mirror of
https://github.com/sheumann/hush.git
synced 2024-12-27 16:31:24 +00:00
- fix segfault in nameif with mactab file
(by fixing and shrink config parser) function old new delta config_free_data - 37 +37 config_open 43 48 +5 pack_gzip 1658 1660 +2 nameif_main 527 525 -2 SynchronizeFile 629 623 -6 make_device 1184 1176 -8 config_close 31 18 -13 config_read 431 393 -38 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/5 up/down: 44/-67) Total: -23 bytes
This commit is contained in:
Bernhard Reutner-Fischer
parent
0f683f818c
commit
679212836a
@ -995,7 +995,7 @@ typedef struct parser_t {
|
||||
char *line, *data;
|
||||
int lineno;
|
||||
} parser_t;
|
||||
FILE* config_open(parser_t *parser, const char *filename) FAST_FUNC;
|
||||
parser_t* config_open(const char *filename) FAST_FUNC;
|
||||
/* TODO: add define magic to collapse ntokens/mintokens/comment into one int param */
|
||||
int config_read(parser_t *parser, char **tokens, int ntokens, int mintokens, const char *delims, char comment) FAST_FUNC;
|
||||
void config_close(parser_t *parser) FAST_FUNC;
|
||||
|
||||
@ -31,44 +31,42 @@ Typical usage:
|
||||
|
||||
*/
|
||||
|
||||
FILE* FAST_FUNC config_open(parser_t *parser, const char *filename)
|
||||
parser_t* FAST_FUNC config_open(const char *filename)
|
||||
{
|
||||
// empty file configures nothing!
|
||||
parser_t *parser = xzalloc(sizeof(parser_t));
|
||||
/* empty file configures nothing */
|
||||
parser->fp = fopen_or_warn(filename, "r");
|
||||
if (!parser->fp)
|
||||
return parser->fp;
|
||||
|
||||
// init parser
|
||||
parser->line = NULL;
|
||||
parser->lineno = 0;
|
||||
|
||||
return parser->fp;
|
||||
if (parser->fp)
|
||||
return parser;
|
||||
config_close (parser);
|
||||
if (ENABLE_FEATURE_CLEAN_UP)
|
||||
free(parser);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void FAST_FUNC config_close(parser_t *parser)
|
||||
static void config_free_data(parser_t *const parser)
|
||||
{
|
||||
free(parser->line);
|
||||
free(parser->data);
|
||||
parser->line = parser->data = NULL;
|
||||
}
|
||||
void FAST_FUNC config_close(parser_t *parser)
|
||||
{
|
||||
config_free_data(parser);
|
||||
fclose(parser->fp);
|
||||
}
|
||||
|
||||
int FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mintokens, const char*delims,char comment)
|
||||
{
|
||||
char *line, *q;
|
||||
int token_num, len;
|
||||
int noreduce = (ntokens < 0); // do not treat subsequent delimiters as one delimiter
|
||||
|
||||
if (ntokens < 0)
|
||||
int ii;
|
||||
/* do not treat subsequent delimiters as one delimiter */
|
||||
bool noreduce = (ntokens < 0);
|
||||
if (noreduce)
|
||||
ntokens = -ntokens;
|
||||
|
||||
// nullify tokens
|
||||
memset(tokens, 0, sizeof(void *) * ntokens);
|
||||
|
||||
// free used line
|
||||
free(parser->line);
|
||||
parser->line = NULL;
|
||||
free(parser->data);
|
||||
parser->data = NULL;
|
||||
config_free_data(parser);
|
||||
|
||||
while (1) {
|
||||
int n;
|
||||
@ -82,13 +80,13 @@ int FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mint
|
||||
parser->lineno++;
|
||||
// handle continuations. Tito's code stolen :)
