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嵌入式 一个基于linux的聊天软件（并发服务器，sqlite3数据库，有注释）

来源：互联网 发布：在台湾可以用淘宝吗 编辑：程序博客网 时间：2024/05/29 04:35

 

SC.h:

[csharp] viewplaincopyprint?
  1. #include
  2. #include
  3. #include
  4. #include
  5. #include
  6. #include
  7. #include
  8. #include
  9. #include
  10. #include
  11. #include
  12. #include
  13. #defineADMIN_SHOW 1
  14. #define ADMIN_BAN 2
  15. #defineADMIN_LIFT 3
  16. #define ADMIN_KICK 4
  17. #defineADMIN_EXIT 5
  18. typedef structmyinfo
  19. {
  20. int flt;
  21. charname[20];
  22. charsec[20];
  23. }MYINFO;
  24. typedef structmessage
  25. {
  26. int flt;
  27. charmyname[20];
  28. charname[20];
  29. charmessage[200];
  30. }MES;
  31. typedef structrev
  32. {
  33. charmyname[20];
  34. charmessage[200];
  35. int fd;
  36. }REV;
  37. typedef structonline
  38. {
  39. int num;
  40. charname[8][20];
  41. }ONLINE;
  42. externvoids_chat(int,sqlite3 *,MES *,REV*);
  43. externvoids_view(int,sqlite3 *,MES*);
  44. externvoids_file(int,sqlite3 *,MES *,REV*);
  45. externvoids_getfile(int);
#include #include #include #include #include #include #include #include #include #include #include #include #define ADMIN_SHOW 1#define ADMIN_BAN 2#define ADMIN_LIFT 3#define ADMIN_KICK 4#define ADMIN_EXIT 5typedef struct myinfo{    int flt;    char name[20];    char sec[20];}MYINFO;typedef struct message{    int flt;    char myname[20];    char name[20];    char message[200];}MES;typedef struct rev{    char myname[20];    char message[200];    int fd;}REV;typedef struct online{    int num;    char name[8][20];}ONLINE;extern void s_chat(int,sqlite3 *,MES *,REV *);extern void s_view(int,sqlite3 *,MES *);extern void s_file(int,sqlite3 *,MES *,REV *);extern void s_getfile(int);


packet.c:

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  1. #include "../../include/SC.h"
  2. intSocket(intfamily,inttype,intprotocol)
  3. {
  4. intsockfd;
  5. if((sockfd =socket(family,type,protocol)) < 0)
  6. {
  7. perror("socketerror!\n");
  8. exit(-1);
  9. }
  10. returnsockfd;
  11. }
  12. int Bind(intsockfd,conststruct sockaddr *myaddr,socklen_t addrlen)
  13. {
  14. int ret;
  15. if((ret =bind(sockfd,myaddr,addrlen)) < 0)
  16. {
  17. perror("bind error!\n");
  18. exit(-1);
  19. }
  20. returnret;
  21. }
  22. intAccept(intsockfd,structsockaddr*cliaddr,socklen_t *addrlen)
  23. {
  24. int ret;
  25. return(ret =accept(sockfd,cliaddr,addrlen));
  26. }
  27. intConnect(intsockfd,conststruct sockaddr*servaddr,socklen_t addrlen)
  28. {
  29. int ret;
  30. if((ret =connect(sockfd,servaddr,addrlen)) == -1)
  31. {
  32. perror("connecterror!\n");
  33. exit(-1);
  34. }
  35. returnret;
  36. }
  37. pid_t Fork(void)
  38. {
  39. pid_t pid;
  40. if((pid = fork()) <0)
  41. {
  42. perror("fork error!\n");
  43. exit(-1);
  44. }
  45. returnpid;
  46. }
  47. int Shmget(key_tkey,intsize,intshmflg)
  48. {
  49. int ret;
  50. if((ret =shmget(key,size,shmflg)) < 0)
  51. {
  52. perror("shmgeterror!\n");
  53. exit(-1);
  54. }
  55. returnret;
  56. }
  57. void*Shmat(intshmid,constvoid*shmaddr,intshmflg)
  58. {
  59. void *shmptr =NULL;
  60. if((shmptr =shmat(shmid,shmaddr,shmflg)) == (void*)(-1))
  61. {
  62. perror("shmat error!\n");
  63. exit(-1);
  64. }
  65. return(void*)shmptr;
  66. }
  67. int Open(constchar*pathname,intflags,mode_tmode)
  68. {
  69. int fd;
  70. if((fd =open(pathname,flags,mode)) == -1)
  71. {
  72. perror("openerror!\n");
  73. }
  74. returnfd;
  75. }
  76. intClose(intfildes)
  77. {
  78. int ret;
  79. if((ret = close(fildes)) ==-1)
  80. {
  81. perror("closeerror!\n");
  82. exit(-1);
  83. }
  84. returnret;
  85. }
  86. ssize_t Write(intfd,constvoid*buf,size_t count)
  87. {
  88. ssize_t ret;
  89. if((ret =write(fd,buf,count)) == -1)
  90. {
  91. perror("write error!\n");
  92. exit(-1);
  93. }
  94. returnret;
  95. }
  96. ssize_t Read(intfd,void*buf,size_tcount)
  97. {
  98. ssize_t ret;
  99. if((ret =read(fd,buf,count)) == -1)
  100. {
  101. perror("readerror!\n");
  102. exit(-1);
  103. }
  104. returnret;
  105. }
  106. void *Malloc(size_tsize)
  107. {
  108. void*ret;
  109. if((ret = malloc(size)) ==NULL)
  110. {
  111. perror("mallocerror!\n");
  112. exit(-1);
  113. }
  114. returnret;
  115. }
  116. voidFree(void*memblock)
  117. {
  118. free(memblock);
  119. }
#include "../../include/SC.h"int Socket(int family,int type,int protocol){    int sockfd;    if((sockfd = socket(family,type,protocol)) < 0)    {        perror("socket error!\n");        exit(-1);    }    return sockfd;}int Bind(int sockfd,const struct sockaddr * myaddr,socklen_t addrlen){    int ret;    if((ret = bind(sockfd,myaddr,addrlen)) < 0)    {        perror("bind error!\n");        exit(-1);    }    return ret;}int Accept(int sockfd,struct sockaddr *cliaddr,socklen_t *addrlen){    int ret;    return (ret = accept(sockfd,cliaddr,addrlen));}int Connect(int sockfd,const struct sockaddr *servaddr,socklen_t addrlen){    int ret;    if((ret = connect(sockfd,servaddr,addrlen)) == -1)    {        perror("connect error!\n");        exit(-1);    }    return ret;}pid_t Fork(void){    pid_t pid;    if((pid = fork()) < 0)    {        perror("fork error!\n");        exit(-1);    }    return pid;}int Shmget(key_t key,int size,int shmflg){    int ret;    if((ret = shmget(key,size,shmflg)) < 0)    {        perror("shmget error!\n");        exit(-1);    }    return ret;}void *Shmat(int shmid,const void *shmaddr,int shmflg){    void *shmptr = NULL;    if((shmptr = shmat(shmid,shmaddr,shmflg)) == (void *)(-1))    {        perror("shmat error!\n");        exit(-1);    }    return (void *)shmptr;}int Open(const char *pathname,int flags,mode_t mode){    int fd;    if((fd = open(pathname,flags,mode)) == -1)    {        perror("open error!\n");    }    return fd;}int Close(int fildes){    int ret;    if((ret = close(fildes)) == -1)    {        perror("close error!\n");        exit(-1);    }    return ret;}ssize_t Write(int fd,const void *buf,size_t count){    ssize_t ret;    if((ret = write(fd,buf,count)) == -1)    {        perror("write error!\n");        exit(-1);    }    return ret;}ssize_t Read(int fd,void *buf,size_t count){    ssize_t ret;    if((ret = read(fd,buf,count)) == -1)    {        perror("read error!\n");        exit(-1);    }    return ret;}void *Malloc(size_t size){    void *ret;    if((ret = malloc(size)) == NULL)    {        perror("malloc error!\n");        exit(-1);    }    return ret;}void Free(void *memblock){    free(memblock);}


server.c:

