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Kernel: Fix TTY ANSI CSI m and prevent crash :)

This commit is contained in:
Bananymous 2025-02-06 20:58:03 +02:00
parent 4212f48d7a
commit faa5252191
2 changed files with 16 additions and 8 deletions
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2
kernel/include/kernel/Terminal/VirtualTTY.h
View File

@ -30,7 +30,7 @@ namespace Kernel
void reset_ansi(); void reset_ansi();
void handle_ansi_csi(uint8_t ch); void handle_ansi_csi(uint8_t ch);
void handle_ansi_csi_color(); void handle_ansi_csi_color(uint8_t ch);
void putchar_at(uint32_t codepoint, uint32_t x, uint32_t y); void putchar_at(uint32_t codepoint, uint32_t x, uint32_t y);
void render_from_buffer(uint32_t x, uint32_t y); void render_from_buffer(uint32_t x, uint32_t y);
void set_cursor_position(uint32_t x, uint32_t y); void set_cursor_position(uint32_t x, uint32_t y);

18
kernel/kernel/Terminal/VirtualTTY.cpp
View File

@ -110,12 +110,11 @@ namespace Kernel
m_state = State::Normal; m_state = State::Normal;
} }
void VirtualTTY::handle_ansi_csi_color() void VirtualTTY::handle_ansi_csi_color(uint8_t ch)
{ {
ASSERT(m_write_lock.current_processor_has_lock()); ASSERT(m_write_lock.current_processor_has_lock());
switch (m_ansi_state.nums[0]) switch (ch)
{ {
case -1:
case 0: case 0:
m_foreground = TerminalColor::BRIGHT_WHITE; m_foreground = TerminalColor::BRIGHT_WHITE;
m_background = TerminalColor::BLACK; m_background = TerminalColor::BLACK;
@ -165,18 +164,25 @@ namespace Kernel
void VirtualTTY::handle_ansi_csi(uint8_t ch) void VirtualTTY::handle_ansi_csi(uint8_t ch)
{ {
constexpr size_t max_ansi_args = sizeof(m_ansi_state.nums) / sizeof(*m_ansi_state.nums);
ASSERT(m_write_lock.current_processor_has_lock()); ASSERT(m_write_lock.current_processor_has_lock());
switch (ch) switch (ch)
{ {
case '0': case '1': case '2': case '3': case '4': case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': case '5': case '6': case '7': case '8': case '9':
{
if ((size_t)m_ansi_state.index >= max_ansi_args)
dwarnln("Only {} arguments supported with ANSI codes", max_ansi_args);
else
{ {
int32_t& val = m_ansi_state.nums[m_ansi_state.index]; int32_t& val = m_ansi_state.nums[m_ansi_state.index];
val = (val == -1) ? (ch - '0') : (val * 10 + ch - '0'); val = (val == -1) ? (ch - '0') : (val * 10 + ch - '0');
}
return; return;
} }
case ';': case ';':
m_ansi_state.index++; m_ansi_state.index = BAN::Math::min<size_t>(m_ansi_state.index + 1, max_ansi_args);
return; return;
case 'A': // Cursor Up case 'A': // Cursor Up
if (m_ansi_state.nums[0] == -1) if (m_ansi_state.nums[0] == -1)
@ -308,7 +314,9 @@ namespace Kernel
dprintln_if(DEBUG_VTTY, "Unsupported ANSI CSI character f"); dprintln_if(DEBUG_VTTY, "Unsupported ANSI CSI character f");
return; return;
case 'm': case 'm':
handle_ansi_csi_color(); handle_ansi_csi_color(BAN::Math::max(m_ansi_state.nums[0], 0));
for (int i = 1; i < m_ansi_state.index; i++)
handle_ansi_csi_color(BAN::Math::max(m_ansi_state.nums[i], 0));
return reset_ansi(); return reset_ansi();
case 's': case 's':
m_saved_row = m_row; m_saved_row = m_row;