#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
+
+#define USE_NCURSES_INTERFACE 0
+#define DEBUG_TRACE_SERVER 0
// === TYPES ===
typedef struct sItem {
- char *Ident;
+ char *Type;
+ int ID;
char *Desc;
int Price;
} tItem;
// === PROTOTYPES ===
- int sendf(int Socket, const char *Format, ...);
+ int main(int argc, char *argv[]);
+void ShowUsage(void);
+// --- GUI ---
+ int ShowNCursesUI(void);
+void ShowItemAt(int Row, int Col, int Width, int Index);
+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);
+void PopulateItemList(int Socket);
+ int DispenseItem(int Socket, int ItemID);
+ 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_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);
+// --- 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);
// === GLOBALS ===
char *gsDispenseServer = "localhost";
int giDispensePort = 11020;
+
tItem *gaItems;
int giNumItems;
-regex_t gArrayRegex;
-regex_t gItemRegex;
+regex_t gArrayRegex, gItemRegex, gSaltRegex, gUserInfoRegex;
+ int gbIsAuthenticated = 0;
+
+char *gsItemPattern; //!< Item pattern
+char *gsEffectiveUser; //!< '-u' Dispense as another user
+ int gbUseNCurses = 0; //!< '-G' Use the NCurses GUI?
+ int giMinimumBalance = INT_MIN; //!< '-m' Minumum balance for `dispense acct`
+ int giMaximumBalance = INT_MAX; //!< '-M' Maximum balance for `dispense acct`
// === CODE ===
int main(int argc, char *argv[])
{
int sock;
- int i, responseCode, len;
+ int i;
char buffer[BUFSIZ];
// -- Create regular expressions
// > Code Type Count ...
CompileRegex(&gArrayRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+([0-9]+)", REG_EXTENDED); //
// > Code Type Ident Price Desc
- CompileRegex(&gItemRegex, "^([0-9]{3})\\s+(.+?)\\s+(.+?)\\s+([0-9]+)\\s+(.+)$", REG_EXTENDED);
-
- // Connect to server
- sock = OpenConnection(gsDispenseServer, giDispensePort);
- if( sock < 0 ) return -1;
+ CompileRegex(&gItemRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+([A-Za-z]+):([0-9]+)\\s+([0-9]+)\\s+(.+)$", REG_EXTENDED);
+ // > Code 'SALT' salt
+ CompileRegex(&gSaltRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+(.+)$", REG_EXTENDED);
+ // > Code 'User' Username Balance Flags
+ CompileRegex(&gUserInfoRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+([^ ]+)\\s+(-?[0-9]+)\\s+(.+)$", REG_EXTENDED);
- // Determine what to do
- if( argc > 1 )
+ // Parse Arguments
+ for( i = 1; i < argc; i ++ )
{
- if( strcmp(argv[1], "acct") == 0 )
+ char *arg = argv[i];
+
+ if( arg[0] == '-' )
+ {
+ switch(arg[1])
+ {
+ case 'h':
+ case '?':
+ ShowUsage();
+ return 0;
+
+ case 'm': // Minimum balance
+ giMinimumBalance = atoi(argv[++i]);
+ break;
+ case 'M': // Maximum balance
+ giMaximumBalance = atoi(argv[++i]);
+ break;
+
+ case 'u': // Override User
+ gsEffectiveUser = argv[++i];
+ break;
+
+ case 'G': // Use GUI
+ gbUseNCurses = 1;
+ break;
+ }
+
+ continue;
+ }
+
+ //
+ // `dispense acct`
+ // -
+ if( strcmp(arg, "acct") == 0 )
{
- // Alter account
- // List accounts
+ // Connect to server
+ sock = OpenConnection(gsDispenseServer, giDispensePort);
+ if( sock < 0 ) return -1;
+
+ // List accounts?
+ if( i + 1 == argc ) {
+ Dispense_EnumUsers(sock);
+ return 0;
+ }
+
+ // argv[i+1]: Username
+
+ // Alter account?
