3 * UCC (University [of WA] Computer Club) Electronic Accounting System
6 * main.c - Core and Initialisation
8 * This file is licenced under the 3-clause BSD Licence. See the file
9 * COPYING for full details.
14 #include <ctype.h> // isspace
20 #include <unistd.h> // close
21 #include <netdb.h> // gethostbyname
22 #include <pwd.h> // getpwuids
23 #include <sys/socket.h>
24 #include <netinet/in.h>
25 #include <arpa/inet.h>
26 //#include <openssl/sha.h> // SHA1
28 #define USE_NCURSES_INTERFACE 0
29 #define DEBUG_TRACE_SERVER 0
30 #define USE_AUTOAUTH 1
32 #define MAX_TXT_ARGS 5 // Maximum number of textual arguments (including command)
33 #define DISPENSE_MULTIPLE_MAX 20 // Maximum argument to -c
37 UI_MODE_BASIC, // Non-NCurses
52 RV_SERVER_ERROR, // Generic for 5xx codes
53 RV_UNKNOWN_ERROR = -1,
55 RV_UNKNOWN_RESPONSE = -3,
59 typedef struct sItem {
62 int Status; // 0: Availiable, 1: Sold out, -1: Error
69 int main(int argc, char *argv[]);
71 int ShowNCursesUI(void);
72 int ShowItemAt(int Row, int Col, int Width, int Index, int bHilighted);
73 void PrintAlign(int Row, int Col, int Width, const char *Left, char Pad1, const char *Mid, char Pad2, const char *Right, ...);
74 // --- Coke Server Communication ---
75 int OpenConnection(const char *Host, int Port);
76 int Authenticate(int Socket);
77 int GetUserBalance(int Socket);
78 void PopulateItemList(int Socket);
79 int Dispense_ItemInfo(int Socket, const char *Type, int ID);
80 int DispenseItem(int Socket, const char *Type, int ID);
81 int Dispense_AlterBalance(int Socket, const char *Username, int Ammount, const char *Reason);
82 int Dispense_SetBalance(int Socket, const char *Username, int Balance, const char *Reason);
83 int Dispense_Give(int Socket, const char *Username, int Ammount, const char *Reason);
84 int Dispense_Refund(int Socket, const char *Username, const char *Item, int PriceOverride);
85 int Dispense_Donate(int Socket, int Ammount, const char *Reason);
86 int Dispense_EnumUsers(int Socket);
87 int Dispense_ShowUser(int Socket, const char *Username);
88 void _PrintUserLine(const char *Line);
89 int Dispense_AddUser(int Socket, const char *Username);
90 int Dispense_SetUserType(int Socket, const char *Username, const char *TypeString, const char *Reason);
91 int Dispense_SetItem(int Socket, const char *Type, int ID, int NewPrice, const char *NewName);
93 char *ReadLine(int Socket);
94 int sendf(int Socket, const char *Format, ...);
95 char *trim(char *string);
96 int RunRegex(regex_t *regex, const char *string, int nMatches, regmatch_t *matches, const char *errorMessage);
97 void CompileRegex(regex_t *regex, const char *pattern, int flags);
100 char *gsDispenseServer = "merlo.ucc.gu.uwa.edu.au";
101 int giDispensePort = 11020;
105 regex_t gArrayRegex, gItemRegex, gSaltRegex, gUserInfoRegex, gUserItemIdentRegex;
106 int gbIsAuthenticated = 0;
108 char *gsItemPattern; //!< Item pattern
109 char *gsEffectiveUser; //!< '-u' Dispense as another user
111 int giUIMode = UI_MODE_STANDARD;
112 int gbDryRun = 0; //!< '-n' Read-only
113 int gbDisallowSelectWithoutBalance = 1; //!< Don't allow items to be hilighted if not affordable
115 int giMinimumBalance = INT_MIN; //!< '-m' Minumum balance for `dispense acct`
116 int giMaximumBalance = INT_MAX; //!< '-M' Maximum balance for `dispense acct`
118 char *gsUserName; //!< User that dispense will happen as
119 char *gsUserFlags; //!< User's flag set
120 int giUserBalance = -1; //!< User balance (set by Authenticate)
121 int giDispenseCount = 1; //!< Number of dispenses to do
123 char *gsTextArgs[MAX_TXT_ARGS];
129 printf( "Usage:\n" );
130 if( giTextArgc == 0 )
134 " Show interactive list\n"
135 " dispense <name>|<index>|<itemid>\n"
136 " Dispense named item (<name> matches if it is a unique prefix)\n"
138 " Show the finger output\n"
140 if( giTextArgc == 0 || strcmp(gsTextArgs[0], "give") == 0 )
142 " dispense give <user> <amount> \"<reason>\"\n"
143 " Give money to another user\n"
146 if( giTextArgc == 0 || strcmp(gsTextArgs[0], "donate") == 0 )
148 " dispense donate <amount> \"<reason>\"\n"
149 " Donate to the club\n"
151 if( giTextArgc == 0 || strcmp(gsTextArgs[0], "iteminfo") == 0 )
153 " dispense iteminfo <itemid>\n"
154 " Get the name and price for an item\n"
156 // if( giTextArgc == 0 || strcmp(gsTextArgs[0], "enumitems") == 0 )
158 // " dispense enumitems\n"
159 // " List avaliable items\n"
161 if( giTextArgc == 0 )
162 printf(" == Coke members == \n");
163 if( giTextArgc == 0 || strcmp(gsTextArgs[0], "acct") == 0 )
165 " dispense acct [<user>]\n"
166 " Show user balances\n"
167 " dispense acct <user> [+-]<amount> \"<reason>\"\n"
168 " Alter a account value\n"
169 " dispense acct <user> =<amount> \"<reason>\"\n"
170 " Set an account balance\n"
172 if( giTextArgc == 0 || strcmp(gsTextArgs[0], "refund") == 0 )
174 " dispense refund <user> <itemid> [<price>]\n"
175 " Refund an item to a user (with optional price override)\n"
176 " Item IDs can be seen in the cokelog (in the brackets after the item name)\n"
177 " e.g. coke:6 for a coke, snack:33 for slot 33 of the snack machine\n"
179 if( giTextArgc == 0 || strcmp(gsTextArgs[0], "slot") == 0 )
181 " dispense slot <itemid> <price> <name>\n"
182 " Rename/Re-price a slot\n"
184 if( giTextArgc == 0 )
185 printf(" == Dispense administrators ==\n");
186 if( giTextArgc == 0 || strcmp(gsTextArgs[0], "user") == 0 )
188 " dispense user add <user>\n"
189 " Create new account\n"
190 " dispense user type <user> <flags> <reason>\n"
191 " Alter a user's flags\n"
192 " <flags> is a comma-separated list of user, coke, admin, internal or disabled\n"
193 " Flags are removed by preceding the name with '-' or '!'\n"
195 if( giTextArgc == 0 )
199 " Dispense multiple times\n"
201 " Set a different user (Coke members only)\n"
205 " Use simple textual interface (instead of ncurses)\n"
207 " Dry run - Do not actually do dispenses\n"
208 " -m <min balance>\n"
209 " -M <max balance>\n"
210 " Set the Maximum/Minimum balances shown in `dispense acct`\n"
213 " Item ID of the form <type>:<num> where <type> is a non-empty string of alpha-numeric characters, and <num> is a non-negative integer\n"
219 int main(int argc, char *argv[])
227 // -- Create regular expressions
228 // > Code Type Count ...
