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-rw-r--r--src/passphrase.c245
1 files changed, 222 insertions, 23 deletions
diff --git a/src/passphrase.c b/src/passphrase.c
index 8ff4c56..751a77b 100644
--- a/src/passphrase.c
+++ b/src/passphrase.c
@@ -27,7 +27,7 @@
#define START_PASSPHRASE_LIMIT 32
-#ifndef PASSPHRASE_ECHO
+#if !defined(PASSPHRASE_ECHO) || defined(PASSPHRASE_MOVE)
/**
* The original TTY settings
*/
@@ -36,28 +36,43 @@ static struct termios saved_stty;
#ifndef PASSPHRASE_REALLOC
-static inline char* xrealloc(char* array, size_t size)
+static inline char* xrealloc(char* array, size_t cur_size, size_t new_size)
{
- char* rc = malloc(size);
- int i;
+ char* rc = malloc(new_size * sizeof(char));
+ size_t i;
if (rc)
- for (i = 0; *(array + i); i++)
- {
+ for (i = 0; i < cur_size; i++)
*(rc + i) = *(array + i);
- *(array + i) = 0;
- }
- else
- for (i = 0; *(array + i); i++)
- *(array + i) = 0;
+ for (i = 0; i < cur_size; i++)
+ *(array + i) = 0;
free(array);
return rc;
}
#else
-#define xrealloc realloc
+#define xrealloc(array, _cur_size, new_size) realloc(array, (new_size) * sizeof(char))
#endif
-#define xprintf(...) ({ printf(__VA_ARGS__); fflush(stdout); })
+#if defined(PASSPHRASE_MOVE) && !defined(PASSPHRASE_STAR) && !defined(PASSPHRASE_ECHO)
+# define xprintf(...) /* do nothing */
+# define xflush() /* do nothing */
+#elif defined(PASSPHRASE_MOVE) || defined(PASSPHRASE_STAR)
+# define xprintf printf
+# define xflush() fflush(stdout)
+#else
+# define xflush() fflush(stdout)
+#endif
+
+
+#ifdef PASSPHRASE_MOVE
+# if defined(PASSPHRASE_STAR)
+# define xputchar(C) ({ if ((c & 0xC0) != 0x80) putchar('*'); })
+# elif defined(PASSPHRASE_ECHO)
+# define xputchar(C) putchar(C)
+# else
+# define xputchar(C) /* be silent */
+# endif
+#endif
/**
@@ -69,7 +84,18 @@ char* passphrase_read(void)
{
char* rc = malloc(START_PASSPHRASE_LIMIT * sizeof(char));
long size = START_PASSPHRASE_LIMIT;
- long len = 0;
+ long len = 0;
+#ifdef PASSPHRASE_MOVE
+ long point = 0;
+ long i = 0;
+# ifdef PASSPHRASE_OVERRIDE
+# if defined(PASSPHRASE_INSERT) && defined(DEFAULT_INSERT)
+ char insert = 1;
+# elif defined(PASSPHRASE_INSERT)
+ char insert = 0;
+# endif
+# endif
+#endif
int c;
if (rc == NULL)
@@ -85,28 +111,201 @@ char* passphrase_read(void)
break;
if (c != 0)
{
-#ifdef PASSPHRASE_STAR
+#if defined(PASSPHRASE_MOVE)
+ /* \e[1~ \eOH ^A -1 home */
+ /* \e[2~ -2 insert */
+ /* \e[3~ ^D -3 delete */
+ /* \e[4~ \eOF ^E -4 end */
+ /* \8 \127 -5 erase */
+ /* \e[C ^F -6 right */
+ /* \e[D ^B -7 left */
+ int cc = 0;
+#ifdef PASSPHRASE_DEDICATED
+ if (c == '\033')
+ {
+ c = getchar();
+ if (c == 'O')
+ {
+ c = getchar();
+ if (c == 'H') cc = -1;
+ else if (c == 'F') cc = -4;
+ }
+ else if (c == '[')
+ {
+ c = getchar();
+ if (c == 'C') cc = -6;
+ else if (c == 'D') cc = -7;
+ else if (('1' <= c) && (c <= '4') && (getchar() == '~'))
+ cc = -(c - '0');
+ }
+ }
+ else
+#endif
+ if ((c == 8) || (c == 127))
+ cc = -5;
+ else if ((c < 0) || (c >= ' '))
+ cc = ((int)c) & 255;
+#ifdef PASSPHRASE_CONTROL
+ else if (c == 'A' - '@') cc = -1;
+ else if (c == 'B' - '@') cc = -7;
+ else if (c == 'D' - '@') cc = -3;
+ else if (c == 'E' - '@') cc = -4;
+ else if (c == 'F' - '@') cc = -6;
+#endif
+
+ if (cc > 0)
+ {
+ c = (char)cc;
+ if (point == len)
+ {
+ xputchar(c);
+ *(rc + len++) = c;
+ }
+#ifdef PASSPHRASE_INSERT
+ else
+#ifdef PASSPHRASE_OVERRIDE
+ if (insert)
