriceOverride)
-{
- char *buf;
- int responseCode, ret = -1;
-
- // Check item id
- if( RunRegex(&gUserItemIdentRegex, Item, 0, NULL, NULL) != 0 )
- {
- fprintf(stderr, "Error: Invalid item ID passed (should be <type>:<num>)\n");
- return RV_ARGUMENTS;
- }
-
- // Check username (quick)
- if( strchr(Username, ' ') || strchr(Username, '\n') )
- {
- fprintf(stderr, "Error: Username is invalid (no spaces or newlines please)\n");
- return RV_ARGUMENTS;
- }
-
- // Send the query
- sendf(Socket, "REFUND %s %s %i\n", Username, Item, PriceOverride);
-
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
- switch(responseCode)
- {
- case 200:
- Dispense_ShowUser(Socket, Username); // Show destination account
- ret = 0;
- break;
- case 403:
- fprintf(stderr, "Refund access is only avaliable to coke members\n");
- ret = RV_PERMISSIONS;
- break;
- case 404:
- fprintf(stderr, "Unknown user '%s' passed\n", Username);
- ret = RV_INVALID_USER;
- break;
- case 406:
- fprintf(stderr, "Invalid item '%s' passed\n", Item);
- ret = RV_BAD_ITEM;
- break;
- default:
- fprintf(stderr, "Unknown response from server %i\n%s\n", responseCode, buf);
- ret = -1;
- break;
- }
- free(buf);
- return ret;
-}
-
-/**
- * \brief Donate money to the club
- */
-int Dispense_Donate(int Socket, int Ammount, const char *Reason)
-{
- char *buf;
- int responseCode;
-
- if( Ammount < 0 ) {
- printf("Sorry, you can only give, you can't take.\n");
- return -1;
- }
-
- // Fast return on zero
- if( Ammount == 0 ) {
- printf("Are you actually going to give any?\n");
- return 1;
- }
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- sendf(Socket, "DONATE %i %s\n", Ammount, Reason);
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
- free(buf);
-
- switch(responseCode)
- {
- case 200: return 0; // OK
-
- case 402:
- fprintf(stderr, "Insufficient balance\n");
- return 1;
-
- default:
- fprintf(stderr, "Unknown response code %i\n", responseCode);
- return -1;
- }
-
- return -1;
-}
-
-/**
- * \brief Enumerate users
- */
-int Dispense_EnumUsers(int Socket)
-{
- char *buf;
- int responseCode;
- int nUsers;
- regmatch_t matches[4];
-
- if( giMinimumBalance != INT_MIN ) {
- if( giMaximumBalance != INT_MAX ) {
- sendf(Socket, "ENUM_USERS min_balance:%i max_balance:%i\n", giMinimumBalance, giMaximumBalance);
- }
- else {
- sendf(Socket, "ENUM_USERS min_balance:%i\n", giMinimumBalance);
- }
- }
- else {
- if( giMaximumBalance != INT_MAX ) {
- sendf(Socket, "ENUM_USERS max_balance:%i\n", giMaximumBalance);
- }
- else {
- sendf(Socket, "ENUM_USERS\n");
- }
- }
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 201: break; // Ok, length follows
-
- default:
- fprintf(stderr, "Unknown response code %i\n%s\n", responseCode, buf);
- free(buf);
- return -1;
- }
-
- // Get count (not actually used)
- RunRegex(&gArrayRegex, buf, 4, matches, "Malformed server response");
- nUsers = atoi( buf + matches[3].rm_so );
- printf("%i users returned\n", nUsers);
-
- // Free string
- free(buf);
-
- // Read returned users
- do {
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- if( responseCode != 202 ) break;
-
- _PrintUserLine(buf);
- free(buf);
- } while(responseCode == 202);
-
- // Check final response
- if( responseCode != 200 ) {
- fprintf(stderr, "Unknown response code %i\n%s\n", responseCode, buf);
- free(buf);
- return -1;
- }
-
- free(buf);
-
- return 0;
-}
-
-int Dispense_ShowUser(int Socket, const char *Username)
-{
- char *buf;
- int responseCode, ret;
-
- sendf(Socket, "USER_INFO %s\n", Username);
- buf = ReadLine(Socket);
-
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 202:
- _PrintUserLine(buf);
- ret = 0;
- break;
-
- case 404:
- printf("Unknown user '%s'\n", Username);
- ret = 1;
- break;
-
- default:
- fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
- ret = -1;
- break;
- }
-
- free(buf);
-
- return ret;
-}
-
-void _PrintUserLine(const char *Line)
-{
- regmatch_t matches[6];
- int bal;
-
- RunRegex(&gUserInfoRegex, Line, 6, matches, "Malformed server response");
- // 3: Username
- // 4: Balance
- // 5: Flags
- {
- int usernameLen = matches[3].rm_eo - matches[3].rm_so;
- char username[usernameLen + 1];
- int flagsLen = matches[5].rm_eo - matches[5].rm_so;
- char flags[flagsLen + 1];
-
- memcpy(username, Line + matches[3].rm_so, usernameLen);
- username[usernameLen] = '\0';
- memcpy(flags, Line + matches[5].rm_so, flagsLen);
- flags[flagsLen] = '\0';
-
- bal = atoi(Line + matches[4].rm_so);
- printf("%-15s: $%8.02f (%s)\n", username, ((float)bal)/100, flags);
- }
-}
-
-int Dispense_AddUser(int Socket, const char *Username)
-{
- char *buf;
- int responseCode, ret;
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- sendf(Socket, "USER_ADD %s\n", Username);
-
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 200:
- printf("User '%s' added\n", Username);
- ret = 0;
- break;
-
- case 403:
- printf("Only wheel can add users\n");
- ret = 1;
- break;
-
- case 404:
- printf("User '%s' already exists\n", Username);
- ret = 0;
- break;
-
- default:
- fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
- ret = -1;
- break;
- }
-
- free(buf);
-
- return ret;
-}
-
-int Dispense_SetUserType(int Socket, const char *Username, const char *TypeString, const char *Reason)
-{
- char *buf;
- int responseCode, ret;
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- // TODO: Pre-validate the string
-
- sendf(Socket, "USER_FLAGS %s %s %s\n", Username, TypeString, Reason);
-
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 200:
- printf("User '%s' updated\n", Username);
- ret = 0;
- break;
-
- case 403:
- printf("Only dispense admins can modify users\n");
- ret = RV_PERMISSIONS;
- break;
-