229 CompileRegex(&gArrayRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+([0-9]+)", REG_EXTENDED); //
230 // > Code Type Ident Status Price Desc
231 CompileRegex(&gItemRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+([A-Za-z]+):([0-9]+)\\s+(avail|sold|error)\\s+([0-9]+)\\s+(.+)$", REG_EXTENDED);
232 // > Code 'SALT' salt
233 CompileRegex(&gSaltRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+(.+)$", REG_EXTENDED);
234 // > Code 'User' Username Balance Flags
235 CompileRegex(&gUserInfoRegex, "^([0-9]{3})\\s+([A-Za-z]+)\\s+([^ ]+)\\s+(-?[0-9]+)\\s+(.+)$", REG_EXTENDED);
237 CompileRegex(&gUserItemIdentRegex, "^([A-Za-z]+):([0-9]+)$", REG_EXTENDED);
240 for( i = 1; i < argc; i ++ )
254 if( i > 2 && strcmp(argv[i-1], "type") == 0 )
256 if( i + 1 >= argc ) {
257 fprintf(stderr, "%s: -c takes an argument\n", argv[0]);
261 giDispenseCount = atoi(argv[++i]);
262 if( giDispenseCount < 1 || giDispenseCount > DISPENSE_MULTIPLE_MAX ) {
263 fprintf(stderr, "Sorry, only 1-20 can be passed to -c (safety)\n");
269 case 'm': // Minimum balance
270 if( i + 1 >= argc ) {
271 fprintf(stderr, "%s: -m takes an argument\n", argv[0]);
275 giMinimumBalance = atoi(argv[++i]);
277 case 'M': // Maximum balance
278 if( i + 1 >= argc ) {
279 fprintf(stderr, "%s: -M takes an argument\n", argv[0]);
283 giMaximumBalance = atoi(argv[++i]);
286 case 'u': // Override User
287 if( i + 1 >= argc ) {
288 fprintf(stderr, "%s: -u takes an argument\n", argv[0]);
292 gsEffectiveUser = argv[++i];
295 case 'H': // Override remote host
296 if( i + 1 >= argc ) {
297 fprintf(stderr, "%s: -H takes an argument\n", argv[0]);
301 gsDispenseServer = argv[++i];
303 case 'P': // Override remote port
304 if( i + 1 >= argc ) {
305 fprintf(stderr, "%s: -P takes an argument\n", argv[0]);
309 giDispensePort = atoi(argv[++i]);
312 // Set slot name/price
314 if( giTextArgc != 0 ) {
315 fprintf(stderr, "%s: -s must appear before other arguments\n", argv[0]);
319 gsTextArgs[0] = "slot"; // HACK!!
323 case 'G': // Don't use GUI
324 giUIMode = UI_MODE_BASIC;
326 case 'D': // Drinks only
327 giUIMode = UI_MODE_DRINKSONLY;
329 case 'n': // Dry Run / read-only
333 if( strcmp(argv[i], "--help") == 0 ) {
337 else if( strcmp(argv[i], "--dry-run") == 0 ) {
340 else if( strcmp(argv[i], "--drinks-only") == 0 ) {
341 giUIMode = UI_MODE_DRINKSONLY;
343 else if( strcmp(argv[i], "--can-select-all") == 0 ) {
344 gbDisallowSelectWithoutBalance = 0;
347 fprintf(stderr, "%s: Unknown switch '%s'\n", argv[0], argv[i]);
353 // The first argument is not allowed to begin with 'i'
354 // (catches most bad flags)
355 if( giTextArgc == 0 ) {
356 fprintf(stderr, "%s: Unknown switch '%s'\n", argv[0], argv[i]);
360 if( giTextArgc == MAX_TXT_ARGS )
362 fprintf(stderr, "ERROR: Too many arguments\n");
365 gsTextArgs[giTextArgc++] = argv[i];
372 if( giTextArgc == MAX_TXT_ARGS )
374 fprintf(stderr, "ERROR: Too many arguments\n");
378 gsTextArgs[giTextArgc++] = argv[i];
385 if( strcmp(gsTextArgs[0], "finger") == 0 )
388 sock = OpenConnection(gsDispenseServer, giDispensePort);
389 if( sock < 0 ) return RV_SOCKET_ERROR;
392 PopulateItemList(sock);
394 printf("The UCC Coke machine.\n\n");
396 // Only get coke slot statuses
397 for( i = 0; i <= 6; i ++ )
400 switch(gaItems[i].Status)
402 case 0: status = "Avail"; break;
403 case 1: status = "Sold "; break;
408 printf("%i - %s %3i %s\n", gaItems[i].ID, status, gaItems[i].Price, gaItems[i].Desc);
412 printf("\nMay your pink fish bing into the distance.\n");
420 if( strcmp(gsTextArgs[0], "acct") == 0 )
423 sock = OpenConnection(gsDispenseServer, giDispensePort);
424 if( sock < 0 ) return RV_SOCKET_ERROR;
426 if( giTextArgc == 1 ) {
427 ret = Dispense_EnumUsers(sock);
432 // gsTextArgs[1]: Username
435 if( giTextArgc != 2 )
437 if( giTextArgc != 4 ) {
438 fprintf(stderr, "`dispense acct` requires a reason\n");
443 // Authentication required
444 ret = Authenticate(sock);
447 // gsTextArgs[1]: Username
448 // gsTextArgs[2]: Ammount
449 // gsTextArgs[3]: Reason
451 if( gsTextArgs[2][0] == '=' ) {
453 if( gsTextArgs[2][1] != '0' && atoi(gsTextArgs[2]+1) == 0 ) {
454 fprintf(stderr, "Error: Invalid balance to be set\n");
458 ret = Dispense_SetBalance(sock, gsTextArgs[1], atoi(gsTextArgs[2]+1), gsTextArgs[3]);
462 ret = Dispense_AlterBalance(sock, gsTextArgs[1], atoi(gsTextArgs[2]), gsTextArgs[3]);
471 // Show user information
472 ret = Dispense_ShowUser(sock, gsTextArgs[1]);
479 // - "Here, have some money."