+#endif
+ {
+ if ((c & 0xC0) != 0x80)
+ xprintf("\033[@");
+ xputchar(c);
+ for (i = point; i < len; i++)
+ *(rc + i + 1) = *(rc + i);
+ len++;
+ *(rc + point++) = c;
+ }
+#endif
+#ifdef PASSPHRASE_OVERRIDE
+ else
+ {
+ long n = 1;
+ char cn = c;
+ while (*(rc + point + n))
+ n++;
+ for (i = point; i < len; i++)
+ *(rc + i) = *(rc + i + n);
+ for (i = len - n; i < len; i++)
+ *(rc + point + i) = 0;
+ len -= n;
+ n = 0;
+ while (cn & 0x80)
+ {
+ cn <<= 1;
+ n++;
+ }
+ n = n ?: 1;
+ if (len + n > size)
+ {
+ if ((rc = xrealloc(rc, size, size << 1L)) == NULL)
+ return NULL;
+ size <<= 1L;
+ }
+ for (i = point; i < len; i++)
+ *(rc + i + n) = *(rc + i);
+ len += n;
+ for (i = 0; i < n; i++)
+ {
+ if (i)
+ c = getchar();
+ xputchar(c);
+ *(rc + point++) = c;
+ }
+ }
+#endif
+ }
+ else if ((cc == -1) && point) /* home */
+ {
+ xprintf("\033[%liD", point);
+ point = 0;
+ }
+#if defined(PASSPHRASE_INSERT) && defined(PASSPHRASE_OVERRIDE)
+ else if (cc == -2) /* insert */
+ insert ^= 1;
+#endif
+#ifdef PASSPHRASE_DELETE
+ else if ((cc == -3) && (len != point)) /* delete */
+ {
+ xprintf("\033[P");
+#ifdef PASSPHRASE_INVALID
+ *(rc + len) = 0;
+#endif
+ do
+ {
+ for (i = point; i < len; i++)
+ *(rc + i) = *(rc + i + 1);
+ len--;
+ }
+ while ((len != point) && ((*(rc + point) & 0xC0) == 0x80));
+ }
+#endif
+ else if ((cc == -4) && (len != point)) /* end */
+ {
+ xprintf("\033[%liC", len - point);
+ point = len;
+ }
+ else if ((cc == -5) && point) /* erase */
+ {
+ char redo = 1;
+ xprintf("\033[D\033[P");
+#ifdef PASSPHRASE_INVALID
+ *(rc + len) = 0;
+#endif
+ while (redo)
+ {
+ redo = (*(rc + point) & 0xC0) == 0x80;
+ for (i = point; i <= len; i++)
+ *(rc + i - 1) = *(rc + i);
+ point--;
+ len--;
+ }
+ }
+ else if ((cc == -6) && (len != point)) /* right */
+ {
+ xprintf("\033[C");
+ do
+ point++;
+ while ((len != point) && ((*(rc + point) & 0xC0) == 0x80));
+ }
+ else if ((cc == -7) && point) /* left */
+ {
+ char redo = 1
+ xprintf("\033[D");
+ while (redo)
+ redo = (*(rc + point--) & 0xC0) == 0x80;
+ }
+
+#elif defined(PASSPHRASE_STAR)
if ((c == 8) || (c == 127))
{
if (len == 0)
continue;
xprintf("\033[D \033[D");
+ xflush();
*(rc + --len) = 0;
continue;
}
- putchar('*');
-#endif
+ if ((c & 0xC0) != 0x80)
+ putchar('*');
*(rc + len++) = c;
+#else
+ *(rc + len++) = c;
+#endif
+
+ xflush();
if (len == size)
- if ((rc = xrealloc(rc, (size <<= 1L) * sizeof(char))) == NULL)
- return rc;
+ {
+ if ((rc = xrealloc(rc, size, size << 1L)) == NULL)
+ return NULL;
+ size <<= 1L;
+ }
}
}
/* NUL-terminate passphrase */
*(rc + len) = 0;
-#ifndef PASSPHRASE_ECHO
+#if !defined(PASSPHRASE_ECHO) || defined(PASSPHRASE_MOVE)
printf("\n");
#endif
return rc;
@@ -118,13 +317,13 @@ char* passphrase_read(void)
*/
void passphrase_disable_echo(void)
{
-#ifndef PASSPHRASE_ECHO
+#if !defined(PASSPHRASE_ECHO) || defined(PASSPHRASE_MOVE)
struct termios stty;
tcgetattr(STDIN_FILENO, &stty);
saved_stty = stty;
stty.c_lflag &= ~ECHO;
-#ifdef PASSPHRASE_STAR
+#if defined(PASSPHRASE_STAR) || defined(PASSPHRASE_MOVE)
stty.c_lflag &= ~ICANON;
#endif
tcsetattr(STDIN_FILENO, TCSAFLUSH, &stty);
@@ -137,7 +336,7 @@ void passphrase_disable_echo(void)
*/
void passphrase_reenable_echo(void)
{
-#ifndef PASSPHRASE_ECHO
+#if !defined(PASSPHRASE_ECHO) || defined(PASSPHRASE_MOVE)
tcsetattr(STDIN_FILENO, TCSAFLUSH, &saved_stty);
#endif
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-20 01:36:42 +0000