X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=misc.h;h=ce927ec5cd1d0c1a5f001485731c6c52dbc84449;hb=1de7240eb88fa24a8532ded116b4ec72dd213008;hp=e53f89299cd70b15b4668dfcff4b29eed27496ef;hpb=c195ff2b4f0e7cae40232ae71fe3100027a29061;p=PuTTY.git

diff --git a/misc.h b/misc.h
index e53f8929..ce927ec5 100644
--- a/misc.h
+++ b/misc.h
@@ -51,17 +51,22 @@ wchar_t *dup_mb_to_wc(int codepage, int flags, const char *string);
 int toint(unsigned);
 
 char *fgetline(FILE *fp);
+char *chomp(char *str);
 int strstartswith(const char *s, const char *t);
 int strendswith(const char *s, const char *t);
 
-void base64_encode_atom(unsigned char *data, int n, char *out);
-int base64_decode_atom(char *atom, unsigned 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 {
+struct bufchain_tag {
     struct bufchain_granule *head, *tail;
     int buffersize;		       /* current amount of buffered data */
-} bufchain;
+};
+#ifndef BUFCHAIN_TYPEDEF
+typedef struct bufchain_tag bufchain;  /* rest of declaration in misc.c */
+#define BUFCHAIN_TYPEDEF
+#endif
 
 void bufchain_init(bufchain *ch);
 void bufchain_clear(bufchain *ch);
@@ -89,6 +94,23 @@ void smemclr(void *b, size_t len);
  * 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.
  *
@@ -103,8 +125,8 @@ int smemeq(const void *av, const void *bv, size_t len);
  */
 
 #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);
@@ -169,4 +191,9 @@ void debug_memdump(void *buf, int len, int L);
   (cp)[0] = (unsigned char)((value) >> 8), \
   (cp)[1] = (unsigned char)(value) )
 
+/* Replace NULL with the empty string, permitting an idiom in which we
+ * get a string (pointer,length) pair that might be NULL,0 and can
+ * then safely say things like printf("%.*s", length, NULLTOEMPTY(ptr)) */
+#define NULLTOEMPTY(s) ((s)?(s):"")
+
 #endif