diff options
Diffstat (limited to 'resolv/res_init.c')
| -rw-r--r-- | resolv/res_init.c | 67 |
1 files changed, 35 insertions, 32 deletions
diff --git a/resolv/res_init.c b/resolv/res_init.c index 2908c108b2..64934b0e5f 100644 --- a/resolv/res_init.c +++ b/resolv/res_init.c @@ -521,39 +521,42 @@ res_setoptions(res_state statp, const char *options, const char *source) { } printf(";;\tdebug\n"); #endif - } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) { - statp->options |= RES_USE_INET6; - } else if (!strncmp(cp, "ip6-bytestring", - sizeof("ip6-bytestring") - 1)) { - statp->options |= RES_USEBSTRING; - } else if (!strncmp(cp, "no-ip6-dotint", - sizeof("no-ip6-dotint") - 1)) { - statp->options |= RES_NOIP6DOTINT; - } else if (!strncmp(cp, "ip6-dotint", - sizeof("ip6-dotint") - 1)) { - statp->options &= ~RES_NOIP6DOTINT; - } else if (!strncmp(cp, "rotate", sizeof("rotate") - 1)) { - statp->options |= RES_ROTATE; - } else if (!strncmp(cp, "no-check-names", - sizeof("no-check-names") - 1)) { - statp->options |= RES_NOCHECKNAME; - } else if (!strncmp(cp, "edns0", sizeof("edns0") - 1)) { - statp->options |= RES_USE_EDNS0; - } else if (!strncmp(cp, "single-request-reopen", - sizeof("single-request-reopen") - 1)) { - statp->options |= RES_SNGLKUPREOP; - } else if (!strncmp(cp, "single-request", - sizeof("single-request") - 1)) { - statp->options |= RES_SNGLKUP; - } else if (!strncmp(cp, "no_tld_query", - sizeof("no_tld_query") - 1) || - !strncmp(cp, "no-tld-query", - sizeof("no-tld-query") - 1)) { - statp->options |= RES_NOTLDQUERY; - } else if (!strncmp(cp, "use-vc", sizeof("use-vc") - 1)) { - statp->options |= RES_USEVC; } else { - /* XXX - print a warning here? */ + static const struct + { + char str[22]; + uint8_t len; + uint8_t clear; + unsigned long int flag; + } options[] = { +#define STRnLEN(str) str, sizeof (str) - 1 + { STRnLEN ("inet6"), 0, RES_USE_INET6 }, + { STRnLEN ("ip6-bytestring"), 0, RES_USEBSTRING }, + { STRnLEN ("no-ip6-dotint"), 0, RES_NOIP6DOTINT }, + { STRnLEN ("ip6-dotint"), 1, ~RES_NOIP6DOTINT }, + { STRnLEN ("rotate"), 0, RES_ROTATE }, + { STRnLEN ("no-check-names"), 0, RES_NOCHECKNAME }, + { STRnLEN ("edns0"), 0, RES_USE_EDNS0 }, + { STRnLEN ("single-request-reopen"), 0, RES_SNGLKUPREOP }, + { STRnLEN ("single-request"), 0, RES_SNGLKUP }, + { STRnLEN ("no_tld_query"), 0, RES_NOTLDQUERY }, + { STRnLEN ("no-tld-query"), 0, RES_NOTLDQUERY }, + { STRnLEN ("use-vc"), 0, RES_USEVC } + }; +#define noptions (sizeof (options) / sizeof (options[0])) + int i; + for (i = 0; i < noptions; ++i) + if (strncmp (cp, options[i].str, options[i].len) == 0) + { + if (options[i].clear) + statp->options &= options[i].flag; + else + statp->options |= options[i].flag; + break; + } + if (i == noptions) { + /* XXX - print a warning here? */ + } } /* skip to next run of spaces */ while (*cp && *cp != ' ' && *cp != '\t') |