+/*
+ * Codes for terminal modes.
+ * Most of these are the same in SSH-1 and SSH-2.
+ * This list is derived from draft-ietf-secsh-connect-25 and
+ * SSH-1 RFC-1.2.31.
+ */
+static const struct {
+ const char* const mode;
+ int opcode;
+ enum { TTY_OP_CHAR, TTY_OP_BOOL } type;
+} ssh_ttymodes[] = {
+ /* "V" prefix discarded for special characters relative to SSH specs */
+ { "INTR", 1, TTY_OP_CHAR },
+ { "QUIT", 2, TTY_OP_CHAR },
+ { "ERASE", 3, TTY_OP_CHAR },
+ { "KILL", 4, TTY_OP_CHAR },
+ { "EOF", 5, TTY_OP_CHAR },
+ { "EOL", 6, TTY_OP_CHAR },
+ { "EOL2", 7, TTY_OP_CHAR },
+ { "START", 8, TTY_OP_CHAR },
+ { "STOP", 9, TTY_OP_CHAR },
+ { "SUSP", 10, TTY_OP_CHAR },
+ { "DSUSP", 11, TTY_OP_CHAR },
+ { "REPRINT", 12, TTY_OP_CHAR },
+ { "WERASE", 13, TTY_OP_CHAR },
+ { "LNEXT", 14, TTY_OP_CHAR },
+ { "FLUSH", 15, TTY_OP_CHAR },
+ { "SWTCH", 16, TTY_OP_CHAR },
+ { "STATUS", 17, TTY_OP_CHAR },
+ { "DISCARD", 18, TTY_OP_CHAR },
+ { "IGNPAR", 30, TTY_OP_BOOL },
+ { "PARMRK", 31, TTY_OP_BOOL },
+ { "INPCK", 32, TTY_OP_BOOL },
+ { "ISTRIP", 33, TTY_OP_BOOL },
+ { "INLCR", 34, TTY_OP_BOOL },
+ { "IGNCR", 35, TTY_OP_BOOL },
+ { "ICRNL", 36, TTY_OP_BOOL },
+ { "IUCLC", 37, TTY_OP_BOOL },
+ { "IXON", 38, TTY_OP_BOOL },
+ { "IXANY", 39, TTY_OP_BOOL },
+ { "IXOFF", 40, TTY_OP_BOOL },
+ { "IMAXBEL", 41, TTY_OP_BOOL },
+ { "ISIG", 50, TTY_OP_BOOL },
+ { "ICANON", 51, TTY_OP_BOOL },
+ { "XCASE", 52, TTY_OP_BOOL },
+ { "ECHO", 53, TTY_OP_BOOL },
+ { "ECHOE", 54, TTY_OP_BOOL },
+ { "ECHOK", 55, TTY_OP_BOOL },
+ { "ECHONL", 56, TTY_OP_BOOL },
+ { "NOFLSH", 57, TTY_OP_BOOL },
+ { "TOSTOP", 58, TTY_OP_BOOL },
+ { "IEXTEN", 59, TTY_OP_BOOL },
+ { "ECHOCTL", 60, TTY_OP_BOOL },
+ { "ECHOKE", 61, TTY_OP_BOOL },
+ { "PENDIN", 62, TTY_OP_BOOL }, /* XXX is this a real mode? */
+ { "OPOST", 70, TTY_OP_BOOL },
+ { "OLCUC", 71, TTY_OP_BOOL },
+ { "ONLCR", 72, TTY_OP_BOOL },
+ { "OCRNL", 73, TTY_OP_BOOL },
+ { "ONOCR", 74, TTY_OP_BOOL },
+ { "ONLRET", 75, TTY_OP_BOOL },
+ { "CS7", 90, TTY_OP_BOOL },
+ { "CS8", 91, TTY_OP_BOOL },
+ { "PARENB", 92, TTY_OP_BOOL },
+ { "PARODD", 93, TTY_OP_BOOL }
+};
+
+/* Miscellaneous other tty-related constants. */
+#define SSH_TTY_OP_END 0
+/* The opcodes for ISPEED/OSPEED differ between SSH-1 and SSH-2. */
+#define SSH1_TTY_OP_ISPEED 192
+#define SSH1_TTY_OP_OSPEED 193
+#define SSH2_TTY_OP_ISPEED 128
+#define SSH2_TTY_OP_OSPEED 129
+
+/* Helper functions for parsing tty-related config. */
+static unsigned int ssh_tty_parse_specchar(char *s)
+{
+ unsigned int ret;
+ if (*s) {
+ char *next = NULL;
+ ret = ctrlparse(s, &next);
+ if (!next) ret = s[0];
+ } else {
+ ret = 255; /* special value meaning "don't set" */
+ }
+ return ret;
+}
+static unsigned int ssh_tty_parse_boolean(char *s)
+{
+ if (stricmp(s, "yes") == 0 ||
+ stricmp(s, "on") == 0 ||
+ stricmp(s, "true") == 0 ||
+ stricmp(s, "+") == 0)
+ return 1; /* true */
+ else if (stricmp(s, "no") == 0 ||
+ stricmp(s, "off") == 0 ||
+ stricmp(s, "false") == 0 ||
+ stricmp(s, "-") == 0)
+ return 0; /* false */
+ else
+ return (atoi(s) != 0);
+}
+