- case 404:
- printf("User '%s' does not exist\n", Username);
- ret = RV_INVALID_USER;
- break;
-
- case 407:
- printf("Flag string is invalid\n");
- ret = RV_ARGUMENTS;
- break;
-
- default:
- fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
- ret = RV_UNKNOWN_RESPONSE;
- break;
- }
-
- free(buf);
-
- return ret;
-}
-
-int Dispense_SetItem(int Socket, const char *Type, int ID, int NewPrice, const char *NewName)
-{
- char *buf;
- int responseCode, ret;
-
- // Check for a dry run
- if( gbDryRun ) {
- printf("Dry Run - No action\n");
- return 0;
- }
-
- sendf(Socket, "UPDATE_ITEM %s:%i %i %s\n", Type, ID, NewPrice, NewName);
-
- buf = ReadLine(Socket);
- responseCode = atoi(buf);
-
- switch(responseCode)
- {
- case 200:
- printf("Item %s:%i updated\n", Type, ID);
- ret = 0;
- break;
-
- case 403:
- printf("Only coke members can modify the slots\n");
- ret = RV_PERMISSIONS;
- break;
-
- case 406:
- printf("Invalid item passed\n");
- ret = RV_BAD_ITEM;
- break;
-
- default:
- fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
- ret = -1;
- break;
- }
-
- free(buf);
-
- return ret;
-}
-
// ---------------
// --- Helpers ---
// ---------------
-char *ReadLine(int Socket)
-{
- static char buf[BUFSIZ];
- static int bufPos = 0;
- static int bufValid = 0;
- int len;
- char *newline = NULL;
- int retLen = 0;
- char *ret = malloc(10);
-
- #if DEBUG_TRACE_SERVER
- printf("ReadLine: ");
- fflush(stdout);
- #endif
-
- ret[0] = '\0';
-
- while( !newline )
- {
- if( bufValid ) {
- len = bufValid;
- }
- else {
- len = recv(Socket, buf+bufPos, BUFSIZ-1-bufPos, 0);
- if( len <= 0 ) {
- free(ret);
- return strdup("599 Client Connection Error\n");
- }
- }
- buf[bufPos+len] = '\0';
-
- newline = strchr( buf+bufPos, '\n' );
- if( newline ) {
- *newline = '\0';
- }
-
- retLen += strlen(buf+bufPos);
- ret = realloc(ret, retLen + 1);
- strcat( ret, buf+bufPos );
-
- if( newline ) {
- int newLen = newline - (buf+bufPos) + 1;
- bufValid = len - newLen;
- len = newLen;
- }
- if( len + bufPos == BUFSIZ - 1 ) bufPos = 0;
- else bufPos += len;
- }
-
- #if DEBUG_TRACE_SERVER
- printf("%i '%s'\n", retLen, ret);
- #endif
-
- return ret;
-}
-
-int sendf(int Socket, const char *Format, ...)
-{
- va_list args;
- int len;
-
- va_start(args, Format);
- len = vsnprintf(NULL, 0, Format, args);
- va_end(args);
-
- {
- char buf[len+1];
- va_start(args, Format);
- vsnprintf(buf, len+1, Format, args);
- va_end(args);
-
- #if DEBUG_TRACE_SERVER
- printf("sendf: %s", buf);
- #endif
-
- return send(Socket, buf, len, 0);
- }
-}
-
char *trim(char *string)
{
int i;
diff --git a/src/client/menu.c b/src/client/menu.c
new file mode 100644
index 0000000..ce3309f
--- /dev/null
+++ b/src/client/menu.c
@@ -0,0 +1,407 @@
+/*
+ * OpenDispense 2
+ * UCC (University [of WA] Computer Club) Electronic Accounting System
+ * - Dispense Client
+ *
+ * menu.c - ncurses dispense menu
+ *
+ * This file is licenced under the 3-clause BSD Licence. See the file
+ * COPYING for full details.
+ */
+#include <stdlib.h>
+#include <ncurses.h>
+#include <pwd.h> // getpwuids
+#include <unistd.h> // getuid
+#include "common.h"
+
+// === PROTOTYPES ===
+ int ShowItemAt(int Row, int Col, int Width, int Index, int bHilighted);
+void PrintAlign(int Row, int Col, int Width, const char *Left, char Pad1, const char *Mid, char Pad2, const char *Right, ...);
+
+// -------------------
+// --- NCurses GUI ---
+// -------------------
+/**
+ * \brief Render the NCurses UI
+ */
+int ShowNCursesUI(void)
+{
+ int ch;
+ int i, times;
+ int xBase, yBase;
+ const int displayMinWidth = 50;
+ const char *titleString = "Dispense";
+ int items_in_view;
+ int maxItemIndex;
+ int itemBase = 0;
+ int currentItem;
+ int ret = -2; // -2: Used for marking "no return yet"
+
+ char balance_str[5+1+2+1]; // If $9999.99 is too little, something's wrong
+ char *username;
+ struct passwd *pwd;
+
+ int height, width;
+
+ void _ItemDown(void)
+ {
+ currentItem ++;
+ // Skip over spacers
+ while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
+ currentItem ++;
+
+ if( currentItem >= maxItemIndex ) {
+ currentItem = 0;
+ // Skip over spacers
+ while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
+ currentItem ++;
+ }
+ }
+
+ void _ItemUp(void)
+ {
+ currentItem --;
+ // Skip over spacers
+ while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
+ currentItem --;
+
+ if( currentItem < 0 ) {
+ currentItem = maxItemIndex - 1;
+ // Skip over spacers
+ while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
+ currentItem --;
+ }
+ }
+
+ // Get Username
+ if( gsEffectiveUser )
+ username = gsEffectiveUser;
+ else {
+ pwd = getpwuid( getuid() );
+ username = pwd->pw_name;
+ }
+ // Get balance
+ snprintf(balance_str, sizeof(balance_str), "$%i.%02i", giUserBalance/100, abs(giUserBalance)%100);
+
+ // Enter curses mode
+ initscr();
+ cbreak(); noecho();
+
+ // Get max index
+ maxItemIndex = ShowItemAt(0, 0, 0, -1, 0);
+ // Get item count per screen
+ // - 6: randomly chosen (Need at least 3)
+ items_in_view = LINES - 6;
+ if( items_in_view > maxItemIndex )
+ items_in_view = maxItemIndex;
+ // Get first index
+ currentItem = 0;
+ while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
+ currentItem ++;
+
+
+ // Get dimensions
+ height = items_in_view + 3;
+ width = displayMinWidth;
+
+ // Get positions
+ xBase = COLS/2 - width/2;
+ yBase = LINES/2 - height/2;
+
+ for( ;; )
+ {
+ // Header
+ PrintAlign(yBase, xBase, width, "/", '-', titleString, '-', "\\");
+
+ // Items
+ for( i = 0; i < items_in_view; i ++ )
+ {
+ int pos = 0;
+
+ move( yBase + 1 + i, xBase );
+ printw("| ");
+
+ pos += 2;
+
+ // Check for the '...' row
+ // - Oh god, magic numbers!