480 else if( strcmp(gsTextArgs[0], "give") == 0 )
482 if( giTextArgc != 4 ) {
483 fprintf(stderr, "`dispense give` takes three arguments\n");
488 // gsTextArgs[1]: Destination
489 // gsTextArgs[2]: Ammount
490 // gsTextArgs[3]: Reason
493 sock = OpenConnection(gsDispenseServer, giDispensePort);
494 if( sock < 0 ) return RV_SOCKET_ERROR;
497 ret = Authenticate(sock);
500 ret = Dispense_Give(sock, gsTextArgs[1], atoi(gsTextArgs[2]), gsTextArgs[3]);
508 // - User administration (Admin Only)
509 if( strcmp(gsTextArgs[0], "user") == 0 )
511 // Check argument count
512 if( giTextArgc == 1 ) {
513 fprintf(stderr, "Error: `dispense user` requires arguments\n");
519 sock = OpenConnection(gsDispenseServer, giDispensePort);
520 if( sock < 0 ) return RV_SOCKET_ERROR;
522 // Attempt authentication
523 ret = Authenticate(sock);
527 if( strcmp(gsTextArgs[1], "add") == 0 )
529 if( giTextArgc != 3 ) {
530 fprintf(stderr, "Error: `dispense user add` requires an argument\n");
535 ret = Dispense_AddUser(sock, gsTextArgs[2]);
538 else if( strcmp(gsTextArgs[1], "type") == 0 || strcmp(gsTextArgs[1], "flags") == 0 )
540 if( giTextArgc < 4 || giTextArgc > 5 ) {
541 fprintf(stderr, "Error: `dispense user type` requires two arguments\n");
546 if( giTextArgc == 4 )
547 ret = Dispense_SetUserType(sock, gsTextArgs[2], gsTextArgs[3], "");
549 ret = Dispense_SetUserType(sock, gsTextArgs[2], gsTextArgs[3], gsTextArgs[4]);
553 fprintf(stderr, "Error: Unknown sub-command for `dispense user`\n");
561 else if( strcmp(gsTextArgs[0], "donate") == 0 )
563 // Check argument count
564 if( giTextArgc != 3 ) {
565 fprintf(stderr, "Error: `dispense donate` requires two arguments\n");
571 sock = OpenConnection(gsDispenseServer, giDispensePort);
572 if( sock < 0 ) return RV_SOCKET_ERROR;
574 // Attempt authentication
575 ret = Authenticate(sock);
579 ret = Dispense_Donate(sock, atoi(gsTextArgs[1]), gsTextArgs[2]);
586 else if( strcmp(gsTextArgs[0], "refund") == 0 )
589 // Check argument count
590 if( giTextArgc != 3 && giTextArgc != 4 ) {
591 fprintf(stderr, "Error: `dispense refund` takes 2 or 3 arguments\n");
597 sock = OpenConnection(gsDispenseServer, giDispensePort);
598 if(sock < 0) return RV_SOCKET_ERROR;
600 // Attempt authentication
601 ret = Authenticate(sock);
604 if( giTextArgc == 4 ) {
605 price = atoi(gsTextArgs[3]);
607 fprintf(stderr, "Error: Override price is invalid (should be > 0)\n");
612 // Username, Item, cost
613 ret = Dispense_Refund(sock, gsTextArgs[1], gsTextArgs[2], price);
619 // Query an item price
620 else if( strcmp(gsTextArgs[0], "iteminfo") == 0 )
622 regmatch_t matches[3];
625 // Check argument count
626 if( giTextArgc != 2 ) {
627 fprintf(stderr, "Error: `dispense iteminfo` requires an argument\n");
632 if( RunRegex(&gUserItemIdentRegex, gsTextArgs[1], 3, matches, NULL) != 0 ) {
633 fprintf(stderr, "Error: Invalid item ID passed (<type>:<id> expected)\n");
636 type = gsTextArgs[1] + matches[1].rm_so;
637 gsTextArgs[1][ matches[1].rm_eo ] = '\0';
638 id = atoi( gsTextArgs[1] + matches[2].rm_so );
640 sock = OpenConnection(gsDispenseServer, giDispensePort);
641 if( sock < 0 ) return RV_SOCKET_ERROR;
643 ret = Dispense_ItemInfo(sock, type, id);
648 else if( strcmp(gsTextArgs[0], "slot") == 0 )
650 regmatch_t matches[3];
651 char *item_type, *newname;
655 if( giTextArgc != 4 ) {
656 fprintf(stderr, "Error: `dispense slot` takes three arguments\n");
662 if( RunRegex(&gUserItemIdentRegex, gsTextArgs[1], 3, matches, NULL) != 0 ) {
663 fprintf(stderr, "Error: Invalid item ID passed (<type>:<id> expected)\n");
666 item_type = gsTextArgs[1] + matches[1].rm_so;
667 gsTextArgs[1][ matches[1].rm_eo ] = '\0';
668 item_id = atoi( gsTextArgs[1] + matches[2].rm_so );
671 price = atoi( gsTextArgs[2] );
672 if( price <= 0 && gsTextArgs[2][0] != '0' ) {
673 fprintf(stderr, "Error: Invalid price passed (must be >= 0)\n");
678 newname = gsTextArgs[3];
682 for( pos = newname; *pos; pos ++ )
684 if( !isalnum(*pos) && *pos != ' ' ) {
685 fprintf(stderr, "Error: You should only have letters, numbers and spaces in an item name\n");
691 // Connect & Authenticate
692 sock = OpenConnection(gsDispenseServer, giDispensePort);
693 if( sock < 0 ) return RV_SOCKET_ERROR;
694 ret = Authenticate(sock);
697 ret = Dispense_SetItem(sock, item_type, item_id, price, newname);
702 // Item name / pattern
705 gsItemPattern = gsTextArgs[0];
709 sock = OpenConnection(gsDispenseServer, giDispensePort);
710 if( sock < 0 ) return RV_SOCKET_ERROR;
712 // Get the user's balance
713 ret = GetUserBalance(sock);
717 PopulateItemList(sock);
719 // Disconnect from server
722 if( gsItemPattern && gsItemPattern[0] )
724 regmatch_t matches[3];
726 if( strcmp(gsItemPattern, "door") == 0 )
728 // Connect, Authenticate, dispense and close
729 sock = OpenConnection(gsDispenseServer, giDispensePort);
730 if( sock < 0 ) return RV_SOCKET_ERROR;
731 ret = Authenticate(sock);
733 ret = DispenseItem(sock, "door", 0);
737 // Item id (<type>:<num>)
738 else if( RunRegex(&gUserItemIdentRegex, gsItemPattern, 3, matches, NULL) == 0 )
743 // Get and finish ident
744 ident = gsItemPattern + matches[1].rm_so;
745 gsItemPattern[matches[1].rm_eo] = '\0';
747 id = atoi( gsItemPattern + matches[2].rm_so );
749 // Connect, Authenticate, dispense and close
750 sock = OpenConnection(gsDispenseServer, giDispensePort);
751 if( sock < 0 ) return RV_SOCKET_ERROR;
753 Dispense_ItemInfo(sock, ident, id);
755 ret = Authenticate(sock);
757 ret = DispenseItem(sock, ident, id);
761 // Item number (6 = coke)
762 else if( strcmp(gsItemPattern, "0") == 0 || atoi(gsItemPattern) > 0 )
764 i = atoi(gsItemPattern);
771 for( i = 0; i < giNumItems; i ++ )
773 // Prefix match (with case-insensitive match)
774 for( j = 0; gsItemPattern[j]; j ++ )
776 if( gaItems[i].Desc[j] == gsItemPattern[j] )
778 if( tolower(gaItems[i].Desc[j]) == tolower(gsItemPattern[j]) )
782 // Check if the prefix matched
783 if( gsItemPattern[j] != '\0' )
787 if( gaItems[i].Desc[j] == '\0' ) {
792 // Only one match allowed
797 // TODO: Allow ambiguous matches?
