int msg_analyse(int cnt_fd, const char * xml_msg, int msg_len)
{
//char n = 0; //子节点计数器
xmlDocPtr xml_fd = NULL; //xml描述符
xmlNodePtr xml_root = NULL, //xml的root节点
curNode = NULL; //xml的子节点
xmlKeepBlanksDefault(0);//忽视xml中的空格，避免读出node = text的空节点
/*读取msg内容*/
xml_fd = xmlParseMemory(xml_msg, msg_len);
if(xml_fd == NULL)
{
printf("read file error\n");
return ERRX_READ_FILE;
}
/*获取msg中的root元素*/
xml_root = xmlDocGetRootElement(xml_fd);
if(xml_root == NULL)
{
printf("get element error\n");
return ERRX_GET_ELEMENT;
}
/* 匹配xml的根结点
* login
* signin
* upload
* download
* */
if( !xmlStrcmp(xml_root->name, BAD_CAST "login") )
{ //root == "login"
printf("login user: %s\nlogin pwd: %s\n",
xmlNodeGetContent(xml_root->xmlChildrenNode),
xmlNodeGetContent(xml_root->xmlChildrenNode->next));
}
else if( !xmlStrcmp(xml_root->name, BAD_CAST "signin") )
{ //root == "signin"
//获取用户名和密码
printf("signin user: %s\nsignin pwd: %s\n",
xmlNodeGetContent(xml_root->xmlChildrenNode),
xmlNodeGetContent(xml_root->xmlChildrenNode->next));
}
else if( !xmlStrcmp(xml_root->name, BAD_CAST "upload") )
{ //root == "upload"
recv_files(cnt_fd);
}
else if( !xmlStrcmp(xml_root->name, BAD_CAST "download") )
{ //root == "download"
//send_files();
}
else
{ return ERRX_TAG_NOT_MATCH;}
xmlFreeDoc(xml_fd);
xmlCleanupParser();
return 0;
}
//process recv's command thread
int processer()
{
command *current_com;
unsigned int mode, opt;
while (1) {
sem_wait(&msg_empty);
pthread_mutex_lock(&msg_lock);
current_com = mlist.com_head;
mlist.com_head = current_com->next;
pthread_mutex_unlock(&msg_lock);
if (current_com == NULL) {
continue;
}
mode = GET_MODE(current_com->com_num);
opt = GET_OPT(current_com->com_num);
switch (mode) {
case IPMSG_BR_ENTRY:
send_recventry(current_com);
pthread_mutex_lock(&user_lock);
add_user(current_com);
pthread_mutex_unlock(&user_lock);
free(current_com);
break;
case IPMSG_BR_EXIT:
pthread_mutex_lock(&user_lock);
del_user(current_com);
pthread_mutex_unlock(&user_lock);
free(current_com);
break;
case IPMSG_ANSENTRY:
pthread_mutex_lock(&user_lock);
add_user(current_com);
pthread_mutex_unlock(&user_lock);
free(current_com);
break;
case IPMSG_SENDMSG:
if (opt & IPMSG_SENDCHECKOPT) {
send_check(current_com);
}
if (opt & IPMSG_FILEATTACHOPT) {
printf("IN PRO SENDMSG: receive file.\n");
recv_files(current_com);
}else {
putout_msg(current_com);
free(current_com);
}
break;
case IPMSG_RECVMSG:
free(current_com);
break;
case IPMSG_GETFILEDATA:
free(current_com);
break;
case IPMSG_GETDIRFILES:
free(current_com);
break;
case IPMSG_RELEASEFILES:
free(current_com);
break;
default:
free(current_com);
break;
}
}
return 0;
}
static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name)
{
int pid;
int status = 0;
int error_pipe[2];
/* The receiving side mustn't obey this, or an existing symlink that
* points to an identical file won't be replaced by the referent. */
copy_links = 0;
if (preserve_hard_links)
init_hard_links();
if (fd_pair(error_pipe) < 0) {
rsyserr(FERROR, errno, "pipe failed in do_recv");
exit_cleanup(RERR_IPC);
}
io_flush(NORMAL_FLUSH);
if ((pid = do_fork()) == -1) {
rsyserr(FERROR, errno, "fork failed in do_recv");
exit_cleanup(RERR_IPC);
}
if (pid == 0) {
close(error_pipe[0]);
if (f_in != f_out)
close(f_out);
/* we can't let two processes write to the socket at one time */
close_multiplexing_out();
/* set place to send errors */
set_msg_fd_out(error_pipe[1]);
recv_files(f_in, flist, local_name);
io_flush(FULL_FLUSH);
handle_stats(f_in);
send_msg(MSG_DONE, "", 0);
io_flush(FULL_FLUSH);
/* Handle any keep-alive packets from the post-processing work
* that the generator does. */
if (protocol_version >= 29) {
kluge_around_eof = -1;
/* This should only get stopped via a USR2 signal. */
while (read_int(f_in) == flist->count
&& read_shortint(f_in) == ITEM_IS_NEW) {}
rprintf(FERROR, "Invalid packet at end of run [%s]\n",
who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
/* Finally, we go to sleep until our parent kills us with a
* USR2 signal. We sleep for a short time, as on some OSes
* a signal won't interrupt a sleep! */
while (1)
msleep(20);
}
am_generator = 1;
close_multiplexing_in();
if (write_batch && !am_server)
stop_write_batch();
close(error_pipe[1]);
if (f_in != f_out)
close(f_in);
io_start_buffering_out();
set_msg_fd_in(error_pipe[0]);
generate_files(f_out, flist, local_name);
handle_stats(-1);
io_flush(FULL_FLUSH);
if (protocol_version >= 24) {
/* send a final goodbye message */
write_int(f_out, -1);
}
io_flush(FULL_FLUSH);
set_msg_fd_in(-1);
kill(pid, SIGUSR2);
wait_process(pid, &status);
return status;
}