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  2. #include "../../include/SC.h"
  4. intmain()
  5. {
  6. intsockfd,bindret,i,result,nRow,nCoulum;
  7. sqlite3 *db;
  8. char *errmsg =NULL;
  9. char**dbresult;
  10. char**dbresults;
  11. char**dbresultr;
  12. REV *shmptr = NULL; //shmaddr
  13. intshmid;
  14. char buf[64];//for transferfile
  15. structsockaddr_inmy_addr;
  16. int flt =0;
  17. memset((&my_addr),0,sizeof(my_addr));//setzero
  18. memset(buf,0,64);
  19. result = sqlite3_open("../myserever.db",&db);
  20. if(result !=SQLITE_OK)
  21. {
  22. printf("opendata base failure!\n");
  23. exit(-1);
  24. }
  25. sqlite3_exec(db,"drop tableonline",NULL,NULL,&errmsg);
  26. sqlite3_exec(db,"create table online(name text primary key unique,fdinteger,fltinteger)",NULL,NULL,&errmsg);//create table foronline
  27. sockfd =Socket(AF_INET,SOCK_STREAM,0);
  28. fcntl(sockfd,F_SETFL,O_NONBLOCK); //set socket NONBLOCK
  29. if(sockfd <0)
  30. {
  31. perror("sockfderror!\n");
  32. exit(-1);
  33. }
  34. my_addr.sin_family = AF_INET;
  35. my_addr.sin_port = htons(6666);
  36. my_addr.sin_addr.s_addr = INADDR_ANY; //auto bind
  37. Bind(sockfd,(structsockaddr*)(&my_addr),sizeof(my_addr));
  38. listen(sockfd,8);
  39. shmid = Shmget(IPC_PRIVATE,sizeof(REV),0666);
  40. shmptr = (REV *)Shmat(shmid,0,0);
  41. system("clear");
  42. printf("\n\n\n\n\n\n\n\n\n\n\n");
  43. printf("\t\t Welcomed the use of ZYP InstantMessenger\n");
  44. printf("\n\n\n\n\n\n\n\n\n\n\n");// welcomescreen
  45. sleep(2);
  46. system("clear");
  47. printf("Connecting to servernow......\n");
  48. sleep(1);
  49. system("clear");
  50. printf("connect to servernow!\n");
  51. while(1)
  52. {
  53. int listenfd =-1;
  54. while(listenfd <0)//wait acceptand wait send message
  55. {
  56. listenfd = Accept(sockfd,NULL,NULL);
  57. if(shmptr->fd !=0)
  58. {
  59. Write(shmptr->fd,shmptr,200);
  60. shmptr->fd = 0;
  61. }
  62. }
  63. if(listenfd <0)
  64. {
  65. perror("accepterror!\n");
  66. exit(-1);
  67. }
  68. else
  69. {
  70. pid_t pid = fork();
  71. if(pid <0)
  72. {
  73. perror("forkerror!\n");
  74. exit(-1);
  75. }
  76. if(pid > 0)//fatherprocess
  77. {
  78. ;
  79. }
  80. if(pid == 0)//subprocess
  81. {
  82. s_login(listenfd,db,shmptr);//login
  83. MES *come = (MES *)malloc(sizeof(MES));
  84. while(1)
  85. {
  86. sqlite3_exec(db,"create table chat(timetext,sendname text,message text,tonametext)",NULL,NULL,&errmsg);//create table forchat
  87. if(Read(listenfd,come,sizeof(MES))== 0)
  88. {
  89. char *str =sqlite3_mprintf("select name from online wherefd='%d'",listenfd);
  90. sqlite3_get_table(db,str,&dbresult,&nRow,&nCoulum,&errmsg);//searchname
  91. printf("%sMandatoryreferrals\n",dbresult[1]);
  92. str = sqlite3_mprintf("delete from online wherefd='%d'",listenfd);
  93. sqlite3_exec(db,str,0,0,&errmsg);
  94. sleep(1);
  95. break;
  96. }
  97. else if(strncmp(come->message,"file",4)== 0)//transferfile
  98. {
  99. s_file(listenfd,db,come,shmptr);
  100. }
  101. else if(strncmp(come->message,"getfile",7)== 0)//downloadfile
  102. {
  103. s_getfile(listenfd);
  104. }
  105. else if(strncmp(come->message,"view",4)== 0)//viewuser online
  106. {
  107. s_view(listenfd,db,come);
  108. }
  109. else // chat
  110. {
  111. s_chat(listenfd,db,come,shmptr);
  112. }
  113. }
  114. Close(listenfd);
  115. }
  116. }
  117. }
  118. sqlite3_close(db);
  119. return0;
  120. }
#include "../../include/SC.h"int main(){    int sockfd,bindret,i,result,nRow,nCoulum;    sqlite3 *db;    char *errmsg = NULL;    char **dbresult;    char **dbresults;    char **dbresultr;    REV *shmptr = NULL;  //shmaddr    int shmid;    char buf[64];        //for transfer file    struct sockaddr_in my_addr;    int flt = 0;    memset((&my_addr),0,sizeof(my_addr));  //set zero    memset(buf,0,64);    result = sqlite3_open("../myserever.db",&db);    if(result != SQLITE_OK)    {        printf("open data base failure!\n");        exit(-1);    }    sqlite3_exec(db,"drop table online",NULL,NULL,&errmsg);    sqlite3_exec(db,"create table online(name text primary key unique,fd integer,flt integer)",NULL,NULL,&errmsg);   //create table for online    sockfd = Socket(AF_INET,SOCK_STREAM,0);    fcntl(sockfd,F_SETFL,O_NONBLOCK);   //set socket NONBLOCK    if(sockfd < 0)    {        perror("sockfd error!\n");        exit(-1);    }    my_addr.sin_family = AF_INET;    my_addr.sin_port = htons(6666);    my_addr.sin_addr.s_addr = INADDR_ANY;  //auto bind    Bind(sockfd,(struct sockaddr *)(&my_addr),sizeof(my_addr));    listen(sockfd,8);    shmid = Shmget(IPC_PRIVATE,sizeof(REV),0666);    shmptr = (REV *)Shmat(shmid,0,0);    system("clear");    printf("\n\n\n\n\n\n\n\n\n\n\n");    printf("\t\t   Welcomed the use of ZYP Instant Messenger\n");    printf("\n\n\n\n\n\n\n\n\n\n\n");   // welcome screen    sleep(2);    system("clear");    printf("Connecting to server now......\n");    sleep(1);    system("clear");    printf("connect to server now!\n");    while(1)    {        int listenfd = -1;        while(listenfd < 0)  //wait accept and wait send message        {            listenfd = Accept(sockfd,NULL,NULL);            if(shmptr->fd != 0)            {                Write(shmptr->fd,shmptr,200);                shmptr->fd = 0;            }        }        if(listenfd < 0)        {            perror("accept error!\n");            exit(-1);        }        else        {            pid_t pid = fork();            if(pid < 0)            {                perror("fork error!\n");                exit(-1);            }            if(pid > 0)     //father process            {                ;            }            if(pid == 0)    //sub process            {                s_login(listenfd,db,shmptr);//login                MES *come = (MES *)malloc(sizeof(MES));                while(1)                {                    sqlite3_exec(db,"create table chat(time text,sendname text,message text,toname text)",NULL,NULL,&errmsg); //create table for chat                    if(Read(listenfd,come,sizeof(MES)) == 0)                    {                        char *str = sqlite3_mprintf("select name from online where fd='%d'",listenfd);                        sqlite3_get_table(db,str,&dbresult,&nRow,&nCoulum,&errmsg);        //search name                        printf("%s Mandatory referrals\n",dbresult[1]);                        str = sqlite3_mprintf("delete from online where fd='%d'",listenfd);                        sqlite3_exec(db,str,0,0,&errmsg);                        sleep(1);                        break;                    }                    else if(strncmp(come->message,"file",4) == 0) //transfer file                    {                        s_file(listenfd,db,come,shmptr);                    }                    else if(strncmp(come->message,"getfile",7) == 0)  //download file                    {                        s_getfile(listenfd);                    }                    else if(strncmp(come->message,"view",4) == 0)  //view user online                    {                        s_view(listenfd,db,come);                    }                    else // chat                    {                        s_chat(listenfd,db,come,shmptr);                    }                }                Close(listenfd);            }        }   }   sqlite3_close(db);   return 0;}

s_chat.c:

