-
Notifications
You must be signed in to change notification settings - Fork 1
Expand file tree
/
Copy pathuserSession.cpp
More file actions
179 lines (163 loc) · 6.75 KB
/
userSession.cpp
File metadata and controls
179 lines (163 loc) · 6.75 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
#include <mutex>
#include <queue>
#include <algorithm>
#include <string>
#include <regex>
#include <thread>
#include <sys/inotify.h>
#include "userSession.hpp"
UserSession::UserSession(udpconnection_ptr udpconnection, user_ptr user){
this->user = std::move(user);
this->udpConnection = std::move(udpconnection);
}
UserSession::~UserSession(){
std::cout << "Deleting UserSession" << std::endl;
}
void UserSession::runSession(){
int status = 0;
bool running = true;
Datagram* message = udpConnection->getRecvbuffer();
zerosDatagram(message);
while(running){
status = udpConnection->recDatagram();
if (status >= 0){
user->actionMutex.lock();
switch (message->type) {
case UPLOAD:
{
Datagram dg;
s_fileinfo *sinfo = (s_fileinfo*) message->data;
Fileinfo info;
info.mod = ntohl(sinfo->mod);
info.size = ntohl(sinfo->size);
info.name = sinfo->name;
auto it = user->files.find(info.name);
if (it != user->files.end()){
if (info.mod == it->second.mod && info.size == it->second.size){
dg.type = DECLINE;
dg.seqNumber = 0;
dg.size = 0;
udpConnection->sendDatagram(dg);
break;
}
}
dg.type = ACCEPT;
dg.seqNumber = 0;
dg.size = 0;
udpConnection->sendDatagram(dg);
std::string filepath = user->userFolder + info.name;
FILE* file = fopen(filepath.c_str(), "wb");
udpConnection->receiveFile(file);
fclose(file);
// send file's new timestap
info = getFileinfo(filepath);
sinfo = (s_fileinfo*) dg.data;
sinfo->mod = htonl(info.mod);
sinfo->size = htonl(info.size);
udpConnection->sendDatagram(dg);
// add file to filelist
user->files[info.name] = info;
user->bumpFolderVersion();
break;
}
case DOWNLOAD:
{
Datagram dg;
s_fileinfo *sinfo = (s_fileinfo*) message->data;
Fileinfo info;
info.name = sinfo->name;
auto it = user->files.find(info.name);
if (it == user->files.end()) {
dg.type = DECLINE;
dg.seqNumber = 0;
dg.size = 0;
udpConnection->sendDatagram(dg);
break;
}
info = it->second;
std::string filepath = user->userFolder + info.name;
FILE* file = fopen(filepath.c_str(), "rb");
if (!file) {
dg.type = DECLINE;
dg.seqNumber = 0;
dg.size = 0;
udpConnection->sendDatagram(dg);
break;
}
dg.type = ACCEPT;
sinfo = (s_fileinfo*) dg.data;
sinfo->size = htonl(info.size);
sinfo->mod = htonl(info.mod);
udpConnection->sendDatagram(dg);
udpConnection->sendFile(file);
fclose(file);
} break;
case DELETE: {
s_fileinfo *sinfo = (s_fileinfo*) message->data;
Fileinfo info;
info.name = sinfo->name;
std::string filepath = user->userFolder + info.name;
auto it = user->files.find(info.name);
if (it != user->files.end()) {
user->files.erase(it);
}
remove(filepath.c_str());
Datagram dg;
dg.type = ACCEPT;
dg.seqNumber = 0;
dg.size = 0;
udpConnection->sendDatagram(dg);
user->bumpFolderVersion();
} break;
case SERVERDIR: {
int numFiles = user->files.size();
if (numFiles <= 0) {
Datagram numFilesDatagram;
numFilesDatagram.type = SERVERDIR;
numFilesDatagram.seqNumber = 0;
udpConnection->sendDatagram(numFilesDatagram);
break;
}
s_fileinfo *info = (s_fileinfo*)calloc(numFiles, sizeof(s_fileinfo));
memset(info, 0, numFiles * sizeof(s_fileinfo));
int i = 0;
for (auto const fileIt : user->files) {
Fileinfo fileinfo = fileIt.second;
strncpy(info[i].name, fileinfo.name.c_str(), 255);
info[i].mod = htonl(fileinfo.mod);
info[i].size = htonl(fileinfo.size);
i += 1;
}
Datagram numFilesDatagram;
numFilesDatagram.type = SERVERDIR;
numFilesDatagram.seqNumber = i;
if (i != numFiles) {
std::cerr << "### ERROR numFiles does not match ###" << '\n';
}
udpConnection->sendDatagram(numFilesDatagram);
udpConnection->sendMessage((char*) info, sizeof(s_fileinfo) * numFiles);
free(info);
} break;
case FOLDER_VERSION:
message->seqNumber = user->getFolderVersion();
udpConnection->sendDatagram(*message);
break;
case EXIT:
std::cout << "Exiting Server!" << std::endl;
udpConnection->sendDatagram(*message);
user->numSessions--;
running = false;
break;
default:
std::cout << "Invalid Request." << std::endl;
break;
}
user->actionMutex.unlock();
} else if (status == TIMEOUT){
std::cout << "Response timed out." << std::endl;
} else {
std::cout << "Error on receiving datagram, exiting process." << std::endl;
running = false;
}
}
}