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add server, incredibly annoying hex hack

This commit is contained in:
zongor 2023-09-10 18:51:11 -04:00
parent cb77591be1
commit 79859bbec7
11 changed files with 351 additions and 33 deletions
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BIN
common/sql/test.db3
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36
fortran/client/main.f90
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@ -10,6 +10,7 @@ program main
type(vector3) :: npc_position
type(vector3) :: player_position
real(c_float) :: npc_dir
logical :: player_updated
!
! implement a login and logout screen
@ -31,6 +32,10 @@ program main
call set_target_fps(60_c_int)
!
! do login stuff here
!
!Main game loop
do while (.not. window_should_close()) ! Detect window close button or ESC key
@ -51,17 +56,19 @@ program main
camera%target%y = player_position%y
camera%target%z = player_position%z
if (npc_position%x < -10) then
npc_dir = 0.1_c_float
else if (npc_position%x > 10) then
npc_dir = -0.1_c_float
end if
npc_position%x = npc_position%x + npc_dir
!
! implement a user input for texting
! https://www.raylib.com/examples/text/loader.html?name=text_input_box
!
! if player updated
! send new player postition to server
! else
! send ping to server
! read response
! for each user in logged in
! if (npc_position%x < -10) then
! npc_dir = 0.1_c_float
! else if (npc_position%x > 10) then
! npc_dir = -0.1_c_float
! end if
! npc_position%x = npc_position%x + npc_dir
call begin_drawing()
call clear_background(RAYWHITE)
@ -70,10 +77,7 @@ program main
! Draw floor
call draw_grid(30_c_int, 1.0_c_float)
! Draw user & others text over them
! https://www.raylib.com/examples/text/loader.html?name=text_draw_3d
!Draw npc cube
! Draw other users
call draw_cube(npc_position, 0.5_c_float, 0.5_c_float, 0.5_c_float, GRAY)
call draw_cube_wires(npc_position, 0.5_c_float, 0.5_c_float, 0.5_c_float, DARKGRAY)
@ -85,6 +89,10 @@ program main
end do
!
! send logout call to server
!
call close_window() !Close window and OpenGL context
contains

24
fortran/server/README.md Normal file
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@ -0,0 +1,24 @@
# server
- request
- int :: request_type
- ping
- login
- logout
- move
- str(24) :: username
- int :: timestamp
- str(?) :: data
- int :: data_length
- double :: x_pos
- double :: y_pos
- response
- int :: response_type
- int :: number_of_records
- array :: records
- str(24) :: username
- str(24) :: color
- double :: x_pos
- double :: y_pos

37
fortran/server/app/main.f90 Normal file
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@ -0,0 +1,37 @@
program main
use, intrinsic :: iso_c_binding
use iso_fortran_env
use :: sqlite3
use db
implicit none
character, dimension(:), allocatable :: form_data
character(len=128):: db_path
integer :: err, i, length
logical :: exist
inquire (file="debug.log", exist=exist)
if (exist) then
open (12, file="debug.log", status="old", position="append", action="write")
else
open (12, file="debug.log", status="new", action="write")
end if
! do while not logged out
! read message from stdin
! if ping then get all logged in users and return their positions to client
! if move update new pos to database
! if logout update logged_in to database
! end do
! send logout all to clients
contains
end program main

19
fortran/server/fpm.toml Normal file
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@ -0,0 +1,19 @@
name = "fortran-mmo-server"
version = "0.1.0"
license = "MIT"
author = "zongor"
maintainer = "admin@alfrescocavern.com"
copyright = "Copyright 2023, zongor"
[build]
auto-executables = true
auto-tests = true
auto-examples = true
module-naming = false
[install]
library = false
[fortran]
implicit-typing = false
implicit-external = false
source-form = "free"
[dependencies]
fortran-sqlite3 = { git = "https://github.com/interkosmos/fortran-sqlite3.git" }