+ if( (i == 0 && itemBase > 0)
+ || (i == items_in_view - 1 && itemBase < maxItemIndex - items_in_view) )
+ {
+ printw(" ..."); pos += 8;
+ times = (width - pos) - 1;
+ while(times--) addch(' ');
+ }
+ // Show an item
+ else {
+ ShowItemAt(
+ yBase + 1 + i, xBase + pos, // Position
+ (width - pos) - 3, // Width
+ itemBase + i, // Index
+ !!(currentItem == itemBase + i) // Hilighted
+ );
+ printw(" ");
+ }
+
+ // Scrollbar (if needed)
+ if( maxItemIndex > items_in_view ) {
+ if( i == 0 ) {
+ addch('A');
+ }
+ else if( i == items_in_view - 1 ) {
+ addch('V');
+ }
+ else {
+ int percentage = itemBase * 100 / (maxItemIndex-items_in_view);
+ if( i-1 == percentage*(items_in_view-3)/100 ) {
+ addch('#');
+ }
+ else {
+ addch('|');
+ }
+ }
+ }
+ else {
+ addch('|');
+ }
+ }
+
+ // Footer
+ PrintAlign(yBase+height-2, xBase, width, "\\", '-', "", '-', "/");
+
+ // User line
+ // - Username, balance, flags
+ PrintAlign(yBase+height-1, xBase+1, width-2,
+ username, ' ', balance_str, ' ', gsUserFlags);
+ PrintAlign(yBase+height, xBase+1, width-2,
+ "q: Quit", ' ', "Arrow: Select", ' ', "Enter: Drop");
+
+
+ // Get input
+ ch = getch();
+
+ if( ch == '\x1B' ) {
+ ch = getch();
+ if( ch == '[' ) {
+ ch = getch();
+
+ switch(ch)
+ {
+ case 'B': _ItemDown(); break;
+ case 'A': _ItemUp(); break;
+ }
+ }
+ else if( ch == ERR || ch == '\x1b' ) {
+ ret = -1;
+ break;
+ }
+ else {
+ fprintf(stderr, "Unknown character 0x%x\n", ch);
+ }
+ }
+ else {
+ switch(ch)
+ {
+ case '\n':
+ ret = ShowItemAt(0, 0, 0, currentItem, 0);
+ break;
+ case 'h': break;
+ case 'j': _ItemDown(); break;
+ case 'k': _ItemUp(); break;
+ case 'l': break;
+ case 0x1b: // Escape
+ case 'q':
+ ret = -1; // -1: Return with no dispense
+ break;
+ }
+
+ // Check if the return value was changed
+ if( ret != -2 ) break;
+ }
+
+ // Scroll only if needed
+ if( items_in_view < maxItemIndex )
+ {
+ // - If the current item is above the second item shown, and we're not at the top
+ if( currentItem < itemBase + 2 && itemBase > 0 ) {
+ itemBase = currentItem - 2;
+ if(itemBase < 0) itemBase = 0;
+ }
+ // - If the current item is below the second item show, and we're not at the bottom
+ if( currentItem > itemBase + items_in_view - 2 && itemBase + items_in_view < maxItemIndex ) {
+ itemBase = currentItem - items_in_view + 2;
+ if( itemBase > maxItemIndex - items_in_view )
+ itemBase = maxItemIndex - items_in_view;
+ }
+ }
+ }
+
+
+ // Leave
+ endwin();
+ return ret;
+}
+
+/**
+ * \brief Show item \a Index at (\a Col, \a Row)
+ * \return Dispense index of item
+ * \note Part of the NCurses UI
+ */
+int ShowItemAt(int Row, int Col, int Width, int Index, int bHilighted)
+{
+ char *name = NULL;
+ int price = 0;
+ int status = -1;
+
+ switch(giUIMode)
+ {
+ // Standard UI
+ // - This assumes that
+ case UI_MODE_STANDARD:
+ // Bounds check
+ // Index = -1, request limit
+ if( Index < 0 || Index >= giNumItems+2 )
+ return giNumItems+2;
+ // Drink label
+ if( Index == 0 )
+ {
+ price = 0;
+ name = "Coke Machine";
+ Index = -1; // -1 indicates a label
+ break;
+ }
+ Index --;
+ // Drinks 0 - 6
+ if( Index <= 6 )
+ {
+ name = gaItems[Index].Desc;
+ price = gaItems[Index].Price;
+ status = gaItems[Index].Status;
+ break;
+ }
+ Index -= 7;
+ // EPS label
+ if( Index == 0 )
+ {
+ price = 0;
+ name = "Electronic Payment System";
+ Index = -1; // -1 indicates a label
+ break;
+ }
+ Index --;
+ Index += 7;
+ name = gaItems[Index].Desc;
+ price = gaItems[Index].Price;
+ status = gaItems[Index].Status;
+ break;
+ default:
+ return -1;
+ }
+
+ // Width = 0, don't print
+ if( Width > 0 )
+ {
+ // 4 preceding, 5 price
+ int nameWidth = Width - 4 - snprintf(NULL, 0, " %4i", price);
+ move( Row, Col );
+
+ if( Index >= 0 )
+ {
+ // Show hilight and status
+ switch( status )
+ {
+ case 0:
+ if( bHilighted )
+ printw("-> ");
+ else
+ printw(" ");
+ break;
+ case 1:
+ printw("SLD ");
+ break;
+
+ default:
+ case -1:
+ printw("ERR ");
+ break;
+ }
+
+ printw("%-*.*s", nameWidth, nameWidth, name);
+
+ printw(" %4i", price);
+ }
+ else
+ {
+ printw("-- %-*.*s ", Width-4, Width-4, name);
+ }
+ }
+
+ // If the item isn't availiable for sale, return -1 (so it's skipped)
+ if( status || (price > giUserBalance && gbDisallowSelectWithoutBalance) )
+ Index = -1;
+
+ return Index;
+}
+
+/**
+ * \brief Print a three-part string at the specified position (formatted)
+ * \note NCurses UI Helper
+ *
+ * Prints \a Left on the left of the area, \a Right on the righthand side
+ * and \a Mid in the middle of the area. These are padded with \a Pad1
+ * between \a Left and \a Mid, and \a Pad2 between \a Mid and \a Right.