+ if( i + 2 < argc )
+ {
+ if( i + 3 >= argc ) {
+ fprintf(stderr, "Error: `dispense acct' needs a reason\n");
+ exit(1);
+ }
+
+ // Authentication required
+ if( Authenticate(sock) )
+ return -1;
+
+ // argv[i+1]: Username
+ // argv[i+2]: Ammount
+ // argv[i+3]: Reason
+
+ if( argv[i+2][0] == '=' ) {
+ // Set balance
+ if( argv[i+2][1] != '0' && atoi(&argv[i+2][1]) == 0 ) {
+ fprintf(stderr, "Error: Invalid balance to be set\n");
+ exit(1);
+ }
+
+ Dispense_SetBalance(sock, argv[i+1], atoi(argv[i+2]+1), argv[i+3]);
+ }
+ else {
+ // Alter balance
+ Dispense_AlterBalance(sock, argv[i+1], atoi(argv[i+2]), argv[i+3]);
+ }
+ }
+
+ // Show user information
+ Dispense_ShowUser(sock, argv[i+1]);
+
+ close(sock);
+ return 0;
+ }
+ //
+ // `dispense give`
+ // - "Here, have some money."
+ if( strcmp(arg, "give") == 0 )
+ {
+ if( i + 3 >= argc ) {
+ fprintf(stderr, "`dispense give` takes three arguments\n");
+ ShowUsage();
+ return -1;
+ }
+ // TODO: `dispense give`
+
+ // argv[i+1]: Destination
+ // argv[i+2]: Ammount
+ // argv[i+3]: Reason
+
+ // Connect to server
+ sock = OpenConnection(gsDispenseServer, giDispensePort);
+ if( sock < 0 ) return -1;
+
+ // Authenticate
+ if( Authenticate(sock) )
+ return -1;
+
+ Dispense_Give(sock, argv[i+1], atoi(argv[i+2]), argv[i+3]);
+ return 0;
+ }
+ //
+ // `dispense user`
+ // - User administration (Admin Only)
+ if( strcmp(arg, "user") == 0 )
+ {
+ // Check argument count
+ if( i + 1 >= argc ) {
+ fprintf(stderr, "Error: `dispense user` requires arguments\n");
+ ShowUsage();
+ exit(1);
+ }
+
+ // Connect to server
+ sock = OpenConnection(gsDispenseServer, giDispensePort);
+ if( sock < 0 ) return -1;
+
+ // Attempt authentication
+ if( Authenticate(sock) )
+ return -1;
+
+ // Add new user?
+ if( strcmp(argv[i+1], "add") == 0 )
+ {
+ if( i + 2 >= argc ) {
+ fprintf(stderr, "Error: `dispense user add` requires an argument\n");
+ ShowUsage();
+ exit(1);
+ }
+
+ Dispense_AddUser(sock, argv[i+2]);
+ }
+ // Update a user
+ else if( strcmp(argv[i+1], "type") == 0 )
+ {
+ if( i + 3 >= argc ) {
+ fprintf(stderr, "Error: `dispense user type` requires two arguments\n");
+ ShowUsage();
+ exit(1);
+ }
+
+ Dispense_SetUserType(sock, argv[i+2], argv[i+3]);
+ }
+ else
+ {
+ fprintf(stderr, "Error: Unknown sub-command for `dispense user`\n");
+ ShowUsage();
+ exit(1);
+ }
+ return 0;
+ }
+
+ // Donation!
