#include "putty.h"
#include "terminal.h"
+#include "ldisc.h"
-#define ECHOING (cfg.localecho == LD_YES || \
- (cfg.localecho == LD_BACKEND && \
- (back->ldisc(LD_ECHO) || term_ldisc(term, LD_ECHO))))
-#define EDITING (cfg.localedit == LD_YES || \
- (cfg.localedit == LD_BACKEND && \
- (back->ldisc(LD_EDIT) || term_ldisc(term, LD_EDIT))))
+#define ECHOING (ldisc->localecho == FORCE_ON || \
+ (ldisc->localecho == AUTO && \
+ (ldisc->back->ldisc(ldisc->backhandle, LD_ECHO) || \
+ term_ldisc(ldisc->term, LD_ECHO))))
+#define EDITING (ldisc->localedit == FORCE_ON || \
+ (ldisc->localedit == AUTO && \
+ (ldisc->back->ldisc(ldisc->backhandle, LD_EDIT) || \
+ term_ldisc(ldisc->term, LD_EDIT))))
-static void c_write(char *buf, int len)
+static void c_write(Ldisc ldisc, char *buf, int len)
{
- from_backend(term, 0, buf, len);
+ from_backend(ldisc->frontend, 0, buf, len);
}
-static char *term_buf = NULL;
-static int term_buflen = 0, term_bufsiz = 0, term_quotenext = 0;
-
-static int plen(unsigned char c)
+static int plen(Ldisc ldisc, unsigned char c)
{
- if ((c >= 32 && c <= 126) || (c >= 160 && !in_utf(term)))
+ if ((c >= 32 && c <= 126) || (c >= 160 && !in_utf(ldisc->term)))
return 1;
else if (c < 128)
return 2; /* ^x for some x */
+ else if (in_utf(ldisc->term) && c >= 0xC0)
+ return 1; /* UTF-8 introducer character
+ * (FIXME: combining / wide chars) */
+ else if (in_utf(ldisc->term) && c >= 0x80 && c < 0xC0)
+ return 0; /* UTF-8 followup character */
else
- return 4; /* <XY> for hex XY */
+ return 4; /* <XY> hex representation */
}
-static void pwrite(unsigned char c)
+static void pwrite(Ldisc ldisc, unsigned char c)
{
- if ((c >= 32 && c <= 126) || (c >= 160 && !in_utf(term))) {
- c_write(&c, 1);
+ if ((c >= 32 && c <= 126) ||
+ (!in_utf(ldisc->term) && c >= 0xA0) ||
+ (in_utf(ldisc->term) && c >= 0x80)) {
+ c_write(ldisc, (char *)&c, 1);
} else if (c < 128) {
char cc[2];
cc[1] = (c == 127 ? '?' : c + 0x40);
cc[0] = '^';
- c_write(cc, 2);
+ c_write(ldisc, cc, 2);
} else {
char cc[5];
sprintf(cc, "<%02X>", c);
- c_write(cc, 4);
+ c_write(ldisc, cc, 4);
}
}
-static void bsb(int n)
+static int char_start(Ldisc ldisc, unsigned char c)
+{
+ if (in_utf(ldisc->term))
+ return (c < 0x80 || c >= 0xC0);
+ else
+ return 1;
+}
+
+static void bsb(Ldisc ldisc, int n)
{
while (n--)
- c_write("\010 \010", 3);
+ c_write(ldisc, "\010 \010", 3);
}
#define CTRL(x) (x^'@')
#define KCTRL(x) ((x^'@') | 0x100)
-void ldisc_send(char *buf, int len, int interactive)
+void *ldisc_create(Conf *conf, Terminal *term,
+ Backend *back, void *backhandle,
+ void *frontend)
+{
+ Ldisc ldisc = snew(struct ldisc_tag);
+
+ ldisc->buf = NULL;
+ ldisc->buflen = 0;
+ ldisc->bufsiz = 0;
+ ldisc->quotenext = 0;
+
+ ldisc->back = back;
+ ldisc->backhandle = backhandle;
+ ldisc->term = term;
+ ldisc->frontend = frontend;
+
+ ldisc_configure(ldisc, conf);
+
+ /* Link ourselves into the backend and the terminal */
+ if (term)
+ term->ldisc = ldisc;
+ if (back)
+ back->provide_ldisc(backhandle, ldisc);
+
+ return ldisc;
+}
+
+void ldisc_configure(void *handle, Conf *conf)
+{
+ Ldisc ldisc = (Ldisc) handle;
+
+ ldisc->telnet_keyboard = conf_get_int(conf, CONF_telnet_keyboard);
+ ldisc->telnet_newline = conf_get_int(conf, CONF_telnet_newline);
+ ldisc->protocol = conf_get_int(conf, CONF_protocol);
+ ldisc->localecho = conf_get_int(conf, CONF_localecho);
+ ldisc->localedit = conf_get_int(conf, CONF_localedit);
+}
+
+void ldisc_free(void *handle)
{
+ Ldisc ldisc = (Ldisc) handle;
+
+ if (ldisc->term)
+ ldisc->term->ldisc = NULL;
+ if (ldisc->back)
+ ldisc->back->provide_ldisc(ldisc->backhandle, NULL);
+ if (ldisc->buf)
+ sfree(ldisc->buf);
+ sfree(ldisc);
+}
+
+void ldisc_send(void *handle, char *buf, int len, int interactive)
+{
+ Ldisc ldisc = (Ldisc) handle;
int keyflag = 0;
/*
* Called with len=0 when the options change. We must inform
* the front end in case it needs to know.