+ *
+ * ::printf style format codes are allowed in \a Left, \a Mid and \a Right,
+ * and the arguments to these are read in that order.
+ */
+void PrintAlign(int Row, int Col, int Width, const char *Left, char Pad1,
+ const char *Mid, char Pad2, const char *Right, ...)
+{
+ int lLen, mLen, rLen;
+ int times;
+
+ va_list args;
+
+ // Get the length of the strings
+ va_start(args, Right);
+ lLen = vsnprintf(NULL, 0, Left, args);
+ mLen = vsnprintf(NULL, 0, Mid, args);
+ rLen = vsnprintf(NULL, 0, Right, args);
+ va_end(args);
+
+ // Sanity check
+ if( lLen + mLen/2 > Width/2 || mLen/2 + rLen > Width/2 ) {
+ return ; // TODO: What to do?
+ }
+
+ move(Row, Col);
+
+ // Render strings
+ va_start(args, Right);
+ // - Left
+ {
+ char tmp[lLen+1];
+ vsnprintf(tmp, lLen+1, Left, args);
+ addstr(tmp);
+ }
+ // - Left padding
+ times = (Width - mLen)/2 - lLen;
+ while(times--) addch(Pad1);
+ // - Middle
+ {
+ char tmp[mLen+1];
+ vsnprintf(tmp, mLen+1, Mid, args);
+ addstr(tmp);
+ }
+ // - Right Padding
+ times = (Width - mLen)/2 - rLen;
+ if( (Width - mLen) % 2 ) times ++;
+ while(times--) addch(Pad2);
+ // - Right
+ {
+ char tmp[rLen+1];
+ vsnprintf(tmp, rLen+1, Right, args);
+ addstr(tmp);
+ }
+}
+
diff --git a/src/client/protocol.c b/src/client/protocol.c
new file mode 100644
index 0000000..483ee57
--- /dev/null
+++ b/src/client/protocol.c
@@ -0,0 +1,1161 @@
+/*
+ * OpenDispense 2
+ * UCC (University [of WA] Computer Club) Electronic Accounting System
+ * - Dispense Client
+ *
+ * protocol.c
+ * - Client/Server communication
+ *
+ * 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 <netdb.h> // gethostbyname
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+//#include <openssl/sha.h> // SHA1
+#include <pwd.h> // getpwuids
+#include <unistd.h> // close/getuid
+#include <limits.h> // INT_MIN/INT_MAX
+#include <stdarg.h>
+#include "common.h"
+
+// === PROTOTYPES ===
+char *ReadLine(int Socket);
+ int sendf(int Socket, const char *Format, ...);
+
+// ---------------------
+// --- Coke Protocol ---
+// ---------------------
+int OpenConnection(const char *Host, int Port)
+{
+ struct hostent *host;
+ struct sockaddr_in serverAddr;
+ int sock;
+
+ host = gethostbyname(Host);
+ if( !host ) {
+ fprintf(stderr, "Unable to look up '%s'\n", Host);
+ return -1;
+ }
+
+ memset(&serverAddr, 0, sizeof(serverAddr));
+
+ serverAddr.sin_family = AF_INET; // IPv4
+ // NOTE: I have a suspicion that IPv6 will play sillybuggers with this :)
+ serverAddr.sin_addr.s_addr = *((unsigned long *) host->h_addr_list[0]);
+ serverAddr.sin_port = htons(Port);
+
+ sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+ if( sock < 0 ) {
+ fprintf(stderr, "Failed to create socket\n");
+ return -1;
+ }
+
+// printf("geteuid() = %i, getuid() = %i\n", geteuid(), getuid());
+
+ if( geteuid() == 0 || getuid() == 0 )
+ {
+ int i;
+ struct sockaddr_in localAddr;
+ memset(&localAddr, 0, sizeof(localAddr));
+ localAddr.sin_family = AF_INET; // IPv4
+
+ // Loop through all the top ports until one is avaliable
+ for( i = 512; i < 1024; i ++)
+ {
+ localAddr.sin_port = htons(i); // IPv4
+ // Attempt to bind to low port for autoauth
+ if( bind(sock, (struct sockaddr*)&localAddr, sizeof(localAddr)) == 0 )
+ break;
+ }
+ if( i == 1024 )
+ printf("Warning: AUTOAUTH unavaliable\n");
+// else
+// printf("Bound to 0.0.0.0:%i\n", i);
+ }
+
+ if( connect(sock, (struct sockaddr *) &serverAddr, sizeof(serverAddr)) < 0 ) {
+ fprintf(stderr, "Failed to connect to server\n");
+ return -1;
+ }
+
+ // We're not authenticated if the connection has just opened
+ gbIsAuthenticated = 0;
+
+ return sock;
+}
+
+int Authenticate_AutoAuth(int Socket, const char *Username)
+{
+ char *buf;
+ int responseCode;
+ int ret = -1;
+
+ // Attempt automatic authentication
+ sendf(Socket, "AUTOAUTH %s\n", Username);
+
+ // Check if it worked
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+ switch( responseCode )
+ {
+ case 200: // Autoauth succeeded, return
+ ret = 0;
+ break;
+
+ case 401: // Untrusted
+// fprintf(stderr, "Untrusted host, AUTOAUTH unavaliable\n");
+ ret = RV_PERMISSIONS;
+ break;
+ case 404: // Bad Username
+ fprintf(stderr, "Bad Username '%s'\n", Username);
+ ret = RV_INVALID_USER;
+ break;
+
+ default:
+ fprintf(stderr, "Unkown response code %i from server\n", responseCode);
+ printf("%s\n", buf);
+ ret = RV_UNKNOWN_ERROR;
+ break;;
+ }
+
+ free(buf);
+ return ret;
+}
+
+int Authenticate_AuthIdent(int Socket)
+{
+ char *buf;
+ int responseCode;
+ int ret = -1;
+
+ // Attempt automatic authentication
+ sendf(Socket, "AUTHIDENT\n");
+
+ // Check if it worked
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+ switch( responseCode )
+ {
+ case 200: // Autoauth succeeded, return
+ ret = 0;
+ break;
+
+ case 401: // Untrusted
+// fprintf(stderr, "Untrusted host, AUTHIDENT unavaliable\n");
+ ret = RV_PERMISSIONS;
+ break;
+
+ default:
+ fprintf(stderr, "Unkown response code %i from server\n", responseCode);
+ printf("%s\n", buf);
+ ret = RV_UNKNOWN_RESPONSE;
+ break;
+ }
+
+ free(buf);
+
+ return ret;
+}
+
+int Authenticate_Password(int Socket, const char *Username)
+{
+ #if USE_PASSWORD_AUTH
+ char *buf;
+ int responseCode;
+ char salt[32];
+ int i;
+ regmatch_t matches[4];
+
+ sendf(Socket, "USER %s\n", Username);
+ printf("Using username %s\n", Username);
+
+ buf = ReadLine(Socket);
+
+ // TODO: Get Salt
+ // Expected format: 100 SALT <something> ...