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  2. #include "../../include/SC.h"
  4. voids_chat(intlistenfd,sqlite3 *db,MES*come,REV *shmptr)
  5. {
  6. inti,result,nRow,nRows,nCoulum,nCoulums;
  7. char *errmsg =NULL;
  8. char**dbresult;
  9. char**dbresults;
  10. char**dbresultr;
  11. if(come->flt == 1)//offline
  12. {
  13. char *sql =sqlite3_mprintf("select name from online wherefd='%d'",listenfd);
  14. sqlite3_get_table(db,sql,&dbresults,&nRows,&nCoulums,&errmsg);//search fd
  15. printf("%s isoffline\n",dbresults[1]);
  16. sql = sqlite3_mprintf("delete from online wherefd='%d'",listenfd);
  17. sqlite3_exec(db,sql,0,0,&errmsg);
  18. sleep(1);
  19. exit(-1);
  20. }
  21. else //chat
  22. {
  23. if(strcmp(come->name,"all")== 0)//send toall user online
  24. {
  25. char *str =sqlite3_mprintf("select flt from online wherename='%s'",come->myname);
  26. sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);//isbanned?
  27. int flt =atoi(dbresultr[1]);
  28. if(flt == 1)//not ban
  29. {
  30. char *str =sqlite3_mprintf("select fd fromonline");
  31. sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);
  32. intallfd;
  33. for(i = 1;i <=nRow;i++)
  34. {
  35. allfd = atoi(dbresultr[i]);
  36. if(allfd !=listenfd)
  37. {
  38. REV *shmsend = (REV *)malloc(sizeof(REV));
  39. shmsend->fd = allfd;
  40. strcpy(shmsend->myname,come->myname);
  41. strcpy(shmsend->message,come->message);
  42. memcpy(shmptr,shmsend,sizeof(REV));
  43. int delay =10000000;
  44. while(delay--);
  45. Free(shmsend);
  46. shmsend = NULL;
  47. }
  48. }
  49. time_t timer = time(NULL);
  50. char *tme =(char*)ctime(&timer);
  51. str = sqlite3_mprintf("insert into chatvalues('%s','%s','%s','%s')",tme,come->myname,come->message,come->name);
  52. sqlite3_exec(db,str,0,0,&errmsg);//save chat
  53. sqlite3_free_table(dbresultr);
  54. dbresultr = NULL;
  55. }
  56. else //banned
  57. {
  58. REV *jin = (REV *)malloc(sizeof(REV));
  59. memset(jin,0,sizeof(REV));
  60. strcpy(jin->myname,"Administrator");
  61. strcpy(jin->message,"Youbanned");
  62. Write(listenfd,jin,sizeof(REV));
  63. Free(jin);
  64. jin = NULL;
  65. }
  66. }
  67. else //to sb online
  68. {
  69. char *str =sqlite3_mprintf("select flt from online wherename='%s'",come->myname);
  70. sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);
  71. int flt =atoi(dbresultr[1]);
  72. if(flt ==1)
  73. {
  74. char *str =sqlite3_mprintf("select fd from online wherename='%s'",come->name);
  75. sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);
  76. int sendfd =atoi(dbresultr[1]);
  77. REV *shmsend = (REV *)malloc(sizeof(REV));
  78. shmsend->fd = sendfd;
  79. strcpy(shmsend->myname,come->myname);
  80. strcpy(shmsend->message,come->message);
  81. memcpy(shmptr,shmsend,sizeof(REV));
  82. time_t timer = time(NULL);
  83. char *tme =(char*)ctime(&timer);
  84. str = sqlite3_mprintf("insert into chatvalues('%s','%s','%s','%s')",tme,come->myname,come->message,come->name);
  85. sqlite3_exec(db,str,0,0,&errmsg); //save chat record
  86. Free(shmsend);
  87. shmsend = NULL;
  88. }
  89. else //banned
  90. {
  91. REV *jin = (REV *)malloc(sizeof(REV));
  92. memset(jin,0,sizeof(REV));
  93. strcpy(jin->myname,"Administrator");
  94. strcpy(jin->message,"Youbanned");
  95. Write(listenfd,jin,sizeof(REV));
  96. Free(jin);
  97. jin = NULL;
  98. }
  99. }
  100. }
  101. }
#include "../../include/SC.h"void s_chat(int listenfd,sqlite3 *db,MES *come,REV *shmptr){    int i,result,nRow,nRows,nCoulum,nCoulums;    char *errmsg = NULL;    char **dbresult;    char **dbresults;    char **dbresultr;    if(come->flt == 1)    //offline    {        char *sql = sqlite3_mprintf("select name from online where fd='%d'",listenfd);        sqlite3_get_table(db,sql,&dbresults,&nRows,&nCoulums,&errmsg);    //search fd         printf("%s is offline\n",dbresults[1]);        sql = sqlite3_mprintf("delete from online where fd='%d'",listenfd);        sqlite3_exec(db,sql,0,0,&errmsg);        sleep(1);        exit(-1);    }    else   //chat    {        if(strcmp(come->name,"all") == 0) //send to all user online        {            char *str = sqlite3_mprintf("select flt from online where name='%s'",come->myname);            sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);       //is banned?            int flt = atoi(dbresultr[1]);            if(flt == 1)   //not ban            {                char *str = sqlite3_mprintf("select fd from online");                sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);                int allfd;                for(i = 1;i <= nRow;i++)                {                    allfd = atoi(dbresultr[i]);                    if(allfd != listenfd)                    {                        REV *shmsend = (REV *)malloc(sizeof(REV));                        shmsend->fd = allfd;                        strcpy(shmsend->myname,come->myname);                        strcpy(shmsend->message,come->message);                        memcpy(shmptr,shmsend,sizeof(REV));                        int delay = 10000000;                        while(delay--);                        Free(shmsend);                        shmsend = NULL;                    }                }                time_t timer = time(NULL);                char *tme = (char *)ctime(&timer);                str = sqlite3_mprintf("insert into chat values('%s','%s','%s','%s')",tme,come->myname,come->message,come->name);                sqlite3_exec(db,str,0,0,&errmsg);//save chat                sqlite3_free_table(dbresultr);                dbresultr = NULL;            }            else //banned            {                REV *jin = (REV *)malloc(sizeof(REV));                memset(jin,0,sizeof(REV));                strcpy(jin->myname,"Administrator");                strcpy(jin->message,"Youbanned");                Write(listenfd,jin,sizeof(REV));                Free(jin);                jin = NULL;            }        }        else  //to sb online        {            char *str = sqlite3_mprintf("select flt from online where name='%s'",come->myname);            sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);            int flt = atoi(dbresultr[1]);            if(flt == 1)            {                char *str = sqlite3_mprintf("select fd from online where name='%s'",come->name);                sqlite3_get_table(db,str,&dbresultr,&nRow,&nCoulum,&errmsg);                int sendfd = atoi(dbresultr[1]);                REV *shmsend = (REV *)malloc(sizeof(REV));                shmsend->fd = sendfd;                strcpy(shmsend->myname,come->myname);                strcpy(shmsend->message,come->message);                memcpy(shmptr,shmsend,sizeof(REV));                time_t timer = time(NULL);                char *tme = (char *)ctime(&timer);                str = sqlite3_mprintf("insert into chat values('%s','%s','%s','%s')",tme,come->myname,come->message,come->name);                sqlite3_exec(db,str,0,0,&errmsg);  //save chat record                Free(shmsend);                shmsend = NULL;            }            else    //banned            {                REV *jin = (REV *)malloc(sizeof(REV));                memset(jin,0,sizeof(REV));                strcpy(jin->myname,"Administrator");                strcpy(jin->message,"Youbanned");                Write(listenfd,jin,sizeof(REV));                Free(jin);                jin = NULL;            }        }    }}


s_login.c:

[csharp] viewplaincopyprint?
  2. #include "../../include/SC.h"
  4. voids_login(intlistenfd,sqlite3 *db,REV*shmptr)
  5. {
  6. inti,result,nRow,nRows,nCoulum,nCoulums;
  7. int flt =0;
  8. char *errmsg =NULL;
  9. char**dbresult;
  10. char**dbresults;
  11. char**dbresultr;
  12. char *sql =NULL;
  13. MYINFO *myinfo = (MYINFO *)malloc(sizeof(MYINFO));
  14. memset(myinfo,0,sizeof(MYINFO));
  15. while(read(listenfd,myinfo,sizeof(MYINFO))== 0);
  16. if(0)//login failure and loginagain
  17. {
  18. loop4:
  19. while(Read(listenfd,myinfo,sizeof(MYINFO))== 0);
  20. gotoloop5;
  21. }
  22. loop5:
  23. if(myinfo->flt ==1)//registratoin
  24. {
  25. sql = sqlite3_mprintf("select name from peopleinfo wherename='%s'",myinfo->name);
  26. sqlite3_get_table(db,sql,&dbresult,&nRow,&nCoulum,&errmsg);
  27. if(nRow == 0)//ok
  28. {
  29. char *str1 =sqlite3_mprintf("insert into peopleinfovalues('%s','%s')",myinfo->name,myinfo->sec);
  30. char *str2 =sqlite3_mprintf("insert into onlinevalues('%s','%d','%d')",myinfo->name,listenfd,1);
  31. sqlite3_exec(db,str1,0,0,&errmsg);
  32. sqlite3_exec(db,str2,0,0,&errmsg);
  33. char *back ="yes";
  34. flt = 1;
  35. Write(listenfd,back,sizeof(back));
  36. }
  37. else //repeat
  38. {
  39. char *back ="haved";
  40. Write(listenfd,back,sizeof(back));
  41. }
  42. }
  43. else //login
  44. {
  45. sql = sqlite3_mprintf("select * from peopleinfo wherename='%s'",myinfo->name);
  46. sqlite3_get_table(db,sql,&dbresult,&nRow,&nCoulum,&errmsg);
  47. if(nRow != 0)//exist
  48. {
  49. sql = sqlite3_mprintf("select * from online wherename='%s'",myinfo->name);
  50. sqlite3_get_table(db,sql,&dbresults,&nRows,&nCoulums,&errmsg);
  51. if(nRows !=0)//online,cannot repeat login
  52. {
  53. char *back ="login";
  54. Write(listenfd,back,sizeof(back));
  55. }
  56. else // offline
  57. {
  58. if(strcmp(myinfo->sec,dbresult[3])== 0)//passwordright
  59. {
  60. sql = sqlite3_mprintf("insert into onlinevalues('%s','%d','%d')",myinfo->name,listenfd,1);
  61. sqlite3_exec(db,sql,0,0,&errmsg);
  62. if(strcmp(myinfo->name,"admin")== 0)//administrator
  63. {
  64. char *back ="ad";
  65. Write(listenfd,back,sizeof(back));
  66. goto loop7;//goto adminstratorscree
  67. }
  68. char *back ="yes";
  69. flt = 1;
  70. Write(listenfd,back,sizeof(back));
  71. }
  72. else // password error
  73. {
  74. char *back ="secerror";
  75. Write(listenfd,back,sizeof(back));
  76. }
  77. }
  78. }
  79. else //not exist
  80. {
  81. char *back ="nothave";
  82. Write(listenfd,back,sizeof(back));
  83. }
  84. }
  85. if(flt != 1)//loginfailure
  86. {
  87. gotoloop4;
  88. }
  89. printf("%s ontheline\n",myinfo->name);
  90. if(0)//administrator
  91. {
  92. loop7:
  93. printf("Administrator on theline\n");
  94. char *back =(char*)malloc(10);
  95. memset(back,0,10);
  96. while(Read(listenfd,back,sizeof(back))== 0);
  97. if(strncmp(back,"1",1)== 0)
  98. {
  99. goto loop12;//login as an ordinaryuser
  100. }
  101. else
  102. {
  103. while(1)
  104. {
  105. while(Read(listenfd,back,sizeof(back))== 0);
  106. if(strncmp(back,"a",1)== 0)//view
  107. {
  108. sql = sqlite3_mprintf("select name fromonline");
  109. sqlite3_get_table(db,sql,&dbresults,&nRows,&nCoulums,&errmsg);
  110. int *backnum =((int*)nRow);
  111. ONLINE allname;
  112. allname.num = (int)nRows;
  113. for(i = 1;i <=nRows;i++)
  114. {
  115. strcpy(allname.name[i-1],dbresults[i]);
  116. }
  117. Write(listenfd,&allname,sizeof(allname));
  118. }
  119. else if(strncmp(back,"b",1)== 0)//ban
  120. {
  121. memset(back,0,10);
  122. read(listenfd,back,10);
  123. sql = sqlite3_mprintf("update online set flt=0 wherename='%s'",back);
  124. sqlite3_exec(db,sql,NULL,NULL,&errmsg);
  125. }
  126. else if(strncmp(back,"c",1)== 0)//liftban
  127. {
  128. memset(back,0,10);
  129. read(listenfd,back,10);
  130. sql = sqlite3_mprintf("update online set flt=1 wherename='%s'",back);
  131. sqlite3_exec(db,sql,NULL,NULL,&errmsg);
  132. }
  133. else if(strncmp(back,"d",1)== 0)//kickout
  134. {
  135. memset(back,0,10);
  136. Read(listenfd,back,10);
  137. sql = sqlite3_mprintf("select fd from online wherename='%s'",back);
  138. sqlite3_get_table(db,sql,&dbresult,&nRow,&nCoulum,&errmsg);
  139. REV *ti = (REV *)malloc(sizeof(REV));
  140. strcpy(ti->myname,"Administrator");
  141. strcpy(ti->message,"exit");
  142. ti->fd = atoi(dbresult[1]);
  143. memcpy(shmptr,ti,sizeof(REV));
  144. }
  145. else //exit
  146. {
  147. printf("Administrator isoffline\n");
  148. close(listenfd);
  149. exit(0);
  150. }
  151. }
  152. }
  153. }
  154. loop12:
  155. printf("");
  156. }
#include "../../include/SC.h"void s_login(int listenfd,sqlite3 *db,REV *shmptr){    int i,result,nRow,nRows,nCoulum,nCoulums;    int flt = 0;    char *errmsg = NULL;    char **dbresult;    char **dbresults;    char **dbresultr;    char *sql = NULL;    MYINFO *myinfo = (MYINFO *)malloc(sizeof(MYINFO));    memset(myinfo,0,sizeof(MYINFO));    while(read(listenfd,myinfo,sizeof(MYINFO)) == 0);    if(0)  //login failure and login again    {        loop4:        while(Read(listenfd,myinfo,sizeof(MYINFO)) == 0);        goto loop5;    }    loop5:    if(myinfo->flt == 1) //registratoin    {        sql = sqlite3_mprintf("select name from peopleinfo where name='%s'",myinfo->name);        sqlite3_get_table(db,sql,&dbresult,&nRow,&nCoulum,&errmsg);        if(nRow == 0) //ok        {            char *str1 = sqlite3_mprintf("insert into peopleinfo values('%s','%s')",myinfo->name,myinfo->sec);            char *str2 = sqlite3_mprintf("insert into online values('%s','%d','%d')",myinfo->name,listenfd,1);            sqlite3_exec(db,str1,0,0,&errmsg);            sqlite3_exec(db,str2,0,0,&errmsg);            char *back = "yes";            flt = 1;            Write(listenfd,back,sizeof(back));        }        else //repeat        {            char *back = "haved";            Write(listenfd,back,sizeof(back));        }    }    else  //login    {        sql = sqlite3_mprintf("select * from peopleinfo where name='%s'",myinfo->name);        sqlite3_get_table(db,sql,&dbresult,&nRow,&nCoulum,&errmsg);        if(nRow != 0) //exist        {            sql = sqlite3_mprintf("select * from online where name='%s'",myinfo->name);            sqlite3_get_table(db,sql,&dbresults,&nRows,&nCoulums,&errmsg);            if(nRows != 0)//online,can not repeat login            {                char *back = "login";                Write(listenfd,back,sizeof(back));            }            else // offline            {                if(strcmp(myinfo->sec,dbresult[3]) == 0) //password right                {                    sql = sqlite3_mprintf("insert into online values('%s','%d','%d')",myinfo->name,listenfd,1);                    sqlite3_exec(db,sql,0,0,&errmsg);                    if(strcmp(myinfo->name,"admin") == 0) //administrator                    {                        char *back = "ad";                        Write(listenfd,back,sizeof(back));                        goto loop7;   //goto adminstrator scree                    }                    char *back = "yes";                    flt = 1;                    Write(listenfd,back,sizeof(back));                }                else // password error                {                    char *back = "secerror";                    Write(listenfd,back,sizeof(back));                }            }        }        else //not exist        {            char *back = "nothave";            Write(listenfd,back,sizeof(back));        }    }    if(flt != 1) //login failure    {        goto loop4;    }    printf("%s on the line\n",myinfo->name);    if(0)  //administrator    {        loop7:        printf("Administrator on the line\n");        char *back = (char *)malloc(10);        memset(back,0,10);        while(Read(listenfd,back,sizeof(back)) == 0);        if(strncmp(back,"1",1) == 0)        {            goto loop12; //login as an ordinary user        }        else        {            while(1)            {                while(Read(listenfd,back,sizeof(back)) == 0);                if(strncmp(back,"a",1) == 0) //view                {                    sql = sqlite3_mprintf("select name from online");                    sqlite3_get_table(db,sql,&dbresults,&nRows,&nCoulums,&errmsg);                    int *backnum = ((int*)nRow);                    ONLINE allname;                    allname.num = (int)nRows;                    for(i = 1;i <= nRows;i++)                    {                        strcpy(allname.name[i-1],dbresults[i]);                    }                    Write(listenfd,&allname,sizeof(allname));                }                else if(strncmp(back,"b",1) == 0)//ban                {                    memset(back,0,10);                    read(listenfd,back,10);                    sql = sqlite3_mprintf("update online set flt=0 where name='%s'",back);                    sqlite3_exec(db,sql,NULL,NULL,&errmsg);                }                else if(strncmp(back,"c",1) == 0)//lift ban                {                    memset(back,0,10);                    read(listenfd,back,10);                    sql = sqlite3_mprintf("update online set flt=1 where name='%s'",back);                    sqlite3_exec(db,sql,NULL,NULL,&errmsg);                }                else if(strncmp(back,"d",1) == 0)//kick out                {                    memset(back,0,10);                    Read(listenfd,back,10);                    sql = sqlite3_mprintf("select fd from online where name='%s'",back);                    sqlite3_get_table(db,sql,&dbresult,&nRow,&nCoulum,&errmsg);                    REV *ti = (REV *)malloc(sizeof(REV));                    strcpy(ti->myname,"Administrator");                    strcpy(ti->message,"exit");                    ti->fd = atoi(dbresult[1]);                    memcpy(shmptr,ti,sizeof(REV));                }                else //exit                {                                           printf("Administrator is offline\n");                    close(listenfd);                    exit(0);                }           }       }   }   loop12:   printf("");}


