tcpserver : malloc
Philippe PITTOLI
parent
f3f7927d25
commit
a35ba9ce45
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@ -21,212 +21,209 @@
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int init_connection(void)
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{
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int sock = socket(AF_INET, SOCK_STREAM, 0);
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struct sockaddr_in sin = { 0 };
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int sock = socket(AF_INET, SOCK_STREAM, 0);
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struct sockaddr_in sin = { 0 };
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if(sock == -1)
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{
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perror("socket()");
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exit(errno);
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}
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if(sock == -1)
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{
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perror("socket()");
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exit(errno);
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}
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sin.sin_addr.s_addr = htonl(INADDR_ANY);
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sin.sin_port = htons(PORT);
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sin.sin_family = AF_INET;
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sin.sin_addr.s_addr = htonl(INADDR_ANY);
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sin.sin_port = htons(PORT);
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sin.sin_family = AF_INET;
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if(bind(sock,(struct sockaddr *) &sin, sizeof sin) == -1)
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{
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perror("bind()");
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exit(errno);
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}
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if(bind(sock,(struct sockaddr *) &sin, sizeof sin) == -1)
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{
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perror("bind()");
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exit(errno);
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}
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if(listen(sock, 5) == -1)
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{
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perror("listen()");
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exit(errno);
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}
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if(listen(sock, 5) == -1)
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{
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perror("listen()");
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exit(errno);
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}
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return sock;
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return sock;
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}
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void write_message(int sock, const char *buffer)
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{
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if(send(sock, buffer, strlen(buffer), 0) < 0)
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{
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perror("send()");
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exit(errno);
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}
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if(send(sock, buffer, strlen(buffer), 0) < 0)
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{
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perror("send()");
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exit(errno);
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}
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}
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int read_message(int sock, char *buffer)
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{
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int n = 0;
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if((n = recv(sock, buffer, BUF_SIZE - 1, 0)) < 0)
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{
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perror("recv()");
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/* if recv error we disonnect the client */
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n = 0;
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}
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buffer[n] = 0;
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return n;
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return recv(sock, buffer, BUF_SIZE - 1, 0);
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}
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void endConnection(int sock) {
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close(sock);
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close(sock);
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}
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void printClientAddr(struct sockaddr_in *csin) {
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printf("New client\n");
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printf("IP Addr : %s\n", inet_ntoa(csin->sin_addr));
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printf("Port : %u\n", ntohs(csin->sin_port));
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printf("New client\n");
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printf("IP Addr : %s\n", inet_ntoa(csin->sin_addr));
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printf("Port : %u\n", ntohs(csin->sin_port));
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}
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void * service_thread(void * c_data) {
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client_data *cda = (client_data*) c_data;
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char buffer[BUF_SIZE];
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char *service;
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int version;
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int clientSock = cda->sfd;
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client_data *cda = (client_data*) c_data;
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char buffer[BUF_SIZE];
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char *service;
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int version;
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int clientSock = cda->sfd;
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if (read_message(clientSock, buffer) == -1) {
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perror("read_message()");
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return NULL;
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}else {
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parseServiceVersion(buffer, &service, &version);
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}