798 // or just print a wanrning
799 printf("Warning - Ambiguous pattern, stopping\n");
804 // Was a match found?
807 fprintf(stderr, "No item matches the passed string\n");
814 else if( giUIMode != UI_MODE_BASIC )
820 // Very basic dispense interface
821 for( i = 0; i < giNumItems; i ++ ) {
823 if( i && strcmp(gaItems[i].Type, gaItems[i-1].Type) != 0 )
826 printf("%2i %s:%i\t%3i %s\n", i, gaItems[i].Type, gaItems[i].ID,
827 gaItems[i].Price, gaItems[i].Desc);
836 fgets(buffer, BUFSIZ, stdin);
840 if( buf[0] == 'q' ) break;
844 if( i != 0 || buf[0] == '0' )
846 if( i < 0 || i >= giNumItems ) {
847 printf("Bad item %i (should be between 0 and %i)\n", i, giNumItems);
856 // Check for a valid item ID
860 // Connect, Authenticate, dispense and close
861 sock = OpenConnection(gsDispenseServer, giDispensePort);
862 if( sock < 0 ) return RV_SOCKET_ERROR;
864 ret = Dispense_ItemInfo(sock, gaItems[i].Type, gaItems[i].ID);
867 ret = Authenticate(sock);
870 for( j = 0; j < giDispenseCount; j ++ ) {
871 ret = DispenseItem(sock, gaItems[i].Type, gaItems[i].ID);
875 printf("%i items dispensed\n", j);
877 Dispense_ShowUser(sock, gsUserName);
885 // -------------------
886 // --- NCurses GUI ---
887 // -------------------
889 * \brief Render the NCurses UI
891 int ShowNCursesUI(void)
896 const int displayMinWidth = 50;
897 char *titleString = "Dispense";
902 int ret = -2; // -2: Used for marking "no return yet"
904 char balance_str[5+1+2+1]; // If $9999.99 is too little, something's wrong
914 while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
917 if( currentItem >= maxItemIndex ) {
920 while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
929 while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
932 if( currentItem < 0 ) {
933 currentItem = maxItemIndex - 1;
935 while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
941 if( gsEffectiveUser )
942 username = gsEffectiveUser;
944 pwd = getpwuid( getuid() );
945 username = pwd->pw_name;
948 snprintf(balance_str, sizeof(balance_str), "$%i.%02i", giUserBalance/100, abs(giUserBalance)%100);
955 maxItemIndex = ShowItemAt(0, 0, 0, -1, 0);
956 // Get item count per screen
957 // - 6: randomly chosen (Need at least 3)
958 items_in_view = LINES - 6;
959 if( items_in_view > maxItemIndex )
960 items_in_view = maxItemIndex;
963 while( ShowItemAt(0, 0, 0, currentItem, 0) == -1 )
968 height = items_in_view + 3;
969 width = displayMinWidth;
972 xBase = COLS/2 - width/2;
973 yBase = LINES/2 - height/2;
978 PrintAlign(yBase, xBase, width, "/", '-', titleString, '-', "\\");
981 for( i = 0; i < items_in_view; i ++ )
985 move( yBase + 1 + i, xBase );
990 // Check for the '...' row
991 // - Oh god, magic numbers!
992 if( (i == 0 && itemBase > 0)
993 || (i == items_in_view - 1 && itemBase < maxItemIndex - items_in_view) )
995 printw(" ..."); pos += 8;
996 times = (width - pos) - 1;
997 while(times--) addch(' ');
1002 yBase + 1 + i, xBase + pos, // Position
1003 (width - pos) - 3, // Width
1004 itemBase + i, // Index
1005 !!(currentItem == itemBase + i) // Hilighted
1010 // Scrollbar (if needed)
1011 if( maxItemIndex > items_in_view ) {
1015 else if( i == items_in_view - 1 ) {
1019 int percentage = itemBase * 100 / (maxItemIndex-items_in_view);
1020 if( i-1 == percentage*(items_in_view-3)/100 ) {
1034 PrintAlign(yBase+height-2, xBase, width, "\\", '-', "", '-', "/");
1037 // - Username, balance, flags
1038 PrintAlign(yBase+height-1, xBase+1, width-2,
1039 username, ' ', balance_str, ' ', gsUserFlags);
1045 if( ch == '\x1B' ) {
1052 case 'B': _ItemDown(); break;
1053 case 'A': _ItemUp(); break;
1064 ret = ShowItemAt(0, 0, 0, currentItem, 0);
1067 case 'j': _ItemDown(); break;
1068 case 'k': _ItemUp(); break;
1070 case 0x1b: // Escape
1072 ret = -1; // -1: Return with no dispense
1076 // Check if the return value was changed
1077 if( ret != -2 ) break;
1080 // Scroll only if needed
1081 if( items_in_view < maxItemIndex )
1083 // - If the current item is above the second item shown, and we're not at the top
1084 if( currentItem < itemBase + 2 && itemBase > 0 ) {
1085 itemBase = currentItem - 2;
1086 if(itemBase < 0) itemBase = 0;
1088 // - If the current item is below the second item show, and we're not at the bottom
1089 if( currentItem > itemBase + items_in_view - 2 && itemBase + items_in_view < maxItemIndex ) {
1090 itemBase = currentItem - items_in_view + 2;
1091 if( itemBase > maxItemIndex - items_in_view )
1092 itemBase = maxItemIndex - items_in_view;
1104 * \brief Show item \a Index at (\a Col, \a Row)
1105 * \return Dispense index of item
1106 * \note Part of the NCurses UI
1108 int ShowItemAt(int Row, int Col, int Width, int Index, int bHilighted)
1117 // - This assumes that
1118 case UI_MODE_STANDARD:
1120 // Index = -1, request limit
1121 if( Index < 0 || Index >= giNumItems+2 )
1122 return giNumItems+2;
1127 name = "Coke Machine";
1128 Index = -1; // -1 indicates a label
1135 name = gaItems[Index].Desc;
1136 price = gaItems[Index].Price;
1137 status = gaItems[Index].Status;
1145 name = "Electronic Payment System";
1146 Index = -1; // -1 indicates a label
1151 name = gaItems[Index].Desc;
1152 price = gaItems[Index].Price;
1153 status = gaItems[Index].Status;
1159 // Width = 0, don't print
1162 // 4 preceding, 5 price
1163 int nameWidth = Width - 4 - snprintf(NULL, 0, " %4i", price);
1168 // Show hilight and status
1187 printw("%-*.*s", nameWidth, nameWidth, name);
1189 printw(" %4i", price);
1193 printw("-- %-*.*s ", Width-4, Width-4, name);
1197 // If the item isn't availiable for sale, return -1 (so it's skipped)
1198 if( status || (price > giUserBalance && gbDisallowSelectWithoutBalance) )
1205 * \brief Print a three-part string at the specified position (formatted)
1206 * \note NCurses UI Helper
1208 * Prints \a Left on the left of the area, \a Right on the righthand side
1209 * and \a Mid in the middle of the area. These are padded with \a Pad1
1210 * between \a Left and \a Mid, and \a Pad2 between \a Mid and \a Right.