196
fortran/server/src/db.f90 Normal file
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@ -0,0 +1,196 @@
! db.f90
module db
!! Database abstraction layer.
use, intrinsic :: iso_c_binding
use :: sqlite3
implicit none
private
integer, parameter, public :: DB_OK = SQLITE_OK
type, public :: db_type
type(c_ptr) :: ptr = c_null_ptr
end type db_type
public :: db_close
public :: db_open
public :: db_create_users
public :: db_get_logged_in_users
public :: db_add_user
public :: db_delete_user
private :: db_error
private :: db_exec
contains
integer function db_open(db, path) result(rc)
!! Opens database.
type(db_type), intent(inout) :: db
character(len=*), intent(in) :: path
rc = sqlite3_open(path, db%ptr)
call db_error(rc, 'sqlite3_open()')
end function db_open
integer function db_exec(db, query) result(rc)
!! Executes SQLite query.
type(db_type), intent(inout) :: db
character(len=*), intent(in) :: query
character(len=:), allocatable :: err_msg
rc = sqlite3_exec(db%ptr, query, c_null_ptr, c_null_ptr, err_msg)
call db_error(rc, 'sqlite3_exec()', err_msg)
end function db_exec
integer function db_close(db) result(rc)
!! Closes database.
type(db_type), intent(inout) :: db
rc = sqlite3_close(db%ptr)
call db_error(rc, 'sqlite3_close()')
end function db_close
integer function db_create_users(db) result(rc)
!! Creates database tables.
type(db_type), intent(inout) :: db
! Create table "users".
rc = db_exec(db, "CREATE TABLE users " &
// "(id INTEGER PRIMARY KEY ASC, " &
// "username TEXT, password TEXT, " &
// "apperance_r INTEGER, apperance_g INTEGER, apperance_b INTEGER, " &
// "x_pos REAL, y_pos REAL, logged_in INTEGER, " &
// "created INTEGER);")
if (rc /= SQLITE_OK) return
end function db_create_users
integer function db_add_user(db, username, password, apperance_r, apperance_g, apperance_b, &
x_pos, y_pos, logged_in, created) result(rc)
!! Adds student to database.
type(db_type), intent(inout) :: db
character(len=*), intent(in) :: username
character(len=*), intent(in) :: password
integer(kind=c_int), intent(in) :: apperance_r
integer(kind=c_int), intent(in) :: apperance_g
integer(kind=c_int), intent(in) :: apperance_b
real(kind=c_double), intent(in) :: x_pos
real(kind=c_double), intent(in) :: y_pos
integer(kind=c_int), intent(in) :: logged_in
integer(kind=c_int), intent(in) :: created
type(c_ptr) :: stmt
! Insert values through prepared statement.
rc = sqlite3_prepare_v2(db%ptr, "INSERT INTO users(username, password, " &
//"apperance_r, apperance_g, apperance_b, x_pos, y_pos, logged_in, created) VALUES (?,?,?,?,?,?,?,?,?)", stmt)
call db_error(rc, 'sqlite3_prepare_v2()')
rc = sqlite3_bind_text(stmt, 1, username)
call db_error(rc, 'sqlite3_bind_text()')
rc = sqlite3_bind_text(stmt, 2, password)
call db_error(rc, 'sqlite3_bind_text()')
rc = sqlite3_bind_int(stmt, 3, apperance_r)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_int(stmt, 4, apperance_g)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_int(stmt, 5, apperance_b)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_double(stmt, 6, x_pos)
call db_error(rc, 'sqlite3_bind_double()')
rc = sqlite3_bind_double(stmt, 7, y_pos)
call db_error(rc, 'sqlite3_bind_double()')
rc = sqlite3_bind_int(stmt, 8, logged_in)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_int(stmt, 9, created)
call db_error(rc, 'sqlite3_bind_int()')
! Insert bound value into database.
rc = sqlite3_step(stmt)
call db_error(rc, 'sqlite3_step()')
! Clean-up prepared statement.
rc = sqlite3_finalize(stmt)
call db_error(rc, 'sqlite3_finalize()')
end function db_add_user
integer function db_delete_user(db, username) result(rc)
!! Adds student to database.
type(db_type), intent(inout) :: db
character(len=*), intent(in) :: username
type(c_ptr) :: stmt
! Insert values through prepared statement.
rc = sqlite3_prepare_v2(db%ptr, "DELETE FROM users WHERE users.username = ?;", stmt)
call db_error(rc, 'sqlite3_prepare_v2()')
rc = sqlite3_bind_text(stmt, 1, username)
call db_error(rc, 'sqlite3_bind_text()')
! Insert bound value into database.
rc = sqlite3_step(stmt)
call db_error(rc, 'sqlite3_step()')
! Clean-up prepared statement.
rc = sqlite3_finalize(stmt)
call db_error(rc, 'sqlite3_finalize()')
end function db_delete_user
integer function db_get_logged_in_users(db) result(rc)
!! Prints number of courses per student to standard output.
type(db_type), intent(inout) :: db
type(c_ptr) :: stmt
character(len=24) :: username
real(kind=c_double) :: x_pos, y_pos
rc = sqlite3_prepare_v2(db%ptr, &
"SELECT username, x_pos, y_pos " // &
"FROM users u WHERE u.logged_in = 1;", stmt)
call db_error(rc, 'sqlite3_prepare_v2()')
step_loop: do
rc = sqlite3_step(stmt)
select case (rc)
case (SQLITE_ROW)
username = sqlite3_column_text(stmt, 0)
x_pos = sqlite3_column_double(stmt, 1)
y_pos = sqlite3_column_double(stmt, 1)
write(12, *) username, x_pos, y_pos
case (SQLITE_DONE)
exit step_loop
case default
call db_error(rc, 'sqlite3_step()')
exit step_loop
end select
end do step_loop
rc = sqlite3_finalize(stmt)
call db_error(rc, 'sqlite3_finalize()')
end function db_get_logged_in_users
subroutine db_error(code, proc, err_msg)
!! Prints error message.
integer, intent(in) :: code
character(len=*), intent(in), optional :: proc
character(len=*), intent(in), optional :: err_msg
if (code == SQLITE_OK .or. code == SQLITE_DONE) return
if (present(proc) .and. present(err_msg)) then
write(12, '(a, ": ", a, " (", i0, ")")') proc, err_msg, code
return
end if
if (present(proc)) then
write(12, '(a, ": ", i0)') proc, code
return
end if
write(12, '("unknown error: ", i0)') code
end subroutine db_error
end module db

