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Code Issues Releases Wiki Activity

fixed potential crashes when setting fontsize to a too large value

This commit is contained in:
Zeno Rogue 2021-02-06 01:39:46 +01:00
parent 015f6227fa
commit 317e2637ec
2 changed files with 22 additions and 8 deletions
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28
basegraph.cpp
View File

@ -118,7 +118,15 @@ EX int getnext(const char* s, int& i) {
}
#if CAP_SDLTTF
TTF_Font *font[256];
const int max_font_size = 288;
TTF_Font* font[max_font_size+1];
void fix_font_size(int& size) {
if(size < 1) size = 1;
if(size > max_font_size) size = max_font_size;
if(size > 72) size &=~ 3;
if(size > 144) size &=~ 7;
}
#endif
#if CAP_SDL
@ -142,6 +150,7 @@ EX color_t& qpixel(SDL_Surface *surf, int x, int y) {
EX string fontpath = ISWEB ? "sans-serif" : HYPERPATH "DejaVuSans-Bold.ttf";
void loadfont(int siz) {
fix_font_size(siz);
if(!font[siz]) {
font[siz] = TTF_OpenFont(fontpath.c_str(), siz);
// Destination set by ./configure (in the GitHub repository)
@ -160,6 +169,7 @@ void loadfont(int siz) {
#if !ISFAKEMOBILE && !ISANDROID & !ISIOS
int textwidth(int siz, const string &str) {
fix_font_size(siz);
if(isize(str) == 0) return 0;
#if CAP_SDLTTF
@ -357,7 +367,8 @@ struct glfont_t {
float tx0[CHARS], tx1[CHARS], ty0[CHARS], ty1[CHARS];
};
glfont_t *glfont[256];
const int max_glfont_size = 72;
glfont_t *glfont[max_glfont_size+1];
typedef Uint16 texturepixel;
@ -441,12 +452,14 @@ void init_glfont(int size) {
#else
SDL_Surface *txt;
int siz = size;
fix_font_size(siz);
if(ch < 128) {
str[0] = ch;
txt = TTF_RenderText_Blended(font[size], str, white);
txt = TTF_RenderText_Blended(font[siz], str, white);
}
else {
txt = TTF_RenderUTF8_Blended(font[size], natchars[ch-128], white);
txt = TTF_RenderUTF8_Blended(font[siz], natchars[ch-128], white);
}
if(txt == NULL) continue;
#if CAP_CREATEFONT
@ -481,7 +494,7 @@ void init_glfont(int size) {
int gl_width(int size, const char *s) {
int gsiz = size;
if(size > vid.fsize || size > 72) gsiz = 72;
if(size > vid.fsize || size > max_glfont_size) gsiz = max_glfont_size;
#if CAP_FIXEDSIZE
gsiz = CAP_FIXEDSIZE;
@ -514,7 +527,7 @@ glhr::textured_vertex charvertex(int x1, int y1, ld tx, ld ty) {
bool gl_print(int x, int y, int shift, int size, const char *s, color_t color, int align) {
int gsiz = size;
if(size > vid.fsize || size > 72) gsiz = 72;
if(size > vid.fsize || size > max_glfont_size) gsiz = max_glfont_size;
#if CAP_FIXEDSIZE
gsiz = CAP_FIXEDSIZE;
@ -584,7 +597,7 @@ EX void resetGL() {
DEBBI(DF_INIT | DF_GRAPH, ("reset GL"))
callhooks(hooks_resetGL);
#if CAP_GLFONT
for(int i=0; i<128; i++) if(glfont[i]) {
for(int i=0; i<max_glfont_size; i++) if(glfont[i]) {
delete glfont[i];
glfont[i] = NULL;
}
@ -702,6 +715,7 @@ EX bool displaystr(int x, int y, int shift, int size, const char *str, color_t c
col.r >>= darken; col.g >>= darken; col.b >>= darken;
fix_font_size(size);
loadfont(size);
SDL_Surface *txt = ((vid.antialias & AA_FONT)?TTF_RenderUTF8_Blended:TTF_RenderUTF8_Solid)(font[size], str, col);

2
hud.cpp
View File

@ -518,7 +518,7 @@ EX void drawStats() {
rows = 0;
while((buttonsize = minsize - vid.killreduction)) {
columns = colspace / buttonsize;
rows = rowspace / buttonsize;
rows = rowspace / buttonsize; if(!rows) return;
int coltaken = 0;
for(int z=0; z<4; z++) {
if(z == 2 && !portrait) {