1212 * ::printf style format codes are allowed in \a Left, \a Mid and \a Right,
1213 * and the arguments to these are read in that order.
1215 void PrintAlign(int Row, int Col, int Width, const char *Left, char Pad1,
1216 const char *Mid, char Pad2, const char *Right, ...)
1218 int lLen, mLen, rLen;
1223 // Get the length of the strings
1224 va_start(args, Right);
1225 lLen = vsnprintf(NULL, 0, Left, args);
1226 mLen = vsnprintf(NULL, 0, Mid, args);
1227 rLen = vsnprintf(NULL, 0, Right, args);
1231 if( lLen + mLen/2 > Width/2 || mLen/2 + rLen > Width/2 ) {
1232 return ; // TODO: What to do?
1238 va_start(args, Right);
1242 vsnprintf(tmp, lLen+1, Left, args);
1246 times = (Width - mLen)/2 - lLen;
1247 while(times--) addch(Pad1);
1251 vsnprintf(tmp, mLen+1, Mid, args);
1255 times = (Width - mLen)/2 - rLen;
1256 if( (Width - mLen) % 2 ) times ++;
1257 while(times--) addch(Pad2);
1261 vsnprintf(tmp, rLen+1, Right, args);
1266 // ---------------------
1267 // --- Coke Protocol ---
1268 // ---------------------
1269 int OpenConnection(const char *Host, int Port)
1271 struct hostent *host;
1272 struct sockaddr_in serverAddr;
1275 host = gethostbyname(Host);
1277 fprintf(stderr, "Unable to look up '%s'\n", Host);
1281 memset(&serverAddr, 0, sizeof(serverAddr));
1283 serverAddr.sin_family = AF_INET; // IPv4
1284 // NOTE: I have a suspicion that IPv6 will play sillybuggers with this :)
1285 serverAddr.sin_addr.s_addr = *((unsigned long *) host->h_addr_list[0]);
1286 serverAddr.sin_port = htons(Port);
1288 sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
1290 fprintf(stderr, "Failed to create socket\n");
1294 // printf("geteuid() = %i, getuid() = %i\n", geteuid(), getuid());
1296 if( geteuid() == 0 || getuid() == 0 )
1299 struct sockaddr_in localAddr;
1300 memset(&localAddr, 0, sizeof(localAddr));
1301 localAddr.sin_family = AF_INET; // IPv4
1303 // Loop through all the top ports until one is avaliable
1304 for( i = 512; i < 1024; i ++)
1306 localAddr.sin_port = htons(i); // IPv4
1307 // Attempt to bind to low port for autoauth
1308 if( bind(sock, (struct sockaddr*)&localAddr, sizeof(localAddr)) == 0 )
1312 printf("Warning: AUTOAUTH unavaliable\n");
1314 // printf("Bound to 0.0.0.0:%i\n", i);
1317 if( connect(sock, (struct sockaddr *) &serverAddr, sizeof(serverAddr)) < 0 ) {
1318 fprintf(stderr, "Failed to connect to server\n");
1322 // We're not authenticated if the connection has just opened
1323 gbIsAuthenticated = 0;
1328 int Authenticate_AutoAuth(int Socket, const char *Username)
1334 // Attempt automatic authentication
1335 sendf(Socket, "AUTOAUTH %s\n", Username);
1337 // Check if it worked
1338 buf = ReadLine(Socket);
1340 responseCode = atoi(buf);
1341 switch( responseCode )
1343 case 200: // Autoauth succeeded, return
1347 case 401: // Untrusted
1348 // fprintf(stderr, "Untrusted host, AUTOAUTH unavaliable\n");
1349 ret = RV_PERMISSIONS;
1351 case 404: // Bad Username
1352 fprintf(stderr, "Bad Username '%s'\n", Username);
1353 ret = RV_INVALID_USER;
1357 fprintf(stderr, "Unkown response code %i from server\n", responseCode);
1358 printf("%s\n", buf);
1359 ret = RV_UNKNOWN_ERROR;
1367 int Authenticate_AuthIdent(int Socket)
1373 // Attempt automatic authentication
1374 sendf(Socket, "AUTHIDENT\n");
1376 // Check if it worked
1377 buf = ReadLine(Socket);
1379 responseCode = atoi(buf);
1380 switch( responseCode )
1382 case 200: // Autoauth succeeded, return
1386 case 401: // Untrusted
1387 // fprintf(stderr, "Untrusted host, AUTHIDENT unavaliable\n");
1388 ret = RV_PERMISSIONS;
1392 fprintf(stderr, "Unkown response code %i from server\n", responseCode);
1393 printf("%s\n", buf);
1394 ret = RV_UNKNOWN_RESPONSE;
1403 int Authenticate_Password(int Socket, const char *Username)
1405 #if USE_PASSWORD_AUTH
1410 regmatch_t matches[4];
1412 sendf(Socket, "USER %s\n", Username);
1413 printf("Using username %s\n", Username);
1415 buf = ReadLine(Socket);
1418 // Expected format: 100 SALT <something> ...
