diff options
Diffstat (limited to 'compat/mingw.c')
-rw-r--r-- | compat/mingw.c | 76 |
1 files changed, 72 insertions, 4 deletions
diff --git a/compat/mingw.c b/compat/mingw.c index 8141f77189..0e14cab012 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -390,6 +390,12 @@ int mingw_mkdir(const char *path, int mode) { int ret; wchar_t wpath[MAX_PATH]; + + if (!is_valid_win32_path(path)) { + errno = EINVAL; + return -1; + } + if (xutftowcs_path(wpath, path) < 0) return -1; ret = _wmkdir(wpath); @@ -463,7 +469,7 @@ int mingw_open (const char *filename, int oflags, ...) typedef int (*open_fn_t)(wchar_t const *wfilename, int oflags, ...); va_list args; unsigned mode; - int fd; + int fd, create = (oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL); wchar_t wfilename[MAX_PATH]; open_fn_t open_fn; @@ -471,6 +477,11 @@ int mingw_open (const char *filename, int oflags, ...) mode = va_arg(args, int); va_end(args); + if (!is_valid_win32_path(filename)) { + errno = create ? EINVAL : ENOENT; + return -1; + } + if (filename && !strcmp(filename, "/dev/null")) filename = "nul"; @@ -537,6 +548,11 @@ FILE *mingw_fopen (const char *filename, const char *otype) int hide = needs_hiding(filename); FILE *file; wchar_t wfilename[MAX_PATH], wotype[4]; + if (!is_valid_win32_path(filename)) { + int create = otype && strchr(otype, 'w'); + errno = create ? EINVAL : ENOENT; + return NULL; + } if (filename && !strcmp(filename, "/dev/null")) filename = "nul"; if (xutftowcs_path(wfilename, filename) < 0 || @@ -559,6 +575,11 @@ FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream) int hide = needs_hiding(filename); FILE *file; wchar_t wfilename[MAX_PATH], wotype[4]; + if (!is_valid_win32_path(filename)) { + int create = otype && strchr(otype, 'w'); + errno = create ? EINVAL : ENOENT; + return NULL; + } if (filename && !strcmp(filename, "/dev/null")) filename = "nul"; if (xutftowcs_path(wfilename, filename) < 0 || @@ -1052,7 +1073,7 @@ static const char *quote_arg_msvc(const char *arg) p++; len++; } - if (*p == '"') + if (*p == '"' || !*p) n += count*2 + 1; continue; } @@ -1074,16 +1095,19 @@ static const char *quote_arg_msvc(const char *arg) count++; *d++ = *arg++; } - if (*arg == '"') { + if (*arg == '"' || !*arg) { while (count-- > 0) *d++ = '\\'; + /* don't escape the surrounding end quote */ + if (!*arg) + break; *d++ = '\\'; } } *d++ = *arg++; } *d++ = '"'; - *d++ = 0; + *d++ = '\0'; return q; } @@ -2464,6 +2488,50 @@ static void setup_windows_environment(void) setenv("TERM", "cygwin", 1); } +int is_valid_win32_path(const char *path) +{ + int preceding_space_or_period = 0, i = 0, periods = 0; + + if (!protect_ntfs) + return 1; + + skip_dos_drive_prefix((char **)&path); + + for (;;) { + char c = *(path++); + switch (c) { + case '\0': + case '/': case '\\': + /* cannot end in ` ` or `.`, except for `.` and `..` */ + if (preceding_space_or_period && + (i != periods || periods > 2)) + return 0; + if (!c) + return 1; + + i = periods = preceding_space_or_period = 0; + continue; + case '.': + periods++; + /* fallthru */ + case ' ': + preceding_space_or_period = 1; + i++; + continue; + case ':': /* DOS drive prefix was already skipped */ + case '<': case '>': case '"': case '|': case '?': case '*': + /* illegal character */ + return 0; + default: + if (c > '\0' && c < '\x20') + /* illegal character */ + return 0; + } + preceding_space_or_period = 0; + i++; + } +} + /* * Disable MSVCRT command line wildcard expansion (__getmainargs called from * mingw startup code, see init.c in mingw runtime). |