+ if( strcmp(arg, "donate") == 0 )
+ {
+ // Check argument count
+ if( i + 2 >= argc ) {
+ fprintf(stderr, "Error: `dispense donate` requires two arguments\n");
+ ShowUsage();
+ exit(1);
+ }
+
+ // Connect to server
+ sock = OpenConnection(gsDispenseServer, giDispensePort);
+ if( sock < 0 ) return -1;
+
+ // Attempt authentication
+ if( Authenticate(sock) )
+ return -1;
+
+ // Do donation
+ Dispense_Donate(sock, atoi(argv[i+1]), argv[i+1]);
+
return 0;
}
+
+ else {
+ // Item name / pattern
+ gsItemPattern = arg;
+ break;
+ }
}
-
- // Ask server for stock list
- send(sock, "ENUM_ITEMS\n", 11, 0);
- len = recv(sock, buffer, BUFSIZ-1, 0);
- buffer[len] = '\0';
- trim(buffer);
+ // Connect to server
+ sock = OpenConnection(gsDispenseServer, giDispensePort);
+ if( sock < 0 ) return -1;
- printf("Output: %s\n", buffer);
+ // Authenticate
+ Authenticate(sock);
+
+ // Get items
+ PopulateItemList(sock);
- responseCode = atoi(buffer);
- if( responseCode != 201 )
+ if( gsItemPattern )
{
- fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n", responseCode);
- return -1;
+ // TODO: Implement `dispense <name>`
+ printf("TODO: Implement `dispense <name>`\n");
+ i = -1;
}
-
- // Get item list
+ else if( gbUseNCurses )
{
- char *itemType, *itemStart;
- int count;
- regmatch_t matches[4];
-
- // Expected format: 201 Items <count> <item1> <item2> ...
- RunRegex(&gArrayRegex, buffer, 4, matches, "Malformed server response");
-
- itemType = &buffer[ matches[2].rm_so ]; buffer[ matches[2].rm_eo ] = '\0';
- count = atoi( &buffer[ matches[3].rm_so ] );
-
- // Check array type
- if( strcmp(itemType, "Items") != 0 ) {
- // What the?!
- fprintf(stderr, "Unexpected array type, expected 'Items', got '%s'\n",
- itemType);
- return -1;
+ i = ShowNCursesUI();
+ }
+ else
+ {
+ // Very basic dispense interface
+ for( i = 0; i < giNumItems; i ++ ) {
+ printf("%2i %s:%i\t%3i %s\n", i, gaItems[i].Type, gaItems[i].ID,
+ gaItems[i].Price, gaItems[i].Desc);
}
-
- itemStart = &buffer[ matches[3].rm_eo ];
-
- gaItems = malloc( count * sizeof(tItem) );
-
- for( giNumItems = 0; giNumItems < count && itemStart; giNumItems ++ )
+ printf(" q Quit\n");
+ for(;;)
{
- char *next = strchr( ++itemStart, ' ' );
- if( next ) *next = '\0';
- gaItems[giNumItems].Ident = strdup(itemStart);
- itemStart = next;
+ char *buf;
+
+ i = -1;
+
+ fgets(buffer, BUFSIZ, stdin);
+
+ buf = trim(buffer);
+
+ if( buf[0] == 'q' ) break;
+
+ i = atoi(buf);
+
+ if( i != 0 || buf[0] == '0' )
+ {
+ if( i < 0 || i >= giNumItems ) {
+ printf("Bad item %i (should be between 0 and %i)\n", i, giNumItems);
+ continue;
+ }
+ break;
+ }
}
}
+ // Check for a valid item ID
+ if( i >= 0 )
+ DispenseItem(sock, i);
+
+ close(sock);
+
+ return 0;
+}
+
+void ShowUsage(void)
+{
+ printf(
+ "Usage:\n"
+ " == Everyone ==\n"
+ " dispense\n"
+ " Show interactive list\n"
+ " dispense <item>\n"
+ " Dispense named item\n"
+ " dispense give <user> <ammount> \"<reason>\"\n"
+ " Give money to another user\n"
+ " dispense donate <ammount> \"<reason>\"\n"
+ " Donate to the club\n"
+ " == Coke members == \n"
+ " dispense acct [<user>]\n"
+ " Show user balances\n"
+ " dispense acct <user> [+-]<ammount> \"<reason>\"\n"
+ " Alter a account value\n"
+ " == Dispense administrators ==\n"
