int parse_tftp_url(char *url, char **host, char **path, int *port)
{
char *pos, *end;
int l = 1;
if (url == NULL || strncasecmp(url, "tftp://", 7) != 0)
goto fail;
pos = url + 7;
*port = 0;
end = strchr(pos, ':');
if (end != NULL)
*port = 0x010000;
else
end = strchr(pos, '/');
if (end == NULL) {
end = pos + strlen(pos);
l = 0;
}
*end = '\0';
*host = pos;
if (!isvalhostname(*host))
goto fail;
pos = end + l;
if (*port) {
end = strchr(pos, '/');
if (end == NULL) {
end = pos + strlen(pos);
l = 0;
}
*end = '\0';
*port = isport(pos);
if (*port == 0)
goto fail;
pos = end + l;
} else
*port = 69;
*path = pos;
if (!**path)
return DEFAULTFILE;
l = isvalpath(pos);
if (!l)
goto fail;
if (pos[l - 1] == '/')
return DEFAULTFILE;
return FULLPATH;
fail:
*host = NULL;
*path = NULL;
*port = 0;
return -1;
}
int islegal(char *data[],int ln){
int id=0;
if (strcmp(data[0], "BSRule") != 0){
printf("规则语句出现语法错误，规则头应为BSRule，在 %d 行\n",ln);
return 1;
}
if (strcmp(data[1], "http") != 0 &&
strcmp(data[1], "tcp") != 0 &&
strcmp(data[1], "udp") != 0 &&
strcmp(data[1], "tcp") != 0){
printf("规则语句出现语法错误，协议类型错误，在 %d 行\n",ln);
return 2;
}
if (!isip(data[2]) || !isport(data[3])){
printf("规则语句出现语法错误，第一部分IP或端口数据错误，在 %d 行\n",ln);
return 3;
}
if (strcmp(data[4],"->")!=0 &&
strcmp(data[4],"<-")!=0 &&
strcmp(data[4],"<->")!=0 ){
printf("规则语句出现语法错误，数据流方向符错误，在 %d 行\n",ln);
return 4;
}
if(!isip(data[5]) || !isport(data[6])){
printf("规则语句出现语法错误，第二部分IP或端口数据错误，在 %d 行\n",ln);
return 5;
}
if(!isid(data[8])){
printf("规则语句出现语法错误，规则ID号不合法，在 %d 行\n",ln);
return 8;
}
if(!isuniq(id)){
id = atoi(data[8]);
printf("规则语句出现语法错误，规则ID号不唯一，在 %d 行\n",ln);
return 8;
}
return 0;
}
