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fix buffer overruns in file enumeration

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@2290 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
TimeServ 2006-05-19 19:15:52 +00:00
parent 4b88bb7293
commit d2584c26b9
5 changed files with 64 additions and 64 deletions
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8
engine/client/sys_linux.c
View file

@ -267,7 +267,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
if (s < apath) //didn't find a '/'
*apath = '\0';
sprintf(truepath, "%s/%s", gpath, apath);
Q_snprintfz(truepath, sizeof(truepath), "%s/%s", gpath, apath);
//printf("truepath = %s\n", truepath);
@ -288,18 +288,18 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
if (*ent->d_name != '.')
if (wildcmp(match, ent->d_name))
{
snprintf(file, sizeof(file)-1, "%s/%s", gpath, ent->d_name);
Q_snprintfz(file, sizeof(file), "%s/%s", gpath, ent->d_name);
//would use stat, but it breaks on fat32.
if ((dir2 = opendir(file)))
{
closedir(dir2);
snprintf(file, sizeof(file)-1, "%s%s/", apath, ent->d_name);
Q_snprintfz(file, sizeof(file), "%s%s/", apath, ent->d_name);
//printf("is directory = %s\n", file);
}
else
{
snprintf(file, sizeof(file)-1, "%s%s", apath, ent->d_name);
Q_snprintfz(file, sizeof(file), "%s%s", apath, ent->d_name);
//printf("file = %s\n", file);
}

8
engine/client/sys_win.c
View file

@ -375,7 +375,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
if (!gpath)
return 0;
// strcpy(apath, match);
sprintf(apath, "%s/%s", gpath, match);
Q_snprintfz(apath, sizeof(apath), "%s/%s", gpath, match);
for (s = apath+strlen(apath)-1; s> apath; s--)
{
if (*s == '/')
@ -384,7 +384,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
*s = '\0';
//this is what we ask windows for.
sprintf(file, "%s/*.*", apath);
Q_snprintfz(file, sizeof(file), "%s/*.*", apath);
//we need to make apath contain the path in match but not gpath
Q_strncpyz(apath2, match, sizeof(apath));
@ -409,7 +409,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
{
if (wildcmp(match, fd.cFileName))
{
sprintf(file, "%s%s/", apath2, fd.cFileName);
Q_snprintfz(file, sizeof(file), "%s%s/", apath2, fd.cFileName);
go = func(file, fd.nFileSizeLow, parm);
}
}
@ -417,7 +417,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
{
if (wildcmp(match, fd.cFileName))
{
sprintf(file, "%s%s", apath2, fd.cFileName);
Q_snprintfz(file, sizeof(file), "%s%s", apath2, fd.cFileName);
go = func(file, fd.nFileSizeLow, parm);
}
}