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/* TODO : service correspond au service que le client veut utiliser
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** il faut comparer service à un tableau qui contient les services
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** disponibles
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*/
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if (read_message(clientSock, buffer) == -1) {
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perror("read_message()");
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return NULL;
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}else {
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parseServiceVersion(buffer, &service, &version);
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}
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//path service
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char * servicePath = (char*) calloc((strlen(TMPDIR) + strlen(service) + 1), sizeof(char));
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if (servicePath == NULL) {
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perror("calloc()");
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}
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strcat(servicePath, TMPDIR);
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strcat(servicePath, service);
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/* TODO : service correspond au service que le client veut utiliser
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** il faut comparer service à un tableau qui contient les services
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** disponibles
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*/
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//pid index version
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char * piv = (char*) calloc(PATH_MAX, sizeof(char));
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if (piv == NULL) {
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perror("calloc()");
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}
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makePivMessage(&piv, getpid(), cda->index, version);
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printf("piv : %s\n",piv );
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//path service
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char * servicePath = malloc (strlen(TMPDIR) + strlen(service) + 1);
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memset (servicePath, 0, strlen(TMPDIR) + strlen(service) + 1);
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//write pid index version in T/I/S of service
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int ret = file_write(servicePath, piv, strlen(piv));
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if(ret == 0) {
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perror("file_write()");
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free(servicePath);
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free(piv);
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return NULL;
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}
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if (servicePath == NULL) {
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perror("malloc()");
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}
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strcat(servicePath, TMPDIR);
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strcat(servicePath, service);
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// gets the service path, such as /tmp/ipc/pid-index-version-in/out
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char *pathname[2];
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pathname[0] = (char*) calloc(PATH_MAX, sizeof(char));
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if (pathname[0] == NULL) {
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perror("calloc()");
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}
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pathname[1] = (char*) calloc(PATH_MAX, sizeof(char));
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if (pathname[1] == NULL) {
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perror("calloc()");
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}
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inOutPathCreate(pathname, cda->index, version);
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//pid index version
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char * piv = (char*) malloc(PATH_MAX);
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memset(piv , 0, PATH_MAX);
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if (piv == NULL) {
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perror("malloc()");
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}
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makePivMessage(&piv, getpid(), cda->index, version);
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printf("piv : %s\n",piv );
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//create in out files
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if(fifo_create(pathname[0]) != 0) {
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perror("fifo_create()");
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return NULL;
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}
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//write pid index version in T/I/S of service
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int ret = file_write(servicePath, piv, strlen(piv));
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if(ret == 0) {
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perror("file_write()");
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free(servicePath);
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free(piv);
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return NULL;
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}
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if(fifo_create(pathname[1]) != 0) {
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perror("fifo_create()");
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return NULL;
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}
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// gets the service path, such as /tmp/ipc/pid-index-version-in/out
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char *pathname[2];
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pathname[0] = (char*) malloc(PATH_MAX);
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memset(pathname[0], 0, PATH_MAX);
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if (pathname[0] == NULL) {
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perror("malloc()");
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}
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pathname[1] = malloc(PATH_MAX);
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memset(pathname[1] , 0, PATH_MAX);
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if (pathname[1] == NULL) {
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perror("malloc()");
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}
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inOutPathCreate(pathname, cda->index, version);
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//open -in fifo file
