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-rw-r--r--lib/common/filename_sane.c47
1 files changed, 43 insertions, 4 deletions
diff --git a/lib/common/filename_sane.c b/lib/common/filename_sane.c
index 6b497c3..d089ba4 100644
--- a/lib/common/filename_sane.c
+++ b/lib/common/filename_sane.c
@@ -6,19 +6,58 @@
*/
#include "common.h"
+#include <string.h>
+
+#ifdef _MSC_VER
+#define strncasecmp _strnicmp
+#define strcasecmp _stricmp
+#endif
+
+static const char *bad_names[] = {
+ ".",
+ "..",
+#ifdef _WIN32
+ "CON", "PRN", "AUX", "NUL",
+ "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
+ "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
+#endif
+};
+
bool is_filename_sane(const char *name)
{
- if (name[0] == '.') {
- if (name[1] == '\0')
+ size_t i = 0;
+
+ for (i = 0; i < sizeof(bad_names) / sizeof(bad_names[0]); ++i) {
+#ifdef _WIN32
+ size_t len = strlen(bad_names[i]);
+
+ if (strncasecmp(name, bad_names[i], len) != 0)
+ continue;
+
+ if (name[len] == '\0')
return false;
- if (name[1] == '.' && name[2] == '\0')
+ if (name[len] == '.' && strchr(name + len + 1, '.') == NULL)
return false;
+#else
+ if (strcmp(name, bad_names[i]) == 0)
+ return false;
+#endif
}
while (*name != '\0') {
- if (*name == '/')
+ if (*name == '/' || *name == '\\')
+ return false;
+
+#ifdef _WIN32
+ if (*name == '<' || *name == '>' || *name == ':')
return false;
+ if (*name == '"' || *name == '|' || *name == '?')
+ return false;
+ if (*name == '*' || *name <= 31)
+ return false;
+#endif
+
++name;
}