*/
if (len == 0) {
- void ldisc_update(int echo, int edit);
- ldisc_update(ECHOING, EDITING);
+ ldisc_update(ldisc->frontend, ECHOING, EDITING);
return;
}
/*
* it's depending on finding out (e.g. keypress termination for
* Close On Exit).
*/
- frontend_keypress();
+ frontend_keypress(ldisc->frontend);
+
/*
* Less than zero means null terminated special string.
*/
if (EDITING) {
while (len--) {
int c;
- c = *buf++ + keyflag;
+ c = (unsigned char)(*buf++) + keyflag;
if (!interactive && c == '\r')
c += KCTRL('@');
- switch (term_quotenext ? ' ' : c) {
+ switch (ldisc->quotenext ? ' ' : c) {
/*
- * ^h/^?: delete one char and output one BSB
+ * ^h/^?: delete, and output BSBs, to return to
+ * last character boundary (in UTF-8 mode this may
+ * be more than one byte)
* ^w: delete, and output BSBs, to return to last
* space/nonspace boundary
* ^u: delete, and output BSBs, to return to BOL
*/
case KCTRL('H'):
case KCTRL('?'): /* backspace/delete */
- if (term_buflen > 0) {
- if (ECHOING)
- bsb(plen(term_buf[term_buflen - 1]));
- term_buflen--;
+ if (ldisc->buflen > 0) {
+ do {
+ if (ECHOING)
+ bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1]));
+ ldisc->buflen--;
+ } while (!char_start(ldisc, ldisc->buf[ldisc->buflen]));
}
break;
case CTRL('W'): /* delete word */
- while (term_buflen > 0) {
+ while (ldisc->buflen > 0) {
if (ECHOING)
- bsb(plen(term_buf[term_buflen - 1]));
- term_buflen--;
- if (term_buflen > 0 &&
- isspace(term_buf[term_buflen - 1]) &&
- !isspace(term_buf[term_buflen]))
+ bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1]));
+ ldisc->buflen--;
+ if (ldisc->buflen > 0 &&
+ isspace((unsigned char)ldisc->buf[ldisc->buflen-1]) &&
+ !isspace((unsigned char)ldisc->buf[ldisc->buflen]))
break;
}
break;
case CTRL('C'): /* Send IP */
case CTRL('\\'): /* Quit */
case CTRL('Z'): /* Suspend */
- while (term_buflen > 0) {
+ while (ldisc->buflen > 0) {
if (ECHOING)
- bsb(plen(term_buf[term_buflen - 1]));
- term_buflen--;
+ bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1]));
+ ldisc->buflen--;
}
- back->special(TS_EL);
+ ldisc->back->special(ldisc->backhandle, TS_EL);
/*
* We don't send IP, SUSP or ABORT if the user has
* configured telnet specials off! This breaks
* talkers otherwise.
*/
- if (!cfg.telnet_keyboard)
+ if (!ldisc->telnet_keyboard)
goto default_case;
if (c == CTRL('C'))
- back->special(TS_IP);
+ ldisc->back->special(ldisc->backhandle, TS_IP);
if (c == CTRL('Z'))
- back->special(TS_SUSP);
+ ldisc->back->special(ldisc->backhandle, TS_SUSP);
if (c == CTRL('\\'))
- back->special(TS_ABORT);
+ ldisc->back->special(ldisc->backhandle, TS_ABORT);
break;
case CTRL('R'): /* redraw line */
if (ECHOING) {
int i;
- c_write("^R\r\n", 4);
- for (i = 0; i < term_buflen; i++)
- pwrite(term_buf[i]);
+ c_write(ldisc, "^R\r\n", 4);
+ for (i = 0; i < ldisc->buflen; i++)
+ pwrite(ldisc, ldisc->buf[i]);
}
break;
case CTRL('V'): /* quote next char */
- term_quotenext = TRUE;
+ ldisc->quotenext = TRUE;
break;
case CTRL('D'): /* logout or send */
- if (term_buflen == 0) {
- back->special(TS_EOF);
+ if (ldisc->buflen == 0) {
+ ldisc->back->special(ldisc->backhandle, TS_EOF);
} else {
- back->send(term_buf, term_buflen);
- term_buflen = 0;
+ ldisc->back->send(ldisc->backhandle, ldisc->buf, ldisc->buflen);
+ ldisc->buflen = 0;
}
break;
/*
* default clause because of the break.
