linux上的一个简单的多人聊天室.docx
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linux上的一个简单的多人聊天室
linux上的一个简单的多人聊天室002i.hisausedforcreatingalibrary003forserverclient
004Mar182010
005
006
007#ifndef_I_H
008
009#define_I_H
010
011#includemath.h
012#includestdio.h
013#includesyssocket.h
014#includearpainet.h
015#includenetinetin.h
016#includeunistd.h
017#includesystypes.h
018#includesysstat.h
019#includefcntl.h
020#includestdlib.h
021#includeerrno.h
022#includestring.h
023#includeinttypes.h
024#includetime.h
025#includesysioctl.h
026#includenetif.h
027#includesignal.h
028#includencurses.h
029#includemath.h
030
031#defineSEVR_IP127.0.0.1
032#defineSEVR_PORT8081
033#defineCNTNT_LEN150
034#defineMSG_LENsizeof（structmsg035#defineADDR_LENsizeof（structsockaddr036#defineUSR_LENsizeof（structuser
037#definePRT_LEN8
038#defineHSTR_LENsizeof（structchat_history039
040declareGlobalvariables
041intmainfd;usedaschathistroyfilehandle
042intsockfd;usedassocketlocalhandle
043intcount;
044structsockaddr_inserver;
045
046msgisusedforcommunicatingmessage
047structmsg
048{
049intflag;flagmeaning1,ordinary;2,logmsg;3,regmsg,other,file050intid_from;
051intid_to;
052charcontent[CNTNT_LEN];
053charappend[10];
054};
055
056userisusedinformationlist
057structuser
058{
059intid;
060charname[10];
061charpassword[10];
062charp_chatlog;
063structsockaddruser_addr;
064};
065chat_historyusedforreadingchathistory
066structchat_history
067{
068charcontent[CNTNT_LEN];
069chartime[25];
070intto;
071intfrom;
072intcount;
073};
074
075i_functionsbelowisfuntionsneededbybothclientandsever076externinti_saveto_chat（structmsgpmsg;
077
078inti_clean_stdin（
079{
080while（'n'==getchar（
081{
082continue;
083}
084
085return（0;
086}
087
088inti_print（charpmsg,intsize
089{
090inti=1;
091
092for（i;i=size;i++
093{
094if（pmsg!
='n'095{
096printf（%c,pmsg;097pmsg++;
098}
099else
100{
101return（0;
102}
103}
104
105return（0;
106}
107inti_input（charp_input
108{
109charc='0';
110inti;
111
112for（i=0;iCNTNT_LEN;i++
113{
114p_input[i]=getchar（;
115if（p_input[i]=='n'
116{
117return（0;
118}
119}
120
121printf（youhaveinputlongenough!
n;
122return（0;
123}
124inti_socket（intdomain,inttype,intprotocol125{
126intfd;
127
128if（（fd=socket（domain,type,protocol==-1129{
130perror（creatsocketerror;
131exit（1;
132}
133
134return（fd;
135}
136
137inti_bind（intfd,conststructsockaddraddr,intnamelen138{
139if（-1==bind（fd,addr,namelen
140{
141perror（i_binderror;
142exit（1;
143}
144
145return（0;
146}
147
148inti_recvfrom（intfd,voidbuf,size_tlen,intflags,149structsockaddraddr,intsize
150{
151if（-1==recvfrom（fd,buf,len,flags,addr,size152{
153perror（i_recvfromerror;
154exit（1;
155}
156
157return（0;
158}
159
160inti_sendto（intfd,voidbuf,size_tlen,intflags,161structsockaddraddr,intsize
162{
163if（-1==sendto（fd,buf,len,flags,addr,size164{
165perror（i_sendtoerror;
166exit（1;
167}
168
169return（0;
170}
171
172inti_open（constcharpathname,intflags