s_file.c
[csharp] viewplaincopyprint?
  2. #include "../../include/SC.h"
  4. voids_file(intlistenfd,sqlite3 *db,MES*come,REV *shmptr)
  5. {
  6. int ret;
  7. intresult,nRows,nCoulums;
  8. char **dbresults;
  9. char *errmsg =NULL;
  10. REV *file = (REV *)malloc(sizeof(REV));
  11. char *filename =(char*)malloc(60);
  12. charbuffer[128];
  13. memset(filename,0,60);
  14. file->fd = listenfd;
  15. strcpy(file->myname,come->myname);
  16. strcpy(file->message,"file");
  17. Write(listenfd,file,sizeof(REV));//send message toclient
  18. while((Read(listenfd,filename,60)== 0) || (strcmp(filename,"") == 0));
  19. if(strncmp(filename,"failure",7)== 0)
  20. {
  21. printf("transferfailure");
  22. ;
  23. }
  24. else
  25. {
  26. int fp =Open("./scopy.c",O_RDWR | O_CREAT |O_APPEND,0777);
  27. if(fp ==-1)
  28. {
  29. printf("open filefailure!\n");
  30. }
  31. else
  32. {
  33. do //transfer file
  34. {
  35. memset(buffer,0,128);
  36. ret = Read(listenfd,buffer,128);
  37. Write(fp,buffer,ret);
  38. }while(ret ==128);
  39. }
  40. Close(fp);
  41. char *str =sqlite3_mprintf("select fd from online wherename='%s'",come->name);
  42. sqlite3_get_table(db,str,&dbresults,&nRows,&nCoulums,&errmsg);
  43. int tofd =((dbresults[1][0]) - '0');
  44. file->fd = tofd; //send message to target client to download
  45. strcpy(file->myname,"getfile");
  46. strcpy(file->message,filename);
  47. memcpy(shmptr,file,sizeof(REV));
  48. }
  49. }
#include "../../include/SC.h"void s_file(int listenfd,sqlite3 *db,MES *come,REV *shmptr){    int ret;    int result,nRows,nCoulums;    char ** dbresults;    char *errmsg = NULL;    REV *file = (REV *)malloc(sizeof(REV));    char *filename = (char *)malloc(60);    char buffer[128];    memset(filename,0,60);    file->fd = listenfd;    strcpy(file->myname,come->myname);    strcpy(file->message,"file");    Write(listenfd,file,sizeof(REV)); //send message to client    while((Read(listenfd,filename,60) == 0) || (strcmp(filename,"") == 0));    if(strncmp(filename,"failure",7) == 0)    {        printf("transfer failure");        ;    }    else    {        int fp = Open("./scopy.c",O_RDWR | O_CREAT | O_APPEND,0777);        if(fp == -1)        {            printf("open file failure!\n");        }        else        {            do    //transfer file            {                memset(buffer,0,128);                ret = Read(listenfd,buffer,128);                Write(fp,buffer,ret);            }while(ret == 128);        }        Close(fp);        char *str = sqlite3_mprintf("select fd from online where name='%s'",come->name);        sqlite3_get_table(db,str,&dbresults,&nRows,&nCoulums,&errmsg);        int tofd = ((dbresults[1][0]) - '0');        file->fd = tofd;  //send message to target client to download        strcpy(file->myname,"getfile");        strcpy(file->message,filename);        memcpy(shmptr,file,sizeof(REV));    }}


s_getfile.c:

[csharp] viewplaincopyprint?
  2. #include "../../include/SC.h"
  4. voids_getfile(intlistenfd)
  5. {
  6. int ret;
  7. int fp =Open("scopy.c",O_RDONLY,0777);
  8. if(fp ==-1)
  9. {
  10. printf("openfile failure!\n");
  11. }
  12. else
  13. {
  14. char buffer[128];//for transferfile
  15. do //transfer file
  16. {
  17. memset(buffer,0,128);
  18. ret = Read(fp,buffer,128);
  19. Write(listenfd,buffer,ret);
  20. }while(ret ==128);
  21. }
  22. system("rm -rfscopy.c");//remove file
  23. }
#include "../../include/SC.h"void s_getfile(int listenfd){    int ret;    int fp = Open("scopy.c",O_RDONLY,0777);    if(fp == -1)    {        printf("open file failure!\n");    }    else    {        char buffer[128];  //for transfer file        do                   //transfer file        {            memset(buffer,0,128);            ret = Read(fp,buffer,128);            Write(listenfd,buffer,ret);        }while(ret == 128);    }    system("rm -rf scopy.c");  //remove file}


client.c:

[csharp] viewplaincopyprint?
  2. #include "../../include/SC.h"
  4. int main(intargc,char*argv[])
  5. {
  6. if(argc !=2)
  7. {
  8. printf("format: ./clientserverIP\n");
  9. exit(-1);
  10. }
  11. intsockfd;
  12. char *name =(char*)Malloc(20);
  13. structsockaddr_inmy_addr;
  14. memset((&my_addr),0,sizeof(my_addr));//setzero
  15. sockfd =Socket(AF_INET,SOCK_STREAM,0);
  16. my_addr.sin_family = AF_INET;
  17. my_addr.sin_port = htons(6666); //Port
  18. my_addr.sin_addr.s_addr = inet_addr(argv[1]);//serverIP
  19. Connect(sockfd,(structsockaddr*)(&my_addr),sizeof(my_addr));
  20. name = (char*)c_login(sockfd);//save local user name
  21. pid_t pid = Fork();
  22. if(pid == 0)//Sub process receivesthe message
  23. {
  24. c_revmesg(sockfd);
  25. }
  26. if(pid > 0)//send process send themessage
  27. {
  28. sendmesg(sockfd,name,pid);
  29. }
  30. Close(sockfd);
  31. Free(name);
  32. name = NULL;
  33. return0;
  34. }
#include "../../include/SC.h"int main(int argc,char *argv[]){    if(argc != 2)    {        printf("format:  ./client serverIP\n");        exit(-1);    }    int sockfd;    char *name = (char *)Malloc(20);    struct sockaddr_in my_addr;    memset((&my_addr),0,sizeof(my_addr));   //set zero    sockfd = Socket(AF_INET,SOCK_STREAM,0);    my_addr.sin_family = AF_INET;    my_addr.sin_port = htons(6666);   //Port    my_addr.sin_addr.s_addr = inet_addr(argv[1]); //server IP    Connect(sockfd,(struct sockaddr *)(&my_addr),sizeof(my_addr));    name = (char *)c_login(sockfd);   //save local user name    pid_t pid = Fork();    if(pid == 0)    //Sub process receives the message    {        c_revmesg(sockfd);             }    if(pid > 0)     //send process send the message    {        sendmesg(sockfd,name,pid);    }    Close(sockfd);    Free(name);    name = NULL;    return 0;}


c_login.c:

