diff options
| -rw-r--r-- | shell/hush.c | 85 |
1 files changed, 46 insertions, 39 deletions
diff --git a/shell/hush.c b/shell/hush.c index 41d65ff..d6f765d 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -663,23 +663,25 @@ static void xxfree(void *ptr) * HUSH_DEBUG >= 2 prints line number in this file where it was detected. */ #if HUSH_DEBUG < 2 -# define die_if_script(lineno, fmt, msg) die_if_script(fmt, msg) -# define syntax_error(lineno, msg) syntax_error(msg) -# define syntax_error_at(lineno, msg) syntax_error_at(msg) -# define syntax_error_unterminated(lineno, ch) syntax_error_unterminated(ch) +# define die_if_script(lineno, fmt...) die_if_script(fmt) +# define syntax_error(lineno, msg) syntax_error(msg) +# define syntax_error_at(lineno, msg) syntax_error_at(msg) +# define syntax_error_unterm_ch(lineno, ch) syntax_error_unterm_ch(ch) +# define syntax_error_unterm_str(lineno, s) syntax_error_unterm_str(s) #endif -static void die_if_script(unsigned lineno, const char *fmt, const char *msg) +static void die_if_script(unsigned lineno, const char *fmt, ...) { - void FAST_FUNC (*fp)(const char *s, ...) = bb_error_msg_and_die; -#if ENABLE_HUSH_INTERACTIVE - if (G_interactive_fd) - fp = bb_error_msg; -#endif + va_list p; + #if HUSH_DEBUG >= 2 bb_error_msg("hush.c:%u", lineno); #endif - fp(fmt, msg); + va_start(p, fmt); + bb_verror_msg(fmt, p, NULL); + va_end(p); + if (!G_interactive_fd) + xfunc_die(); } static void syntax_error(unsigned lineno, const char *msg) @@ -695,7 +697,7 @@ static void syntax_error_at(unsigned lineno, const char *msg) die_if_script(lineno, "syntax error at '%s'", msg); } -static void syntax_error_unterminated(unsigned lineno, char ch) +static void syntax_error_unterm_ch(unsigned lineno, char ch) { char msg[2]; msg[0] = ch; @@ -703,16 +705,23 @@ static void syntax_error_unterminated(unsigned lineno, char ch) die_if_script(lineno, "syntax error: unterminated %s", msg); } +static void syntax_error_unterm_str(unsigned lineno, const char *s) +{ + die_if_script(lineno, "syntax error: unterminated %s", s); +} + #if HUSH_DEBUG < 2 # undef die_if_script # undef syntax_error # undef syntax_error_at -# undef syntax_error_unterminated +# undef syntax_error_unterm_ch +# undef syntax_error_unterm_str #else -# define die_if_script(fmt, msg) die_if_script(__LINE__, fmt, msg) -# define syntax_error(msg) syntax_error(__LINE__, msg) -# define syntax_error_at(msg) syntax_error_at(__LINE__, msg) -# define syntax_error_unterminated(ch) syntax_error_unterminated(__LINE__, ch) +# define die_if_script(fmt...) die_if_script(__LINE__, fmt) +# define syntax_error(msg) syntax_error(__LINE__, msg) +# define syntax_error_at(msg) syntax_error_at(__LINE__, msg) +# define syntax_error_unterm_ch(ch) syntax_error_unterm_ch(__LINE__, ch) +# define syntax_error_unterm_str(s) syntax_error_unterm_str(__LINE__, s) #endif @@ -1957,7 +1966,7 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask) msg = "expression recursion loop detected"; break; } - die_if_script(msg, NULL); + die_if_script(msg); } debug_printf_subst("ARITH RES '"arith_t_fmt"'\n", res); sprintf(arith_buf, arith_t_fmt, res); @@ -2036,20 +2045,18 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask) debug_printf_expand("expand: op:%c (null:%s) test:%i\n", exp_op, exp_null ? "true" : "false", exp_test); if (exp_test) { - if (exp_op == '?') -//TODO: what does interactive bash + if (exp_op == '?') { +//TODO: how interactive bash aborts expansion mid-command? /* ${var?