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https://github.com/sheumann/hush.git
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hush: int->smallint for flag vars; make some names more "greppable"
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parent
8412d7959a
commit
ff0976248a
60
shell/hush.c
60
shell/hush.c
@ -246,7 +246,7 @@ struct redir_struct {
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redir_type type; /* type of redirection */
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int fd; /* file descriptor being redirected */
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int dup; /* -1, or file descriptor being duplicated */
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glob_t word; /* *word.gl_pathv is the filename */
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glob_t glob_word; /* *word.gl_pathv is the filename */
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};
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struct child_prog {
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@ -304,8 +304,8 @@ typedef struct {
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char *data;
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int length;
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int maxlen;
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int quote;
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int nonnull;
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smallint o_quote;
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smallint nonnull;
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} o_string;
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#define NULL_O_STRING {NULL,0,0,0,0}
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/* used for initialization: o_string foo = NULL_O_STRING; */
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@ -1256,13 +1256,13 @@ static int setup_redirects(struct child_prog *prog, int squirrel[])
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struct redir_struct *redir;
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for (redir = prog->redirects; redir; redir = redir->next) {
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if (redir->dup == -1 && redir->word.gl_pathv == NULL) {
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if (redir->dup == -1 && redir->glob_word.gl_pathv == NULL) {
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/* something went wrong in the parse. Pretend it didn't happen */
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continue;
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}
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if (redir->dup == -1) {
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mode = redir_table[redir->type].mode;
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openfd = open_or_warn(redir->word.gl_pathv[0], mode);
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openfd = open_or_warn(redir->glob_word.gl_pathv[0], mode);
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if (openfd < 0) {
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/* this could get lost if stderr has been redirected, but
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bash and ash both lose it as well (though zsh doesn't!) */
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@ -2162,9 +2162,9 @@ static int free_pipe(struct pipe *pi, int indent)
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debug_printf_clean("%s redirect %d%s", indenter(indent), r->fd, redir_table[r->type].descrip);
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if (r->dup == -1) {
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/* guard against the case >$FOO, where foo is unset or blank */
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if (r->word.gl_pathv) {
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debug_printf_clean(" %s\n", *r->word.gl_pathv);
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globfree(&r->word);
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if (r->glob_word.gl_pathv) {
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debug_printf_clean(" %s\n", r->glob_word.gl_pathv[0]);
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globfree(&r->glob_word);
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}
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} else {
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debug_printf_clean("&%d\n", r->dup);
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@ -2216,6 +2216,10 @@ static int run_list(struct pipe *pi)
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return rcode;
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}
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/* Whoever decided to muck with glob internal data is AN IDIOT! */
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/* uclibc happily changed the way it works (and it has rights to do so!),
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all hell broke loose (SEGVs) */
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/* The API for glob is arguably broken. This routine pushes a non-matching
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* string into the output structure, removing non-backslashed backslashes.
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* If someone can prove me wrong, by performing this function within the
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@ -2769,9 +2773,9 @@ static int setup_redirect(struct p_context *ctx, int fd, redir_type style,
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last_redir = redir;
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redir = redir->next;
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}
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redir = xmalloc(sizeof(struct redir_struct));
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redir->next = NULL;
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redir->word.gl_pathv = NULL;
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redir = xzalloc(sizeof(struct redir_struct));
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/* redir->next = NULL; */
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/* redir->glob_word.gl_pathv = NULL; */
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if (last_redir) {
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last_redir->next = redir;
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} else {
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@ -2924,7 +2928,7 @@ static int done_word(o_string *dest, struct p_context *ctx)
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return 0;
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}
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if (ctx->pending_redirect) {
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glob_target = &ctx->pending_redirect->word;
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glob_target = &ctx->pending_redirect->glob_word;
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} else {
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if (child->group) {
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syntax(NULL);
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@ -3160,10 +3164,10 @@ static int process_command_subs(o_string *dest, struct p_context *ctx,
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continue;
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}
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while (eol_cnt) {
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b_addqchr(dest, '\n', dest->quote);
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b_addqchr(dest, '\n', dest->o_quote);
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eol_cnt--;
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}
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b_addqchr(dest, ch, dest->quote);
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b_addqchr(dest, ch, dest->o_quote);
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}
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debug_printf("done reading from pipe, pclose()ing\n");
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@ -3224,7 +3228,7 @@ static const char *lookup_param(const char *src)
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static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *input)
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{
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int ch = b_peek(input); /* first character after the $ */
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unsigned char quote_mask = dest->quote ? 0x80 : 0;
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unsigned char quote_mask = dest->o_quote ? 0x80 : 0;
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debug_printf_parse("handle_dollar entered: ch='%c'\n", ch);
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if (isalpha(ch)) {
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@ -3289,7 +3293,7 @@ static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *i
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return 1;
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break;
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default:
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b_addqchr(dest, '$', dest->quote);
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b_addqchr(dest, '$', dest->o_quote);
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}
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debug_printf_parse("handle_dollar return 0\n");
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return 0;
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@ -3304,9 +3308,9 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
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redir_type redir_style;
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int next;
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/* Only double-quote state is handled in the state variable dest->quote.