2
fortran/server/test.sh Executable file
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@ -0,0 +1,2 @@
#!/bin/sh
listen1 'tcp!*!1234' ~/.local/bin/fortran-micro-httpd ../../common/html/index.html ../../common/sql/test.db3

1
fortran/www/README.md
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@ -172,3 +172,4 @@ On a `POST` request it will parse the body and insert the user data into the dat
This is probably the longest I have had to take for the smallest amount of actual features for anything I have created yet.
Also the hex to integer just doesnt work at all so I had to implement one myself....

31
fortran/www/app/main.f90
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@ -58,7 +58,7 @@ contains
integer :: i, j, s_idx, e_idx, username_len, password_len
character(len=24) :: username
character(len=24) :: password
character(len=8) :: appearance
integer :: appearance_r, appearance_g, appearance_b
real(kind=c_double) :: x_pos = 0.0_c_double
real(kind=c_double) :: y_pos = 0.0_c_double
logical :: start = .false.
@ -108,16 +108,39 @@ contains
get_appearance: do i = e_idx + 2, length
if (request(i) .eq. '=') then
s_idx = i + 1
s_idx = i + 4
end if
end do get_appearance
appearance = transfer(request(s_idx:length), appearance)
appearance_r = hex2int(request(s_idx), request(s_idx+1))
appearance_g = hex2int(request(s_idx+2), request(s_idx+3))
appearance_b = hex2int(request(s_idx+4), request(s_idx+5))
rc = db_open(db, db_path(:Len_Trim(db_path)))
rc = db_add_user(db, username(:username_len), password(:password_len), &
appearance(:Len_Trim(appearance)), x_pos, y_pos, 0, time())
appearance_r, appearance_g, appearance_b, x_pos, y_pos, 0, time())
rc = db_close(db)
end subroutine add_user
integer function hex2int(h1, h2) result(val)
character, intent(in) :: h1
character, intent(in) :: h2
integer :: a, b
if (ichar(h1) .le. ichar('9')) then
a = ichar(h1) - ichar('0')
else
a = iand(ichar(h1), 7) + 9
end if
if (ichar(h2) .le. ichar('9')) then
b = ichar(h2) - ichar('0')
else
b = iand(ichar(h2), 7) + 9
end if
val = shiftl(a, 4) + b
end function hex2int
end program main