[csharp] viewplaincopyprint?
  2. #include "../../include/SC.h"
  4. char *c_login(intsockfd)
  5. {
  6. MES *message = (MES *)Malloc(sizeof(MES));//Datapacket
  7. MYINFO *myinfo = (MYINFO*)Malloc(sizeof(MYINFO));//Personal informationdata packet
  8. int i;
  9. char *nameptr =message->name;
  10. char *back =(char*)Malloc(10);
  11. char *give =(char*)Malloc(sizeof(char));
  12. char yn;
  13. system("clear");//clear screen
  14. printf("\n\n\n\n\n\n\n\n\n\n\n");
  15. printf("\t\t Welcomed the use of ZYP InstantMessenger\n");
  16. printf("\n\n\n\n\n\n\n\n\n\n\n");
  17. sleep(2);
  18. system("clear");
  19. printf("\n\n\n\n\n\n\n\n\n\n");
  20. printf("\t\t\tRegister now ?\n");
  21. loop1:
  22. printf("\tRegister(Y)/I have already registered,Loginnow(N)\n");
  23. printf("\n\n\n\n\n\n\n\n\n\n\n");
  24. setbuf(stdin,0);
  25. scanf("%c",&yn);
  26. if(yn =='Y')//register
  27. {
  28. loop2:
  29. system("clear");
  30. printf("\n");
  31. printf("Please input thename:");
  32. scanf("%s",myinfo->name);
  33. printf("Please enter your password:");
  34. scanf("%s",myinfo->sec);
  35. myinfo->flt = 1;
  36. Write(sockfd,myinfo,sizeof(MYINFO));//send personalinformation to server
  37. Read(sockfd,back,sizeof(back));//returninformation
  38. if(strcmp(back,"have")== 0)//alreadyexists
  39. {
  40. printf("\nThename you register isexisting!\n");
  41. printf("Please fill inagain!\n");
  42. sleep(1);
  43. gotoloop2;
  44. }
  45. printf("\nRegistraationsuccess!\n");
  46. printf("Welcome to the fristlogining!\n");
  47. sleep(1);
  48. system("clear");
  49. }
  50. else if(yn == 'N')//login
  51. {
  52. loop3:
  53. system("clear");
  54. printf("\n");
  55. printf("Please input thename:");
  56. scanf("%s",myinfo->name);
  57. printf("Please enter yourpassword:");
  58. scanf("%s",myinfo->sec);
  59. myinfo->flt = 0;
  60. Write(sockfd,myinfo,sizeof(MYINFO));
  61. Read(sockfd,back,sizeof(back));
  62. if(strcmp(back,"noth")== 0)//do notexist
  63. {
  64. printf("\nUserdoes not exist!\n");
  65. printf("Please fill inagain!\n");
  66. sleep(1);
  67. gotoloop3;
  68. }
  69. else if(strcmp(back,"sece")== 0)//passworderror
  70. {
  71. printf("\nPassword is notcorrect!\n");
  72. printf("Pleasefill in again!\n");
  73. sleep(1);
  74. gotoloop3;
  75. }
  76. else if(strcmp(back,"logi")== 0)//repeatlogin
  77. {
  78. printf("\nUseris logged in!\n");
  79. printf("Please fill inagain!\n");
  80. sleep(1);
  81. gotoloop3;
  82. }
  83. else if(strcmp(back,"ad")== 0)//user isadministrator
  84. {
  85. printf("\nHello!Administrator!\n");
  86. sleep(1);
  87. gotoloop8;
  88. }
  89. printf("\nLoginSuccessful!\n");
  90. sleep(1);
  91. system("clear");
  92. }
  93. else
  94. {
  95. printf("\nInvalid input!Please inputagain!\n");
  96. gotoloop1;
  97. }
  98. if(0)//for administrator
  99. {
  100. loop8:
  101. system("clear");
  102. printf("\n");
  103. printf("\n");
  104. printf("\n");
  105. loop9:
  106. printf("Pleaseselect:");
  107. setbuf(stdin,0);
  108. intchoose;
  109. scanf("%d",&choose);
  110. if((choose < 1) ||(choose > 2))
  111. {
  112. printf("Invalid input!Please inputagain!\n");
  113. gotoloop9;
  114. }
  115. if(choose == 1)//login as an ordinaryuser
  116. {
  117. memset(give,0,sizeof(give));
  118. strcpy(give,"1");
  119. Write(sockfd,give,sizeof(char));
  120. gotoloop10;
  121. }
  122. else //login asadministrator
  123. {
  124. memset(give,0,sizeof(give));
  125. strcpy(give,"2");
  126. Write(sockfd,give,sizeof(char));
  127. while(1)
  128. {
  129. system("clear");
  130. printf("\n");
  131. printf("\n");
  132. printf("\n");
  133. printf("\n");
  134. printf("\n");
  135. printf("\n");
  136. loop11:
  137. printf("Please select:");
  138. scanf("%d",&choose);
  139. if((choose < 1) ||(choose > 5))
  140. {
  141. printf("Invalid input!Please inputagain!\n");
  142. gotoloop11;
  143. }
  144. if(choose ==ADMIN_SHOW)//show user online
  145. {
  146. memset(give,0,sizeof(give));
  147. strcpy(give,"a");
  148. Write(sockfd,give,sizeof(give));
  149. ONLINE allname;
  150. Read(sockfd,&allname,sizeof(allname));
  151. printf("List of user isonline:\n");
  152. printf("--------------\n");
  153. for(i = 0;i <(allname.num);i++)
  154. {
  155. printf("%d:%s\n",i+1,allname.name[i]);
  156. }
  157. printf("--------------\n");
  158. sleep(2);
  159. }
  160. else if(choose ==ADMIN_BAN)//banwords
  161. {
  162. memset(give,0,sizeof(give));
  163. strcpy(give,"b");
  164. Write(sockfd,give,sizeof(give));
  165. printf("Please input the name of silencedpeople:");
  166. char * adname =(char*)malloc(10);
  167. scanf("%s",adname);
  168. Write(sockfd,adname,10);
  169. printf("%s is forbiddon tospeck!\n",adname);
  170. sleep(1);
  171. }
  172. else if(choose ==ADMIN_LIFT)//lift the ban
  173. {
  174. memset(give,0,sizeof(give));
  175. strcpy(give,"c");
  176. Write(sockfd,give,sizeof(char));
  177. printf("Please input the name you want to liftban:");
  178. char * adname =(char*)malloc(10);
  179. scanf("%s",adname);
  180. Write(sockfd,adname,10);
  181. printf("%s have liftban\n",adname);
  182. sleep(1);
  183. }
  184. else if(choose ==ADMIN_KICK)//kick sb out
  185. {
  186. memset(give,0,sizeof(give));
  187. strcpy(give,"d");
  188. Write(sockfd,give,sizeof(char));
  189. printf("Please input the name you want to kickout:");
  190. char * adname =(char*)malloc(10);
  191. scanf("%s",adname);
  192. Write(sockfd,adname,10);
  193. printf("%s have been kickout!\n",adname);
  194. sleep(1);
  195. }
  196. else //exit
  197. {
  198. memset(give,0,sizeof(give));
  199. strcpy(give,"e");
  200. Write(sockfd,give,sizeof(char));
  201. printf("ByeByeAdministrator!\n");
  202. Close(sockfd);
  203. exit(0);
  204. }
  205. }
  206. }
  207. }
  208. loop10:
  209. printf("");
  210. Free(message);
  211. message = NULL;
  212. Free(back);
  213. back = NULL;
  214. Free(give);
  215. give = NULL;
  216. return(char*)(myinfo->name);
  217. }
#include "../../include/SC.h"char * c_login(int sockfd){    MES *message = (MES *)Malloc(sizeof(MES));  //Data packet    MYINFO *myinfo = (MYINFO *)Malloc(sizeof(MYINFO)); //Personal information data packet    int i;    char *nameptr = message->name;    char *back = (char *)Malloc(10);    char *give = (char *)Malloc(sizeof(char));    char yn;    system("clear");       //clear screen    printf("\n\n\n\n\n\n\n\n\n\n\n");    printf("\t\t    Welcomed the use of ZYP Instant Messenger\n");    printf("\n\n\n\n\n\n\n\n\n\n\n");    sleep(2);    system("clear");    printf("\n\n\n\n\n\n\n\n\n\n");    printf("\t\t\t        Register now ?\n");    loop1:    printf("\t     Register(Y)/I have already registered,Login now(N)\n");    printf("\n\n\n\n\n\n\n\n\n\n\n");    setbuf(stdin,0);    scanf("%c",&yn);    if(yn == 'Y')   //register    {        loop2:        system("clear");        printf("\n");        printf("Please input the name:");        scanf("%s",myinfo->name);        printf("Please enter your password: ");        scanf("%s",myinfo->sec);        myinfo->flt = 1;        Write(sockfd,myinfo,sizeof(MYINFO));   //send personal information to server        Read(sockfd,back,sizeof(back)); //return information        if(strcmp(back,"have") == 0)      //already exists        {            printf("\nThe name you register is existing!\n");            printf("Please fill in again!\n");            sleep(1);            goto loop2;        }        printf("\nRegistraation success!\n");        printf("Welcome to the frist logining!\n");        sleep(1);        system("clear");    }    else if(yn == 'N')     //login    {        loop3:        system("clear");        printf("\n");        printf("Please input the name:");        scanf("%s",myinfo->name);        printf("Please enter your password:");        scanf("%s",myinfo->sec);        myinfo->flt = 0;        Write(sockfd,myinfo,sizeof(MYINFO));        Read(sockfd,back,sizeof(back));        if(strcmp(back,"noth") == 0) //do not exist        {            printf("\nUser does not exist!\n");            printf("Please fill in again!\n");            sleep(1);            goto loop3;        }        else if(strcmp(back,"sece") == 0)//password error        {            printf("\nPassword is not correct!\n");            printf("Please fill in again!\n");            sleep(1);            goto loop3;        }        else if(strcmp(back,"logi") == 0)//repeat login        {            printf("\nUser is logged in!\n");            printf("Please fill in again!\n");            sleep(1);            goto loop3;        }        else if(strcmp(back,"ad") == 0)//user is administrator        {            printf("\nHello! Administrator!\n");            sleep(1);            goto loop8;        }        printf("\nLogin Successful!\n");        sleep(1);        system("clear");    }    else    {        printf("\nInvalid input!Please input again!\n");        goto loop1;    }    if(0)   //for administrator    {        loop8:        system("clear");        printf("\n");        printf("\n");        printf("\n");        loop9:        printf("Please select:");        setbuf(stdin,0);        int choose;        scanf("%d",&choose);        if((choose < 1) || (choose > 2))        {            printf("Invalid input!Please input again!\n");            goto loop9;        }        if(choose == 1)  //login as an ordinary user        {            memset(give,0,sizeof(give));            strcpy(give,"1");            Write(sockfd,give,sizeof(char));            goto loop10;        }        else             //login as administrator        {            memset(give,0,sizeof(give));            strcpy(give,"2");            Write(sockfd,give,sizeof(char));            while(1)            {                system("clear");                printf("\n");                printf("\n");                printf("\n");                printf("\n");                printf("\n");                printf("\n");                loop11:                printf("Please select:");                scanf("%d",&choose);                if((choose < 1) || (choose > 5))                {                    printf("Invalid input!Please input again!\n");                    goto loop11;                }                if(choose == ADMIN_SHOW)  // show user online                {                    memset(give,0,sizeof(give));                    strcpy(give,"a");                    Write(sockfd,give,sizeof(give));                    ONLINE allname;                    Read(sockfd,&allname,sizeof(allname));                    printf("List of user is online:\n");                    printf("--------------\n");                    for(i = 0;i < (allname.num);i++)                    {                        printf("%d:%s\n",i+1,allname.name[i]);                    }                    printf("--------------\n");                    sleep(2);                }                else if(choose == ADMIN_BAN)  //ban words                {                    memset(give,0,sizeof(give));                    strcpy(give,"b");                    Write(sockfd,give,sizeof(give));                    printf("Please input the name of silenced people:");                    char * adname = (char *)malloc(10);                    scanf("%s",adname);                    Write(sockfd,adname,10);                    printf("%s is forbiddon to speck!\n",adname);                    sleep(1);                }                else if(choose == ADMIN_LIFT)  //lift the ban                {                    memset(give,0,sizeof(give));                    strcpy(give,"c");                    Write(sockfd,give,sizeof(char));                    printf("Please input the name you want to lift ban:");                    char * adname = (char *)malloc(10);                    scanf("%s",adname);                    Write(sockfd,adname,10);                    printf("%s have lift ban\n",adname);                    sleep(1);                }                else if(choose == ADMIN_KICK)  //kick sb out                {                    memset(give,0,sizeof(give));                    strcpy(give,"d");                    Write(sockfd,give,sizeof(char));                    printf("Please input the name you want to kick out:");                    char * adname = (char *)malloc(10);                    scanf("%s",adname);                    Write(sockfd,adname,10);                    printf("%s have been kick out!\n",adname);                    sleep(1);                }                else                     //exit                {                    memset(give,0,sizeof(give));                    strcpy(give,"e");                    Write(sockfd,give,sizeof(char));                    printf("ByeBye Administrator!\n");                    Close(sockfd);                    exit(0);                }            }        }    }    loop10:    printf("");    Free(message);    message = NULL;    Free(back);    back = NULL;    Free(give);    give = NULL;    return (char *)(myinfo->name);   }


c_revmessage.c:

[csharp] viewplaincopyprint?
  2. #include "../../include/SC.h"
  4. voidc_revmesg(intsockfd)
  5. {
  6. REV *revinfo = (REV *)malloc(sizeof(REV));
  7. intfp,ret,i;
  8. char buffer[128];//for sendfile
  9. while(1)
  10. {
  11. if((Read(sockfd,revinfo,sizeof(REV)))== 0)//serverexit
  12. {
  13. printf("The server have toexit!\n");
  14. exit(-1);
  15. }
  16. else
  17. {
  18. if((strncmp(revinfo->message,"exit",4)== 0))//kickout
  19. {
  20. printf("Youhave been kicked out!\n");
  21. kill(getppid(),9);
  22. exit(-1);
  23. }
  24. else if(strncmp(revinfo->myname,"view",4)== 0)//show useris online
  25. {
  26. ONLINE allname;
  27. memset(&allname,0,sizeof(ONLINE));
  28. Read(sockfd,&allname,sizeof(ONLINE));//reviceallname
  29. printf("List of user isonline:\n");
  30. printf("------------------\n");
  31. for(i = 0;i <allname.num;i++)
  32. {
  33. printf("%d:%s\n",i+1,allname.name[i]);
  34. }
  35. printf("------------------\n");
  36. }
  37. else if(strncmp(revinfo->myname,"getfile",7)== 0)//downloadfile
  38. {
  39. fp = open("./copy.c",O_WRONLY | O_CREAT |O_APPEND,0777);
  40. if(fp ==-1)
  41. {
  42. printf("openfailure!\n");
  43. }
  44. else
  45. {
  46. MES *getfile = (MES *)malloc(sizeof(MES));
  47. getfile->flt = 0;
  48. strcpy(getfile->myname,"zzzz");
  49. strcpy(getfile->message,"getfile");
  50. strcpy(getfile->name,"zzzz");
  51. Write(sockfd,getfile,sizeof(MES));
  52. do //download
  53. {
  54. memset(buffer,0,128);
  55. ret = read(sockfd,buffer,128);
  56. Write(fp,buffer,ret);
  57. }while(ret ==128);
  58. printf("revicea file!\n");
  59. }
  60. close(fp);
  61. }
  62. else if(strncmp(revinfo->message,"file",4)== 0)
  63. {
  64. char *filename =(char*)malloc(60);
  65. strcpy(filename,revinfo->myname);
  66. printf("Transferring file%s\n",filename);
  67. if((fp =Open(filename,O_RDONLY,0777)) == -1)
  68. {
  69. //printf("open file failure!\n");
  70. strcpy(filename,"failure");
  71. Write(sockfd,filename,60); //send filename
  72. }
  73. else
  74. {
  75. Write(sockfd,filename,60);
  76. sleep(1);
  77. do
  78. {
  79. memset(buffer,0,128);
  80. ret = Read(fp,buffer,128);
  81. Write(sockfd,buffer,ret);
  82. }while(ret ==128);
  83. printf("Transfer file %ssuccess!\n",filename);
  84. }
  85. close(fp);
  86. }
  87. else
  88. {
  89. if((strcmp(revinfo->myname,"")== 0) || (strcmp(revinfo->message,"") ==0))
  90. {
  91. ;
  92. }
  93. else
  94. {
  95. time_t timer = time(NULL); //time show
  96. structtm *local =localtime(&timer);
  97. printf("\n%sd:d:d\n",revinfo->myname,local->tm_hour,local->tm_min,local->tm_sec);
  98. puts(revinfo->message);
  99. }
  100. }
  101. }
  102. }
  103. }
#include "../../include/SC.h"void c_revmesg(int sockfd){    REV *revinfo = (REV *)malloc(sizeof(REV));    int fp,ret,i;    char buffer[128];   //for send file    while(1)    {        if((Read(sockfd,revinfo,sizeof(REV))) == 0) //server exit        {            printf("The server have to exit!\n");            exit(-1);        }        else        {            if((strncmp(revinfo->message,"exit",4) == 0))//kick out            {                printf("You have been kicked out!\n");                kill(getppid(),9);                exit(-1);            }            else if(strncmp(revinfo->myname,"view",4) == 0)//show user is online            {                ONLINE allname;                memset(&allname,0,sizeof(ONLINE));                Read(sockfd,&allname,sizeof(ONLINE));  //revice allname                printf("List of user is online:\n");                printf("------------------\n");                for(i = 0;i < allname.num;i++)                {                    printf("%d:%s\n",i+1,allname.name[i]);                }                printf("------------------\n");            }            else if(strncmp(revinfo->myname,"getfile",7) == 0)//download file            {                fp = open("./copy.c",O_WRONLY | O_CREAT | O_APPEND,0777);                if(fp == -1)                {                    printf("open failure!\n");                }                else                {                    MES *getfile = (MES *)malloc(sizeof(MES));                    getfile->flt = 0;                    strcpy(getfile->myname,"zzzz");                    strcpy(getfile->message,"getfile");                    strcpy(getfile->name,"zzzz");                    Write(sockfd,getfile,sizeof(MES));                    do         //download                    {                        memset(buffer,0,128);                        ret = read(sockfd,buffer,128);                        Write(fp,buffer,ret);                    }while(ret == 128);                    printf("revice a file!\n");                }                close(fp);            }            else if(strncmp(revinfo->message,"file",4) == 0)            {                char *filename = (char *)malloc(60);                strcpy(filename,revinfo->myname);                printf("Transferring file %s\n",filename);                if((fp = Open(filename,O_RDONLY,0777)) == -1)                {                    //printf("open file failure!\n");                    strcpy(filename,"failure");                    Write(sockfd,filename,60); //send filename                }                else                {                    Write(sockfd,filename,60);                    sleep(1);                    do                    {                        memset(buffer,0,128);                        ret = Read(fp,buffer,128);                        Write(sockfd,buffer,ret);                    }while(ret == 128);                    printf("Transfer file %s success!\n",filename);                }                close(fp);            }             else            {                if((strcmp(revinfo->myname,"") == 0) || (strcmp(revinfo->message,"") == 0))                {                    ;                }                else                {                    time_t timer = time(NULL); //time show                    struct tm *local = localtime(&timer);                    printf("\n%s  d:d:d\n",revinfo->myname,local->tm_hour,local->tm_min,local->tm_sec);                    puts(revinfo->message);                }            }        }    }}


c_sendmessgae.c:

[csharp] viewplaincopyprint?
  2. #include "../../include/SC.h"
  4. voidsendmesg(intsockfd,char*name,intpid)
  5. {
  6. MES *message = (MES *)malloc(sizeof(MES));//Datapacket
  7. char *nameptr =message->name;
  8. while(1)
  9. {
  10. strcpy(message->myname,name);
  11. if(message->name ==nameptr)//conncet to sb
  12. {
  13. loop6:
  14. printf("Please enter thecontact:");
  15. setbuf(stdin,0);
  16. scanf("%s",message->name);
  17. setbuf(stdin,0);
  18. nameptr = NULL;
  19. }
  20. setbuf(stdin,0);
  21. fgets(message->message,200,stdin);
  22. setbuf(stdin,0);
  23. message->flt = 0;
  24. if(!strncmp(message->message,"quit",4))//offline
  25. {
  26. message->flt = 1;
  27. Write(sockfd,message,200);
  28. close(sockfd);
  29. kill(pid,9);
  30. exit(-1);
  31. }
  32. if(!(strncmp(message->message,"change",6)))//changechat
  33. {
  34. gotoloop6;
  35. }
  36. if(!(strncmp(message->message,"file",4)))//transferfile
  37. {
  38. system("clear");
  39. system("ls");
  40. printf("Please input filename totransfer:");
  41. scanf("%s",message->myname);
  42. }
  43. if(!(strncmp(message->message,"/hello",6)))
  44. {
  45. strcpy(message->message,"^_^");
  46. }
  47. Write(sockfd,message,200);
  48. }
  49. }
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