X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=misc.h;h=8c8377f9e823007a4118af6848571baf4675678d;hb=222c134b5f4f5397f2a15d36813286edeb3cff5e;hp=9675e96188798448c593a96abca70ad0fc7d26aa;hpb=ff5a9c77fd3631f5d756d175dafb065c93811377;p=PuTTY.git

diff --git a/misc.h b/misc.h
index 9675e961..8c8377f9 100644
--- a/misc.h
+++ b/misc.h
@@ -24,15 +24,37 @@ typedef struct FontSpec FontSpec;
 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);
+char *chomp(char *str);
 
-void base64_encode_atom(unsigned char *data, int n, char *out);
+void base64_encode_atom(const unsigned char *data, int n, char *out);
+int base64_decode_atom(const char *atom, unsigned char *out);
 
 struct bufchain_granule;
 typedef struct bufchain_tag {
@@ -48,8 +70,41 @@ void bufchain_prefix(bufchain *ch, void **data, int *len);
 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);
+
+/* Extracts an SSH-marshalled string from the start of *data. If
+ * successful (*datalen is not too small), advances data/datalen past
+ * the string and returns a pointer to the string itself and its
+ * length in *stringlen. Otherwise does nothing and returns NULL.
+ *
+ * Like strchr, this function can discard const from its parameter.
+ * Treat it as if it was a family of two functions, one returning a
+ * non-const string given a non-const pointer, and one taking and
+ * returning const. */
+void *get_ssh_string(int *datalen, const void **data, int *stringlen);
+/* Extracts an SSH uint32, similarly. Returns TRUE on success, and
+ * leaves the extracted value in *ret. */
+int get_ssh_uint32(int *datalen, const void **data, unsigned *ret);
+/* Given a not-necessarily-zero-terminated string in (length,data)
+ * form, check if it equals an ordinary C zero-terminated string. */
+int match_ssh_id(int stringlen, const void *string, const char *id);
+
 /*
  * Debugging functions.
  *
@@ -64,8 +119,8 @@ struct tm ltime(void);
  */
 
 #ifdef DEBUG
-void debug_printf(char *fmt, ...);
-void debug_memdump(void *buf, int len, int L);
+void debug_printf(const char *fmt, ...);
+void debug_memdump(const void *buf, int len, int L);
 #define debug(x) (debug_printf x)
 #define dmemdump(buf,len) debug_memdump (buf, len, 0);
 #define dmemdumpl(buf,len) debug_memdump (buf, len, 1);