96
engine/common/common.c
View file

@ -328,54 +328,6 @@ int Q_strcasecmp (char *s1, char *s2)
#endif
// Q_ftoa: convert IEEE 754 float to a base-10 string with "infinite" decimal places
void Q_ftoa(char *str, float in)
{
unsigned int i = *((int *)&in);
int signbit = (i & 0x80000000) >> 31;
int exp = (signed int)((i & 0x7F800000) >> 23) - 127;
int mantissa = (i & 0x007FFFFF);
if (exp == 128) // 255(NaN/Infinity bits) - 127(bias)
{
if (signbit)
{
*str = '-';
str++;
}
if (mantissa == 0) // infinity
strcpy(str, "1.#INF");
else // NaN or indeterminate
strcpy(str, "1.#NAN");
return;
}
exp = -exp;
exp = (int)(exp * 0.30102999957f); // convert base 2 to base 10
exp += 8;
if (exp <= 0)
sprintf(str, "%f", in);
else
{
char tstr[8];
char *lsig = str - 1;
sprintf(tstr, "%%.%if", exp);
sprintf(str, tstr, in);
// find last significant digit and trim
while (*str)
{
if (*str >= '1' && *str <= '9')
lsig = str;
else if (*str == '.')
lsig = str - 1;
str++;
}
lsig[1] = '\0';
}
}
char *Q_strlwr(char *s)
{
char *ret=s;
@ -433,6 +385,54 @@ int wildcmp(char *wild, char *string)
return !*wild;
}
// Q_ftoa: convert IEEE 754 float to a base-10 string with "infinite" decimal places
void Q_ftoa(char *str, float in)
{
unsigned int i = *((int *)&in);
int signbit = (i & 0x80000000) >> 31;
int exp = (signed int)((i & 0x7F800000) >> 23) - 127;
int mantissa = (i & 0x007FFFFF);
if (exp == 128) // 255(NaN/Infinity bits) - 127(bias)
{
if (signbit)
{
*str = '-';
str++;
}
if (mantissa == 0) // infinity
strcpy(str, "1.#INF");
else // NaN or indeterminate
strcpy(str, "1.#NAN");
return;
}
exp = -exp;
exp = (int)(exp * 0.30102999957f); // convert base 2 to base 10
exp += 8;
if (exp <= 0)
sprintf(str, "%.0f", in);
else
{
char tstr[8];
char *lsig = str - 1;
sprintf(tstr, "%%.%if", exp);
sprintf(str, tstr, in);
// find last significant digit and trim
while (*str)
{
if (*str >= '1' && *str <= '9')
lsig = str;
else if (*str == '.')
lsig = str - 1;
str++;
}
lsig[1] = '\0';
}
}
int Q_atoi (char *str)
{
int val;

8
engine/server/sv_sys_unix.c
View file

@ -743,7 +743,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
if (s < apath) //didn't find a '/'
*apath = '\0';
sprintf(truepath, "%s/%s", gpath, apath);
Q_snprintfz(truepath, sizeof(truepath), "%s/%s", gpath, apath);
//printf("truepath = %s\n", truepath);
@ -764,18 +764,18 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
if (*ent->d_name != '.')
if (wildcmp(match, ent->d_name))
{
snprintf(file, sizeof(file)-1, "%s/%s", gpath, ent->d_name);
Q_snprintfz(file, sizeof(file), "%s/%s", gpath, ent->d_name);
//would use stat, but it breaks on fat32.
if ((dir2 = opendir(file)))
{
closedir(dir2);
snprintf(file, sizeof(file)-1, "%s%s/", apath, ent->d_name);
Q_snprintfz(file, sizeof(file), "%s%s/", apath, ent->d_name);
//printf("is directory = %s\n", file);
}
else
{
snprintf(file, sizeof(file)-1, "%s%s", apath, ent->d_name);
Q_snprintfz(file, sizeof(file), "%s%s", apath, ent->d_name);
//printf("file = %s\n", file);
}

8
engine/server/sv_sys_win.c
View file

@ -239,7 +239,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
char file[MAX_OSPATH];
char *s;
int go;
strcpy(apath, match);
Q_strncpyz(apath, match, sizeof(apath));
// sprintf(apath, "%s%s", gpath, match);
for (s = apath+strlen(apath)-1; s>= apath; s--)
{
@ -251,7 +251,7 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
sprintf(file, "%s/%s", gpath, match);
Q_snprintfz(file, sizeof(file), "%s/%s", gpath, match);
r = FindFirstFile(file, &fd);
if (r==(HANDLE)-1)
return 1;
@ -262,13 +262,13 @@ int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void
{
if (*fd.cFileName != '.')
{
sprintf(file, "%s%s/", apath, fd.cFileName);
Q_snprintfz(file, sizeof(file), "%s%s/", apath, fd.cFileName);
go = func(file, fd.nFileSizeLow, parm);
}
}
else
{
sprintf(file, "%s%s", apath, fd.cFileName);
Q_snprintfz(file, sizeof(file), "%s%s", apath, fd.cFileName);
go = func(file, fd.nFileSizeLow, parm);
}
}