+ " dispense acct <user> =<ammount> \"<reason>\"\n"
+ " Set an account balance\n"
+ " dispense user add <user>\n"
+ " Create new coke account (Admins only)\n"
+ " dispense user type <user> <flags>\n"
+ " Alter a user's flags\n"
+ " <flags> is a comma-separated list of user, coke, admin or disabled\n"
+ " Flags are removed by preceding the name with '-' or '!'\n"
+ "\n"
+ "General Options:\n"
+ " -u <username>\n"
+ " Set a different user (Coke members only)\n"
+ " -h / -?\n"
+ " Show help text\n"
+ " -G\n"
+ " Use alternate GUI\n"
+ " -m <min balance>\n"
+ " -M <max balance>\n"
+ " Set the Maximum/Minimum balances shown in `dispense acct`\n"
+ );
+}
+
+// -------------------
+// --- NCurses GUI ---
+// -------------------
+/**
+ * \brief Render the NCurses UI
+ */
+int ShowNCursesUI(void)
+{
+ // TODO: ncurses interface (with separation between item classes)
+ // - Hmm... that would require standardising the item ID to be <class>:<index>
+ // Oh, why not :)
+ int ch;
+ int i, times;
+ int xBase, yBase;
+ const int displayMinWidth = 40;
+ const int displayMinItems = 8;
+ char *titleString = "Dispense";
+ int itemCount = displayMinItems;
+ int itemBase = 0;
+ int currentItem = 0;
+ int ret = -2; // -2: Used for marking "no return yet"
+
+ int height, width;
+
+ // Enter curses mode
+ initscr();
+ raw(); noecho();
- // Display the list for the user
- for( i = 0; i < giNumItems; i ++ )
- {
- regmatch_t matches[6];
-
- // Print item Ident
- printf("%2i %s\t", i, gaItems[i].Ident);
-
- // Get item info
- sendf(sock, "ITEM_INFO %s\n", gaItems[i].Ident);
- len = recv(sock, buffer, BUFSIZ-1, 0);
- buffer[len] = '\0';
- trim(buffer);
-
- responseCode = atoi(buffer);
- if( responseCode != 202 ) {
- fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n", responseCode);
- return -1;
- }
-
- RunRegex(&gItemRegex, buffer, 6, matches, "Malformed server response");
-
- buffer[ matches[3].rm_eo ] = '\0';
-
- gaItems[i].Price = atoi( buffer + matches[4].rm_so );
- gaItems[i].Desc = strdup( buffer + matches[5].rm_so );
-
- printf("%3i %s\n", gaItems[i].Price, gaItems[i].Desc);
- }
+ // Get item count
+ // - 6: randomly chosen (Need at least 3)
+ itemCount = LINES - 6;
+ if( itemCount > giNumItems )
+ itemCount = giNumItems;
+
+ // Get dimensions
+ height = itemCount + 3;
+ width = displayMinWidth;
+ // Get positions
+ xBase = COLS/2 - width/2;
+ yBase = LINES/2 - height/2;
- // and choose what to dispense
- for(;;)
+ for( ;; )
{
- char *buf;
-
- fgets(buffer, BUFSIZ, stdin);
-
- buf = trim(buffer);
-
- if( buf[0] == 'q' ) break;
-
- i = atoi(buf);
+ // Header
+ PrintAlign(yBase, xBase, width, "/", '-', titleString, '-', "\\");
- printf("buf = '%s', atoi(buf) = %i\n", buf, i);
-
- if( i != 0 || buf[0] == '0' )
+ // Items
+ for( i = 0; i < itemCount; i ++ )
{
- printf("i = %i\n", i);
+ move( yBase + 1 + i, xBase );
- if( i < 0 || i >= giNumItems ) {
- printf("Bad item (should be between 0 and %i)\n", giNumItems);
- continue;
+ if( currentItem == itemBase + i ) {
+ printw("| -> ");
+ }
+ else {
+ printw("| ");
}
- sendf(sock, "DISPENSE %s\n", gaItems[i].Ident);
-
- len = recv(sock, buffer, BUFSIZ-1, 0);
- buffer[len] = '\0';
- trim(buffer);
+ // Check for ... row
+ // - Oh god, magic numbers!