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int fdin = open (pathname[0], O_RDWR);
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//create in out files
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if(fifo_create(pathname[0]) != 0) {
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perror("fifo_create()");
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return NULL;
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}
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if(fifo_create(pathname[1]) != 0) {
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perror("fifo_create()");
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return NULL;
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}
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//open -in fifo file
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int fdin = open (pathname[0], O_RDWR);
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if (fdin <= 0) {
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printf("open: fd < 0\n");
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perror ("open()");
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return NULL;
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}
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//utilisation du select() pour surveiller la socket du client et fichier in
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fd_set rdfs;
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int max = clientSock > fdin ? clientSock : fdin;
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//utilisation du select() pour surveiller la socket du client et fichier in
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fd_set rdfs;
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int max = clientSock > fdin ? clientSock : fdin;
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printf("Waitting for new messages :\n" );
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while(1) {
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FD_ZERO(&rdfs);
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printf("Waitting for new messages :\n" );
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while(1) {
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FD_ZERO(&rdfs);
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/* add STDIN_FILENO */
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FD_SET(STDIN_FILENO, &rdfs);
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/* add STDIN_FILENO */
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FD_SET(STDIN_FILENO, &rdfs);
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//add client's socket
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FD_SET(clientSock, &rdfs);
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//add client's socket
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FD_SET(clientSock, &rdfs);
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//add in file
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FD_SET(fdin, &rdfs);
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//add in file
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FD_SET(fdin, &rdfs);
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if(select(max + 1, &rdfs, NULL, NULL, NULL) == -1)
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{
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perror("select()");
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exit(errno);
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}
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if(select(max + 1, &rdfs, NULL, NULL, NULL) == -1)
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{
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perror("select()");
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exit(errno);
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}
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/* something from standard input : i.e keyboard */
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if(FD_ISSET(STDIN_FILENO, &rdfs))
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{
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/* stop process when type on keyboard */
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printf("thread %d shutdown\n", cda->index );
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break;
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}else /*if (FD_ISSET(fdin, &rdfs))*/{
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if (FD_ISSET(clientSock, &rdfs)) {
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if(read_message(clientSock, buffer) > 0) {
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printf("message : %s\n",buffer );
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if(file_write(pathname[1], buffer, strlen(buffer)) < 0) {
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perror("file_write");
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}
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printf("ok\n");
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}
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}
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/* something from standard input : i.e keyboard */
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if(FD_ISSET(STDIN_FILENO, &rdfs))
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{
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/* stop process when type on keyboard */
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printf("thread %d shutdown\n", cda->index );
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break;
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}else /*if (FD_ISSET(fdin, &rdfs))*/{
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if (FD_ISSET(clientSock, &rdfs)) {
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int n = 0;
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n = read_message(clientSock, buffer);
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if(n > 0) {
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if(file_write(pathname[1], buffer, strlen(buffer)) < 0) {
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perror("file_write");
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}
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printf("ok\n");
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}
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printf("message (%d bytes) : %s\n", n, buffer);
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}
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if (FD_ISSET(fdin, &rdfs)) {
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if (FD_ISSET(fdin, &rdfs)) {
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if(read(fdin, &buffer, BUF_SIZE) < 0) {
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perror("read()");
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}
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printf("message from file in : %s\n", buffer );
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}
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}
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}
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if(read(fdin, &buffer, BUF_SIZE) < 0) {
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perror("read()");
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}
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printf("message from file in : %s\n", buffer );