1419 // OR : 100 User Set
1420 RunRegex(&gSaltRegex, buf, 4, matches, "Malformed server response");
1421 responseCode = atoi(buf);
1422 if( responseCode != 100 ) {
1423 fprintf(stderr, "Unknown repsonse code %i from server\n%s\n", responseCode, buf);
1425 return RV_UNKNOWN_ERROR; // ERROR
1429 if( memcmp( buf+matches[2].rm_so, "SALT", matches[2].rm_eo - matches[2].rm_so) == 0) {
1430 // Store it for later
1431 memcpy( salt, buf + matches[3].rm_so, matches[3].rm_eo - matches[3].rm_so );
1432 salt[ matches[3].rm_eo - matches[3].rm_so ] = 0;
1436 // Give three attempts
1437 for( i = 0; i < 3; i ++ )
1439 int ofs = strlen(Username)+strlen(salt);
1442 char *pass = getpass("Password: ");
1445 // Create hash string
1446 // <username><salt><hash>
1447 strcpy(tmp, Username);
1449 SHA1( (unsigned char*)pass, strlen(pass), h );
1450 memcpy(tmp+ofs, h, 20);
1453 SHA1( (unsigned char*)tmp, ofs+20, h );
1454 sprintf(tmpBuf, "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
1455 h[ 0], h[ 1], h[ 2], h[ 3], h[ 4], h[ 5], h[ 6], h[ 7], h[ 8], h[ 9],
1456 h[10], h[11], h[12], h[13], h[14], h[15], h[16], h[17], h[18], h[19]
1460 sendf(Socket, "PASS %s\n", tmpBuf);
1461 buf = ReadLine(Socket);
1463 responseCode = atoi(buf);
1465 if( responseCode == 200 ) break;
1466 // Bad username/password
1467 if( responseCode == 401 ) continue;
1469 fprintf(stderr, "Unknown repsonse code %i from server\n%s\n", responseCode, buf);
1475 return RV_INVALID_USER; // 2 = Bad Password
1479 return RV_INVALID_USER;
1484 * \brief Authenticate with the server
1485 * \return Boolean Failure
1487 int Authenticate(int Socket)
1491 if( gbIsAuthenticated ) return 0;
1494 pwd = getpwuid( getuid() );
1497 if( Authenticate_AutoAuth(Socket, pwd->pw_name) == 0 )
1499 else if( Authenticate_AuthIdent(Socket) == 0 )
1501 else if( Authenticate_Password(Socket, pwd->pw_name) == 0 )
1502 return RV_INVALID_USER;
1504 // Set effective user
1505 if( gsEffectiveUser ) {
1508 sendf(Socket, "SETEUSER %s\n", gsEffectiveUser);
1510 buf = ReadLine(Socket);
1511 responseCode = atoi(buf);
1513 switch(responseCode)
1516 printf("Running as '%s' by '%s'\n", gsEffectiveUser, pwd->pw_name);
1520 printf("Only coke members can use `dispense -u`\n");
1522 return RV_PERMISSIONS;
1525 printf("Invalid user selected\n");
1527 return RV_INVALID_USER;
1530 fprintf(stderr, "Unkown response code %i from server\n", responseCode);
1531 printf("%s\n", buf);
1533 return RV_UNKNOWN_ERROR;
1539 gbIsAuthenticated = 1;
1544 int GetUserBalance(int Socket)
1546 regmatch_t matches[6];
1553 if( gsEffectiveUser ) {
1554 gsUserName = gsEffectiveUser;
1557 pwd = getpwuid( getuid() );
1558 gsUserName = strdup(pwd->pw_name);
1562 sendf(Socket, "USER_INFO %s\n", gsUserName);
1563 buf = ReadLine(Socket);
1564 responseCode = atoi(buf);
1565 switch(responseCode)
1567 case 202: break; // Ok
1570 printf("Invalid user? (USER_INFO failed)\n");
1572 return RV_INVALID_USER;
1575 fprintf(stderr, "Unkown response code %i from server\n", responseCode);
1576 printf("%s\n", buf);
1578 return RV_UNKNOWN_ERROR;
1581 RunRegex(&gUserInfoRegex, buf, 6, matches, "Malformed server response");
1583 giUserBalance = atoi( buf + matches[4].rm_so );
1584 gsUserFlags = strdup( buf + matches[5].rm_so );
1592 * \brief Read an item info response from the server
1593 * \param Dest Destination for the read item (strings will be on the heap)
1595 int ReadItemInfo(int Socket, tItem *Dest)
1600 regmatch_t matches[8];
1604 buf = ReadLine(Socket);
1605 responseCode = atoi(buf);
1607 switch(responseCode)
1612 printf("Bad item name\n");
1617 fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n%s", responseCode, buf);
1619 return RV_UNKNOWN_ERROR;
1622 RunRegex(&gItemRegex, buf, 8, matches, "Malformed server response");
1624 buf[ matches[3].rm_eo ] = '\0';
1625 buf[ matches[5].rm_eo ] = '\0';
1626 buf[ matches[7].rm_eo ] = '\0';
1628 statusStr = &buf[ matches[5].rm_so ];
1630 Dest->ID = atoi( buf + matches[4].rm_so );
1632 if( strcmp(statusStr, "avail") == 0 )
1634 else if( strcmp(statusStr, "sold") == 0 )
1636 else if( strcmp(statusStr, "error") == 0 )
1639 fprintf(stderr, "Unknown response from dispense server (status '%s')\n",
1641 return RV_UNKNOWN_ERROR;
1643 Dest->Price = atoi( buf + matches[6].rm_so );
1645 // Hack a little to reduce heap fragmentation
1647 char tmpType[strlen(buf + matches[3].rm_so) + 1];
1648 char tmpDesc[strlen(buf + matches[7].rm_so) + 1];
1649 strcpy(tmpType, buf + matches[3].rm_so);
1650 strcpy(tmpDesc, buf + matches[7].rm_so);
1652 Dest->Type = strdup( tmpType );
1653 Dest->Desc = strdup( tmpDesc );
1660 * \brief Fill the item information structure
1661 * \return Boolean Failure
1663 void PopulateItemList(int Socket)
1670 regmatch_t matches[4];
1672 // Ask server for stock list
1673 send(Socket, "ENUM_ITEMS\n", 11, 0);
1674 buf = ReadLine(Socket);
1676 //printf("Output: %s\n", buf);
1678 responseCode = atoi(buf);
1679 if( responseCode != 201 ) {
1680 fprintf(stderr, "Unknown response from dispense server (Response Code %i)\n", responseCode);
1681 exit(RV_UNKNOWN_ERROR);
1684 // - Get item list -
1687 // 201 Items <count>
1689 RunRegex(&gArrayRegex, buf, 4, matches, "Malformed server response");
1691 arrayType = &buf[ matches[2].rm_so ]; buf[ matches[2].rm_eo ] = '\0';
1692 count = atoi( &buf[ matches[3].rm_so ] );
1695 if( strcmp(arrayType, "Items") != 0 ) {
1697 fprintf(stderr, "Unexpected array type, expected 'Items', got '%s'\n",
1699 exit(RV_UNKNOWN_ERROR);
1704 gaItems = malloc( giNumItems * sizeof(tItem) );
1706 // Fetch item information
1707 for( i = 0; i < giNumItems; i ++ )
1709 ReadItemInfo( Socket, &gaItems[i] );
1713 buf = ReadLine(Socket);