+ if( i == 0 && itemBase > 0 ) {
+ printw(" ...");
+ times = width-1 - 8 - 3;
+ while(times--) addch(' ');
+ }
+ else if( i == itemCount - 1 && itemBase < giNumItems - itemCount ) {
+ printw(" ...");
+ times = width-1 - 8 - 3;
+ while(times--) addch(' ');
+ }
+ // Show an item
+ else {
+ ShowItemAt( yBase + 1 + i, xBase + 5, width - 7, itemBase + i);
+ addch(' ');
+ }
- responseCode = atoi(buffer);
- switch( responseCode )
+ // Scrollbar (if needed)
+ if( giNumItems > itemCount ) {
+ if( i == 0 ) {
+ addch('A');
+ }
+ else if( i == itemCount - 1 ) {
+ addch('V');
+ }
+ else {
+ int percentage = itemBase * 100 / (giNumItems-itemCount);
+ if( i-1 == percentage*(itemCount-3)/100 ) {
+ addch('#');
+ }
+ else {
+ addch('|');
+ }
+ }
+ }
+ else {
+ addch('|');
+ }
+ }
+
+ // Footer
+ PrintAlign(yBase+height-2, xBase, width, "\\", '-', "", '-', "/");
+
+ // Get input
+ ch = getch();
+
+ if( ch == '\x1B' ) {
+ ch = getch();
+ if( ch == '[' ) {
+ ch = getch();
+
+ switch(ch)
+ {
+ case 'B':
+ //if( itemBase < giNumItems - (itemCount) )
+ // itemBase ++;
+ if( currentItem < giNumItems - 1 )
+ currentItem ++;
+ if( itemBase + itemCount - 1 <= currentItem && itemBase + itemCount < giNumItems )
+ itemBase ++;
+ break;
+ case 'A':
+ //if( itemBase > 0 )
+ // itemBase --;
+ if( currentItem > 0 )
+ currentItem --;
+ if( itemBase + 1 > currentItem && itemBase > 0 )
+ itemBase --;
+ break;
+ }
+ }
+ else {
+
+ }
+ }
+ else {
+ switch(ch)
{
- case 200:
- printf("Dispense OK\n");
- break;
- case 401:
- printf("Not authenticated\n");
- break;
- case 402:
- printf("Insufficient balance\n");
- break;
- case 406:
- printf("Bad item name, bug report\n");
+ case '\n':
+ ret = currentItem;
break;
- case 500:
- printf("Item failed to dispense, is the slot empty?\n");
- break;
- default:
- printf("Unknown response code %i\n", responseCode);
+ case 'q':
+ ret = -1; // -1: Return with no dispense
break;
}
- break;
+ // Check if the return value was changed
+ if( ret != -2 ) break;
}
+
}
+
+
+ // Leave
+ endwin();
+ return ret;
+}
- close(sock);
+/**
+ * \brief Show item \a Index at (\a Col, \a Row)
+ * \note Part of the NCurses UI
+ */
+void ShowItemAt(int Row, int Col, int Width, int Index)
+{
+ int _x, _y, times;
+ char *name;
+ int price;
+
+ move( Row, Col );
+
+ if( Index < 0 || Index >= giNumItems ) {
+ name = "OOR";
+ price = 0;
+ }
+ else {
+ name = gaItems[Index].Desc;
+ price = gaItems[Index].Price;
+ }
- return 0;
+ printw("%02i %s", Index, name);
+
+ getyx(stdscr, _y, _x);
+ // Assumes max 4 digit prices
+ times = Width - 4 - (_x - Col); // TODO: Better handling for large prices
+ while(times--) addch(' ');
+ printw("%4i", price);
}
-// === HELPERS ===
-int sendf(int Socket, const char *Format, ...)