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}
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}
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memset (buffer, 0, BUF_SIZE);
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}
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//free
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free(servicePath);
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free(piv);
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free(service);
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free(pathname[0]);
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free(pathname[1]);
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//close the files descriptors
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close(fdin);
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close(clientSock);
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//free
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free(servicePath);
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free(piv);
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free(service);
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free(pathname[0]);
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free(pathname[1]);
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return NULL;
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//close the files descriptors
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close(fdin);
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close(clientSock);
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return NULL;
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}
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void parseServiceVersion(char * buf, char ** service, int *version) {
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char *token = NULL, *saveptr = NULL;
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char *token = NULL, *saveptr = NULL;
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char *str = NULL;
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int i = 0;
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@ -281,135 +278,135 @@ int fifo_create (char * path)
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}
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void inOutPathCreate(char ** pathname, int index, int version) {
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int length = snprintf( NULL, 0, "%d", version );
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char* versionStr = malloc( length + 2 );
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snprintf( versionStr, length + 1, "%d", version );
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int length = snprintf( NULL, 0, "%d", version );
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char* versionStr = malloc( length + 2 );
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snprintf( versionStr, length + 1, "%d", version );
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int length2 = snprintf( NULL, 0, "%d", getpid() );
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char * pidprocess = malloc( length2 + 1 );
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snprintf( pidprocess, length2 + 1, "%d", getpid() );
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int length2 = snprintf( NULL, 0, "%d", getpid() );
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char * pidprocess = malloc( length2 + 1 );
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snprintf( pidprocess, length2 + 1, "%d", getpid() );
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int length3 = snprintf( NULL, 0, "%d", index );
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char* indexStr = malloc( length3 + 1 );
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snprintf( indexStr, length3 + 1, "%d", index );
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int length3 = snprintf( NULL, 0, "%d", index );
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char* indexStr = malloc( length3 + 1 );
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snprintf( indexStr, length3 + 1, "%d", index );
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strcat(pathname[0], TMPDIR);
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strcat(pathname[0], pidprocess);
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strcat(pathname[0], "-");
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strcat(pathname[0], indexStr);
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strcat(pathname[0], "-");
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strcat(pathname[0], versionStr);
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strcat(pathname[0], "-in");
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strcat(pathname[1], TMPDIR);
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strcat(pathname[1], pidprocess);
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strcat(pathname[1], "-");
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strcat(pathname[1], indexStr);
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strcat(pathname[1], "-");
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strcat(pathname[1], versionStr);
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strcat(pathname[1], "-out");
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strcat(pathname[0], TMPDIR);
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strcat(pathname[0], pidprocess);
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strcat(pathname[0], "-");
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strcat(pathname[0], indexStr);
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strcat(pathname[0], "-");
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strcat(pathname[0], versionStr);
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strcat(pathname[0], "-in");
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free(pidprocess);
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free(indexStr);
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free(versionStr);
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strcat(pathname[1], TMPDIR);
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strcat(pathname[1], pidprocess);
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strcat(pathname[1], "-");
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strcat(pathname[1], indexStr);
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strcat(pathname[1], "-");
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strcat(pathname[1], versionStr);
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strcat(pathname[1], "-out");
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free(pidprocess);
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free(indexStr);
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free(versionStr);
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}
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void makePivMessage (char ** piv, int pid, int index, int version) {
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int length1 = snprintf( NULL, 0, "%d", getpid() );
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char * pidprocess = malloc( length1 + 1 );
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snprintf( pidprocess, length1 + 1, "%d", getpid() );
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int length1 = snprintf( NULL, 0, "%d", getpid() );