2
fortran/www/fpm.toml
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@ -1,6 +1,6 @@
author = "zongor"
copyright = "Copyright 2023, zongor"
license = "license"
license = "MIT"
maintainer = "admin@alfrescocavern.com"
name = "fortran-micro-httpd"
version = "0.1.0"

34
fortran/www/src/db.f90
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@ -59,18 +59,22 @@ contains
rc = db_exec(db, "CREATE TABLE users " &
// "(id INTEGER PRIMARY KEY ASC, " &
// "username TEXT, password TEXT, " &
// "apperance TEXT, x_pos REAL, " &
// "y_pos REAL, logged_in INTEGER, " &
// "apperance_r INTEGER, apperance_g INTEGER, apperance_b INTEGER, " &
// "x_pos REAL, y_pos REAL, logged_in INTEGER, " &
// "created INTEGER);")
if (rc /= SQLITE_OK) return
end function db_create_users
integer function db_add_user(db, username, password, apperance, x_pos, y_pos, logged_in, created) result(rc)
integer function db_add_user(db, username, password, apperance_r, apperance_g, apperance_b, &
x_pos, y_pos, logged_in, created) result(rc)
!! Adds student to database.
type(db_type), intent(inout) :: db
character(len=*), intent(in) :: username
character(len=*), intent(in) :: password
character(len=*), intent(in) :: apperance
integer(kind=c_int), intent(in) :: apperance_r
integer(kind=c_int), intent(in) :: apperance_g
integer(kind=c_int), intent(in) :: apperance_b
real(kind=c_double), intent(in) :: x_pos
real(kind=c_double), intent(in) :: y_pos
integer(kind=c_int), intent(in) :: logged_in
@ -79,22 +83,26 @@ contains
! Insert values through prepared statement.
rc = sqlite3_prepare_v2(db%ptr, "INSERT INTO users(username, password, " &
//"apperance, x_pos, y_pos, logged_in, created) VALUES (?,?,?,?,?,?,?)", stmt)
//"apperance_r, apperance_g, apperance_b, x_pos, y_pos, logged_in, created) VALUES (?,?,?,?,?,?,?,?,?)", stmt)
call db_error(rc, 'sqlite3_prepare_v2()')
rc = sqlite3_bind_text(stmt, 1, username)
call db_error(rc, 'sqlite3_bind_text()')
rc = sqlite3_bind_text(stmt, 2, password)
call db_error(rc, 'sqlite3_bind_text()')
rc = sqlite3_bind_text(stmt, 3, apperance)
call db_error(rc, 'sqlite3_bind_text()')
rc = sqlite3_bind_double(stmt, 4, x_pos)
call db_error(rc, 'sqlite3_bind_double()')
rc = sqlite3_bind_double(stmt, 5, y_pos)
call db_error(rc, 'sqlite3_bind_double()')
rc = sqlite3_bind_int(stmt, 6, logged_in)
rc = sqlite3_bind_int(stmt, 3, apperance_r)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_int(stmt, 7, created)
rc = sqlite3_bind_int(stmt, 4, apperance_g)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_int(stmt, 5, apperance_b)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_double(stmt, 6, x_pos)
call db_error(rc, 'sqlite3_bind_double()')
rc = sqlite3_bind_double(stmt, 7, y_pos)
call db_error(rc, 'sqlite3_bind_double()')
rc = sqlite3_bind_int(stmt, 8, logged_in)
call db_error(rc, 'sqlite3_bind_int()')
rc = sqlite3_bind_int(stmt, 9, created)
call db_error(rc, 'sqlite3_bind_int()')
! Insert bound value into database.