+/**
+ * \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;
- int len;
- va_start(args, Format);
- len = vsnprintf(NULL, 0, Format, 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 buf[len+1];
- va_start(args, Format);
- vsnprintf(buf, len+1, Format, args);
- va_end(args);
-
- return send(Socket, buf, len, 0);
+ char tmp[lLen+1];
+ vsnprintf(tmp, lLen+1, Left, args);
+ addstr(tmp);
+ }
+ // - Left padding
+ times = Width/2 - mLen/2 - lLen;
+ while(times--) addch(Pad1);
+ // - Middle
+ {
+ char tmp[mLen+1];
+ vsnprintf(tmp, mLen+1, Mid, args);
+ addstr(tmp);
+ }
+ // - Right Padding
+ times = Width/2 - mLen/2 - rLen;
+ 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;
return -1;
}
+ #if USE_AUTOAUTH
+ {
+ struct sockaddr_in localAddr;
+ memset(&localAddr, 0, sizeof(localAddr));
+ localAddr.sin_family = AF_INET; // IPv4
+ localAddr.sin_port = 1023; // IPv4
+ // Attempt to bind to low port for autoauth
+ bind(sock, &localAddr, sizeof(localAddr));
+ }
+ #endif
+
if( connect(sock, (struct sockaddr *) &serverAddr, sizeof(serverAddr)) < 0 ) {
fprintf(stderr, "Failed to connect to server\n");
return -1;
return sock;
}
+/**
+ * \brief Authenticate with the server
+ * \return Boolean Failure
+ */
+int Authenticate(int Socket)
+{
+ struct passwd *pwd;
+ char *buf;
+ int responseCode;
+ char salt[32];
+ int i;
+ regmatch_t matches[4];
+
+ if( gbIsAuthenticated ) return 0;
+
+ // Get user name
+ pwd = getpwuid( getuid() );
+
+ // Attempt automatic authentication
+ sendf(Socket, "AUTOAUTH %s\n", pwd->pw_name);
+
+ // Check if it worked
+ buf = ReadLine(Socket);
+
+ responseCode = atoi(buf);
+ switch( responseCode )
+ {
+ case 200: // Autoauth succeeded, return
+ free(buf);
+ break;
+
+ case 401: // Untrusted, attempt password authentication
+ free(buf);
+
+ sendf(Socket, "USER %s\n", pwd->pw_name);
+ printf("Using username %s\n", pwd->pw_name);
+
+ 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 -1; // 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(pwd->pw_name)+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, pwd->pw_name);
+ 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 2; // 2 = Bad Password
+ break;
+
+ case 404: // Bad Username
+ fprintf(stderr, "Bad Username '%s'\n", pwd->pw_name);
+ free(buf);
+ return 1;
+
+ default:
+ fprintf(stderr, "Unkown response code %i from server\n", responseCode);
+ printf("%s\n", buf);
+ free(buf);
+ return -1;
+ }
+
+ // Set effective user
+ if( gsEffectiveUser ) {
+ 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 -1;
+
+ case 404:
+ printf("Invalid user selected\n");
+ free(buf);
+ return -1;
+
+ default:
+ fprintf(stderr, "Unkown response code %i from server\n", responseCode);
+ printf("%s\n", buf);
+ free(buf);
+ exit(-1);
+ }
+
+ free(buf);
+ }
+
+ gbIsAuthenticated = 1;
+
+ return 0;
+}
+
+
+/**
+ * \brief Fill the item information structure
+ * \return Boolean Failure
+ */
+void PopulateItemList(int Socket)
+{
+ char *buf;
+ int responseCode;
+
+ char *itemType, *itemStart;
+ 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(-1);
+ }
+
+ // - Get item list -
+
+ // Expected format:
+ // 201 Items <count>
+ // 202 Item <count>
+ RunRegex(&gArrayRegex, buf, 4, matches, "Malformed server response");
+
+ itemType = &buf[ matches[2].rm_so ]; buf[ matches[2].rm_eo ] = '\0';
+ count = atoi( &buf[ matches[3].rm_so ] );
+
+ // Check array type
+ if( strcmp(itemType, "Items") != 0 ) {
+ // What the?!
+ fprintf(stderr, "Unexpected array type, expected 'Items', got '%s'\n",
+ itemType);
+ exit(-1);
+ }
+
+ itemStart = &buf[ matches[3].rm_eo ];
+
+ free(buf);
+
+ giNumItems = count;
+ gaItems = malloc( giNumItems * sizeof(tItem) );
+
+ // Fetch item information
+ for( i = 0; i < giNumItems; i ++ )
+ {
+ regmatch_t matches[7];
+
+ // Get item info
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ if( responseCode != 202 ) {
+ fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n", responseCode);
+ exit(-1);
+ }
+
+ RunRegex(&gItemRegex, buf, 7, matches, "Malformed server response");
+
+ buf[ matches[3].rm_eo ] = '\0';
+
+ gaItems[i].Type = strdup( buf + matches[3].rm_so );
+ gaItems[i].ID = atoi( buf + matches[4].rm_so );
+ gaItems[i].Price = atoi( buf + matches[5].rm_so );
+ gaItems[i].Desc = strdup( buf + matches[6].rm_so );
+
+ free(buf);
+ }
+
+ // 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 Dispense an item
+ * \return Boolean Failure
+ */
+int DispenseItem(int Socket, int ItemID)
+{
+ int ret, responseCode;
+ char *buf;
+
+ if( ItemID < 0 || ItemID > giNumItems ) return -1;
+
+ // Dispense!