1714 responseCode = atoi(buf);
1716 if( responseCode != 200 ) {
1717 fprintf(stderr, "Unknown response from dispense server %i\n'%s'",
1728 * \brief Get information on an item
1729 * \return Boolean Failure
1731 int Dispense_ItemInfo(int Socket, const char *Type, int ID)
1737 sendf(Socket, "ITEM_INFO %s:%i\n", Type, ID);
1739 ret = ReadItemInfo(Socket, &item);
1742 printf("%8s:%-2i %2i.%02i %s\n",
1744 item.Price/100, item.Price%100,
1754 * \brief Dispense an item
1755 * \return Boolean Failure
1757 int DispenseItem(int Socket, const char *Type, int ID)
1759 int ret, responseCode;
1762 // Check for a dry run
1764 printf("Dry Run - No action\n");
1769 sendf(Socket, "DISPENSE %s:%i\n", Type, ID);
1770 buf = ReadLine(Socket);
1772 responseCode = atoi(buf);
1773 switch( responseCode )
1776 printf("Dispense OK\n");
1780 printf("Not authenticated\n");
1781 ret = RV_PERMISSIONS;
1784 printf("Insufficient balance\n");
1788 printf("Bad item name\n");
1792 printf("Item failed to dispense, is the slot empty?\n");
1793 ret = RV_SERVER_ERROR;
1796 printf("Dispense not possible (slot empty/permissions)\n");
1797 ret = RV_SERVER_ERROR;
1800 printf("Unknown response code %i ('%s')\n", responseCode, buf);
1801 ret = RV_UNKNOWN_ERROR;
1810 * \brief Alter a user's balance
1812 int Dispense_AlterBalance(int Socket, const char *Username, int Ammount, const char *Reason)
1815 int responseCode, rv = -1;
1817 // Check for a dry run
1819 printf("Dry Run - No action\n");
1824 if( Ammount == 0 ) {
1825 printf("An amount would be nice\n");
1826 return RV_ARGUMENTS;
1829 sendf(Socket, "ADD %s %i %s\n", Username, Ammount, Reason);
1830 buf = ReadLine(Socket);
1832 responseCode = atoi(buf);
1834 switch(responseCode)
1840 fprintf(stderr, "Insufficient balance\n");
1843 case 403: // Not in coke
1844 fprintf(stderr, "You are not in coke (sucker)\n");
1845 rv = RV_PERMISSIONS;
1847 case 404: // Unknown user
1848 fprintf(stderr, "Unknown user '%s'\n", Username);
1849 rv = RV_INVALID_USER;
1852 fprintf(stderr, "Unknown response code %i\n'%s'\n", responseCode, buf);
1853 rv = RV_UNKNOWN_RESPONSE;
1862 * \brief Set a user's balance
1863 * \note Only avaliable to dispense admins
1865 int Dispense_SetBalance(int Socket, const char *Username, int Balance, const char *Reason)
1870 // Check for a dry run
1872 printf("Dry Run - No action\n");
1876 sendf(Socket, "SET %s %i %s\n", Username, Balance, Reason);
1877 buf = ReadLine(Socket);
1879 responseCode = atoi(buf);
1882 switch(responseCode)
1884 case 200: return 0; // OK
1885 case 403: // Not in coke
1886 fprintf(stderr, "You are not an admin\n");
1887 return RV_PERMISSIONS;
1888 case 404: // Unknown user
1889 fprintf(stderr, "Unknown user '%s'\n", Username);
1890 return RV_INVALID_USER;
1892 fprintf(stderr, "Unknown response code %i\n", responseCode);
1893 return RV_UNKNOWN_RESPONSE;
1900 * \brief Give money to another user
1902 int Dispense_Give(int Socket, const char *Username, int Ammount, const char *Reason)
1908 printf("Sorry, you can only give, you can't take.\n");
1909 return RV_ARGUMENTS;
1912 // Fast return on zero
1913 if( Ammount == 0 ) {
1914 printf("Are you actually going to give any?\n");
1915 return RV_ARGUMENTS;
1918 // Check for a dry run
1920 printf("Dry Run - No action\n");
1924 sendf(Socket, "GIVE %s %i %s\n", Username, Ammount, Reason);
1926 buf = ReadLine(Socket);
1927 responseCode = atoi(buf);
1929 switch(responseCode)
1932 printf("Give succeeded\n");
1933 return RV_SUCCESS; // OK
1936 fprintf(stderr, "Insufficient balance\n");
1939 case 404: // Unknown user
1940 fprintf(stderr, "Unknown user '%s'\n", Username);
1941 return RV_INVALID_USER;
1944 fprintf(stderr, "Unknown response code %i\n", responseCode);
1945 return RV_UNKNOWN_RESPONSE;
1951 int Dispense_Refund(int Socket, const char *Username, const char *Item, int PriceOverride)
1954 int responseCode, ret = -1;
1957 if( RunRegex(&gUserItemIdentRegex, Item, 0, NULL, NULL) != 0 )
1959 fprintf(stderr, "Error: Invalid item ID passed (should be <type>:<num>)\n");
1960 return RV_ARGUMENTS;
1963 // Check username (quick)
1964 if( strchr(Username, ' ') || strchr(Username, '\n') )
1966 fprintf(stderr, "Error: Username is invalid (no spaces or newlines please)\n");
1967 return RV_ARGUMENTS;
1971 sendf(Socket, "REFUND %s %s %i\n", Username, Item, PriceOverride);
1973 buf = ReadLine(Socket);
1974 responseCode = atoi(buf);
1975 switch(responseCode)
1978 Dispense_ShowUser(Socket, Username); // Show destination account
1982 fprintf(stderr, "Refund access is only avaliable to coke members\n");
1983 ret = RV_PERMISSIONS;
1986 fprintf(stderr, "Unknown user '%s' passed\n", Username);
1987 ret = RV_INVALID_USER;
1990 fprintf(stderr, "Invalid item '%s' passed\n", Item);
1994 fprintf(stderr, "Unknown response from server %i\n%s\n", responseCode, buf);
2003 * \brief Donate money to the club
2005 int Dispense_Donate(int Socket, int Ammount, const char *Reason)
2011 printf("Sorry, you can only give, you can't take.\n");
2015 // Fast return on zero
2016 if( Ammount == 0 ) {
2017 printf("Are you actually going to give any?\n");
2021 // Check for a dry run
2023 printf("Dry Run - No action\n");
2027 sendf(Socket, "DONATE %i %s\n", Ammount, Reason);
2028 buf = ReadLine(Socket);
2030 responseCode = atoi(buf);
2033 switch(responseCode)
2035 case 200: return 0; // OK
2038 fprintf(stderr, "Insufficient balance\n");
2042 fprintf(stderr, "Unknown response code %i\n", responseCode);
2050 * \brief Enumerate users
2052 int Dispense_EnumUsers(int Socket)
2057 regmatch_t matches[4];
2059 if( giMinimumBalance != INT_MIN ) {
2060 if( giMaximumBalance != INT_MAX ) {