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char * pidprocess = malloc( length1 + 1 );
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snprintf( pidprocess, length1 + 1, "%d", getpid() );
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int length2 = snprintf( NULL, 0, "%d", index );
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char* indexStr = malloc( length2 + 1 );
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snprintf( indexStr, length2 + 1, "%d", index );
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int length2 = snprintf( NULL, 0, "%d", index );
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char* indexStr = malloc( length2 + 1 );
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snprintf( indexStr, length2 + 1, "%d", index );
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int length3 = snprintf( NULL, 0, "%d", version );
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char* versionStr = malloc( length3 + 2 );
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snprintf( versionStr, length3 + 1, "%d", version );
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int length3 = snprintf( NULL, 0, "%d", version );
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char* versionStr = malloc( length3 + 2 );
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snprintf( versionStr, length3 + 1, "%d", version );
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strcat(*piv, pidprocess);
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strcat(*piv, " ");
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strcat(*piv, indexStr);
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strcat(*piv, " ");
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strcat(*piv, versionStr);
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strcat(*piv, pidprocess);
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strcat(*piv, " ");
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strcat(*piv, indexStr);
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strcat(*piv, " ");
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strcat(*piv, versionStr);
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free(pidprocess);
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free(indexStr);
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free(versionStr);
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free(pidprocess);
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free(indexStr);
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free(versionStr);
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}
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int main(int argc, char * argv[], char **env) {
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//client
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client_data tab_client[NBCLIENT];
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pthread_t tab_service_threads[NBCLIENT];
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int actual = 0;
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int i;
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//client
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client_data tab_client[NBCLIENT];
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pthread_t tab_service_threads[NBCLIENT];
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int actual = 0;
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int i;
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int sock = init_connection();
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fd_set rdfs;
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int max = sock;
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int sock = init_connection();
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fd_set rdfs;
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int max = sock;
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printf("Waitting for new clients :\n" );
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while(1) {
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FD_ZERO(&rdfs);
|
||||
printf("Waitting for new clients :\n" );
|
||||
while(1) {
|
||||
FD_ZERO(&rdfs);
|
||||
|
||||
/* add STDIN_FILENO */
|
||||
FD_SET(STDIN_FILENO, &rdfs);
|
||||
/* add STDIN_FILENO */
|
||||
FD_SET(STDIN_FILENO, &rdfs);
|
||||
|
||||
//add client's socket
|
||||
FD_SET(sock, &rdfs);
|
||||
//add client's socket
|
||||
FD_SET(sock, &rdfs);
|
||||
|
||||
if(select(max + 1, &rdfs, NULL, NULL, NULL) == -1)
|
||||
{
|
||||
perror("select()");
|
||||
exit(errno);
|
||||
}
|
||||
if(select(max + 1, &rdfs, NULL, NULL, NULL) == -1)
|
||||
{
|
||||
perror("select()");
|
||||
exit(errno);
|
||||
}
|
||||
|
||||
/* something from standard input : i.e keyboard */
|
||||
if(FD_ISSET(STDIN_FILENO, &rdfs))
|
||||
{
|
||||
/* stop process when type on keyboard */
|
||||
// for (i = 0; i < actual; i++) {
|
||||
// if (pthread_cancel(tab_service_threads[i]) != 0) {
|
||||
// printf("Aucun thread correspond \n");
|
||||
// }
|
||||
// }
|
||||
printf("server shutdown\n");
|
||||
break;
|
||||
}
|
||||
else if (FD_ISSET(sock, &rdfs)){
|
||||
//New client
|
||||
socklen_t sinsize = sizeof (struct sockaddr_in);
|
||||
tab_client[actual].sfd = accept(sock, (struct sockaddr *)&tab_client[actual].c_addr, &sinsize);
|
||||
if(tab_client[actual].sfd == -1)
|
||||
{
|
||||
perror("accept()");
|
||||
close(sock);
|
||||
exit(errno);
|
||||
}
|
||||
printClientAddr(&tab_client[actual].c_addr);
|
||||
/* something from standard input : i.e keyboard */
|
||||
if(FD_ISSET(STDIN_FILENO, &rdfs))
|
||||
{
|
||||
/* stop process when type on keyboard */
|
||||
// for (i = 0; i < actual; i++) {
|
||||
// if (pthread_cancel(tab_service_threads[i]) != 0) {
|
||||
// printf("Aucun thread correspond \n");
|
||||
// }
|
||||
// }
|
||||
printf("server shutdown\n");
|
||||
break;
|
||||
}
|
||||
else if (FD_ISSET(sock, &rdfs)){
|
||||
//New client
|
||||
socklen_t sinsize = sizeof (struct sockaddr_in);
|
||||
tab_client[actual].sfd = accept(sock, (struct sockaddr *)&tab_client[actual].c_addr, &sinsize);
|
||||
if(tab_client[actual].sfd == -1)
|
||||
{
|
||||
perror("accept()");
|
||||
close(sock);
|
||||
exit(errno);
|
||||
}
|
||||
printClientAddr(&tab_client[actual].c_addr);
|
||||
|
||||
tab_client[actual].index = actual;
|
||||
|
||||
int ret = pthread_create( &tab_service_threads[actual], NULL, &service_thread, (void *) &tab_client[actual]);
|
||||
if (ret) {
|
||||
perror("pthread_create()");
|
||||
endConnection(sock);
|
||||
exit(errno);
|
||||
} else {
|
||||
printf("Creation of listen thread %d\n", actual);
|
||||
}
|
||||
tab_client[actual].index = actual;
|
||||
|
||||
max = tab_client[actual].sfd > max ? tab_client[actual].sfd : max;
|
||||
actual++;
|
||||
}
|
||||
}
|
||||
int ret = pthread_create( &tab_service_threads[actual], NULL, &service_thread, (void *) &tab_client[actual]);
|
||||
if (ret) {
|
||||
perror("pthread_create()");
|
||||
endConnection(sock);
|
||||
exit(errno);
|
||||
} else {
|
||||
printf("Creation of listen thread %d\n", actual);
|
||||
}
|
||||
|
||||
for (i = 0; i < actual; i++) {
|
||||
pthread_join(tab_service_threads[i], NULL);
|
||||
}
|
||||
max = tab_client[actual].sfd > max ? tab_client[actual].sfd : max;
|
||||
actual++;
|
||||
}
|
||||
}
|
||||
|
||||
endConnection(sock);
|
||||
for (i = 0; i < actual; i++) {
|
||||
pthread_join(tab_service_threads[i], NULL);
|
||||
}
|
||||
|
||||
return 0;
|
||||
endConnection(sock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Reference in New Issue