173{
174intfd;
175if（（fd=open（pathname,flags==-1176{
177perror（open_failed;178exit（1;
179}
180
181return（fd;
182}
183inti_read（intfd,voidmsg,intlen184{
185if（-1==read（fd,msg,len186{
187perror（i_readerror;188exit（1;
189}
190return（0;
191}
192inti_write（intfd,voidmsg,intlen193{
194if（-1==write（fd,msg,len195{
196perror（i_writeerror;197exit（0;
198}
199return（0;
200}
201
202initasocket,fileandserveraddr
203inti_init（
204{
205mainfd=i_open（.chat_log,O_RDWRO_CREAT;206sockfd=i_socket（AF_INET,SOCK_DGRAM,0;207
208initializeserveraddress
209bzero（&server,sizeof（server;
210server.sin_family=AF_INET;
211inet_pton（AF_INET,127.0.0.1,&server.sin_addr;212server.sin_port=htons（SEVR_PORT;
213
214perror（init;
215
216return（0;
217}
218
219chari_get_time（
220{
221time_ttime_now;
222time（&time_now;
223
224return（ctime（&time_now;225}
226inti_lseek（intfd,off_tsize,intposition227{
228if（-1==lseek（fd,size,position229{
230perror（seekerror;
231exit（1;
232}
233return（0;
234}
235inti_saveto_chat（structmsgpmsg236{
237structchat_historyhstr;
238
239
240bzero（&hstr,HSTR_LEN;241count=count+1;
242hstr.count=count;
243hstr.from=pmsg-id_from;
244hstr.to=pmsg-id_to;
245strncpy（hstr.content,pmsg-content,CNTNT_LEN;246strncpy（hstr.time,i_get_time（,25;
247
248i_lseek（mainfd,0,SEEK_END;
249
250i_write（mainfd,&hstr,HSTR_LEN;
251
252return（0;
253}
254
255inti_print_history（intlen,inti
256{
257structchat_historychat_reader;
258intj;
259intposition;
260
261bzero（&chat_reader,HSTR_LEN;
262if（i!
=0
263{
264position=leniHSTR_LEN;
265i_lseek（mainfd,position,SEEK_END;266}
267else
268{
269position=leniHSTR_LEN;
270
271i_lseek（mainfd,HSTR_LEN,SEEK_SET;272}
273
274for（j=1;j=len;j++
275{
276
277i_read（mainfd,&chat_reader,HSTR_LEN;278printf（n#item%did%dtoid%dn,j,
279chat_reader.from,chat_reader.to;280i_print（chat_reader.content,CNTNT_LEN;281printf（nTime%sn,chat_reader.time;282}
283
284return（0;
285}
286
287#endif
server.c~6KB下载（364
viewsourceprint001
002titleserver.c
003contentserverpart
004starttimeMar.25.2011
005endtimeApr.82011
006
007
008#includei.h
009
010intuser_list_fd;
011
012startinitialization
013intinit（
014{
015i_init（;
016
017user_list_fd=i_open（.user_list,O_RDWRO_CREAT;018
019structuserusr;
020inittheuserlistfile'sfistuserto0
021memset（（structuser&usr,'0',sizeof（structuser;022i_lseek（user_list_fd,0,SEEK_SET;
023i_write（user_list_fd,（char&usr,USR_LEN;
024
025bindthestructsockaddr_inservertothesockfd026i_bind（sockfd,（structsockaddr&server,ADDR_LEN;027
028structchat_historyapple;
029
030bzero（&apple,HSTR_LEN;
031i_lseek（mainfd,0,SEEK_SET;
032i_write（mainfd,&apple,HSTR_LEN;
033i_lseek（mainfd,-HSTR_LEN,SEEK_END;
034i_read（mainfd,&apple,HSTR_LEN;
035count=apple.count;
036
037return（0;
038}
039endinitialization
040
041startmessagecontrol
042intsend_msg（structmsgmsg_recv,structsockaddraddr
043{
044inti;
045structuserusr;
046
047acommonmessagecome
048printf（aordinarmessagecome!
