diff options
author | Denis Vlasenko <vda.linux@googlemail.com> | 2008-07-27 03:08:31 +0400 |
---|---|---|
committer | Denis Vlasenko <vda.linux@googlemail.com> | 2008-07-27 03:08:31 +0400 |
commit | 084266ed520805bbc4ec3f9b4d14e644ecd75880 (patch) | |
tree | fe2c8531dc039c81c12a39f39fcfdf6c1b8ec996 /networking/dnsd.c | |
parent | 8895c2073e9341d8e0348365e75ba6aa4b9b8d05 (diff) |
fix several problems with config parser:
a bug where it underflows the string
a bug where it never frees parser_t struct
make read_config() return 0 if parser is NULL,
make config_close() accept and ignore NULL parser -
eliminates many if() blocks
reverse the sense of parser bit flags - negative flags
are harder to grok.
hexdump: revert the change to use config parser, it is BIGGER
and also requires additional quirks in parser
*: explicitly use PARSER_NORMAL instead of 0
function old new delta
login_main 1575 1596 +21
config_close 18 29 +11
bbunpack 383 391 +8
qgravechar 106 109 +3
rtnl_tab_initialize 121 117 -4
expand 1697 1693 -4
man_main 717 712 -5
nameif_main 674 668 -6
hexdump_main 597 591 -6
read_config 217 209 -8
dnsd_main 1478 1470 -8
sysctl_main 203 189 -14
config_open2 44 25 -19
make_device 1177 1141 -36
config_read 597 549 -48
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/11 up/down: 43/-158) Total: -115 bytes
Diffstat (limited to 'networking/dnsd.c')
-rw-r--r-- | networking/dnsd.c | 60 |
1 files changed, 29 insertions, 31 deletions
diff --git a/networking/dnsd.c b/networking/dnsd.c index efb5cfba7..e8dcb404b 100644 --- a/networking/dnsd.c +++ b/networking/dnsd.c @@ -106,43 +106,41 @@ static void undot(uint8_t * rip) */ static void dnsentryinit(void) { + char *token[2]; parser_t *parser; struct dns_entry *m, *prev; prev = dnsentry = NULL; parser = config_open(fileconf); - if (parser) { - char *token[2]; - while (config_read(parser, token, 2, 2, "# \t", 0)) { - unsigned int a,b,c,d; - /* - * Assumes all host names are lower case only - * Hostnames with more than one label are not handled correctly. - * Presently the dot is copied into name without - * converting to a length/string substring for that label. - */ -// if (!token[1] || sscanf(token[1], ".%u.%u.%u.%u"+1, &a, &b, &c, &d) != 4) - if (sscanf(token[1], ".%u.%u.%u.%u"+1, &a, &b, &c, &d) != 4) - continue; - - m = xzalloc(sizeof(*m)); - /*m->next = NULL;*/ - sprintf(m->ip, ".%u.%u.%u.%u"+1, a, b, c, d); - sprintf(m->rip, ".%u.%u.%u.%u", d, c, b, a); - undot((uint8_t*)m->rip); - convname(m->name, (uint8_t*)token[0]); - - if (OPT_verbose) - fprintf(stderr, "\tname:%s, ip:%s\n", &(m->name[1]), m->ip); - - if (prev == NULL) - dnsentry = m; - else - prev->next = m; - prev = m; - } - config_close(parser); + while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) { + unsigned a, b, c, d; + /* + * Assumes all host names are lower case only + * Hostnames with more than one label are not handled correctly. + * Presently the dot is copied into name without + * converting to a length/string substring for that label. + */ +// if (!token[1] || sscanf(token[1], ".%u.%u.%u.%u"+1, &a, &b, &c, &d) != 4) + if (sscanf(token[1], ".%u.%u.%u.%u"+1, &a, &b, &c, &d) != 4) + continue; + + m = xzalloc(sizeof(*m)); + /*m->next = NULL;*/ + sprintf(m->ip, ".%u.%u.%u.%u"+1, a, b, c, d); + sprintf(m->rip, ".%u.%u.%u.%u", d, c, b, a); + undot((uint8_t*)m->rip); + convname(m->name, (uint8_t*)token[0]); + + if (OPT_verbose) + fprintf(stderr, "\tname:%s, ip:%s\n", &(m->name[1]), m->ip); + + if (prev == NULL) + dnsentry = m; + else + prev->next = m; + prev = m; } + config_close(parser); } /* |