update ftpserver

APP_Framework/Applications/app_test/test_ftpclient_final/ftpserver.c

@@ -22,6 +22,7 @@
 #include <netinet/in.h>
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 
@@ -45,40 +46,29 @@ struct LoginStatus {
 
 struct User users[MAX_USERS];
 struct LoginStatus login_list[MAX_CONNECTION];
-
+void GetFullAddress(char *client_id, char *client_ip, int client_port) {
+    memset(client_id, 0, sizeof(client_id));
+    sprintf(client_id, "%s:%d", client_ip, client_port);
+}
 int CheckPassword(int it){
     for(int i=0;i<MAX_USERS;i++){
-        if(strcmp(login_list[it]->users[i]->username) == 0 && strcmp(login_list[it]->users[i]->password) == 0)return 1;
+        if(strcmp(login_list[it].username,users[i].username) == 0 && strcmp(login_list[it].password,users[i].password) == 0)return 1;
     }
     return 0;
 }
 
-char *GetAddress(struct sockaddr_in addr) {
-    char *address_string = (char *)malloc(INET_ADDRSTRLEN + 10);
-
-    if (address_string == NULL) {
-        return NULL;
-    }
-
-    char ipStr[INET_ADDRSTRLEN];
-    inet_ntop(AF_INET, &(addr.sin_addr), ipStr, sizeof(ipStr));
-
-    sprintf(address_string, "%s:%d", ipStr, ntohs(addr.sin_port));
-    return address_string;
-}
-
 char *GetRespond(char *buf,int it) {
-    char * cmd-malloc(100);
+    char * cmd=malloc(100);
     char * data=malloc(100);
     char * respond=malloc(100);
     sscanf(buf,"%s %s",cmd,data);
     if(strcmp(cmd,"USER")==0){
-        login_list[it]->login_status=LOGGED_IN;
-        strcpy(login_list[it]->username,data);
-        sprintf(respond,"331 %d login ok, send your password\n",data);
+        login_list[it].login_status=LOGED_IN;
+        strcpy(login_list[it].username,data);
+        sprintf(respond,"331 %s login ok, send your password\n",data);
     }
     else if(strcmp(cmd,"PASS")==0){
-        login_list[it]->login_status=LOGGED_IN;
+        login_list[it].login_status=LOGED_IN;
         if(CheckPassword(it)){
             sprintf(respond,"230 access granted, restrictions apply\n");
         }
@@ -105,9 +95,12 @@ char *GetRespond(char *buf,int it) {
 }
 
 int Init() {
-    memset(login_status,0,sizeof(login_status));
+    memset(login_list,0,sizeof(login_list));
     memset(users,0,sizeof(users));
-
+    for (int i = 0;i < MAX_CONNECTION;i++) {
+        login_list[i].addr = (char*)malloc(50);
+        strcpy(login_list[i].addr, "");
+    }
     int fd = socket(AF_INET, SOCK_STREAM, 0);
     if (fd < 0) {
         printf("Failed to create socket\n");
@@ -133,42 +126,46 @@ int Init() {
         socklen_t len = sizeof(client_addr);
         int cmd_fd = accept(fd, (struct sockaddr *)&client_addr, &len);
 
-        char *client_ip;
+        char client_ip[INET_ADDRSTRLEN];
         int client_port;
         inet_ntop(AF_INET, &(client_addr.sin_addr), client_ip, sizeof(client_ip));
         client_port = ntohs(client_addr.sin_port);
         printf("Client %s:%d connected.\n", client_ip, client_port);
 
-        int it=-1;
-        for(int i=0;i<MAX_CONNECTION;i++){
-            if(strcmp(GetAddress(client_addr),login_list[it]->addr)){
+        int it = -1;
+        char client_id[50];
+        for (int i = 0;i < MAX_CONNECTION;i++) {
+            GetFullAddress(client_id, client_ip, client_port);
+            printf("%s\n", client_id);
+            if (strcmp(client_id, login_list[it].addr) == 0) {
                 it=i;
                 break;
             }
         }
         if (it==-1){
             for(int i=0;i<MAX_CONNECTION;i++){
-                if(login_list[i]->login_status==0){
-                    it=i;
+                if(login_list[i].login_status==0){
+                    it = i;
+                    strcpy(login_list[i].addr, client_id);
                     break;
                 }
             }
             if(it==-1){
-                const char limit_exceeded = "530 connection limit exceeded.";
+                const char limit_exceeded[] = "530 connection limit exceeded.";
                 write(cmd_fd, limit_exceeded, strlen(limit_exceeded));
                 continue;
             }
         }
-        if(login_list[it]->login_status == UNLOGED_IN){
-            const char welcome = "220 welcome.";
+        if(login_list[it].login_status == UNLOGED_IN){
+            const char welcome[] = "220 welcome.";
             write(cmd_fd, welcome, strlen(welcome));
         }
 
         char buf[1024];
-        int len;
-        len = read(cmd_fd, buf, sizeof(buf));
+        int size;
+        size = read(cmd_fd, buf, sizeof(buf));
 
-        if (len < 0) {
+        if (size < 0) {
             printf("Failed to read or client closed\n");
         }
 
@@ -180,9 +177,9 @@ int Init() {
 void InsertUser(char * username,char * password)
 {
     for(int i=0;i<MAX_USERS;i++){
-        if(strlen(users[i]->username)==0){
-            strcpy(users[i]->username,username);
-            strcpy(users[i]->password,password);
+        if(strlen(users[i].username)==0){
+            strcpy(users[i].username,username);
+            strcpy(users[i].password,password);
             return;
         }
     }