diff options
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/hush.c | 69 | ||||
| -rwxr-xr-x[-rw-r--r--] | shell/hush_test/hush-bugs/quote3.tests | 0 | ||||
| -rw-r--r-- | shell/hush_test/hush-vars/var_expand_in_assign.right | 5 | ||||
| -rwxr-xr-x | shell/hush_test/hush-vars/var_expand_in_assign.tests | 15 | ||||
| -rwxr-xr-x[-rw-r--r--] | shell/hush_test/hush-vars/var_subst_in_for.tests | 0 |
5 files changed, 60 insertions, 29 deletions
diff --git a/shell/hush.c b/shell/hush.c index 803970b..87e003d 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -1308,6 +1308,8 @@ static void pseudo_exec_argv(char **argv) _exit(EXIT_SUCCESS); } + argv = do_variable_expansion(argv); + /* * Check if the command matches any of the builtins. * Depending on context, this might be redundant. But it's @@ -1316,7 +1318,7 @@ static void pseudo_exec_argv(char **argv) */ for (x = bltins; x->cmd; x++) { if (strcmp(argv[0], x->cmd) == 0) { - debug_printf("builtin exec %s\n", argv[0]); + debug_printf_exec("running builtin '%s'\n", argv[0]); rcode = x->function(argv); fflush(stdout); _exit(rcode); @@ -1334,6 +1336,7 @@ static void pseudo_exec_argv(char **argv) * to find ourself... */ #if ENABLE_FEATURE_SH_STANDALONE debug_printf("running applet %s\n", argv[0]); +// FIXME: check NOEXEC bit, and EXEC if not set! run_applet_and_exit(argv[0], argv); // is it ok that run_applet_and_exit() does exit(), not _exit()? // NB: IIRC on NOMMU we are after _vfork_, not fork! @@ -1674,6 +1677,7 @@ static int run_pipe_real(struct pipe *pi) } if (single_fg && child->argv != NULL) { + char **argv_expanded, **free_me; char **argv = child->argv; for (i = 0; is_assignment(argv[i]); i++) @@ -1714,16 +1718,7 @@ static int run_pipe_real(struct pipe *pi) putenv(xstrdup(p)); } } - if (child->sp) { - char *str; - - str = make_string(argv + i); - debug_printf_exec(": parse_string_outer '%s'\n", str); - parse_string_outer(str, FLAG_EXIT_FROM_LOOP | FLAG_REPARSING); - free(str); - debug_printf_exec("run_pipe_real return %d\n", last_return_code); - return last_return_code; - } + free_me = NULL; for (x = bltins; x->cmd; x++) { if (strcmp(argv[i], x->cmd) == 0) { if (x->function == builtin_exec && argv[i+1] == NULL) { @@ -1739,7 +1734,11 @@ static int run_pipe_real(struct pipe *pi) // TODO: fflush(NULL)? setup_redirects(child, squirrel); debug_printf_exec(": builtin '%s' '%s'...\n", x->cmd, argv[i+1]); - rcode = x->function(argv + i); + argv_expanded = argv + i; + if (child->sp) /* btw we can do it unconditionally... */ + free_me = argv_expanded = do_variable_expansion(argv + i); + rcode = x->function(argv_expanded); + free(free_me); restore_redirects(squirrel); debug_printf_exec("run_pipe_real return %d\n", rcode); return rcode; @@ -1750,9 +1749,13 @@ static int run_pipe_real(struct pipe *pi) const struct bb_applet *a = find_applet_by_name(argv[i]); if (a && a->nofork) { setup_redirects(child, squirrel); - debug_printf_exec(": run_nofork_applet '%s' '%s'...\n", argv[i], argv[i+1]); save_nofork_data(&nofork_save); - rcode = run_nofork_applet_prime(&nofork_save, a, argv + i); + argv_expanded = argv + i; + if (child->sp) + free_me = argv_expanded = do_variable_expansion(argv + i); + debug_printf_exec(": run_nofork_applet '%s' '%s'...