[error_msg_if_unset]} */ /* ${var:?[error_msg_if_unset_or_null]} */ /* mimic bash message */ - if (*exp_word) { - char *msg = xasprintf("%s: %s", var, exp_word); - die_if_script("%s", msg); - free(msg); - } else { - die_if_script("%s: parameter null or not set", var); - } - else + die_if_script("%s: %s", + var, + exp_word[0] ? exp_word : "parameter null or not set" + ); + } else { val = exp_word; + } if (exp_op == '=') { /* ${var=[word]} or ${var:=[word]} */ @@ -4487,7 +4494,7 @@ static int add_till_single_quote(o_string *dest, struct in_str *input) while (1) { int ch = i_getch(input); if (ch == EOF) { - syntax_error_unterminated('\''); + syntax_error_unterm_ch('\''); return 1; } if (ch == '\'') @@ -4501,7 +4508,7 @@ static int add_till_double_quote(o_string *dest, struct in_str *input) while (1) { int ch = i_getch(input); if (ch == EOF) { - syntax_error_unterminated('"'); + syntax_error_unterm_ch('"'); return 1; } if (ch == '"') @@ -4539,7 +4546,7 @@ static int add_till_backquote(o_string *dest, struct in_str *input) while (1) { int ch = i_getch(input); if (ch == EOF) { - syntax_error_unterminated('`'); + syntax_error_unterm_ch('`'); return 1; } if (ch == '`') @@ -4548,7 +4555,7 @@ static int add_till_backquote(o_string *dest, struct in_str *input) /* \x. Copy both chars unless it is \` */ int ch2 = i_getch(input); if (ch2 == EOF) { - syntax_error_unterminated('`'); + syntax_error_unterm_ch('`'); return 1; } if (ch2 != '`' && ch2 != '$' && ch2 != '\\') @@ -4576,7 +4583,7 @@ static int add_till_closing_paren(o_string *dest, struct in_str *input, bool dbl while (1) { int ch = i_getch(input); if (ch == EOF) { - syntax_error_unterminated(')'); + syntax_error_unterm_ch(')'); return 1; } if (ch == '(') @@ -4608,7 +4615,7 @@ static int add_till_closing_paren(o_string *dest, struct in_str *input, bool dbl /* \x. Copy verbatim. Important for \(, \) */ ch = i_getch(input); if (ch == EOF) { - syntax_error_unterminated(')'); + syntax_error_unterm_ch(')'); return 1; } o_addchr(dest, ch); @@ -4726,7 +4733,7 @@ static int handle_dollar(o_string *as_string, break; default: case_default: - syntax_error("unterminated ${name}"); + syntax_error_unterm_str("${name}"); debug_printf_parse("handle_dollar return 1: unterminated ${name}\n"); return 1; } @@ -4831,7 +4838,7 @@ static int parse_stream_dquoted(o_string *as_string, } /* note: can't move it above ch == dquote_end check! */ if (ch == EOF) { - syntax_error_unterminated('"'); + syntax_error_unterm_ch('"'); debug_printf_parse("parse_stream_dquoted return 1: unterminated \"\n"); return 1; } @@ -4954,7 +4961,7 @@ static struct pipe *parse_stream(char **pstring, struct pipe *pi; if (heredoc_cnt) { - syntax_error("unterminated here document"); + syntax_error_unterm_str("here document"); goto parse_error; } if (done_word(&dest, &ctx)) { @@ -5043,7 +5050,7 @@ static struct pipe *parse_stream(char **pstring, * We require heredoc to be in enclosing {}/(), * if any. */ - syntax_error("unterminated here document"); + syntax_error_unterm_str("here document"); goto parse_error; } if (done_word(&dest, &ctx)) { @@ -5123,7 +5130,7 @@ static struct pipe *parse_stream(char **pstring, while (1) { ch = i_getch(input); if (ch == EOF) { - syntax_error_unterminated('\''); + syntax_error_unterm_ch('\''); goto parse_error; } nommu_addchr(&ctx.as_string, ch); |