+ // OR : 100 User Set
+ RunRegex(&gSaltRegex, buf, 4, matches, "Malformed server response");
+ responseCode = atoi(buf);
+ if( responseCode != 100 ) {
+ fprintf(stderr, "Unknown repsonse code %i from server\n%s\n", responseCode, buf);
+ free(buf);
+ return RV_UNKNOWN_ERROR; // ERROR
+ }
+
+ // Check for salt
+ if( memcmp( buf+matches[2].rm_so, "SALT", matches[2].rm_eo - matches[2].rm_so) == 0) {
+ // Store it for later
+ memcpy( salt, buf + matches[3].rm_so, matches[3].rm_eo - matches[3].rm_so );
+ salt[ matches[3].rm_eo - matches[3].rm_so ] = 0;
+ }
+ free(buf);
+
+ // Give three attempts
+ for( i = 0; i < 3; i ++ )
+ {
+ int ofs = strlen(Username)+strlen(salt);
+ char tmpBuf[42];
+ char tmp[ofs+20];
+ char *pass = getpass("Password: ");
+ uint8_t h[20];
+
+ // Create hash string
+ // <username><salt><hash>
+ strcpy(tmp, Username);
+ strcat(tmp, salt);
+ SHA1( (unsigned char*)pass, strlen(pass), h );
+ memcpy(tmp+ofs, h, 20);
+
+ // Hash all that
+ SHA1( (unsigned char*)tmp, ofs+20, h );
+ sprintf(tmpBuf, "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+ h[ 0], h[ 1], h[ 2], h[ 3], h[ 4], h[ 5], h[ 6], h[ 7], h[ 8], h[ 9],
+ h[10], h[11], h[12], h[13], h[14], h[15], h[16], h[17], h[18], h[19]
+ );
+
+ // Send password
+ sendf(Socket, "PASS %s\n", tmpBuf);
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+ // Auth OK?
+ if( responseCode == 200 ) break;
+ // Bad username/password
+ if( responseCode == 401 ) continue;
+
+ fprintf(stderr, "Unknown repsonse code %i from server\n%s\n", responseCode, buf);
+ free(buf);
+ return -1;
+ }
+ free(buf);
+ if( i == 3 )
+ return RV_INVALID_USER; // 2 = Bad Password
+
+ return 0;
+ #else
+ return RV_INVALID_USER;
+ #endif
+}
+
+/**
+ * \brief Authenticate with the server
+ * \return Boolean Failure
+ */
+int Authenticate(int Socket)
+{
+ struct passwd *pwd;
+
+ if( gbIsAuthenticated ) return 0;
+
+ // Get user name
+ pwd = getpwuid( getuid() );
+
+ // Attempt AUTOAUTH
+ if( Authenticate_AutoAuth(Socket, pwd->pw_name) == 0 )
+ ;
+ else if( Authenticate_AuthIdent(Socket) == 0 )
+ ;
+ else if( Authenticate_Password(Socket, pwd->pw_name) == 0 )
+ return RV_INVALID_USER;
+
+ // Set effective user
+ if( gsEffectiveUser ) {
+ char *buf;
+ int responseCode;
+ sendf(Socket, "SETEUSER %s\n", gsEffectiveUser);
+
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 200:
+ printf("Running as '%s' by '%s'\n", gsEffectiveUser, pwd->pw_name);
+ break;
+
+ case 403:
+ printf("Only coke members can use `dispense -u`\n");
+ free(buf);
+ return RV_PERMISSIONS;
+
+ case 404:
+ printf("Invalid user selected\n");
+ free(buf);
+ return RV_INVALID_USER;
+
+ default:
+ fprintf(stderr, "Unkown response code %i from server\n", responseCode);
+ printf("%s\n", buf);
+ free(buf);
+ return RV_UNKNOWN_ERROR;
+ }
+
+ free(buf);
+ }
+
+ gbIsAuthenticated = 1;
+
+ return 0;
+}
+
+int GetUserBalance(int Socket)
+{
+ regmatch_t matches[6];
+ struct passwd *pwd;
+ char *buf;
+ int responseCode;
+
+ if( !gsUserName )
+ {
+ if( gsEffectiveUser ) {
+ gsUserName = gsEffectiveUser;
+ }
+ else {
+ pwd = getpwuid( getuid() );
+ gsUserName = strdup(pwd->pw_name);
+ }
+ }
+
+ sendf(Socket, "USER_INFO %s\n", gsUserName);
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+ switch(responseCode)
+ {
+ case 202: break; // Ok
+
+ case 404:
+ printf("Invalid user? (USER_INFO failed)\n");
+ free(buf);
+ return RV_INVALID_USER;
+
+ default:
+ fprintf(stderr, "Unkown response code %i from server\n", responseCode);
+ printf("%s\n", buf);
+ free(buf);
+ return RV_UNKNOWN_ERROR;
+ }
+
+ RunRegex(&gUserInfoRegex, buf, 6, matches, "Malformed server response");
+
+ giUserBalance = atoi( buf + matches[4].rm_so );
+ gsUserFlags = strdup( buf + matches[5].rm_so );