|
||||
while (1) {
|
||||
len = strlen(line);
|
||||
if (!len)
|
||||
goto free_and_cont;
|
||||
if (line[len - 1] != '\\')
|
||||
ii = strlen(line);
|
||||
if (!ii)
|
||||
goto next_line;
|
||||
if (line[ii - 1] != '\\')
|
||||
break;
|
||||
// multi-line object
|
||||
line[--len] = '\0';
|
||||
line[--ii] = '\0';
|
||||
//TODO: add xmalloc_fgetline-like iface but with appending to existing str
|
||||
q = xmalloc_fgetline(parser->fp);
|
||||
if (q) {
|
||||
@ -101,34 +99,35 @@ int FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mint
|
||||
if (comment) {
|
||||
q = strchrnul(line, comment);
|
||||
*q = '\0';
|
||||
len = q - line;
|
||||
ii = q - line;
|
||||
}
|
||||
// skip leading delimiters
|
||||
n = strspn(line, delims);
|
||||
if (n) {
|
||||
len -= n;
|
||||
ii -= n;
|
||||
strcpy(line, line + n);
|
||||
}
|
||||
if (len)
|
||||
if (ii)
|
||||
break;
|
||||
// skip empty lines
|
||||
free_and_cont:
|
||||
|
||||
next_line:
|
||||
/* skip empty line */
|
||||
free(line);
|
||||
}
|
||||
|
||||
// non-empty line found, parse and return
|
||||
|
||||
// store line
|
||||
parser->line = line = xrealloc(line, len + 1);
|
||||
parser->line = line = xrealloc(line, ii + 1);
|
||||
parser->data = xstrdup(line);
|
||||
|
||||
// now split line to tokens
|
||||
//TODO: discard consecutive delimiters?
|
||||
token_num = 0;
|
||||
ii = 0;
|
||||
ntokens--; // now it's max allowed token no
|
||||
while (1) {
|
||||
// get next token
|
||||
if (token_num == ntokens)
|
||||
if (ii == ntokens)
|
||||
break;
|
||||
q = line + strcspn(line, delims);
|
||||
if (!*q)
|
||||
@ -136,8 +135,8 @@ int FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mint
|
||||
// pin token
|
||||
*q++ = '\0';
|
||||
if (noreduce || *line) {
|
||||
tokens[token_num++] = line;
|
||||
//bb_error_msg("L[%d] T[%s]", token_num, line);
|
||||
tokens[ii++] = line;
|
||||
//bb_info_msg("L[%d] T[%s]\n", ii, line);
|
||||
}
|
||||
line = q;
|
||||
}
|
||||
@ -145,11 +144,11 @@ int FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mint
|
||||
// non-empty remainder is also a token,
|
||||
// so if ntokens <= 1, we just return the whole line
|
||||
if (noreduce || *line)
|
||||
tokens[token_num++] = line;
|
||||
tokens[ii++] = line;
|
||||
|
||||
if (token_num < mintokens)
|
||||
if (ii < mintokens)
|
||||
bb_error_msg_and_die("bad line %u: %d tokens found, %d needed",
|
||||
parser->lineno, token_num, mintokens);
|
||||
parser->lineno, ii, mintokens);
|
||||
|
||||
return token_num;
|
||||
return ii;
|
||||
}
|
||||
|
||||
@ -443,7 +443,7 @@ static void FixDayDow(CronLine *line)
|
||||
|
||||
static void SynchronizeFile(const char *fileName)
|
||||
{
|
||||
struct parser_t parser;
|
||||
struct parser_t *parser;
|
||||
struct stat sbuf;
|
||||
int maxLines;
|
||||
char *tokens[6];
|
||||
@ -455,12 +455,13 @@ static void SynchronizeFile(const char *fileName)
|
||||
return;
|
||||
|
||||
DeleteFile(fileName);
|
||||
if (!config_open(&parser, fileName))
|
||||
parser = config_open(fileName);
|
||||
if (!parser)
|
||||
return;
|
||||
|
||||
maxLines = (strcmp(fileName, "root") == 0) ? 65535 : MAXLINES;