*/
case CTRL('J'):
- if (cfg.protocol == PROT_RAW &&
- term_buflen > 0 && term_buf[term_buflen - 1] == '\r') {
+ if (ldisc->protocol == PROT_RAW &&
+ ldisc->buflen > 0 && ldisc->buf[ldisc->buflen - 1] == '\r') {
if (ECHOING)
- bsb(plen(term_buf[term_buflen - 1]));
- term_buflen--;
+ bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1]));
+ ldisc->buflen--;
/* FALLTHROUGH */
case KCTRL('M'): /* send with newline */
- if (term_buflen > 0)
- back->send(term_buf, term_buflen);
- if (cfg.protocol == PROT_RAW)
- back->send("\r\n", 2);
- else if (cfg.protocol == PROT_TELNET && cfg.telnet_newline)
- back->special(TS_EOL);
+ if (ldisc->buflen > 0)
+ ldisc->back->send(ldisc->backhandle, ldisc->buf, ldisc->buflen);
+ if (ldisc->protocol == PROT_RAW)
+ ldisc->back->send(ldisc->backhandle, "\r\n", 2);
+ else if (ldisc->protocol == PROT_TELNET && ldisc->telnet_newline)
+ ldisc->back->special(ldisc->backhandle, TS_EOL);
else
- back->send("\r", 1);
+ ldisc->back->send(ldisc->backhandle, "\r", 1);
if (ECHOING)
- c_write("\r\n", 2);
- term_buflen = 0;
+ c_write(ldisc, "\r\n", 2);
+ ldisc->buflen = 0;
break;
}
/* FALLTHROUGH */
default: /* get to this label from ^V handler */
default_case:
- if (term_buflen >= term_bufsiz) {
- term_bufsiz = term_buflen + 256;
- term_buf = saferealloc(term_buf, term_bufsiz);
+ if (ldisc->buflen >= ldisc->bufsiz) {
+ ldisc->bufsiz = ldisc->buflen + 256;
+ ldisc->buf = sresize(ldisc->buf, ldisc->bufsiz, char);
}
- term_buf[term_buflen++] = c;
+ ldisc->buf[ldisc->buflen++] = c;
if (ECHOING)
- pwrite((unsigned char) c);
- term_quotenext = FALSE;
+ pwrite(ldisc, (unsigned char) c);
+ ldisc->quotenext = FALSE;
break;
}
}
} else {
- if (term_buflen != 0) {
- back->send(term_buf, term_buflen);
- while (term_buflen > 0) {
- bsb(plen(term_buf[term_buflen - 1]));
- term_buflen--;
+ if (ldisc->buflen != 0) {
+ ldisc->back->send(ldisc->backhandle, ldisc->buf, ldisc->buflen);
+ while (ldisc->buflen > 0) {
+ bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1]));
+ ldisc->buflen--;
}
}
if (len > 0) {
if (ECHOING)
- c_write(buf, len);
- if (keyflag && cfg.protocol == PROT_TELNET && len == 1) {
+ c_write(ldisc, buf, len);
+ if (keyflag && ldisc->protocol == PROT_TELNET && len == 1) {
switch (buf[0]) {
case CTRL('M'):
- if (cfg.protocol == PROT_TELNET && cfg.telnet_newline)
- back->special(TS_EOL);
+ if (ldisc->protocol == PROT_TELNET && ldisc->telnet_newline)
+ ldisc->back->special(ldisc->backhandle, TS_EOL);
else
- back->send("\r", 1);
+ ldisc->back->send(ldisc->backhandle, "\r", 1);
break;
case CTRL('?'):
case CTRL('H'):
- if (cfg.telnet_keyboard) {
- back->special(TS_EC);
+ if (ldisc->telnet_keyboard) {
+ ldisc->back->special(ldisc->backhandle, TS_EC);
break;
}
case CTRL('C'):
- if (cfg.telnet_keyboard) {
- back->special(TS_IP);
+ if (ldisc->telnet_keyboard) {
+ ldisc->back->special(ldisc->backhandle, TS_IP);
break;
}
case CTRL('Z'):
- if (cfg.telnet_keyboard) {
- back->special(TS_SUSP);
+ if (ldisc->telnet_keyboard) {
+ ldisc->back->special(ldisc->backhandle, TS_SUSP);
break;
}
default:
- back->send(buf, len);
+ ldisc->back->send(ldisc->backhandle, buf, len);
break;
}
} else
- back->send(buf, len);
+ ldisc->back->send(ldisc->backhandle, buf, len);
}
}
}
projects / u / mdw / putty / blobdiff