\n", argv_expanded[0], argv_expanded[1]); + rcode = run_nofork_applet_prime(&nofork_save, a, argv_expanded); + free(free_me); restore_redirects(squirrel); debug_printf_exec("run_pipe_real return %d\n", rcode); return rcode; @@ -2049,7 +2052,7 @@ static int run_list_real(struct pipe *pi) continue; } /* insert next value from for_lcur */ - //vda: does it need escaping? + /* vda: does it need escaping? */ pi->progs->argv[0] = xasprintf("%s=%s", for_varname, *for_lcur++); pi->progs->glob_result.gl_pathv[0] = pi->progs->argv[0]; } @@ -2359,7 +2362,13 @@ static void count_var_expansion_space(int *countp, int *lenp, char *arg) default: *p = '\0'; arg[0] = first_ch & 0x7f; - val = lookup_param(arg); + if (isdigit(arg[0])) { + i = xatoi_u(arg); + val = NULL; + if (i < global_argc) + val = global_argv[i]; + } else + val = lookup_param(arg); arg[0] = first_ch; *p = SPECIAL_VAR_SYMBOL; @@ -2380,7 +2389,7 @@ static void count_var_expansion_space(int *countp, int *lenp, char *arg) /* Store given string, finalizing the word and starting new one whenever * we encounter ifs char(s). This is used for expanding variable values. - * End-of-string does NOT finalize word, because cases like echo -$VAR- */ + * End-of-string does NOT finalize word: think about 'echo -$VAR-' */ static int expand_on_ifs(char **list, int n, char **posp, const char *str) { char *pos = *posp; @@ -2390,15 +2399,14 @@ static int expand_on_ifs(char **list, int n, char **posp, const char *str) memcpy(pos, str, word_len); /* store non-ifs chars */ pos += word_len; str += word_len; - if (!*str) /* EOL - do not finalize word */ - break; - *pos++ = '\0'; - if (n) debug_printf_expand("expand_on_ifs finalized list[%d]=%p '%s' " - "strlen=%d next=%p pos=%p\n", n-1, list[n-1], list[n-1], - strlen(list[n-1]), list[n-1] + strlen(list[n-1]) + 1, pos); - list[n++] = pos; } - if (!*str) break; /* EOL, not ifs char */ + if (!*str) /* EOL - do not finalize word */ + break; + *pos++ = '\0'; + if (n) debug_printf_expand("expand_on_ifs finalized list[%d]=%p '%s' " + "strlen=%d next=%p pos=%p\n", n-1, list[n-1], list[n-1], + strlen(list[n-1]), list[n-1] + strlen(list[n-1]) + 1, pos); + list[n++] = pos; str += strspn(str, ifs); /* skip ifs chars */ } *posp = pos; @@ -2478,7 +2486,13 @@ static int expand_vars_to_list(char **list, int n, char **posp, char *arg) default: *p = '\0'; arg[0] = first_ch & 0x7f; - val = lookup_param(arg); + if (isdigit(arg[0])) { + int i = xatoi_u(arg); + val = NULL; + if (i < global_argc) + val = global_argv[i]; + } else + val = lookup_param(arg); arg[0] = first_ch; *p = SPECIAL_VAR_SYMBOL; if (!(first_ch & 0x80)) { /* unquoted var */ @@ -3541,9 +3555,6 @@ static void update_ifs_map(void) * from builtin_source() */ static int parse_stream_outer(struct in_str *inp, int parse_flag) { -// FIXME: '{ true | exit 3; echo $? }' is parsed as a whole, -// as a result $? is replaced by 0, not 3! - struct p_context ctx; o_string temp = NULL_O_STRING; int rcode; diff --git a/shell/hush_test/hush-bugs/quote3.tests b/shell/hush_test/hush-bugs/quote3.tests index c52e040..c52e040 100644..100755 --- a/shell/hush_test/hush-bugs/quote3.tests +++ b/shell/hush_test/hush-bugs/quote3.tests diff --git a/shell/hush_test/hush-vars/var_expand_in_assign.right b/shell/hush_test/hush-vars/var_expand_in_assign.right new file mode 100644 index 0000000..352210d --- /dev/null +++ b/shell/hush_test/hush-vars/var_expand_in_assign.right @@ -0,0 +1,5 @@ +. . +.abc d e. +.abc d e. +.abc d e. +.abc d e. diff --git a/shell/hush_test/hush-vars/var_expand_in_assign.tests b/shell/hush_test/hush-vars/var_expand_in_assign.tests new file mode 100755 index 0000000..18cdc74 --- /dev/null +++ b/shell/hush_test/hush-vars/var_expand_in_assign.tests @@ -0,0 +1,15 @@ +if test $# = 0; then + exec "$THIS_SH" "$0" abc "d e" +fi + +space=' ' +echo .$space. + +a=$* +echo .$a. +a=$@ +echo .$a. +a="$*" +echo .$a. +a="$@" +echo .$a. diff --git a/shell/hush_test/hush-vars/var_subst_in_for.tests b/shell/hush_test/hush-vars/var_subst_in_for.tests index 4d1c112..4d1c112 100644..100755 --- a/shell/hush_test/hush-vars/var_subst_in_for.tests +++ b/shell/hush_test/hush-vars/var_subst_in_for.tests |