+
+ free(buf);
+
+ return 0;
+}
+
+/**
+ * \brief Read an item info response from the server
+ * \param Dest Destination for the read item (strings will be on the heap)
+ */
+int ReadItemInfo(int Socket, tItem *Dest)
+{
+ char *buf;
+ int responseCode;
+
+ regmatch_t matches[8];
+ char *statusStr;
+
+ // Get item info
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 202: break;
+
+ case 406:
+ printf("Bad item name\n");
+ free(buf);
+ return RV_BAD_ITEM;
+
+ default:
+ fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n%s", responseCode, buf);
+ free(buf);
+ return RV_UNKNOWN_ERROR;
+ }
+
+ RunRegex(&gItemRegex, buf, 8, matches, "Malformed server response");
+
+ buf[ matches[3].rm_eo ] = '\0';
+ buf[ matches[5].rm_eo ] = '\0';
+ buf[ matches[7].rm_eo ] = '\0';
+
+ statusStr = &buf[ matches[5].rm_so ];
+
+ Dest->ID = atoi( buf + matches[4].rm_so );
+
+ if( strcmp(statusStr, "avail") == 0 )
+ Dest->Status = 0;
+ else if( strcmp(statusStr, "sold") == 0 )
+ Dest->Status = 1;
+ else if( strcmp(statusStr, "error") == 0 )
+ Dest->Status = -1;
+ else {
+ fprintf(stderr, "Unknown response from dispense server (status '%s')\n",
+ statusStr);
+ return RV_UNKNOWN_ERROR;
+ }
+ Dest->Price = atoi( buf + matches[6].rm_so );
+
+ // Hack a little to reduce heap fragmentation
+ {
+ char tmpType[strlen(buf + matches[3].rm_so) + 1];
+ char tmpDesc[strlen(buf + matches[7].rm_so) + 1];
+ strcpy(tmpType, buf + matches[3].rm_so);
+ strcpy(tmpDesc, buf + matches[7].rm_so);
+ free(buf);
+ Dest->Type = strdup( tmpType );
+ Dest->Desc = strdup( tmpDesc );
+ }
+
+ return 0;
+}
+
+/**
+ * \brief Fill the item information structure
+ * \return Boolean Failure
+ */
+void PopulateItemList(int Socket)
+{
+ char *buf;
+ int responseCode;
+
+ char *arrayType;
+ int count, i;
+ regmatch_t matches[4];
+
+ // Ask server for stock list
+ send(Socket, "ENUM_ITEMS\n", 11, 0);
+ buf = ReadLine(Socket);
+
+ //printf("Output: %s\n", buf);
+
+ responseCode = atoi(buf);
+ if( responseCode != 201 ) {
+ fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n", responseCode);
+ exit(RV_UNKNOWN_ERROR);
+ }
+
+ // - Get item list -
+
+ // Expected format:
+ // 201 Items <count>
+ // 202 Item <count>
+ RunRegex(&gArrayRegex, buf, 4, matches, "Malformed server response");
+
+ arrayType = &buf[ matches[2].rm_so ]; buf[ matches[2].rm_eo ] = '\0';
+ count = atoi( &buf[ matches[3].rm_so ] );
+
+ // Check array type
+ if( strcmp(arrayType, "Items") != 0 ) {
+ // What the?!
+ fprintf(stderr, "Unexpected array type, expected 'Items', got '%s'\n",
+ arrayType);
+ exit(RV_UNKNOWN_ERROR);
+ }
+ free(buf);
+
+ giNumItems = count;
+ gaItems = malloc( giNumItems * sizeof(tItem) );
+
+ // Fetch item information
+ for( i = 0; i < giNumItems; i ++ )
+ {
+ ReadItemInfo( Socket, &gaItems[i] );
+ }
+
+ // Read end of list
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ if( responseCode != 200 ) {
+ fprintf(stderr, "Unknown response from dispense server %i\n'%s'",
+ responseCode, buf
+ );
+ exit(-1);
+ }
+
+ free(buf);
+}
+
+
+/**
+ * \brief Get information on an item
+ * \return Boolean Failure
+ */
+int Dispense_ItemInfo(int Socket, const char *Type, int ID)
+{
+ tItem item;
+ int ret;
+
+ // Query
+ sendf(Socket, "ITEM_INFO %s:%i\n", Type, ID);
+
+ ret = ReadItemInfo(Socket, &item);
+ if(ret) return ret;
+
+ printf("%8s:%-2i %2i.%02i %s\n",
+ item.Type, item.ID,
+ item.Price/100, item.Price%100,
+ item.Desc);
+
+ free(item.Type);
+ free(item.Desc);
+
+ return 0;
+}
+
+/**
+ * \brief Dispense an item
+ * \return Boolean Failure
+ */
+int DispenseItem(int Socket, const char *Type, int ID)
+{
+ int ret, responseCode;
+ char *buf;
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ // Dispense!