+ sendf(Socket, "DISPENSE %s:%i\n", gaItems[ItemID].Type, gaItems[ItemID].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 = 1;
+ break;
+ case 402:
+ printf("Insufficient balance\n");
+ ret = 1;
+ break;
+ case 406:
+ printf("Bad item name, bug report\n");
+ ret = 1;
+ break;
+ case 500:
+ printf("Item failed to dispense, is the slot empty?\n");
+ ret = 1;
+ break;
+ case 501:
+ printf("Dispense not possible (slot empty/permissions)\n");
+ ret = 1;
+ break;
+ default:
+ printf("Unknown response code %i ('%s')\n", responseCode, buf);
+ ret = -2;
+ 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;
+
+ sendf(Socket, "ADD %s %i %s\n", Username, 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;
+ case 403: // Not in coke
+ fprintf(stderr, "You are not in coke (sucker)\n");
+ return 1;
+ case 404: // Unknown user
+ fprintf(stderr, "Unknown user '%s'\n", Username);
+ return 2;
+ default:
+ fprintf(stderr, "Unknown response code %i\n", responseCode);
+ return -1;
+ }
+
+ return -1;
+}
+
+/**
+ * \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;
+
+ 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 1;
+ case 404: // Unknown user
+ fprintf(stderr, "Unknown user '%s'\n", Username);
+ return 2;
+ default:
+ fprintf(stderr, "Unknown response code %i\n", responseCode);
+ return -1;
+ }
+
+ 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 -1;
+ }
+
+ // Fast return on zero
+ if( Ammount == 0 ) {
+ printf("Are you actually going to give any?\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: return 0; // OK
+
+ case 402:
+ fprintf(stderr, "Insufficient balance\n");
+ return 1;
+
+ case 404: // Unknown user
+ fprintf(stderr, "Unknown user '%s'\n", Username);
+ return 2;
+
+ default:
+ fprintf(stderr, "Unknown response code %i\n", responseCode);
+ return -1;
+ }
+
+ return -1;
+}
+
+
+/**
+ * \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 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: $%4i.%02i (%s)\n", username, bal/100, abs(bal)%100, flags);
+ }
+}
+
+int Dispense_AddUser(int Socket, const char *Username)
+{
+ char *buf;
+ int responseCode, ret;
+
+ 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)
+{
+ char *buf;
+ int responseCode, ret;
+
+ // TODO: Pre-validate the string
+
+ sendf(Socket, "USER_FLAGS %s %s\n", Username, TypeString);
+
+ buf = ReadLine(Socket);
+ responseCode = atoi(buf);
+
+ switch(responseCode)
+ {
+ case 200:
+ printf("User '%s' updated\n", Username);
+ ret = 0;
+ break;
+
+ case 403:
+ printf("Only wheel can modify users\n");
+ ret = 1;
+ break;
+
+ case 404:
+ printf("User '%s' does not exist\n", Username);
+ ret = 0;
+ break;
+
+ case 407:
+ printf("Flag string is invalid\n");
+ ret = 0;
+ 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: ");
+ #endif
+ fflush(stdout);
+
+ ret[0] = '\0';
+
+ while( !newline )
+ {
+ if( bufValid ) {
+ len = bufValid;
+ }
+ else {
+ len = recv(Socket, buf+bufPos, BUFSIZ-1-bufPos, 0);
+ 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;
+ bufPos += newLen;
+ }
+ if( len + bufPos == BUFSIZ - 1 ) bufPos = 0;
+ }
+
+ #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;
git.ucc.asn.au / tpg / opendispense2.git / blobdiff
UCC git Repository :: git.ucc.asn.au