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/* Only double-quote state is handled in the state variable dest->o_quote.
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* A single-quote triggers a bypass of the main loop until its mate is
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* found. When recursing, quote state is passed in via dest->quote. */
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* found. When recursing, quote state is passed in via dest->o_quote. */
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debug_printf_parse("parse_stream entered, end_trigger='%s'\n", end_trigger);
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@ -3320,16 +3324,16 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
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next = b_peek(input);
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}
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debug_printf_parse(": ch=%c (%d) m=%d quote=%d\n",
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ch, ch, m, dest->quote);
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ch, ch, m, dest->o_quote);
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if (m == CHAR_ORDINARY
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|| (m != CHAR_SPECIAL && dest->quote)
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|| (m != CHAR_SPECIAL && dest->o_quote)
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) {
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if (ch == EOF) {
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syntax("unterminated \"");
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debug_printf_parse("parse_stream return 1: unterminated \"\n");
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return 1;
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}
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b_addqchr(dest, ch, dest->quote);
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b_addqchr(dest, ch, dest->o_quote);
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continue;
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}
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if (m == CHAR_IFS) {
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@ -3347,7 +3351,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
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}
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}
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if ((end_trigger && strchr(end_trigger, ch))
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&& !dest->quote && ctx->res_w == RES_NONE
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&& !dest->o_quote && ctx->res_w == RES_NONE
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) {
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debug_printf_parse("parse_stream return 0: end_trigger char found\n");
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return 0;
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@ -3356,7 +3360,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
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continue;
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switch (ch) {
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case '#':
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if (dest->length == 0 && !dest->quote) {
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if (dest->length == 0 && !dest->o_quote) {
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while (1) {
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ch = b_peek(input);
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if (ch == EOF || ch == '\n')
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@ -3364,7 +3368,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
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b_getch(input);
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}
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} else {
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b_addqchr(dest, ch, dest->quote);
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b_addqchr(dest, ch, dest->o_quote);
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}
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break;
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case '\\':
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@ -3373,8 +3377,8 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
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debug_printf_parse("parse_stream return 1: \\<eof>\n");
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return 1;
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}
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b_addqchr(dest, '\\', dest->quote);
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b_addqchr(dest, b_getch(input), dest->quote);
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b_addqchr(dest, '\\', dest->o_quote);
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b_addqchr(dest, b_getch(input), dest->o_quote);
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break;
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case '$':
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if (handle_dollar(dest, ctx, input) != 0) {
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@ -3398,7 +3402,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
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break;
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case '"':
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dest->nonnull = 1;
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dest->quote = !dest->quote;
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dest->o_quote ^= 1; /* invert */
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break;
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#if ENABLE_HUSH_TICK
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case '`':
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@ -3561,7 +3565,7 @@ static int parse_and_run_stream(struct in_str *inp, int parse_flag)
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b_reset(&temp);
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}
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temp.nonnull = 0;
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temp.quote = 0;
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temp.o_quote = 0;
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inp->p = NULL;
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free_pipe_list(ctx.list_head, 0);
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}
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