+ sendf(Socket, "DISPENSE %s:%i\n", Type, ID);
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+ switch( responseCode )
+ {
+ case 200:
+ printf("Dispense OK\n");
+ ret = 0;
+ break;
+ case 401:
+ printf("Not authenticated\n");
+ ret = RV_PERMISSIONS;
+ break;
+ case 402:
+ printf("Insufficient balance\n");
+ ret = RV_BALANCE;
+ break;
+ case 406:
+ printf("Bad item name\n");
+ ret = RV_BAD_ITEM;
+ break;
+ case 500:
+ printf("Item failed to dispense, is the slot empty?\n");
+ ret = RV_SERVER_ERROR;
+ break;
+ case 501:
+ printf("Dispense not possible (slot empty/permissions)\n");
+ ret = RV_SERVER_ERROR;
+ break;
+ default:
+ printf("Unknown response code %i ('%s')\n", responseCode, buf);
+ ret = RV_UNKNOWN_ERROR;
+ break;
+ }
+
+ free(buf);
+ return ret;
+}
+
+/**
+ * \brief Alter a user's balance
+ */
+int Dispense_AlterBalance(int Socket, const char *Username, int Ammount, const char *Reason)
+{
+ char *buf;
+ int responseCode, rv = -1;
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ // Sanity
+ if( Ammount == 0 ) {
+ printf("An amount would be nice\n");
+ return RV_ARGUMENTS;
+ }
+
+ sendf(Socket, "ADD %s %i %s\n", Username, Ammount, Reason);
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 200:
+ rv = 0; // OK
+ break;
+ case 402:
+ fprintf(stderr, "Insufficient balance\n");
+ rv = RV_BAD_ITEM;
+ break;
+ case 403: // Not in coke
+ fprintf(stderr, "You are not in coke (sucker)\n");
+ rv = RV_PERMISSIONS;
+ break;
+ case 404: // Unknown user
+ fprintf(stderr, "Unknown user '%s'\n", Username);
+ rv = RV_INVALID_USER;
+ break;
+ default:
+ fprintf(stderr, "Unknown response code %i\n'%s'\n", responseCode, buf);
+ rv = RV_UNKNOWN_RESPONSE;
+ break;
+ }
+ free(buf);
+
+ return rv;
+}
+
+/**
+ * \brief Set a user's balance
+ * \note Only avaliable to dispense admins
+ */
+int Dispense_SetBalance(int Socket, const char *Username, int Balance, const char *Reason)
+{
+ char *buf;
+ int responseCode;
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ sendf(Socket, "SET %s %i %s\n", Username, Balance, Reason);
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+ free(buf);
+
+ switch(responseCode)
+ {
+ case 200: return 0; // OK
+ case 403: // Not in coke
+ fprintf(stderr, "You are not an admin\n");
+ return RV_PERMISSIONS;
+ case 404: // Unknown user
+ fprintf(stderr, "Unknown user '%s'\n", Username);
+ return RV_INVALID_USER;
+ default:
+ fprintf(stderr, "Unknown response code %i\n", responseCode);
+ return RV_UNKNOWN_RESPONSE;
+ }
+
+ return -1;
+}
+
+/**
+ * \brief Give money to another user
+ */
+int Dispense_Give(int Socket, const char *Username, int Ammount, const char *Reason)
+{
+ char *buf;
+ int responseCode;
+
+ if( Ammount < 0 ) {
+ printf("Sorry, you can only give, you can't take.\n");
+ return RV_ARGUMENTS;
+ }
+
+ // Fast return on zero
+ if( Ammount == 0 ) {
+ printf("Are you actually going to give any?\n");
+ return RV_ARGUMENTS;
+ }
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ sendf(Socket, "GIVE %s %i %s\n", Username, Ammount, Reason);
+
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+ free(buf);
+ switch(responseCode)
+ {
+ case 200:
+ printf("Give succeeded\n");
+ return RV_SUCCESS; // OK
+
+ case 402:
+ fprintf(stderr, "Insufficient balance\n");
+ return RV_BALANCE;
+
+ case 404: // Unknown user
+ fprintf(stderr, "Unknown user '%s'\n", Username);
+ return RV_INVALID_USER;
+
+ default:
+ fprintf(stderr, "Unknown response code %i\n", responseCode);
+ return RV_UNKNOWN_RESPONSE;
+ }
+
+ return -1;
+}
+
+int Dispense_Refund(int Socket, const char *Username, const char *Item, int PriceOverride)
+{
+ char *buf;
+ int responseCode, ret = -1;
+
+ // Check item id
+ if( RunRegex(&gUserItemIdentRegex, Item, 0, NULL, NULL) != 0 )
+ {
+ fprintf(stderr, "Error: Invalid item ID passed (should be <type>:<num>)\n");
+ return RV_ARGUMENTS;
+ }
+
+ // Check username (quick)
+ if( strchr(Username, ' ') || strchr(Username, '\n') )
+ {
+ fprintf(stderr, "Error: Username is invalid (no spaces or newlines please)\n");
+ return RV_ARGUMENTS;
+ }
+
+ // Send the query
+ sendf(Socket, "REFUND %s %s %i\n", Username, Item, PriceOverride);
+
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+ switch(responseCode)
+ {
+ case 200:
+ Dispense_ShowUser(Socket, Username); // Show destination account
+ ret = 0;
+ break;
+ case 403:
+ fprintf(stderr, "Refund access is only avaliable to coke members\n");
+ ret = RV_PERMISSIONS;
+ break;
+ case 404:
+ fprintf(stderr, "Unknown user '%s' passed\n", Username);
+ ret = RV_INVALID_USER;
+ break;
+ case 406:
+ fprintf(stderr, "Invalid item '%s' passed\n", Item);
+ ret = RV_BAD_ITEM;
+ break;
+ default:
+ fprintf(stderr, "Unknown response from server %i\n%s\n", responseCode, buf);
+ ret = -1;
+ break;
+ }
+ free(buf);
+ return ret;
+}
+
+/**
+ * \brief Donate money to the club
+ */
+int Dispense_Donate(int Socket, int Ammount, const char *Reason)
+{
+ char *buf;
+ int responseCode;
+
+ if( Ammount < 0 ) {
+ printf("Sorry, you can only give, you can't take.\n");
+ return -1;
+ }
+
+ // Fast return on zero
+ if( Ammount == 0 ) {
+ printf("Are you actually going to give any?\n");
+ return 1;
+ }
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ sendf(Socket, "DONATE %i %s\n", Ammount, Reason);
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+ free(buf);
+
+ switch(responseCode)
+ {
+ case 200: return 0; // OK
+
+ case 402:
+ fprintf(stderr, "Insufficient balance\n");
+ return 1;
+
+ default:
+ fprintf(stderr, "Unknown response code %i\n", responseCode);
+ return -1;
+ }
+
+ return -1;
+}
+
+/**
+ * \brief Enumerate users
+ */
+int Dispense_EnumUsers(int Socket)
+{
+ char *buf;
+ int responseCode;
+ int nUsers;
+ regmatch_t matches[4];
+
+ if( giMinimumBalance != INT_MIN ) {
+ if( giMaximumBalance != INT_MAX ) {
+ sendf(Socket, "ENUM_USERS min_balance:%i max_balance:%i\n", giMinimumBalance, giMaximumBalance);