n;
049
050i=msg_recv-id_to;
051i_lseek（user_list_fd,iUSR_LEN,SEEK_SET;
052i_read（user_list_fd,&usr,USR_LEN;
053strncpy（msg_recv-append,usr.name,10;
054
055i_sendto（sockfd,msg_recv,MSG_LEN,0,
056&（usr.user_addr,ADDR_LEN;
057
058printf（id%dsendamessagetoid%dsucess!
n,msg_recv-id_from,msg_recv-id_to;059
060return（0;
061}
062intcheck_login（structmsgmsg_recv,structsockaddraddr
063{
064inti=msg_recv-id_from;;
065structuserusr;
066
067aloginrequet
068printf（aloginrequestcome!
n;
069
070gettheid'sinformation
071i_lseek（user_list_fd,iUSR_LEN,SEEK_SET;
072i_read（user_list_fd,&usr,USR_LEN;
073
074intn;
075n=strcmp（usr.password,msg_recv-content;
076如果验证成功,则发送成功信息
077if（n==0
078{
079saveusernewaddress
080i_lseek（user_list_fd,-USR_LEN,SEEK_CUR;
081usr.user_addr=addr;
082i_write（user_list_fd,&usr,USR_LEN;
083telluserpass
084i_sendto（sockfd,（structmsgmsg_recv,sizeof（structmsg,0,085&（usr.user_addr,ADDR_LEN;
086
088else
089{
090出错的话的respond
091if（0!
=n
092{
093printf（id%dloginerror.n,i;
094bzero（msg_recv-content,CNTNT_LEN;
095msg_recv-flag=-1;
096i_sendto（sockfd,（structmsgmsg_recv,sizeof（structmsg,0,097&（usr.user_addr,ADDR_LEN;
098
099}
100return（1;
101}
102printf（Id%dloginsucess!
n,i;
103
104return（0;
105}
106intreg_user（structmsgmsg_recv,structsockaddraddr
107{
108structuserusr;
110printf（aregitrequetcomen;
111
112findthelastuserandhavathepleasetoaddanewuser113intn;
114i_lseek（user_list_fd,-USR_LEN,SEEK_END;
115i_read（user_list_fd,&usr,USR_LEN;
116把新用户的信息赋值到usr然后填入到userlistfile中117constcharname;
118constcharpassword;
119
120name=&（msg_recv-content[0];
121password=&（msg_recv-content[10];
122strcpy（（usr.name,name;
123strcpy（usr.password,password;
124memcpy（&（usr.user_addr,addr,ADDR_LEN;
125
126usr.id=（usr.id+1;
127i_lseek（user_list_fd,0,SEEK_END;
128i_write（user_list_fd,&usr,USR_LEN;
129
130msg_recv-id_from=usr.id;
131registtotheuserlistthentelltheuserregsuccess
132i_sendto（sockfd,（structmsgmsg_recv,sizeof（structmsg,0,133addr,ADDR_LEN;
134
135printf（Id%dregistsucess!
n,usr.id;
136
137return（0;
138
139}
140intmsg_cntl（
141{
142structmsgmsg_recv;
143structsockaddraddr_recv;
144
145printf（beginlisteninput...n;
146intsize=ADDR_LEN;
147
148for（;;
149{
150bzero（&msg_recv,MSG_LEN;
151i_recvfrom（sockfd,&msg_recv,sizeof（structmsg,0,152&addr_recv,&size;
153printf（messagereceived...n;
154
155i_saveto_chat（&msg_recv;
156
157switch（msg_recv.flag
158{
159case1
160send_msg（&msg_recv,（structsockaddr&addr_recv;sendordinarychat161break;
162case2
163check_login（&msg_recv,（structsockaddr&addr_recv;
164break;
165case3
166reg_user（&msg_recv,（structsockaddr&addr_recv;
167break;
168default
169break;
170}
171}
172return（0;
173}
174endmessagecontrol
175startexit_sys（
176intexit_sys（
177{
178close（sockfd;
179close（mainfd;
180close（user_list_fd;
181printf（exitsystem;
182kill（0,SIGABRT;
183
184exit（0;
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