2061 sendf(Socket, "ENUM_USERS min_balance:%i max_balance:%i\n", giMinimumBalance, giMaximumBalance);
2064 sendf(Socket, "ENUM_USERS min_balance:%i\n", giMinimumBalance);
2068 if( giMaximumBalance != INT_MAX ) {
2069 sendf(Socket, "ENUM_USERS max_balance:%i\n", giMaximumBalance);
2072 sendf(Socket, "ENUM_USERS\n");
2075 buf = ReadLine(Socket);
2076 responseCode = atoi(buf);
2078 switch(responseCode)
2080 case 201: break; // Ok, length follows
2083 fprintf(stderr, "Unknown response code %i\n%s\n", responseCode, buf);
2088 // Get count (not actually used)
2089 RunRegex(&gArrayRegex, buf, 4, matches, "Malformed server response");
2090 nUsers = atoi( buf + matches[3].rm_so );
2091 printf("%i users returned\n", nUsers);
2096 // Read returned users
2098 buf = ReadLine(Socket);
2099 responseCode = atoi(buf);
2101 if( responseCode != 202 ) break;
2103 _PrintUserLine(buf);
2105 } while(responseCode == 202);
2107 // Check final response
2108 if( responseCode != 200 ) {
2109 fprintf(stderr, "Unknown response code %i\n%s\n", responseCode, buf);
2119 int Dispense_ShowUser(int Socket, const char *Username)
2122 int responseCode, ret;
2124 sendf(Socket, "USER_INFO %s\n", Username);
2125 buf = ReadLine(Socket);
2127 responseCode = atoi(buf);
2129 switch(responseCode)
2132 _PrintUserLine(buf);
2137 printf("Unknown user '%s'\n", Username);
2142 fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
2152 void _PrintUserLine(const char *Line)
2154 regmatch_t matches[6];
2157 RunRegex(&gUserInfoRegex, Line, 6, matches, "Malformed server response");
2162 int usernameLen = matches[3].rm_eo - matches[3].rm_so;
2163 char username[usernameLen + 1];
2164 int flagsLen = matches[5].rm_eo - matches[5].rm_so;
2165 char flags[flagsLen + 1];
2167 memcpy(username, Line + matches[3].rm_so, usernameLen);
2168 username[usernameLen] = '\0';
2169 memcpy(flags, Line + matches[5].rm_so, flagsLen);
2170 flags[flagsLen] = '\0';
2172 bal = atoi(Line + matches[4].rm_so);
2173 printf("%-15s: $%8.02f (%s)\n", username, ((float)bal)/100, flags);
2177 int Dispense_AddUser(int Socket, const char *Username)
2180 int responseCode, ret;
2182 // Check for a dry run
2184 printf("Dry Run - No action\n");
2188 sendf(Socket, "USER_ADD %s\n", Username);
2190 buf = ReadLine(Socket);
2191 responseCode = atoi(buf);
2193 switch(responseCode)
2196 printf("User '%s' added\n", Username);
2201 printf("Only wheel can add users\n");
2206 printf("User '%s' already exists\n", Username);
2211 fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
2221 int Dispense_SetUserType(int Socket, const char *Username, const char *TypeString, const char *Reason)
2224 int responseCode, ret;
2226 // Check for a dry run
2228 printf("Dry Run - No action\n");
2232 // TODO: Pre-validate the string
2234 sendf(Socket, "USER_FLAGS %s %s %s\n", Username, TypeString, Reason);
2236 buf = ReadLine(Socket);
2237 responseCode = atoi(buf);
2239 switch(responseCode)
2242 printf("User '%s' updated\n", Username);
2247 printf("Only dispense admins can modify users\n");
2248 ret = RV_PERMISSIONS;
2252 printf("User '%s' does not exist\n", Username);
2253 ret = RV_INVALID_USER;
2257 printf("Flag string is invalid\n");
2262 fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
2263 ret = RV_UNKNOWN_RESPONSE;
2272 int Dispense_SetItem(int Socket, const char *Type, int ID, int NewPrice, const char *NewName)
2275 int responseCode, ret;
2277 // Check for a dry run
2279 printf("Dry Run - No action\n");
2283 sendf(Socket, "UPDATE_ITEM %s:%i %i %s\n", Type, ID, NewPrice, NewName);
2285 buf = ReadLine(Socket);
2286 responseCode = atoi(buf);
2288 switch(responseCode)
2291 printf("Item %s:%i updated\n", Type, ID);
2296 printf("Only coke members can modify the slots\n");
2297 ret = RV_PERMISSIONS;
2301 printf("Invalid item passed\n");
2306 fprintf(stderr, "Unknown response code %i '%s'\n", responseCode, buf);
2319 char *ReadLine(int Socket)
2321 static char buf[BUFSIZ];
2322 static int bufPos = 0;
2323 static int bufValid = 0;
2325 char *newline = NULL;
2327 char *ret = malloc(10);
2329 #if DEBUG_TRACE_SERVER
2330 printf("ReadLine: ");
2342 len = recv(Socket, buf+bufPos, BUFSIZ-1-bufPos, 0);
2345 return strdup("599 Client Connection Error\n");
2348 buf[bufPos+len] = '\0';
2350 newline = strchr( buf+bufPos, '\n' );
2355 retLen += strlen(buf+bufPos);
2356 ret = realloc(ret, retLen + 1);
2357 strcat( ret, buf+bufPos );
2360 int newLen = newline - (buf+bufPos) + 1;
2361 bufValid = len - newLen;
2364 if( len + bufPos == BUFSIZ - 1 ) bufPos = 0;
2368 #if DEBUG_TRACE_SERVER
2369 printf("%i '%s'\n", retLen, ret);
2375 int sendf(int Socket, const char *Format, ...)
2380 va_start(args, Format);
2381 len = vsnprintf(NULL, 0, Format, args);
2386 va_start(args, Format);
2387 vsnprintf(buf, len+1, Format, args);
2390 #if DEBUG_TRACE_SERVER
2391 printf("sendf: %s", buf);
2394 return send(Socket, buf, len, 0);
2398 char *trim(char *string)
2402 while( isspace(*string) )
2405 for( i = strlen(string); i--; )
2407 if( isspace(string[i]) )
2416 int RunRegex(regex_t *regex, const char *string, int nMatches, regmatch_t *matches, const char *errorMessage)
2420 ret = regexec(regex, string, nMatches, matches, 0);
2421 if( ret && errorMessage ) {
2422 size_t len = regerror(ret, regex, NULL, 0);
2424 regerror(ret, regex, errorStr, len);
2425 printf("string = '%s'\n", string);
2426 fprintf(stderr, "%s\n%s", errorMessage, errorStr);
2433 void CompileRegex(regex_t *regex, const char *pattern, int flags)
2435 int ret = regcomp(regex, pattern, flags);
2437 size_t len = regerror(ret, regex, NULL, 0);
2439 regerror(ret, regex, errorStr, len);
2440 fprintf(stderr, "Regex compilation failed - %s\n", errorStr);