+ }
+ else {
+ sendf(Socket, "ENUM_USERS min_balance:%i\n", giMinimumBalance);
+ }
+ }
+ else {
+ if( giMaximumBalance != INT_MAX ) {
+ sendf(Socket, "ENUM_USERS max_balance:%i\n", giMaximumBalance);
+ }
+ else {
+ sendf(Socket, "ENUM_USERS\n");
+ }
+ }
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 201: break; // Ok, length follows
+
+ default:
+ fprintf(stderr, "Unknown response code %i\n%s\n", responseCode, buf);
+ free(buf);
+ return -1;
+ }
+
+ // Get count (not actually used)
+ RunRegex(&gArrayRegex, buf, 4, matches, "Malformed server response");
+ nUsers = atoi( buf + matches[3].rm_so );
+ printf("%i users returned\n", nUsers);
+
+ // Free string
+ free(buf);
+
+ // Read returned users
+ do {
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ if( responseCode != 202 ) break;
+
+ _PrintUserLine(buf);
+ free(buf);
+ } while(responseCode == 202);
+
+ // Check final response
+ if( responseCode != 200 ) {
+ fprintf(stderr, "Unknown response code %i\n%s\n", responseCode, buf);
+ free(buf);
+ return -1;
+ }
+
+ free(buf);
+
+ return 0;
+}
+
+int Dispense_ShowUser(int Socket, const char *Username)
+{
+ char *buf;
+ int responseCode, ret;
+
+ sendf(Socket, "USER_INFO %s\n", Username);
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 202:
+ _PrintUserLine(buf);
+ ret = 0;
+ break;
+
+ case 404:
+ printf("Unknown user '%s'\n", Username);
+ ret = 1;
+ break;
+
+ default:
+ fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
+ ret = -1;
+ break;
+ }
+
+ free(buf);
+
+ return ret;
+}
+
+void _PrintUserLine(const char *Line)
+{
+ regmatch_t matches[6];
+ int bal;
+
+ RunRegex(&gUserInfoRegex, Line, 6, matches, "Malformed server response");
+ // 3: Username
+ // 4: Balance
+ // 5: Flags
+ {
+ int usernameLen = matches[3].rm_eo - matches[3].rm_so;
+ char username[usernameLen + 1];
+ int flagsLen = matches[5].rm_eo - matches[5].rm_so;
+ char flags[flagsLen + 1];
+
+ memcpy(username, Line + matches[3].rm_so, usernameLen);
+ username[usernameLen] = '\0';
+ memcpy(flags, Line + matches[5].rm_so, flagsLen);
+ flags[flagsLen] = '\0';
+
+ bal = atoi(Line + matches[4].rm_so);
+ printf("%-15s: $%8.02f (%s)\n", username, ((float)bal)/100, flags);
+ }
+}
+
+int Dispense_AddUser(int Socket, const char *Username)
+{
+ char *buf;
+ int responseCode, ret;
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ sendf(Socket, "USER_ADD %s\n", Username);
+
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 200:
+ printf("User '%s' added\n", Username);
+ ret = 0;
+ break;
+
+ case 403:
+ printf("Only wheel can add users\n");
+ ret = 1;
+ break;
+
+ case 404:
+ printf("User '%s' already exists\n", Username);
+ ret = 0;
+ break;
+
+ default:
+ fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
+ ret = -1;
+ break;
+ }
+
+ free(buf);
+
+ return ret;
+}
+
+int Dispense_SetUserType(int Socket, const char *Username, const char *TypeString, const char *Reason)
+{
+ char *buf;
+ int responseCode, ret;
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ // TODO: Pre-validate the string
+
+ sendf(Socket, "USER_FLAGS %s %s %s\n", Username, TypeString, Reason);
+
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 200:
+ printf("User '%s' updated\n", Username);
+ ret = 0;
+ break;
+
+ case 403:
+ printf("Only dispense admins can modify users\n");
+ ret = RV_PERMISSIONS;
+ break;
+
+ case 404:
+ printf("User '%s' does not exist\n", Username);
+ ret = RV_INVALID_USER;
+ break;
+
+ case 407:
+ printf("Flag string is invalid\n");
+ ret = RV_ARGUMENTS;
+ break;
+
+ default:
+ fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
+ ret = RV_UNKNOWN_RESPONSE;
+ break;
+ }
+
+ free(buf);
+
+ return ret;
+}
+
+int Dispense_SetItem(int Socket, const char *Type, int ID, int NewPrice, const char *NewName)
+{
+ char *buf;
+ int responseCode, ret;
+
+ // Check for a dry run
+ if( gbDryRun ) {
+ printf("Dry Run - No action\n");
+ return 0;
+ }
+
+ sendf(Socket, "UPDATE_ITEM %s:%i %i %s\n", Type, ID, NewPrice, NewName);
+
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 200:
+ printf("Item %s:%i updated\n", Type, ID);
+ ret = 0;
+ break;
+
+ case 403:
+ printf("Only coke members can modify the slots\n");
+ ret = RV_PERMISSIONS;
+ break;
+
+ case 406:
+ printf("Invalid item passed\n");
+ ret = RV_BAD_ITEM;
+ break;
+
+ default:
+ fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
+ ret = -1;
+ break;
+ }
+
+ free(buf);
+
+ return ret;
+}
+
+// ===
+// Helpers
+// ===
+char *ReadLine(int Socket)
+{
+ static char buf[BUFSIZ];
+ static int bufPos = 0;
+ static int bufValid = 0;
+ int len;
+ char *newline = NULL;
+ int retLen = 0;
+ char *ret = malloc(10);
+
+ #if DEBUG_TRACE_SERVER
+ printf("ReadLine: ");
+ fflush(stdout);
+ #endif
+
+ ret[0] = '\0';
+
+ while( !newline )
+ {
+ if( bufValid ) {
+ len = bufValid;
+ }
+ else {
+ len = recv(Socket, buf+bufPos, BUFSIZ-1-bufPos, 0);
+ if( len <= 0 ) {
+ free(ret);
+ return strdup("599 Client Connection Error\n");
+ }
+ }
+ buf[bufPos+len] = '\0';
+
+ newline = strchr( buf+bufPos, '\n' );
+ if( newline ) {
+ *newline = '\0';
+ }
+
+ retLen += strlen(buf+bufPos);
+ ret = realloc(ret, retLen + 1);
+ strcat( ret, buf+bufPos );
+
+ if( newline ) {
+ int newLen = newline - (buf+bufPos) + 1;
+ bufValid = len - newLen;
+ len = newLen;
+ }
+ if( len + bufPos == BUFSIZ - 1 ) bufPos = 0;
+ else bufPos += len;
+ }
+
+ #if DEBUG_TRACE_SERVER
+ printf("%i '%s'\n", retLen, ret);
+ #endif
+
+ return ret;
+}
+
+int sendf(int Socket, const char *Format, ...)
+{
+ va_list args;
+ int len;
+
+ va_start(args, Format);
+ len = vsnprintf(NULL, 0, Format, args);
+ va_end(args);
+
+ {
+ char buf[len+1];
+ va_start(args, Format);
+ vsnprintf(buf, len+1, Format, args);
+ va_end(args);
+
+ #if DEBUG_TRACE_SERVER
+ printf("sendf: %s", buf);
+ #endif
+
+ return send(Socket, buf, len, 0);
+ }
+}
+
--
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