unsigned long parse_blocksize(const char *bs);
char ctrlparse(char *s, char **next);
+size_t host_strcspn(const char *s, const char *set);
+char *host_strchr(const char *s, int c);
+char *host_strrchr(const char *s, int c);
+char *host_strduptrim(const char *s);
+
char *dupstr(const char *s);
char *dupcat(const char *s1, ...);
-char *dupprintf(const char *fmt, ...);
+char *dupprintf(const char *fmt, ...)
+#ifdef __GNUC__
+ __attribute__ ((format (printf, 1, 2)))
+#endif
+ ;
char *dupvprintf(const char *fmt, va_list ap);
void burnstr(char *string);
+/* String-to-Unicode converters that auto-allocate the destination and
+ * work around the rather deficient interface of mb_to_wc.
+ *
+ * These actually live in miscucs.c, not misc.c (the distinction being
+ * that the former is only linked into tools that also have the main
+ * Unicode support). */
+wchar_t *dup_mb_to_wc_c(int codepage, int flags, const char *string, int len);
+wchar_t *dup_mb_to_wc(int codepage, int flags, const char *string);
+
+int toint(unsigned);
+
char *fgetline(FILE *fp);
void base64_encode_atom(unsigned char *data, int n, char *out);
+int base64_decode_atom(char *atom, unsigned char *out);
struct bufchain_granule;
typedef struct bufchain_tag {
void bufchain_consume(bufchain *ch, int len);
void bufchain_fetch(bufchain *ch, void *data, int len);
+int validate_manual_hostkey(char *key);
+
struct tm ltime(void);
+/* Wipe sensitive data out of memory that's about to be freed. Simpler
+ * than memset because we don't need the fill char parameter; also
+ * attempts (by fiddly use of volatile) to inhibit the compiler from
+ * over-cleverly trying to optimise the memset away because it knows
+ * the variable is going out of scope. */
void smemclr(void *b, size_t len);
+/* Compare two fixed-length chunks of memory for equality, without
+ * data-dependent control flow (so an attacker with a very accurate
+ * stopwatch can't try to guess where the first mismatching byte was).
+ * Returns 0 for mismatch or 1 for equality (unlike memcmp), hinted at
+ * by the 'eq' in the name. */
+int smemeq(const void *av, const void *bv, size_t len);
+
/*
* Debugging functions.
*