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Fix several problems with simple_prompt() --- the nastiest being that

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the entered password would get echoed on some platforms, eg HPUX.
We have enough copies of this code that I'm thinking it ought to be
moved into libpq, but that's a task for another day.
This commit is contained in:
Tom Lane
2001-10-18 21:57:11 +00:00
parent f5a5b44c4d
commit 4fec55af6c
3 changed files with 138 additions and 86 deletions
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81
contrib/dbase/dbf2pg.c
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@ -57,7 +57,7 @@ char *convert_charset(char *string);
void usage(void);
unsigned int isinteger(char *);
char *simple_prompt(const char *prompt, int maxlen, int echo);
char *simple_prompt(const char *prompt, int maxlen, bool echo);
unsigned int isinteger(char *buff) {
@ -472,13 +472,12 @@ void do_inserts(PGconn *conn, char *table, dbhead *dbh) {
free(query);
}
/*
* This is from Postgres 7.0.3 source tarball, utility program PSQL.
*
* simple_prompt
* simple_prompt --- borrowed from psql
*
* Generalized function especially intended for reading in usernames and
* password interactively. Reads from stdin.
* password interactively. Reads from /dev/tty or stdin/stderr.
*
* prompt: The prompt to print
* maxlen: How many characters to accept
@ -486,66 +485,96 @@ void do_inserts(PGconn *conn, char *table, dbhead *dbh) {
*
* Returns a malloc()'ed string with the input (w/o trailing newline).
*/
static int prompt_state;
static bool prompt_state = false;
char *
simple_prompt(const char *prompt, int maxlen, int echo)
simple_prompt(const char *prompt, int maxlen, bool echo)
{
int length;
char *destination;
FILE *termin, *termout;
#ifdef HAVE_TERMIOS_H
struct termios t_orig,
t;
#endif
destination = (char *) malloc(maxlen + 2);
if (!destination)
return NULL;
if (prompt)
fputs(prompt, stderr);
prompt_state = 1;
prompt_state = true; /* disable SIGINT */
/*
* Do not try to collapse these into one "w+" mode file.
* Doesn't work on some platforms (eg, HPUX 10.20).
*/
termin = fopen("/dev/tty", "r");
termout = fopen("/dev/tty", "w");
if (!termin || !termout)
{
if (termin)
fclose(termin);
if (termout)
fclose(termout);
termin = stdin;
termout = stderr;
}
#ifdef HAVE_TERMIOS_H
if (!echo)
{
tcgetattr(0, &t);
tcgetattr(fileno(termin), &t);
t_orig = t;
t.c_lflag &= ~ECHO;
tcsetattr(0, TCSADRAIN, &t);
tcsetattr(fileno(termin), TCSAFLUSH, &t);
}
#endif
fgets(destination, maxlen, stdin);
#ifdef HAVE_TERMIOS_H
if (!echo)
if (prompt)
{
tcsetattr(0, TCSADRAIN, &t_orig);
puts("");
fputs(gettext(prompt), termout);
fflush(termout);
}
#endif
prompt_state = 0;
if (fgets(destination, maxlen, termin) == NULL)
destination[0] = '\0';
length = strlen(destination);
if (length > 0 && destination[length - 1] != '\n')
{
/* eat rest of the line */
char buf[512];
char buf[128];
int buflen;
do
{
fgets(buf, 512, stdin);
} while (buf[strlen(buf) - 1] != '\n');
if (fgets(buf, sizeof(buf), termin) == NULL)
break;
buflen = strlen(buf);
} while (buflen > 0 && buf[buflen - 1] != '\n');
}
if (length > 0 && destination[length - 1] == '\n')
/* remove trailing newline */
destination[length - 1] = '\0';
#ifdef HAVE_TERMIOS_H
if (!echo)
{
tcsetattr(fileno(termin), TCSAFLUSH, &t_orig);
fputs("\n", termout);
fflush(termout);
}
#endif
if (termin != stdin)
{
fclose(termin);
fclose(termout);
}
prompt_state = false; /* SIGINT okay again */
return destination;
}