|
||||
|
||||
if (fstat(fileno(parser.fp), &sbuf) == 0 && sbuf.st_uid == DaemonUid) {
|
||||
if (fstat(fileno(parser->fp), &sbuf) == 0 && sbuf.st_uid == DaemonUid) {
|
||||
CronFile *file = xzalloc(sizeof(CronFile));
|
||||
CronLine **pline;
|
||||
int n;
|
||||
@ -468,11 +469,11 @@ static void SynchronizeFile(const char *fileName)
|
||||
file->cf_User = xstrdup(fileName);
|
||||
pline = &file->cf_LineBase;
|
||||
|
||||
while (--maxLines && (n=config_read(&parser, tokens, 6, 0, " \t", '#')) >= 0) {
|
||||
while (--maxLines && (n=config_read(parser, tokens, 6, 0, " \t", '#')) >= 0) {
|
||||
CronLine *line;
|
||||
|
||||
if (DebugOpt) {
|
||||
crondlog(LVL5 "user:%s entry:%s", fileName, parser.data);
|
||||
crondlog(LVL5 "user:%s entry:%s", fileName, parser->data);
|
||||
}
|
||||
|
||||
/* check if line is setting MAILTO= */
|
||||
@ -519,7 +520,7 @@ static void SynchronizeFile(const char *fileName)
|
||||
crondlog(WARN9 "user %s: too many lines", fileName);
|
||||
}
|
||||
}
|
||||
config_close(&parser);
|
||||
config_close(parser);
|
||||
}
|
||||
|
||||
static void CheckUpdates(void)
|
||||
|
||||
@ -160,12 +160,12 @@ int nameif_main(int argc, char **argv)
|
||||
prepend_new_eth_table(&clist, ifname, *argv++);
|
||||
}
|
||||
} else {
|
||||
struct parser_t parser;
|
||||
if (config_open(&parser, fname)) {
|
||||
struct parser_t *parser = config_open(fname);
|
||||
if (parser) {
|
||||
char *tokens[2];
|
||||
while (config_read(&parser, tokens, 2, 2, " \t", '#') >= 0)
|
||||
while (config_read(parser, tokens, 2, 2, " \t", '#') >= 0)
|
||||
prepend_new_eth_table(&clist, tokens[0], tokens[1]);
|
||||
config_close(&parser);
|
||||
config_close(parser);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -94,14 +94,14 @@ static void make_device(char *path, int delete)
|
||||
type = S_IFBLK;
|
||||
|
||||
if (ENABLE_FEATURE_MDEV_CONF) {
|
||||
parser_t parser;
|
||||
parser_t *parser = config_open("/etc/mdev.conf");
|
||||
char *tokens[5];
|
||||
|
||||
/* If we have config file, look up user settings */
|
||||
if (!config_open(&parser, "/etc/mdev.conf"))
|
||||
if (!parser)
|
||||
goto end_parse;
|
||||
|
||||
while (config_read(&parser, tokens, 4, 3, " \t", '#') >= 0) {
|
||||
while (config_read(parser, tokens, 4, 3, " \t", '#') >= 0) {
|
||||
regmatch_t off[1+9*ENABLE_FEATURE_MDEV_RENAME_REGEXP];
|
||||
char *val;
|
||||
|
||||
@ -213,7 +213,7 @@ static void make_device(char *path, int delete)
|
||||
const char *s2 = strchr(s, *val);
|
||||
|
||||
if (!s2)
|
||||
bb_error_msg_and_die("bad line %u", parser.lineno);
|
||||
bb_error_msg_and_die("bad line %u", parser->lineno);
|
||||
|
||||
/* Correlate the position in the "@$*" with the delete
|
||||
* step so that we get the proper behavior:
|
||||
@ -229,7 +229,7 @@ static void make_device(char *path, int delete)
|
||||
break; /* we found matching line, stop */
|
||||
} /* end of "while line is read from /etc/mdev.conf" */
|
||||
|
||||
config_close(&parser);
|
||||
config_close(parser);
|
||||
}
|
||||
end_parse:
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user