--- /dev/null
+/*
+ * 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);
+ }
+}
+
git.ucc.asn.au / tpg / opendispense2.git / blobdiff
UCC git Repository :: git.ucc.asn.au